Tool for major loop of handcart type circuit breaker

Abstract

The utility model relates to a tool for a major loop of a handcart type circuit breaker, which is provided with two adjusting plates, a plurality of through holes distributed at intervals are arranged on the adjusting plates, and the two adjusting plates are distributed on the same plane side by side, are parallel to each other and are fixedly connected into a whole through a connecting piece. The number and the distribution mode of the through holes in the two adjusting plates are the same, the two adjusting plates are used for being arranged on the wire outlet seats of the circuit breaker main loop in a sleeving mode so as to judge whether the positions of the wire outlet seats meet requirements or not, and the number, the distribution mode and the relative position relation of the through holes can be determined according to the number, the distribution mode and the relative position relation of the wire outlet seats. And during assembly, the distribution mode and the relative position of each wire outlet seat are consistent with those of each through hole. The tool is simple in structure and convenient to operate, the installation quality is improved, the consistency and reliability of the installation quality are guaranteed, meanwhile, the working efficiency is improved, and the assembling time is saved.

Description

Technical Field

[0001] The utility model relates to a tooling for the main circuit of a handcart circuit breaker, which can be mainly used for the assembly and positioning of solid-sealed poles in a handcart circuit breaker, belonging to the field of switch technology. Background Art

[0002] The plum blossom contacts in the main circuit of a handcart circuit breaker are arranged on their respective corresponding solid-sealed poles. The number of solid-sealed poles is three, which are vertically installed on the frame of the mechanism box body of the handcart circuit breaker. The fastening bolts of the solid-sealed poles pass through the frame from the bottom of the frame upward and are threadedly connected to the bottom of the solid-sealed poles to fasten the solid-sealed poles on the frame. Two horizontally extended cylindrical outgoing line seats are arranged on each solid-sealed pole, and the respective plum blossom contacts of the main circuit of the circuit breaker are arranged at the outer ends of their respective corresponding outgoing line seats. When in use, the plum blossom contacts of the main circuit of the circuit breaker are aligned with the static contacts of the switch cabinet, and the spiral springs on the plum blossom contacts press their contact pieces against the static contacts, thereby connecting the incoming line and the outgoing line of the switch cabinet through the circuit breaker, and further distributing the upstream electric energy to the corresponding power-consuming equipment terminals. In practice, the installation quality requirements for the solid-sealed poles are relatively high. If the solid-sealed poles are offset during the installation process, it is easy to cause unevenness in the circumferential direction of the pressing force of the plum blossom contacts, resulting in temperature rise, and even burning out the components in severe cases.

[0003] At present, the installation quality of the solid-sealed poles mainly depends on the control of operators. It depends on the working skills and experience of the operators and determines / adjusts the installation position of the solid-sealed poles with the aid of measuring tools. This method is greatly affected by personal factors of the operators, which is not conducive to improving the installation quality and ensuring the consistency and reliability of the installation quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a tooling for the main circuit of a handcart circuit breaker, which is conducive to improving the installation quality and ensuring the consistency and reliability of the installation quality.

[0005] The technical solution of the utility model is as follows: The tooling for the main circuit of a handcart circuit breaker is provided with adjusting plates. A plurality of through holes are arranged on the adjusting plates in an interphase distribution. The number of the adjusting plates is two, and the two adjusting plates are arranged side by side in the same plane and are parallel to each other, and are fixedly connected into a whole through connecting pieces. The number and distribution mode of the through holes on the two adjusting plates are the same, and are used for sleeving on the respective outgoing line seats of the main circuit of the circuit breaker to judge whether the positions between the respective outgoing line seats meet the requirements. The number, distribution mode and relative position relationship of the through holes can be determined according to the number, distribution mode and relative position relationship of the outgoing line seats. During assembly, the distribution mode and relative position of the respective outgoing line seats should be consistent with those of the respective through holes.

[0006] Generally, the adjusting plate is rectangular.

[0007] Generally, the number of through holes on the adjusting plates can be three, and the planar distribution mode and relative positions among the six through holes on the two adjusting plates are consistent with the planar distribution mode and relative positions of the six outgoing line seats (main circuit outgoing line seats) on the trolley-type circuit breaker.

[0008] Preferably, there is a gap between the two adjusting plates.

[0009] Further, the aperture of the through hole on the adjusting plate is adapted to the outer diameter of the outgoing line seat on the trolley-type circuit breaker and can be sleeved on the outgoing line seat. After being sleeved together, there is a gap between the through hole and the sleeved outgoing line seat that allows relative axial movement between the two and does not allow relative shaking between the two (or rather, does not allow the relative position error between the outgoing line seats sleeved on their respective corresponding through holes to exceed the set range).

[0010] Preferably, the edge part (the edge part of the through hole port) of the through hole on the adjusting plate is chamfered / rounded (in the shape after chamfering / rounding).

[0011] Preferably, the connecting member is a curved rod, the number of the curved rods is one or more, and the two ends of the curved rod are respectively fixedly connected to their corresponding adjusting plates.

[0012] Preferably, the curved rod is in a U shape.

[0013] Preferably, the number of the curved rods is two, which are respectively arranged at the two sides (the two sides of the midline in the extending direction) of the adjusting plate.

[0014] Preferably, the adjusting plate is provided with a mortise groove for connecting the curved rod. The mortise groove is a non-circular groove (a groove with a cross-section that is not circular at least in part), and an axial (in the depth direction of the mortise groove) bottom through hole for passing a countersunk screw is provided at the bottom of the groove. The end part of the curved rod is in the shape of a tenon head adapted to the mortise groove, and is inserted into its corresponding mortise groove. The countersunk screw passes through the bottom through hole from the other end (the end far from the end part of the curved rod) of the bottom through hole, and the head of the countersunk screw is located in the enlarged diameter area at the other end of the bottom through hole, and the tail is threadedly connected to the end part of the curved rod to fasten the end part of the curved rod to the adjusting plate. A threaded hole for threaded connection with the countersunk screw is provided at the end part of the curved rod.

[0015] The mortise groove can be a flat groove (a groove with a flat circular or flat square cross-section), or a round-square groove. The so-called round-square groove is a shape in which at least part of the cross-section is in the form of a circular and rectangular concentric overlap (the centers are at the same point and neither of the two figures (circle or rectangle) is entirely within the other figure), or any other suitable non-circular groove.

[0016] For example, the main body part of the mortise groove can be in the shape of a circular groove, and two opposite (located in the same diameter direction) rectangular grooves / notches are provided on the side wall of the circular groove (these two notches can be regarded as the parts of a rectangle that overlaps concentrically with the circle protruding from the circle). Correspondingly, the end part (tenon head) of the curved rod is in a shape that matches the flat groove or the round-square groove.

[0017] Preferably, the adjusting plate is made of SMC resin material.

[0018] Preferably, the curved rod is made of cold-drawn round steel.

[0019] Preferably, the countersunk head screw is made of metal.

[0020] Preferably, an adhesive (for example, thread sealant) is provided between the tail of the countersunk head screw connected by threads and the screw hole at the end of the curved rod.

[0021] The beneficial effects of the present utility model are as follows: Since round holes corresponding to each outgoing line seat are provided on the tooling, the relative positions of each solid-sealed pole column / outgoing line seat can be determined whether they meet the requirements by the round holes on the tooling. When in use, each round hole on the tooling is simultaneously sleeved on its corresponding outgoing line seat. Since the relative positions of each round hole on the tooling are precise and fixed, and the matching dimensions with the outgoing line seat are appropriate, the outgoing line seat can be easily inserted without shaking. Therefore, as long as each outgoing line seat can be smoothly / easily inserted into its corresponding round hole, it means that the relative positions of each outgoing line seat are consistent with the relative positions of each round hole, meeting the quality requirements of the installation position. If there is a position deviation in the solid-sealed pole column, the relative positions of each outgoing line seat are inconsistent with the relative positions of each round hole, and then the position of the solid-sealed pole column needs to be adjusted, and corresponding adjustments are made according to the centering degree / clamping degree between the round hole and the outgoing line seat inserted into the round hole. The adjustment is more convenient and fast, and it can be judged at any time whether it has been adjusted to the appropriate position.

[0022] The structure of the present utility model is simple and the operation is convenient. It can enable the operator to more simply and accurately judge the accuracy of the assembly position of the solid-sealed pole column, and more conveniently adjust the assembly position of the solid-sealed pole column, which helps to improve the installation quality, ensure the consistency and reliability of the installation quality, and at the same time is beneficial to improving the work efficiency and saving the assembly time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the structural diagram (front side view) of the present utility model;

[0024] Figure 2 is the structural diagram (rear side view) of the present utility model;

[0025] Figure 3 is the schematic diagram of the matching structure between the end part of the curved rod and the mortise groove of the adjusting plate involved in the present utility model;

[0026] Figure 4 It is a schematic diagram of the use of the utility model;

[0027] Figure 5 The utility model is a schematic diagram of the circuit breaker assembly process. DETAILED DESCRIPTION

[0028] See also Figures 1 - 5 This tooling includes an adjustment plate 11, two adjustment plates are connected together by a bent rod 12, and the fixing screws are cross-slot countersunk screws (or countersunk screws) 16. The adjustment plate is used for assembly and adjustment of the sealed pole 25 in the main circuit to ensure the synchronous size of the sealed pole, thereby largely ensuring the reliability of the engagement of the plum blossom contact.

[0029] The adjustment plate is made of SMC resin material, which has a smooth and wear-resistant surface. The corners are rounded during processing to avoid scratching the surface of the sealed pole and the assembly personnel. It plays a certain protective role for both equipment and personnel. SMC resin material has high mechanical strength, is not easy to deform, has low density, and the parts are light and easy to pick up after processing.

[0030] The size of the adjustment plate can be 530mm×90mm×8mm. Three φ75 round holes (through holes) 13 are processed on the adjustment plate, with a spacing of 210mm. The φ75 round holes match the outlet terminals (outlet sockets) 26 of the sealed poles, with a spacing of 210mm, corresponding to the three-phase sealed poles 2.

[0031] The curved rod can be made of cold-drawn round steel and can be processed from φ10 round steel to reduce processing costs. After processing and forming, surface treatment is performed to prevent rust in the later stage.

[0032] A round square groove (tenon) 14 is opened on both sides of the center of the same surface of the adjustment plate, and a round square flat (tenon) 15 is opened at the ends (two connecting ends) of the bent rod. During assembly, the round square flat on the bent rod is directly inserted into the round square groove on the adjustment plate to ensure a unique assembly direction. After the round square flat is inserted into the round square groove, it is fastened with a cross-slot countersunk screw. The threads of the countersunk screw are coated with 263 thread sealant to fasten. Coating 263 thread sealant can avoid the deviation of the positioning size during long-term use.

[0033] During use, place the solid-sealed pole column on the frame (the installation base of the solid-sealed pole column) 22 of the circuit breaker mechanism box body 21, and pre-tighten the installation screws 23 at the bottom (base structure) 24 of the solid-sealed pole column 2. The purpose of pre-tightening is to prevent the solid-sealed pole column from falling off the mechanism box body, avoid damaging the solid-sealed pole column, and prevent injury to the assembly personnel. Subsequently, slip the adjustment plate onto the outer circumference of the outgoing line socket 26 of the solid-sealed pole column. If the adjustment plate can be easily slipped on, it indicates that the assembly dimensions of the solid-sealed pole column are appropriate. If it is difficult to slip on the adjustment plate, the installation position of the solid-sealed pole column needs to be adjusted appropriately. After adjustment, tighten the installation screws at the bottom of the solid-sealed pole column to fix the solid-sealed pole column in place.

[0034] The static contact matching the circuit breaker is fixed on the switch cabinet body. One side of the static contact is connected to the incoming line of the switch cabinet, and the other side is connected to the outgoing line of the switch cabinet. After the circuit breaker is pushed to the working position, the spiral spring on the plum blossom contact 28 of the circuit breaker is tensioned, so that the contact pieces on the plum blossom contact are tensioned on the static contact. After the circuit breaker is closed, the upstream electric energy is distributed to the downstream electrical equipment end through the main circuit of the circuit breaker.

[0035] This kind of tooling structure for the main circuit of the handcart-type circuit breaker is simple, without too complex a process during processing, and is relatively easy to manufacture. It is convenient to operate. When assembling, place the adjustment plate at the outgoing line socket of the solid-sealed pole column. If it can be easily placed, it ensures the installation dimensions of the solid-sealed pole column. The production cost is relatively low. Using the tooling for positioning does not increase too much assembly time, thus ensuring the assembly dimensions while ensuring the production efficiency.

[0036] For the various preferred and optional technical means disclosed in the present utility model, except as otherwise specifically stated and when one preferred or optional technical means is a further limitation of another technical means, they can be arbitrarily combined to form several different specific implementation manners.

Claims

1. Tooling for the main circuit of a trolley-type circuit breaker, characterized by An adjustment plate is provided, on which a plurality of through holes are arranged alternately. The number of the adjustment plates is two, and the two adjustment plates are arranged side by side on the same plane and parallel to each other, and are fixedly connected as a whole by a connecting piece.

2. The tooling for the main circuit of a trolley type circuit breaker according to claim 1, characterized in that The number of through holes on the adjustment plate is 3, and the plane distribution mode and relative positions of the 6 through holes on the two adjustment plates are consistent with the plane distribution mode and relative positions of the 6 outlet sockets on the trolley type circuit breaker.

3. The tooling for the main circuit of a trolley type circuit breaker according to claim 1, characterized in that The aperture of the through hole on the adjustment plate is adapted to the outer diameter of the outlet seat on the trolley type circuit breaker.

4. The tooling for the main circuit of a trolley type circuit breaker according to claim 1, characterized in that The corners of the through holes on the adjustment plate are chamfered.

5. The tooling for the main circuit of a trolley type circuit breaker according to claim 1, characterized in that The connecting member is a curved rod, the number of the curved rod is one or more, and the two ends of the curved rod are respectively fixedly connected to the corresponding adjustment plates.

6. The tooling for the main circuit of a trolley type circuit breaker according to claim 5, characterized in that The curved rod is U-shaped.

7. The tooling for the main circuit of a trolley type circuit breaker according to claim 6, characterized in that There are two bent rods, which are respectively arranged on two sides of the adjustment plate.

8. The tooling for the main circuit of a trolley type circuit breaker according to claim 6, characterized in that The adjustment plate is provided with a mortise and tenon for connecting the bent rod, the mortise and tenon is a non-circular groove, and the bottom of the groove is provided with an axial bottom through hole for passing a countersunk screw. The end of the bent rod is in a tenon shape that conforms to the mortise and tenon, and is inserted into the corresponding mortise and tenon. The countersunk screw passes through the bottom through hole from the other end of the bottom through hole, and its tail is threadedly connected to the end of the bent rod, thereby fastening the end of the bent rod to the adjustment plate. The end of the bent rod is provided with a screw hole that is threadedly connected to the countersunk screw.

9. The tooling for the main circuit of a trolley type circuit breaker according to claim 8, characterized in that The tenon groove is a flat groove, or the tenon groove is a round square groove.

10. The tooling for the main circuit of a trolley type circuit breaker according to claim 8, characterized in that The main body of the mortise and tenon groove is in the shape of a circular groove, and two opposite rectangular grooves are arranged on the side wall of the circular groove.

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