Fixed type steel strand flexible guide rail anti-falling device for aloft work

Abstract

The invention belongs to the technical field of aloft work, and discloses a fixed steel strand flexible guide rail anti-falling device for aloft work, which comprises a steel strand and a safety rope. Through cooperation of structures such as a trigger assembly and a second lock catch, when a worker slips or suddenly falls down, the first lock catch and the protection box are pulled by the weight of the worker through a safety rope, the guide block is driven to descend by downward impact force applied by falling down, two steel bars are directly extruded by two slopes on the guide block, and the steel bars are deformed; the protection box further drives the upper ends of the two second lock catches to be folded outwards through the guide rods and press the steel strand to be tightly attached to the rolling shaft, the second lock catches can be prevented from sliding on the steel strand through friction force generated by pressing the steel strand through the second lock catches, secondary damage to workers due to sliding is avoided, and the lower ends of the two second lock catches are folded oppositely, so that the safety of workers is improved. The safety rope is pressed by the second lock catch to be tightly attached to the bottom of the protection box, falling impact force is distributed on all contact points of the safety rope pressed by the second lock catch, and therefore the possibility that the safety rope is broken is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of aerial work, and in particular is a fixed steel strand flexible guide rail anti-falling device for aerial work. Background Art

[0002] Steel strand is a wire made of multiple strands of steel wire. It has high strength, good toughness and corrosion resistance. It is usually connected to the high-altitude power tower through a flexible guide rail, so that the system can withstand greater tension and adapt to the movement trajectory of the load. Steel strand is mainly used to support and fix power lines. In high-altitude operations, workers usually use simple locks and safety ropes to connect workers to steel strands, thereby protecting workers working at high altitudes. In the existing technical solutions, the lock is generally in an active state. This relatively simple structure of the equipment still poses a risk of personnel falling during pole tower construction and maintenance operations. If a worker falls from the tower due to a fall or failure to stand firmly during high-altitude operations, the lock is very likely to slip on the steel strand, making it difficult for the worker to control his position. The impact force generated may also damage the safety rope and increase the risk factor of manual high-altitude operations. For this reason, we provide a fixed steel strand flexible guide rail anti-fall device for high-altitude operations. Summary of the invention

[0003] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a fixed steel strand flexible guide rail anti-fall device for high-altitude operations, which solves the problem that when workers fall from a high tower due to a fall or failure to stand firmly during high-altitude operations, the lock is very likely to slip on the steel strand, thereby increasing the risk factor of high-altitude operations.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a fixed steel strand flexible guide rail anti-falling device for aerial work, comprising a steel strand and a safety rope, and also comprising a trigger assembly, wherein the trigger assembly comprises a protection box, and a lock buckle is fixedly mounted at both ends of the bottom of the protection box, a guide block is fixedly mounted inside the protection box, and a plurality of guide rods are installed inside the protection box; The fixed steel strand flexible guide rail anti-falling device also includes a limit assembly and two lock buckles 2; The limiting assembly comprises a limiting frame slidably mounted inside the protection box, and two steel bars in contact with the guide block are symmetrically mounted on the limiting frame; The lock buckle 2 is divided into two parts, an upper part and an lower part. The upper end of the lock buckle 2 is provided with an opening and is in a staggered state. The lower ends of the two lock buckles 2 are curved and the curved parts are staggered. The curved parts of the lock buckles 2 are installed with positioning rods. The second lock buckle movably penetrates the protection box, the second lock buckle is hung on the steel strand through the opening at its upper end, and the safety rope sequentially penetrates a first lock buckle, a gap between the second lock buckle and the positioning rod, and another first lock buckle; The fixed steel strand flexible guide rail anti-falling device also includes a locking assembly arranged on the protection box; The locking assembly includes a support shaft that movably passes through the top of the protection box and is welded to the limit frame. A roller is rotatably connected to the support shaft. The steel strand is in contact with the roller. A reduction gear set is fixedly installed on the support frame away from the support shaft. The roller is transmission-connected to the input end of the reduction gear set.

[0005] Preferably, the protection box, guide block, guide rod and lock buckle are all made of titanium alloy, and the surface of the guide block that contacts the two steel bars is in an inclined state; The trigger assembly also includes a plurality of limit slots 1 opened on the protection box, and the two lock buckles 2 are movable tubes that pass through each limit slot 1.

[0006] Preferably, the limiting assembly further comprises support frames staggeredly installed on both sides of the limiting frame, each of the support frames is respectively installed with a limiting plate, and the limiting plate is provided with a second limiting groove.

[0007] Preferably, the two limiting plates are staggered, and the ends of the two second locking buckles at the openings are respectively movable inside the second limiting grooves.

[0008] Preferably, the locking assembly further comprises a gear drivingly connected to the output end of the reduction gear set, and a toothed plate is installed on a side of the protection box close to the reduction gear set, and the toothed plate is adapted to the gear.

[0009] Preferably, the limit assembly also includes two springs, and the two ends of the top of the limit frame are elastically connected to the inside of the protection box through the two springs, and the two ends of the top of the limit frame are respectively fixed with a bellows, dry ice is placed inside the bellows, and the air outlet end of the bellows faces the outer periphery of the roller.

[0010] Preferably, the bottom of the bellows is made of metal, and a sealing cover with threads is provided on the top of the bellows.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The present invention cooperates with structures such as a trigger component and a lock buckle 2. When a worker slips or falls suddenly, his or her own weight pulls the lock buckle 1 and the protection box through the safety rope. The fall exerts a downward impact force that drives the guide block to descend. The two inclined surfaces thereon directly squeeze the two steel bars and deform the steel bars. The protection box also drives the upper ends of the two lock buckles 2 to fold outward through the guide rod and compress the steel strands to fit closely to the roller. The friction force generated by the lock buckles 2 compressing the steel strands can prevent the lock buckles 2 from sliding on the steel strands, thereby avoiding secondary injuries to the worker caused by sliding. The lower ends of the two lock buckles 2 are folded toward each other, compressing the safety rope to fit closely to the bottom of the protection box. The impact force of the fall is distributed to various contact points of the lock buckles 2 compressing the safety rope, thereby avoiding the possibility of the safety rope breaking.

[0012] The present invention cooperates with structures such as lock buckle 2 and limit assembly. When a worker works on the platform, the device does not bear the weight of the worker and is in a relaxed state. At this time, the opening of the lock buckle 2 is blocked by the limit plate, and the openings of the two lock buckles 2 are staggered with each other, which makes it more difficult for the steel strand to escape from the device and cause danger to the worker. When the worker pulls one of the lock buckles 2 to fold and cause it to escape from the limit groove 2, the steel strand can enter the inner side of the lock buckle 2 through the gap between the opening of the lock buckle 2 and the limit plate, and the other lock buckle 2 is operated in the same way, thereby making the installation more convenient.

[0013] The present invention cooperates with structures such as a locking assembly and a trigger assembly. When the protection box descends, the lock buckle 2 will not only press the steel strand tightly against the roller, but also the protection box will drive the tooth plate to descend and engage with the gear. At this time, the tooth plate and the roller will not be able to work, and the steel strand will not be able to drive the roller to roll. Furthermore, the device is prevented from sliding on the steel strand, thereby ensuring the safety of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the protection box of the present invention; Figure 3 This is a schematic diagram of the cooperation between the bottom structure of the protection box and the safety rope of the present invention; Figure 4 This is a schematic diagram of the protection box of the present invention cooperating with the second lock through each guide rod; Figure 5 It is a schematic diagram of the coordination between the limit frame and the second lock structure of the present invention; Figure 6 It is a schematic diagram of the coordination of the limit frame and the locking assembly structure of the present invention; Figure 7 This is a schematic diagram of the structural coordination between the support frame and the reduction gear set of the present invention; Figure 8It is a schematic diagram of the structural coordination between the protection box and the locking assembly of the present invention.

[0015] In the figure: 1. trigger assembly; 11. protection box; 12. guide block; 13. guide rod; 14. lock buckle 1; 15. limit slot 1; 2. limit assembly; 21. limit frame; 22. steel bar; 23. support frame; 24. limit plate; 25. limit slot 2; 26. spring; 27. bellows; 3. lock buckle 2; 31. positioning rod; 4. steel strand; 5. safety rope; 6. locking assembly; 61. support shaft; 62. roller; 63. reduction gear set; 64. tooth plate; 65. gear. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figures 1 to 8 As shown, the present invention provides a fixed steel strand flexible guide rail anti-falling device for aerial work, comprising a steel strand 4 and a safety rope 5, and also comprising a trigger assembly 1, the trigger assembly 1 comprising a protection box 11, two ends of the bottom of the protection box 11 are respectively fixed with a lock buckle 14, a guide block 12 is fixed inside the protection box 11, and a plurality of guide rods 13 are installed inside the protection box 11; The fixed steel strand flexible guide rail anti-falling device also includes a limit assembly 2 and two lock buckles 3; The limiting assembly 2 includes a limiting frame 21 slidably mounted inside the protection box 11, and two steel bars 22 in contact with the guide block 12 are symmetrically mounted on the limiting frame 21; The lock buckle 2 3 is divided into two parts, the upper lock buckle 2 3 is provided with an opening and is in a staggered state, the lower ends of the two lock buckles 2 3 are bent and the bent parts are staggered, and the bent parts of the lock buckle 2 3 are installed with a positioning rod 31; The lock buckle 2 3 movably penetrates the protection box 11, and the lock buckle 2 3 is hung on the steel strand 4 through the opening at the upper end thereof, and the safety rope 5 sequentially penetrates a lock buckle 1 14, the gap between the lock buckle 2 3 and the positioning rod 31, and another lock buckle 1 14; The fixed steel strand flexible guide rail anti-falling device further includes a locking assembly 6 arranged on the protection box 11; The locking assembly 6 includes a support shaft 61 that movably passes through the top of the protection box 11 and is welded to the limit frame 21. A roller 62 is rotatably connected to the support shaft 61. The steel strand 4 is in contact with the roller 62. A reduction gear set 63 is fixedly installed on the support frame 23 on the side away from the support shaft 61. The roller 62 is transmission-connected to the input end of the reduction gear set 63.

[0018] The protection box 11, the guide block 12, the guide rod 13 and the lock buckle 14 are all made of titanium alloy, and the surface of the guide block 12 that contacts the two steel bars 22 is in an inclined state; The trigger assembly 1 further comprises a plurality of limiting grooves 15 formed on the protection box 11 , and the two locking buckles 2 3 are movable tubes that penetrate through each limiting groove 15 .

[0019] Adopting the above scheme: before the worker performs aerial work, the two lock buckles 2 3 need to be hung on the steel strand 4 in sequence, and then the safety rope 5 is passed through the lock buckle 1 14 and the lock buckle 2 3 as described in the above work process, and then the safety rope 5 is installed on the aerial work safety clothing according to the process flow, and the worker can continue the rest of the work process; When a worker loses his footing or falls suddenly, his own weight will inevitably tighten the safety rope 5 and pull the lock buckle 14 and the protection box 11 through the safety rope 5. At this time, the downward impact force exerted by the worker's fall will drive the guide block 12 to move downward, and the two inclined surfaces on it will directly squeeze the two steel bars 22 and cause the steel bars 22 to deform; It is particularly important to note that during normal use, although the worker pulls the lock buckle 14, the protection box 11 and the guide block 12 down through the safety rope 5, and the guide block 12 presses the steel bar 22, his weight will not cause the guide block 12 to press the steel bar 22 to excessively deform, but the impact force generated by the worker falling will be much greater than the worker's own weight, so when falling, the impact force exerted by the guide block 12 on the steel bar 22 will force it to deform, and the guide block 12 will continue to fall; Since the lock buckle 23 is hooked on the steel strand 4, the positions of the lock buckle 23 and the limit frame 21 will not change, and the lowering of the protection box 11 will drive the upper ends of the two lock buckles 23 to fold outward through the guide rod 13, which will also press the steel strand 4 to close to the roller 62. The friction force generated by the lock buckle 23 pressing the steel strand 4 can prevent the lock buckle 23 from sliding on the steel strand 4, thereby avoiding secondary injuries to workers caused by sliding; Furthermore, the lower ends of the two lock buckles 23 will be folded toward each other, and through the limitation of the positioning rod 31, they compress the safety rope 5 close to the bottom of the protection box 11, and the impact force generated by the worker's fall can be distributed on the various contact points where the lock buckles 23 compress the safety rope 5, thereby avoiding the possibility of the safety rope 5 breaking, and further improving the anti-fall performance of the device.

[0020] like Figure 1 and Figure 2 The limiting assembly 2 further comprises support frames 23 which are staggeredly installed on both sides of the limiting frame 21 , and each support frame 23 is respectively installed with a limiting plate 24 , and a limiting groove 25 is provided on the limiting plate 24 .

[0021] The two limiting plates 24 are staggered, and the ends of the openings of the two locking buckles 23 are movable inside the limiting grooves 25 respectively.

[0022] With the above solution, when a worker is working on the platform, the device does not bear the weight of the worker and is in a relaxed state. At this time, the opening of the lock buckle 2 3 is blocked by the limit plate 24, and the openings of the two lock buckles 2 3 are interlaced with each other, which makes it more difficult for the steel strand 4 to escape from the device and cause danger to the worker. When a worker pulls one of the lock buckles 23 to fold and disengage it from the limiting groove 25, the steel strand 4 can enter the inner side of the lock buckle 23 through the gap between the opening of the lock buckle 23 and the limiting plate 24, and the other lock buckle 23 is operated in the same way, thereby making the installation more convenient.

[0023] like Figure 1-Figure 4 and Figure 6-Figure 8 As shown, the locking assembly 6 also includes a gear 65 drivingly connected to the output end of the reduction gear set 63 , and a toothed plate 64 is installed on one side of the protection box 11 close to the reduction gear set 63 , and the toothed plate 64 is adapted to the gear 65 .

[0024] Adopting the above scheme: when the protection box 11 descends, the lock 2 3 will not only press the steel strand 4 against the roller 62, but also the protection box 11 drives the tooth plate 64 to descend and engage with the gear 65. At this time, the tooth plate 64 and the roller 62 cannot work, and the steel strand 4 will not be able to drive the roller 62 to roll. Furthermore, it prevents the device from sliding on the steel strand 4, thereby ensuring the safety of the workers.

[0025] like Figure 1-Figure 4 and Figure 6-Figure 8 As shown, the limit assembly 2 also includes two springs 26. The two ends of the top of the limit frame 21 are elastically connected to the inside of the protection box 11 through the two springs 26. The two ends of the top of the limit frame 21 are respectively fixed with a bellows 27. Dry ice is placed inside the bellows 27. The air outlet end of the bellows 27 faces the outer periphery of the roller 62.

[0026] With the above solution, since the lock buckle 2 3 is hung on the steel strand 4, the lock buckle 2 3 and the limit frame 21 cannot move up and down. When the protection box 11 descends, the cold air released by the dry ice inside the bellows 27 is compressed and discharged. The air outlet end of the bellows 27 also guides the cold air to flow onto the roller 62, thereby avoiding friction overheating and damaging the steel strand 4. It should be noted that after the dry ice inside the bellows 27 is completely volatilized, it needs to be added in time to ensure that cold air always exists inside the bellows.

[0027] like Figure 1-Figure 4 and Figure 6-Figure 8 As shown, the bottom of the bellows 27 is made of metal, and a sealing cover with threads is provided on the top of the bellows 27.

[0028] With the above solution, the dry ice inside the bellows 27 needs to be removed after each operation to prevent the dry ice from being in the bellows 27 for a long time, thereby damaging the telescopic part of the bellows 27. Before each operation, the dry ice can be replaced. The threaded sealing cover can prolong the time that the dry ice is kept inside the bellows 27 and the working time of the device.

[0029] The working principle and use process of the present invention: When the worker is working on the platform, the device does not bear the weight of the worker and is in a relaxed state. When the worker pulls one of the lock buckles 2 3 to fold and cause it to disengage from the limiting groove 25, the steel strand 4 can enter the inner side of the lock buckle 2 3 through the gap between the opening of the lock buckle 2 3 and the limiting plate 24. The other lock buckle 2 3 is operated in the same way. At this time, the opening of the lock buckle 2 3 is blocked by the limiting plate 24, and the openings of the two lock buckles 2 3 are interlaced with each other, which makes it more difficult for the steel strand 4 to disengage from the device. The safety rope 5 is passed through the lock buckle 1 14 and the lock buckle 2 3 in turn, and then the safety rope 5 is installed on the high-altitude work safety clothing according to the process flow; When a worker loses his footing or falls suddenly, his own weight will inevitably tighten the safety rope 5 and pull the lock buckle 14 and the protection box 11 through the safety rope 5. At this time, the downward impact force exerted by the worker's fall will drive the guide block 12 to move downward, and the two inclined surfaces on it will directly squeeze the two steel bars 22 and cause the steel bars 22 to deform; The protection box 11 descends and drives the upper ends of the two lock buckles 3 to fold outward through the guide rod 13, which will also press the steel strand 4 to be close to the roller 62. The protection box 11 drives the tooth plate 64 to descend and mesh with the gear 65. At this time, the tooth plate 64 and the roller 62 cannot work, and the steel strand 4 will not be able to drive the roller 62 to roll. The friction force generated by the lock buckle 2 3 pressing the steel strand 4 can prevent the lock buckle 2 3 from sliding on the steel strand 4. The lower ends of the two lock buckles 2 3 will be folded toward each other, and through the restriction of the positioning rod 31, the safety rope 5 is pressed against the bottom of the protection box 11, and the impact force generated by the worker's fall can be distributed to each contact point of the lock buckle 2 3 pressing the safety rope 5; The protective box 11 descends to compress the cold air released by the dry ice inside the bellows 27 to be discharged, and the air outlet end of the bellows 27 also guides the cold air to flow onto the roller 62, thereby avoiding friction overheating.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed steel strand flexible guide rail anti-fall device for aerial work, comprising a steel strand (4) and a safety rope (5), characterized in that: It also comprises a trigger assembly (1), the trigger assembly (1) comprising a protection box (11), a lock buckle (14) is fixedly mounted at both ends of the bottom of the protection box (11), a guide block (12) is fixedly mounted inside the protection box (11), and a plurality of guide rods (13) are installed inside the protection box (11); The fixed steel strand flexible guide rail anti-falling device also includes a limit assembly (2) and two lock buckles (3); The limiting assembly (2) comprises a limiting frame (21) slidably mounted inside the protection box (11), and two steel bars (22) in contact with the guide block (12) are symmetrically mounted on the limiting frame (21); The lock buckle 2 (3) is divided into two parts, an upper part and an lower part. The upper end of the lock buckle 2 (3) is provided with an opening and is in a staggered state. The lower ends of the two lock buckles 2 (3) are bent and the bent parts are staggered. The bent parts of the lock buckle 2 (3) are installed with positioning rods (31). The second lock buckle (3) movably penetrates the protection box (11), the second lock buckle (3) is hung on the steel strand (4) through the opening at the upper end thereof, and the safety rope (5) sequentially penetrates a first lock buckle (14), a gap between the second lock buckle (3) and the positioning rod (31), and another first lock buckle (14); The fixed steel strand flexible guide rail anti-falling device further comprises a locking assembly (6) arranged on the protection box (11); The locking assembly (6) comprises a support shaft (61) which movably passes through the top of the protection box (11) and is welded to the limit frame (21); a roller (62) is rotatably connected to the support shaft (61); the steel strand (4) is in contact with the roller (62); a reduction gear set (63) is fixedly mounted on the support frame (23) on the side away from the support shaft (61); and the roller (62) is drivingly connected to the input end of the reduction gear set (63).

2. The fixed steel strand flexible guide rail anti-falling device for aerial work according to claim 1 is characterized in that: The protection box (11), the guide block (12), the guide rod (13) and the lock buckle (14) are all made of titanium alloy, and the surface of the guide block (12) that contacts the two steel bars (22) is in an inclined state; The trigger assembly (1) further comprises a plurality of limiting grooves (15) formed on the protection box (11), and the two locking buckles (3) are movable tubes that penetrate through each limiting groove (15).

3. The fixed steel strand flexible guide rail anti-falling device for aerial work according to claim 1 is characterized in that: The limiting assembly (2) further comprises support frames (23) staggeredly mounted on both sides of the limiting frame (21), each of the support frames (23) being respectively mounted with a limiting plate (24), and the limiting plate (24) being provided with a second limiting slot (25).

4. The fixed steel strand flexible guide rail anti-falling device for aerial work according to claim 3 is characterized in that: The two limiting plates (24) are staggered, and the ends of the two lock buckles (3) at the openings are respectively movable inside the limiting grooves (25).

5. The fixed steel strand flexible guide rail anti-falling device for aerial work according to claim 4 is characterized in that: The locking assembly (6) further comprises a gear (65) drivingly connected to the output end of the reduction gear set (63); a toothed plate (64) is mounted on a side of the protection box (11) close to the reduction gear set (63); the toothed plate (64) is adapted to fit the gear (65).

6. The fixed steel strand flexible guide rail anti-falling device for aerial work according to claim 5 is characterized in that: The limiting assembly (2) further comprises two springs (26), and the two ends of the top of the limiting frame (21) are elastically connected to the inside of the protection box (11) via the two springs (26), and the two ends of the top of the limiting frame (21) are respectively fixed with a bellows (27), dry ice is placed inside the bellows (27), and the air outlet end of the bellows (27) faces the outer periphery of the roller (62).

7. The fixed steel strand flexible guide rail anti-falling device for aerial work according to claim 6 is characterized in that: The bottom of the bellows (27) is made of metal, and a sealing cover with threads is provided on the top of the bellows (27).

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