CN109473898B - Switch cabinet and valve mechanism thereof - Google Patents

Switch cabinet and valve mechanism thereof Download PDF

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Publication number
CN109473898B
CN109473898B CN201811320930.XA CN201811320930A CN109473898B CN 109473898 B CN109473898 B CN 109473898B CN 201811320930 A CN201811320930 A CN 201811320930A CN 109473898 B CN109473898 B CN 109473898B
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CN
China
Prior art keywords
rod
valve
cabinet
supporting
link
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.)
Active
Application number
CN201811320930.XA
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Chinese (zh)
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CN109473898A (en
Inventor
左智华
王海燕
卢健
沙云鹏
卢留洋
林永鹏
崔文霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Original Assignee
State Grid Corp of China SGCC
Pinggao Group Co Ltd
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Publication date
Application filed by State Grid Corp of China SGCC, Pinggao Group Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201811320930.XA priority Critical patent/CN109473898B/en
Publication of CN109473898A publication Critical patent/CN109473898A/en
Application granted granted Critical
Publication of CN109473898B publication Critical patent/CN109473898B/en
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00Switchgear having carriage withdrawable for isolation
    • H02B11/24Shutters or guards

Abstract

The invention relates to a switch cabinet and a valve mechanism thereof. The valve mechanism includes the valve and drives the link mechanism that the valve moved on the upper and lower direction, link mechanism is including being used for articulating the first connecting rod on the cabinet body and being used for with valve articulated second connecting rod, first connecting rod is articulated with the second connecting rod, the inboard of first connecting rod is equipped with the circuit breaker handcart promotion that supplies the cubical switchboard in order to drive first connecting rod pivoted drive division, be equipped with on first connecting rod of link mechanism and/or the second connecting rod be used for with the inner wall sliding support complex supporting part of the cabinet body, the supporting part is close to the articulated department of first connecting rod and second connecting rod and keeps away from drive division and the articulated department of second connecting rod and valve. When the circuit breaker handcart pushes the driving part to open the valve, the supporting part is close to the hinged position of the first connecting rod and the second connecting rod and is far away from the hinged position of the driving part and the hinged position of the second connecting rod and the valve, and the outward inclination of the first connecting rod and the second connecting rod is avoided, so that the clamping stagnation phenomenon of the first connecting rod and the second connecting rod is avoided.

Description

Switch cabinet and valve mechanism thereof
Technical Field
The invention relates to a switch cabinet and a valve mechanism thereof.
Background
In a handcart type switch cabinet, a valve mechanism is often arranged between a breaker chamber and a bus chamber and used for shielding a fixed contact inside the switch cabinet, so that an electric shock accident caused by the fact that a worker contacts the fixed contact when the switch cabinet is operated is prevented, and when a breaker is pushed into the switch cabinet, the valve mechanism is opened to enable a moving contact of a handcart of the breaker to contact the fixed contact, so that conductive connection is realized.
The utility model discloses a chinese utility model patent that the bulletin number of authorizing is CN204088990U, the date of authorizing is 2015.01.07 discloses a cubical switchboard valve mechanism, this cubical switchboard valve mechanism includes that valve and symmetry set up the actuating mechanism who is used for promoting the valve and removes in the both sides of valve, be equipped with the connecting hole on the valve, actuating mechanism is including fixing fixed bolster and the valve connecting block on the cabinet body of cubical switchboard, valve connecting block and valve fixed connection, be equipped with first runing rest (being first connecting rod) and second runing rest (being the second connecting rod) between fixed bolster and the valve connecting block, the one end of first runing rest is articulated with the fixed bolster, the other end is articulated with the second runing rest, the one end of second runing rest is articulated with first runing rest, the other end is articulated with the valve connecting block, the one end that first runing rest is close to the fixed bolster still is equipped.
When the valve mechanism of the switch cabinet is used, the circuit breaker handcart enters the switch cabinet, the circuit breaker handcart pushes the pushing shaft, the first rotating support rotates around the fixed support and pushes the second rotating support to move upwards, the second rotating support pushes the valve connecting block to move upwards and drives the valve to move upwards, the valve is in an open state, the valve falls down by means of gravity when the circuit breaker exits, and the valve is in a closed state. But because first rotation support and second rotate the length of support longer, and the propulsion shaft sets up the inboard at first rotation support, the inboard is one side that the cabinet body was kept away from to first rotation support, when the propulsion shaft received the thrust of circuit breaker, thrust can promote first rotation support to produce the skew to the cabinet body side, under the effect of the length of first rotation support, the articulated department of first rotation support and second rotation support can produce great deviation, the contained angle appears between the rotation plane of first rotation support and second rotation support, lead to the jamming phenomenon to appear between first rotation support and the second rotation support, make opening and closing unsmooth of valve mechanism.
Disclosure of Invention
The invention aims to provide a valve mechanism, which aims to solve the problems that in the prior art, when a propelling shaft is pushed by a circuit breaker, a first rotating bracket can deviate towards the side of a cabinet body, and a clamping phenomenon can occur between the first rotating bracket and a second rotating bracket; the invention also provides a switch cabinet using the valve mechanism, and aims to solve the problem that the clamping stagnation phenomenon occurs between the first rotating support and the second rotating support of the valve mechanism of the switch cabinet in the prior art.
In order to solve the technical problems, the technical scheme of the valve mechanism provided by the invention is as follows:
valve mechanism, including being used for setting up the valve that can reciprocate on the baffle of cubical switchboard and the link mechanism who drives the valve and move on the up-and-down direction, link mechanism is including being used for articulating the first connecting rod on the cabinet body and being used for with valve articulated second connecting rod, first connecting rod is articulated with the second connecting rod, the inboard of first connecting rod is equipped with the circuit breaker handcart promotion that supplies the cubical switchboard in order to drive first connecting rod pivoted drive division, link mechanism is equipped with on first connecting rod and/or second connecting rod to be used for with the inner wall sliding support complex supporting part of the cabinet body, the supporting part is close to the articulated department of first connecting rod and second connecting rod and keeps away from the articulated department of drive division and second connecting rod and valve.
The technical scheme has the beneficial effects that: the supporting part is in sliding support fit with the inner wall of the cabinet body, when the circuit breaker handcart pushes the driving part to open the valve, the supporting part is close to the hinged part of the first connecting rod and the second connecting rod and is far away from the hinged part of the driving part and the hinged part of the second connecting rod and the valve, the outward inclination of the first connecting rod and the second connecting rod is avoided, an included angle cannot occur between the rotating planes of the first connecting rod and the second connecting rod, and therefore the clamping stagnation phenomenon between the first connecting rod and the second connecting rod is avoided.
The supporting part is a supporting shaft which is provided with a butt joint end face used for being abutted against the cabinet body. The supporting shaft is simple in structure, the contact area of the abutting end face is large, and bending of the supporting shaft is avoided.
The driving part is a driving shaft, and a sleeve which can rotate around the central line of the driving shaft is sleeved on the driving shaft. The sleeve rotates around the central line of the driving shaft, rolling friction exists between the circuit breaker handcart and the driving shaft, and resistance is small.
The technical scheme of the switch cabinet is as follows:
the switch cabinet comprises a cabinet body and a partition plate arranged in the cabinet body, and further comprises a valve structure arranged in the cabinet body, wherein the valve structure comprises a valve which is arranged on the partition plate of the switch cabinet and can move up and down and a connecting rod mechanism which drives the valve to move in the up-and-down direction, the connecting rod mechanism comprises a first connecting rod which is used for being hinged to the cabinet body and a second connecting rod which is used for being hinged to the valve body, the first connecting rod is hinged to the second connecting rod, a circuit breaker handcart for supplying the switch cabinet is arranged on the inner side of the first connecting rod and pushes a driving portion which drives the first connecting rod to rotate, the connecting rod mechanism is arranged on the first connecting rod and/or the second connecting rod and is used for supporting a matched supporting portion with the inner wall of the cabinet body in a sliding mode, the supporting portion is close to the hinged portion of the first connecting rod and.
The technical scheme has the beneficial effects that: the supporting part is in sliding support fit with the inner wall of the cabinet body, when the circuit breaker handcart pushes the driving part to open the valve, the supporting part is close to the hinged part of the first connecting rod and the second connecting rod and is far away from the hinged part of the driving part and the hinged part of the second connecting rod and the valve, the outward inclination of the first connecting rod and the second connecting rod is avoided, an included angle cannot occur between the rotating planes of the first connecting rod and the second connecting rod, and therefore the clamping stagnation phenomenon between the first connecting rod and the second connecting rod is avoided.
The supporting part is a supporting shaft which is provided with a butt joint end face used for being abutted against the cabinet body. The supporting shaft is simple in structure, the contact area of the abutting end face is large, and bending of the supporting shaft is avoided.
The driving part is a driving shaft, and a sleeve which can rotate around the central line of the driving shaft is sleeved on the driving shaft. The sleeve rotates around the central line of the driving shaft, rolling friction exists between the circuit breaker handcart and the driving shaft, and resistance is small.
The moving direction of the circuit breaker handcart is defined to be the front-back direction, the valve is located in front of the circuit breaker handcart, the circuit breaker handcart is provided with a pushing surface for pushing the driving shaft, and the pushing surface comprises a horizontal part located on the rear side and used for keeping the position of the driving shaft and an inclined part located on the front side and inclined downwards and used for pushing the driving shaft. The inclined part of the pushing surface can push the driving shaft to rise, and the horizontal part can limit the rising distance of the driving shaft, so that the opening height of the valve is limited, and the valve is simple and convenient to use.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment 1 of the switchgear of the present invention;
FIG. 2 is a bottom view of the switchgear of FIG. 1;
fig. 3 is a schematic structural diagram of a fixing seat of embodiment 1 of the switch cabinet of the invention;
fig. 4 is a schematic structural diagram of a shutter adapter of embodiment 1 of the switch cabinet of the present invention;
fig. 5 is a schematic structural view of a guide plate of embodiment 1 of the switchgear of the present invention;
fig. 6 is a state diagram of the switch cabinet of embodiment 1 of the present invention when the shutter is opened.
The respective symbols in the figure: 1. a fixing plate; 2. pushing the plate; 3. a drive shaft; 4. a first link; 5. a support shaft; 6. a second link; 7. an adapter plate; 8. a guide plate; 9. a shutter; 10. connecting holes; 11. a partition plate; 12. positioning a plate; 13. a splint; 14. a side plate; 15. a fixed shaft; 21. an inclined portion; 31. a sleeve; 41. a shaft sleeve; 81. and (4) a guide hole.
Detailed Description
As shown in fig. 1 to 6, an embodiment 1 of the switch cabinet of the present invention includes a cabinet body (not shown), a partition 11 disposed in the cabinet body, a circuit breaker handcart (not shown) disposed in the cabinet body, and a valve mechanism disposed in the cabinet body.
As shown in fig. 1, 2 and 6, the shutter mechanism includes a shutter 9 disposed on a partition 11 and capable of moving up and down, and a link mechanism for driving the shutter 9 to move up and down, the link mechanisms are symmetrically disposed on both sides of the shutter 9, and the link mechanisms on both sides are identical, so that only one link mechanism is shown in the figure. The valve 9 is provided with a connecting hole 10, the partition plate 11 is provided with two connecting holes at intervals in the up-down direction, and the valve 9 has a closing position for simultaneously closing the two connecting holes 10 on the partition plate 11 and an opening position for exposing the connecting holes on the lower side of the partition plate 11 and communicating the connecting holes on the upper side of the partition plate 11 through the connecting holes 10 on the valve.
The link mechanism comprises a first connecting rod 4 hinged on the cabinet body and a second connecting rod 6 hinged with the valve, and the first connecting rod 4 is hinged with the second connecting rod 6 through a hinged shaft. The cabinet body is provided with a fixed seat, the valve 9 is provided with a valve switching seat, the first connecting rod 4 is hinged with the fixed seat, and the second connecting rod 6 is hinged with the valve switching seat.
As shown in fig. 3, the fixing base includes a fixing plate 1 and a fixing shaft 15 vertically disposed on the fixing plate 1, fixing holes are disposed on two sides of the fixing plate 1, and the fixing plate 1 is mounted on the cabinet body through rivets or screws. One end of the first connecting rod 4 close to the fixing plate 1 is provided with a shaft sleeve 41 which is sleeved on the fixing shaft 15, and the first connecting rod 4 is hinged with the fixing shaft 15 through the shaft sleeve 41.
As shown in fig. 1 and 6, the shutter adapter comprises an adapter plate 7 and an adapter shaft arranged on the adapter plate 7, the adapter plate comprises a parallel plate parallel to the shutter 9 and a vertical plate which is integrally formed with the parallel plate and is vertical to the parallel plate, the vertical plate is of a triangular structure, the parallel plate is of a rectangular structure, the parallel plate is fixed on the shutter 9 through a bolt, the adapter shaft is vertically arranged on the vertical plate, a through hole for the adapter shaft to pass through is formed in one end, close to the adapter plate 7, of the second connecting rod 6, and the hinged end of the shutter of the second connecting rod 6 is hinged to the shutter 9 through the adapter shaft and the through hole.
As shown in fig. 1, 2, 4 and 6, a support shaft 5 is provided near the hinge joint of the first link 4 and the second link 6, and both ends of the support shaft 5 pass through the first link 4. One end of the supporting shaft 5 close to the cabinet body is abutted against the inner wall of the cabinet body, and the supporting shaft 5 forms a supporting part which is used for being matched with the inner wall of the cabinet body in a sliding supporting mode. The back shaft 5 sets up in the position that is close to the articulated department of first connecting rod 4 and second connecting rod 6, and back shaft 5 makes first connecting rod 4 and second connecting rod 6 in the rotation plane of pivoted in-process in same plane, avoids appearing the contained angle between the rotation plane of first connecting rod and second connecting rod, has guaranteed the normal work of valve 9.
The end of the first link 4 near the fixed plate 1 is provided with a driving shaft 3 offset from the sleeve 41, the driving shaft 3 is provided with a sleeve 31, and the driving shaft 3 and the sleeve 31 form a driving part for driving the first link 4 to rotate around the fixed shaft 15. The moving direction of the circuit breaker handcart is defined as the front-back direction, the valve is located in front of the circuit breaker handcart, a push plate 2 for pushing a driving shaft 3 is arranged on the circuit breaker handcart, a pushing surface for pushing the driving shaft is formed on the top surface of the push plate 2, a downward inclined part 21 is formed on the front side of the pushing surface, when the sleeve 31 is pushed by the inclined part 21, the sleeve 31 moves along the pushing surface while rotating around the driving shaft 3, the resistance force on the push plate 2 can be reduced, the part of the pushing surface located on the rear side is a horizontal part which is horizontally arranged, the horizontal part is used for keeping the ascending distance of the driving shaft, and therefore the opening height of the valve 9 is limited.
As shown in fig. 1, 2 and 6, the cabinet body is further provided with a side plate 14, the side plate 14 is of an L-shaped structure, the side plate 14 has a vertical side perpendicular to the partition plate 11 and a parallel side parallel to the partition plate 11, an accommodating space for accommodating the shutter 9 is provided between the parallel side of the side plate 14 and the partition plate 11, a clamping plate 13 is provided on the vertical side of the side plate 14, the partition plate 11 and the clamping plate 13 form a slide way for the shutter 9 to move up and down, and the slide way has guiding and limiting effects on the movement of the shutter 9. The clamping plate 13 is provided with a positioning plate 12 for limiting the downward movement stroke of the valve 9, the positioning plate 12 is an L-shaped bent plate, the positioning plate 12 is fixed on the clamping plate 13 through a bolt, and the positioning plate 12 can support the valve 9 to be matched with the valve 9 in a stopping manner to limit the stroke of the valve 9.
As shown in fig. 1, 5 and 6, the upper side of the clamping plate 13 is further provided with a guide plate 8 which is matched with the shutter adapter to guide the movement of the shutter 9, the guide plate 8 is fixed on the clamping plate 13 by a bolt, and the guide plate 8 is provided with a guide hole 81 extending in the vertical direction. The vertical plate of the adapter plate 7 extends into the guide hole 81, and in the moving process of the valve 9, the guide hole 81 guides the valve adapter, and meanwhile, the valve can be prevented from inclining due to uneven stress of the valve adapter.
When the switch cabinet pushes a circuit breaker handcart into a cabinet body, a push plate 2 moves along with the circuit breaker handcart, an inclined part 21 at the front end of the push plate 2 is in contact with a sleeve 31 on the outer side of a driving shaft 3, the sleeve 31 moves along the inclined part 21 and simultaneously drives a first connecting rod 4 to rotate around a fixed shaft 15, the first connecting rod 4 drives a second connecting rod 6 to rotate, the abutting end face of a supporting shaft 5 abuts against the cabinet body to enable the rotating planes of the first connecting rod 4 and the second connecting rod 6 to be in the same plane, the second connecting rod 6 drives a valve 9 to move upwards, in the process of moving the valve 9 upwards, two connecting holes in a partition plate 11 are exposed, when the sleeve 31 is separated from the inclined part 21 and moves to the horizontal part of the push plate 2, the first connecting rod 4 does not rotate, the valve 9 moves to the highest position, at the moment, the valve 9 is in a working position; when the circuit breaker handcart is pulled out of the cabinet body, the valve 9 moves downwards under the action of gravity, when the valve 9 moves to the positioning plate 12, the valve 9 does not move downwards, at the moment, the valve 9 is in a closed position, and the two connecting holes in the partition plate 11 are completely closed.
Embodiment 2 of the switchgear of the present invention is different from embodiment 1 in that: the support shaft is arranged on the first connecting rod at a position close to the second connecting rod in the embodiment 1, in the embodiment, the support shaft can also be arranged on the second connecting rod at a position close to the first connecting rod, and the support shafts can also be respectively arranged on the first connecting rod and the second connecting rod at positions close to the hinged joint.
Example 3 of the switchgear of the present invention is different from example 1 in that: in embodiment 1, the support portion is formed by a support shaft, in this embodiment, the hinge shaft of the first link and the second link has an extension portion extending beyond the side surfaces of the first link and the second link toward the cabinet, the extension portion forms the support portion, and a spring may be disposed outside the first link, the spring pressing against the cabinet, the spring forming the support portion.
Example 4 of the switchgear of the present invention is different from example 1 in that: the driving part is the drive shaft and the sleeve sleeved on the drive shaft in embodiment 1, in this embodiment, a vertical plate extending downwards can be arranged on the inner side of the first connecting rod, the vertical plate is pushed by the circuit breaker handcart to drive the first connecting rod to rotate, and the vertical plate forms the driving part.
The specific structure of the embodiment of the shutter mechanism of the present invention is the same as that of the shutter mechanism in any embodiment of the switch cabinet, and is not described herein again.

Claims (7)

1. Valve mechanism, including being used for setting up the valve that can reciprocate on the baffle of cubical switchboard and the link mechanism who drives the valve and move on the up-and-down direction, link mechanism is including being used for articulating the first connecting rod on the cabinet body and being used for with valve articulated second connecting rod, first connecting rod is articulated with the second connecting rod, and the inboard of first connecting rod is equipped with the circuit breaker handcart promotion that supplies the cubical switchboard and drives first connecting rod pivoted drive division, its characterized in that: the link mechanism is provided with a supporting part which is used for being matched with the inner wall sliding support of the cabinet body on the first connecting rod and/or the second connecting rod, and the supporting part is close to the hinged position of the first connecting rod and the second connecting rod and is far away from the hinged position of the driving part and the second connecting rod and the valve.
2. The shutter mechanism according to claim 1, wherein: the supporting part is a supporting shaft which is provided with a butt joint end face used for being abutted against the cabinet body.
3. A shutter mechanism according to claim 1 or 2, characterized in that: the driving part is a driving shaft, and a sleeve which can rotate around the central line of the driving shaft is sleeved on the driving shaft.
4. Cubical switchboard, including the cabinet body and setting up at the internal baffle of cabinet, still including setting up the valve structure in the cabinet body, the valve structure is including being used for setting up the valve that can reciprocate on the baffle of cubical switchboard and driving the link mechanism of valve up-and-down upward movement, link mechanism is including being used for articulating the first connecting rod on the cabinet body and being used for with valve articulated second connecting rod, first connecting rod is articulated with the second connecting rod, and the inboard of first connecting rod is equipped with the circuit breaker handcart promotion that supplies the cubical switchboard in order to drive first connecting rod pivoted drive division, its characterized in that: the link mechanism is provided with a supporting part which is used for being matched with the inner wall sliding support of the cabinet body on the first connecting rod and/or the second connecting rod, and the supporting part is close to the hinged position of the first connecting rod and the second connecting rod and is far away from the hinged position of the driving part and the second connecting rod and the valve.
5. The switchgear cabinet according to claim 4, wherein: the supporting part is a supporting shaft which is provided with a butt joint end face used for being abutted against the cabinet body.
6. The switchgear cabinet according to claim 4 or 5, characterized in that: the driving part is a driving shaft, and a sleeve which can rotate around the central line of the driving shaft is sleeved on the driving shaft.
7. The switchgear cabinet according to claim 6, characterized in that: the moving direction of the circuit breaker handcart is defined to be the front-back direction, the valve is located in front of the circuit breaker handcart, the circuit breaker handcart is provided with a pushing surface for pushing the driving shaft, and the pushing surface comprises a horizontal part located on the rear side and used for keeping the position of the driving shaft and an inclined part located on the front side and inclined downwards and used for pushing the driving shaft.
CN201811320930.XA 2018-11-07 2018-11-07 Switch cabinet and valve mechanism thereof Active CN109473898B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811320930.XA CN109473898B (en) 2018-11-07 2018-11-07 Switch cabinet and valve mechanism thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811320930.XA CN109473898B (en) 2018-11-07 2018-11-07 Switch cabinet and valve mechanism thereof

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Publication Number Publication Date
CN109473898A CN109473898A (en) 2019-03-15
CN109473898B true CN109473898B (en) 2020-11-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112103832A (en) * 2020-09-18 2020-12-18 伊顿电力设备有限公司 Valve driving mechanism for switch cabinet and switch cabinet with same

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Publication number Priority date Publication date Assignee Title
CN204130977U (en) * 2014-09-19 2015-01-28 浙江上美输配电有限公司 A kind of handcart type high-voltage switch cabinet tool interlocking device
JP5992215B2 (en) * 2012-06-12 2016-09-14 三菱電機株式会社 Drawer type circuit breaker interlock device
CN207800416U (en) * 2018-02-02 2018-08-31 山东亿九电气发展有限公司 A kind of interlock of high voltage load switch and lower earthing switch

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JPH1155818A (en) * 1997-07-28 1999-02-26 Mitsubishi Electric Corp Shutter for closed distribution board
CN2373926Y (en) * 1999-05-14 2000-04-12 上海电器科学研究所 Safety partition board moving device for drawer type circuit breaker
CN101789567B (en) * 2010-03-11 2012-01-18 华仪电气股份有限公司 Valve mechanism of switch cabinet
CN203071473U (en) * 2013-01-22 2013-07-17 锦州华信开关电器有限责任公司 Valve mechanism of switch cabinet
CN205985925U (en) * 2016-07-13 2017-02-22 大唐胶南风力发电有限公司 Valve mechanism of high -voltage switch cabinet
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Publication number Priority date Publication date Assignee Title
JP5992215B2 (en) * 2012-06-12 2016-09-14 三菱電機株式会社 Drawer type circuit breaker interlock device
CN204130977U (en) * 2014-09-19 2015-01-28 浙江上美输配电有限公司 A kind of handcart type high-voltage switch cabinet tool interlocking device
CN207800416U (en) * 2018-02-02 2018-08-31 山东亿九电气发展有限公司 A kind of interlock of high voltage load switch and lower earthing switch

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