Anti-falling device capable of being automatically locked

Abstract

The utility model discloses an anti-falling device capable of automatically locking, which relates to the technical field of anti-falling and comprises a hook body, the hook body comprises a handheld handle, an arc-shaped transmission arm extending from one end of the handheld handle and a hook head section extending from one end, far away from the handheld handle, of the transmission arm, and the handheld handle, the transmission arm and the hook head section are matched to form a hook-shaped structure. A sliding groove is dug in the transmission arm in the extending direction, the sliding groove is of an opening structure on the side face of the hook body, a transmission assembly and a locking assembly abutting against one side of the transmission assembly are arranged in the transmission arm, a contact part of the transmission assembly is located on the inner side of the connecting portion of the hook head section and the transmission arm, and one end of the contact part extends out of the hook body. The device has the effect of improving the safety during high-altitude operation.

Description

Technical Field

[0001] The present application relates to the field of anti-fall technology, and in particular to an anti-fall device that can be automatically locked. Background Art

[0002] When performing tasks such as power transmission line maintenance, power tower operation and maintenance, or climbing work, a safety hook kit is required to prevent workers from falling suddenly. However, the existing safety hook kit is inconvenient to use, and requires workers at height to first insert the safety hook through the foot nails (such as the safety hook) from the side when climbing. Figure 8 As shown), the safety hook is hung on the foot nail, and then the foot nail is held to climb up. In this method, the safety hook can only be inserted into the foot nail from the side, which is relatively inconsistent with the climbing habits of the human body and increases the risk factor of high-altitude operations. Therefore, this application proposes a new technical solution. Utility Model Content

[0003] In order to improve the safety of high-altitude operations, the present application provides an automatically locking anti-fall device.

[0004] The present application provides an automatically lockable anti-fall device, which adopts the following technical solutions:

[0005] An automatically lockable anti-fall device comprises a hook body, the hook body comprising a hand-held handle, an arc-shaped transmission arm extending from one end of the hand-held handle, and a hook head section extending from an end of the transmission arm away from the hand-held handle, wherein the hand-held handle, the transmission arm, and the hook head section cooperate to form a hook-shaped structure;

[0006] A slide groove is dug in the transmission arm along the extension direction, and the slide groove is an open structure on the side of the hook body. A transmission assembly is provided in the transmission arm, and the contact component of the transmission assembly is located on the inner side of the connection between the hook head section and the transmission arm, and one end extends out of the hook body;

[0007] A locking assembly is movably connected at the junction of the transmission arm and the hand-held handle, and the locking assembly includes a slider, a locking plate, and a first return spring. The slider is slidably connected to the slide slot and partially extends out of the slide slot. One end of the locking plate is rotatably connected to the hand-held handle, and the other end is used to cooperate with the portion of the slider extending out of the slide slot to lock. The first return spring is located in the slide slot and is used to reset the transmission assembly.

[0008] The free end of the hook head section is bent toward the hand-held handle and forms a limit when the locking plate is unlocked.

[0009] Optionally, the transmission assembly includes a movable block, a pushing block and a plurality of ball bearings, the movable block being a contact component of the transmission assembly, a movable groove for the movable block to rotate is dug inside the transmission arm, and a slot connected to the movable groove is opened on the inner side of the bend of the transmission arm, one end of the movable block extends out of the slot, the movable block is rotatably connected to the movable groove, and the end located in the movable groove abuts the pushing block, and the ends of the movable block abutting against the pushing block are both arc-shaped structures, the pushing block is slidably connected to the slide groove, and the end away from the movable block abuts against the ball bearings, the ball bearings are slidably connected in the slide groove and arranged along the slide groove, the ball bearings away from the pushing block abut against the slider, and the other end of the slider is connected to the first return spring, and the end of the first return spring away from the slider is connected to the slide groove.

[0010] Optionally, one end of the slider extending from the hook body is bent upward toward the hook head section and has a first limit block, the movable end of the locking plate is bent toward the handle and has a second limit block that cooperates with the first limit block to lock, the movable end of the locking plate extends toward the hook head section and has a semicircular protrusion, and the curvature of the bending of the hook head section matches the curvature of the protrusion.

[0011] Optionally, the hand-held handle is provided with a rotating assembly, which includes a rotating shaft and a guide shaft. The hand-held handle is provided with an arc groove, the guide shaft is slidably connected to the arc groove and both ends extend out of the arc groove, the rotating shaft is installed on the inner side of the arc groove and the rotating shaft passes through the locking plate and the hand-held handle, the locking plate rotates around the rotating shaft, and the arc groove is opened along the arc of rotation of the end of the locking plate.

[0012] Optionally, the guide shaft is extended with a protrusion, and the protrusion extends out of the arc groove and is located inside the hand handle. A second return spring is installed in the arc groove, and one end of the second return spring is connected to the inner wall of the hand handle, and the other end is connected to the protrusion of the guide shaft.

[0013] Optionally, a connecting rod assembly is provided on the side wall of the hook body facing away from the slider and a groove is opened for the movement of the connecting rod assembly, and the groove coincides with the rotation trajectory of the connecting rod assembly. The connecting rod assembly includes a first connecting rod and a second connecting rod, the first connecting rod is rotatably connected to the second connecting rod, the other end of the second connecting rod is rotatably connected to the groove, and the end of the first connecting rod away from the second connecting rod is rotatably connected to one end of the locking plate.

[0014] Optionally, both side walls of the hand-held handle are provided with a rotation groove for cooperating with the rotating end of the locking plate, the hand-held handle is connected to the rotation groove, the end of the hand-held handle is set as an arc structure, and the end of the hand-held handle abuts against the rotation groove.

[0015] Optionally, a hand hook is provided at one end of the transmission arm close to the hand handle, the hand hook is fixedly connected to the transmission arm, extends toward or away from the side wall where the slider is provided, and bends toward the side away from the hook body.

[0016] Optionally, an arc-shaped hand hook is provided at one end of the transmission arm close to the hand handle, the arc opening of the hand hook is close to the hand handle and the part of the hand hook away from the hook body is inclined toward the side of the hook body.

[0017] Optionally, anti-slip pads are provided on the inner sides of the transmission arm and the hook head section.

[0018] Optionally, the hand-held handle is provided with a buffer assembly, which includes a steel wire rope and a folding belt. The steel wire rope is connected to the slider, and one end of the folding belt is fixed to the hand-held handle. A section of the folding belt away from the hand-held handle is overlapped and sewn and bonded to form an overlapping portion. After the overlapping portion is unfolded, a section away from the hand-held handle is used to fix with the steel wire rope.

[0019] To sum up, the present application includes the following beneficial technical effects: when the hook body is in the initial state, the slider is engaged with the locking plate, and the hook body is in an open state. When climbing is required, the hook body is hung on the foot nail from the front. When the hook body bears weight, the contact component of the transmission assembly will be displaced, causing the transmission assembly to push the locking assembly, and the slider of the locking assembly will slide down. The slider and the locking plate are no longer engaged, and the hook body can be closed by limiting the end of the hook head section, thereby forming a lock. There is no need for high-altitude workers to insert the safety hook into the foot nail from the side, which increases safety during high-altitude operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of this application;

[0021] Figure 2 It is a structural diagram of the transmission assembly in this application;

[0022] Figure 3 is a schematic cross-sectional view of the present application;

[0023] Figure 4 is a schematic structural diagram of the connecting rod assembly in this application;

[0024] Figure 5 It is a structural diagram of the buffer component of the present application;

[0025] Figure 6 This is a schematic structural diagram of the second embodiment of the present application;

[0026] Figure 7 This is a schematic structural diagram of Example 3 of the present application;

[0027] Figure 8 This is a diagram of the foot pegs.

[0028] Explanation of the accompanying drawings: 1. Hook body; 11. Connecting shaft; 12. Hook head section; 13. Transmission arm; 131. Movable groove; 132. Slide groove; 14. Handle; 15. Anti-slip pad; 16. Transmission assembly; 161. Movable block; 162. Push block; 163. Ball; 17. Locking assembly; 171. Slider; 172. Locking plate; 173. First limit block; 174. Second limit block; 175. First return spring; 18. Rotating assembly; 181. Guide shaft; 182. Arc groove; 183. Second return spring; 184. Rotating shaft; 19. Connecting rod assembly; 191. First connecting rod; 192. Second connecting rod; 2. Hand hook; 3. Buffer assembly; 31. Wire rope; 32. Folding belt. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-8 This application is described in further detail.

[0030] The embodiment of the present application discloses an automatically lockable anti-fall device.

[0031] Reference Figure 1 The automatically locking anti-fall device includes a hook body 1. The hook body 1 can be made of aviation-grade aluminum alloy material, which can reduce the weight of the hook body 1 while maintaining its strength. The hook body 1 includes a hand-held handle 14, an arc-shaped transmission arm 13 extending from one end of the hand-held handle 14, and a hook head section 12 extending from the end of the transmission arm 13 away from the hand-held handle 14. The hand-held handle 14, the transmission arm 13 and the hook head section 12 cooperate to form a hook-shaped structure. The tail end of the hand-held handle 14 can rotate the connecting shaft 11. The connecting shaft 11 is used to be fixed to one end of the safety rope and is wrapped with the safety rope. It can be buckled around the waist of the user, that is, the maintenance staff of the power tower, etc. through the safety buckle at the other end to play a safety protection role.

[0032] The transmission arm 13 and the hook head section 12 are both provided with anti-skid pads 15 on their inner sides. The anti-skid pads 15 can be made of anti-skid cowhide material. The provision of the anti-skid pads 15 can effectively reduce the probability of the hook body 1 falling off due to being too smooth.

[0033] Reference Figure 1 and Figure 2The transmission arm 13 has a movable groove 131 and a sliding groove 132 extending along the arc of the transmission arm 13. A notch is provided on the inner side of the connection between the transmission arm 13 and the hook head section 12, and the movable groove 131 is connected to the notch. A transmission assembly 16 is provided on the inner side of the transmission arm 13. The transmission assembly 16 includes a movable block 161, a push block 162, and a plurality of balls 163. The movable block 161 is rotatably connected to the transmission arm 13 via an axis, and one end extends out of the notch. The movable block 161 abuts the push block 162, and the abutting side walls are each configured as an arc. The movable groove 131 is larger than the movable block 161. The push block 162 abuts the balls 163 and pushes them to move along the sliding groove 132.

[0034] When the movable block 161 is subjected to force, the movable block 161 rotates toward the inside of the transmission arm 13, driving the other end of the movable block 161 to push the pushing block 162 to move, and the movable block 161 and the pushing block 162 are both set to be arc-shaped, which makes it more convenient for the movable block 161 to push the pushing block 162 to move, and can reduce the extrusion and collision between the two components, reducing the possibility of wear and damage to the parts.

[0035] Reference Figure 1 and Figure 2 A locking assembly 17 is provided on one side of the ball bearing 163. The locking assembly 17 includes a slider 171, a first return spring 175, and a locking plate 172 rotatably connected to the handle 14. One end of the slider 171 abuts the ball bearing 163, and the other end is connected to the first return spring 175. The end of the first return spring 175, which is away from the slider 171, is connected to the inner wall of the slide groove 132. The provision of the first return spring 175 ensures that the slider 171 remains in contact with the ball bearing 163 when not sliding under force. The locking plate 172 has a thinner movable end and a thicker movable end. This configuration effectively prevents the locking plate 172 from breaking due to the heavy weight of the movable end due to continuous rotation.

[0036] Reference Figure 1 and Figure 2 One end of the slider 171 slides in the slide groove 132 and the other end extends out of the slide groove 132. The part of the slider 171 extending out of the slide groove 132 is directed toward the hook head section 12 and bent upward with a first limit block 173. The end of the locking plate 172 is bent toward the hand handle 14 and has a second limit block 174 that cooperates with the first limit block 173 to lock. When the hook body 1 is in the unclosed state, the first limit block 173 is locked with the second limit block 174. When the movable block 161 is subjected to force, the pushing block 162 and the ball 163 push the slider 171 toward the hand handle 14. The slider 171 moves downward and compresses the first return spring 175, so that the locking plate 172 is disengaged from the lock of the slider 171. After the hook body 1 is closed, the first return spring 175 returns to the uncompressed state, pushing the slider 171 back to its initial position.

[0037] Reference Figure 1 and Figure 2 One end of the hook head section 12 is bent upward, and a semicircular protrusion extends outward from the end of the locking plate 172 on the side away from the bent portion. The curvature of the bend of the hook head section 12 matches the curvature of the protrusion. When the locking plate 172 is released from the lock of the slider 171, the locking plate 172 rotates to the bend of the hook head section 12 and engages the protrusion at the bend, thereby limiting it and closing the hook body 1 to achieve automatic locking.

[0038] Reference Figure 2 and Figure 3 A rotating assembly 18 is provided on the hand handle 14, and the rotating assembly 18 includes a guide shaft 181 and a rotating shaft 184. The hand handle 14 is provided with an arc groove 182, and the guide shaft 181 is slidably connected in the arc groove 182 and the two ends of the guide shaft 181 extend out of the arc groove 182, and the end of the locking plate 172 is rotatably connected to the guide shaft 181, and the rotating shaft 184 is installed on the side of the arc groove 182, and the rotating shaft 184 passes through the hand handle 14 and the locking plate 172, and the locking plate 172 rotates around the rotating shaft 184. The arc opened by the arc groove 182 is equivalent to the arc of rotation of the locking plate 172, and the guide shaft 181 passes through the end of the locking plate 172 to guide the locking plate 172 to rotate along the arc without deviation.

[0039] Reference Figure 2 and Figure 3 A second return spring 183 is installed in the hand-held handle 14, and a protrusion is extended from the part of the guide shaft 181 extending out of the arc groove 182. One end of the second return spring 183 is connected to the protrusion, and the other end is connected to the inner wall of the hand-held handle 14. When the hook body 1 is closed, the second return spring 183 is in a natural state. When the hook body 1 is in an unclosed state, the second return spring 183 is in a compressed state. When the locking plate 172 is out of the lock of the slider 171, it can push the locking plate 172 to pop out instantly to complete the closure.

[0040] Reference Figure 2 and Figure 4 The side wall of the hook body 1 facing away from the slider 171 is provided with a rotation groove for the locking plate 172 to rotate. The end of the locking plate 172 is arc-shaped, and the arc of the rotation groove is equal to the arc direction when the end of the locking plate 172 rotates. This arrangement can make the rotation of the locking plate 172 smoother.

[0041] Reference Figure 2 and Figure 4The hook body 1 is provided with a connecting rod assembly 19, and the connecting rod assembly 19 is also located on the side wall of the hook body 1 away from the slider 171. The connecting rod assembly 19 includes a first connecting rod 191 rotatably connected to one end of the locking plate 172 and a second connecting rod 192 rotatably connected to the hook body 1. The first connecting rod 191 and the second connecting rod 192 are rotatably connected. The hook body 1 is provided with a groove for the second connecting rod 192 to rotate and for the first connecting rod 191 and the second connecting rod 192 to be inserted.

[0042] When the locking plate 172 needs to be rotated, the first connecting rod 191 and the second connecting rod 192 can drive the locking plate 172 to move along the arc groove 182. When the locking plate 172 needs to be locked with the slider 171, the other end of the locking plate 172 moves downward along the arc groove 182, thereby facilitating the second limit block 174 of the locking plate 172 to be clamped on the slider 171.

[0043] Reference Figure 1 and Figure 5 A buffer assembly 3 is mounted on the handle 14. The buffer assembly 3 includes a steel wire rope 31 and a folding strap 32. One end of the steel wire rope 31 is fixed to the slider 171. One end of the folding strap 32 is wrapped around the connecting shaft 11, overlapped, and firmly fixed (sewing and nail plate clamping are added) below the handle 14. The other end is fixed to the safety rope. A section of the folding strap 32 away from the handle 14 is overlapped, sewn (relatively poor sewing quality) and bonded to form an overlapping portion. After the overlapping portion is unfolded, the section away from the handle 14 is used to fix to the steel wire rope 31. When a fall occurs accidentally, the acceleration during the fall generates gravity, which will unfold the folding strap 32 and extend it to 5-10 cm. Since the steel wire rope 31 is sewn to the folding strap 32, it will pull the steel wire rope 31 downward, thereby dragging the slider 171. The slider 171 moves downward, and the locking plate 172 loses its limit and instantly pops out to complete the closure, forming a second level of automatic fall prevention.

[0044] Reference Figure 1 A hand hook 2 is fixed to one side of the hand handle 14, and the hand hook 2 extends toward or away from the side where the slider 171 is provided and bends in the direction away from the hand handle 14. The provision of the hand hook 2 makes it more convenient for aerial workers to use their fingers to assist in hooking the device when using the device, thereby increasing convenience and comfort during use.

[0045] This application also includes another embodiment:

[0046] Reference Figure 6 The end of the transmission arm 13 near the handle 14 is fixed with an arc-shaped hand hook 2 on the outside. The arc of the hand hook 2 is close to the handle 14 and the part of the hand hook 2 away from the hook body 1 is inclined to the side of the hook body 1. This style of hand hook 2 can be used to hold the thumb when holding the handle 14, which increases the comfort of use.

[0047] This application also includes another embodiment:

[0048] Reference Figure 7 There are two hand hooks 2. One of the hand hooks 2 extends toward or away from the side where the slider 171 is located and bends away from the handle 14. The other hand hook 2 is curved, with the arc of the hand hook 2 proximal to the handle 14 and the portion of the hand hook 2 away from the hook body 1 tilted toward the side of the hook body 1. The two hand hooks 2 are one at the top and one at the bottom. This arrangement makes the hook body 1 more difficult to fall off.

[0049] Implementation principle:

[0050] In the initial state, the slider 171 is locked with the locking plate 172, and the hook body 1 is in the open state. The hook body 1 is hung on the foot nail, the hand handle 14 is grasped and the thumb is inserted into the hand hook 2. By applying pressure to the movable block 161, the movable block 161 rotates and pushes the abutting pushing block 162 to slide, and the force is transmitted to the ball 163. The ball 163 slides in the slide groove 132, thereby pushing the slider 171 to move downward, and the locking plate 172 is loosened and rotated to the hook head section 12. The protrusion on the locking plate 172 is engaged with the bending part of the hook head section 12, completing the closure of the hook body 1, and continuing to climb upward.

[0051] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An automatically locking anti-fall device, characterized in that: The hook body (1) comprises a hand-held handle (14), an arc-shaped transmission arm (13) extending from one end of the hand-held handle (14), and a hook head section (12) extending from one end of the transmission arm (13) away from the hand-held handle (14); the hand-held handle (14), the transmission arm (13), and the hook head section (12) cooperate to form a hook-shaped structure; A slide groove (132) is excavated in the transmission arm (13) along the extension direction, and the slide groove (132) is an open structure on the side of the hook body (1). A transmission assembly (16) is provided in the transmission arm (13), and a contact component of the transmission assembly (16) is located on the inner side of the connection between the hook head section (12) and the transmission arm (13), and one end extends out of the hook body (1); The transmission arm (13) and the hand-held handle (14) are movably connected to a locking assembly (17), the locking assembly (17) comprising a slider (171), a locking plate (172) and a first return spring (175), the slider (171) being slidably connected to the slide groove (132) and partially extending out of the slide groove (132), one end of the locking plate (172) being rotatably connected to the hand-held handle (14), and the other end being used to cooperate with the portion of the slider (171) extending out of the slide groove (132) for locking, the first return spring (175) being located in the slide groove (132) and being used to reset the transmission assembly (16); The free end of the hook head section (12) is bent toward one side of the hand-held handle (14) and forms a limit when the locking plate (172) is not locked.

2. The automatically lockable anti-fall device according to claim 1, characterized in that: The transmission assembly (16) includes a movable block (161), a pushing block (162) and a plurality of balls (163); The movable block (161) is a contact component of the transmission assembly (16); a movable groove (131) for the movable block (161) to rotate is dug inside the transmission arm (13); and a notch communicating with the movable groove (131) is opened on the inner side of the transmission arm (13) toward the bend, and one end of the movable block (161) extends out of the notch; The movable block (161) is rotatably connected to the movable groove (131), and one end located in the movable groove (131) abuts against the pushing block (162); The ends of the movable block (161) and the pushing block (162) that are in contact with each other are both arc-shaped structures. The pushing block (162) is slidably connected to the slide groove (132), and the end away from the movable block (161) is in contact with the ball (163). The ball (163) is slidably connected in the slide groove (132) and arranged along the slide groove (132). The ball (163) away from the pushing block (162) is in contact with the slider (171). The other end of the slider (171) is connected to the first return spring (175). The end of the first return spring (175) away from the slider (171) is connected to the slide groove (132).

3. The automatically lockable anti-fall device according to claim 1, characterized in that: One end of the hook body (1) of the slider (171) is bent upwardly toward the hook head section (12) to form a first limit block (173); the movable end of the locking plate (172) is bent toward the hand handle (14) to form a second limit block (174) that cooperates with the first limit block (173) to lock; the movable end of the locking plate (172) is extended toward the hook head section (12) to form a semicircular protrusion; the curvature of the curvature of the hook head section (12) matches the curvature of the protrusion.

4. The automatically lockable anti-fall device according to claim 3, characterized in that: The hand-held handle (14) is provided with a rotating assembly (18), and the rotating assembly (18) includes a rotating shaft (184) and a guide shaft (181). The hand-held handle (14) is provided with an arc groove (182). The guide shaft (181) is slidably connected to the arc groove (182) and has both ends extending out of the arc groove (182). The rotating shaft (184) is installed on the inner side of the arc groove (182) and the rotating shaft (184) passes through the locking plate (172) and the hand-held handle (14). The locking plate (172) rotates around the rotating shaft (184), and the arc groove (182) is opened along the arc line of rotation of the end of the locking plate (172).

5. The automatically lockable anti-fall device according to claim 4, characterized in that: The guide shaft (181) is extended with a protrusion, and the protrusion extends out of the arc groove (182) and is located inside the hand handle (14). A second return spring (183) is installed in the arc groove (182). One end of the second return spring (183) is connected to the inner wall of the hand handle (14), and the other end is connected to the protrusion of the guide shaft (181).

6. The automatically lockable anti-fall device according to claim 5, characterized in that: The hook body (1) is provided with a connecting rod assembly (19) on a side wall away from the slider (171) and is provided with a groove for the connecting rod assembly (19) to move, the groove being consistent with the rotation trajectory of the connecting rod assembly (19), the connecting rod assembly (19) comprising a first connecting rod (191) and a second connecting rod (192), the first connecting rod (191) and the second connecting rod (192) being rotationally connected, the other end of the second connecting rod (192) being rotationally connected to the groove, and the end of the first connecting rod (191) away from the second connecting rod (192) being rotationally connected to one end of the locking plate (172); Both side walls of the hand-held handle (14) are provided with a rotation groove for cooperating with the rotation end of the locking plate (172), the hand-held handle (14) is connected to the rotation groove, the end of the hand-held handle (14) is arranged as an arc structure, and the end of the hand-held handle (14) abuts against the rotation groove.

7. The automatically lockable fall prevention device according to claim 1, characterized in that: A hand hook (2) is provided at one end of the transmission arm (13) close to the hand handle (14); the hand hook (2) is fixedly connected to the transmission arm (13), extends toward or away from the side wall where the slider (171) is provided, and is bent toward the side away from the hook body (1).

8. The automatically lockable fall prevention device according to claim 1, characterized in that: An arc-shaped hand hook (2) is provided at one end of the transmission arm (13) close to the hand handle (14); the arc opening of the hand hook (2) is close to the hand handle (14), and the portion of the hand hook (2) away from the hook body (1) is inclined toward the side of the hook body (1).

9. The automatically lockable fall prevention device according to claim 1, characterized in that: Anti-slip pads (15) are provided on the inner sides of the transmission arm (13) and the hook head section (12).

10. The automatically lockable fall prevention device according to claim 1, characterized in that: The hand-held handle (14) is provided with a buffer assembly (3), and the buffer assembly (3) includes a steel wire rope (31) and a folding belt (32). The steel wire rope (31) is connected to the slider (171), and one end of the folding belt (32) is fixed to the hand-held handle (14). A section of the folding belt (32) away from the hand-held handle (14) is overlapped and sewn and bonded to form an overlapped portion. After the overlapped portion is unfolded, a section away from the hand-held handle (14) is used to be fixed to the steel wire rope (31).

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