CN204738737U - an insulating step ladder - Google Patents

Abstract

The utility model provides an insulating step ladder, which aims to solve the problem that in the prior art, when the distance between two strings of insulators exceeds 60cm, it is difficult for staff to enter and exit the equipotential. Insulating cross bars, mounting bases are fixedly connected to both ends of each insulating cross bar, and each mounting base includes a seat body fixed on the insulating cross bar, a first arc-shaped hoop plate, a second arc-shaped hoop plate and an adjustable Detachable fasteners, the first arc-shaped hoop plate is set on the base body, the second arc-shaped hoop plate is transferred to the base body, the first arc-shaped hoop plate and the second arc-shaped hoop plate are embraced by the detachable fastener Tight on jumper wire. The utility model is convenient for climbing, which reduces the risk and labor intensity of the staff; the staff does not need to move along the two strings of insulators, according to the technical requirement of "crossing two short three""hands and feet move horizontally synchronously", which solves the problem of the existing technology When the distance between the two strings of insulators exceeds 60cm, it is difficult for staff to enter and exit the equipotential.

Description

an insulating step ladder

technical field

The utility model relates to the field of a climbing pole tower, in particular to an insulating step ladder.

Background technique

In recent years, my country's UHV lines have developed rapidly, and the scale of the power grid has been expanding day by day. Due to the huge transmission capacity, its operation reliability is extremely high, and power outage maintenance is very difficult. It is often necessary to perform equipotential work to eliminate defects or install online monitoring equipment. Due to the special design of UHV line towers and components, the equipotential operation faces many technical difficulties.

Usually, the relevant regulations and guidelines for live work stipulate that: the equipotential method of entering and exiting the tension tower of the transmission line is the "cross-two-short-three" method (in order to occupy the insulating air gap as small as possible, hands and feet cross two insulators, short-circuit three-piece insulator). Practical experience shows that when the horizontal distance between two strings of insulators exceeds 60cm, the distance between the hands and feet of the operator is too large, and it is impossible to "synchronously move the hands and feet laterally" according to the technical requirements of "crossing two shorts and three", and the operation risk and labor intensity are extremely high. big. The data shows that the horizontal distance between the two strings of insulators in the UHV line is greater than 60cm, and the distance is as high as 100cm in the line tower located in the heavy ice area.

Utility model content

The utility model provides an insulating step ladder, aiming at solving the problem in the prior art that when the distance between two strings of insulators exceeds 60 cm, it is difficult for staff to enter and exit the equipotential.

In order to solve the above technical problems, the utility model is realized through the following technical solutions: an insulating step ladder, including two jumpers and an insulating cross bar arranged between the two jumping wires, each insulating cross bar is fixed at both ends It is connected with mounting bases, and each mounting base includes a seat body fixed on the insulating cross bar, a first arc-shaped hoop plate, a second arc-shaped hoop plate and detachable fasteners, and the first arc-shaped hoop plate is arranged on the seat On the body, the second arc-shaped hoop plate is transferred to the base body, and the first arc-shaped hoop plate and the second arc-shaped hoop plate are tightly held on the jumper by detachable fasteners.

Further, the first arc-shaped hoop plate is provided with a first installation ear, the first installation ear is provided with a semicircular groove, and the second arc-shaped hoop plate is provided with a second installation ear; the detachable fastener consists of two The two-stage stepped rod is composed of a small diameter part and a large diameter part. The diameter of the small diameter part is the same as the width of the semicircular groove. The small diameter part is connected to the second mounting ear through threads, and the handle is fixed on the large diameter part. superior. Facilitate the installation and removal of detachable fasteners.

Further, the first arc-shaped hoop is fixed on the base, or the first arc-shaped hoop is integrated with the base, or the first arc-shaped hoop is transferred to the base.

Further, the insulating cross bar is a hollow tube. The weight of the insulating cross bar is reduced, and the labor intensity is reduced.

Further, the insulating cross bar is a telescopic bar. It is convenient to adjust the length of the insulating cross bar according to the distance between two jumpers.

Further, a rubber pad is provided on the inner wall of each first arc-shaped hoop plate and on the inner wall of each second arc-shaped hoop plate. It is beneficial to reduce the wear and tear on the jumper.

Compared with the prior art, the utility model has the advantages that: in the utility model, several insulating horizontal bars are installed on two lines through detachable fasteners to form a step ladder, and in the process of climbing toward the equipotential Install the insulating crossbar on the jumper section by section. When it comes down, remove the crossbar section by section; it is easy to climb and reduces the risk and labor intensity of the staff; the staff does not need to follow along The two strings of insulators, in accordance with the technical requirements of "spanning two shorts and three" with "synchronous lateral movement of hands and feet", solves the problem in the prior art that it is difficult for staff to enter and exit the equipotential when the distance between the two strings of insulators exceeds 60cm.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the structural representation of cross bar and mounting base in the utility model;

Fig. 2 is the structural representation of the utility model;

Fig. 3 is a positional relationship diagram between the utility model and the pole tower.

Detailed ways

Referring to Fig. 1 and Fig. 2, an insulating step ladder includes two jumper wires 1 and an insulating crossbar 2 arranged between the two jumper wires 1, and both ends of each insulating crossbar 2 are fixedly connected with mounting bases 3. Each mounting seat 3 includes a seat body 4 fixed on the insulating cross bar 2, a first arc-shaped hoop plate 5, a second arc-shaped hoop plate 6 and a detachable fastener 7, the first arc-shaped hoop The plate 5 is set on the seat body 4, the second arc-shaped hoop plate 6 is transferred to the seat body 4, the first arc-shaped hoop plate 5 and the second arc-shaped hoop plate 6 are fastened to the jumper through the detachable fastener 7 1 on. The first arc hoop plate 5 is provided with a first mounting ear 8, the first mounting ear 8 is provided with a semicircular groove 81, and the second arc hoop plate 6 is provided with a second mounting ear 9; the detachable tight The firmware 7 is composed of a two-stage stepped rod 10 and a handle 11. The two-stage stepped rod 10 is composed of a small diameter part and a large diameter part. The diameter of the small diameter part is the same as the width of the semicircular groove 81. The small diameter part is connected to the second installation by thread On the ear 9, the handle 11 is fixed on the large diameter portion. The first arc hoop 5 is fixed on the base body 4 , or the first arc hoop 5 is integrated with the base 4 , or the first arc hoop 5 is connected to the base 4 . The insulating cross bar 2 is a hollow tube. The insulating cross bar 2 is a telescopic bar. A rubber pad 12 is provided on the inner wall of each first arc hoop 5 and on the inner wall of each second arc hoop 6 .

When working, when the mounting base 3 is installed on the jumper 1, the first arc-shaped hoop 5 and the second arc-shaped hoop 6 are hugged on the jumper 1, and at the same time, the small diameter part of the second-level ladder rod 10 is clamped on the In the semi-circular groove 81, the first mounting ear 8 and the second mounting ear 9 are gradually moved closer by rotating the handle 11, and the large diameter portion of the two-stage ladder rod 10 is limited on the first mounting ear 8, so that the mounting base 3 is installed on the jumper. on line 1.

Referring to Figure 2 and Figure 3, when climbing up, the worker 01 carries the insulating crossbar 2, and each time he climbs a height along the jumper 1, an insulating crossbar 2 is fixed between the two jumper wires 1 through the mounting base 3 , and then step on the insulating cross bar 2 installed in front, install the next insulating cross bar 2, know to climb to the equipotential.

When the worker 01 returns, the worker will remove an insulating cross bar every time he descends a height until he falls to the hard jumper 03.

Referring to Figure 3, jumper suspension insulator string 02 hangs hard jumper wire 03 on pole tower 04, and tension insulator string 05 hangs on wire 06 (generally there are 6 to 8 wires, for the convenience of drawing, only 2 wires are drawn) Between the pole and the tower 04, the jumper 1 (referring to the soft jumper, generally 6 to 8, for the convenience of illustrating the utility model, only draws 2 carrying the insulating cross bar 2) is arranged on the hard jumper 03 Between the wire 06 and the worker 01 crawls from the hard jumper 03 to the jumper 1.

In the utility model, several insulating cross bars are installed on two lines through detachable fasteners to form a step ladder, and the insulating cross bars are installed on the jumper one by one in the process of climbing toward the equipotential When it comes down, the crossbar is disassembled section by section; it is convenient to climb, which reduces the risk and labor intensity of the staff; the staff does not need to follow the two strings of insulators, according to the technical requirements of "cross two short three" The unique "synchronous lateral movement of hands and feet" solves the problem in the prior art that when the distance between two strings of insulators exceeds 60cm, it is difficult for staff to enter and exit the equipotential.

The above is only a specific embodiment of the utility model, but the technical characteristics of the utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the utility model are all covered by the utility model. In the scope of the new patent.

Claims (6)

1. An insulating step ladder is characterized in that: it comprises two jumpers (1) and an insulating cross bar (2) arranged between the two jumping wires, and both ends of each insulating cross bar are fixedly connected with installation seat (3), each mounting seat includes a seat body (4) fixed on the insulating cross bar, a first arc hoop (5), a second arc hoop (6) and detachable fasteners (7), the first arc-shaped hoop plate is arranged on the seat body, the second arc-shaped hoop plate is transferred on the seat body, and the first arc-shaped hoop plate and the second arc-shaped hoop plate are tightly held by detachable fasteners Jumper. 2. An insulating step ladder according to claim 1, characterized in that: the first arc-shaped hoop plate is provided with a first mounting ear (8), and a semicircular groove (81) is provided on the first mounting ear , the second arc-shaped hoop plate is provided with a second mounting ear (9); the detachable fastener is composed of a two-stage stepped rod (10) and a handle (11), and the two-stage stepped rod is composed of a small diameter part and a large diameter part Composition, the diameter of the small-diameter part is the same as the width of the semi-circular groove, the small-diameter part is connected to the second mounting ear through threads, and the handle is fixed on the large-diameter part. 3. An insulating step ladder according to claim 1, characterized in that: the first arc hoop is fixed on the base, or the first arc hoop is integrated with the base, or the first arc hoop The hoop plate is transferred on the seat body. 4. An insulating step ladder according to claim 1, characterized in that: said insulating cross bar is a hollow tube. 5. An insulating step ladder according to claim 1, characterized in that: said insulating cross bar is a telescopic bar. 6. An insulating step ladder according to claim 1, characterized in that rubber pads (12) are provided on the inner wall of each first arc hoop and on the inner wall of each second arc hoop .