CN215007960U - Moving contact structure with soft connection of cage-shaped off-circuit tap changer - Google Patents
Moving contact structure with soft connection of cage-shaped off-circuit tap changer Download PDFInfo
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- CN215007960U CN215007960U CN202121654758.9U CN202121654758U CN215007960U CN 215007960 U CN215007960 U CN 215007960U CN 202121654758 U CN202121654758 U CN 202121654758U CN 215007960 U CN215007960 U CN 215007960U
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Abstract
The utility model provides a moving contact structure with soft connection for a cage-shaped off-circuit tap-changer, which comprises an insulating cylinder and an insulating main shaft which is sleeved in the insulating cylinder and can rotate; at least one phase contact assembly is arranged between the insulating cylinder and the insulating main shaft from top to bottom, and each phase contact assembly comprises a static contact, a neutral point contact, an insulating bush, a dynamic contact support, a dynamic contact, a spring, a conductive plate, a first soft connection and a second soft connection; when the moving contact rotates along with the insulating main shaft to be contacted with the middle part of the static contact, the current flowing to the tapping switch is output after sequentially passing through the static contact, the moving contact, the first soft connection, the current conducting plate, the second soft connection and the neutral point contact. The utility model has simple structure, can overcome the influence of the upper and lower displacement of the moving contact on the matching of the moving contact and the static contact caused by assembly or part errors, and ensures the normal switching of the moving contact and the static contact; the requirements of applying the non-excitation tap changer in special occasions with high voltage-resistant level and limited space are met.
Description
Technical Field
The utility model belongs to the technical field of the electromechanical manufacturing, concretely relates to cage-shaped does not have moving contact structure of excitation tapping switch area soft hookup.
Background
The switching moving contact applied to the non-excitation tapping switch at present is of a clamping piece type structure, when a contact of the structure normally works, an upper clamping piece and a lower clamping piece of the moving contact need to be reliably contacted with a static contact, the moving contact is installed on an insulating main shaft, the relative position of the moving contact and the position of the lower clamping piece of the moving contact are fixed, if the position has deviation, the position of the upper clamping piece and the position of the lower clamping piece of the moving contact can be deviated relative to the static contact, namely, the clamping piece contact on one side is tightly contacted with the static contact, the resistance is increased or the moving contact is blocked, and when the clamping piece contact on the other side is matched with the static contact, a suspension state or poor contact occurs, which is not beneficial to the current to pass through the moving contact and the static contact, and when the tapping switch is seriously burnt.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, an object of the utility model is to provide a cage-shaped does not have moving contact structure of excitation tapping switch area soft hookup, moving contact structure has avoided the skew of clip formula contact structure to lead to tapping switch resistance increase, bad contact or the dead risk of card.
The utility model aims at realizing through the following technical scheme:
a cage-shaped non-excitation tapping switch with a soft-connected moving contact structure comprises an insulating cylinder and an insulating main shaft which is sleeved in the insulating cylinder and can rotate; at least one phase contact assembly is arranged between the insulating cylinder and the insulating main shaft from top to bottom, and each phase contact assembly comprises a static contact, a neutral point contact, an insulating bush, a dynamic contact support, a dynamic contact, a spring, a conductive plate, a first soft connection and a second soft connection; the number of the static contacts is multiple and the static contacts are arranged on the insulating cylinder in an annular mode, the contact end of each static contact is located in the insulating cylinder, and the wiring end of each static contact is located outside the insulating cylinder; the neutral point contact is arranged on the insulating cylinder and extends into the insulating cylinder; the insulation bushing is fixedly sleeved on the insulation main shaft and can rotate along with the insulation main shaft; the moving contact support is fixed on the outer wall of the insulating bush corresponding to the fixed contact and is internally provided with a slide way towards one side of the inner wall of the insulating cylinder; the moving contact is arranged in a slideway of the moving contact support and can slide out of or into the slideway to be kept in contact with a contact end of the static contact after rotating along with the insulating main shaft; the spring is arranged in the moving contact support, and the two ends of the spring are respectively provided with the outer wall of the insulating bush and one side of the moving contact facing the insulating bush, so as to push the moving contact to slide out of the moving contact support and press the static contact; the conductive plate is annularly arranged outside the moving contact support; two ends of the first soft connection are respectively connected to the side wall of the current conducting plate and the side wall of the moving contact; two ends of the second soft connection are respectively connected to the neutral point contact and the conductive plate; when the moving contact rotates along with the insulating main shaft to be contacted with the middle part of the static contact, the current flowing to the tapping switch is output after sequentially passing through the static contact, the moving contact, the first soft connection, the current conducting plate, the second soft connection and the neutral point contact.
Further, insulating main shaft is insulating triangle main shaft, compares with cylindrical main shaft, the drive insulating bush that insulating main shaft can be stable rotates with moving contact support and moving contact, avoids taking place relative rotation.
Furthermore, a three-phase contact assembly is arranged between the insulating cylinder and the insulating main shaft from top to bottom and corresponds to a three-phase power supply.
Furthermore, each phase of contact assembly comprises five gears, namely the number of the fixed contacts is five, and the interval angle between the five fixed contacts is 60 degrees.
Furthermore, the first soft coupling and the second soft coupling are made of soft copper foil or copper cables or copper braided wires.
Furthermore, in order to reduce the length of the second soft connection, simplify the structure and save the cost, the middle part of the second soft connection penetrates through the insulating main shaft.
Furthermore, the number of the neutral point contacts is two, and the number of the corresponding second soft joints is also two; each neutral point contact is respectively connected and conducted with the upper side and the lower side of the conductive plate through a second flexible connection.
Furthermore, the moving contact is a plurality of sheet conductors which are overlapped and arranged in the moving contact support slideway; correspondingly, the number of the first soft connection and the number of the springs are also multiple; each moving contact is connected with the current conducting plate through a flexible connection I, and a spring is connected between each moving contact and the bushing. Preferably, the number of the moving contacts is five, and the number of the soft connection one and the number of the springs are also five.
Furthermore, a guide groove is formed in the middle of each moving contact, and a pin rod penetrating through the guide grooves of all the moving contacts is vertically fixed on a moving contact support; all moving contacts slide back and forth in the moving contact support along the pin rod under the guidance of the guide groove; the structure can ensure the accuracy and stability of the sliding direction of the moving contact.
The utility model designs the moving contact into a floating type and an independent component, and the neutral point contact and the moving contact are communicated by soft connection, the contact has simple structure and avoids the risk of increased resistance, bad contact or blocking of the tapping switch caused by the structural deviation of the clip type contact; the influence of the upper and lower offset of the moving contact on the matching of the moving contact and the static contact caused by assembly or part errors can be overcome, and the normal switching of the moving contact and the static contact is ensured; relative structure is heavy, and is many with the material, and is bulky, with high costs current clamping piece contact, the utility model discloses there is great improvement in the structure, has solved some requirements that withstand voltage grade is high, the limited special occasion in space is applied and has not been had the requirement of excitation tapping switch.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a top view of the moving contact structure of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
shown in the figure: 1-neutral point contact, 2-static contact, 3-soft connection II, 4-insulation main shaft, 5-conductive plate, 6-movable contact support, 7-pin rod, 8-movable contact, 9-spring, 10-soft connection I, 11-insulation bush, 12-insulation cylinder and 13-guide groove.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be considered as the scope of the present invention without substantial changes in the technical content.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
as shown in fig. 1-2, the utility model discloses a moving contact structure with soft connection of cage-shaped off-circuit tap-changer, which comprises an insulating cylinder 12, an insulating main shaft 4 and a contact assembly.
The insulating cylinder 12 is a hollow insulating cylinder body and is used as an installation support member for a static contact and a neutral contact.
The insulating main shaft 4 is sleeved in the insulating cylinder 12 and can rotate in the insulating cylinder 12 under the driving of an electric mechanism at the top of the tap switch, and the insulating main shaft 4 is vertically arranged on a central line of the insulating cylinder 12. Insulating main shaft 12 is insulating triangle main shaft, compares with cylindrical main shaft, insulating main shaft 12 can be stable drive insulating bush 11 rotates with moving contact support 6 and moving contact 8, avoids insulating main shaft 12 and insulating bush 11 to take place relative rotation.
The contact assembly has three phases (corresponding to three-phase power lines) and is between the insulating cylinder 12 and the insulating main shaft 4 from top to bottom, corresponding to a three-phase power supply. Each phase of contact assembly comprises a static contact 2, a neutral point contact 1, an insulating bush 11, a movable contact support 6, a movable contact 8, a spring 9, a conductive plate 5, a first soft connection 10 and a second soft connection 3. Each phase contact assembly comprises five gears. The horizontal included angle between any two adjacent movable contact supports 6 of the three-phase contact component is 60 degrees.
The number of the static contacts 2 is five, the static contacts are annularly arranged on the insulating cylinder, the contact end of each static contact 2 is positioned in the insulating cylinder 12, and the terminal of each static contact is positioned outside the insulating cylinder 12. The interval angle of the five static contacts 8 is 60 degrees.
The neutral point contact 1 is arranged on the insulating cylinder 12 and extends into the insulating cylinder 12 for leading out current. The number of the neutral point contacts 1 is two, and the neutral point contacts are arranged on the insulating cylinder 12 corresponding to the upper side and the lower side of the conductive plate 5 respectively.
The insulation bush 11 is fixedly sleeved on the insulation main shaft 4 and can rotate along with the insulation main shaft 4; the insulating bush 11 is made of insulating material, and an inner hole matched with the shape of the insulating main shaft 4 is formed in the insulating bush, so that the insulating bush 11 can be synchronously driven to rotate when the insulating main shaft 4 rotates, and meanwhile, the relative rotation between the insulating bush and the insulating main shaft can be avoided.
The moving contact support 6 is fixed on the outer wall of the insulating bush 11 (hollow support body) corresponding to the static contact 2, and a slide way is arranged on one side of the inside of the moving contact support facing the inner wall of the insulating cylinder 12, and the moving contact support 6 can rotate clockwise or anticlockwise along with the insulating bush 11. The moving contact support 6 is of a hollow structure, and an inner slide way of the moving contact support is opened towards one side of the inner wall of the insulating cylinder 12; at the same time, both sides of the moving contact support 6 are provided with a through hole for the flexible connection 10 to extend into and be connected with the side surface of the moving contact 8.
The moving contact 8 is arranged in the slideway of the moving contact support 6 and can slide out of or into the slideway to keep contact with the contact end of the static contact 2 after rotating along with the insulating main shaft 4 (pushed by a spring 9). The moving contact 8 is five sheet conductors which are overlapped and arranged in the slide way of the moving contact support 6.
The spring 9 is arranged in the moving contact support 6, and the two ends of the spring are respectively provided with the outer wall of the insulating bush 11 and one side of the moving contact 8 facing the insulating bush 11, so as to push the moving contact 8 to slide out of the moving contact support 6 and compress the static contact 2. The number of the springs 9 is also five; a spring 9 is connected between each moving contact 8 and the insulating bush 11. Each movable contact 8 is kept in close contact with the stationary contact 2 by an independent spring 9. The above structure can be applied to the up and down displacement of the moving contact 8 caused by assembly or part errors.
The conducting plate 5 is annularly arranged outside the moving contact support 6 and is made of conducting materials.
Two ends of the flexible coupling 10 are respectively connected to the side wall of the conductive plate 5 and the side wall of the movable contact 8 (through compression bolts), and the flexible coupling 10 is made of flexible copper foil or a copper cable or a copper braided wire. Five soft-connected ones 10; each moving contact 8 is respectively connected (conducted) with the conducting plate 5 through a flexible connection 10.
Two ends of the second soft connection 3 are respectively connected to the neutral point contact 1 and the conductive plate 5 (through compression bolts) and are made of soft copper foil or copper cables or copper braided wires. In order to reduce the length of the second soft connection 3, simplify the structure and save the cost, the middle part of the second soft connection 3 penetrates through the insulating main shaft 4. The number of the soft connection two 3 is also two; each neutral point contact 1 is respectively connected and conducted with the upper side and the lower side of the conductive plate 5 through a soft connection II 3.
When the moving contact 8 rotates along with the insulating main shaft 4 to contact the middle part of the static contact 2, the current flowing to the tapping switch sequentially passes through the static contact 2, the moving contact 8, the soft connection I10, the conductive plate 5, the soft connection II 3 and the neutral point contact 1 and then is output.
When the moving contact 8 switches gears, the insulating main shaft 4 rotates by a certain angle, the insulating main shaft 4 drives the moving contact support 6 to synchronously rotate, the relative positions of the insulating triangular main shaft 4, the moving contact support 6 and the static contact 2 are fixed, when the moving contact 8 is rotated to be in contact with the static contact 2, the moving contact 8 slides along a slide way in the moving contact support 4, a spring 9 behind the moving contact 8 provides contact pressure at the moment, the fact that the contact pressure meets the current carrying capacity of the contact is guaranteed, and when the moving contact 8 moves to the middle position of the static contact 2, the tapping switch reaches a preset gear. At this time, the current flowing to the tap switch passes through the static contact 2, the moving contact 8, the soft connection I10, the conducting plate 5, the soft connection II 3 and the neutral point contact 1 in sequence and is finally output.
Example two:
the present embodiment is different from the first embodiment in that:
in order to ensure the accuracy and stability of the sliding direction of the moving contact 8.
A guide groove 13 is arranged in the middle of each moving contact 8, and a pin rod 7 penetrating through the guide grooves 13 of all the moving contacts 8 is vertically fixed on the moving contact support 6; all the movable contacts 8 slide back and forth in the movable contact support 6 along the pin 7 under the guidance of the guide groove 13.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The protection scope of the present invention is not limited to the technical solution disclosed in the specific embodiment, and all the modifications, equivalent replacements, improvements, etc. made by the technical entity of the present invention to the above embodiments all fall into the protection scope of the present invention.
Claims (10)
1. A cage-shaped non-excitation tapping switch with a soft-connected moving contact structure comprises an insulating cylinder and an insulating main shaft which is sleeved in the insulating cylinder and can rotate; the device is characterized in that at least one phase contact assembly is arranged between the insulating cylinder and the insulating main shaft from top to bottom, and each phase contact assembly comprises a static contact, a neutral point contact, an insulating bush, a moving contact support, a moving contact, a spring, a conductive plate, a first soft connection and a second soft connection; the number of the static contacts is multiple and the static contacts are arranged on the insulating cylinder in an annular mode, the contact end of each static contact is located in the insulating cylinder, and the wiring end of each static contact is located outside the insulating cylinder; the neutral point contact is arranged on the insulating cylinder and extends into the insulating cylinder; the insulation bushing is fixedly sleeved on the insulation main shaft and can rotate along with the insulation main shaft; the moving contact support is fixed on the outer wall of the insulating bush corresponding to the fixed contact and is internally provided with a slide way towards one side of the inner wall of the insulating cylinder; the moving contact is arranged in a slideway of the moving contact support and can slide out of or into the slideway to be kept in contact with a contact end of the static contact after rotating along with the insulating main shaft; the spring is arranged in the moving contact support, and the two ends of the spring are respectively provided with the outer wall of the insulating bush and one side of the moving contact facing the insulating bush, so as to push the moving contact to slide out of the moving contact support and press the static contact; the conductive plate is annularly arranged outside the moving contact support; two ends of the first soft connection are respectively connected to the side wall of the current conducting plate and the side wall of the moving contact; two ends of the second soft connection are respectively connected to the neutral point contact and the conductive plate; when the moving contact rotates along with the insulating main shaft to be contacted with the middle part of the static contact, the current flowing to the tapping switch is output after sequentially passing through the static contact, the moving contact, the first soft connection, the current conducting plate, the second soft connection and the neutral point contact.
2. The moving contact structure with the soft connection of the cage-shaped off-circuit tap-changer according to claim 1, wherein the insulating main shaft is an insulating triangular main shaft.
3. The moving contact structure with the soft connection of the cage-shaped off-circuit tap-changer according to claim 1 is characterized in that a three-phase contact assembly is arranged between the insulating cylinder and the insulating main shaft from top to bottom.
4. The movable contact structure with the soft connection of the cage-shaped off-circuit tap-changer according to claim 1, wherein each phase of contact assembly comprises five gears, namely the number of the fixed contacts is five.
5. The moving contact structure with the soft connection of the cage-shaped off-circuit tap-changer according to claim 1, wherein the first soft connection and the second soft connection are made of soft copper foil or copper cables or copper braided wires.
6. The movable contact structure with the soft connection of the cage-shaped off-circuit tap-changer according to claim 1, wherein the middle part of the two soft connections penetrates through the insulating main shaft.
7. The moving contact structure with the soft connection of the cage-shaped off-circuit tap-changer according to claim 1, wherein the number of the neutral point contacts is two, and the number of the corresponding soft connection two is also two; each neutral point contact is respectively connected and conducted with the upper side and the lower side of the conductive plate through a second flexible connection.
8. The moving contact structure with soft connection of the cage-shaped off-circuit tap-changer according to any one of claims 1 to 7, characterized in that the moving contact is a plurality of sheet conductors overlapped and arranged in a sliding way of a moving contact support; correspondingly, the number of the first soft connection and the number of the springs are also multiple; each moving contact is connected with the current conducting plate through a flexible connection I, and a spring is connected between each moving contact and the bushing.
9. The movable contact structure with soft connection for the cage-shaped off-circuit tap-changer according to claim 8, wherein the number of the movable contacts is five, and the number of the soft connection one and the number of the springs are also five.
10. The moving contact structure with soft connection of the cage-shaped off-circuit tap-changer according to claim 8 is characterized in that a guide groove is arranged in the middle of each moving contact, and a pin rod penetrating through the guide grooves of all the moving contacts is vertically fixed on a moving contact support; all moving contacts slide back and forth in the moving contact support along the pin rod under the guidance of the guide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121654758.9U CN215007960U (en) | 2021-07-21 | 2021-07-21 | Moving contact structure with soft connection of cage-shaped off-circuit tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121654758.9U CN215007960U (en) | 2021-07-21 | 2021-07-21 | Moving contact structure with soft connection of cage-shaped off-circuit tap changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215007960U true CN215007960U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121654758.9U Active CN215007960U (en) | 2021-07-21 | 2021-07-21 | Moving contact structure with soft connection of cage-shaped off-circuit tap changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215007960U (en) |
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2021
- 2021-07-21 CN CN202121654758.9U patent/CN215007960U/en active Active
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Effective date of registration: 20221226 Address after: 563000 A1 (office building), Phase I of Relocation and Capacity Expansion Technical Transformation Project, No. 1, Wuhan Road, Huichuan District, Zunyi, Guizhou Patentee after: Guizhou Chenting Power Equipment Manufacturing Co.,Ltd. Address before: No. 561, Linchuan Road, Zunyi District, Guizhou Province Patentee before: GUIZHOU CHANGZHENG ELECTRIC Co.,Ltd. |