Current transformer replacement auxiliary device

Abstract

The invention provides a current transformer replacement auxiliary device, which belongs to the technical field of current transformer replacement, and comprises a rotary supporting assembly, a bidirectional telescopic assembly, a suspension assembly and a driving assembly, the two-way telescopic assembly is installed on the upper portion of the rotary supporting assembly and can vertically rotate and horizontally rotate relative to the rotary supporting assembly, and the number of the hanging assemblies is two. Compared with the prior art, when the to-be-replaced current transformer is disassembled, the weight of an external new current transformer can be ingeniously utilized to balance the to-be-replaced current transformer, and the to-be-replaced current transformer is prevented from hitting the bottom of a switch cabinet and injuring a human body after being disassembled; meanwhile, when a new current transformer is installed, the external current transformer to be replaced can be used for balancing the new current transformer, so that the force for moving the new current transformer to the installation position is reduced, labor-saving installation is achieved, and the installation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of current transformer replacement, in particular to a current transformer replacement auxiliary device. Background Art

[0002] A current transformer is an instrument that converts a large primary current into a small secondary current for measurement based on the principle of electromagnetic induction.

[0003] At present, most current transformers are installed at designated positions on the inner wall of the switch cabinet. When the current transformer needs to be replaced, the staff needs to first remove the current transformer from the inner wall of the switch cabinet, then move the removed current transformer out of the switch cabinet, and finally move the new current transformer into the switch cabinet and install it. This method of replacing the current transformer is relatively traditional. Since the current transformer is heavy (usually about 35 kilograms), when the current transformer is removed from the inner wall of the switch cabinet, the staff often does not lift the current transformer with enough force, causing the current transformer to hit the bottom of the switch cabinet and injure the human body. Moreover, when the new current transformer is moved into the switch cabinet, the staff is also required to lift the new current transformer to the installation position at the corresponding height for installation, which makes the installation of the current transformer more time-consuming and labor-intensive. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a current transformer replacement auxiliary device.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A current transformer replacement auxiliary device comprises a rotating support component, a bidirectional telescopic component, a suspension component and a driving component. The bidirectional telescopic assembly is mounted on the upper portion of the rotating support assembly and can rotate vertically and horizontally relative to the rotating support assembly. The suspension assembly is provided with two groups, and the two groups of the suspension assemblies are respectively arranged at both ends of the bidirectional telescopic assembly, and are used to suspend the current transformer to be replaced and the new current transformer respectively. The driving assembly is installed inside the rotating support assembly and is used to drive the bidirectional telescopic assembly to extend and shorten.

[0006] As a further improvement of the present invention: the rotating support assembly comprises a support column, a box body and a bracket plate, the box body is rotatably arranged on the upper end of the support column, and the bracket plate is fixedly arranged on the upper part of the box body. The two-way telescopic assembly comprises a telescopic main cylinder and a telescopic auxiliary cylinder. The side wall of the telescopic main cylinder is rotatably connected to the bracket plate through a rotating pin. Both ends of the telescopic main cylinder are provided with a plurality of telescopic auxiliary cylinders nested in sequence from the outside to the inside. The driving assembly includes a motor, a rotating wheel and a traction rope, the rotating wheel is arranged inside the box, the motor is fixedly arranged on the side wall of the box, and is used to drive the rotating wheel to rotate. The traction rope is provided with two groups, one end of the two groups of traction ropes is wound around the outside of the rotating wheel, one end of the traction rope of one group away from the rotating wheel penetrates into the telescopic main cylinder and is connected to the innermost telescopic secondary cylinder of one group, and the other end of the traction rope of the other group away from the rotating wheel penetrates into the telescopic main cylinder and is connected to the innermost telescopic secondary cylinder of the other group.

[0007] As a further improvement of the present invention: elastic members are provided inside the telescopic main cylinder and inside the telescopic secondary cylinder, and the elastic members are used to provide elastic support for the telescopic secondary cylinder.

[0008] As a further improvement of the present invention: the two groups of suspension components have the same structure, both comprising a suspension rope, a U-shaped plate and a pin rod, One end of the suspension rope is connected to the bottom of the innermost telescopic sub-tube, and the other end is connected to the U-shaped plate. One end of the pin rod passes through one of the side walls of the U-shaped plate and extends to the inner side of the U-shaped plate. A limiting hole is provided on the other side wall of the U-shaped plate.

[0009] As a further improvement of the present invention: an internal thread is arranged on the wall of the limiting hole, and an external thread is arranged on the rod body of the pin rod located on the inner side of the U-shaped plate.

[0010] As a further improvement of the present invention: the elastic member is a spring or a metal spring.

[0011] As a further improvement of the present invention: a base is fixedly provided at the bottom of the support column, and a plurality of casters are provided at the bottom of the base.

[0012] Compared with the prior art, the present invention has the following beneficial effects: Compared with the prior art, the embodiments of the present invention can cleverly use the weight of an external new current transformer to balance the current transformer to be replaced when disassembling the current transformer to be replaced, thereby preventing the current transformer to be replaced from hitting the bottom of the switch cabinet and injuring people after being disassembled. At the same time, when installing a new current transformer, the external current transformer to be replaced can be used to balance the new current transformer to reduce the force of moving the new current transformer to the installation position, thereby achieving labor-saving installation and improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of a current transformer replacement auxiliary device Figure 1 ; Figure 2 A schematic diagram of the structure of a current transformer replacement auxiliary device Figure 2 ; Figure 3 for Figure 2 A magnified schematic diagram of the middle A area; Figure 4 for Figure 2 A magnified schematic diagram of the middle B area; In the figure: 10-rotating support assembly, 101-base, 102-castor, 103-support column, 104-box, 105-bracket plate, 20-bidirectional telescopic assembly, 201-telescopic main cylinder, 202-telescopic secondary cylinder, 203-elastic member, 30-suspension assembly, 301-suspension rope, 302-U-shaped plate, 303-pin rod, 304-limiting hole, 305-external thread, 40-driving assembly, 401-motor, 402-rotating wheel, 403-traction rope. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0016] See also Figure 1 as well as Figure 2 The present embodiment provides a current transformer replacement auxiliary device, including a rotating support assembly 10, a bidirectional telescopic assembly 20, a suspension assembly 30 and a driving assembly 40. The bidirectional telescopic assembly 20 is installed on the upper part of the rotating support assembly 10 and can rotate vertically and horizontally compared with the rotating support assembly 10. The suspension assembly 30 is provided with two groups, and the two groups of the suspension assemblies 30 are respectively arranged at both ends of the bidirectional telescopic assembly 20, for respectively suspending the current transformer to be replaced and the new current transformer. The driving assembly 40 is installed inside the rotating support assembly 10, for driving the bidirectional telescopic assembly 20 to extend and shorten.

[0017] When it is necessary to replace the current transformer inside the switch cabinet, the rotating support assembly 10 can be placed in front of the switch cabinet, and then the driving assembly 40 drives the bidirectional telescopic assembly 20 to extend. When the bidirectional telescopic assembly 20 extends, one end thereof extends into the inside of the switch cabinet, and the other end extends in a direction away from the switch cabinet. The staff mounts the suspension assembly 30 at one end of the bidirectional telescopic assembly 20 outside the switch cabinet on a new current transformer placed on the ground, and then the staff enters the switch cabinet and mounts the suspension assembly 30 at one end of the bidirectional telescopic assembly 20 inside the switch cabinet on the current transformer to be replaced. At this time, the bidirectional telescopic assembly 20 is vertically inclined on the upper part of the rotating support assembly 10 (such as Figure 1 As shown), the staff then detaches the current transformer to be replaced from the inner wall of the switch cabinet. The detached current transformer to be replaced moves downward under the action of gravity, thereby driving the bidirectional telescopic assembly 20 to rotate vertically compared to the rotating support assembly 10. When the bidirectional telescopic assembly 20 rotates vertically, its suspension assembly 30 located outside the switch cabinet lifts the new current transformer from the ground until the bidirectional telescopic assembly 20 rotates vertically to a relatively horizontal position, and the force of the current transformer to be replaced and the new current transformer is balanced. Then the driving assembly 40 drives the bidirectional telescopic assembly 20 to shorten. When the bidirectional telescopic assembly 20 shortens, its suspension assembly 30 located inside the switch cabinet drives the current transformer to be replaced to move outside the switch cabinet, and the suspension assembly 30 located outside the switch cabinet drives the new current transformer close to the switch cabinet until the current transformer to be replaced is moved out to the switch cabinet. After closing the outside of the switch cabinet, rotate the bidirectional telescopic assembly 20 so that the bidirectional telescopic assembly 20 rotates horizontally 180° about the rotating support assembly 10, thereby swapping the position of the current transformer to be replaced with the new current transformer, and then the driving assembly 40 drives the bidirectional telescopic assembly 20 to extend again, and the bidirectional telescopic assembly 20 sends the suspension assembly 30 and the new current transformer mounted thereon into the interior of the switch cabinet, and finally the staff installs the new current transformer at the corresponding position on the inner wall of the switch cabinet; during the installation process of the above-mentioned new current transformer, since the current transformer to be replaced is in a suspended state outside the switch cabinet, and then the new current transformer inside the switch cabinet is balanced, the staff only needs to apply a very small force to the new current transformer to adjust the new current transformer to the corresponding installation position, thereby improving the convenience of installing the new current transformer.

[0018] See also Figure 1 , Figure 2 as well as Figure 4In one embodiment, the rotating support assembly 10 includes a support column 103, a box body 104 and a bracket plate 105, the box body 104 is rotatably arranged on the upper end of the support column 103, the bracket plate 105 is fixedly arranged on the upper part of the box body 104, the bidirectional telescopic assembly 20 includes a telescopic main cylinder 201 and a telescopic secondary cylinder 202, the side wall of the telescopic main cylinder 201 is rotatably connected to the bracket plate 105 through a rotating pin, and a plurality of telescopic secondary cylinders 202 are arranged inside both ends of the telescopic main cylinder 201 and are nested in sequence from the outside to the inside, and the driving assembly 40 includes a motor 401, a rotating wheel 402 and a traction rope 40 3. The rotating wheel 402 is arranged inside the box body 104, and the motor 401 is fixedly arranged on the side wall of the box body 104 to drive the rotating wheel 402 to rotate. The traction rope 403 is provided with two groups, and one end of the two groups of traction ropes 403 is wound around the outside of the rotating wheel 402, one end of the traction rope 403 of one group away from the rotating wheel 402 penetrates into the telescopic main cylinder 201 and is connected to the innermost telescopic secondary cylinder 202 of one group, and the other end of the traction rope 403 of the other group away from the rotating wheel 402 penetrates into the telescopic main cylinder 201 and is connected to the innermost telescopic secondary cylinder 202 of another group.

[0019] When the staff removes the current transformer to be replaced from the inner wall of the switch cabinet, the current transformer to be replaced moves downward and drives the several telescopic sub-tubes 202 and the telescopic main tube 201 in the extended state to rotate vertically compared with the bracket plate 105, thereby bringing the new current transformer off the ground until the current transformer to be replaced is balanced with the new current transformer and is in a suspended state, and the several telescopic sub-tubes 202 are in a relatively horizontal state, and then the motor 401 drives the rotating wheel 402 to rotate, and the rotating wheel 402 reels the two sets of traction ropes 403. When the two sets of traction ropes 403 are retracted, they pull the two innermost sets of telescopic sub-tubes 202 respectively, so that the several telescopic sub-tubes 202 located at both ends of the telescopic main tube 201 shrink toward the inside of the telescopic main tube 201, thereby driving the current transformer to be replaced and the new current transformer to approach each other, and the current transformer to be replaced is moved out from the inside of the switch cabinet.

[0020] See also Figure 4 In one embodiment, an elastic member 203 is disposed inside the telescopic main cylinder 201 and inside the telescopic secondary cylinder 202 , and the elastic member 203 is used to provide elastic support for the telescopic secondary cylinder 202 .

[0021] When the current transformer to be replaced is moved to the outside of the switch cabinet, the staff can horizontally rotate the telescopic sub-tube 202 and the telescopic main tube 201. At this time, the box body 104 synchronously rotates horizontally around the support column 103. When the telescopic sub-tube 202 and the telescopic column tube 201 are horizontally rotated 180°, the position of the current transformer to be replaced is swapped with the new current transformer, and then the motor 401 drives the rotating wheel 402 to rotate in the opposite direction, thereby unwinding the two sets of traction ropes 403. When the two sets of traction ropes 403 are unwound, the corresponding elastic member 203 can push the telescopic sub-tube 202 so that the telescopic sub-tube 202 is extended compared with the telescopic main tube 201. At this time, the telescopic sub-tube 202 can send the new current transformer into the switch cabinet through the corresponding suspension assembly 30.

[0022] See also Figure 1 as well as Figure 3 In one embodiment, the two groups of suspension components 30 have the same structure, both including a suspension rope 301, a U-shaped plate 302 and a pin rod 303. One end of the suspension rope 301 is connected to the bottom of the innermost telescopic sub-tube 202, and the other end is connected to the U-shaped plate 302. One end of the pin rod 303 passes through one of the side walls of the U-shaped plate 302 and extends to the inner side of the U-shaped plate 302. A limiting hole 304 is opened on the other side wall of the U-shaped plate 302.

[0023] After the bidirectional telescopic component 20 is extended and one end thereof extends to the inside of the switch cabinet and the other end extends in a direction away from the switch cabinet, the staff can pull the U-shaped plate 302 corresponding to the suspension component 30 located outside the switch cabinet to place the U-shaped plate 302 on the upper outer side of the new current transformer, and then push the corresponding pin rod 303 so that the pin rod 303 passes through the inside of the new current transformer and is inserted into the limiting hole 304, thereby completing the suspension operation of the new current transformer. Similarly, before removing the current transformer to be replaced inside the switch cabinet, the staff can also perform the above operation so that the suspension component 30 located inside the switch cabinet suspends the current transformer to be replaced; when the new current transformer is installed at the corresponding position inside the switch cabinet, the staff can pull the corresponding pin rod 303 in the opposite direction so that one end of the pin rod 303 withdraws from the corresponding limiting hole 304, and then pull the pin rod 303 out of the inside of the new current transformer to release the suspension of the current transformer.

[0024] It should be noted that due to the presence of the suspension rope 301, the current transformer to be replaced and the new current transformer are not in an absolutely fixed state during the movement. Therefore, when the current transformer to be replaced and the new current transformer are moved, the staff needs to hold the current transformer to be replaced and the new current transformer by hand to stabilize the current transformer to be replaced and the new current transformer, thereby preventing the current transformer to be replaced and the new current transformer from colliding with the inner wall of the switch cabinet when moving.

[0025] See also Figure 3 In one embodiment, an internal thread is provided on the wall of the limiting hole 304 , and an external thread 305 is provided on the rod body of the pin rod 303 located on the inner side of the U-shaped plate 302 .

[0026] When the pin 303 passes through the inner side of the current transformer and abuts against the limiting hole 304, the staff can twist the pin 303, and one end of the pin 303 with the external thread 305 can be screwed into the limiting hole 304 and cooperate with the internal thread, thereby improving the stability of the pin 303 and improving the suspension effect of the current transformer.

[0027] In one embodiment, the elastic member 203 may be a spring or a metal spring, which is not limited here.

[0028] See also Figure 1 as well as Figure 2 In one embodiment, a base 101 is fixedly disposed at the bottom of the support column 103 , and a plurality of casters 102 are disposed at the bottom of the base 101 .

[0029] By providing the casters 102, the entire current transformer replacement auxiliary device can be flexibly moved along the ground.

[0030] Compared with the prior art, the embodiments of the present invention can cleverly use the weight of an external new current transformer to balance the current transformer to be replaced when disassembling the current transformer to be replaced, thereby preventing the current transformer to be replaced from hitting the bottom of the switch cabinet and injuring people after being disassembled. At the same time, when installing a new current transformer, the external current transformer to be replaced can be used to balance the new current transformer to reduce the force of moving the new current transformer to the installation position, thereby achieving labor-saving installation and improving installation efficiency.

[0031] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A current transformer replacement auxiliary device, characterized in that: It includes a rotating support component, a two-way telescopic component, a suspension component and a driving component. The bidirectional telescopic assembly is mounted on the upper portion of the rotating support assembly and can rotate vertically and horizontally relative to the rotating support assembly. The suspension assembly is provided with two groups, and the two groups of the suspension assemblies are respectively arranged at both ends of the bidirectional telescopic assembly, and are used to suspend the current transformer to be replaced and the new current transformer respectively. The driving assembly is installed inside the rotating support assembly and is used to drive the bidirectional telescopic assembly to extend and shorten.

2. A current transformer replacement auxiliary device according to claim 1, characterized in that: The rotating support assembly includes a support column, a box body and a bracket plate. The box body is rotatably arranged on the upper end of the support column, and the bracket plate is fixedly arranged on the upper part of the box body. The two-way telescopic assembly comprises a telescopic main cylinder and a telescopic auxiliary cylinder. The side wall of the telescopic main cylinder is rotatably connected to the bracket plate through a rotating pin. Both ends of the telescopic main cylinder are provided with a plurality of telescopic auxiliary cylinders nested in sequence from the outside to the inside. The driving assembly includes a motor, a rotating wheel and a traction rope, the rotating wheel is arranged inside the box, the motor is fixedly arranged on the side wall of the box, and is used to drive the rotating wheel to rotate. The traction rope is provided with two groups, one end of the two groups of traction ropes is wound around the outside of the rotating wheel, one end of the traction rope of one group away from the rotating wheel penetrates into the telescopic main cylinder and is connected to the innermost telescopic secondary cylinder of one group, and the other end of the traction rope of the other group away from the rotating wheel penetrates into the telescopic main cylinder and is connected to the innermost telescopic secondary cylinder of the other group.

3. A current transformer replacement auxiliary device according to claim 2, characterized in that: Elastic members are disposed inside the telescopic main cylinder and inside the telescopic secondary cylinder, and the elastic members are used to provide elastic support for the telescopic secondary cylinder.

4. A current transformer replacement auxiliary device according to claim 2, characterized in that: The two groups of suspension components have the same structure, and both include a suspension rope, a U-shaped plate and a pin rod. One end of the suspension rope is connected to the bottom of the innermost telescopic sub-tube, and the other end is connected to the U-shaped plate. One end of the pin rod passes through one of the side walls of the U-shaped plate and extends to the inner side of the U-shaped plate. A limiting hole is provided on the other side wall of the U-shaped plate.

5. A current transformer replacement auxiliary device according to claim 4, characterized in that: The hole wall of the limiting hole is provided with an internal thread, and the rod body of the pin rod located on the inner side of the U-shaped plate is provided with an external thread.

6. A current transformer replacement auxiliary device according to claim 3, characterized in that: The elastic member is a spring or a metal spring.

7. A current transformer replacement auxiliary device according to claim 2, characterized in that: A base is fixedly arranged at the bottom of the support column, and a plurality of casters are arranged at the bottom of the base.

Images