A handheld anti-falling safety device used in conjunction with a safety belt and an application method thereof

Abstract

The present invention discloses a handheld anti-falling safety device used in conjunction with a safety belt and an application method thereof. The device comprises a first crank arm and a second crank arm. The middle parts of the two crank arms are hinged to form a clamp-type structure through a pin shaft. There are respectively a snap-fit ​​structure and a locking structure that can be opened and closed at the front and rear of the corresponding pin shaft between the two crank arms. The snap-fit ​​structure is closed while the locking structure is locked to ensure sufficient clamping force and stability. The two crank arms hold the foot nails on the pole tower. When the locking structure is opened, the snap-fit ​​structure is separated, and the two crank arms release the foot nails. There are safety belt connecting rings on both crank arms. The operator holds the safety device with both hands respectively, alternately clamps and releases the upper and lower foot nails to complete the safe climbing up and down the pole tower. When the operator misses a step during climbing, at least one of the two safety devices clamps the foot nail, and the weight of the operator acts on the ends of the two crank arms through the safety belt, so that the clamping sections of the two crank arms can firmly clamp the foot nails, thereby suspending the operator through the safety belt to avoid falling injuries.

Description

Technical Field

[0001] The invention belongs to the field of power transmission line operation, and in particular relates to a handheld anti-falling safety device used in conjunction with a safety belt and an application method thereof. Background Art

[0002] Transmission lines are spread all over my country's cities and rural areas. Whether it is line installation, operation, or maintenance, line workers are required to frequently go up and down poles and towers to perform high-altitude operations. When line workers climb up and down poles and towers, their personal protection is affected by their own mental state, physical condition, technical skills, and surrounding environmental factors. If a problem occurs in any link, a serious accident of a person falling from a height may occur. In addition, line accident repair operations are often carried out under relatively harsh natural conditions such as strong winds, thunderstorms, hail, heavy fog, and sandstorms. Therefore, only by taking necessary safety measures to prevent high-altitude falls can the personal safety of high-altitude workers be guaranteed.

[0003] Traditional protective measures, such as safety belts and anti-fall rails, all have their own shortcomings. The principle of hanging high and using low is adopted during the use of safety belts. Maintenance personnel need to bend down, loosen the belt, climb, and hang the belt every time they move, which greatly prolongs the climbing time and seriously consumes the physical strength of maintenance personnel, especially under harsh conditions such as high temperature. The physical strength consumed by climbing is more than twice that of normal. During the use of anti-fall rails, on the one hand, it is affected by the technical skills of maintenance personnel. When the climbing action is not coordinated, the anti-fall device may be locked by mistake. Maintenance personnel must manually restore the anti-fall device to normal state, which is time-consuming and laborious; on the other hand, the installation process of anti-fall rails is affected by the technical level. If the connecting parts are misaligned or unevenly connected, it will seriously affect the climbing process of maintenance personnel; secondly, the investment in anti-fall rails is high and the installation cycle is long. Summary of the invention

[0004] The purpose of the present invention is to provide a handheld anti-fall device that can directly climb the foot spikes on the pole tower and an application method thereof, and at the same time, the safety of the workers during the climbing process can be ensured by the cooperation of the safety belts worn by the workers and the device.

[0005] The handheld anti-falling safety device provided by the present invention for use with a safety belt comprises a first crank arm and a second crank arm. The middle parts of the two crank arms are hinged to form a clamp-type structure through a pin shaft. There are respectively an openable and closable buckling structure and a locking structure at the front and rear of the two crank arms corresponding to the pin shaft. When the locking structure is locked, the buckling structure is closed. The two crank arms hold the foot nails on the pole tower. When the locking structure is opened, the buckling structure is separated, and the two crank arms release the foot nails. There are safety belt connecting rings on both crank arms.

[0006] In one embodiment of the above technical solution, the front and rear of the turning point of the first crank arm and the second crank arm are respectively a clamping section and an opening and closing locking section, the buckling structure is located at the front end of the clamping section, the locking structure is located at the front part of the opening and closing locking section, and there is a ring at the end of the opening and closing locking section as a safety belt connecting ring.

[0007] In one embodiment of the above technical solution, the front ends of the clamping sections of the two crank arms have bending sections facing each other, one of the bending sections has a protruding convex head at the end, and the other bending section has a corresponding groove at the end, and the convex head and the groove serve as the buckling structure.

[0008] In one embodiment of the above technical solution, the hinge structure in the middle of the two crank arms is an embedded structure, and the middle of the two crank arms have embedded grooves of corresponding sizes, one of the embedded grooves has a pin shaft mounting hole at the center position, and the other embedded groove has a boss extending into the corresponding embedded groove at the center position, and the axial center of the boss has a pin shaft mounting hole.

[0009] In one implementation of the above technical solution, the pin shaft is a T-shaped head slot pin, and an annular groove is provided at the end section of its rod body, and the annular groove is equipped with an open retaining ring.

[0010] In one implementation of the above technical solution, when the two crank arms are hingedly assembled in the middle, the two grooves are opposite to each other, the boss is inserted into the pin shaft mounting hole in the center of the other crank arm groove, the T-head slot pin is inserted into the pin shaft mounting hole in the axial center of the boss, one end is limited by the T-head, and the other end is limited by an open retaining ring.

[0011] In one implementation of the above technical solution, a bolt extending toward the inner side of the other crank arm is provided on the inner side of the opening and closing locking section of one crank arm, and an embedding groove is provided on the opening and closing section of the other crank arm. The bolt corresponds to the front end of the embedding groove, and a locking groove is provided on the side wall of the bolt. An electric bolt lock is installed in the embedding groove. When the lock tongue of the electric bolt lock is extended, it is inserted into the locking groove and locked. The bolt and the electric bolt lock serve as the locking structure.

[0012] In one implementation of the above technical solution, the electric bolt lock is of the power-on unlocking type, and the mounting plate of the electric bolt lock is fixed to the crank arm by screws.

[0013] In one implementation of the above technical solution, a photoelectric diffuse reflection sensor is installed at the end of the bending section of the crutch arm clamping section.

[0014] The method for climbing a pole tower provided by the present invention comprises the following steps:

[0015] 1. Initial state setting of the safety device

[0016] The two arms of the safety device are opened, and the power-on and power-off time of the electric bolt lock is set. The initial state of the electric bolt lock is the power-off state, and the lock tongue extends out of the lock body;

[0017] 2. Put two safety belts on the operators and pass them through the rings at the end of the opening and closing locking sections of the two safety device crank arms, and then fasten the safety belts;

[0018] 3. Workers climb the tower with safety devices

[0019] (1) The operator holds the safety device with both hands. The clamping sections of the two crank arms of the safety device clamp the two lowest foot nails at the bottom of the tower. At the same time, the opening and closing locking sections of the two crank arms are buckled, and the lock tongue of the electric bolt is inserted into the groove on the bolt to lock;

[0020] (2) Power is supplied to the electric bolt lock of the safety device on one side, and its lock tongue is retracted, the safety device on the other side releases the foot nail, and the safety device on the other side keeps the foot nail clamped;

[0021] (3) The operator extends the hand holding the safety device on the side where the foot nail is released upward, so that the safety device on that side clamps the foot nail above. When the two crank arms of the safety device are buckled to clamp the foot nail, the position sensor on the crank arm sends an electrical signal to the electric lock on the safety device on the other side;

[0022] (4) The electric lock on the safety device on the other side receives the electrical signal and is powered on, the lock tongue is retracted, and the safety device on that side releases the foot nail;

[0023] Refer to steps (2)-(4) and alternately tighten and loosen the foot spikes to climb to the designated position.

[0024] The operation of lowering the tower is carried out in reverse order of steps (2) to (4).

[0025] The two crank arms of the safety device of the present invention have a buckling structure for clamping the foot nails and a locking structure matched with the buckling structure, so that the two crank arms have sufficient clamping force and stability when clamping the foot nails. The left and right hands of the operator respectively hold a safety device, alternately clamp and release the upper and lower foot nails, and complete the safe climbing up and down of the pole tower. When the operator's feet are empty during the climbing process, at least one of the two safety devices in his hand clamps the foot nail, and the weight of the operator acts on the ends of the two crank arms of the safety device through the safety belt, so that the two crank arms are firmly locked, so that the clamping sections of the two crank arms can firmly clamp the foot nails, so that the operator can be suspended by the safety belt to avoid falling injuries. By using this device, the cumbersome process of bending, loosening the belt, climbing, and hanging the belt when only using the safety belt is eliminated, and the physical exertion of the maintenance personnel is reduced; and the device does not require an anti-fall track during use, and a series of problems that occur when using the anti-fall track are completely avoided, and the life safety of the operator during the pole climbing process can be safely and effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of a three-dimensional structure of an embodiment of the present invention.

[0027] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the first crank arm.

[0028] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the second crank arm. DETAILED DESCRIPTION

[0029] Combination Figures 1 to 3 It can be seen that the handheld anti-falling safety device used in conjunction with a safety belt disclosed in this embodiment includes a first crank arm 1 , a second crank arm 2 , a pin shaft 3 , and an electric latch 4 .

[0030] The front and rear of the turning parts of the first turning arm 1 and the second turning arm 2 are respectively a clamping section and an opening and closing locking section, and the front end of the clamping section has a 90-degree bending section facing each other.

[0031] The end of the bending section of the first crank arm 1 has a protruding protrusion 11, and the end of the bending section of the second crank arm 2 has a corresponding groove. The protrusion 11 and the groove together form a buckling structure for clamping the foot nail.

[0032] A photoelectric diffuse reflection sensor is installed at the end of the bending section of the first turning arm or the second turning arm, and the preferred model is LTD-03NO (the photoelectric diffuse reflection sensor is not drawn in the figure).

[0033] The ends of the opening, closing and locking sections of the two crank arms are both provided with circular rings, and the two circular rings are opposite to each other up and down.

[0034] The hinged structure in the middle of the two crank arms is an embedded structure, and there are embedded grooves of corresponding sizes in the middle of the two crank arms, wherein a pin shaft mounting hole 21 is provided at the center position of the embedded groove on the second crank arm 2, and a boss 12 extending into the embedded groove on the first crank arm is provided at the center position of the embedded groove on the first crank arm, and a pin shaft mounting hole 21 is provided at the axial center of the boss.

[0035] The pin shaft 3 is a T-shaped head slot pin, and an annular groove is provided at the end section of its rod body, and an open retaining ring 5 is matched with the annular groove.

[0036] When the middle parts of the two crank arms are hinged and assembled, the two embedded grooves are opposite to each other, the boss 12 on the first crank arm is inserted into the pin shaft mounting hole on the second crank arm, and the T-head slot pin 3 is inserted into the pin shaft mounting hole at the axial center of the boss, one end is limited by the T-head, and the other end is limited by the open retaining ring 5.

[0037] The inner side of the opening and closing locking section of the first crank arm 1 is provided with a bolt 13 extending toward the inner side of the other crank arm, the opening and closing section of the second crank arm is provided with an embedding groove 22, the bolt 13 corresponds to the front end of the embedding groove 22, the side wall of the bolt 13 is provided with a locking groove 131, the electric bolt 4 is installed in the embedding groove 22, and the lock tongue of the electric bolt 4 is inserted into the locking groove when it is extended to lock the two crank arms.

[0038] The electric bolt lock 4 of the present embodiment is of the power-off unlocking type, and the mounting plate 41 of the electric bolt lock is fixed to the second crank arm 2 by screws.

[0039] The specific steps for using the above safety device are as follows:

[0040] 1. Initial state setting of the safety device

[0041] The two arms of the safety device are opened, and the power-on and power-off time of the electric bolt lock is set. The initial state of the electric bolt lock is the power-off state, and the lock tongue extends out of the lock body. That is, the power-off state of the electric bolt lock is defined as the initial state.

[0042] 2. Pass the two safety belts worn by the operators through the rings at the end of the opening and closing locking sections of the two safety device crank arms and secure the safety belts;

[0043] 3. Workers climb the tower with safety devices

[0044] (1) The operator holds the safety device with both hands. The clamping sections of the two crank arms of the safety device clamp the two lowest foot nails at the bottom of the tower. At the same time, the opening and closing locking sections of the two crank arms are buckled, and the lock tongue of the electric bolt is inserted into the groove on the bolt and locked. This is the initial state of climbing.

[0045] (2) Power is supplied to the electric bolt lock of the safety device on one side, and its lock tongue is retracted, the safety device on the other side releases the foot nail, and the safety device on the other side keeps the foot nail clamped;

[0046] (3) The operator extends the hand holding the safety device on the side where the foot nail is released upward, so that the safety device on that side clamps the foot nail above. When the two crank arms of the safety device are buckled to clamp the foot nail, the position sensor on the crank arm sends an electrical signal to the electric lock on the safety device on the other side;

[0047] (4) The electric bolt lock on the other side safety device receives the electric signal and is powered on, the bolt is retracted, and the safety device on that side releases the foot nail. The duration of the electric signal is set according to the actual situation. Generally speaking, it is more appropriate to set it to two seconds.

[0048] Refer to steps (2)-(4) and alternately tighten and loosen the foot spikes to climb to the designated position.

[0049] The operation of lowering the tower is carried out in reverse order of steps (2) to (4).

[0050] The two crank arms of the safety device have a buckling structure for clamping the foot nails and a locking structure matched with the buckling structure, so that the two crank arms have sufficient clamping force and stability when clamping the foot nails. The operator holds a safety device in the left and right hands respectively, alternately clamps and releases the upper and lower foot nails, and completes the safe climbing up and down of the pole tower. When the operator's feet are empty during the climbing process, at least one of the two safety devices in his hand clamps the foot nail, and the weight of the operator acts on the ends of the two crank arms of the safety device through the safety belt, so that the two crank arms are firmly locked, so that the clamping sections of the two crank arms can firmly clamp the foot nails, so that the operator can be suspended by the safety belt to avoid falling injuries. By using this device, the cumbersome process of bending, loosening the belt, climbing, and hanging the belt when only using the safety belt is eliminated, and the physical exertion of the maintenance personnel is reduced; and the device does not require a fall prevention track during use, which completely avoids a series of problems that occur when using the fall prevention track, and can safely and effectively protect the life safety of the operator during the pole climbing process.

Claims

1. A method for climbing the foot spikes on a pole tower by using a handheld anti-fall safety device used in conjunction with a safety belt, wherein the handheld anti-fall safety device used in the method comprises a first crank arm and a second crank arm, wherein the middle parts of the two crank arms are hinged to form a clamp-type structure through a pin shaft, and a buckle structure and a locking structure that can be opened and closed are respectively provided at the front and rear of the two crank arms corresponding to the pin shaft, wherein the buckle structure is closed while the locking structure is locked, and the two crank arms hold the foot spikes on the pole tower, and the buckle structure is separated when the locking structure is opened, and the two crank arms release the foot spikes, and both crank arms are provided with safety belt connecting rings; The front and rear of the turning point of the first crank arm and the second crank arm are respectively a clamping section and an opening and closing locking section, the buckling structure is located at the front end of the clamping section, the locking structure is located at the front part of the opening and closing locking section, and the end of the opening and closing locking section has a ring as a safety belt connecting ring; A photoelectric diffuse reflection sensor is installed at the end of the bending section of the crutch clamping section; The climbing steps are as follows:

1. Initial state setting of the safety device The two arms of the safety device are opened, and the power-on and power-off time of the electric bolt lock is set. The initial state of the electric bolt lock is the power-off state, and the lock tongue extends out of the lock body; 2. Put two safety belts on the operators and pass them through the rings at the end of the opening and closing locking sections of the two safety device crank arms, and then fasten the safety belts; 3. Workers climb the tower with safety devices (1) The operator holds the safety device with both hands. The clamping sections of the two crank arms of the safety device clamp the two lowest foot nails at the bottom of the tower. At the same time, the opening and closing locking sections of the two crank arms are buckled, and the lock tongue of the electric bolt is inserted into the groove on the bolt and locked; (2) Power is supplied to the electric bolt lock of the safety device on one side, and its lock tongue is retracted. The safety device on this side releases the foot nail, while the safety device on the other side keeps the foot nail clamped; (3) The operator extends the hand holding the safety device on the side that has released the foot nail upward, so that the safety device on that side clamps the foot nail above. When the two crank arms of the safety device snap together to clamp the foot nail, the photoelectric diffuse reflection sensor on the crank arm sends an electrical signal to the electric lock on the safety device on the other side. (4) The electric bolt lock on the safety device on the other side receives the electrical signal and is powered on, the bolt is retracted, and the safety device on that side releases the foot nail; Refer to steps (2) to (4) and alternately tighten and loosen the foot spikes to climb to the designated position. The operation of lowering the tower is carried out in reverse order of steps (2) to (4).

2. The method according to claim 1, characterized in that: The front ends of the clamping sections of the two crank arms are provided with bent sections facing each other, one of the bent sections has a protruding convex head at the end, and the other bent section has a corresponding groove at the end, and the convex head and the groove serve as the buckling structure.

3. The method according to claim 1, characterized in that: The hinged structure in the middle of the two crank arms is an embedded structure, and there are embedded grooves of corresponding sizes in the middle of the two crank arms. There is a pin shaft mounting hole at the center position of one of the embedded grooves, and there is a convex column extending into the corresponding embedded groove at the center position of the other embedded groove, and there is a pin shaft mounting hole at the axial center of the convex column.

4. The method according to claim 3, characterized in that: The pin shaft is a T-shaped head slot pin, and an annular groove is provided at the end section of its rod body, and the annular groove is matched with an open retaining ring.

5. The method according to claim 4, characterized in that: When the middle parts of the two crank arms are hinged and assembled, the two grooves are opposite to each other, the boss is inserted into the pin shaft mounting hole in the center of the groove of the other crank arm, the T-head slot pin is inserted into the pin shaft mounting hole in the axial center of the boss, one end is limited by the T-head, and the other end is limited by the open retaining ring.

6. The method according to claim 5, characterized in that: The inner side of the opening and closing locking section of one of the crank arms is provided with a bolt extending toward the inner side of the other crank arm, the opening and closing section of the other crank arm is provided with an embedding groove, the bolt corresponds to the front end of the embedding groove, the side wall of the bolt is provided with a locking groove, an electric bolt lock is installed in the embedding groove, and the lock tongue of the electric bolt lock is inserted into the locking groove and locked when it is extended, and the bolt and the electric bolt lock serve as the locking structure.

7. The method according to claim 6, characterized in that: The electric bolt lock is of the power-on unlocking type, and the mounting plate of the electric bolt lock is connected and fixed to the crank arm by screws.

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