CN209947734U - Contact system of three-station isolating switch - Google Patents
Contact system of three-station isolating switch Download PDFInfo
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- CN209947734U CN209947734U CN201921135957.1U CN201921135957U CN209947734U CN 209947734 U CN209947734 U CN 209947734U CN 201921135957 U CN201921135957 U CN 201921135957U CN 209947734 U CN209947734 U CN 209947734U
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Abstract
The utility model discloses a three-station isolator's contact system, including the stationary contact subassembly, the movable contact subassembly, the ground contact subassembly, the moving contact, base plate and mounting panel, the parallel interval of base plate and mounting panel sets up, the movable contact subassembly, the both ends of stationary contact subassembly and ground contact subassembly are fixed on base plate and mounting panel through the insulator respectively, the lower extreme pinhole of moving contact is connected through round pin and moving contact subassembly are articulated to make the moving contact can be around the pin joint and do rotary motion, stationary contact subassembly and ground contact subassembly all are located moving contact rotary motion's orbit, the right side pinhole of moving contact is connected through the one end of round pin and connecting rod is articulated, the other end of connecting rod is connected through the one end of round pin and turning arm is articulated, the other end of turning arm cup joints perpendicularly in fixing on the main shaft between base plate and mounting panel. The moving contact of the contact system has a stable motion track, and the stability of the opening and closing actions of the isolating switch is ensured.
Description
Technical Field
The utility model relates to an isolator equipment field, concretely relates to three station isolator's contact system.
Background
At present, when the rail transit electric wire netting has a power failure and overhauls the operation, for preventing that the electric substation from misdelivering electricity and eliminating induced voltage and the influence of winding flow electric charge on the contact net, need carry out interim ground connection with the contact net in the operation district, guarantee maintainer's safety. The traditional maintenance mode is that maintenance is carried out after the disconnecting switch of the two stations is in open cooperation with the grounding switch, so that the working efficiency is greatly reduced, and the cost is increased. Along with the application of three-station isolating switch, two-station isolating switch and earthing switch are integrated into three-station isolating switch, and it can be directly switched to the earthing position during maintenance, so that the operation safety control level and the working efficiency are greatly improved. Meanwhile, the three-station isolating switch can also be used as a change-over switch to switch between two circuits with different voltage levels, so that the efficiency is greatly improved, and the cost is reduced.
The contact system of the three-station isolating switch comprises a working position, a disconnecting position and a grounding position, a moving contact is generally driven by a linkage mechanism to move among the positions to complete the actions of opening, closing and grounding, and the contact system is an executing mechanism for the actions of opening and closing of the isolating switch.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a three station isolator's contact system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a contact system of a three-station isolating switch comprises a fixed contact component, a movable contact component and a grounding contact component, the moving contact, base plate and mounting panel, base plate and the parallel interval of mounting panel set up, the moving contact subassembly, the one end of static contact subassembly and ground contact subassembly is all fixed on the base plate through first insulator, the other end all fixes on the mounting panel through the second insulator, the lower extreme pinhole of moving contact is connected with moving contact subassembly is articulated through the round pin and is made the moving contact can be around the pin joint and be rotary motion, static contact subassembly and ground contact subassembly all are located moving contact rotary motion's orbit, the right side pinhole of moving contact is connected through the round pin is articulated with the one end of connecting rod, the other end of connecting rod is connected through the round pin is articulated with the one end of connecting lever, the other end of connecting lever cup joints perpendicularly on fixing the main shaft between base plate and mounting panel, and make the connecting lever hold tightly on the main shaft.
Preferably, in the contact system of the three-station isolating switch, the static contact component and the moving contact component are arranged up and down, and the central lines of the static contact component and the moving contact component are superposed; the grounding contact assembly and the moving contact assembly are arranged in a left-right mode, the center lines of the grounding contact assembly and the moving contact assembly are parallel, and the lower ends of the grounding contact assembly and the moving contact assembly are on the same horizontal line.
Preferably, in the contact system of the three-station disconnecting switch, the main shaft and the grounding contact component are respectively positioned at two sides of the moving contact component, and two ends of the main shaft are respectively fixed in bearing seats on inner side surfaces of the base plate and the mounting plate.
Preferably, in the contact system of the three-position isolating switch, the top corner of the grounding contact assembly facing the moving contact assembly is provided with a notch and a chamfer.
Preferably, in the contact system of the three-position disconnecting switch, the fixed contact assembly, the movable contact assembly and the grounding contact assembly are formed by overlapping N conductive rows and base plates separated between two adjacent conductive rows.
Preferably, N ≦ 3 for the contact system of the three-position disconnecting switch.
Compared with the prior art, the beneficial effects of the utility model are that:
1. this three-station isolator's contact system in moving contact and main shaft linkage, when the main shaft rotates, drive the connecting lever swing, through connecting lever pulling connecting rod, final pulling moving contact is rotary motion around its pin joint, it has guaranteed that the moving contact has stable movement track, ground contact subassembly and static contact subassembly all are located the movement track of moving contact, can accomplish the overlap joint with stationary contact subassembly or ground contact subassembly respectively in the moving contact motion, make moving contact subassembly and stationary contact subassembly or ground contact subassembly switch on, accomplish combined floodgate action or ground connection action, when the moving contact moves to the intermediate position of stationary contact subassembly and ground contact subassembly, accomplish the action of separating brake.
2. Each contact subassembly of contact system is stable and the reasonable distribution in position between base plate and mounting panel, guarantees that the moving contact can be abundant combined floodgate in the action in-process and targets in place, plays stable guard action to power supply system, and this scheme of arranging is optimal to the utilization ratio in space, and simultaneously, the incision and the chamfer are handled to the ground contact subassembly, further compresses the distance between moving contact subassembly and the ground contact subassembly, the realization three-station isolator's that can maximize miniaturization.
3. Each contact assembly is formed by superposing a plurality of conductive bars after being isolated by a backing plate, and different rated current parameters can be obtained by adjusting the number of the conductive bars.
4. When the isolating switch is at the switch-off position, the moving contact component, the grounding contact component and the static contact component form a double fracture, and an effective insulation distance can be kept.
Drawings
Fig. 1 is an axial view of the present invention;
fig. 2 is a left side view of the present invention;
fig. 3 is a schematic structural diagram of the middle contact system in a closing state according to the present invention;
fig. 4 is a schematic structural diagram of the middle contact system in the open state of the present invention;
fig. 5 is a schematic structural diagram of the contact system in the ground state according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a contact system of a three-station isolating switch comprises a static contact component 1, a moving contact component 2, a grounding contact component 3, a moving contact 4, a base plate 11 and a mounting plate 7, wherein the base plate 11 and the mounting plate 7 are arranged in parallel at intervals, one end of each of the moving contact component 2, the static contact component 1 and the grounding contact component 3 is fixed on the base plate 11 through a first insulator 5, the other end of each of the moving contact component 2, the moving contact component 4 is hinged and connected with the moving contact component 2 through a pin, the moving contact 4 can rotate around a hinge point, the static contact component 1 and the grounding contact component 3 are both positioned on a track of the rotating motion of the moving contact 4, a pin hole on the right side of the moving contact 4 is hinged and connected with one end of a connecting rod 8 through a pin, the other end of the connecting rod 8 is hinged and connected with one end of a connecting lever 9 through a pin, the other end of the connecting lever 9 is vertically, and the crank arm 9 is tightly held on the main shaft 10 through an adjusting bolt.
As shown in fig. 1, in this structure, the moving contact 4 is linked with the main shaft 10, when the main shaft 10 rotates (the main shaft is driven to rotate by other power mechanisms on the isolating switch, and the power mechanism may be a motor), the connecting rod 8 is pulled by the connecting rod 9, and the moving contact 4 is finally pulled to rotate around the hinge point thereof, so that it is ensured that the moving contact 4 has a stable movement track, the grounding contact assembly 3 and the stationary contact assembly 1 are both located on the movement track of the moving contact 4, and the moving contact 4 can respectively complete the lap joint with the stationary contact assembly 1 or the grounding contact assembly 3 in the movement, so that the moving contact assembly 2 is conducted with the stationary contact assembly 1 or the grounding contact assembly 3, and the closing action or the grounding action is completed, and when the moving contact 4 moves to the middle position of the stationary contact assembly 1 and the grounding contact assembly 3, the opening.
It should be noted that the crank arm 9 must be held tightly on the main shaft 10 by an adjusting bolt to prevent the relative rotation between the crank arm and the main shaft from affecting the accuracy of the opening and closing actions.
In another embodiment, the static contact component 1 and the moving contact component 2 are arranged up and down, and the central lines of the two components are superposed; the grounding contact assembly 3 and the moving contact assembly 2 are arranged left and right, the central lines of the grounding contact assembly and the moving contact assembly are parallel, and the lower ends of the grounding contact assembly and the moving contact assembly are on the same horizontal line. This arrangement structure is used for cooperating the rotary motion of moving contact 4 and can have optimal space utilization, makes isolator have less volume to in this kind of arranging, when isolator was in the separating brake position, moving contact subassembly 2 formed double fracture with ground contact subassembly 3 and static contact subassembly 1, can keep effectual insulation distance.
In another embodiment, the main shaft 10 and the grounding contact assembly 3 are respectively located at two sides of the movable contact assembly 2, and two ends of the main shaft 10 are respectively fixed in bearing seats (or shaft sleeves) on the inner side surfaces of the base plate 11 and the mounting plate 7.
In another embodiment, the ground contact assembly 3 has cutouts and chamfers at the top corners toward the movable contact assembly 2. And the distance between the moving contact assembly 2 and the grounding contact assembly 3 is further compressed by processing the notch and the chamfer angle of the grounding contact assembly, so that the miniaturization of the three-station isolating switch is realized to the greatest extent.
In another embodiment, the fixed contact assembly 1, the movable contact assembly 2 and the grounding contact assembly 3 are formed by stacking N conductive bars and a pad 12 separated between two adjacent conductive bars. By varying the number of conducting bars, a variation of the rated current parameter can be achieved.
In another embodiment, N ≦ 3. The number of the conductive rows superposed on each contact assembly is not more than 3 at most in view of the volume of the isolating switch.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A contact system of a three-station isolating switch comprises a static contact component, a movable contact component, a grounding contact component, a movable contact, a base plate and a mounting plate, and is characterized in that the base plate and the mounting plate are arranged in parallel at intervals, one end of the movable contact component, one end of the static contact component and one end of the grounding contact component are fixed on the base plate through a first insulator, the other end of the movable contact component are fixed on the mounting plate through a second insulator, a lower end pin hole of the movable contact is hinged and connected with the movable contact component through a pin so that the movable contact can rotate around a hinge point, the static contact component and the grounding contact component are both positioned on the track of the rotating motion of the movable contact, a right side pin hole of the movable contact is hinged and connected with one end of a connecting rod through a pin, the other end of the connecting rod is hinged and connected with one end of, and the crank arm is tightly held on the main shaft through an adjusting bolt.
2. The contact system of the three-position isolating switch as claimed in claim 1, wherein the fixed contact assembly and the movable contact assembly are arranged up and down, and the central lines of the fixed contact assembly and the movable contact assembly are coincident; the grounding contact assembly and the moving contact assembly are arranged in a left-right mode, the center lines of the grounding contact assembly and the moving contact assembly are parallel, and the lower ends of the grounding contact assembly and the moving contact assembly are on the same horizontal line.
3. The contact system of a three-position disconnecting switch according to claim 2, wherein the main shaft and the grounding contact assembly are respectively located at both sides of the movable contact assembly, and both ends of the main shaft are respectively fixed in bearing seats on inner side surfaces of the base plate and the mounting plate.
4. The contact system of the three-position disconnecting switch according to claim 3, wherein the ground contact assembly has a cut-out and a chamfer at a top corner facing the movable contact assembly.
5. The contact system of the three-position isolating switch according to claim 4, wherein the fixed contact assembly, the movable contact assembly and the grounding contact assembly are stacked by N conductive rows and a base plate separated between two adjacent conductive rows.
6. The contact system of the three-position disconnecting switch according to claim 5, wherein N ≦ 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921135957.1U CN209947734U (en) | 2019-07-19 | 2019-07-19 | Contact system of three-station isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921135957.1U CN209947734U (en) | 2019-07-19 | 2019-07-19 | Contact system of three-station isolating switch |
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| Publication Number | Publication Date |
|---|---|
| CN209947734U true CN209947734U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921135957.1U Active CN209947734U (en) | 2019-07-19 | 2019-07-19 | Contact system of three-station isolating switch |
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| CN (1) | CN209947734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112242266A (en) * | 2019-07-19 | 2021-01-19 | 武汉倍诺德开关有限公司 | Contact system of three-station isolating switch |
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2019
- 2019-07-19 CN CN201921135957.1U patent/CN209947734U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112242266A (en) * | 2019-07-19 | 2021-01-19 | 武汉倍诺德开关有限公司 | Contact system of three-station isolating switch |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cao Jinlin Inventor after: Huang Wenzhi Inventor after: Wang Chao Inventor after: Tu Yong Inventor after: Jiang Yang Inventor before: Cao Jinlin Inventor before: Huang Wenzhi Inventor before: Wang Chao |
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| CB03 | Change of inventor or designer information |