Electric hoist for fan

Abstract

The utility model discloses an electric hoist for a fan, which relates to the technical field of electric hoists and comprises a moving component and an electric hoist connected below the moving component, and the front end of the moving component is connected with a first limiting component; a second limiting assembly is installed on the side end face of the moving assembly. A guide assembly is connected to the lower portion of a feeding port of the electric hoist, and an anti-falling assembly is connected between the guide assembly and the moving assembly. The hand-cranking rotating rod is rotated to enable the screw rod to drive the two connecting plates to move so as to drive the tops of the two locking rods to be close to or far away from each other, so that the clamping plates can clamp or loosen the cross beam, position locking of the electric hoist is achieved, the jackscrew is rotated to enable the end of the jackscrew to abut against the cross beam, and the position of the electric hoist is locked. The position of the electric hoist is further locked, the frame is further locked, and the safety is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of electric hoist technology, and in particular to an electric hoist for a fan. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current. A wind turbine typically consists of components such as a wind turbine, generator, deflector, tower, speed limiting safety mechanism, and energy storage device.

[0003] Currently, in the field of wind turbines, wind turbines are usually installed at high positions. Due to the large weight of the components, electric hoists are needed for hoisting. Because of the weight of the components, the electric hoist must be firmly locked to the crossbeam during hoisting to prevent displacement and further shaking that could lead to accidents. However, currently, the electric hoists used for wind turbine rotation are usually locked using the braking system on the moving vehicle above the hoist. This method carries a high risk and cannot completely prevent the electric hoist from shifting, thus avoiding accidents. Utility Model Content

[0004] The purpose of this invention is to provide an electric hoist for fans to solve the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses an electric hoist for a fan, comprising a moving component and an electric hoist connected below the moving component. The front end of the moving component is connected to a first limiting component, which includes a mounting plate connected to the moving component and two S-shaped locking rods hinged to the mounting plate at their midpoints via pins. Each locking rod has a clamping plate connected to one opposite side at its upper end, and a connecting plate hinged to the other end of each locking rod. An intermediate sleeve is provided between the other ends of the two connecting plates, with the bottoms of the two connecting plates respectively hinged to both ends of the intermediate sleeve. The intermediate sleeve has a vertically upward threaded hole, with a screw threaded into the threaded hole. A hand crank is connected to the bottom of the screw, and the top of the screw is rotatably connected to a bearing. The bearing is positioned below the hinged position of the two locking rods and connected to the mounting plate. A guide component is connected below the feed inlet of the electric hoist, and an anti-drop component is connected between the guide component and the moving component.

[0007] Furthermore, the shaft of the hand crank is rotatably connected to the mounting plate via a bearing seat.

[0008] Furthermore, the mobile assembly includes a frame and movable wheels installed inside the frame, the movable wheels rolling on a crossbeam, the electric hoist being connected to the bottom of the frame, and the mounting plate being fixed to the front end of the frame.

[0009] Furthermore, a second limiting component is installed on the frame, the second limiting component including a threaded tube that passes through the frame, and a set screw is threaded inside the threaded tube.

[0010] Furthermore, the guiding assembly includes a guide tube with its top fixed to the outside of the feed inlet of the electric hoist, and the bottom of the guide tube is flared.

[0011] Furthermore, the anti-detachment component includes an L-shaped connecting frame with one end fixed to the side wall of the frame, an anti-detachment chain connected to the bottom of the connecting frame, and the other end of the anti-detachment chain connected to the chain guide tube through a first clamping ring.

[0012] Furthermore, at least one limit sensor is installed on the bottom outer wall of the chain guide tube. The limit sensor is connected to the electric hoist via a cable, which is fixed to the outer wall of the chain guide tube. The chain at one end of the feed inlet of the electric hoist is placed inside a chain bag, which is connected to the bottom of the chain guide tube. A baffle is connected to one end of the chain inside the chain bag, and the diameter of the baffle is larger than the diameter of the flared opening at the bottom of the chain guide tube.

[0013] Furthermore, the cable is secured to the guide tube by a second clamping ring.

[0014] Furthermore, four limit sensors are installed on the bottom outer wall of the guide tube, and the included angle between two adjacent limit sensors is 90°.

[0015] Furthermore, anti-slip pads are attached to the adjacent end faces of the two clamps.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0017] This invention uses a hand crank to rotate a screw, which moves two connecting plates, causing the tops of two locking rods to move closer to or further away. This allows the clamping plates to clamp or release the crossbeam, thus locking the position of the electric hoist. Furthermore, by rotating the set screw, the end of the set screw rests on the crossbeam, further locking the position of the electric hoist and the frame, greatly improving safety. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1This is a schematic diagram of the structure of the electric hoist for the fan of this utility model;

[0020] Figure 2 This is a front view of the electric hoist for fans according to this utility model;

[0021] Figure 3 This is a top view of the electric hoist for the fan of this utility model;

[0022] Explanation of reference numerals in the attached diagram: 1. Anti-slip mat; 2. Electric hoist; 3. Mounting plate; 4. Locking rod; 5. Clamping plate; 6. Connecting plate; 7. Intermediate sleeve; 8. Screw; 9. Hand crank; 10. Bearing; 11. Frame; 12. Moving wheel; 13. Threaded pipe; 14. Set screw; 15. Chain guide pipe; 16. Connecting frame; 17. Anti-chain slippage device; 18. First clamping ring; 19. Limit sensor; 20. Second clamping ring; 21. Baffle. Detailed Implementation

[0023] like Figure 1-3 As shown, an electric hoist for a fan includes a moving component and an electric hoist 2 connected below the moving component. The front end of the moving component is connected to a first limiting component.

[0024] The first limiting component includes a mounting plate 3 connected to the movable component and two S-shaped locking rods 4 hinged to the mounting plate 3 by pins at their middle parts. Each locking rod 4 has a clamping plate 5 connected to one opposite side at its upper end, and an anti-slip pad 1 connected to the adjacent side of the clamping plates 5. Each locking rod 4 has a connecting plate 6 hinged to its other end, and an intermediate sleeve 7 is provided between the other ends of the two connecting plates 6. The bottoms of the two connecting plates 6 are respectively hinged to the two ends of the intermediate sleeve 7. The intermediate sleeve 7 has a vertically upward threaded hole, and a screw 8 is threaded into the threaded hole. A hand crank 9 is connected to the bottom of the screw 8, and the shaft of the hand crank 9 is rotatably connected to the mounting plate 3 via a bearing seat. The top of the screw 8 is rotatably connected to a bearing 10, which is positioned below the hinged position of the two locking rods 4 and connected to the mounting plate 3. In use, rotate the hand crank 9 to drive the screw 8 to rotate, which in turn drives the intermediate sleeve 7 to move upward on the screw 8. This causes the tops of the two connecting plates 6 to move away from each other, thereby bringing the tops of the two locking rods 4 closer together and bringing the two clamping plates 5 closer together to firmly clamp the crossbeam, thus locking the position of the moving component and ensuring the stability of the electric hoist 2.

[0025] The hand crank 9 includes a rod body connected to the bottom of the screw 8. A middle rod is hinged to the bottom of the rod body, and a handle is hinged to the bottom of the middle rod. When in use, the rod body, the middle rod, and the handle are folded into a Z-shape for easy rotation.

[0026] The mobile assembly includes a frame 11 and movable wheels 12 installed inside the frame 11. The movable wheels 12 roll on a crossbeam and are driven by a drive motor mounted on the frame 11. The drive motor is equipped with a braking system. This structure is prior art, and its specific details will not be described here. The electric hoist 2 is connected to the bottom of the frame 11, and the mounting plate 3 is fixed to the front end of the frame 11.

[0027] A second limiting component is installed on the frame 11. The second limiting component includes a threaded tube 13 that passes through the frame 11. A set screw 14 is threaded inside the threaded tube 13. By rotating the set screw 14, the end of the set screw 14 is pressed against the crossbeam, thereby further locking the position of the moving component and ensuring the stability of the electric hoist 2.

[0028] The electric hoist 2 has a guide assembly connected below its feed inlet. The guide assembly includes a guide tube 15 with its top fixed to the outside of the feed inlet of the electric hoist 2. The bottom of the guide tube 15 is flared.

[0029] An anti-detachment component is connected between the guide component and the moving component. The anti-detachment component includes an L-shaped connecting frame 16 with one end fixed to the side wall of the frame 11. An anti-detachment chain 17 is connected to the bottom of the connecting frame 16. The other end of the anti-detachment chain 17 is connected to the guide chain tube 15 through a first clamping ring 18. The anti-detachment component prevents the guide chain tube 15 from falling off due to other factors, thereby avoiding safety accidents.

[0030] Four limit sensors 19 are installed on the bottom outer wall of the chain guide tube 15. The included angle between any two adjacent limit sensors 19 is 90°. The limit sensors 19 are connected to the electric hoist 2 via cables. The cables are fixed to the outer wall of the chain guide tube 15 by a second clamping ring 20. The chain at one end of the feed inlet of the electric hoist 2 is placed inside a chain bag. The chain bag is connected to the bottom of the chain guide tube 15, and a baffle 21 is connected to one end of the chain inside the chain bag. The diameter of the baffle 21 is larger than the diameter of the flared opening at the bottom of the chain guide tube 15. The limit sensors 19 sense the position of the baffle 21 to prevent the baffle 21 from pressing against the bottom of the chain guide tube 15.

[0031] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An electric hoist for a fan, characterized in that: The device includes a moving assembly and an electric hoist (2) connected below the moving assembly. A first limiting assembly is connected to the front end of the moving assembly. The first limiting assembly includes a mounting plate (3) connected to the moving assembly and two S-shaped locking rods (4) hinged to the mounting plate (3) at their midpoints via pins. Each locking rod (4) has a clamping plate (5) connected to one opposite side at one end. Each locking rod (4) has a connecting plate (6) hinged to its other end. An intermediate sleeve (7) is provided between the other ends of the two connecting plates (6). The bottom of (6) is respectively hinged to both ends of the intermediate sleeve (7). The intermediate sleeve (7) has a vertically upward threaded hole. The threaded hole is threaded with a screw (8). The bottom of the screw (8) is connected to a hand crank (9). The top of the screw (8) is rotatably connected to a bearing (10). The bearing (10) is located below the hinged position of the two locking rods (4) and connected to the mounting plate (3). A guide assembly is connected below the feed port of the electric hoist (2). An anti-drop assembly is connected between the guide assembly and the moving assembly.

2. The electric hoist for a fan according to claim 1, characterized in that: The shaft of the hand crank (9) is rotatably connected to the mounting plate (3) via a bearing seat.

3. The electric hoist for a fan according to claim 1, characterized in that: The moving assembly includes a frame (11) and moving wheels (12) installed inside the frame (11), the moving wheels (12) rolling on a crossbeam, the electric hoist (2) being connected to the bottom of the frame (11), and the mounting plate (3) being fixed to the front end of the frame (11).

4. The electric hoist for a fan according to claim 3, characterized in that: A second limiting assembly is installed on the frame (11). The second limiting assembly includes a threaded tube (13) that passes through the frame (11) and is connected to a set screw (14) inside the threaded tube (13).

5. The electric hoist for a fan according to claim 4, characterized in that: The guiding assembly includes a guide tube (15) with its top fixed to the outside of the feed inlet of the electric hoist (2), and the bottom of the guide tube (15) is flared.

6. The electric hoist for a fan according to claim 5, characterized in that: The anti-detachment assembly includes an L-shaped connecting frame (16) fixed at one end to the side wall of the frame (11), an anti-detachment chain (17) connected to the bottom of the connecting frame (16), and the other end of the anti-detachment chain (17) connected to the guide chain tube (15) through a first clamping ring (18).

7. The electric hoist for a fan according to claim 6, characterized in that: At least one limit sensor (19) is installed on the bottom outer wall of the guide tube (15). The limit sensor (19) is connected to the electric hoist (2) via a cable. The cable is fixed on the outer wall of the guide tube (15). The chain at one end of the feed port of the electric hoist (2) is placed in a chain bag. The chain bag is connected to the bottom of the guide tube (15). A baffle (21) is connected to one end of the chain placed inside the chain bag. The diameter of the baffle (21) is larger than the diameter of the flared opening at the bottom of the guide tube (15).

8. The electric hoist for a fan according to claim 7, characterized in that: The cable is fixed to the guide tube (15) by a second clamping ring (20).

9. The electric hoist for a fan according to claim 8, characterized in that: Four limit sensors (19) are installed on the bottom outer wall of the guide tube (15), and the included angle between two adjacent limit sensors (19) is 90°.

10. The electric hoist for a fan according to claim 1, characterized in that: Anti-slip pads (1) are attached to the end faces of the two clamps (5) that are close to each other.

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