Safety lock for high-altitude operation

Abstract

The safety lock comprises a body, a sleeve is fixed on one side of the body, a notch is formed in one end of the body, concentric sliding holes are formed in the two sides of the upper portion of the body, concentric channels are formed in the two sides of the upper portion in the body, the channels are communicated with the sliding holes in the corresponding sides, and openings in the lower ends of the channels are located in the top wall of the notch. A lock hole matched with the channel is formed in the bottom wall of the notch, and the lock hole and the channel are located on the same circumference; the centers of the two sides of the body are rotationally connected with first rotating shafts respectively, rotating plates are fixedly connected to the first rotating shafts, the upper portions of the sides, facing the body, of the rotating plates are fixedly connected with sliding rods, the sliding rods are slidably arranged in the corresponding sliding holes, the inner ends of the sliding rods are connected with locking rods, and the locking rods are movably arranged in the channels. The two sets of lock rods are arranged on the two sides of the body, the two sets of lock rods are hung on the safety belt, when one set of lock rods are damaged, the other set of lock rods still play a role, and the danger coefficient is reduced.

Description

Technical Field

[0001] This utility model relates to the field of safety lock technology, specifically a safety lock for high-altitude operations. Background Technology

[0002] Working at heights is an extremely dangerous job. When working at heights, it is necessary to wear a safety belt with a safety lock attached to it, which is then connected to the rope to ensure the worker's safety.

[0003] Traditional safety locks mostly have the following problems: (1) They only have one buckle, that is, they are connected to the installation belt through one buckle. If the buckle is accidentally opened, the safety lock will be separated from the safety belt, which will cause danger; (2) The rope and the safety lock are only locked by one set of locking mechanisms. If the locking mechanism is damaged, the safety lock will easily slip off the rope, which will cause danger. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, this utility model provides a high-altitude work safety lock to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A safety lock for working at height includes a circular body with a through-tube fixed to one side. A notch is located at the end of the body away from the tube. Concentric sliding holes are located on both sides of the upper part of the body. Concentric channels are located on both sides of the upper part of the body, communicating with the sliding holes on their respective sides. The opening at the lower end of each channel is located on the top wall of the notch. A locking hole matching the channel is located on the bottom wall of the notch, and the locking hole and the channel are on the same circumference. A first rotating shaft is rotatably connected to the center of each side of the body via a rotating bearing. A rotating plate is fixedly connected to the first rotating shaft. A sliding rod is fixedly connected to the upper part of the rotating plate facing the body, and the sliding rod is slidably mounted on the corresponding shaft. Within the corresponding sliding hole, the inner end of the sliding rod is connected to a locking rod that matches the channel. The locking rod is movably positioned within the corresponding channel. The centers of the sliding hole, channel, locking rod, and locking hole are all located on the extension line of the first rotating shaft axis. A groove is provided on the side of the sleeve away from the main body. A connecting slide is provided within the main body and the sleeve. The slide and the groove are positioned opposite each other. A cavity communicating with the slide is provided within the main body. A pressure rod is slidably positioned within the slide. A gear is connected to the end of the pressure rod away from the sleeve. A second rotating shaft is provided within the cavity and rotatably connected to the main body. A gear is fixedly connected to the inner end of the second rotating shaft. The gear meshes with the gear. The outer end of the second rotating shaft extends out from one side of the main body.

[0007] Preferably, the upper part of the rotating plate away from the main body is provided with a first screw hole, which is located inside the circumference of the sliding hole. A positioning screw is threaded into the first screw hole. A second screw hole is provided near the notch on the main body. The projections of the second screw hole and the first screw hole on the main body are on the same circumference. When the first screw hole and the second screw hole are aligned, the positioning screw can be screwed into the second screw hole.

[0008] With the above technical solution, when the rotating plate rotates, it will drive the sliding rod to slide in the sliding hole, and at the same time the locking rod will slide in the channel until the locking rod is inserted into the lock hole. When the locking rod contacts the bottom of the lock hole, the first screw hole and the second screw hole are exactly aligned. At this time, tightening the positioning screw will connect the positioning screw to the second screw hole, thereby keeping the rotating plate stable and preventing it from rotating, thus preventing the locking rod from slipping out of the lock hole.

[0009] Preferably, the outer end of the first rotating shaft is connected to a first handle, and the outer end of the second rotating shaft is connected to a second handle.

[0010] The above technical solution allows for convenient rotation of the first shaft via the first handle and convenient rotation of the second shaft via the second handle.

[0011] Preferably, the end face of the pressure rod facing the groove is provided with serrated patterns.

[0012] The above technical solution uses a pressure bar to press the rope into the groove. The serrated pattern increases friction and prevents slippage between the pressure bar and the rope, thus preventing the sleeve from sliding on the rope.

[0013] Preferably, a cover plate is fastened to the cavity of the main body by a snap fastener, and the cover plate has a round hole, in which the second rotating shaft is movably disposed.

[0014] The above technical solution allows for the maintenance of gears and racks inside the cavity by opening the cover plate.

[0015] Preferably, the upper end of the sleeve is connected to a positioning plate, and the positioning plate has multiple staggered slots on both sides.

[0016] With the above technical solution, the sleeve is fitted onto the rope. When the sleeve needs to be fixed, the rope at the top of the sleeve is wound around the positioning plate and alternately locked in the slots to prevent the sleeve from slipping on the rope.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) By setting two sets of locking rods on both sides of the main body and hanging them on the safety belt, when one set of locking rods is damaged, the other set of locking rods will still work, thus reducing the risk factor.

[0019] (2) When the sleeve slides on the rope, the second shaft is rotated to drive the gear to rotate. Through the cooperation of the gear and the rack, the pressure rod is driven to move towards the sleeve until the pressure rod presses the rope into the groove of the sleeve, thereby preventing the sleeve from sliding on the rope and improving safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention;

[0021] Figure 2 for Figure 1 The left view;

[0022] Figure 3 This is a cross-sectional view of the present invention;

[0023] Figure 4 This is a schematic diagram showing the lock bar inserted into the keyhole.

[0024] In the diagram: 1-body, 2-sleeve, 3-notch, 4-sliding hole, 5-channel, 6-locking hole, 7-first rotating shaft, 8-rotating plate, 9-sliding rod, 10-locking rod, 11-groove, 12-sliding track, 13-cavity, 14-pressure rod, 15-tooth rod, 16-second rotating shaft, 17-gear, 18-positioning screw, 19-second screw hole, 20-first handle, 21-second handle, 22-cover plate, 23-positioning plate, 24-slot. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figure 1 and Figure 4A safety lock for working at height includes a circular body 1. A sleeve 2, extending vertically, is fixed to one side of the body 1 and is fitted onto a rope. A notch 3 is provided at the end of the body 1 furthest from the sleeve, for attaching to a mounting strap. Concentric sliding holes 4, with the same radius, are provided on both sides of the upper part of the body 1. Concentric channels 5 are provided on both sides of the upper part of the body 1, communicating with the sliding holes 4 on their respective sides. The opening at the lower end of each channel 5 is located on the top wall of the notch 3. A locking hole 6, matching the channel 5, is provided on the bottom wall of the notch 3, and the locking hole 6 and the channel 4 are on the same circumference. First rotating shafts 7 are rotatably connected to the centers of both sides of the body 1 via rotary bearings. A rotating plate 8 is fixedly connected to the upper part of the rotating plate 8 facing the main body. A sliding rod 9 is fixedly connected to the upper part of the rotating plate 8. The sliding rod 9 is slidably disposed in the corresponding sliding hole 4. The inner end of the sliding rod 9 is connected to a locking rod 10 that matches the channel. The locking rod 10 is movably disposed in the corresponding channel 5. The centers of the sliding hole 4, the channel 5, the locking rod 10, and the locking hole 6 are all located on the extension line of the axis of the first rotating shaft 7. The outer end of the first rotating shaft 7 is connected to a first handle 20. Turning the first handle 20 can drive the first rotating shaft 7 to rotate. The first rotating shaft 7 drives the sliding rod 9 to rotate in the sliding hole 4, thereby driving the locking rod 10 to rotate in the channel 5 until the locking rod 10 rotates out of the channel 5 and is inserted into the locking hole 6, thereby completing the closure of the notch 3.

[0028] Locking rods 10 are installed on both sides of the main body 1. The two sets of locking rods 10 are hung on the safety belt. When one set of locking rods 10 is damaged, the other set of locking rods 10 will still work, reducing the risk factor.

[0029] The rotating plate 8 has a first screw hole on its upper part away from the main body. The first screw hole is located inside the circumference of the sliding hole 4. A positioning screw 18 is threaded into the first screw hole. The main body 1 has a second screw hole 19 near the notch 3. The projections of the second screw hole 19 and the first screw hole on the main body are on the same circumference. When the first screw hole and the second screw hole 19 are aligned, the positioning screw 18 can be screwed into the second screw hole 19. The position of the second screw hole 19 can be determined according to the position of the positioning screw 18 after the locking rod 10 abuts against the bottom of the locking hole 6. When the locking rod 10 is inserted into the locking hole 6 and abuts against the bottom of the locking hole, the first screw hole and the second screw hole 19 can be aligned. After alignment, the positioning screw 18 is screwed into the second screw hole 19, thereby fixing the rotating plate 8 and preventing the locking rod 10 from sliding out of the locking hole 6.

[0030] The upper end of the sleeve 2 is connected to a positioning plate 23. The positioning plate 23 has multiple staggered slots 24 on both sides. The sleeve 2 is sleeved on the rope. When the sleeve 2 needs to be fixed, the rope at the upper part of the sleeve 2 is wound along the positioning plate 23 and alternately locked in the slots 24, so that the sleeve 2 can be fixed on the rope. The sleeve 2 has a groove 11 on the side away from the main body. The main body 1 and the sleeve 2 have a connecting slide 12. The slide 12 is opposite to the groove 11. The main body 1 has a cavity 13 that communicates with the slide. A pressure rod 14 is slidably arranged in the slide 12. The end face of the pressure rod 14 facing the groove 11 has a serrated pattern. The end of the pressure rod 14 away from the sleeve is connected to a toothed rod 15. The cavity 13 has a second rotating shaft 16 that is rotatably connected to the main body 1. The inner end of the second rotating shaft 16 is fixedly connected to a gear 17. The gear 17 meshes with the toothed rod 15. The outer end of the second rotating shaft 16 passes through one side of the main body 1 and is connected to a second handle 21. When the sleeve 2 slides down the rope due to an accident, the second shaft 16 is rotated, which drives the gear 17 to rotate. Through the cooperation between the gear 17 and the rack 15, the pressure rod 14 is driven to move towards the sleeve 2 until the pressure rod 14 presses the rope into the groove 11 of the sleeve 2. In addition, the end face of the pressure rod 14 is serrated, which increases the friction between it and the rope, thereby preventing the sleeve 2 from sliding on the rope and improving safety.

[0031] The usage method of this embodiment is as follows:

[0032] The safety belt is worn on the body, the sleeve 2 is fitted onto the steel rope, and the steel rope is alternately wound around the slot 24 of the positioning plate 23 to fix the sleeve 2. The notch 3 of the body 1 is hung on the safety belt. By rotating the first rotating shaft 7, the sliding rod 9 is driven to rotate in the sliding hole 4, thereby driving the locking rod 10 to rotate in the channel 5 until the locking rod 10 rotates out of the channel 5 and inserts into the locking hole 6, thereby completing the closure of the notch 3 and locking the safety belt.

[0033] By installing locking rods 10 on both sides of the main body 1, if one set of locking rods 10 is damaged, the other set of locking rods 10 will still function, thus reducing the risk factor.

[0034] If the sleeve 2 slides down the rope due to an accident, the second shaft 16 is rotated, which drives the gear 17 to rotate. Through the cooperation between the gear 17 and the rack 15, the pressure rod 14 is driven to move towards the sleeve 2 until the pressure rod 14 presses the rope into the groove 11 of the sleeve 2. In addition, the end face of the pressure rod 14 is serrated, which increases the friction between it and the rope, thereby preventing the sleeve 2 from sliding on the rope and improving safety.

[0035] Example 2

[0036] Based on Embodiment 1, a cover plate 22 is fastened to the cavity of the main body 1 by a snap fastener. The cover plate 22 has a circular hole, and the second rotating shaft 16 is movably disposed in the circular hole. By opening the cover plate 22, the gears and racks inside the cavity can be maintained.

[0037] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aerial work platform safety lock, characterized by: The utility model provides a kind of circular body (1), the sleeve (2) of one side of body (1) is fixed with up and down through, the end of body (1) away from sleeve is equipped with notch (3), the both sides of upper portion of body (1) are equipped with concentric slide hole (4), the both sides of upper portion in body (1) are equipped with concentric passageway (5), passageway (5) is communicated with the slide hole (4) of respective one side, the opening of passageway (5) lower end is located in the top wall of notch (3), the bottom wall of notch (3) is equipped with the lock hole (6) matched with passageway (5), lock hole (6) and passageway (5) are on the same circumference; The both sides of body (1) are rotatably connected with first rotating shaft (7) by rotating bearing respectively, first rotating shaft (7) is fixedly connected with rotating plate (8), the upper portion of rotating plate (8) side facing body is fixedly connected with slide bar (9), slide bar (9) is slidably arranged in corresponding slide hole (4), the inner end of slide bar (9) is connected with the lock bar (10) matched with passageway, lock bar (10) is movably arranged in corresponding passageway (5), the centre of slide hole (4), passageway (5), lock bar (10) and lock hole (6) are all located on the extension line of the axis of first rotating shaft (7); The side away from body in sleeve (2) is equipped with recess (11), body (1) and sleeve (2) are equipped with communicating slide (12), slide (12) is oppositely arranged with recess (11), cavity (13) is equipped in body (1) and is communicated with slide, pressure rod (14) is slidably arranged in slide (12), the end away from sleeve of pressure rod (14) is connected with gear rod (15), second rotating shaft (16) is arranged in cavity (13) and is rotatably connected with body (1), the inner end of second rotating shaft (16) is fixedly connected with gear (17), gear (17) is engaged with gear rod (15), the outer end of second rotating shaft (16) is arranged from the side of body (1).

2. A high place work safety lock according to claim 1, characterized in that: The upper portion of rotating plate (8) side away from body is equipped with first screw hole, first screw hole is located on the inside of the circumference where slide hole (4) is located, positioning screw rod (18) is threadedly connected in first screw hole, second screw hole (19) is equipped in body (1) near notch, the projection of second screw hole (19) on body is on the same circumference with first screw hole, when first screw hole is aligned with second screw hole (19), screwing positioning screw rod (18) can make it be threadedly connected in second screw hole (19).

3. A high place work safety lock according to claim 2, characterized in that: The outer end of first rotating shaft (7) is connected with first handle (20), and the outer end of second rotating shaft (16) is connected with second handle (21).

4. A high place work safety lock according to claim 3, characterized in that: The end face of pressure rod (14) facing recess (11) is provided with sawtooth pattern.

5. A high place work safety lock according to claim 4, characterized in that: The upper end of sleeve (2) is connected with positioning plate (23), and the both sides of positioning plate (23) are provided with a plurality of staggered clamping grooves (24).

6. A high place work safety lock according to claim 5, characterized in that: ​

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