Mechanical device for adjusting height of generator

Abstract

The invention belongs to the technical field of generators, and particularly discloses a mechanical device for adjusting the height of a generator, the mechanical device comprises a bottom plate, a lifting plate for connecting the generator is arranged above the bottom plate, and a lifting mechanism and a damping locking mechanism are arranged between the bottom plate and the lifting plate; the lifting mechanism is used for driving the lifting plate to ascend and descend in the vertical direction. The damping locking mechanism is used for providing one-way damping and locking descending movement when the lifting plate ascends, and descending buffering can be provided when locking is unlocked. According to the device, the position of the generator can be conveniently lifted, and the stability in the lifting process is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of generator technology, and more specifically to a mechanical device for adjusting the height of a generator. Background Technology

[0002] A generator is a mechanical device that converts mechanical energy into electrical energy. It is driven by a water turbine, steam turbine, diesel engine or other power machinery, converting the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy, which is then transferred to the generator and converted into electrical energy. It is widely used in emergency rescue, field construction and disaster relief work.

[0003] Normally, once a generator is placed in a suitable location, it will not be moved frequently to avoid affecting its stability and power generation efficiency. However, during generator maintenance or disaster relief operations, it is often necessary to raise the generator to facilitate maintenance or avoid water erosion. Therefore, we provide a mechanical device for adjusting the height of the generator to solve the above problems. Summary of the Invention

[0004] This invention provides a mechanical device for adjusting the height of a generator, which aims to facilitate the lifting of the generator while ensuring stability during the lifting process.

[0005] The present invention is achieved through the following technical solution: a mechanical device for adjusting the height of a generator, comprising a base plate, a lifting plate for connecting the generator being provided above the base plate, and a lifting mechanism and a damping locking mechanism being provided between the base plate and the lifting plate; The lifting mechanism is used to drive the lifting plate to move up and down in the vertical direction; The damping locking mechanism is used to provide unidirectional damping and lock the downward movement when the lifting plate rises, and can provide a downward buffer when the lock is released.

[0006] Compared with existing technologies, this solution has the following advantages and beneficial effects: The lifting mechanism in this solution can drive the lifting plate to move up and down precisely in the vertical direction, enabling rapid adjustment of the generator height. This meets the operational space requirements during generator maintenance and the position adjustment requirements in disaster relief scenarios to avoid harsh environments such as water erosion.

[0007] The damping locking mechanism in this design provides unidirectional damping and locking during the descent of the lifting platform, ensuring stability and safety during the lifting process. On one hand, unidirectional damping slows the platform's ascent, preventing equipment swaying or component impact caused by excessively rapid ascent. On the other hand, locking during descent eliminates the risk of the platform suddenly falling due to the generator's excessive weight causing the lifting mechanism to malfunction. This provides dual safety protection for the generator at high altitudes, safeguarding the equipment and surrounding personnel. When the damping locking mechanism is released, it provides a descent buffer function, allowing the lifting platform to slowly and smoothly lower the generator. This prevents excessive inertia from rapid descent, which could loosen or damage the connection between the generator and the lifting platform, or impact the base plate and underlying structure, thus extending the overall lifespan of the device and the generator.

[0008] Furthermore, the lifting mechanism includes a bidirectional threaded rod and a driving component. The two ends of the bidirectional threaded rod are rotatably connected to the two ends of the lifting plate, respectively. A driving block is threadedly connected to the threaded portion of the bidirectional threaded rod. A first connecting rod is hinged to the bottom surface of the driving block. The other end of the first connecting rod is hinged to the upper surface of the base plate. The two first connecting rods are arranged in a cross configuration. The driving component is used to drive the bidirectional threaded rod to rotate.

[0009] Beneficial effects: The double-section reverse thread structure of the bidirectional threaded rod can drive the drive blocks at both ends to move closer or further apart synchronously along the axial direction. Combined with the linkage effect of the cross-set first connecting rod, the horizontal displacement of the drive block can be accurately converted into the vertical lifting displacement of the lifting plate, realizing the stable and precise adjustment of the generator height. This avoids the lifting plate from tilting or jamming on one side, ensuring that the generator always maintains a horizontal posture during the lifting process and preventing damage to internal precision components due to posture deviation.

[0010] Furthermore, there are two bidirectional threaded rods, which are symmetrically arranged on both sides of the lifting plate, and the thread patterns of the two bidirectional threaded rods are consistent; the driving component includes a driving sprocket, a chain, and a driven sprocket; the driving sprocket is rotatably connected to the lifting plate, and there are two driven sprockets, which are fixedly connected to one end of the two bidirectional threaded rods respectively, and the driving sprocket is driven by the chain to the driven sprocket at one end of the two bidirectional threaded rods.

[0011] Beneficial effects: In this solution, two bidirectional threaded rods are symmetrically arranged on both sides of the lifting plate with consistent thread patterns. Combined with the transmission structure that drives the two driven sprockets synchronously through the chain, it can ensure that the two bidirectional threaded rods rotate in the same direction and at the same speed, thereby driving the two drive blocks to move closer or further away synchronously and with the same amplitude.

[0012] In addition, this solution only requires one set of driving components to simultaneously drive two bidirectional threaded rods to rotate, thereby driving the rotation of the first connecting rods on both sides of the lifting plate to change the height position, thus realizing the synchronous lifting and lowering action of the first connecting rods on both sides of the lifting plate and ensuring the smooth lifting and lowering action of the lifting plate.

[0013] Furthermore, the diameter of the drive sprocket is larger than the diameter of the two driven sprockets.

[0014] Beneficial effect: This setup requires less effort when rotating the drive sprocket.

[0015] Furthermore, a Z-shaped drive handle is fixedly connected to the drive sprocket, and the grip portion of the drive handle is provided with a bearing-type sleeve.

[0016] Beneficial effects: The design of the drive handle makes it easier for the operator to grip and apply force to rotate the drive sprocket. The bearing-type sleeve on the handle reduces the friction between the operator's hand and the drive handle when rotating the drive sprocket, thus facilitating the operation of the drive sprocket.

[0017] Furthermore, the damping locking mechanism includes a hollow sleeve fixed to the base plate, a sliding flow restrictor slidably disposed in the hollow sleeve, an external movable rod fixedly connected to the sliding flow restrictor, and a second connecting rod hinged to the bottom surface of the lifting plate; The external movable rod passes through the hollow sleeve and slides axially with the hollow sleeve. The outer surface of one end of the external movable rod extending out of the hollow sleeve is connected to a movable block that can slide on the base plate. The end of the second connecting rod away from the lifting plate is hinged to the movable block. The sliding flow restrictor has a flow restrictor hole, and the external movable rod is also fitted with an internal movable rod and an elastic reset member. One end of the internal movable rod passes through the sliding flow restrictor and is connected to a one-way sealing member that is adapted to the flow restrictor hole on the sliding flow restrictor. The elastic reset member is used to make the one-way sealing member cover the flow restrictor hole in the normal state. Rotating the internal movable rod can release the one-way sealing member from covering the flow restrictor hole.

[0018] Beneficial effects: When the lifting plate rises in this solution, it will pull the external movable rod through the second connecting rod to move the sliding flow limiting plug out of the hollow sleeve. At this time, the liquid on one side of the sliding flow limiting plug in the hollow sleeve is squeezed, which will overcome the pulling force of the elastic reset component, push open the one-way sealing component, and flow to the other side through the flow limiting hole.

[0019] The throttling characteristic of the flow-limiting orifice can form unidirectional damping, slowing down the rising rate of the lifting plate and preventing equipment shaking caused by excessively rapid rising. The reset force of the elastic reset component will cause the unidirectional sealing component to cover the flow-limiting orifice under normal conditions. When the lifting plate stops rising, the unidirectional sealing component can block the reverse flow of liquid, thereby locking the reverse displacement of the sliding flow-limiting plug and achieving rigid locking of the lowering motion of the lifting plate. This completely eliminates the safety hazard of the lifting mechanism failing due to excessive generator weight and the lifting plate suddenly falling.

[0020] When it is necessary to lower the lifting plate, the one-way sealing component covering the flow-limiting orifice can be removed by rotating the built-in movable rod. At this time, the liquid in the hollow sleeve can flow through the flow-limiting orifice in both directions. When the sliding flow-limiting plug moves in the opposite direction with the external movable rod, the throttling effect of the liquid will form a smooth buffer, causing the lifting plate to drive the generator to fall slowly. This avoids the inertial impact caused by excessive descent speed, prevents the connecting bolts between the generator and the lifting plate from loosening, and prevents damage to the base plate and lifting mechanism components, effectively extending the service life of the entire device and the generator.

[0021] The damping locking mechanism in this solution adopts a purely mechanical structure design without complex electronic control components. It can adapt to harsh working conditions such as emergency rescue and field construction, and has high reliability in the face of vibration and dust. At the same time, the unlocking operation can be completed simply by rotating the built-in movable rod, without the need for additional power or tools. The operation process is simple and can quickly switch between the locking and buffer descent states, improving the response efficiency of the device in emergency scenarios.

[0022] In this solution, the damping locking mechanism and the lifting mechanism form a dual safety guarantee. The threaded drive of the lifting mechanism has basic self-locking capability, while the damping locking mechanism strengthens the fall protection from the perspective of fluid damping. The synergistic effect of the two can greatly improve the safety redundancy of the device. Even if the lifting mechanism has a minor fault such as thread stripping, the damping locking mechanism can still firmly lock the position of the lifting plate, ensuring the safety of the equipment and operators.

[0023] Furthermore, the one-way sealing component is a rotating block, and a protrusion is connected to the outside of the rotating block. The protrusion of the rotating block matches the flow-limiting hole on the sliding flow-limiting plug.

[0024] Beneficial effects: The shape and size of the protrusion of the rotating block match the flow-limiting hole. Under normal conditions, with the action of the elastic reset component, the protrusion can completely cover the flow-limiting hole, forming a seal. This can completely block the reverse flow of liquid in the hollow sleeve, ensuring that the damping locking mechanism has a stable and reliable locking effect on the downward movement after the lifting plate stops rising. This eliminates the hidden dangers of liquid leakage and slow descent of the lifting plate caused by the sealing gap. When the lifting plate rises and the liquid on the sliding flow-limiting plug side forms high pressure, the high-pressure liquid can accurately push open the rotating block, separating the protrusion from the flow-limiting hole, providing a directional flow channel for the liquid, and ensuring the stable realization of the unidirectional damping function during the rising phase.

[0025] The rotating block's structural characteristics allow for rapid misalignment of the protrusion and the flow-limiting orifice by rotating the built-in movable rod. Operators only need to apply a small rotational torque to the built-in movable rod to release the protrusion from the flow-limiting orifice, completing the switch from the locked to the buffered descent state. Compared to other sealing structures, the rotary unlocking method has a short stroke, precise operation, and eliminates the need for complex pushing and pulling actions. It can respond quickly in emergency scenarios, improving the device's operational flexibility and emergency adaptability.

[0026] Furthermore, a slip ring is rotatably connected to the end of the built-in movable rod away from the one-way sealing member. The slip ring is located inside the external movable rod and slides axially with the external movable rod. The elastic reset member is a tension spring disposed inside the external movable rod, and the two ends of the tension spring are fixedly connected to the external movable rod and the slip ring, respectively. An L-shaped handle is also fixedly connected to the built-in movable rod. The end of the L-shaped handle away from the built-in movable rod extends to the outside of the external movable rod and slides slidably with the external movable rod.

[0027] Beneficial effects: In this design, the two ends of the tension spring are connected to the external movable rod and the slip ring, respectively, and the slip ring is rotatably connected to the internal movable rod. This connection method can provide a continuous and stable reset force for the internal movable rod and the rotating block, ensuring that the protrusion of the rotating block accurately fits and seals the flow-limiting hole of the sliding flow-limiting plug under normal conditions, thus ensuring the reliability of the descent locking. At the same time, the rotational characteristics of the slip ring can eliminate the torsional interference of the tension spring when the internal movable rod rotates, avoiding the failure of the spring due to torsional deformation. It also ensures that the reset force always acts on the rotating block axially, preventing problems such as sealing offset and poor sealing.

[0028] The L-shaped handle on the external movable rod provides operators with a convenient fulcrum for applying force. The built-in movable rod can be manually rotated without additional tools to quickly unlock the rotating block protrusion and flow-limiting orifice. Simultaneously, the lever structure of the L-shaped handle amplifies the operating torque, reducing the force required for unlocking. Even in complex conditions such as field construction and emergency rescue, it can easily switch between locking and buffered descent states, significantly improving the device's emergency response efficiency and human-machine interface.

[0029] The sliding fit between the L-shaped handle and the external movable rod allows the internal movable rod to move axially with the external movable rod, ensuring that the L-shaped handle can always operate normally without motion interference during the entire process of lifting the lifting plate and extending or retracting the external movable rod. In addition, the tension spring is sleeved on the outside of the internal movable rod, which can achieve radial limiting with the help of the internal movable rod, preventing the spring from bending or shifting during repeated extension and retraction, extending the service life of the elastic reset component, and ensuring the long-term stability of the damping locking mechanism.

[0030] In addition, in this solution, the axial reset force of the tension spring and the rotational unlocking force of the L-shaped handle are independent forces, and their transmission paths do not overlap: the tension spring is only responsible for the axial reset and engagement of the rotating block, and the L-shaped handle is only responsible for the circumferential unlocking of the rotating block. The two actions do not interfere with each other, which ensures the reliability of the sealing under normal conditions and the precision and controllability of the unlocking operation, avoiding the situation where the reset force affects the unlocking or the unlocking action damages the reset structure.

[0031] Furthermore, sealing rings are provided on the portion of the hollow sleeve that makes sliding contact with the external movable rod, and on the portion of the external movable rod that makes sliding contact with the L-shaped handle.

[0032] Beneficial effects: In this solution, the damping fluid filled inside the hollow sleeve is the core medium for achieving unidirectional damping and buffering functions. The sealing ring can form a reliable seal at the sliding gap between the hollow sleeve and the external movable rod, preventing leakage of the damping fluid. At the same time, the sealing ring at the sliding contact point between the external movable rod and the L-shaped handle can prevent external dust, mud, and other impurities from entering the interior of the external movable rod, avoiding contamination of the damping fluid or jamming of the internal movable rod, tension spring, and other components. This ensures the stability of the damping fluid's performance and maintains the unidirectional damping and buffering effect of the damping locking mechanism.

[0033] Furthermore, both the base plate and the lifting plate have frame-type reinforcing ribs on their bottom surfaces, and the bottom surface of the lifting plate is also fixedly connected with multiple pads for supporting the lifting plate.

[0034] Beneficial effects: The frame-type reinforcing ribs on the bottom surface of the base plate and the lifting plate in this solution can significantly improve the bending and torsional stiffness of the plate through the frame-type stress dispersion structure. On the one hand, it can evenly distribute the generator's own weight and the load during the lifting process to various areas of the plate, avoiding permanent deformation such as bending and denting due to local stress concentration. On the other hand, while ensuring structural strength, the frame design can effectively control the weight of the plate compared to a single thickened plate, balancing the load-bearing capacity and portability of the device, and making it suitable for mobile operation scenarios such as field transport and emergency rescue.

[0035] Multiple pads on the bottom surface of the lifting platform form a multi-point support structure when the base plate and the lifting platform are brought close together to their minimum distance, filling the gap between the lifting platform and the base plate. This design prevents the lifting platform from collapsing due to lack of support in the middle, maintaining its horizontal posture at all times. This prevents problems such as loose connecting bolts and uneven stress on internal components caused by the tilting of the lifting platform, ensuring the installation stability of the generator when it is stationary at a low position or during the lifting and stopping phases. When the lifting platform is in a low position, the pads bear part of the load of the generator and the lifting platform, effectively distributing the pressure on transmission components such as the bidirectional threaded rods and connecting rods in the lifting mechanism. This prevents the transmission components from being under high load for a long time, reducing the occurrence of faults such as thread stripping and wear at the connecting rod hinges, extending the overall service life of the lifting mechanism, and improving the long-term operational reliability of the device.

[0036] In summary, this invention, by incorporating a lifting mechanism, enables convenient raising and lowering of the generator body, facilitating maintenance of the drive block or raising its position to avoid harsh environments. Furthermore, by setting up a damping locking mechanism and locking it in reverse, the invention can lock the generator body during its ascent, preventing damage to the lifting mechanism due to excessive generator weight and potential hazards. Additionally, by adjusting the damping locking mechanism, its reverse-operation lock can be released, buffering the descent of the generator body and preventing dangers caused by excessively rapid descent and high inertia. Attached Figure Description

[0037] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a front view of the three-dimensional structure of the present invention; Figure 2 This is a bottom view of the three-dimensional structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the lifting mechanism of the present invention; Figure 4 This is a three-dimensional structural diagram of the drive sprocket of the present invention; Figure 5 This is a three-dimensional structural diagram of the damping locking mechanism of the present invention. Figure 1 ; Figure 6 This is a three-dimensional structural diagram of the damping locking mechanism of the present invention. Figure 2 ; Figure 7 This is a three-dimensional structural diagram of the damping locking mechanism of the present invention. Figure 3 ; Figure 8 For the present invention Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0038] The attached diagram shows the markings and corresponding component names: 1. Base plate; 2. Lifting plate; 3. Generator body; 4. Two-way threaded rod; 5. Drive block; 6. First connecting rod; 7. Drive sprocket; 701. Drive handle; 702. Driven sprocket; 8. Hollow sleeve; 9. External movable rod; 10. Sliding flow restrictor; 11. Movable block; 12. Second connecting rod; 13. Internal movable rod; 14. Rotating block; 141. Protrusion; 15. Tension spring; 16. Slip ring; 17. L-shaped handle; 18. Reinforcing rib; 19. Pad; 20. Flow restrictor hole; 21. Limiting plate; 22. Connecting block. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0040] As one embodiment of this application, such as Figures 1-8 As shown, this embodiment provides a mechanical device for adjusting the height of a generator, including a base plate 1, a lifting plate 2 for connecting the generator is provided above the base plate 1, and a lifting mechanism and a damping locking mechanism are provided between the base plate 1 and the lifting plate 2; the lifting mechanism is used to drive the lifting plate 2 to move up and down in the vertical direction. The damping locking mechanism is used to provide unidirectional damping and lock the downward movement when the lifting plate 2 rises, and can provide a downward buffer when the lock is released.

[0041] In one embodiment, such as Figure 2 As shown, both the bottom surfaces of the base plate 1 and the lifting plate 2 are provided with frame-type reinforcing ribs 18. The frame-type reinforcing ribs 18 on the bottom surfaces of the base plate 1 and the lifting plate 2 are welded to the base plate 1 and the lifting plate 2 respectively or fixedly connected by screws. In this embodiment, multiple pads 19 for supporting the lifting plate 2 are also fixedly connected to the bottom surface of the lifting plate 2. In this embodiment, the pads 19 are cuboid in shape, and multiple pads 19 are provided. The multiple pads 19 are distributed at intervals around the bottom of the lifting plate 2. The pads 19 are vertically welded to the lifting plate 2 or fixed by bolts.

[0042] The rectangular pad 19 can increase the support between the base plate 1 and the lifting plate 2 when they are brought close together to the shortest distance, thus preventing the middle of the lifting plate 2 from being subjected to excessive force and bending.

[0043] The upper surface of the lifting plate 2 is connected to the generator body 3 by bolts. In this embodiment, the generator body 3 is a conventional generator device.

[0044] In one embodiment, combined Figures 1-3 As shown, the lifting mechanism in this embodiment includes a bidirectional threaded rod 4 and a driving component. The two ends of the bidirectional threaded rod 4 are rotatably connected to the two ends of the lifting plate 2, respectively. In this embodiment, connecting blocks 22 are welded and fixed at both ends of the bottom surface of the lifting plate 2, and the two ends of the bidirectional threaded rod 4 are rotatably engaged with the two connecting blocks 22, respectively.

[0045] Each threaded part of the bidirectional threaded rod 4 is threaded with a drive block 5. The bottom surface of the drive block 5 is hinged to a first connecting rod 6 via a pin. The other end of the first connecting rod 6 is hinged to the upper surface of the base plate 1. The two first connecting rods are arranged in a cross configuration. The drive component is used to drive the bidirectional threaded rod 4 to rotate.

[0046] Combination Figure 8 As shown, the bidirectional threaded rod 4 is a centrally symmetrical bidirectional threaded rod structure, that is, the bidirectional threaded rod 4 has two threaded parts with opposite directions of rotation, and two drive blocks 5 are respectively threaded to these two threaded parts with opposite directions of rotation, so that when the bidirectional threaded rod 4 is rotated, the two drive blocks 5 can be driven to move closer to each other or further away from each other.

[0047] In this embodiment, there are two bidirectional threaded rods 4, which are symmetrically arranged on both sides of the lifting plate 2. The thread patterns of the two bidirectional threaded rods 4 are consistent. That is, if the left bidirectional threaded rod 4 has a right-hand thread on the left and a left-hand thread on the right, then the right bidirectional threaded rod 4 also needs to maintain the same distribution of right-hand thread on the left and left-hand thread on the right. Conversely, if the left bidirectional threaded rod 4 has a left-hand thread on the left and a right-hand thread on the right, then the right bidirectional threaded rod 4 also needs to be consistent. In this way, based on the synchronous rotation direction of the two bidirectional threaded rods 4, the purpose of the four driving blocks 5 moving closer or further apart can be achieved, thereby realizing the smooth lifting and lowering movement of the lifting plate 2.

[0048] Combination Figure 1 and Figure 4 As shown, the driving component in this embodiment includes a driving sprocket 7, a chain, and a driven sprocket 702. The driving sprocket 7 is rotatably connected to the lifting plate 2. In this embodiment, the driving sprocket 7 is located at the front end of the lifting plate 2. The two bidirectional threaded rods 4 are located on the left and right sides of the lifting plate 2. There are two driven sprockets 702. The two driven sprockets 702 are coaxially fixedly connected to one end of the two bidirectional threaded rods 4 through a key and keyway engagement. The driving sprocket 7 is connected to the driven sprocket 702 at one end of the two bidirectional threaded rods 4 through the chain.

[0049] When the drive sprocket 7 is rotated, the two bidirectional threaded rods 4 can be driven to rotate synchronously through the chain, so as to drive the four drive blocks 5 to move closer to each other. When the four drive blocks 5 move closer to each other, the lifting plate 2 is lifted, so as to lift the generator body 3.

[0050] like Figure 4 As shown, the tooth structure on the drive sprocket 7 has a sufficient wrap angle with the chain to stably drive the driven sprockets 702 on the two bidirectional threaded rods 4 to rotate when the drive sprocket 7 rotates. The longer the contact arc between the chain and the drive sprocket 7, the larger the wrap angle, the more meshing teeth the chain has with the drive sprocket 7, and the more sufficient the contact. This ensures that the chain and the drive sprocket 7 have a sufficient number of meshing teeth, preventing tooth slippage or stripping, thereby stably transmitting power and driving the driven sprockets 702 of the two bidirectional threaded rods 4 to rotate synchronously.

[0051] In one embodiment, such as Figure 4 As shown, in this embodiment, the diameter of the drive sprocket 7 is larger than the diameter of the two driven sprockets 702, which makes it easier to rotate the drive sprocket 7.

[0052] In one embodiment, such as Figure 4 As shown, a Z-shaped drive handle 701 is fixedly connected to the drive sprocket 7, and the grip part of the drive handle 701 is provided with a bearing sleeve. The bearing sleeve structure can reduce the friction between the operator's hand and the Z-shaped drive handle 701 on the drive sprocket 7 when rotating the drive sprocket 7, so as to facilitate the operation of the drive sprocket 7.

[0053] In one embodiment, such as Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, the damping locking mechanism is located below the lifting plate 2. The damping locking mechanism includes a hollow sleeve 8 fixed on the base plate 1, a sliding flow limiting plug 10 slidably disposed in the hollow sleeve 8, an external movable rod 9 fixedly connected to the sliding flow limiting plug 10, and a second connecting rod 12 hinged to the bottom surface of the lifting plate 2. An external movable rod 9 passes through the hollow sleeve 8 and slides axially with the hollow sleeve 8. The outer surface of one end of the external movable rod 9 extending out of the hollow sleeve 8 is connected to a movable block 11 that can slide on the base plate 1. In this embodiment, one end of the external movable rod 9 passes through the movable block 11, and the external movable rod 9 is fixed to the movable block 11 by welding or other means. The end of the second connecting rod 12 away from the lifting plate 2 is hinged to the movable block 11 by a pin. like Figure 6As shown, in this embodiment, the sliding flow restrictor 10 is a conventional piston structure. The sliding flow restrictor 10 has flow restricting holes 20. In this embodiment, the sliding flow restrictor 10 has three flow restricting holes 20, and the three flow restricting holes 20 are evenly distributed circumferentially. The hollow sleeve 8 is filled with liquid components with small compression deformation. When the sliding flow restrictor 10 moves left and right, the liquid inside the hollow sleeve 8 moves through the flow restricting holes 20 to the other side of the sliding flow restrictor 10 inside the hollow sleeve 8. Since the flow velocity of the flow restricting holes 20 is small, the sliding flow restrictor 10 can only move slowly. In this embodiment, as Figure 5 and Figure 7 As shown, the external movable rod 9 is also fitted with an internal movable rod 13 and an elastic reset component. One end of the internal movable rod 13 passes through the sliding flow restrictor 10 and is connected to a one-way sealing component that is adapted to the flow restrictor hole 20 on the sliding flow restrictor 10. The elastic reset component is used to cover the flow restrictor hole 20 under normal conditions. Rotating the internal movable rod 13 can release the one-way sealing component from covering the flow restrictor hole 20.

[0054] In one embodiment, such as Figures 5-7 As shown, the one-way sealing component is a rotating block 14. The rotating block 14 is integrally formed or welded to the built-in movable rod 13, and the diameter of the rotating block 14 is larger than the diameter of the built-in movable rod 13. The rotating block 14 has a circular plate structure. A protrusion 141 is connected to the outside of the rotating block 14. The protrusion 141 of the rotating block 14 matches the flow limiting hole 20 on the sliding flow limiting plug 10. In this embodiment, three protrusions 141 are provided on the outside of the rotating block 14. The three protrusions 141 are evenly distributed circumferentially. The three protrusions 141 correspond exactly to the three flow limiting holes 20. The protrusions 141 can cover the limiting holes. In this embodiment, the protrusions 141 and the rotating block 14 are integrally formed.

[0055] In one embodiment, such as Figure 6 As shown, in this embodiment, the end of the protrusion 141 is an arc surface, and a limiting plate 21 is fixedly connected to the outside of each flow-limiting hole 20. The limiting plate 21 is an arc-shaped plate that is adapted to the protrusion 141. When the rotating block 14 is rotated, the three protrusions 141 on the rotating block 14 can be rotated into the three limiting plates 21 respectively for limiting. The adaptation and cooperation between the protrusion 141 and the arc-shaped limiting plate 21 provides the operator with clear feedback on unlocking and locking. When the built-in movable rod 13 is rotated, the state of covering and blocking the flow-limiting hole 20 can be judged by the tactile feeling of the protrusion 141 being inserted into the limiting plate 21. No additional positioning mark is required, which improves the convenience and accuracy of operation. At the same time, the guiding effect of the arc surface can improve the alignment error tolerance of the protrusion 141, the limiting plate 21, and the flow-limiting hole 20. Even in the case of insufficient light in the field or emergency operation, the unlocking and resetting actions can be completed smoothly.

[0056] In one embodiment, such as Figure 7As shown, a slip ring 16 is rotatably connected to the end of the built-in movable rod 13 away from the one-way sealing component. The slip ring 16 is located inside the external movable rod 9 and slides axially with the external movable rod 9. The elastic reset component is a tension spring 15 disposed inside the external movable rod 9. The two ends of the tension spring 15 are fixedly connected to the external movable rod 9 and the slip ring 16, respectively. That is, one end of the tension spring 15 is connected to the inner top wall of one end of the protruding hollow sleeve 8 of the external movable rod 9, and the other end of the tension spring 15 is connected to the end of the slip ring 16. An L-shaped handle 17 is also fixedly connected to the built-in movable rod 13. In this embodiment, the L-shaped handle 17 is coaxially threaded with the built-in movable rod 13 or connected in other ways. The tension spring 15 is sleeved on the outside of the L-shaped handle 17. The end of the L-shaped handle 17 away from the built-in movable rod 13 extends to the outside of the external movable rod 9 and slides with the external movable rod 9.

[0057] like Figure 6 and Figure 7 As shown, sealing rings are provided on the parts where the hollow sleeve 8 slides in contact with the external movable rod 9, and on the parts where the external movable rod 9 slides in contact with the L-shaped handle 17.

[0058] In one embodiment, such as Figure 1 As shown, in this embodiment, there are four damping locking mechanisms. The four damping locking mechanisms are arranged in pairs, located on the left and right sides of the base plate 1, respectively. The second link 12 in the damping locking mechanism on the left side and the second link 12 in the damping locking mechanism on the right side are arranged to cross each other, which can provide more stable and uniform support for the lifting plate 2.

[0059] In this invention, such as Figure 5 As shown, when the base plate 1 and the lifting plate 2 are far apart, that is, when the generator body 3 is lifted, the lifting plate 2 pulls the movable block 11 and the external movable rod 9 to extend outward toward the hollow sleeve 8 via the second connecting rod 12. At this time, the rotating block 14 is in a state of covering the flow-limiting hole 20 of the sliding flow-limiting plug 10. However, as the external movable rod 9 continues to extend outward, the liquid on the left side of the sliding flow-limiting plug 10 is compressed. At this time, the space on the left side becomes smaller and the liquid pressure increases. Since the sliding flow-limiting plug 10 is sealed with the inner wall of the hollow sleeve 8 (through the sealing ring), the liquid can only flow to the right side (low pressure area) through the flow-limiting hole 20. Although the rotating block 14 covers the flow-limiting hole 20, the thrust generated by the liquid passing through the flow-limiting hole 20 is greater than the tension of the tension spring 15 on the rotating block 14. Therefore, the liquid on the left side of the hollow sleeve 8 will move to the right side of the hollow sleeve 8 through the flow-limiting hole 20. At this time, the liquid on the left side will push the rotating block 14 open when it passes through the flow-limiting hole 20. However, the liquid pressure is only generated when the sliding flow-limiting plug 10 moves outward (lifting process). After the pressure disappears (such as when the lifting stops and the sliding flow-limiting plug 10 no longer moves), the rotating block 14 will be immediately pulled back by the tension spring 15 and cover the flow-limiting hole 20 again.

[0060] If the external movable rod 9 stops extending outward at this time, that is, the drive mechanism stops moving, the lifting plate 2 no longer pulls the second connecting rod 12, and the lifting plate 2, based on the generator body 3 supported on it, will exert a certain pressure on the second connecting rod 12. At this time, the external movable rod 9 tends to move into the hollow sleeve 8 under the pressure of the second connecting rod 12. However, at this time, the rotating block 14 will adhere to the surface of the sliding flow limiting plug 10 under the action of the tension spring 15. The liquid on the right side inside the hollow sleeve 8 cannot enter the left side through the flow limiting hole 20, thus achieving the purpose of locking the external movable rod 9 to move in the opposite direction, achieving the height locking between the base plate 1 and the lifting plate 2, and cooperating with the thread self-locking effect of the bidirectional threaded rod 4 to stably support the lifting plate 2 at a certain height.

[0061] By using the rotating block 14 to unidirectionally lock the upper flow hole 20 of the sliding flow limit plug 10, the problem of the lifting plate 2 suddenly falling due to damage to the drive mechanism caused by excessive weight of the generator body 3 during the lifting process or when it is at a high position can be avoided, thus effectively protecting the safety of equipment and personnel.

[0062] If it is necessary to lower the lifting platform 2 using the lifting mechanism, see [link / reference]. Figure 6 and Figure 7 An existing metal tubular structure can be fitted onto the end of the L-shaped handle 17. Rotating the L-shaped handle 17 causes the built-in movable rod 13 and rotating block 14 to rotate, thus misaligning the protrusion 141 on the rotating block 14 with the flow-limiting orifice 20 on the sliding flow-limiting plug 10. At this point, the protrusion 141 on the rotating block 14 no longer covers or blocks the flow-limiting orifice 20. See details... Figure 6 The liquid inside the hollow sleeve 8 can then move freely to the left and right sides of the sliding flow restrictor 10.

[0063] By unblocking the flow-limiting orifice 20, the external movable rod 9 and the sliding flow-limiting plug 10 can move slowly in the opposite direction, so as to achieve a slower speed when the lifting plate 2 descends, thus avoiding the problem of damage to equipment and personnel caused by the excessive inertia caused by the rapid descent speed of the lifting plate 2.

[0064] The specific implementation process is as follows: First, when it is necessary to lift the lifting plate 2 and the generator body 3, manually rotate the drive sprocket 7. Since the diameter of the drive sprocket 7 is much larger than the diameter of the driven sprocket 702 on the double-threaded rod 4, it is easier to rotate the drive sprocket 7. When the drive sprocket 7 drives the double-threaded rod 4 to rotate, the four drive blocks 5 will move closer to each other in pairs to achieve the purpose of lifting the lifting plate 2. When the lifting plate 2 rises, the second connecting rod 12 drives the external movable rod 9 to extend outward toward the hollow sleeve 8. At this time, the sliding flow limiting plug 10 also moves with the external movable rod 9. When the sliding flow limiting plug 10 moves, the liquid in its moving direction will be squeezed into the other side through the flow limiting hole 20. At this time, the rotating block 14 is supported by the tension of the sliding spring 15, which acts as a one-way valve structure. That is, the sliding flow limiting plug 10 can only move outward with the external movable rod 9 and cannot move in the opposite direction. This achieves the purpose that the lifting plate 2 can only rise and cannot fall significantly. It avoids the problem of the lifting plate 2 suddenly falling due to the damage to the drive mechanism caused by the excessive weight of the generator body 3 during the rising process or when it is at a high position. It can effectively protect the safety of equipment and personnel. If it is necessary to lower the lifting plate 2, the one-way flow effect of the flow-limiting hole 20 of the rotating block 14 needs to be released. That is, the built-in movable rod 13 and the rotating block 14 are rotated by the L-shaped handle 17, so that the protrusion 141 on the rotating block 14 releases the blockage of the upper flow-limiting hole 20 of the sliding flow-limiting plug 10. At this time, the liquid can move freely on both sides of the sliding flow-limiting plug 10, so that the sliding flow-limiting plug 10 and the external movable rod 9 can move in opposite directions. This achieves the purpose of lowering the lifting plate 2 at a slower speed, avoiding the problem of damage to equipment and personnel caused by the large inertia caused by the lifting plate 2 falling too fast.

[0065] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mechanical device for adjusting the height of a generator, comprising a base plate, characterized in that, A lifting plate for connecting a generator is provided above the base plate, and a lifting mechanism and a damping locking mechanism are provided between the base plate and the lifting plate. The lifting mechanism is used to drive the lifting plate to move up and down in the vertical direction; The damping locking mechanism is used to provide unidirectional damping and lock the downward movement when the lifting plate rises, and can provide a downward buffer when the lock is released.

2. The mechanical device for adjusting the height of a generator according to claim 1, characterized in that, The lifting mechanism includes a bidirectional threaded rod and a driving component. The two ends of the bidirectional threaded rod are rotatably connected to the two ends of the lifting plate, respectively. A driving block is threadedly connected to the threaded portion of the bidirectional threaded rod. A first connecting rod is hinged to the bottom surface of the driving block. The other end of the first connecting rod is hinged to the upper surface of the base plate. The two first connecting rods are arranged in a cross configuration. The driving component is used to drive the bidirectional threaded rod to rotate.

3. The mechanical device for adjusting the height of a generator according to claim 2, characterized in that, The number of bidirectional threaded rods is two, and the two bidirectional threaded rods are symmetrically arranged on both sides of the lifting plate, and the thread pattern of the two bidirectional threaded rods is the same; the driving component includes a driving sprocket, a chain and a driven sprocket; the driving sprocket is rotatably connected to the lifting plate, and there are two driven sprockets. The two driven sprockets are fixedly connected to one end of the two bidirectional threaded rods, and the driving sprocket is driven by the chain to the driven sprockets at one end of the two bidirectional threaded rods.

4. A mechanical device for adjusting the height of a generator according to claim 3, characterized in that, The diameter of the drive sprocket is larger than the diameter of the two driven sprockets.

5. A mechanical device for adjusting the height of a generator according to claim 3, characterized in that, A Z-shaped drive handle is fixedly connected to the drive sprocket, and the grip portion of the drive handle is provided with a bearing-type sleeve.

6. A mechanical device for adjusting the height of a generator according to claim 1, characterized in that, The damping locking mechanism includes a hollow sleeve fixed to the base plate, a sliding flow restrictor slidably disposed in the hollow sleeve, an external movable rod fixedly connected to the sliding flow restrictor, and a second connecting rod hinged to the bottom surface of the lifting plate. The external movable rod passes through the hollow sleeve and slides axially with the hollow sleeve. The outer surface of one end of the external movable rod extending out of the hollow sleeve is connected to a movable block that can slide on the base plate. The end of the second connecting rod away from the lifting plate is hinged to the movable block. The sliding flow restrictor has a flow restrictor hole, and the external movable rod is also fitted with an internal movable rod and an elastic reset member. One end of the internal movable rod passes through the sliding flow restrictor and is connected to a one-way sealing member that is adapted to the flow restrictor hole on the sliding flow restrictor. The elastic reset member is used to make the one-way sealing member cover the flow restrictor hole in the normal state. Rotating the internal movable rod can release the one-way sealing member from covering the flow restrictor hole.

7. A mechanical device for adjusting the height of a generator according to claim 6, characterized in that, The one-way sealing component is a rotating block, and a protrusion is connected to the outside of the rotating block. The protrusion of the rotating block matches the flow-limiting hole on the sliding flow-limiting plug.

8. A mechanical device for adjusting the height of a generator according to claim 6, characterized in that, The built-in movable rod has a slip ring rotatably connected to one end away from the one-way sealing member. The slip ring is located inside the external movable rod and slides axially with the external movable rod. The elastic reset member is a tension spring disposed inside the external movable rod. The two ends of the tension spring are fixedly connected to the external movable rod and the slip ring, respectively. An L-shaped handle is also fixedly connected to the built-in movable rod. The end of the L-shaped handle away from the built-in movable rod extends to the outside of the external movable rod and slides slidably with the external movable rod.

9. A mechanical device for adjusting the height of a generator according to claim 8, characterized in that, The portion of the hollow sleeve that slides in contact with the external movable rod, and the portion of the external movable rod that slides in contact with the L-shaped handle, are both provided with sealing rings.

10. A mechanical device for adjusting the height of a generator according to any one of claims 1-9, characterized in that, Both the base plate and the lifting plate have frame-type reinforcing ribs on their bottom surfaces, and the bottom surface of the lifting plate is also fixedly connected with multiple pads for supporting the lifting plate.

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