CN211513193U - Anti-falling protection system for tower climbing operation of power transmission line - Google Patents

Abstract

The utility model relates to a transmission line tower climbing operation anti-falling protection system, which comprises a safety rope used for the safety protection hook of an operator; the rope type bidirectional speed differentiator is arranged at the tower foot of the iron tower and used for bidirectional speed differentiation protection of the safety rope and forming an anti-falling self-locking protection point; the spiral anti-falling foot nails are arranged on the tower legs and the cross arm at intervals to form a high-falling-prevention suspension protection fulcrum and are used for preventing the pedal from falling off and fixing the safety rope when an operator grabs the pedal; the steering anti-falling foot nail is used for reducing the friction force borne by the safety rope during steering; the anti-falling self-locking device can be detachably sleeved on the safety rope, can freely run along the safety rope and can be braked and locked on the safety rope during rapid movement. The trackless safety protection technology is adopted, the whole tower is prevented from falling in all directions, the modification engineering quantity is small, the cost is low, and the large-scale popularization and application are facilitated.

Description

Anti-fall protection system for power transmission line tower operation

technical field

The utility model relates to the technical field of high-altitude operation of power transmission lines, in particular to an anti-falling protection system for power transmission lines climbing towers.

Background technique

my country's transmission lines have a long mileage and many towers. The safe operation of transmission lines requires a lot of maintenance work. Tower maintenance is one of the most important and dangerous tasks in line maintenance work.

Before 2000, due to technical limitations, almost all tower-mounted maintenance operations of transmission lines were carried out without safety protection measures. High-falling and sliding accidents occurred frequently, causing serious damage to operators, families and society. big loss.

After 2000, in order to solve the safety protection problem during the tower climbing operation, a tower anti-fall device was installed on the newly built UHV and EHV transmission lines in China. The device consists of a guide rail and a self-locking device. The guide rail is arranged along the working path of the main material of the tower and the climbing and moving operation of the operator. The guide rail is installed and connected to the tower as a fixed facility; the self-locking device is connected to the safety belt of the operator, which is a safety protection device carried by the tower operator. The self-locking device is detachable and is installed on the guide rail when in use. When the tower operator normally goes up and down the tower, the self-locking device can move freely on the guide rail; when the operator falls, the self-locking device will stop on the guide rail to prevent the occurrence of falling accidents.

However, the existing tower anti-fall device has the following problems:

1) It is necessary to install guide rails on the transmission tower, and the amount of engineering transformation is large;

2) The cost of procurement and installation is high, which is not conducive to large-scale installation and use on transmission lines;

3) The requirements for the installation accuracy and straightness of the guide rails are high, the installation is difficult, and the installation quality is not easy to control;

4) Due to the problems in the installation accuracy and straightness of the guide rails, the self-locking device is very easy to get stuck during operation, which brings inconvenience to the operators;

5) The anti-fall can only be carried out along the fixed track, and the full-scale anti-fall of the whole tower cannot be realized;

6) The old lines are already in live operation, and the installation and implementation are inconvenient, which is not conducive to the transformation of the old lines; subject to historical reasons and cost reasons, a large number of transmission lines constructed in the early stage and low-voltage transmission lines have not been installed similar to The safety protection device of this type of tower, especially the safety of the first boarding personnel, is often in a state of zero protection. Therefore, for such transmission lines and transmission towers without safety protection measures, the transmission line tower maintenance industry needs a safe and efficient anti-fall protection system.

Therefore, the inventor of the present invention proposes an anti-fall protection system for power transmission line tower climbing operation by virtue of years of experience and practice in related industries, so as to overcome the defects of the prior art.

Utility model content

The purpose of this utility model is to provide a transmission line tower climbing operation anti-fall protection system, to solve the problems of the existing large number of towers without safety protection measures for tower operation, difficult to transform and insufficient fall prevention of existing safety protection measures. The application adopts the trackless safety protection technology, the whole tower can be prevented from falling in all directions, the amount of reconstruction work is small, and the cost is low, which is convenient for wide-scale promotion and application.

The purpose of this utility model is achieved in this way, a transmission line tower operation anti-fall protection system, including,

Safety rope, which can be detachably fixed on the iron tower, used for the safety protection hook of the operator;

The rope-type two-way speed differential is arranged at the foot of the tower, and the safety rope is passed through the rope-type two-way speed differential. lock protection point;

Spiral anti-falling foot nails are arranged at intervals on the tower legs and the cross arm of the iron tower to form a suspension protection fulcrum to prevent high-falling. Away from the turning structure, the screw type anti-falling foot nail can be used for the anti-falling fixation of the operator's hand-holding pedal and the safety rope;

Steering anti-falling foot nails are arranged on the cross arm of the iron tower or in the horizontal working surface that needs to be horizontally indexed. The steering anti-falling foot nail is provided with a steering structure, and the safety rope is passed through the steering structure to change the direction. , the steering structure is used to reduce the frictional force when the safety rope is turned;

The anti-falling self-locking device can be detachably set on the safety rope, one end of the anti-falling self-locking device is connected with the safety belt of the operator, and the anti-falling self-locking device can run freely along the safety rope and can move rapidly When the brake is locked on the safety rope.

In a preferred embodiment of the present invention, the helical anti-fall foot nail includes a first climbing part, one end of the first climbing part is connected to a first connecting part, and the first connecting part connects the first climbing part to the first connecting part. A climbing part is horizontally connected to the iron tower; the other end of the first climbing part spirals inward clockwise to form the turning structure, the safety rope can be wound into the turning structure clockwise, and the safety rope can be counterclockwise Out of the curved structure.

In a preferred embodiment of the present invention, the first connecting portion is connected to the tower leg of the iron tower, and the other end of the first climbing portion is inwardly and upwardly spiraled clockwise to form the turning structure.

In a preferred embodiment of the present invention, the first connecting portion is connected to the cross arm of the iron tower, and the bending structure is arranged vertically.

In a preferred embodiment of the present invention, the helical anti-falling foot nail includes a first climbing part, and one end of the first climbing part close to the iron tower spirals inward and counterclockwise to form the bending structure, so One end of the turning structure close to the iron tower is connected to a first connecting part, the first connecting part connects the first climbing part to the iron tower horizontally, the safety rope can be wound into the turning structure clockwise, and the safety rope can Go around counterclockwise to get out of the turn structure.

In a preferred embodiment of the present invention, the first connecting portion is connected to the tower leg of the iron tower, and one end of the first climbing portion is inwardly and downwardly spiraled counterclockwise to form the bending structure.

In a preferred embodiment of the present invention, the first connecting portion is connected to the cross arm of the iron tower, and the bending structure is arranged vertically.

In a preferred embodiment of the present invention, the steering anti-falling foot nail includes a horizontal second climbing part whose one end can be connected to the iron tower, and the other end of the second climbing part is provided with the steering structure, so The steering structure includes a rotatable fixed wheel and a rotatable and slidable moving wheel, and a sealed space can be formed between the fixed wheel and the moving wheel for the safety rope to pass through.

In a preferred embodiment of the present invention, the steering structure includes a connecting plate, the connecting plate is perpendicular to the axial direction of the second climbing portion, and the fixed wheel is hinged on one side of the connecting plate In the lower part, the central axis of the fixed wheel is arranged in parallel with the central axis of the second climbing part; the other side of the connecting plate is provided with a sliding slot hole along the vertical direction, and the moving wheel is hinged to be able to move up and down. in the sliding slot hole;

The moving wheel moves upward, and a gap larger than the diameter of the safety rope is created between the moving wheel and the fixed wheel for the safety rope to enter and exit; when the moving wheel can fall to the lowest point of the stroke under the action of gravity, the moving The central axis of the wheel and the central axis of the fixed wheel are located on the same horizontal plane, and the sealed space is formed between the moving wheel and the fixed wheel for the safety rope to pass through.

From the above, the anti-fall protection system for power transmission line tower climbing operation provided by the utility model has the following beneficial effects:

Aiming at a large number of old power transmission towers, the utility model proposes an all-round and whole-process anti-fall protection measure for tower climbing operations; the utility model adopts a trackless safety protection technology for the anti-fall protection system for power transmission line tower climbing operations. , The technical measures do not rely on the fixed guide rail, the utility model utilizes the locking principle of the rope-type two-way speed differential, and uses the screw type anti-falling foot nails, steering anti-falling foot nails, safety ropes and anti-falling self-locking devices and other components. As the suspension fulcrum, the screw-type anti-fall foot nails can complete the anti-fall protection for the first boarding operator, and the subsequent tower boarding operators can use the anti-fall self-locking device to perform the tower climbing operation through the safety rope. The anti-fall self-locking device provides anti-fall protection for the subsequent tower climbers, and the operator moves up and down more smoothly, avoiding the movement jam caused by the insufficient installation accuracy of the guide rail;

In the anti-falling protection system of the transmission line tower operation of the utility model, both the tower legs and the cross arm are provided with screw-type anti-falling foot nails as the fulcrum of the suspension protection, which can realize the all-round anti-falling of the whole tower;

When the utility model is used for the existing power transmission tower, the amount of reconstruction works is small, and the utility model can be put into use only after simple reconstruction;

The anti-fall protection system for power transmission line tower climbing operation of the utility model has high versatility of key equipment (such as rope-type two-way speed differentials, safety ropes, etc.) The investment cost is low, and it is convenient for wide-scale promotion and application.

Description of drawings

The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. in:

FIG. 1 is a schematic diagram of the utility model of the anti-falling protection system for power transmission line climbing tower operation applied to a single-circuit straight tower.

FIG. 2 is a schematic diagram of the utility model of the transmission line tower climbing operation anti-fall protection system applied to a single-circuit tensile tower.

FIG. 3 is a schematic diagram of the utility model for the anti-falling protection system of the transmission line tower climbing operation for the double-circuit straight tower.

FIG. 4 is a schematic diagram of the utility model for the anti-fall protection system for power transmission line tower climbing operation applied to a double-circuit tensile tower.

FIG. 5 is a schematic diagram of the twisting structure of the screw type anti-falling foot nail of the present invention when it is close to one side of the iron tower.

FIG. 6 is a schematic diagram of the twisting structure of the screw type anti-falling foot nail of the present invention when it is away from one side of the iron tower.

Figure 7: It is the view from the direction A in Figure 6.

FIG. 8 is a side view of the screw type anti-falling foot nail of the present invention installed on the cross arm.

FIG. 9 is a top view of the steering anti-falling foot nail of the present invention.

Fig. 10 is a side view of the steering wheel of the utility model when the moving wheel is at the lowest point.

Figure 11 is a side view of the steering wheel of the utility model when the moving wheel moves upward.

Fig. 12 is a schematic diagram of the rope type two-way speed differential of the present invention.

In the picture:

100. Anti-fall protection system for power transmission line tower climbing operation;

1. Rope type two-way speed differential;

11. The first opening; 12. The second opening; 13. The differential wheel;

2. Spiral anti-fall foot nails;

21. Turning structure; 22. The first climbing part; 23. The first connecting part;

3. Steering anti-fall foot nails;

31, the second climbing part; 32, the fixed wheel; 33, the moving wheel; 34, the connecting plate; 341, the sliding slot;

9. Iron tower;

91, tower legs; 92, cross arm.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention will now be described with reference to the accompanying drawings.

The specific embodiments of the present invention described herein are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible deformations based on the present invention, and these should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication between two components, it can be directly connected, or it can be indirectly connected through an intermediate medium, For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the present application are for the purpose of describing particular embodiments only, and are not intended to limit the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in FIGS. 1 to 12 , the present invention provides a fall protection system 100 for power transmission line tower climbing operation, including:

Safety ropes, which can be detachably fixed on the iron tower 9, and are used for safety protection hooks for operators;

The rope type two-way speed differential 1 (as shown in Figure 12) is arranged at the foot of the iron tower 9, the safety rope is passed through the rope type two-way speed differential (the prior art), and the rope type two-way speed differential 1 is used to The two-way speed difference protection of the safety rope forms an anti-fall self-locking protection point; the rope-type two-way speed difference 1 can be used with any safety rope that meets the diameter requirements, and the working radius is not limited (the same length as the rope);

When the rope type two-way differential 1 is in use, the safety rope enters from the first opening 11 at one end of the rope type two-way differential 1, bypasses the speed differential wheel 13 in the rope type two-way differential Through the opening 12, the speed difference protection of the safety rope can be completed. When the safety rope moves inside the rope-type two-way differential 1 at a relatively stable speed, the rope-type two-way differential 1 does not lock, and the safety rope can move smoothly; when the safety rope moves rapidly inside the differential , the rope type two-way speed differential 1 will be locked immediately, and the safety rope cannot move in the rope type two-way speed differential 1 at this time. The rope-type two-way speed differential 1 has a two-way self-locking function. When the safety rope is worn, it is not necessary to consider the direction of the rope. After the safety rope is passed, overspeed in any direction can generate locking protection.

Spiral anti-falling foot nails 2 are arranged at intervals on the tower legs 91 and the cross arm 92 of the iron tower 9 to form a suspension protection fulcrum against high-falling. It can go into or out of the turning structure 21, and the screw type anti-fall foot nail 2 can be used for the operator to hold the pedal and the safety rope from falling off; the screw type anti-fall foot nail 2 takes into account the convenience of the safety rope and the Reliability against dislodgement.

The steering anti-falling foot nail 3 is arranged on the cross arm of the iron tower 9 or in the horizontal working surface that needs to be horizontally shifted. The steering structure is provided on the steering anti-falling foot nail 3, and the safety rope is passed through the steering structure to change the direction. The steering structure It is used to reduce the friction force when the safety rope turns;

The anti-falling self-locking device can be detachably fitted on the safety rope (can be installed or dismantled at any position of the safety rope), one end of the anti-falling self-locking device and the safety belt of the operator (every tower operator needs to Wearing, prior art) connection, the anti-fall self-locking device can run freely along the safety rope and can be braked and locked on the safety rope during rapid movement. During normal movement, the anti-fall self-locking device can run freely on the safety rope; during rapid movement, frictional braking is generated between the anti-falling self-locking device and the safety rope.

Aiming at a large number of old power transmission towers, the utility model proposes an all-round and whole-process anti-fall protection measure for tower climbing operations; the utility model adopts a trackless safety protection technology for the anti-fall protection system for power transmission line tower climbing operations. , The technical measures do not rely on the fixed guide rail, the utility model utilizes the locking principle of the rope-type two-way speed differential, and uses the screw type anti-falling foot nails, steering anti-falling foot nails, safety ropes and anti-falling self-locking devices and other components. As the suspension fulcrum, the screw-type anti-fall foot nails can complete the anti-fall protection for the first boarding operator, and the subsequent tower boarding operators can use the anti-fall self-locking device to perform the tower climbing operation through the safety rope. The anti-fall self-locking device provides anti-fall protection for the subsequent tower climbers, and the operator moves up and down more smoothly, avoiding the movement jam caused by the insufficient installation accuracy of the guide rail;

In the anti-falling protection system of the transmission line tower operation of the utility model, both the tower legs and the cross arm are provided with screw-type anti-falling foot nails as the fulcrum of the suspension protection, which can realize the all-round anti-falling of the whole tower;

When the utility model is used for the existing power transmission tower, the amount of reconstruction works is small, and the utility model can be put into use only after simple reconstruction;

The anti-fall protection system for power transmission line tower climbing operation of the utility model has high versatility of key equipment (such as rope type two-way speed differential, safety rope, etc.), and one set of equipment can be applied to all iron towers, such as single-circuit straight tower 1), single-circuit tension tower (Fig. 2), double-circuit linear tower (Fig. 3), double-circuit tension tower (Fig. 4), which reduces the cost of use, and the fixed investment cost is low, which is convenient for wide-scale promotion and application.

Further, the screw type anti-falling foot nail 2 can meet the requirements of the operator to grasp the foot pedal up and down the tower, and also can prevent and fix the safety rope, and the safety rope is very convenient to go in and out, and the bending structure can be set far away from the tower. One side of the iron tower can also be arranged on the side close to the iron tower.

As shown in FIG. 6 , in a specific embodiment of the present invention, the turning structure 21 is arranged on the side of the first climbing part 22 away from the iron tower 9 : the screw type anti-fall foot nail 2 includes the first climbing part 22 , the first climbing part 22 is A climbing part 22 is provided with anti-skid measures such as knurling and rubber pads; one end of the first climbing part 22 is connected to the first connecting part 23, and the first connecting part 23 connects the first climbing part 22 to the iron tower horizontally. 23 can be in the form of a thread + nut, or a clamp, as well as other structures and forms that can be connected and installed with the iron tower; the other end of the first climbing part 22 is spiraled inward clockwise to form a turning structure 21, and the safety rope The safety rope can be wound into the turning structure 21 clockwise, and the safety rope can be wound out of the turning structure 21 counterclockwise.

When the first connecting part 23 is connected to the tower leg 91 of the iron tower, the other end of the first climbing part 22 spirals inward and upward clockwise to form a turning structure 21 , preferably, as shown in FIG. 7 , the turning structure 21 It is advisable to maintain an included angle of about 30° with the horizontal plane. When the first connecting part 23 is connected to the cross arm 92 of the iron tower, as shown in FIG. 8 , the turning structure 21 is arranged vertically, that is, the spiral type anti-falling foot nail 2 maintains an included angle of 90° with the horizontal plane.

As shown in FIG. 5, in another specific embodiment of the present utility model, the turning structure 21 is arranged on the side of the first climbing part 22 close to the iron tower 9: the screw type anti-fall foot nail 2 includes the first climbing part 22, The first climbing part 22 is provided with anti-skid measures such as knurling and rubber pads; the end of the first climbing part 22 close to the iron tower 9 is spiraled inward and counterclockwise to form a turning structure 21, and the end of the turning structure 21 close to the iron tower is connected to the first connection part 23, the first connecting part 23 connects the first climbing part 22 to the iron tower 9 horizontally, the first connecting part 23 can be in the form of a thread + nut, or a clamp, and other structures that can be connected and installed with the iron tower and form; the safety rope can be wound into the turning structure 21 clockwise, and the safety rope can be wound out of the turning structure 21 counterclockwise.

When the first connecting portion 23 is connected to the tower leg 91 of the iron tower, one end of the first climbing portion 22 is inwardly and downwardly spiraled counterclockwise to form a turning structure 21 . Preferably, the turning structure 21 should maintain an included angle of about 30° with the horizontal plane. When the first connecting part 23 is connected to the cross arm 92 of the iron tower, the turning structure 21 is arranged vertically, that is, the helical anti-falling foot nail 2 maintains an included angle of 90° with the horizontal plane.

Further, the steering anti-falling foot nail 3 comprises a horizontal second climbing part 31 whose one end can be connected to the iron tower, and the other end of the second climbing part 31 is provided with a steering structure, and the steering structure comprises a rotatable fixed wheel 32 and a rotatable and rotatable The sliding moving wheel 33, the fixed wheel 32 and the moving wheel 33 can form a sealed space for the safety rope to pass through, and the moving wheel 33 can move to create a gap for the safety rope to wind in and out. The steering structure is composed of a rotatable wheel-shaped structure, and rolling friction occurs between the safety rope and the steering structure, which can effectively reduce the friction between the safety rope and the foot nails and reduce the labor intensity of the operator.

When the safety rope is turned from the tower leg to the cross arm, the steering resistance is relatively large, which can easily cause the movement of the safety rope to be blocked. At this time, the following steering anti-fall foot nail structure can be used: At this time, as shown in Figure 9 , the steering structure includes a connecting plate 34, the connecting plate 34 is arranged perpendicular to the axial direction of the second climbing part 31, the fixed wheel 32 is hinged to the lower part of one side of the connecting plate 34, the central axis of the fixed wheel 32 is connected to the center of the second climbing part 31 The shafts are arranged in parallel; the other side of the connecting plate 34 is provided with a sliding slot hole 341 along the vertical direction, and the moving wheel 33 is hinged in the sliding slot hole 341 so as to be able to move up and down;

As shown in FIG. 11 , the moving wheel 33 moves upward, and a gap larger than the diameter of the safety rope is created between the moving wheel 33 and the fixed wheel 32 for the safety rope to enter and exit; as shown in FIG. 10 , the moving wheel 33 can fall under the action of gravity to At the lowest point of the stroke (this state is its free state), the central axis of the moving wheel 33 and the central axis of the fixed wheel 32 are on the same horizontal plane, and a sealed space is formed between the moving wheel 33 and the fixed wheel 32 for the safety rope to pass through, After the moving wheel 33 falls, the safety rope can no longer enter or come out.

When the safety rope is turned horizontally on the cross arm, the steering structure on the steering anti-fall foot nail 3 still adopts the wheel-shaped structure for steering. There is rolling friction between them, which minimizes the friction force and facilitates the operation of the safety rope.

The anti-fall protection method of the utility model using the anti-fall protection system for power transmission line climbing tower operation comprises the following steps:

Step a, according to the design requirements, install the screw type anti-falling foot nails 2 on the tower legs 91 and the cross arm 92 of the iron tower 9, and install the steering anti-falling foot nails 3 on the cross arm 92 of the iron tower;

Specifically, when refitting the tower legs of the existing iron tower with the foot nails, remove the foot nails (existing common foot nails) on the tower legs to replace them with spiral anti-falling foot nails. The arrangement can be in various forms, see Figures 1 to 4 for details; the replacement principle is based on the foot nails on the same vertical line, and the spacing is about 1 to 2m; as shown in Figure 6, the turning structure 21 is arranged on the first When the climbing part 22 is away from one side of the iron tower 9, the first connecting part 23 is connected to the tower leg 91 of the iron tower, and the other end of the first climbing part 22 is inward and upward clockwise to form a turning structure 21, preferably, The turning structure 21 should maintain an included angle of about 30° with the horizontal plane; when the turning structure 21 is arranged on the side of the first climbing part 22 close to the iron tower 9, one end of the first climbing part 22 is formed by spiraling inward and downward counterclockwise The turning structure 21, preferably, the turning structure 21 should maintain an included angle of about 30° with the horizontal plane.

When refitting the cross arm of the existing iron tower with the foot nails, remove some of the foot nails (existing common foot nails) of the cross arm (the replacement height should be close to the chest), and replace them with screw type anti-falling foot nails 2 , during installation, the bending structure 21 is arranged vertically, that is, the spiral anti-falling foot nail 2 maintains an included angle of 90° with the horizontal plane. After the installation is completed, the operator can reach the position of the horizontal working surface through the screw type anti-falling foot nails 2 set horizontally at the cross arm. The other part of the feet on the cross arm is replaced with steering anti-falling feet 3. After the installation is completed, the operator can smoothly reach the working point on any plane of the tower body to which the steering anti-falling feet 3 belong; descending work is required At the time, the lowering operation can be carried out through any turning anti-falling foot nail 3 or screw type anti-falling foot nail 2 as the upper protection fulcrum, so that the operator can be protected to reach any position of the tower body to carry out the operation.

Step b. Before climbing the tower, anchor the rope-type two-way speed differential 1 at the foot of the tower 9, connect the safety rope through the rope-type two-way speed differential 1 and connect it with the safety belt on the operator's body, and check and confirm that it is safe;

The rope-type two-way speed differential 1 is anchored at the foot of the tower 9, and the anti-fall self-locking protection point is moved from the upper tower to the lower tower, which is more conducive to the timeliness of safety protection;

After the components are connected before climbing the tower, an impact test is carried out to check the correctness of the connection and the reliability of each component.

Step c. Operation on the tower: It should be noted that the operators who go to the tower in different orders have different operations on the tower: the operators on the tower are divided into the first boarding, the second and the follow-up operators;

For the first boarding personnel, the rope-type two-way speed differential 1 and the safety rope are the basic anti-fall protection. At the same time, during the process of climbing the tower, a suspension protection fulcrum is created. The operation is as follows: the first boarding operator carries the safety rope and holds the tower with his hands and feet The spiral anti-falling foot nails 2 on the legs climb the tower, and at the same time, the safety rope is wound into the bending structure 21 of the spiral anti-falling foot nails 2 in turn to form a suspension protection fulcrum against high-fall; , hang the seat belt, and anchor the safety rope on the tower (anchor the safety rope on the main material of the appropriate height required for the tower operation);

The second operator uses the safety rope to use the anti-fall self-locking device (rope) to climb the tower, and the anti-fall self-locking device (rope) provides anti-fall protection for the second operator: the second operator first The anti-falling self-locking device is set on the safety rope, and the spiral anti-falling foot nails on the tower legs are grasped by the hands to climb the tower. Falling nails; after the second operator reaches the top, an unobstructed safety rope passage is formed;

Follow-up operators use the safety rope channel and anti-fall self-locking device (rope) to perform tower climbing operations, and the anti-fall self-locking device (rope) provides anti-fall protection for them;

Step d, cross-arm operation:

Work horizontally and horizontally on the cross arm of the iron tower, and pass the safety rope through the steering structure of the steering anti-fall foot nail to realize steering. Anti-falling foot nails; when it needs to be shifted to the opposite side of the legs of the foot nails, it can also achieve "no resistance" steering by turning the anti-falling foot nails to reach any operating point on the tower head;

When it is necessary to work under the cross arm of the iron tower (that is, when it needs to be lowered), first use the horizontally arranged steering anti-falling foot nails or screw-type anti-falling foot nails to transfer to the top of the operating point, and use the steering anti-falling foot nails or screw-type anti-falling foot nails. The anti-falling foot nail is used as the vertical protection hanging point above, and then descends to the operating point for operation; this method enables the operator to reach any operating surface of the tower body without losing protection;

When returning from the horizontal operation, wind the safety rope out of the spiral anti-falling foot nail and steering anti-falling foot nail on the cross arm in turn. The impact injury caused by the excessive drop height difference to the operator;

Step e, tower lowering operation: it should be noted that the operators who lower the tower in different sequences have different lowering operations: the operators who lower the tower are divided into other operators, the penultimate and the last;

Except for the penultimate and last operator who goes down the tower, all other operators go down the tower through the safety rope channel and the anti-fall self-locking device; Protect;

When the penultimate lower tower operator goes down the tower, he also goes down the tower through the safety rope channel and the anti-fall self-locking device. It is wound into the bending structure of the spiral anti-falling foot nails on the tower legs in turn to provide a safety protection fulcrum for the last operator who goes down the tower;

The last operator goes down the tower with a safety rope, and the screw type anti-falling foot nails 2 on the tower legs provide fulcrum protection for him during the process of going down the tower;

Step f. After the last operator gets off the tower, the recovery of the safety rope is completed.

Specifically, there are generally two methods for the recovery of safety ropes:

Method 1: The last operator, from top to bottom, winds the safety rope out of the spiral anti-fall foot nail 2 in turn, and the ground personnel cooperate to tighten the safety rope, and the safety rope is recovered when it goes down to the ground.

Method 2: The last operator takes the spiral anti-falling foot nail 2 on the tower leg as a protective fulcrum, and takes the safety rope to the ground in reverse, unfastens the safety rope, and follows the curved structure of the spiral anti-falling foot nail Recycle.

In the anti-falling protection method of the present utility model, the anti-falling protection of workers has differences:

a. Anti-fall protection for the first boarding operator and the last operator to descend the tower: the first boarding operator and the last operator to descend the tower must cooperate closely with the screw type anti-fall feet during the process of going up and down the tower , once the person falls, the screw type anti-fall foot nail can provide a fulcrum for the falling person, and the fulcrum can change the movement direction of the safety rope, so that the operator can transmit the falling speed through the safety rope to the rope-type two-way speed differential during the fall process. The rope-type two-way speed differential locks after sensing the speed change of the safety rope, so as to achieve the purpose of preventing the occurrence of falling accidents. At this time, the fulcrum provides support for the falling process.

b. Anti-fall protection for the rest of the tower climbers: For the rest of the personnel to get on and off the tower, they are provided with anti-fall protection through "rope + anti-fall self-locking device (rope)".

From the above, the anti-fall protection system for power transmission line tower climbing operation provided by the utility model has the following beneficial effects:

Aiming at a large number of old power transmission towers, the utility model proposes an all-round and whole-process anti-fall protection measure for tower climbing operations; the utility model adopts a trackless safety protection technology for the anti-fall protection system for power transmission line tower climbing operations. , The technical measures do not rely on the fixed guide rail, the utility model utilizes the locking principle of the rope-type two-way speed differential, and uses the screw type anti-falling foot nails, steering anti-falling foot nails, safety ropes and anti-falling self-locking devices and other components. As the suspension fulcrum, the screw-type anti-fall foot nails can complete the anti-fall protection for the first boarding operator, and the subsequent tower boarding operators can use the anti-fall self-locking device to perform the tower climbing operation through the safety rope. The anti-fall self-locking device provides anti-fall protection for the subsequent tower climbers, and the operator moves up and down more smoothly, avoiding the movement jam caused by the insufficient installation accuracy of the guide rail;

In the anti-falling protection system of the transmission line tower operation of the utility model, both the tower legs and the cross arm are provided with screw-type anti-falling foot nails as the fulcrum of the suspension protection, which can realize the all-round anti-falling of the whole tower;

When the utility model is used for the existing power transmission tower, the amount of reconstruction works is small, and the utility model can be put into use only after simple reconstruction;

The anti-fall protection system for power transmission line tower climbing operation of the utility model has high versatility of key equipment (such as rope-type two-way speed differentials, safety ropes, etc.) The investment cost is low, and it is convenient for wide-scale promotion and application.

The above descriptions are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the protection scope of the present invention.

Claims (9)

1. a transmission line tower operation anti-fall protection system, is characterized in that, comprises, Safety rope, which can be detachably fixed on the iron tower, used for the safety protection hook of the operator; The rope-type two-way speed differential is arranged at the foot of the tower, and the safety rope is passed through the rope-type two-way speed differential. lock protection point; Spiral anti-falling foot nails are arranged at intervals on the tower legs and the cross arm of the iron tower to form a suspension protection fulcrum to prevent high-falling. Away from the turning structure, the screw type anti-falling foot nail can be used for the anti-falling fixation of the operator's hand-holding pedal and the safety rope; Steering anti-falling foot nails are arranged on the cross arm of the iron tower or in the horizontal working surface that needs to be horizontally indexed. The steering anti-falling foot nail is provided with a steering structure, and the safety rope is passed through the steering structure to change the direction. , the steering structure is used to reduce the frictional force when the safety rope is turned; The anti-falling self-locking device can be detachably set on the safety rope, one end of the anti-falling self-locking device is connected with the safety belt of the operator, and the anti-falling self-locking device can run freely along the safety rope and can move rapidly When the brake is locked on the safety rope. 2 . The anti-fall protection system for power transmission line tower climbing operations according to claim 1 , wherein the helical anti-fall foot nail comprises a first climbing part, and one end of the first climbing part is connected to the first connecting part. 3 . , the first connecting part connects the first climbing part to the iron tower horizontally; the other end of the first climbing part is spiraled inward clockwise to form the bending structure, and the safety rope can be wound clockwise into the turning structure, and the safety rope can go out of the turning structure counterclockwise. 3 . The anti-fall protection system for power transmission line tower climbing operation according to claim 2 , wherein the first connecting part is connected to the tower leg of the iron tower, and the other end of the first climbing part faces inward and upward. 4 . A clockwise spiral constitutes the bending structure. 4 . The anti-fall protection system for power transmission line tower climbing operation according to claim 2 , wherein the first connecting part is connected to the cross arm of the iron tower, and the bending structure is arranged vertically. 5 . 5 . The anti-fall protection system for power transmission line tower climbing operation according to claim 1 , wherein the screw-type anti-fall foot nail comprises a first climbing part, and an end of the first climbing part close to the iron tower is inwardly reversed. 6 . The turning structure is formed by a spiral of the hour hand, and one end of the turning structure close to the iron tower is connected to the first connecting part, and the first connecting part connects the first climbing part to the iron tower horizontally, and the safety rope can smoothly Clockwise winds into the turning structure, and the safety rope can wind counterclockwise out of the turning structure. 6 . The anti-fall protection system for power transmission line tower climbing operation according to claim 5 , wherein the first connecting part is connected to the tower leg of the iron tower, and one end of the first climbing part faces inward and downward. 7 . One counterclockwise spiral constitutes the bending structure. 7 . The anti-fall protection system for power transmission line tower climbing operation according to claim 5 , wherein the first connecting part is connected to the cross arm of the iron tower, and the bending structure is arranged vertically. 8 . 8 . The anti-falling protection system for power transmission line tower climbing operation according to claim 1 , wherein the steering anti-falling foot nail comprises a horizontal second climbing part whose one end can be connected to the iron tower, and the second climbing part can be connected to the iron tower. The steering structure is provided at the other end of the part, and the steering structure includes a rotatable fixed wheel and a rotatable and slidable moving wheel, and a sealed space can be formed between the fixed wheel and the moving wheel for safety rope steering pass. 9 . The anti-fall protection system for power transmission line tower climbing operation according to claim 8 , wherein the steering structure comprises a connecting plate, and the connecting plate is arranged perpendicular to the axial direction of the second climbing part, and the The fixed wheel is hinged on the lower part of one side of the connecting plate, the central axis of the fixed wheel is arranged in parallel with the central axis of the second climbing part; the other side of the connecting plate is provided with a sliding slot hole along the vertical direction, The moving wheel is hinged in the sliding slot hole so as to be able to move up and down; The moving wheel moves upward, and a gap larger than the diameter of the safety rope is created between the moving wheel and the fixed wheel for the safety rope to enter and exit; when the moving wheel can fall to the lowest point of the stroke under the action of gravity, the moving The central axis of the wheel and the central axis of the fixed wheel are located on the same horizontal plane, and the sealed space is formed between the moving wheel and the fixed wheel for the safety rope to pass through.

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