Maintenance oil cylinder piston rod clamping device

Abstract

The utility model discloses a maintenance oil cylinder piston rod clamping device which comprises two arc-shaped plates, the two arc-shaped plates jointly clamp a piston rod, a protective sleeve is arranged between the arc-shaped plates and the piston rod, and a hanging ring assembly is arranged on each arc-shaped plate. According to the technical scheme, the two arc-shaped plates clamp the piston rod and can be lifted upwards through the lifting ring assembly, the maintenance efficiency is effectively improved, time and labor are saved, potential safety hazards existing in maintenance operation are reduced, the protection sleeve is arranged between the arc-shaped plates and the piston rod, and damage to the piston rod can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment maintenance, and in particular to a clamping device for repairing the piston rod of an oil cylinder Background Technique

[0002] Repairing the piston rod of an oil cylinder is a meticulous process that requires professional knowledge, including preparation work, disassembly, inspection and evaluation, repair or replacement, assembly, testing, and subsequent maintenance. First, ensure the safety of the work area, wear personal protective equipment, and turn off the power supply of the hydraulic system to release the system pressure. Next, mark the positions of all components, gradually disassemble the oil cylinder, and remove the piston rod and piston assembly. Carefully check the surface of the piston rod for scratches, corrosion, wear, or bending, and check whether the seals are worn. According to the inspection results, clean and use sandpaper or polishing tools to repair minor wear. If it is severely damaged, replace the new piston rod and seals. During assembly, apply lubricant, reinstall according to the marked positions, and ensure that the connecting parts are tightened. Finally, conduct functional tests and pressure tests to ensure that the oil cylinder has no leaks and operates normally. After the repair is completed, regularly inspect, clean, and lubricate the oil cylinder to extend its service life. Note that the specific repair steps may vary depending on the oil cylinder model and manufacturer. It is recommended to refer to the relevant technical manuals or consult professional maintenance personnel

[0003] Due to the increase in the service life of the equipment of the multi-functional overhead crane, the frequent use of the tool part and the equipment damage caused by human misoperation, the sealing parts of large oil cylinders such as the grab, the crust breaker, and the anode are severely aged, and the maintenance frequency has increased. In the process of replacing the piston seals of oil cylinders such as the grab, in the past, the oil cylinder pipelines were disassembled and then lowered to the ground for maintenance with a chain hoist, or the entire grab mechanism was lifted by a chain hoist for disassembly. Due to factors such as the self-weight of the grab mechanism, the working space, and the magnetic field, the operation is difficult and there are many potential safety hazards Summary of the Invention

[0004] In view of the above technical problems, the present invention discloses a clamping device for repairing the piston rod of an oil cylinder, which includes two arc-shaped plates that jointly clamp the piston rod. A protective sleeve is installed between the arc-shaped plate and the piston rod, and a lifting ring assembly is installed on the arc-shaped plate. Through the above technical solution, the two arc-shaped plates can clamp the piston rod and be lifted upward through the lifting ring assembly, effectively improving the maintenance efficiency, saving time and effort, and reducing the potential safety hazards existing in the maintenance operation. A protective sleeve is installed between the arc-shaped plate and the piston rod, which can reduce the damage to the piston rod

[0005] Furthermore, side plates are fixedly installed on both sides of the arc-shaped plate, and a plurality of openings are provided on the side plates and fixed by bolts

[0006] Furthermore, the lifting ring assembly includes a lifting ring two, and the lifting ring two is fixedly installed on the arc-shaped plate and has the same axial direction as the arc-shaped plate

[0007] Further, a second limiting plate is fixedly installed at one corner of the second sling ring.

[0008] Further, a third limiting plate is fixedly installed at another corner of the second sling ring.

[0009] Further, the sling ring assembly includes a first sling ring which is fixedly installed on the arc-shaped plate, and the direction of the first sling ring is perpendicular to the axis of the arc-shaped plate. Through the above technical solution, sling rings in different directions can make the inclination degree of the piston rod different, and the force between the sling rings and the piston rod is also different. The limiting plates are also provided to ensure that the lifting rope is always on one side of the sling ring during hoisting, keeping the inclination and preventing it from falling off.

[0010] Further, a first limiting plate is fixedly installed at the upper corner of the first sling ring.

[0011] Further, a second side baffle is fixedly installed on one side of the side plate, and the protective sleeve is fixed between the second side baffles.

[0012] Further, first side baffles are installed on both the upper and lower sides of the side plate. Through the above technical solution, the protective sleeve is fixed on the arc-shaped plate before installing it on the arc-shaped plate. With the first side baffle and the second side baffle as preliminary limitations, when in use, the two arc-shaped plates can be directly buckled together without first winding them around the piston rod, avoiding the problem of cumbersome fixation and saving time and effort.

[0013] The beneficial effects of the present invention compared with the prior art are as follows:

[0014] (1) Through the technical solution of the present invention, the two arc-shaped plates can clamp the piston rod and be hoisted upward through the sling ring assembly, effectively improving the maintenance efficiency, saving time and effort, reducing the potential safety hazards existing in the maintenance operation, and a protective sleeve is installed between the arc-shaped plate and the piston rod, which can reduce the damage to the piston rod.

[0015] (2) Through the technical solution of the present invention, sling rings in different directions can make the inclination degree of the piston rod different, and the force between the sling rings and the piston rod is also different. The limiting plates are also provided to ensure that the lifting rope is always on one side of the sling ring during hoisting, keeping the inclination and preventing it from falling off.

[0016] (3) Through the technical solution of the present invention, the protective sleeve is fixed on the arc-shaped plate before installing it on the arc-shaped plate. With the first side baffle and the second side baffle as preliminary limitations, when in use, the two arc-shaped plates can be directly buckled together without first winding them around the piston rod, avoiding the problem of cumbersome fixation and saving time and effort. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 is Figure 1 an enlarged view of part A in

[0019] Figure 3 a schematic diagram of the arc plate structure of the present invention Figure 1 .

[0020] Figure 4 a schematic diagram of the arc plate structure of the present invention Figure 2 .

[0021] Figure 5 a schematic diagram of the arc plate structure of the present invention Figure 3 .

[0022] Reference numerals in the drawings: 1 - arc plate; 2 - opening; 3 - first lifting ring; 4 - first limiting plate; 5 - second lifting ring; 6 - side plate; 7 - second limiting plate; 8 - third limiting plate; 9 - first side baffle; 10 - second side baffle; 11 - protective sleeve; 12 - fixing hole. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] As Figures 1 - 5 shown, a clamping device for repairing a hydraulic cylinder piston rod includes two arc plates 1. The two arc plates 1 jointly clamp the piston rod. A protective sleeve 11 is installed between the arc plate 1 and the piston rod. A lifting ring assembly is installed on the arc plate 1. The two arc plates 1 clamping the piston rod can be lifted upward through the lifting ring assembly, effectively improving the maintenance efficiency, saving time and effort, and reducing the potential safety hazards existing in the maintenance operation. A protective sleeve 11 is installed between the arc plate 1 and the piston rod, which can reduce the damage to the piston rod. Side plates 6 are fixedly installed on both sides of the arc plate 1. A plurality of openings 2 are provided on the side plates 6. In this embodiment, four openings 2 are provided on each side plate 6. During fixation, bolts are used for fixation. The arc plate 1 and the side plate 6 are made of iron sheets as raw materials, and then formed by stamping. Using waste materials or recycled materials can complete the production, saving materials and being simple to manufacture. Among them, the opening 2 can also be formed by secondary stamping.

[0025] During the stamping process, it is first necessary to select appropriate thin sheet materials, such as cold-rolled steel sheets, stainless steel sheets, aluminum sheets, etc. In this embodiment, an iron plate is selected. The iron plate has good plasticity and ductility, making it suitable for stamping processing. Then, according to the design requirements of the product, the corresponding stamping die is designed and manufactured. The design accuracy and manufacturing quality of the die directly affect the quality and accuracy of the stamped parts.

[0026] The stamping process generally includes steps such as material feeding, positioning, stamping, and discharging. On a stamping machine, pressure is applied to the thin sheet through the die, causing it to undergo plastic deformation to form the desired shape. During the stamping process, parameters such as stamping force, stamping speed, and die clearance need to be controlled to ensure the quality and dimensional accuracy of the stamped parts.

[0027] In this embodiment, the lifting ring assembly includes a second lifting ring 5. The second lifting ring 5 is U-shaped, and its opening direction is fixedly installed on the arc plate 1. In this embodiment, it is fixedly installed by welding, and the opening direction is the same as the axial direction of the arc plate 1. A second limiting plate 7 is fixedly installed at one corner of the second lifting ring 5, and a third limiting plate 8 is fixedly installed at the other corner of the second lifting ring 5. During lifting, it is necessary to lift at an angle so that the arc plate 1 and the piston rod can squeeze each other to increase the friction force. Therefore, the lifting rope should be between the limiting rod and the side rod of the second lifting ring 5, that is, eccentrically lifted at the corner. The lifting ring assembly also includes a first lifting ring 3. The first lifting ring 3 is U-shaped, and its opening position is welded to the arc plate 1. The opening direction is perpendicular to the axial direction of the arc plate 1. A first limiting plate 4 is fixedly installed at the upper corner of the first lifting ring 3, and the first limiting plate 4 is fixed to the side of the first lifting ring 3. Both the second lifting ring 5 and the first lifting ring 3 can be installed on the arc plate 1, or only one can be welded, which is made according to requirements. In this embodiment, both the first lifting ring 3 and the second lifting ring 5 are installed. Through the above technical solution, setting lifting rings in different directions can make the inclination degree of the piston rod different, and the force between the piston rod is also different. Setting the limiting plates is also to ensure that the lifting rope is always on one side of the lifting ring during lifting, keeping the inclination and preventing it from falling off.

[0028] A second side baffle 10 is fixedly installed on one side of the side plate 6, and the protective sleeve 11 is installed and fixed between the second side baffles 10. First side baffles 9 are installed on both the upper and lower sides of the side plate 6. When lifting the piston rod, it is necessary to protect the piston rod to prevent the arc plate 1 from scratching the piston rod. Some leather or cloth needs to be padded, but it is very troublesome to wind these protections around the piston rod and then fix the arc plate 1. The protective device selects the protective sleeve 11. The two ends of the protective sleeve 11 are stuck between the first side baffles 9 and the second side baffles 10 to form a fixation with the arc plate 1. In this way, when in use, it can be directly fixed, which is very convenient.

[0029] The present invention has been further described by means of specific embodiments above. However, it should be understood that the specific description herein should not be construed as a limitation on the essence and scope of the present invention. Various modifications made by those of ordinary skill in the art to the above embodiments after reading this specification all fall within the scope protected by the present invention.

Claims

1. A clamping device for the piston rod of a maintenance oil cylinder, characterized in that, It includes two arc-shaped plates (1). The two arc-shaped plates (1) jointly clamp the piston rod. A protective sleeve (11) is installed between the arc-shaped plate (1) and the piston rod. A lifting ring assembly is installed on the arc-shaped plate (1). The lifting ring assembly includes a second lifting ring (5). The second lifting ring (5) is fixedly installed on the arc-shaped plate (1) and has the same axial direction as the arc-shaped plate (1). The lifting ring assembly includes a first lifting ring (3). The first lifting ring (3) is fixedly installed on the arc-shaped plate (1). The direction of the first lifting ring (3) is perpendicular to the axis of the arc-shaped plate (1).

2. The clamping device for the repair cylinder piston rod according to claim 1, characterized in that, Side plates (6) are fixedly installed on both sides of the arc-shaped plate (1). A plurality of openings (2) are provided on the side plates (6) and fixed by bolts.

3. A clamping device for repairing a cylinder rod of an oil cylinder according to claim 1, characterized in that, A second limiting plate (7) is fixedly installed at one corner of the second lifting ring (5).

4. A clamping device for a maintenance cylinder piston rod according to claim 3, characterized in that, A third limiting plate (8) is fixedly installed at another corner of the second lifting ring (5).

5. A clamping device for a maintenance cylinder piston rod according to claim 1, characterized in that, A first limiting plate (4) is fixedly installed at the upper side corner of the first lifting ring (3).

6. The clamping device for the maintenance of the piston rod of the oil cylinder according to claim 2, characterized in that, A second side baffle (10) is fixedly installed on one side of the side plate (6). The protective sleeve (11) is installed and fixed between the second side baffles (10).

7. A clamping device for the piston rod of a maintenance oil cylinder according to claim 6, characterized in that, First side baffles (9) are installed on both the upper and lower sides of the side plate (6).

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