Valve body in-place flipping and hoisting device

Abstract

The application provides a valve body in-place overturning and hoisting device, which comprises a supporting mechanism, a hoisting mechanism, an overturning mechanism and a clamping mechanism; the hoisting mechanism is arranged on the supporting mechanism and has a lifting end capable of moving vertically; the overturning mechanism comprises a suspension frame connected with the lifting end, an overturning shaft rotatably arranged on the suspension frame, an overturning frame fixed opposite to the overturning shaft and an overturning driving assembly for driving the overturning shaft to rotate; the clamping mechanism is arranged on the overturning frame and comprises two clamping parts capable of moving close to or away from each other, for clamping the valve body to be hoisted. The overturning driving assembly can drive the overturning frame and the valve body to be hoisted to overturn in a suspended state, and limit the overturning shaft from reversely rotating after being overturned to a target position. Thus, the valve body can continuously complete hoisting, moving, suspension overturning and posture keeping, and the repeated valve body placing, re-clamping and auxiliary posture adjusting operations are reduced.

Description

Technical Field

[0001] This invention relates to the field of valve body lifting equipment technology, and specifically to a valve body in-situ tilting and lifting device. Background Technology

[0002] During the maintenance of hydro-generator units, it is usually necessary to disassemble, repair, and reinstall valves such as emergency pressure regulating valves. Due to the weight of these valves, it is difficult to move and adjust their position manually. Therefore, during the disassembly and reassembly process, it is usually necessary to use lifting equipment to lift the valves from their original installation position and adjust their position and posture as needed for maintenance or reinstallation.

[0003] In existing technologies, electric hoists, manual hoists, or other lifting equipment are typically used to lift and move valve bodies. However, the emergency pressure regulating valves in hydro-generator units are usually surrounded by numerous pipelines and other equipment, which restrict the operating space for lifting equipment and personnel. When it is necessary to adjust the installation posture of the valve body, existing lifting equipment is usually mainly used to move the valve body up, down, or horizontally, making it difficult to directly and stably rotate the valve body while it is suspended.

[0004] Therefore, in actual maintenance, it is often necessary to first lift the valve body away from its original installation position, then place the valve body on the ground or other load-bearing equipment, and change the valve body's posture by manual assistance, the coordination of multiple lifting equipment, or by readjusting the lifting points. After the posture adjustment is completed, the valve body is lifted again.

[0005] Using the above-mentioned operating method requires repeated lifting, lowering, and re-clamping of the valve body, making the valve body maintenance and reassembly process quite cumbersome. Furthermore, during the valve body's rotation and re-lifting, it is prone to swaying or displacement, increasing the possibility of collisions between the valve body and surrounding pipelines or other equipment.

[0006] Furthermore, when adjusting the valve body's attitude while it is suspended, it is necessary to reliably maintain that attitude after it reaches the desired position. If the valve body cannot be stably restrained after the attitude adjustment is completed, it may rotate unexpectedly under its own weight, thus affecting subsequent maintenance operations and the accurate alignment between the valve body and its installation position. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a valve body in-situ tilting and lifting device. To achieve the aforementioned objective, this invention employs the following technical solution: A valve body in-situ tilting and lifting device includes a support mechanism, a lifting mechanism, a tilting mechanism, and a clamping mechanism; The lifting mechanism is mounted on the support mechanism and has a lifting end capable of vertical movement; The flipping mechanism includes a suspension frame connected to the lifting end, a flipping shaft rotatably mounted on the suspension frame, a flipping frame fixed relative to the flipping shaft, and a flipping drive assembly that is drively connected to the flipping shaft. The flipping drive assembly is used to drive the flipping shaft to rotate and can restrict the flipping shaft to rotate in the opposite direction after the flipping frame rotates to the target position. The clamping mechanism is provided on the tilting frame and includes two clamping parts arranged opposite each other. A clamping space is formed between the two clamping parts for accommodating the valve body to be lifted. The two clamping parts are configured to be able to move closer to each other or further away from each other to change the size of the clamping space and clamp or release the valve body to be lifted. In the case where the valve body to be lifted is held by the two clamping parts, the valve body to be lifted can rotate around the axis of the rotating shaft while suspended by the rotating frame, and can be maintained in the target position after rotation.

[0008] Furthermore, the support mechanism includes two opposing support parts and a top crossbeam connected between the two support parts. The lifting mechanism is located on the top crossbeam and can move along the extension direction of the top crossbeam.

[0009] Furthermore, the support mechanism is constructed as a gantry, and the lifting mechanism is an electric hoist that is slidably mounted on the top crossbeam of the gantry, with the lifting end of the electric hoist forming the lifting end.

[0010] Furthermore, the tilting drive assembly includes a drive motor, a worm gear, and a worm wheel. The drive motor is mounted on the suspension frame, the worm gear is connected to the output end of the drive motor, and the worm wheel is fixed relative to the tilting shaft. The worm gear and the worm wheel mesh with each other, so that the drive motor drives the tilting frame to rotate sequentially through the worm gear, the worm wheel, and the tilting shaft.

[0011] Furthermore, the worm and worm wheel form a transmission pair with a reverse self-locking function, so that after the drive motor stops outputting driving force, the worm wheel is restricted from driving the worm in the reverse direction under the load of the tilting frame and the valve body to be lifted, thereby restricting the reverse rotation of the tilting shaft.

[0012] Furthermore, the suspension frame has shaft holes on opposite sides for the flip shaft to pass through, and a bearing is provided between the flip shaft and the suspension frame; a connecting shell connected to the suspension frame is provided on the outer side of the worm and worm wheel.

[0013] Furthermore, the clamping mechanism includes a double-ended screw rotatably mounted on the flipping frame, two opposing movable frames, and two clamping plates respectively connected to the two movable frames. The double-ended screw has two threaded sections with opposite directions of rotation, and the two movable frames are threadedly connected to the two threaded sections respectively, so that when the double-ended screw rotates, it drives the two movable frames to move closer or further away from each other, and the two movable frames respectively drive the two clamping plates to move closer or further away from each other.

[0014] Furthermore, the tilting frame is equipped with a guide rod extending parallel to the double-headed screw, and the two moving frames are slidably connected to the guide rod to restrict the movement direction of the two moving frames.

[0015] Furthermore, the double-ended screw is rotatably mounted on the tilting frame via a bearing seat, and at least one end of the double-ended screw is provided with a handwheel for driving the double-ended screw to rotate. The tilting frame is also provided with a protective shell located outside the double-ended screw and the guide rod.

[0016] Furthermore, the two clamping plates each form a clamping surface on one side facing each other for abutting against the valve body to be lifted, and at least one clamping surface is provided with a friction pad to increase the friction between the clamping plate and the valve body to be lifted.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention includes a support mechanism and a lifting mechanism capable of lateral movement relative to the support mechanism. A tilting mechanism is provided at the lifting end of the lifting mechanism, enabling the lifting mechanism to drive the tilting mechanism and the valve body to be lifted to move vertically and laterally. Simultaneously, the tilting mechanism includes a suspension frame, a tilting shaft, and a tilting frame fixed relative to the tilting shaft. The tilting shaft is driven to rotate by a tilting drive assembly, allowing the tilting frame to tilt the valve body to be lifted while suspended. This method allows the valve body to be lifted to be directly adjusted in attitude after being removed from its original installation position, eliminating the need to lower the valve body to the ground or other supporting equipment for re-clamping and tilting. This solves the technical problem in existing technologies where repeated lifting, lowering, and re-clamping of the valve body leads to cumbersome maintenance and reinstallation processes.

[0018] 2. In this invention, the tilting drive assembly includes a drive motor, a worm gear, and a worm wheel that are interconnected and driven by each other. The worm wheel is fixed relative to the tilting shaft, allowing the drive motor to drive the tilting shaft to rotate via the worm gear and worm wheel, thereby causing the tilting frame and the valve body to be lifted to tilt. Simultaneously, the worm gear and worm wheel form a transmission pair with a reverse self-locking function, preventing the tilting shaft and tilting frame from rotating in the opposite direction under the load of the valve body after it has tilted to the target position. This method ensures that the valve body can be stably maintained in the target posture after tilting, solving the technical problem in the prior art where the valve body easily rotates unexpectedly under its own gravity after posture adjustment, thus affecting subsequent maintenance and installation alignment.

[0019] 3. In this invention, the clamping mechanism is mounted on a tilting frame, and two opposing clamping plates are provided. A double-ended screw with two oppositely rotating threaded sections drives the two moving frames to move closer or further apart, enabling them to synchronously clamp or release the valve body to be lifted. Furthermore, friction pads are provided on the clamping surfaces of the clamping plates that contact the valve body to increase friction. This ensures the valve body is stably fixed on the tilting frame and completes lifting, moving, and tilting with it, reducing the possibility of slippage, swaying, or positional displacement during lifting and tilting. This solves the technical problem in the prior art where the valve body easily sways or shifts position during tilting and re-lifting, potentially colliding with surrounding pipes or other equipment. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the valve body in-situ tilting and lifting device of the present invention; Figure 2 This is a schematic diagram of the overall structure of the flipping mechanism and clamping mechanism of the present invention; Figure 3 This is a schematic diagram of the structure of the flip drive component of the present invention; Figure 4 This is a schematic diagram of the transmission structure of the clamping mechanism of the present invention.

[0021] In the attached drawings: 1. Gantry; 2. Lifting mechanism; 3. Tilting frame; 4. Tilting mechanism; 5. Clamping plate; 6. Handwheel; 7. Protective shell; 8. Connecting shell; 9. Drive motor; 10. Suspension frame; 11. Worm gear; 12. Worm wheel; 13. Tilting shaft; 14. Shaft seat; 15. Double-ended screw; 16. Guide rod; 17. Moving frame; 18. Friction pad. Detailed Implementation

[0022] To better understand the purpose, structure, and function of this invention, the following detailed description of a valve body in-situ tilting and lifting device is provided in conjunction with the accompanying drawings.

[0023] For convenience, the direction of the lifting mechanism's lifting end's vertical movement is referred to as "vertical," "up-down direction," or similar terms; the direction of the supporting mechanism's top crossbeam extension is referred to as "lateral," "horizontal," or similar terms; the movement of the lifting end from near the ground to away from the ground is referred to as "upward," or similar terms; the movement of the lifting end from away from the ground to near the ground is referred to as "downward," or similar terms; and the direction of rotation around the axis of the tilting shaft is referred to as the "tilting direction," or similar terms. The above directions and positional relationships are only used to illustrate the relative positions and movement relationships between the components and are not intended to limit the direction of actual installation and use of the invention.

[0024] like Figure 1 As shown, one embodiment of the present invention provides a valve body in-situ tilting and lifting device, including a support mechanism, a lifting mechanism 2 disposed on the support mechanism, and a tilting mechanism 4 disposed at the lifting end of the lifting mechanism 2. The lifting mechanism 2 is configured to move vertically, thereby driving the tilting mechanism 4 to move upward or downward.

[0025] At the same time, such as Figure 1 , 2 As shown, a clamping mechanism for holding the valve body to be lifted is also provided on the flipping mechanism 4. The clamping mechanism is configured to fix the valve body to be lifted relative to the flipping mechanism 4, and to allow the valve body to be lifted to move together with the flipping mechanism 4.

[0026] Among them, such as Figure 1 As shown, the tilting mechanism 4 is configured to tilt the valve body to be lifted when it is in a suspended state, thereby changing the posture of the valve body. Furthermore, after the valve body to be lifted is tilted to the target position, the tilting mechanism 4 can restrict the valve body to be lifted from rotating in the opposite direction, thereby keeping the valve body to be lifted in the target position after tilting.

[0027] In this configuration, during use, the valve body to be lifted is first fixed to the tilting mechanism 4 using the clamping mechanism. Then, the lifting mechanism 2 drives the tilting mechanism 4 and the valve body to be lifted to move upward together, causing the valve body to be lifted to move away from its original installation position or original load-bearing position. During this process, the valve body to be lifted is in a suspended state.

[0028] When the posture of the valve body to be lifted needs to be adjusted, the tilting mechanism 4 drives the valve body to tilt, gradually moving it to the desired target position. Once the valve body reaches the target position, the tilting mechanism 4 stops driving and restricts the valve body from rotating in the opposite direction. This allows the valve body to complete posture adjustment while suspended and maintain the adjusted target position without needing to be placed back on the ground or other load-bearing equipment for a second tilting.

[0029] In one embodiment, such as Figure 1 As shown, the support mechanism includes two support parts arranged opposite to each other, and a top crossbeam arranged between the two support parts. The top crossbeam extends laterally and is connected to the two support parts respectively, so that the two support parts and the top crossbeam together form a support structure for supporting the lifting mechanism 2.

[0030] Among them, such as Figure 1 As shown, the lifting mechanism 2 is mounted on the top crossbeam and is configured to move along the extension direction of the top crossbeam. In this way, on the one hand, the lifting mechanism 2 can drive the tilting mechanism 4 and the valve body to be lifted to move vertically upwards or downwards; on the other hand, the lifting mechanism 2 can also move laterally along the top crossbeam, thereby changing the horizontal position of the valve body to be lifted. This allows the valve body to be adjusted within a certain range after being lifted, facilitating its disassembly, transportation, and installation.

[0031] According to a preferred embodiment of the present invention, such as Figure 1 As shown, the support mechanism is constructed as a gantry 1. The gantry 1 includes support sections on both sides and a top crossbeam disposed above the two support sections, thereby forming a space between the two support sections for the movement of the valve body to be lifted.

[0032] At the same time, such as Figure 1 As shown, the lifting mechanism 2 is constructed as an electric hoist, which is slidably mounted on the top crossbeam of the gantry 1 and can move along the extension direction of the top crossbeam. The electric hoist has a lifting end capable of vertical movement, which forms the lifting end of the lifting mechanism 2.

[0033] In this configuration, when the lifting end of the electric hoist moves downward, it can drive the tilting mechanism 4 installed on the lifting end to gradually approach the valve body to be lifted; when the lifting end of the electric hoist moves upward, it can drive the tilting mechanism 4 and the valve body to be lifted supported by the tilting mechanism 4 to move upward together, thereby completing the lifting of the valve body to be lifted.

[0034] Simultaneously, when the electric hoist moves along the top crossbeam of the gantry 1, it can drive the suspended valve body to be lifted to move along the extension direction of the top crossbeam. In this way, the gantry 1 and the lifting mechanism 2 can jointly form a motion foundation for the valve body to be lifted to move vertically and laterally.

[0035] In one embodiment, such as Figure 2 , 3As shown, the tilting mechanism 4 includes a suspension frame 10 disposed at the lifting end of the lifting mechanism 2, and a tilting shaft 13 rotatably disposed on the suspension frame 10. The tilting shaft 13 is fixed relative to the tilting frame 3 and is used to drive the tilting frame 3 to rotate around the axis of the tilting shaft 13.

[0036] In this way, the suspension frame 10 can be used to support the tilting shaft 13 and the tilting frame 3, and the lifting force provided by the lifting mechanism 2 can be transmitted to the tilting frame 3 through the suspension frame 10. At the same time, the tilting frame 3 can rotate relative to the suspension frame 10, thus forming the basis for the tilting movement of the tilting frame 3.

[0037] In one embodiment, such as Figure 2 As shown, shaft holes for the rotating shaft 13 to pass through are respectively provided on opposite sides of the suspension frame 10. The rotating shaft 13 passes through the shaft holes and can rotate relative to the suspension frame 10. At the same time, a bearing is also provided between the rotating shaft 13 and the suspension frame 10.

[0038] In this configuration, the bearing supports the tilting shaft 13, ensuring its stable placement on the suspension frame 10. Simultaneously, the bearing reduces the rotational resistance between the tilting shaft 13 and the suspension frame 10, allowing the tilting shaft 13 to rotate more stably around its own axis. The tilting frame 3 is relatively fixed to the tilting shaft 13. When the tilting shaft 13 rotates around its own axis, it drives the tilting frame 3 to rotate synchronously around the tilting shaft 13. In this way, the suspension frame 10 forms the suspension foundation for the tilting frame 3, while the tilting shaft 13 forms the rotational foundation for the tilting frame 3's tilting motion.

[0039] In one embodiment, such as Figure 2 , 3 As shown, the flipping mechanism 4 also includes a flipping drive assembly for driving the flipping shaft 13 to rotate. The flipping drive assembly is connected to the flipping shaft 13 in a transmission manner and is used to apply a rotational force to the flipping shaft 13.

[0040] In this embodiment, as Figure 3 As shown, the tilting drive assembly includes a drive motor 9 mounted on the suspension frame 10 and a worm gear 11 connected to the output end of the drive motor 9. A worm wheel 12, fixed relative to the tilting shaft 13, is mounted on the tilting shaft 13, and the worm wheel 12 meshes with the worm gear 11.

[0041] In this way, when the drive motor 9 starts, the output end of the drive motor 9 can drive the worm 11 to rotate around its own axis. During this process, the worm 11 can apply a rotational force to the worm wheel 12 through the meshing action between the worm 11 and the worm wheel 12, causing the worm wheel 12 to rotate around the axis of the rotating shaft 13.

[0042] Since the worm gear 12 is fixed relative to the tilting shaft 13, the worm gear 12 can drive the tilting shaft 13 to rotate synchronously, and further drive the tilting frame 3 to tilt through the tilting shaft 13. In this configuration, the force output by the drive motor 9 can be transmitted to the tilting frame 3 in sequence through the worm 11, worm gear 12 and tilting shaft 13, thereby driving the tilting frame 3 to rotate relative to the suspension frame 10.

[0043] When the valve body to be lifted is fixed on the tilting frame 3 by the clamping mechanism, the tilting frame 3 can also drive the valve body to be lifted to rotate around the axis of the tilting shaft 13. This allows the valve body to be lifted to adjust its posture while suspended.

[0044] According to a preferred embodiment of the present invention, such as Figure 3 As shown, the worm 11 and worm wheel 12 form a transmission pair capable of creating a reverse self-locking effect. Specifically, the drive motor 9 can actively drive the worm wheel 12 to rotate through the worm 11. However, after the drive motor 9 stops outputting force, when the load of the tilting frame 3 and the valve body to be lifted acts on the tilting shaft 13 and the worm wheel 12, the worm wheel 12 cannot drive the worm 11 to continue rotating in the reverse direction under the action of the load.

[0045] In this way, once the valve body to be lifted has rotated to the desired target position, the drive motor 9 stops working. At this time, the reverse self-locking action formed between the worm 11 and the worm wheel 12 can restrict the reverse rotation of the worm wheel 12, thereby further restricting the reverse movement of the tilting shaft 13 and the tilting frame 3.

[0046] This allows the tilting frame 3 to remain in the target position after tilting, and further keeps the valve body to be lifted supported by the tilting frame 3 in the corresponding posture, preventing the valve body to be lifted from causing the tilting frame 3 to rotate unexpectedly due to its own weight.

[0047] It should be noted that, in this embodiment, the transmission parameters between the worm gear 11 and the worm wheel 12 are set to achieve reverse self-locking. The specific dimensional parameters can be adaptively selected according to the weight of the valve body to be lifted, the size of the tilting frame 3, and the required tilting speed, and are not specifically limited here.

[0048] In one embodiment, such as Figure 2As shown, a connecting shell 8 is also provided on the outer side of the worm 11 and worm wheel 12. The connecting shell 8 is connected to the suspension frame 10 and is used to at least partially surround the worm 11 and worm wheel 12. In this way, the connecting shell 8 can isolate the transmission area formed by the worm 11 and worm wheel 12 from the external environment. On the one hand, it can prevent external debris from entering between the worm 11 and worm wheel 12 and affecting their normal meshing; on the other hand, it can also prevent personnel or external equipment from directly contacting the worm 11 and worm wheel 12 in motion.

[0049] In one embodiment, such as Figure 2 As shown, a clamping mechanism is provided on the tilting frame 3. The clamping mechanism includes two clamping plates 5 arranged opposite each other, forming a clamping space between the two clamping plates 5 for accommodating the valve body to be lifted. The two clamping plates 5 are configured to be able to move closer to each other or further apart.

[0050] In this way, as the two clamping plates 5 move away from each other, the clamping space between them gradually increases, allowing the valve body to be lifted to enter the clamping space. When the two clamping plates 5 move closer together, they contact the opposite sides of the valve body to be lifted and gradually apply a clamping force, thus fixing the valve body relative to the tilting frame 3. With this configuration, by changing the distance between the two clamping plates 5, not only can the clamping and releasing of the valve body be achieved, but the clamping mechanism can also adapt to valve bodies with different external dimensions.

[0051] In one embodiment, such as Figure 4 As shown, the clamping mechanism further includes a double-ended screw 15 rotatably mounted on the flipping frame 3, and two movable frames 17 mounted on the double-ended screw 15. The double-ended screw 15 extends along the direction in which the two clamping plates 5 approach or move away from each other, and has two threaded segments with opposite directions of rotation. The two movable frames 17 are threadedly connected to the two threaded segments on the double-ended screw 15, respectively. Simultaneously, the two clamping plates 5 are connected to the two movable frames 17, respectively.

[0052] In this configuration, such as Figure 4 As shown, when the double-ended screw 15 rotates in one direction, since the two threaded sections of the double-ended screw 15 have opposite directions of rotation, the two moving frames 17 can approach each other along the extension direction of the double-ended screw 15. During this process, the two moving frames 17 will respectively drive the two clamping plates 5 to approach each other, thereby gradually reducing the clamping space between the two clamping plates 5 until the two clamping plates 5 respectively abut against the valve body to be lifted and form a clamp on the valve body to be lifted.

[0053] When the double-ended screw 15 rotates in opposite directions, the two moving frames 17 will move away from each other along the extension direction of the double-ended screw 15, and will respectively drive the two clamping plates 5 to move away from each other, thereby gradually increasing the clamping space between the two clamping plates 5, so that the clamping plates 5 are separated from the valve body to be lifted. This completes the release of the valve body to be lifted. In this way, by simply driving the double-ended screw 15 to rotate, the two clamping plates 5 can be moved closer or further apart synchronously, thus facilitating the clamping and release of the valve body to be lifted.

[0054] In one embodiment, such as Figure 4 As shown, a guide rod 16 extending parallel to the double-ended screw 15 is also provided on the tilting frame 3. Two movable frames 17 are respectively sleeved or slidably mounted on the guide rod 16 and can move along the extension direction of the guide rod 16. In this way, when the double-ended screw 15 rotates, the guide rod 16 can restrict the movable frames 17 to rotate synchronously around the axis of the double-ended screw 15, so that the two movable frames 17 can only move in a straight line along the extension direction of the guide rod 16.

[0055] Thus, the double-headed screw 15 can be used to provide forces to the two moving frames 17 to move closer or further apart, while the guide rod 16 can be used to guide the movement direction of the two moving frames 17, so that the two moving frames 17 can more stably drive the two clamping plates 5 to move relative to each other.

[0056] According to a preferred embodiment of the present invention, such as Figure 4 As shown, the guide rods 16 are configured as two rods, respectively positioned on both sides of the double-ended screw 15. In this configuration, the two guide rods 16 can jointly guide the moving frame 17 from both sides of the double-ended screw 15, thereby further improving the stability of the moving frame 17 during movement and reducing the possibility of the moving frame 17 deflecting or tilting during movement.

[0057] In one embodiment, such as Figure 4 As shown, the double-ended screw 15 is rotatably mounted on the tilting frame 3 via a bearing 14. The bearing 14 is mounted on the tilting frame 3 and serves to support the double-ended screw 15, allowing it to rotate relative to the tilting frame 3 around its own axis. This method serves two purposes: firstly, it limits the position of the double-ended screw 15, preventing large positional deviations when driving the two moving frames 17; secondly, it ensures a stable rotation of the double-ended screw 15, allowing the two moving frames 17 to stably move closer or further apart.

[0058] In one embodiment, such as Figure 4As shown, a handwheel 6 for driving the double-ended screw 15 to rotate is provided at at least one end of the double-ended screw 15. In this embodiment, the handwheel 6 is provided at the end of the double-ended screw 15 and is fixed relative to the double-ended screw 15.

[0059] In this way, when it is necessary to clamp the valve body to be lifted, the operator can apply a rotational force to the handwheel 6, causing the handwheel 6 to drive the double-ended screw 15 to rotate synchronously, and further causing the two moving frames 17 to bring the two clamping plates 5 closer together. When it is necessary to release the valve body to be lifted, the operator can rotate the handwheel 6 in the opposite direction, causing the double-ended screw 15 to rotate in the opposite direction, and causing the two moving frames 17 and the two clamping plates 5 to move away from each other.

[0060] According to a preferred embodiment of the present invention, such as Figure 4 As shown, handwheels 6 are provided at both ends of the double-ended screw 15. In this way, the operator can operate the double-ended screw 15 from either side of the tilting frame 3 according to the actual working space, which facilitates the adjustment of the clamping mechanism in a relatively narrow working area.

[0061] In one embodiment, such as Figure 4 As shown, a protective shell 7 is also provided on the flipping frame 3. The protective shell 7 is located outside the double-ended screw 15, the guide rod 16, and at least part of the movable frame 17. In this way, the protective shell 7 can at least partially isolate the movement area of ​​the clamping mechanism from the external environment, thereby reducing the possibility of external debris adhering to or entangled on the double-ended screw 15 and the guide rod 16, and reducing the possibility of external objects entering the movement area of ​​the two movable frames 17 and affecting the normal operation of the clamping mechanism.

[0062] In one embodiment, such as Figure 4 As shown, the two clamping plates 5 each form a clamping surface on one side facing each other, for contacting the valve body to be lifted. A friction pad 18 is provided on at least the clamping surface. In this embodiment, the friction pad 18 may be made of a material with certain elasticity and frictional properties, and is provided on the side of the clamping plate 5 that contacts the valve body to be lifted.

[0063] In this way, when the two clamping plates 5 approach each other and apply clamping force to the valve body to be lifted, the friction pad 18 can come into contact with the outer surface of the valve body to be lifted, thereby increasing the friction between the two clamping plates 5 and the valve body to be lifted.

[0064] In this configuration, when the valve body to be lifted is lifted, moved laterally, or flipped by the tilting frame 3, the friction pad 18 can reduce the possibility of the valve body sliding relative to the clamping plate 5. At the same time, since the friction pad 18 is located between the clamping plate 5 and the valve body to be lifted, it can also reduce the direct rigid contact between the clamping plate 5 and the valve body to be lifted, thereby reducing the possibility of bumps or scratches to the outer surface of the valve body to be lifted during the clamping process.

[0065] According to a preferred embodiment of the present invention, the valve body in-situ tilting and lifting device of the present invention can be used for the disassembly, maintenance, and reassembly of the emergency pressure regulating valve of a hydro-generator unit. In this application scenario, because the emergency pressure regulating valve has a large weight and is usually surrounded by many pipelines and other hydraulic equipment, the space available for workers and lifting equipment to operate is relatively limited.

[0066] The valve body in-situ flipping and lifting device of the present invention can directly flip the emergency pressure regulating valve after it has been lifted away from its original installation position, without having to place the emergency pressure regulating valve on the ground or other load-bearing equipment for flipping. This reduces the need for repeated lifting and re-clamping operations during the disassembly, assembly and maintenance of the emergency pressure regulating valve.

[0067] The specific operation method of the valve body in-situ tilting and lifting device according to the present invention is as follows.

[0068] First, move or position the support mechanism in the work area where the valve body to be lifted is located, and position the valve body between the two support parts of the support mechanism. Then, move the lifting mechanism 2 along the top crossbeam of the support mechanism, thereby driving the tilting mechanism 4 to move laterally until the tilting frame 3 moves above the valve body to be lifted. Subsequently, move the lifting end of the lifting mechanism 2 downward.

[0069] At this time, the lifting end will drive the suspension frame 10, the tilting shaft 13, and the tilting frame 3 to move downwards synchronously, so that the tilting frame 3 gradually approaches the valve body to be lifted. Before or during the downward movement of the tilting frame 3, the distance between the two clamping plates 5 can be adjusted by the handwheel 6, so that the two clamping plates 5 are far apart from each other, and the clamping space formed between the two clamping plates 5 is larger than the size of the valve body to be lifted at the corresponding clamping position.

[0070] After the tilting frame 3 moves to the position of the valve body to be lifted, the valve body is at least partially located in the clamping space formed between the two clamping plates 5. Next, a rotational force is applied to the handwheel 6, causing the handwheel 6 to drive the double-ended screw 15 to rotate. At this time, since the two moving frames 17 are respectively threaded to the two threaded sections with opposite directions of rotation on the double-ended screw 15, the double-ended screw 15 will drive the two moving frames 17 to move closer to each other along the guide rod 16.

[0071] During this process, the two movable frames 17 drive the two clamping plates 5 to move closer together, causing the friction pads 18 on the two clamping plates 5 to gradually approach the valve body to be lifted, until the two friction pads 18 abut against the opposite sides of the valve body to be lifted. A rotational force is then applied to the handwheel 6, causing the two clamping plates 5 to apply a clamping force to the valve body to be lifted. This fixes the valve body to be lifted relative to the tilting frame 3, thus completing the clamping of the valve body to be lifted.

[0072] Next, the lifting end of the lifting mechanism 2 is moved upward. During this process, the lifting mechanism 2 will apply an upward lifting force to the tilting mechanism 4 through the suspension frame 10, and the suspension frame 10 will drive the tilting frame 3 and the valve body to be lifted held by the clamping plate 5 to move upward synchronously through the tilting shaft 13. As the valve body to be lifted continues to move upward, the valve body will gradually leave its original installation position or original load-bearing position, thus being in a suspended state.

[0073] When it is necessary to adjust the posture of the valve body to be lifted, the drive motor 9 is started. At this time, the output end of the drive motor 9 will drive the worm 11 to rotate around its own axis, and the worm 11 will further drive the worm wheel 12 to rotate through the meshing action between the worm 11 and the worm wheel 12. Since the worm wheel 12 is relatively fixed to the tilting shaft 13, the worm wheel 12 will drive the tilting shaft 13 to rotate synchronously, and cause the tilting shaft 13 to drive the tilting frame 3 to rotate around the axis of the tilting shaft 13.

[0074] During this process, since the valve body to be lifted is fixed to the tilting frame 3 by the two clamps 5, the valve body to be lifted will tilt together with the tilting frame 3, thereby gradually changing the posture of the valve body to be lifted. When the valve body to be lifted has tilted to the desired target position, the drive motor 9 is stopped.

[0075] At this time, the reverse self-locking action formed between the worm 11 and the worm wheel 12 can restrict the worm wheel 12 from rotating in the opposite direction under the load of the tilting frame 3 and the valve body to be lifted, thereby restricting the reverse movement of the tilting shaft 13 and the tilting frame 3. As a result, the valve body to be lifted can be kept in the target position after tilting.

[0076] In this configuration, the attitude adjustment of the valve body to be lifted can be completed directly while it remains suspended, and the position of the valve body can be maintained after the attitude adjustment is completed. Therefore, there is no need to place the valve body on the ground and then disassemble the lifting equipment or use other equipment for assisted tilting. Then, according to the needs of subsequent maintenance, transportation, or installation of the valve body, the lifting mechanism 2 moves along the top crossbeam of the support mechanism, thereby driving the valve body to be lifted laterally. Simultaneously, the vertical position of the valve body can be further adjusted by moving the lifting end of the lifting mechanism 2 upwards or downwards.

[0077] In this way, the lateral and vertical movements provided by the lifting mechanism 2 can be coordinated with the tilting movement provided by the tilting mechanism 4, thereby adjusting the position and posture of the valve body to be lifted, so that the valve body to be lifted can be moved to the required maintenance or installation position.

[0078] When it is necessary to reinstall the valve body to be lifted, the tilting frame 3 can be driven by the drive motor 9 to adjust the valve body to the posture corresponding to the installation position. After the valve body to be lifted has moved to the required posture, the drive motor 9 is stopped, and the reverse self-locking action formed between the worm gear 11 and the worm wheel 12 prevents the valve body to be lifted from overturning unexpectedly.

[0079] Then, the position of the valve body to be lifted is gradually adjusted by the movement of the lifting mechanism 2 along the top crossbeam and the up-and-down movement of the lifting end, so that the valve body to be lifted is aligned with the corresponding installation position, and the installation of the valve body to be lifted is completed. After the installation of the valve body to be lifted is completed, or after the valve body to be lifted has been stably supported by other load-bearing structures, the handwheel 6 is turned in the opposite direction to when the valve body to be lifted was clamped.

[0080] At this time, the handwheel 6 will drive the double-ended screw 15 to rotate in the opposite direction, and cause the two moving frames 17 to move away from each other along the guide rod 16. During this process, the two moving frames 17 will drive the two clamping plates 5 to move away from each other, so that the friction pads 18 on the clamping plates 5 are separated from the valve body to be lifted. Thus, the clamping mechanism is released from clamping the valve body to be lifted.

[0081] Finally, the lifting end of the lifting mechanism 2 moves upward, causing the tilting frame 3 to move away from the valve body to be lifted, thus completing one clamping, lifting, tilting, and transfer operation of the valve body to be lifted. In this configuration, the support mechanism and the lifting mechanism 2 can vertically lift and laterally move the valve body to be lifted; the two clamping plates 5, which can move closer or further apart from each other, can fix the valve body to be lifted relative to the tilting frame 3; the drive motor 9, worm gear 11, worm wheel 12, and tilting shaft 13 can drive the tilting frame 3 and the valve body to be lifted to tilt in a suspended state; and the reverse self-locking action formed by the worm gear 11 and worm wheel 12 can restrict the reverse rotation of the valve body after it has moved to the target position.

[0082] This allows the valve body to be lifted to be clamped, lifted, suspended and rotated, held in position and adjusted in a continuous manner on the same device, without having to repeatedly put the valve body to be lifted down and re-lift and clamp it during the rotation process.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A valve body in-situ tilting and lifting device, characterized in that, It includes a support mechanism, a lifting mechanism (2), a tilting mechanism (4), and a clamping mechanism; The lifting mechanism (2) is installed on the support mechanism and has a lifting end that can move vertically; The flipping mechanism (4) includes a suspension frame (10) connected to the lifting end, a flipping shaft (13) rotatably disposed on the suspension frame (10), a flipping frame (3) fixed relative to the flipping shaft (13), and a flipping drive assembly that is drivenly connected to the flipping shaft (13). The flipping drive assembly is used to drive the flipping shaft (13) to rotate and can restrict the flipping shaft (13) to rotate in the opposite direction after the flipping frame (3) rotates to the target position. The clamping mechanism is provided on the flipping frame (3) and includes two clamping parts arranged opposite to each other. A clamping space is formed between the two clamping parts for accommodating the valve body to be lifted. The two clamping parts are configured to be able to move closer to each other or further away from each other to change the size of the clamping space and clamp or release the valve body to be lifted. In the state where the valve body to be lifted is held by the two clamping parts, the valve body to be lifted can be rotated around the axis of the rotating shaft (13) in the suspended state with the rotating frame (3), and can be kept in the target position after rotation.

2. The valve body in-situ tilting and lifting device according to claim 1, characterized in that, The support mechanism includes two support parts arranged opposite each other and a top crossbeam connected between the two support parts. The lifting mechanism (2) is located on the top crossbeam and can move along the extension direction of the top crossbeam.

3. The valve body in-situ tilting and lifting device according to claim 2, characterized in that, The support mechanism is constructed as a gantry (1), and the lifting mechanism (2) is an electric hoist that is slidably installed on the top crossbeam of the gantry (1). The lifting end of the electric hoist forms the lifting end.

4. The valve body in-situ tilting and lifting device according to claim 1, characterized in that, The flip drive assembly includes a drive motor (9), a worm (11), and a worm wheel (12). The drive motor (9) is mounted on the suspension frame (10). The worm (11) is connected to the output end of the drive motor (9). The worm wheel (12) is fixed relative to the flip shaft (13), and the worm (11) and the worm wheel (12) mesh with each other so that the drive motor (9) drives the flip frame (3) to rotate in sequence through the worm (11), the worm wheel (12), and the flip shaft (13).

5. The valve body in-situ tilting and lifting device according to claim 4, characterized in that, The worm (11) and worm wheel (12) form a transmission pair with a reverse self-locking function, so that after the drive motor (9) stops outputting driving force, the worm wheel (12) is restricted from driving the worm (11) in the reverse direction under the load of the tilting frame (3) and the valve body to be lifted, thereby restricting the tilting shaft (13) from rotating in the reverse direction.

6. The valve body in-situ tilting and lifting device according to claim 4, characterized in that, The suspension frame (10) has shaft holes on its opposite sides for the flip shaft (13) to pass through. A bearing is provided between the flip shaft (13) and the suspension frame (10). A connecting shell (8) connected to the suspension frame (10) is provided on the outside of the worm (11) and the worm wheel (12).

7. The valve body in-situ tilting and lifting device according to claim 1, characterized in that, The clamping mechanism includes a double-ended screw (15) rotatably mounted on the flipping frame (3), two opposing movable frames (17), and two clamping plates (5) respectively connected to the two movable frames (17). The double-ended screw (15) has two threaded sections with opposite directions of rotation. The two movable frames (17) are respectively threadedly connected to the two threaded sections so that when the double-ended screw (15) rotates, it drives the two movable frames (17) to move closer to each other or further away from each other, and the two movable frames (17) respectively drive the two clamping plates (5) to move closer to each other or further away from each other.

8. The valve body in-situ tilting and lifting device according to claim 7, characterized in that, The flipping frame (3) is provided with a guide rod (16) extending parallel to the double-headed screw (15). The two moving frames (17) are slidably connected to the guide rod (16) respectively, so as to restrict the movement direction of the two moving frames (17) through the guide rod (16).

9. The valve body in-situ tilting and lifting device according to claim 7, characterized in that, The double-ended screw (15) is rotatably mounted on the flipping frame (3) via the bearing seat (14). At least one end of the double-ended screw (15) is provided with a handwheel (6) for driving the double-ended screw (15) to rotate. The flipping frame (3) is also provided with a protective shell (7) located outside the double-ended screw (15) and the guide rod (16).

10. The valve body in-situ tilting and lifting device according to claim 7, characterized in that, The two clamping plates (5) form clamping surfaces on opposite sides for contact with the valve body to be lifted. At least one clamping surface is provided with a friction pad (18) to increase the friction between the clamping plate (5) and the valve body to be lifted.

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