Falling protector for steel strand type falling prevention device

Abstract

The utility model belongs to the technical field of anti-falling devices, and particularly relates to an anti-falling device for a steel strand type anti-falling device, which comprises shell plates arranged in parallel up and down, a first fixing block, a second fixing block and a third fixing block are respectively and fixedly connected between the shell plates, and arc hook plates are respectively and fixedly arranged on one sides, far away from the second fixing block, of the two shell plates. Fixing pieces are fixedly arranged at the corners, away from the third fixing blocks, of the shell plates, a rotating block is rotationally connected between the fixing pieces, pressing rods and rotating rods are fixedly connected to the two sides of the rotating block, and the pressing rods are arranged between the shell plates. When a pressing block presses a steel strand to stop a human body from falling, the gravity of the human body pulls a connecting ring downwards, the connecting ring pulls an inserting rod through a handle rod, the inserting rod pulls a sleeve block through a connecting block, the sleeve block compresses a spring, and a buffering effect is generated when the spring is compressed, so that the situation that legs of an operator are tightened by a safety lock and discomfort is caused due to quick braking is avoided; the adverse effect on the spine of the human body caused by the action of inertia due to instant stopping of acute braking is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of fall arrestor technology, specifically relating to a fall arrestor for a steel strand type fall arrestor device. Background Technology

[0002] The steel strand fall arrestor is a safety protection device used for high-altitude operations. Its core function is to provide rapid locking and impact buffering in the event of an accidental fall, reducing the injury to workers from the instantaneous impact force, through the steel strand guide rail and buffer braking structure.

[0003] In current steel strand type fall arresters, the worker connects their safety belt to the rope or hook of the device. During normal movement, the worker pushes the fall arrester forward along the steel strand. The inside of the fall arrester is usually equipped with two eccentric brake wheels or brake blocks. When moving forward, the rotating block flips up, causing the brake wheels or brake blocks to rotate away from the steel strand. The brake wheels or brake blocks do not affect the sliding of the fall arrester. When a person falls accidentally, the person's weight quickly pushes the fall arrester down along the steel strand. The rotating block is pulled down quickly, which drives the brake wheels or brake blocks to quickly approach the steel strand, squeezing the steel strand tightly, thus producing an emergency braking effect.

[0004] However, current fall arrestors react too quickly to the steel strands when braking, which can cause sudden braking. Although they can quickly catch falling workers, the rapid braking can constrict their legs, causing discomfort. Furthermore, the near-instantaneous stop and the resulting inertia can also have an adverse effect on the spine. Utility Model Content

[0005] To address the above problems, the purpose of this utility model is to provide a fall arrestor for a steel strand type fall arrestor, solving the problem that current fall arrestors react too quickly to the steel strand during braking, resulting in sudden braking. Although they can quickly pull the falling worker back, the rapid braking can constrict the worker's legs, causing discomfort. Furthermore, the near-instantaneous stop and the resulting inertia can also have adverse effects on the human spine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fall arrestor for a steel strand type fall arrestor, comprising shell plates arranged side by side, with fixing block one, fixing block two, and fixing block three fixedly connected between the shell plates respectively. Arc-shaped hook plates are fixedly installed on the sides of the two shell plates away from fixing block two. Fixing plates are fixedly installed at the corners of the shell plates away from fixing block three. A rotating block is rotatably connected between the fixing plates. Pressure rods and rotating rods are fixedly connected to both sides of the rotating block. The pressure rods are disposed between the shell plates, and a pressure bar is provided on the side of the pressure rod away from the rotating rod. The rotating rod has an insert rod inserted at one end away from the rotating block. A handle is fixedly connected to the end of the insert rod away from the rotating rod. A connecting ring is fixedly connected to the end of the handle rod away from the rotating rod. A connecting groove is formed through the upper and lower sides of the rotating rod. A stop block is fixedly connected to the outer side of the rotating rod near the handle rod at the connecting groove. A sleeve block is slidably sleeved on the outer side of the rotating rod at the end of the handle rod away from the stop block. A connecting block is fixedly connected between the sleeve block and the insert rod through the connecting groove. The connecting block is slidably connected to the connecting groove. A spring is fixedly installed between the stop block and the sleeve block.

[0007] The beneficial effects of this utility model are as follows: When a worker accidentally falls, the safety belt hook quickly pulls down the connecting ring. The connecting ring drives the rotating rod to rotate downwards via the handle, which in turn drives the rotating block to rotate. The rotating block, through the pressure rod, causes the pressure block to press down on the steel strand. Friction is generated between the pressure block and the steel strand, and the worker's weight is converted into pressure on the steel strand, causing the pressure block to tightly press down on the steel strand, preventing the worker from falling freely. When the pressure block presses down on the steel strand and stops the worker from falling, the worker's weight will pull down the connecting ring. The connecting ring then pulls the insert rod via the handle, which in turn pulls the sleeve block via the connecting block. The sleeve block compresses the spring, and the spring compression creates a buffering effect, preventing rapid braking that could cause the worker's legs to be acutely constricted by the safety lock, resulting in discomfort. It also prevents the worker's spine from being adversely affected by the inertia caused by sudden braking.

[0008] To ensure stability during spring compression;

[0009] As a further improvement to the above technical solution: a guide rod is inserted into the inner side of each spring, the guide rod is fixedly connected to the sleeve block, and the guide rod is inserted through the stop block.

[0010] The beneficial effects of this improvement are: the guide rod is provided to guide the movement between the stop block and the sleeve block, thereby increasing the stability of spring compression.

[0011] To facilitate quick assembly and disassembly of this device from the steel strand;

[0012] As a further improvement to the above technical solution: the arc hook plates of the two shell plates are arranged obliquely symmetrically above and below each other, the opening directions of the arc hook plates are close to each other, and there is a gap between the arc hook plates in the lateral direction.

[0013] The beneficial effects of this improvement are: the setting of two arc hook plates with opposite openings and gaps between them allows for quick assembly and disassembly from the steel strand, and the arc hook plates can stably hold the steel strand during sliding.

[0014] To facilitate the maintenance of the pressure block;

[0015] As a further improvement to the above technical solution: the second fixed block is positioned close to the rotating block, and there is a gap between the second fixed block and the third fixed block.

[0016] The beneficial effect of this improvement is that it allows the pressure bar to be rotated out from between the shell plates, making it easier to inspect and maintain the pressure block.

[0017] To improve the crimping contact between the pressure block and the steel strand;

[0018] As a further improvement to the above technical solution: the side of the pressure block away from the pressure rod is a rough concave arc surface.

[0019] The beneficial effect of this improvement is that it improves the crimping contact between the pressure block and the steel strand when the pressure block is pressing down on the steel strand.

[0020] To facilitate disassembly and replacement of the pressure block;

[0021] As a further improvement to the above technical solution: a sliding groove is provided on the side of the pressure rod away from the rotating rod, and a long bolt is threadedly connected to the end of the pressure rod away from the rotating block. The long bolt passes through and is inserted into the sliding groove. A slider is slidably connected to the inner side of the sliding groove. The slider is threadedly connected to the long bolt and the slider is fixedly connected to the pressure block.

[0022] The beneficial effects of this improvement are: by setting a slider, it is easy to disassemble and replace the pressure block, and it is also easy to adjust the installation position of the slider relative to the pressure rod.

[0023] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0026] Figure 3 This is a side view of the structure between the shell plates in this utility model;

[0027] Figure 4 This is a side sectional view of the rotating rod in this utility model;

[0028] Figure 5 This is a side sectional view of the pressure bar in this utility model;

[0029] In the diagram: 1. Shell plate; 2. Fixing block one; 3. Fixing block two; 4. Fixing block three; 5. Arc hook plate; 6. Fixing piece; 7. Rotating block; 8. Pressure rod; 81. Sliding groove; 82. Long bolt rod; 9. Pressure block; 91. Sliding block; 10. Rotating rod; 11. Insert rod; 12. Handle rod; 13. Connecting ring; 14. Connecting groove; 15. Stop block; 16. Sleeve block; 17. Connecting block; 18. Spring; 19. Guide rod. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0031] like Figure 1 — Figure 5As shown: A fall arrestor for a steel strand type fall arrestor includes shell plates 1 arranged side by side. Fixing blocks 2, 3, and 4 are fixedly connected between the shell plates 1. Arc hook plates 5 are fixedly installed on the sides of the two shell plates 1 away from fixing blocks 3. Fixing pieces 6 are fixedly installed at the corners of the shell plates 1 away from fixing blocks 4. A rotating block 7 is rotatably connected between the fixing pieces 6. Pressure rods 8 and rotating rods 10 are fixedly connected to both sides of the rotating block 7. The pressure rods 8 are located between the shell plates 1. A pressure block 9 is installed on the side of the pressure rod 8 away from the rotating rod 10. An insertion rod 11 is inserted into the end of the rotating rod 10 away from the rotating block 7. A handle is fixedly connected to the end of the insertion rod 11 away from the rotating rod 10. 12. A connecting ring 13 is fixedly connected to the end of the handle 12 away from the rotating rod 10. A connecting groove 14 is formed through the upper and lower sides of the rotating rod 10. A stop block 15 is fixedly connected to the outer side of the rotating rod 10 at the end of the connecting groove 14 near the handle 12. A sleeve block 16 is slidably sleeved at the outer side of the rotating rod 10 at the end of the handle 12 away from the stop block 15. A connecting block 17 is fixedly connected between the sleeve block 16 and the insert rod 11 through the connecting groove 14. The connecting block 17 is slidably connected to the connecting groove 14. A spring 18 is fixedly installed between the stop block 15 and the sleeve block 16. When the worker accidentally falls, the safety belt hook quickly pulls down the connecting ring 13. The connecting ring 13 drives the rotating rod 10 to rotate downward through the handle 12. 10 drives the rotating block 7 to rotate. The rotating block 7 drives the pressure block 9 to press down on the steel strand through the pressure rod 8. Friction is generated between the pressure block 9 and the steel strand. The person's weight is converted into pressure on the steel strand by the pressure block 9, making the pressure block 9 press firmly on the steel strand to prevent the person from falling freely. When the pressure block 9 presses down on the steel strand to stop the person from falling, the person's weight will pull down the connecting ring 13. The connecting ring 13 pulls the insert rod 11 through the handle 12. The insert rod 11 pulls the sleeve block 16 through the connecting block 17. The sleeve block 16 compresses the spring 18. The compression of the spring 18 produces a buffering effect to prevent the worker's legs from being acutely tightened by the safety lock due to rapid braking, causing discomfort. It also prevents the adverse effects on the human spine due to the inertia caused by sudden stopping during acute braking. The inner side of the spring 18 is fitted with inserts. A guide rod 19 is fixedly connected to the sleeve block 16. The guide rod 19 is inserted through the stop block 15. The guide rod 19 is used to guide the movement between the stop block 15 and the sleeve block 16, increasing the stability of the spring 18 under compression. The two arc hook plates 5 of the shell plates 1 are obliquely symmetrically arranged one above the other. The openings of the arc hook plates 5 are close to each other, and there is a gap between the arc hook plates 5 in the lateral direction. The arrangement of two arc hook plates 5 with opposite openings and a gap between them allows for quick assembly and disassembly from the steel strand. When sliding, the arc hook plates 5 can stably hold the steel strand. The second fixing block 3 is located close to the rotating block 7. There is a gap between the second fixing block 3 and the third fixing block 4, allowing the pressure rod 8 to rotate out between the shell plates 1, facilitating the maintenance of the pressure block 9.The side of the pressure block 9 away from the pressure rod 8 has a rough, concave arc surface, which improves the contact effect between the pressure block 9 and the steel strand when pressing it down. The side of the pressure rod 8 away from the rotating rod 10 has a sliding groove 81. A long bolt 82 is threadedly connected to the end of the pressure rod 8 away from the rotating block 7. The long bolt 82 passes through and is inserted into the sliding groove 81. A slider 91 is slidably connected to the inner side of the sliding groove 81. The slider 91 is threadedly connected to the long bolt 82 and fixedly connected to the pressure block 9. The slider 91 facilitates the disassembly and replacement of the pressure block 9 and allows for easy adjustment of the slider 91's position relative to the pressure rod 8.

[0032] Working principle and usage process of this utility model:

[0033] In use, the steel strand is passed through the shell plates 1, and the safety belt hook on the worker's body is attached to the connecting ring 13. When the worker moves upward, they can hold the rotating rod 10 and pull the shell plate 1 upward. The rotating rod 10 drives the pressure rod 8 to rotate through the rotating block 7. The pressure rod 8 drives the pressure block 9 away from the steel strand, so there is no friction between the pressure block 9 and the steel strand. If the worker accidentally falls, the safety belt hook will quickly pull down the connecting ring 13. The connecting ring 13 drives the rotating rod 10 downward through the handle 12. The rotating rod 10 drives the rotating block 7 to rotate, and the rotating block 7 drives the pressure block 9 away from the steel strand. Rod 8 drives pressure block 9 to press down on the steel strand. Friction is generated between pressure block 9 and the steel strand, and the person's weight is converted into pressure from pressure block 9 on the steel strand, causing pressure block 9 to tightly press against the steel strand and prevent the person from falling freely. When pressure block 9 stops the person from falling, the person's weight pulls down connecting ring 13. Connecting ring 13 pulls insert rod 11 through handle rod 12. Insert rod 11 pulls sleeve block 16 through connecting block 17. Sleeve block 16 compresses spring 18. The compression of spring 18 creates a buffering effect, preventing rapid braking that could cause the worker's legs to be acutely constricted by the safety lock, resulting in discomfort. The sudden stop caused by acute braking can have an adverse effect on the human spine due to inertia. Furthermore, guide rods 19 are inserted into the inner side of each spring 18, and are fixedly connected to the sleeve block 16. The guide rods 19 are inserted through the stop block 15 to guide movement between the stop block 15 and the sleeve block 16, increasing the stability of the spring 18 during compression. Additionally, the arc hook plates 5 of the two shell plates 1 are obliquely symmetrically arranged vertically, with their openings close to each other and a gap between them laterally. This arrangement of two arc hook plates with opposite openings and a gap between them... The hook plate 5 can be quickly installed and removed from the steel strand, and the arc-shaped hook plate 5 can stably hold the steel strand when sliding. In addition, the second fixing block 3 is set close to the rotating block 7, and there is a gap between the second fixing block 3 and the third fixing block 4, so that the pressure rod 8 can be rotated out from between the shell plates 1, which is convenient for the maintenance of the pressure block 9. In addition, the side of the pressure block 9 away from the pressure rod 8 is a rough concave arc surface, which makes the pressure block 9 have a better pressing contact with the steel strand when pressing it. Furthermore, by setting the slider 91, it is easy to disassemble and replace the pressure block 9, and it is easy to adjust the installation position of the slider 91 relative to the pressure rod 8.

[0034] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A fall arrestor for a steel strand type fall arrest device, characterized by: The system includes two shell plates (1) arranged side by side. Fixing blocks 1 (2), 2 (3), and 3 (4) are fixedly connected between the shell plates (1). Arc hook plates (5) are fixedly installed on the side of each shell plate (1) away from fixing block 2 (3). Fixing pieces (6) are fixedly installed at the corner of each shell plate (1) away from fixing block 3 (4). Rotating blocks (7) are rotatably connected between the fixing pieces (6). Pressure rods (8) and rotating rods (10) are fixedly connected to both sides of each rotating block (7). Pressure rods (8) are positioned between the shell plates (1). A pressure block (9) is installed on the side of the pressure rod (8) away from the rotating rod (10). An insertion rod (11) is inserted into the end of the rotating rod (10) away from the rotating block (7). A handle (12) is fixedly connected to the end away from the rotating rod (10). A connecting ring (13) is fixedly connected to the end of the handle (12) away from the rotating rod (10). A connecting groove (14) is provided through the upper and lower sides of the rotating rod (10). A stop block (15) is fixedly connected to the outer side of the rotating rod (10) at the end of the connecting groove (14) near the handle (12). A sleeve block (16) is slidably sleeved at the outer side of the rotating rod (10) at the end of the handle (12) away from the stop block (15). A connecting block (17) is fixedly connected between the sleeve block (16) and the insert rod (11) through the connecting groove (14). The connecting block (17) is slidably connected to the connecting groove (14). A spring (18) is fixedly provided between the stop block (15) and the sleeve block (16).

2. A fall arrestor for a steel strand type fall arrest device according to claim 1, characterized in that: Each spring (18) has a guide rod (19) inserted into its inner side. The guide rod (19) is fixedly connected to the sleeve block (16). The guide rod (19) is inserted into the through block (15).

3. A fall arrestor for a steel strand type fall arrest device according to claim 1, characterized in that: The two shell plates (1) have their arc hook plates (5) arranged obliquely and symmetrically, with the opening directions of the arc hook plates (5) close to each other, and there is a gap between the arc hook plates (5) in the lateral direction.

4. A fall arrestor for a steel strand type fall arrest device according to claim 1, characterized in that: The second fixing block (3) is positioned close to the rotating block (7), and there is a gap between the second fixing block (3) and the third fixing block (4).

5. A fall arrestor for a steel strand type fall arrest device according to claim 1, characterized in that: The side of the pressure block (9) away from the pressure rod (8) is a rough concave arc surface.

6. A fall arrestor for a steel strand type fall arrest device according to claim 1, characterized in that: The pressure rod (8) has a sliding groove (81) on the side away from the rotating rod (10). The end of the pressure rod (8) away from the rotating block (7) is threaded with a long bolt (82). The long bolt (82) passes through and is inserted into the sliding groove (81). A slider (91) is slidably connected to the inside of the sliding groove (81). The slider (91) is threadedly connected to the long bolt (82). The slider (91) is fixedly connected to the pressure block (9).

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