Falling protector for steel strand type falling prevention device
By designing a steel stranded fall-proof device, using the combination of contact blocks, semi-cluster balls and fall-proof blocks, the existing fall-proof device cannot meet the height accuracy and carrying weight when climbing, and achieve safety and stability climbing and fast clamping effects.
Patent Information
- Application Number
- CN202421049816.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The existing fall-proof device can only trigger locking action when falling at high speed when used, which cannot meet the operator's height accuracy requirements when climbing, resulting in the operator's need to carry an additional suspended seat belt, which increases the weight and inconvenience.
A steel stranded wire type anti-falling device is designed, including anti-falling shell, wire-holding tube, locking shell, anti-falling card block and semi-cluster ball. Through the design of contact block, semi-cluster ball and anti-falling card block, it is used to use The curved state of the steel strand increases grip, and the rotating plate and limit plate prevent the anti-falling block from turning in reverse, achieving safe and stable climbing and fast clamping.
It realizes that no additional seat belt is required when climbing, and increases grip through contact and bending of steel strands, ensuring safety and stability of operators, and increasing the firmness of the joints when falling at high speed, reducing operational complexity .
Smart Images
Figure CN222324153U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fall arresters, in particular to a fall arrester for a steel strand type fall arrester. Background Art
[0002] At present, when workers need to work on transmission towers, they often need anti-fall protection devices. The anti-fall device of the transmission tower is a protection measure for workers going up and down the tower. It is usually composed of one or more aluminum-clad steel strands laid along the main material of the tower from the tower leg to the top of the pole. In order to make the aluminum-clad steel strands fit the tower material better and prevent the aluminum-clad steel strands from swinging due to wind, UT wire clamps and suspension wire clamps are used to divide them into multiple sections and fix them on the tower;
[0003] When operators perform high-altitude operations, the accuracy of the height of the transmission tower that needs to be inspected is low, and the damage position varies greatly. Therefore, operators need to selectively stay at different heights. However, the existing fall arrester can only trigger the locking action when falling at high speed. Therefore, when operators need to suspend themselves at high altitudes, operators not only need to wear full-body safety belts when climbing, but also need to carry an additional single suspension safety belt. Therefore, they need to carry an additional suspension cable hook, which greatly increases the weight carried by the operators.
[0004] Therefore, it is necessary to propose a fall arrester for a steel strand type fall arrester to solve the above problems. Utility Model Content
[0005] The utility model aims to provide a fall arrester for a steel strand type fall arrest device to solve the problem.
[0006] To achieve the above object, the utility model provides the following technical solutions: a fall arrester for a steel strand type fall arrester, comprising a fall arrester shell and a wire holding tube fixedly arranged at one end of the fall arrester shell, a locking shell is rotatably arranged inside the fall arrester shell, an anti-fall block is rotatably arranged inside the locking shell, and the outer circle of the anti-fall block is arranged in an involute shape;
[0007] A plurality of half-clamping balls are fixedly arranged on the inner wall of the wire holding tube, and the half-clamping balls are arranged in two rows, and the half-clamping balls in one row are arranged in a gradually increasing diameter;
[0008] Two contact blocks are fixedly provided at the end of the locking shell, and a plurality of contact strips are fixedly provided at the outer side of the anti-falling block.
[0009] Preferably, a fixed shaft is fixedly provided through one end of the anti-fall shell, the locking shell and the anti-fall block are both rotatably connected to the outside of the fixed shaft, a limiting plate is fixedly provided on the outside of the fixed shaft, and a rotating plate is fixedly provided at one end of the anti-fall block.
[0010] Preferably, the rotating piece and the limiting piece are in the same vertical plane.
[0011] Preferably, an operating rod is fixedly provided on the outer side of the locking shell, and a rectangular groove for the operating rod to rotate through is opened on the upper end of the anti-fall shell.
[0012] Preferably, a first connecting ring and a second connecting ring are fixedly provided on the outer side of the anti-fall shell.
[0013] Preferably, the wire holding tube is arranged in a semicircular shape.
[0014] Preferably, magnetic blocks are fixedly provided on the ends of the rotating plate and the limiting plate that are away from each other.
[0015] Technical effects and advantages of the utility model:
[0016] 1. By setting the locking shell and the contact block, when the operator needs to stop for maintenance, the contact block can be used to contact the steel strand to replace the use of the safety belt, so that the operator does not need to carry an additional safety belt when climbing. In addition, by gradually enlarging the semi-clamping ball, the contact block and the semi-clamping ball are used to bend the steel strand to increase the grip effect and ensure its stability and safety.
[0017] 2. By using the gradually enlarged half-clamping ball and the anti-falling clamping block arranged in an involute shape, when the anti-falling shell is lowered at a high speed, the outer circle of the anti-falling clamping block gradually increases to clamp the steel cable in two directions, and the steel strand is bent to increase the grip effect. The anti-falling clamping block gradually increases its outer circle, so that the greater the force on the anti-falling clamping block, the more secure the clamping;
[0018] 3. By setting the rotating piece and the limit switch, the anti-fall block can be prevented from rotating in the opposite direction when the operator climbs to ensure the normal operation of the anti-fall block. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The utility model is a schematic diagram of the structure of the fall arrester used in the steel strand type fall arrest device.
[0020] Figure 2 It is a schematic diagram of the internal structure of the anti-fall shell of the utility model.
[0021] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of a fall arrester used in a steel strand type fall arrest device.
[0022] Figure 4 It is a schematic diagram of the internal structure of the locking shell of the utility model.
[0023] In the figure: 1, anti-fall shell; 101, wire holding tube; 2, locking shell; 3, contact block; 4, half-card ball; 5, anti-fall card block; 6, fixed shaft; 7, rotating plate; 8, limit plate; 9, contact strip; 10, operating rod; 11, first connecting ring; 12, second connecting ring. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] The utility model provides Figure 1 - Figure 4 The anti-fall device for a steel strand type anti-fall device shown in the figure comprises an anti-fall shell 1 and a wire holding tube 101 fixedly arranged at one end of the anti-fall shell 1. The wire holding tube 101 is arranged in a semicircular shape, which is more convenient for fitting the steel strand to lock the steel strand. A locking shell 2 is rotatably arranged inside the anti-fall shell 1. Two contact blocks 3 are fixedly arranged at the ends of the locking shell 2. The contact blocks 3 are made of hard rubber material to increase friction. The contact blocks 3 only temporarily bear the weight of the operator himself. Therefore, while increasing friction, the wear of the contact blocks 3 is reduced. An anti-fall block 5 is rotatably arranged inside the locking shell 2. The outer circle of the anti-fall block 5 is arranged in an involute shape.
[0026] A plurality of half-clamping balls 4 are fixedly arranged on the inner wall of the wire holding tube 101. The plurality of half-clamping balls 4 are arranged in two rows, and the diameters of the half-clamping balls 4 in one row are arranged in a gradually increasing order.
[0027] A plurality of contact strips 9 are fixedly provided on the outside of the anti-fall block 5. The anti-fall block 5 and the contact strips 9 are made of metal, which is a commonly used prior art and will not be described in detail here. The anti-fall block 5 is machined using a commonly used CNC machining center, which is a commonly used prior art and will not be described in detail here.
[0028] A fixed shaft 6 is fixedly provided through one end of the anti-fall shell 1, and the locking shell 2 and the anti-fall block 5 are both rotatably connected to the outside of the fixed shaft 6, and a limit plate 8 is fixedly provided on the outside of the fixed shaft 6. A rotating piece 7 is fixedly provided at one end of the anti-fall block 5, and the rotating piece 7 and the limit plate 8 are in the same vertical plane. A magnetic block is fixedly provided at one end of the rotating piece 7 and the limit plate 8 which are away from each other, and the mutual repulsive force between the magnetic blocks can prevent the anti-fall block 5 from rotating too much, which would make the anti-fall work unable to be performed.
[0029] An operating rod 10 is fixedly arranged on the outer side of the locking shell 2, and a rectangular groove for the operating rod 10 to rotate through is opened at the upper end of the anti-fall shell 1.
[0030] A first connecting ring 11 and a second connecting ring 12 are fixedly provided on the outside of the anti-fall shell 1, which are used to connect and fix the safety equipment worn by the operator to ensure the safety of the safety personnel. The first connecting ring 11 and the second connecting ring 12 are commonly used connecting rings, which are conventional existing means and will not be described in detail here.
[0031] Working principle: The operator installs the anti-fall shell 1, places the steel strand inside the wire-retaining tube, wears the full-body safety belt, checks its use date, and then connects the safety rope on the full-body safety belt to the first connecting ring 11 and the second connecting ring 12;
[0032] Then, the operator starts to climb up to work, so that the anti-falling shell 1 and the operator move upward together. During the movement, the anti-falling block 5 is set due to its shape and setting, and when the operator climbs up to work, the anti-falling block 5 rotates counterclockwise, such as Figure 4 , so that when the anti-falling shell 1 moves upward, the anti-falling block 5 will not abut against the steel strand, thereby completing the upward movement of the anti-falling block 5;
[0033] When the operator moves to the height that needs to be inspected, he only needs to rotate the operating rod 10, thereby driving the locking shell 2 to rotate, so that the locking shell 2 drives the contact block 3 to rotate, so that the contact block 3 at the lower end contacts the steel strand, so that the steel strand is staggered and clamped by the contact block 3 and the lowermost half-clamping ball 4, so that the staggered clamped steel strand is in a bent state, thereby increasing the force effect of the steel strand when it is stuck, and the operator can complete the maintenance without carrying an additional safety rope for hanging, and the operation of the locking shell 2 is simple and quick, and only needs to push the operating rod 10;
[0034] After the inspection is completed, the operator pushes the operating lever 10 to reset the locking shell 2, thereby completing the initial unlocking of the anti-fall shell 1. After the inspection is completed, it moves downward. When the anti-fall shell 1 descends at a faster speed, the differential speed between the anti-fall block 5 and the steel strand is larger, thereby causing the anti-fall block 5 to rotate clockwise, and then the anti-fall block 5 is set according to the principle of involute shape, and its outer circle is gradually enlarged, thereby gradually shortening the distance between the anti-fall block 5 and the steel strand, and then cooperates with the half-clamping ball 4 to complete the clamping of the steel strand, and during the operation of the locking shell 2, the anti-fall block 5 can also provide anti-fall protection for the locking shell 2.
Claims
1. A fall arrester for a steel strand type fall arrester, comprising a fall arrester shell (1) and a wire holding tube (101) fixedly arranged at one end of the fall arrester shell (1), characterized in that: A locking shell (2) is rotatably provided inside the anti-falling shell (1), and an anti-falling clamping block (5) is rotatably provided inside the locking shell (2), wherein the outer circle of the anti-falling clamping block (5) is arranged in an involute shape; A plurality of half-clamping balls (4) are fixedly arranged on the inner wall of the wire holding tube (101), and the half-clamping balls (4) are arranged in two rows, and the half-clamping balls (4) in one row are arranged in a gradually increasing diameter. Two contact blocks (3) are fixedly provided at the end of the locking shell (2), and a plurality of contact strips (9) are fixedly provided on the outer side of the anti-falling block (5).
2. The fall arrester for a steel strand type fall arrester according to claim 1, characterized in that: A fixed shaft (6) is fixedly provided through one end of the anti-falling shell (1); the locking shell (2) and the anti-falling block (5) are both rotatably connected to the outside of the fixed shaft (6); a limiting plate (8) is fixedly provided on the outside of the fixed shaft (6); and a rotating plate (7) is fixedly provided at one end of the anti-falling block (5).
3. The anti-fall device for a steel strand type anti-fall device according to claim 2, characterized in that: The rotating piece (7) and the limiting piece (8) are located in the same vertical plane.
4. The fall arrester for a steel strand type fall arrester according to claim 1, characterized in that: An operating rod (10) is fixedly provided on the outer side of the locking shell (2), and a rectangular groove for the operating rod (10) to rotate through is opened on the upper end of the anti-fall shell (1).
5. The fall arrester for a steel strand type fall arrester according to claim 1, characterized in that: A first connecting ring (11) and a second connecting ring (12) are fixedly provided on the outer side of the anti-fall shell (1).
6. The fall arrester for a steel strand type fall arrester according to claim 1, characterized in that: The wire holding tube (101) is arranged in a semicircular shape.
7. The fall arrester for a steel strand type fall arrester according to claim 2, characterized in that: A magnetic block is fixedly disposed on the ends of the rotating piece (7) and the limiting piece (8) that are away from each other.