Small mirror field torque tube punching equipment

Abstract

The invention belongs to the technical field of metal machining, and particularly relates to small mirror field torque tube drilling equipment which comprises an equipment body and a drill bit, the upper end of the equipment body is slidably connected with a clamping piece used for limiting and clamping a tube body, and two rolling pieces used for bearing and supporting the tube body are arranged on the equipment body; limiting pieces which are vertically staggered with the clamping pieces and used for clamping the pipe body are arranged on the two sides of the equipment body, rubber pushing blocks which are attached to the pipe body and used for pushing the pipe body to rotate are arranged on the limiting pieces, and the limiting pieces are pushed by third air cylinders to move upwards through rolling pieces. And meanwhile, the pipe body is pushed upwards, a second inductor induces upward movement of a rolling piece and the pipe body, a signal is output to a third controller, the third controller drives a fourth air cylinder at the rear end of a limiting piece to be started and drives the limiting piece to drive a rubber pushing block to be attached to the pipe body, and the pushing block is driven to move through a control assembly. And the pushing block pushes the pipe body to rotate, so that the pipe body is convenient to mount and dismount.

Description

Technical Field

[0001] This invention discloses a drilling device, and more particularly relates to a small mirror field torque tube drilling device. Background Technology

[0002] Drilling equipment, also known as hole drilling equipment, is divided into small and large types. It is a general term for equipment used to process holes in solid materials. It mainly uses a reciprocating motor to drive the transmission mechanism to generate rotary impact motion. According to the working type, small drilling equipment includes electric drills, impact drills, and hammer drills, which are suitable for wood, brittle materials, and concrete, respectively. Large drilling equipment includes drilling machines, which mainly achieve hole processing through spindle rotation and axial movement. They include vertical, benchtop, and radial arm types.

[0003] In many existing technologies, drilling equipment is required. For example, drilling equipment is needed for the side fixing parts of small mirror field torque tubes during the production process. Since small mirror field torque tubes are generally large in size and have many fixing parts, there are also many drilling positions. In the existing technology, when drilling is required, multiple drilling devices are usually set up to process each part that needs to be drilled at the same time. However, due to the large size, loading and unloading are inconvenient. Therefore, this application proposes a new solution to facilitate unloading and hoisting after processing. Summary of the Invention

[0004] The purpose of this invention is to provide a small mirror field torque tube drilling device to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a small mirror field torque tube drilling device, comprising a device body and a drill bit, wherein a drive motor is provided at the rear end of the drill bit, a pusher for limiting the tube body is slidably connected to the device body, a cylinder for driving is provided at the rear end of the pusher, a baffle plate that abuts against the tube body is provided at a location on the device body away from the cylinder, a clamping member for limiting and holding the tube body is slidably connected to the upper end of the device body, two rolling members for receiving and supporting the tube body are provided on the device body, the tube body is embedded between the two rolling members, a cylinder for pushing the clamping member to move is provided on the device body, a cylinder for pushing the rolling members to move is provided at the lower end of the two rolling members, a cylinder for pushing the rolling members to move upward is provided, and limiting members for clamping the tube body are provided on both sides of the device body, which are vertically offset from the clamping member, and the limiting members are provided with rubber push blocks that fit against the tube body and are used to push the tube body to rotate; A sensor is provided at cylinder 1. A controller is provided at cylinder 1 and drill bit for receiving signals from sensor 1. A controller is provided at cylinder 2, which is the same as controller 1. Cylinder 2 is driven later than cylinder 1. The drill bit is driven later than cylinder 2 by controller 1. A sensor is provided at the limiting member for sensing the upward movement of the tube body. Cylinder 4 is provided on the main body of the equipment for controlling the movement of the limiting member. A controller is provided at cylinder 4 for receiving signals from sensor 2. A control component is provided at the limiting member for controlling the movement of the push block.

[0006] Preferably, the control component includes a connecting belt connected to the push block, a support roller for supporting the connecting belt and accommodating the winding of the connecting belt is provided in the limiting member, a take-up roller is rotatably connected in the limiting member, a pull rope for pulling the connecting belt is wound on the take-up roller, a spring for pushing the take-up roller to rotate and take up the winding is provided between the take-up roller and the limiting member, the pull rope is divided into pull rope one and pull rope two, and pull rope one and pull rope two are wound in opposite directions and are staggered, and the limiting member is provided with an adjustment component for adjusting the take-up roller.

[0007] Preferably, the adjusting assembly includes a connecting roller connected to the take-up roller, a gear slidably connected to the connecting roller, a rack located outside the limiting member of the main body of the equipment that meshes with the gear and drives the gear to rotate, and a fixing member located outside the limiting member of the main body of the equipment for supporting the rack, a blocking member on the fixing member for pushing the gear to slide and mesh with the rack, a protrusion on the gear that abuts against the blocking member, and the abutment surface between the protrusion and the blocking member is an arc surface.

[0008] Preferably, a spring is provided between the gear and the take-up roller to push the gear to reset and move. The fixing member is provided with a slot for accommodating the gear at the opposite end of the rack. The slot is provided with a plug for embedding the gear. The gear is provided with a limiting groove for accommodating the plug.

[0009] Preferably, the first limiting groove is a through gear, and the protrusion and the gear are provided with a second limiting groove for accommodating the embedded blocking member, and the second limiting groove passes through the gear and the connecting roller.

[0010] Preferably, the protrusion is divided into left and right halves, the openings on both sides of the upper limit groove are different sizes, and when the protrusion is located in the slot, the side with the larger opening of the upper limit groove is opposite to the blocking member.

[0011] Preferably, the limiting member is symmetrically arranged along the center of the tube body, and the number of limiting members increases according to the length of the tube body.

[0012] Compared with the prior art, the beneficial effects of the present invention are: Firstly, after using this device, the pipe is lifted and moved to this equipment, its position is adjusted and placed in place. Sensor 1 senses the material output signal and controls cylinder 1 to open, causing the pusher to push the pipe to the baffle plate, with the end of the pipe away from the pusher fitting against the baffle plate. At the same time, cylinder 2 is also controlled by controller 2, causing the top clamping part to move down and restrict the pipe to prevent movement. Then, the pipe is fixed and the drill bit is driven to drill holes at the required locations on the side of the pipe, thus completing the drilling. After drilling, cylinders 1 and 2 will automatically reset. During the reset, cylinder 3 is switched on and off, causing the rolling part to be pushed upward by cylinder 3, simultaneously pushing the pipe upward. As the rolling part and pipe move upward, sensor 2 senses the upward movement of the rolling part and outputs a signal to controller 3. Controller 3 drives cylinder 4 at the rear end of the limiting part to open, and drives the limiting part to move the rubber pusher block to fit against the pipe. The control component moves the pusher block, causing it to push and rotate the pipe, thus facilitating installation and disassembly. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of a small mirror field torque tube drilling device. Figure 1 ; Figure 2 A schematic diagram of the structure of a small mirror field torque tube drilling device. Figure 2 ; Figure 3 A schematic diagram of a limiting component for a small mirror field torque tube drilling device; Figure 4 A schematic diagram of the internal structure of a limiting component in a small mirror field torque tube drilling device. Figure 1 ; Figure 5 A schematic diagram of the internal structure of a limiting component in a small mirror field torque tube drilling device. Figure 2 ; Figure 6 A partial structural schematic diagram of a limiting component for a small mirror field torque tube drilling device; Figure 7 for Figure 6 A magnified view of a portion at point A; Figure 8 This is a partial structural diagram of a fixing component for a small mirror field torque tube drilling device.

[0014] Reference numerals in the attached drawings: 1. Main body of the equipment; 2. Drill bit; 3. Drive motor; 4. Pushing component; 5. Cylinder 1; 6. Blocking plate; 7. Clamping component; 8. Rolling component; 9. Cylinder 2; 10. Cylinder 3; 11. Limiting component; 12. Pushing block; 13. Sensor 1; 14. Controller 1; 15. Controller 2; 16. Sensor 2; 17. Cylinder 4; 18. Controller 3; 19. Connecting belt; 20. Support roller; 21. Winding roller; 22. Pull rope; 23. Spring; 24. Pull rope 1; 25. Pull rope 2; 26. Connecting roller; 27. Gear; 28. Rack; 29. ​​Fixing component; 30. Blocking component; 31. Protrusion; 32. Spring; 33. Slot; 34. Insert; 35. Limiting slot 1; 36. Limiting slot 2. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this description, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] A small-field torque tube drilling device, such as Figures 1-8As shown, the device includes a main body 1 and a drill bit 2. A drive motor 3 is located at the rear end of the drill bit 2. A pusher 4 for limiting the pipe is slidably connected to the main body 1. A cylinder 5 for driving is located at the rear end of the pusher 4. A baffle 6 that abuts against the pipe is located on the main body 1 away from the cylinder 5. Normally, when using this device, the pipe to be processed is pushed to a suitable position by the cylinder control, then limited by the clamping member 7. The drill bit 2 then moves to drill. After drilling, the pipe is removed again by a crane or other equipment. However, because the pipe is too long and close to the device, it is difficult to lift. A clamping member 7 for limiting and holding the pipe is slidably connected to the upper end of the main body 1. Two rolling members 8 are provided on the main body 1 for receiving and supporting the pipe, with the pipe embedded between the two rolling members 8. A cylinder 9 connected to the clamping member 7 and pushing the clamping member 7 to move is also provided on the main body 1. A cylinder 10 is provided at the lower end of the rolling element 8 to push the rolling element 8 upward. Limiting elements 11 are provided on both sides of the main body 1, which are offset vertically from the clamping element 7 and used to clamp the tube. A rubber pushing block 12 is provided on the limiting element 11 to fit the tube and to push the tube to rotate. A sensor 13 is provided at the cylinder 5. A controller 14 is provided at the cylinder 5 and the drill bit 2 to receive the signal of the sensor 13. A controller 25 is provided on the cylinder 9, which is the same as the controller 14. The driving time of the cylinder 29 is later than that of the cylinder 5. The time when the drill bit 2 is driven by the controller 14 is later than that of the cylinder 29. A sensor 26 is provided on the limiting element 11 to sense the upward movement of the tube. A cylinder 4 17 is provided on the main body 1 to control the movement of the limiting element 11. A controller 3 18 is provided on the cylinder 4 17 to receive the signal of the sensor 2 16. A control component is provided on the limiting element 11 to control the movement of the pushing block 12. The limiting element 11 is symmetrically arranged along the center of the pipe body. The number of limiting elements 11 can be increased according to the length of the pipe body, thereby increasing the pushing force of the pushing block 12 on the limiting element 11 on the pipe body.After using this device, the pipe is lifted by a crane and placed at the two rolling parts 8 of the main body 1. After the pipe is attached to the rolling parts 8, the crane rope is manually removed, and the device is turned on, causing the drill bit 2 to rotate. The sensor 13 of cylinder 5 is activated, and a signal is sent to controller 14, causing cylinder 5 to move and push the pusher 4 to attach to one side of the pipe. This pushes the pipe to move, and the other end abuts against the baffle plate 6, thus fixing the entire pipe in place and preventing it from moving back and forth. Then, controller 15 drives the clamping part 7 to move down, so that the interaction force between the clamping part 7 and the rolling parts 8 prevents the pipe from moving upwards. The drill bit will not rotate. Finally, the controller 14 on the drill bit 2 drives the cylinder at the rear end of the drill bit 2 to move the drill bit 2 and make the drill bit 2 drill holes on both sides of the pipe body to complete the drilling. After the drilling is completed, the drill bit 2, the clamping part 7 and the pushing part 4 automatically reset. Then, the cylinder 3 10 pushes the rolling part 8 upward. At the same time, the sensor 2 16 on the limit part 11 senses the upward movement of the rolling part 8 and the pipe body, and then outputs a signal to the controller 3 18. At the same time, the controller controls the cylinder 4 17 to start, so that the cylinder 4 17 drives the limit part 11 to move and fit against the pipe body. At the same time, it rotates and pushes the pipe body to rotate, so that the pipe body rotates to the appropriate position for hoisting.

[0017] The control assembly includes a connecting belt 19 connected to the push block 12, a support roller 20 that supports the connecting belt 19 and accommodates the winding of the connecting belt 19 in the limiting member 11, a take-up roller 21 that is rotatably connected in the limiting member 11, a pull rope 22 for pulling the connecting belt 19 is wound on the take-up roller 21, a spring 23 that pushes the take-up roller 21 to rotate and take up the winding is provided between the take-up roller 21 and the limiting member 11, the pull rope 22 is divided into pull rope one 24 and pull rope two 25, and the pull rope one 24 and pull rope two 25 are wound in opposite directions and are staggered. The limiting member 11 is provided with an adjustment assembly for adjusting the take-up roller 21. When cylinder 417 drives the limiting component 11 to move, the support roller 20 on the limiting component 11 and the pushing block 12 move synchronously, and the winding roller 21 also moves synchronously. After the pushing block 12 abuts against the outside of the tube, the winding roller 21 will rotate after being released from the limiting and will be in close contact with the tube body through the rubber pushing block 12. The rubber material increases the friction and, through the squeezing on both sides, will drive the tube body to rotate on the rolling component 8, and rotate the side of the tube body at the perforated area to a vertical position. After being raised, it is convenient for installation and lifting. When the limiting member 11 moves under normal conditions, the winding roller 21 will be in a state of restricted rotation. When the pushing block 12 is in contact with the tube body, the winding roller 21 will be released from the restriction. At this time, the spring 23 will push the winding roller 21 to rotate along the limiting member 11 and pull the pull rope 24 on the winding roller 21 to wind it up, while the pull rope 25 will unfold. At the same time, the pull rope 24 will drive the connecting belt 19 to move along the support roller 20 and drive the pushing block 12 to move upward, thereby pushing the tube body to rotate, making it easier to change the direction of the tube body for hoisting.

[0018] The adjusting assembly includes a connecting roller 26 connected to the take-up roller 21. A gear 27 is slidably connected to the connecting roller 26. The main body 1, located outside the limiting member 11, has a rack 28 that meshes with and drives the gear 27 to rotate. The main body 1, located outside the limiting member 11, also has a fixing member 29 for supporting the rack 28. The fixing member 29 has a blocking member 30 for pushing the gear 27 to slide and mesh with the rack 28. The gear 27 has a protrusion 31 that abuts against the blocking member 30. The abutment surface between the protrusion 31 and the blocking member 30 is an arc surface. A spring 32 is provided between the gear 27 and the take-up roller 21 for pushing the gear 27 to reset and move. The fixing member 29, located opposite the end of the rack 28, has a slot 33 for accommodating the gear 27. The slot 33 contains a plug 34 for embedding the gear 27. The gear 27 has a limiting groove 35 for accommodating the plug 34. After the rotation ends, the cylinder 17 resets, causing the entire limiting member 11 to reset and move backward. Simultaneously, the protrusion 31 on the connecting roller 26 outside the take-up roller 21 directly abuts against the blocking member 30 on the fixing member 29, and moves along the arc surface of the blocking member 30, causing the gear 27 to move backward and compress the spring 32. This causes the gear 27 to move to the opposite position of the rack 28. The backward-moving limiting member 11 then drives the take-up roller 21, which, pushed by the rack 28, causes the gear 27 to rotate, rewinding the pull rope 25 and releasing the pull rope 24. This causes the connecting belt 19 to reset the push block 12 and rewind the mainspring 2. 3. Compression and storage achieves automatic reset and facilitates continued automatic rotation during unloading. Secondly, when the take-up roller 21 and gear 27 move to the end of the rack 28 but have not yet disengaged from the rack 28, the protrusion 31 of the gear 27 disengages from the blocking member 30 and is pushed outward by the spring 32. Thus, the gear 27 is embedded in the slot 33, and the movement of the gear 27 causes the insert 34 to be embedded in the limiting groove 35. Thus, the insert 34 restricts the gear 27, preventing the rack 28 and take-up roller 21 from being pushed and rotated by the internal spring 23, which would cause the take-up roller 21 to pull the rope 24 again.

[0019] The first limiting groove 35 is provided for the through gear 27, and the second limiting groove 36 is provided on the protrusion 31 and the gear 27 to accommodate the embedded blocking member 30, and the second limiting groove 36 passes through the gear 27 and the connecting roller 26. When gear 27 moves to the end of rack 28 and is pushed by spring 32, causing gear 27 to engage and disengage from rack 28 and engage in slot 33, insert 34 will simultaneously engage in limiting slot 35. At this time, insert 34 restricts the rotation of gear 27. Since gear 27 is meshed with rack 28 and is in a compressed state, and is pushed by spring 32, insert 34 restricts the rotation of gear 27. When cylinder 4 17 is re-driven and pushes the entire limiting member 11 to move, gear 27, take-up roller 21 and connecting roller 26 are driven at the same time, causing insert 34 to disengage laterally from limiting slot 35. Protrusion 31 is divided into left and right halves. The openings on both sides of limiting slot 2 36 of protrusion 31 are different sizes. When protrusion 31 is in slot 33, the side with the larger opening of limiting slot 2 36 is opposite to blocking member 30. At this point, because the protrusion 31 and the blocking member 30 are opposite each other and abut against each other, but the side with the larger opening of the second limiting groove 36 of the protrusion 31 is opposite to the blocking member 30, and the gear 27 is driven laterally by the take-up roller 21 again, the gear 27 disengages from the slot 33, and at the same time the plug 34 disengages from the first limiting groove 35, the blocking member 30 is simultaneously inserted into the second limiting groove 36 of the protrusion 31 along the side with the larger opening. By having the side with the larger opening opposite to the blocking member 30, it is ensured that it is accurately inserted into the second limiting groove 36. After the gear 27 is released from the restriction of the plug 34, the blocking member 30 immediately restricts the rotation of the gear 27 and the connecting roller 26 equally. When the pushing block 12 is in contact with the tube body, the blocking member 30 disengages from the second limiting groove 36 of the protrusion 31, and at the same time, the restriction on the gear 27 is lifted. The restriction allows the take-up roller 21 to be driven to rotate by the spring 23. Under normal conditions, the protrusion 31 is driven to rotate by the spring 23 after it has just left the restriction of the blocking member 30. The limiting groove 36 of the protrusion 31 is misaligned with the blocking member 30. Therefore, when the cylinder 17 moves backward, the blocking member 30 cannot be inserted into the limiting groove 36. This is why the blocking member 30 blocks the gear 27 and pushes it backward to compress the spring 32. After the cylinder 17 stops, the angle of the gear 27 meshing with the teeth makes the limiting groove 36 parallel to the blocking member 30. The blocking member 30 will be opposite to the limiting groove 36 under the push of the spring 32. When the gear 27 moves and is blocked by the teeth to rotate, the limiting groove 36 is opposite to the blocking member 30 due to rapid rotation, but it cannot be inserted after the rapid rotation.

[0020] With the above settings, when cylinder 4 17 drives and pushes the limiting member 11 to move closer to the tube body, the connecting roller 26 and gear 27 move at the slot 33, and the insert 34 slides out of the limiting groove 1 35 and disengages from the limiting groove 1 35. Then the limiting groove 2 36 is opposite to the blocking member 30, and the forward-moving gear 27 and connecting roller 26 cause the blocking member 30 to be embedded in the limiting groove 2 36, and maintain the rotation of the limiting gear 27, connecting roller 26 and winding roller 21. After the pushing block 12 is in contact with the tube body, the gear 27 and connecting roller 26 are released from the limitation, and the spring 23 releases its elasticity to drive the winding roller 21 to rotate and wind up the pull rope 1 24. Conversely, after cylinder 4 17 resets, As the spring 23 pushes, the second limiting groove 36 of the protrusion 31 is not opposite to the blocking member 30. At this time, the movement will cause the blocking member 30 to block the pushing gear 27 and the protrusion 31 from moving backward and compress the spring 32. At the same time, the gear 27 meshes with the rack 28, and the backward movement will drive the gear 27 and the take-up roller 21 to rotate, recompressing the spring 23 and pulling the second pull rope 25, so that the pushing block 12 is reset and moves to the slot 33 to disengage from the blocking member 30. The spring 32 then pushes the gear 27 to move and misaligns with the rack 28. At the moment the gear 27 and the rack 28 misalign, the insert 34 is inserted into the first limiting groove 35 to restrict the gear 27 and prevent the spring 23 in the take-up roller 21 from being released.

[0021] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A small-field torque tube drilling device, comprising a device body (1) and a drill bit (2), wherein a drive motor (3) is provided at the rear end of the drill bit (2), a pusher (4) for limiting the tube body is slidably connected on the device body (1), a cylinder (5) for driving is provided at the rear end of the pusher (4), and a baffle plate (6) for abutting against the tube body is provided at a distance from the cylinder (5) on the device body (1), characterized in that: The upper end of the main body (1) of the device is slidably connected to a clamping member (7) for limiting and holding the tube body. The main body (1) of the device is provided with two rolling members (8) for receiving and supporting the tube body. The tube body is embedded between the two rolling members (8). The main body (1) of the device is provided with a second cylinder (9) connected to the clamping member (7) and pushing the clamping member (7) to move. The lower end of the two rolling members (8) is provided with a third cylinder (10) for pushing the rolling members (8) to move upward. The two sides of the main body (1) are provided with limiting members (11) that are vertically offset from the clamping member (7) and used to clamp the tube body. The limiting members (11) are provided with rubber pushing blocks (12) that fit with the tube body and are used to push the tube body to rotate. A sensor (13) is provided at cylinder 1 (5), and a controller (14) for receiving the signal from sensor 1 (13) is provided at cylinder 1 (5) and drill bit (2). A controller (25) identical to controller 1 (14) is provided on cylinder 2 (9), and the driving time of cylinder 2 (9) is later than that of cylinder 1 (5). The time when the drill bit (2) is driven by controller 1 (14) is later than that of cylinder 2 (9). A sensor (26) for sensing the upward movement of the tube body is provided on the limiting member (11). A cylinder 4 (17) for controlling the movement of the limiting member (11) is provided on the main body of the equipment (1). A controller 3 (18) for receiving the signal from sensor 2 (16) is provided on the cylinder 4 (17). A control component for controlling the movement of the push block (12) is provided on the limiting member (11).

2. The small mirror field torque tube drilling device according to claim 1, characterized in that: The control component includes a connecting belt (19) connected to the push block (12). The limiting member (11) is provided with a support roller (20) that supports the connecting belt (19) and accommodates the winding of the connecting belt. A take-up roller (21) is rotatably connected in the limiting member (11). A pull rope (22) for pulling the connecting belt (19) is wound on the take-up roller (21). A spring (23) for pushing the take-up roller (21) to rotate and take up the winding is provided between the take-up roller (21) and the limiting member (11). The pull rope (22) is divided into pull rope one (24) and pull rope two (25). The pull rope one (24) and pull rope two (25) are wound in opposite directions. The pull rope one (24) and pull rope two (25) are staggered. An adjustment component for adjusting the take-up roller (21) is provided on the limiting member (11).

3. The small mirror field torque tube drilling device according to claim 2, characterized in that: The adjustment assembly includes a connecting roller (26) connected to the take-up roller (21), a gear (27) is slidably connected to the connecting roller (26), the main body of the equipment (1) is provided with a rack (28) outside the limiting member (11) that meshes with the gear (27) and pushes the gear (27) to rotate, and the main body of the equipment (1) is provided with a fixing member (29) outside the limiting member (11) for supporting the rack (28), the fixing member (29) is provided with a blocking member (30) for pushing the gear (27) to slide and mesh with the rack (28), the gear (27) is provided with a protrusion (31) that abuts against the blocking member (30), and the abutment surface between the protrusion (31) and the blocking member (30) is an arc surface.

4. The small mirror field torque tube drilling device according to claim 3, characterized in that: A spring (32) for pushing the gear (27) to reset is provided between the gear (27) and the take-up roller (21). The fixing member (29) is provided with a slot (33) for accommodating the gear (27) at the opposite end of the rack (28). A plug (34) for embedding the gear (27) is provided in the slot (33). A limiting groove (35) for accommodating the plug (34) is provided on the gear (27).

5. The small mirror field torque tube drilling device according to claim 4, characterized in that: The first limiting groove (35) is provided for the through gear (27), and the second limiting groove (36) is provided on the protrusion (31) and the gear (27) to accommodate the embedded blocking member (30), and the second limiting groove (36) passes through the gear (27) and the connecting roller (26).

6. The small mirror field torque tube drilling device according to claim 5, characterized in that: The protrusion (31) is divided into left and right halves. The openings on both sides of the upper limit groove (36) of the protrusion (31) are different in size. When the protrusion (31) is located in the slot (33), the side with the larger opening of the upper limit groove (36) is opposite to the blocking member (30).

7. The small mirror field torque tube drilling device according to claim 1, characterized in that: The limiting member (11) is symmetrically arranged along the center of the pipe body, and the limiting member (11) increases according to the length of the pipe body.

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