A high voltage vacuum permanent magnet mechanism circuit breaker trolley

Abstract

The present invention relates to the technical field of vacuum circuit breakers, and in particular to a high-voltage vacuum permanent magnet mechanism circuit breaker trolley. It includes a chassis vehicle that can move forward and backward, and the left and right sides of the chassis vehicle are detachably connected to two mutually parallel side panels through a connecting piece, and the two side panels are connected into one body through a vertically arranged partition; the upper ends of the two side panels are detachably connected to two side support plates through a connecting piece, and three voltage transformers arranged side by side are commonly connected on the two side support plates, and one end of each voltage transformer is detachably connected to one end of the first support plate through a connecting piece, and the other end of the first support plate is detachably connected to one end of the high-voltage fuse through a connecting piece. The present invention has a compact and reasonable structure, is easy to operate, and has stable and reliable opening and closing operations. It has electric and manual opening and closing functions, and can still conveniently and quickly realize opening and closing operations in emergency situations.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum circuit breakers, in particular to a high-voltage vacuum permanent magnet mechanism circuit breaker trolley. Background Art

[0002] Permanent magnetic mechanism vacuum circuit breakers are popular among users due to their small number of parts, simple structure and reliable performance. However, they cannot be closed manually with load, which brings a lot of inconvenience to users. The manual load closing function is particularly important when there is no external power supply or the electric circuit breaker cannot be operated for some reason and emergency operation is required. Summary of the invention

[0003] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a high-voltage vacuum permanent magnet mechanism circuit breaker trolley with a reasonable structure, which has electric and manual opening and closing functions and can still conveniently and quickly realize opening and closing operations in emergency situations.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A high-voltage vacuum permanent magnet mechanism circuit breaker trolley comprises a chassis vehicle capable of moving forward and backward, wherein two parallel side panels are detachably connected to each other on the left and right sides of the chassis vehicle through a connecting piece, and the two side panels are connected into one body through a vertically arranged partition; the upper ends of the two side panels are detachably connected to two side support panels through a connecting piece, and three voltage transformers arranged side by side are commonly connected to the two side support panels, one end of each voltage transformer is detachably connected to one end of a first support panel through a connecting piece, and the other end of the first support panel is detachably connected to one end of a high-voltage fuse through a connecting piece, and the other end of the high-voltage fuse is detachably connected to one end of a second support panel through a connecting piece, and the other end of the second support panel is detachably connected to one end of a second support panel through a connecting piece. The connecting piece is detachably connected to the upper conductive contact arm, the upper conductive contact arm is sleeved with a current transformer, one end of the upper conductive contact arm is detachably connected to the upper mounting plate through the connecting piece, the upper mounting plate is detachably connected to the upper end of the vacuum tube through the connecting piece, the lower end of the vacuum tube is connected to one end of the insulating pull rod, an insulating frame is sleeved on the outer ring of the vacuum tube, the side of the insulating frame is detachably connected to the side of the two side plates through the connecting piece, an upper mounting end face is provided on the upper part of the insulating frame, the upper mounting end face is detachably connected to the upper mounting plate through the connecting piece, a lower mounting end face is provided on the lower part of the insulating frame, the lower mounting end face is detachably connected to the lower mounting plate through the connecting piece, and the front end of the lower mounting plate is detachably connected to the lower conductive contact arm through the connecting piece;

[0006] A rotating shaft is provided between the two side plates, and two ends of the rotating shaft are rotatably connected to the two side plates respectively. A first rotating plate assembly is sleeved on the middle part of the rotating shaft, and one end of the first rotating plate assembly is rotatably connected to the lower end of the insulating pull rod at the middle position through a pin shaft, and the other end of the first rotating plate assembly is rotatably connected to the driving end of the permanent magnet mechanism through a pin shaft. The permanent magnet mechanism body is detachably connected to the mounting beam through a connecting piece, and two ends of the mounting beam are fixedly connected to the inner surfaces of the two side plates respectively; a second rotating plate assembly is sleeved on one side of the rotating shaft, and one end of the second rotating plate assembly is rotatably connected to the lower end of the insulating pull rod at the right position through a pin shaft, and the other end of the second rotating plate assembly is rotatably connected to one end of the manual closing mechanism through a pin shaft; a third rotating plate assembly is sleeved on the other side of the rotating shaft, and one end of the third rotating plate assembly is rotatably connected to the lower end of the insulating pull rod at the left position through a pin shaft.

[0007] Furthermore, two sides of one end of the chassis vehicle are provided with detachable connecting hooks through connecting pieces.

[0008] Furthermore, the first rotating plate assembly is rotatably connected to the lower support plate of the reset spring through a pin shaft, the lower support plate of the reset spring is hung with the lower end of the reset spring, the upper end of the reset spring is hung with a screw rod, and the screw rod is connected to the support of the partition through a thread.

[0009] Furthermore, the manual closing mechanism includes a side mounting plate arranged in parallel on the inner sides of the two side plates, the side mounting plate and one of the side plates are connected as a whole by a connecting piece, an operating handle is rotatably connected between the side mounting plate and the side plate, one end of the first rotating arm is mounted on the shaft portion of the operating handle extending out of the side plate, the other end of the first rotating arm is rotatably connected to one end of the second pull plate through a pin shaft, the other end of the second pull plate is rotatably connected to one end of the fan-shaped transmission plate through a pin shaft, the shaft portion of the operating handle extending out of the side plate is mounted with a torsion spring, one end of the torsion spring is fixed to the side plate, and the other end is clamped on the side face of the first rotating arm, and the middle sleeve of the operating handle can be adjusted with the operating handle The second end of the third pull plate is rotatably connected to the first end of the third pull plate through the pin shaft, and the other end of the third pull plate is rotatably connected to the first end of the triangular transmission plate through the pin shaft. The second end of the triangular transmission plate is fixedly connected to the transmission plate rotating shaft, and the two ends of the transmission plate rotating shaft are respectively fixedly connected to the side mounting plate and the side plate; the third end of the triangular transmission plate is rotatably connected to one end of the first pull plate through the pin shaft, and the other end of the first pull plate is rotatably connected to one end of the half-wheel crank arm through the pin shaft, and the other end of the half-wheel crank arm is sleeved on the pin shaft, and the pin shaft is rotatably connected to the other end of the second rotating plate assembly; the closing camshaft is rotatably connected between the side mounting plate and the side plate, and the closing camshaft is One end of the camshaft extends out of the side plate and is sleeved on a fan-shaped transmission plate that can rotate with the closing camshaft. A six-tooth ratchet is provided between the fan-shaped transmission plate and the side plate. The six-tooth ratchet is sleeved on the closing camshaft and can rotate with the closing camshaft. The fan-shaped transmission plate is rotatably connected to the first ratchet pawl through a pin shaft facing the side plate. The first ratchet pawl contacts the ratchet teeth of the six-tooth ratchet and blocks the six-tooth ratchet from rotating in the ratchet setting direction. The side plate is rotatably connected to the second ratchet pawl through a pin shaft. The second ratchet pawl contacts the ratchet teeth of the six-tooth ratchet and blocks the six-tooth ratchet from rotating in the ratchet setting direction. The first ratchet pawl and the second ratchet pawl are connected in a six-tooth manner. The toothed ratchet wheel is symmetrically arranged at the center, the closing cam is sleeved on the middle part of the closing cam shaft, the closing cam can rotate with the closing cam shaft, the cam end face of the closing cam contacts the outer surface of the other end of the half-wheel crank arm, the closing cam can push the half-wheel crank arm to move through the cam end face, the other end of the closing cam shaft extends out of the side plate and is fixedly connected to one end of the eccentric plate, the other end of the eccentric plate is rotatably connected to the spring lower support through a connecting assembly, the lower ends of several energy storage springs parallel to each other are hung on the spring lower support, the upper ends of several energy storage springs are hung on the spring upper support, and the spring upper support is rotatably connected to the side plate through a connecting assembly.

[0010] Furthermore, one end of the operating handle extends out of the side plate and is clamped with the trigger plate.

[0011] The beneficial effects of the present invention are as follows:

[0012] The invention has a compact and reasonable structure, is easy to operate, has stable and reliable opening and closing operations, has electric and manual opening and closing functions, and can still conveniently and quickly realize opening and closing operations in emergency situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a stereoscopic diagram from the first viewing angle of the present invention.

[0014] Figure 2 This is a stereoscopic diagram from a second viewing angle of the present invention.

[0015] Figure 3 It is the front view of the present invention.

[0016] Figure 4 It is a side view of the present invention.

[0017] Figure 5 The structural diagram of the present invention is shown with one side panel removed.

[0018] Among them: 1. chassis; 2. hook; 3. side plate; 4. rotating shaft; 5. side support plate; 6. voltage transformer; 7. high-voltage fuse; 8. upper conductive contact arm; 9. vacuum tube; 10. lower conductive contact arm; 11. insulation frame; 12. insulating pull rod; 13. permanent magnet mechanism; 14. partition; 15. reset spring; 16. current transformer; 17. first rotating plate assembly; 18. second rotating plate assembly; 19. third rotating plate assembly; 21. operating handle; 22. side mounting plate; 23. trigger plate; 24. first rotating arm; 2 5. Second pull plate; 26. Torsion spring; 27. Fan-shaped transmission plate; 28. Second rotating arm; 29. ​​Third pull plate; 30. Triangular transmission plate; 31. Transmission plate rotating shaft; 32. First pull plate; 33. Half-wheel crank arm; 34. Closing cam shaft; 35. Six-tooth ratchet; 36. First ratchet pawl; 37. Second ratchet pawl; 38. Closing cam; 39. Eccentric plate; 40. Spring lower support; 41. Energy storage spring; 42. Spring upper support; 43. Mounting beam; 44. Reset spring lower support plate; 45. Screw. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

[0020] like Figure 1 and Figure 2 As shown, the present invention mainly includes a chassis 1 that can move forward and backward, and two sides of one end of the chassis 1 are detachably connected with hooks 2 through connecting members, and the entire chassis 1 can be conveniently driven to move through the hooks 2. Two parallel side panels 3 are detachably connected to the left and right sides of the chassis 1 through connecting members, and the two side panels 3 are connected into one body through a vertically arranged partition 14.

[0021] like Figure 1 and Figure 2 As shown, the upper ends of the two side plates 3 are detachably connected to the two side support plates 5 through a connecting piece, and the two side support plates 5 are commonly connected to three voltage transformers 6 arranged side by side.

[0022] like Figure 4and Figure 5 As shown, one end of each voltage transformer 6 is detachably connected to one end of the first support plate through a connector, the other end of the first support plate is detachably connected to one end of the high-voltage fuse 7 through a connector, the other end of the high-voltage fuse 7 is detachably connected to one end of the second support plate through a connector, the other end of the second support plate is detachably connected to the upper conductive contact arm 8 through a connector, and the upper conductive contact arm 8 is sleeved with a current transformer 16. One end of the upper conductive contact arm 8 is detachably connected to the upper mounting plate through a connector, the upper mounting plate is detachably connected to the upper end of the vacuum tube 9 through a connector, and the lower end of the vacuum tube 9 is connected to one end of the insulating pull rod 12. The outer ring of the vacuum tube 9 is sleeved with an insulating frame 11, and the side of the insulating frame 11 is detachably connected to the side of the two side plates 3 through a connector. An upper mounting end face is provided at the upper part of the insulating frame 11, and the upper mounting end face is detachably connected to the upper mounting plate through a connector. A lower mounting end face is provided at the lower part of the insulating frame 11, and the lower mounting end face is detachably connected to the lower mounting plate through a connector, and the front end of the lower mounting plate is detachably connected to the lower conductive contact arm 10 through a connector.

[0023] like Figure 1 and Figure 2 As shown, a rotating shaft 4 is provided between the two side plates 3, and the two ends of the rotating shaft 4 are rotatably connected to the two side plates 3. A first rotating plate assembly 17 is sleeved in the middle of the rotating shaft 4, one end of the first rotating plate assembly 17 is rotatably connected to the lower end of the insulating pull rod 12 at the middle position through a pin, and the other end of the first rotating plate assembly 17 is rotatably connected to the driving end of the permanent magnet mechanism 13 through a pin, and the permanent magnet mechanism 13 body is detachably connected to the mounting crossbeam 43 through a connecting piece, and the two ends of the mounting crossbeam 43 are fixedly connected to the inner surfaces of the two side plates 3 respectively.

[0024] like Figure 5 As shown, the first rotating plate assembly 17 is rotatably connected to the lower support plate 44 of the reset spring through a pin shaft, the lower support plate 44 of the reset spring is connected to the lower end of the reset spring 15, the upper end of the reset spring 15 is connected to the screw 45, and the screw 45 is connected to the support of the partition 14 through a thread. When the permanent magnet mechanism 13 is not working, the reset spring 15 can drive the first rotating plate assembly 17 to reset.

[0025] like Figure 1 and Figure 2 As shown, a second rotating plate assembly 18 is sleeved on one side of the rotating shaft 4, one end of the second rotating plate assembly 18 is rotatably connected to the lower end of the insulating pull rod 12 at the right position through a pin, and the other end of the second rotating plate assembly 18 is rotatably connected to one end of the manual closing mechanism through a pin. The manual closing mechanism can realize the opening and closing operation by driving each insulating pull rod 12 on the rotating shaft 4 through the second rotating plate assembly under manual operation of the staff.

[0026] like Figure 2 and Figure 3As shown, the manual closing mechanism includes a side mounting plate 22 arranged in parallel on the inner sides of the two side plates 3, and the side mounting plate 22 and one of the side plates 3 are connected as a whole through a connecting piece. The side mounting plate 22 and the side plate 3 are rotatably connected to the operating handle 21, one end of the operating handle 21 extends out of the side plate 3 and is clamped to the trigger plate 23, and the trigger plate 23 can conveniently drive the operating handle 21 to rotate.

[0027] like Figure 2 and Figure 3 As shown, the shaft portion of the operating handle 21 extending out of the side plate 3 is fitted with one end of the first rotating arm 24, the other end of the first rotating arm 24 is rotatably connected to one end of the second pull plate 25 through a pin shaft, and the other end of the second pull plate 25 is rotatably connected to one end of the fan-shaped transmission plate 27 through a pin shaft. The shaft portion of the operating handle 21 extending out of the side plate 3 is fitted with a torsion spring 26, one end of the torsion spring 26 is fixed to the side plate 3, and the other end is clamped on the side of the first rotating arm 24.

[0028] like Figure 1 and Figure 5 As shown, the middle part of the operating handle 21 is sleeved with one end of the second rotating arm 28 that can rotate with the operating handle 21, and the other end of the second rotating arm 28 is rotatably connected to one end of the third pull plate 29 through a pin shaft, and the other end of the third pull plate 29 is rotatably connected to the first end of the triangular transmission plate 30 through a pin shaft, and the second end of the triangular transmission plate 30 is fixedly connected to the transmission plate rotating shaft 31, and the two ends of the transmission plate rotating shaft 31 are respectively fixedly connected to the side mounting plate 22 and the side plate 3. The third end of the triangular transmission plate 30 is rotatably connected to one end of the first pull plate 32 through a pin shaft, and the other end of the first pull plate 32 is rotatably connected to one end of the half-wheel crank arm 33 through a pin shaft, and the other end of the half-wheel crank arm 33 is sleeved on the pin shaft, and the pin shaft is rotatably connected to the other end of the second rotating plate assembly.

[0029] like Figures 3 to 5 As shown, the closing cam shaft 34 is rotatably connected between the side mounting plate 22 and the side plate 3, one end of the closing cam shaft 34 extends out of the side plate 3 and is sleeved with the fan-shaped transmission plate 27 that can rotate with the closing cam shaft 34, and a six-tooth ratchet 35 is provided between the fan-shaped transmission plate 27 and the side plate 3, and the six-tooth ratchet 35 is sleeved on the closing cam shaft 34 and can rotate with the closing cam shaft 34. The fan-shaped transmission plate 27 is rotatably connected to the first ratchet pawl 36 through a pin shaft facing the side plate 3, and the first ratchet pawl 36 contacts the ratchet teeth of the six-tooth ratchet 35 and blocks the six-tooth ratchet 35 from rotating in the direction in which the ratchet teeth are set. The second ratchet pawl 37 is rotatably connected to the side plate 3 through a pin shaft, and the second ratchet pawl 37 contacts the ratchet teeth of the six-tooth ratchet 35 and blocks the six-tooth ratchet 35 from rotating in the direction in which the ratchet teeth are set, and the first ratchet pawl 36 and the second ratchet pawl 37 are symmetrically arranged around the center of the six-tooth ratchet 35.

[0030] like Figures 3 to 5As shown, the closing cam 38 is sleeved on the middle part of the closing cam shaft 34, and the closing cam 38 can rotate together with the closing cam shaft 34. The cam end surface of the closing cam 38 contacts the outer surface of the other end of the half-wheel crank arm 33, and the closing cam 38 can push the half-wheel crank arm 33 to move through the cam end surface.

[0031] like Figure 1 As shown, the other end of the closing cam shaft 34 extends out of the side plate 3 and is fixedly connected to one end of the eccentric plate 39. The other end of the eccentric plate 39 is rotatably connected to the spring lower support 40 through a connecting assembly. The lower ends of several energy storage springs 41 parallel to each other are hung on the spring lower support 40. The upper ends of several energy storage springs 41 are hung on the spring upper support 42. The spring upper support 42 is rotatably connected to the side plate 3 through a connecting assembly.

[0032] like Figure 1 and Figure 2 As shown, a third rotating plate assembly 19 is sleeved on the other side of the rotating shaft 4, and one end of the third rotating plate assembly 19 is rotatably connected to the lower end of the insulating pull rod 12 at the left position through a pin.

[0033] The working principle of the present invention is:

[0034] 1. Electric closing (opening) mode: When the capacitor energy storage is completed, a closing (opening) command is sent. When the permanent magnet mechanism controller receives the closing (opening) command, the energy stored in the energy storage capacitor is quickly transferred to the closing (opening) coil of the permanent magnet mechanism, driving the moving iron core of the permanent magnet mechanism 13 to perform the closing (opening) action, thereby pushing the rotating shaft 4 to drive the vacuum tube 9 to complete the closing (opening) operation;

[0035] 2. Manual closing operation: The operating handle 21 has three working positions, namely the emergency stop opening position (the trigger plate 24 is horizontal), the ready position (the trigger plate 24 is vertical) and the energy storage closing position. When the operating handle 21 is in the ready position, turn it counterclockwise by 65°. Then the first rotating arm 24 drives the fan-shaped transmission plate 27 to rotate 65° clockwise synchronously through the second pull plate 25. At the same time, the first ratchet pawl 36 connected to the fan-shaped transmission plate 27 pushes the six-tooth ratchet 35 to rotate 65° clockwise synchronously. At this time, the six-tooth ratchet 35 is clamped by the second ratchet pawl 37 on the side plate 3. At the same time, the eccentric plate 39 rotates with the rotation of the six-tooth ratchet 35, and drives the energy storage spring 41 to store energy. At this time, release the torque applied to the operating handle 21, and the operating handle 21 and the first rotating arm 24 return to the ready position under the action of the torsion spring 26. Repeat the operation three times, and the energy storage spring 41 not only completes the maximum energy storage, but also can release the stored energy instantly (after three operations, the eccentric plate 39 rotates more than 180° and has turned over the "dead point"). The released energy drives the closing cam 38 to rotate rapidly through the eccentric plate 39, pushes the half-wheel crank arm 33 to move rapidly, drives the permanent magnet mechanism 13 to close through the rotating shaft 4, and locks the closing position under the action of strong magnetic force to complete the rapid closing action. Since the operating handle 21 is in the energy storage closing position at this time, it is controlled by the first pull plate 32, the triangular transmission plate 30, the third pull plate 29, the second rotating arm 28 and other components, and the half-wheel crank arm 33 clamps the closing cam 38 with the arc end face of the half wheel, so the closing cam 38 cannot completely return to the initial position, and the energy stored in the energy storage spring 41 cannot be completely released, thereby ensuring the reliability of the closing action. When the torque applied to the operating handle 21 is released, the operating handle 21 returns to the ready position under the action of the torsion spring 26, and the second rotating arm 28, the third pull plate 29, the triangular transmission plate 30, the first pull plate 32, the half-wheel crank arm 33 and other components also move accordingly, and the closing cam 38 returns to the initial position from the plane of the half-wheel crank arm 33, the energy stored in the energy storage spring 41 is completely released and returns to the initial position, and the closing action is completed.

[0036] 3. Manual opening operation: When the circuit breaker is in the closed state, apply torque to rotate the operating handle 21 90° clockwise, and the second rotating arm 28, the third pulling plate 29, the triangular transmission plate 30, the first pulling plate 32, the half-wheel crank arm 33 and other components will also move accordingly. Forcibly pull one end of the second transmission plate assembly on the first rotating shaft 20 upward to overcome the closing force of the permanent magnet mechanism 13, and then complete the rapid opening action under the action of the reset spring 15.

[0037] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A high-voltage vacuum permanent magnet mechanism circuit breaker trolley, comprising a chassis vehicle (1) capable of moving forward and backward, characterized in that: The left and right sides of the chassis vehicle (1) are detachably connected to two mutually parallel side panels (3) through a connecting piece, and the two side panels (3) are connected into one body through a vertically arranged partition (14); the upper ends of the two side panels (3) are detachably connected to two side support panels (5) through a connecting piece, and the two side support panels (5) are commonly connected to three voltage transformers (6) arranged in parallel, one end of each voltage transformer (6) is detachably connected to one end of the first support panel through a connecting piece, and the other end of the first support panel is detachably connected to one end of a high-voltage fuse (7) through a connecting piece, and the other end of the high-voltage fuse (7) is detachably connected to one end of a second support panel through a connecting piece, and the other end of the second support panel is detachably connected to an upper conductive contact arm (8) through a connecting piece, and the upper conductive contact arm (8) is detachably connected to the upper conductive contact arm (8) through a connecting piece. The electric contact arm (8) is sleeved with a current transformer (16); one end of the upper conductive contact arm (8) is detachably connected to an upper mounting plate via a connector; the upper mounting plate is detachably connected to an upper end of a vacuum tube (9) via a connector; the lower end of the vacuum tube (9) is connected to one end of an insulating pull rod (12); an insulating frame (11) is sleeved on the outer ring of the vacuum tube (9); the side of the insulating frame (11) is detachably connected to the side of two side plates (3) via a connector; an upper mounting end face is provided at the upper part of the insulating frame (11); the upper mounting end face is detachably connected to the upper mounting plate via a connector; a lower mounting end face is provided at the lower part of the insulating frame (11); the lower mounting end face is detachably connected to the lower mounting plate via a connector; the front end of the lower mounting plate is detachably connected to a lower conductive contact arm (10) via a connector; A rotating shaft (4) is provided between the two side plates (3), and the two ends of the rotating shaft (4) are rotatably connected to the two side plates (3) respectively. A first rotating plate assembly (17) is sleeved on the middle of the rotating shaft (4), and one end of the first rotating plate assembly (17) is rotatably connected to the lower end of the insulating pull rod (12) at the middle position through a pin shaft, and the other end of the first rotating plate assembly (17) is rotatably connected to the driving end of the permanent magnet mechanism (13) through a pin shaft. The permanent magnet mechanism (13) body is detachably connected to the mounting crossbeam (43) through a connecting piece, and the two ends of the mounting crossbeam (43) are respectively fixedly connected to the inner surfaces of the two side plates (3); a second rotating plate assembly (18) is sleeved on one side of the rotating shaft (4), and one end of the second rotating plate assembly (18) is rotatably connected to the insulating pull rod (12) at the right position through a pin shaft. The lower end of the second rotating plate assembly (18) is rotatably connected to one end of the manual closing mechanism through a pin shaft; a third rotating plate assembly (19) is sleeved on the other side of the rotating shaft (4), and one end of the third rotating plate assembly (19) is rotatably connected to the lower end of the insulating pull rod (12) at the left position through a pin shaft; both sides of one end of the chassis vehicle (1) are respectively connected with detachable connecting hooks (2) through connecting pieces; the first rotating plate assembly (17) is rotatably connected to the lower support plate (44) of the reset spring through a pin shaft, the lower end of the reset spring (15) is hung on the lower support plate (44), the upper end of the reset spring (15) is hung on the screw rod (45), and the screw rod (45) is connected to the support of the partition plate (14) through a thread; the manual closing mechanism includes parallel arrangements on the two side plates (3 ) is provided on the inner side of the side mounting plate (22), the side mounting plate (22) and one of the side plates (3) are connected as a whole through a connecting piece, an operating handle (21) is rotatably connected between the side mounting plate (22) and the side plate (3), one end of the first rotating arm (24) is mounted on the shaft portion of the operating handle (21) extending out of the side plate (3), the other end of the first rotating arm (24) is rotatably connected to one end of the second pulling plate (25) through a pin shaft, the other end of the second pulling plate (25) is rotatably connected to one end of the fan-shaped transmission plate (27) through a pin shaft, the shaft portion of the operating handle (21) extending out of the side plate (3) is mounted with a torsion spring (26), one end of the torsion spring (26) is fixed on the side plate (3), and the other end is clamped on the side of the first rotating arm (24), the middle portion of the operating handle (21) is mounted The second rotating arm (28) is connected to one end of the second rotating arm (28) which can rotate with the operating handle (21); the other end of the second rotating arm (28) is rotatably connected to one end of the third pulling plate (29) through a pin shaft; the other end of the third pulling plate (29) is rotatably connected to the first end of the triangular transmission plate (30) through a pin shaft; the second end of the triangular transmission plate (30) is fixedly connected to the transmission plate rotating shaft (31); the two ends of the transmission plate rotating shaft (31) are respectively fixedly connected to the side mounting plate (22) and the side plate (3); the third end of the triangular transmission plate (30) is rotatably connected to one end of the first pulling plate (32) through a pin shaft; the other end of the first pulling plate (32) is rotatably connected to one end of the half-wheel crank arm (33) through a pin shaft; the other end of the half-wheel crank arm (33) is sleeved on the pin shaft, and the pin shaft is rotatably connected to the other end of the second rotating plate assembly;The side mounting plate (22) and the side plate (3) are rotatably connected to a closing cam shaft (34); one end of the closing cam shaft (34) extends out of the side plate (3) and is sleeved on a fan-shaped transmission plate (27) that can rotate together with the closing cam shaft (34); a six-tooth ratchet (35) is provided between the fan-shaped transmission plate (27) and the side plate (3); the six-tooth ratchet (35) is sleeved on the closing cam shaft (34) and can rotate together with the closing cam shaft (34); the fan-shaped transmission plate (27) The side facing the side plate (3) is rotatably connected to a first ratchet pawl (36) through a pin shaft, the first ratchet pawl (36) contacts the ratchet teeth of the six-tooth ratchet (35) and blocks the six-tooth ratchet (35) from rotating in the direction in which the ratchet teeth are set, and the side plate (3) is rotatably connected to a second ratchet pawl (37) through a pin shaft, the second ratchet pawl (37) contacts the ratchet teeth of the six-tooth ratchet (35) and blocks the six-tooth ratchet (35) from rotating in the direction in which the ratchet teeth are set, and the first ratchet pawl (36) and the second ratchet pawl (37) are rotatably connected to the side plate (3). The claw (37) is symmetrically arranged with respect to the center of the six-tooth ratchet (35). The middle part of the closing cam shaft (34) sleeves the closing cam (38). The closing cam (38) can rotate together with the closing cam shaft (34). The cam end surface of the closing cam (38) contacts the outer surface of the other end of the half-wheel crank arm (33). The closing cam (38) can push the half-wheel crank arm (33) to move through the cam end surface. The other end of the closing cam shaft (34) extends out of the side plate (3) and is fixedly connected One end of the eccentric plate (39) and the other end of the eccentric plate (39) are rotatably connected to the spring lower support (40) through a connecting assembly, the lower ends of a plurality of mutually parallel energy storage springs (41) are hung on the spring lower support (40), the upper ends of the plurality of energy storage springs (41) are hung on the spring upper support (42), and the spring upper support (42) is rotatably connected to the side plate (3) through a connecting assembly; one end of the operating handle (21) extends out of the side plate (3) and is clamped to the trigger plate (23). ;

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