A valve cover jacking device for valve maintenance

Abstract

This application relates to a valve cover lifting device for valve maintenance, comprising two sets of support blocks arranged opposite each other, each set of support blocks having two blocks. An installation assembly is provided on the outer side of each support block. The installation assembly includes a first rotating seat fixedly connected to the outer side of the first set of support blocks, a first rotating block rotatably connected inside the first rotating seat, a fixing belt fixedly connected to the bottom of the first rotating block, and fixing teeth fixedly connected to the outer side of the fixing belt. A sliding frame is fixedly connected to the outer side of the second set of support blocks, a rotating shaft rotatably connected inside the sliding frame, the rotating shaft passing through the sliding frame, a locking block fixedly connected to the outer side of the rotating shaft, and a torsion spring fixedly connected between the outer side of the locking block and the inside of the sliding frame. Connecting plates are fixedly connected to both ends of the rotating shaft, and a handle is fixedly connected between the two connecting plates. This application, through structural design of the valve cover lifting device, solves the technical problem that existing valve cover lifting devices cannot be used for valve maintenance on pipelines installed in special locations because they cannot reach the ground.

Description

Technical Field

[0001] This application belongs to the technical field of nuclear power mechanical lifting equipment, specifically relating to a valve cover lifting device for valve maintenance. Background Technology

[0002] Various valves are installed on the piping systems within nuclear power plants. These valves not only connect pipelines and control their flow, but also monitor internal pressure and provide safety warnings. To improve transmission efficiency and reduce costs, the piping dimensions of nuclear power plant water and steam systems are typically large, resulting in relatively large valves. This complicates valve installation and maintenance, especially during routine repairs due to often rudimentary site conditions. During major overhauls, valve repairs on the water and steam system piping frequently require opening valve covers, necessitating the use of valve cover lifting equipment. In operation, the lifting equipment is placed on the installation foundation, the valve cover is lifted, and the internal components are opened for inspection. After repairs, the lifting equipment is lowered, and the valve cover is reinstalled.

[0003] Because the water and steam system pipelines of nuclear power units are large and have high pressure, the valves are designed to be large and the valve covers are also heavy. In this case, a valve cover lifting device is needed to lift the valve cover. However, the existing valve cover lifting devices are generally supported by the ground to lift the valve cover. But some pipeline installation locations are special, and the valve cover lifting device cannot reach the ground, so the valve cover lifting device cannot be used, which makes it difficult to lift the valve cover and hinders the maintenance of the valve. Summary of the Invention

[0004] In view of this, this application provides a valve cover lifting device for valve maintenance. Through structural design of the valve cover lifting device, it solves the technical problem that existing valve cover lifting devices cannot be used on pipelines installed in special locations because they cannot reach the ground, which makes it difficult to lift the valve cover and thus hinders valve maintenance.

[0005] This application provides a valve cover lifting device for valve maintenance. The valve cover lifting device includes four support blocks, which are arranged in two groups and arranged opposite each other. An installation assembly is provided on the outside of each support block. The installation assembly includes a first rotating seat fixedly connected to the outside of the first group of support blocks. A first rotating block is rotatably connected inside the first rotating seat. A fixing belt is fixedly connected to the bottom of the first rotating block. A fixing tooth is fixedly connected to the outside of the fixing belt. A sliding frame is fixedly connected to the outside of the second group of support blocks. A rotating shaft is rotatably connected inside the sliding frame. The rotating shaft passes through the sliding frame. A locking block is fixedly connected to the outside of the rotating shaft. A torsion spring is fixedly connected between the outside of the locking block and the inside of the sliding frame. Connecting plates are fixedly connected to both ends of the rotating shaft. A handle is fixedly connected between the two connecting plates.

[0006] In one specific embodiment of this application, a lifting assembly is provided on the top of the support block. The lifting assembly includes a base rotatably connected to the top of the support block, a support frame is fixedly connected to the top of the base, a first hydraulic cylinder is fixedly connected to the top of the support frame, and a lifting plate is fixedly connected to the top of the first hydraulic cylinder.

[0007] In one specific embodiment of this application, a clamping assembly is provided on the top of the lifting plate. The clamping assembly includes two upright plates fixedly connected to the top of the lifting plate, a clamping plate rotatably connected between the two upright plates, a second rotating seat fixedly connected to the bottom of the clamping plate, a second rotating block rotatably connected inside the second rotating seat, a second hydraulic cylinder fixedly connected to the bottom of the second rotating block, and the bottom of the second hydraulic cylinder fixedly connected to the top of the lifting plate.

[0008] In one specific embodiment of this application, two extension components are provided between the two sets of support blocks. Each extension component includes a first screw fixedly connected to the outside of the two sets of support blocks, a first screw cylinder threadedly connected to the outside of the first screw, and a sliding plate provided at the bottom of the first screw cylinder. The sliding plate is slidably connected to the inside of the two sets of support blocks.

[0009] In one specific embodiment of this application, an auxiliary component is provided on the outside of the support block. The auxiliary component includes a third rotating seat fixedly connected to the outside of the support block, a third rotating block rotatably connected inside the third rotating seat, a sliding frame fixedly connected to the end of the third rotating block, and a limit rod slidably connected inside the sliding frame.

[0010] In one specific embodiment of this application, an installation component is provided on the outer side of the sliding frame. The installation component includes a first limiting block fixedly connected to the outer side of the sliding frame, a first locking block slidably connected to the outer side of the first limiting block, a second screw slidably connected inside the first locking block, two support plates slidably connected to the outer side of the second screw, the support plates being fixedly connected to the outer side of the sliding frame, the second screw penetrating the support plates, and a nut being threadedly connected to the outer side of the second screw.

[0011] In one specific embodiment of this application, a support assembly is provided inside the first locking block. The support assembly includes a second screw cylinder rotatably connected inside the first locking block, a third screw rod threadedly connected inside the second screw cylinder, a slider slidably connected inside the third screw rod, and a transmission disc fixedly connected to the top of the second screw cylinder.

[0012] In one specific embodiment of this application, a stabilizing component is provided on the outer side of the second screw barrel. The stabilizing component includes a second locking block rotatably connected to the outer side of the second screw barrel. The bottom of the second locking block is fixedly connected to the top of the slider. A second limiting block is slidably connected inside the second locking block. A fourth rotating block is fixedly connected to the end of the second limiting block. A fourth rotating seat is rotatably connected to the outer side of the fourth rotating block. The end of the fourth rotating seat is fixedly connected to the outer side of the support block.

[0013] The beneficial effects of this technical solution are as follows: by pulling the fixing belt, the first rotating block is driven to rotate inside the first rotating seat, thereby driving the fixing teeth to slide inside the slide frame, thereby driving the locking block to rotate. When it reaches the designated position, the locking block will limit the position of the fixing belt through the cooperation between it and the fixing teeth, so that the whole device can be fixed on the outside of the pipeline, thereby enabling the device to be used in special terrain, thereby improving the adaptability of the device, and enabling the device to lift the valve cover without contacting the ground, thereby making it easier to maintain the valve. Attached Figure Description

[0014] Figure 1 The diagram shown is a top view of a valve cover lifting device for valve maintenance according to an embodiment of this application.

[0015] Figure 2 The diagram shown is a bottom view of a valve cover lifting device for valve maintenance according to an embodiment of this application.

[0016] Figure 3 The diagram shown is a side view of some components in a valve cover lifting device for valve maintenance according to an embodiment of this application.

[0017] Figure 4The diagram shown is an enlarged structural schematic of some components in a valve cover lifting device for valve maintenance provided in an embodiment of this application.

[0018] Figure 5 As shown Figure 3 A magnified structural diagram of area A in the middle.

[0019] Figure 6 The diagram shown is a structural schematic of an internal component of a valve cover lifting device for valve maintenance, provided in an embodiment of this application.

[0020] Figure 7 The diagram shown is a side view of the disassembled structure of a valve cover lifting device for valve maintenance according to an embodiment of this application.

[0021] Figure 8 The diagram shown is a schematic representation of another perspective of the disassembled structure of a valve cover lifting device for valve maintenance provided in an embodiment of this application.

[0022] Figure 9 As shown Figure 8 A magnified structural diagram of area B in the middle.

[0023] In the diagram: 1. Erection block; 2. First rotating seat; 3. First rotating block; 4. Fixing belt; 5. Fixing tooth; 6. Slide frame; 7. Rotating shaft; 8. Clamping block; 9. Torsion spring; 10. Connecting plate; 11. Handle; 12. Base; 13. Support frame; 14. First hydraulic cylinder; 15. Lifting plate; 16. Vertical plate; 17. Clamping plate; 18. Second hydraulic cylinder; 19. Second rotating block; 20. Second rotating seat; 21. First screw barrel; 22. 1. First screw; 23. Sliding plate; 24. Third rotating seat; 25. Third rotating block; 26. Sliding frame; 27. Limiting rod; 28. First limiting block; 29. ​​Support plate; 30. First locking block; 31. Second screw; 32. Nut; 33. Second screw barrel; 34. Slider; 35. Third screw; 36. Second limiting block; 37. Fourth rotating block; 38. Fourth rotating seat; 39. Second locking block; 40. Transmission disc. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] like Figures 1 to 9As shown, at least one embodiment of this application provides a valve cover lifting device for valve maintenance, including a support block 1. Four support blocks 1 are provided, and the four support blocks 1 are divided into two groups. The two groups of support blocks 1 are arranged opposite each other. An installation component is provided on the outside of the support block 1. The installation component includes a first rotating seat 2 fixedly connected to the outside of the first group of support blocks 1. A first rotating block 3 is rotatably connected inside the first rotating seat 2. A fixing belt 4 is fixedly connected to the bottom of the first rotating block 3. A fixing tooth 5 is fixedly connected to the outside of the fixing belt 4. A sliding frame 6 is fixedly connected to the outside of the second group of support blocks 1. A rotating shaft 7 is rotatably connected inside the sliding frame 6. The rotating shaft 7 passes through the sliding frame 6. A locking block 8 is fixedly connected to the outside of the rotating shaft 7. A torsion spring 9 is fixedly connected between the outside of the locking block 8 and the inside of the sliding frame 6. A connecting plate 10 is fixedly connected to both ends of the rotating shaft 7. A handle 11 is fixedly connected between the two connecting plates 10.

[0026] In the above embodiment, by pulling the fixing belt 4, the first rotating block 3 is driven to rotate inside the first rotating seat 2, thereby driving the fixing tooth 5 to slide inside the slide frame 6, thereby driving the locking block 8 to rotate. When it reaches the designated position, the locking block 8 will limit the position of the fixing belt 4 through the cooperation between it and the fixing tooth 5, so that the whole device can be fixed on the outside of the pipe, so that the device can be used in special terrain, thereby improving the adaptability of the device, and so that the device can lift the valve cover without contacting the ground, thereby making it easier to inspect the valve.

[0027] When disassembly is required, the handle 11 can be pulled to rotate the connecting plate 10, which in turn rotates the shaft 7, which in turn rotates the locking block 8, so that the fixing teeth 5 and the fixing belt 4 can be separated from the slide frame 6, allowing for easy disassembly.

[0028] In at least one embodiment of this application, such as Figure 3 As shown, a lifting assembly is provided on the top of the support block 1. The lifting assembly includes a base 12 rotatably connected to the top of the support block 1. A support frame 13 is fixedly connected to the top of the base 12. A first hydraulic cylinder 14 is fixedly connected to the top of the support frame 13. A lifting plate 15 is fixedly connected to the top of the first hydraulic cylinder 14.

[0029] In the above embodiment, by rotating the support frame 13, the first hydraulic cylinder 14 is driven to rotate, which in turn drives the lifting plate 15 to rotate, thereby changing the angle of the lifting plate 15 and making the device suitable for valve covers of different sizes.

[0030] In at least one embodiment of this application, such as Figure 5As shown, a clamping assembly is provided on the top of the lifting plate 15. The clamping assembly includes two upright plates 16 fixedly connected to the top of the lifting plate 15. A clamping plate 17 is rotatably connected between the two upright plates 16. A second rotating seat 20 is fixedly connected to the bottom of the clamping plate 17. A second rotating block 19 is rotatably connected inside the second rotating seat 20. A second hydraulic cylinder 18 is fixedly connected to the bottom of the second rotating block 19. The bottom of the second hydraulic cylinder 18 is fixedly connected to the top of the lifting plate 15.

[0031] In the above embodiment, the second hydraulic cylinder 18 drives the second rotating block 19 to rise and fall, thereby driving the second rotating seat 20 to rise and fall, thereby driving the clamping plate 17 to rotate, so as to clamp and release the valve cover, thereby improving the safety of the device when lifting the valve cover.

[0032] In at least one embodiment of this application, such as Figure 6 As shown, two extension components are provided between the two sets of support blocks 1. The extension components include a first screw 22 fixedly connected to the outside of the two sets of support blocks 1, a first screw cylinder 21 threadedly connected to the outside of the first screw 22, and a sliding plate 23 provided at the bottom of the first screw cylinder 21. The sliding plate 23 is slidably connected to the inside of the two sets of support blocks 1.

[0033] In the above embodiment, by rotating the first screw 21, the two first screws 22 are moved, thereby moving the two sets of mounting blocks 1 away, so that the device can be applied to pipes of different sizes.

[0034] In at least one embodiment of this application, such as Figure 7 As shown, an auxiliary component is provided on the outside of the support block 1. The auxiliary component includes a third rotating seat 24 fixedly connected to the outside of the support block 1. A third rotating block 25 is rotatably connected inside the third rotating seat 24. A sliding frame 26 is fixedly connected to the end of the third rotating block 25. A limit rod 27 is slidably connected inside the sliding frame 26.

[0035] In the above embodiments, the cooperation between the limiting rod 27 and the sliding frame 26 ensures that the mounting block 1 remains stable during adjustment. Furthermore, the cooperation between the third rotating seat 24 and the third rotating block 25 prevents the first screw cylinder 21 from getting stuck when it drives the first screw 22 to move.

[0036] In at least one embodiment of this application, such as Figure 7As shown, an installation component is provided on the outside of the sliding frame 26. The installation component includes a first limiting block 28 fixedly connected to the outside of the sliding frame 26, a first locking block 30 slidably connected to the outside of the first limiting block 28, a second screw 31 slidably connected inside the first locking block 30, two support plates 29 slidably connected to the outside of the second screw 31, the outside of the support plates 29 being fixedly connected to the outside of the sliding frame 26, the second screw 31 passing through the support plates 29, and a nut 32 threadedly connected to the outside of the second screw 31.

[0037] In the above embodiment, by fitting the first locking block 30 onto the outside of the first limiting block 28, then inserting the second screw 31 into the support plate 29 and the first locking block 30, and then rotating the nut 32, the position of the first locking block 30 is fixed. In this way, when the device needs to be reinforced, the support component can be installed on the outside of the sliding frame 26 through this device, thereby reinforcing the device.

[0038] In at least one embodiment of this application, such as Figure 7 As shown, a support assembly is provided inside the first locking block 30. The support assembly includes a second screw cylinder 33 rotatably connected inside the first locking block 30, a third screw 35 threadedly connected inside the second screw cylinder 33, a slider 34 slidably connected inside the third screw 35, and a transmission disc 40 fixedly connected to the top of the second screw cylinder 33.

[0039] In the above embodiment, by rotating the transmission disk 40, the second screw 33 is driven to rotate, which in turn drives the third screw 35 to move, so that the third screw 35 can contact the ground, thereby increasing the stability of the device.

[0040] In at least one embodiment of this application, such as Figure 7 As shown, a stabilizing component is provided on the outer side of the second screw cylinder 33. The stabilizing component includes a second locking block 39 rotatably connected to the outer side of the second screw cylinder 33. The bottom of the second locking block 39 is fixedly connected to the top of the slider 34. A second limiting block 36 is slidably connected inside the second locking block 39. A fourth rotating block 37 is fixedly connected to the end of the second limiting block 36. A fourth rotating seat 38 is rotatably connected to the outer side of the fourth rotating block 37. The end of the fourth rotating seat 38 is fixedly connected to the outer side of the support block 1.

[0041] In the above embodiment, by moving the second screw cylinder 33, the second locking block 39 is driven to be sleeved on the outside of the second limiting block 36, thereby increasing the stability of the second screw cylinder 33 when rotating.

[0042] Working principle and usage process: By pulling the fixing band 4, the first rotating block 3 is driven to rotate inside the first rotating seat 2, which in turn drives the fixing tooth 5 to slide inside the slide frame 6, thereby driving the locking block 8 to rotate. When it reaches the designated position, the locking block 8 will limit the position of the fixing band 4 through the cooperation between it and the fixing tooth 5, so that the whole device can be fixed on the outside of the pipeline, so that the device can be used in special terrain, thereby improving the adaptability of the device, and allowing the device to lift the valve cover without contacting the ground, thus making it easier to maintain the valve.

[0043] When disassembly is required, the handle 11 can be pulled to rotate the connecting plate 10, which in turn rotates the shaft 7, which in turn rotates the locking block 8, so that the fixing teeth 5 and the fixing belt 4 can be separated from the slide frame 6, allowing for easy disassembly.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve cover lifting device for valve maintenance, characterized in that, The device includes four mounting blocks arranged in two groups, with the two groups facing each other. An installation assembly is mounted on the outer side of each mounting block. The installation assembly includes a first rotating seat fixedly connected to the outer side of the first group of mounting blocks, with a first rotating block rotatably connected inside the first rotating seat. A fixing strap is fixedly connected to the bottom of the first rotating block, and fixing teeth are fixedly connected to the outer side of the fixing strap. A sliding frame is fixedly connected to the outer side of the second group of mounting blocks, with a rotating shaft rotatably connected inside the sliding frame. The rotating shaft passes through the sliding frame, and a locking block is fixedly connected to the outer side of the rotating shaft. A torsion spring is fixedly connected between the outer side of the locking block and the inside of the sliding frame. Connecting plates are fixedly connected to both ends of the rotating shaft, and a handle is fixedly connected between two of the connecting plates. A lifting assembly is provided on the top of the support block. The lifting assembly includes a base rotatably connected to the top of the support block, a support frame fixedly connected to the top of the base, a first hydraulic cylinder fixedly connected to the top of the support frame, and a lifting plate fixedly connected to the top of the first hydraulic cylinder. A clamping assembly is provided at the top of the lifting plate. The clamping assembly includes two upright plates fixedly connected to the top of the lifting plate, and a clamping plate rotatably connected between the two upright plates. A second rotating seat is fixedly connected to the bottom of the clamping plate, and a second rotating block is rotatably connected inside the second rotating seat. A second hydraulic cylinder is fixedly connected to the bottom of the second rotating block, and the bottom of the second hydraulic cylinder is fixedly connected to the top of the lifting plate. Two extension components are provided between the two sets of support blocks. Each extension component includes a first screw fixedly connected to the outside of the two sets of support blocks. A first screw is threadedly connected to the outside of the first screw. A sliding plate is provided at the bottom of the first screw. The sliding plate is slidably connected to the inside of the two sets of support blocks.

2. The valve cover lifting device for valve maintenance according to claim 1, characterized in that, An auxiliary component is provided on the outside of the support block. The auxiliary component includes a third rotating seat fixedly connected to the outside of the support block. A third rotating block is rotatably connected inside the third rotating seat. A sliding frame is fixedly connected to the end of the third rotating block. A limit rod is slidably connected inside the sliding frame.

3. The valve cover lifting device for valve maintenance according to claim 2, characterized in that, An installation component is provided on the outside of the sliding frame. The installation component includes a first limiting block fixedly connected to the outside of the sliding frame. A first locking block is slidably connected to the outside of the first limiting block. A second screw is slidably connected inside the first locking block. Two support plates are slidably connected to the outside of the second screw. The support plates are fixedly connected to the outside of the sliding frame. The second screw passes through the support plates. A nut is threadedly connected to the outside of the second screw.

4. A valve cover lifting device for valve maintenance according to claim 3, characterized in that, The first locking block is provided with a support assembly, which includes a second screw cylinder rotatably connected to the inside of the first locking block, a third screw rod threadedly connected inside the second screw rod, a slider slidably connected inside the third screw rod, and a transmission disc fixedly connected to the top of the second screw cylinder.

5. A valve cover lifting device for valve maintenance according to claim 4, characterized in that, A stabilizing component is provided on the outside of the second screw barrel. The stabilizing component includes a second locking block rotatably connected to the outside of the second screw barrel. The bottom of the second locking block is fixedly connected to the top of the slider. A second limiting block is slidably connected inside the second locking block. A fourth rotating block is fixedly connected to the end of the second limiting block. A fourth rotating seat is rotatably connected to the outside of the fourth rotating block. The end of the fourth rotating seat is fixedly connected to the outside of the support block.

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