阅读说明：本技术 采矿用无底链可变角度型刮板输送机 (Bottom-chain-free variable-angle scraper conveyor for mining ) 是由 张念生 吴立忠 刘庆华 杨学文 南亚杰 曹伟 张婷婷 于 2021-05-31 设计创作，主要内容包括：本发明提供的采矿用无底链可变角度型刮板输送机,包括：机头、机尾、刮板链、输送槽,机头位于输送槽的一端,机尾位于输送槽的另一端,刮板链位于输送槽的上表面,第一可变角中部槽的形状为直角梯形,第一可变角中部槽的形状与第二可变角输送槽的形状轴对称,第一可变角中部槽的一端与第二可变角输送槽的一端销接,第一可变角中部槽、第二可变角中部槽的外侧壁上连接转弯组件；当矿洞不是笔直的,需要转一定角度时,将第一可变角中部槽及第二可变角中部槽安装在需要转弯的位置上,通过转弯组件将第一可变角中部槽及第二可变角中部槽旋转到能够适应矿洞安装的角度,使得刮板输送机可以根据矿洞的大小及位置旋转一定的角度进行安装。(The invention provides a bottomless chain variable-angle scraper conveyor for mining, which comprises: the scraper chain is positioned on the upper surface of the conveying groove, the shape of the first variable-angle middle groove is in a right trapezoid shape, the shape of the first variable-angle middle groove is axially symmetrical to that of the second variable-angle conveying groove, one end of the first variable-angle middle groove is in pin joint with one end of the second variable-angle conveying groove, and the outer side walls of the first variable-angle middle groove and the second variable-angle middle groove are connected with a turning assembly; when the mine hole is not straight and needs to be turned by a certain angle, the first variable-angle middle groove and the second variable-angle middle groove are installed at the position needing to be turned, and the first variable-angle middle groove and the second variable-angle middle groove are rotated to the angle capable of being suitable for installation of the mine hole through the turning assembly, so that the scraper conveyor can be installed by rotating by a certain angle according to the size and the position of the mine hole.)

1. A bottomless chain variable angle scraper conveyor for mining, comprising: aircraft nose, tail, scrape chain, conveyer trough, the aircraft nose is located the one end of conveyer trough, the tail is located the other end of conveyer trough, it is located to scrape the chain the upper surface of conveyer trough, the conveyer trough includes: the coal transporting device comprises a middle trough assembly, transition troughs and cable troughs, wherein the middle trough assembly is connected to form a coal transporting track, two ends of the middle trough assembly are respectively connected with one end of each transition trough, the other end of one transition trough is connected with the machine head, the other end of the other transition trough is connected with the machine tail, and the middle trough assembly comprises: the scraper conveyor comprises a first variable angle middle groove, a second variable angle middle groove, a middle groove and a turning assembly, wherein the first variable angle middle groove is in a right trapezoid shape, the first variable angle middle groove is in axial symmetry with the second variable angle conveying groove, one end of the first variable angle middle groove is in pin joint with one end of the second variable angle conveying groove, the other end of the first variable angle middle groove is connected with the middle groove, the other end of the second variable angle middle groove is connected with the transition groove, the turning assembly is connected to the outer side walls of the first variable angle middle groove and the second variable angle middle groove, and the scraper conveyor can rotate at the first variable angle middle groove and the second variable angle conveying groove to change angles.

2. The mining drag chain-less variable angle scraper conveyor of claim 1, wherein the first variable angle center trough comprises: the first supporting plate, the first baffle ledge, the first shovel ledge and the elastic baffle, wherein two sides of the first supporting plate are respectively connected with the first shovel ledge and the first baffle ledge, and the second variable-angle middle groove comprises: the length of the first baffle is larger than that of the second baffle, two sides of the second baffle are respectively connected with the first baffle and the second baffle, one end of the first support plate is in pin joint with one end of the second support plate, the other end of the first support plate is connected with the middle grooves on the same side, the other end of the second support plate is connected with the middle grooves on the same side, the ledge of the first baffle is connected with the first baffle through the elastic baffle, and the ledge of the first baffle is connected with the second baffle through the turning assembly.

3. The bottom-chain-free variable-angle scraper conveyor for mining according to claim 2, wherein a first circular inserting plate is arranged at one end of the first supporting plate, which is connected with the second supporting plate, a first pin hole is arranged in the middle of the first circular inserting plate, a second circular inserting plate and a third circular inserting plate are arranged at one end of the second supporting plate, which is connected with the first supporting plate, the second circular inserting plate is provided with a second pin hole, the third circular inserting plate is provided with a third pin hole, the second pin hole is the same as the axis of the third pin hole, the second circular inserting plate and the third circular inserting plate form an inserting hole, the first circular inserting plate is inserted into the second circular inserting plate and the third circular inserting plate form an inserting hole, and the first pin hole, the second pin hole and the third pin hole are connected with each other through the first pin hole, the second pin hole and the third pin hole.

4. The mining drag-less chain variable angle scraper conveyor of claim 3, wherein the turning assembly comprises: the first connecting plate is in threaded connection with the first shovel ledge, the second connecting plate is in threaded connection with the second baffle, long holes are formed in the first connecting plate and the second connecting plate, the first connecting plate can move on the side wall of the first shovel ledge, the second connecting plate can move on the side wall of the second baffle, the first bearing seat, the roller and the second bearing seat are sequentially sleeved on the shaft, two ends of the first bearing seat are in threaded connection with the upper portions of the first connecting plate and the second connecting plate respectively, two ends of the second bearing seat are in threaded connection with the lower portions of the first connecting plate and the second connecting plate respectively, the roller is located between the first bearing seat and the second bearing seat and is in threaded connection with the first supporting plate, The upper surface of the second supporting plate is contacted, and the shaft is positioned at the joint of the first supporting plate and the second supporting plate.

5. The endless chain variable angle scraper conveyor for mining according to claim 4, wherein a first receiving groove is formed in a side of the first pallet connected to the first shovel ledge, a second receiving groove is formed in a side of the second pallet connected to the second apron, the first receiving groove and the second receiving groove are not in the same horizontal plane, a first coal deflector is disposed on a side of the first connecting plate, the first coal deflector can be received in the first receiving groove, a second coal deflector is disposed on a side of the second connecting plate, and the second coal deflector can be received in the second receiving groove.

6. The mining bottom-chain-free variable-angle scraper conveyor according to claim 5, wherein the head is provided with a first sprocket shaft set and a first lifting rod, the tail is provided with a second sprocket shaft set and a second lifting rod, the first sprocket shaft set and the second sprocket shaft set are meshed with the scraper chain to form a complete closed loop to move circularly above the conveying trough, the first lifting rod is located between the first sprocket shaft set and the conveying trough, and the second lifting rod is located between the second sprocket shaft set and the conveying trough.

7. The mining drag-chain-less variable angle scraper conveyor of claim 6, wherein the scraper chain comprises: the scraper component is fixedly connected with the chain, the other end of the scraper component is a free end, the chain is meshed with the first chain wheel shaft group and the second chain wheel shaft group to form a complete closed loop and moves circularly above the conveying groove, the chain is meshed with the first chain wheel shaft group and the second chain wheel shaft group to form a complete closed loop, the axis of the chain is perpendicular to the conveying groove, and the chain drives the scraper component to move on the conveying groove to convey materials on the conveying groove.

8. The mining drag-chain-less variable angle scraper conveyor of claim 7, wherein the scraper assembly comprises: the scraper blade body, walking wheel, the one end of scraper blade body with chain fixed connection, the other end of scraper blade body is the free end, the walking wheel is located the lower part of scraper blade body free end, just the walking wheel with the upper surface contact of conveyer trough, the walking wheel provides the support for the scraper blade body motion in-process.

9. The mining drag-less chain variable angle style flight conveyor of claim 8, wherein the flight body includes: the chain bending machine comprises a straight line part, a one-way rotating button and a bending part, wherein the straight line part is rotatably connected with one end of the bending part through the one-way rotating button, the straight line part is fixedly connected with the chain, and the lower end of the other end of the bending part is connected with a walking wheel.

10. The mining drag-chain-less variable angle scraper conveyor of claim 9, wherein the spacing between adjacent scraper bodies is greater than the circumference of the first sprocket shaft set.

Technical Field

The invention relates to the technical field of scraper conveyors, in particular to a bottomless chain variable-angle scraper conveyor for mining.

Background

As is well known, a coal mine underground fully-mechanized mining working surface is used as a first production site of coal, and in the process of underground fully-mechanized mining, a mine hole is not straight and can have some angles, in the prior art, for example, a patent No. 202020934751.1 of the chinese utility model discloses a novel 90-degree bending scraper conveyor, which comprises a turntable mechanism and a bending groove, wherein the bending groove is fixed on the turntable mechanism to form a 90-degree bending conveying groove, the turntable mechanism is provided with a rotating wheel, the rotating wheel is provided with a groove, a middle double-chain scraper chain is arranged in the bending groove, the middle double-chain scraper chain is provided with a scraper, the scraper can be clamped with the groove of the rotating wheel after contacting the rotating wheel, and the middle double-chain scraper chain is conveyed after the groove is clamped with the scraper; the 90-degree bent scraper conveyor can only adapt to the condition that a mine hole is 90 degrees, and cannot be installed in mine holes with other angles.

Disclosure of Invention

In view of the above, the invention provides a bottomless chain variable-angle scraper conveyor for mining, which aims to solve the technical problem that the scraper conveyor cannot be installed for mine holes with different angles.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a bottomless chain variable angle scraper conveyor for mining, comprising: aircraft nose, tail, scrape chain, conveyer trough, the aircraft nose is located the one end of conveyer trough, the tail is located the other end of conveyer trough, it is located to scrape the chain the upper surface of conveyer trough, the conveyer trough includes: the coal transporting device comprises a middle trough assembly, transition troughs and cable troughs, wherein the middle trough assembly is connected to form a coal transporting track, two ends of the middle trough assembly are respectively connected with one end of each transition trough, the other end of one transition trough is connected with the machine head, the other end of the other transition trough is connected with the machine tail, and the middle trough assembly comprises: the scraper conveyor comprises a first variable angle middle groove, a second variable angle middle groove, a middle groove and a turning assembly, wherein the first variable angle middle groove is in a right trapezoid shape, the first variable angle middle groove is in axial symmetry with the second variable angle conveying groove, one end of the first variable angle middle groove is in pin joint with one end of the second variable angle conveying groove, the other end of the first variable angle middle groove is connected with the middle groove, the other end of the second variable angle middle groove is connected with the transition groove, the turning assembly is connected to the outer side walls of the first variable angle middle groove and the second variable angle middle groove, and the scraper conveyor can rotate at the first variable angle middle groove and the second variable angle conveying groove to change angles.

Preferably, the first variable angle central slot comprises: the first supporting plate, the first baffle ledge, the first shovel ledge and the elastic baffle, wherein two sides of the first supporting plate are respectively connected with the first shovel ledge and the first baffle ledge, and the second variable-angle middle groove comprises: the length of the first baffle is larger than that of the second baffle, two sides of the second baffle are respectively connected with the first baffle and the second baffle, one end of the first support plate is in pin joint with one end of the second support plate, the other end of the first support plate is connected with the middle grooves on the same side, the other end of the second support plate is connected with the middle grooves on the same side, the ledge of the first baffle is connected with the first baffle through the elastic baffle, and the ledge of the first baffle is connected with the second baffle through the turning assembly.

Preferably, first layer board with the one end that the second layer board is connected sets up first circular picture peg, set up first pinhole in the middle of the first circular picture peg, the second layer board with the one end that first layer board is connected sets up second circular picture peg, third circular picture peg, the second circular picture peg sets up the second pinhole, the third circular picture peg sets up the third pinhole, the second pinhole with the axle center of third pinhole is the same, the second circular picture peg with the third circular picture peg forms the jack, first circular picture peg inserts the second circular picture peg with the third circular picture peg forms the jack in, through first pinhole, second pinhole, third pinhole pin joint.

Preferably, the turning assembly comprises: the first connecting plate is in threaded connection with the first shovel ledge, the second connecting plate is in threaded connection with the second baffle, long holes are formed in the first connecting plate and the second adjusting hole, the first connecting plate can move on the side wall of the first shovel ledge, the second connecting plate can move on the side wall of the second baffle, the first bearing seat, the idler wheel and the second bearing seat are sequentially sleeved on the shaft, two ends of the first bearing seat are in threaded connection with the upper portions of the first connecting plate and the second connecting plate respectively, two ends of the second bearing seat are in threaded connection with the lower portions of the first connecting plate and the second connecting plate respectively, the idler wheel is located between the first bearing seat and the second bearing seat and is in threaded connection with the first supporting plate, The upper surface of the second supporting plate is contacted, and the shaft is positioned at the joint of the first supporting plate and the second supporting plate.

Preferably, a first holding tank is arranged on one side, connected with the ledge of the first shovel plate, of the first supporting plate, a second holding tank is arranged on one side, connected with the second baffle plate, of the second supporting plate, the first holding tank and the second holding tank are not located on the same horizontal plane, a first coal baffle is arranged on one side of the first connecting plate, the first coal baffle can be contained in the first holding tank, a second coal baffle is arranged on one side of the second connecting plate, and the second coal baffle can be contained in the second holding tank.

Preferably, the aircraft nose sets up first sprocket shaft group, first lifter, the tail sets up second sprocket shaft group, second lifter, first sprocket shaft group, second sprocket shaft group with scrape the meshing of scraper chain and form complete closed loop and be in circular motion is done to the top of conveyer trough, first lifter is located between first sprocket shaft group and the conveyer trough, the second lifter is located between second sprocket shaft group and the conveyer trough.

Preferably, the scraper chain comprises: the scraper component is fixedly connected with the chain, the other end of the scraper component is a free end, the chain is meshed with the first chain wheel shaft group and the second chain wheel shaft group to form a complete closed loop and moves circularly above the conveying groove, the chain is meshed with the first chain wheel shaft group and the second chain wheel shaft group to form a complete closed loop, the axis of the chain is perpendicular to the conveying groove, and the chain drives the scraper component to move on the conveying groove to convey materials on the conveying groove.

Preferably, the squeegee assembly comprises: the scraper blade body, walking wheel, the one end of scraper blade body with chain fixed connection, the other end of scraper blade body is the free end, the walking wheel is located the lower part of scraper blade body free end, just the walking wheel with the upper surface contact of conveyer trough, the walking wheel provides the support for the scraper blade body motion in-process.

Preferably, the squeegee body comprises: the chain bending machine comprises a straight line part, a one-way rotating button and a bending part, wherein the straight line part is rotatably connected with one end of the bending part through the one-way rotating button, the straight line part is fixedly connected with the chain, and the lower end of the other end of the bending part is connected with a walking wheel.

Preferably, the spacing between adjacent flight bodies is greater than the circumference of the first set of sprocket shafts.

As can be seen from the above technical solution, in the bottomless chain variable-angle scraper conveyor for mining according to the present invention, the nose is located at one end of the conveying trough, the tail is located at the other end of the conveying trough, the scraper chain is located on the upper surface of the conveying trough, and the conveying trough includes: the coal transporting device comprises a middle trough assembly, transition troughs and cable troughs, wherein the middle trough assembly is connected to form a coal transporting track, two ends of the middle trough assembly are respectively connected with one end of each transition trough, the other end of one transition trough is connected with the machine head, the other end of the other transition trough is connected with the machine tail, and the middle trough assembly comprises: the device comprises a first variable angle middle groove, a second variable angle middle groove, a middle groove and a turning assembly, wherein the first variable angle middle groove is in a right trapezoid shape, the first variable angle middle groove is in axial symmetry with the second variable angle conveying groove, one end of the first variable angle middle groove is in pin joint with one end of the second variable angle conveying groove, the other end of the first variable angle middle groove is connected with the middle groove, the other end of the second variable angle middle groove is connected with a transition groove, and the turning assembly is connected to the outer side walls of the first variable angle middle groove and the second variable angle middle groove; when the mine hole is not straight and needs to be rotated by a certain angle, the first variable angle middle groove and the second variable angle middle groove are installed at the position needing to be turned, and the turning assembly rotates the first variable angle middle groove and the second variable angle middle groove to the angle capable of being suitable for the installation of the mine hole, so that the scraper conveyor can be installed by rotating by a certain angle according to the size and the position of the mine hole.

Drawings

FIG. 1 is a front view of a bottomless chain variable angle style flight conveyor for mining;

FIG. 2 is a top view of a bottomless chain variable angle face conveyor for mining;

FIG. 3 is a top view of the scraper chain run;

FIG. 4 is a front view of the tail;

FIG. 5 is a top view of the tail;

FIG. 6 is a top view of the tail (with the return coal cover removed);

FIG. 7 is a first top view of the installation position of the power part at the tail end (with the coal return cover removed);

FIG. 8 is a second top view of the power unit mounting position (with the coal return cover removed) of the tail;

FIG. 9 is a third top view of the installation position of the power unit at the tail (with the coal return cover removed);

FIG. 10 is a front view of the handpiece;

FIG. 11 is a top view of the handpiece;

FIG. 12 is a first top view of the mounting location of the power section of the handpiece;

FIG. 13 is a second top view of the power section of the handpiece;

FIG. 14 is a third top view of the power section of the handpiece;

FIG. 15 is a left side view of a conveying chute for a scraper conveyor of the related art of a comparative example;

FIG. 16 is a front view of the center tank;

FIG. 17 is a top view of the central channel;

FIG. 18 is a left side view of the center tank;

FIG. 19 is a front view of a first variable angle center slot and a second variable angle center slot;

FIG. 20 is a front view of a second variable angle mid-slot;

FIG. 21 is a front view of a first variable angle mid-slot;

FIG. 22 is a first top view of the first variable angle center slot and the second variable angle center slot;

FIG. 23 is a second top view of the first variable angle center slot and the second variable angle center slot;

FIG. 24 is a third top view of the first variable angle center slot and the second variable angle center slot;

in the figure: the scraper conveyor comprises a conveying trough 1 for the scraper conveyor in the prior art, a baffle ledge 2 in the prior art, a shovel ledge 3 in the prior art, a shovel plate 31 in the prior art, a middle plate 4 in the prior art and a bottom plate 5 in the prior art.

The mining drag chain variable angle scraper conveyor 10, the drag chain scraper conveyor 10, the head 100, the first sprocket shaft group 110, the internal gear 111, the external gear 112, the power part 120, the first lift lever 130, the head frame 130, the first out-chain side 131, the first coupling plate 132, the tail 200, the second sprocket shaft group 210, the tail frame body 220, the second out-chain side 221, the telescopic chain tightening assembly 222, the moving frame 2221, the detachable cover plate 22211, the telescopic cylinder 2222, the first telescopic cylinder 22221, the first connecting pin hole 222211, the second connecting pin hole 222212, the second telescopic cylinder 22222, the third connecting pin hole 222221, the fourth connecting pin hole 222222, the sliding groove 223, the coal return cover 224, the second coupling plate 225, the second lift lever 230, the scraper chain 300, the scraper assembly 310, the scraper body 311, the straight line part 3111, the bent part 3112, the one-way rotating button 3113, the traveling wheel 312, the chain 320, the conveying groove 400, the passing groove 410, The first variable angle middle groove 421, the first support plate 4211, the first circular insertion plate 42111, the first pin hole 421111, the first accommodation groove 42112, the first baffle ledge 4212, the first shovel ledge 4213, the elastic baffle 4214, the second variable angle middle groove 422, the second support plate 4221, the second circular insertion plate 42211, the second pin hole 422111, the third circular insertion plate 42212, the third pin hole 422121, the second accommodation groove 42213, the first baffle 4222, the second baffle 4223, the middle groove 423, the shovel ledge 4231, the shovel 42311, the male connector 423111, the female connector 423112, the first C-shaped groove 42312, the support plate 4232, the dumbbell pin socket 42321, the baffle ledge 4233, the second C-shaped groove 42331, the rack seat 42332, the rack 42333, the push lug 42334, the baffle 42335, the turn assembly 424, the first connection plate 4241, the first long rod hole 42412, the second long rod 42412, the first long rod 4242, the third long rod 42422, the third long rod 4242 and the fourth long rod 42422, Second coal deflector 42423, first bearing seat 4246, roller 4243, second bearing seat 4244, shaft 4245 and cable trough 430.

Detailed Description

The technical solutions and effects of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings of the present invention.

Referring to fig. 1 to 3, a bottomless chain variable angle scraper conveyor 10 for mining includes: aircraft nose 100, tail 200, scraper chain 300, conveyer trough 400, aircraft nose 100 is located the one end of conveyer trough 400, tail 200 is located the other end of conveyer trough 400, scraper chain 300 is located the upper surface of conveyer trough 400, conveyer trough 400 includes: a middle trough assembly 420, a transition trough 410, and a cable trough 430, wherein a plurality of the middle trough assemblies 420 are connected to form a coal transportation rail, two ends of the middle trough assembly 420 are respectively connected to one end of the transition trough 410, one end of the transition trough 410 is connected to the machine head 100, the other end of the other transition trough 410 is connected to the machine tail 200, the cable trough 430 is located at one side of the middle trough 423, and the middle trough assembly 420 comprises: the mine tunnel comprises a first variable angle middle groove 421, a second variable angle middle groove 422, a middle groove 423 and a turning assembly 424, wherein the first variable angle middle groove 421 is in a right trapezoid shape, the first variable angle middle groove 421 is in an axisymmetrical shape with the second variable angle middle groove 422, one end of the first variable angle middle groove 421 is in pin joint with one end of the second variable angle middle groove 422, the other end of the first variable angle middle groove 421 is connected with the middle groove 423, the other end of the second variable angle middle groove 422 is connected with the transition groove 410, the turning assembly 424 is connected to the outer side walls of the first variable angle middle groove 421 and the second variable angle middle groove 422, when the mine tunnel is not straight and needs to be turned for a certain angle, the first variable angle middle groove 421 and the second variable angle middle groove 422 are installed at a position where turning is needed, and the first variable angle middle groove 421 and the second variable angle middle groove 422 can be turned to the position where turning is needed through the turning assembly 424 The angle that enough adapts to the ore deposit hole installation for scraper conveyor can be installed according to the size in ore deposit hole and the certain angle of position rotation.

Further, referring to fig. 19 to 24, the first variable angle middle groove 421 includes: a first support plate 4211, a first baffle ledge 4233, a first shovel ledge 4231 and an elastic baffle 4214, wherein two sides of the first support plate 4211 are respectively connected with the first shovel ledge 4231 and the first baffle ledge 4233, and the second variable-angle middle trough 422 comprises: the length of the first baffle 4222 is greater than that of the second baffle 4223, two sides of the second baffle 4221 are respectively connected with the first baffle 4222 and the second baffle 4223, one end of the first baffle 4211 is in pin joint with one end of the second baffle 4221, the other end of the first baffle 4211 is connected with the middle groove 423 on the same side, the other end of the second baffle 4221 is connected with the middle groove 423 on the same side, the first baffle ledge 4233 is elastically connected with the first baffle 4222 through the elastic baffle 4214, and the first baffle ledge 4231 is connected with the second baffle 4223 through the turning assembly 424; when the first variable angle middle trough 421 and the second variable angle middle trough 422 turn, the first apron ledge 4233 is connected to the first apron 4222 through the elastic apron 4214, so as to prevent coal from leaking out from between the first apron ledge 4233 and the first apron 4222 when the first variable angle middle trough 421 and the second variable angle middle trough 422 turn, and the elastic apron 4214 may be: elastic steel plate, belt.

Further, a first circular insert plate 42111 is arranged at one end of the first support plate 4211 connected with the second support plate 4221, a first pin hole 421111 is arranged in the middle of the first circular insert plate 42111, a second circular insert plate 42211 and a third circular insert plate 42212 are arranged at one end of the second support plate 4221 connected with the first support plate 4211, the second circular insert plate 42211 is provided with a second pin hole 422111, the third circular insert plate 42212 is provided with a third pin hole 422121, the second pin hole 422111 is the same as the third pin hole 422121 in axis, the second circular insert plate 42211 and the third circular insert plate 42212 form an insert hole, the first circular insert plate 42111 is inserted into the insert hole formed by the second circular insert plate 42211 and the third circular insert plate 42212, the first pin hole 421111, the second pin hole 422111 and the third pin hole 422121 are pinned, and when the pins are pinned, a pin shaft is inserted from bottom to top to the middle of the second pin hole 422111 of the second circular insert plate 42211, and a cover plate is covered on the second pin hole 422111 and is in threaded connection with the pin shaft, so that the second circular inserting plate 42211 is flush with the second supporting plate 4221, and the transportation of materials is not influenced.

Further, the turning assembly 424 includes: a first link plate 4241, a second link plate 4242, a first bearing seat 4246, a roller 4243, a second bearing seat 4244 and a shaft 4245, wherein the first link plate 4241 is in threaded connection with the first shovel ledge 4231, the second link plate 4242 is in threaded connection with the second baffle 4223, the first link plate 4241 is provided with a first elongated hole 42411 and a second elongated hole 42412, the first elongated hole 42411 and the second elongated hole 42412 are positioned on the same vertical line, the second link plate 4242 is provided with a third elongated hole 42421 and a fourth elongated hole 42422, the third elongated hole 42411 and the fourth elongated hole 42422 are positioned on the same vertical line, so that the first link plate 4241 can move on the side wall of the first shovel ledge 4231 along the length direction of the first elongated hole 42411 and the second elongated hole 42412, and the second link plate 4242 can move on the side wall of the second shovel ledge 4223 along the length direction of the third elongated hole 42421 and the fourth elongated hole 42422, the first variable angle central groove 421 and the second variable angle central groove 422 can be rotated, the first bearing seat 4246, the roller 4243 and the second bearing seat 4244 are sequentially sleeved on the shaft 4245, two ends of the first bearing seat 4246 are respectively in threaded connection with the upper parts of the first connecting plate 4241 and the second connecting plate 4242, two ends of the second bearing seat 4244 are respectively in threaded connection with the lower parts of the first connecting plate 4241 and the second connecting plate 4242, the roller 4243 is positioned between the first bearing seat 4246 and the second bearing seat 4244 and is in contact with the upper surfaces of the first supporting plate 4211 and the second supporting plate 4221, the shaft is positioned at the joint of the first supporting plate 4211 and the second supporting plate 4221, when the first variable angle central groove 421 and the second variable angle central groove 422 are rotated, the scraper chain 300 passes through the first supporting plate 4211 to the second supporting plate 4221, the scraper chain 300 is in contact with the roller 4243, the scraper chain 300 at the turning position is prevented from having large friction on the first shovel ledge 4231 and the second baffle 4223; and when the friction of the lower part of the roller 4243 is serious, the sequence of sequentially sleeving the first bearing seat 4246, the roller 4243 and the second bearing seat 4244 on the shaft 4245 can be reversed, so that the scraper chain 300 continuously rubs the place where the friction of the roller 4243 is not serious.

Further, a first holding groove 42112 is formed in a side of the first support plate 4211 connected to the first shovel ledge 4231, a second holding groove 42213 is formed in a side of the second support plate 4221 connected to the second baffle 4223, the first holding groove 42112 and the second holding groove 42213 are not in the same horizontal plane, a first coal baffle 42413 is arranged on one side of the first connection plate 4241, the first coal baffle 42413 can be accommodated in the first holding groove 42112, the first coal baffle 42413 can move along with the movement of the first connection plate 4241, a second coal baffle 42423 is arranged on one side of the second connection plate 4242, the second coal baffle 42423 can be accommodated in the second holding groove 42213, the second coal baffle 42423 can move along with the movement of the second connection plate 4242, and when the first variable angle middle groove 421 and the second variable angle middle groove 422 rotate, a certain gap is formed inside the corner, the first coal baffle 42413 and the second coal baffle 42423 are arranged, so that when the scraper chain 300 conveys materials, coal blocks are reduced from falling from the inner side of a corner, and the materials are conveyed out as far as possible.

Further, the first and second variable angle central grooves 421 and 422 may be rotated by 90 ° to 180 °.

Further, referring to fig. 2, 10 to 14, the machine head 100 is provided with a first sprocket shaft group 110 and a first lifting rod 130, the machine tail 200 is provided with a second sprocket shaft group 210 and a second lifting rod 230, the first sprocket shaft group 110, the second sprocket shaft group 210 and the scraper chain 300 are engaged to form a complete closed loop to perform circular motion above the conveying trough 400, the first lifting rod 130 is located between the first sprocket shaft group 110 and the conveying trough 400, and the second lifting rod 230 is located between the second sprocket shaft group 210 and the conveying trough 400; the first and second lift pins 130, 230 are not located on the same side of the first and second sprocket sets 110, 210.

Further, the first sprocket shaft group 110 is the same as the second sprocket shaft group 210, and the first sprocket shaft group 110 includes: the inner gear 111 and the outer gear 112, the inner gear 111 and the outer gear 112 are meshed, the outer gear 112 is meshed with the chain 320, and the chain 320 drives the scraper to move on the conveying groove 400; the tooth part of the outer gear 112 to the shaft part of the outer gear 112 is an inclined surface, so that the tooth part of the outer gear 112 is thin, when the chain 320 drives the scraper body 311 to enter the tail 200 or the nose 100, the scraper body 311 can easily enter the upper surface of the outer gear 112, and the chain 320 is engaged.

When the coal blocks fall into the conveying groove 400, the inner gear 111 rotates to drive the outer gear 112 to rotate, the outer gear 112 is meshed with the scraper chain 300, the scraper chain 300 conveys the coal blocks in the conveying groove 400 to the machine head 100 from the machine tail 200 and then conveys the coal blocks out, the scraper chain 300 can horizontally move in the conveying groove 400, the power consumed by chain returning is reduced, the bottomless chain scraper conveyor does not need a chain discharging channel any more, and the height of the bottomless chain scraper conveyor is reduced.

Further, the axes of the external gear 112 and the internal gear 111 are the same, and the axes of the external gear 112 and the internal gear 111 are perpendicular to the conveying groove 400; when the scraper chain 300 circularly moves parallel to the upper plane of the conveying groove 400, the axes of the outer gear 112 and the inner gear 111 are perpendicular to the conveying groove 400, and the chain 320 can be well meshed with the outer gear 112.

Further, referring to fig. 3 to 9, the tail 200 includes: the tail frame body 220 is provided with a second chain outlet side 221, the tail frame body 220 is connected to the conveying trough 400 at the second chain outlet side 221, the second chain outlet side 221 is used for the chain 320 to enter and exit, a power part 120 is further arranged on the outer side of the tail frame body 220, the power part 120 is located on any side of the tail frame body 220, which is not the second chain outlet side 221, the power part 120 is provided with a second coupling plate 225, the power part 120 is connected with the tail frame body 220 through the second coupling plate 225, the power part 120 is connected with the inner gear 111 through a worm gear, and the power part 120 is used for providing power for the second sprocket shaft group 210, so that the second sprocket shaft group 210 rotates to drive the scraper chain 300 to normally operate; and the power part 120 can be installed at one side of the power part 120 that can be accommodated by the frame body 220 according to the position of the mine hole, so that the installation of the machine tail 200 at the mine hole is more convenient and can be suitable for different mine holes.

Further, the power unit 120 can be installed at any position on the same side of the frame body 220 according to the position of the mine hole.

Further, the top of tailstock body 220 still sets up flexible tight chain subassembly 222, flexible tight chain subassembly 222 with tailstock body 220 both sides sliding connection, flexible tight chain subassembly 222 with second sprocket shaft group 210 can dismantle the connection, second sprocket shaft group 210 level sets up in tailstock body 220, makes the whole height of tail 200 reduces, is favorable to tail 200 is in the installation of mine opening.

Further, the sliding grooves 223 are symmetrically formed in two sides of the top of the frame body 220, the sliding grooves 223 and the second chain outlet side 221 are not located on the same side, and the sliding grooves 223 are slidably connected with the telescopic chain tightening assembly 222.

Further, the telescopic chain tensioner assembly 222 comprises: a movable frame 2221, a telescopic cylinder 2222, said telescopic cylinder 2222 comprises a first telescopic cylinder 22221, a second telescopic cylinder 22222, the first telescopic cylinder 22221 and the second telescopic cylinder 22222 are respectively positioned at both sides of the moving frame 2221, the movable frame 2221 is slidably connected with the sliding groove 223, the movable frame 2221 is connected with the second sprocket shaft group 210, a first connecting pin hole 222211 and a second connecting pin hole 222212 are arranged at two ends of the first telescopic cylinder 22221, a third connecting pin hole 222221 and a fourth connecting pin hole 222222 are arranged at two ends of the second telescopic cylinder 22222, the first telescopic cylinder 22221 is pinned to the sliding groove 223 and one side of the moving frame 2221 through the first connecting pin hole 222211 and the second connecting pin hole 222212, the second telescopic cylinder 22222 is pinned to the slide groove 223 and the other side of the moving frame 2221 through the third connecting pin hole 222221 and the fourth connecting pin hole 222222; when the scraper chain 300 is relatively loose, the first telescopic cylinder 22221 and the second telescopic cylinder 22222 are started, the first telescopic cylinder 22221 and the second telescopic cylinder 22222 drive the movable frame 2221 to move towards the side far from the second chain outlet side 221, the movable frame 2221 drives the second sprocket shaft group 210 to move towards the side far from the second chain outlet side 221, so that the scraper chain 300 is tensioned, thereby facilitating the operation of the scraper chain 300, if the scraper chain 300 needs to be maintained, the scraper chain 300 needs to be loosened, the first telescopic cylinder 22221 and the second telescopic cylinder 22222 are started, the first telescopic cylinder 22221 and the second telescopic cylinder 22222 drive the movable frame 2221 to move towards the side near the second chain outlet side 221, the movable frame 2221 drives the second sprocket shaft group 210 to also move towards the side near the second chain outlet side, thereby loosening the scraper chain 300, facilitating maintenance of the scraper chain 300.

Further, the movable frame 2221 is provided with a detachable cover plate 22211, and the detachable cover plate 22211 is located at the other end of the tailstock body 220 and is not located on the same side as the second out-link side 221.

Further, a semicircle is arranged in the middle of the detachable cover plate 22211, the radius of the semicircle is the same as the radius of the shaft portion of the external gear 112, the detachable cover plate 22211 is located below the lower portion of the tooth portion of the external gear 112, and when the second sprocket shaft group 210 needs to be maintained, the detachable cover plate 22211 is pulled out from the side away from the second chain outlet side 221, so that the second sprocket shaft group 210 is exposed, and the second sprocket shaft group 210 is detected and maintained.

Further, a coal return cover 224 is arranged at the top of the machine tail frame body 220, the coal return cover 224 is in threaded connection with the machine tail frame body 220, the coal return cover 224 is not in contact with the top of the second sprocket shaft group 210, and the coal return cover 224 prevents coal blocks from falling into the second sprocket shaft group 210 to affect the operation of the second sprocket shaft group 210.

Further, referring to fig. 10 to 14, the handpiece 100 includes: the scraper chain conveying device comprises a machine head frame body 130, wherein the machine head frame body 130 is provided with a first chain outlet side 131, the machine head frame body 130 is connected with the conveying groove 400 on the first chain outlet side 131, the first chain outlet side 131 is used for feeding and discharging the chain 320, a power part 120120 is further arranged on the outer side of the machine head frame body 130, the power part 120 is located on any side of the machine head frame body 130, which is not the first chain outlet side 131, the power part 120 is provided with a first connecting plate 132, the power part 120 is connected with the machine tail frame body 220 through the first connecting plate 132, the power part 120 is connected with the inner gear 111 through a worm gear, and the power part 120 is used for providing power for the first sprocket shaft group 110, so that the first sprocket shaft group 110 rotates to drive the scraper chain 300 to normally operate; and the power part 120 can be installed at one side of the power part 120 that can be accommodated by the frame body 220 according to the position of the mine hole, so that the installation of the machine tail 200 at the mine hole is more convenient and can be suitable for different mine holes.

Further, the power unit 120 can be installed at any position on the same side of the frame body 220 according to the position of the mine hole.

Further, the scraper chain 300 includes: the scraper assembly 310 and the chain 320, one end of the scraper assembly 310 is fixedly connected with the chain 320, the other end of the scraper assembly 310 is a free end, the chain 320 is meshed with the first sprocket shaft group 110 and the second sprocket shaft group 210 to form a complete closed loop to do circular motion above the conveying trough 400, an axis of the chain 320 meshed with the first sprocket shaft group 110 and the second sprocket shaft group 210 to form a complete closed loop is perpendicular to the conveying trough 400, and the chain 320 drives the scraper assembly 310 to move on the conveying trough 400 to convey materials on the conveying trough 400.

Further, please refer to fig. 2 and 3, the scraper assembly 310 includes: the scraper blade comprises a scraper blade body 311 and travelling wheels 312, wherein one end of the scraper blade body 311 is fixedly connected with the chain 320, the other end of the scraper blade body 311 is a free end, the travelling wheels 312 are positioned at the lower part of the free end of the scraper blade body 311, the travelling wheels 312 are in contact with the upper surface of the conveying groove 400, and the travelling wheels 312 provide power for the scraper blade body 311 in the movement process; when scraper body 311 one end is fixed, when the other end is the free end, scraper body 311 is along with chain 320 moves forward, walking wheel 312 makes the resistance of the free end of scraper body 311 reduces, just scraper body 311 both ends can walk simultaneously, and scraper body 311 keeps walking with chain 320 is perpendicular always promptly, makes the in-process of scraper blade transported substance material, and the material can be carried away as far as possible, works as chain 320 drives scraper body 311 moves when first variable angle middle part groove 421, second variable angle middle part groove 422, scraper body 311's walking wheel 312 and the chain 320 of chain return or the portion 3112 contact of bending after being bent, avoids chain 320 of chain return to influence the normal operating of conveying chain.

Further, the squeegee body 311 includes: a straight portion 3111, a unidirectional rotation button 3113 and a bending portion 3112, wherein the straight portion 3111 is rotatably connected with one end of the bending portion 3112 through the unidirectional rotation button 3113, the straight portion 3111 is fixedly connected with the chain 320, the lower end of the other end of the bending portion 3112 is connected with a traveling wheel 312, and the straight portion 3111, the first lifting rod 130 and the second lifting rod 230 are located on the same straight line; when the scraper body 311 transports materials to the machine head 100, the motor drives the first lifting rod 130 to rise, the bending portion 3112 rotates along the direction of the one-way rotating button 3113 when the bending portion 3112 touches the first lifting rod 130, the bending portion 3112 is bent, then the first lifting rod 130 descends, the scraper body 311 enters the first sprocket shaft group 110, when the bent scraper body 311 is transported to the machine tail 200 from the machine head 100, the motor drives the second lifting rod 230 to rise, when the bent scraper body 311 enters the second sprocket shaft group 210, the second lifting rod 230 blocks the bending portion 3112 to straighten the bending portion to be in a straight line with the straight portion 3111, and the second lifting rod 230 descends to enable the chain 320 to drive the scraper body 311 to continue to operate.

Further, the distance between adjacent scraper bodies 311 is greater than the circumference of the outer gear 112, and when the scraper bodies 311 rotate on the first sprocket shaft group 110 and the second sprocket shaft group 210, there is only one scraper assembly 310, so as to prevent the plurality of scraper assemblies 310 from rotating on the first sprocket shaft group 110 and the second sprocket shaft group 210, which affects the normal operation of the scraper.

Further, the distance between the chain 320 and the complete closed loop formed by the engagement of the first sprocket shaft group 110 and the second sprocket shaft group 210 on the conveying trough 400 is greater than the length of the scraper body 311; when the chain 320 moves circularly parallel to the upper plane of the conveying trough 400, the scrapers for conveying the materials and the bent scrapers do not affect each other.

Further, the length of the scraper body 311 is smaller than the diameter of the external gear 112.

Further, referring to fig. 2, 16 to 18, the middle groove 423 includes: the scraper chain comprises a scraper ledge 4231, a supporting plate 4232 and a baffle ledge 4233, wherein the scraper ledge 4231 is connected with one end of the supporting plate 4232, the other end of the supporting plate 4232 is connected with the baffle ledge 4233, and the upper surface of the supporting plate 4232 provides a running space for the scraper chain 300 to convey materials. The scraper chain 300 moves horizontally on the upper surface of the supporting plate 4232, the chain 320 is not easy to be broken in the operation process of the scraper chain 300, the scraper chain 300 can be checked on the upper surface of the supporting plate 4232, once the chain 320 is broken, the scraper chain can be directly maintained on the upper surface of the supporting plate 4232, and the operation is convenient; and the height of the middle groove 423 is obviously reduced, thereby saving casting materials.

Further, a shovel plate 42311 is further arranged on the shovel plate ledge 4231, the shovel plate 42311 and the supporting plate 4232 are not on the same horizontal plane, and an included angle of 0-10 degrees is formed between the lower plane of the scraping plate and the extension line of the lower plane of the supporting plate 4232, so that the conveying trough 400 is more flexible in the turning process.

Further, the one end of shovel plate 42311 sets up protruding connecting piece 423111, the other end of shovel plate 42311 sets up concave connecting piece 423112, conveyer trough 400 passes through protruding connecting piece 423111 and concave connecting piece 423112 are connected with front and back spread groove, and it is more convenient, inseparable to connect.

Further, a first C-shaped groove 42312 is arranged inside the shovel plate ledge 4231, the shape of the first C-shaped groove 42312 can be adapted to the end of the scraper chain 300, the bottom of the first C-shaped groove 42312 is connected with one end of the supporting plate 4232 far away from the baffle ledge 4233, one end of the scraper chain 300 is pressed by the upper portion of the first C-shaped groove 42312, the scraper chain 300 is prevented from being separated from the upper portion of the supporting plate 4232, the upper portion of the first C-shaped groove 42312 is short, abrasion of the scraper chain 300 to the upper portion of the first C-shaped groove 42312 is reduced, and the service life of the scraper chain is prolonged.

Further, dumbbell pin sockets 42321 are respectively arranged in the width direction of the supporting plate 4232, so that the middle grooves 423 can be conveniently connected.

Furthermore, two rack rail seats 42332 are arranged at the upper part of the baffle ledge 4233, and the rack rail seats 42332 are positioned on the upper end surface of the baffle ledge 4233.

Further, a second C-shaped groove 42331 is arranged inside the baffle ledge 4233, the upper end of the second C-shaped groove 42331 is connected with one end of the baffle 42335, the bottom of the second C-shaped groove 42331 is connected with one end of the supporting plate 4232 far away from the shovel ledge 4231, the other end of the scraper chain 300 is pressed by the upper portion of the second C-shaped groove 42331, the scraper chain 300 is prevented from being separated from the upper portion of the supporting plate 4232, the upper portion of the second C-shaped groove 42331 is short, abrasion of the scraper chain 300 to the upper portion of the second C-shaped groove 42331 is reduced, and the service life of the scraper chain is prolonged.

Further, the second C-shaped groove 42331 is the same shape as the first C-shaped groove 42312.

Further, the length of the baffle 42335 is less than one fourth of the width of the supporting plate 4232, the cross section of the baffle 42335 is trapezoidal, when the scraper chain 300 moves to the position near the baffle ledge 4233 for chain return, the baffle 42335 can prevent a small amount of coal blocks falling off during the operation process of the coal mining machine from entering one side of the baffle ledge 4233 of the supporting plate 4232, so that the straight portion 3111 is prevented from contacting the coal blocks when the chain 320 drives the scraper body 311 to chain return, and the transportation of the material on the supporting plate 4232 is prevented from being influenced. And the included angle between the baffle 42335 and the extension line of the upper end of the second C-shaped groove 42331 is, so that the dropped coal briquette can slide down from the middle part of the supporting plate 4232, and the chat is convenient to drive the scraper blade body 311 to convey the material out.

Furthermore, a rack 42333 is further arranged on the upper end face of the baffle ledge 4233, the rack 42333 is mounted on the rack seat 42332, and a walking track is provided for the walking of the coal mining machine.

Further, a push ear 42334 is further arranged on the side surface of the baffle ledge 4233.

For ease of understanding, this will be further illustrated by the following comparative examples.

Comparative example:

referring to fig. 15, in the prior art, a chinese invention patent, such as patent No. CN201310257684.9, discloses a middle trough and a scraper conveyor 1 having the middle trough, which includes a prior art shovel ledge 3, a prior art baffle ledge 2, a prior art bottom plate 5, a prior art middle plate 4, the prior art shovel ledge 3, the prior art baffle ledge 2, the prior art bottom plate 5, the prior art middle plate 4, and a prior art pushing lug connected together by welding; the middle groove in the prior art also comprises a bottom plate 5, the whole height of the middle groove is high, more materials are lost in casting and cannot be used in a short mine hole, a scraper chain surrounds the whole middle plate in the operation process, the scraper chain is not easy to detect and is easy to break, and the scraper chain is not easy to maintain after being broken; and the shovel board and the bottom plate among the prior art are located same horizontal plane, and the middle part groove collides easily at the in-process of turning, leads to the easy wearing and tearing of shovel board among the prior art.

Referring to fig. 18, the middle trough of the bottom-chain-free scraper conveyor for mining of the present invention includes: the scraper chain scraper comprises a scraper ledge, a supporting plate and a baffle ledge, wherein the scraper ledge is connected with one end of the supporting plate, the other end of the supporting plate is connected with the baffle ledge, the baffle ledge is connected with a baffle, one end of the baffle is connected with the baffle ledge, the other end of the baffle is a free end, the upper surface of the supporting plate is a scraper chain running space, and the baffle can prevent a small amount of coal blocks falling off during the running process of a coal mining machine from entering a chain returning channel to influence the running of the scraper chain. The invention has no bottom plate in the prior art, and the height of the baffle ledge and the shovel board ledge is reduced by one third to one half compared with the prior art, so that the height of the whole conveying trough is reduced, the conveying trough can adapt to shorter mine holes, materials can be saved in the casting process, the weight of the cast conveying trough is obviously reduced, and the supporting plate selects the predetermined thickness according to the conveyed coal quantity and the size of the scraper chain, so that the conveying trough can meet the strength of material transportation; in addition, the scraper chain moves horizontally on the upper surface of the supporting plate, the scraper chain is not easy to break in the operation process of the scraper chain, the scraper chain can be checked on the upper surface of the supporting plate, and once the scraper chain is broken, the scraper chain can be directly maintained on the upper surface of the supporting plate, so that the operation is convenient; according to the invention, the lower surface of the shovel plate and the lower surface of the supporting plate form a certain included angle, so that the conveying groove is more flexible in the turning process, and the abrasion between the shovel plates is reduced.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.