Quick switching safety belt

Abstract

The invention belongs to the technical field of personal protection equipment, and discloses a fast switching safety belt which comprises a center body, a connecting part used for being connected with a safety rope body is arranged on the center body, and the two ends of the center body are connected with a first safety hook and a second safety hook. Each of the first safety hook and the second safety hook comprises a hook body and a lock door used for selectively opening or closing a hook opening of the safety hook, the tail end of each lock door is connected with a mechanical interlocking mechanism, and the mechanical interlocking mechanisms are operatively connected with the lock doors of the first safety hook and the second safety hook. The first safety hook and the second safety hook are connected with each other and are configured to forcibly execute a sequential operation logic, so that at any moment, only the lock door of one of the first safety hook and the second safety hook is allowed to be in an openable state, and the lock doors of the two safety hooks are physically prevented from being opened at the same time; the falling risk of double separation possibly occurring due to the fact that a traditional double-leg safety rope depends on the manual operation sequence is thoroughly eliminated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of personal protective equipment, and particularly relates to a quick switching safety belt. BACKGROUND

[0002] In high-altitude operation, the personal fall protection system is required to be used to protect the safety of personnel, the system is composed of an anchor point, a safety belt (a body support device) and a safety rope (a connecting piece), that is, "fall prevention ABC", wherein the safety rope is used to connect the safety belt and the stable anchor point. The anchor point needs to be frequently switched when the operator moves, in order to avoid falling caused by completely separating from the anchor point during switching, the industry implements the "100% connection" principle, and a standard implementation scheme is to use a double-leg safety rope, a single safety rope is branched into two independent rope legs, and a safety hook is arranged at the end of each rope leg. By the alternating operation of "firstly hanging the safety hook of the new rope leg to the new anchor point and confirming the safety, and then removing the safety hook of the old rope leg", it is ensured that there is always one connection point.

[0003] The existing safety hook generally adopts a double or triple locking structure (such as needing to first release an auxiliary brake and then press a main lock door to open) to prevent accidental unhooking, although the passive safety is improved, there are still some defects: first, the operation efficiency is low, two-step fine operation is needed to open, the worker can switch the anchor point for hundreds of times a day, and the cumulative time is long and the progress is slow; second, the ergonomics is poor, a large finger force and accurate pinch are needed to open, and it is more difficult to operate in non-ideal postures such as wearing thick gloves, single-handed suspension and bad weather, and long-term use can easily cause hand and wrist fatigue and even injury; third, the risk of human error is high, the safety depends on the standard operation of personnel, physiological and psychological fatigue caused by complicated operation easily leads to violation (such as temporary "double separation"), and the complex process also increases the cognitive burden and may miss the lock state; fourth, there is a lack of integrated solution, the double-leg safety rope is only a simple combination of double safety hooks and rope legs, there is no mechanism to guide or enforce the correct operation process, and the "quick release" device (such as a tactical vest release buckle) in the market is only suitable for emergency equipment removal and cannot meet the daily anchor point switching demand.

[0004] Therefore, the quick switching safety belt is provided for the above problems. SUMMARY

[0005] In order to solve the problems in the background art, the application provides a quick switching safety belt, which has the advantages of being able to forcibly guarantee "100% connection" to eliminate the risk of falling, and being simple, convenient and efficient in operation and excellent in ergonomics.

[0006] In order to achieve the above purpose, the application provides the following technical scheme: a quick switching safety belt, comprising a center body, a connecting part for connecting with a safety rope body is arranged on the center body, and a first safety hook and a second safety hook are connected to the two ends of the center body. The first safety hook and the second safety hook each comprise a hook body and a door for selectively opening or closing the hook mouth of the safety hook; The tail end of the door is connected with a mechanical interlocking mechanism, which is operatively connected with the doors of the first safety hook and the second safety hook and is configured to enforce a sequential operation logic, so that at any time, only the door of one of the first safety hook and the second safety hook is allowed to be in an openable state, thereby physically preventing the doors of the two safety hooks from being opened simultaneously.

[0007] Preferably, the mechanical interlocking mechanism comprises an extension section at the tail end of the door, an end of the extension section is connected with a swing rod through a first rotating shaft, an end of the swing rod is connected with a moving block through a second rotating shaft, the moving block is slidingly connected with a central body through a guide rail, one side of the moving block is fixedly connected with a first fixed plate, the first fixed plate is connected with a return spring, an end of the return spring is connected with a second fixed plate, the second fixed plate is fixedly connected with the central body, a position between the two moving blocks is provided with a interlocking slide rod, a top of the interlocking slide rod is fixedly connected with a sliding push block, one side of the moving block is provided with a locking assembly, and the locking assembly is arranged on the central body.

[0008] Preferably, the central body is provided with an installation cavity for installing the mechanical interlocking mechanism, and the installation cavity is formed with structures matched with the moving blocks and the interlocking slide rod.

[0009] Preferably, a strip-shaped through groove matched with the sliding push block is formed in the top of the installation cavity, and the sliding push block passes through the strip-shaped through groove.

[0010] Preferably, an anti-skid pattern is arranged on the top surface of the sliding push block.

[0011] Preferably, the locking assembly comprises a vertical partition plate arranged in the installation cavity, the vertical partition plate is arranged on one side of the moving block, a movable plate is arranged on the side of the vertical partition plate away from the moving block, the movable plate is connected with the inner wall of the installation cavity through a spring, the side of the movable plate close to the vertical partition plate is respectively provided with a positioning pin rod and an extrusion slope block, the positioning pin rod and the extrusion slope block both penetrate through the vertical partition plate, the moving block is provided with a positioning groove at a position corresponding to the positioning pin rod, the positioning pin rod extends into the positioning groove, and the extrusion slope block penetrates through the vertical partition plate and is located on the displacement path of the interlocking slide rod.

[0012] Preferably, a through hole is formed in the vertical partition plate and is used for the positioning pin rod and the extrusion slope block to pass through.

[0013] Compared with the prior art, the present application has the following beneficial effects: 1. The mechanical interlocking mechanism enforces the sequential operation logic, allowing only one of the first and second safety hooks to be in an openable state at any time, physically preventing both from being opened simultaneously, ensuring that the worker remains connected to the anchor point with at least one safety hook during the anchor point switching process, completely eliminating the risk of "double disengagement" falling due to reliance on manual operation sequence in traditional double-leg safety ropes, addressing safety hazards caused by human error, and strictly ensuring the "100% connection" safety principle; 2. The mechanical interlocking mechanism's structural design makes the opening operation of the safety hook more convenient and efficient, eliminating the need for multiple precise actions like traditional double / triple locking structures; the design of the sliding push block with anti-slip patterns also improves operational convenience, making it easier to complete the switching even in adverse weather conditions, heavy protective gloves, or non-ideal working postures, significantly reducing the finger force consumption and fine operation burden of the worker, improving the efficiency of anchor point switching, and reducing the probability of hand and wrist muscle fatigue and repetitive strain injury, optimizing the ergonomics experience. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the partial cross-sectional structure of the center body of the present application; Figure 3 is a schematic diagram of the partial structure of the mechanical interlocking mechanism of the present application; Figure 4 is a schematic diagram of the structure of the moving block position of the present application; Figure 5 is a schematic diagram of the structure of the locking assembly of the present application.

[0015] In the figure: 1, center body; 2, connecting part; 3, first safety hook; 31, hook body; 32, lock door; 4, second safety hook; 5, mechanical interlocking mechanism; 51, extension section; 52, first pivot; 53, swing lever; 54, second pivot; 55, moving block; 56, first fixed plate; 57, return spring; 58, second fixed plate; 59, interlocking slide lever; 510, sliding push block; 6, locking assembly; 61, vertical partition; 62, movable plate; 63, spring; 64, positioning pin; 65, extrusion slope; 66, positioning groove; 7, mounting chamber; 8, strip-shaped through slot. DETAILED DESCRIPTION

[0016] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0017] As shown in Figures 1 to 5 The present application provides a quick switching safety belt, which comprises a center body 1, a connecting part 2 for connecting with a safety rope main body is arranged on the center body 1, the connecting part 2 can stably connect the safety rope, and provides a reliable upper connecting foundation for the whole safety belt, first and second safety hooks 3 and 4 are connected to both ends of the center body 1, and the double-hook design provides a prerequisite for anchor switching operation.

[0018] The first and second safety hooks 3 and 4 each comprise a hook body 31 and a lock door 32 for selectively opening or closing the hook mouth of the safety hook, wherein the hook body 31 can quickly hook the anchor, and the lock door 32 can reliably close the hook mouth to prevent accidental unhooking, and effectively guarantee the safety of single-hook connection.

[0019] The tail end of the lock door 32 is connected with a mechanical interlocking mechanism 5, the mechanical interlocking mechanism 5 is operatively connected with the lock doors 32 of the first and second safety hooks 3 and 4, and is configured to enforce a sequential operation logic, so that only one of the lock doors 32 of the first and second safety hooks 3 and 4 is allowed to be in an openable state at any time, thereby physically preventing both lock doors 32 from being opened at the same time, strictly guaranteeing the “100% connection” principle from a structural level, completely eliminating the falling risk of “double disengagement” during anchor switching, and solving the problem of easy mistakes in manual operation sequence of traditional double-leg safety ropes.

[0020] Specifically, the mechanical interlocking mechanism 5 includes an extension section 51 at the tail end of the lock door 32, which can effectively transmit the movement of the lock door 32. The end of the extension section 51 is connected to a swing rod 53 through a first rotating shaft 52, which allows the swing rod 53 to rotate flexibly and converts the movement of the extension section 51 into its own swing. The end of the swing rod 53 is connected to a moving block 55 through a second rotating shaft 54, which is adapted to motion form conversion to drive the moving block 55 to slide along the guide rail. The moving block 55 is connected to the center body 1 through the guide rail, which provides precise linear guidance for the moving block 55 and ensures accurate interlocking action. One side of the moving block 55 is fixedly connected to a first fixed plate 56, which is connected to a return spring 57. The end of the return spring 57 is connected to a second fixed plate 58 fixed to the center body 1. The return spring 57 can automatically reset the moving block 55 after operation to prepare for the next interlocking operation. A locking slide rod 59 is provided between the two moving blocks 55. The top of the locking slide rod 59 is fixedly connected to a sliding push block 510, which is convenient for personnel to manually push to trigger interlocking switching. The top surface of the sliding push block 510 is provided with anti-slip patterns to improve the operation friction force, making it easy to operate even with thick gloves or in bad weather, optimizing the ergonomics experience. One side of the moving block 55 is provided with a locking assembly 6, which is arranged on the center body 1 and used to lock the position of the moving block 55 to ensure the stability of the interlocking state.

[0021] Further, an installation chamber 7 is formed in the center body 1 for installing the mechanical interlocking mechanism 5, which provides integrated installation space for various components, making the structure more compact. The installation chamber 7 is formed with a structure matching the moving block 55 and the locking slide rod 59 to limit their movement and ensure movement accuracy.

[0022] Further, a strip-shaped through slot 8 is formed at the top of the installation chamber 7 and matches the sliding push block 510. The sliding push block 510 passes through the strip-shaped through slot 8, which provides a movement channel for the sliding push block 510 and limits its movement range to ensure reliable operation.

[0023] It is worth noting that the locking assembly 6 comprises a vertical partition plate 61 arranged in the mounting chamber 7, which is arranged on one side of the moving block 55 and plays a partitioning and supporting role. The side of the vertical partition plate 61 away from the moving block 55 is provided with a movable plate 62, which is connected to the inner wall of the mounting chamber 7 through a spring 63. The spring 63 provides elastic restoring force for the movable plate 62. The side of the movable plate 62 close to the vertical partition plate 61 is respectively provided with a positioning pin rod 64 and an extrusion slope block 65, both of which penetrate the vertical partition plate 61. The moving block 55 is provided with a positioning groove 66 corresponding to the positioning pin rod 64. When the positioning pin rod 64 extends into the positioning groove 66, the moving block 55 can be positioned and locked, ensuring the stability of the corresponding safety hook in the locked state. The extrusion slope block 65 penetrates the vertical partition plate 61 and is located on the displacement path of the interlocking slide rod 59. When the interlocking slide rod 59 moves, the slope surface of the extrusion slope block 65 can push the movable plate 62, so that the positioning pin rod 64 is separated from the positioning groove 66 to achieve unlocking, and the interlocking state switching is completed.

[0024] It is worth noting that the vertical partition plate 61 is provided with through holes for the positioning pin rod 64 and the extrusion slope block 65 to pass through, providing a channel for the movement of the two, ensuring smooth locking and unlocking action.

[0025] Working principle and process: In the initial state, both moving blocks 55 are in the locked state through the positioning pin rod 64 of the locking assembly 6 extending into the respective positioning groove 66, and the corresponding door lock 32 of the first safety hook 3 and the second safety hook 4 is also in the locked state. When you need to open a safety hook, you only need to push the sliding push block 510 to push the interlocking slide rod 59 to the side of the moving block 55 corresponding to the safety hook, for example, if you need to open the first safety hook 3, push the interlocking slide rod 59 to the left side. The interlocking slide rod 59 will extrude the extrusion slope block 65 of the left locking assembly 6, drive the movable plate 62 to compress the spring 63, and make the left positioning pin rod 64 separate from the positioning groove 66 of the left moving block 55 to release the lock. Then the interlocking slide rod 59 pushes the left moving block 55 to slide, drives the swing rod 53 to tilt through the second shaft 54, and pulls the first safety hook 3 to open the door lock 32, so that it rotates around the rotating shaft of the hook body 31. Similarly, if you need to open the second safety hook 4, you can push the interlocking slide rod 59 to the right side. The whole process always keeps the locking state of the other moving block 55, ensuring that only the door lock 32 of the target safety hook can be opened.

[0026] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0027] While the embodiments of the application have been shown and described herein, it will be understood by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made to the embodiments without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A quick switch safety belt comprising a central body (1), characterized in that: The center body (1) is provided with a connecting part (2) for connecting with the safety rope body, and the two ends of the center body (1) are connected with a first safety hook (3) and a second safety hook (4); The first safety hook (3) and the second safety hook (4) each include a hook body (31) and a lock door (32) for selectively opening or closing the safety hook mouth; The tail end of the lock door (32) is connected with a mechanical interlocking mechanism (5), the mechanical interlocking mechanism (5) is operatively connected with the lock door (32) of the first safety hook (3) and the second safety hook (4), and is configured to enforce a sequential operation logic, so that at any time, only the lock door (32) of one of the first safety hook (3) and the second safety hook (4) is allowed to be opened, thereby physically preventing the lock doors (32) of the two safety hooks from being opened at the same time.

2. A quick switch safety belt according to claim 1, characterized in that: The mechanical interlocking mechanism (5) includes an extension section (51) at the tail end of the lock door (32), an end of the extension section (51) is connected with a swing rod (53) through a first rotating shaft (52), an end of the swing rod (53) is connected with a moving block (55) through a second rotating shaft (54), the moving block (55) is slidingly connected with the center body (1) through a guide rail, one side of the moving block (55) is fixedly connected with a first fixed plate (56), the first fixed plate (56) is connected with a return spring (57), an end of the return spring (57) is connected with a second fixed plate (58), the second fixed plate (58) is fixedly connected with the center body (1), a locking slide rod (59) is arranged between the two moving blocks (55), a top of the locking slide rod (59) is fixedly connected with a sliding push block (510), one side of the moving block (55) is provided with a locking assembly (6), and the locking assembly (6) is arranged on the center body (1).

3. A quick switch safety belt according to claim 2, characterized in that: A mounting cavity (7) for mounting the mechanical interlocking mechanism (5) is formed in the center body (1), and the mounting cavity (7) is formed with a structure matched with the moving block (55) and the locking slide rod (59).

4. A quick switch safety belt according to claim 2, characterized in that: A strip-shaped through groove (8) matched with the sliding push block (510) is formed in the top of the mounting cavity (7), and the sliding push block (510) passes through the strip-shaped through groove (8).

5. The quick switch safety belt according to claim 1, wherein: Anti-skid lines are arranged on the top surface of the sliding push block (510).

6. A quick switch safety belt according to claim 3, characterized in that: The locking assembly (6) comprises a vertical partition plate (61) arranged in the mounting chamber (7), the vertical partition plate (61) is arranged on one side of the moving block (55), the side of the vertical partition plate (61) away from the moving block (55) is provided with a movable plate (62), the movable plate (62) is connected to the inner wall of the mounting chamber (7) through a spring (63), the side of the movable plate (62) close to the vertical partition plate (61) is respectively provided with a positioning pin rod (64) and an extrusion slope block (65), the positioning pin rod (64) and the extrusion slope block (65) all penetrate through the vertical partition plate (61), the moving block (55) is provided with a positioning groove (66) corresponding to the positioning pin rod (64), the positioning pin rod (64) extends into the positioning groove (66), and the extrusion slope block (65) penetrates through the vertical partition plate (61) and is located on the displacement path of the interlocking sliding rod (59).

7. A quick switch safety belt according to claim 6, characterized in that: The vertical partition plate (61) is provided with through holes for the positioning pin rod (64) and the extrusion slope block (65) to pass through.

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