Self-adaptive pin shaft dismounting and mounting device and control method

Abstract

The invention belongs to the technical field of engineering instruments, and particularly relates to a self-adaptive pin shaft dismounting and mounting device and a control method. The self-adaptive pin shaft dismounting and mounting device comprises a working oil cylinder, the working oil cylinder comprises an oil cylinder barrel and a piston rod, a multi-claw connecting sleeve is arranged at the front end of the oil cylinder barrel, and a hanging ring is arranged on the outer side of the oil cylinder barrel; and a screw rod can be mounted at the front end of the piston rod. Compared with the prior art, the device has the advantages of intelligent control, accurate control of the mounting / shaft taking distance, good safety performance and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering machinery, and in particular relates to an adaptive disassembly and assembly pin device and a control method. Background Art

[0002] Shafts are common connectors in engineering machinery and equipment. They need to be disassembled and assembled when replacing or repairing the structural parts connected to them. However, in actual applications, many of them are installed at higher positions on the equipment, which makes disassembly and assembly inconvenient and poses a safety hazard.

[0003] The prior art generally uses a shaft puller to disassemble and assemble the shaft, but this method has certain limitations. First, when the shaft is pulled out from a high place, due to the effect of gravity, a large impact force may be generated, causing the shaft to fly out of the air, posing a threat to surrounding personnel and equipment. Second, if the shaft does not have appropriate support and protection measures, it is easy to cause damage.

[0004] In view of the above, the present invention provides an adaptive shaft extraction solution, which can accurately control the installation and extraction distance, and can safely and conveniently remove or install the shaft in place with the assistance of manual operation. Summary of the invention

[0005] In order to solve the above problems, the invention provides an adaptive disassembly and assembly pin device and a control method to solve the above problems. The specific technical solution is as follows: An adaptive disassembly and assembly pin device comprises a working cylinder, wherein the working cylinder comprises a cylinder barrel and a piston rod, a multi-claw connecting sleeve is arranged at the front end of the cylinder barrel, and a lifting ring is arranged at the outer side of the cylinder barrel; a screw rod can be installed at the front end of the piston rod.

[0006] Furthermore, a display and control unit is provided for controlling the movement of the oil cylinder.

[0007] Furthermore, a cylinder position sensor for monitoring the displacement of the piston rod is provided at the tail end of the cylinder barrel.

[0008] Furthermore, the multi-claw connecting sleeve is a three-claw connecting sleeve or a two-claw connecting sleeve.

[0009] Furthermore, the multi-claw connecting sleeve includes a plurality of claws and a connecting sleeve, the claws are pivotally connected to the connecting sleeve, and a claw anti-drop spring is provided between the claws and the connecting sleeve.

[0010] Furthermore, one end of the claw anti-drop spring is fixed on the connecting sleeve, and the other end is adjustably set at a fixed position on the claw.

[0011] A control method for an adaptive disassembly and assembly pin device comprises the following steps: Use a sling to lift the entire device through the lifting ring; Select a three-claw connecting sleeve or a two-claw connecting sleeve according to the usage scenario, open its claws and place it on the other side of the flange plate where the shaft hole of the disassembly and assembly device is located; Connect the external oil source and power supply, use a screw to connect the piston rod of the working cylinder and the shaft to be operated, turn on the power, operate the working cylinder on the display and control unit to extend or retract until the claws are tightened, make the disassembly and assembly device coaxial with the shaft to be operated, and then set the extension or retraction distance of the working cylinder according to the installation depth of the shaft; Click the start button on the display and control unit, and the system will work according to the preset program until the displacement sensor moves a distance equal to the set distance of the display and control unit and automatically stops. Manual operation is then used to safely remove or accurately install the shaft.

[0012] Compared with the prior art, the invention has the following beneficial effects: 1. Intelligent control, convenient and safe removal of the shaft; 2. Accurately control the installation / shaft removal distance; 3. Save time and effort; 4. Protect construction workers; 5. Protect the removed shaft for easy reuse; 6. A variety of connection sets, flexible to use, suitable for more scenarios; 7. The gripping claws are tightened to prevent them from loosening suddenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the adaptive disassembly and assembly pin device; Figure 2 It is a three-dimensional structural schematic diagram of the adaptive disassembly and assembly pin device being replaced with a two-claw connecting sleeve; Figure 3 It is a schematic diagram of a scheme in which the height position of the anti-dropping spring of the claw on the adaptive disassembly and assembly pin device is adjustable; Figure 4 It is the principle diagram of the control system of the present invention; Description of the drawings: display and control unit 1, working cylinder 2, cylinder barrel 21, piston rod 22, cylinder position sensor 3, balance valve 4, electric proportional reversing valve 5, lifting ring 6, claw 7, screw 8, three-claw connecting sleeve 9, two-claw connecting sleeve 10, claw anti-drop spring 11. DETAILED DESCRIPTION

[0014] The invention will now be further described with reference to the accompanying drawings.

[0015] The present invention is further described below in conjunction with specific embodiments.

[0016] Reference Figure 1-Figure 4 As shown, an adaptive disassembly and assembly pin device and method include: Display and control unit 1: Display and control unit 1 is an integrated display and control touch screen, used to set device operating parameters and control the start and stop of the equipment.

[0017] Working cylinder 2; Working cylinder 2 is an actuator for removing or installing a shaft, which includes a cylinder barrel 21 and a piston rod 22. A multi-claw connecting sleeve is installed at its front end according to the usage scenario, which includes a connecting sleeve fixed on the cylinder barrel 21 and a plurality of claws 7 pivoted on the connecting sleeve. The multi-claw connecting sleeve is a three-claw connecting sleeve 9 or a two-claw connecting sleeve 10, which is used to hook on the flange plate where the shaft hole is located to fix the entire device, provide stable support, and realize positioning at the same time, so that the piston rod 22 is coaxial with the shaft; there is a lifting ring 6 on the outside, which is used to lift the entire device to prevent it from falling suddenly when removing the shaft; a cylinder position sensor 3 is installed at the tail to monitor the position of the piston rod 22 in real time to ensure the disassembly and assembly accuracy of the shaft. When installing the shaft, the piston rod 22 extends out and pushes the shaft into the shaft hole against the plane of the piston rod 22; when removing the shaft, a screw 8 is installed in the screw hole of the piston rod 22, and the other end of the screw 8 is connected to the shaft to be removed, and the piston rod 22 contracts to pull the shaft out of the shaft hole.

[0018] Balance valve 4; used to make the working cylinder 2 move smoothly.

[0019] The electric proportional reversing valve 5 switches the oil supply of the working cylinder 2 so that the working cylinder 2 can switch between extension and contraction, and controls the flow rate of the oil supply to control the movement speed of the working cylinder 2.

[0020] The claw anti-detachment spring 11 has one end fixed on the connecting sleeve of the multi-claw connecting sleeve, and the other end fixed on the claw 7. When in use, the claw anti-detachment spring 11 is opened to use its elastic force to hold the claw 7 tightly on the flange plate to prevent the disassembly device claw 7 from suddenly loosening. In one embodiment, one end of the claw anti-detachment spring 11 is fixed on the connecting sleeve, and the other end is adjustable at a fixed position on the claw 7, so that the clamping force of the claw 7 can be adjusted to increase the flexibility and safety of the device. For details, please refer to Figure 3 , which shows a solution for adjusting the fixed position of the claw anti-dropping spring 11 on the claw 7 by using different hole positions.

[0021] Working principle: Use a sling to lift the entire assembly device through the lifting ring 6, then select a three-claw connecting sleeve 9 or a two-claw connecting sleeve 10 according to the usage scenario, place the claw 7 to the other side of the flange plate where the disassembly and assembly device is located relative to the shaft hole, connect the electric proportional reversing valve 5 to the external oil source and power supply, use the screw 8 to connect the piston rod 22 of the working cylinder 2 and the shaft to be operated, turn on the power, operate the working cylinder 2 on the display and control unit 1 to extend or retract until the claw 7 is tightened, so that the disassembly and assembly device is coaxial with the shaft to be operated, set the extension or retraction distance of the working cylinder 2 according to the installation depth of the shaft, the distance should be slightly smaller than the installation depth of the shaft for safe removal or accurate installation, and then set the output of the display and control unit 1 to extension or retraction; click the start button of the display and control unit 1, and the system will work according to the preset program until the cylinder position sensor 3 monitors that the moving distance is equal to the set distance of the display and control unit 1 and automatically stops, and then manually operate to safely remove or accurately install the shaft.

[0022] The technical principles of the invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the invention and cannot be interpreted in any way as limiting the scope of protection of the invention. Based on the explanations here, those skilled in the art can think of other specific implementation methods of the invention without creative work, and these methods will fall within the scope of protection of the invention claims.

Claims

1. An adaptive disassembly and assembly pin device, characterized in that: The working cylinder (2) comprises a cylinder barrel (21) and a piston rod (22). A multi-claw connecting sleeve is provided at the front end of the cylinder barrel (21), and a lifting ring (6) is provided at the outer side of the cylinder barrel (21). A screw rod (8) can be installed at the front end of the piston rod (22).

2. The self-adaptive disassembly and assembly pin device according to claim 1, characterized in that: A display and control unit (1) is provided for controlling the movement of the oil cylinder.

3. The self-adaptive disassembly and assembly pin device according to claim 2, characterized in that: A cylinder position sensor (3) for monitoring the displacement of the piston rod (22) is provided at the rear end of the cylinder barrel (21).

4. The self-adaptive disassembly and assembly pin device according to claim 3, characterized in that: The multi-claw connecting sleeve is a three-claw connecting sleeve (9) or a two-claw connecting sleeve (10).

5. The self-adaptive disassembly and assembly pin device according to claim 1, characterized in that: The multi-claw connecting sleeve comprises a plurality of claws (7) and a connecting sleeve, the claws (7) are pivotally connected to the connecting sleeve, and a claw anti-drop spring (11) is provided between the claws (7) and the connecting sleeve.

6. The self-adaptive disassembly and assembly pin device according to claim 5, characterized in that: One end of the claw anti-drop spring (11) is fixed to the connecting sleeve, and the other end is adjustably arranged at a fixed position on the claw (7).

7. A control method for the adaptive disassembly and assembly pin device according to claim 4 or 6, characterized in that: The steps include: Use a lifting device to lift the entire device via the lifting ring (6); Select a three-claw connecting sleeve (9) or a two-claw connecting sleeve (10) according to the usage scenario, open its claws (7) and place it on the other side of the flange plate where the shaft hole of the disassembly and assembly device is located; Connect an external oil source and power supply, use a screw rod (8) to connect the piston rod (22) of the working cylinder (2) and the shaft to be operated, turn on the power, operate the working cylinder (2) on the display and control unit (1) to extend or retract until the claws (7) are tightened, so that the disassembly and assembly device is coaxial with the shaft to be operated, and then set the extension or retraction distance of the working cylinder (2) according to the installation depth of the shaft; Click the start button of the display and control unit (1), and the system will work according to the preset program until the displacement sensor moves a distance equal to the set distance of the display and control unit (1), and then automatically stop. Then, with the assistance of manual operation, the shaft can be safely removed or accurately installed.

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