Automatic rope falling stopper
By introducing structures such as cover plate opening and closing buttons, rolling cam and reset rocker into the automatic rope stopper, the limit block is automatically opened by using the rope sliding speed and centrifugal force, the problem of low safety of the prior art stopper is solved. Achieve a more stable and safe locking effect.
Patent Information
- Application Number
- CN202421089675.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing automatic rope drop stopper has a simple structure, lacks the misoperation protection function of the locking structure, and is low in safety. It is easy to cause accidents due to instantaneous impulse damage or inability to get stuck in the rope.
An automatic rope drop stopper including cover plate opening and closing button, rolling cam, elastic block, limit opening and closing block, locking cam, push block, spring and cam reset rocker was designed, using rope sliding speed and centrifugal force. Automatically open the limit block for quick locking and prevent accidental closing with the cam reset rocker.
It improves the stability and safety of the fall stopper, avoids the failure of the locking structure caused by the accidental closing of the limit opening and closing block, and ensures effective locking of the rope and safe reset of the structure.
Smart Images
Figure CN222341834U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rope safety devices, in particular to an automatic rope fall arrester. Background Art
[0002] At present, the fall arrester is also called a fall preventer or a speed differential. It is a protective product. It can quickly brake and lock the falling object within a limited distance. It is suitable for cargo hoisting, protecting the life safety of ground operators and preventing damage to the hoisted objects. When the user falls suddenly, the fall arrester will jam the rope to prevent the user from falling further.
[0003] At present, when a rope fall arrester is stuck on a rope, it will be subjected to a great instantaneous impact force, which may easily damage the fall arrester or even cause the fall arrester to fail to stick to the rope, resulting in an accident, and lacks a protective function for the structural reset operation. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the automatic rope fall arrester in the prior art has a relatively simple structure, lacks the misoperation protection function of the locking structure, and has low safety.
[0005] The technical solution adopted by the utility model is as follows: an automatic rope fall arrester proposed in the utility model includes a fall arrester body, a cover opening and closing button is provided on the fall arrester body, an upper cover is rotatably provided on the fall arrester body, and a groove engaged with the cover opening and closing button is provided on the upper cover, a rope passes through the fall arrester body, a rolling cam is rotatably provided inside the fall arrester body, and the outer wall of the rolling cam is in contact with the rope.
[0006] Furthermore, two groups of spring blocks are arranged inside the rolling cam, and the two groups of spring blocks are arranged to be flipped 180 degrees with the center of the rolling cam as the axis.
[0007] Furthermore, the rolling cam is provided with a limiting opening and closing block which cooperates with the spring block.
[0008] Furthermore, a locking cam is rotatably provided on the rolling cam, and a push block and a spring are provided inside the cover opening and closing button.
[0009] Furthermore, a cam reset rocker is provided on the fall arrester body.
[0010] Furthermore, the upper cover plate rotates clockwise, and the locking cam rotates clockwise.
[0011] The beneficial effects achieved by the utility model using the above structure are as follows:
[0012] 1. Using the sliding speed of the rope, the spring block opens under the action of centrifugal force, forcing the limit block to open automatically to achieve rapid locking and limit, thereby improving stability;
[0013] 2. The cam reset rocker is set to avoid the potential safety hazard of failure of the locking structure caused by accidental closing of the limit opening and closing block. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;
[0015] Figure 2 This is a schematic diagram of the use state of an embodiment of the utility model;
[0016] Figure 3 The internal structure of the embodiment of the utility model is shown in FIG. Figure 1 ;
[0017] Figure 4 This is a reference diagram of the use status of the locking cam;
[0018] Figure 5 The internal structure of the embodiment of the utility model is shown in FIG. Figure 2 ;
[0019] Figure 6 Schematic diagram of the reset state of the locking cam.
[0020] Among them, 1. fall arrester body; 2. cover opening and closing button; 3. upper cover; 4. rope; 5. rolling cam; 6. spring block; 7. limit opening and closing block; 8. locking cam; 9. push block; 10. spring; 11. cam reset rocker. DETAILED DESCRIPTION
[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the utility model proposes an automatic rope fall arrester, including a fall arrester body 1, a cover opening and closing button 2 is provided on the fall arrester body 1, an upper cover 3 is rotatably provided on the fall arrester body 1, and a groove engaged with the cover opening and closing button 2 is provided on the upper cover 3, a rope 4 passes through the fall arrester body 1, a rolling cam 5 is rotatably provided inside the fall arrester body 1, and the outer wall of the rolling cam 5 is in contact with the rope 4; two groups of spring blocks 6 are provided inside the rolling cam 5, and the two groups of spring blocks 6 are arranged with the center of the rolling cam 5 as the axis and are turned 180 degrees.
[0022] The rolling cam 5 is provided with a limit opening and closing block 7 which cooperates with the spring block 6 .
[0023] A locking cam 8 is rotatably provided on the rolling cam 5 , and a push block 9 and a spring 10 are provided inside the cover opening and closing button 2 .
[0024] The fall arrester body 1 is provided with a cam reset rocker 11 .
[0025] The upper cover plate 3 rotates clockwise, and the locking cam 8 rotates clockwise.
[0026] When in use, press the cover opening and closing button 2 and rotate the upper cover 3 clockwise to open it;
[0027] After the cover is opened, the rope 4 is inserted. When the fall arrester moves in the direction shown in the figure, the rolling cam 5 rotates counterclockwise under the friction of the rope 4.
[0028] The faster the rope 4 slides, the faster the rolling cam 5 rotates, and the greater the centrifugal force generated. When the centrifugal force reaches a certain value, the two spring blocks 6 open under the action of the centrifugal force, and at the same time force the limit opening and closing block 7 to open;
[0029] The limit opening and closing block 7 is opened and moves in the direction indicated by the arrow. Figure 5 The position shown, at this time, the locking cam 8 is released and the locking cam 8 rotates clockwise;
[0030] The greater the rotation angle of the locking cam 8, the greater the force of squeezing the rope 4. At the same time, the push block 9 exerts a thrust on the rope 4 under the elastic force of the spring 10. When the locking cam 8 rotates to a certain angle, the rope 4 is locked. Move the rope 4 upward and rotate the locking cam 8 counterclockwise to release the rope 4.
[0031] like Figure 5 As shown, when the cam reset rocker 11 is in the open state, the locking cam 8 is rotated counterclockwise, and the limit opening and closing block 7 is reset and closed under the action of the spring 10. At the same time, the locking cam 8 is locked and the locking cam 8 is successfully reset. Figure 6 As shown, when the cam reset rocker 11 is in the closed state, the limit opening and closing block 7 cannot be closed, that is, the locking cam 8 cannot be reset;
[0032] The above is the entire use process of an automatic rope fall arrester.
[0033] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. An automatic rope fall arrester, comprising a fall arrester body, a cover opening and closing button is provided on the fall arrester body, and an upper cover is rotatably provided on the fall arrester body, characterized in that: A groove which is engaged with the cover opening and closing button is provided on the upper cover plate, a rope passes through the fall arrester body, a rolling cam is rotatably provided inside the fall arrester body, and the outer wall of the rolling cam is in contact with the rope.
2. An automatic rope fall arrester according to claim 1, characterized in that: Two groups of spring blocks are arranged inside the rolling cam, and the two groups of spring blocks are arranged with the center of the rolling cam as the axis and are turned 180 degrees.
3. An automatic rope fall arrester according to claim 2, characterized in that: The rolling cam is provided with a limiting opening and closing block matched with the spring block.
4. An automatic rope fall arrester according to claim 3, characterized in that: A locking cam is rotatably provided on the rolling cam, and a push block and a spring are provided inside the cover opening and closing button.
5. The automatic rope fall arrester according to claim 4, characterized in that: The fall arrester body is provided with a cam reset rocker.
6. An automatic rope fall arrester according to claim 5, characterized in that: The upper cover plate rotates clockwise, and the locking cam rotates clockwise.