CN210349692U - Mechanical maintaining device of vacuum circuit breaker - Google Patents
Mechanical maintaining device of vacuum circuit breaker Download PDFInfo
- Publication number
- CN210349692U CN210349692U CN201921562362.4U CN201921562362U CN210349692U CN 210349692 U CN210349692 U CN 210349692U CN 201921562362 U CN201921562362 U CN 201921562362U CN 210349692 U CN210349692 U CN 210349692U
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- Prior art keywords
- circuit breaker
- vacuum circuit
- hook
- shunt
- sleeve
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Abstract
The utility model relates to the field of coal mine power supply, and discloses a mechanical maintaining device of a vacuum circuit breaker, which comprises a maintaining hook, a tension spring, a supporting rod, a shunt tripping connecting rod and a manual seesaw, wherein one end of the maintaining hook, which is close to a hook head, is hinged with a shell fixing plate through a first rotating shaft, the supporting rod is arranged below one end, which is far away from the hook head, the middle part of the maintaining hook is connected with a closing electromagnet fixing plate through the tension spring positioned above, the supporting rod is arranged in a sleeve through an energy storage spring, and the sleeve is fixedly arranged on a connecting plate; the manual seesaw is arranged outside the vacuum circuit breaker shell through a second rotating shaft, one end of the shunt tripping connecting rod is arranged in the sleeve and matched with the supporting rod, and the other end of the shunt tripping connecting rod penetrates through the shunt coil and the vacuum circuit breaker shell in sequence and then is connected with one end of the manual seesaw. The novel vacuum circuit breaker is simple in structure, convenient to operate and wear-resistant, and can be widely applied to the field of vacuum circuit breakers.
Description
Technical Field
The utility model relates to a colliery power supply field, concretely relates to vacuum circuit breaker's mechanical maintenance device.
Background
In the underground coal mine, the mining explosion-proof vacuum feed switch is mainly used as a low-voltage feed switch of a mobile substation on a mining working face and provides 1140V or 660V power supply for the mining working face. The original working process is as follows: the switching-on button is pressed, the switching-on coil is electrified, the hook is kept to act and be locked, the switching-on coil is powered off, the vacuum circuit breaker is kept in a switching-on state, the switching-off button is pressed during power failure, the switching-off button is transmitted through the decompression and shunt release connecting rod, the holding shaft is opened, and the hook is kept to act under the action of the switching-off spring to disconnect the vacuum circuit breaker.
Taking a mining explosion-proof vacuum feed switch with the model number of KBZ-400/1140.660 as an example, in the actual use process, along with the increase of power failure and power transmission times, the abrasion of a retaining hook and the deformation of a retaining shaft and a decompression tripping connecting rod are caused, so that after the electric switch-on, the retaining hook cannot be locked and the switch-on of a vacuum circuit breaker cannot be maintained.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the deficiencies in the prior art, the technical problem who solves is: provided is a mechanical maintaining device of a vacuum circuit breaker, so as to improve the service life of the vacuum circuit breaker.
In order to solve the technical problem, the utility model discloses a technical scheme be: a mechanical maintaining device of a vacuum circuit breaker comprises a maintaining hook, a tension spring, a supporting rod, a shunt tripping connecting rod and a manual seesaw, wherein one end of the maintaining hook, which is close to a hook head, is hinged with a shell fixing plate through a first rotating shaft, the supporting rod is arranged below one end, which is far away from the hook head, the middle part of the maintaining hook is connected with a closing electromagnet fixing plate through the tension spring positioned above the maintaining hook, the supporting rod is arranged in a sleeve through an energy storage spring, and the sleeve is fixedly arranged on a connecting plate; the manual seesaw is arranged outside the vacuum circuit breaker shell through a second rotating shaft, one end of the shunt tripping connecting rod is arranged in the sleeve and matched with the supporting rod, and the other end of the shunt tripping connecting rod penetrates through the shunt coil and the vacuum circuit breaker shell in sequence and then is connected with one end of the manual seesaw.
The connecting plate is further provided with a first positioning portion and a second positioning portion, and one end of the shunt tripping connecting rod penetrates through the positioning holes in the first positioning portion and the second positioning portion and then is arranged in the sleeve.
One end, close to the sleeve, of the shunt tripping connecting rod is provided with a threaded portion, an adjusting nut is arranged on the threaded portion, a return spring is further arranged on the shunt tripping connecting rod, and the return spring is arranged between the adjusting nut and the second positioning portion.
And the periphery of the shunt release connecting rod is also fixedly provided with a positioning shaft sleeve, and the positioning shaft sleeve is used for being matched with a second positioning part to limit the motion of the shunt release connecting rod.
The sleeve is provided with a through hole for the end part of the shunt tripping connecting rod to pass through, and the supporting rod is provided with a clamping groove for being matched with the end part of the shunt tripping connecting rod.
The supporting rod comprises a thick rod part positioned above and a thin rod part positioned below, and the end part of the shunt tripping connecting rod is as high as the top of the thin rod part.
The connecting plate, the shell fixing plate and the closing electromagnet fixing plate are fixedly connected with the vacuum circuit breaker shell.
Compared with the prior art, the utility model following beneficial effect has: the utility model provides a vacuum circuit breaker's machinery maintenance device through setting up bracing piece and shunt opening dropout connecting rod, can realize vacuum circuit breaker's combined floodgate, and separating brake and hand divide the operation, its simple structure, convenient operation, stand wear and tear, can wide application in the vacuum circuit breaker field.
Drawings
Fig. 1 is a front view of a mechanical maintaining device of a vacuum circuit breaker according to an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
in the figure: the device comprises a retaining hook 1, a tension spring 2, a support rod 3, a shunt tripping connecting rod 4, a manual seesaw 5, a first rotating shaft 6, a shell fixing plate 7, a hook head 8, an energy storage spring 9, a sleeve 10, a connecting plate 11, a second rotating shaft 12, a vacuum circuit breaker shell 13, a shunt coil 14, a closing electromagnet fixing plate 15, a first positioning part 16, a second positioning part 17, a threaded part 18, an adjusting nut 19, a return spring 20, a positioning shaft sleeve 21, a thick rod part 22, a thin rod part 23, an armature rotating shaft 24, a through hole 25, a shunt spring 26 and an armature 27.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-2, an embodiment of the present invention provides a mechanical maintaining device for a vacuum circuit breaker, including a maintaining hook 1, a tension spring 2, a supporting rod 3, a shunt tripping connecting rod 4 and a manual seesaw 5, wherein one end of the maintaining hook 1 close to a hook head 8 is hinged to a housing fixing plate 7 through a first rotating shaft 6, the supporting rod 3 is arranged below one end far away from the hook head 8, the middle part of the maintaining hook 1 is connected to a closing electromagnet fixing plate 15 through the tension spring 2 located above, the supporting rod 3 is arranged in a sleeve 10 through an energy storage spring 9, and the sleeve 10 is fixedly arranged on a connecting plate 11; the manual seesaw 5 is arranged outside the vacuum circuit breaker shell 13 through the second rotating shaft 12, one end of the shunt tripping connecting rod 4 is arranged in the sleeve 10 and matched with the supporting rod 3, and the other end of the shunt tripping connecting rod penetrates through the shunt coil 14 and the vacuum circuit breaker shell 13 in sequence and then is connected with one end of the manual seesaw 5. The energy storage spring 9 is arranged to keep the support rod moving up and down when the hook moves.
Specifically, as shown in fig. 2, the connecting plate 11 is further provided with a first positioning portion 16 and a second positioning portion 17, and one end of the shunt trip link 4 passes through the positioning holes of the first positioning portion 16 and the second positioning portion 17 and is then disposed in the sleeve 10. The two positioning portions 16 and 17 are provided to move the shunt trip link 4 in a straight line to prevent deviation.
Specifically, as shown in fig. 2, one end of the shunt trip link 4 close to the sleeve 10 is provided with a threaded portion 18, the threaded portion 18 is provided with an adjusting nut 19, the shunt trip link 4 is further provided with a return spring 20, and the return spring 20 is disposed between the adjusting nut 19 and the second positioning portion 17.
Specifically, as shown in fig. 2, a positioning shaft sleeve 21 is further fixedly disposed on the periphery of the shunt tripping connecting rod 4, and the positioning shaft sleeve 21 is used for being matched with the second positioning portion 17 to limit the movement of the shunt tripping connecting rod 4.
Specifically, in this embodiment, the sleeve 10 is provided with a through hole 25 through which the end of the shunt tripping link 4 passes, and the support rod 3 is provided with a clamping groove for matching with the end of the shunt tripping link 4. In addition, in this embodiment, the supporting rod 3 may further include a thick rod portion 22 located above and a thin rod portion 23 located below, and an end of the shunt trip link 4 is at the same height as a top of the thin rod portion 23. The clamping groove and the diameter-variable part are arranged so that on the premise of closing, the support rod 3 can be supported by the shunt tripping connecting rod 4 and cannot descend, the tail part of the holding hook is supported, the hook head 8 of the holding hook can hook the armature, and the armature cannot fall down even under the condition of power failure of a closing coil.
Specifically, in this embodiment, the connecting plate 11, the housing fixing plate 7, and the closing electromagnet fixing plate 15 are fixedly connected to the vacuum circuit breaker housing 13, and the closing electromagnet fixing plate is a plate for fixing the closing electromagnet.
In particular, in the present embodiment, a straight edge 28 is provided at the hook head 8 of the retaining hook, and a square recess 29 is provided above the straight edge 28 for receiving the end of the armature. The straight edge 28 facilitates the movement of the armature into the square recess to be caught by the retaining hook 1.
The working principle of the utility model is as follows: after a closing button is pressed, a closing loop of a control system is connected with a closing coil, an armature 27 is attracted by the magnetic force of the closing coil, a switch tube contact is closed through a transmission connecting lever, meanwhile, a holding hook 1 bounces under the action of a tension spring 2 and the armature 27, a support rod 3 bounces under the action of an energy storage spring and is supported at the tail of the holding hook 1, one end of a shunt tripping connecting rod 4 penetrates through a sleeve 10 and is clamped on a diameter-variable portion of the support rod 3, and the support rod 3 is self-locked and is maintained in a closing state; the power supply of the closing coil is cut off at this time, the tension spring 2 and the support rod 3 act simultaneously to enable the retaining hook 1 to keep upward, the hook head 8 of the retaining hook buckles the armature 27 to keep the switch contact closed, and the corresponding opening spring 26 stores energy; when electricity is used, a control system excites the shunt coil 14, the shunt tripping connecting rod 4 moves in a direction far away from the supporting rod 9 under the action of the shunt coil 14, so that the supporting rod 3 loses self-locking downward movement, after the tail part of the holding hook 1 loses the support of the supporting rod, the hook head 8 cannot support the armature 27 to keep closing under the action of the shunt spring 26, the armature 27 moves downward to leave the hook head of the holding hook 1, the contacts of the circuit breaker real switch tube are rapidly separated, meanwhile, when the armature 27 moves downward to leave the hook head of the holding hook 1, the hook head 8 of the holding hook is driven to rotate leftward, the tail part of the holding hook also moves downward to press the supporting rod 3 into the sleeve 10, and at the moment, the energy storage spring 9 compresses stored energy to prepare for next closing, so that one-time of closing and opening operation is completed; the outer side end of the shunt tripping connecting rod 4 is connected with one end of the seesaw 5, one end of the seesaw is pressed, the other end of the seesaw tilts, the shunt tripping connecting rod 4 moves towards the direction far away from the supporting rod 3 due to the fact that the other end of the seesaw is connected with the shunt tripping connecting rod 4, the supporting rod 3 loses self-locking, the retaining hook 1 also moves downwards under the driving of the armature, and hand-separating operation is completed in a brake-separating state.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. A mechanical maintaining device of a vacuum circuit breaker is characterized by comprising a maintaining hook (1), a tension spring (2), a supporting rod (3), a shunt tripping connecting rod (4) and a manual seesaw (5), wherein one end, close to a hook head (8), of the maintaining hook (1) is hinged to a shell fixing plate (7) through a first rotating shaft (6), the supporting rod (3) is arranged below one end, far away from the hook head (8), of the maintaining hook (1), the middle of the maintaining hook (1) is connected with a closing electromagnet fixing plate (15) through the tension spring (2) located above the maintaining hook, the supporting rod (3) is arranged in a sleeve (10) through an energy storage spring (9), and the sleeve (10) is fixedly arranged on a connecting plate (11); manual seesaw (5) set up outside vacuum circuit breaker casing (13) through second pivot (12), the one end setting of shunt release connecting rod (4) is in sleeve (10) with bracing piece (3) cooperation, the other end passes shunt coil (14) and vacuum circuit breaker casing (13) in proper order after be connected with the one end of manual seesaw (5).
2. The mechanical maintaining device of the vacuum circuit breaker according to claim 1, wherein the connecting plate (11) is further provided with a first positioning portion (16) and a second positioning portion (17), and one end of the shunt trip link (4) is disposed in the sleeve (10) after passing through the positioning holes of the first positioning portion (16) and the second positioning portion (17).
3. The mechanical maintaining device of the vacuum circuit breaker according to claim 2, wherein one end of the shunt trip link (4) close to the sleeve (10) is provided with a threaded portion (18), the threaded portion (18) is provided with an adjusting nut (19), the shunt trip link (4) is further provided with a return spring (20), and the return spring (20) is arranged between the adjusting nut (19) and the second positioning portion (17).
4. The mechanical maintaining device of the vacuum circuit breaker according to claim 2, wherein a positioning bushing (21) is further fixedly disposed on the outer periphery of the shunt trip link (4), and the positioning bushing (21) is used for cooperating with the second positioning portion (17) to limit the movement of the shunt trip link (4).
5. Mechanical holding device of vacuum circuit breaker according to claim 1, characterized in that the sleeve (10) is provided with a through hole for passing the end of the shunt trip link (4), and the support rod (3) is provided with a slot for cooperating with the end of the shunt trip link (4).
6. Mechanical holding device of vacuum circuit breaker according to claim 1, characterized in that the support rod (3) comprises a thick rod part (22) at the top and a thin rod part (23) at the bottom, and the end of the shunt trip link (4) is at the same height as the top of the thin rod part (23).
7. Mechanical maintaining device of vacuum circuit breaker according to claim 1, characterized in that the connecting plate (11), the housing fixing plate (7) and the closing electromagnet fixing plate (15) are fixedly connected with the vacuum circuit breaker housing (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921562362.4U CN210349692U (en) | 2019-09-19 | 2019-09-19 | Mechanical maintaining device of vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921562362.4U CN210349692U (en) | 2019-09-19 | 2019-09-19 | Mechanical maintaining device of vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210349692U true CN210349692U (en) | 2020-04-17 |
Family
ID=70177656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921562362.4U Expired - Fee Related CN210349692U (en) | 2019-09-19 | 2019-09-19 | Mechanical maintaining device of vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210349692U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540639A (en) * | 2020-05-14 | 2020-08-14 | 湖南创安防爆电器有限公司 | Vacuum contactor |
-
2019
- 2019-09-19 CN CN201921562362.4U patent/CN210349692U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540639A (en) * | 2020-05-14 | 2020-08-14 | 湖南创安防爆电器有限公司 | Vacuum contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200417 Termination date: 20200919 |