Jacking translation tool suitable for wind power gear box

Abstract

The utility model discloses a jacking translation tool suitable for a wind power gear box, which relates to the technical field of wind power gear box maintenance equipment and comprises a jacking assembly and a translation assembly which are arranged in a cabin. The translation assembly comprises a fixed bottom plate arranged in the cabin, two supporting frames are symmetrically arranged on the top face of the fixed bottom plate, and limiting tools are integrally arranged at the upper ends of the supporting frames and slidably connected with the wind power gear box. The jacking assembly comprises a plurality of first hydraulic telescopic columns and a plurality of second hydraulic telescopic columns which are arranged on the top face of the fixed bottom plate. According to the jacking translation tool suitable for the wind power gear box, the technical problem that maintenance operation on a tower is difficult to complete under the condition that a cabin is small is solved. The wind power gear box is moved by a certain distance in the cabin through the limiting tool, the wind power gear box is lifted to the designated height through the first hydraulic telescopic rod and the second hydraulic telescopic rod, the workable space on a tower is enlarged, and the maintenance range of the wind power gear box is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power gear box maintenance equipment, in particular to a jacking and translation tool suitable for a wind power gear box. Background Art

[0002] As the operation time of wind turbines increases year by year, the number of vulnerable parts and key parts on the wind turbine gearbox body also increases accordingly. For the wind turbine gearbox of the double-fed wind turbine on the market, due to the limitations of the unit cabin structure and frame layout design, the small space inside the cabin, and the large weight of the wind turbine gearbox, the technical upgrade and component maintenance of the wind turbine gearbox cannot be fully carried out, and the existing tower operation tooling and maintenance projects are all based on the premise that the wind turbine gearbox support arm inside the cabin is not disassembled.

[0003] In the related art, the self-lifting device of the wind turbine gearbox of an onshore wind turbine generator set includes a supporting steel frame installed inside the wind turbine cabin, a fixed pulley assembly, a movable pulley assembly installed on the wind turbine gearbox, a wire rope, and a winch crane installed at the bottom of the tower base. The lifting and lowering of the wind turbine gearbox is controlled by controlling the rope output and rope retraction of the winch crane.

[0004] However, when the nacelle is small, there are many cables at the bottom of the wind turbine gearbox, and there is almost no working space. It is difficult for workers to complete the repair and maintenance work on the tower. The wind turbine gearbox needs to be lowered from the tower before processing. The hoisting process is troublesome and the repair and maintenance cost is high. Therefore, a lifting and translation tooling is needed to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a lifting and translation tooling suitable for a wind power gearbox, which solves the technical problem that when the cabin is small and the working space is narrow, it is difficult for workers to complete the repair and maintenance work on the tower.

[0006] To achieve the above-mentioned purpose, the utility model provides a jacking and translation tooling suitable for a wind power gearbox, comprising: a jacking assembly and a translation assembly arranged in a nacelle;

[0007] The translation assembly includes: a fixed bottom plate arranged in the cabin, two support frames are symmetrically arranged on the top surface of the fixed bottom plate, and a limiting tool is integrally arranged on the upper end of the support frame. The limiting tool is slidably connected to the wind power gear box, and one end of the wind power gear box is flange-connected to the main shaft.

[0008] The lifting assembly includes: a plurality of first hydraulic telescopic columns and a plurality of second hydraulic telescopic columns arranged on the top surface of the fixed base plate, and the top ends of the first hydraulic telescopic columns and the second hydraulic telescopic columns are both connected to the wind power gearbox.

[0009] Preferably, two first force-bearing plates are symmetrically arranged at one end of the wind turbine gearbox, and two second force-bearing plates are symmetrically arranged at the other end of the wind turbine gearbox, and both the first force-bearing plates and the second force-bearing plates are L-shaped.

[0010] Preferably, a tooling spring support is provided on one side of the first force-bearing plate, and the tooling spring support is connected to the top end of the first hydraulic telescopic column.

[0011] Preferably, the top end of the second hydraulic telescopic column is slidably connected to the second force-bearing plate, and the bottom end of the second hydraulic telescopic column is fixedly connected to the fixed bottom plate.

[0012] Preferably, a plurality of penetrating guide holes are arranged on the top surface of the second force-bearing plate, and a plurality of vertical limit rods are arranged in the cabin, and the vertical limit rods are slidably connected to the guide holes.

[0013] Preferably, the limiting tool comprises: a limiting plate integrally arranged at the upper end of the supporting frame, the limiting plate being threadedly connected to a top screw bolt, and one end of the top screw bolt being rotatably connected to the first force-bearing plate.

[0014] Preferably, a sliding block is provided on the top surface of the support frame, and the sliding block is slidably connected to the first force-bearing plate.

[0015] Preferably, a plurality of elastic supports are symmetrically arranged on both sides of the wind power gearbox, and one end of the elastic support is connected to the first force-bearing plate.

[0016] Preferably, a plurality of cushion blocks are arranged below the wind turbine gearbox, and the plurality of cushion blocks are stacked in sequence from bottom to top.

[0017] Compared with the above background technology, the utility model provides a lifting and translation tooling suitable for wind turbine gearboxes. After the wind turbine gearbox is lifted for a certain distance by the first hydraulic telescopic rod and the second hydraulic telescopic rod, the wind turbine gearbox is placed on the limiting tooling. The wind turbine gearbox is adjusted to move backward a certain distance by the limiting tooling. The wind turbine gearbox is separated from the main shaft. The wind turbine gearbox is slowly lifted to a specified height by the first hydraulic telescopic rod and the second hydraulic telescopic rod for a second time. The wind turbine gearbox is placed on a larger limiting tooling. The limiting tooling is used to drive the wind turbine gearbox to slide backward to a specified position again. The lifting and parallel movement of the wind turbine gearbox inside the cabin is completed, which effectively expands the workable space on the tower and improves the maintenance range of the wind turbine gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] FIG1 is a schematic plan view of a lifting and translation tooling before a wind turbine gearbox is moved provided by an embodiment of the utility model;

[0020] FIG2 is a schematic plan view of the lifting and translation tooling after the wind turbine gearbox is lifted provided by an embodiment of the utility model;

[0021] FIG. 3 is an enlarged schematic diagram of point A in FIG. 2 .

[0022] Specifically, 1-fixed bottom plate; 2-support frame; 3-limiting tooling; 301-limiting plate; 302-top screw bolt; 303-slider; 4-wind power gearbox; 5-main shaft; 6-first hydraulic telescopic column; 7-second hydraulic telescopic column; 8-first force plate; 9-second force plate; 10-tooling spring support; 11-vertical limiting rod; 12-crossbeam; 13-pad. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] As shown in FIG. 1 and FIG. 2 , a jacking and translating tool suitable for a wind power gearbox includes: a jacking component and a translating component arranged in a nacelle.

[0026] The translation assembly includes: a fixed base plate 1 arranged in the cabin, two support frames 2 are symmetrically arranged on the top surface of the fixed base plate 1, a limit fixture 3 is integrally arranged on the upper end of the support frame 2, the limit fixture 3 is slidably connected to the wind turbine gear box 4, one end of the wind turbine gear box 4 is flange-connected to the main shaft 5, the wind turbine gear box 4 is first separated from the main shaft 5, and the wind turbine gear box 4 is driven to move backward a certain distance by rotating the top screw bolt 302 in the forward direction, and the wind turbine gear box 4 is disengaged from the main shaft 5.

[0027] The lifting assembly includes: a plurality of first hydraulic telescopic columns 6 and a plurality of second hydraulic telescopic columns 7 arranged on the top surface of the fixed bottom plate 1, the top of the first hydraulic telescopic column 6 and the top of the second hydraulic telescopic column 7 are both connected to the wind turbine gearbox 4, wherein the first hydraulic telescopic rod and the second hydraulic telescopic rod are symmetrically arranged on both sides of the wind turbine gearbox 4 to ensure that each part of the gearbox is subjected to uniform supporting force, and the wind turbine gearbox 4 is slowly lifted to a specified height through the first hydraulic telescopic rod and the second hydraulic telescopic rod. Through the above two steps, the lifting and parallel movement of the wind turbine gearbox 4 inside the nacelle are completed, thereby expanding the tower operation space.

[0028] The wind turbine gearbox 4 is slowly lifted for a certain distance by the first hydraulic telescopic rod and the second hydraulic telescopic rod, without affecting the connection between the wind turbine gearbox 4 and the main shaft 5, and the limit fixture 3 is placed under the wind turbine gearbox 4, the first hydraulic telescopic rod is retracted, the wind turbine gearbox 4 is stabilized above the limit fixture 3, and the top screw bolt 302 is rotated forward to drive the wind turbine gearbox 4 to move backward for a certain distance, and the wind turbine gearbox 4 is separated from the main shaft 5, and then the wind turbine gearbox 4 is slowly lifted to a specified height by the first hydraulic telescopic rod and the second hydraulic telescopic rod, and the larger limit fixture 3 is placed under the wind turbine gearbox 4 again, the first hydraulic telescopic rod is retracted, and the wind turbine gearbox 4 is adjusted to move backward for a certain distance again, and the wind turbine gearbox 4 is slid backward to the specified position. By lifting and parallel moving the position of the wind turbine gearbox inside the nacelle, the workable space on the tower is expanded, and the maintenance range of the wind turbine gearbox is improved.

[0029] Preferably, two first force plates 8 are symmetrically arranged at one end of the wind turbine gearbox 4, and two second force plates 9 are symmetrically arranged at the other end of the wind turbine gearbox 4, and both the first force plates 8 and the second force plates 9 are L-shaped. The first force plates 8 and the second force plates 9 are designed to be L-shaped, which is convenient for cooperation with the first hydraulic telescopic rod and the second hydraulic telescopic rod.

[0030] Among them, a tooling spring support 10 is installed on the left side of the first force-bearing plate 8, and the tooling spring support 10 is connected to the top end of the first hydraulic telescopic rod, which is used to assist the first hydraulic telescopic rod in supporting the first force-bearing plate 8, so as to facilitate the disassembly of the connection box between the first hydraulic telescopic rod and the first force-bearing plate 8.

[0031] In one embodiment of the utility model, the top end of the second hydraulic telescopic column 7 is slidably connected to the second force plate 9, and the bottom end of the second hydraulic telescopic column 7 is fixedly connected to the fixed bottom plate 1. In the process of the wind power gear box 4 moving backward, the second hydraulic telescopic rod slides relative to the second force plate 9, and it is preferred to connect the second force plate 9 with the top end of the second hydraulic telescopic rod through a slider 303 to ensure that the second hydraulic telescopic rod always stably supports the wind power gear box 4. Among them, the slider 303 is a nylon slider 303, which has the advantages of small friction coefficient and high compressive strength.

[0032] In one embodiment of the utility model, a plurality of penetrating guide holes (not shown in the figure) are provided on the top surface of the second force-bearing plate 9, and a plurality of vertical limit rods 11 are provided in the cabin, and the vertical limit rods 11 are slidably connected to the guide holes, wherein a cross beam 12 is provided in the cabin, and the cross beam 12 is used to fix the top of the vertical limit rod 11, and the bottom end of the vertical limit rod 11 is fixedly connected to the fixed bottom plate 1. After the wind turbine gear box 4 is translated to the specified position, a plurality of vertical limit rods 11 are fixed in the cabin by bolt connection, wherein the vertical limit rods 11 penetrate the guide holes, and during the process of the wind turbine gear box 4 being lifted up driven by the first hydraulic telescopic rod and the second hydraulic telescopic rod, the vertical limit rods 11 can correct the rising path of the wind turbine gear box 4, and prevent the wind turbine gear box 4 from being skewed when rising, thereby ensuring the safety of the operation process.

[0033] In addition, the vertical limit rod 11 cooperates with the guide hole to fix the wind gear box 4 to a certain extent. Correspondingly, the first force plate 8 is also used to assist in fixing the other end of the wind gear box 4, thereby assisting in enhancing the stability of the wind gear box 4 after it is lifted.

[0034] As shown in Figure 3, the limiting tool 3 includes: a limiting plate 301 integrally arranged on the upper end of the support frame 2, the limiting plate 301 is used to limit the translation distance of the wind power gear box 4, the main function of the support frame 2 is to provide support force for the wind power gear box 4 to ensure that the wind power gear box 4 is stably fixed, the limiting plate 301 is mainly used to prevent the gear box from moving backward too far, the limiting plate 301 is threadedly connected to the top screw bolt 302, one end of the top screw bolt 302 is connected to the wind power gear box 4, by rotating the top screw bolt 302 forward, the top screw bolt 302 moves to the right relative to the limiting plate 301, and by rotating the top screw bolt 302 backward, the top screw bolt 302 moves to the left relative to the limiting plate 301, and during the movement of the top screw bolt 302 to the right, the left end of the top screw bolt 302 pulls the second force plate 9 to move to the right, and the wind power gear box 4 translates to the right synchronously.

[0035] Among them, a slider 303 is set on the top surface of the support frame 2, and the slider 303 is slidably connected to the first force-bearing plate 8. After the first hydraulic telescopic rod is retracted, the wind turbine gear box 4 falls on the top surface of the support frame 2. The setting of the slider 303 can effectively reduce the friction between the wind turbine gear box 4 and the support frame 2, improve the flexibility of the wind turbine gear box 4 during the translation process, and be more easily driven by the top screw bolt 302.

[0036] It should be noted that when the wind turbine gearbox 4 is connected to the main shaft 5, the elastic support is installed on the left side of the first force plate, that is, before the wind turbine gearbox 4 is disassembled, a number of elastic supports (not shown in the figure) are symmetrically arranged on both sides of the wind turbine gearbox 4 to provide stable support for the wind turbine gearbox 4. One end of the elastic support is connected to the left side of the first force plate 8. A crossbeam 12 is installed in the cabin. The other end of the elastic support is bolted to the crossbeam 12. The other end of the elastic support is connected to the wind turbine gearbox 4. The elastic support is used to fix the wind turbine gearbox 4 to prevent the wind turbine gearbox 4 from shaking or other unstable phenomena. When it is necessary to install the tooling spring support 10 on one side of the force plate, the elastic support needs to be disassembled. After the elastic support is disassembled on the first force plate 8, there will be a connection hole. The tooling spring support 10 is installed at the position of the connection hole.

[0037] In one embodiment of the utility model, a plurality of cushion blocks 13 are arranged under the wind power gearbox 4, and the plurality of cushion blocks 13 are stacked in sequence from bottom to top. After the first hydraulic telescopic rod and the second hydraulic telescopic rod reach the limit length, the cushion blocks 13 are stacked in sequence from bottom to top under the wind power gearbox 4 to replace the corresponding first hydraulic telescopic rod or the second hydraulic telescopic rod, and the first hydraulic telescopic rod or the second hydraulic telescopic rod is retracted. At this time, the stacked cushion blocks 13 provide support force for the wind power gearbox 4. When it is necessary to further increase the height of the wind power gearbox 4, the cushion blocks 13 are stacked in sequence from bottom to top under the corresponding first hydraulic telescopic rod or the second hydraulic telescopic rod, and the first hydraulic telescopic rod or the second hydraulic telescopic rod is extended, and the cushion blocks 13 used to replace the first hydraulic telescopic rod or the second hydraulic telescopic rod are replaced. Repeating the above steps can lift the wind power gearbox 4 to a higher height.

[0038] Among them, during the jacking process of the wind turbine gearbox 4, a combined embedded pad 13 is used, which, in combination with the vertical limit rods 11 installed on both sides of the wind turbine gearbox 4, can meet the load generated by the wind turbine yaw on the wind turbine gearbox 4, and further enhance the safety of the wind turbine gearbox 4 during the jacking process.

[0039] When the utility model is used, the connecting bolts between the wind turbine gear box 4 and the flange of the main shaft 5 are removed, the wind turbine gear box 4 is slowly lifted for a distance by the first hydraulic telescopic rod and the second hydraulic telescopic rod, the limiting tool 3 is placed under the wind turbine gear box 4, the first hydraulic telescopic rod is contracted, the wind turbine gear box 4 is stabilized above the limiting tool 3, the top screw bolt 302 is rotated forwardly, the wind turbine gear box 4 is driven to move backward a certain distance, the wind turbine gear box 4 is separated from the main shaft 5, and then the wind turbine gear box 4 is slowly lifted to a specified height by the first hydraulic telescopic rod and the second hydraulic telescopic rod, the limiting tool 3 with a larger size is placed under the wind turbine gear box 4 again, the first hydraulic telescopic rod is contracted, and the backward movement distance of the wind turbine gear box 4 is adjusted again by forwardly rotating the top screw bolt 302, and the wind turbine gear box 4 is slid backward to the specified position.

[0040] It should be noted that, in the process of rotating each top screw bolt 302, each top screw bolt 302 is synchronized, and both sides of the wind turbine gearbox 4 move backward by the same distance, thereby ensuring that the connecting flange stopper is disengaged. On the other hand, in the process of lifting the wind turbine gearbox 4, a special ruler is used to ensure that the lifting distance of the wind turbine gearbox 4 is kept consistent each time, thereby avoiding excessive deflection of the wind turbine gearbox 4 during the lifting process, thereby ensuring the safety of the operation process.

[0041] In summary, the first hydraulic telescopic rod and the second hydraulic telescopic rod preferably use a jack, and the gear box is slowly lifted by the jack. At the same time, pads 13 are gradually added under the wind turbine gear box 4. The lifting process ensures that the four fulcrums of the gear box are moved slowly and synchronously at a uniform speed, thereby achieving stable lifting of the gear box, effectively expanding the repairable operating range, and improving the repair range of the wind turbine gear box 4, thereby reducing the cost of repair, maintenance and optimization and upgrading of the wind turbine gear box 4.

[0042] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0043] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the utility model.

Claims

1. A lifting and translation tooling suitable for a wind power gearbox, characterized in that: include: A lifting assembly and a translation assembly disposed in the nacelle; The translation assembly comprises: a fixed bottom plate arranged in the nacelle, two support frames are symmetrically arranged on the top surface of the fixed bottom plate, a limit fixture is integrally arranged on the upper end of the support frame, the limit fixture is slidably connected to the wind power gear box, and one end of the wind power gear box is flange-connected to the main shaft; The lifting assembly includes: a plurality of first hydraulic telescopic columns and a plurality of second hydraulic telescopic columns arranged on the top surface of the fixed base plate, and the top ends of the first hydraulic telescopic columns and the second hydraulic telescopic columns are both connected to the wind power gearbox.

2. The lifting and translation tooling for a wind turbine gearbox according to claim 1, characterized in that: Two first force-bearing plates are symmetrically arranged at one end of the wind power gear box, and two second force-bearing plates are symmetrically arranged at the other end of the wind power gear box. Both the first force-bearing plates and the second force-bearing plates are L-shaped.

3. The lifting and translation tooling for a wind power gearbox according to claim 2, characterized in that: A tooling spring support is arranged on one side of the first force-bearing plate, and the tooling spring support is connected to the top end of the first hydraulic telescopic column.

4. The lifting and translation tooling for a wind power gearbox according to claim 3, characterized in that: The top end of the second hydraulic telescopic column is slidably connected to the second force-bearing plate, and the bottom end of the second hydraulic telescopic column is fixedly connected to the fixed bottom plate.

5. A lifting and translation tooling for a wind turbine gearbox according to any one of claims 2 to 4, characterized in that: A plurality of penetrating guide holes are arranged on the top surface of the second force-bearing plate, and a plurality of vertical limiting rods are arranged in the cabin, and the vertical limiting rods are slidably connected to the guide holes.

6. The lifting and translation tooling for a wind power gearbox according to claim 2, characterized in that: The limiting fixture comprises: a limiting plate integrally arranged at the upper end of the supporting frame, the limiting plate being threadedly connected to a top screw bolt, and one end of the top screw bolt being rotatably connected to the first force-bearing plate.

7. The lifting and translation tooling for a wind power gearbox according to claim 6, characterized in that: A sliding block is arranged on the top surface of the support frame, and the sliding block is slidably connected with the first force-bearing plate.

8. The lifting and translation tooling for a wind power gearbox according to claim 2, characterized in that: A plurality of elastic supports are symmetrically arranged on both sides of the wind power gear box, and one end of the elastic support is connected to the first force-bearing plate.

9. The lifting and translation tooling for a wind power gearbox according to claim 1, characterized in that: A plurality of cushion blocks are arranged below the wind power gear box, and the cushion blocks are stacked in sequence from bottom to top.

Images