CN111614005B - A method of disassembling and assembling a distribution transformer - Google Patents

Abstract

The invention relates to the technical field of distribution transformer installation, in particular to a method for disassembling and assembling a distribution transformer. The dismounting and mounting method of the distribution transformer comprises the following steps: mounting the hoisting frame on the electric pole so that the hoisting frame is positioned above the cross arm of the distribution transformer; installing a lifting device on a hoisting frame; installing a distribution transformer on a lifting device, wherein the lifting device lifts the distribution transformer above a cross arm of the distribution transformer; and taking down the distribution transformer from the lifting device and installing the distribution transformer on a hoisting frame. The dismounting method of the distribution transformer can be suitable for outdoor environments with poor ground environments, and is less restricted by terrain environments. The dismounting method can realize the timely maintenance of the damaged distribution transformer, ensure the timely recovery of a paralyzed power system and avoid great economic loss and social loss. The disassembly and assembly method has the advantages of few assembly procedures, small construction area, no damage to surrounding plants, vegetation and the like, and contribution to the protection of natural ecological environment.

Description

A method of disassembling and assembling a distribution transformer

technical field

The invention relates to the technical field of installation of distribution transformers, in particular to a method for disassembling and assembling distribution transformers.

Background technique

The disassembly and assembly of distribution transformers mainly adopts three methods: forklift lifting, crane lifting and pole lifting. Among them, the disassembly and assembly method recommended by forklifts is only suitable for factory areas with relatively flat ground, and is not suitable for outdoor environments with poor ground conditions. Although crane lifting is relatively fast, the disassembly method of crane lifting is restricted by traffic conditions and terrain environment. For example, it is difficult for the crane to enter the mountainous area with poor ground environment; when the road is blocked by rain and snow, the crane cannot enter the designated area for power distribution. Transformer installation. The poles are installed on the ground around the poles, but the total weight of the supporting equipment for the poles exceeds 400Kg, and the time required for the installation of the distribution transformer for the supporting equipment for the poles is more than 108 minutes, and the transportation and installation of the supporting equipment for the poles takes a long time. There are many assembly processes and the construction surface is too large, which is easy to damage surrounding plants and vegetation.

Therefore, the installation method of the traditional distribution transformer is greatly affected by the topography and environment, the applicable construction environment range is small, the construction cost is high, the construction time is long, and the labor consumption is large, which seriously restricts the construction progress of the distribution network construction and the construction enterprises. develop.

Based on this, it is urgent to invent a method for disassembling and assembling a distribution transformer to solve the above-mentioned problems.

Contents of the invention

The purpose of the present invention is to propose a disassembly method for distribution transformers, which is suitable for a wide range of construction environments, low construction costs, short construction time, low labor consumption, and can improve the construction progress of distribution network construction and the development of construction enterprises.

For reaching above-mentioned purpose, the present invention adopts following technical scheme:

A method for disassembling and assembling a distribution transformer, comprising:

Step 1: Install the hoisting frame on the pole so that the hoisting frame is located above the cross arm of the distribution transformer;

Step 2: installing the lifting device on the lifting frame;

Step 3: installing the distribution transformer on the lifting device, and the lifting device lifts the distribution transformer above the cross arm of the distribution transformer;

Step 4: Remove the distribution transformer from the lifting device and install it on the lifting frame.

Preferably, the hoisting frame includes a first hoop, a support rod, a telescopic rod and a second hoop, the first hoop is rotatably connected to one end of the support rod, and the other end of the support rod is connected to the One end of the telescopic rod is movably connected, and the other end of the telescopic rod is rotatably connected with the second hoop.

Preferably, the installation of the hoisting frame on the pole in the step 1 is as follows:

Step 11: installing the first hoop and the second hoop on the pole so that the first hoop and the second hoop are arranged in a vertical direction; and

Step 12: Adjust the length of the telescopic rod so that the support rod is placed in a horizontal direction.

Preferably, the second hoop is installed above the first hoop.

As a preference, the installation of the distribution transformer on the lifting device in the step 3 is as follows:

Step 31: Installing the wire rope on the distribution transformer; and

Step 32: Install the steel wire rope on the lifting device.

As a preference, the lifting device in the step 3 lifts the distribution transformer to the top of the cross arm of the distribution transformer as follows:

Step 33: Raise the distribution transformer to the top of the distribution transformer cross arm at a constant speed.

As preferably, after said step 33, include:

Step 34: Apply a force in the horizontal direction to the distribution transformer, so that the distribution transformer avoids the cross-arm of the distribution transformer in the vertical direction.

Preferably, the distribution transformer is provided with an adjustment chain, and the adjustment chain is pulled to keep the distribution transformer away from the cross-arm of the distribution transformer in the vertical direction.

As a preference, after the lifting device in the step 3 lifts the distribution transformer above the cross-arm of the distribution transformer, it further includes:

Step 3': Align the distribution transformer with the cross-arm of the distribution transformer along the vertical direction, so that the distribution transformer is located directly above the cross-arm of the distribution transformer.

As preferably, after said step 4, it also includes:

Step 5: After the distribution transformer is used, remove the distribution transformer from the cross arm of the distribution transformer.

As preferably, said step 5 includes:

Step 51: Install the hoisting frame on the pole, so that the hoisting frame is located above the cross arm of the distribution transformer;

Step 52: installing the lifting device on the lifting frame;

Step 53: installing the distribution transformer on the lifting device, and the lifting device lowers the distribution transformer to the ground;

Step 54: Disconnecting the distribution transformer from the lifting device.

As a preference, the lifting device in the step 53 lowers the distribution transformer to the ground as follows:

Step 531: Lower the distribution transformer to the ground at a constant speed.

As preferably, after the step 53, it also includes:

Step 53': Apply a force in the horizontal direction to the distribution transformer, so that the distribution transformer avoids the cross-arm of the distribution transformer in the vertical direction.

Preferably, the lifting device is an electric hoist.

The beneficial effects of the present invention are:

The disassembly and assembly method of the distribution transformer provided by the present invention installs the hoisting frame on the electric pole, and the lifting device on the hoisting frame lifts the distribution transformer to the top of the cross arm of the distribution transformer, and then the operator installs the distribution transformer on the On the hoisting frame, this disassembly method will not be affected by the ground environment. Even if the ground environment of the construction site is poor, it will not affect the normal installation of the distribution transformer. Compared with the installation method of forklift lifting, this disassembly method is applicable In the outdoor environment with poor ground environment, it is less restricted by the terrain environment.

In addition, this method only needs to install the lifting frame on the pole, and the lifting device is installed on the lifting frame. After the lifting device lifts the distribution transformer to the top of the distribution transformer cross arm, the operator installs the distribution transformer on the distribution transformer. In the cross arm, there is no need to use large equipment such as cranes in the whole process. The operator only needs to transport the small hoisting frame and lifting device to the construction site for corresponding operations. Even if the ground environment of the construction site is poor or the road is blocked by rain and snow It will not affect the normal disassembly and assembly of the distribution transformer, so the disassembly method provided by the present invention is less affected by the topography and environment compared with the installation method of crane lifting. Especially in blizzard weather, blizzards cause great damage to distribution transformers, lead to the paralysis of the entire power system, have a great impact on people's lives and the operation of enterprises, and cause the paralysis of the entire city function. However, Blizzard closed the construction road through the road, which prevented large equipment such as cranes from entering the construction site, and construction workers were unable to repair the distribution transformers in time and restore the normal operation of the power system in time, causing large economic losses to the society and social loss. However, the volume and weight of the hoisting frame and lifting device used in this method are small, and even under the situation of road closure in heavy snow, they can be transported to the construction site by manpower. Applying the disassembly and assembly method provided by the present invention will not affect the normal disassembly and assembly of distribution transformers due to road closures due to heavy snow, and can realize timely maintenance of damaged distribution transformers, ensure timely recovery of paralyzed power systems, and ensure people's safety. Normal life, the normal operation of enterprises and the normal operation of the city can avoid relatively large economic and social losses.

In addition, the disassembly method of the present invention only needs to install the hoisting frame on the pole, and the lifting device is installed on the hoisting frame. In the cross arm of the distribution transformer, there is no need to use large-sized pole supporting equipment throughout the whole process. The hoisting frame and lifting device used in this method are small in size and weight, and have a simple structure, so the lifting frame and lifting device are transported and installed. The time-consuming is short, the assembly process is less, the construction area is small, and the surrounding plants and vegetation will not be damaged, which is conducive to the protection of the natural ecological environment.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to the content of the embodiment of the present invention and these drawings without any creative effort.

Fig. 1 is a schematic structural view of a hoisting frame, a distribution transformer, a pole and a cross arm of a distribution transformer provided by an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of a hoisting frame, a distribution transformer and a lifting device provided by an embodiment of the present invention;

Fig. 3 is a schematic structural view of the second hoop and the first type of telescopic rod provided by the embodiment of the present invention;

Fig. 4 is a cross-sectional view of the telescopic rod provided by the embodiment of the present invention;

Fig. 5 is a schematic structural view of a second hoop and a second type of telescopic rod provided by an embodiment of the present invention.

The markings in the figure are as follows:

1- hoisting frame; 2- electric pole; 3- distribution transformer cross arm; 4- lifting device; 5- distribution transformer; 6- wire rope; 7- adjustment chain;

11-first hoop; 12-support rod; 13-telescopic rod; 14-second hoop; 41-hook;

121-second hanging ring; 131-connector; 132-locking piece; 133-sleeve; 134-adjusting rod; 135-first hanging ring; 136-bolt; 137-nut.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this embodiment, the terms "up", "down", "left", "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operations. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

The disassembly and assembly method of the distribution transformer provided in this embodiment includes:

Step 1: Install the hoisting frame 1 on the pole 2 so that the hoisting frame 1 is located above the cross arm 3 of the distribution transformer;

Step 2: Install the lifting device 4 on the hoisting frame 1;

Step 3: install the distribution transformer 5 on the lifting device 4, and the lifting device 4 lifts the distribution transformer 5 to the top of the cross arm 3 of the distribution transformer;

Step 4: Remove the distribution transformer 5 from the lifting device 4 and install it on the hoisting frame 1 .

The disassembly and assembly method of the distribution transformer in this embodiment installs the hoisting frame 1 on the pole 2, and the lifting device 4 on the hoisting frame 1 lifts the distribution transformer 5 to the top of the distribution transformer cross arm 3, and the operator then Install the distribution transformer 5 on the hoisting frame 1. This disassembly method will not be affected by the ground environment. Even if the ground environment at the construction site is poor, it will not affect the normal installation of the distribution transformer 5. This disassembly method is the same as Compared with the disassembly and assembly method recommended by the forklift, it can be applied to the outdoor environment with poor ground environment, and is less restricted by the terrain environment.

In addition, this method only needs to install the hoisting frame 1 on the pole 2, the lifting device 4 is installed on the hoisting frame 1, and after the hoisting device 4 lifts the distribution transformer 5 above the cross-arm 3 of the distribution transformer, the operator will The electrical transformer 5 is installed in the cross-arm 3 of the distribution transformer. There is no need to use large equipment such as cranes in the whole process, and the operator only needs to transport the smaller hoisting frame 1 and lifting device 4 to the construction site for corresponding operations. Even if the ground environment of the construction site is poor or the road is blocked by rain and snow, it will not affect the normal disassembly and assembly of the distribution transformer 5, so the disassembly method provided by this embodiment is more affected by the terrain and landform than the method of disassembly and assembly by crane lifting. Environmental impact is small. Especially in blizzard weather, blizzard causes great damage to distribution transformer 5, causes whole power system to be paralyzed, causes great influence to people's life, operation of enterprise, causes the paralysis of whole city function. However, Blizzard closed the road during the construction process, which resulted in the inability of cranes and other large equipment to enter the construction site, and the construction personnel could not repair the distribution transformer 5 in time, and the construction personnel could not restore the normal operation of the power system in time, resulting in large economic losses and social loss. However, the volume and weight of the hoisting frame 1 and lifting device 4 used in this method are small, even in the case of road closures in heavy snow, they can also be transported to the construction site by manpower. It will affect the normal disassembly and assembly of the distribution transformer 5 due to the snowstorm road closure, and can realize timely maintenance of the damaged distribution transformer 5, ensure the timely recovery of the paralyzed power system, and ensure the normal life of the people, the normal operation of enterprises and The normal operation of the city can enable the society to avoid relatively large economic and social losses.

In addition, the disassembly method of this embodiment only needs to install the lifting frame 1 on the pole 2, the lifting device 4 is installed on the lifting frame 1, and the lifting device 4 lifts the distribution transformer 5 to the top of the distribution transformer cross arm 3. , the operator installs the distribution transformer 5 in the distribution transformer cross-arm 3, without using a large supporting tool for holding the pole in the whole process, the volume and weight of the hoisting frame 1 and the lifting device 4 used in this method are small, and The structure is simple, so the transportation and installation of the hoisting frame 1 and the lifting device 4 are time-consuming, the assembly process is less, the construction area is small, and the surrounding plants and vegetation will not be damaged, which is beneficial to the protection of the natural ecological environment.

Specifically, as shown in Figures 1 and 2, the hoisting frame 1 used in this embodiment includes a first hoop 11, a support rod 12, a telescopic rod 13 and a second hoop 14, the first hoop 11 and the support rod One end of 12 is rotatably connected, the other end of support rod 12 is movably connected with one end of telescopic rod 13, and the other end of telescopic rod 13 is rotatably connected with second hoop 14. The hoisting frame 1 is only 48 kg. Compared with the general assembly of pole-supporting equipment with a total assembly weight of more than 400 Kg, the hoisting frame 1 of this embodiment has a simple structure, fewer assembly processes, small volume, light weight, and small construction area. The hoisting frame 1 can install the distribution transformer 5 on the distribution transformer cross arm 3 in only 20 minutes. Compared with the disassembly and assembly method of the pole-holding lifting method, the disassembly and assembly method of the distribution transformer takes less time. The installation efficiency of the distribution transformer 5 can be effectively improved. Cooperating with the pole 2 by the first hoop 11 and the second hoop 14 respectively can improve the fixing effect of the hoisting frame 1 and the pole 2 and ensure a stable connection between the hoisting frame 1 and the pole 2 . As shown in Figure 2, the telescopic rod 13 is provided with a first hanging ring 135, and the support rod 12 is provided with a second hanging ring 121, and the first hanging ring 135 is articulated with the second hanging ring 121, thereby realizing that the supporting rod 12 With the flexible connection of telescoping rod 13.

To facilitate the description of step 1, as shown in Figure 1 and Figure 2, the installation of the hoisting frame 1 on the pole 2 in step 1 is as follows:

Step 11: Install the first hoop 11 and the second hoop 14 on the pole 2 so that the first hoop 11 and the second hoop 14 are arranged vertically; and

Step 12: Adjust the length of the telescopic rod 13 so that the support rod 12 is placed along the horizontal direction.

Through steps 11 and 12, the electric pole 2, the telescopic pole 13 and the support pole 12 can form a triangular structure. Since the triangular structure has the characteristics of stability, firmness and pressure resistance, the electric pole 2, the telescopic pole 13 and the support pole 12 form a triangular structure. The triangular structure can achieve a better supporting effect on the lifting device 4 and the distribution transformer 5, and can prevent the distribution transformer 5 from pulling the hoisting frame 1 from being damaged during the lifting process, so as to ensure the stable lifting action of the distribution transformer 5.

In addition, as shown in Figure 1, the second hoop 14 is installed above the first hoop 11. When the distribution transformer 5 is installed on the support rod 12, the telescopic rod 13 can pull the support rod 12, and can The support rod 12 is preferably placed in the horizontal direction, so that the electric pole 2, the telescopic rod 13 and the support rod 12 maintain a stable triangular structure without deformation.

In order to realize the adjustment of the length of the telescopic rod 13, as shown in Fig. 3 and Fig. 4, the telescopic rod 13 includes a connecting piece 131, a locking piece 132, a sleeve 133 and an adjusting rod 134, wherein the bottom end of the sleeve 133 is provided with a The connecting piece 131 includes a connecting block and a screw rod arranged on one side of the connecting block, the connecting block is rotatably connected with the second hoop 14, and the screw rod penetrates the inside of the sleeve 133 from the bottom of the sleeve 133, and The screw rod is connected with the locking member 132 , so as to fix the relative position of the connecting member 131 and the sleeve 133 along the axial direction, and the connecting member 131 can rotate relative to the sleeve 133 . The inner wall of the sleeve 133 is provided with a screw thread, and the adjustment rod 134 is threaded in the sleeve 133 and screwed with the screw thread. By screwing the sleeve 133, the relative position of the sleeve 133 and the adjustment rod 134 along the axial direction can be adjusted. Thereby, the adjustment of the length of the telescopic rod 13 is realized. By using the above telescopic rod 13, the operator can adjust the length of the telescopic rod 13 through a simple twisting action, making the adjustment of the length of the telescopic rod 13 simple and convenient. In addition, the above-mentioned telescopic rod 13 can be used in a narrow installation space, and the operator can adjust the length of the telescopic rod 13 through a simple screwing action, without being limited by the installation space. In addition, the above structure of the telescopic rod 13 can realize the continuous adjustment of the length of the telescopic rod 13 to meet the requirements for different lengths of the telescopic rod 13 .

As shown in Figure 5, the present embodiment also provides another structure of the telescopic rod 13, the telescopic rod 13 includes a connecting piece 131, a locking piece 132, a sleeve 133, an adjusting rod 134, a first hanging ring 135, a bolt 136 and a nut 137, wherein, the bottom end of the sleeve 133 is provided with an installation hole communicating with its interior, the connecting piece 131 includes a connecting block and a screw rod arranged on one side of the connecting block, the connecting block is rotatably connected with the second hoop 14, and the screw rod is connected from the sleeve The bottom of the barrel 133 penetrates the inside of the sleeve 133, and the screw is connected with the locking member 132, so that the relative position of the connecting member 131 and the sleeve 133 along the axial direction is fixed, and the connecting member 131 can rotate relative to the sleeve 133 . The outer circumference of the sleeve 133 is provided with a plurality of first installation holes along the axial direction, the adjustment rod 134 is provided with a second installation hole, and the bolt 136 passes through the first installation hole on one side, the second installation hole and the other side in turn. The bolt 136 protrudes from the screw part of the sleeve 133 to screw the nut 137 through the first installation hole, so as to realize the fixing of the relative position of the sleeve 133 and the adjusting rod 134 along the axial direction. By arranging the second mounting hole opposite to a different first mounting hole, and fixing the sleeve 133 and the adjusting rod 134 with the bolt 136 and the nut 137, the length adjustment of the telescopic rod 13 can be realized.

As shown in FIG. 2 , the lifting device 4 of this embodiment is an electric hoist. The electric hoist is small in size, compact in structure, light in weight, easy to operate and easy to use, and can provide enough force to make the distribution transformer 5 lift.

In order to facilitate the description of step 3, the installation of the distribution transformer 5 on the lifting device 4 in step 3 is specifically:

Step 31: installing the wire rope 6 on the distribution transformer 5; and

Step 32: Install the wire rope 6 on the lifting device 4 .

Since the outside of the distribution transformer 5 has no structure matching the hook of the electric hoist, it is difficult to install the distribution transformer 5 on the hook of the electric hoist. By installing the wire rope 6 on the distribution transformer 5 and then installing the wire rope 6 on the hook of the electric hoist, the effect of quickly and conveniently installing the distribution transformer 5 on the electric hoist can be achieved. In addition, by wrapping the outer circumference of the distribution transformer 5 with the steel wire rope 6, the structure inside the distribution transformer 5 can be prevented from falling out.

In order to further optimize step 3, the lifting device 4 in step 3 lifts the distribution transformer 5 to the top of the distribution transformer cross arm 3 as follows:

Step 33: Raise the distribution transformer 5 to the top of the distribution transformer cross arm 3 at a constant speed.

Through the uniform motion of the distribution transformer 5, the stable movement of the distribution transformer 5 during the lifting process can be realized, the vibration of the distribution transformer 5 during the lifting process can be avoided, and the internal components of the distribution transformer 5 can be avoided. Damage or dislocation ensures the normal use of the distribution transformer 5 and improves the service life of the distribution transformer 5 .

In order to further optimize step 3, after step 33 include:

Step 34: Apply a force in the horizontal direction to the distribution transformer 5, so that the distribution transformer 5 avoids the cross-arm 3 of the distribution transformer in the vertical direction.

Because the distribution transformer 5 collides with the distribution transformer cross-arm 3 during the lifting process, since the distribution transformer 5 and the distribution transformer cross-arm 3 are both rigid parts, the distribution transformer 5 and the distribution transformer cross-arm 3 Serious bumps will cause damage to the distribution transformer 5, affect the service life of the distribution transformer 5, and make the distribution transformer cross arm 3 loose from the pole 2, so that the distribution transformer cross arm 3 cannot be used for power distribution. The transformer 5 is effectively supported. In order to solve the above problems, a force in the horizontal direction is applied to the distribution transformer 5 so that the distribution transformer 5 avoids the cross-arm 3 of the distribution transformer in the vertical direction, which can effectively prevent the distribution transformer 5 from colliding with the cross-arm 3 of the distribution transformer. Bumping ensures the service life of the distribution transformer 5 and the effective support of the distribution transformer cross arm 3 to the distribution transformer 5 . In order to realize step 34, as shown in Figure 1 and Figure 2, the distribution transformer 5 is provided with an adjustment chain 7, and the operator pulls the adjustment chain 7 to displace the distribution transformer 5 in the horizontal direction so that the power distribution The transformer 5 avoids the cross-arm 3 of the distribution transformer along the vertical direction.

In order to achieve the effect of accurately installing the distribution transformer 5 on the distribution transformer cross-arm 3, after the lifting device 4 lifts the distribution transformer 5 to the top of the distribution transformer cross-arm 3, a step 3' is also included. Step 3' is to install the distribution transformer 5 The electric transformer 5 and the cross-arm 3 of the distribution transformer are vertically aligned so that the distribution transformer 5 is located directly above the cross-arm 3 of the distribution transformer.

In addition, after the step 4, it also includes:

Step 5: After the distribution transformer 5 is used, the distribution transformer 5 is removed from the distribution transformer cross arm 3 .

When the distribution transformer 5 is damaged and needs to be repaired, the distribution transformer 5 needs to be removed from the distribution transformer cross arm 3 , and the damaged distribution transformer 5 can be quickly repaired by applying step 5 .

To facilitate the description of Step 5, Step 5 includes:

Step 51: Install the hoisting frame 1 on the pole 2 so that the hoisting frame 1 is located above the cross arm 3 of the distribution transformer;

Step 52: Install the lifting device 4 on the hoisting frame 1;

Step 53: Install the distribution transformer 5 on the lifting device 4, and the lifting device 4 lowers the distribution transformer 5 to the ground;

Step 54: Take off the distribution transformer 5 from the lifting device 4 .

The disassembly and assembly method of the distribution transformer in this embodiment installs the hoisting frame 1 on the pole 2, and the lifting device 4 on the hoisting frame 1 lowers the distribution transformer 5 to the ground, so that the distribution transformer 5 can be maintained. This disassembly method will not be affected by the ground environment. Even if the ground environment of the construction site is poor, it will not affect the dismantling of the distribution transformer 5. Compared with the dismantling method recommended by a forklift, this disassembly method can be applied to a relatively poor ground environment. Poor outdoor environment, less restricted by terrain environment.

In addition, this method only needs to install the lifting frame 1 on the pole 2, the lifting device 4 is installed on the lifting frame 1, and the lifting device 4 lowers the distribution transformer 5 to the ground, so that the distribution transformer 5 can be maintained. There is no need to use large equipment such as cranes in the whole process. The operator only needs to transport the small lifting frame 1 and lifting device 4 to the construction site for corresponding operations. Even if the ground environment of the construction site is poor or the road is blocked by rain and snow, it will not It affects the normal disassembly and assembly of the distribution transformer, so the disassembly method provided by this embodiment is less affected by the topography and environment than the disassembly method of lifting by crane. Especially in blizzard weather, blizzard causes great damage to distribution transformer 5, causes whole power system to be paralyzed, causes great influence to people's life, the operation of enterprise, causes the paralysis of whole city function. However, Blizzard closed the road during the construction process, resulting in the inability of cranes and other large-scale equipment to enter the construction site, and the construction workers were unable to repair the distribution transformer 5 in time, and could not restore the normal operation of the power system in time, causing relatively large economic losses to the society. and social loss. However, the volume and weight of the hoisting frame 1 and lifting device 4 used in this method are relatively small, even in the case of snowstorm road closures, they can be transported to the construction site by manpower. It will affect the normal disassembly and assembly of the distribution transformer 5 due to the snowstorm road closure, and can realize timely maintenance of the damaged distribution transformer 5, ensure the timely recovery of the paralyzed power system, and ensure the normal life of the people, the normal operation of the enterprise and The normal operation of the city can avoid large economic losses and social losses.

In addition, the disassembly method of this embodiment only needs to install the lifting frame 1 on the pole 2, the lifting device 4 is installed on the lifting frame 1, and the lifting device 4 lowers the distribution transformer 5 to the ground, so that the distribution transformer can be 5 for repairs. There is no need to use large supporting pole-holding equipment in the whole process. The volume and weight of the hoisting frame 1 and the lifting device 4 used in this method are small, and the structure is simple, so the transportation and installation of the hoisting frame 1 and the lifting device 4 are time-consuming. The assembly process is less, the construction area is small, and the surrounding plants and vegetation will not be damaged, which is conducive to the protection of the natural ecological environment.

In order to further optimize step 53, the lifting device 4 in step 53 lowers the distribution transformer 5 to the ground as:

Step 531: Lower the distribution transformer 5 to the ground at a constant speed.

Through the uniform motion of the distribution transformer 5, the stable movement of the distribution transformer 5 during the lowering process can be realized, the vibration of the distribution transformer 5 during the lowering process can be avoided, and the internal components of the distribution transformer 5 can be avoided. Damage or dislocation ensures the normal use of the distribution transformer 5 and improves the service life of the distribution transformer 5 .

In order to further optimize step 5, as preferably, after step 53, include:

Step 53': Apply a force in the horizontal direction to the distribution transformer 5, so that the distribution transformer 5 avoids the distribution transformer cross-arm 3 along the vertical direction.

Since the distribution transformer 5 collides with the distribution transformer cross-arm 3 in the process of descending, since the distribution transformer 5 and the distribution transformer cross-arm 3 are both rigid parts, the distribution transformer 5 and the distribution transformer cross-arm 3 Serious bumps will cause damage to the distribution transformer 5, affect the service life of the distribution transformer 5, and make the distribution transformer cross arm 3 loose from the pole 2, so that the distribution transformer cross arm 3 cannot be used for power distribution. The transformer 5 is effectively supported. In order to solve the above problems, a force in the horizontal direction is applied to the distribution transformer 5 so that the distribution transformer 5 avoids the cross-arm 3 of the distribution transformer in the vertical direction, which can effectively prevent the distribution transformer 5 from colliding with the cross-arm 3 of the distribution transformer. Bumping ensures the service life of the distribution transformer 5 and the effective support of the distribution transformer cross arm 3 to the distribution transformer 5 . In order to realize step 34, as shown in Figure 1 and Figure 2, the distribution transformer 5 is provided with an adjustment chain 7, and the operator pulls the adjustment chain 7 to displace the distribution transformer 5 in the horizontal direction, so that the distribution transformer 5 Keep away from the distribution transformer cross-arm 3 along the vertical direction.

Note that the basic principles and main features of the present invention and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements, which fall within the scope of the claimed invention, are defined by the appended claims and their equivalents.

Claims (3)

1. A method for disassembling and assembling a distribution transformer is characterized by comprising the following steps:

step 1: installing a hoisting frame (1) on an electric pole (2) so that the hoisting frame (1) is positioned above a cross arm (3) of a distribution transformer;

and 2, step: installing a lifting device (4) on the hoisting frame (1);

and step 3: installing a distribution transformer (5) on the lifting device (4), wherein the lifting device (4) lifts the distribution transformer (5) above the distribution transformer cross arm (3);

step 3': aligning the distribution transformer (5) with the distribution transformer cross arm (3) along a vertical direction so that the distribution transformer (5) is positioned right above the distribution transformer cross arm (3);

and 4, step 4: the distribution transformer (5) is taken down from the lifting device (4) and is installed on the distribution transformer cross arm (3);

the hoisting frame (1) comprises a first hoop (11), a support rod (12), a telescopic rod (13) and a second hoop (14), wherein the first hoop (11) is rotatably connected with one end of the support rod (12), the other end of the support rod (12) is movably connected with one end of the telescopic rod (13), and the other end of the telescopic rod (13) is rotatably connected with the second hoop (14); the second hoop (14) is arranged above the first hoop (11);

the telescopic rod (13) comprises a connecting piece (131), a locking piece (132), a sleeve (133), an adjusting rod (134), a first hanging ring (135), a bolt (136) and a nut (137), wherein the bottom end of the sleeve (133) is provided with a mounting hole communicated with the inside of the sleeve, the connecting piece (131) comprises a connecting block and a screw rod arranged on one side of the connecting block, the connecting block is rotatably connected with the second hoop (14), the screw rod penetrates into the inside of the sleeve (133) from the bottom of the sleeve (133), and the screw rod is connected with the locking piece (132), so that the relative positions of the connecting piece (131) and the sleeve (133) along the axial direction are fixed, and the connecting piece (131) can rotate relative to the sleeve (133); the periphery of the sleeve (133) is provided with a plurality of first mounting holes along the axis direction, the adjusting rod (134) is provided with a second mounting hole, the bolt (136) sequentially penetrates through the first mounting hole and the second mounting hole on one side and the first mounting hole on the other side, and the bolt (136) extends out of the screw rod part of the sleeve (133) and is screwed with the nut (137), so that the relative positions of the sleeve (133) and the adjusting rod (134) along the axis direction are fixed; the second mounting hole is arranged opposite to different first mounting holes, and the sleeve (133) and the adjusting rod (134) are fixed by a bolt (136) and a nut (137) so as to realize the adjustment of the length of the telescopic rod (13);

the lifting device (4) is an electric hoist; an adjusting chain (7) is arranged on the distribution transformer (5);

in the step 1, the installation of the hoisting frame (1) on the electric pole (2) is as follows:

step 11: the first hoop (11) and the second hoop (14) are installed on the electric pole (2) so that the first hoop (11) and the second hoop (14) are arranged in the vertical direction; and

step 12: adjusting the length of the telescopic rod (13) to enable the supporting rod (12) to be placed along the horizontal direction;

in the step 3, the distribution transformer (5) is installed on the lifting device (4), and the lifting device (4) lifts the distribution transformer (5) to the upper part of the distribution transformer cross arm (3) is that:

step 31: installing a steel wire rope (6) on the distribution transformer (5); and

step 32: installing the steel wire rope (6) on the lifting device (4);

step 33: the distribution transformer (5) is lifted to the upper part of the distribution transformer cross arm (3) at a constant speed;

step 34: pulling the adjusting chain (7) to apply a force in the horizontal direction to the distribution transformer (5) so as to enable the distribution transformer (5) to avoid the distribution transformer cross arm (3) in the vertical direction;

after the step 4, the method further comprises the following steps:

and 5: after the distribution transformer (5) is used, taking down the distribution transformer (5) from the distribution transformer cross arm (3);

the step 5 comprises the following steps:

step 51: installing a hoisting frame (1) on an electric pole (2) so that the hoisting frame (1) is positioned above the distribution transformer cross arm (3);

step 52: installing a lifting device (4) on the hoisting frame (1);

step 53: -mounting the distribution transformer (5) on the lifting device (4), the lifting device (4) lowering the distribution transformer (5) to ground;

step 54: and removing the distribution transformer (5) from the lifting device (4).

2. The method for dismounting a distribution transformer according to claim 1, wherein the step 53 of lowering the distribution transformer (5) to the ground by the lifting device (4) comprises the steps of:

step 531: and descending the distribution transformer (5) to the ground at a constant speed.

3. The method of claim 2, further comprising, after the step 53: step 53': and applying a force in the horizontal direction to the distribution transformer (5) so that the distribution transformer (5) avoids the distribution transformer cross arm (3) along the vertical direction.

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