CN210805608U

CN210805608U - Cam structure for vacuum circuit breaker

Info

Publication number: CN210805608U
Application number: CN201921264586.7U
Authority: CN
Inventors: 吴夕球; 涂海龙; 殷长风; 盛琴琴
Original assignee: Anhui Senyuan Electrical Co ltd
Current assignee: Anhui Senyuan Electrical Co ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-06-19
Anticipated expiration: 2029-08-06

Abstract

The utility model provides a be applied to vacuum circuit breaker technical field's cam structure for vacuum circuit breaker, including cam (1), round pin axle (2) passes cam (1), and cam (1) side sets up location screw (3), sets up location shrinkage pool (4) on round pin axle (2), and the dress is twisted in location screw (3) in end screw (5), and in screw front end (6) of end screw (5) extended to location shrinkage pool (3) on round pin axle (2), vacuum circuit breaker cam structure, simple structure realizes reliable location and is connected between cam and the round pin axle, ensures that the welding back is firm, reliable, ensures that assembly tolerance size meets the requirements to connect convenient and fast, can not have the protrusion position, solved the interference problem when other part assembles.

Description

Cam structure for vacuum circuit breaker

Technical Field

The utility model belongs to the technical field of vacuum circuit breaker, more specifically say, relate to a cam structure for vacuum circuit breaker.

Background

At present, in the transmission link of a high-voltage circuit breaker, a cam is basically used for transmission, and the influence of the particularity of the cam structure on the technical parameters of the circuit breaker is very large, so that whether the circuit breaker can be reliably switched on or switched off is determined. Therefore, each link must be strictly controlled when the cam is machined, so that the product can meet the national standard, and the safety and reliability during grid-connected operation are realized. And the vacuum circuit breaker cam among the prior art, cam and round pin hub connection reliability are poor, can't effectively satisfy the requirement, and there is the risk that influences the vacuum circuit breaker reliability in the cam during operation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: aiming at the defects of the prior art, the cam structure for the vacuum circuit breaker is simple in structure, realizes reliable positioning and connection between the cam and the pin shaft, ensures that the cam and the pin shaft are firm and reliable after welding, ensures that the assembly tolerance size meets the requirement, is convenient and quick to connect, does not have a protruding part, and solves the interference problem during assembly of other parts.

To solve the technical problem, the utility model discloses the technical scheme who takes does:

the utility model relates to a cam structure for vacuum circuit breaker, including the cam, the round pin axle passes the cam, and the cam side sets up the location screw, sells epaxial setting location shrinkage pool, and the dress is twisted in the location screw to the end screw, and the screw front end of end screw extends to in the epaxial location shrinkage pool of round pin.

The cam is provided with a through hole penetrating through the cam, the pin shaft penetrates through the through hole, and a welding point is arranged at the joint of the edge of the through hole and the pin shaft.

The welding point comprises a welding point I, a welding point II and a welding point III.

The cam include cam side I, the through-hole includes through-hole border I, the joint setting of cam side I and through-hole border I sets up along the inclined plane portion I that I a week of through-hole border set up, welding point I sets up along I a week of inclined plane portion.

The cam include cam side II, the through-hole includes through-hole border II, cam side II sets up along the inclined plane portion II that II a week in through-hole border set up with II joint portions in through-hole border, welding point II sets up along II a week in inclined plane portion.

And the welding point III is arranged in the positioning screw hole.

The front end of the screw of the head-stop screw is set to be a convex conical structure, and the positioning concave hole on the pin shaft is set to be a concave conical structure.

The locating concave hole arranged on the side surface of the cam is processed in a turning and milling mode.

Adopt the technical scheme of the utility model, can obtain following beneficial effect:

vacuum circuit breaker cam structure, when carrying out vacuum circuit breaker cam structure setting, will sell the axle and pass the cam, and sell epaxial setting location shrinkage pool, the cam side sets up the location screw, the location screw can extend to round pin axle position, twist the dress in the location screw back when the setback screw, the screw front end extends to and sells epaxial location shrinkage pool in, realizes realizing the spacing of round pin axle, realizes fixed connection between round pin axle and the cam, improves the connection reliability. With the structure, the head-stop screw can not protrude outwards, the assembly of other parts can not be influenced, and the interference problem of part assembly can not occur. Vacuum circuit breaker cam structure, simple structure realizes reliable location and is connected between cam and the round pin axle, ensures that the welding back is firm, reliable, ensures that the assembly tolerance size meets the requirements to connect convenient and fast, can not have the bulge, solved the interference problem when other parts assemble.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

fig. 1 is a schematic front view of a cam structure for a vacuum circuit breaker according to the present invention;

fig. 2 is a schematic side view of the cam structure for a vacuum circuit breaker according to the present invention;

fig. 3 is a schematic front sectional view of the cam structure for a vacuum circuit breaker according to the present invention;

fig. 4 is a schematic side sectional view of the cam structure for a vacuum circuit breaker according to the present invention;

fig. 5 is a schematic partial sectional structural view of a cam structure for a vacuum circuit breaker according to the present invention;

in the drawings, the reference numbers are respectively: 1. a cam; 2. a pin shaft; 3. positioning the screw hole; 4. positioning concave holes; 5. a head-stop screw; 6. a screw front end; 7. a through hole; 8. a welding point; 9. a cam side surface I; 10. a welding point III; 11. an inclined plane part I; 12. a cam side II; 14. an inclined plane part II; 15. a welding point I; 16. and a welding point II.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein the embodiments of the present invention are described in detail with reference to the accompanying drawings, for example, the shapes, structures, mutual positions and connection relations of the components, the functions and operation principles of the components, and the like:

as shown in fig. 1-5, the utility model relates to a cam structure for vacuum circuit breaker, including cam 1, round pin axle 2 passes cam 1, and cam 1 side sets up location screw 3, sets up location shrinkage pool 4 on the round pin axle 2, and the dress is twisted in location screw 3 to the setscrew 5, and the screw front end 6 of setscrew 5 extends to in the epaxial location shrinkage pool 4 of round pin. Above-mentioned structure, when carrying out vacuum circuit breaker cam structure setting, will sell the axle and pass the cam, and sell epaxial setting shrinkage pool, the cam side sets up the location screw, and the location screw can extend to round pin axle position, and after the dress was twisted in location screw 3 to the end screw 5, screw front end 6 extended to sell epaxial location shrinkage pool 4 in, realize the spacing of axle, realized fixed connection between axle and the cam, improvement connection reliability. With the structure, the head-stop screw 5 does not protrude outwards, the assembly of other parts is not influenced, and the interference problem of the assembly of the parts is avoided. Vacuum circuit breaker cam structure, simple structure realizes reliable location and is connected between cam and the round pin axle, ensures that the welding back is firm, reliable, ensures that the assembly tolerance size meets the requirements to connect convenient and fast, can not have the bulge, solved the interference problem when other parts assemble.

The cam 1 on set up the through-hole 7 that pierces through cam 1, round pin axle 2 passes through-hole 7, the through-hole border and the round pin axle 2 joint portion of through-hole 7 set up welding point 8. Above-mentioned structure, round pin axle pass the through-hole, then realize the location in extending to the location shrinkage pool 4 on the round pin axle 2 through screw front end 6, and the welding point setting further realizes joint strength in the side, satisfies cam work demand.

And the welding point 8 comprises a welding point I15, a welding point II 16 and a welding point III 10. Cam 1 include cam side I9, through-hole 7 includes through-hole border I, the joint setting of cam side I9 and through-hole border I sets up along I a week inclined plane portion I11 of I a week in through-hole border, welding point I15 sets up along I11 a week in inclined plane portion. And the welding point III 10 is arranged in the positioning screw hole 3. Cam 1 include cam side II 12, through-hole 7 includes through-hole border II, cam side II 12 sets up along II a week inclined plane portion II 14 that set up in through-hole border with II joint portions in through-hole border, welding point II 16 sets up along II a week inclined plane portions. Above-mentioned structure, three welding point setting is in different positions for strengthen joint strength. After the head-stop screw is screwed in place, the head-stop screw is welded in the positioning screw hole 3 to form a welding point III 10, so that the head-stop screw is positioned, the problem of looseness cannot occur when the cam is in a rotating process and is in a frequent rotating and stopping state, and the reliable limit of the pin shaft is ensured. And welding point I15 sets up the joint position at cam one side and round pin axle, and welding point II 16 sets up the joint position at cam opposite side and round pin axle to set up respectively on respective inclined plane portion, realize the further welding between round pin axle and the cam, improve joint strength, and the welding point is located the through-hole inside, can not bulge outside, can not influence other spare part assemblies.

The screw front end 6 of the head-stop screw 5 is set to be a convex conical structure, and the positioning concave hole 4 on the pin shaft 2 is set to be a concave conical structure. According to the structure, the front end of the head-stop screw 5 and the positioning concave hole 4 are reliably clamped, so that the pin shaft is reliably and firmly positioned.

And the positioning concave hole 4 arranged on the side surface of the cam 1 is processed in a turning and milling mode.

The present invention has been described in detail with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and the present invention can be implemented in various ways without modification, and the present invention is not limited by the above embodiments.

Claims

1. A cam structure for a vacuum circuit breaker is characterized in that: the novel positioning device comprises a cam (1), wherein a pin shaft (2) penetrates through the cam (1), a positioning screw hole (3) is formed in the side face of the cam (1), a positioning concave hole (4) is formed in the pin shaft (2), a head-stopping screw (5) is screwed in the positioning screw hole (3), and the front end (6) of the head-stopping screw (5) extends into the positioning concave hole (4) in the pin shaft (2).

2. The cam structure for a vacuum circuit breaker according to claim 1, wherein: the cam (1) on set up through-hole (7) that pierce through cam (1), round pin axle (2) pass through-hole (7), the through-hole border and round pin axle (2) joint portion of through-hole (7) set up welding point (8).

3. The cam structure for a vacuum circuit breaker according to claim 2, wherein: and the welding point (8) comprises a welding point I (15), a welding point II (16) and a welding point III (10).

4. The cam structure for a vacuum circuit breaker according to claim 3, wherein: cam (1) including cam side I (9), through-hole (7) include through-hole border I, the joint portion setting of cam side I (9) and through-hole border I sets up along I a week inclined plane portion I (11) of through-hole border, welding point I (15) set up along I (11) a week inclined plane portion.

5. The cam structure for a vacuum circuit breaker according to claim 3, wherein: and the welding point III (10) is arranged in the positioning screw hole (3).

6. The cam structure for a vacuum circuit breaker according to claim 3 or 4, wherein: cam (1) including cam side II (12), through-hole (7) including through-hole border II, cam side II (12) and through-hole border II joint portion set up along II a week inclined plane portion II (14) of through-hole border, welding point II (16) set up along II (14) a week inclined plane portions.

7. The cam structure for a vacuum circuit breaker according to claim 1 or 2, wherein: the screw front end (6) of the end screw (5) is set to be a convex conical structure, and the positioning concave hole (4) on the pin shaft (2) is set to be a concave conical structure.

8. The cam structure for a vacuum circuit breaker according to claim 1 or 2, wherein: the positioning concave hole (4) arranged on the side surface of the cam (1) is machined in a turning and milling mode.