CN209981023U - Medium-voltage three-station isolating switch operating mechanism - Google Patents
Medium-voltage three-station isolating switch operating mechanism Download PDFInfo
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- CN209981023U CN209981023U CN201920788659.6U CN201920788659U CN209981023U CN 209981023 U CN209981023 U CN 209981023U CN 201920788659 U CN201920788659 U CN 201920788659U CN 209981023 U CN209981023 U CN 209981023U
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Abstract
The utility model discloses a medium-voltage three-station isolating switch operating mechanism, the limiting mechanism of which comprises a main shaft and a corner limiting structure, the main shaft and the corner limiting structure are correspondingly arranged on a bracket; the grooved pulley is fixedly arranged on the main shaft, one side edge of the grooved pulley is provided with an isolation locking groove, a brake separating locking groove and a grounding locking groove, and the other side edge of the grooved pulley is provided with a plurality of shifting grooves; the toggle gear is supported on the bracket, one end surface of the toggle gear is provided with a cylindrical pin, and a groove wheel mechanism is formed by matching the cylindrical pin and the toggle groove; the toggle gear is driven to rotate by a motor; one end of the limiting clamping jaw is rotatably arranged, and the other end of the limiting clamping jaw is provided with a locking cylinder; one end of the locking spring is fixed on the bracket, and the other end of the locking spring is connected with the end part of the limiting clamping jaw, which is provided with the locking cylinder; the locking spring always provides force for the locking cylinder to press the grooved wheel. The utility model discloses the reliability is high, and satisfies three station isolator's two kinds of operation methods of electrical operation and manual operation.
Description
Technical Field
The utility model relates to a three station isolator operating device of middling pressure.
Background
In an electric power system, medium-voltage switch equipment is widely applied, and a three-station isolating switch is taken as the medium-voltage switch equipment and is particularly and generally applied to a medium-voltage GIS cabinet. The three-position isolating switch is commonly used in a totally-enclosed combined electrical appliance or a ring main unit and is not a single product. The three working positions refer to three working positions: 1. the closing position of the main fracture of the isolating switch; 2. isolated sites where the main fractures are separated; 3. the ground position of the ground side. The three-position switch integrates the functions of an isolating switch and a grounding switch and is completed by a knife, so that mechanical locking can be realized, and the main loop is prevented from being electrified and being closed. Because one knife can only be in one position, unlike the traditional isolating switch, the main knife is the main knife, the ground knife is the ground knife, and misoperation can occur between the two knives. The three-position isolating switch is provided with a knife, and the working position of the knife is unique at a certain moment, is not in the switching-on position of the main brake, and is in the isolating position or the grounding position. In a traditional GIS, an isolating switch and a grounding switch are two functional units and are controlled by using electrical interlocking, and the existing latest design is to use a three-position isolating switch, so that the possibility of misoperation is avoided.
The operating mechanism of the three-position isolating switch is driven by a spring device, a gear device, a limiting structure and the like. On the premise that the opening and closing speed of the isolating switch is not high, manufacturers research and develop an operating mechanism driven by a spring device, but the operating mechanism driven by the spring device is large in size, large in manufacturing and production difficulty and complex in structural design; the operating mechanism driven by the gear device is easy to cause over-operation, the occurrence probability of the condition that the switch is not in place is high, and potential safety hazards exist. Aiming at the problems, an operating mechanism with a limiting structure is adopted in the industry, but the problems of complex structure and low control precision exist, and in order to solve the problems, a three-position isolating switch operating mechanism with optimized structure and high reliability needs to be designed.
In addition, the miniaturization demand of the market for products is higher and higher, the three-position isolating switch occupies a larger space in the cabinet body, the height of a breaker chamber of the cabinet body can only accommodate the height of a breaker and components on an instrument door, the three-position isolating switch needs to be installed in an independent compartment above the cabinet body, the protection performance of the cabinet instrument chamber has higher requirements, the design cost is improved, the three-position isolating switch is established on the volume of equipment in the optimized cabinet, and the switching equipment meeting the requirements of miniaturization and portability of the equipment can be the mainstream for matching with the GIS cabinet body in the future.
Chinese patent No. 201620172709.4 discloses a stop gear capable of effectively preventing misoperation of three-position isolating switch, the utility model discloses combine this stop gear with other innovative structures, improve the optimization to three-position isolating switch's operating device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a middling pressure three-station isolating switch operating device is provided, its reliability is high, and satisfies three-station isolating switch's two kinds of operating modes of electrical operation and manual operation.
Solve above-mentioned technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a three station isolator operating device of middling pressure, its includes stop gear, and stop gear includes main shaft and corner limit structure, and the main shaft links its characterized in that with three station isolator, still includes:
the main shaft and the corner limiting structure are correspondingly arranged on the bracket;
the grooved wheel is fixedly arranged on the main shaft through the middle hole, one side edge of the grooved wheel is provided with an isolation locking groove, an opening locking groove and a grounding locking groove, the opening locking groove is positioned between the isolation locking groove and the grounding locking groove, and the other side edge of the opening locking groove is provided with a plurality of shifting grooves;
the shifting gear is supported on the bracket through a gear shaft, one end face of the shifting gear is provided with a cylindrical pin, and a groove wheel mechanism is formed by matching the cylindrical pin and a shifting groove;
the motor is used for driving the toggle gear to rotate;
one end of the limiting clamping jaw is rotatably arranged, and the other end of the limiting clamping jaw is provided with a locking cylinder; when the three-station isolating switch is in an isolating state, the locking cylinder is clamped in the isolating locking groove; when the three-station isolating switch is in an opening state, the locking cylinder is clamped in the opening locking groove; when the three-station isolating switch is in a grounding state, the locking cylinder is clamped in the grounding locking groove;
one end of the locking spring is fixed on the bracket, and the other end of the locking spring is connected with the end part of the limiting clamping jaw, which is provided with the locking cylinder; the locking spring always provides force for the locking cylinder to press the grooved wheel.
The medium-voltage three-station isolating switch operating mechanism further comprises a motor control circuit board, a travel switch and a travel wheel, wherein the travel wheel is fixedly arranged on the gear shaft, a notch is formed in the travel wheel, the travel switch is correspondingly arranged beside the travel wheel, and a signal end of the travel switch and a control end of the motor are respectively and electrically connected with the motor control circuit board; when the three-station isolating switch is in an isolating state, a brake separating state and a grounding state, the contacts of the travel switch are all positioned in the gap and separated from the wheel surface of the travel wheel; in the switching state process of the three-station isolating switch, the wheel surface of the travel wheel is in contact with the contact of the travel switch to trigger the travel switch.
Four shifting grooves are formed in the grooved pulley, and two cylindrical pins are arranged on the end face of the shifting gear.
The medium-voltage three-station isolating switch operating mechanism further comprises a driving gear, the driving gear is fixedly mounted on an output shaft of the motor, the driving gear is meshed with the toggle gear, and the driving gear is smaller than the toggle gear.
The end part of the limiting clamping jaw which can be rotatably arranged is movably sleeved on a baffle rotating shaft of the corner limiting structure.
The end part of the limiting clamping jaw, which is provided with the locking cylinder, is provided with a connecting pin, and the connecting end part of the locking spring and the limiting clamping jaw is hooked on the connecting pin.
The medium-voltage three-station isolating switch operating mechanism further comprises a motor mounting frame, the motor mounting frame is fixedly mounted on the support, and the motor, the shifting gear and the driving gear are correspondingly mounted on the motor mounting frame.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a stop gear and geneva mechanism, spacing jack catch's cooperation for three station isolator can be more reliable carry out each operating condition's switching, and the reliability is high, and overall structure is simpler. During the use, it is operatable to rotate the main shaft through outside handle the utility model discloses, rotate also can operate through control motor the utility model discloses, it is visible the utility model discloses two kinds of operation modes of electric operation and manual operation have been satisfied.
2. The utility model discloses travel switch and stroke wheel have still further been set up, the rotation of control motor that can be better for the motor can be reliable stall after switching operating condition, has further improved this operating device's reliability.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a schematic structural view of the utility model after the bracket is hidden;
FIG. 3 is a schematic structural view of an electric operation part of the present invention;
fig. 4 is a schematic structural view of a sheave mechanism composed of a toggle gear and a sheave according to the present invention;
fig. 5 is a schematic view of the present invention in use.
The reference numerals in the drawings mean:
1-a scaffold; 1.1-front mounting plate; 1.2-rear mounting plate; 2-grooved wheel; 2.1-ground locking groove; 2.2-opening locking groove; 2.3-isolating the locking groove; 2.4-a toggle groove; 3-baffle rotation axis; 4-toggle gear; 5, a motor; 6-a baffle plate; 7-a main shaft; 8-a stop block; 9-a block mounting plate; 10-a drive gear; 11-a motor mounting bracket; 12-a chute mounting plate; 14-a chute plate; 15-connecting pins; 16-a locking cylinder; 17-limit jaws; 18-a sliding pin; 19-a stroke wheel; 19.1-notch; 20-a gear shaft; 21-a travel switch; 22-a switch mounting; 23-cylindrical pins; 24-a locking spring; 25-linkage rod group.
Detailed Description
The present invention will be further described with reference to the following examples.
The operating mechanism of the medium-voltage three-position isolating switch shown in fig. 1 to 4 comprises a limiting mechanism, a bracket 1, a grooved pulley 2, a toggle gear 4, a motor 5, a limiting claw 17 and a locking spring 24.
The limiting mechanism disclosed in the chinese patent with the patent number 201620172709.4 comprises a main shaft 7, a corner limiting structure, a sliding groove sliding pin limiting structure, a baffle 6 and a baffle rotating shaft 3, wherein the corner limiting structure comprises a baffle mounting plate 9 and two baffles 8, and the sliding groove sliding pin limiting structure comprises a sliding pin 18, two strip-shaped sliding groove plates 14 and two sliding groove mounting plates 12.
The support 1 is provided with a front mounting plate 1.1 and a rear mounting plate 1.2, a stop block mounting plate 9 of the corner limiting structure is mounted in front of the front mounting plate 1.1, two ends of the main shaft 7 are respectively mounted on the front mounting plate 1.1 and the rear mounting plate 1.2 through bearing supports, and the front end of the main shaft 7 penetrates out of the front of the stop block mounting plate 9 of the corner limiting structure. Other parts of the stopper mechanism are correspondingly attached to the structure described in chinese patent No. 201620172709.4.
The grooved wheel 2 is fixedly installed on the main shaft 7 through a middle hole and rotates along with the main shaft 7, an isolation locking groove 2.3, an opening locking groove 2.2 and a grounding locking groove 2.1 are arranged on one side edge of the grooved wheel 2, the opening locking groove 2.2 is located between the isolation locking groove 2.3 and the grounding locking groove 2.1, the isolation locking groove 2.3 is relatively located at the upper end, and the grounding locking groove 2.1 is relatively located at the lower end. And four toggle grooves 2.4 are arranged on the other side edge of the grooved wheel 2. Of course, the number of the toggle slots 2.4 can be set to two, three or even more according to design requirements.
The toggle gear 4 is supported on the bracket 1 through a gear shaft 20, the position of the toggle gear corresponds to the side edge of the grooved pulley 2 provided with the toggle groove 2.4, one end face of the toggle gear 4 is provided with two cylindrical pins 23, and the cylindrical pins 23 are matched with the toggle groove 2.4 to form a grooved pulley mechanism. According to the design demand, the quantity of cylindric lock 23 also can set to one, three, even more, sets up the groove 2.4 and the cylindric lock 23 of stirring of different quantity, can make 4 rotations circles at stirring gear, can stir different angles to sheave 2. Wherein, the motor 5 is used for driving the toggle gear 4 to rotate.
One end of the limiting claw 17 is rotatably arranged, and the other end is provided with a locking cylinder 16. When the three-station isolating switch is in an isolating state, the locking cylinder 16 is clamped in the isolating locking groove 2.3; when the three-station isolating switch is in an opening state, the locking cylinder 16 is clamped in the opening locking groove 2.2; when the three-position isolating switch is in a grounding state, the locking cylinder 16 is clamped in the grounding locking groove 2.1. One end of the locking spring 24 is fixed on the bracket 1, and the other end is connected with the end part of the limiting claw 17 provided with the locking cylinder 16. The locking spring 24 always provides a force for the locking cylinder 16 to press the grooved pulley 2, when the locking cylinder 16 is clamped in the groove through the locking spring 24, certain resistance is generated to the rotation of the grooved pulley 2, the grooved pulley 2 can be rotated only by a certain torque, so that the grooved pulley 2 is locked to a certain extent, and the grooved pulley 2 cannot rotate randomly.
When the three-position disconnecting switch is used, as shown in fig. 5, the main shaft 7 is connected with the three-position disconnecting switch through the linkage rod group 25 to realize linkage, and the main shaft 7 is rotated to rotate the disconnecting knife of the three-position disconnecting switch, so that the working state of the three-position disconnecting switch can be switched. When the main shaft 7 is rotated through the external handle, the limiting mechanism can strictly limit the rotation angle of the handle, so that the phenomena of non-position and over-position cannot occur in the rotation of the main shaft 7, and the occurrence of poor contact and over-position operation conditions after the three-station isolating switch is switched to a working state is avoided. When the switching of the working state of the three-position isolating switch is completed, the locking cylinder 16 of the limiting claw 17 is just clamped in the groove in the corresponding state, and the operating mechanism is locked to a certain extent. Besides the manual operation of the operating mechanism through an external handle, the grooved wheel 2 can be rotated by controlling the rotation of the motor 5, so that the main shaft 7 is driven to rotate.
In order to make the operation of the motor 5 more reliable, the embodiment further includes a motor control circuit board, a travel switch 21 and a travel wheel 19, the travel wheel 19 is fixedly mounted on the gear shaft 20 through a switch mounting frame 22 and rotates along with the gear shaft 20, a notch 19.1 is formed in the travel wheel 19, the travel switch 21 is correspondingly mounted beside the travel wheel 19, and a signal end of the travel switch 21 and a control end of the motor 5 are respectively electrically connected with the motor control circuit board. When the three-station isolating switch is in an isolating state, a brake separating state and a grounding state, the contacts of the travel switch 21 are all positioned in the notch 19.1 and separated from the wheel surface of the travel wheel 19; in the switching state process of the three-position isolating switch, the wheel surface of the travel wheel 19 is in contact with the contact of the travel switch 21, and the travel switch 21 is triggered. The specific process which can be realized is as follows: when a motor rotation signal is input to the motor control circuit board through an external control button, the motor control circuit board controls the motor 5 to be started, the toggle gear 4 is driven to rotate, the travel wheel 19 also rotates along with the rotation, the three-position isolating switch performs working state switching at the moment, in the process, the wheel surface of the travel wheel 19 is in contact with the contact of the travel switch 21, when the three-position isolating switch finishes switching to another working state, the contact of the travel switch is just positioned in the notch 19.1, the travel switch 21 generates a switching value from on to off, and the motor control circuit board receives the switching value sent by the travel switch and disconnects the power supply of the motor 5. As shown in fig. 4, in the initial state, the pin 23 is located at the side far from the sheave 2, and the manual operation is not affected, and the sheave 2 can be rotated by rotating the main shaft 7, and the pin 23 returns to the initial state position every time the motor 5 performs one action.
When the motor 5 is operated, the cylindrical pin 23 of the toggle gear 4 of the embodiment is driven to rotate by an angle of 22.5 degrees from being cut into the toggle groove 2.4 to being separated from the toggle groove 2.4, and when the toggle gear 4 rotates for one period, the sheave 2 moves by 90 degrees, and the three-position isolating switch is switched from the current state to the adjacent other state.
The embodiment further comprises a driving gear 10, the driving gear 10 is fixedly installed on an output shaft of the motor 5, the driving gear 10 is meshed with the toggle gear 4, and the driving gear 10 is smaller than the toggle gear 4.
In order to make the structure more compact and simple, the end part of the limiting jaw 17 which can be rotatably arranged is movably sleeved on the baffle rotating shaft 3 of the corner limiting structure, and the limiting jaw 17 can rotate relative to the baffle rotating shaft 3.
The mounting structure of the locking spring 24 is: the end of the limit claw 17 provided with the locking cylinder 16 is provided with a connecting pin 15, and the end of the locking spring 24 connected with the limit claw is hooked on the connecting pin 15. The other end of the locking spring 24 is fixed on the rear mounting plate 1.2 of the bracket through a bolt.
For better installation motor 5 and gear, this embodiment has still set up motor mounting bracket 11, and motor mounting bracket 11 fixed mounting is on support 1, and motor 5, toggle gear 4 and driving gear 10 correspond and install on motor mounting bracket 11, reserve on support 1 and have sufficient space for motor 5 to make things convenient for motor 5's dismantlement and maintenance.
The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.
Claims (7)
1. The utility model provides a three station isolator operating device of middling pressure, its includes stop gear, stop gear includes main shaft and corner limit structure, the main shaft links its characterized in that with three station isolator, still includes:
the main shaft and the corner limiting structure are correspondingly arranged on the bracket;
the grooved wheel is fixedly arranged on the main shaft through a middle hole, one side edge of the grooved wheel is provided with an isolation locking groove, a brake separating locking groove and a grounding locking groove, the brake separating locking groove is positioned between the isolation locking groove and the grounding locking groove, and the other side edge of the grooved wheel is provided with a plurality of shifting grooves;
the shifting gear is supported on the bracket through a gear shaft, one end face of the shifting gear is provided with a cylindrical pin, and the cylindrical pin is matched with the shifting groove to form a groove wheel mechanism;
the motor is used for driving the toggle gear to rotate;
one end of the limiting clamping jaw is rotatably arranged, and the other end of the limiting clamping jaw is provided with a locking cylinder; when the three-station isolating switch is in an isolating state, the locking cylinder is clamped in the isolating locking groove; when the three-station isolating switch is in an opening state, the locking cylinder is clamped in the opening locking groove; when the three-station isolating switch is in a grounding state, the locking cylinder is clamped in the grounding locking groove;
one end of the locking spring is fixed on the bracket, and the other end of the locking spring is connected with the end part of the limiting clamping jaw, which is provided with the locking cylinder; the locking spring always provides force for the locking cylinder to press the grooved wheel.
2. The medium voltage three position disconnector operating mechanism of claim 1, characterized in that: the medium-voltage three-station isolating switch operating mechanism further comprises a motor control circuit board, a travel switch and a travel wheel, wherein the travel wheel is fixedly mounted on the gear shaft, a notch is formed in the travel wheel, the travel switch is correspondingly mounted beside the travel wheel, and a signal end of the travel switch and a control end of the motor are respectively electrically connected with the motor control circuit board; when the three-station isolating switch is in an isolating state, a brake separating state and a grounding state, the contacts of the travel switch are all positioned in the notch and separated from the wheel surface of the travel wheel; in the switching state process of the three-station isolating switch, the wheel surface of the travel wheel is in contact with the contact of the travel switch to trigger the travel switch.
3. The medium voltage three position disconnector operating mechanism of claim 1, characterized in that: four shifting grooves are formed in the grooved pulley, and two cylindrical pins are arranged on the end face of the shifting gear.
4. The medium voltage three position disconnector operating mechanism of claim 1, characterized in that: the medium-voltage three-station isolating switch operating mechanism further comprises a driving gear, the driving gear is fixedly installed on an output shaft of the motor, the driving gear is meshed with the toggle gear, and the driving gear is smaller than the toggle gear.
5. The medium voltage three position disconnector operating mechanism of claim 1, characterized in that: the end part of the limiting clamping jaw which can be rotatably arranged is movably sleeved on the baffle rotating shaft of the corner limiting structure.
6. The medium voltage three position disconnector operating mechanism of claim 1, characterized in that: the end part, provided with the locking cylinder, of the limiting clamping jaw is provided with a connecting pin, and the connecting end part of the locking spring and the limiting clamping jaw is hooked on the connecting pin.
7. The medium voltage three position isolator operating mechanism of claim 4, wherein: the medium-voltage three-station isolating switch operating mechanism further comprises a motor mounting frame, the motor mounting frame is fixedly mounted on the support, and the motor, the toggle gear and the driving gear are correspondingly mounted on the motor mounting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920788659.6U CN209981023U (en) | 2019-05-28 | 2019-05-28 | Medium-voltage three-station isolating switch operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920788659.6U CN209981023U (en) | 2019-05-28 | 2019-05-28 | Medium-voltage three-station isolating switch operating mechanism |
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| Publication Number | Publication Date |
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| CN209981023U true CN209981023U (en) | 2020-01-21 |
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| CN201920788659.6U Active CN209981023U (en) | 2019-05-28 | 2019-05-28 | Medium-voltage three-station isolating switch operating mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114823207A (en) * | 2022-03-18 | 2022-07-29 | 珠海优特电力科技股份有限公司 | Operating device of three-position disconnecting link switch and three-position disconnecting link switch |
| CN117672736A (en) * | 2024-01-29 | 2024-03-08 | 佛山市顺德区法福特电气有限公司 | External operating mechanism capable of being operated electrically and manually |
-
2019
- 2019-05-28 CN CN201920788659.6U patent/CN209981023U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114823207A (en) * | 2022-03-18 | 2022-07-29 | 珠海优特电力科技股份有限公司 | Operating device of three-position disconnecting link switch and three-position disconnecting link switch |
| CN117672736A (en) * | 2024-01-29 | 2024-03-08 | 佛山市顺德区法福特电气有限公司 | External operating mechanism capable of being operated electrically and manually |
| CN117672736B (en) * | 2024-01-29 | 2024-04-09 | 佛山市顺德区法福特电气有限公司 | External operating mechanism capable of being operated electrically and manually |
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Effective date of registration: 20200820 Address after: Room 1801, 18 / F, Baiyun electric technology building, No. 9 Keyuan Road, Guangzhou private science and Technology Park, No. 1633 Beitai Road, Baiyun District, Guangzhou City, Guangdong Province Co-patentee after: Baiyun Electric Research Institute (Nanjing) Co., Ltd Patentee after: Guangzhou Zhixin Power Technology Co., Ltd Co-patentee after: GUANGZHOU BAIYUN ELECTRIC EQUIPMENT Co.,Ltd. Address before: 510540 Room 105, First Floor, Baiyun Electrical Science and Technology Building, Guangzhou Private Science Park, 1633 Taihe Town, Baiyun District, Guangzhou City, Guangdong Province Co-patentee before: GUANGZHOU BAIYUN ELECTRIC EQUIPMENT Co.,Ltd. Patentee before: GUANGZHOU SHIKE HIGH-NEW TECHNOLOGY Co.,Ltd. Co-patentee before: GUANGZHOU YANGXIN TECHNOLOGY RESEARCH Co.,Ltd. |