CN218900622U

CN218900622U - Drop-down iron tower climbing anti-falling device

Info

Publication number: CN218900622U
Application number: CN202222746445.7U
Authority: CN
Inventors: 李勃铖; 张良; 杨昊彦; 李稳; 姜胜; 吴坚; 雷添; 王建林; 张鹏; 吴雯; 罗文灿; 胡茗舰
Original assignee: Super High Voltage Transmission Co Of State Grid Hunan Electric Power Co ltd; State Grid Corp of China SGCC; State Grid Hunan Electric Power Co Ltd
Current assignee: Super High Voltage Transmission Co Of State Grid Hunan Electric Power Co ltd; State Grid Corp of China SGCC; State Grid Hunan Electric Power Co Ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-04-25
Anticipated expiration: 2032-10-18

Abstract

The utility model discloses a drop-down type iron tower climbing anti-falling device, which comprises a C-shaped hook and a vertical arm connected with one side of the C-shaped hook, wherein a main shaft capable of elastically resetting is arranged in the vertical arm; the holding sleeve is pulled down to lock the pins together with the C-shaped hook, and after the force is removed from the handle, the main shaft elastically resets to drive the handle to reset and the lock catch to open. The holding sleeve can be forced to pull downwards to drive the main shaft to move downwards, so that the main shaft drives the lock catch to rotate anticlockwise to lock the leg nails together with the C-shaped hook, the main shaft is reset upwards when the holding sleeve is unloaded, and the lock catch is rotated clockwise to open and loosen the leg nails when the holding sleeve is reset. The anti-falling device can be skillfully integrated into the climbing action of the iron tower of an operator, is simple to operate, can always ensure that one anti-falling device firmly clamps the foot nails during the climbing process, and is safe and reliable to use.

Description

Drop-down iron tower climbing anti-falling device

Technical Field

The utility model belongs to the field of power transmission line overhaul operation, and particularly relates to a drop-down type iron tower climbing falling protector.

Background

The ultra-high voltage transmission line continuously transmits electric energy into thousands of households, and the energy arteries need line maintenance personnel to check and eliminate defects regularly so as to ensure reliable power supply. The maintainer climbs by bare hands along the tower body to vertically arrange the foot nails to reach the operation position at the top of the tower, and the process needs to consume a great deal of physical strength of the operator. If the worker does not have anti-falling protection measures in the tower climbing process, the worker may fall down to risk injury or death once the worker catches the tower to get empty or steps on the tower or the worker is not physically supported in the tower climbing process.

202021950287.1 discloses a climbing tower falling protector which uses a plurality of electronic elements such as a tension sensor, a signal transceiver, an electromagnetic coil and the like, and is matched with mobile phone end control software, so that the structure is complex, the manufacturing cost is high, and the maintenance is difficult. Meanwhile, the anti-falling device is worn on the wrist through the wrist strap, and is locked and unlocked through sensor sensing, so that the load on the wrist is large, normal climbing actions of operators are influenced, and when a power supply is disconnected or an electronic element fails, the anti-falling device is easy to block or fail, so that the requirements of flexibility, reliability and no influence on normal climbing of an iron tower are not met.

202020415442.3 discloses an iron tower anti-falling protector, 201921741986.2 discloses an anti-falling safety protection device for a power transmission iron tower, and the anti-falling safety protection device is reliable in structure, but in the process of climbing the iron tower, operators need to operate the anti-falling protector to complete a set of four steps of opening, clamping pins, unlocking and releasing pins once every time the operators climb upwards, and great burden is brought to the operators to influence the climbing of the normal iron tower.

Disclosure of Invention

The utility model aims to provide the drop-down type iron tower climbing anti-falling device which is simple in structure, easy to operate and safe and reliable to use.

The utility model provides a drop-down type iron tower climbing anti-falling device, which comprises a C-shaped hook and a vertical arm connected with one side of the C-shaped hook, wherein a main shaft capable of elastically resetting is arranged in the vertical arm; the lock catch and the C-shaped hook are locked together through the pull-down holding sleeve, and after the grip is unloaded, the main shaft elastically resets to drive the grip to reset and the lock catch to be opened.

In one embodiment of the above fall arrester, the cross section of the C-shaped hook is in an inverted U shape, the vertical arm is a rectangular arm, and a vertical mounting hole is provided therein.

In one embodiment of the above-mentioned safety hook, the main shaft is divided into a top section, a middle section and a lower section by the first convex ring and the second convex ring, the upper section of the top section is provided with a U-shaped groove along the axial center plane, the middle section is sleeved with a tension spring, the lower section is sleeved with the lower end of the tension spring, the lower end of the tension spring is fixedly connected with the top surface of the second convex ring, and the upper end of the compression spring is fixedly connected with the bottom surface of the second convex ring.

In one embodiment of the above fall arrester, the first and second collars are respectively provided with radial holes for mounting the horizontal connecting rod, and directions of the two radial holes are vertically arranged.

In one embodiment of the above anti-falling device, a first stop ring is arranged on the inner wall of the vertical mounting hole corresponding to the upper end of the tension spring, a second stop ring is arranged on the lower end corresponding to the compression spring, the upper end of the tension spring is fixedly connected with the bottom surface of the first stop ring, and the lower end of the compression spring is limited by the second stop ring.

In one embodiment of the above fall arrester, the lower end of the main shaft is connected with a safety rope.

In one embodiment of the above-mentioned fall arrester, the lock catch includes a main shaft articulated arm and a lock tongue at its outer end, a chute along its length direction is provided at an inner end section of the main shaft articulated arm, a round hole is provided at a corner of the main shaft articulated arm and the lock tongue, and a pin is disposed at the round hole.

In one embodiment of the above-mentioned fall arrester, the hinge arm is disposed in the U-shaped groove, and is fixedly connected to the main shaft through a connecting shaft passing through the chute, and two ends of the pin are fixedly connected to the C-shaped hook, and the lock catch can rotate around the pin.

In one embodiment of the above-mentioned safety catch, the safety catch further comprises a hand guard shell, the hand guard shell comprises a vertical section and a semicircular section connected with the lower end of the vertical section, and an inner inclined section connected with the upper end of the semicircular section, the upper end of the semicircular section is connected with the lower end of the vertical arm, the outer end of the inner inclined section is connected with the side wall of the side of the notch of the C-shaped hook corresponding to the upper end of the vertical arm, and the semicircular section is provided with a safety rope mounting groove and a hanging ring.

In one embodiment of the above fall arrester, the inner inclined section is provided with a yielding groove for movement of the lock tongue.

According to the utility model, the elastic reset main shaft is arranged in the vertical arm connected with the C-shaped hook, the holding sleeve is fixedly arranged outside the vertical arm through the horizontal connecting rod sleeve, the vertical arm is provided with the guide groove of the horizontal connecting rod, and the top of the main shaft is hinged with the lock catch capable of rotating relative to the C-shaped hook, so that the structure is simple. The working principle is as follows: the holding sleeve is forced to pull downwards, the horizontal connecting rod connected with the holding sleeve moves downwards along the guide groove on the vertical arm along the main shaft, and in the process of moving downwards the main shaft, the elastic reset component deforms and stores energy. When the main shaft is pulled down to the limit position, the elastic reset component stops energy storage. The main shaft moves downwards to drive the lock catch to rotate around the hinged part of the lock catch and the C-shaped hook in an inverse clock manner, so that the lock tongue folds towards the C-shaped hook to lock the leg nails. When the holding sleeve is released, the main shaft moves upwards under the action of energy released by the elastic reset component and is reset by the horizontal connecting rod, meanwhile, the lock catch rotates clockwise by the upward movement and reset of the main shaft, and the lock tongue is far away from the C-shaped hook to open and loosen the foot nails. The anti-falling device can be skillfully integrated into climbing actions of an iron tower of an operator, two actions of opening and unlocking are omitted, the operation is simple, the anti-falling device can be ensured to firmly clamp the foot nails all the time in the climbing process, and the anti-falling device is safe and reliable to use. The structural design of the anti-falling device also provides convenience for the two steps of clamping the foot nails and releasing the foot nails, can complete actions in a homeopathic manner, and meets the requirements of simplicity, portability, flexibility and reliability and no influence on normal climbing of the iron tower.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present utility model.

Fig. 2 is an enlarged schematic view of fig. 1 in longitudinal section.

Fig. 3 is a schematic diagram of an axial azimuth structure of the present embodiment.

Fig. 4 is a schematic diagram of another axial direction structure of the present embodiment.

Detailed Description

As shown in fig. 1 to 4, the drop-down iron tower climbing anti-falling device disclosed in the embodiment comprises a C-shaped hanging ring 1, a vertical arm 2, a main shaft 3, a tension spring 4, a compression spring 5, a safety rope 6, a holding sleeve 7, a horizontal connecting rod 8, a hand guard 9 and a lock catch 10.

The cross section of the C-shaped hook 1 is in an inverted U shape.

The vertical arm 2 is a rectangular arm, and a vertical mounting hole is arranged in the vertical arm.

The main shaft 3 is divided into a top section, a middle section and a lower section by a first convex ring 31 and a second convex ring 32, the upper section of the top section is provided with a U-shaped groove 33 along the axial center surface, the middle section is sleeved with a tension spring 4, and the lower section is sleeved with a compression spring 5. The lower end of the main shaft is connected with a mounting rope 6.

The main shaft 3 is arranged in a vertical mounting hole of the vertical arm 2, a baffle ring is respectively arranged at the lower end of the vertical mounting hole corresponding to the compression spring 5 and the upper end of the tension spring 4, the upper end of the tension spring is fixed with the baffle ring, and the lower end of the compression spring is limited by the baffle ring.

A safety line 6 is connected to the lower end of the main shaft 3.

The first and

second collars

31 and 32 are provided with radial through holes, respectively, which are vertically arranged.

The holding sleeve 7 is sleeved outside the vertical arm 2 and is connected through two horizontal connecting rods 8 penetrating through the first convex ring 31 and the second convex ring 32.

The vertical arm 2 is provided with a guide slot for the up-and-down travel of the horizontal link 8.

The hand guard shell 9 comprises a vertical section 91, a semicircular section 92 connected with the lower end of the vertical section, and an inner inclined section 93 connected with the upper end of the semicircular section, wherein the upper end of the semicircular section is connected with the lower end of the vertical arm, the outer end of the inner inclined section is connected with the side wall of the side of the C-shaped hanging slot opening corresponding to the upper end of the vertical arm, and the semicircular section is provided with a safety rope mounting groove and a hanging ring GH. The safety rope passes through the hanging ring, and a safety buckle BXK is arranged at the position of the safety rope corresponding to the hanging ring.

The lock catch 10 comprises a main shaft articulated arm 101 and a lock tongue 102 at the outer end of the main shaft articulated arm, wherein a chute along the length direction of the main shaft articulated arm is arranged at the outer end section of the main shaft articulated arm, a round hole is arranged at the corner of the main shaft articulated arm and the lock tongue, and a pin roll XZ is arranged at the round hole.

When the lock catch 10 is installed, the main shaft hinge arm 101 is arranged in a U-shaped groove at the top of the main shaft 3, two ends of a connecting shaft LJZ penetrating through a chute on the main shaft hinge arm are fixedly connected with the main shaft 3, and two ends of a pin roll XZ penetrating through a round hole are fixedly connected with the C-shaped hook 1.

The working principle of the falling protector is as follows:

the holding sleeve is forced to pull downwards, the horizontal connecting rod connected with the holding sleeve moves downwards along the guide groove on the vertical arm along the main shaft, the tension spring is lengthened in the process of moving the main shaft downwards, and meanwhile the compression spring is extruded and shortened. When the first convex ring on the main shaft is contacted with the baffle ring on the inner wall of the vertical mounting hole, the tension spring and the pressure spring stop deforming. In the process of the downward movement of the main shaft, the main shaft drives the lock catch to rotate in a reverse clock mode around a pin shaft between the lock catch and the C-shaped hook through a connecting shaft at the upper end, so that the lock tongue is folded towards the C-shaped hook. When the holding sleeve is detached, the main shaft is upwards under the action of restoring force of the pressure spring and the tension spring, the holding sleeve is reset by the horizontal connecting rod, and meanwhile, the lock catch is rotated clockwise by upwards moving and resetting the main shaft, and the lock tongue is opened far away from the C-shaped hook.

In the actual use process, a tower climbing person grasps the sleeve by hand, hangs the C-shaped hook on the foot nail of the iron tower, and pulls the grasping sleeve downwards, so that the lock tongue and the C-shaped hook lock the foot nail together, at the moment, the handle cannot be pulled downwards any more, the tower climbing person climbs upwards by means of the force of pulling the pull-down handle and slowly unloads the force, the main shaft drives the handle and the lock catch to reset under the action of the two springs, the operator lifts the hand in order, the hook is taken down from the foot nail, and the next foot nail is hooked upwards, and the operation is repeated until the operator climbs to the top of the iron tower.

Once the person climbing the tower falls carelessly in the process of climbing the tower, the safety rope is separated from the safety buckle under the action of huge gravity, the main shaft is pulled downwards, and the lock catch and the C-shaped hook tightly clamp the iron tower foot nails, so that the effect of preventing the worker from falling is achieved.

The specific process of climbing the tower by using the falling protector is as follows:

s1: wearing a safety belt, completing an impact test, checking whether the pull-down type iron tower climbing anti-falling device can be pulled down and reset normally, and fixing the other end of the safety rope on a safety belt back ring worn along with the body;

s2: the hand-held drop-down type iron tower climbing anti-falling device is used for carrying out trial hanging and drop-down on the foot nail nearest to the ground, checking whether the hook and the lock catch can clamp the foot nail firmly or not, and confirming whether the length of the safety rope is proper or not;

s3: the hand guard shell of the falling protector is close to the iron tower foot nails by means of the pull-down iron tower climbing, and the falling protector is slid to the front lower side in a homeopathic manner, so that the hook is used for hanging the iron tower foot nails entirely;

s4: the lower handle is pulled downwards slowly to drive the lock catch to rotate, the foot nail is locked, an operator climbs upwards by means of the downward pulling force, and simultaneously the other hand-held falling protector is used for hooking the foot nail above the other side and pulling down to clamp;

s5: slowly discharging the downward pulling force of the first hand, and resetting the falling protector for climbing the pull-down iron tower; at the moment, an operator lifts hands upwards, the falling protector is separated from the foot nails and moves upwards in a homeopathic manner, and the step S3 is repeated;

s6: the two hands alternately reciprocate and continuously climb upwards until reaching a preset position; after the safety rope is tied, the drop-down iron tower climbing anti-falling device is placed into a bag, and the operation task is started.

The anti-falling device can be skillfully integrated into climbing actions of an iron tower of an operator, two actions of opening and unlocking are omitted, and the anti-falling device can be ensured to firmly clamp the foot nails all the time in the climbing process. The structural design of the anti-falling device also provides convenience for the two steps of clamping the foot nails and releasing the foot nails, can complete actions in a homeopathic manner, and meets the requirements of simplicity, portability, flexibility and reliability and no influence on normal climbing of the iron tower.

Claims

1. A drop-down iron tower climbing safety hook which is characterized in that: the anti-falling device comprises a C-shaped hook and a vertical arm connected with one side of the C-shaped hook, wherein a main shaft capable of elastically resetting is arranged in the vertical arm, a holding sleeve is fixedly sleeved outside the vertical arm through a horizontal connecting rod, a guide groove is formed in the position, corresponding to the horizontal connecting rod, of the vertical arm, and the top of the main shaft extends into the C-shaped hook to be hinged with a lock catch capable of rotating relative to the C-shaped hook; the lock catch and the C-shaped hook are locked together through the pull-down holding sleeve, and after the grip is unloaded, the main shaft elastically resets to drive the grip to reset and the lock catch to be opened.

2. The drop down tower climbing fall arrester of claim 1, wherein: the cross section shape of the C-shaped hook is an inverted U shape, the vertical arm is a rectangular arm, and a vertical mounting hole is formed in the vertical arm.

3. The drop down tower climbing fall arrestor of claim 2, characterized by: the main shaft is divided into a top section, a middle section and a lower section through a first convex ring and a second convex ring, the upper section of the top section is provided with a U-shaped groove along the axial center surface, the middle section is sleeved with a tension spring, the lower section is sleeved with the lower end of the tension spring, the lower end of the tension spring is fixedly connected with the top surface of the second convex ring, and the upper end of the compression spring is fixedly connected with the bottom surface of the second convex ring.

4. A drop down pylon climbing fall arrestor as claimed in claim 3, wherein: the first convex ring and the second convex ring are respectively provided with radial holes for installing the horizontal connecting rod, and the directions of the two radial holes are vertically arranged.

5. A drop down pylon climbing fall arrestor as claimed in claim 3, wherein: the inner wall of the vertical mounting hole is provided with a first baffle ring corresponding to the upper end of the tension spring, a second baffle ring is arranged corresponding to the lower end of the compression spring, the upper end of the tension spring is fixedly connected with the bottom surface of the first baffle ring, and the lower end of the compression spring is limited through the second baffle ring.

6. A drop down pylon climbing fall arrestor as claimed in claim 3, wherein: the lower end of the main shaft is connected with a safety rope.

7. A drop down pylon climbing fall arrestor as claimed in claim 3, wherein: the lock catch comprises a main shaft articulated arm and a lock tongue at the outer end of the main shaft articulated arm, a sliding groove along the length direction of the main shaft articulated arm is arranged at the inner end section of the main shaft articulated arm, a round hole is formed in the corner of the main shaft articulated arm and the lock tongue, and a pin shaft is arranged at the round hole.

8. The drop down tower climbing fall arrester of claim 7, wherein: the hinge arm is arranged in the U-shaped groove and is fixedly connected with the main shaft through a connecting shaft penetrating through the sliding groove, two ends of the pin shaft are fixedly connected with the C-shaped hook, and the lock catch can rotate around the pin shaft.

9. The drop down tower climbing fall arrester of claim 1, wherein: the falling protector further comprises a hand guard shell, the hand guard shell comprises a vertical section and a semicircular section, the lower end of the semicircular section is connected with the vertical section, the upper end of the semicircular section is connected with the lower end of the vertical arm, the outer end of the inner inclined section is connected with the side wall of the side of the C-shaped hook notch corresponding to the upper end of the vertical arm, and the semicircular section is provided with a safety rope mounting groove and a hanging ring.

10. The drop down tower climbing fall arrester of claim 9, wherein: the inner inclined section is provided with a yielding groove for movement of the lock tongue.