Novel anti-falling self-locking pulley

Abstract

The utility model relates to a novel anti -falling self -locking pulley, including first support, first pulley, second support and stop falling thorn tooth component, stop falling thorn tooth component sets up on the first support on the rope channel upside by first support, first pulley and second support are composed, be provided with fling piece component on the first pulley, fling piece component is provided with a plurality of arc abutment ears. Compared with the prior art, adopt fling piece component, and set up fixed arc abutment ear's mode, when the heavy object extremely fast falls, can drive stop falling thorn tooth component to lock the rope fast, and adopt the above -mentioned mode to assemble more convenient, guarantee the security while the cost is relatively lower.

Description

Technical Field

[0001] This utility model belongs to the field of pulleys for hoisting heavy objects, and specifically relates to a new type of anti-fall self-locking pulley. Background Technology

[0002] When hoisting heavy objects, pulleys are often used to change the direction of driving force. Existing technologies include some anti-fall self-locking pulleys, such as patent application number 202423117528.5, entitled "An Anti-fall Self-locking Pulley." This patent application achieves fall prevention by setting a movable flap on the pulley. Specifically, when the heavy object falls at high speed, the inertia of the movable flap drives the anti-fall tooth assembly to rotate and lock the rope to stop the fall. However, this method requires setting a flap groove on the pulley and pivotally connecting the movable flap within the groove, which makes the pulley manufacturing process more complex, increases the manufacturing difficulty, and indirectly increases the manufacturing cost. Utility Model Content

[0003] This invention provides a novel anti-fall self-locking pulley to solve the technical problems existing in this field.

[0004] This utility model provides a novel anti-fall self-locking pulley to solve the above-mentioned technical problems. It includes a first bracket, a first pulley, a second bracket, and an anti-fall tooth assembly. The anti-fall tooth assembly is mounted on the first bracket above the rope channel formed by the first bracket, the first pulley, and the second bracket. A swing plate assembly is mounted on the first pulley, and the swing plate assembly has several arc-shaped abutment ears. When the load suspended on the first pulley rotates at a constant speed clockwise or counterclockwise, the arc-shaped abutment ears can smoothly transition with the driving part of the anti-fall tooth assembly. When the load suspended on the first pulley falls rapidly, the swing plate assembly rotates at high speed due to inertia and abuts against the driving part through the arc-shaped abutment ears, driving the anti-fall tooth assembly to rotate, and then locking the rope to prevent falling through the tooth assembly.

[0005] Furthermore, an eccentric drive mechanism is also provided at the toothed part. The eccentric drive mechanism is mounted on the first bracket via a rotating shaft. The eccentric drive mechanism and the first bracket are also provided with a reset torsion spring. The eccentric drive mechanism is provided with a drive handle.

[0006] Furthermore, the eccentric drive mechanism is provided with connecting arc grooves on one or / and both sides. After the eccentric drive mechanism is reset, the connecting arc grooves are engaged with the positioning screws provided on the first bracket. The positioning screws are provided with positioning steel balls, and a compression spring is provided between the positioning steel balls and the positioning screws.

[0007] Furthermore, the first bracket is rotatably equipped with a universal connector assembly.

[0008] Furthermore, the universal connector assembly is a pair of separate connectors, which are rotatably mounted on the first bracket via a rotating bushing and fastening screws.

[0009] Furthermore, the first bracket is also equipped with a first unlocking button, which allows the second bracket to be rotated to connect or disconnect from the first unlocking button, thereby closing or opening the rope channel.

[0010] Furthermore, a reset spring is provided between the first unlock button and the first bracket, and the first bracket is also provided with a limit pin, which is located in the limit groove of the first unlock button.

[0011] Furthermore, the first bracket may also be rotatably provided with a third bracket, and a second pulley is provided between the third bracket and the first bracket, with the second pulley and the first pulley sharing a common shaft.

[0012] Furthermore, the first bracket is also equipped with a second unlocking button, which can rotate the third bracket to connect or disconnect from the second unlocking button, thereby closing or opening the rope channel of the second pulley.

[0013] This utility model relates to a novel anti-fall self-locking pulley, comprising a first bracket, a first pulley, a second bracket, and an anti-fall tooth assembly. The anti-fall tooth assembly is mounted on the first bracket above the rope channel formed by the first bracket, the first pulley, and the second bracket. A swing plate assembly is mounted on the first pulley, and the swing plate assembly has several arc-shaped abutment ears. Compared with existing technologies, the use of a swing plate assembly and the provision of fixed arc-shaped abutment ears allows for rapid activation of the anti-fall tooth assembly to lock the rope when a heavy object falls at high speed. Furthermore, this assembly method is convenient, ensuring safety while maintaining relatively low cost. Attached Figure Description

[0014] Figure 1 and Figure 2 A three-dimensional structural schematic diagram of Embodiment 1 of the novel anti-fall self-locking pulley; Figure 3 This is a schematic diagram of the open state structure of Embodiment 1 of the novel anti-fall self-locking pulley; Figure 4 A schematic diagram of the eccentric drive mechanism for a new type of anti-fall self-locking pulley; Figure 5 This is a schematic diagram of the structure of a new type of anti-fall self-locking pulley in an explosion state. Figure 6 This is a three-dimensional structural diagram of Embodiment 2 of the novel anti-fall self-locking pulley. Detailed Implementation

[0015] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." The following descriptions are preferred embodiments of the present invention; however, these descriptions are intended to illustrate the general principles of the invention and are not intended to limit its scope. The scope of protection of this invention is determined by the appended claims.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings. The directional terms such as "upper", "lower", "left" and "right" described in the specification are only for better understanding and explanation, and are not intended to limit the present invention. Example

[0017] like Figure 1-4 As shown in Embodiment 1, a novel anti-fall self-locking pulley includes a first bracket 1, a first pulley 2, a second bracket 3, and an anti-fall tooth assembly 4. The anti-fall tooth assembly 4 is mounted on the first bracket 1 on the upper side of the rope channel formed by the first bracket 1, the first pulley 2, and the second bracket 3. The first pulley 2 is provided with a swing plate assembly 2a, which is provided with several arc-shaped abutment ears 2a1. When the weight suspended on the first pulley 2 rotates at a constant speed in a clockwise or counterclockwise direction, the arc-shaped abutment ears 2a1 can smoothly transition with the driving part 4a of the anti-fall tooth assembly 4. When the weight suspended on the first pulley 2 falls rapidly, the swing plate assembly 2a rotates at high speed due to inertia and abuts with the driving part 4a through the arc-shaped abutment ears 2a1, driving the anti-fall tooth assembly 4 to rotate, and then locking the rope to prevent falling through the tooth part 4b. In the design, the sling assembly 2a can be an integral structure or a split structure, preferably an integral structure, which is formed by die stamping and directly fixed to the first pulley 2 with screws. The sling assembly 2a adopts a fixed arc-shaped abutment ear 2a1. After relevant hoisting heavy objects test, it can quickly drive the anti-fall tooth assembly 4 to lock the rope when the heavy object falls at high speed. The above method of assembly is more convenient, and the cost is relatively low while ensuring safety.

[0018] Preferred, such as Figures 2-4 As shown, an eccentric drive mechanism 5 is also provided at the position of the toothed part 4b. The eccentric drive mechanism 5 is mounted on the first bracket 1 via a rotating shaft. The eccentric drive mechanism 5 and the first bracket 1 are also provided with a reset torsion spring 5d. The eccentric drive mechanism 5 is provided with a drive handle 5a.

[0019] More preferably, the eccentric drive mechanism 5 is provided with a connecting arc groove 5b on one or / and both sides. After the eccentric drive mechanism 5 is reset, the connecting arc groove 5b is engaged with the positioning screw 5c provided on the first bracket 1. The positioning screw 5c is provided with a positioning steel ball 5c1, and a compression spring is provided between the positioning steel ball 5c1 and the positioning screw 5c.

[0020] like Figure 3 As shown, rotating the second bracket 3 opens the rope channel, allowing the hoisting rope 9 to be inserted. The first end 9a of the hoisting rope 9 is used to hoist a heavy object, and a pulling force is applied to the second end 9b, causing the heavy object hoisted on the first end 9a to slowly rise. When the drive handle 5a is pressed, the eccentric drive mechanism 5 is driven to rotate. The eccentric drive mechanism 5 then drives the toothed part 4b to rotate, pressing the rope in the rope channel. At this time, the rope can slide clockwise (A) towards the second end 9b and counterclockwise (B) towards the first end 9a. It will get stuck on the toothed part 4b, and the rope in the rope channel can maintain a unidirectional sliding state, which can slowly lift the heavy object and prevent it from falling rapidly; when the eccentric drive mechanism 5 is reset and pressed, the connecting arc groove 5b will be locked and limited by the positioning steel ball 5c1 of the positioning screw 5c. The eccentric drive mechanism 5 is in a state away from the toothed part 4b. At this time, the rope in the rope channel can slide in the clockwise direction A or the counterclockwise direction B, realizing a bidirectional sliding state. Thus, the eccentric drive mechanism 5 can realize unidirectional or bidirectional switching, improving the performance.

[0021] More preferably, such as Figure 5 As shown, the first bracket 1 is rotatably provided with a universal connector buckle assembly 6.

[0022] More preferably, the universal connector assembly 6 is a pair of separate connectors 6a, which are rotatably mounted on the first bracket 1 via a rotating sleeve 6b and a fastening screw.

[0023] More preferably, the first bracket 1 is also provided with a first unlocking button 3a, which can rotate the second bracket 3 to connect or separate from the first unlocking button 3a, thereby closing or opening the rope channel.

[0024] More preferably, a reset spring 3a1 is provided between the first unlock button 3a and the first bracket 1, and the first bracket 1 is also provided with a limiting pin 3a2, which is disposed in the limiting groove 3a3 of the first unlock button 3a.

[0025] More preferably, in Example 2, such as Figure 6 As shown, the first bracket 1 can also be rotatably provided with a third bracket 7, and a second pulley 8 is provided between the third bracket 7 and the first bracket 1. The second pulley 8 and the first pulley 2 share a rotating shaft.

[0026] More preferably, the first bracket 1 is also provided with a second unlocking button 7a, which can rotate the third bracket 7 to connect or separate from the second unlocking button 7a, thereby closing or opening the rope channel of the second pulley 8.

[0027] Setting a second pulley 8 can effectively improve the overall efficiency of the pulley and expand its application scenarios.

[0028] This utility model relates to a novel anti-fall self-locking pulley, comprising a first bracket, a first pulley, a second bracket, and an anti-fall tooth assembly. The anti-fall tooth assembly is mounted on the first bracket above the rope channel formed by the first bracket, the first pulley, and the second bracket. A swing plate assembly is mounted on the first pulley, and the swing plate assembly has several arc-shaped abutment ears. Compared with existing technologies, the use of a swing plate assembly and the provision of fixed arc-shaped abutment ears allows for rapid activation of the anti-fall tooth assembly to lock the rope when a heavy object falls at high speed. Furthermore, this assembly method is convenient, ensuring safety while maintaining relatively low cost.

[0029] The foregoing description illustrates and describes preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A novel anti-fall self-locking pulley, comprising a first bracket (1), a first pulley (2), a second bracket (3), and an anti-fall tooth assembly (4), wherein the anti-fall tooth assembly (4) is disposed on the first bracket (1) above the rope channel formed by the first bracket (1), the first pulley (2), and the second bracket (3); characterized in that: The first pulley (2) is provided with a sling assembly (2a), and the sling assembly (2a) is provided with a plurality of arc-shaped abutment ears (2a1); when the heavy object suspended on the first pulley (2) rotates at a constant speed in the clockwise or counterclockwise direction, the arc-shaped abutment ears (2a1) can smoothly transition with the drive part (4a) of the fall arrestor tooth assembly (4); when the heavy object suspended on the first pulley (2) falls at high speed, the sling assembly (2a) rotates at high speed due to inertia, and abuts with the drive part (4a) through the arc-shaped abutment ears (2a1), and drives the fall arrestor tooth assembly (4) to rotate, and then the tooth part (4b) clamps the rope to stop the fall.

2. The novel anti-fall self-locking pulley as described in claim 1, characterized in that: An eccentric drive mechanism (5) is also provided at the position of the toothed part (4b). The eccentric drive mechanism (5) is mounted on the first bracket (1) via a rotating shaft. The eccentric drive mechanism (5) and the first bracket (1) are also provided with a reset torsion spring (5d). The eccentric drive mechanism (5) is provided with a drive handle (5a).

3. The novel anti-fall self-locking pulley as described in claim 2, characterized in that: The eccentric drive mechanism (5) is also provided with a connecting arc groove (5b) on one or / and both sides. After the eccentric drive mechanism (5) is reset, the connecting arc groove (5b) is engaged with the positioning screw (5c) provided on the first bracket (1). The positioning screw (5c) is provided with a positioning steel ball (5c1). A compression spring is provided between the positioning steel ball (5c1) and the positioning screw (5c).

4. A novel anti-fall self-locking pulley as described in claim 1 or 2, characterized in that: The first bracket (1) is rotatably provided with a universal connector buckle assembly (6).

5. A novel anti-fall self-locking pulley as described in claim 4, characterized in that: The universal connector assembly (6) is a pair of split connectors (6a), which are rotatably mounted on the first bracket (1) via a rotating bushing (6b) and a fastening screw.

6. A novel anti-fall self-locking pulley as described in claim 1 or 2, characterized in that: The first bracket (1) is also provided with a first unlock button (3a), which can rotate the second bracket (3) to connect or separate from the first unlock button (3a), thereby closing or opening the rope channel.

7. A novel anti-fall self-locking pulley as described in claim 6, characterized in that: A reset spring (3a1) is provided between the first unlock button (3a) and the first bracket (1). The first bracket (1) is also provided with a limit pin (3a2), which is located in the limit groove (3a3) of the first unlock button (3a).

8. A novel anti-fall self-locking pulley as described in claim 1, 2, 3, 5, or 7, characterized in that: The first bracket (1) can also be rotatably provided with a third bracket (7), and a second pulley (8) is provided between the third bracket (7) and the first bracket (1). The second pulley (8) and the first pulley (2) share a rotating shaft.

9. A novel anti-fall self-locking pulley as described in claim 8, characterized in that: The first bracket (1) is also provided with a second unlock button (7a), which can rotate the third bracket (7) to connect or separate from the second unlock button (7a), thereby closing or opening the rope channel of the second pulley (8).

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