Novel movable pulley device
By using a novel symmetrically designed moving pulley device, which combines pulley components and pin components, the problems of laborious operation and jamming in existing devices are solved, achieving a smooth and labor-saving lifting effect.
Patent Information
- Application Number
- CN202422761946.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-13
AI Technical Summary
Existing movable pulley devices are difficult to operate and prone to jamming when lifting heavy objects due to the long and thick pins, making it difficult to achieve smooth and labor-saving lifting operations.
A novel movable pulley device was designed, employing symmetrical pin and pulley assemblies, including pulley assemblies, pin assemblies, and hydraulic grab beams. The symmetrical design of the pulley assemblies and self-lubricating bearings ensure the device's balance under no-load conditions, and effortless lifting is achieved through handwheel operation.
This achieves balance and ease of operation of the device under no-load conditions, reduces the risk of wire rope entanglement, avoids pin jamming, and improves lifting efficiency and safety.
Smart Images
Figure CN223509537U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lifting tools technology, specifically a novel movable pulley device. Background Technology
[0002] A hydroelectric power plant is a facility that generates electricity using water energy, and it is usually built near rivers, reservoirs, or other water sources. The main components of a hydroelectric power plant include a dam, a water diversion system, generator units, and a power transmission system. Hydroelectric power plants are mainly used to intercept water flow, form reservoirs, and store hydroelectric energy.
[0003] In hydroelectric power stations, movable pulleys and pulley blocks are commonly used to assist in the underwater lifting of heavy objects such as gates and trash racks by grab beams. These objects are typically large in size and heavy in weight, thus requiring pulley blocks and movable pulleys to achieve labor-saving and stable lifting operations. Existing lifting equipment is generally used to lift steel structure gates, which have a large lifting weight, so the shaft of the pin-connecting device is relatively thick. In addition, in order to match the lifting lugs of the grab beam or gate, the entire pin shaft is quite long. Because of the long and thick shaft of this pin-connecting device, when a person manually rotates the handle of the pin-connecting device, the operation becomes very laborious due to the forward shift of the pin shaft's center of gravity, and sometimes even jamming occurs. Therefore, there is an urgent need for a new type of movable pulley device. Utility Model Content
[0004] The purpose of this invention is to provide a novel movable pulley device to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a novel movable pulley device, including a pulley assembly, a steel wire rope for lifting is provided on the pulley assembly, symmetrical pin assemblies are installed below the pulley assembly, and a hydraulic grab beam for lifting the gate is installed at the bottom of the pin assemblies.
[0006] The pin assembly includes a small lug, a movable shaft is installed inside the small lug, a copper nut is installed inside the movable shaft, a handwheel screw shaft is installed inside the copper nut, a keyway is formed on the surface of the movable shaft, a slide rail key is installed on the outside of the movable shaft, a connecting seat is installed on the outside of the slide rail key, and a handwheel is installed at one end of the handwheel screw shaft.
[0007] Preferably, the slide rail key is installed in a keyway opened on the outside of the moving shaft.
[0008] The surface of the movable shaft has a keyway, and a slide rail key is installed on the outside. A connecting seat is installed on the outside of the slide rail key to ensure the stability and reliability of the pin assembly.
[0009] Preferably, the pulley assembly includes a pull plate, a pulley shaft is installed inside the pull plate, a spacer is installed on the surface of the middle part of the pulley shaft, a self-lubricating bearing is installed on the surface of the pulley shaft, and a pulley is installed on the outside of the self-lubricating bearing.
[0010] Preferably, a pulley cover is installed on the surface of the pulley shaft, and the pulley is located inside the pulley cover.
[0011] A pulley cover is also installed on the surface of the pulley shaft, and the pulley is located inside the pulley cover to further protect the pulley from interference from the external environment.
[0012] Preferably, one end of each small lug is fixedly connected to a pull plate.
[0013] Preferably, multiple self-lubricating bearings are provided, and pulleys are installed on the outer side of each of the multiple self-lubricating bearings.
[0014] The pulley shaft has a spacer in the middle and multiple self-lubricating bearings on its surface. Pulleys are installed on the outer side of these self-lubricating bearings to ensure the smoothness and wear resistance of the pulleys during rotation.
[0015] Preferably, the wire rope is mounted on a pulley.
[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0017] First, this utility model adopts a symmetrical pin assembly design, which makes the whole device maintain complete balance in the unloaded state without the need to set up a counterweight device for balance. The single pin shaft is changed into a symmetrical moving shaft, making the shell of the pin assembly shorter and reducing the possibility of wire rope entanglement underwater. In addition, it is easier to operate the handwheel by personnel and will not cause the moving shaft of the pin assembly to jam. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic cross-sectional view of the pulley assembly of this utility model;
[0020] Figure 3 This is a cross-sectional structural diagram of the pin-feeding assembly of this utility model.
[0021] The components are as follows: 1. Pulley assembly; 2. Wire rope; 3. Pin assembly; 11. Pull plate; 12. Pulley shaft; 13. Spacer; 14. Self-lubricating bearing; 15. Pulley; 16. Pulley cover; 31. Small lifting lug; 32. Moving shaft; 33. Copper nut; 34. Handwheel screw shaft; 35. Keyway; 36. Slide rail key; 37. Connecting seat; 38. Handwheel. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] This utility model provides the following technical solution:
[0024] Example 1
[0025] Please see Figure 1 , Figure 2 , Figure 3 A novel dynamic pulley device includes a pulley assembly 1, on which a steel wire rope 2 for lifting is provided, and symmetrical pin assemblies 3 are installed below the pulley assembly 1. A hydraulic grab beam 4 for lifting the gate is installed at the bottom of the pin assemblies 3.
[0026] The pin assembly 3 includes a small lug 31, a movable shaft 32 is installed inside the small lug 31, a copper nut 33 is installed inside the movable shaft 32, a handwheel screw shaft 34 is installed inside the copper nut 33, a keyway 35 is opened on the surface of the movable shaft 32, a slide rail key 36 is installed on the outside of the movable shaft 32, a connecting seat 37 is installed on the outside of the slide rail key 36, and a handwheel 38 is installed at one end of the handwheel screw shaft 34.
[0027] The slide rail key 36 is installed in the keyway 35 opened on the outside of the moving shaft 32.
[0028] The pulley assembly 1 includes a pull plate 11, a pulley shaft 12 is installed inside the pull plate 11, a spacer 13 is installed on the surface of the middle part of the pulley shaft 12, a self-lubricating bearing 14 is installed on the surface of the pulley shaft 12, and a pulley 15 is installed on the outside of the self-lubricating bearing 14.
[0029] A pulley cover 16 is mounted on the surface of the pulley shaft 12, and the pulley 15 is located inside the pulley cover 16.
[0030] One end of the small hanging lug 31 is fixedly connected to the pull plate 11.
[0031] Multiple self-lubricating bearings 14 are provided, and pulleys 15 are installed on the outer side of each self-lubricating bearing 14.
[0032] The steel wire rope 2 is installed on the pulley 15.
[0033] According to the above technical solution, the pulley assembly 1 includes a pull plate 11, a pulley shaft 12, a spacer 13, self-lubricating bearings 14, and a pulley 15. The pulley shaft 12 is installed inside the pulley plate 11. A spacer 13 is provided in the middle of the pulley shaft 12, and multiple self-lubricating bearings 14 are installed on its surface. Pulleys 15 are installed on the outer sides of these self-lubricating bearings 14 to ensure the smoothness and wear resistance of the pulleys 15 during rotation. A pulley cover 16 is also installed on the surface of the pulley shaft 15. The pulley 15 is located on the pulley... Inside the cover 16, the pulley 15 is further protected from external environmental interference. The pulley assembly 1 is equipped with a wire rope 2 for lifting, ensuring smooth lifting operations. The pin assembly 3 is installed below the pulley assembly 1 and includes a small lifting lug 31, a moving shaft 32, a copper nut 33, a handwheel screw shaft 34, a keyway 35, a slide rail key 36, and a connecting seat 37. The moving shaft 32 is installed inside the small lifting lug 31, and the copper nut 33 is installed inside the moving shaft 32. The copper nut 33... The device is equipped with a handwheel screw shaft 34, and a keyway 35 is provided on the surface of the moving shaft 32. A slide rail key 36 is installed on the outside, and a connecting seat 37 is installed on the outside of the slide rail key 36 to ensure the stability and reliability of the pin assembly 3. A hydraulic grab beam 4 for lifting the gate is installed at the bottom of the pin assembly 3 to realize the gate lifting operation. The slide rail key 36 is installed in the keyway 35 on the outside of the moving shaft 32 to ensure a tight fit between the slide rail key 36 and the moving shaft 32. A handwheel 38 is installed at one end of the handwheel screw shaft 34 for easy operation and less effort. Due to the symmetrical pin assembly 3 design, the whole device maintains complete balance in the no-load state without the need for a counterweight device for balance. Replacing the single pin shaft with a symmetrical moving shaft 32 makes the shell of the pin assembly 3 shorter, reducing the chance of the wire rope 2 getting tangled underwater. In addition, it is easier to operate the handwheel 38 by hand and will not cause the moving shaft 32 of the pin assembly 3 to jam.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A novel movable pulley device, comprising a pulley assembly (1), characterized in that: The pulley assembly (1) is provided with a steel wire rope (2) for lifting, and a symmetrical pin assembly (3) is installed below the pulley assembly (1). A hydraulic grab beam (4) for lifting the gate is installed at the bottom of the pin assembly (3). The pin assembly (3) includes a small lug (31), a movable shaft (32) is installed inside the small lug (31), a copper nut (33) is installed inside the movable shaft (32), a handwheel screw shaft (34) is installed inside the copper nut (33), a keyway (35) is provided on the surface of the movable shaft (32), a slide rail key (36) is installed on the outside of the movable shaft (32), a connecting seat (37) is installed on the outside of the slide rail key (36), and a handwheel (38) is installed at one end of the handwheel screw shaft (34).
2. The novel movable pulley device according to claim 1, characterized in that: The slide rail key (36) is installed in the keyway (35) opened on the outside of the moving shaft (32).
3. The novel movable pulley device according to claim 1, characterized in that: The pulley assembly (1) includes a pull plate (11), a pulley shaft (12) is installed inside the pull plate (11), a spacer (13) is installed on the surface of the middle part of the pulley shaft (12), a self-lubricating bearing (14) is installed on the surface of the pulley shaft (12), and a pulley (15) is installed on the outside of the self-lubricating bearing (14).
4. The novel movable pulley device according to claim 3, characterized in that: A pulley cover (16) is mounted on the surface of the pulley shaft (12), and the pulley (15) is located inside the pulley cover (16).
5. The novel movable pulley device according to claim 1, characterized in that: One end of each of the small lugs (31) is fixedly connected to the pull plate (11).
6. The novel movable pulley device according to claim 3, characterized in that: Multiple self-lubricating bearings (14) are provided, and pulleys (15) are installed on the outer side of each of the multiple self-lubricating bearings (14).
7. The novel movable pulley device according to claim 1, characterized in that: The wire rope (2) is installed on the pulley (15).