Full-body safety belt for aerial work

Abstract

The application relates to the field of safety belts, and particularly discloses a full-body safety belt for aerial work, which comprises a shoulder belt, a waist ring, a leg ring and a connecting belt, is provided with a tightening box on one side of the back of a worker, and the shoulder belt and the connecting belt are movably connected in the tightening box; a buffering assembly capable of buffering the falling force of the worker is fixed to the side face of the tightening box away from the back of the worker; and a traction rope is arranged in the buffering assembly. When the worker suddenly falls during aerial work, the decelerating blocks in the two buffering members slide away from the corresponding connecting parts, gradually clamping the first buffering belt and the second buffering belt on the corresponding side, thereby slowing down the falling force of the worker, buffering the pulling force of the safety belt on the worker, avoiding the injury of the worker caused by the excessive pulling force, and in the buffering process, the traction rope is pulled, so that the shoulder belt and the leg ring are tightened on the worker, reducing the possibility of the separation of the safety belt from the worker.

Description

Technical Field

[0001] This invention relates to the field of safety belts, specifically a full-body safety belt for working at heights. Background Technology

[0002] Most existing high-altitude safety harnesses are five-point harnesses. When a worker suddenly falls, the harness exerts a sudden pulling force on the worker's body due to gravity, which may injure the worker's lumbar spine. Moreover, because the harness only partially fits the worker's body when taut, there is a gap between the part of the harness near the suspension and the worker's body. If the worker struggles in panic or is swayed by the wind, the worker may become separated from the harness, posing a significant safety hazard.

[0003] Therefore, it is necessary to design a full-body safety harness for high-altitude operations to alleviate the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a full-body safety harness for high-altitude operations, which overcomes the above-mentioned defects in the prior art.

[0005] According to the present invention, a full-body safety harness for high-altitude work includes shoulder straps, waist loops, leg loops, and connecting straps. A tightening box is provided on one side of the worker's back. The shoulder straps and the connecting straps are movably connected to the tightening box. A cushioning component is fixed on the side of the tightening box away from the worker's back to buffer the worker's falling force. A traction rope is provided inside the cushioning component. One end of the traction rope is connected to the shoulder straps and the tightening box. Under the pull of the traction rope, the shoulder straps and the leg loops are tightened on the worker's body.

[0006] With the above technical solution, when a worker suddenly falls while working at height, the cushioning component can reduce the force of the fall, thereby alleviating the pulling force of the safety belt on the worker and preventing injury due to excessive pulling force. At the same time, during the cushioning process, the traction rope is pulled, which tightens the shoulder straps and leg loops on the worker, reducing the possibility of the safety belt coming off the worker.

[0007] The invention is further configured such that: the buffer assembly includes two overlapping first buffer strips and second buffer strips, and two buffer members respectively disposed at one end of the first buffer strips and the second buffer strips; the other end of the first buffer strip is fixed to the tightening box; the first buffer strip and the second buffer strip are fixedly connected to the adjacent buffer members through a connecting part; the first buffer strip passes through the buffer member on the second buffer strip and slides with it; the second buffer strip passes through the buffer member on the first buffer strip and slides with it; there is friction between the first buffer strip and the second buffer strip and the buffer member on the corresponding side.

[0008] The above technical solution enables the first and second buffer strips in the buffer assembly to slide relative to each other, thereby extending the length of the buffer assembly and using the friction between the first and second buffer strips and the buffer component to reduce the speed at which the worker falls.

[0009] The present invention is further configured such that: a guide cavity is provided in the buffer member, the first buffer strip and the second buffer strip respectively pass through the guide cavity in the corresponding side of the buffer member, the upper and lower side walls of the guide cavity are inclined in the middle along the direction away from the connecting part, and two deceleration blocks are slidably connected in the two guide cavities, which are arranged on the upper and lower sides of the first buffer strip and the second buffer strip.

[0010] With the above technical solution, as the worker falls, the first and second buffer belts slide relative to the corresponding buffer components, causing the deceleration block to move away from the corresponding connecting part, thereby clamping the first or second buffer belt, increasing the friction between the deceleration block and the first or second buffer belt, and further reducing the relative sliding speed of the first or second buffer belt to the corresponding buffer component, thus buffering the falling force of the worker.

[0011] The present invention is further configured such that: a friction block made of rubber is fixedly provided on one side of the deceleration block near the first buffer strip or the second buffer strip, and the friction block abuts against the first buffer strip or the second buffer strip.

[0012] Through the above technical solution, the friction block can increase the friction between the first buffer strip or the second buffer strip and the deceleration block on the corresponding side, thereby ensuring that when the first buffer strip and the second buffer strip slide relative to each other, the deceleration block can be driven to slide away from the connecting part on the corresponding side.

[0013] The present invention is further configured such that: the first buffer belt and the second buffer belt are made of double-layer nylon tape stitched together, wherein the double-layer nylon tape in the first buffer belt has a double-layer structure along its length direction, the traction rope is slidably connected to the double-layer structure, and the end of the traction rope away from the tightening box is fixedly connected to the buffer member fixedly connected to the second buffer belt.

[0014] Through the above technical solution, as the first buffer belt and the second buffer belt slide relative to each other, the buffer component with the fixed traction rope can pull the traction rope.

[0015] The invention is further configured such that: the tightening box is "U" shaped, the interior of the tightening box is hollow, the two vertical parts of the interior cavity of the tightening box are vertical cavities, the horizontal part of the interior cavity of the tightening box is a horizontal cavity, two vertically symmetrical sliders are slidably connected in the vertical cavity, one end of the shoulder strap is fixedly connected to the upper slider, one end of the connecting strap is fixedly connected to the lower slider, and the end of the traction rope away from the buffer extends into the horizontal cavity and is divided into four strands, the four strands of the traction rope being fixedly connected to the four sliders respectively.

[0016] With the above technical solution, when the traction rope is pulled, the four strands connected to the slider in the traction rope can pull the four sliders simultaneously, thereby pulling part of the shoulder strap and connecting strap into the tightening box.

[0017] The present invention is further configured such that: the traction rope is made of aramid fiber and its surface is covered with a layer of polyethylene fiber.

[0018] Through the above technical solution, the traction rope made of aramid fiber has high wear resistance and good tensile strength, while the layer of polyethylene fiber covering its surface can reduce the friction between the surface of the traction rope and the double-layer structure in the first buffer zone.

[0019] The invention is further configured such that: in each of the vertical cavities, the portion near the transverse cavity is rotatably connected to two sets of guide structures, each set of guide structures includes two symmetrically arranged guide wheels whose outer peripheries abut against each other, and each guide wheel has a groove formed in its outer periphery. The four strands of the traction rope located in the tightening box pass through the four sets of guide structures respectively, and the grooves on the outer periphery of the two guide wheels in each set of guide structures are respectively engaged on the outer periphery of the four strands of traction rope.

[0020] The above technical solution reduces the friction between the four strands of the traction rope connected to the slider and the side walls of the vertical and horizontal cavities during the pulling process, thereby reducing the wear of the traction rope and lowering the friction between the traction rope and the vertical and horizontal cavities.

[0021] The present invention is further configured such that: the shoulder strap and the end of the connecting strap away from the tightening box are both sewn onto the waist ring, and the leg ring is sewn onto the waist ring.

[0022] The above technical solutions enable workers to wear safety belts completely.

[0023] The beneficial effects of this invention are as follows: When a worker suddenly falls while working at height, the first and second buffer belts slide relative to each other due to the pull, causing the deceleration blocks in the two buffer components to slide away from the corresponding side of the connection, thereby gradually clamping the first and second buffer belts on the corresponding side, thus gradually slowing down the relative speed of the first and second buffer belts, thereby reducing the force of the worker's fall, so that the pull force of the safety belt on the worker is buffered, avoiding injury to the worker due to excessive pull force. At the same time, during the buffering process, the traction rope is pulled, thereby tightening the shoulder straps and leg loops on the worker, reducing the possibility of the safety belt detaching from the worker. Attached Figure Description

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

[0025] Figure 2 This is the present invention. Figure 1 A diagram of AA in the middle;

[0026] Figure 3 This is a schematic diagram of the deceleration block component in this invention;

[0027] Figure 4 This is a cross-sectional view of the tightening box component in this invention;

[0028] Figure 5 This is the present invention. Figure 2 Enlarged view of point B in the middle;

[0029] Figure 6 This is the present invention. Figure 2 Enlarged diagram of point C in the middle.

[0030] In the picture:

[0031] 10. Shoulder strap; 11. Waist ring; 12. Leg ring; 13. Connecting belt; 20. Tightening box; 22. Slider; 23a. Vertical cavity; 23b. Horizontal cavity; 24. Guide wheel; 30. Buffer; 31a. First buffer belt; 31b. Second buffer belt; 32. Traction rope; 33. Deceleration block; 34. Friction block; 35. Guide cavity; 36. Connecting part. Detailed Implementation

[0032] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are merely for the purpose of simplifying the description of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0033] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is only used to describe one or more specific embodiments of this invention and does not strictly limit the scope of protection specifically claimed by this invention. As used herein, the terms up and down and left and right are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors. The specific features of this full-body safety harness for high-altitude work are described in detail below:

[0034] An embodiment of the present invention:

[0035] Reference Figure 1 , Figure 6 This invention provides a full-body safety harness for high-altitude work, including a shoulder strap 10, a waist ring 11, leg rings 12, and a connecting strap 13. The shoulder strap 10, waist ring 11, leg rings 12, and connecting strap 13 are all made of nylon. A tightening box 20 is provided on one side of the worker's back. A rubber pad is fixed to the side of the tightening box 20 closest to the worker's back. The tightening box 20 is made of stainless steel to ensure high rigidity and reduce the corrosion of the worker's sweat. The shoulder strap 10 and connecting strap 13 are movably connected to the tightening box 20. A buffer component is fixed to the side of the tightening box 20 away from the worker's back to cushion the worker's fall force. A traction rope 32 is provided inside the buffer component. One end of the traction rope 32 is connected to the shoulder strap 10 and the tightening box 20. Under the pull of the traction rope 32, the shoulder strap 10 and leg rings 12 are tightened on the worker's body.

[0036] Reference Figure 5The buffer assembly includes two overlapping first buffer strips 31a and second buffer strips 31b, and two buffer members 30 respectively disposed at one end of the first buffer strips 31a and second buffer strips 31b. The buffer members 30 are made of polyester carbon fiber material, giving them high strength and rigidity. The inner wall of the guide cavity 35 is smooth, and the deceleration block 33 is made of stainless steel. The side of the deceleration block 33 that abuts against the side wall of the guide cavity 35 is a smooth surface. The other end of the first buffer strip 31a is fixed to the tightening box 20, and the other end of the second buffer strip 31b is fixed with a metal hanging ring. The first buffer strips 31a and second buffer strips 31b are fixedly connected to their adjacent buffer members 30 through a connecting part 36. The buffer belt 31a passes through the buffer member 30 on the second buffer belt 31b and slides with it. The second buffer belt 31b passes through the buffer member 30 on the first buffer belt 31a and slides with it. There is friction between the first buffer belt 31a and the second buffer belt 31b and the buffer member 30 on the corresponding side. A guide cavity 35 is provided in the buffer member 30. The first buffer belt 31a and the second buffer belt 31b respectively pass through the guide cavity 35 in the corresponding side of the buffer member 30. The upper and lower side walls of the guide cavity 35 are inclined in the middle along the side away from the connecting part 36. Two deceleration blocks 33 are slidably connected in the two guide cavities 35, which are arranged on the upper and lower sides of the first buffer belt 31a and the second buffer belt 31b.

[0037] Reference Figure 3 Each deceleration block 33 has a rubber friction block 34 fixedly installed on one side of the deceleration block 33 near the first buffer strip 31a or the second buffer strip 31b. The friction block 34 abuts against the first buffer strip 31a or the second buffer strip 31b. The friction block 34 is made of rubber and is higher than the side of the deceleration block 33 that abuts against the first buffer strip 31a or the second buffer strip 31b. There is a large friction force between the friction block 34 and the first buffer strip 31a or the second buffer strip 31b.

[0038] Reference Figure 6 The first buffer belt 31a and the second buffer belt 31b are made of double-layer nylon strips sewn together. The double-layer nylon strip in the first buffer belt 31a has a double-layer structure along its length. The traction rope 32 is slidably connected in the double-layer structure. The end of the traction rope 32 away from the tightening box 20 is fixedly connected to the buffer member 30 which is fixedly connected to the second buffer belt 31b.

[0039] Reference Figure 4The tightening box 20 is H-shaped and hollow inside. The two vertical sections of the internal cavity of the tightening box 20 are vertical cavities 23a, and the horizontal section is a horizontal cavity 23b. Two symmetrically positioned sliders 22 are slidably connected within the vertical cavity 23a. One end of the shoulder strap 10 is fixedly connected to the upper slider 22, and one end of the connecting strap 13 is fixedly connected to the lower slider 22. The traction rope 32, away from the buffer 30, passes through the side wall of the horizontal cavity 23b and extends into the horizontal cavity 23b, dividing into four strands. The four strands of the traction rope 32 are fixedly connected to the four sliders 22 respectively. The traction rope 32 is made of aramid fiber and its surface is covered with a layer of polyethylene fiber. The part of each vertical cavity 23a near the transverse cavity 23b is rotatably connected to two sets of guide structures. Each set of guide structures includes two symmetrically arranged guide wheels 24 with their outer peripheries abutting each other. Each guide wheel 24 has a groove on its outer periphery. The four strands of the traction rope 32 located in the tightening box 20 pass through the four sets of guide structures respectively. The grooves on the outer periphery of the two guide wheels 24 of each set of guide structures are respectively locked on the outer periphery of the four strands of traction rope 32.

[0040] Reference Figure 1 The shoulder straps 10 and the connecting straps 13 are sewn to the waist ring 11 at the ends away from the tightening box 20. The leg rings 12 are sewn to the waist ring 11. Nylon straps are sewn to the two shoulder straps 10 at the position in front of the worker's chest. The two nylon straps are connected by buckles. The two ends of the waist ring 11 are located on the front of the worker's abdomen. The two ends of the waist ring 11 are connected by buckles.

[0041] When wearing the safety belt, the worker's lower limbs are inserted between the two leg loops 12, and the shoulder straps 10 and connecting straps 13 are worn on the body. The tightening box 20 is fitted against the back and the buckle is fastened.

[0042] The metal hanging ring at the end of the second buffer belt 31b is attached to a fixed position for high-altitude operations, thereby enabling the safety belt to provide safety protection for high-altitude workers.

[0043] When a worker falls suddenly from a height, the first buffer belt 31a and the second buffer belt 31b are pulled together, causing them to slide relative to each other. This causes the deceleration block 33 to slide away from the connecting part 36 on the corresponding side. Due to the guiding effect of the side wall of the guide cavity 35, both the first buffer belt 31a and the second buffer belt 31b are squeezed by the deceleration blocks 33 on both sides, thereby increasing the friction between the deceleration block 33 and the first buffer belt 31a and the second buffer belt 31b. This reduces the relative sliding speed of the first buffer belt 31a and the second buffer belt 31b, thus slowing down the worker's fall and preventing the worker from being injured when the fall speed suddenly stops after falling too fast.

[0044] During the worker's fall, the buffer 30 fixed to the second buffer belt 31b pulls the traction rope 32. Since the worker's pulling force on the shoulder strap 10 is small in the initial stage of the fall, under the pull of the traction rope 32, the four sliders 22 move towards the transverse cavity 23b, thereby causing part of the length of the shoulder strap 10 and the connecting strap 13 to be retracted into the tightening box 20, thus tightening the safety belt on the worker's body and preventing the worker from detaching from the safety belt due to struggle or shaking when the safety belt is tightened.

[0045] Those skilled in the art will appreciate that various modifications to the above embodiments can be made without departing from the overall spirit and concept of the present invention. All such modifications fall within the protection scope of the present invention. The protection scheme of the present invention is defined by the appended claims.

Claims

1. A full-body safety harness for aerial work, comprising a shoulder harness (10), a waist harness (11), a leg harness (12) and a connecting harness (13), characterized in that: A tightening box (20) is provided on one side of the worker's back. The shoulder strap (10) and the connecting strap (13) are movably connected to the tightening box (20). A buffer assembly that can cushion the worker's fall force is fixed on the side of the tightening box (20) away from the worker's back. A traction rope (32) is provided in the buffer assembly. One end of the traction rope (32) is connected to the shoulder strap (10) and the tightening box (20). Under the pull of the traction rope (32), the shoulder strap (10) and the leg loop (12) are tightened on the worker's body.

2. The full-body harness for aerial work according to claim 1, characterized in that: The buffer assembly includes two overlapping first buffer strips (31a) and second buffer strips (31b) and two buffer members (30) respectively disposed at one end of the first buffer strips (31a) and the second buffer strips (31b). The other end of the first buffer strip (31a) is fixed to the tightening box (20). The first buffer strip (31a) and the second buffer strip (31b) are fixedly connected to the adjacent buffer members (30) through a connecting part (36). The first buffer strip (31a) passes through the buffer member (30) on the second buffer strip (31b) and slides with it. The second buffer strip (31b) passes through the buffer member (30) on the first buffer strip (31a) and slides with it. There is friction between the first buffer strip (31a) and the second buffer strip (31b) and the corresponding buffer member (30).

3. The full-body harness for aerial work according to claim 2, characterized in that: The buffer (30) has a guide cavity (35) inside. The first buffer band (31a) and the second buffer band (31b) pass through the guide cavity (35) inside the buffer (30) on the corresponding side. The upper and lower side walls of the guide cavity (35) are inclined in the middle along the side away from the connecting part (36). Two deceleration blocks (33) are slidably connected in the two guide cavities (35) and are arranged on the upper and lower sides of the first buffer band (31a) and the second buffer band (31b).

4. The full-body harness for aerial work according to claim 3, characterized in that: Each of the deceleration blocks (33) has a friction block (34) made of rubber fixed on one side near the first buffer strip (31a) or the second buffer strip (31b), and the friction block (34) abuts against the first buffer strip (31a) or the second buffer strip (31b).

5. The full-body harness for aerial work according to claim 2, characterized in that: The first buffer band (31a) and the second buffer band (31b) are made of double-layer nylon tape stitched together. The double-layer nylon tape in the first buffer band (31a) has a double-layer structure along its length. The traction rope (32) is slidably connected to the double-layer structure. The end of the traction rope (32) away from the tightening box (20) is fixedly connected to the buffer member (30) fixedly connected to the second buffer band (31b).

6. The full-body harness for aerial work according to claim 5, characterized in that: The tightening box (20) is "H" shaped and hollow inside. The two vertical parts of the internal cavity of the tightening box (20) are vertical cavities (23a) and the horizontal part of the internal cavity of the tightening box (20) is a horizontal cavity (23b). Two vertically symmetrical sliders (22) are slidably connected inside the vertical cavity (23a). One end of the shoulder strap (10) is fixedly connected to the upper slider (22), and one end of the connecting strap (13) is fixedly connected to the lower slider (22). The end of the traction rope (32) away from the buffer (30) extends into the horizontal cavity (23b) and is divided into four strands. The four strands of the traction rope (32) are fixedly connected to the four sliders (22) respectively.

7. The full-body harness for aerial work according to claim 6, characterized in that: The traction rope (32) is made of aramid fiber and its surface is covered with a layer of polyethylene fiber.

8. The full-body harness for aerial work according to claim 6, characterized in that: Each vertical cavity (23a) near the transverse cavity (23b) is rotatably connected to two sets of guide structures. Each set of guide structures includes two symmetrically arranged guide wheels (24) with their outer peripheries abutting each other. Each guide wheel (24) has a groove on its outer periphery. The four strands of the traction rope (32) located in the tightening box (20) pass through the four sets of guide structures respectively. The grooves on the outer periphery of the two guide wheels (24) of each set of guide structures are respectively engaged on the outer periphery of the four strands of the traction rope (32).

9. The full-body harness for aerial work according to claim 6, characterized in that: The shoulder strap (10) and the connecting strap (13) are sewn onto the waist ring (11) at the end away from the tightening box (20), and the leg ring (12) is sewn onto the waist ring (11).

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