Quick-opening valve mechanism

Abstract

The utility model relates to a quick-opening valve mechanism. The technical problem to be solved by the utility model is to provide the quick-opening valve mechanism. According to the technical scheme, the quick-opening valve mechanism comprises a locking device. The locking device comprises a locking main plate, a locking plate assembly, a tension spring support, a lower crank arm, an upper crank arm, a torsion spring and a tension spring, the lower crank arm is connected with the locking main plate in a swinging mode through a first connecting column assembly, the upper crank arm is connected with the tension spring support in a swinging mode through a second connecting column assembly, and the locking plate assembly comprises a locking plate. One end of the torsion spring is connected with the lower crank arm, the other end of the torsion spring is connected with the locking main plate, one end of the tension spring is hung on the upper crank arm, and the other end of the tension spring is hung on the tension spring support. The quick-opening valve mechanism has the advantages that the upper crank arm and the lower crank arm of the locking device are separately arranged and swing through the torsion spring and the tension spring respectively, swing force is larger, response is more sensitive, the door opening and closing speed is higher, and action efficiency is higher.

Description

Technical Field

[0001] The utility model relates to a quick-opening valve mechanism. Background Art

[0002] The valve mechanism is a component of draw-out type AC metal-enclosed switchgear and control equipment, and has two convertible positions. In the open position, it allows the moving contact of the draw-out part to engage with the live static contact; in the closed position, it becomes part of the partition and covers the static contact. The valve mechanism includes a locking device. The disadvantages of the traditional locking device in actual use are as follows: only a torsion spring is used for transmission between the upper crank arm, the lower crank arm and the connecting shaft. The rotation resistance of the torsion spring is large, resulting in a slow opening and closing speed of the valve mechanism, low action efficiency and poor action reliability. Therefore, improvements and optimizations are made in this regard. Summary of the Utility Model

[0003] To solve the above problems, the technical problem to be solved by the utility model is to provide a quick-opening valve mechanism.

[0004] The technical solution adopted by the quick-opening valve mechanism of the utility model: includes a locking device, which is characterized in that the locking device includes a locking main board, a lock plate assembly and a spring support fixed on the locking main board, a lower crank arm swingably connected to the locking main board through a first connecting column assembly, an upper crank arm swingably connected to the spring support through a second connecting column assembly, a torsion spring sleeved on the first connecting column assembly, and a tension spring. The lock plate assembly includes a lock plate. One end of the torsion spring is connected to the lower crank arm, and the other end is connected to the locking main board. One end of the tension spring is hooked on the upper crank arm, and the other end is hooked on the spring support. Both the upper crank arm and the lower crank arm include a crank arm driving part and a crank arm swinging part. One end of the crank arm driving part is provided with a first tension spring hanging hole for hanging the tension spring. The crank arm swinging part is provided with a crank arm connecting hole for docking with the first connecting column assembly or the second connecting column assembly and a crank arm lock block corresponding to the lock plate;

[0005] The locking main board includes a main board body, the front end of the main board body is bent to form a main board front docking part, and the main board front docking part is provided with a torsion spring foot limiting port for connecting the torsion spring. The spring support includes a support frame body fixed on the main board body. The front end of the support frame body is bent to form a support docking part placed between the lower crank arm and the upper crank arm. The support docking part is provided with a support docking hole for docking with the second connecting column assembly. The rear end of the support frame body is bent to form a support hanging part, and the support hanging part is provided with a second tension spring hanging hole for hanging the tension spring.

[0006] The lock plate assembly further includes a driving plate, a lock plate bracket fixedly connected to the front docking portion of the main board, a first screw, and a second screw. The middle of the driving plate is connected to the lock plate bracket through the first screw. One end of the driving plate is swingably connected to the lock plate through the second screw. A driving plate kidney-shaped hole for limiting the movement of the second screw is provided at the end of the driving plate.

[0007] The lock plate assembly further includes a second tension spring. A driving plate hanging hole is provided at the end of the driving plate, and a lock plate bracket hanging hole is provided on the lock plate bracket. One end of the second tension spring is hung in the driving plate hanging hole and the other end is hung in the lock plate bracket hanging hole.

[0008] The lock plate is successively provided with a first lock plate guiding portion, a second lock plate guiding portion, and a lock plate limiting head. A first bracket guiding opening corresponding to the first lock plate guiding portion and a second bracket guiding opening corresponding to the second lock plate guiding portion are provided on the lock plate bracket.

[0009] At the rear end of the main board body, a main board limiting portion is successively bent and formed, which is arranged parallel to the main board body and docks with the crank arm driving portion. A main board limiting kidney-shaped hole is provided on the main board limiting portion, and a crank arm swing limiting hole docked with the main board limiting kidney-shaped hole is provided on the crank arm driving portion.

[0010] The number of both the first tension spring hanging hole and the second tension spring hanging hole is 2.

[0011] The advantages of the quick-opening valve mechanism of the present invention are as follows: The upper crank arm and the lower crank arm of the locking device are separately arranged and swing through a torsion spring and a tension spring respectively, with a greater swinging force, more sensitive response, faster door opening and closing speed, higher action efficiency, and the overall structure still remains compact, with accurate positioning and stable and reliable action. Description of the Drawings

[0012] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0013] Figure 1 is a schematic structural diagram of the quick-opening valve mechanism of the present invention;

[0014] Figure 2 is a schematic structural diagram of the locking device of the present invention;

[0015] Figure 3 is a schematic structural diagram of the lock plate assembly of the present invention;

[0016] Figure 4 is a schematic structural diagram of the lower crank arm of the present invention;

[0017] Figure 5 is a schematic structural diagram of the locking main board of the present invention;

[0018] Figure 6 is a schematic structural view of the tension spring bracket of the present utility model;

[0019] Figure 7 is a schematic structural view of the driving plate of the present utility model;

[0020] Figure 8 is a schematic structural view of the lock plate of the present utility model;

[0021] Figure 9 is a schematic structural view of the lock plate bracket of the present utility model. Detailed implementation manners

[0022] As Figures 1-9 shown, the quick-opening valve mechanism related to the present utility model includes a locking device 1. The locking device 1 includes a locking main board 3, a lock plate assembly 4 and a tension spring bracket 7 fixed on the locking main board 3, a lower crank arm 6 swingably connected to the locking main board 3 through a first connecting column assembly 5, an upper crank arm 9 swingably connected to the tension spring bracket 7 through a second connecting column assembly 8, a torsion spring 10 sleeved on the first connecting column assembly 5, and a tension spring 11. The lock plate assembly 4 includes a lock plate 12. One end of the torsion spring 10 is connected to the lower crank arm 6, and the other end is connected to the locking main board 3. One end of the tension spring 11 is hooked on the upper crank arm 9, and the other end is hooked on the tension spring bracket 7. Both the upper crank arm 9 and the lower crank arm 6 include a crank arm driving part 13 and a crank arm swinging part 14. One end of the crank arm driving part 13 is provided with a first tension spring hanging hole 15 for hanging the tension spring 11. The crank arm swinging part 14 is provided with a crank arm connecting hole 16 for docking with the first connecting column assembly 5 or the second connecting column assembly 8 and a crank arm lock block 17 corresponding to the lock plate 12. The locking main board 3 includes a main board body 19. The front end of the main board body 19 is bent to form a main board front docking part 20. The main board front docking part 20 is provided with a torsion spring foot limiting port 21 for connecting the torsion spring 10. The tension spring bracket 7 includes a bracket frame body 23 fixed on the main board body 19. The front end of the bracket frame body 23 is bent to form a bracket docking part 24 placed between the lower crank arm 6 and the upper crank arm 9. The bracket docking part 24 is provided with a bracket docking hole 25 for docking with the second connecting column assembly 8. The rear end of the bracket frame body 23 is bent to form a bracket hanging part 26. The bracket hanging part 26 is provided with a second tension spring hanging hole 27 for hanging the tension spring 11. In the locking device of the traditional valve mechanism, the upper crank arm and the lower crank arm are installed on the same column body and swing through a torsion spring. In the existing locking device 1, the upper crank arm 9 and the lower crank arm 6 are separately arranged and swing through a torsion spring and a tension spring respectively, with a greater swinging force, more sensitive response, faster door opening and closing speed, higher action efficiency, and the overall structure still remains compact.

[0023] The lock plate assembly 4 further includes a driving plate 31, a lock plate bracket 32 fixedly connected to the front docking portion 20 of the main board, a first screw 33, and a second screw 34. The middle of the driving plate 31 is connected to the lock plate bracket 32 through the first screw 33. One end of the driving plate 31 is swingably connected to the lock plate 12 through the second screw 34. A driving plate kidney-shaped hole 37 for limiting the movement of the second screw 34 is provided at the end of the driving plate 31. By pushing the driving plate 31, the lock plate 12 can move back and forth to lock and unlock the upper swing arm 9 and the lower swing arm 6.

[0024] The lock plate assembly 4 further includes a second tension spring 35. A driving plate hanging hole 38 is provided at the end of the driving plate 31, and a lock plate bracket hanging hole 39 is provided on the lock plate bracket 32. One end of the second tension spring 35 is hung in the driving plate hanging hole 38 and the other end is hung in the lock plate bracket hanging hole 39. The second tension spring 35 can achieve rapid return, with a faster response speed and higher action efficiency.

[0025] The lock plate 12 is successively provided with a lock plate first guiding portion 40, a lock plate second guiding portion 41, and a lock plate limiting head 42. A bracket first guiding port 44 corresponding to the lock plate first guiding portion 40 and a bracket second guiding port 45 corresponding to the lock plate second guiding portion 41 are provided on the lock plate bracket 32, with accurate positioning to ensure the stable reliability of the action.

[0026] The rear end of the main board body 19 is successively bent to form a main board limiting portion 48 that is parallel to the main board body 19 and docks with the swing arm driving portion 13. A main board limiting kidney-shaped hole 49 is provided on the main board limiting portion 48, and a swing arm swing limiting hole 50 that docks with the main board limiting kidney-shaped hole 49 is provided on the swing arm driving portion 13, so that the swinging of the upper swing arm 9 and the lower swing arm 6 is effectively controlled, enabling the action to swing along a predetermined route and with more accurate swinging.

[0027] The number of the first tension spring hanging holes 15 and the second tension spring hanging holes 27 is 2 each, which can be flexibly adjusted according to needs to make the action more stable and reliable.

[0028] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention are all included in the protection scope of the present invention.

Claims

1. A quick-opening valve mechanism, comprising a locking device (1), characterized in that: The locking device (1) comprises a locking main board (3), a locking plate assembly (4) and a tension spring bracket (7) fixed to the locking main board (3), a lower crank arm (6) swingably connected to the locking main board (3) via a first connecting column assembly (5), an upper crank arm (9) swingably connected to the tension spring bracket (7) via a second connecting column assembly (8), a torsion spring (10) sleeved on the first connecting column assembly (5), and a tension spring (11), the locking plate assembly (4) comprises a locking plate (12), one end of the torsion spring (10) is connected to the lower crank arm (6), and the other end of the torsion spring (10) is connected to the locking main board (3), and the tension spring (11) is connected to the locking main board (3). One end of the spring (11) is hung on the upper crank arm (9), and the other end is hung on the tension spring bracket (7); the upper crank arm (9) and the lower crank arm (6) both comprise a crank arm driving part (13) and a crank arm swinging part (14); one end of the crank arm driving part (13) is provided with a first tension spring hanging hole (15) for hanging the tension spring (11); the crank arm swinging part (14) is provided with a crank arm connecting hole (16) for docking with the first connecting column assembly (5) or the second connecting column assembly (8) and a crank arm locking block (17) corresponding to the locking plate (12); The locking main board (3) comprises a main board body (19), the front end of the main board body (19) is bent to form a main board front docking portion (20), the main board front docking portion (20) is provided with a torsion spring foot limit opening (21) for connecting the torsion spring (10), the tension spring bracket (7) comprises a bracket frame (23) fixed to the main board body (19), the front end of the bracket frame (23) is bent to form a bracket docking portion (24) disposed between the lower crank arm (6) and the upper crank arm (9), the bracket docking portion (24) is provided with a bracket docking hole (25) docking with the second connecting column assembly (8), the rear end of the bracket frame (23) is bent to form a bracket hanging portion (26), the bracket hanging portion (26) is provided with a tension spring second hanging hole (27) for hanging the tension spring (11).

2. The quick-opening valve mechanism according to claim 1, characterized in that: The lock plate assembly (4) further comprises a driving plate (31), a lock plate bracket (32) fixedly connected to the front docking portion (20) of the main board, a first screw (33) and a second screw (34); the middle portion of the driving plate (31) is connected to the lock plate bracket (32) via the first screw (33); one end of the driving plate (31) is swingably connected to the lock plate (12) via the second screw (34); and a driving plate waist-shaped hole (37) for limiting the movement of the second screw (34) is provided at the end of the driving plate (31).

3. The quick-opening valve mechanism according to claim 2, characterized in that: The locking plate assembly (4) further comprises a second tension spring (35), the end of the driving plate (31) is provided with a driving plate hanging hole (38), the locking plate bracket (32) is provided with a locking plate bracket hanging hole (39), one end of the second tension spring (35) is hung in the driving plate hanging hole (38) and the other end thereof is hung in the locking plate bracket hanging hole (39).

4. The quick-opening valve mechanism according to claim 2, characterized in that: The lock plate (12) is provided with a first lock plate guide portion (40), a second lock plate guide portion (41) and a lock plate limit head (42) in sequence, and the lock plate bracket (32) is provided with a first bracket guide opening (44) corresponding to the first lock plate guide portion (40) and a second bracket guide opening (45) corresponding to the second lock plate guide portion (41).

5. The quick-opening valve mechanism according to claim 1, characterized in that: The rear end of the main board body (19) is bent in sequence to form a main board limiting portion (48) arranged in parallel with the main board body (19) and connected to the crank arm driving portion (13); the main board limiting portion (48) is provided with a main board limiting waist-shaped hole (49); the crank arm driving portion (13) is provided with a crank arm swing limiting hole (50) connected to the main board limiting waist-shaped hole (49).

6. The quick-opening valve mechanism according to claim 1, characterized in that: The number of the first tension spring hanging hole (15) and the number of the second tension spring hanging hole (27) are both 2.

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