A kind of excavator protection beam pin hole punching device

Abstract

This invention discloses a device for drilling pin holes in excavator protective beams, relating to the field of excavator protective beam processing technology. It includes a conveyor belt with a support on its outer side, a gripper in the middle of the support, and a slider above the support; an adjustment unit including a robotic arm with an installation tube at its lower end and an installation ring at its lower end, the inner ring of which is connected to a nozzle; a drive unit including a turntable disposed within the installation ring; and a docking unit including a drill bit slidably connected within the turntable. A second motor is disposed within the installation tube, and a drive rod is connected to the output shaft of the second motor, which is connected to the drill bit. This invention allows for arbitrary adjustment of the protective beam and drill bit positions according to requirements, and also allows for the replacement of different drill bits as needed, thereby addressing different processing requirements and processes and improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of excavator protective beam processing, specifically to a device for drilling pin holes in excavator protective beams. Background Technology

[0002] Excavator guard beams are important safety components installed at the front or rear of the excavator frame. These beams are typically welded from high-strength steel plates and require multiple pin holes and mounting holes to be machined. With the diversification of excavator models, the size, thickness, and hole layout of the guard beams vary significantly, posing a serious challenge to the drilling process.

[0003] First, traditional drilling devices are mostly specialized tooling, with fixed positioning fixtures and drill jigs designed for a specific type of protective beam. When producing different models of products, the entire fixture needs to be replaced or the positioning mechanism needs to be readjusted.

[0004] Secondly, the wear-resistant steel plates used for the protective beams have high hardness, requiring the use of carbide drill bits, coated drill bits, or solid carbide tools. Furthermore, different diameter pin holes (such as rough pre-drilling, finish reaming, and chamfering) require different specifications of tools; in addition, burrs on the hole openings after machining need to be removed with a grinding rod. Rapid tool wear and frequent replacement are common; however, existing drilling devices typically use tapered shanks or threaded connections. Changing tools requires a special wrench, loosening the lock nut, removing the old tool, installing the new tool, retightening and readjusting—a cumbersome and time-consuming process. Moreover, the pin holes often require grinding to remove burrs after machining, necessitating the relocation of the protective beam to another workstation, significantly increasing manufacturing costs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a device for drilling pin holes in excavator protective beams. This device allows for arbitrary adjustment of the positions of the protective beam and drill bit as needed, and also enables the replacement of different drill bits to meet various processing requirements and procedures, thereby improving work efficiency.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A device for drilling pin holes in excavator guard beams, comprising: A conveyor belt, wherein a support is provided on the outer side of the conveyor belt, a gripper is provided in the middle of the support, and a slider is provided on the top of the support; The adjustment unit includes a robotic arm, the lower end of which is provided with an installation tube, the lower end of which is provided with an installation ring, and the inner ring of the installation ring is connected to a nozzle. The drive unit includes a turntable disposed within the mounting ring; The docking part includes a drill bit that is slidably connected inside the turntable. A second motor is installed inside the mounting tube, and a drive rod is connected to the output shaft of the second motor. The drive rod is connected to the drill bit. The conveyor belt is used to transport the excavator protective beam, and the second motor and drive rod slide along the inner cavity of the mounting tube to drive the drill bit to extend or retract from the turntable; The turntable rotates along the mounting ring, driving different drill bits to move to the drive rod.

[0007] Preferably, the conveyor belt is provided in two sets, arranged left and right, with a gap in the middle of the two sets of conveyor belts. Tracks are provided on the front and back sides of the gap, the two sets of tracks are at the same height as the two sets of conveyor belts, and a wastewater tank is provided in the gap between the two sets of tracks.

[0008] Preferably, the bracket is arranged on the front and rear sides of the two sets of tracks, and a first electric push rod is fixedly installed at the lower middle part of the front and rear sides of the bracket. The two sets of first electric push rods are symmetrically arranged, and a gripper is fixedly connected to the output end of the two sets of first electric push rods.

[0009] Preferably, an electric guide rail is fixedly installed at the upper end of the bracket, and a slider is slidably connected inside the electric guide rail.

[0010] Preferably, the robotic arm is fixedly installed in the lower middle part of the slider, and the control end of the robotic arm is fixedly connected to a mounting tube, with a mounting ring fixedly connected to the end of the mounting tube away from the robotic arm.

[0011] Preferably, a water supply pipe is fixedly connected to the outer edge of the mounting pipe, and the outlet of the water supply pipe extends out of the inner ring of the mounting ring and is connected to a nozzle, the outlet of the nozzle facing the upper middle area of ​​the mounting ring.

[0012] Preferably, the inner cavity of the mounting ring has an annular cavity, and a turntable is rotatably connected inside the annular cavity, with a toothed ring fixedly connected to the inner ring of the turntable.

[0013] Preferably, a first motor is fixedly installed in the lower end cavity of the mounting tube, and a gear is fixedly connected to the output shaft of the first motor. The gear is rotatably connected to the middle of the inner cavity of the mounting ring, and the outer ring of the gear meshes with the tooth groove of the gear ring.

[0014] Preferably, the inner cavity of the turntable has multiple sets of strip grooves, and a sliding plate is slidably connected in each strip groove. A spring is fixedly connected to the side of the sliding plate away from the mounting tube, and the other end of the spring is fixedly connected to the middle of the inner cavity of the turntable. A drill bit is rotatably connected to the middle of the sliding plate. The end of the drill bit facing the mounting tube penetrates through and extends out of the sliding plate, and a connecting groove is opened in the middle of the end extending out of the sliding plate.

[0015] Preferably, a second electric actuator is fixedly connected to the middle of the inner cavity of the mounting tube, a second motor is fixedly connected to the output end of the second electric actuator, a drive rod is fixedly connected to the output shaft of the second motor, one end of the drive rod near the mounting ring passes through the mounting tube and extends into the inner cavity of the mounting ring, and the other end of the drive rod extending into the inner cavity of the mounting ring is movably inserted into the connecting groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The gripper and adjustment unit of this invention can adjust the position of the protective beam and the drill bit arbitrarily according to the needs, ensuring that the drilling operation can be carried out smoothly. In use, the conveyor belt transports the protective beam to the position of the gripper, and then the gripper moves to clamp and fix the protective beam. At the same time, the two sets of grippers can move in opposite directions, that is, one set extends and the other set retracts, driving the protective beam to move back and forth, so that both ends of the protective beam can be moved to the bottom of the drill bit for drilling. Then the slider slides and drives the robotic arm to move. Then the robotic arm controls the drill bit to approach the position of the protective beam where drilling is required. The drive unit and docking unit of the present invention can be replaced with different drill bits as needed, thereby meeting different processing requirements and processes and improving work efficiency. When in use, the turntable is driven to rotate, and the appropriate drill bit is moved to the position of the drive rod. Then, the second motor slides outward along the inner cavity of the mounting tube and drives the drive rod to connect with the drill bit, pushing the drill bit out of the mounting ring. Then, the second motor drives the drill bit to perform a rotating drilling operation. The turntable and mounting ring of the present invention can protect the stored drill bits, preventing damage to the remaining drill bits during drilling and affecting subsequent processing operations. During use, when the drill bits are replaced, the replaced drill bits will be retracted into the turntable and housed in the mounting ring as the turntable rotates, isolating the drill bits from the external environment and preventing damage to the drill bits during drilling, which would affect subsequent processing operations. Attached Figure Description

[0017] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the support structure in this invention; Figure 3 This is a schematic diagram of the adjustment part in this invention; Figure 4 This is a schematic diagram showing the position of the nozzle in this invention; Figure 5 This is a cross-sectional view of the mounting tube in this invention; Figure 6This is a cross-sectional schematic diagram of the turntable in this invention; Figure 7 This is a schematic diagram showing the position of the toothed ring in this invention; Figure 8 This is a schematic diagram showing the disassembly of the drill bit and the slide plate in this invention; Figure 9 This is a schematic diagram showing the location of the connecting groove in this invention; Figure 10 This is a schematic diagram showing the positions of the drive rod and the connecting groove in this invention; Figure 11 This is a schematic diagram showing the disassembled drive rod and connecting groove in this invention.

[0018] The diagram is labeled as follows: 10. Conveyor belt; 11. Track; 12. Wastewater tank; 13. Support; 14. First electric actuator; 15. Gripper; 16. Electric guide rail; 17. Slider; 20. Adjustment unit; 21. Robotic arm; 22. Mounting pipe; 23. Mounting ring; 24. Water supply pipe; 25. Nozzle; 30. Drive unit; 31. Turntable; 32. Gear ring; 33. First motor; 34. Gear; 40. Connecting part; 41. Slide plate; 42. Spring; 43. Drill bit; 44. Connecting groove; 45. Second electric actuator; 46. Second motor; 47. Drive rod. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0020] like Figures 1 to 11 As shown, this embodiment provides a device for drilling pin holes in excavator protective beams, including: A conveyor belt 10 is provided with a support 13 on its outer side, a gripper 15 is provided in the middle of the support 13, and a slider 17 is provided above the support 13. The adjustment unit 20 includes a robotic arm 21, a mounting tube 22 is provided at the lower end of the robotic arm 21, a mounting ring 23 is provided at the lower end of the mounting tube 22, and a nozzle 25 is connected to the inner ring of the mounting ring 23. Drive unit 30, drive unit 30 includes turntable 31, turntable 31 is disposed inside mounting ring 23; The docking part 40 includes a drill bit 43, which is slidably connected in the turntable 31. A second motor 46 is installed in the mounting tube 22. A drive rod 47 is connected to the output shaft of the second motor 46 and is connected to the drill bit 43. Among them, the conveyor belt 10 is used to transport the excavator protective beam, and the second motor 46 and drive rod 47 slide along the inner cavity of the mounting tube 22 to drive the drill bit 43 to extend or retract the turntable 31; The turntable 31 rotates along the mounting ring 23, driving different drill bits 43 to move to the drive rod 47.

[0021] It should be noted that, in order to ensure the stable use and operation of the device, the device should have built-in electrical control components and drive equipment, and be connected to mains power so that the various components in the device can operate stably and normally.

[0022] In this embodiment, during use, the conveyor belt 10 transports the protective beam to the position of the gripper 15. The gripper 15 then clamps and fixes the protective beam. Next, the slider 17 slides, causing the robotic arm 21 to move. The robotic arm 21 then controls the drill bit 43 to approach the location on the protective beam where a hole needs to be drilled. Subsequently, according to the drilling requirements, the turntable 31 is driven to rotate, moving the appropriate drill bit 43 to the position of the drive rod 47. Then, the second motor 46 slides outward along the inner cavity of the mounting tube 22, driving the drive rod 47 to connect with the drill bit 43, pushing the drill bit 43 out of the mounting ring 23. The second motor 46 then drives the drill bit 43 to perform the rotating drilling operation. Simultaneously, the nozzle 25 sprays liquid to cool and lubricate the drilling location and the drill bit 43, ensuring smooth drilling operations.

[0023] Please refer to it again. Figures 1 to 3 The conveyor belt 10 is provided in two sets, arranged on the left and right, with a gap in the middle of the two sets of conveyor belts 10. Tracks 11 are provided on the front and back sides of the gap. The two sets of tracks 11 are at the same height as the two sets of conveyor belts 10, and a wastewater tank 12 is provided in the gap between the two sets of tracks 11. The bracket 13 is set on the front and rear sides of the two sets of tracks 11, and the lower middle part of the front and rear sides of the bracket 13 is fixedly installed with the first electric push rod 14. The two sets of first electric push rods 14 are symmetrically arranged, and the output end of the two sets of first electric push rods 14 is fixedly connected with the gripper 15. An electric guide rail 16 is fixedly installed on the upper end of the bracket 13, and a slider 17 is slidably connected inside the electric guide rail 16.

[0024] It should be noted that there is a gap between the two sets of tracks 11 and the first electric push rod 14, so that after the gripper 15 clamps the protective beam, one of the two sets of first electric push rods 14 can retract directly and the other set can extend, so that both ends of the protective beam can be transported to the top of the wastewater tank 12 for pin hole drilling at both ends of the protective beam. The wastewater tank 12 should be equipped with a drain outlet at the bottom and should have a built-in filter screen inside for subsequent cleaning and recycling (this is a common technical structure in the prior art, and will not be described in detail here). Both sets of tracks 11 have built-in drive devices, and the drive devices of the two sets of tracks 11 should be connected together in series or other ways to drive them to run synchronously. The gripper 15 is a gripping device that can rotate outwards, and its opening angle should be greater than 180 degrees to avoid affecting the stable conveying of the protective beam on the track 11. Slider 17 is an I-shaped block to prevent it from falling off and affecting its use.

[0025] In this embodiment, the conveyor belt 10 transports the protective beam onto the track 11. Then, driven by the first electric actuators 14, the grippers 15 approach each other, clamping and fixing the protective beam from both the front and rear sides to prevent displacement during drilling. Simultaneously, the two sets of first electric actuators 14 can extend and retract, moving the protective beam back and forth to adjust its position. This moves the area to be processed (the pin hole area) above the wastewater tank 12, ensuring that the waste chips and coolant generated during drilling fall directly into the wastewater tank 12, preventing pollution of the working environment. Meanwhile, the electric guide rail 16 at the upper end of the bracket 13 drives the slider 17 to slide along the guide rail. The slider 17 then drives the mechanical arm 21, which is fixedly connected to it, to adjust its lateral position, further coordinating with the track 11's transport of the protective beam to achieve precise positioning and drilling of the pin holes at different positions on the protective beam.

[0026] Please refer to it again. Figures 3 to 5 The robotic arm 21 is fixedly installed in the lower middle part of the slider 17. The control end of the robotic arm 21 is fixedly connected to the mounting tube 22, and the end of the mounting tube 22 away from the robotic arm 21 is fixedly connected to the mounting ring 23. The outer edge of the mounting pipe 22 is fixedly connected to the water supply pipe 24 through the pipe sleeve, and the outlet of the water supply pipe 24 extends out of the inner ring of the mounting ring 23 and is connected to the nozzle 25. The outlet of the nozzle 25 faces the upper middle area of ​​the mounting ring 23.

[0027] It should be noted that the robotic arm 21 is a six-axis arm to improve its flexibility, and the robotic arm 21 should have a telescopic function in order to meet the needs of drilling pin holes at different positions of the protective beam. Preferably, the water supply pipe 24 should be externally connected to a pipeline and a water pump to ensure stable operation; The outlet of the nozzle 25 should face the drill bit 43, and the nozzle 25 should be positioned inside the mounting ring 23 and should not extend out of the mounting ring 23 to avoid affecting the drilling operation. A sleeve is provided on the outside of the water supply pipe 24, and the sleeve is fixedly connected to the outer edge of the installation pipe 22 and the installation ring 23.

[0028] In this embodiment, the robotic arm 21 is used to flexibly move and adjust the posture of the mounting tube 22 and the mounting ring 23, ensuring that the drill bit 43 can be accurately aligned with the pin hole to be machined on the protective beam. Once the robotic arm 21 is in place, the mounting tube 22 and the mounting ring 23 are fixed in place. The water pump connected to the water supply pipe 24 is activated, pumping coolant or cutting fluid through the water supply pipe 24 to the nozzle 25. The nozzle 25 precisely sprays the liquid in a mist or columnar form onto the upper part of the mounting ring 23, i.e., the drilling position where the drill bit 43 contacts the protective beam. In this way, when the drill bit 43 rotates at high speed, the coolant can promptly remove the heat generated by cutting, reducing the temperature of the drill bit 43 and reducing wear. Simultaneously, it can wash away metal debris inside the hole, ensuring the machining accuracy and surface quality of the hole and extending the tool life.

[0029] Please refer to it again. Figures 5 to 7 The inner cavity of the mounting ring 23 is provided with an annular cavity, and a turntable 31 is rotatably connected to the annular cavity through a ball bearing. A toothed ring 32 is fixedly connected to the inner ring of the turntable 31. The lower end of the mounting tube 22 is fixedly mounted with a first motor 33. A gear 34 is fixedly connected to the output shaft of the first motor 33. The gear 34 is rotatably connected to the middle of the inner cavity of the mounting ring 23 through a ball bearing, and the outer ring of the gear 34 meshes with the tooth groove of the gear ring 32.

[0030] It should be noted that the lower ends of the mounting ring 23 and the mounting tube 22 are both equipped with protective shells, and the first motor 33 and the gear 34 are both housed inside the protective shells to prevent damage. The inner cavity of the mounting ring 23 has a pre-reserved annular groove, and the toothed ring 32 is slidably connected in the groove to ensure the stability of the rotation of the turntable 31.

[0031] In this embodiment, when different types of drill bits 43 need to be moved to the position of the drive rod 47, the first motor 33 drives the gear 34 to rotate, which in turn drives the gear ring 32 and the turntable 31 to rotate within the mounting ring 23. This allows the drill bits 43 in different slots to be rotated sequentially to the positions corresponding to the drive rod 47, enabling rapid switching of the drill bits 43 to meet the drilling requirements of different sized pin holes on the protective beam.

[0032] Please refer to it again. Figures 7 to 11 The inner cavity of the turntable 31 has multiple sets of strip grooves, and each strip groove is slidably connected to a slide plate 41. A spring 42 is fixedly connected to the side of the slide plate 41 away from the mounting tube 22. The other end of the spring 42 is fixedly connected to the middle of the inner cavity of the turntable 31. A drill bit 43 is rotatably connected to the middle of the slide plate 41 through a ball bearing. The end of the drill bit 43 facing the mounting tube 22 penetrates through and extends out of the slide plate 41, and a connecting groove 44 is provided in the middle of the end of the slide plate 41 extending out of the slide plate 41. A second electric actuator 45 is fixedly connected to the middle of the inner cavity of the mounting tube 22. A second motor 46 is fixedly connected to the output end of the second electric actuator 45. A drive rod 47 is fixedly connected to the output shaft of the second motor 46. One end of the drive rod 47 near the mounting ring 23 passes through the mounting tube 22 and extends into the inner cavity of the mounting ring 23. The other end of the drive rod 47 extending into the inner cavity of the mounting ring 23 is movably inserted into the connecting groove 44.

[0033] It should be noted that, under normal conditions, the spring 42 always pushes the slide plate 41 toward the mounting tube 22, so that under normal conditions, the drill bit 43 is always stored in the inner cavity of the turntable 31. The drill bit 43 is provided in multiple sets, and the models and sizes of the drill bits 43 are different (including but not limited to grinding rods, chamfering cutters, and drill bits 43 of different sizes), so that different tools can be moved to the position of the drive rod 47 to wait for ejection and operation according to the processing requirements; A round rod with an I-shaped cross-section is provided at the connection position between the drill bit 43 and the slide plate 41 to ensure the stability of the rotation of the drill bit 43 and prevent the drill bit 43 from shaking randomly, which would affect the accuracy of drilling. The connecting groove 44 is a hexagonal groove, and the drive rod 47 is also a matching hexagonal groove. At the same time, the end of the drive rod 47 facing the connecting groove 44 has a rounded chamfer, so that the drive rod 47 can be smoothly inserted into the connecting groove 44. A Chinese-shaped mounting plate is fixedly connected to the output end of the second electric actuator 45, and the second motor 46 is fixedly mounted on the mounting plate (e.g., Figure 10 As shown), this is intended to ensure the stability of the second motor 46 installation and the smoothness and accuracy of its subsequent movement; Through slots are provided on the front and rear sides of the turntable 31 and the outer side of the mounting ring 23 so that the drill bit 43 can smoothly extend out of the mounting ring 23 for processing operations. Preferably, in order to ensure that the drill bit 43 can be accurately moved to the position of the drive rod 47 and aligned with the turntable 31 each time it rotates, a position sensor can be set on the outer ring of the turntable 31 and the inner cavity of the mounting ring 23. When the position sensor senses that the turntable 31 has rotated to the correct position, the first motor 33 is controlled to stop running, so that the turntable 31 remains fixed (this is a common technical structure in the prior art, and will not be described in detail here). Here, when the drive rod 47 is inserted into the connecting slot 44, the second motor 46 can drive the drive rod 47 to rotate slowly so that the drive rod 47 can smoothly align and be inserted into the connecting slot 44.

[0034] In this embodiment, when the drill bit 43 needs to be replaced, the second electric actuator 45 retracts, driving the second motor 46 to retract as well. This causes the drive rod 47 to disengage from the currently connected connecting slot 44 and the drill bit 43. Subsequently, the slide plate 41 retracts into the slot of the turntable 31 under the reset action of the spring 42. The turntable 31 then rotates, driving different types of drill bits 43 to the position of the drive rod 47. At this point, the second electric actuator 45 extends again, pushing the second motor 46 and the drive rod 47 towards the drill bit 43. This allows the drive rod 47 to insert into the connecting slot 44, achieving precise docking with the new drill bit 43. After docking, the second electric actuator 45 continues to push the second motor 46 and the drive rod 47 outwards. The drive rod 47 overcomes the spring force of the spring 42, pushing the drill bit 43 out of the mounting ring 23 until the preset drilling feed is reached. Then, the second motor 46 rotates at high speed, driving the drill bit 43 to rotate via the drive rod 47, thus performing the drilling operation on the protective beam.

[0035] The working principle of this invention is as follows: During use, the conveyor belt 10 transports the protective beam to the track 11. Then, the grippers 15, driven by the first electric push rod 14, move closer together and clamp the protective beam. Next, the electric guide rail 16 drives the slider 17 and the robotic arm 21 to move. The robotic arm 21 enables flexible movement and posture adjustment of the mounting tube 22 and mounting ring 23, ensuring that the drill bit 43 can accurately align with the pin hole position on the protective beam. Subsequently, different drill bits 43 are switched according to the drilling requirements. At this time, the second electric push rod 45 retracts, driving the second motor 46 to retract, causing the drive rod 47 to disengage from the currently connected connecting groove 44 and the drill bit 43. Then, the slide plate 41 retracts into the slot of the turntable 31 under the reset action of the spring 42. Next, the first motor 33 drives the gear 34 to rotate, which in turn drives the gear ring 32 and the turntable 31 to rotate within the mounting ring 23. This sequentially rotates the drill bits 43 in different slots to the positions corresponding to the drive rod 47. Subsequently, the second electric actuator 45 extends again, pushing the second motor 46 and drive rod 47 towards the drill bit 43. This causes the drive rod 47 to insert into the connecting groove 44 and push the drill bit 43 out of the mounting ring 23 until the preset drilling feed is reached. Then, the second motor 46 rotates at high speed, driving the drill bit 43 to rotate via the drive rod 47, performing drilling operations on the protective beam. Simultaneously, the water pump connected to the water supply pipe 24 starts, pumping coolant or cutting fluid through the water supply pipe 24 to the nozzle 25. The nozzle 25 precisely sprays the liquid in a mist or columnar form onto the drilling position where the drill bit 43 contacts the protective beam, reducing the temperature of the drill bit 43 and minimizing wear.

[0036] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A shroud beam pin hole punch apparatus for excavators, characterized by: Include: The outer side of the conveying belt (10) is provided with a support (13), the middle part of the support (13) is provided with a clamp jaw (15), the upper side of the support (13) is provided with a sliding block (17); The adjusting part (20) includes a mechanical arm (21), the lower end of the mechanical arm (21) is provided with a mounting pipe (22), the lower end of the mounting pipe (22) is provided with a mounting ring (23), the inner ring of the mounting ring (23) is connected with a spray head (25); The driving part (30) includes a rotating disc (31), the rotating disc (31) is arranged in the mounting ring (23); The butt joint part (40) includes a drill bit (43), the drill bit (43) is connected in the rotating disc (31), the second motor (46) is arranged in the mounting pipe (22), the output shaft of the second motor (46) is connected with a driving rod (47), the driving rod (47) is connected with the drill bit (43); Wherein, the conveying belt (10) is used for conveying the excavator protection beam, the second motor (46) and the driving rod (47) slide along the inner cavity of the mounting pipe (22), drive the drill bit (43) to extend or retract the rotating disc (31); The rotating disc (31) rotates along the mounting ring (23), and drives different drill bits (43) to move to the driving rod (47).

2. The excavator guard beam pin hole punch apparatus of claim 1, wherein: The conveying belt (10) is provided with two groups, which are arranged left and right, and the middle part of the two groups of conveying belts (10) is left with a gap, the front and back sides of the gap are provided with tracks (11), the two groups of tracks (11) are at the same height with the two groups of conveying belts (10), and the gap between the two groups of tracks (11) is provided with a waste water tank (12).

3. The excavator guard beam pin hole punch apparatus of claim 2, wherein: The support (13) is arranged on the front and back sides of the two groups of tracks (11), and the middle part of the front and back sides of the support (13) is fixedly installed with a first electric push rod (14), the two groups of first electric push rods (14) are symmetrically arranged, and the output ends of the two groups of first electric push rods (14) are fixedly connected with the clamp jaw (15).

4. The excavator guard beam pin hole punch apparatus of claim 1, wherein: The upper end of the support (13) is fixedly installed with an electric guide rail (16), and the sliding block (17) is slidably connected in the electric guide rail (16).

5. The excavator guard beam pin hole punch apparatus of claim 4, wherein: The mechanical arm (21) is fixedly installed below the middle part of the sliding block (17), the control end of the mechanical arm (21) is fixedly connected with the mounting pipe (22), and the end of the mounting pipe (22) away from the mechanical arm (21) is fixedly connected with the mounting ring (23).

6. The excavator guard beam pin hole punch apparatus of claim 5, wherein: The outer edge of the mounting pipe (22) is fixedly connected with a water delivery pipe (24), the outlet of the water delivery pipe (24) extends out of the inner ring of the mounting ring (23), and is connected with the spray head (25), and the outlet of the spray head (25) faces the middle upper side area of the mounting ring (23).

7. The excavator guard beam pin hole punch apparatus of claim 5, wherein: The inner cavity of the mounting ring (23) is provided with an annular cavity, and the rotating disc (31) is rotatably connected in the annular cavity, and the inner ring of the rotating disc (31) is fixedly connected with a gear ring (32).

8. The excavator guard beam pin hole punch apparatus of claim 7, wherein: The lower end cavity of the mounting pipe (22) is fixedly provided with a first motor (33), the output shaft of the first motor (33) is fixedly connected with a gear (34), the gear (34) is rotatably connected to the middle part of the inner cavity of the mounting ring (23), and the outer ring of the gear (34) is engaged with the tooth groove (32).

9. The excavator guard beam pin hole punch apparatus of claim 7, wherein: The inner cavity of the rotating disc (31) is provided with a plurality of groups of strip-shaped grooves, and the strip-shaped grooves are all slidably connected with sliding plates (41); the side, away from the mounting pipe (22), of the sliding plate (41) is fixedly connected with a spring (42); the other end of the spring (42) is fixedly connected to the middle part of the inner cavity of the rotating disc (31); the middle part of the sliding plate (41) is rotatably connected with a drill bit (43); the end of the drill bit (43), towards the mounting pipe (22), penetrates through and extends out of the sliding plate (41); and the middle part of the end, extending out of the sliding plate (41), is provided with a connecting groove (44).

10. The excavator guard beam pin hole punch apparatus of claim 9, wherein: The middle part of the inner cavity of the mounting pipe (22) is fixedly connected with a second electric push rod (45); the output end of the second electric push rod (45) is fixedly connected with a second motor (46); the output shaft of the second motor (46) is fixedly connected with a driving rod (47); the end, close to the mounting ring (23), of the driving rod (47) penetrates through the mounting pipe (22) and extends into the inner cavity of the mounting ring (23); and the end, extending into the inner cavity of the mounting ring (23), of the driving rod (47) is movably inserted into the connecting groove (44).

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