A mobile impact type large pin shaft replacement device and method

Abstract

The present invention discloses a mobile impact type large pin replacement device and method, and its technical solution is as follows: It includes an impact device body, a fine-tuning mechanism, an adjustment mechanism, and a mobile support assembly. The impact device body includes an impact drill rod and an impact moving mechanism, and the impact moving mechanism can provide reciprocating power for the impact drill rod; the fine-tuning mechanism includes a pulley in contact with the bottom of the impact drill rod, and the pulley is connected to the impact moving mechanism through a connecting bracket; the adjustment mechanism is located below the impact drill rod and includes a lead screw rotatably connected to the impact moving mechanism, and a manual wrench is installed on the lead screw; the mobile support assembly is used to support the impact device body and is installed at the bottom of the impact moving mechanism. The present invention can improve the safety of maintenance operations, improve work efficiency, and enhance resource utilization rate.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment maintenance, and in particular to a mobile impact-type large pin replacement device and method. Background Art

[0002] The draw pin is a key component connecting the dump truck's rear axle to the chassis. It bears the tensile force and impact of heavy cargo. Typically, the pin has a diameter of 140 mm, a length of 500 mm, and weighs approximately 45 kg, making it quite heavy. Routine vehicle troubleshooting often involves problems such as a broken draw bearing, cracked draw seat, broken draw bearing plate bolts, and worn draw pins. In these cases, the draw pin typically needs to be replaced or removed for repair. The traditional method for routine inspection and removal of the draw pin involves using an overhead crane to hoist the truck bed from the rear. The gap between the draw pin and the chassis draw seat lug is adjusted. A sling is attached to the forklift forks, and a hammer (a long, heavy, solid iron rod) is suspended from the sling. Four or five people then use the hammer to strike the pin. With the coordination of the overhead crane and forklift, it takes approximately four to six hours to complete the inspection of the draw pin and other components.

[0003] The inventors have found that the above-mentioned traditional methods have the following problems: 1) There are great safety hazards in the operation, the impact position of the suspended hammer is inaccurate, and the impact force is unstable, which can easily cause personal injury accidents; 2) The maintenance work is very time-consuming and inefficient, which seriously affects the daily production work arrangement. There are many uncontrollable factors in the maintenance time. If the pin is worn and the shoulder and the traction bearing are stuck, the impact force of the swing hammer is too small to knock out the pin. The pin can only be cut into sections with a high-temperature gas cutting tool to knock the pin out in sections. 3) Since this type of fault takes a long time to repair, it occupies the maintenance site and common maintenance resources (overhead crane, forklift, etc.) for a long time, occupies maintenance human resources, space resources, equipment resources, etc., which is not conducive to daily production maintenance, etc. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a mobile impact-type large-scale pin replacement device and method, which can improve the safety of maintenance operations, improve work efficiency, and enhance resource utilization.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides a mobile impact-type large pin replacement device, comprising:

[0007] The impact device body includes an impact drill rod and an impact moving mechanism, and the impact moving mechanism can provide cyclic reciprocating power for the impact drill rod;

[0008] The fine adjustment mechanism includes a pulley in contact with the bottom of the impact drill rod, and the pulley is connected to the impact movement mechanism through a connecting bracket;

[0009] The adjusting mechanism is located below the impact drill rod and includes a lead screw rotatably connected to the impact moving mechanism, and a manual lever is installed on the lead screw.

[0010] The moving support assembly is used to support the impact device body and is installed at the bottom of the impact moving mechanism.

[0011] As a further implementation manner, the impact moving mechanism includes a frame body and a moving main body installed inside the frame body. The impact drill rod is connected to the moving main body, and the axis of the impact drill rod is horizontally arranged.

[0012] As a further implementation manner, the pulley is connected to the connecting bracket through a pulley mounting plate, and the connecting bracket is detachably connected to the impact moving mechanism.

[0013] As a further implementation manner, the connecting bracket is composed of two connecting plates. One end of the two connecting plates forms a first opening, and the other end forms a second opening; the size of the first opening is larger than the size of the second opening.

[0014] As a further implementation manner, the moving support assembly includes a support frame and a cart. The support frame is installed at one end of the bottom of the impact device body, and the other end of the bottom of the impact device body is detachably connected to the cart.

[0015] As a further implementation manner, one end of the lead screw is rotatably connected to the support frame through a pull rod, and the other end is rotatably connected to the impact moving mechanism through a rotating sleeve; the angle of the support frame can be changed by rotating the manual lever.

[0016] As a further implementation manner, a second roller is installed at the bottom of the support frame.

[0017] As a further implementation manner, the cart includes a support plate, a first roller installed at the bottom of the support plate, and an adjustment support member.

[0018] As a further implementation manner, a hydraulic power source is arranged above the support plate, and a shock-absorbing rubber pad is installed at the bottom of the hydraulic power source.

[0019] In a second aspect, an embodiment of the present invention further provides a method for replacing a large pin of a mobile impact type. By using the replacement device, under the action of a hydraulic drive source, the impact moving mechanism outputs cyclic impact force, the impact moving mechanism transmits the impact force to the impact drill rod, and the impact drill rod adjusts the working position through a fine adjustment mechanism to complete the action of impacting the traction pin.

[0020] The beneficial effects of the above embodiments of the present invention are as follows:

[0021] (1) The percussion drill rod of one or more embodiments of the present invention reciprocates under the action of a percussion moving mechanism to achieve percussion on the traction pin, with high percussion efficiency, stable impact force, and an impact speed more than 10 times that of the original manual hammering method, saving more maintenance time and improving the usage efficiency of the vehicle.

[0022] (2) One or more embodiments of the present invention are provided with a fine-tuning mechanism, which has accurate percussion positions and can be adjusted according to actual needs; it is easy to operate and control.

[0023] (3) One or more embodiments of the present invention save manpower, are safe to operate, greatly reduce the originally unpredictable operation risks; and save maintenance space resources and equipment resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0025] Figure 1 is a schematic structural diagram of the present invention according to one or more embodiments;

[0026] Figure 2 is a schematic structural diagram of the hydraulic power source of the present invention according to one or more embodiments;

[0027] Figure 3 is a schematic diagram of the percussion drill rod and the fine-tuning mechanism of the present invention according to one or more embodiments;

[0028] Figure 4 is a partial structural diagram of the fine-tuning mechanism of the present invention according to one or more embodiments;

[0029] Figure 5 is a schematic structural diagram of the adjusting mechanism of the present invention according to one or more embodiments;

[0030] Figure 6 is a schematic structural diagram of the adjustment support part of the present invention according to one or more embodiments;

[0031] Among them, 1. Hydraulic power source, 2. Percussion drill rod, 3. Adjusting mechanism, 4. Fine-tuning mechanism, 5. Percussion moving mechanism, 6. Adjustment support, 7. Electric control box, 8. Support plate, 9. First roller, 10. Second roller, 11. Support frame, 12. Connection bracket, 13. Pulley, 14. Through pin, 15. Pulley mounting plate, 16. Screw rod, 17. Manual lever, 18. Pull rod, 19. Rotating sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Example 1:

[0033] This embodiment provides a mobile impact type large pin replacement device, where the large pin refers to the traction pin connecting the rear axle of the dump truck and the girder; as Figure 1 shown, the replacement device includes an impact device body, an adjustment mechanism 3, a fine adjustment mechanism 4, a mobile support assembly, a hydraulic power source 1, and an electrical control box 7. The mobile support assembly is installed at the bottom of the impact device body, the adjustment mechanism 3 is connected below the impact device body, and the fine adjustment mechanism 4 is installed at one end of the impact device body.

[0034] An electrical control box 7 is installed on one side of the impact device body, and the impact device body is connected to the hydraulic power source 1 through a pipeline. The electrical control box 7 mainly includes electronic components such as a relay, a current controller, an alarm lamp, and an emergency stop button, which is a conventional structure and will not be elaborated here.

[0035] Furthermore, the mobile support assembly includes a support frame 11 and a trolley. The support frame 11 is installed at one end of the bottom of the impact device body, and the other end of the bottom of the impact device body is detachably connected to the trolley. The hydraulic power source 1 is arranged on the trolley, and the reciprocating impact action is remotely controlled by controlling the solenoid valve through a small electrical control box and a remote controller of the hydraulic power source 1.

[0036] In this embodiment, the top of the support frame 11 is rotatably connected to the impact device body, and it has a triangular support frame structure, and a second roller 10 is installed at the bottom.

[0037] The trolley includes a support plate 8, an adjustment support member 6, a first roller 9, and a push handle. Both the hydraulic power source 1 and the impact device body are installed on the upper surface of the support plate 8. As Figure 2 shown, a shock-absorbing rubber pad is installed at the bottom of the hydraulic power source 1 to reduce vibration.

[0038] In this embodiment, there are two adjustment support members 6 and one first roller 9. The two adjustment support members 6 are installed at one end of the bottom of the support plate 8, and the first roller 9 is installed at the other end of the bottom of the support plate 8; the first roller 9 and the two adjustment support members 6 form a triangular structure.

[0039] Preferably, as Figure 6 shown, the adjustment support member 6 is a high-strength anchor bolt, and the high-strength anchor bolt is threadedly connected to the support plate 8. The support height is adjusted by thread rotation, which can ensure that the entire mechanism avoids sagging or generating additional vibration due to a large span during normal operation. It can be understood that in other embodiments, the number of the first roller 9 and the adjustment support member 6 can also be other numbers.

[0040] Furthermore, the impact device body includes an impact drill rod 2 and an impact moving mechanism 5. The impact drill rod 2 is connected to the impact moving mechanism 5, and the impact moving mechanism 5 drives the impact drill rod 2 to reciprocate. The impact drill rod 2 transmits the cyclic impact force of the power source to the pin to be replaced. The impact moving mechanism 5 is connected to the electrical control box 7, and the start and stop of the impact moving mechanism 5 are controlled by the electrical control box 7.

[0041] Furthermore, the impact moving mechanism 5 includes a frame body and a moving body installed inside the frame body; in this embodiment, the frame body is in an inverted L shape, and the bottom of the frame body is connected to a support plate 8. The impact drill rod 2 is connected to the moving body, and the axis of the impact drill rod 2 is horizontally arranged. In this embodiment, the moving body uses a hydraulic breaker hammer head, and the impact drill rod 2 generates an impact force by supplying hydraulic oil to the hydraulic breaker hammer head.

[0042] Preferably, for a traction pin with a diameter of φ140, the diameter of the impact drill rod 2 is φ53, which can achieve the best impact effect.

[0043] As Figure 3 and Figure 4 shown, the fine-tuning mechanism 4 is connected to the frame body and is located below the impact drill rod 2. Further, the fine-tuning mechanism 4 includes a connecting bracket 12, a pulley mounting plate 15 and a pulley 13; the connecting bracket 12 is composed of two connecting plates, the connecting plates are special-shaped plates, one end of the two connecting plates forms a first opening for connecting the frame body, and the other end forms a second opening for connecting the pulley 13; wherein, the size of the first opening is larger than the size of the second opening.

[0044] Further, the connecting plate includes a first section, a second section and a third section connected together. The second section is an inclined section, and the first section and the third section are parallel to each other. The first section is detachably connected to the frame body, for example, by bolt connection. The pulley 13 is connected to the third section of the connecting plate through the pulley mounting plate 15.

[0045] Furthermore, there are two pulley mounting plates 15. The pulley 13 is rotatably connected between the two pulley mounting plates 15. The pulley mounting plate 15 is connected to the connecting plate through a through pin 14; the pulley 13 contacts the impact drill rod 2 and plays a guiding and supporting role for the impact drill rod 2. By adjusting the inclination angle of the pulley mounting plate 15, it is ensured that the impact drill rod 2 maintains the correct free floating position, avoiding wear of the impact body shaft hole during the operation of the device and affecting the maintenance and replacement operation.

[0046] As Figure 5As shown in the figure, the adjusting mechanism 3 includes a lead screw 16 and a manual lever 17. The manual lever 17 is installed along the axial direction of the lead screw 16. One end of the lead screw 16 is connected to the support frame 11 through a pull rod 18, and the other end is connected to the frame body through a rotating sleeve 19. The impact position is initially set through the adjusting mechanism 3, making the replacement device more adaptable to complex working environments.

[0047] Furthermore, one end of the pull rod 18 is hinged to the support frame 11, and a threaded hole is provided at the other end. The lead screw 16 passes through the threaded hole of the pull rod 18; the end of the lead screw 16 forms a hinged structure with the frame body through a rotating sleeve 19. Due to the difference in the position of the pin shaft, by rotating the manual lever 17, the lead screw 16 rotates. Under the action of the threaded hole, the pull rod 18 pulls the support frame 11, realizing the adjustment of the angle of the support frame 11, and thus realizing the positioning of the impact position.

[0048] This embodiment utilizes the advantages of stable and efficient hydraulic transmission. Through the control of the solenoid valve, a large pressure acts on the pin shaft in a cyclic manner, thereby achieving the purpose of mechanical automation operation, converting manual hammering into the impact of the impact component, making the work safer, easier to operate, and more labor-saving.

[0049] Embodiment 2:

[0050] This embodiment provides a method for replacing large pin shafts by mobile impact. Using the replacement device described in Embodiment 1, the motor is rotated through a remote controller to drive the pump station to output hydraulic power. The power is distributed by controlling the solenoid valve, and a cyclic impact force is output by the impact moving mechanism 5. The impact moving mechanism 5 transmits the impact force to the impact drill rod 2. After the accurate adjustment of the working position of the impact drill rod 2, the impact traction pin is impacted, thereby realizing the installation or disassembly operation.

[0051] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mobile impact type large pin replacement device, characterized in that: include: The impact device body includes an impact drill rod and an impact moving mechanism, and the impact moving mechanism can provide cyclic reciprocating power for the impact drill rod; The fine adjustment mechanism includes a pulley in contact with the bottom of the impact drill rod, and the pulley is connected to the impact movement mechanism through a connecting bracket; An adjustment mechanism is located below the impact drill rod and includes a lead screw rotatably connected to the impact movement mechanism, and a manual lever is mounted on the lead screw; A mobile support assembly, used to support the impact device body, which is installed at the bottom of the impact moving mechanism; The pulley is connected to the connecting bracket through the pulley mounting plate, and the connecting bracket and the impact moving mechanism are detachable The pulley is in contact with the impact drill rod and plays a guiding and supporting role for the impact drill rod; by adjusting the inclination angle of the pulley mounting plate, the impact drill rod is ensured to maintain the correct free floating position; The mobile support assembly includes a support frame and a trolley. The support frame is installed at one end of the bottom of the impact device body, the other end of the bottom of the impact device body is detachably connected to the trolley, and the top of the support frame is rotatably connected to the impact device body; one end of the screw is rotatably connected to the support frame through a pull rod, and the other end is rotatably connected to the impact moving mechanism through a rotating sleeve; the angle of the support frame can be changed by rotating the manual lever, one end of the pull rod is hinged to the support frame, and the other end is provided with a threaded hole, and the screw passes through the threaded hole of the pull rod.

2. A mobile impact type large pin replacement device according to claim 1, characterized in that: The impact moving mechanism comprises a frame and a moving body installed inside the frame. The impact drill rod is connected to the moving body, and the axis of the impact drill rod is horizontally arranged.

3. The mobile impact type large pin replacement device according to claim 1, characterized in that: The connecting bracket is composed of two connecting plates, one end of the two connecting plates forms a first opening, and the other end forms a second opening; the size of the first opening is larger than the size of the second opening.

4. The mobile impact type large pin replacement device according to claim 1, characterized in that: A second roller is installed at the bottom of the support frame.

5. The mobile impact type large pin replacement device according to claim 1, characterized in that: The cart includes a support plate, a first roller installed at the bottom of the support plate, and an adjustment support member.

6. The mobile impact type large pin replacement device according to claim 5, characterized in that: A hydraulic power source is arranged above the support plate, and a shock-absorbing rubber pad is installed at the bottom of the hydraulic power source.

7. A mobile impact type large pin replacement method, characterized in that: Using the replacement device as described in any one of claims 1-6, under the action of the hydraulic drive source, the impact moving mechanism outputs a cyclic impact force, the impact moving mechanism transmits the impact force to the impact drill rod, and the impact drill rod adjusts the working position through the fine-tuning mechanism to complete the action of impacting the traction pin.

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