A cylinder piston dismounting support device

Abstract

The utility model discloses large -scale piston dismantles relates to technical field, more particularly, relate to a kind of oil cylinder piston dismantling support device, adopt the structure provided by the utility model, mainly including lifting device and balancing device, the balancing device is connected with the lifting device, and load-bearing device for supporting piston is provided on the balancing device. Through the above structure, the balancing device can prevent large volume piston from tilting and collapsing, greatly reducing the possibility of damaged piston thread, suitable for piston dismantling work with or without piston guide sleeve, only need to adopt the piston of smaller rotating weight to complete the work, wherein, oil cylinder piston dismantling support tool has better safety performance, the piston weight is supported by rigid structure, there is no risk of falling piston to hurt people, secondly, simple operation, labor saving, efficient, adopt worm gear drive mechanism, more labor saving when lifting or lowering piston.

Description

Technical Field

[0001] This utility model relates to the field of large piston disassembly and assembly, specifically to a hydraulic cylinder piston disassembly and assembly support device. Background Technology

[0002] Large metal gates are commonly used in water conservancy projects, hydroelectric power stations, ship locks, canals, and other similar applications to control water flow and regulate water levels. The opening and closing of these gates is achieved using hydraulic cylinders, which are hydraulic actuators that convert oil pressure into mechanical energy and perform linear reciprocating motion. When a cylinder malfunctions and requires repair, it is typically lifted from the frame or gate slot and placed on a repair platform. Disassembling and assembling the cylinder piston on-site often results in time-consuming and labor-intensive disassembly and assembly, damage to the workpiece surface, and in severe cases, the piston may fall to the ground and damage or injure personnel, or the threads may become damaged and stuck, making disassembly impossible.

[0003] The common method for disassembling pistons for large hydraulic cylinders on-site is as follows: After separating the piston and piston rod from the cylinder, place them on a support. If the piston has a guide sleeve, a sling is placed on the guide sleeve, and a lifting device is used in conjunction with a hand-operated hoist to lift the piston appropriately. Then, the piston, along with the guide sleeve, is slowly separated from the piston rod by rotating the piston. If the piston does not have a guide sleeve, the piston is fixed, the piston rod is placed on a rotatable bracket, and the concentricity of the piston rod and piston is adjusted. Then, the piston rod is slowly separated from the piston by rotating the piston rod. The common method for assembling pistons on-site is the same. The common method of disassembling and assembling pistons on-site has the following shortcomings: The piston has a disassembly and assembly scheme with a guide sleeve. The piston, suspended by the sling, cannot be adjusted for parallelism with the piston rod, potentially causing tilting. This leads to uneven stress on the piston threads, damaging them. Furthermore, with the piston having a guide sleeve, even small changes in stress on the sling (a non-rigid load-bearing component) can cause the piston to wobble, damaging the threads, or even detach from the sling and fall to the ground or workers, posing a significant safety hazard. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic cylinder piston disassembly and assembly support device to solve the problem of significant damage to piston threads during disassembly and assembly in the prior art.

[0005] This utility model is achieved through the following technical solution: A hydraulic cylinder piston assembly and disassembly support device includes a lifting device and a balancing device mounted on a rolling device. The balancing device is connected to the lifting device, and a load-bearing device for supporting the piston is provided on the balancing device. The balancing device is used to support the load-bearing device.

[0006] Preferably, the load-bearing device includes a support block and a plurality of rolling units disposed on the support block. Each rolling unit includes a roller, a roller bearing, a roller tapered sleeve, and a roller stop plate. The roller bearing and the roller tapered sleeve are respectively disposed on both sides of the load-bearing device. Both ends of the roller are respectively connected to the roller bearing. The roller stop plate is disposed on the side of the support block for all roller bearings.

[0007] Preferably, the balancing device includes a first support plate and a plurality of adjusting units disposed on the first support plate, wherein the adjusting unit includes a balancing screw, a balancing nut, a back tightening nut and a round nut; One end of the balance screw passes through the first support plate and slides in contact with it. The round nut is connected to the end of the balance screw away from the first support plate. The back-tightening nut is located on the balance screw near the round nut at one end. The balance nut is located on the balance screw near the first support plate at one end.

[0008] Preferably, the bottom of the support plate is further provided with a first reinforcing rib plate.

[0009] Preferably, the bottom of the first support plate is also provided with a limiting sleeve, and the support plate is connected to the lifting device through the limiting sleeve.

[0010] Preferably, the support plate is further provided with a limiting frame, and the two sides of the limiting frame are respectively threaded with set screws.

[0011] Preferably, the lifting device includes a lifting screw and a power device for moving the lifting screw up and down; The power unit includes a worm gear, a turbine, a thrust bearing, and two support devices. The turbine is threadedly connected to the lifting screw. The worm gear is connected between the two support devices and meshes with the turbine. The turbine is connected to the base via the thrust bearing. Both the lifting screw and the base have keyways, and a key is provided in the keyway between the lifting screw and the base.

[0012] Preferably, the support device includes a second support plate and a worm bearing disposed on the second support plate, wherein a bearing cap is disposed on the top of the worm bearing and a worm stop plate is disposed on the outer side of the worm bearing.

[0013] Preferably, the rolling device includes a third support plate and a plurality of rolling units disposed below the third support plate. Each rolling unit includes a rolling bracket connected to the third support plate. The roller is mounted on the rolling bracket via a roller shaft, and a roller stop plate is provided on one side of the roller shaft.

[0014] The technical solution of this utility model has at least the following advantages and beneficial effects: The structure provided by this utility model mainly includes a lifting device and a balancing device. The balancing device is connected to the lifting device, and a load-bearing device for supporting the piston is provided on the balancing device. Through this structure, the balancing device can prevent large-volume pistons from tilting or collapsing, greatly reducing the possibility of damage to the piston threads. It is suitable for piston assembly and disassembly work with or without piston guide sleeves, requiring only a piston with a relatively small rotating weight to complete the work. The hydraulic cylinder piston assembly and disassembly support tool has better safety performance, as the piston weight is supported by a rigid structure, eliminating the risk of piston falling and injuring people. Furthermore, it is simple, labor-saving, and efficient to operate. The worm gear drive mechanism makes raising or lowering the piston more effortless, has multi-directional adjustment capabilities, and allows for more precise piston assembly and disassembly, reducing the risk of damage to the piston and threads. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram illustrating the assembly and usage method of the various components of the present invention; Figure 2 This is a schematic diagram of the load-bearing device structure of the present invention; Figure 3 This is a schematic diagram of the balancing device structure of the present invention; Figure 4 This is a schematic diagram of the lifting device structure of the present invention; Figure 5 This is a schematic diagram of the rolling device structure of the present invention.

[0017] Icons: 100-Piston rod, 200-Piston, 300-Bearing device, 310-Roller, 311-Roller bearing, 312-Roller tapered sleeve, 313-Roller stop plate, 400-Balancing device, 410-Balancing screw, 411-Balancing nut, 412-Tightening nut, 413-Round nut, 420-Limit sleeve, 430-First reinforcing rib plate, 440-Setting screw, 500-Lifting device, 510-Worm, 511-Second support plate, 512-Bearing cap, 513-Worm bearing, 514-Worm stop plate, 520-Turbine, 521-Lifting screw, 522-Thrust bearing, 523-Key, 530-Second reinforcing rib plate, 600-Rolling device, 610-Rolling bracket, 611-Roller shaft, 612-Roller, 613-Roller stop plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Please refer to Figures 1-5 The present invention provides a hydraulic cylinder piston 200 disassembly and assembly support device, including a lifting device 500 and a balancing device 400 disposed on a rolling device 600. The balancing device 400 is connected to the lifting device 500, and a load-bearing device 300 for supporting the piston 200 is disposed on the balancing device 400. The balancing device 400 is used to support the load-bearing device 300.

[0020] The structure provided by this utility model mainly includes a lifting device 500 and a balancing device 400. The balancing device 400 is connected to the lifting device 500. The balancing device 400 is provided with a load-bearing device 300 for supporting the piston 200. The balancing device 400 is used to support the load-bearing device 300. Through the above structure, the balancing device 400 can prevent the large-volume piston 200 from tilting or collapsing, greatly reducing the possibility of damage to the piston 200 threads. It is suitable for the disassembly and assembly of piston 200 with or without piston 200 guide sleeves, and only requires the use of piston 200 with smaller rotational weight to complete the work. Among them, the hydraulic cylinder piston 200 disassembly and assembly support tool has better safety performance. The weight of piston 200 is supported by a rigid structure, eliminating the risk of piston 200 falling and injuring people. Secondly, it is simple, labor-saving, and efficient to operate. It adopts a worm gear 510 drive mechanism, which makes it easier to raise or lower piston 200. It has multiple directional adjustment capabilities, making the disassembly and assembly of piston 200 more precise and less likely to cause damage to piston 200 and threads.

[0021] Meanwhile, the hydraulic cylinder piston 200 disassembly and assembly support tool is simple to operate, highly practical, and widely applicable. It closely meets the actual needs of on-site use and can be used in conjunction with the hydraulic cylinder on-site maintenance platform and track. It not only improves the efficiency of piston 200 disassembly and assembly, but also provides high-quality safety assurance for the on-site disassembly and maintenance of large hydraulic cylinders, greatly reducing the risk of piston 200 damage or falling and injuring people. It has a significant effect on cost reduction and efficiency improvement.

[0022] In one exemplary embodiment of this utility model, the load-bearing device 300 includes a support block and a plurality of rolling units disposed on the support block. Each rolling unit includes a roller 310, a roller bearing 311, a roller tapered sleeve 312, and a roller stop plate 313. The roller bearing 311 and the roller tapered sleeve 312 are respectively disposed on both sides of the load-bearing device 300. The roller tapered sleeve 312 is used to fix the bearing 310. Both ends of the roller 310 are respectively connected to the roller bearing 311. The roller stop plate 313 is disposed on the side of the support block for all the roller bearings 311.

[0023] Specifically, the balancing device 400 includes a first support plate and a plurality of adjustment units disposed on the support plate. The adjustment units include a balancing screw 410, a balancing nut 411, a back-tightening nut 412, and a round nut 413. One end of the balance screw 410 passes through the first support plate and slides in contact with it. That is, the four corners of the first support plate have through holes slightly larger than the diameter of the balance screw 410. The balance screw moves within the through holes. The round nut 413 is connected to the end of the balance screw 410 away from the first support plate. The back-tightening nut 412 is set on the end of the balance screw 410 near the round nut 413. The balance nut 411 is set on the end of the balance screw 410 near the first support plate.

[0024] Secondly, the bottom of the first support plate is also provided with a first reinforcing rib plate 430 to strengthen the strength of the first support plate. The bottom of the first support plate is also provided with a limiting sleeve 420. The support plate is connected to the lifting device 500 through the limiting sleeve 420. The limiting sleeve 420 reduces the possibility of the first support plate tilting. The support plate is also provided with a limiting frame. The two sides of the limiting frame are respectively threaded with set screws 440. The purpose of the limiting frame is to limit the possibility of the load-bearing device 300 sliding. If it is necessary to fine adjust the position of the load-bearing device 300, the set screws 440 on both sides can be rotated to adjust the position of the load-bearing device 300.

[0025] In one exemplary embodiment of this utility model, the lifting device 500 includes a lifting screw 521 and a power device for the vertical movement of the lifting screw 521. The power device includes a worm gear 510, a turbine gear 520, a thrust bearing 522, and two support devices. The turbine gear 520 is threadedly connected to the lifting screw 521. The worm gear 510 is connected between the two support devices and meshes with the turbine gear 520. The turbine gear 520 is connected to the base via the thrust bearing 522. Both the lifting screw 521 and the base have keyways, and a key 523 is provided in the keyway between the lifting screw 521 and the base. The key 523 is used to restrict the rotation of the lifting screw 521 to prevent the lifting screw 521 from only rotating without lifting when the worm gear is rotated.

[0026] The support device includes a second support plate 511 and a worm bearing 513 disposed on the second support plate 511. A bearing cap 512 is disposed on the top of the worm bearing 513, and a worm stop plate 514 is disposed on the outer side of the worm bearing 513.

[0027] In one exemplary embodiment of this utility model, the rolling device 600 includes a third support plate and a plurality of rolling units disposed below the third support plate. The rolling unit includes a rolling bracket 610 connected to the third support plate. The roller 612 is disposed on the rolling bracket 610 via a roller 612 shaft 611. A roller 612 stop plate is disposed on one side of the roller 612 shaft 611.

[0028] When using this utility model: When the cylinder piston 200 and piston rod 100 are placed in the maintenance station to be disassembled, the above-mentioned cylinder piston 200 disassembly and assembly support tool is set below the piston 200. The worm gear 510 of the lifting device 500 of the support tool is slowly rotated so that the lifting screw 521 of the lifting device 500 rises and lifts the balancing device 400 and the load-bearing device 300. When the roller 310 of the load-bearing device 300 approaches the lower surface of the piston 200, adjust the two set screws 440 of the balancing device 400 so that the load-bearing device 300 is directly below the piston 200. Continue to rotate the worm gear 510 so that the roller 310 of the load-bearing device 300 is in close contact with the lower surface of the piston 200 and bears an appropriate weight. Adjust the four balance nuts 411 of the balancing device 400 so that the bottom of the balancing device 400 contacts the upper surface of the rolling device 600, thus completing the support of the load-bearing device 300. At the same time, the balancing device 400 can be finely adjusted to keep the load-bearing device 300 parallel to the piston 200. Slowly rotate piston 200 to gradually disengage the threads of piston 200 and piston rod 100. At this time, under the action of friction, the roller 612 of the support tool slowly rotates, and the support tool will move away from piston 200 and piston rod 100 together. Finally, piston 200 separates from piston rod 100, with piston rod 100 remaining in the maintenance position and piston 200 placed on the support tool. The assembly sequence of piston 200 is the reverse of the above sequence.

[0029] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulic cylinder piston disassembly and assembly support device, characterized in that, It includes a lifting device (500) and a balancing device (400) mounted on the rolling device (600). The balancing device (400) is connected to the lifting device (500). The balancing device (400) is provided with a load-bearing device (300) for supporting the piston (200). The balancing device (400) is used to support the load-bearing device (300). The load-bearing device (300) includes a support block and a plurality of rolling units disposed on the support block. Each rolling unit includes a roller (310), a roller bearing (311), a roller tapered sleeve (312), and a roller stop plate (313). The roller bearing (311) and the roller tapered sleeve (312) are respectively disposed on both sides of the load-bearing device (300). Both ends of the roller (310) are respectively connected to the roller bearing (311). The roller stop plate (313) is disposed on the side of the support block for all the roller bearings (311).

2. The hydraulic cylinder piston disassembly and assembly support device according to claim 1, characterized in that, The balancing device (400) includes a first support plate and a plurality of adjustment units disposed on the first support plate. The adjustment units include a balancing screw (410), a balancing nut (411), a back tightening nut (412), and a round nut (413). One end of the balance screw (410) passes through the first support plate and slides in contact with it. The round nut (413) is connected to the end of the balance screw (410) away from the first support plate. The back tightening nut (412) is located on the balance screw (410) near the end of the round nut (413). The balance nut (411) is located on the balance screw (410) near the end of the first support plate.

3. The hydraulic cylinder piston disassembly and assembly support device according to claim 2, characterized in that, The bottom of the support plate is also provided with a first reinforcing rib plate (430).

4. The hydraulic cylinder piston disassembly and assembly support device according to claim 3, characterized in that, The bottom of the first support plate is also provided with a limiting sleeve (420), and the support plate is connected to the lifting device (500) through the limiting sleeve (420).

5. The hydraulic cylinder piston disassembly and assembly support device according to claim 4, characterized in that, The first support plate is also provided with a limit frame, and the two sides of the limit frame are respectively threaded with set screws (440).

6. The hydraulic cylinder piston disassembly and assembly support device according to claim 5, characterized in that, The lifting device (500) includes a lifting screw (521) and a power device for the lifting screw (521) to move up and down; The power unit includes a worm (510), a turbine (520), a thrust bearing (522), and two support devices. The turbine (520) is threadedly connected to the lifting screw (521). The worm (510) is connected between the two support devices and meshes with the turbine (520). The turbine (520) is connected to the base above through the thrust bearing (522). Both the lifting screw (521) and the base are provided with keyways. A key (523) is provided in the keyway between the lifting screw (521) and the base.

7. A hydraulic cylinder piston disassembly and assembly support device according to claim 6, characterized in that, The support device includes a second support plate (511) and a worm bearing (513) disposed on the second support plate (511). A bearing cap (512) is disposed on the top of the worm bearing (513), and a worm stop plate (514) is disposed on the outer side of the worm bearing (513).

8. The hydraulic cylinder piston disassembly and assembly support device according to claim 7, characterized in that, The rolling device (600) includes a third support plate and a plurality of rolling units disposed below the third support plate. Each rolling unit includes a roller (612) and a rolling bracket (610) connected to the third support plate. The roller (612) is disposed on the rolling bracket (610) via a roller shaft (611). A roller stop plate (613) is disposed on one side of the roller shaft (611).

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