Tool for replacement on 2P1H gearbox spline shaft motor side bearing tower

Abstract

The utility model relates to the technical field of gear boxes, in particular to a tool used for replacement on a 2P1H gear box spline shaft motor side bearing tower, which comprises a wind power gear box rear box body assembly, a wind power gear box rear box cover assembly is fixedly arranged on one side of the wind power gear box rear box body assembly, and the wind power gear box rear box cover assembly is fixedly arranged on the other side of the wind power gear box rear box body assembly. A lifting appliance fixing assembly is arranged on one side of the wind power gear box rear box cover assembly, a lifting appliance supporting assembly is arranged on one side of the lifting appliance fixing assembly, and a concentric positioning assembly is arranged on one side of the wind power gear box rear box cover assembly. By means of the tool, the spline shaft motor side bearing can be replaced on the tower, maintenance work can be completed in shutdown days instead of five shutdown days, a crane does not need to be used for hoisting the spline shaft and the rear box cover to the lower portion of the tower, only three persons and two days are needed for replacing the spline shaft motor side bearing on the tower through the tool, and compared with four persons and four days needed by a crane scheme, the replacement efficiency is greatly improved. And the tool is suitable for replacement of spline shaft motor side bearings of all 2P1H machine type gearboxes.

Description

TECHNICAL FIELD

[0001] The utility model discloses a gear box technical field relates to gear box spline shaft bearing failure carries out the maintenance on the tower. BACKGROUND

[0002] The power generation of wind driven generator is inseparable from the stable operation of wind power gear box, and the stable operation of wind power gear box is also inseparable from bearing, and if the bearing of wind power gear box fails, the power generation of fan will be affected, and if the failed bearing cannot be replaced in time, huge power generation loss will be caused.

[0003] For the related technology in the above, the inventor finds that there are the following defects: for the failure of the spline shaft motor side bearing of the wind power gear box, the current industry cannot realize the on-tower replacement of the bearing, and the spline shaft system and the rear cover need to be lifted down the tower by the crane, and the bearing is replaced on the ground, the scheme needs more personnel working hours, and needs huge hoisting cost, the replacement cost is large and the downtime is long, which is a considerable loss to the gear box manufacturer and the owner. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, in order to solve the problems mentioned in the background art, the application provides a tool for replacing the motor side bearing of 2P1H gear box spline shaft on the tower.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a tool for replacing the motor side bearing of 2P1H gear box spline shaft on the tower, comprising a wind power gear box rear box body assembly, one side of the wind power gear box rear box body assembly is fixedly installed with a wind power gear box rear cover assembly, one side of the wind power gear box rear cover assembly is provided with a lifting appliance fixing assembly, one side of the lifting appliance fixing assembly is provided with a lifting appliance supporting assembly, and one side of the wind power gear box rear cover assembly is provided with a concentric positioning assembly.

[0006] The lifting tool support assembly comprises a right-angle support rod, a hollow groove, a lifting tool adjusting seat and a first outer hexagonal bolt, the right-angle support rod is fixedly installed on one side of the lifting tool fixing assembly through the first outer hexagonal bolt, the inside of the right-angle support rod is provided with the hollow groove, and the bottom of the right-angle support rod is fixedly installed with the lifting tool adjusting seat. The right-angle support rod: a right-angle structure is formed by a longitudinal support column and a transverse support column, a stable supporting effect is provided, the force generated from lifting and other operations is borne, and the right-angle support rod is fixed on one side of the lifting tool fixing assembly through the first outer hexagonal bolt, the stability of the whole supporting structure is guaranteed, and the hollow groove structure in the inside can also reduce the dead weight to a certain extent. The hollow groove: on the one hand, the weight of the whole right-angle support rod can be reduced, and the use and operation of the tooling are facilitated; on the other hand, a plurality of inclined support plates arranged in the inside can further enhance the structural strength of the support rod, so that the support rod can better bear the force. The lifting tool adjusting seat: a plurality of positioning holes penetrating through the side surface of the lifting tool adjusting seat can be used as the support points of the chain hoist, the position of the chain hoist and other lifting tools can be conveniently adjusted and fixed, the length of the lifting tool adjusting seat is equal to that of the dummy shaft body, better cooperation can be realized in the spatial layout, and the lifting process is guaranteed to be stable and orderly. The first outer hexagonal bolt: the right-angle support rod is fixedly arranged on one side of the lifting tool fixing assembly, displacement of the support rod in the use process is prevented, and it is ensured that the whole lifting tool support assembly can reliably play a supporting role.

[0007] Optionally, the lifting tool fixing assembly comprises a lifting tool fixing plate, a lifting tool fixing seat and a first inner hexagonal bolt, the lifting tool fixing seat is fixedly installed on one side of the wind power gear box rear cover assembly, the lifting tool fixing plate is fixedly installed on one side of the lifting tool fixing seat through the first inner hexagonal bolt, and the other side of the lifting tool fixing plate is fixedly installed on one side of the lifting tool fixing seat through a second inner hexagonal bolt. The lifting tool fixing plate: mainly plays a role in fixing the lifting tool, cooperates with the lifting tool fixing seat, is fixed through the inner hexagonal bolt, so that the lifting tool can be stably installed at a suitable position of the tooling, and provides a reliable connecting point for subsequent lifting related operations. The lifting tool fixing seat: as a basic component installed on the wind power gear box rear cover assembly, the lifting tool fixing plate is connected, the lifting tool is reliably connected with the rear cover assembly through the inner hexagonal bolt, and the stability and safety during lifting are guaranteed.

[0008] Optionally, the wind power gear box rear cover assembly comprises a rear cover body, a positioning protrusion and a first positioning plate, the wind power gear box rear cover assembly comprises a rear cover body, a second positioning plate and a rear cover fixing seat, the rear cover body is arranged on one side of the wind power gear box rear cover assembly, one side of the rear cover body is fixedly connected with the first positioning plate, the top of the first positioning plate is symmetrically provided with the positioning protrusion with the right-angle support rod as the center, the rear cover body is fixedly installed on one side of the rear cover body through the second positioning plate, and one side of the rear cover body is fixedly connected with the rear cover fixing seat.

[0009] Optionally, the concentric positioning assembly comprises a dummy shaft body, a dummy shaft extension, a top plate and a second external hexagonal bolt, the top plate is fixedly installed on one side of the spline shaft body through the second external hexagonal bolt, the top plate is kept concentric with the dummy shaft body, one side of the dummy shaft body is fixedly connected with the dummy shaft extension, one side of the dummy shaft extension is movably sleeved with a support plate, and one side of the support plate is fixedly connected with a screw rod, and the screw rod is fixedly connected on one side of the rear cover fixing seat. The dummy shaft extension can cooperate with the support plate and other components to play the roles of connection, force transmission and auxiliary positioning, so that the whole tool structure is more closely and orderly coordinated when the spline shaft motor side bearing tower replacement operation is involved.

[0010] Optionally, the spline shaft body is arranged inside a cavity formed by the wind power gear box rear box body assembly and the wind power gear box rear cover assembly, the dummy shaft body is arranged directly below the right-angle support rod and the lifting tool adjusting seat, and the length of the dummy shaft body is greater than that of the spline shaft body.

[0011] Optionally, the right-angle support rod is composed of a longitudinal support column and a transverse support column, and the included angle between the longitudinal support column and the transverse support column is 90°, and a plurality of inclined support plates are arranged in the hollow groove.

[0012] Optionally, a plurality of positioning holes are formed through the side surface of the lifting tool adjusting seat, the positioning holes serve as supporting points of the hand-operated hoist, and the length of the lifting tool adjusting seat is equal to that of the dummy shaft body.

[0013] In summary, the present application has the following beneficial technical effects:

[0014] 1. The tool realizes the spline shaft motor side bearing replacement on the tower, and the maintenance work can be completed in one day after the shutdown of five days, without the need of using a crane to hoist the spline shaft and the rear cover down the tower, 100,000 hoisting costs are saved, only 3 people and 2 days are needed to replace the spline shaft motor side bearing on the tower by using the tool, half of the operation and maintenance costs are saved compared with 4 people and 4 days required by the crane scheme, and the tool is suitable for spline shaft motor side bearing replacement of all 2P1H gear box models.

[0015] 2. The utility model discloses when using, each component adopts bolt connection between, and the lifting appliance fixed assembly is fixed through the fixing plate and fixed seat of internal hexagon bolt connection, concentric positioning assembly fixes the top plate with outer hexagonal bolt, etc. Convenient installation and disassembly make the whole tooling easy to assemble and adjust under the scene of on -the -spot maintenance replacement, greatly shorten the equipment downtime, improve the maintenance replacement efficiency, reduce the production loss caused by equipment failure. The rear box body assembly and rear cover assembly of the wind power gear box form a closed cavity to protect the internal components, prevent foreign matters such as dust and impurities from entering during the replacement operation, avoid secondary damage to precise spline shaft, bearing and other components, prolong the service life of the equipment, and reduce the equipment maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of equipment in the embodiment of the application;

[0017] Figure 2 It is the local structure schematic diagram of equipment in the embodiment of the application;

[0018] Figure 3 It is the main body structure schematic diagram of lifting appliance fixed assembly in the embodiment of the application;

[0019] Figure 4 It is the local structure schematic diagram of wind power gear box rear box body assembly in the embodiment of the application;

[0020] Figure 5 It is the local structure installation schematic diagram of lifting appliance fixed assembly in the embodiment of the application.

[0021] Fig. 1, wind power gear box rear box body assembly;101, rear box body;102, positioning lug;103, first positioning plate;2, wind power gear box rear cover assembly;201, rear cover body;202, second positioning plate;203, rear cover fixed base;3, lifting appliance fixed assembly;301, lifting appliance fixing plate;302, lifting appliance fixed base;303, first internal hexagon bolt;304, second internal hexagon bolt;4, lifting appliance support assembly;401, right-angle support rod;402, hollow groove;403, lifting appliance adjusting seat;404, first external hexagonal bolt;5, concentric positioning assembly;501, dummy shaft body;502, dummy shaft extension;503, top plate;504, second external hexagonal bolt;6, screw rod;7, support plate;8, spline shaft body. DETAILED DESCRIPTION

[0022] The following will be combined with the Figures 1-5 The application is further described in detail.

[0023] The embodiment of the application discloses a tooling for replacing 2P1H gear box spline shaft motor side bearing tower.

[0024] Please refer toFigure 1 The utility model provides a tool for 2P1H gear box spline shaft motor side bearing tower replacement, including wind power gear box rear body assembly 1, one side of wind power gear box rear body assembly 1 is fixedly installed with wind power gear box rear cover assembly 2, and one side of wind power gear box rear cover assembly 2 is provided with hoist fixed assembly 3, one side of hoist fixed assembly 3 is provided with hoist support assembly 4, and one side of wind power gear box rear cover assembly 2 is provided with concentric positioning assembly 5;

[0025] Please refer to Figures 2 to 5 Hoist support assembly 4, hoist support assembly 4 includes right-angle support rod 401, hollow groove 402, hoist adjusting seat 403 and first outer hexagonal bolt 404, right-angle support rod 401 is fixedly installed on one side of hoist fixed assembly 3 through first outer hexagonal bolt 404, and hollow groove 402 is formed in the inside of right-angle support rod 401, and hoist adjusting seat 403 is fixedly installed at the bottom of right-angle support rod 401.

[0026] Hoist fixed assembly 3 includes hoist fixed plate 301, hoist fixed seat 302 and first inner hexagonal bolt 303, hoist fixed seat 302 is fixedly installed on one side of wind power gear box rear cover assembly 2, one side of hoist fixed seat 302 is fixedly installed with hoist fixed plate 301 through first inner hexagonal bolt 303, and the other side of hoist fixed plate 301 is fixedly installed on one side of hoist fixed seat 302 through second inner hexagonal bolt 304.

[0027] Wind power gear box rear body assembly 1 includes rear body body 101, positioning boss 102 and first positioning plate 103, and wind power gear box rear cover assembly 2 includes rear cover body 201, second positioning plate 202 and rear cover fixed seat 203, rear body body 101 is arranged on one side of wind power gear box rear cover assembly 2, one side of rear body body 101 is fixedly connected with first positioning plate 103, and positioning boss 102 is symmetrically arranged on the top of first positioning plate 103 with right-angle support rod 401 as center, rear cover body 201 is fixedly installed on one side of rear body body 101 through second positioning plate 202, and one side of rear cover body 201 is fixedly connected with rear cover fixed seat 203.

[0028] Concentric positioning assembly 5 includes dummy shaft body 501, dummy shaft extension 502, top plate 503 and second outer hexagonal bolt 504, top plate 503 is fixedly installed on one side of spline shaft body 8 through second outer hexagonal bolt 504, top plate 503 is concentric with dummy shaft body 501, one side of dummy shaft body 501 is fixedly connected with dummy shaft extension 502, and one side of dummy shaft extension 502 movably sleeves support plate 7, one side of support plate 7 is fixedly connected with screw rod 6, and screw rod 6 is fixedly connected on one side of rear cover fixed seat 203.

[0029] The spline shaft body 8 is arranged inside the cavity formed by the wind turbine gearbox rear housing assembly 1 and the wind turbine gearbox rear housing cover assembly 2, the dummy shaft body 501 is arranged directly below the right-angle support rod 401 and the hoist adjusting seat 403, and the length of the dummy shaft body 501 is greater than that of the spline shaft body 8.

[0030] The right-angle support rod 401 is composed of a longitudinal support column and a transverse support column, and the included angle between the longitudinal support column and the transverse support column is 90°, and a plurality of inclined support plates are arranged inside the hollow groove 402.

[0031] A plurality of positioning holes are arranged through the side surface of the hoist adjusting seat 403, and the positioning holes serve as support points of the chain hoist, and the length of the hoist adjusting seat 403 is equal to that of the dummy shaft body 501.

[0032] It needs to be further explained that:

[0033] The hoist support assembly 4:

[0034] The longitudinal support column and the transverse support column of the right-angle support rod 401 form an included angle of 90°, so that stable support force can be provided in multiple directions, and the load during hoisting can be effectively dispersed. The plurality of inclined support plates inside the hollow groove 402 are not simply a weight-reducing design, but serve as a skeletal structure of the human body, which not only reduces the overall weight for easy operation, but also strengthens the structural strength of the support rod to ensure that the support rod will not be deformed when a large tensile force is applied. The hoist adjusting seat 403 at the bottom has a plurality of positioning holes arranged through the side surface, which serve as support points of the chain hoist, greatly facilitating the operator to flexibly adjust the position of the chain hoist according to actual needs, and accurately control the hoisting height and direction. Moreover, the design that the length of the hoist adjusting seat 403 is equal to that of the dummy shaft body 501 ensures the coordination of the tooling in space and avoids interference between components.

[0035] 2, Connection mode of the hoist fixing assembly 3

[0036] In the hoist fixing assembly 3, the hoist fixing seat 302 is stably fixed on one side of the wind turbine gearbox rear housing cover assembly 2, and becomes the root of the entire hoist connection. The hoist fixing plate 301 is tightly fixed on one side of the hoist fixing seat 302 through the first inner hexagonal bolt 303, and this connection mode not only ensures the firmness of the connection, but also facilitates on-site installation and disassembly. The second inner hexagonal bolt 304 further reinforces the other side of the hoist fixing plate 301, forming a double fastening guarantee, so that the hoist will not loosen during hoisting due to shaking, and the operation safety and reliability are ensured.

[0037] 3, Positioning mechanism of the wind turbine gearbox assembly

[0038] The rear housing body 101 of the rear housing assembly 1 of the wind turbine gearbox is precisely butted with the rear housing cover body 101 of the rear housing cover assembly 2 through the first positioning plate 103 and the second positioning plate 202. The positioning protrusions 102 symmetrically arranged on the first positioning plate 103 with the right-angle support rod 401 as the center are like tenons in a mortise structure, and when cooperating with the rear housing cover body 201, they are precisely positioned to ensure that the two are tightly fitted after installation, provide a stable installation environment for the internal components, and also lay a foundation for the precise work of the subsequent concentric positioning assembly 5 and the like.

[0039] 4. The concentric positioning assembly 5 is associated with the spline shaft body 8

[0040] The core of the concentric positioning assembly 5, the dummy shaft body 501, is located directly below the right-angle support rod 401 and the hoist adjusting seat 403, and the design of the concentric top plate 503 is the key to the precision guarantee of the entire tooling. The top plate 503 is firmly fixed on one side of the spline shaft body 8 through the second outer hexagonal bolt 504, so that the spline shaft body 8 can maintain an accurate position during replacement with the dummy shaft body 501 as the reference. The sleeve connection of the dummy shaft extension 502 with the support plate 7 and the connection of the dummy shaft extension 502 with the rear housing cover fixing seat 203 through the screw rod 6 further strengthen the stability of the entire positioning structure, ensuring that the replacement work of the spline shaft motor side bearing tower can be successfully completed under high precision requirements.

[0041] The working principle of the above embodiment is as follows:

[0042] First, in the preparation stage, the wind turbine gearbox rear housing assembly 1 and the wind turbine gearbox rear housing cover assembly 2 are precisely assembled. The rear housing body 101 cooperates with the second positioning plate 202 of the rear housing cover body 201 through the first positioning plate 103 and the positioning protrusions 102, and forms a stable and sealed cavity structure, providing a basic framework for subsequent operations, and also ensuring that the installation positions of the internal components are accurate and correct.

[0043] Next, install the hoist fixing assembly 3. The hoist fixing seat 302 is firmly fixed on one side of the wind turbine gearbox rear housing cover assembly 2, the hoist fixing plate 301 is stably connected to the hoist fixing seat 302 through the first inner hexagonal bolt 303, and the second inner hexagonal bolt 304 is used for secondary reinforcement, thereby building a reliable connection part for hoisting operation, so that the subsequent lifting operation can be safely and stably performed.

[0044] Subsequently, the lifting tool support assembly 4 is built. The right-angle support rod 401 is fixed to one side of the lifting tool fixing assembly 3 by the first outer hexagonal bolt 404. The right-angle support rod 401 effectively disperses the pressure from hoisting by virtue of its unique longitudinal and transverse 90° angle structure. The inclined support plate in the hollow groove 402 strengthens the strength of the support rod itself. The bottom lifting tool adjusting seat 403 takes a plurality of positioning holes as the support points of the chain hoist, so as to facilitate the operator to flexibly adjust the hoisting position and direction, and provide solid support guarantee for the whole hoisting process.

[0045] Then, the concentric positioning assembly 5 is installed. The top plate 503 is tightly fixed on one side of the spline shaft body 8 by the second outer hexagonal bolt 504, so as to ensure that the top plate 503 is concentric with the dummy shaft body 501. The dummy shaft body 501 is directly below the right-angle support rod 401 and the lifting tool adjusting seat 403, and its length is greater than that of the spline shaft body 8, so as to provide accurate positioning reference for spline shaft body 8 replacement. The dummy shaft extension body 502 is sleeved with the support plate 7, and then connected with the rear box cover fixing seat 203 through the screw rod 6, so as to further stabilize the whole positioning structure and keep the spline shaft in the correct position during replacement.

[0046] During actual replacement of the spline shaft motor side bearing tower, the lifting tool is used in cooperation with the lifting tool fixing assembly 3 and the lifting tool support assembly 4 to hoist the component to be replaced by tools such as chain hoists. Due to the accurate positioning and stable support of each assembly, the spline shaft body 8 and its related components can always maintain in the correct position during the removal of the old bearing tower and the installation of the new bearing tower, so as to avoid installation errors caused by displacement, shaking and other factors, thereby efficiently and accurately completing the replacement work.

[0047] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tooling for 2P1H gearbox spline shaft motor side bearing tower replacement, comprising a wind power gearbox rear housing assembly (1), characterized in that: The wind power gear box rear box body assembly (1) is fixedly installed on one side of the wind power gear box rear box cover assembly (2), one side of the wind power gear box rear box cover assembly (2) is provided with a lifting appliance fixing assembly (3), one side of the lifting appliance fixing assembly (3) is provided with a lifting appliance supporting assembly (4), and one side of the wind power gear box rear box cover assembly (2) is provided with a concentric positioning assembly (5). The lifting appliance supporting assembly (4) comprises a right-angle supporting rod (401), a hollow groove (402), a lifting appliance adjusting seat (403) and a first outer hexagonal bolt (404), the right-angle supporting rod (401) is fixedly installed on one side of the lifting appliance fixing assembly (3) through the first outer hexagonal bolt (404), the inside of the right-angle supporting rod (401) is provided with the hollow groove (402), and the bottom of the right-angle supporting rod (401) is fixedly installed with the lifting appliance adjusting seat (403).

2. A tooling for 2P1H gearbox spline shaft motor side bearing tower replacement according to claim 1, characterized in that: The lifting appliance fixing assembly (3) comprises a lifting appliance fixing plate (301), a lifting appliance fixing seat (302) and a first inner hexagonal bolt (303), the lifting appliance fixing seat (302) is fixedly installed on one side of the wind power gear box rear box cover assembly (2), one side of the lifting appliance fixing seat (302) is fixedly installed with the lifting appliance fixing plate (301) through the first inner hexagonal bolt (303), and the other side of the lifting appliance fixing plate (301) is fixedly installed on one side of the lifting appliance fixing seat (302) through the second inner hexagonal bolt (304).

3. A tooling for 2P1H gearbox spline shaft motor side bearing tower replacement according to claim 1, characterized in that: The wind power gear box rear box body assembly (1) comprises a rear box body (101), a positioning protrusion (102) and a first positioning plate (103), the wind power gear box rear box cover assembly (2) comprises a rear box cover body (201), a second positioning plate (202) and a rear box cover fixing seat (203), the rear box body (101) is arranged on one side of the wind power gear box rear box cover assembly (2), one side of the rear box body (101) is fixedly connected with the first positioning plate (103), the top of the first positioning plate (103) is symmetrically provided with the positioning protrusion (102) with the right-angle supporting rod (401) as the center, the rear box cover body (201) is fixedly installed on one side of the rear box body (101) through the second positioning plate (202), and one side of the rear box cover body (201) is fixedly connected with the rear box cover fixing seat (203).

4. A tooling for 2P1H gearbox spline shaft motor side bearing tower replacement according to claim 1, characterized in that: The concentric positioning assembly (5) comprises a shaft body (501), a shaft extension body (502), a top plate (503) and a second outer hexagonal bolt (504), the top plate (503) is fixedly installed on one side of the spline shaft body (8) through the second outer hexagonal bolt (504), the top plate (503) is concentric with the shaft body (501), one side of the shaft body (501) is fixedly connected with the shaft extension body (502), one side of the shaft extension body (502) is movably sleeved with a supporting plate (7), and one side of the supporting plate (7) is fixedly connected with a screw rod (6).

5. A tooling for 2P1H gearbox spline shaft motor side bearing tower replacement according to claim 4, characterized in that: The spline shaft body (8) is arranged inside the cavity formed by the wind power gear box rear box body assembly (1) and the wind power gear box rear box cover assembly (2), the dummy shaft body (501) is arranged directly below the right-angle supporting rod (401) and the lifting appliance adjusting seat (403), and the length of the dummy shaft body (501) is greater than that of the spline shaft body (8).

6. A tooling for 2P1H gearbox spline shaft motor side bearing tower replacement according to claim 1, characterized in that: The right-angle supporting rod (401) is composed of a longitudinal supporting column and a transverse supporting column, and the included angle between the longitudinal supporting column and the transverse supporting column is 90°, and a plurality of inclined supporting plates are arranged inside the hollow groove (402).

7. A tooling for 2P1H gearbox spline shaft motor side bearing tower replacement according to claim 1, characterized in that: A plurality of positioning holes are arranged through the side surface of the lifting appliance adjusting seat (403), the positioning holes serve as supporting points of the chain hoist, and the length of the lifting appliance adjusting seat (403) is equal to that of the dummy shaft body (501).

Images