A coal mining machine pump box oil pipe bender

Abstract

The present application belongs to the technical field of oil pipe bending, and particularly relates to a coal mining machine pump box oil pipe bender, which comprises a mounting frame, an operation panel arranged on the upper side wall of the mounting frame, a PLC controller fixedly connected to the lower side wall of the mounting frame, and a bending assembly. When the bender is used to bend the oil pipe, liquid can be delivered into the oil pipe, and the internal pressure of the oil pipe is kept high. The high-pressure liquid can support the inner wall of the oil pipe to some extent, so that the oil pipe is not easy to collapse or excessively deform during the bending process, and the shape and size precision of the oil pipe can be maintained, and the bending quality is improved. After the oil pipe is bent, the internal part of the oil pipe can be automatically detected. If it is found that the inner lining of the oil pipe is separated from the oil pipe due to too fast bending speed or too large bending angle, and the inner diameter of the bending part is reduced, the bending part can be quickly located, and the design of the bending part can be optimized by the operator.

Description

Technical Field

[0001] This invention belongs to the field of tubing bending technology, and in particular relates to a tubing bender for a coal mining machine pump box. Background Technology

[0002] The valve body components of the coal mining machine pump box are mostly connected by cold-drawn seamless steel pipes (oil pipes) to transmit hydraulic oil. In order to install the oil pipes in a specific position in a reasonable way and reduce unnecessary space occupation, it is necessary to use a bending tool to bend the oil pipes to adapt to the complex spatial structure. For example, a coal mining machine pump box oil pipe bending tool proposed in patent publication number CN216150757U can effectively protect the surface wall of the oil pipe and improve product quality.

[0003] To enhance the wear resistance and corrosion resistance of the inner wall, and improve the flow performance of oil within the tubing, some tubings are lined with inner walls made of materials such as high-molecular-weight polyethylene, polytetrafluoroethylene, or polyurethane. However, when a bending machine rapidly bends a tubing with such a liner at an excessively large angle, the liner often cannot adapt to the deformation in time, leading to separation between the liner and the inner wall of the tubing. Once the liner separates from the inner wall of the tubing, the delivery channel of the tubing narrows, severely affecting the delivery performance of the hydraulic oil. Therefore, operators need to optimize the design of tubing bends. Since tubing typically has multiple bends, it is difficult for operators to quickly locate the bend where the liner separates from the tubing, which greatly hinders subsequent improvements to the tubing bend design.

[0004] To address this issue, a coal mining machine pump box oil pipe bender is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a coal mining machine pump box oil pipe bender.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a coal mining machine pump box oil pipe bender, comprising a mounting frame and an operation panel disposed on the upper side wall of the mounting frame, wherein a PLC controller is fixedly connected to the lower side wall of the mounting frame, and further comprising:

[0007] A bending assembly is disposed on the upper side wall of the mounting bracket, and the surface of the bending assembly is provided with bending wheels;

[0008] A fixed conveying assembly is disposed on the upper side wall of the mounting frame. The upper side wall of the mounting frame is driven by a linear motor to move the fixed conveying assembly and the oil pipe to be processed, conveying the oil pipe to be processed toward the bending assembly.

[0009] A pumping assembly is disposed below the mounting bracket and is fixedly connected to the mounting bracket via a placement plate. The pumping assembly is connected to the fixed conveying assembly and communicates with the oil pipe to be processed.

[0010] The repositioning component is located behind the fixed conveying component and repositions each part of the pumping component.

[0011] A distance component, located behind the fixed conveyor assembly, marks the location of problematic bends.

[0012] Furthermore, the bending assembly includes a support platform and two limiting seats. The support platform is fixedly connected to the upper side wall of the mounting frame, and the two limiting seats are symmetrically fixedly connected to the upper side wall of the support platform. The upper side wall of the mounting frame has two placement slots, and small electric push rods are fixedly connected in the placement slots. The moving ends of the two small electric push rods are fixedly connected to the same connecting ring. The upper side wall of the connecting ring is fixedly connected to a support ring. The outer wall of the support ring is rotatably connected to a gear ring via a bearing. The upper side wall of the connecting ring is fixedly connected to an adjusting motor. The output end of the adjusting motor is fixedly connected to an adjusting gear that meshes with the gear ring. The upper side wall of the gear ring is fixedly connected to a mounting ring. The upper side wall of the mounting ring is fixedly connected to a bending plate. The bending wheel and the upper side wall of the bending plate are rotatably connected.

[0013] Furthermore, the fixed conveying assembly includes a movable box and two horizontal cylinders. The movable box is fixedly connected to the output end of a linear motor. One of the horizontal cylinders is fixedly connected to the right side wall of the movable box. The left end of the oil pipe to be processed is inserted into the horizontal cylinder on the surface of the movable box, and the right end of the oil pipe to be processed is inserted into the other horizontal cylinder. Two horizontal plates are fixedly connected to the side wall of the horizontal cylinder. A miniature electric push rod is fixedly connected to the side wall of the horizontal plate. An arc-shaped clamping plate is fixedly connected to the moving end of the miniature electric push rod.

[0014] Furthermore, the pumping assembly includes a water tank and a first pump. The water tank is fixedly connected to the upper side wall of the placement plate. A filtration mechanism is provided inside the water tank. The first pump is fixedly connected to the water tank, and the inlet end of the first pump communicates with the side wall of the water tank. The outlet end of the first pump is fixedly connected to a metal bend. The lower end of the metal bend is fixedly connected to a first S-shaped flexible hose. A horizontal shaft is rotatably connected to the rear side wall of the movable box. The front end of the horizontal shaft is located inside the movable box and is fixedly connected to a rotating cylinder. The rotating cylinder has a hollow structure. A fixed pipe is rotatably connected to the front side wall of the rotating cylinder. The lower end of the fixed pipe extends out of the movable box and communicates with the upper end of the first S-shaped flexible hose. A sliding port matching the fixed pipe is opened on the side wall of the mounting bracket. A control valve and a pressure sensor are provided inside the fixed pipe. The pressure sensor is located above the control valve. A movable flexible hose is wound around the outer wall of the rotating cylinder. The left end of the movable flexible hose communicates with the rotating cylinder, and the right end of the movable flexible hose passes through the movable box and the left horizontal cylinder. The sidewall is located inside the left horizontal cylinder. Both the moving box and the sidewall of the left horizontal cylinder have through holes that match the moving hose. After the oil pipe to be processed is inserted into the left horizontal cylinder, the right end of the moving hose is inserted into the left port of the oil pipe to be processed. The pipe wall of the moving hose located inside the oil pipe to be processed is fixedly fitted with a conical elastic cover. The left sidewall of the moving box is fixedly connected to a water bucket. The upper sidewall of the water bucket is fixedly connected to a second pump. The pressure sensor is electrically connected to the second pump through a PLC controller. The outlet end of the second pump is connected to the upper sidewall of the moving box. The lower sidewall of the water bucket and the moving box are fixedly connected to the same return water pipe with a magnetic control valve. The right sidewall of the right horizontal cylinder is fixedly connected to a circulation pipe. The left end of the circulation pipe is located inside the right port of the oil pipe to be processed. The pipe wall of the end of the circulation pipe located inside the oil pipe to be processed is fixedly fitted with a conical plug. The end of the circulation pipe extending out of the right horizontal cylinder is equipped with a solenoid valve. The circulation pipe is connected to the sidewall of the water tank through a second S-shaped hose.

[0015] Furthermore, the repositioning component includes a geared motor and a support frame. The support frame is connected to the rear side wall of the movable box, and an mounting sleeve is fixedly connected to the upper side wall of the support frame. The geared motor is fixedly connected inside the mounting sleeve. The geared motor is driven by the rear end of the horizontal shaft through a safety coupling. The geared motor is a non-brake motor.

[0016] Furthermore, the distance component includes a fixed block and a sliding cylinder. The fixed block is fixedly connected to the rear side wall of the support and the movable box. The sliding cylinder is slidably sleeved on the outside of the fixed block. A toothed plate is fixedly connected to the lower side wall of the sliding cylinder. A drive tooth that meshes with the toothed plate is fixedly sleeved on the rod wall of the horizontal shaft. A horizontal opening that matches the support is opened on the front side wall of the sliding cylinder. An indicator plate is fixedly connected to the upper side wall of the fixed block. A scale plate is fixedly connected to the upper side wall of the sliding cylinder.

[0017] Furthermore, an air pump is fixedly connected to the right side wall of the mobile box, the air outlet of the air pump is connected to the wall of the fixed pipe, and an adjustment valve is provided inside the air outlet of the air pump.

[0018] Furthermore, a buzzer is fixedly connected to the lower side wall of the mounting bracket, and the buzzer is electrically connected to the PLC controller.

[0019] Compared with existing technologies, the advantages of a coal mining machine pump box oil pipe bender are:

[0020] 1. By using the bending and pumping components, liquid can be delivered into the oil pipe when the bending machine is used to bend the oil pipe, and the oil pipe is kept at a high hydraulic pressure. The high pressure liquid can support the inner wall of the oil pipe to a certain extent, making it less likely to collapse or deform excessively during the bending process. This helps to maintain the shape and dimensional accuracy of the oil pipe and improve the bending quality.

[0021] 2. Through the fixed conveying component, distance component and pumping component, the internal structure of the oil pipe can be automatically detected after bending. If the detection finds that the inner lining of the oil pipe separates from the oil pipe due to excessive bending speed or excessive bending angle, resulting in a smaller inner diameter at the bend, the bend can be quickly located, which can help the operator to optimize the design of the bend.

[0022] 3. With the set-in return component, after the internal inspection of the oil pipe is completed, the inspection component can be automatically separated from the inside of the oil pipe, which makes it convenient for operators to inspect other oil pipes in the future, thus improving the convenience of operation.

[0023] 4. Through the pumping components, after the liquid is delivered into the oil pipe, the liquid can be used to flush the inner wall of the oil pipe, so that the impurities on the inner wall of the oil pipe are transported to the water tank, and the impurities are filtered by the filtration mechanism inside the water tank, so as to avoid the impurities inside the oil pipe from causing blockage to the hydraulic system of the coal mining machine. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a coal mining machine pump box oil pipe bender provided by the present invention;

[0025] Figure 2 This is a schematic diagram of the bending assembly in a coal mining machine pump box oil pipe bender provided by the present invention;

[0026] Figure 3 This is a top view of the support platform and limiting seat in a coal mining machine pump box oil pipe bending device provided by the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of a fixed conveying component in a coal mining machine pump box oil pipe bender provided by the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the left horizontal cylinder in a coal mining machine pump box oil pipe bender provided by the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the right cross cylinder in a coal mining machine pump box oil pipe bender provided by the present invention;

[0030] Figure 7 This is a schematic diagram of the repositioning component in the oil pipe bender of a coal mining machine pump box provided by the present invention;

[0031] Figure 8 This is a schematic diagram of the distance component in the oil pipe bending device of a coal mining machine pump box provided by the present invention.

[0032] In the diagram: 1. Mounting frame; 2. Operation panel; 3. PLC controller; 4. Bending wheel; 5. Linear motor; 6. Oil pipe to be processed; 7. Placement plate; 8. Bending assembly; 81. Support platform; 82. Limit seat; 9. Mini electric push rod; 10. Connecting ring; 11. Support ring; 12. Gear ring; 13. Adjusting motor; 14. Adjusting gear; 15. Mounting ring; 16. Bending plate; 17. Fixed conveying assembly; 171. Moving box; 172. Horizontal cylinder; 18. Horizontal plate; 19. Miniature electric push rod; 20. Arc-shaped clamping plate; 21. Pumping assembly; 211. Water tank; 212. First pump; 22. Metal bend; 23. First S-shaped... Hose, 24 Horizontal shaft, 25 Rotary drum, 26 Fixed pipe, 27 Control valve, 28 Pressure sensor, 29 Moving hose, 30 Conical elastic cover, 31 Water bucket, 32 Second pump, 33 Return water pipe, 34 Circulation pipe, 35 Conical plug, 36 Solenoid valve, 37 Second S-type hose, 38 Return assembly, 381 Gear motor, 382 Support frame, 39 Mounting sleeve, 40 Distance assembly, 401 Fixed block, 402 Sliding cylinder, 41 Toothed plate, 42 Drive tooth, 43 Indicator plate, 44 Scale plate, 45 Air pump, 46 Regulating valve, 47 Buzzer, 48 Magnetic control valve, 49 Through hole. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] like Figures 1-8 As shown, a coal mining machine pump box oil pipe bender includes a mounting frame 1 and an operation panel 2 disposed on the upper side wall of the mounting frame 1. A PLC controller 3 is fixedly connected to the lower side wall of the mounting frame 1. The device also includes:

[0035] A bending assembly 8 is disposed on the upper side wall of the mounting frame 1, and a bending wheel 4 is provided on the surface of the bending assembly 8;

[0036] The fixed conveying assembly 17 is set on the upper side wall of the mounting frame 1. The upper side wall of the mounting frame 1 is driven by the linear motor 5 to move the fixed conveying assembly 17 and the oil pipe 6 to be processed, so as to convey the oil pipe 6 to be processed toward the bending assembly 8.

[0037] The pumping assembly 21 is located below the mounting frame 1 and is fixedly connected to the mounting frame 1 via the placement plate 7. The pumping assembly 21 is connected to the fixed conveying assembly 17 and is also connected to the oil pipe 6 to be processed.

[0038] The return component 38 is located on the rear side of the fixed conveying component 17 and returns each part of the pumping component 21 to its original position.

[0039] The distance component 40 is located behind the fixed conveyor component 17 and marks the location of any problematic bends.

[0040] The bending assembly 8 includes a support platform 81 and two limiting seats 82. The support platform 81 is fixedly connected to the upper side wall of the mounting frame 1. The two limiting seats 82 are symmetrically fixedly connected to the upper side wall of the support platform 81. The upper side wall of the mounting frame 1 has two placement slots, and small electric push rods 9 are fixedly connected in the placement slots. The moving ends of the two small electric push rods 9 are fixedly connected to the same connecting ring 10. The upper side wall of the connecting ring 10 is fixedly connected to a support ring 11. The outer wall of the support ring 11 is rotatably connected to a gear ring 12 through a bearing. The upper side wall of the connecting ring 10 is fixedly connected to an adjusting motor 13. The output end of the adjusting motor 13 is fixedly connected to an adjusting gear 14 that meshes with the gear ring 12. The upper side wall of the gear ring 12 is fixedly connected to a mounting ring 15. The upper side wall of the mounting ring 15 is fixedly connected to a bending plate 16. The bending wheel 4 is rotatably connected to the upper side wall of the bending plate 16. Through this assembly, the oil pipe can be bent into the required shape.

[0041] The fixed conveying assembly 17 includes a movable box 171 and two horizontal cylinders 172. The movable box 171 is fixedly connected to the output end of the linear motor 5. One of the horizontal cylinders 172 is fixedly connected to the right side wall of the movable box 171. The left end of the oil pipe 6 to be processed is inserted into the horizontal cylinder 172 on the surface of the movable box 171, and the right end of the oil pipe 6 to be processed is inserted into the other horizontal cylinder 172. Two horizontal plates 18 are fixedly connected to the side wall of the horizontal cylinder 172. A miniature electric push rod 19 is fixedly connected to the side wall of the horizontal plate 18. An arc-shaped clamping plate 20 is fixedly connected to the moving end of the miniature electric push rod 19. Through this assembly, the oil pipe 6 to be processed can be fixed and the oil pipe 6 to be processed can be conveyed towards the bending assembly 8.

[0042] The pumping assembly 21 includes a water tank 211 and a first pump 212. The water tank 211 is fixedly connected to the upper side wall of the placement plate 7. The water tank 211 has a filter mechanism inside (the filter mechanism is a filter screen plate, and the maintenance of the filter screen plate is a mature existing technology, which does not need to be described in detail). The first pump 212 is fixedly connected to the water tank 211, and the liquid inlet end of the first pump 212 is connected to the side wall of the water tank 211. The liquid outlet end of the first pump 212 is fixedly connected to a metal bend 22. The lower end of the metal bend 22 is fixedly connected to a first S-shaped hose 23. A horizontal shaft 24 is rotatably connected to the rear side wall of the movable box 171. The front end of the horizontal shaft 24 is located inside the movable box 171 and is fixedly connected to a rotating drum 25. The rotating drum 25 has a hollow structure. A fixed tube 26 is rotatably connected to the front side wall of the rotating drum 25. The lower end of the fixed tube 26 extends out of the movable box 171 and is connected to the upper end of the first S-shaped flexible hose 23. The side wall of the mounting bracket 1 has a sliding port that matches the fixed tube 26. A control valve 27 and a pressure sensor 28 are installed inside the fixed tube 26. The pressure sensor 28 is located above the control valve 27. A movable flexible hose 29 is wound around the outer wall of the rotating drum 25. The left end of the movable flexible hose 29 is connected to the rotating drum 25, and the right end of the movable flexible hose 29 passes through the movable box 171 and the side wall of the left horizontal cylinder 172, located inside the left horizontal cylinder 172. The side walls of both the movable box 171 and the left horizontal cylinder 172 have openings for the movable flexible hose. The through holes 49 of the pipes 29 are matched. After the oil pipe 6 to be processed is inserted into the left horizontal cylinder 172, the right end of the moving hose 29 is inserted into the left port of the oil pipe 6 to be processed. The pipe wall of the moving hose 29 located inside the oil pipe 6 is fixedly fitted with a conical elastic cover 30. The left side wall of the moving box 171 is fixedly connected to a water bucket 31. The upper side wall of the water bucket 31 is fixedly connected to a second pump 32. The pressure sensor 28 is electrically connected to the second pump 32 through the PLC controller 3. The liquid outlet of the second pump 32 is connected to the upper side wall of the moving box 171. The water bucket 31 and the lower side wall of the moving box 171 are fixedly connected to the same return water pipe 33 with a magnetic control valve 48. The right horizontal cylinder 172 is located on the right side. A circulation pipe 34 is fixedly connected to the right side wall of the oil pipe 6 to be processed. The left end of the circulation pipe 34 is located inside the right port of the oil pipe 6 to be processed. A conical plug 35 is fixedly sleeved on the pipe wall of the end of the circulation pipe 34 inside the oil pipe 6 to be processed. A solenoid valve 36 is provided at the end of the circulation pipe 34 that extends out of the right side cylinder 172. The circulation pipe 34 is connected to the side wall of the water tank 211 through the second S-shaped hose 37. Through this component, the inside of the oil pipe can be automatically detected after the oil pipe is bent. If the detection finds that the inner lining of the oil pipe is separated from the oil pipe due to the bending speed being too fast or the bending angle being too large, thereby reducing the inner diameter of the bend, the bend can be quickly located, which can help the operator to optimize the design of the bend.

[0043] The repositioning assembly 38 includes a geared motor 381 and a support frame 382. The support frame 382 is connected to the rear side wall of the movable box 171. An mounting sleeve 39 is fixedly connected to the upper side wall of the support frame 382. The geared motor 381 is fixedly connected inside the mounting sleeve 39. The geared motor 381 is connected to the rear end of the horizontal shaft 24 via a safety coupling. The geared motor 381 is a non-brake motor. Through this assembly, after the internal inspection of the oil pipe is completed, the inspection component can be automatically separated from the inside of the oil pipe, which is convenient for the operator to inspect other oil pipes later, thus improving the convenience of the operator.

[0044] The distance assembly 40 includes a fixed block 401 and a sliding cylinder 402. The fixed block 401 is fixedly connected to the rear side wall of the movable box 171 via a bracket. The sliding cylinder 402 is slidably sleeved on the outside of the fixed block 401. A toothed plate 41 is fixedly connected to the lower side wall of the sliding cylinder 402. A drive tooth 42 that meshes with the toothed plate 41 is fixedly sleeved on the rod wall of the horizontal shaft 24. A horizontal opening that matches the bracket is opened on the front side wall of the sliding cylinder 402. An indicator plate 43 is fixedly connected to the upper side wall of the fixed block 401. A scale plate 44 is fixedly connected to the upper side wall of the sliding cylinder 402. The upper end of the scale plate 44 extends out of the sliding cylinder 402. Through this assembly, the movement distance of the right end of the moving hose 29 can be marked.

[0045] An air pump 45 is fixedly connected to the right side wall of the mobile box 171. The air outlet of the air pump 45 is connected to the pipe wall of the fixed pipe 26. An regulating valve 46 is provided inside the air outlet of the air pump 45, which can discharge all the liquid in the oil pipe 6 to be processed.

[0046] A buzzer 47 is fixedly connected to the lower side wall of the mounting bracket 1. The buzzer 47 is electrically connected to the PLC controller 3. When a problem is detected inside the oil pipe 6 to be processed, the PLC controller 3 will control the buzzer 47 to work and remind the operator.

[0047] The operating principle of the present invention is explained as follows: The oil pipe 6 to be processed is placed between the two limiting seats 82, and the left end of the oil pipe 6 to be processed is inserted into the left horizontal cylinder 172, so that the left end of the oil pipe 6 to be processed is in contact with the inside of the left horizontal cylinder 172. At this time, the right end of the moving hose 29 located inside the left horizontal cylinder 172 will be inserted into the left port of the oil pipe 6 to be processed. Then, the right horizontal cylinder 172 is sleeved on the right end of the oil pipe 6 to be processed. Then, the operator sends an electrical signal to the PLC controller 3 through the operation panel 2. After receiving the electrical signal, the PLC controller 3 will control the four micro electric push rods 19 on the left and right sides to work simultaneously. The micro electric push rods 19 will drive the arc-shaped clamping plate 20 to clamp the oil pipe 6 to be processed and fix the oil pipe 6 to be processed.

[0048] Next, the PLC controller 3 will control the first pump 212 to operate. The first pump 212 will transport the liquid in the water tank 211 through the metal bend 22 and the first S-shaped hose 23 to the fixed pipe 26, and then through the fixed pipe 26 to the rotating drum 25. The liquid will then be transported through the rotating drum 25 and the moving hose 29 to the oil pipe 6 to be processed, and then flow back to the water tank 211 through the oil pipe 6 to be processed, the circulation pipe 34, and the second S-shaped hose 37. The PLC controller 3 will detect and record the pressure inside the fixed pipe 26 at this time through the pressure sensor 28, and then the PLC controller 3 will control the solenoid valve 36. When the first pump 212 is still in operation, the pressure inside the oil pipe 6 to be processed and the fixed pipe 26 will continue to increase. When the PLC controller 3 detects through the pressure sensor 28 that the hydraulic pressure inside the fixed pipe 26 has reached the set range, the PLC controller 3 will control the first pump 212 to stop working and simultaneously control the control valve 27 to close, so that the oil pipe 6 to be processed maintains a high pressure. The high pressure liquid can support the inner wall of the oil pipe 6 to be processed to a certain extent, making it less likely to collapse or deform excessively during the bending process. This helps to maintain the shape and dimensional accuracy of the oil pipe 6 to be processed and improve the bending quality.

[0049] Next, the PLC controller 3 controls the linear motor 5 to work. The linear motor 5 drives the moving box 171 and the oil pipe to be processed 6 to move to the right according to the set program. At the same time, the PLC controller 3 controls the adjusting motor 13 to work. The adjusting motor 13 drives the mounting ring 15, bending plate 16 and bending wheel 4 to rotate backward to the set angle through the interaction of adjusting gear 14 and gear ring 12. Figure 3 Since the oil pipe 6 to be processed is located within the two limiting seats 82, the portion of the oil pipe 6 extending beyond the limiting seat 82 on the right end will be bent backward by the bending wheel 4 (the bending wheel 4 is a roller structure, and its side wall has an annular groove that matches the oil pipe 6 to be processed). After a single bend is completed, the adjusting motor 13 will drive the bending wheel 4 forward to the initial position. When the left end of the oil pipe 6 to be processed moves to the right, the subsequent portion of the oil pipe 6 can be bent further (see reference). Figure 2 and Figure 3 The small electric push rod 9 drives the bending wheel 4 downward to a set distance, so that the height of the bending wheel 4 is lower than the height of the oil pipe 6 to be processed. The adjusting motor 13 controls the bending wheel 4 to rotate to the rear side of the oil pipe 6 to be processed. Then, the small electric push rod 9 drives the bending wheel 4 upward to the initial position. The adjusting motor 13 drives the bending wheel 4 to rotate forward, which can bend the oil pipe 6 to be processed forward. When bending the oil pipe 6 to be processed, the right end of the oil pipe 6 to be processed will drive the right horizontal cylinder 172 to move according to the bending angle. The right horizontal cylinder 172 is connected through the circulation pipe 34 and the second S-shaped hose 37, so it will not obstruct the movement of the right end of the oil pipe 6 to be processed.

[0050] After the processing of the oil pipe 6 is completed, the PLC controller 3 will control the solenoid valve 36 and the control valve 27 to open simultaneously, and control the first pump 212 to operate, allowing the liquid to continue flowing in the oil pipe 6. After the first pump 212 has been operating for two seconds, the PLC controller 3 will re-detect the hydraulic pressure inside the fixed pipe 26 through the pressure sensor 28. If the detection finds that the hydraulic pressure is the same as the hydraulic pressure recorded before bending, it indicates that the inner diameter of the oil pipe 6 has not changed due to bending. If the detection finds that the hydraulic pressure is greater than the hydraulic pressure recorded before bending, it indicates that the bending speed is too fast or the bending angle is too large. This causes the inner lining of the oil pipe 6 to separate from the pipe itself, resulting in a smaller inner diameter at the bend and causing a slight blockage. As the liquid flows through the bend, the water pressure on the left side increases. The PLC controller 3 then activates the second pump 32, which pumps water from the bucket 31 to the movable box 171 (which already contains a certain amount of water). As the water in the movable box 171 increases, water and some gas are transported through the through-hole 49 to the left side of the conical elastic cover 30, causing the pressure on the left side of the conical elastic cover 30 to exceed the pressure of the pipe. When the water pressure inside the processing oil pipe 6 is adjusted, the conical elastic cover 30 will cause the right end of the moving hose 29 to move inside the oil pipe 6. After the right end of the moving hose 29 passes the problematic bend, following the same principle, the water pressure inside the fixed pipe 26 and the moving hose 29 will quickly decrease to the level before the bend. When the PLC controller 3 detects this change, it will control the second pump 32 to stop working, keeping the right end of the moving hose 29 stationary. Then, the PLC controller 3 will activate the buzzer 47 to alert the operator that a problem has occurred inside the oil pipe 6 and needs to be addressed. The angle and force of the bend in the oil pipe 6 were redesigned. When the moving hose 29 moves, it will drive the rotating drum 25 to rotate. The rotating drum 25 drives the drive gear 42 to rotate through the horizontal shaft 24. Through the meshing of the drive gear 42 and the tooth plate 41, the sliding cylinder 402 is moved to the right. The indicator plate 43 is fixed in place by the fixed block 401. Through the cooperation of the indicator plate 43 and the scale plate 44, the operator can be assisted in judging the moving distance of the moving hose 29 in the oil pipe 6 to be processed, so as to quickly find the problematic bend and provide assistance to the operator in optimizing the design of the bend.

[0051] Once the operator locates the problematic bend, they can send an electrical signal to the PLC controller 3 via the control panel 2. Upon receiving this signal, the PLC controller 3 will control the magnetic valve 48 to open and control the geared motor 381 to drive the horizontal shaft 24 and the rotating drum 25 to rotate in opposite directions for one minute. The rotating drum 25 will wrap the left end of the moving hose 29 around the surface, thereby pulling the right end of the moving hose 29 out of the inside of the oil pipe 6 to be processed. During the recovery process, the moving hose 29 can push all the water on the left side back into the moving box 171 through the conical elastic cover 30. Some of the water will flow back into the water bucket 31 through the return water pipe 33. When the moving hose 29 and the conical elastic cover 30 are in reverse rotation, the water will be pulled out of the oil pipe 6 to be processed. After the elastic cover 30 returns to its initial position, the conical elastic cover 30 and the inner wall of the left horizontal cylinder 172 will come into contact, causing the moving hose 29, the rotating drum 25 and the horizontal shaft 24 to stop rotating. Under the action of the safety coupling, the geared motor 381 will run idle. After the geared motor 381 works for one minute, it will stop working. While the geared motor 381 is working, the PLC controller 3 will also control the air pump 45 and the regulating valve 46 to work for the set time. The air pump 45 delivers external gas to the oil pipe 6 to be processed, so that all the remaining liquid in the oil pipe 6 to be processed is discharged into the water tank 211 for storage. After the geared motor 381 stops working, the operator can remove the bent oil pipe 6 to be processed.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal mining machine pump box oil pipe bender, comprising a mounting frame (1) and an operation panel (2) disposed on the upper side wall of the mounting frame (1), wherein a PLC controller (3) is fixedly connected to the lower side wall of the mounting frame (1), characterized in that, Also includes: A bending assembly (8) is provided on the upper side wall of the mounting bracket (1), and a bending wheel (4) is provided on the surface of the bending assembly (8). A fixed conveying assembly (17) is set on the upper side wall of the mounting frame (1). The upper side wall of the mounting frame (1) is driven by a linear motor (5) to move the fixed conveying assembly (17) and the oil pipe (6) to be processed, and to convey the oil pipe (6) to be processed toward the bending assembly (8). The pumping assembly (21) is located below the mounting bracket (1) and is fixedly connected to the mounting bracket (1) via a placement plate (7). The pumping assembly (21) is connected to the fixed conveying assembly (17) and communicates with the oil pipe (6) to be processed. The positioning component (38) is located on the rear side of the fixed conveying component (17) and positions each part of the pumping component (21). A distance component (40) is located behind the fixed conveying component (17) to mark the location of problematic bends. The fixed conveying component (17) includes a moving box (171) and two horizontal cylinders (172). The moving box (171) is fixedly connected to the output end of a linear motor (5). One of the horizontal cylinders (172) is fixedly connected to the right side wall of the moving box (171). The left end of the oil pipe (6) to be processed is inserted into the horizontal cylinder (172) on the surface of the moving box (171), and the right end of the oil pipe (6) to be processed is inserted into the other horizontal cylinder (172). Two horizontal plates (18) are fixedly connected to the side wall of the horizontal cylinder (172), and a micro electric motor is fixedly connected to the side wall of the horizontal plate (18). The push rod (19) has an arc-shaped clamping plate (20) fixedly connected to its moving end. The pumping assembly (21) includes a water tank (211) and a first pump (212). The water tank (211) is fixedly connected to the upper side wall of the placement plate (7). The water tank (211) has a filter mechanism inside. The first pump (212) is fixedly connected to the water tank (211), and the inlet end of the first pump (212) is connected to the side wall of the water tank (211). The outlet end of the first pump (212) is fixedly connected to a metal bend (22). The lower end of the metal bend (22) is fixedly connected to a first S-shaped hose (23). The rear side wall of the moving box (171) is rotatably connected to a horizontal shaft (2). 4) The front end of the horizontal shaft (24) is located inside the movable box (171) and is fixedly connected to a rotating cylinder (25). The rotating cylinder (25) is a hollow structure. The front side wall of the rotating cylinder (25) is rotatably connected to a fixed pipe (26). The lower end of the fixed pipe (26) extends out of the movable box (171) and is connected to the upper end of the first S-shaped hose (23). The side wall of the mounting bracket (1) is provided with a sliding port that matches the fixed pipe (26). The fixed pipe (26) is provided with a control valve (27) and a pressure sensor (28). The pressure sensor (28) is located above the control valve (27). The outer wall of the rotating cylinder (25) is wrapped with a movable hose (29). The left end of the movable hose (29) and the rotating cylinder (24) are connected to the rotating cylinder (25). 5) Connecting, the right end of the mobile hose (29) passes through the side wall of the mobile box (171) and the left horizontal cylinder (172) and is located inside the left horizontal cylinder (172). The side walls of the mobile box (171) and the left horizontal cylinder (172) are provided with through holes (49) that match the mobile hose (29). After the oil pipe (6) to be processed is inserted into the left horizontal cylinder (172), the right end of the mobile hose (29) is inserted into the left port of the oil pipe (6) to be processed. The pipe wall of the mobile hose (29) located inside the oil pipe (6) to be processed is fixedly fitted with a conical elastic cover (30). The left side wall of the mobile box (171) is fixedly connected to a water bucket (31). The upper side wall of the water bucket (31) is fixedly connected to a second pump (32).The pressure sensor (28) is electrically connected to the PLC controller (3) and the second pump (32). The outlet of the second pump (32) is connected to the upper side wall of the moving box (171). The water tank (31) and the lower side wall of the moving box (171) are fixedly connected to the same return water pipe (33) with a magnetic control valve (48). A circulation pipe (34) is fixedly connected to the right side wall of the horizontal cylinder (172) on the right side. The left end of the circulation pipe (34) is located inside the right port of the oil pipe (6) to be processed. 34) A conical plug (35) is fixedly fitted onto the wall of one end of the oil pipe (6) to be processed. A solenoid valve (36) is provided at the end of the circulation pipe (34) extending out of the right horizontal cylinder (172). The circulation pipe (34) is connected to the side wall of the water tank (211) through a second S-shaped hose (37). An air pump (45) is fixedly connected to the right side wall of the movable box (171). The air outlet of the air pump (45) is connected to the wall of the fixed pipe (26). A regulating valve (46) is provided inside the air outlet of the air pump (45).

2. The oil pipe bender for a coal mining machine pump box according to claim 1, characterized in that, The bending assembly (8) includes a support platform (81) and two limiting seats (82). The support platform (81) is fixedly connected to the upper side wall of the mounting frame (1). The two limiting seats (82) are symmetrically fixedly connected to the upper side wall of the support platform (81). The upper side wall of the mounting frame (1) has two placement slots, and small electric push rods (9) are fixedly connected in the placement slots. The moving ends of the two small electric push rods (9) are fixedly connected to the same connecting ring (10). The upper side wall of the connecting ring (10) is fixedly connected to... A support ring (11) is rotatably connected to a gear ring (12) via a bearing on its outer wall. An adjustment motor (13) is fixedly connected to the upper side wall of the connecting ring (10). An adjustment gear (14) that meshes with the gear ring (12) is fixedly connected to the output end of the adjustment motor (13). An installation ring (15) is fixedly connected to the upper side wall of the gear ring (12). A bending plate (16) is fixedly connected to the upper side wall of the installation ring (15). The bending wheel (4) and the upper side wall of the bending plate (16) are rotatably connected.

3. The oil pipe bender for a coal mining machine pump box according to claim 1, characterized in that, The repositioning component (38) includes a geared motor (381) and a support frame (382). The support frame (382) is connected to the rear side wall of the movable box (171). An mounting sleeve (39) is fixedly connected to the upper side wall of the support frame (382). The geared motor (381) is fixedly connected inside the mounting sleeve (39). The geared motor (381) is connected to the rear end of the horizontal shaft (24) via a safety coupling. The geared motor (381) is a non-brake motor.

4. The oil pipe bender for a coal mining machine pump box according to claim 1, characterized in that, The distance component (40) includes a fixed block (401) and a sliding cylinder (402). The fixed block (401) is fixedly connected to the rear side wall of the bracket and the movable box (171). The sliding cylinder (402) is slidably sleeved on the outside of the fixed block (401). A toothed plate (41) is fixedly connected to the lower side wall of the sliding cylinder (402). A drive tooth (42) that meshes with the toothed plate (41) is fixedly sleeved on the rod wall of the horizontal shaft (24). A horizontal opening that matches the bracket is opened on the front side wall of the sliding cylinder (402). An indicator plate (43) is fixedly connected to the upper side wall of the fixed block (401). A scale plate (44) is fixedly connected to the upper side wall of the sliding cylinder (402).

5. A coal mining machine pump box oil pipe bender according to claim 1, characterized in that, A buzzer (47) is fixedly connected to the lower side wall of the mounting bracket (1), and the buzzer (47) is electrically connected to the PLC controller (3).

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