CN205282436U - Install the insulation cylinder of the fuse and the handcart and power distribution cabinet using the insulation cylinder - Google Patents

Abstract

The utility model relates to an insulating cylinder for installing a fuse and a handcart and a power distribution cabinet using the insulating cylinder. An insulating cylinder comprises a cylinder whose length extends along the Z direction. The cylinder wall of the cylinder is provided with an insulating The inner hole of the cylinder is connected with the installation hole for the fuse to be installed from the outside to the inside along the Y direction, and the two ends of the Z direction of the installation hole are provided on the cylinder for fixing the fuse installed from the outside to the inside along the Y direction. The first connection structure and the second connection structure of the first and second end seats of the fuse. When disassembling the fuse, it is only necessary to separate the two ends of the fuse from the mounting hole on the outside of the insulating cylinder, and take out the fuse along the Y direction. When installing the fuse, just push the two ends of the fuse into the first and second end seats of the fuse along the Y direction from the mounting hole on the outside of the insulating cylinder, eliminating the need for The space reserved in the inner cavity of the insulating cylinder for the arm or device to extend into and install and disassemble the fuse reduces the volume of the insulating cylinder.

Description

Install the insulation cylinder of the fuse and the handcart and power distribution cabinet using the insulation cylinder

technical field

The utility model relates to medium-voltage power supply and distribution equipment, in particular to an insulating cylinder for installing a fuse, a handcart and a power distribution cabinet using the insulating cylinder.

Background technique

Metal-enclosed switchgear is widely used in medium-voltage distribution network systems. At present, the main switch of the removable switchgear adopts a handcart structure, and the handcart includes a contact arm. At present, the fuse is generally arranged in the insulating contact arm or exposed in the inner space of the power distribution cabinet. The utility model patent of the Chinese patent CN2606480Y is disclosed A handcart for fuse lightning arresters matched with high-voltage switchgear, including a hollow insulating bracket with upper and lower openings, the fuse is installed in the inner cavity of the insulating bracket along the axis, the insulating bracket includes an insulating cylinder, an upper arm and a lower The upper and lower arms are respectively connected with conductive contacts, the upper end of the fuse is conductively connected to the upper contact through the upper wire embedded in the upper arm, and the lower end of the fuse is electrically connected to the upper contact through the upper end embedded in the lower arm. The lower wire in the support arm is conductively connected to the lower contact, and the arrester is electrically connected to the upper wire through the wire buried in the insulating support. The insulating support has two upper and lower arms and needs to be installed in the upper and lower arms and on the insulating support body The channel for embedding wires is set up, the structure is complex, and the fuse needs to be inserted or taken out from the axial opening of the insulating bracket when installing and removing the fuse. The space for installing and removing the fuse is inserted, so the insulating bracket is bulky.

Utility model content

In order to solve the above problems, the utility model provides an insulating cylinder that can avoid the space reserved for the installation and removal of the fuse for the arm or device to extend into. At the same time, the purpose of the utility model is to provide a The handcart and distribution cabinet of the insulating tube.

An insulating cylinder of the utility model adopts the following technical scheme: an insulating cylinder, including a cylinder body whose length extends along the Z direction, and a cylinder wall of the cylinder body is provided with a fuse for communicating with the inner hole of the cylinder along the Y direction. The installation hole installed from the outside to the inside in the direction of the cylinder, the two ends of the installation hole in the Z direction are provided with the first and second end blocks for fixing the first and second end seats of the fuse installed from the outside to the inside along the Y direction. A connection structure and a second connection structure.

The first connection structure is a first slug arranged on the wall of the barrel, and the first end seat of the fuse includes a thickness extending along the Y direction that is in close contact with the outer surface of the first slug to stop the first end seat of the fuse. The first end seat flap of the fuse that moves to the inside of the barrel, the outer surface of the first slug is provided with a screw mounting hole for fixedly connecting the axis of the first end seat flap of the fuse along the Y direction.

The second connection structure is a boss arranged symmetrically on the inner wall of the cylinder along the X direction, and the second end seat of the fuse includes a bottom end surface of the boss whose thickness extends along the Z direction and is in close contact with the lower end surface of the boss so as to block the second end of the fuse. The flip plate of the second end seat of the fuse that the two end seats move upward, and the boss is provided with a screw connection hole fixedly connected to the axis of the flip plate of the second end seat of the fuse along the Z direction.

A drive wheel installation through hole for installing the drive wheel shaft is opened on the cylinder along the X direction.

The shape of the insulating cylinder is a flat cylindrical structure whose length in the Y direction is greater than that in the X direction.

The insulating cylinder also includes a base, and a third connection structure for fixing the insulating cylinder to the vehicle frame is arranged on the base.

A handcart of the present utility model adopts the following technical scheme: a handcart, including a vehicle frame, an insulating cylinder arranged on the vehicle frame, and a fuse installed on the insulating cylinder, and the insulating cylinder includes a length along the Z-direction Extended cylinder, the cylinder wall is provided with a mounting hole connected to the inner hole of the cylinder for the fuse to be installed from outside to inside along the Y direction, and the cylinder is located on both sides of the Z direction of the installation hole. The end is provided with a first connection structure and a second connection structure for fixing the first and second end seats of the fuse installed from outside to inside along the Y direction.

The first connection structure is a first slug arranged on the wall of the cylinder, and the first end seat of the fuse includes a mounting groove for installing the fuse sunk into the inner hole of the cylinder and a thickness extending along the Y direction with the second end seat. The outer surface of an slug is tightly attached to stop the fuse first end seat flap from moving to the inside of the cylinder, and the outer surface of the first slug is provided with a first fuse for fixed connection. The axis of the end seat flap is along the Y-direction screw mounting hole; the second connection structure is a boss symmetrically arranged on the inner wall of the cylinder along the X-direction, and the second end seat of the fuse includes a thickness extending along the Z-direction The flip plate of the second end seat of the fuse that is close to the lower end surface of the boss to stop the second end seat of the fuse from moving upward. Hole for screw connection in Z direction.

A power distribution cabinet of the utility model adopts the following technical scheme: a power distribution cabinet includes a handcart, the handcart includes a vehicle frame, an insulating cylinder arranged on the vehicle frame and a fuse installed on the insulating cylinder, The insulating cylinder includes a cylinder whose length extends along the Z direction. The cylinder wall of the cylinder is provided with a mounting hole that communicates with the inner hole of the cylinder for the fuse to be installed from the outside to the inside along the Y direction. The cylinder A first connection structure and a second connection structure for fixing the first and second end blocks of the fuse installed from outside to inside along the Y direction are provided on the Z-direction ends of the mounting hole on the body.

The first connection structure is a first slug arranged on the wall of the cylinder, and the first end seat of the fuse includes a mounting groove for installing the fuse sunk into the inner hole of the cylinder and a thickness extending along the Y direction with the second end seat. The outer surface of an slug is tightly attached to stop the fuse first end seat flap from moving to the inside of the cylinder, and the outer surface of the first slug is provided with a first fuse for fixed connection. The axis of the end seat flap is along the Y-direction screw mounting hole; the second connection structure is a boss symmetrically arranged on the inner wall of the cylinder along the X-direction, and the second end seat of the fuse includes a thickness extending along the Z-direction The flip plate of the second end seat of the fuse that is close to the lower end surface of the boss to stop the second end seat of the fuse from moving upward. Hole for screw connection in Z direction. The beneficial effects of the utility model are as follows: an insulating cylinder, including a cylinder whose length extends along the Z direction, and the cylinder wall of the cylinder is provided with a fuse for communicating with the inner hole of the insulation cylinder along the Y direction. To the installation hole installed inside, the cylinder is located at both ends of the Z direction of the installation hole, and is used to fix the first connecting structure and the second end seat of the fuse installed from outside to inside along the Y direction. Two connection structure, when removing the fuse, you only need to separate the two ends of the fuse from the fuse end seat from the mounting hole on the outside of the insulating cylinder, and take out the fuse from the Y direction. When installing the fuse, also install it from the outside of the insulating cylinder. Just push the two ends of the fuse into the first and second end seats of the fuse along the Y direction at the hole, which saves the arm or device that is reserved in the inner cavity of the insulating cylinder in the prior art. There is more space for installing and removing the fuse, which reduces the volume of the insulating cylinder.

Description of drawings

Fig. 1 is a structural schematic diagram of a handcart in an embodiment of a power distribution cabinet of the present invention;

Figure 2 is a schematic diagram of the assembly of the insulating cylinder, the isolating switch and the fuse;

Figure 3 is a schematic diagram of the connection structure between the disconnecting switch and the fuse;

Fig. 4 is a structural schematic diagram of the insulating cylinder.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings. As shown in Figures 1-4, a power distribution cabinet includes a handcart, and the handcart includes a vehicle frame 8 and a mechanism box 1 installed on the vehicle frame 8. , Insulation cylinder 5, isolating switch 3, voltage transformer 7, fuse 6 and lightning arrester 2. The length of the insulating cylinder 5 extends along the Z direction. In this embodiment, the Z direction is the up and down direction. Of course, in other embodiments, the Z direction can also be other directions. The insulating cylinder 5 includes a cylinder body, a base and a cylinder cover 4. The cylinder wall of the insulation cylinder 5 is provided with a mounting hole communicating with the inner hole of the cylinder for the corresponding fuse 6 to be installed from the outside to the inside along the Y direction. The cylinder body The two ends of the installation hole in the Z direction are provided with a first connection structure and a second connection structure for fixing the first fuse end seat 63 and the second fuse end seat 62 installed from the outside to the inside along the Y direction. The first connecting structure is a first slug 53 arranged on the wall of the cylinder, and the first end seat 63 of the fuse includes a mounting groove for installing the fuse sunk into the inner hole of the cylinder and a groove extending along the Y direction with a thickness The outer surface of the first slug 53 is in close contact with the flip plate of the first end seat of the fuse to stop the first end seat 63 of the fuse from moving to the inside of the cylinder. The outer surface of the first slug 53 is provided with a The axis of the flip plate of the first end seat of the fuse is the screw installation hole along the Y direction, the second connection structure is a boss 52 symmetrically arranged on the inner wall of the cylinder along the X direction, and the second end seat of the fuse 62 It includes a fuse second end seat flip plate whose thickness extends along the Z direction and is in close contact with the lower end surface of the boss 52 to stop the upward movement of the second fuse end seat 62. The boss 52 is provided with a fixed connection fuse A screw connection hole where the axis of the second end seat flap is along the Z direction.

A contact mechanism that moves in the Z direction is installed inside the insulating cylinder, and the contact mechanism is composed of an isolating switch 3. The isolating switch 3 includes a movable conductive rod 31 arranged along the Z direction and drives the movable conductive rod 31 to move up and down. To connect and disconnect the operating mechanism of the handcart and the conductive circuit of the power distribution cabinet, the isolating switch 3 also includes a conductive seat that is slidably connected to the movable conductive rod 31, that is, the static end conductive clip 61, and the movable conductive rod 31 It is machined from aluminum material. The lower end of the movable conductive rod 31 is provided with a rectangular protrusion, which is used to cooperate with the conductive clip 61 of the static end to connect the circuit. A fuse 6 is provided between the conductive seat and the voltage transformer 7. The static end conductive clip 61 is integrated with the second fuse end base 62 . Of course, in other embodiments, the fuse second end base 62 and the static end conductive clip 61 may not be integrally designed, or may be connected by bolts.

The first installation hole 51 for installing the transmission wheel 32 is opened on the left and right planes of the outer wall of the upper end of the insulating cylinder. The transmission wheel 32 whose axis extends along the X direction and is driven by the operating mechanism is arranged in the insulating cylinder 5. The transmission wheel 32 is connected to the moving conductive rod 31 by transmission to drive the moving conductive rod 31 to move up and down, the drive wheel 32, the moving conductive rod 31 and the fuse 6 are arranged in sequence along the Y front and back, and the shape of the insulating cylinder is that the side wall in the X direction is a plane 1. The Y-direction side wall is a flat cylindrical structure with a circular surface. Of course, in other embodiments, the insulating cylinder can also be a cylindrical structure.

The lower part of the inner cavity of the insulating cylinder 5 is provided with an umbrella skirt on the inner and outer walls of the insulating cylinder to ensure the insulation level. In other embodiments, the second insert 54 may not be provided, and the base of the insulating cylinder is fixedly connected to the frame of the handcart by means of bolts. The upper end of the insulating cylinder is provided with an insulating cylinder cover 4 to shield the conductive parts inside the insulating cylinder. Protecting and guiding the moving conductive rod 31 in the Z direction. In the utility model, both the fuse and the isolating switch are installed inside the insulating cylinder, which is shielded and protected by the insulating cylinder, and the insulation reliability is high. The fuse 6 includes a fuse tube 64, the second end seat 62 of the fuse and the first end seat 63 of the fuse respectively have an opening for pushing the fuse tube 64 in and out along the Y direction, when the fuse tube 64 needs to be replaced , you only need to pry the upper and lower ends of the fuse tube 64 to separate from the first and second ends of the fuse, and take out the fuse from the Y direction. When installing the fuse, you only need to put the two ends of the fuse tube 64 along the Push it into the first and second end seats of the fuse in the Y direction. A conductive bar 13 electrically connected to the arrester 2 is arranged above the second end seat 62 of the fuse, and the conductive seat and the conductive bar 13 are fixed on the boss 52 on the inner wall of the insulating cylinder by bolts, and the conductive bar 13 is provided with a There is a moving conductive rod mounting hole for the moving conductive rod 31 to be worn and conductively connected with the static end conductive clip 61 .

In this embodiment, three insulating cylinders and corresponding three voltage transformers are provided. The three insulating cylinders are arranged on the vehicle frame 8 at left and right intervals, and the three voltage transformers are arranged on the vehicle frame 8 at left and right intervals. The three voltage transformers Arranged in parallel with the front and rear directions of the three insulating cylinders, the primary side incoming line of the voltage transformer 7 is connected with the lower end seat 63 of the fuse 6 through a copper bar, and the outgoing line side of the voltage transformer 7 is shorted together with a copper bar, and in A resonance eliminator is connected in series between the three voltage transformers. Of course, in other embodiments, the number of insulating cylinders and voltage transformers can be adjusted according to actual needs.

The lightning arrester 2 is installed on the lightning arrester mounting plate 9 above the voltage transformer 7. One end of the lightning arrester mounting plate 9 is fixedly connected to the mechanism box 1, and the other end is supported and connected by an insulating support 10 arranged on the vehicle frame. The lightning arrester 2 includes a grounding terminal and the high-voltage side terminal, the ground terminal of the arrester 2 is fastened to the arrester mounting plate 9 by bolts, and is grounded in series with a copper bar, the high-voltage side terminal of the arrester 2 is connected to the second end seat 62 of the fuse Bolted together via wire strips. Since the arrester 2 is installed above the handcart, and both ends are connected in a detachable manner, when replacing the arrester 2, it is only necessary to remove the nuts at both ends of the arrester 2, which is convenient for replacement. Of course, in other embodiments, both ends of the lightning arrester mounting plate can be supported and fixed by insulating pillars.

The transmission wheel in this embodiment is a worm gear installed inside the insulating cylinder and installed on the first mounting hole 51 , and a worm part that cooperates with the worm gear transmission is provided on the moving conduction rod. In other embodiments of the present utility model, the transmission wheel may also be a gear, and at this time, a rack portion meshing with the gear is provided on the moving conduction rod.

An embodiment of a handcart is the same as the embodiment of the handcart in each embodiment of the above-mentioned power distribution cabinet, and will not be repeated here.

An embodiment of an insulating cylinder is the same as the embodiment of the insulating cylinder in each embodiment of the above-mentioned power distribution cabinet, and will not be repeated here.

Claims (10)

1. An insulating cylinder, including a cylinder body whose length extends along the Z direction, characterized in that: the cylinder wall of the cylinder body is provided with a fuse that communicates with the inner hole of the cylinder body from the outside to the inside along the Y direction. The installation hole of the cylinder body is located at both ends of the Z direction of the installation hole, and is provided with a first connection structure and a second connection structure for fixing the first and second end seats of the fuse installed from the outside to the inside along the Y direction. . 2. An insulating cylinder according to claim 1, characterized in that: the first connection structure is a first slug provided on the cylinder wall, and the first end seat of the fuse includes a and The outer surface of the first slug is in close contact with the flip plate of the first end seat of the fuse to stop the first end seat of the fuse from moving to the inside of the cylinder. A screw mounting hole where the axis of an end seat flap is along the Y direction. 3. An insulating cylinder according to claim 1, characterized in that: the second connection structure is a boss symmetrically arranged on the inner wall of the cylinder along the X direction, and the second end seat of the fuse includes a thickness along the The flip plate of the second end seat of the fuse extending in the Z direction and closely attached to the lower end surface of the boss to stop the second end seat of the fuse from moving upward, the boss is provided with a flap fixedly connected to the second end seat of the fuse The axis of the screw connection hole is along the Z direction. 4 . The insulating cylinder according to claim 1 , wherein a drive wheel installation through hole for installing the drive wheel shaft is opened on the cylinder body along the X direction. 5 . 5 . The insulation cylinder according to claim 1 , wherein the shape of the insulation cylinder is a flat cylindrical structure whose length in the Y direction is greater than that in the X direction. 6 . 6 . The insulating cylinder according to claim 1 , wherein the insulating cylinder further comprises a base, and the base is provided with a third connecting structure for fixing the insulating cylinder to the vehicle frame. 7 . 7. A handcart, comprising a vehicle frame, an insulating cylinder arranged on the vehicle frame, and a fuse installed on the insulating cylinder, the insulating cylinder comprising a cylinder whose length extends along the Z direction, characterized in that: the The cylinder wall of the cylinder is provided with a mounting hole that communicates with the inner hole of the cylinder for the fuse to be installed from the outside to the inside along the Y direction. The first connection structure and the second connection structure of the first and second end blocks of the fuse installed from outside to inside. 8. A handcart according to claim 7, characterized in that: the first connection structure is a first slug provided on the wall of the cylinder, and the first end seat of the fuse is sunk into the inner hole of the cylinder The installation groove for installing the fuse and the first fuse end seat flip plate whose thickness extends along the Y direction and is in close contact with the outer surface of the first slug to stop the first end seat of the fuse from moving to the inside of the cylinder, The outer surface of the first slug is provided with a screw installation hole for fixedly connecting the axis of the flip plate of the first end seat of the fuse along the Y direction; the second connection structure is symmetrically arranged on the inner wall of the cylinder along the X direction The second end seat of the fuse has a thickness extending along the Z direction and is in close contact with the lower end surface of the boss to stop the second end seat of the fuse from moving upwards. A screw connection hole for fixedly connecting the axis of the flip plate of the second end seat of the fuse along the Z direction is provided on the boss. 9. A power distribution cabinet, including a handcart, the handcart includes a frame, an insulating cylinder arranged on the frame and a fuse installed on the insulating cylinder, and the insulating cylinder includes a cylinder whose length extends along the Z direction It is characterized in that: the cylinder wall of the cylinder is provided with a mounting hole connected to the inner hole of the cylinder for the fuse to be installed from the outside to the inside along the Y direction, and the cylinder is located in the Z direction of the installation hole. Both ends are provided with a first connection structure and a second connection structure for fixing the first and second end blocks of the fuse installed from outside to inside along the Y direction. 10. A power distribution cabinet according to claim 9, characterized in that: the first connection structure is a first insert provided on the wall of the cylinder, and the first end seat of the fuse includes a hole sunk into the inner hole of the cylinder The installation groove for installing the fuse and the first fuse end seat flip plate whose thickness extends along the Y direction and is in close contact with the outer surface of the first slug to stop the first end seat of the fuse from moving to the inside of the cylinder , the outer surface of the first slug is provided with a screw installation hole for fixedly connecting the axis of the first end seat flap of the fuse along the Y direction; the second connection structure is symmetrically arranged on the inner wall of the cylinder along the X direction The second end seat of the fuse includes a flip plate of the second end seat of the fuse whose thickness extends along the Z direction and is in close contact with the lower end surface of the boss to stop the second end seat of the fuse from moving upwards. The boss is provided with a screw connection hole fixedly connected to the axis of the flip plate of the second end seat of the fuse along the Z direction.