阅读说明：本技术 液压支架 (Hydraulic support ) 是由 孙春东 纪茂峰 卢志敏 李军霄 杨洪增 孙宇 李矿亮 于 2019-11-05 设计创作，主要内容包括：本发明提供了一种液压支架,属于煤矿充填技术领域,包括底座、悬臂梁、第一挡板机构和第二挡板机构,底座上方设置有顶梁,顶梁用于支撑采煤区上方的岩石,悬臂梁与顶梁的一端可拆卸连接,用于支撑充填区上方的岩石,第一挡板机构与顶梁靠近悬臂梁的一端的下端面转动连接,第二挡板机构与底座转动连接,当第一挡板机构的自由端与第二挡板机构的自由端转动至预设位置时第一挡板机构与第二挡板机构配合用于分隔采煤区和充填区。本发明提供的液压支架的悬臂梁可选择性地与顶梁固定或拆卸,提高了工作面的推进进度,采用第一挡板机构分隔采煤区和充填区,提高了承受充填袋挤压的强度。(The invention provides a hydraulic support, which belongs to the technical field of coal mine filling and comprises a base, a cantilever beam, a first baffle mechanism and a second baffle mechanism, wherein a top beam is arranged above the base and used for supporting rocks above a coal mining area, the cantilever beam is detachably connected with one end of the top beam and used for supporting the rocks above a filling area, the first baffle mechanism is rotatably connected with the lower end face of one end, close to the cantilever beam, of the top beam, the second baffle mechanism is rotatably connected with the base, and when the free end of the first baffle mechanism and the free end of the second baffle mechanism rotate to a preset position, the first baffle mechanism and the second baffle mechanism are matched for separating the coal mining area and the filling area. The cantilever beam of the hydraulic support provided by the invention can be selectively fixed or detached with the top beam, the propelling progress of a working face is improved, and the strength for bearing the extrusion of the filling bag is improved by adopting the first baffle mechanism to separate the coal mining area and the filling area.)

1. Hydraulic support, its characterized in that includes:

a top beam for supporting rocks above a coal mining area is arranged above the base;

the cantilever beam is detachably connected with one end of the top beam and is used for supporting rocks above the filling area;

the first baffle mechanism is rotatably connected with one end, close to the cantilever beam, of the top beam; and

the second baffle mechanism is rotationally connected with the base;

when the free end of the first baffle mechanism and the free end of the second baffle mechanism rotate to preset positions, the first baffle mechanism and the second baffle mechanism are matched to separate a coal mining area and a filling area.

2. The hydraulic mount of claim 1, wherein the cantilevered beam is in plug-in engagement with the top beam.

3. The hydraulic support according to claim 2, wherein a plurality of insertion platforms are fixedly arranged on the cantilever beam, the plurality of insertion platforms are sequentially arranged along the width direction of the cantilever beam, a plurality of insertion slots which are inserted into and matched with the insertion platforms are arranged on the top beam, and at least two pin shafts are arranged through the side walls of the insertion slots and the plurality of insertion platforms.

4. The hydraulic support according to claim 1, wherein a plurality of wedge-shaped insertion blocks are fixedly arranged at the bottom end of the first baffle mechanism, the wedge-shaped insertion blocks are sequentially arranged along the length direction of the first baffle mechanism, and a plurality of insertion grooves which are in insertion fit with the wedge-shaped insertion blocks are arranged at the top end of the second baffle mechanism; the top end of the second baffle mechanism is fixedly provided with a plurality of hooks, the hooks are arranged in sequence along the length direction of the second baffle mechanism, and the bottom end of the first baffle mechanism is provided with a plurality of clamping grooves matched with the hooks in a clamping manner.

5. A hydraulic mount according to claim 4 wherein the wedge insert is welded to the first dam mechanism; the clamping hook is welded and fixed with the second baffle mechanism.

6. The hydraulic mount of any one of claims 1-5, wherein the first dam mechanism comprises:

the first stop plate is hinged with the lower end face of the top beam;

the second stop plate is connected with the first stop plate in a sliding mode and slides along the width direction of the first stop plate;

the first telescopic rod is hinged with the first stop plate and used for driving the second stop plate to slide relative to the first stop plate;

and the second telescopic rod is hinged with the top beam and is used for driving the first stop plate to rotate relative to the top beam.

7. The hydraulic mount of any one of claims 1-5, wherein the second damper mechanism comprises:

the third baffle plate is hinged with the base and is used for being matched with the first baffle plate mechanism to separate a coal mining area and a filling area;

and the third telescopic rod is hinged with the base and used for driving the third stop plate to rotate relative to the base.

8. The hydraulic support according to any one of claims 1 to 5, wherein the cantilever beam is of a box structure, an arc-shaped plate protruding outwards is fixedly arranged on each side of the cantilever beam, and the distance from the bottom end of the arc-shaped plate to the top end plate of the cantilever beam is gradually reduced from one end of the cantilever beam close to the top beam to the other end of the cantilever beam.

9. The hydraulic mount of any one of claims 1-5, wherein the cantilever beam top end plate has a longitudinal cross-sectional shape that is rectangular, right trapezoid, or isosceles trapezoid.

10. The hydraulic support according to any one of claims 1 to 5, wherein at least two telescopic columns are arranged between the base and the top beam, the at least two telescopic columns are used for adjusting the distance between the base and the top beam, a first connecting rod and a second connecting rod are hinged to the upper end surface of the base, a third connecting rod is hinged to the lower end surface of the top beam, the first connecting rod, the second connecting rod, the third connecting rod and the base form a four-bar linkage mechanism, a fourth telescopic rod is hinged to the lower end surface of the top beam, and the fourth telescopic rod is used for driving the third connecting rod to rotate relative to the top beam.

Technical Field

The invention belongs to the technical field of coal mine filling equipment, and particularly relates to a hydraulic support.

Background

China has abundant coal resources, mature fully mechanized mining equipment and increasingly perfect coal mining process, and along with the acceleration of the coal mining pace in China, many mines face the problem of resource exhaustion, and the mining of 'three lower' pressed coals below roads, buildings, water bodies and the like becomes the key point of mining attention of people. The third-lower coal pressing is mined, coal seams below rocks need to be mined during coal mining, meanwhile, the spaces (filling areas) of the mined coal seams need to be filled in time, and otherwise, collapse can be caused. The conditions often encountered in real-world mining are: the ordinary section does not need to be filled, and only when a special section is met (coal mining under three layers or a high-pressure line is arranged above a filling area, and the like), the filling is needed. The existing coal mining area and the existing coal mining area only use one plate to separate the coal mining area and the filling area, the strength of a filling bag born by the plate is limited, and the plate is easy to break.

Disclosure of Invention

The invention aims to provide a hydraulic support, and aims to solve the problems of low working efficiency caused by frequent replacement of a filling hydraulic support and a coal mining hydraulic support and easy plate fracture caused by separation of a coal mining area and a filling area by a plate.

In order to achieve the purpose, the invention adopts the technical scheme that: providing a hydraulic mount comprising:

a top beam for supporting rocks above a coal mining area is arranged above the base;

the cantilever beam is detachably connected with one end of the top beam and is used for supporting rocks above the filling area;

the first baffle plate mechanism is rotatably connected with the lower end face of one end, close to the cantilever beam, of the top beam; and

the second baffle mechanism is rotationally connected with the base;

when the free end of the first baffle mechanism and the free end of the second baffle mechanism rotate to preset positions, the first baffle mechanism and the second baffle mechanism are matched to separate a coal mining area and a filling area.

As another embodiment of the application, the cantilever beam is matched with the top beam in an inserting way.

As another embodiment of this application, it inserts the platform, and is a plurality of to have set firmly on the cantilever beam insert the platform and follow the width direction of cantilever beam arranges in proper order, be equipped with on the back timber a plurality ofly with insert a grafting complex slot, and run through a plurality ofly slot lateral wall and a plurality of it is provided with two at least round pin axles to insert the platform.

As another embodiment of the application, a plurality of wedge-shaped insertion blocks are fixedly arranged at the bottom end of the first baffle mechanism, the wedge-shaped insertion blocks are sequentially arranged along the length direction of the first baffle mechanism, and a plurality of insertion slots which are in insertion fit with the wedge-shaped insertion blocks are arranged at the top end of the second baffle mechanism; the top end of the second baffle mechanism is fixedly provided with a plurality of hooks, the hooks are arranged in sequence along the length direction of the second baffle mechanism, and the bottom end of the first baffle mechanism is provided with a plurality of clamping grooves matched with the hooks in a clamping manner.

As another embodiment of the present application, the wedge-shaped insertion block is welded and fixed to the first baffle mechanism; the clamping hook is welded and fixed with the second baffle mechanism.

As another embodiment of the present application, the first shutter mechanism includes:

the first stop plate is hinged with the lower end face of the top beam;

the second stop plate is connected with the first stop plate in a sliding mode and slides along the width direction of the first stop plate;

the first telescopic rod is hinged with the first stop plate and used for driving the second stop plate to slide relative to the first stop plate;

and the second telescopic rod is hinged with the top beam and is used for driving the first stop plate to rotate relative to the top beam.

As another embodiment of the present application, the second shutter mechanism includes:

the third baffle plate is hinged with the base and is used for being matched with the first baffle plate mechanism to separate a coal mining area and a filling area;

and the third telescopic rod is hinged with the base and used for driving the third stop plate to rotate relative to the base.

As another embodiment of this application, the cantilever beam is the box structure, the cantilever beam both sides set firmly outwards convex arc, the distance of bottom to cantilever beam top end board of arc reduces gradually to the other end of cantilever beam from the cantilever beam is close to the one end of back timber.

As another embodiment of the present application, the longitudinal cross-sectional shape of the cantilever beam top end plate is a rectangle, a right trapezoid or an isosceles trapezoid.

As another embodiment of this application, the base with be provided with two at least flexible stands, at least two between the back timber flexible stand is used for adjusting the base with distance between the back timber, the base up end articulates there are first connecting rod and second connecting rod, the terminal surface articulates under the back timber has the third connecting rod, first connecting rod the second connecting rod the third connecting rod with the base constitutes four-bar linkage, the terminal surface articulates under the back timber has the fourth telescopic link, the fourth telescopic link is used for the drive the third connecting rod is relative the back timber rotates.

The hydraulic support provided by the invention has the beneficial effects that: compared with the prior art, the top beam is arranged above the base of the hydraulic support, the top beam is used for supporting rocks above a coal mining area, the cantilever beam is detachably connected with one end of the top beam, the cantilever beam can be guaranteed to be installed for filling when filling is needed in a special section, the cantilever beam is detached when filling is not needed, the filling hydraulic support and the coal mining hydraulic support do not need to be frequently moved and replaced, and the working efficiency and the advancing progress of a working face are improved; the first baffle mechanism is rotatably connected with the lower end face of one end, close to the cantilever beam, of the top beam, the second baffle mechanism is rotatably connected with the base, when the free end of the first baffle mechanism and the free end of the second baffle mechanism rotate to a preset position, the first baffle mechanism and the second baffle mechanism are matched to separate a coal mining area and a filling area, and the first baffle mechanism and the second baffle mechanism are matched to improve the strength of bearing the extrusion of a filling bag. The cantilever beam of the hydraulic support can be selectively fixed or detached with the top beam, the pushing progress of a working face is improved, the coal mining area and the filling area are separated by the first baffle mechanism and the second baffle mechanism, and the strength of bearing the extrusion of the filling bag is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a hydraulic support according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram ii of a hydraulic support according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a connection portion of a back beam and a cantilever beam according to an embodiment of the present invention;

FIG. 4(a) is a schematic front view illustrating a second stopper plate and a third stopper plate of the present invention, the second stopper plate and the third stopper plate being separated from each other; fig. 4(b) is a schematic front view of a clamping portion of the second stopper plate and the third stopper plate according to the embodiment of the present invention;

FIG. 5 is a schematic left-side view of the second stopper plate and the third stopper plate of the present invention;

FIG. 6 is a schematic structural diagram of a connection between a back beam and a cantilever beam and a first baffle mechanism according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a cantilever beam provided in accordance with an embodiment of the present invention;

FIG. 8 is a schematic diagram of a cantilever top end plate according to an embodiment of the present invention;

fig. 9 is a structural view of a cantilever top end plate provided in the second embodiment of the present invention in a right trapezoid shape;

fig. 10 is a structural diagram of a cantilever top end plate provided in the third embodiment of the present invention, which is an isosceles trapezoid;

fig. 11 is a schematic front view of an arc-shaped cantilever plate according to an embodiment of the present invention.

In the figure: 1. a base; 2. a top beam; 21. a front beam; 22. a rear beam; 221. a groove; 23. a side guard plate; 3. a first baffle mechanism; 31. a first stopper plate; 32. a second stopper plate; 321. a wedge-shaped insert block; 322. a card slot; 33. a first telescopic rod; 34. a second telescopic rod; 4. a cantilever beam; 41. inserting a platform; 42. a top end plate; 43. an arc-shaped plate; 5. a pin shaft; 6. a second baffle mechanism; 61. a third stopper plate; 611. a slot; 612. a hook; 62. a third telescopic rod; 7. a telescopic upright post; 8. a first link; 9. a second link; 10. a third link; 11. and a fourth telescopic rod.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 2 together, the hydraulic bracket of the present invention will now be described. Hydraulic support includes base 1, cantilever beam 4, first baffle mechanism 3 and second baffle mechanism 6, base 1 top is provided with back timber 2, back timber 2 is used for supporting the rock of coal mining district top, cantilever beam 4 can be dismantled with the one end of back timber 2 and be connected, be used for supporting the rock of filling district top, first baffle mechanism 3 rotates with the lower terminal surface that back timber 2 is close to the one end of cantilever beam 4 to be connected, second baffle mechanism 6 rotates with base 1 to be connected, first baffle mechanism 3 is used for separating coal mining district and filling district with the cooperation of second baffle mechanism 6 when the free end of first baffle mechanism 3 rotates to preset position with the free end of second baffle mechanism 6.

In the embodiment, a top beam 2 is arranged above a base 1 at a certain distance from the base 1, a coal mining area is arranged between the top beam 2 and the base 1, a scraper conveyor is arranged on the base 1, a cantilever beam 4 is detachably connected with the top beam 2, the cantilever beam 4 and the top beam 2 cannot rotate relatively, and the top surfaces of the cantilever beam 4 and the top beam 2 are on the same horizontal plane; the first baffle mechanism 3 is hinged with the lower end face of the top beam 2, and the second baffle mechanism 6 is hinged with the base 1; the cantilever beam 4 below is for filling the district, and the preset position is that first baffle mechanism 3 sets up with back timber 2 is perpendicular, and second baffle mechanism 6 sets up with base 1 is perpendicular, and first baffle mechanism 3 and second baffle mechanism 6 are located same vertical plane, and first baffle mechanism 3 and 6 butt or the joint of second baffle mechanism.

Compared with the prior art, the top beam 2 is arranged above the base 1, the top beam 2 is used for supporting rocks above a coal mining area, the cantilever beam 4 is detachably connected with one end of the top beam 2, the cantilever beam 4 can be installed for filling when filling is needed in a special area, the cantilever beam 4 is removed when filling is not needed, the filling hydraulic support and the coal mining hydraulic support do not need to be frequently moved and replaced, and the working efficiency and the propelling progress of a working face are improved; first baffle mechanism 3 rotates with the lower terminal surface that back timber 2 is close to the one end of cantilever beam 4 to be connected, and second baffle mechanism 6 rotates with base 1 to be connected, and first baffle mechanism 3 is used for separating coal mining district and filling the district with the cooperation of second baffle mechanism 6 when the free end of first baffle mechanism 3 and the free end of second baffle mechanism 6 rotate to preset position, and first baffle mechanism 3 has improved with the cooperation of second baffle mechanism 6 and has born and fill the extruded intensity of bag. The cantilever beam 4 of the hydraulic support can be selectively fixed or detached with the top beam 2, the pushing progress of a working face is improved, the coal mining area and the filling area are separated by the first baffle mechanism 3 and the second baffle mechanism 6, and the strength of bearing the extrusion of a filling bag is improved.

Referring to fig. 3, a cantilever beam 4 is inserted into and engaged with a top beam 2 as a specific embodiment of the present invention. Cantilever beam 4 can be dismantled with back timber 2 and be connected, when need not fill, can dismantle cantilever beam 4, has improved the propulsion progress of working face.

As a specific implementation manner of the embodiment of the present invention, referring to fig. 3, a plurality of insert stations 41 are fixedly disposed on a cantilever beam 4, the plurality of insert stations 41 are sequentially arranged along a width direction B of the cantilever beam 4, optionally, the insert stations 41 are square and are integrally formed with the cantilever beam 4, and can be processed by using a set of mold, a plurality of grooves 221 are sequentially arranged along the width direction B of a top beam 2, and the insert stations 41 are in inserted connection with the grooves 221; insert and be equipped with the through-hole on the platform 41, the through-hole runs through the relative lateral wall of inserting platform 41, also is equipped with a plurality of through-holes on the back timber 2, and the through-hole runs through the lateral wall of recess 221 and with insert the relative setting of through-hole on the platform 41, and round pin axle 5 passes the through-hole on the back timber 2 and inserts the through-hole on the platform 41 and then fixed back timber 2 and cantilever beam 4, and above-mentioned round pin axle 5 is. A plurality of inserting platforms 41 on the cantilever beam 4 and a plurality of grooves 221 on the top beam 2 are correspondingly inserted and matched, so that the contact area of the cantilever beam 4 and the top beam 2 is increased, and the installation strength of the cantilever beam 4 and the top beam 2 is improved. A plurality of inserting tables 41 can be fixedly arranged on the top beam 2, the inserting tables 41 are sequentially arranged along the width direction B of the top beam 2, a plurality of grooves 221 are sequentially arranged along the width direction B of the cantilever beam 4, the inserting tables 41 are in inserting fit with the grooves 221, and at least two pin shafts 5 penetrate through the side walls of the grooves 221 and the inserting tables 41 to fix the top beam 2 and the cantilever beam 4.

As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 and fig. 2, the second baffle mechanism 6 and the first baffle mechanism 3 may be in abutting engagement or may be in snap engagement, the first baffle mechanism 3 extends toward the base 1, the second baffle mechanism 6 extends toward the top beam 2, the second baffle mechanism 6 rotates relative to the base 1, the first baffle mechanism 3 rotates relative to the top beam 2, and the first baffle mechanism 3 abuts against or is in snap engagement with the second baffle mechanism 6, so as to separate the coal mining area and the filling area.

As a specific implementation manner of the embodiment of the present invention, referring to fig. 4 and 5, the second baffle mechanism 6 is in snap fit with the first baffle mechanism 3, the bottom end of the first baffle mechanism 3 is fixedly provided with a plurality of wedge-shaped insertion blocks 321, the wedge-shaped insertion blocks 321 are sequentially arranged at certain intervals along the length direction C of the first baffle mechanism 3, the top end of the second baffle mechanism 6 is provided with a plurality of slots 611 along the length direction C of the second baffle mechanism 6, the wedge-shaped insertion blocks 321 are in plug fit with the slots 611, so that the degree of freedom of the first baffle mechanism 3 and the second baffle mechanism 6 in the horizontal direction is limited, and the insertion blocks are set to be wedge-shaped, so that the contact area between the first baffle mechanism 3 and the second baffle mechanism 6 can be increased; the top end of the second baffle mechanism 6 is fixedly provided with a plurality of hooks 612, the plurality of hooks 612 are sequentially arranged at a certain distance along the length direction C of the second baffle mechanism 6, the bottom end of the first baffle mechanism 3 is provided with a plurality of clamping grooves 322 along the length direction C of the first baffle mechanism 3, the hooks 612 are in clamping fit with the clamping grooves 322, the degree of freedom of the first baffle mechanism 3 and the second baffle mechanism 6 in the vertical direction is limited, because the strength of the contact part of the first baffle mechanism 3 and the second baffle mechanism 6 is lower, when filling operation is carried out, a filling bag expands to extrude the contact part of the first baffle mechanism 3 and the second baffle mechanism 6, the instability of the contact part is easily caused, the wedge-shaped inserting block 321 and the clamping groove 322 arranged on the first baffle mechanism 3 are respectively matched with the inserting groove 611 and the hooks 612 arranged on the second baffle mechanism 6, the degree of freedom of the first baffle mechanism 3 and the second baffle mechanism 6 in the horizontal direction and the vertical direction is limited, the first baffle mechanism 3 and the second baffle mechanism 6 are clamped more firmly, so that the boundaries of a coal mining area and a filling area are more obvious, the filling effect is better, and the service life of an above-ground high-voltage line is prolonged. The first baffle mechanism 3 may further be provided with a slot 611 and a hook 612, the second baffle mechanism 6 is provided with a wedge-shaped insertion block 321 and a slot 322, the slot 611 is in insertion fit with the wedge-shaped insertion block 321, and the hook 612 is in clamping fit with the slot 322, so that the free ends of the first baffle mechanism 3 and the second baffle mechanism 6 are fixed. The hook 612 has a certain elasticity, when the wedge-shaped plug 321 is inserted into the slot 611, the hook 612 is elastically deformed, and when the wedge-shaped plug 321 continues to move downward relative to the slot 611, the hook 612 is snapped into the slot 322.

Referring to fig. 4 and 5, as an embodiment of the present invention, the wedge-shaped inserting block 321 is welded and fixed to the first baffle mechanism 3, and the hook 612 is welded and fixed to the second baffle mechanism 6. The wedge-shaped inserting block 321 and the first baffle mechanism 3 can also be integrally formed, the hook 612 and the second baffle mechanism 6 can also be integrally formed, and the wedge-shaped inserting block and the first baffle mechanism are processed by two sets of dies. The clamping and fixing strength of the first baffle mechanism 3 and the second baffle mechanism 6 is ensured.

As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 and 6, the first baffle mechanism 3 includes a first stop plate 31, a second stop plate 32, a first telescopic rod 33 and a second telescopic rod 34, optionally, the first telescopic rod 33 and the second telescopic rod 34 are jacks, the first stop plate 31 is hinged to the lower end surface of the top beam 2, the second stop plate 32 is connected to the first stop plate 31 in a sliding manner and slides along the width direction D of the first stop plate 31, a protruding plate is fixedly disposed on the first stop plate 31, a fixed end of the first telescopic rod 33 is hinged to the first stop plate 31 through the protruding plate, a free end of the first telescopic rod 33 is fixedly connected to the second stop plate 32, the first telescopic rod 33 is used for driving the second stop plate 32 to slide relative to the first stop plate 31, a fixed end of the first telescopic rod 33 is fixedly disposed with another protruding plate, a fixed end of the second telescopic rod 34 is hinged to the top beam 2, the free end of the second telescopic rod 34 is hinged to the protruding plate of the first telescopic rod 33, and the second telescopic rod 34 is used for driving the first telescopic rod 33 to rotate relative to the top beam 2, so as to drive the first stop plate 31 to rotate relative to the top beam 2.

Referring to fig. 1, as a specific implementation manner of the embodiment of the present invention, the second baffle mechanism 6 includes a third baffle plate 61 and a third telescopic rod 62, a protruding plate is fixedly connected to the base 1, the third baffle plate 61 is hinged to the base 1 through the protruding plate, a fixed end of the third telescopic rod 62 is hinged to the base 1 through a protruding portion, a free end of the third telescopic rod 62 is hinged to the third baffle plate 61, the third telescopic rod 62 drives the third baffle plate 61 to rotate relative to the base 1, and the third baffle plate 61 can rotate to abut against or be clamped with the second baffle plate 32.

As a specific implementation manner of the embodiment of the present invention, referring to fig. 4 and 5, the second stop plate 32 is in snap fit with the third stop plate 61, the bottom end of the second stop plate 32 is fixedly provided with a plurality of wedge-shaped insertion blocks 321, the wedge-shaped insertion blocks 321 are sequentially arranged at a certain distance along the length direction C of the second stop plate 32, the top end of the third stop plate 61 is provided with a plurality of slots 611 along the length direction C of the third stop plate 61, the wedge-shaped insertion blocks 321 are in plug fit with the slots 611, and the degree of freedom of the second stop plate 32 and the third stop plate 61 in the horizontal direction is limited; the top end of the third stop plate 61 is fixedly provided with a plurality of hooks 612, the plurality of hooks 612 are sequentially arranged at a certain distance along the length direction C of the third stop plate 61, the bottom end of the second stop plate 32 is provided with a plurality of clamping grooves 322 along the length direction C of the second stop plate 32, the hooks 612 are in clamping fit with the clamping grooves 322, the degree of freedom of the second stop plate 32 and the third stop plate 61 in the vertical direction is limited, the wedge-shaped insertion block 321 and the clamping grooves 322 arranged on the second stop plate 32 are respectively matched with the insertion groove 611 and the hooks 612 arranged on the third stop plate 61, the degrees of freedom of the second stop plate 32 and the third stop plate 61 in the horizontal direction and the vertical direction are limited, and the clamping of the second stop plate 32 and the third stop plate 61 is firmer.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 7 and 11, the cantilever beam 4 is a box structure, and two sides of the cantilever beam 4 are fixedly provided with arc-shaped plates 43 protruding outward. Cantilever beam 4 is the box structure, and the top board 42 of cantilever beam 4 is the board on cantilever beam 4 top, and the arc 43 of cantilever beam 4 is the board on cantilever beam 4 both sides, and the box structure can alleviate cantilever beam 4's weight, conveniently moves the frame. The fixed both ends that are provided with outside convex arc 43 in 4 both sides of cantilever beam are the both ends of 4 cross sections of cantilever beam and are outside convex arc, be provided with the strengthening rib in the arc 43, the bottom of arc 43 reduces gradually to the other end of cantilever beam 4 from the one end that cantilever beam 4 is close to back-beam 22 to the distance of tip plate 42, the main view shape of arc 43 is right trapezoid, the bottom of arc 43 is less than 10cm to the average value of the distance of tip plate 42, the rubble of 4 tops of cantilever beam drops at filling effect in-process, can reduce the impact that causes cantilever beam 4 and avoid the support to sting the frame, reduce the frictional force between the support, be convenient for transfer the frame.

In order to select the shape of the top end plate 42 of the cantilever beam 4 according to different working surfaces, please refer to fig. 8 to 10, the shape of the longitudinal section of the top end plate 42 of the cantilever beam 4 is designed as a rectangle, a right trapezoid or an isosceles trapezoid, when the rock conditions above the filling area are good, the frequency of slag falling is low, optionally, the shape of the longitudinal section of the top end plate 42 of the cantilever beam 4 is designed as an isosceles trapezoid, the length of the top end plate 42 is designed as 2.8m or 3.5m, the existing top end plate 42 is designed as 2.1m, coal cutting is performed once by 3 cutters, and the design of the top end plate 42 is lengthened, coal cutting is performed once by 4 cutters or 5 cutters, and the filling efficiency is improved.

As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 and 2, at least two telescopic columns 7 are disposed between a base 1 and a top beam 2, optionally, the telescopic columns 7 are hydraulic cylinders, fixed ends of the telescopic columns 7 are fixedly connected with the base 1, free ends of the telescopic columns 7 are fixedly connected with the base, optionally, the number of the telescopic columns 7 is three, the top beam 2 can be supported more stably, the three telescopic columns 7 are used for adjusting a distance between the base 1 and the top beam 2, and the telescopic columns 7 are linked to drive the top beam 2 to ascend and descend simultaneously, a protruding plate is fixedly disposed on the base 1, the protruding plate has a high height and a low height, a first connecting rod 8 is hinged to the protruding plate, a second connecting rod 9 is hinged to the low position of the protruding plate, the top beam 2 includes a front beam 21 and a rear beam 22, side guards 23 are fixed to two sides of the front beam 21 and the rear beam 22, the front beam 21 is hinged, the hinged point of the front beam 21 and the rear beam 22 is further hinged with one end of a third connecting rod 10, the other end of the third connecting rod 10 is hinged with a first connecting rod 8 and a second connecting rod 9, the first connecting rod 8, the second connecting rod 9, the third connecting rod 10 and the base 1 form a four-bar linkage, a side guard plate 23 of the front beam 21 is hinged with a fourth telescopic rod 11, optionally, the fourth telescopic rod 11 is a jack, the free end of the fourth telescopic rod 11 is hinged with the side guard plate 23 of the front beam 21, the fixed end of the fourth telescopic rod 11 is hinged with the third connecting rod 10, and the fourth telescopic rod 11 is used for driving the third connecting rod 10 to rotate relative to the top beam 2.

The specific working mode of the embodiment of the application is as follows: when filling operation is carried out on a section needing local filling, the coal mining area and the filling area are separated by utilizing the matching between the second stop plate 32 and the third stop plate 61, a worker backs the filling bag to the lower part of the cantilever beam 4 and hangs the filling bag on the cantilever beam 4, the filling bag is blown to the interior of the filling bag to be swelled, and then the filling is carried out through the insertion pipe; when the coal mining operation is performed on the section which does not need to be filled, the rear beam 22 is rotated downwards by a certain angle, the pin shaft 5 for connecting the rear beam 22 and the cantilever beam 4 is taken down, and then the cantilever beam 4 is detached; meanwhile, in order to ensure the strength of the matched part of the second stop plate 32 and the third stop plate 61, the second stop plate 32 and the third stop plate 61 are in clamping fit, the wedge-shaped insertion block 321 and the clamping groove 322 which are arranged on the second stop plate 32 are respectively matched with the slot 611 and the clamping hook 612 which are arranged on the third stop plate 61, the freedom degrees of the second stop plate 32 and the third stop plate 61 in the horizontal direction and the vertical direction are limited, the second stop plate 32 and the third stop plate 61 are more firmly clamped, and the influence of a filling package on the clamping part is avoided.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.