CN218581549U - Magnetic type foldable cable terminal maintenance ladder - Google Patents

Abstract

The utility model discloses a formula collapsible cable terminal access ladder is inhaled to magnetism, inhale the base including cat ladder main part, triangle side ladder, safe tightener, magnetism, the triangle side ladder is respectively installed to cat ladder main part both sides, and magnetism is inhaled the base and is fixed on cat ladder main part and triangle side ladder, and safe tightener is installed in the cat ladder main part. The utility model solves the potential safety hazard brought by the cable maintenance field operation personnel directly climbing the composite sleeve pipe due to the lack of a climbing tool on one hand, and provides reliable safety guarantee for maintenance operation; folded cascade cable terminal overhauls cat ladder size and cable terminal steel bottom plate size fit good on the one hand in addition, inhales the base through switch one key control magnetism for the maintenance ladder firmly fixes on the steel base, has accelerated the cable maintenance especially salvagees efficiency.

Description

Magnetic type foldable cable terminal maintenance ladder

Technical Field

The utility model relates to an electric power overhauls technical field, especially relates to a collapsible cable terminal of formula maintenance ladder is inhaled to magnetism.

Background

With the rapid development of economic society in China, the electricity consumption of society rises year by year, and an electric power system is continuously building and modifying an electric transmission line. However, with the large-scale use of cables, the number of cable terminals is increasing, power cables and channel maintenance regulations and power cable line test regulations are regulated, the current main insulation and voltage resistance test of the cables needs to dismantle the drainage wire at the top of the terminal, and manual climbing of the cables or use of a bucket arm vehicle is needed at an operation point. Therefore, the current main operation means cannot meet the increasing requirements of the main insulation and voltage resistance test of the cable. In order to reduce cable main insulation withstand voltage test activity duration and operation scope, guarantee personnel's safety and equipment safety, need develop a safe and reliable convenient cable termination climbing device of economy urgently, satisfy the work needs of electric power construction and operation and maintenance unit.

Chinese patent document CN202021248830.3 discloses a climbing device for dismounting and mounting a lead of a low-voltage sleeve of an extra-high voltage transformer. This patent is used for fixing and makes things convenient for the maintainer climbing and provides the support for maintainer dismouting lead wire on the sleeve pipe rising seat, and it includes: a support member including a first vertical support portion, a second vertical support portion, and a plurality of horizontal support portions vertically disposed between the first vertical support portion and the second vertical support portion; the stabilizing part comprises a first stabilizing part and a second stabilizing part, and the first stabilizing part and the second stabilizing part are respectively and fixedly connected with the first vertical supporting part and the second vertical supporting part in an inclined manner; and the number of the fixing pieces is four, and each fixing piece is fixedly connected with the bottoms of the first vertical supporting part, the second vertical supporting part, the first stabilizing part and the second stabilizing part respectively and used for fixing the supporting piece and the stabilizing piece on the sleeve lifting seat. However, the position near the cable terminal is narrow, the ladder is not placed in the position, the fixing mode cannot be firmly fixed near the cable terminal, and safety devices are not arranged on the ladder, so that safe operation cannot be realized.

Disclosure of Invention

The utility model discloses mainly solve original overhaul ladder and can't stably lay near cable termination, do not have safety protection measure's technical problem, provide a formula collapsible cable termination overhaul ladder is inhaled to magnetism, the ladder can make things convenient for carrying of ladder from the folding hinge in area, install spherical knot and cooperate with the safety belt in overhaul ladder both sides and ensure that the safety belt is firm to be fixed on the ladder and can diversely remove, it inhales the base and can guarantee that the overhaul ladder can stably adsorb on cable termination to install magnetism on the base, ensure staff's personal safety.

The above technical problem of the utility model is mainly solved through the following technical scheme: the utility model discloses a base is inhaled to cat ladder main part, triangle side ladder, safe tightener, magnetism, triangle side ladder is respectively installed to cat ladder main part both sides, magnetism is inhaled the base and is fixed in cat ladder main part and triangle side ladder, safe tightener is installed in the cat ladder main part. The utility model discloses main part ladder structure can fold the workman of being convenient for in daily electric power overhauls the high tower at convenient band cable terminal. Abandon traditional buckle formula fixed, the utility model discloses install magnetism on the bottom of overhaul ladder cylinder and inhale the base, borrow this firmly will overhaul the ladder and lock in the metal base at cable termination to this ensures the security of overhaul ladder.

Preferably, the ladder stand main body comprises a rectangular frame and a spherical buckle, a through hole is formed in the bottom end of the rectangular frame, and the spherical buckle is arranged at the top end of the side face of the rectangular frame. The spherical buckle arranged on the side surface of the ladder stand main body can fix the safety tightener, and meanwhile, the spherical structure can also enable the movable range of the safety tightener to be wider.

Preferably, the ball-shaped buckle comprises a rotating shaft and a ball-shaped buckle main body, the ball-shaped buckle main body is connected with the rotating shaft, and the rotating shaft is fixedly arranged on the side face of the rectangular frame. The center of the round shaft of the ball button main body coincides with the rotating shaft, and the ball button main body rotates along with the rotation of the rotating shaft.

Preferably, the triangle side ladder comprises an inclined plane and a vertical plane, a hinge is arranged on the vertical plane of the triangle side ladder to connect the ladder stand main body with the triangle side ladder, and a through hole is formed in the bottom end of the triangle side ladder. The triangle side ladders are fixed on two sides of the ladder stand main body through hinges, when the ladder stand needs to be used, the triangle side ladders are turned over and bent into a needed shape, and then other steps are continuously overhauled.

Preferably, the magnetic base is respectively installed on the bottom surface of the ladder stand main body and the triangular side ladder, and the magnetic base is fixedly connected with the ladder stand main body and the triangular side ladder through the through holes. Through holes are dug in the lower sides of the ladder main body and the bottom surface of the triangular side ladder, and the magnetic attraction base is fixedly connected with the bottom surface of the maintenance ladder through bolts and nuts.

Preferably, the included angle between the ladder main body and the triangular side ladders on two sides is less than 135 degrees. According to the force application range of an actual operator, the triangular side kick of the overhaul ladder and the ladder main body are placed into a proper angle according to the requirement of an actual operation field.

Preferably, the safety tightener comprises a tightening belt and a ball joint, the ball joint is fixed with the tightening belt, and the ball joint is in fit connection with a ball buckle on the ladder stand main body. The spherical joint on the safety tightener can be embedded into the spherical buckle fixed on the ladder stand main body, and the spherical joint and the spherical buckle are connected to give consideration to the fixed strength and the movable range.

The beneficial effects of the utility model are that: the development of folded cascade cable terminal overhauls cat ladder is applicable to the cable terminal maintenance operation more than 110 kV. The potential safety hazard that cable maintenance site operation personnel climbing composite bushing brought has been solved on the one hand, for the maintenance operation provides reliable safety guarantee, folded cascade cable terminal overhauls cat ladder size and cable terminal steel bottom plate size cooperation well on the other hand, can firmly fix on the steel base, has reduced maintenance activity duration for the cable maintenance especially salvagees efficiency, makes the power off time shorten greatly, the economic benefits that brings inestimable.

Drawings

Fig. 1 is the utility model discloses a collapsible cable terminal access ladder overall view of formula is inhaled to magnetism.

Fig. 2 is the utility model discloses a collapsible cable terminal access ladder top view of formula is inhaled to magnetism.

Fig. 3 is an overall view of a safety retractor of the present invention.

Fig. 4 is the utility model discloses a collapsible cable terminal access ladder atress analysis of formula is inhaled to magnetism is shown.

In the figure, 1, a ladder main body, 2, a triangular side ladder, 3, a magnetic suction base, 4, a safety tightener, 1.1, a ball buckle main body, 1.2 rotating shafts and 4.1 ball joints are arranged.

In the drawings

Is a horizontal force arm and is characterized in that,

is the acting force of the working personnel and is the working force of the working personnel,

is the included angle between the action direction of the H and the vertical surface of the triangular side ladder.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): the foldable cable terminal access ladder of formula is inhaled to magnetism of this embodiment, as shown in fig. 1, including cat ladder main part 1, triangle side ladder 2, safe tightener 4, magnetism inhale base 3, triangle side ladder 2 is respectively installed to cat ladder main part 1 both sides, and magnetism inhale base 3 and fix on cat ladder main part 1 and triangle side ladder 2, and safe tightener 4 is installed on cat ladder main part 1. The position is narrow on the cable terminal, and conventional ladder of ascending a height can't put the operation of fixing on the metal base around the cable terminal that supplies operation personnel safety and stability. Although it is possible to build an access platform around the cable terminations, the number of cable terminations is growing at a rapid pace with the ongoing development of power supply, and the cost of building an access platform is very expensive. The utility model provides a collapsible cable terminal access ladder of formula is inhaled to magnetism, access ladder itself collapsible be convenient for operation personnel take cable terminal on, and the safe tightener 4 that is equipped with on the access ladder also can be at the cable maintenance in-process protection operation personnel sufficient security. Different from the fixed mode of conventional maintenance ladder, conventional draw-in groove structure has been abandoned in this practicality, inhales base 3 through the installation magnetism in maintenance ladder bottom and makes the maintenance ladder fix on cable terminal to make the maintenance trapezoidal form more laminate cable terminal, further make things convenient for operation personnel's maintenance and salvage work.

As shown in fig. 1, the magnetic base 3 is respectively installed on the bottom surfaces of the ladder main body 1 and the triangular side ladder 2, and the magnetic base 3 is fixedly connected with the ladder main body 1 and the triangular side ladder 2 through the through holes. Mechanical structure such as buckle of conventional maintenance ladder need place the maintenance ladder and adjust mechanical structure behind the assigned position, fixes mechanical structure at metal base again, and whole process is complicated loaded down with trivial details, need consume a large amount of time of operation personnel, influences work efficiency very much. And this patent adopts magnetism to inhale base 3, puts the maintenance ladder behind the metal base on the cable terminal, and the switch is inhaled to a key open magnetism, and magnetism is inhaled base 3 alright adsorb the maintenance ladder on the metal base, and whole operation flow is simple swift, has greatly saved operation personnel's leading preparation time, has greatly improved the work efficiency that electric power overhauld.

As shown in fig. 1, the triangular side ladder 2 comprises an inclined plane and a vertical plane, a hinge is arranged on the vertical plane of the triangular side ladder 2 to connect the ladder main body 1 and the triangular side ladder 2, and a through hole is arranged at the bottom end of the triangular side ladder 2. The unable stable fixing of single cat ladder is on cable terminal, is equipped with triangle side ladder 2 and gives whole cat ladder main part 1 support in cat ladder main part 1 both sides, passes through hinge connection between triangle side ladder 2 and the cat ladder main part 1, and is rotatory simple convenient, can fold together after the use is accomplished, and the operating personnel of also being convenient for carry.

As shown in fig. 2, the ladder main body 1 comprises a rectangular frame and a spherical buckle, wherein a through hole is formed in the bottom end of the rectangular frame, and the spherical buckle is arranged at the top end of the side face of the rectangular frame. The ball-shaped buckle arranged on the ladder stand main body 1 comprises a rotating shaft 1.2 and a ball-shaped buckle main body 1.1, the ball-shaped buckle main body 1.1 is connected with the rotating shaft 1.2, and the rotating shaft 1.2 is fixedly arranged on the side surface of the rectangular frame. The ball is buckled and is installed in cat ladder main part 1 both sides, and ball is buckled main part 1.1 and can be rotatory along with pivot 1.2, and safe tightener 4 is fixed on the ball is buckled, can overturn the pulling around it when the operation personnel pulling safe tightener 4, and the operation personnel of being convenient for cat ladder and the front and back position of adjustment safety tightening.

As shown in figure 3, the safety tightener 4 comprises a tightening belt and a ball joint 4.1, the ball joint 4.1 is fixed with the tightening belt, and the ball joint 4.1 is matched and connected with a ball buckle on the ladder main body 1. The spherical joints 4.1 at the two ends are safely tightened and matched with the spherical buckles, after the spherical joints 4.1 and the spherical buckles are fixed together, the spherical joints 4.1 can rotate and move in the spherical buckles, when an operator adjusts the length of the safe tightener 4 and stands on the overhaul ladder to move in a small range, the spherical joints 4.1 and the spherical buckles slide mutually to provide a certain range of movement space for the operator, the situation that the operator cannot move due to the locking of the length of the safe tightener 4 is avoided, or the length of the safe tightener 4 needs to be adjusted in each movement. The connecting structure of the spherical joint 4.1 and the spherical buckle also provides a certain moving space for the operating personnel on the basis of ensuring that the safety tightener 4 can stably protect the operating personnel, and improves the efficiency of maintenance operation.

As shown in figure 4, the distance between the installation position of the magnetic base 3 and the vertical surface of the triangular side ladder 2 is a horizontal force arm

The force of the worker is

The pulling force received by the magnetic base 3 is

The included angle between the acting direction of the acting force H of the staff and the vertical surface of the triangular side ladder 2 is

The magnetic attraction pulls the base 3 to the vertical direction

Pulling force

Force arm stressed horizontally

The length affects and varies. Because the physical states of the operators are different, and the stress directions and the stress points are different, aiming at the situation, the acting force required by the magnetic suction base 3 can be measured and calculated through a mechanical model

To the minimum of (c). Through the calculation of establishing a mechanical model, the installation position of the magnetic suction base 3 can be changed to adjust the horizontal force arm

Further change the tension

Finally, the magnetic base 3 with the maximum acting force meeting the standard is manufactured.

The working process is as follows: when needs use the access ladder, the operation personnel will overhaul the other triangle side ladder 2 of ladder and open and place it on cable terminal, again with 3 trompils of magnetism absorption base of access ladder bottom open just can fix the access ladder on the metal base at cable terminal, after the operation personnel climbed the access ladder, open safe tightener 4 again and adjust to a suitable length, just begin to carry out the electric power maintenance operation after accomplishing above step.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms cable termination, access ladder, knob, safety tightener, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (7)

1. The utility model provides a collapsible cable terminal access ladder of formula is inhaled to magnetism, its characterized in that, includes cat ladder main part (1), triangle side ladder (2), safe tightener (4), magnetism inhale base (3), triangle side ladder (2) are respectively installed to cat ladder main part (1) both sides, magnetism inhale base (3) and fix on cat ladder main part (1) and triangle side ladder (2), safe tightener (4) are installed on cat ladder main part (1).

2. The magnetic type foldable cable terminal maintenance ladder as claimed in claim 1, wherein the ladder main body (1) comprises a rectangular frame and a spherical buckle, the bottom end of the rectangular frame is provided with a through hole, and the spherical buckle is arranged at the top end of the side face of the rectangular frame.

3. A magnetic type foldable cable terminal access ladder as claimed in claim 2, characterized in that the ball-shaped buckle comprises a rotating shaft (1.2) and a ball buckle body (1.1), the ball buckle body (1.1) is connected with the rotating shaft (1.2), and the rotating shaft (1.2) is installed and fixed on the side of the rectangular frame.

4. The magnetic type foldable cable terminal maintenance ladder as claimed in claim 1, wherein the triangular side ladder (2) comprises an inclined plane and a vertical plane, a hinge is arranged on the vertical plane of the triangular side ladder (2) to connect the ladder main body (1) with the triangular side ladder (2), and a through hole is arranged at the bottom end of the triangular side ladder (2).

5. The magnetic attraction type foldable cable terminal maintenance ladder as claimed in claim 1, wherein the magnetic attraction base (3) is respectively installed on the bottom surfaces of the ladder main body (1) and the triangular side ladder (2), and the magnetic attraction base (3) is fixedly connected with the ladder main body (1) and the triangular side ladder (2) through holes.

6. A magnetic-type foldable cable terminal access ladder as claimed in claim 1, characterized in that the included angle between the ladder main body (1) and the triangular side ladders (2) on both sides is less than 135 °.

7. A magnetic-type foldable cable terminal access ladder as claimed in claim 2, characterized in that the safety tightener (4) comprises a tightening belt and a ball joint (4.1), the ball joint (4.1) is fixed with the tightening belt, the ball joint (4.1) is fittingly connected with a ball buckle on the ladder body (1).

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