阅读说明：本技术 悬臂掘进机的钻头定位装置 (Drill bit positioning device of cantilever excavator ) 是由 杜耀辉 王夢 高岳 周飞 张明富 冯晓宁 杨帆 许高赫 席康利 曹君 徐洪流 于 2021-08-17 设计创作，主要内容包括：本发明公开了悬臂掘进机的钻头定位装置,包括定位承载台、旋转角度调节机构、旋转角度限位机构、竖直角度调整机构、旋转角度控制设备、缓冲减震机构和万向轮,所述定位承载台一侧设置有旋转角度控制设备,所述定位承载台上表面设置有钻头本体,本发明通过设置的旋转角度调节机构,当钻头本体放置在定位承载台需要调整钻头的旋转角度时,通过旋转角度调节机构内伺服电机运转,能够使旋转角度控制设备内驱动齿轮转动,并通过驱动齿轮表面的斜向卡齿与从动齿轮表面的卡齿啮合,能够使从动齿轮转动,在从动齿轮转动过程中能够使连接带带动旋转圆盘转动,从而能够使旋转圆盘带动固定支架上端的钻头转动,实现对钻头旋转角度位置的调整。(The invention discloses a drill bit positioning device of a cantilever tunneling machine, which comprises a positioning bearing platform, a rotation angle adjusting mechanism, a rotation angle limiting mechanism, a vertical angle adjusting mechanism, a rotation angle control device, a buffering and damping mechanism and a universal wheel, wherein the rotation angle control device is arranged on one side of the positioning bearing platform, and a drill bit body is arranged on the upper surface of the positioning bearing platform. The adjustment of the rotation angle position of the drill bit is realized.)

1. Drill bit positioner of cantilever entry driving machine, including location plummer (1), rotation angle adjustment mechanism (3), rotation angle stop gear (4), vertical angle guiding mechanism (5), rotation angle controlgear (9), buffering damper (10) and universal wheel (8), its characterized in that: the positioning bearing platform is characterized in that a rotation angle control device (9) is arranged on one side of the positioning bearing platform (1), a drill bit body (6) is arranged on the upper surface of the positioning bearing platform (1), a rotation angle adjusting mechanism (3) is arranged inside the rotation angle control device (9), a servo motor (301), a driving gear (302), a driven gear (303), a connecting belt (304), an angle supporting frame (305) and a rotating disc (306) are arranged inside the rotation angle adjusting mechanism (3), the servo motor (301) is arranged on one side inside the rotation angle control device (9), the driving gear (302) is connected to the inner end of the servo motor (301) in a transmission mode, inclined clamping teeth are arranged on the outer surface of the driving gear (302), the driven gear (303) is meshed on one side, and the lower end of the driven gear (303) is rotatably connected to the bottom inside the rotation angle control device (9), driven gear (303) surface has cup jointed connecting band (304), connecting band (304) other end cup joints at rotating disc (306) lower surface, rotating disc (306) upper end is rotated and is connected at location plummer (1) lower surface, rotating disc (306) outside fixedly connected with angle support frame (305), angle support frame (305) outer end fixed connection is at fixed bolster (2) side, fixed bolster (2) are T type structure, just fixed bolster (2) upper end is provided with the recess.

2. The drill bit positioning device of the cantilever excavator according to claim 1, wherein: the novel hydraulic control device is characterized in that a rotation angle limiting mechanism (4) is arranged inside the rotation angle control device (9), a first hydraulic device (401), a first hydraulic rod (402), a limiting plate (403) and a limiting latch (404) are arranged inside the rotation angle limiting mechanism (4), the first hydraulic device (401) is arranged on the side of the rotation angle control device (9), the first hydraulic rod (402) is arranged on the inner side surface of the first hydraulic device (401), and the other end of the first hydraulic rod (402) is arranged on the side of the limiting plate (403).

3. The drill bit positioning device of the cantilever excavator according to claim 2, wherein: the limiting plate (403) is arranged on the side edge of the driven gear (303), and two limiting clamping teeth (404) are arranged on the outer side surface of the limiting plate (403).

4. The drill bit positioning device of the cantilever excavator according to claim 1, wherein: the positioning bearing table is characterized in that a buffering and damping mechanism (10) is arranged in the positioning bearing table (1), and a damping groove (1001), a connecting guide rail (1002), a connecting slide block (1003), a damping support (1004) and a hydraulic damper (1005) are arranged in the buffering and damping mechanism (10).

5. The drill bit positioning device of the cantilever excavator according to claim 4, wherein: shock attenuation groove (1001) set up inside location plummer (1), the equal fixedly connected with in the inside both sides of shock attenuation groove (1001) connects guide rail (1002), connect inside connecting block (1003) sliding connection of guide rail (1002) has shock absorber support (1004), shock absorber support (1004) lower surface both sides all are provided with hydraulic damper (1005), hydraulic damper (1005) lower extreme fixed connection is inside location plummer (1), fixed bolster (2) lower surface both sides all are provided with fixed bolster bumper shock absorber (17).

6. The drill bit positioning device of the cantilever excavator according to claim 1, wherein: the positioning bearing table is characterized in that a vertical angle adjusting mechanism (5) is arranged on the upper surface of the positioning bearing table (1), and a second hydraulic device (501), a second hydraulic rod (502), a second hydraulic device supporting frame (503) and a vertical angle adjusting table (504) are arranged inside the vertical angle adjusting mechanism (5).

7. The drill bit positioning device of the cantilever excavator according to claim 1, wherein: the hydraulic device supporting frame (503) is arranged on two sides of the upper surface of the positioning bearing table (1), a second hydraulic device (501) is arranged at the bottom end of the outer side of the second hydraulic device supporting frame (503), a second hydraulic rod (502) is arranged at the upper end of the second hydraulic device (501), and the other end of the second hydraulic rod (502) is arranged on the side edge of the vertical angle adjusting table (504).

8. The drill bit positioning device of the cantilever excavator according to claim 1, wherein: the equal fixedly connected with plummer supporting leg (7) in location plummer (1) lower surface four corners, plummer supporting leg (7) lower surface is provided with universal wheel (8).

9. The drill bit positioning device of the cantilever excavator according to claim 1, wherein: the inside both sides of location plummer (1) all are provided with spread groove (11), the equal fixedly connected with connecting block (12) in inside one side both ends of spread groove (11), inside sliding connection of connecting block (12) has sliding block one (13), sliding block one (13) outside is rotated and is connected with cross connection pole (14), cross connection pole (14) other end is rotated and is connected at sliding block two (16) side, just be provided with damping spring (18) in the middle of sliding block one (13) and connecting block (12).

10. The drill bit positioning device of the cantilever excavator according to claim 9, wherein: the second sliding block (16) is connected inside the sliding groove (15) in a sliding mode, and the sliding groove (15) is formed in one side inside the hydraulic equipment supporting frame (503).

Technical Field

The invention belongs to the technical field of drill bit positioning, and particularly relates to a drill bit positioning device of a cantilever excavator.

Background

The boom-type development machine is a combined machine set which can realize cutting, loading and transporting, self-walking and spray dust removal. With the rapid development of the comprehensive coal mining mechanization of the stope face, the requirement of coal mines on the tunneling speed of a roadway is higher and higher. In order to increase the speed of the mining roadways, cantilever type excavators have been vigorously developed and gradually developed. The cantilever type development machine simultaneously realizes the functions of coal rock stripping, loading and transportation, walking and movement of the machine, spraying and dust removal and the like, and integrates cutting, loading, transportation and walking. The machine mainly comprises a cutting mechanism, a loading mechanism, a conveying mechanism, a traveling mechanism, a rack, a rotary table, a hydraulic system, an electrical system, a cooling dust-suppression water supply system, an operation control system and the like. Wherein the cutting arm, the rotary table, the slag loading plate, the conveyor, the reversed loader, the crawler and the like are main working mechanisms.

When the tunnel is excavated, a bench method is generally adopted for construction, and an excavating machine is a newly developed single-arm heading machine for medium-speed rail equipment. However, during on-site construction, the effect of controlling the over-short excavation of the tunnel by the single-arm heading machine is not ideal, the precision control of the excavation machine is not good, the problems of construction speed reduction, working hour consumption increase, material consumption increase and the like are caused, and great influence is brought to construction

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a drill bit positioning device of a cantilever excavator to solve the problems that the precision control of an excavating machine is poor and the over-short excavating phenomenon generally exists in the tunnel body excavating process in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the drill bit positioning device of the cantilever heading machine comprises a positioning bearing platform, a rotation angle adjusting mechanism, a rotation angle limiting mechanism, a vertical angle adjusting mechanism, a rotation angle control device, a buffering damping mechanism and a universal wheel, wherein the rotation angle control device is arranged on one side of the positioning bearing platform, a drill bit body is arranged on the upper surface of the positioning bearing platform, the rotation angle adjusting mechanism is arranged inside the rotation angle control device, a servo motor, a driving gear, a driven gear, a connecting belt, an angle supporting frame and a rotating disc are arranged inside the rotation angle adjusting mechanism, the servo motor is arranged on one side inside the rotation angle control device, the inner end of the servo motor is in transmission connection with the driving gear, an inclined clamping tooth is arranged on the outer surface of the driving gear, the driven gear is meshed on one side of the driving gear, the lower end of the driven gear is rotatably connected to the bottom inside the rotation angle control device, the surface of the driven gear is sleeved with a connecting band, the other end of the connecting band is sleeved on the lower surface of the rotary disc, the upper end of the rotary disc is rotatably connected to the lower surface of the positioning bearing table, the outer side of the rotary disc is fixedly connected with an angle supporting frame, the outer end of the angle supporting frame is fixedly connected to the side edge of the fixed support, the fixed support is of a T-shaped structure, and a groove is formed in the upper end of the fixed support.

Preferably, the inside rotation angle stop gear that is provided with of rotation angle controlgear, the inside hydraulic equipment one, hydraulic stem one, limiting plate, the spacing latch of being provided with of rotation angle stop gear, hydraulic equipment one sets up at rotation angle controlgear side, an inboard surface of hydraulic equipment is provided with hydraulic stem one, a hydraulic stem other end sets up at the limiting plate side.

Preferably, the limiting plate is arranged on the side of the driven gear, and two limiting clamping teeth are arranged on the outer side surface of the limiting plate.

Preferably, the inside buffering damper that is provided with of location plummer, inside shock attenuation groove, connecting guide rail, link block, shock absorber support, the hydraulic damper of being provided with of buffering damper.

Preferably, the damping groove sets up inside the location plummer, the equal fixedly connected with in inside both sides of damping groove connects the guide rail, connect the inside connecting block sliding connection that has shock absorber support through connecting, shock absorber support lower surface both sides all are provided with hydraulic damper, hydraulic damper lower extreme fixed connection is inside the location plummer, fixed bolster lower surface both sides all are provided with the fixed bolster bumper shock absorber.

Preferably, the upper surface of the positioning bearing table is provided with a vertical angle adjusting mechanism, and a second hydraulic device, a second hydraulic rod, a hydraulic device supporting frame and a vertical angle adjusting table are arranged in the vertical angle adjusting mechanism.

Preferably, the two sides of the upper surface of the positioning bearing table are both provided with hydraulic equipment supporting frames, the bottom end of the outer side of each hydraulic equipment supporting frame is provided with a second hydraulic equipment, the upper ends of the second hydraulic equipment are provided with a second hydraulic rod, and the other ends of the second hydraulic rods are arranged on the side edge of the vertical angle adjusting table.

Preferably, the four corners of the lower surface of the positioning bearing table are fixedly connected with bearing table supporting legs, and universal wheels are arranged on the lower surfaces of the bearing table supporting legs.

Preferably, the inside both sides of location plummer all are provided with the spread groove, the equal fixedly connected with connecting block in inside one side both ends of spread groove, sliding connection has sliding block one in the inside of connecting block, a sliding block outside is rotated and is connected with the cross connect pole, the cross connect pole other end is rotated and is connected on the sliding block both sides, just be provided with damping spring in the middle of sliding block one and the connecting block.

Preferably, the second sliding block is slidably connected inside a sliding groove, and the sliding groove is formed in one side inside the hydraulic equipment supporting frame.

Compared with the prior art, the invention provides a drill positioning device of a cantilever excavator, which has the following beneficial effects:

1. according to the invention, through the arranged rotation angle adjusting mechanism, when the drill bit body is placed on the positioning bearing table and the rotation angle of the drill bit needs to be adjusted, the servo motor in the rotation angle adjusting mechanism operates, the driving gear in the rotation angle control equipment can be rotated, the driven gear can be rotated through the engagement of the oblique latch on the surface of the driving gear and the latch on the surface of the driven gear, the connecting belt can drive the rotating disc to rotate in the rotating process of the driven gear, so that the rotating disc can drive the drill bit at the upper end of the fixed support to rotate, and the adjustment of the rotation angle position of the drill bit is realized;

2. according to the rotary angle limiting mechanism, in the process of adjusting the rotary angle position of a drill bit, the first hydraulic equipment in the rotary angle limiting mechanism operates, so that the first hydraulic rod at the outer end of the first hydraulic equipment can move, and when the position of the internal structure of the rotary angle adjusting mechanism needs to be fixed, the limiting latch at the outer end of the limiting plate is driven by the first hydraulic rod to prop against the driven gear, so that the position of the drill bit at the rotary angle position can be fixed;

3. according to the invention, through the vertical angle adjusting mechanism, when the vertical angle position of the drill bit needs to be adjusted, the height position of the vertical angle adjusting table can be adjusted by the hydraulic rod II at the upper end of the hydraulic device II through the operation of the hydraulic device II in the vertical angle adjusting mechanism;

4. according to the invention, through the arrangement of the buffering and damping mechanism and the fixed support damper, when a drill bit is placed on the surface of the positioning bearing table, the drill bit firstly extrudes the damping support and the fixed support to the lower end, under the action of the gravity of the drill bit, the damping support and the fixed support can displace for a certain distance in the damping groove in the positioning bearing table, and pressure is caused to the hydraulic damper and the fixed support damper, and under the combined action of the hydraulic damper and the fixed support damper, the acting force of the drill bit can be buffered, so that the damage to the positioning device in the placing process of the drill bit is reduced, and the stability of the positioning device is increased;

5. according to the invention, through the arranged damping spring, when the drill bit self rotates when the rotation angle of the drill bit is adjusted, the hydraulic equipment support frame can be extruded to one end, when the hydraulic equipment support frame is subjected to the rotation acting force of the drill bit, the hydraulic equipment support frame can slide in the connecting groove and enables the cross connecting rod to rotate, the first sliding block connected to the other end of the cross connecting rod can slide in the connecting block and extrude the damping spring to one end, and when the rotation angle of the drill bit is reset, the hydraulic equipment support frame can be pushed back to the initial position through the damping spring;

6. the positioning device can flexibly move through the rotation of the universal wheels through the universal wheels, and the position of the positioning device can be adjusted at any time in the drilling process.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

fig. 1 is a schematic structural diagram of a drill positioning device of a cantilever excavator according to the present invention;

fig. 2 is a cross-sectional view of a positioning bearing table in the drill positioning device of the cantilever excavator according to the present invention;

fig. 3 is a top sectional view of the drill positioning device of the cantilever excavator according to the present invention;

fig. 4 is a sectional view of the front surface of a positioning bearing table in the drill positioning device of the cantilever excavator according to the present invention;

fig. 5 is a top view of a fixing bracket in the drill positioning device of the cantilever excavator according to the present invention;

fig. 6 is an enlarged view of a drill positioning device a in fig. 1 of the cantilever excavator according to the present invention;

fig. 7 is an enlarged view of B in fig. 2 of the drill positioning device of the cantilever excavator according to the present invention;

fig. 8 is an enlarged view of C in fig. 4 of the drill positioning device of the cantilever excavator according to the present invention;

in the figure: 1. positioning a bearing table; 2. fixing a bracket; 3. a rotation angle adjusting mechanism; 301. a servo motor; 302. a drive gear; 303. a driven gear; 304. a connecting belt; 305. an angle support frame; 306. rotating the disc; 4. a rotation angle limiting mechanism; 401. a first hydraulic device; 402. a first hydraulic rod; 403. a limiting plate; 404. limiting latch teeth; 5. a vertical angle adjusting mechanism; 501. a second hydraulic device; 502. a second hydraulic rod; 503. a hydraulic equipment support frame; 504. a vertical angle adjustment stage; 6. a drill bit body; 7. a bearing platform supporting leg; 8. a universal wheel; 9. a rotation angle control device; 10. a buffer damping mechanism; 1001. a damping groove; 1002. connecting the guide rails; 1003. connecting the sliding block; 1004. a shock-absorbing support; 1005. a hydraulic damper; 11. connecting grooves; 12. connecting blocks; 13. a first sliding block; 14. a cross-connecting rod; 15. a sliding groove; 16. a second sliding block; 17. a fixed mount damper; 18. a shock absorbing spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides the following technical solutions: a drill bit positioning device of a cantilever excavator comprises a positioning bearing platform 1, a rotation angle adjusting mechanism 3, a rotation angle limiting mechanism 4, a vertical angle adjusting mechanism 5, a rotation angle control device 9, a buffering damping mechanism 10 and a universal wheel 8, wherein the rotation angle control device 9 is arranged on one side of the positioning bearing platform 1, a drill bit body 6 is arranged on the upper surface of the positioning bearing platform 1, the rotation angle adjusting mechanism 3 is arranged inside the rotation angle control device 9, a servo motor 301, a driving gear 302, a driven gear 303, a connecting belt 304, an angle supporting frame 305 and a rotating disc 306 are arranged inside the rotation angle adjusting mechanism 3, the servo motor 301 is arranged on one side inside the rotation angle control device 9, the driving gear 302 is connected to the inner end of the servo motor 301 in a transmission manner, an inclined latch is arranged on the outer surface of the driving gear 302, the driven gear 303 is meshed on one side of the driving gear 302, the lower end of the driven gear 303 is rotatably connected to the bottom end inside the rotation angle control device 9, the surface of the driven gear 303 is sleeved with a connecting band 304, the other end of the connecting band 304 is sleeved on the lower surface of a rotating disc 306, the upper end of the rotating disc 306 is rotatably connected to the lower surface of the positioning bearing table 1, an angle support frame 305 is fixedly connected to the outer side of the rotating disc 306, the outer end of the angle support frame 305 is fixedly connected to the side edge of a fixed support 2, the fixed support 2 is of a T-shaped structure, and a groove is arranged at the upper end of the fixed support 2, when the rotation angle of the drill bit is required to be adjusted in the drill bit body 6, the driving gear 302 in the rotation angle control device 9 can be rotated through the operation of a servo motor 301 in a rotation angle adjusting mechanism 3, and the oblique latch on the surface of the driving gear 302 is meshed with the latch on the surface of the driven gear 303, so that the driven gear 303 can be rotated, the connecting band 304 can drive the rotating disc 306 to rotate in the rotation process of the driven gear 303, thereby the rotary disk 306 can drive the drill bit at the upper end of the fixed bracket 2 to rotate, and the rotation angle position of the drill bit can be adjusted.

In the invention, preferably, the rotation angle control device 9 is internally provided with a rotation angle limiting mechanism 4, the rotation angle limiting mechanism 4 is internally provided with a first hydraulic device 401, a first hydraulic rod 402, a limiting plate 403 and a limiting latch 404, the first hydraulic device 401 is arranged at the side edge of the rotation angle control device 9, the inner side surface of the first hydraulic device 401 is provided with the first hydraulic rod 402, the other end of the first hydraulic rod 402 is arranged at the side edge of the limiting plate 403, in the process of adjusting the rotation angle position of the drill bit, the first hydraulic device 401 in the rotation angle limiting mechanism 4 operates to move the first hydraulic rod 402 at the outer end of the first hydraulic device 401, when the inner structure position of the rotation angle adjusting mechanism 3 needs to be fixed, the first hydraulic rod 402 drives the limiting latch 404 at the outer end of the limiting plate 403 to abut against the driven gear 303, so that the fixing of the position of a drill bit for adjusting the rotation angle position can be realized.

In the present invention, preferably, the limit plate 403 is disposed at a side of the driven gear 303, and two limit latches 404 are disposed on an outer surface of the limit plate 403.

In the present invention, it is preferable that the positioning stage 1 is provided therein with a cushion mechanism 10, and the cushion mechanism 10 is provided therein with a cushion groove 1001, a connecting rail 1002, a connecting slider 1003, a cushion bracket 1004, and a hydraulic damper 1005.

In the invention, preferably, the damping groove 1001 is arranged inside the positioning bearing table 1, the connecting guide rails 1002 are fixedly connected to both sides inside the damping groove 1001, the damping support 1004 is slidably connected inside the connecting guide rails 1002 through the connecting sliders 1003, the hydraulic dampers 1005 are arranged on both sides of the lower surface of the damping support 1004, the lower ends of the hydraulic dampers 1005 are fixedly connected inside the positioning bearing table 1, and the fixed support dampers 17 are arranged on both sides of the lower surface of the fixed support 2.

In the invention, preferably, a vertical angle adjusting mechanism 5 is arranged on the upper surface of the positioning bearing table 1, and a second hydraulic device 501, a second hydraulic rod 502, a second hydraulic device supporting frame 503 and a vertical angle adjusting table 504 are arranged inside the vertical angle adjusting mechanism 5.

In the invention, preferably, both sides of the upper surface of the positioning bearing platform 1 are provided with hydraulic equipment supporting frames 503, the bottom end of the outer side of each hydraulic equipment supporting frame 503 is provided with a second hydraulic equipment 501, the upper end of the second hydraulic equipment 501 is provided with a second hydraulic rod 502, the other end of the second hydraulic rod 502 is arranged on the side of the vertical angle adjusting platform 504, when the vertical angle position of the drill bit needs to be adjusted, the height position of the vertical angle adjusting platform 504 can be adjusted by the second hydraulic rod 502 at the upper end of the second hydraulic equipment 501 through the operation of the second hydraulic equipment 501 in the vertical angle adjusting mechanism 5, because the inner end of the actual drill bit is connected in the cantilever type heading machine, and the drill bit is only partially arranged on the surface of the positioning bearing platform, the vertical angle of the drill bit can be inclined in the height adjusting process of the vertical angle adjusting platform 504, and the adjustment of the vertical angle position of the drill bit can be realized.

In the invention, preferably, four corners of the lower surface of the positioning bearing table 1 are fixedly connected with bearing table supporting legs 7, the lower surfaces of the bearing table supporting legs 7 are provided with universal wheels 8, the positioning device can be flexibly moved through the rotation of the universal wheels 8, the position of the positioning device can be adjusted at any time in the drilling process, and therefore, the construction can be carried out on the sections at different positions.

In the invention, preferably, two sides inside the positioning bearing table 1 are both provided with connecting grooves 11, two ends of one side inside the connecting grooves 11 are both fixedly connected with connecting blocks 12, a first sliding block 13 is slidably connected inside the connecting blocks 12, the outer side of the first sliding block 13 is rotatably connected with a cross connecting rod 14, the other end of the cross connecting rod 14 is rotatably connected to the side edge of a second sliding block 16, and a damping spring 18 is arranged between the first sliding block 13 and the connecting blocks 12.

In the present invention, preferably, the second sliding block 16 is slidably connected inside the sliding groove 15, and the sliding groove 15 is disposed on one side inside the hydraulic equipment supporting frame 503.

The working principle and the using process of the invention are as follows: when the cantilever type heading machine is used, the cantilever type heading machine is placed on the surface of the positioning bearing platform 1, the groove at the upper end of the fixed support 2 is propped against the corresponding position of a drill bit, when the drill bit body 6 is placed to adjust the rotation angle of the drill bit, the servo motor 301 in the rotation angle adjusting mechanism 3 operates to enable the driving gear 302 in the rotation angle control device 9 to rotate, oblique latch teeth on the surface of the driving gear 302 are meshed with latch teeth on the surface of the driven gear 303 to enable the driven gear 303 to rotate, the connecting belt 304 can drive the rotating disc 306 to rotate in the rotating process of the driven gear 303, so that the rotating disc 306 can drive the drill bit at the upper end of the fixed support 2 to rotate, the rotation angle position of the drill bit is adjusted, in the adjusting process of the rotation angle position of the drill bit, the hydraulic rod I402 at the outer end of the hydraulic device I401 can move through the operation of the hydraulic device I401 in the rotation angle limiting mechanism 4, when the structure position in the rotating angle adjusting mechanism 3 needs to be fixed, the first hydraulic rod 402 drives the limiting latch 404 at the outer end of the limiting plate 403 to abut against the driven gear 303, so that the fixing of the position of a bit at the rotating angle position can be realized, when the vertical angle position of the bit needs to be adjusted, the second hydraulic device 501 in the vertical angle adjusting mechanism 5 operates, the second hydraulic rod 502 at the upper end of the second hydraulic device 501 can adjust the height position of the vertical angle adjusting platform 504, because the inner end of the actual bit is connected in the cantilever type heading machine and the bit is only partially placed on the surface of the positioning bearing platform, the vertical angle of the bit can be inclined in the height adjusting process of the vertical angle adjusting platform 504, so that the adjustment of the vertical angle position of the bit can be realized, when the bit is placed on the surface of the positioning bearing platform 1, the bit firstly extrudes the damping bracket 1004 and the fixing bracket 2 towards the lower end, under the action of the gravity of the drill bit, the damping support 1004 and the fixed support 2 can generate pressure on the hydraulic damper 1005 and the fixed support damper 17, under the combined action of the hydraulic damper 1005 and the fixed support damper 17, the acting force of the drill bit can be buffered, so that the damage to the positioning device caused by the drill bit in the placing process is reduced, the stability of the positioning device is increased, when the drill bit adjusts the rotation angle, the hydraulic equipment support frame 503 can be extruded to one end, when the hydraulic equipment support frame 503 receives the rotating acting force of the drill bit, the hydraulic equipment support frame 503 can slide in the connecting groove 11, and the cross connecting rod 14 rotates, the sliding block I13 connected with the other end of the cross connecting rod 14 can slide in the connecting block 12, and the damping spring 18 is extruded to one end, when the rotation angle of the drill bit is reset, the hydraulic equipment support frame 503 can be pushed back to the initial position through the damping spring 18, the drill bit can make the flexible movement of the positioning device through the rotation of the universal wheel 8 in the construction process of the section, and the position of the positioning device can be adjusted at any time in the drilling process, so that the sections at different positions can be constructed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.