An elevator device

Abstract

The utility model discloses a hoist device relates to hoist field. Hoist device includes hoist body, accomodation box, chain and operating handle, and hoist body installs at the fixed node department on the building wall surface, and accomodation box sets up at ground side, and accomodation box is spaced apart with hoist body and sets up. The accomodation box and hoist body of the present application are spaced apart, and specifically, one sets up at the fixed node department on the building wall surface, and one sets up at ground side, and the problem of accomodation box and hoist body frequent collision caused by cabin sway can be solved, the durability and operation reliability of lifting equipment are improved. The heavy accomodation box and the chain weight accumulated therein are transferred from the cabin in the air to the ground, the load of the cabin is reduced, the risk of cabin cover rupture caused by excessive load is reduced, and the safety of the overall system is improved.

Description

Technical Field

[0001] This utility model relates to the field of hoists, and specifically to a hoist device. Background Technology

[0002] Wind energy, as a clean and renewable energy source, has seen rapid development in the wind power industry in recent years. The installation and maintenance of wind turbine generators often require the use of hoists for material handling. Currently, wind turbine generators typically employ electric hoisting devices fixed to the nacelle's lifting port, such as... Figure 1 As shown, due to the continuous shaking of the nacelle during wind turbine operation, the traditional design of installing the storage box and the hoist shell directly adjacent to each other leads to frequent collisions, which can easily cause structural damage to the hoist over time. Simultaneously, during retrieval, the chain can easily accumulate disorderly inside the storage box and overflow outside. If operators attempt to forcibly pull the chain, it may suddenly fall due to gravity, causing serious personal injury. Installing the storage box and hoist together inside the upper nacelle cover not only increases the load on the upper nacelle but also poses a risk of the nacelle cover breaking due to excessive weight. Therefore, the safety and operational reliability of the equipment need to be improved. Utility Model Content

[0003] In view of this, the present invention provides a hoisting device to solve the problems mentioned in the background art.

[0004] This utility model provides a hoisting device, comprising: The hoist body is installed at a fixed node on the building wall; A storage box is located on the ground side, spaced apart from the hoist body; A chain, one end of which is fixed inside the storage box, and the other end extends through the hoist body to hook an object; the middle section of the chain is wound around the hoist body. The operating handle is electrically connected to the control box inside the hoist body to control the length of the chain that passes through the hoist body.

[0005] Beneficial Effects: By spaced the retrieval box and the hoist body apart—specifically, one positioned at a fixed node on the building wall and the other on the ground—the frequent collisions between the retrieval box and the hoist body caused by nacelle movement are mitigated, improving the equipment's durability and operational reliability. This application transfers the weight of the heavy retrieval box and the chain piled inside from the high-altitude nacelle to the ground, reducing the load on the nacelle, lowering the risk of the nacelle cover breaking due to excessive weight, and improving the overall system safety. With one end of the chain fixed inside the ground-based retrieval box, it is more convenient for operators to operate and observe the chain retrieval process from the ground. Installation and maintenance are also more flexible and convenient. Even if the chain jams during retrieval, handling it from the ground is far safer than forcibly pulling it from the high-altitude nacelle, effectively preventing personal injury accidents caused by the chain suddenly falling.

[0006] In some embodiments, the hoisting device further includes a chain guide tube, the upper end of which is connected to the chain channel groove of the hoisting body, and the lower end of which extends to the top opening of the storage box.

[0007] Beneficial effects: The guide pipe establishes a closed, continuous transmission channel between the hoist body and the collection box, forcibly guiding the chain to move along a predetermined path. This effectively prevents the chain from swaying, swinging, or piling up in the air during retrieval, ensuring its accurate and orderly return to the ground collection box. The chain's movement within the pipe avoids scratching or colliding with the external environment or other structures, reducing chain wear and extending its service life. The enclosed pipe isolates the moving chain from the surrounding environment, reducing the risk of personnel accidentally contacting moving parts or being injured by the chain.

[0008] In some embodiments, the guide tube is a flexible hose or a rigid conduit composed of multiple movable joints.

[0009] Beneficial effects: The use of flexible hoses or rigid conduits with movable joints allows the chain guide tube to be bent and adjusted according to the actual installation position and space on site, easily adapting to the differences in the height of different wind turbine nacelles and the position of the lifting holes, improving the versatility and ease of installation of the device; the flexible hoses have a vibration damping effect, which can absorb and buffer the vibration transmitted from the nacelle sway, thus protecting the chain.

[0010] In some embodiments, the inner diameter of the guide tube is larger than the maximum outer dimension of the chain link, and the inner wall of the guide tube is provided with a polytetrafluoroethylene layer.

[0011] Beneficial effects: The inner diameter of the guide tube is larger than the maximum outer dimension of the chain, thus providing ample space for the chain to move inside the tube, effectively avoiding jamming that may occur due to chain twisting or tilting, and ensuring smooth lifting operations; the PTFE layer has an extremely low coefficient of friction and self-lubricating properties, which can reduce the frictional resistance between the chain and the tube wall, which helps to reduce the load energy consumption of the hoist, and also reduces the wear of the chain and guide tube themselves, extending their service life.

[0012] In some embodiments, the top of the storage box is provided with a guide cover, the chain passes through the guide cover, and the lower end of the guide chain tube is fixedly connected to the upper port of the guide cover.

[0013] Beneficial effects: As a guiding structure for the chain to enter the storage box, the guide cover continuously guides the chain inside the guide tube into the storage box, which helps prevent the chain from hitting the storage box due to inertia or swinging, thus ensuring the stability of recycling; in addition, it also prevents external impurities from falling into the storage box from the upper port of the guide cover.

[0014] In some embodiments, the guide cover is configured as a U-shaped structure, and the two ends of the guide cover are fixedly disposed to the outer wall surface of the storage box.

[0015] Beneficial effects: The U-shaped structure design allows for sufficient connection area between the guide cover and the storage box, which helps to improve the connection strength.

[0016] In some embodiments, the bottom of the hoist body is provided with a first channel groove and a second channel groove that are spaced apart from each other, and the chain is movably passed through the first channel groove and the second channel groove.

[0017] Beneficial effects: The first and second channel slots provide clearance for the chain to enter and exit the hoist body, avoiding contact resistance and ensuring the smoothness of chain transmission.

[0018] In some embodiments, the hoist body is provided with a hook ring, which is fixedly connected to the top outer wall surface of the hoist body.

[0019] Beneficial effects: The hook ring can be used as an auxiliary hooking and positioning device. During installation, in addition to fixing the hoist body, steel wire ropes or other materials can be passed through the hook ring for auxiliary fixing or insurance, thereby enhancing the installation stability of the hoist body in a vibration environment, preventing it from falling off accidentally, and improving safety.

[0020] In some embodiments, the storage box has a fixing wing at the bottom, and the fixing wing has a plurality of fixing holes.

[0021] Beneficial effects: The combination of fixed wings and fixing holes allows the storage box to be firmly fixed to the ground foundation using anchor bolts, etc.; it can effectively ensure the stability and safety of the ground part of the structure when withstanding the impact force that may be generated during chain recycling, and when preventing the box from being kicked or accidentally tipped over.

[0022] In some embodiments, the chain has a hook at the end away from the storage box.

[0023] Beneficial effects: The hook provides a convenient interface for lifting, allowing operators to quickly and safely attach and detach lifting materials, simplifying the operation process and improving the efficiency of lifting operations. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a structural diagram of a hoisting device in related technologies; Figure 2 This is a structural diagram of the hoisting device in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the bottom of the storage box in the hoisting device in this embodiment of the utility model.

[0026] Explanation of reference numerals in the attached figures: 1. Hoist body; 101. Hook ring; 2. Storage box; 201. Fixed wing; 3. Chain; 301. Hook part; 4. Operating handle; 5. Chain guide tube; 6. Guide cover. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] See Figure 1Because the nacelle sways continuously during wind turbine operation, the traditional design, which places the storage box and the hoist shell directly adjacent to each other, easily leads to frequent collisions and long-term damage to the hoist structure. Simultaneously, during retrieval, the chain can easily accumulate disorderly inside the storage box and overflow. If operators attempt to forcibly pull the chain, it may suddenly fall due to gravity, causing serious personal injury. The traditional design, which installs the storage box and hoist together inside the upper nacelle cover, increases the load on the upper nacelle and poses a risk of the cover breaking due to excessive weight. Therefore, it is necessary to improve the safety and operational reliability of the equipment.

[0029] The present invention aims to provide an optimized solution that can effectively isolate the chain storage section from the hoist body, improve chain guiding and storage capacity, and reasonably distribute the load-bearing capacity, so as to improve the safety and operational reliability of the device.

[0030] The following is combined Figure 2 and Figure 3 The following describes embodiments of the present invention.

[0031] According to an embodiment of this utility model, a hoisting device is provided, see [link to relevant documentation]. Figure 2 The hoisting device includes a hoisting body 1, a storage box 2, a chain 3, and an operating handle 4. The hoisting body 1 is installed at a fixed node on the building wall, such as the inner wall or the outer facade of the building. The storage box 2 is located on the ground side and is spaced apart from the hoisting body 1.

[0032] In this embodiment, one end of the chain 3 is fixed inside the storage box 2, and the other end extends through the hoist body 1 to hang objects; the middle section of the chain 3 is wound inside the hoist body 1; the operating handle 4 is electrically or signal connected to the control box inside the hoist body 1 to control the length of the chain 3 extending out of the hoist body 1.

[0033] Specifically, the hoist body 1 is equipped with a drive motor and a drum. The drive motor is fixed inside the hoist body 1 and connected to a power supply. The drum is coaxially fixed on the drive shaft of the drive motor, and the middle section of the chain 3 is wound around the outer circumference of the drum. When an object is attached to the end of the chain 3 away from the storage box 2, the length of the side of the chain 3 that is attached to the object shortens when the drive motor rotates forward, and the chain 3 is gradually delivered into the storage box 2, and the object is in a lifting state. When the drive motor rotates in reverse, the length of the side of the chain 3 that is attached to the object extends, and the chain 3 gradually extends out of the storage box 2, and the object is in a lowering state.

[0034] The hoisting device provided in this embodiment sets up the storage box 2 and the hoisting body 1 alternately. Specifically, one is set at a fixed node on the building wall, and the other is set on the ground side. This solves the problem of frequent collisions between the storage box 2 and the hoisting body 1 caused by the shaking of the nacelle, improving the durability and operational reliability of the equipment. The weight of the heavy storage box 2 and the chain 3 piled inside it is transferred from the high-altitude nacelle to the ground, reducing the load on the nacelle, lowering the risk of the nacelle cover breaking due to excessive weight, and improving the overall system safety. With one end of the chain 3 fixed inside the storage box 2 on the ground, it is more convenient for operators to operate and observe the chain 3 retrieval process from the ground. Installation and maintenance are also more flexible and convenient. Even if the chain 3 gets stuck during retrieval, it is much safer for personnel to handle it from the ground than to forcibly pull it from the high-altitude nacelle, effectively avoiding personal injury accidents caused by the sudden fall of the chain 3.

[0035] In a specific embodiment, see Figure 2 The hoist body 1 is equipped with a hook ring 101, which is fixedly connected to the top outer wall of the hoist body 1. The hook ring 101 can be used as an auxiliary hooking and positioning device. During installation, in addition to fixing the hoist body 1, steel wire ropes or similar materials can be passed through the hook ring 101 for auxiliary fixing or safety, thereby enhancing the installation stability of the hoist body 1 in a vibration environment, preventing accidental detachment, and improving safety.

[0036] In a specific embodiment, the bottom of the hoist body 1 is provided with a first channel groove and a second channel groove arranged at intervals, and the chain 3 is movably passed through the first channel groove and the second channel groove. The first channel groove and the second channel groove provide clearance space for the chain 3 to enter and exit the hoist body 1, avoid contact resistance, and ensure the smoothness of chain 3 transmission.

[0037] In a specific embodiment, see Figure 2 and Figure 3 The storage box 2 has a fixed wing 201 at the bottom, and the fixed wing 201 has several fixing holes. The fixed wing 201 is set outward from the inside of the storage box 2. Through the combination design of the fixed wing 201 and the fixing holes, the storage box 2 can be firmly fixed to the ground foundation by anchor bolts, etc.; when bearing the impact force that may be generated when the chain 3 is retracted, and when preventing the box from being kicked or accidentally tipped over, it can effectively ensure the stability and safety of the ground part of the structure.

[0038] In a specific embodiment, a rubber cushioning pad can be installed at the bottom of the storage box 2. The rubber cushioning pad serves to buffer and absorb shock, reducing the impact of vibration when the chain 3 is extended or retracted.

[0039] In a specific embodiment, the inner wall of the storage box 2 is provided with a cushioning liner, which is a rubber or polyurethane layer. The cushioning liner cushions and protects the chain 3 from the box body of the storage box 2, reducing the impact force between the two.

[0040] In a specific embodiment, see Figure 2 The chain 3 has a hook 301 at the end away from the storage box 2. The hook 301 provides a convenient lifting interface, allowing operators to quickly and safely attach and detach lifting materials, simplifying the operation process and improving the efficiency of lifting operations.

[0041] In a specific embodiment, the operating handle 4 can be configured as a wired handle, which includes a handle housing, control buttons and a connecting cable. The control buttons are located on the panel of the handle housing, and the connecting cable is led out from the handle and directly connected to the control box inside the hoist body 1. The control buttons include four basic buttons: an open / close button, an up button and a down button. The open / close button is used to control the connection or disconnection of the drive motor and the power supply. The up button is used to control the forward rotation of the drive motor, and the down button is used to control the reverse rotation of the drive motor.

[0042] In a further embodiment, see Figure 2 The hoisting device also includes a chain guide pipe 5. The upper end of the chain guide pipe 5 is connected to the chain channel groove of the hoisting body 1, and the lower end extends to the top opening of the storage box 2. The chain guide pipe 5 establishes a closed and continuous transmission channel between the hoisting body 1 and the storage box 2, forcibly guiding the chain 3 to move along a predetermined path. This effectively prevents the chain 3 from swaying, swinging, or piling up in the air during the retrieval process, ensuring that it can return to the ground storage box 2 accurately and orderly. The movement of the chain 3 within the pipe avoids scratching or colliding with the external environment or other structures, reducing wear on the chain 3 and extending its service life. The closed pipe isolates the moving chain 3 from the surrounding environment, reducing the risk of personnel accidentally contacting moving parts or being injured by the chain 3.

[0043] In a specific embodiment, the chain guide tube 5 is a flexible hose; the flexible hose has a vibration damping function, which can absorb and buffer the vibration transmitted from the nacelle swaying, and can protect the chain 3.

[0044] In other embodiments, a rigid conduit consisting of multiple movable joints, such as a hollow snake bone joint assembly.

[0045] Through the above scheme, the guide pipe 5 adopts a flexible hose or a rigid conduit with movable joints, which allows the guide pipe 5 to be bent and adjusted according to the actual installation position and space on site, making it easy to adapt to the differences in the height of the nacelle and the position of the hoisting hole of different wind turbine generator sets, thereby improving the versatility and ease of installation of the device.

[0046] In a specific embodiment, the inner diameter of the guide tube 5 is larger than the maximum outer dimension of the chain link of the chain 3, and the inner wall of the guide tube 5 is provided with a polytetrafluoroethylene (PTFE) layer. The larger inner diameter of the guide tube 5 provides ample space for the chain 3 to move within the tube, effectively preventing jamming that may occur due to chain twisting or tilting, and ensuring smooth lifting operations. The PTFE layer has an extremely low coefficient of friction and self-lubricating properties, reducing the frictional resistance between the chain 3 and the tube wall, which helps reduce the load energy consumption of the hoist, and also reduces wear on the chain 3 and the guide tube 5 themselves, extending their service life.

[0047] In a preferred embodiment, see Figure 2 The storage box 2 has a guide cover 6 on top, through which the chain 3 passes. The lower end of the chain guide tube 5 is fixedly connected to the upper port of the guide cover 6. The guide cover 6 serves as a guiding structure for the chain 3 to enter the storage box 2, continuously guiding the chain 3 from the chain guide tube 5 into the storage box 2. This helps prevent the chain 3 from impacting the storage box 2 due to inertia or swaying, ensuring the stability of the recycling process. In addition, it also prevents external impurities from falling into the storage box 2 from the upper port of the guide cover 6.

[0048] In a specific embodiment, see Figure 2 The guide cover 6 is designed with a U-shaped structure, and its two ends are fixed to the outer wall of the storage box 2. The U-shaped structure design facilitates sufficient connection area between the guide cover 6 and the storage box 2, which helps to improve the connection strength.

[0049] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A hoisting device, characterized in that, include: The hoist body (1) is installed at a fixed node on the building wall; Storage box (2) is set on the ground side, spaced apart from the hoist body (1); Chain (3), one end of which is fixed inside the storage box (2), and the other end extends through the hoist body (1) to hang objects; the middle section of the chain (3) is wound around the hoist body (1). The operating handle (4) is electrically connected to the control box inside the hoist body (1) to control the length of the chain (3) extending out of the hoist body (1).

2. The hoisting device according to claim 1, characterized in that, The hoisting device also includes a chain guide tube (5), the upper end of which is connected to the chain channel groove of the hoisting body (1), and the lower end extends to the top opening of the storage box (2).

3. The hoisting device according to claim 2, characterized in that, The guide tube (5) is a flexible hose or a rigid conduit composed of multiple movable joints.

4. The hoisting device according to claim 3, characterized in that, The inner diameter of the guide tube (5) is larger than the maximum outer dimension of the chain link of the chain (3), and the inner wall of the guide tube (5) is provided with a polytetrafluoroethylene layer.

5. The hoisting device according to claim 2, characterized in that, The storage box (2) is provided with a guide cover (6) on the top, the chain (3) passes through the guide cover (6), and the lower end of the guide tube (5) is fixedly connected to the upper port of the guide cover (6).

6. The hoisting device according to claim 5, characterized in that, The guide cover (6) is configured as a U-shaped structure, and the two ends of the guide cover (6) are fixedly installed on the outer wall of the storage box (2).

7. The hoisting device according to claim 1, characterized in that, The bottom of the hoist body (1) is provided with a first channel groove and a second channel groove that are spaced apart from each other, and the chain (3) is movably inserted through the first channel groove and the second channel groove.

8. The hoisting device according to claim 1, characterized in that, The hoist body (1) is provided with a hanging ring (101), which is fixedly connected to the top outer wall of the hoist body (1).

9. The hoisting device according to claim 1, characterized in that, The storage box (2) has a fixed wing (201) at the bottom, and the fixed wing (201) has several fixing holes.

10. The hoisting device according to claim 1, characterized in that, The chain (3) has a hook (301) at the end away from the storage box (2).

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