Supporting device and tool for butt joint of closing resistors

Abstract

The supporting device comprises a base, the four corners of the base are each rotationally provided with a moving wheel, the moving wheels are arranged obliquely downwards, a shell is fixedly installed on the base, a supporting block is arranged in the shell in a sliding mode, the bottom of the supporting block is connected with a lifting unit, and the top of the supporting block extends out of the shell outwards; the top of the supporting block is in a V shape and can support and limit the closing resistor and limit swing of the closing resistor, the lifting unit is installed on the base and can adjust the height of the closing resistor, and the obliquely-arranged moving wheels give force towards the axis of a circuit breaker tank body to the base in the moving process. The moving path of the base is parallel to the axis of the circuit breaker tank all the time, deviation of the moving path is avoided, centering can be achieved only by adjusting the height of the closing resistor through the lifting unit, butt joint is facilitated, and the butt joint efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage electrical auxiliary equipment, in particular to a supporting device and tooling for connecting a closing resistor. Background Art

[0002] In high-voltage transmission lines, when closing unloaded long lines, especially when the power supply voltage amplitude and the line residual voltage are reversed, the system parameters will suddenly change, and the LC electromagnetic energy oscillation on the lines in the power grid may cause a large overvoltage. In order to suppress this closing overvoltage, in high-voltage lines, it is generally necessary to connect a closing resistor in parallel to the switch device. The closing resistor is used in advance to absorb part of the electric energy in the power grid and convert it into heat energy, so as to achieve the purpose of weakening electromagnetic oscillation and suppressing overvoltage.

[0003] In order to improve the docking efficiency and accuracy of the closing resistor, a supporting device for docking the closing resistor of the circuit breaker has appeared (publication number CN201611638U). Universal wheels, a height adjustment device and a lifting roller are arranged on the chassis. The docking installation of the closing resistor of the high-voltage circuit breaker is completed by adjusting the universal wheels, the height adjustment device and the rollers.

[0004] The existing closing resistor supporting device adopts a universal wheel. Since the closing resistor is installed in the circuit breaker tank, which is cylindrical, the use of the universal wheel is very likely to cause position deviation during its movement, especially when two supporting devices are used in combination, the movement path is difficult to control, and the closing resistor is very likely to collide. In addition, its lifting device is a combination of multiple guide columns and multiple sleeves, and the lifting process has poor stability and is prone to tilting and jamming. Utility Model Content

[0005] In order to solve the technical problem that the moving path of the existing closing resistor in the above-mentioned background technology is difficult to control and is very likely to deviate, the utility model provides a supporting device and tooling for connecting the closing resistor.

[0006] The technical solution of this utility model is as follows:

[0007] The utility model provides a support device for closing resistor docking, comprising: a base, four corners of the base are respectively rotatably provided with a moving wheel, the moving wheel is obliquely arranged downward, a shell is fixedly installed on the base, a support block is slidably arranged in the shell, the bottom of the support block is connected with a lifting unit, the top of the support block extends out of the shell, the top of the support block is V-shaped, the lifting unit is installed on the base, the support block with the V-shaped top can support and limit the closing resistor, limit the swing of the closing resistor, the lifting unit can adjust the height of the closing resistor, the inclined moving wheel gives the base a force toward the axis of the circuit breaker tank body during the movement, so that the moving path of the base is always parallel to the axis of the circuit breaker tank body, avoids the deviation of the moving path, and can be centered by adjusting the height of the closing resistor by the lifting unit, which is convenient for docking and improves the docking efficiency.

[0008] Preferably, the interior of the shell is a rectangular installation space, and the support block includes a guide part and a support part. The guide part is a rectangular block structure, and the side wall of the guide part is in contact with the inner wall of the shell. The support part is fixedly arranged on the top of the guide part, and the support part is a V-shaped structure. The cooperation between the guide part and the shell plays a role of guiding and limiting, thereby avoiding tilting and jamming during the vertical movement of the support block.

[0009] Preferably, a limiting unit is provided on the supporting portion, and the limiting unit can be used to increase the friction between the supporting portion and the closing resistor to limit the axial movement of the closing resistor.

[0010] Preferably, the limiting unit is a hemispherical structure, a plurality of limiting units are fixedly arranged on the supporting portion, and anti-slip grooves are arranged on the surfaces of the limiting units.

[0011] Preferably, the limiting unit is a roller structure, and a plurality of limiting units are rotatably arranged on the support portion via a rotating shaft, and a non-slip layer is provided on the surface of the roller.

[0012] Preferably, a connection hole is provided at the bottom of the support block, and the top end of the lifting unit is inserted into the connection hole, which effectively ensures the connection stability between the support block and the lifting unit.

[0013] The utility model provides a tool, comprising: a lifting device and a supporting device, wherein the lifting device and the supporting device are respectively connected to one end of a closing resistor, thereby preventing mutual interference between the two supporting devices and avoiding the path deviation problem when the two supporting devices move synchronously.

[0014] It can be seen from the above technical solutions that the advantages of the utility model are:

[0015] 1. The V-shaped support block on the top can support and limit the closing resistor to limit the swing of the closing resistor. The lifting unit can adjust the height of the closing resistor. The tilted moving wheel gives the base a force toward the axis of the circuit breaker tank during movement, so that the moving path of the base is always parallel to the axis of the circuit breaker tank to avoid the deviation of the moving path. The closing resistor and the conductor can be aligned only by adjusting the height of the closing resistor through the lifting unit, which facilitates docking and improves docking efficiency.

[0016] 2. The interior of the shell is a rectangular installation space, and the guide part is a rectangular block structure. The side wall of the guide part fits the inner wall of the shell. Through the cooperation between the guide part and the shell, it plays a role of guiding and limiting, avoiding the phenomenon of tilting and jamming during the vertical movement of the support block.

[0017] 3. The setting of the limit unit can increase the friction between the support block and the closing resistor, so as to limit the axial movement of the closing resistor.

[0018] 4. The lifting device and the supporting device are respectively connected to one end of the closing resistor, which prevents the mutual interference of the two supporting devices and avoids the path deviation problem when the two supporting devices move synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the main structure of the support device according to one or more embodiments of the present invention (in use);

[0021] Figure 2 A schematic diagram of the use of a tool for connecting a closing resistor according to one or more embodiments of the present utility model;

[0022] The components represented by the reference numerals in the figure are:

[0023] 1. Closing resistor; 2. Support block; 21. Limit unit; 3. Shell; 4. Base; 5. Moving wheel; 6. Lifting unit; 7. Circuit breaker tank; 8. Lifting device. DETAILED DESCRIPTION

[0024] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0025] Example 1

[0026] In a typical implementation of the present invention, Figure 1 As shown, a support device for connecting a closing resistor is proposed, comprising: a rectangular plate-shaped base 4, a moving wheel 5 and a support assembly installed on the base 4, wherein a moving wheel 5 is rotatably provided at each of the four corners of the base 4, the support assembly is installed on the base 4, and a lifting unit 6 is also installed on the base 4. The lifting unit 6 is located below the support assembly and can drive the support assembly to perform lifting movements through the lifting unit 6.

[0027] Specifically, there are four moving wheels 5, which are rotatably arranged at the four corners of the base 4, and the four moving wheels 5 are all arranged obliquely downward, and the moving wheels 5 located on both sides of the moving direction of the base 4 are symmetrically arranged, such as Figure 1 As shown, there is an acute angle between the axis of the moving wheel 5 and the center line of the base 4, and the distance between the tops of the two moving wheels 5 on both sides of the moving direction is smaller than the distance between the bottoms, which can adapt to the arc-shaped inner wall of the circuit breaker tank 7. During the movement, the moving wheel 5 gives the base 4 a force toward the axis of the circuit breaker tank 7, so that the moving path of the base 4 is always parallel to the axis of the circuit breaker tank 7, avoiding the deviation of the moving path.

[0028] It can be understood that, in the present embodiment, the inclination angle of the moving wheel 5 is 45°, and in other embodiments, the moving wheel 5 may also be at other angles, which can be determined according to actual design requirements, and no excessive restrictions are imposed here.

[0029] It should be noted that the moving wheel 5 in this embodiment is a one-way wheel and does not use a universal wheel structure to prevent the moving direction from changing.

[0030] The support assembly includes a support block 2 and a shell 3. The shell 3 is fixed on the base 4 by welding or bolting. The top of the shell 3 is open. The support block 2 is slidably set in the shell 3. The bottom of the support block 2 is connected to the lifting unit 6. The top of the support block 2 extends out of the shell 3 to support the closing resistor 1.

[0031] The support block 2 is slidably arranged in the shell 3, and the cross-sectional shape and size of the support block 2 match the internal cross-sectional shape and size of the shell 3. Specifically, the interior of the shell 3 is a rectangular installation space. The support block 2 includes a guide portion and a support portion. The guide portion is a rectangular block structure. The side wall of the guide portion is in contact with the inner wall of the shell 3. The shell 3 not only plays a protective role, but also plays a guiding and limiting role to avoid tilting and jamming during the vertical movement of the support block 2. The support portion is fixedly arranged on the top of the guide portion. The support portion is a V-shaped structure, which is used to support and limit the closing resistor 1.

[0032] The V-shaped support portion can limit the swing of the closing resistor 1, which is convenient for controlling the axial position of the closing resistor 1. In order to further limit the axial movement of the closing resistor 1, a limit unit 21 is set on the support portion. In this embodiment, the limit unit 21 is a hemispherical structure. Several limit units 21 are fixed on the support portion by welding or integral molding. When the closing resistor 1 is moved and docked, a rubber layer will be coated on the outside of the closing resistor 1 to protect the closing resistor 1. Several anti-skid grooves are provided on the surface of the limit unit 21 to increase the resistance through the cooperation of the anti-skid grooves and the rubber layer, thereby limiting the axial movement of the closing resistor 1.

[0033] In other embodiments, the limiting unit 21 may also be a roller structure, and a plurality of limiting units 21 are rotatably arranged on the support portion through a rotating shaft. The surface of the roller is provided with an anti-slip layer and other structures. The closing resistor 1 is supported by the roller to limit the axial movement of the closing resistor 1.

[0034] It is understandable that the specific structure and configuration of the limiting unit 21 can be selected according to actual needs, and no excessive restrictions are imposed here.

[0035] The lifting unit 6 is used to control the vertical movement of the support block 2. In this embodiment, the lifting unit 6 is an M16 bolt structure. The lifting unit 6 is threadedly connected to the base 4. The top of the lifting unit 6 contacts the bottom of the support block 2, thereby supporting and pushing the support block 2. In order to improve the connection stability between the lifting unit 6 and the support block 2, a connection hole is provided at the bottom of the support block 2, and the top of the lifting unit 6 is inserted into the connection hole;

[0036] In other embodiments, the lifting unit 6 may also be a structure such as a hand-cranked jack. The specific structural form of the lifting unit 6 can be selected according to actual needs, and no excessive restrictions are made here.

[0037] Example 2

[0038] In a typical implementation of the present invention, Figure 2As shown, a tooling for connecting a closing resistor is proposed, comprising: the supporting device and the lifting device 8 mentioned in Example 1, wherein the supporting device is located below the front end of the closing resistor 1 to support and guide the front end of the closing resistor 1; the lifting device 8 is located at the rear end of the closing resistor 1 to lift and support the rear end of the closing resistor 1.

[0039] It should be noted that the front end and the rear end described in this embodiment are based on the moving direction of the closing resistor 1.

[0040] The specific working principle is:

[0041] Place the support device inside the circuit breaker tank 7, ensure that the base 4 is placed horizontally, and slide along the inner wall of the circuit breaker tank 7, and ensure that the sliding track does not interfere with other positions;

[0042] Then, the front end of the closing resistor 1 is placed on the supporting block 2, and the lifting device 8 lifts and supports the rear end of the closing resistor 1. The lifting device 8 is used to drive the closing resistor 1 to move into the circuit breaker tank 7. The supporting device moves synchronously with the closing resistor 1. After the closing resistor 1 is close to the conductor seat, the lifting unit 6 is adjusted to ensure that the closing resistor 1 is aligned with the center of the conductor, and then the closing resistor 1 is moved to complete the docking;

[0043] After the docking is completed, the lifting unit 6 is lowered to reduce the height of the support block 2 and the support device is taken out from the circuit breaker tank 7 .

[0044] It can be understood that the bottom of the circuit breaker tank body 7 contains a hand hole for maintenance and other operations. When adjusting the lifting unit 6, it can be done from the hand hole at the bottom of the circuit breaker tank body 7. The lifting device 8 is a traveling structure that can ensure the stability of the moving path under the guidance of the track.

[0045] In this embodiment, only one supporting device is used, and one end of the closing resistor 1 is hoisted and supported by the hoisting device 8, which prevents the mutual interference of the two supporting devices and avoids the path deviation problem when the two supporting devices move synchronously.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A support device for connecting a closing resistor, comprising: The base (4) is characterized in that a movable wheel (5) is rotatably provided at each of the four corners of the base (4), the movable wheel (5) is arranged obliquely downward, a shell (3) is fixedly installed on the base (4), a support block (2) is slidably provided in the shell (3), the bottom of the support block (2) is connected to the lifting unit (6), the top of the support block (2) extends outward from the shell (3), the top of the support block (2) is V-shaped, and the lifting unit (6) is installed on the base (4).

2. A closing resistor connection support device according to claim 1, characterized in that: The interior of the shell (3) is a rectangular installation space. The support block (2) comprises a guide portion and a support portion. The guide portion is a rectangular block structure. The side wall of the guide portion is in contact with the inner wall of the shell (3). The support portion is fixedly arranged on the top of the guide portion. The support portion is a V-shaped structure.

3. A closing resistor connection support device according to claim 2, characterized in that: A limiting unit (21) is provided on the supporting part.

4. A closing resistor connection support device according to claim 3, characterized in that: The limiting unit (21) is a hemispherical structure, a plurality of limiting units (21) are fixedly arranged on the support portion, and the surface of the limiting unit (21) is provided with an anti-slip groove.

5. A closing resistor connection support device according to claim 3, characterized in that: The limiting unit (21) is a roller structure, and a plurality of limiting units (21) are rotatably arranged on the support portion via a rotating shaft, and an anti-slip layer is arranged on the surface of the roller.

6. A closing resistor connection support device according to claim 1, characterized in that: The bottom of the support block (2) is provided with a connection hole, and the top end of the lifting unit (6) is inserted into the connection hole.

7. A tool, characterized in that: include: A lifting device (8) and a supporting device for connecting a closing resistor (1) as claimed in any one of claims 1 to 6, wherein the lifting device (8) and the supporting device are respectively connected to one end of the closing resistor (1).

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