Portable operation and maintenance hoisting device in wind power generator cabin

Abstract

The invention discloses a wind driven generator operation and maintenance hoisting device which comprises a clamping device used for being matched with the edge of a through hole in a rotating platform for fixing, a fixed pulley mechanism arranged on the clamping device, and an overrun clutch arranged between the fixed pulley mechanism and the clamping mechanism. The overrun clutch is arranged on the fixed pulley mechanism, the fixed pulley mechanism forms one-way transmission through the overrun clutch, a pull rope is wound on the fixed pulley mechanism and used for hanging and pulling a to-be-conveyed component, and the pull rope is pulled in a one-way mode through the fixed pulley mechanism; the pull rope is wound on the fixed pulley mechanism for at least one circle; the clamping device comprises a fixing seat used for being connected with the fixed pulley mechanism and a folding support installed on the fixing seat, and the overrunning clutch is arranged on the fixing seat and matched with the fixed pulley mechanism. The folding support is used for folding, carrying and using can be convenient, and the overrunning clutch is matched, so that higher safety can be achieved.

Description

Technical Field

[0001] The invention relates to a wind turbine generator, in particular to a portable wind turbine generator in-cabin operation and maintenance hoisting device. Background Art

[0002] The internal space of a wind turbine is relatively small, and it is difficult to move some parts, and the operation inside is also difficult. Generally, the components of a wind turbine are distributed from bottom to top, including at least a base, a cabin, a generator set, and blades. The base will have a base platform for workers to stand on, and the cabin and the base are in a rotatable connection. There will be a rotating platform at the corresponding rotating position, and the rotating platform has a brake block to limit the rotation of the cabin. The base platform can be used to inspect the position of the rotating platform, and the rotating platform can be used to inspect the generator set. The rotating platform will have a through hole connected to the base platform for maintenance personnel to climb, and there will be a cross bar at the position corresponding to the base platform below the rotating platform for users to climb.

[0003] Due to space limitations, the internal structure for climbing is relatively simple, using only fixed cross bars for stepping and grasping, so that maintenance personnel can climb from the base platform to the rotating platform. However, this climbing action is difficult when trying to move heavy parts for maintenance work, and there are also great safety hazards. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a portable wind turbine cabin operation and maintenance hoisting device, which can be convenient for workers to carry and install and to hoist components inside the wind turbine cabin.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wind turbine operation and maintenance hoisting device, comprising a clamping device for fixing with the edge of a through hole on a rotating platform, and a fixed pulley mechanism arranged on the clamping device, an overrunning clutch is arranged between the fixed pulley mechanism and the clamping mechanism, and the fixed pulley mechanism forms a one-way transmission through the overrunning clutch, a pull rope is wound around the fixed pulley mechanism, and is used to suspend and pull the parts to be transported, and the pull rope is pulled unidirectionally through the fixed pulley mechanism; the pull rope is wound around the fixed pulley mechanism for at least one complete circle; The clamping device comprises a fixed seat for connecting a fixed pulley mechanism, a folding bracket installed on the fixed seat, the overrunning clutch is arranged on the fixed seat and cooperates with the fixed pulley mechanism; the folding bracket comprises a movable rod hinged to the fixed seat and a support rod hinged to the movable rod, a buffer assembly is detachably connected to the support rod, a position corresponding to the movable rod on the fixed seat is provided with a limiter for limiting the maximum opening angle of the movable rod, the maximum unfolding angle between the support rod and the movable rod is 180°, and the support rod cooperates with the movable rod to flip and fold from the outside to the inside; The buffer assembly includes a shock absorber for matching the support rod, a support foot arranged at the end of the shock absorber, and a hinge connected to the support foot and the support rod, wherein the two ends of the hinge are rotatably connected to the support foot and the support rod respectively by bolts; one end of the shock absorber corresponding to the support rod is rotatably connected to the support rod; The number of the folding brackets is at least four and is evenly distributed on the upper and lower sides of the rotating platform, and the number of the buffer components corresponds to the number of the support rods; The fixing seat is clamped on the rotating platform through the cooperation of the shock absorbers and the supporting feet on the upper and lower sides of the rotating platform.

[0006] As a further improvement of the present invention, the number of the hinged parts is two, which are connected to the supporting foot and the supporting rod in the same way, and the two hinged parts are parallel to each other.

[0007] As a further improvement of the present invention, the supporting foot is L-shaped, forming a connecting section and a contact section, the contact section is used to cooperate with the ground contact, and the position of contact with the ground is arc-shaped, and the connecting section is used to cooperate with the hinge and the shock absorber connection.

[0008] As a further improvement of the present invention, the contact section of the supporting foot is provided with an abutment block, and the position where the abutment block contacts the ground is provided with anti-slip grooves. The contact section is provided with a long strip of through holes at the position corresponding to the abutment block. The abutment block is installed on the contact section by bolts and the through holes. The abutment block and the contact section can slide relative to each other, and the maximum sliding stroke is limited by the cooperation of the bolts and the through holes.

[0009] As a further improvement of the present invention, an arc-shaped groove matching with the contact segment is provided at the position of the abutting block abutting against the contact segment, and the contact segment slides in cooperation with the arc-shaped groove.

[0010] The beneficial effect of the present invention is that the overrunning clutch can prevent the pull rope from falling off and realize one-way rotation. The staff can pull the pull rope up, but the part to be delivered will be restricted from falling by the overrunning clutch, which is safer and convenient for users to operate. It is convenient for staff to use it in a small space and is also convenient to carry for climbing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the installation position of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 It is a side view structural schematic diagram of the present invention; Figure 4 for Figure 3 Enlarged view of part A in .

[0012] Figure numbers: 1. rotating platform; 2. clamping device; 21. fixed seat; 22. folding bracket; 221. support rod; 222. movable rod; 223. buffer assembly; 2231. shock absorber; 2232. supporting foot; 22321. connecting section; 22322. contact section; 2233. hinge; 23. abutment block; 231. arc groove; 3. fixed pulley mechanism; 4. overrunning clutch. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the embodiments given in the accompanying drawings.

[0014] Reference Figure 1-4 As shown, A wind turbine operation and maintenance hoisting device, comprising a clamping device 2 for fixing with the edge of a through hole on a rotating platform 1, a fixed pulley mechanism 3 arranged on the clamping device 2, an overrunning clutch 4 is arranged between the fixed pulley mechanism 3 and the clamping mechanism, and the fixed pulley mechanism 3 forms a one-way transmission through the overrunning clutch 4, a pull rope is wound around the fixed pulley mechanism 3, and is used to suspend and pull the parts to be transported, and the pull rope is pulled unidirectionally through the fixed pulley mechanism 3; the pull rope is wound around the fixed pulley mechanism 3 for at least one complete circle; The clamping device 2 includes a fixed seat 21 for connecting the fixed pulley mechanism 3, a folding bracket 22 installed on the fixed seat 21, and the overrunning clutch 4 is arranged on the fixed seat 21 and cooperates with the fixed pulley mechanism 3; the folding bracket 22 includes a movable rod 222 hinged to the fixed seat 21 and a support rod 221 hinged to the movable rod 222, a buffer assembly 223 is detachably connected to the support rod 221, and a position limiter for limiting the maximum opening angle of the movable rod 222 is arranged at a position corresponding to the movable rod 222 on the fixed seat 21, the maximum unfolding angle of the support rod 221 and the movable rod 222 is 180°, and the support rod 221 cooperates with the movable rod 222 to flip and fold from the outside to the inside; The buffer assembly 223 includes a shock absorber 2231 for connecting with the support rod 221, a support foot 2232 arranged at the end of the shock absorber 2231, and a hinge 2233 connected to the support foot 2232 and the support rod 221. The two ends of the hinge 2233 are rotatably connected to the support foot 2232 and the support rod 221 respectively by bolts; one end of the shock absorber 2231 corresponding to the support rod 221 is rotatably connected to the support rod 221; The number of the folding brackets 22 is at least four and is evenly distributed on the upper and lower sides of the rotating platform 1. The number of the buffer components 223 corresponds to the number of the support rods 221. The fixing seat 21 is clamped on the rotating platform 1 through the cooperation of the shock absorbers 2231 and the supporting feet 2232 on the upper and lower sides of the rotating platform 1 .

[0015] The rotating platform 1 on the wind turbine has a horizontal bar for workers to climb, and after the workers climb up, there will be a platform for workers to stand and operate. This platform is generally annular with a hole in the middle, which is convenient for installing components and for workers to enter and exit. This structure can be used to install the clamping device 2 in this solution. The clamping device 2 is clamped and fixed on the edge of the annular platform, and the thickness of the platform is used for clamping. The fixed pulley mechanism 3 is used to pull the pull rope, and the pull rope is used to pull the part to be sent up. The overrunning clutch 4 can prevent the pull rope from falling off and realize one-way rotation. The staff can pull the pull rope, but the part to be sent will be restricted from falling by the overrunning clutch 4, which is safer and more convenient for users to operate. This solution does not use electric or other means for driving in order to reduce weight and volume, so that it is convenient for workers to use in a small space and also convenient to carry and climb.

[0016] During specific use, in the initial state, the folding bracket 22 is in a folded state, the support rod 221 is folded inwardly, and the movable rod 222 can move within a certain range to adjust the storage state, adapt to more storage environments, and reduce the occupied volume. When needed, the support rod 221 is opened, and the setting of the buffer assembly 223 can provide a certain elastic force. When the clamping device 2 needs to be installed on the platform, the four support rods 221 are first opened, two on the upper and lower sides of the platform, and the positions of the upper and lower support rods 221 correspond to each other to form a clamping effect, and support is provided by the elastic force provided by the shock absorber 2231 and the hinge 2233. Based on the support and the elastic force of the shock absorber 2231, it can act on the platform to achieve a clamping effect. Of course, the number of support rods 221 and buffer assemblies 223 can be further increased to improve stability. For example, there are four on each side of the upper and lower sides of the platform, and the upper and lower positions correspond to each other, forming a more stable clamping effect. When the elastic force of the shock absorber 2231 cooperates with the support of the hinge 2233, it is necessary to cooperate with the limit between the support rod 221 and the movable rod 222. For this reason, the present scheme limits the maximum expansion angle between the support rod 221 and the movable rod 222 to 180°. When rotating to this angle, the ends of the support rod 221 and the movable rod 222 abut against each other, so that the support rod 221 and the movable rod 222 will not continue to rotate, thereby reaching the angle limit. As shown in the reference figure, based on this structure, when clamping, the support force of the platform and the downward pressure of the support rod 221 are received. At this time, the shock absorber 2231 is compressed, and the position of the support rod 221 is adjusted in conjunction with the hinge 2233. On the one hand, the strength is increased, and on the other hand, the support force is provided with the help of the hinge 2233. In fact, the shock absorber 2231 can achieve the clamping effect by adjusting the support elastic force. For example, the support elastic force of the shock absorber 2231 is adjusted first to put the shock absorber 2231 in a contracted state. At this time, a gap will also be generated between the relative support legs 2232 and the platform, which is convenient for the support rod 221 and the support The feet 2232 are placed on the upper and lower sides of the platform, and then the shock absorber 2231 is adjusted to be in an extended state. At this time, the supporting feet 2232 can press the surface of the platform. The supporting feet 2232 on the upper and lower sides of the platform can interact with each other to provide clamping force, thereby producing a fixing effect, and at the same time can cooperate with the shock absorber 2231 to provide a buffering effect, which has the effect of alleviating looseness. In fact, the platform is generally pre-installed with lifting rings, and the parts can be bundled through the lifting rings. In this solution, the lifting rings on the platform can be used to provide an upward pulling force for the fixing seat 21, thereby further ensuring safety.

[0017] The shock absorber 2231 can adopt a spring shock absorber 2231. The spring shock absorber 2231 will have an adjusting nut for adjusting the compression of the spring. In the application of this solution, the compression of the spring can be reduced first to facilitate installation on the upper and lower sides of the platform, and then the compression of the spring can be adjusted by rotating the adjusting nut, and then clamped on the platform, providing higher stability and making installation more convenient.

[0018] In the preferred solution, there are two hinges 2233, and the two hinges 2233 guide the relative swing direction of the supporting leg 2232. Because the shock absorber 2231 will cause the position of the supporting leg to have a relative swing while providing an elastic clamping platform, there will also be a certain up and down swing in the process of pulling the pull rope. At this time, the cooperation of the two hinges 2233 can make the buffering effect more stable, and the swing direction can be coordinated and guided by the rotation of the two hinges 2233.

[0019] In a further configuration, the supporting foot 2232 is L-shaped, forming a connecting section 22321 and a contact section 22322, the contact section 22322 is used to cooperate with the ground contact, and the position of contact with the ground is arc-shaped, and the connecting section 22321 is used to cooperate with the hinge 2233 and the shock absorber 2231 to connect.

[0020] The L-shaped support foot 2232 can provide better support effect while facilitating installation, especially since the contact section 22322 is arc-shaped. As the deflection movement occurs, the arc-shaped surface can provide a more stable support point, and even if the deflection produces an angle change, a better support point can be provided.

[0021] The contact section 22322 of the supporting foot 2232 is provided with an abutment block 23, and the position where the abutment block 23 contacts the ground is provided with anti-slip grooves. The contact section 22322 is provided with a long strip of through hole at the position corresponding to the abutment block 23. The abutment block 23 is installed on the contact section 22322 by bolts and the through hole. The abutment block 23 and the contact section 22322 can slide relative to each other, and the maximum sliding stroke is limited by the cooperation of the bolts and the through hole.

[0022] The function of the abutment block 23 is to form a better contact with the surface of the platform, provide a better anti-skid effect, and the contact area with the platform surface will be larger. In addition, the long through hole can provide a bolt activity space when the angle between the contact section 22322 and the abutment block 23 changes, and the bolt can limit the contact section 22322 and the abutment block 23 from disengaging. By using the anti-skid pattern and the pressure received by the abutment block 23, the abutment block 23 can be in a relatively stable state on the platform surface. When matched, the through hole and the bolt can produce a relatively stable guiding effect. When the relative angle between the contact section 22322 and the abutment block 23 changes, other state changes can be alleviated, such as the displacement of the abutment block 23, the position change of the fixed pulley mechanism 3, etc. In addition, by using the cooperation of the through hole and the bolt, the maximum sliding stroke limit is generated, which can avoid the problem of the abutment block 23 and the contact section 22322 being disengaged due to exceeding the sliding stroke, thereby reducing safety hazards.

[0023] An arc-shaped groove 231 adapted to the contact segment 22322 is provided at a position of the abutting block 23 abutting against the contact segment 22322 , and the contact segment 22322 slides in cooperation with the arc-shaped groove 231 .

[0024] The arc-shaped groove 231 can form a better fit with the abutment section. On the one hand, it can increase the contact area between the abutment section and distribute the pressure. On the other hand, it can provide certain lateral support. After the angle of the contact section 22322 changes, it can also provide better support and increase the stability of the support.

[0025] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A portable wind turbine cabin maintenance hoisting device, characterized in that: It comprises a clamping device for fixing with the edge of the through hole on the rotating platform, and a fixed pulley mechanism arranged on the clamping device, an overrunning clutch is arranged between the fixed pulley mechanism and the clamping mechanism, and the fixed pulley mechanism forms a one-way transmission through the overrunning clutch, a pull rope is wound around the fixed pulley mechanism, and is used to hang and pull the part to be sent, and the pull rope is pulled unidirectionally through the fixed pulley mechanism; the pull rope is wound around the fixed pulley mechanism for at least one complete circle; The clamping device comprises a fixed seat for connecting a fixed pulley mechanism, a folding bracket installed on the fixed seat, the overrunning clutch is arranged on the fixed seat and cooperates with the fixed pulley mechanism; the folding bracket comprises a movable rod hinged to the fixed seat and a support rod hinged to the movable rod, a buffer assembly is detachably connected to the support rod, a position corresponding to the movable rod on the fixed seat is provided with a limiter for limiting the maximum opening angle of the movable rod, the maximum unfolding angle between the support rod and the movable rod is 180°, and the support rod cooperates with the movable rod to flip and fold from the outside to the inside; The buffer assembly includes a shock absorber for matching the support rod, a support foot arranged at the end of the shock absorber, and a hinge connected to the support foot and the support rod, wherein the two ends of the hinge are rotatably connected to the support foot and the support rod respectively by bolts; one end of the shock absorber corresponding to the support rod is rotatably connected to the support rod; The number of the folding brackets is at least four and is evenly distributed on the upper and lower sides of the rotating platform, and the number of the buffer components corresponds to the number of the support rods; The fixing seat is clamped on the rotating platform through the cooperation of the shock absorbers and the supporting feet on the upper and lower sides of the rotating platform.

2. The portable wind turbine cabin maintenance hoisting device according to claim 1 is characterized in that: There are two hinged parts, which are connected to the support foot and the support rod in the same way, and the two hinged parts are parallel to each other.

3. The portable wind turbine cabin maintenance hoisting device according to claim 2 is characterized in that: The support foot is L-shaped, and comprises a connecting section and a contact section. The contact section is used for contacting the ground, and the position contacting the ground is arc-shaped. The connecting section is used for connecting with the hinge and the shock absorber.

4. The portable wind turbine cabin maintenance hoisting device according to claim 3 is characterized in that: The contact section of the supporting foot is provided with an abutment block, and the position where the abutment block contacts the ground is provided with anti-slip grooves. The position of the contact section corresponding to the abutment block is provided with an elongated through hole. The abutment block is installed on the contact section by bolts and the through holes. The abutment block and the contact section can slide relative to each other, and the maximum sliding stroke is limited by the cooperation of the bolts and the through holes.

5. The portable wind turbine cabin maintenance hoisting device according to claim 4 is characterized in that: An arc-shaped groove matching the contact segment is arranged on the abutment block at a position abutting against the contact segment, and the contact segment slides in cooperation with the arc-shaped groove.

Images