CN105448553A - Ground protection switch - Google Patents
Ground protection switch Download PDFInfo
- Publication number
- CN105448553A CN105448553A CN201510892775.9A CN201510892775A CN105448553A CN 105448553 A CN105448553 A CN 105448553A CN 201510892775 A CN201510892775 A CN 201510892775A CN 105448553 A CN105448553 A CN 105448553A
- Authority
- CN
- China
- Prior art keywords
- casing
- protection switch
- ground protection
- moving contact
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a ground protection switch. The ground protection switch comprises a box body, a moving contact, an air cylinder mounted in the box body and a driving assembly used for driving the air cylinder; the moving contact is hinged and mounted on the box body through a rotary shaft; one end of the rotary shaft extends into the box body and is connected with a swing arm; a piston rod of the air cylinder is connected with the swing arm through a connecting rod; the two ends of the connecting rod are hinged with the piston rod and the swing arm; a fixed contact is arranged on the outer side of the box body; a safety clamp for elastically clamping the moving contact is arranged on the outer wall of the box body; and the static contact and the safety clamp are both positioned in a swinging motion track of the moving contact around the rotary shaft. The ground protection switch has the advantages of simple structure, stable and reliable operation, capabilities of realizing automatic control, saving manpower, and avoiding safety risks existing in manual operations, and the like.
Description
Technical field
The present invention relates to railway transportation equipment technical field, be specifically related to a kind of ground protection switch being applicable to the track vehicles such as high ferro, motor train unit, electric locomotive and subway.
Background technology
Ground protection switch is arranged on power locomotive top, and its effect is when electric locomotive overhauls, and by ground protection switch combined floodgate ground connection, by electricity release more than on main circuit of electric locomotive, when guaranteeing maintenance, locomotive is in electroless state.Protection maintainer personal safety.
Traditional ground protection switch is manual control mode, is grounded separating brake and the combined floodgate of protection switch, there is the shortcomings such as inconvenient operation, automaticity are not high, and there is certain security risk by rotating operation handle.Along with the develop rapidly of train technical, some manually operated equipment certainly will replace by electrical control equipment.In addition, because earthed switch is installed on roof, meet cold ice and snow weather, easily form accumulated snow accumulated ice etc. in positions such as safety clamps, affect the operation of earthed switch.This problem does not also well solve at present.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency overcoming prior art existence, provides the ground protection switch that a kind of structure is simple, working stability reliable, can realize Automated condtrol, save security risk that is artificial, that avoid manual hand manipulation to exist.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of ground protection switch, comprise casing, moving contact, be installed on cylinder in casing and for driving the driven unit of described cylinder, described moving contact is installed on casing by rotating shaft is hinged, one end of described rotating shaft to be stretched in casing and is connected with swing arm, the piston rod of described cylinder is connected with swing arm by a connecting rod, the two ends of described connecting rod respectively with piston rod and swing arm hinged, the outside of described casing is provided with fixed contact, the outer wall of described casing is provided with the safety clamp for resilient clamp moving contact, described fixed contact and safety clamp are all positioned on the track of described moving contact oscillating motion around the shaft.
Above-mentioned ground protection switch, preferably, stops that it stretches out during the complete retraction of the piston rod that described ground protection switch is also included in cylinder, stops the elastic spacing mechanism of its retraction when the piston rod of cylinder stretches out completely.
Above-mentioned ground protection switch; preferably; described elastic spacing mechanism comprises coil tension spring, the hinged guide post being installed on the spring base on cabinet wall and being articulated with in swing arm; described guide post is slidedly arranged in spring base; described coil tension spring is sheathed on guide post; and one end of coil tension spring and spring base offset, the boss on the other end and guide post offsets.
Above-mentioned ground protection switch; preferably; described driven unit comprises the electromagnetically operated valve be connected with source of the gas and two joints be fixedly mounted on casing; two working holes of described electromagnetically operated valve are corresponding to be respectively connected with the external tapping end of two joints, and two air inlet/outlets of described cylinder are corresponding to be respectively connected with the inner joint end of two joints.
Above-mentioned ground protection switch, preferably, is also equiped with automatic heating device in described casing, and the outer wall of described casing is provided with the connector socket be connected with automatic heating device.
Above-mentioned ground protection switch, preferably, described casing is also provided with quick-action switch, described rotating shaft is also connected with the cam for triggering described quick-action switch.
Compared with prior art; the invention has the advantages that: ground protection switch of the present invention adopts cylinder, the combined mechanism of connecting rod and swing arm drives moving contact action; realize separating brake, closing function; do not need manpower intervention; the security risk can realize Automated condtrol, its structure is simple, working stability is reliable, can saved manually, avoid manual hand manipulation to exist.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of ground protection switch of the present invention.
Fig. 2 is the side-looking structural representation of ground protection switch of the present invention.
Fig. 3 is the plan structure schematic diagram of ground protection switch of the present invention.
Fig. 4 is the structural representation that the piston rod of cylinder is in complete retraction state.
Fig. 5 is the structural representation that the piston rod of cylinder is in state of partly stretching out.
Fig. 6 is the structural representation that the piston rod of cylinder is in state of stretching out completely.
Marginal data:
1, casing; 2, moving contact; 3, cylinder; 31, piston rod; 4, driven unit; 41, electromagnetically operated valve; 42, joint; 5, rotating shaft; 6, swing arm; 7, connecting rod; 8, fixed contact; 9, safety clamp; 10, coil tension spring; 11, spring base; 12, guide post; 13, heater; 14, connector socket; 15, quick-action switch; 16, cam.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1 to Figure 3, ground protection switch of the present invention, comprise casing 1, moving contact 2, be installed on cylinder 3 in casing 1 and for driving the driven unit 4 of cylinder 3, moving contact 2 is installed on casing 1 by rotating shaft 5 is hinged, one end of rotating shaft 5 to be stretched in casing 1 and is connected with swing arm 6, the piston rod 31 of cylinder 3 is connected with swing arm 6 by a connecting rod 7, the two ends of connecting rod 7 respectively with piston rod 31 and swing arm 6 hinged, the outside of casing 1 is provided with fixed contact 8, the outer wall of casing 1 is provided with the safety clamp 9 for resilient clamp moving contact 2, fixed contact 8 and safety clamp 9 are all positioned on the track of moving contact 25 oscillating motions around the shaft, moving contact 2 around the shaft 5 swings can be pressed in fixed contact 8 and safety clamp 9 respectively.Piston rod 31 stretching motion of control cylinder 3; piston rod 31 orders about the corresponding rotation of rotating shaft 5 by the effect of connecting rod 7 and swing arm 6; and then make moving contact 25 reciprocally swingings within the specific limits around the shaft, when piston rod 31 stretches out completely, moving contact 2 is just pressed in fixed contact 8; ground protection switch closes a floodgate; locomotive major loop ground, when the complete retraction of piston rod 31, moving contact 2 is just pressed in safety clamp 9; ground protection switch separating brake, ground state is removed in locomotive main loop.This ground protection switch adopts cylinder 3, the combined mechanism of connecting rod 7 and swing arm 6 drives moving contact 2 action; realize separating brake, closing function; do not need manpower intervention; the security risk can realize Automated condtrol, its structure is simple, working stability is reliable, can saved manually, avoid manual hand manipulation to exist.
In the present embodiment, driven unit 4 comprises the electromagnetically operated valve 41 be connected with source of the gas and two joints 42 be fixedly mounted on casing 1, two working holes of electromagnetically operated valve 41 connect one to one respectively by the external tapping end (being positioned at the interface end of casing 1 outside) of tracheae and two joints 42, and two air inlet/outlets of cylinder 3 connect one to one respectively by the inner joint end (being positioned at the interface end of casing 1 inside) of tracheae and two joints 42.Above-mentioned electromagnetically operated valve 41 can be arranged in casing 1, also can be arranged in the electrical control cabinet in shop on locomotive.By the direction passing into cylinder 3 of electromagnetically operated valve 41 controlled pressure gas, can control cylinder 3 stretching motion, and then control separating brake and combined floodgate.
In the present embodiment, the piston rod 31 that ground protection switch is also included in cylinder 3 completely retraction time stop that it stretches out, stop the elastic spacing mechanism of its retraction when the piston rod 31 of cylinder 3 stretches out completely.This elastic spacing mechanism comprises coil tension spring 10, the hinged guide post 12 being installed on the spring base 11 on casing 1 inwall and being articulated with in swing arm 6, guide post 12 is slidedly arranged in spring base 11, coil tension spring 10 is sheathed on guide post 12, and one end of coil tension spring 10 and spring base 11 offset, the boss on the other end and guide post 12 offsets.As shown in Figure 4, when ground protection switch is in gate-dividing state, the piston rod 31 of cylinder 3 is in complete retraction state, the pin joint of guide post 12 and swing arm 6 is away from spring base 11, now the elastic force of coil tension spring 10 shows as and stops piston rod 31 to stretch out, make ground protection switch remain on open position, prevent because the reasons such as locomotive vibration cause moving contact 2 to depart from from safety clamp 9, when ground protection switch needs dress to change to "on" position, the piston rod 31 of cylinder 3 stretches out motion, guide post 12 is first gradually near spring base 11 with the pin joint of swing arm 6, again gradually away from spring base 11, gradually in the process of spring base 11, coil tension spring 10 is compressed, its elastic force form shows as the power stopping that piston rod 31 stretches out, when piston rod 31 extend out to position shown in Fig. 5, coil tension spring 10 is compressed to the shortest, then in the process gradually away from spring base 11, coil tension spring 10 discharges elastic force, its elastic force form shows as the power identical with piston rod 31 direction of motion, until piston rod 31 completes when stretching out, ground protection switch closes a floodgate, and as shown in Figure 6, now the elastic force of coil tension spring 10 shows as and stops piston rod 31 retraction, make ground protection switch remain on closing position, prevent because the reasons such as locomotive vibration cause moving contact 2 to depart from from fixed contact 8.This elastic spacing mechanism can not only ensure the reliability of separating brake, combined floodgate, and also drive in the process of moving contact 2 separating brake, combined floodgate at cylinder 3 and play booster action, such as moving contact 2 snaps in fixed contact 8 or safety clamp 9.
In the present embodiment, be also equiped with automatic heating device 13 in casing 1, the outer wall of casing 1 is provided with connector socket 14, and automatic heating device 13, is connected with external power source to connector socket 14 by connector socket 14 by connection.This automatic heating device 13 can arrange the temperature value opened and closed automatically, when ambient temperature is lower than the lower limit temperature set, automatic heating device 13 can be opened automatically, switch internal is heated, when internal temperature reaches the ceiling temperature of setting, automatic heating device 13 can be closed automatically, and this automatic heating device 13 can adopt prior art, and it comprises heating plate, temperature sensor and control unit etc.By automatic heating device 13 regulated ground protection switch internal temperature; in the winter time under cold weather environments; automatic heating device 13 conducts heat by casing 1, melts the ice and snow condensed upon on safety clamp 9, makes the work of ground protection switch not because ice and snow condenses and is affected.
In the present embodiment, casing 1 is also provided with quick-action switch 15, rotating shaft 5 is also connected with the cam 16 for triggering quick-action switch 15.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is also not only confined to above-described embodiment.For those skilled in the art, do not departing from the improvement that obtains under the technology of the present invention concept thereof and conversion also should be considered as protection scope of the present invention.
Claims (6)
1. a ground protection switch, it is characterized in that: comprise casing (1), moving contact (2), be installed on cylinder (3) in casing (1) and for driving the driven unit (4) of described cylinder (3), described moving contact (2) is installed on casing (1) by rotating shaft (5) is hinged, one end of described rotating shaft (5) to be stretched in casing (1) and is connected with swing arm (6), the piston rod (31) of described cylinder (3) is connected with swing arm (6) by a connecting rod (7), the two ends of described connecting rod (7) respectively with piston rod (31) and swing arm (6) hinged, the outside of described casing (1) is provided with fixed contact (8), the outer wall of described casing (1) is provided with the safety clamp (9) for resilient clamp moving contact (2), described fixed contact (8) and safety clamp (9) are all positioned on the track of described moving contact (2) (5) oscillating motion around the shaft.
2. ground protection switch according to claim 1, is characterized in that: the piston rod (31) that described ground protection switch is also included in cylinder (3) completely retraction time stop that it stretches out, stop the elastic spacing mechanism of its retraction when the piston rod (31) of cylinder (3) stretches out completely.
3. ground protection switch according to claim 2; it is characterized in that: described elastic spacing mechanism comprises coil tension spring (10), the hinged guide post (12) being installed on the spring base (11) on casing (1) inwall and being articulated with in swing arm (6); described guide post (12) is slidedly arranged in spring base (11); described coil tension spring (10) is sheathed on guide post (12); and one end of coil tension spring (10) and spring base (11) offset, the boss on the other end and guide post (12) offsets.
4. ground protection switch according to claim 1; it is characterized in that: described driven unit (4) comprises the electromagnetically operated valve (41) be connected with source of the gas and two joints (42) be fixedly mounted on casing (1); two working holes of described electromagnetically operated valve (41) are corresponding to be respectively connected with the external tapping end of two joints (42), and two air inlet/outlets of described cylinder (3) are corresponding to be respectively connected with the inner joint end of two joints (42).
5. ground protection switch according to claim 1, is characterized in that: be also equiped with automatic heating device (13) in described casing (1), and the outer wall of described casing (1) is provided with the connector socket (14) be connected with automatic heating device (13).
6. ground protection switch according to claim 1, is characterized in that: described casing (1) is also provided with quick-action switch (15), described rotating shaft (5) is also connected with the cam (16) for triggering described quick-action switch (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510892775.9A CN105448553A (en) | 2015-12-08 | 2015-12-08 | Ground protection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510892775.9A CN105448553A (en) | 2015-12-08 | 2015-12-08 | Ground protection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105448553A true CN105448553A (en) | 2016-03-30 |
Family
ID=55558635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510892775.9A Pending CN105448553A (en) | 2015-12-08 | 2015-12-08 | Ground protection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105448553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706964A (en) * | 2019-10-24 | 2020-01-17 | 中车株洲电力机车有限公司 | High-voltage grounding switch, high-voltage electrical appliance box and vacuum circuit breaker grounding method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202110993U (en) * | 2011-05-27 | 2012-01-11 | 湛江高压电器有限公司 | Special grounding knife device |
| CN203895344U (en) * | 2014-04-11 | 2014-10-22 | 珠海经济特区广达电器设备有限公司 | Electric mechanism isolation switch control box |
| EP2879146A1 (en) * | 2013-11-29 | 2015-06-03 | Schneider Electric Industries SAS | A linkage for actuating a disconnector switch blade for synchronising a sbs with disconnector switch of rmu |
| CN204577303U (en) * | 2015-04-16 | 2015-08-19 | 北京赛德高科铁道电气科技有限责任公司 | A kind of motor train unit earthed switch |
| CN205282301U (en) * | 2015-12-08 | 2016-06-01 | 株洲庆云电力机车配件工厂有限公司 | Ground connection protection switch |
-
2015
- 2015-12-08 CN CN201510892775.9A patent/CN105448553A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202110993U (en) * | 2011-05-27 | 2012-01-11 | 湛江高压电器有限公司 | Special grounding knife device |
| EP2879146A1 (en) * | 2013-11-29 | 2015-06-03 | Schneider Electric Industries SAS | A linkage for actuating a disconnector switch blade for synchronising a sbs with disconnector switch of rmu |
| CN203895344U (en) * | 2014-04-11 | 2014-10-22 | 珠海经济特区广达电器设备有限公司 | Electric mechanism isolation switch control box |
| CN204577303U (en) * | 2015-04-16 | 2015-08-19 | 北京赛德高科铁道电气科技有限责任公司 | A kind of motor train unit earthed switch |
| CN205282301U (en) * | 2015-12-08 | 2016-06-01 | 株洲庆云电力机车配件工厂有限公司 | Ground connection protection switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706964A (en) * | 2019-10-24 | 2020-01-17 | 中车株洲电力机车有限公司 | High-voltage grounding switch, high-voltage electrical appliance box and vacuum circuit breaker grounding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |