Valve structure of high-voltage switch cabinet
Technical Field
The utility model relates to a high tension switchgear technical field specifically is a high tension switchgear's valve structure.
Background
With the continuous development of society and the continuous progress of science, a switch cabinet is electrical equipment, the outside line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, each branch circuit is arranged according to the requirement, such as an instrument, an automatic control, a motor magnetic switch, various alternating current contactors and the like, a high-voltage chamber and a low-voltage chamber switch cabinet are further arranged, a high-voltage bus is arranged, such as a power plant and the like, a low-frequency load reduction for protecting main equipment is further arranged, a breaker is one of important parts in the switch cabinet, and the closing of the switch cabinet breaker needs to be carried out through a valve structure.
At present, current partial valve opening mechanism makes and carries out the transmission through wire rope, but wire rope has certain elasticity, can influence the synchronism that the valve opened and closed, serious can influence the life of valve, and because the valve is opened or the effectual contact of strap electric conductor in the valve can not with the earth conductor when closing the state, cause the valve not really ground connection, increased the potential safety hazard of valve structure, consequently need a high tension switchgear's valve structure to solve above-mentioned problem urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high tension switchgear's valve structure to solve the current partial valve structure synchronism that proposes among the above-mentioned background art not high, and the not enough problem of current partial valve structure security.
In order to achieve the above object, the utility model provides a following technical scheme: a valve structure of a high-voltage switch cabinet comprises an upper valve, a first gear, a handcart breaker push plate, a transmission bin and a switch cabinet main body, wherein the left side and the right side of the upper valve are both connected with limit sliders, the limit sliders are inserted into limit sliding grooves, one sides of the limit sliders, far away from the upper valve, are both connected with first connecting rods, one sides of the first connecting rods, close to the limit sliding grooves, are fixed with second racks, the bottom ends of the first connecting rods are connected with discharge rods, the left sides of the second racks are meshed with the first gear, the back of the first gear is fixed on the inner wall of the transmission bin, the left sides of the first gears are meshed with third racks, the left sides of the third racks are connected with a lower valve, the back of the lower valve is abutted with contact blocks, the bottom ends of the left side and the right side of the lower valve are connected with first connecting blocks, the right sides of the first connecting blocks are connected with a first, the right side of first pivot is connected with the second connecting rod through the bearing frame, the bottom of second connecting rod articulates there is the third connecting rod, and the top of third connecting rod articulates there is the receiving rod, the bottom left side fixedly connected with third gear of third connecting rod, and the top meshing of third gear has the second gear, the top meshing of second gear has first rack, the top of first rack is fixed with handcart circuit breaker push pedal, and handcart circuit breaker push pedal inserts the inside of establishing at the second slider, the left side of second gear is fixed with first fixed block, and the inner wall at the cubical switchboard main part is fixed to first fixed block.
Preferably, the surface diameter of the limiting sliding block is the same as the inner diameter of the limiting sliding groove, and the limiting sliding block and the limiting sliding groove can form a sliding type structure.
Preferably, the size of the gap between the surface blocks of the first gear is the same as the size of the gap between the surface blocks of the second gear.
Preferably, a convex block is fixed on the back of the lower valve, a groove is formed in the front of the contact block, the shape and size of the convex block on the back of the lower valve are the same as those of the groove in the front of the contact block, the lower valve is inserted into the contact block, and the lower valve and the contact block form a sliding structure.
Preferably, the right side surface shape size of handcart circuit breaker push pedal is the same with the inside shape size of second slider, handcart circuit breaker push pedal and second slider constitute slidingtype structure.
Preferably, the size of the gap between the surface blocks of the first rack is the same as the size of the gap between the surface blocks of the second gear.
Compared with the prior art, the beneficial effects of the utility model are that: the valve structure of the high-voltage switch cabinet can increase the synchronism of the device by arranging the first gear, the second rack and the third rack, and the device can enable the lower valve, the upper valve and the ground to form a loop by arranging the discharge rod and the second rack, so that the safety of the device is increased.
(1) The device is provided with the first gear, the second rack and the third rack, when a handcart breaker push plate is pushed in, the first rack at the bottom end of the handcart breaker push plate can be abutted against the second gear, thereby driving the second gear to rotate, driving the third gear to rotate through the rotation of the second gear, then driving the third connecting rod to rotate downwards through the third gear, and then pulling the second connecting rod downwards through the bearing rod, the second connecting rod can pull the first connecting block to move downwards through the first rotating shaft, the lower valve can be driven to move downwards through the downward movement of the first connecting block, when the lower valve moves downwards, the third racks on the two sides of the lower valve drive the first gear to rotate, and then the first gear drives the second rack to ascend, therefore, the upper valve and the lower valve can be opened synchronously, and the working stability of the device is improved.
(2) The device is through being provided with discharge rod and second rack, when taking handcart circuit breaker push pedal out, rotation through the third gear, can drive the second connecting rod upwards promote first connecting block, rethread second rack is with last valve drop-down afterwards, make spacing slider slide down along spacing spout, and simultaneously, lower valve also can pass through the meshing upward movement of third rack and first gear, make lower valve and last valve coincide, after last valve and lower valve are closed, the head rod can downstream, make the discharge rod contact switch inside of cubical switchboard main part that is located the head rod bottom, make upper valve and lower valve and ground constitute the return circuit, increase the device's security.
Drawings
FIG. 1 is a schematic sectional view of the front view of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
fig. 3 is a schematic structural right sectional view of the second connecting rod and the third connecting rod of the present invention;
FIG. 4 is a schematic top sectional view of the structure of the lower shutter and the contact block of the present invention;
fig. 5 is an installation diagram of the present invention.
In the figure: 1. an upper valve; 2. a limiting slide block; 3. a limiting chute; 4. a first connecting rod; 5. a first gear; 6. a discharge rod; 7. a lower valve; 8. a handcart breaker push plate; 9. a first connection block; 10. a first rotating shaft; 11. a second connecting rod; 12. a bearing rod; 13. a third connecting rod; 14. a first rack; 15. a second gear; 16. a first fixed block; 17. a second slider; 18. a transmission bin; 19. a second rack; 20. a third rack; 21. a switch cabinet main body; 22. a contact block; 23. a third gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides an embodiment: the utility model provides a high tension switchgear's valve structure, including last valve 1, first gear 5, handcart circuit breaker push pedal 8, transmission bin 18 and cubical switchboard main part 21, the left and right sides of going up valve 1 all is connected with limit slide 2, limit slide 2's surface diameter size is the same with limit slide 3's inside diameter size, and limit slide 2 and limit slide 3 can constitute the slidingtype structure, enable to go up valve 1 and slide from top to bottom along limit slide 3 through constituting the slidingtype structure, and limit slide 2 inserts the inside of establishing at limit slide 3.
One side of the limiting slide block 2, which is far away from the upper valve 1, is connected with a first connecting rod 4, one side of the first connecting rod 4, which is close to the limiting sliding groove 3, is fixed with a second rack 19, and the bottom end of the first connecting rod 4 is connected with a discharging rod 6.
The left side of the second rack 19 is engaged with the first gear 5, the size of the gap between the surface tooth blocks of the first gear 5 is the same as that of the gap between the surface tooth blocks of the second rack 19, the same gap between the tooth blocks can reduce transmission loss, the back of the first gear 5 is fixed on the inner wall of the transmission bin 18, and the left side of the first gear 5 is engaged with the third rack 20.
The left side of the third rack 20 is connected with a lower valve 7, the back of the lower valve 7 is abutted with a contact block 22, a convex block is fixed on the back of the lower valve 7, a groove is formed in the front of the contact block 22, the shape and size of the convex block on the back of the lower valve 7 are the same as those of the groove on the front of the contact block 22, the lower valve 7 is inserted into the contact block 22, the lower valve 7 and the contact block 22 form a sliding structure, and the lower valve 7 can slide up and down by forming the sliding structure.
Lower valve 7's the left and right sides bottom is connected with first connecting block 9, and first connecting block 9's right side is connected with first pivot 10 through the bearing frame, and the right side of first pivot 10 is connected with second connecting rod 11 through the bearing frame, and the bottom of second connecting rod 11 articulates there is third connecting rod 13, and the top of third connecting rod 13 articulates there is adapting rod 12, and the bottom left side fixedly connected with third gear 23 of third connecting rod 13, and the top meshing of third gear 23 has second gear 15.
The top meshing of second gear 15 has first rack 14, the surface tooth piece gap size of first rack 14 is the same with the surface tooth piece gap size of second gear 15, the same tooth piece gap size can reduce the transmission loss of first rack 14 and second gear 15, the top of first rack 14 is fixed with handcart circuit breaker push pedal 8, the right side surface shape size of handcart circuit breaker push pedal 8 is the same with the inside shape size of second slider 17, handcart circuit breaker push pedal 8 and second slider 17 constitute the slidingtype structure, through constituting the slidingtype structure, can conveniently take handcart circuit breaker push pedal 8 out, and handcart circuit breaker push pedal 8 inserts the inside of establishing at second slider 17, the left side of second gear 15 is fixed with first fixed block 16, and first fixed block 16 fixes the inner wall at cubical switchboard main part 21.
The working principle is as follows: when the handcart breaker push plate is used, firstly, the handcart breaker push plate 8 is manually held, the handcart breaker push plate 8 is drawn out from the interior of the switch cabinet main body 21, through the outward sliding of the handcart breaker push plate 8, the first rack 14 at the bottom end of the handcart breaker push plate 8 is meshed with the second gear 15, so that the second gear 15 is driven to rotate, the third gear 23 is driven to rotate through the rotation of the second gear 15, because the diameter of the third gear 23 is larger than that of the second gear 15, the third gear 23 can slowly rotate, then the third connecting rod 13 is driven to rotate upwards through the rotation of the third gear 23, then the second connecting rod 11 is pushed to move upwards through the bearing rod 12 connected with the third connecting rod 13, so that the second connecting rod 11 can pull the first connecting block 9 to move upwards through the first rotating shaft 10, and the lower valve 7 can be driven to move upwards through the upward movement of the first connecting block 9, when the lower valve 7 moves upwards, the third racks 20 on two sides of the lower valve 7 drive the first gear 5 to rotate, and because the second rack 19 is meshed with the first gear 5, the second rack 19 can be driven by the first gear 5 to drive the first connecting rod 4 to descend, the upper valve 1 can be driven to descend by the descending of the first connecting rod 4, the upper valve 1 and the lower valve 7 are closed to cover the contact block 22, after the upper valve 1 and the lower valve 7 are closed, the first connecting rod 4 can be located at the lowest end, meanwhile, the discharge rod 6 at the bottom end of the first connecting rod 4 can be in contact with the grounding switch inside the switch cabinet main body 21, and therefore the upper valve 1 and the lower valve 7 form a loop with the ground, and the safety of the device is improved.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.