CN103036177A - Hauling-up device for replacing pin insulator and replacing method - Google Patents

Abstract

The invention discloses a lifting device and a replacement method for replacing an insulating needle bottle with electricity, which comprises an insulating support with an insulating support opening at one end, and a wire holding slot and a matching wire holding slot cover are also provided on the insulating support plate; the insulating bracket is connected to the insulating base plate through the lifting rod, and a fixing device for fixing the cross arm is provided under the insulating base plate; The sleeve and the lower sleeve, and the rods with positive and negative threads at both ends are connected with the ratchet wrench. The invention solves the limitation of the working range when using the small crane of the insulating bucket arm truck to replace the insulating needle bottle, and solves the problem that the needle bottle of the circuit with a large self-weight is difficult to replace with electricity.

Description

Lifting device and replacement method for replacing insulating needle bottles

technical field

The invention belongs to the technical field of insulating lifting, and relates to a lifting device and a replacement method for replacing insulating needle bottles with electricity.

Background technique

At present, in the 10kV live replacement of insulating needle bottles on power distribution lines, operators usually use the following two working methods to lift, support wires and replace insulating needle bottles. One: Use the small crane attached to the insulated bucket arm truck to lift and support the wires, and then replace the insulated needle bottles. Second: The staff wear insulating gloves to lift the insulated wire and place it on the pre-installed temporary insulating porcelain column, and then replace the insulating needle bottle. However, in the implementation process of method 1, the bucket arm truck cannot move freely after the wire is hoisted by a small crane. For the erection of high and low voltage on the same pole, dense low-voltage household lines or complex pole shapes, the operation is very inconvenient and often There is a situation that it is too close to the electrified body, so this method has great limitations and dangers in the working environment. In the implementation of the second method, if the wire diameter at the work site is too large or the line span is too long, the weight of the wire is too large, and the staff cannot hold the wire by hand and place it on the temporary insulating porcelain column fixed next to it. , and the work cannot be carried out.

Contents of the invention

The problem to be solved by the present invention is to provide a lifting device and replacement method for replacing insulating needle bottles, which solves the limitation of the working range when using the small crane of the insulating bucket arm truck to replace the insulating needle bottles, and solves the problem of the heavy line The problem that the damaged needle bottle is difficult to replace with electricity.

The present invention is achieved through the following technical solutions:

A lifting device for replacing insulated needle bottles, including an insulating support with an insulating support wire opening at one end, a wire clamping slot and a matching wire clamping slot cover on the insulating bracket; the insulating bracket passes through the lifting rod It is connected with the insulating base plate, and a fixing device for fixing the cross arm is provided under the insulating base plate; the lifting rod includes an upper sleeve and a lower sleeve connected by a shaft with positive and negative threads at both ends. The barrel is connected with the shaft and the ratchet wrench.

A groove is provided beside the wire holding slot, and a hook matching the groove is arranged on the cover of the wire holding slot.

After the ratchet wrench is shaken, the lifting rod is extended toward both ends or shortened toward the middle.

When the upper sleeve and the lower sleeve move opposite to each other, the lifting rod is extended toward both ends; when the upper sleeve and the lower sleeve move toward each other, the lifting rod is shortened towards the middle.

The ratchet wrench has a rocker arm and a control valve that controls the lengthening or shortening of the lifting rod.

The above are all made of insulating materials that can withstand the corresponding voltage level.

The insulating needle bottle replacement method based on the lifting device may further comprise the steps:

1) Put the wire support opening of the insulating bracket at the front end of the insulating bracket into the bottom of the wire fixed by the needle bottle to be replaced, and fix the insulating bottom plate on the cross arm where the needle bottle to be replaced is located through the fixing device;

2) Pull the ratchet wrench, so that the upper sleeve and the lower sleeve move in opposite directions, and the lifting rod extends to both ends, lifts the insulating bracket and bears the downward pressure of the wire;

3) After the insulating bracket fully bears the downward pressure of the wire, push the wire horizontally into the wire clamping groove and fix it with the wire clamping groove cover;

4) After the wire is fully lifted to ensure a safe distance, replace the damaged insulating needle bottle; after the replacement, restore the wire.

The insulating bottom plate is fixed on the cross arm where the needle bottle to be replaced is located by fixing bolts.

After the wire is restored, the ratchet wrench is pulled to make the upper sleeve and the lower sleeve move toward each other, and the lifting rod shrinks toward the middle, and the lifting device is removed.

Compared with the prior art, the present invention has the following beneficial technical effects:

The lifting device for replacing the insulated needle bottle provided by the present invention, firstly, the device is fixed on the cross arm that needs to replace the needle bottle for lifting, and there is no need to use a small crane for lifting the bucket arm truck, so that the bucket arm of the bucket arm truck can move freely , which effectively improves the operating range of the bucket arm truck; secondly, because the device itself has a lifting function, it solves the problem that the wire cannot be lifted in a large-diameter wire and a large-gear operating environment.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the operation process of steps 1) and 2) of the insulating needle bottle replacement method of the present invention;

Fig. 3 is a schematic diagram of the operation process of step 3) of the insulating needle bottle replacement method of the present invention;

Fig. 4 is a schematic diagram of the operation process of step 4) of the method for replacing an insulating needle bottle according to the present invention.

Among them, 1 is the wire support opening of the insulating bracket, 2 is the cover plate of the cable slot, 3 is the lifting rod, 4 is the rocker arm of the ratchet wrench, 5 is the fixing device, and 6 is the fixing bolt.

Detailed ways

The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

Referring to Fig. 1, a lifting device for replacing an insulating needle bottle includes an insulating support with an insulating support wire opening 1 at one end, and a wire clamping slot and a matching wire clamping slot cover 2 are also provided on the insulating bracket; The insulating support is connected to the insulating base plate through the lifting rod 3, and the fixing device 5 for fixing the cross arm is provided under the insulating base plate; The sleeve and the lower sleeve, the rods with positive and negative threads at both ends are connected with the ratchet wrench 4 .

Specifically, grooves are arranged next to the wire clamping slot, and hooks matching the grooves are provided on the wire clamping slot cover plate 2, so as to better fix the wires and prevent them from running off.

After shaking the ratchet wrench, the lifting rod is extended toward both ends or shortened toward the middle; it is convenient for lifting or lowering the insulating support; specifically, the lifting rod includes two sleeves with positive and negative internal threads respectively (the upper sleeve and the The lower sleeve) and the connecting shaft with positive and negative threads at both ends are driven by shaking the ratchet wrench to convert the rotary motion into linear motion:

After the ratchet wrench is shaken, when the upper sleeve and the lower sleeve move against each other, the lifting rod will extend toward both ends; after the ratchet wrench is reversed, the upper sleeve and the lower sleeve will move toward each other, and the lifting rod will shorten toward the middle.

And for ease of operation, ratchet wrench 4 is provided with rocking arm, is also provided with the control valve of control extension or shortening.

In order to better ensure the safety of the working process, the lifting device is all made of insulating materials.

When replacing the insulating needle bottle, it is achieved through the following steps:

1) Put the wire support port of the insulating bracket at the front end of the insulating bracket into the bottom of the wire fixed by the needle bottle to be replaced, and fix the insulating bottom plate on the cross arm where the needle bottle to be replaced is fixed through the fixing device; specifically, use fixing bolts fixed on the cross arm;

2) Pull the ratchet wrench, so that the upper sleeve and the lower sleeve move in opposite directions, and the lifting rod extends to both ends, lifts the insulating bracket and bears the downward pressure of the wire;

3) After the insulating bracket fully bears the downward pressure of the wire, push the wire horizontally into the wire clamping slot of the lifting device and fix it with the wire clamping slot cover;

4) After the wire is fully lifted to ensure a safe distance (to raise the wire to the effective operating range), replace the damaged insulating needle bottle; after the replacement, restore the wire.

After the wire is restored, pull the ratchet wrench to make the upper sleeve and the lower sleeve move toward each other, and the lifting rod shrinks toward the middle, and the lifting device is removed.

In the lifting device and replacement method for replacing insulating needle bottles provided by the present invention, the lifting device is fixed on the cross arm of the needle bottle to be replaced for lifting, and there is no need to use a small crane for lifting the bucket arm truck, so that the bucket arm of the bucket arm truck It can be moved at will, which effectively improves the operating range of the bucket arm truck. Moreover, because the tool itself has a lifting function, it solves the problem that the wires cannot be lifted in the working environment of large wire diameters and large spans.

Claims (9)

1. a hoisting apparatus of changing the insulating needle bottle is characterized in that, comprises that an end is provided with the insulating support of insulating support holder line mouth (1), the cable clamping interface cover plate (2) that also is provided with cable clamping interface on the insulating support and is complementary with it; Insulating support is connected with insulating base by prypole (3), and insulating base below is provided with for the fixture (5) that fixes with cross-arm; Described prypole comprises by two ends and is respectively equipped with upper bush and the lower sleeve that the connecting shaft of positive and negative screw thread is connected that connecting shaft is connected with ratchet spanner (4).

2. the hoisting apparatus of replacing insulating needle bottle as claimed in claim 1 is characterized in that, described cable clamping interface next door is provided with groove, and cable clamping interface cover plate (2) is provided with the hook that is complementary with groove.

3. the hoisting apparatus of replacing insulating needle bottle as claimed in claim 1 is characterized in that, shakes after the ratchet spanner, and prypole shortens to the two ends elongation or to the centre.

4. the hoisting apparatus of replacing insulating needle bottle as claimed in claim 3 is characterized in that, when upper bush and the opposing motion of lower sleeve, prypole extends to two ends; When upper bush and lower sleeve move toward one another, prypole shortens to the centre.

5. the hoisting apparatus of replacing insulating needle bottle as claimed in claim 3 is characterized in that, described ratchet spanner (4) is provided with rocking arm, also is provided with the control valve that the control prypole elongates or shortens.

6. such as the hoisting apparatus of any one described replacing insulating needle bottle of claim 1～5, it is characterized in that, all adopt the insulating material that can tolerate the relevant voltage grade to make.

7. the insulating needle bottle replacing method based on hoisting apparatus claimed in claim 1 is characterized in that, may further comprise the steps:

1) the insulating support holder line mouth of insulating support front end is put into the wire bottom that pin bottle to be replaced is fixed, and be fixed on insulating base on the cross-arm at pin bottle place to be replaced by fixture;

2) pull ratchet spanner, make the opposing motion of upper bush and lower sleeve, prypole extends to two ends, insulating support is lifted and bears the downward pressure of wire;

3) after insulating support bears the downward pressure of wire fully, the wire level is pushed in the cable clamping interface and fix with the cable clamping interface cover plate;

4) wire is held up extremely can guarantee to change the insulating needle bottle of damage after the safe distance fully; Change complete after, recover wire.

8. insulating needle bottle replacing method as claimed in claim 7 is characterized in that, described insulating base is fixed on the cross-arm at pin bottle place to be replaced by set bolt.

9. insulating needle bottle replacing method as claimed in claim 7 is characterized in that, behind the recovery wire, pulls ratchet spanner, makes upper bush and lower sleeve move toward one another, and prypole shrinks to the centre, and hoisting apparatus is removed.

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