Contact seat assembly tool

Abstract

The invention relates to a contact seat assembly tool which comprises a positioning frame, the positioning frame comprises a bottom plate used for being fixedly connected with a flange at the upper end of a mutual inductor, the bottom plate is provided with a frame body, the frame body is provided with an open structure used for assembling personnel to fasten and install a contact seat on an electric connecting rod, and the top of the frame body is provided with a positioning seat. A positioning through hole is formed in the positioning seat, the contact seat assembly tool further comprises a positioning rod which is arranged in the positioning through hole in a sliding and penetrating mode, and the position of the positioning through hole and the orientation of the axis meet the requirement that when the contact seat is fixedly connected to the electric connecting rod in an accurate posture, the positioning rod can be matched with the contact seat in a matched and inserted mode. According to the contact seat assembly tool, the bent diameter cylinder does not need to be repeatedly assembled and disassembled, the situation that the sealing performance of a product is easily damaged due to the fact that the bent diameter cylinder is repeatedly disassembled and assembled is avoided, the bent diameter cylinder and adjacent assembly faces are abraded due to repeated assembly, and meanwhile the assembly efficiency can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, and in particular to a contact seat assembly tool. Background Art

[0002] LW55S-252 tank type circuit breaker belongs to the circuit breaker product of 252 kV voltage level. Its main structure is divided into moving contact and static contact seat assembly and moving contact assembly. The outlet bushing is connected to both ends of the contact seat, and a conductive rod is installed inside. In order to meet the break distance requirements of the conductive rod terminal, the outlet bushing needs to be tilted to both sides and both ends at a certain angle to meet the break distance requirements of the terminal. Therefore, it is necessary to determine the specific angular position relationship of the contact seat during assembly.

[0003] Conventional circuit breaker products consist of three phases, ABC, such as Figure 8-10 As shown, in order to ensure the fracture distance requirement, the bushing 12 of phase A and the bushing 12 of phase B, the bushing 12 of phase C and the bushing 12 of phase B are required to be separated by the same degree in the vertical direction. At the same time, there are two bushings 12 of phase A, phase B and phase C, which are divided into two groups. The two groups of bushings 12 also need to be separated by an angle in the vertical plane. Finally, the bushings 12 of phase A and phase C in the same group also need to be separated by a certain angle in the horizontal plane, and the angle at which the bushing 12 of phase A and the bushing 12 of phase B in the same group are separated is consistent with the angle at which the bushing 12 of phase C and the bushing 12 of phase B are separated, so as to ensure the fracture distance requirement. In order to achieve this requirement, it is necessary to add a curved diameter cylinder 11 between the circuit breaker cylinder 10 and the flange surface of the bushing 12. For the B-phase product, it is only necessary to meet the requirements that the two B-phase bushings 12 are separated by a certain angle in the vertical plane. For the A and C-phase products, it is necessary to meet the requirements of the two inclination angles of the bushing 12 in the horizontal plane and the vertical plane.

[0004] Since the circuit breaker of this product uses a special-shaped contact seat 6, there are requirements for both position accuracy and tilt angle during assembly. However, before the sleeve 12 is assembled, the position of the contact seat 6 cannot be determined. Figure 10-11 As shown, in order to meet the requirements of the fracture distance of the terminal and determine the position of the contact seat 6, the contact seat 6 is usually positioned using the curved diameter cylinder 11. Because the inclination angle of the contact seat 6 is uncertain, it is necessary to manually measure the distance from the inner wall of the curved diameter cylinder 11 to the outer diameter of the contact seat 6 to make all distances equal, that is, the contact seat 6 and the curved diameter cylinder 11 are coaxially arranged at any position. A continuous marking line is drawn on the contact seat 6 and the electrical connecting rod 14 at the connection between the contact seat 6 and the electrical connecting rod 14, and then the curved diameter cylinder 11 is removed. Because the side of the curved diameter cylinder 11 is closed, but as shown in FIG. Figure 5 , 6, The contact seat and the electrical connecting rod fastening notch 15 shown in 10 are at the position where the contact seat 6 and the electrical connecting rod 13 are in contact. The fastening work of the contact seat 6 cannot be completed without removing the curved diameter cylinder 11. The fastening work of the contact seat 6 and the electrical connecting rod 14 passing through the transformer 9 is completed according to the marked line, and then the curved diameter cylinder 11 is assembled, and finally the sleeve 12 is assembled. The conductive rod 13 at the end of the sleeve 12 extends into the contact finger groove of the contact seat 6 to complete the assembly of the entire product.

[0005] Although this assembly method can meet the break distance requirements of the terminal and determine the position of the contact seat, this assembly method requires repeated disassembly and assembly of the curved diameter cylinder 11, which can easily damage the sealing of the product. In addition, multiple assemblies cause wear to the curved diameter cylinder 11 and adjacent assembly surfaces, and the assembly efficiency is low. Summary of the invention

[0006] The purpose of the present invention is to provide a contact seat assembly tool to solve the problems in the prior art that the curved diameter cylinder needs to be repeatedly disassembled and assembled, which easily damages the sealing of the product, and multiple assemblies cause wear to the curved diameter cylinder and adjacent assembly surfaces, resulting in low assembly efficiency.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0008] A contact seat assembly tool comprises a positioning frame, the positioning frame comprises a base plate for fixedly connecting to a flange at an upper end of a transformer, a frame body is arranged on the base plate, the frame body has an open structure for an assembler to fasten and install the contact seat on an electrical connecting rod, a positioning seat is arranged on the top of the frame body, a positioning through hole is arranged on the positioning seat, the contact seat assembly tool also comprises a positioning rod slidably inserted into the positioning through hole, the position of the positioning through hole and the orientation of the axis line meet the requirements that when the contact seat is fixedly connected to the electrical connecting rod in an accurate posture, the positioning rod can be matched and plugged with the contact seat.

[0009] Furthermore, the bottom plate is an arc-shaped bottom plate, on which a plurality of through holes are provided for fixed connection with the flange at the upper end of the mutual inductor.

[0010] Furthermore, the angle of the arc bottom plate is less than 180°.

[0011] Furthermore, the frame is a long strip bracket arranged on the bottom plate and extending from a side facing away from the transformer assembly, the positioning seat is arranged on the top of the long strip bracket, and the side open space of the long strip bracket constitutes an open structure.

[0012] Furthermore, there are two long strip brackets, which are respectively arranged at the two ends of the bottom plate.

[0013] Furthermore, the positioning seat includes a positioning plate and an anti-wear bushing, the positioning plate is provided with a bushing mounting hole, the anti-wear bushing is mounted in the bushing mounting hole, and the inner hole of the anti-wear bushing constitutes the positioning through hole.

[0014] Furthermore, the anti-wear bushing is a plastic bushing.

[0015] The above technical scheme has the following beneficial effects: the present invention innovatively proposes a contact seat assembly tool, when assembling the contact seat of the circuit breaker, when the contact seat assembly tool of the present invention is installed on the flange at the upper end of the transformer, since the corresponding central angle between two adjacent connecting holes on the flange is relatively large, the installation angle of the present invention can be quickly judged and determined, and then the contact seat is installed, and the positioning rod is inserted into the contact finger groove of the contact seat to ensure that the contact seat is at an accurate installation angle, and finally the contact seat is fastened to the electrical connecting rod extending from the transformer, and the contact seat assembly tool of the present invention is removed, and the curved diameter cylinder and the sleeve can be assembled, so that there is no need to repeatedly install and disassemble the curved diameter cylinder, and repeated disassembly and assembly of the curved diameter cylinder is avoided, which easily damages the sealing of the product, and multiple assemblies cause wear to the curved diameter cylinder and adjacent assembly surfaces, and the assembly efficiency is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of an embodiment of a contact seat assembly tool of the present invention; Figure 2 A side view of an embodiment of a contact seat assembly tool of the present invention; Figure 3 A schematic diagram of a positioning frame of an embodiment of a contact seat assembly tool of the present invention; Figure 4 A top view of a positioning frame of an embodiment of a contact seat assembly tool of the present invention; Figure 5 A cross-sectional view of a contact seat assembly tool of an embodiment of the present invention showing a positioning rod and a contact seat in an inserted state; Figure 6 Schematic diagram of the contact seat assembly tooling of the present invention Figure 1 ; Figure 7 Schematic diagram of the contact seat assembly tooling of the present invention Figure 2 ; Figure 8 It is a schematic diagram of the structure of an existing three-phase circuit breaker; Fig. 9 It is a top view of an existing three-phase circuit breaker; Fig.10 It is a cross-sectional view of an existing circuit breaker without a bushing; Fig.11 Schematic diagram of casing structure.

[0017] In the figure: 1. bottom plate; 2. long strip bracket; 3. positioning plate; 4. anti-wear bushing; 5. positioning rod; 6. contact seat; 7. fastening screw; 8. washer; 9. mutual inductor; 10. cylinder; 11. curved cylinder; 12. bushing; 13. conductive rod; 14. electrical connecting rod; 15. fastening notch between contact seat and electrical connecting rod. DETAILED DESCRIPTION

[0018] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0019] The contact seat assembly tool of the present invention is provided with a positioning frame, the positioning frame includes a base plate for fixedly connected to the flange at the upper end of the transformer, a frame body is provided on the base plate, the frame body has an open structure for assemblers to fasten the contact seat to the electrical connecting rod, a positioning seat is provided on the top of the frame body, a positioning through hole is provided on the positioning seat, and the contact seat assembly tool also includes a positioning rod slidably inserted into the positioning through hole, the position of the positioning through hole and the orientation of the axis are satisfied that when the contact seat is fixedly connected to the electrical connecting rod in an accurate posture, the positioning rod can be matched and plugged with the contact seat. When the contact seat assembly tool of the present invention is installed on the flange at the upper end of the transformer, since the corresponding central angle between the two adjacent connecting holes on the flange is relatively large, the installation angle of the present invention can be quickly judged and determined, and then the contact seat is installed. The positioning rod is used to extend into the contact finger groove of the contact seat to ensure that the contact seat is at an accurate installation angle. Finally, the contact seat is fastened to the electrical connecting rod extending from the transformer, and the contact seat assembly tool of the present invention is removed to assemble the curved diameter cylinder and the sleeve, thereby eliminating the need to repeatedly install and disassemble the curved diameter cylinder, avoiding repeated disassembly and assembly of the curved diameter cylinder, which can easily damage the sealing of the product, and multiple assemblies cause wear on the curved diameter cylinder and adjacent assembly surfaces, thereby significantly improving the efficiency of assembly.

[0020] Based on the above concept, the present invention provides a variety of different embodiments of contact seat assembly tools for illustration.

[0021] In a basic embodiment, Figure 1-3 As shown in 5-6, the contact seat assembly tool includes a positioning frame, the positioning frame includes a base plate 1 for fixedly connecting to the flange at the upper end of the transformer 9, a frame body is arranged on the base plate 1, the frame body has an open structure for the assembler to fasten the contact seat 6 to the electrical connecting rod 13, a positioning seat is arranged on the top of the frame body, a positioning through hole is arranged on the positioning seat, the contact seat assembly tool also includes a positioning rod 5 slidably installed in the positioning through hole, the position of the positioning through hole and the direction of the axis line meet the requirements that when the contact seat 6 is fixedly connected to the electrical connecting rod 14 in an accurate posture, the positioning rod 5 can be matched with the contact seat 6.

[0022] Based on the above embodiment, the bottom plate 1 can be set to be rectangular or circular, and the bottom plate 1 is fixedly connected to the flange at the upper end of the mutual inductor 9. In a preferred embodiment, as Figure 4 , 6 As shown, the bottom plate 1 is arranged in an arc shape and has a plurality of through holes thereon for fixedly connecting with the flange at the upper end of the transformer 9. This facilitates the connection between the bottom plate 1 and the flange at the upper end of the transformer 9. After the contact seat 6 is assembled, the bottom plate 1 can also be conveniently disconnected from the flange at the upper end of the transformer 9, thereby removing the contact seat assembly tooling of the present invention.

[0023] Based on the above embodiment, the angle of the arc-shaped bottom plate 1 can be 180° or 235°. Figure 6 As shown, the angle of the arc-shaped bottom plate 1 is less than 180°, which not only facilitates the installation and removal of the bottom plate 1 on the flange at the upper end of the transformer 9, but also reduces the contact surface between the contact seat assembly tool of the present invention and the flange at the upper end of the transformer 9, thereby avoiding large wear on the contact surface of the flange at the upper end of the transformer 9 when installing and removing the contact seat assembly tool of the present invention.

[0024] On the basis of the above embodiment, the frame can be set in a cylindrical shape, with an open structure for the operator to fasten the contact seat 6 and the electrical connecting rod 14 on the side where the contact seat 6 needs to be fastened, or it can be set in a semi-cylindrical shape with the opening facing such as Figure 5 , 6 , 10 and the contact seat shown in the electrical connecting rod fastening notch 15 on one side. In a preferred embodiment, as Figure 2 As shown, the frame is a long strip bracket 2 arranged on the bottom plate 1 and extending on the side facing away from the transformer 9. The positioning seat is arranged on the top of the long strip bracket 2. The side open space of the long strip bracket 2 constitutes an open structure, which simplifies the contact seat assembly tooling of the present invention and facilitates manufacturing.

[0025] On the basis of the above embodiment, there can be only one strip-shaped bracket 2, and the position of the strip-shaped bracket 2 can be set at the end or the middle of the bottom plate 1, and the side open space of the strip-shaped bracket 2 constitutes an open structure. In a preferred embodiment, as Figure 1 , 3 As shown in FIG. 6 , there are two long strip brackets 2, which are respectively arranged at the two ends of the bottom plate 1, so that the structure of the contact seat assembly tooling of the present invention can be ensured to be more reliable and not easy to deform.

[0026] On the basis of the above embodiment, the positioning seat can be set as a positioning plate 3, and a positioning through hole is opened on the positioning plate. Figure 1-2As shown, the positioning seat includes a positioning plate 3 and an anti-wear bushing 4. The positioning plate 3 is provided with a bushing mounting hole, and the anti-wear bushing 4 is installed in the bushing mounting hole. The inner hole of the anti-wear bushing 4 constitutes the above-mentioned positioning through hole, so as to ensure the accuracy of the positioning rod 5 in positioning the contact seat 6.

[0027] On the basis of the above embodiment, the anti-wear bushing 4 can be made of metal. In a preferred embodiment, the anti-wear bushing 4 is made of plastic, so that the anti-wear bushing 4 can have a certain rigidity and protect the surface of the part from being scratched.

[0028] The assembly of the circuit breaker mainly consists of the single-phase short-circuit breaker assembly, the mutual inductor assembly, the curved cylinder assembly, the contact seat assembly and the bushing assembly. Figure 5-7 As shown, the single-phase circuit breaker and the mutual inductor 9 are first assembled on the circuit breaker cylinder 10, and then the contact seat assembly tool of the present invention is used to assemble the contact seat 6. The contact seat assembly tool of the present invention is installed on the flange at the upper end of the mutual inductor 9. The connection holes on the flange are spaced at a large angle, so it is convenient for the operator to control the installation angle of the contact seat assembly tool and the flange at the upper end of the mutual inductor 9 during installation. At the same time, the position of the positioning through hole on the positioning seat of the contact seat assembly tool of the present invention and the direction of the axis meet the requirements that when the contact seat 6 is fixedly connected to the electrical connecting rod 14 in an accurate posture, the positioning rod 5 can be matched with the contact seat 6.

[0029] When in use, the contact seat assembly tool of the present invention is fixedly installed with the flange at the upper end of the transformer 9, and the installation angle of the contact seat assembly tool in the surface in contact with the flange at the upper end of the transformer 9 is controlled to meet the angle requirement of the contact seat 6 in the horizontal plane. The contact seat 6 is installed on the transformer 9, and the fastening screw 7 at the lower end of the contact seat 6 is aligned with the electrical connecting rod 14 extending out of the transformer 9 for pre-installation, and the positioning rod 5 is extended into the contact finger groove of the contact seat 6, and then the fastening screw 7 at the lower end of the contact seat 6 is fastened with the electrical connecting rod 14 extending out of the transformer 9. The lower end of the fastening screw 7 is also provided with a washer 8. Finally, the contact seat assembly tool of the present invention is removed, and the curved diameter cylinder 11 and the sleeve 12 can be assembled. When assembling the sleeve 12, the conductive rod at the lower end of the sleeve 12 is extended into the contact finger groove on the contact seat assembly 6, and then the sleeve 12 is fastened.

[0030] In this way, the assembly of the circuit breaker can be completed, which not only avoids the damage to the product sealing caused by repeated disassembly and assembly of the curved diameter cylinder 11, but also greatly improves the assembly efficiency.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A contact seat assembly tool, characterized in that: It includes a positioning frame, which includes a base plate for fixed connection with the flange at the upper end of the transformer, a frame body is arranged on the base plate, the frame body has an open structure for assemblers to fasten the contact seat to the electrical connecting rod, a positioning seat is arranged on the top of the frame body, a positioning through hole is arranged on the positioning seat, and the contact seat assembly tool also includes a positioning rod slidably inserted into the positioning through hole, the position of the positioning through hole and the orientation of the axis are satisfied that when the contact seat is fixedly connected to the electrical connecting rod in an accurate posture, the positioning rod can be matched and plugged with the contact seat.

2. The contact seat assembly tool according to claim 1, characterized in that: The bottom plate is an arc-shaped bottom plate, on which a plurality of through holes are provided, and is used for fixed connection with the flange at the upper end of the mutual inductor.

3. The contact seat assembly tool according to claim 2, characterized in that: The angle of the curved bottom plate is less than 180°.

4. The contact seat assembly tool according to claim 2, characterized in that: The frame is a long strip bracket arranged on the bottom plate and extending from a side facing away from the transformer assembly. The positioning seat is arranged on the top of the long strip bracket, and the side open space of the long strip bracket forms an open structure.

5. The contact seat assembly tool according to claim 4, characterized in that: There are two long strip brackets, which are respectively arranged at two ends of the bottom plate.

6. The contact seat assembly tool according to any one of claims 1 to 5, characterized in that: The positioning seat comprises a positioning plate and an anti-wear bushing. The positioning plate is provided with a bushing mounting hole. The anti-wear bushing is mounted in the bushing mounting hole. The inner hole of the anti-wear bushing constitutes the positioning through hole.

7. The contact seat assembly tool according to claim 6, characterized in that: The anti-wear bushing is a plastic bushing.

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