A self-retracting lanyard device and method of use

Abstract

This invention relates to the field of construction equipment technology, and in particular to an automatically convertible and reusable safety belt device, comprising a safety belt shackle, a steel strand, and a fastener; the steel strand is laterally positioned on the outside of a fixed building via the fastener; the fastener includes a fastener body and a fastener connector, the fastener body being spirally sleeved on the steel strand, the fastener connector being fixedly connected to the outside of the fastener body, and the fastener connector being connected to the fixed building; the safety belt shackle includes a safety shackle body, a safety belt loop, and a loop connector, the safety shackle body being spirally movably sleeved on the steel strand, the safety belt loop being connected to the safety shackle body via the loop connector, the safety belt loop being used to fasten the safety belt buckle, the safety shackle body being adapted to the fastener body, the safety belt shackle sliding along the steel strand and rotating spirally to move the safety belt buckle from one side of the fastener to the other side.

Description

Technical Field

[0001] This invention relates to the field of construction equipment technology, and more specifically, to a safety belt device that can be automatically converted and reused repeatedly, and its method of use. Background Technology

[0002] In construction engineering, workers performing tasks involving height or near edges must wear safety belts for protection. However, practice has shown that existing safety belts for construction have the following problems: First, in some demanding work environments, there is nowhere to fasten the safety belt, threatening the lives of workers and affecting construction safety; second, during mobile or continuous operations, the safety belt fastening position needs to be frequently changed, and the safety belt may temporarily detach from the fastening device during these changes, posing a risk of falling and also affecting construction safety. Therefore, it is necessary to invent a safety belt fastening device for mobile operations to solve the above-mentioned technical problems. Summary of the Invention

[0003] This invention aims to overcome the problems of inconvenient safety belt fastening and the need to change the safety belt fastening position when working at heights or near edges. It provides a safety belt device that can be quickly installed, portable and fixed, improves the convenience of fastening safety belts for working at heights and near edges, improves construction safety, reduces the risk of safety belt switching, and can be reused repeatedly with automatic conversion and recycling capabilities.

[0004] The technical solution of the present invention is as follows:

[0005] An automatically convertible and reusable seat belt device includes a seat belt clasp, steel strands, and a fastener;

[0006] The steel strand is horizontally positioned on the outside of the fixed building via the fixing device;

[0007] The fastener includes a fastener body and a fastener connector. The fastener body is spirally sleeved on the steel strand. The fastener connector is fixedly connected to the outside of the fastener body and is connected to the fixed building.

[0008] The seat belt clasp includes a seat belt clasp body, a seat belt loop, and a loop connector. The seat belt clasp body is spirally mounted on the steel strand. The seat belt loop is connected to the seat belt clasp body via the loop connector. The seat belt loop is used to fasten the human seat belt buckle. The seat belt clasp body is adapted to the anchor body. The seat belt clasp slides along the steel strand and rotates spirally, causing the human seat belt buckle to move from one side of the anchor to the other side.

[0009] Furthermore, the safety clasp body has a safety clasp groove along the spiral direction, and a built-in clasp is slidably disposed in the safety clasp groove. The built-in clasp is fixedly connected to the clasp connector, and the built-in clasp slides in the safety clasp groove along the spiral direction of the clasp body.

[0010] Furthermore, an internal locking slot is provided on the outer side of the safety clasp body and at one end of the safety clasp slide groove. An internal locking plate is provided in the internal locking slot. The internal locking plate is rotatably connected to the safety clasp body by a rivet and is provided with a locking plate spring. The locking plate spring is used to support the internal locking plate to return to its original position. When the internal locking plate is in the returned state, it engages with the safety clasp body.

[0011] Furthermore, the width of both the retainer body and the safety clasp body gradually narrows from the middle to the ends, and the ends of both the retainer body and the clasp body are pointed.

[0012] Furthermore, the steel strands are arranged in a ring shape, and the ends of the steel strands are provided with steel strand connectors for connecting the ends of the steel strands.

[0013] Furthermore, the steel strand connector includes a meshing sleeve, a threaded tube, and a screw. The two meshing sleeves are respectively disposed at both ends of the steel strand and mesh with the steel strand. The threaded tube and the screw are respectively connected to the ends of the two meshing sleeves away from the steel strand, and the threaded tube and the screw are compatible.

[0014] Furthermore, the threaded tube is rotatably connected to the engagement sleeve located at one end of the steel strand, and the screw is fixedly connected to the engagement sleeve at the other end.

[0015] Furthermore, the fixed structure is a concrete structure, the fixing connector is a fixing plate, the fixing plate has bolt holes, and the fixing plate is connected to the concrete structure by expansion bolts.

[0016] Furthermore, the fixed structure is scaffolding, the fixing connector is a U-shaped clip, and the fixing device is connected to the scaffolding through the U-shaped clip.

[0017] The present invention also discloses a method for using a seat belt device that can be automatically switched and reused repeatedly, comprising the following steps:

[0018] S1. Preparation: Prepare a steel strand that meets the perimeter of the working area. Thread the main body of several fasteners onto the steel strand, ensuring that the spacing between the fasteners is less than or equal to 5m. Depending on the usage requirements, thread one or more safety belt shackle bodies onto the steel strand. Install the engagement sleeves with threaded tubes and screws at both ends of the steel strand.

[0019] S2. Fixing: Start fixing from one end of the steel strand, pass the expansion bolt through the fixing plate and fix it to the concrete building wall or fix the U-shaped clip to the scaffolding, and fix a fixing device on both sides of the corner of the steel strand. The distance between adjacent fixing devices is less than or equal to 5m. After the fixing devices are installed, screw the screws into the threaded pipe and tighten them.

[0020] S3. Operation: Simply attach the safety belt buckle to the safety belt shackle to begin the operation. Pull the safety rope on the safety belt, and slide and rotate the safety shackle along the steel strand to pass through other safety belt shackles and anchors to move the work position.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] First, the steel strand in this invention is installed using a fixing device. It can be fixed to the concrete wall using a fixing plate and expansion bolts that are fixedly connected to the fixing device body, or fixed to the scaffolding using a U-shaped clip that is fixedly connected to the fixing device body. The installation and disassembly are convenient and the strand can be reused repeatedly.

[0023] Secondly, the main body of the fixing device and the main body of the safety clasp in this invention both adopt a spiral structure and are compatible with each other, so that the safety belt clasp can rotate through the main body of the fixing device and other safety belt clasps, so that there is no need to change the safety belt fastening position when changing the work position, effectively solving the safety risks that exist in the process of changing the safety belt fastening position and improving construction safety.

[0024] Furthermore, the safety shackle body of the present invention is provided with a safety shackle groove, and the built-in locking component of the shackle can slide along the safety shackle groove during the rotation of the safety shackle body, thereby preventing the safety rope from getting tangled in the steel strand and affecting the smooth passage of the safety belt shackle through the fixing device or other safety belt shackles.

[0025] This invention can solve problems such as where to fasten safety belts and the need for frequent position changes, reduce the risk of falls from heights, improve construction safety management, and protect the lives of workers. It also features a simple structure, low cost, quick installation and adjustment, good stability, and can be reused repeatedly, making it suitable for most high-altitude and edge-prone work environments. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of the seat belt retainer in this invention.

[0028] Figure 2 This is a partial structural diagram of the seatbelt retainer in this invention.

[0029] Figure 3 yes Figure 2 A cross-sectional view of the seatbelt clasp.

[0030] Figure 4 This is a structural schematic diagram of the steel strand and steel strand connector in this invention.

[0031] Figure 5 This is a schematic diagram of the fixture in Embodiment 1 of the present invention.

[0032] Figure 6 This is a schematic diagram of the usage state of the automatically convertible and reusable seat belt device in Embodiment 1 of the present invention.

[0033] Figure 7 yes Figure 6 Enlarged view of the middle part of the structure.

[0034] Figure 8 This is a schematic diagram of the seat belt buckle passing through the retainer in Embodiment 1 of the present invention.

[0035] Figure 9 This is a schematic diagram of the fixture in Embodiment 2 of the present invention.

[0036] Figure 10 This is a schematic diagram of the usage status of the automatically convertible and reusable seat belt device in Embodiment 2 of the present invention.

[0037] Figure 11 yes Figure 10 Enlarged view of the middle part of the structure.

[0038] In the diagram: 1. Safety belt shackle; 101. Safety shackle body; 102. Safety belt lifting ring; 103. Lifting ring connector; 104. Safety shackle groove; 105. Lifting ring internal clamp; 106. Internal clamp pressure plate; 107. Clamping plate spring; 2. Steel strand; 3. Fixture; 301. Fixture body; 302. Fixture connector; 303. Bolt hole; 304. Expansion bolt; 4. Steel strand connector; 401. Engaging sleeve; 402. Threaded pipe; 403. Screw; 404. Spike; 5. Concrete structure; 6. Scaffolding; 7. Safety rope. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1:

[0041] like Figure 6 , Figure 7 As shown, the automatically convertible and reusable safety belt device in this embodiment includes a safety belt buckle 1, a steel strand 2, and a fastener 3. The steel strand 2 is connected end to end and installed on the outside of the concrete building 5, and the steel strand 2 is fixed to the outer wall of the concrete building 5 by the fastener 3. A safety belt buckle 1 for fastening the human safety belt buckle is sleeved on the steel strand 2.

[0042] In this embodiment, as Figure 5 , Figure 6 As shown, the fastener 3 includes a fastener body 301 and a fastener connector 302. The fastener body 301 is spirally sleeved on the steel strand 2, and the fastener connector 302 is fixedly connected to the outside of the fastener body 301. Specifically, the fastener body 301 is made of a long, spindle-shaped steel plate according to the working principle of a thread, and has a threaded structure of one and a half threads. The fastener connector 302 is a fixing plate welded to the fastener body 301. The fixing plate has bolt holes 303, and the fixing plate is fixed to the exterior wall of the concrete building 5 by expansion bolts 304. Preferably, the steel strand 2 is fixed by several fasteners, the distance between adjacent fasteners is less than or equal to 5m, and a fastener 3 is fixed on both sides of the corner of the steel strand 2, thereby widening the bend angle of the steel strand 2 to ensure that the safety belt shackle 1 can pass smoothly.

[0043] In this invention, such as Figure 1 As shown, the seat belt clasp 1 includes a seat belt clasp body 101, a seat belt loop 102, and a loop connector 103. The seat belt clasp body 101 is spirally mounted on the steel strand 2. The seat belt loop 102 is connected to the seat belt body 101 via the loop connector 103. The seat belt loop 102 is connected to the seat belt buckle for attaching the human body. Specifically, the seat belt clasp body 101 is also made of a long, spindle-shaped steel plate according to the thread working principle. The seat belt clasp body 101 has a two-thread structure, and it is compatible with the fixing body 301. The seat belt clasp 1 slides along the steel strand 2 and rotates spirally, causing the human body seat belt buckle to move from one side of the fixing body 3 or other seat belt clasp 1 to the other side.

[0044] like Figure 2 , Figure 3 As shown, the safety shackle body 101 has a safety shackle groove 104 along the spiral direction. A built-in shackle retainer 105 is slidably disposed in the safety shackle groove 104. The built-in shackle retainer 105 is fixedly connected to the shackle connector 103. The built-in shackle retainer 105 slides in the safety shackle groove 104 along the spiral direction of the safety shackle body 101. Therefore, when the safety belt shackle 1 spirally rotates past the anchor 3 or other safety belt shackles 1, it prevents the safety rope 7 connected to the human safety belt buckle from rotating with the safety shackle body 101, and prevents the safety rope 7 from getting tangled around the anchor 3 or other safety belt shackles 1, thus hindering the smooth passage of the safety belt shackle 1.

[0045] In this invention, to facilitate the installation of the built-in locking element 105 of the lifting ring into the safety ring slide groove 104, a built-in locking element slot is provided on the outer side of the safety ring body 101 and at one end of the safety ring slide groove 104. A built-in locking element pressure plate 106 is provided in the built-in locking element slot. The built-in locking element pressure plate 106 is rotatably connected to the safety ring body 101 by rivets and is provided with a locking element pressure plate spring 107. The locking element pressure plate spring 107 is used to support the reset of the built-in locking element pressure plate 106. When the built-in locking element pressure plate 106 is in the reset state, it engages with the safety ring body 101. The built-in locking element pressure plate 106 rotates inward towards the safety ring slide groove 104, facilitating the insertion of the built-in locking element 105 into the safety ring slide groove 104 through the built-in locking element slot. Then, under the action of the locking element pressure plate spring 107, the built-in locking element pressure plate 106 resets and engages with the ring body, preventing the built-in locking element 105 of the lifting ring from dislodging.

[0046] In this invention, such as Figure 4 As shown, the ends of the steel strands 2 are provided with steel strand connectors 4 for connecting the ends of the steel strands 2. Preferably, the steel strand connector 4 includes a meshing sleeve 401, a threaded tube 402, and a screw 403. The two meshing sleeves 401 are respectively disposed at both ends of the steel strands 2 and mesh with the steel strands 2. The inner side of the meshing sleeve 401 is provided with protrusions 404, thereby increasing the meshing degree between the meshing sleeve 401 and the steel strand 2. The threaded tube 402 and the screw 403 are respectively connected to the ends of the two meshing sleeves 401 away from the steel strands 2, and the threaded tube 402 and the screw 403 are adapted to each other. Preferably, the threaded tube 402 is rotatably connected to the meshing sleeve 401 located at one end of the steel strand 2, and the screw 403 is fixedly connected to the meshing sleeve 401 at the other end, so that when the threaded tube 402 is rotated to connect with the screw 403, the steel strand 2 will not rotate with the threaded tube 402.

[0047] See Figure 6 , Figure 7 , Figure 8The method of using the automatically convertible and reusable seat belt device in this embodiment includes the following steps:

[0048] S1. Preparation: Prepare a steel strand 2 that meets the perimeter of the working range. Thread the fixing body 301 of several fixing devices 3 onto the steel strand 2, and make the spacing between the fixing devices 3 less than or equal to 5m. According to the usage requirements, thread one or more safety belt shackle bodies 101 onto the steel strand 2. Install the engagement sleeve 401 with threaded tube 402 and screw 403 connected to both ends of the steel strand 2 respectively.

[0049] S2. Fixing: Starting from one end of the steel strand 2, fix the expansion bolt 304 through the fixing plate to the concrete building 5 wall, and fix a fixing device 3 on both sides of the corner of the steel strand 2. The distance between adjacent fixing devices is less than or equal to 5m. After the fixing device 3 is installed, screw 403 into the threaded tube 402 and tighten it.

[0050] S3. Operation: The operation can be carried out by attaching the human safety belt buckle to the safety belt shackle 102 of the safety belt shackle 1. Pull the safety rope 7 on the human safety belt, pull the safety shackle body 101 to slide and rotate along the steel strand 2 and pass through other safety shackle bodies 101 and fixing devices 3 to move the operation position.

[0051] Example 2:

[0052] The automatic convertible and reusable seat belt device in this embodiment differs from that in Embodiment 1 in that the fastener connector 302 is used.

[0053] like Figure 9 As shown, in this embodiment, the fastener connector 302 is a U-shaped clip. The side opposite the opening of the U-shaped clip is welded to the fastener body 301. The fastener is connected to the scaffold 6 through the U-shaped clip, thereby fixing the fastener 3. When the steel strand 2 is fixed to the scaffold 6 by the fastener, the steel strand 2 is located on the side of the scaffold 6 closer to the construction workers.

[0054] See Figure 10 , Figure 11 As shown, the method of using the automatically convertible and reusable seat belt device in this embodiment includes the following steps:

[0055] S1. Preparation: Prepare a steel strand 2 that meets the perimeter of the working range. Thread the fixing body 301 of several fixing devices 3 onto the steel strand 2, and make the spacing between the fixing devices 3 less than or equal to 5m. According to the usage requirements, thread one or more safety belt shackle bodies 101 onto the steel strand 2. Install the engagement sleeve 401 with threaded tube 402 and screw 403 connected to both ends of the steel strand 2 respectively.

[0056] S2. Fixing: Start fixing from one end of the steel strand 2. Fix the U-shaped clip to the scaffold 6. Fix two fixing devices 3 on both sides of the corner of the steel strand 2. The distance between adjacent fixing devices 3 is less than or equal to 5m. After the fixing devices 3 are installed, screw 403 into the threaded pipe 402 and tighten it.

[0057] S3. Operation: The operation can be carried out by attaching the human safety belt buckle to the safety belt shackle 102 of the safety belt shackle 1. Pull the safety rope 7 on the human safety belt, pull the safety shackle body 101 to slide and rotate along the steel strand 2 and pass through other safety shackle bodies 101 and fixing devices to move the operation position.

[0058] The steel strand 2 in this invention is installed by the fixing device 3. It can be fixed to the concrete component wall by the fixing plate and expansion bolt 304 fixedly connected to the fixing device body 301, or fixed to the scaffold 6 by the U-shaped clip fixedly connected to the fixing device body 301. It is easy to install and disassemble and can be reused repeatedly.

[0059] Both the main body of the fixing device 301 and the main body of the safety shackle 1 adopt a spiral structure and are compatible with each other, so that the safety belt shackle 1 can rotate through the main body of the fixing device 301 and other safety belt shackles 1, so that there is no need to change the safety belt fastening position when changing the work position, effectively solving the safety risks that exist in the process of changing the safety belt fastening position and improving construction safety.

[0060] The safety shackle body 101 is provided with a safety shackle groove 104. The built-in locking piece 105 of the shackle can slide along the safety shackle groove 104 during the rotation of the shackle body, thereby preventing the safety rope 7 from getting tangled in the steel strand 2 and affecting the smooth passage of the safety belt shackle 1 through the fixing device or other safety belt shackles 1.

[0061] This invention can solve problems such as where to fasten safety belts and the need for frequent position changes, reduce the risk of falls from heights, improve construction safety management, and protect the lives of workers. It also features a simple structure, low cost, quick installation and adjustment, good stability, and can be reused repeatedly, making it suitable for most high-altitude and edge-prone work environments.

[0062] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seatbelt device capable of automatic conversion and repeated use, characterized in that, Includes seat belt clasps (1), steel strands (2), and fasteners (3); The steel strand (2) is horizontally positioned on the outside of the fixed building via the fixing device (3); The fixture (3) includes a fixture body (301) and a fixture connector (302). The fixture body (301) is spirally sleeved on the steel strand (2). The fixture connector (302) is fixedly connected to the outside of the fixture body (301) and is connected to the fixed building. The seat belt buckle (1) includes a seat belt buckle body (101), a seat belt loop (102), and a loop connector (103). The seat belt buckle body (101) is spirally mounted on the steel strand (2). The seat belt loop (102) is connected to the seat belt buckle body (101) through the loop connector (103). The seat belt loop (102) is used to fasten the human safety belt buckle. The seat belt buckle body (101) is adapted to the fixing body (301). The seat belt buckle (1) slides along the steel strand (2) and rotates in a spiral motion, causing the human safety belt buckle to move from one side of the fixing device (3) to the other side.

2. The automatically convertible and reusable seatbelt device according to claim 1, characterized in that, The safety clasp body (101) has a safety clasp groove (104) along the spiral direction. A lifting ring built-in clamp (105) is slidably disposed in the safety clasp groove (104). The lifting ring built-in clamp (105) is fixedly connected to the lifting ring connector (103). The lifting ring built-in clamp (105) slides in the safety clasp groove (104) along the spiral direction of the clasp body.

3. The automatically convertible and reusable seatbelt device according to claim 2, characterized in that, An internal locking slot is provided on the outer side of the safety clasp body (101) and at one end of the safety clasp slide groove (104). An internal locking plate (106) is provided in the internal locking slot. The internal locking plate (106) is rotatably connected to the safety clasp body (101) by a rivet and is provided with a locking plate spring (107). The locking plate spring (107) is used to support the internal locking plate (106) to reset. When the internal locking plate (106) is in the reset state, it engages with the safety clasp body (101).

4. The automatically convertible and reusable seatbelt device according to claim 3, characterized in that, The width of both the retainer body (301) and the safety clasp body (101) gradually narrows from the middle to the ends, and the ends of both the retainer body (301) and the safety clasp body (101) are pointed.

5. The automatically convertible and reusable seatbelt device according to claim 4, characterized in that, The steel strand (2) is arranged in a ring shape, and the ends of the steel strand (2) are provided with steel strand connectors (4) for connecting the ends of the steel strand (2).

6. The automatically convertible and reusable seatbelt device according to claim 5, characterized in that, The steel strand connector (4) includes a meshing sleeve (401), a threaded tube (402), and a screw (403). The two meshing sleeves (401) are respectively disposed at both ends of the steel strand (2) and mesh with the steel strand (2). The threaded tube (402) and the screw (403) are respectively connected to the ends of the two meshing sleeves (401) away from the steel strand (2), and the threaded tube (402) and the screw (403) are adapted to each other.

7. The automatically convertible and reusable seatbelt device according to claim 6, characterized in that, The threaded tube (402) is rotatably connected to the engagement sleeve (401) located at one end of the steel strand (2), and the screw (403) is fixedly connected to the engagement sleeve (401) at the other end.

8. The automatically convertible and reusable seatbelt device according to claim 7, characterized in that, The fixed building is a concrete building (5), the fixing connector (302) is a fixing plate, the fixing plate has bolt holes (303), and the fixing plate is connected to the outer wall of the concrete building (5) by expansion bolts (304).

9. The automatically convertible and reusable seatbelt device according to claim 7, characterized in that, The fixed structure is scaffolding (6), the fixing connector (302) is a U-shaped clip, and the fixing device (3) is connected to the scaffolding (6) through the U-shaped clip.

10. The method of using the automatically convertible and reusable seat belt device according to claim 8 or 9, characterized in that, Includes the following steps: S1. Preparation: Prepare a steel strand (2) that meets the perimeter of the working range. Thread the main body (301) of several fasteners (3) onto the steel strand (2) and make the spacing between the fasteners (3) less than or equal to 5m. According to the usage requirements, thread the safety shackle body (101) of one or more safety belt shackles (1) onto the steel strand (2). Install the engagement sleeve (401) with threaded tube (402) and screw (403) at both ends of the steel strand (2). S2. Fixing: Start fixing from one end of the steel strand (2), pass the expansion bolt (304) through the fixing plate and fix it to the concrete building (5) wall or fix the U-shaped clip to the scaffold (6), and fix a fixing device (3) on both sides of the corner of the steel strand (2), with the distance between adjacent fixing devices less than or equal to 5m. After the fixing device (3) is installed, screw (403) into the threaded pipe (402) and tighten it. S3. Operation: The operation can be carried out by attaching the human safety belt buckle to the safety belt shackle (102) of the safety belt shackle (1), pulling the safety rope (7) on the human safety belt, pulling the safety shackle body (101) along the steel strand (2) to slide and rotate through other safety belt shackles (1) and fixing devices (3), and then moving the operation position.

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