A simple transmission structure for delay control of switches

Abstract

The present invention provides a simple transmission structure for delay control of a switch, wherein the switch includes a main break and a secondary break, and the transmission structure includes: a first rotating shaft, which rotates around the shaft under the drive of a driving device; a secondary push wheel and a main push wheel, which are both arranged on the first rotating shaft and rotate together with the first rotating shaft, and the secondary push wheel and the main push wheel respectively drive the secondary break and the main break to close during the rotation of the first rotating shaft. By arranging a secondary push wheel and a main push wheel on the first rotating shaft to rotate together with the first rotating shaft, the secondary push wheel and the main push wheel respectively drive the secondary break and the main break to close during the rotation of the first rotating shaft. Compared with the prior art, the structural arrangement of the secondary push wheel, the main push wheel, and the first rotating shaft makes its assembly method simple, improves assembly efficiency, and reduces production costs.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage electrical equipment, and in particular to a simple transmission structure for delay control of a switch. Background Art

[0002] At present, most of the mechanisms used in switches are single-mechanism control single-break technology, that is, two operating mechanisms are used to control the opening and closing of the vacuum interrupter break and the isolation break respectively, and the operations must be performed in sequence. When closing, the isolation break must be closed first (that is, the isolation mechanism performs the closing operation), and then the vacuum interrupter break (that is, the vacuum interrupter mechanism performs the closing operation); when opening, the vacuum interrupter break must be opened first, and then the isolation break. Since two mechanisms must be operated when opening and closing, the operating procedures are cumbersome, and the operating order of the two mechanisms cannot be reversed, otherwise the equipment will be burned.

[0003] In order to solve the above problems, Chinese patent document CN103515161A discloses a spring operating mechanism, such as Figure 4 As shown, it includes a switch isolation main shaft 01, an isolation crank arm 02 linked to the isolation main shaft 01, a vacuum bubble shaft 03, a vacuum bubble crank arm 04 linked to the vacuum bubble shaft 03, and an output cam 05. The output cam 05 is a sheet-like plate, which is rotatably mounted on the frame and is formed with a V-shaped upper slide groove 051 and a Z-shaped lower slide groove 052. The upper slide groove 051 is a closing priority slide groove that first applies torque to the isolation crank arm 02 and then moves relative to it when closing, and first moves relative to it and applies torque when opening. The lower groove 052 is a closing priority slide groove that first applies torque to the vacuum bubble crank arm 04 and then moves relative to it when opening, and first moves relative to it and applies torque when closing. Although the above scheme realizes the linkage between the vacuum arc chamber fracture and the isolation fracture, during assembly, it is necessary to ensure that the isolation crank arm 02 is tightly fitted with the upper slide groove 051 of the output cam and the isolation main shaft 01, while the vacuum bubble crank arm 04 is tightly fitted with the lower slide groove 052 of the output cam and the vacuum bubble shaft 03, which makes assembly more difficult and increases production costs. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the technical defects of the spring operating mechanism in the prior art that is difficult to assemble and has high production cost, thereby providing a simple transmission structure for delay control of switches that is easy to assemble and produce locally.

[0005] To this end, the present invention provides a simple transmission structure for delay control of a switch, wherein the switch comprises a main break and a secondary break, and the transmission structure comprises:

[0006] A first rotating shaft, driven by the driving device to rotate around the axis;

[0007] The secondary push wheel and the main push wheel are both arranged on the first rotating shaft and rotate along with the first rotating shaft. The secondary push wheel and the main push wheel respectively drive the secondary break and the main break to close during the rotation of the first rotating shaft.

[0008] As a preferred solution, the main push wheel includes a first concentric portion mounted on the first rotating shaft and a first push portion connected to the first concentric portion, and the first push portion drives the main break to close via a first driving structure.

[0009] As a preferred solution, the first driving structure includes a connecting rod, and a first main break elbow arm and a second main break elbow arm respectively arranged at both ends of the connecting rod. The first main break elbow arm is connected to the main break driving shaft for driving the main break to open and close the switch, and is hinged to the connecting rod at one end close to the connecting rod. The second main break elbow arm can be rotatably installed on the rotating shaft, and is hinged to the connecting rod at one end relative to the rotating shaft, and the other end is provided with a first driven wheel that cooperates with the first pushing part to drive.

[0010] As a preferred solution, it also includes an opening spring for driving the first driving structure to perform a reverse opening movement and a limiting structure for limiting the opening movement of the first driving structure to an initial position.

[0011] As a preferred solution, the limiting structure is a baffle plate arranged on one side of the first main fracture elbow arm and cooperating with the first main fracture elbow arm for buffering and limiting.

[0012] As a preferred solution, the secondary push wheel includes a second concentric portion mounted on the first rotating shaft and a second push portion connected to the second concentric portion, and the second push portion drives the secondary break to close via a second driving structure.

[0013] As a preferred solution, the second driving structure includes a secondary break arm, one end of which has a second driven wheel cooperating with the second pushing portion, and the other end is provided with a secondary break drive shaft for driving the secondary break to open and close.

[0014] As a preferred solution, it also includes a reset bias structure acting on the secondary break arm, and the reset bias structure drives the secondary break arm to move in the opening direction after being separated from the action of the second driving structure.

[0015] As a preferred solution, the driving device includes:

[0016] A power crank arm, which is arranged on the first rotating shaft and rotates along with the first rotating shaft, and a third driven wheel is arranged at one end of the power crank arm away from the first rotating shaft;

[0017] A power cam is rotatably mounted on the second rotating shaft, and when it rotates forward to a set position, it collides with the third driven wheel to drive the first rotating shaft to rotate;

[0018] The closing energy storage spring drives the power cam to rotate in the positive direction when releasing energy.

[0019] As a preferred solution, the secondary push wheel and the main push wheel drive the secondary break and the main break to close in sequence at set time intervals during the rotation of the first rotating shaft.

[0020] As a preferred solution, it also includes a gate opening delay spring that cooperates with the main push wheel to achieve gate opening delay.

[0021] The technical solution of the present invention has the following advantages:

[0022] 1. The simple transmission structure of the switch with delayed control of the present invention is provided with a secondary push wheel and a main push wheel rotating together with the first rotating shaft. The secondary push wheel and the main push wheel drive the secondary break and the main break to close respectively during the rotation of the first rotating shaft. Compared with the prior art, the structural arrangement of the secondary push wheel, the main push wheel and the first rotating shaft makes the assembly method simple and greatly reduces the production cost.

[0023] 2. The switch of the present invention has a simple transmission structure with delayed control, wherein the main push wheel includes a first concentric portion installed on the first rotating shaft and a first push portion connected to the first concentric portion, and the secondary push wheel includes a second concentric portion installed on the first rotating shaft and a second push portion connected to the second concentric portion. The main push wheel and the secondary push wheel have the advantage of simple structure.

[0024] 3. The switch of the present invention has a simple transmission structure with delayed control, and the first driving structure includes a connecting rod, and a first main break arm and a second main break arm respectively arranged at both ends of the connecting rod. When closing the switch, the first pushing portion of the main pushing wheel cooperates with the first driven wheel of the second main break arm, and then drives the main break driving shaft to rotate through the connecting rod and the first main break arm in turn to close the main break. The structural setting of the above-mentioned first driving structure is simple.

[0025] 4. The simple transmission structure of the switch with time delay control of the present invention, the second driving structure includes a secondary break arm, one end of the secondary break arm has a second driven wheel matched with the second push part, and the other end is provided with a secondary break drive shaft for driving the secondary break to open and close. When closing the switch, the second push part of the secondary push wheel drives and cooperates with the second driven wheel of the secondary break arm, thereby driving the secondary break drive shaft to rotate, so that the secondary break is closed. The structure of the above-mentioned second driving structure is simple.

[0026] 5. The switch of the present invention uses a simple transmission structure with delayed control. The secondary push wheel and the main push wheel drive the secondary break and the main break to close in sequence at set time intervals during the rotation of the first rotating shaft. That is, when closing the circuit, the secondary break closes before the main break, thereby ensuring that the equipment will not burn out and improving safety performance.

[0027] 6. The simple transmission structure for delay control of the switch of the present invention also includes a switch-off delay spring that cooperates with the main push wheel to achieve switch-off delay. By adjusting the torque of the switch-off delay spring, the switch-off delay time can be adjusted according to design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the prior art or the specific embodiments of the present invention, the following briefly introduces the drawings used in the description of the prior art or the specific embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a structural schematic diagram of the main break and the secondary break of the simple transmission structure of the switch with time delay control in the open state of the present invention.

[0030] Figure 2 This is a structural diagram when the secondary breaker is in the closed state and the main breaker has not yet been closed.

[0031] Figure 3 It is a structural schematic diagram with both the main break and the secondary break in the closed state.

[0032] Figure 4 It is a structural schematic diagram of the spring operating mechanism in the prior art in the closed state after the rear clamping plate is removed.

[0033] Reference numerals: 01, isolation main shaft; 02, isolation crank arm; 03, vacuum bubble shaft; 04, vacuum bubble crank arm; 05, output cam; 051, upper slide groove; 052, lower slide groove;

[0034] 1. First rotating shaft; 2. Secondary push wheel; 21. Second concentric portion; 22. Second push portion; 3. Main push wheel; 31. First concentric portion; 32. First push portion; 4. Connecting rod; 41. First main break crank arm; 42. Second main break crank arm; 43. Main break drive shaft; 44. First driven wheel; 5. Secondary break crank arm; 51. Secondary break drive shaft; 52. Second driven wheel; 6. Power crank arm; 61. Third driven wheel; 7. Power cam; 71. Second rotating shaft. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is described below in conjunction with the drawings of the specification. Obviously, the following embodiments are not all embodiments of the present invention. Based on the embodiments described in the present invention, all other embodiments obtained by ordinary technicians in this field without making other creative work are within the protection scope of the present invention.

[0036] It should be noted that, in the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] like Figure 1-3 A specific implementation of a simple transmission structure for delay control of a switch, the switch includes a main break and a secondary break, the transmission structure includes: a first rotating shaft 1, which rotates around the shaft under the drive of a driving device; a secondary push wheel 2 and a main push wheel 3, both of which are arranged on the first rotating shaft 1 and rotate with the first rotating shaft 1, and the secondary push wheel 2 and the main push wheel 3 drive the secondary break and the main break to close respectively during the rotation of the first rotating shaft 1. Compared with the prior art, the simple transmission structure for delay control of the switch of this embodiment has a structural arrangement of the secondary push wheel 2, the main push wheel 3, and the first rotating shaft 1, which makes its assembly method simple and greatly reduces the production cost.

[0038] The main push wheel 3 includes a first concentric portion 31 mounted on the first rotating shaft 1 and a first push portion 32 connected to the first concentric portion 31. The first push portion 32 drives the main breaker to close through a first driving structure. The main push wheel 3 has the advantage of a simple structure.

[0039] Specifically, the first driving structure includes a connecting rod 4, and a first main break elbow arm 41 and a second main break elbow arm 42 respectively arranged at both ends of the connecting rod 4. The first main break elbow arm 41 is connected to a main break driving shaft 43 for driving the main break to open and close the switch, and is hinged to the connecting rod 4 at one end close to the connecting rod 4. The second main break elbow arm 42 can be rotatably installed on a rotating shaft, and is hinged to the connecting rod 4 at one end relative to the rotating shaft, and the other end is provided with a first driven wheel 44 that cooperates with the first pushing part 32 for driving.

[0040] The simple transmission structure for delay control of the switch also includes a switch spring for driving the first drive structure to reverse the switch movement and a limit structure for limiting the switch movement of the first drive structure to the initial position, wherein the limit structure is a baffle plate arranged on one side of the first main break arm 41 and cooperates with it to buffer and limit. The simple transmission structure for delay control of the switch also includes a switch delay spring for driving in cooperation with the main push wheel 3 to achieve switch delay.

[0041] The secondary push wheel 2 includes a second concentric portion 21 mounted on the first rotating shaft and a second push portion 22 connected to the second concentric portion 21 , and the second push portion 22 drives the secondary break to close via a second driving structure.

[0042] The second driving structure comprises a secondary break arm 5, one end of which is provided with a second driven wheel 52 cooperating with the second pushing portion 22, and the other end of which is provided with a secondary break driving shaft 51 for driving the secondary break to open and close.

[0043] It also includes a reset bias structure acting on the secondary break arm 5, and the reset bias structure drives the secondary break arm 5 to move in the opening direction after being separated from the action of the second driving structure.

[0044] The driving device includes: a power crank arm 6, which is arranged on the first rotating shaft 1 and rotates with the first rotating shaft 1, and a third driven wheel 61 is arranged at the end thereof away from the first rotating shaft 1; a power cam 7, which is rotatably mounted on the second rotating shaft 71, and when it rotates forward to a set position, it collides with the third driven wheel 61 to drive the first rotating shaft 1 to rotate; a closing energy storage spring, which drives the power cam 7 to rotate forward when releasing energy.

[0045] It also includes a switch-off drive device for driving the secondary break to open the switch via the secondary break drive shaft.

[0046] The secondary push wheel 2 and the main push wheel 3 drive the secondary break and the main break to close in sequence at set time intervals during the rotation of the first rotating shaft 1. That is, when closing the circuit, the secondary push wheel 2 first drives the secondary break to close, and then the main push wheel 3 drives the main break to close, with a certain time interval, thereby ensuring that the equipment will not burn out and improving safety performance.

[0047] The idle stroke of the reverse movement of the main push wheel 3 and the opening delay spring work together to form the opening delay. The opening delay time can be adjusted according to the design requirements by adjusting the opening delay spring.

[0048] The working principle of the simple transmission structure for delay control of the switch of the present invention is as follows:

[0049] When closing:

[0050] The closing energy storage spring releases energy, drives the power cam 7 to rotate forward, and makes it collide with the third driven wheel 61 of the power crank arm 6, thereby driving the first rotating shaft 1 to rotate in the opposite direction. The secondary push wheel 2 and the main push wheel 3 also rotate in the opposite direction under the drive of the first rotating shaft 1, and the second push portion 22 of the secondary push wheel 2 contacts the second driven wheel 52 of the secondary break crank arm 5 (as shown in FIG. Figure 1As shown in FIG. 1 , the secondary push wheel 2 overcomes the force of the reset bias structure, driving the secondary break arm 5 and the secondary break drive shaft 51 to rotate in the opposite direction, thereby closing the secondary break. Figure 2 In the closing position shown, the second pushing portion 22 and the second driven wheel 52 are blocked and matched;

[0051] When the secondary break is closed, the main push wheel 3 has not yet contacted the first driven wheel 44 (that is, there is an empty stroke), and the main push wheel 3 continues to rotate. After contacting the first driven wheel 44, it drives the second main break arm 52 to rotate clockwise around the rotation axis, and then drives the main break to close through the connecting rod 4, the first main break arm 41, and the main break drive shaft 43.

[0052] When opening:

[0053] The opening drive device drives the main break to open through the main break drive shaft 43, and the first main break crank arm 41 rotates in the opposite direction around the main break drive shaft 53, and then drives the first push-stroke part 32 to rotate forward through the connecting rod 4, the second main break crank arm 42, and the first driven wheel 44. At the same time, the secondary push-stroke wheel 2 rotates forward following the first rotating shaft 1. When the second push-stroke part 22 does not block and cooperate with the second driven wheel 52, the secondary break crank arm 5 moves in the opening direction under the action of the reset bias structure, thereby driving the secondary break to open through the secondary break drive shaft 51, that is, the main break is closed before the secondary break.

[0054] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, the obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A simple transmission structure for delay control of a switch, the switch comprising a main break and a secondary break, characterized in that: The transmission structure comprises: A first rotating shaft (1) is driven by a driving device to rotate around an axis; The secondary push wheel (2) and the primary push wheel (3) are both arranged on the first rotating shaft (1) and rotate along with the first rotating shaft (1); The main thrust wheel (3) comprises a first concentric portion (31) mounted on the first rotating shaft (1) and a first thrust portion (32) connected to the first concentric portion (31); The secondary thrust wheel (2) comprises a second concentric portion (21) mounted on the first rotating shaft and a second thrust portion (22) connected to the second concentric portion (21); The first push portion (32) rotates with the first rotating shaft (1) and drives the main disconnect port to close via a first driving structure; The second push-stroke portion (22) drives the secondary break to close along with the first rotating shaft (1) and through a second driving structure, the second driving structure comprises a secondary break turning arm (5), one end of the secondary break turning arm (5) is provided with a second driven wheel (52) cooperating with the second push-stroke portion (22), and the other end is provided with a secondary break driving shaft (51) for driving the secondary break to open and close; When closing the circuit breaker, the first rotating shaft (1) is driven to rotate in the opposite direction, and the secondary push wheel (2) and the main push wheel (3) also rotate in the opposite direction under the drive of the first rotating shaft (1). The second push portion (22) of the secondary push wheel (2) contacts the second driven wheel (52) of the secondary break arm (5), driving the secondary break arm (5) and the secondary break drive shaft (51) to rotate in the opposite direction, thereby closing the secondary break. When the secondary break is in the closing position, the second push portion (22) blocks and cooperates with the second driven wheel (52); and when the secondary break is closed, the main push wheel (3) has not yet contacted the first drive structure, and the main push wheel (3) continues to rotate and contacts the first drive structure, driving the main break to close.

2. The simple transmission structure for delay control of a switch according to claim 1 is characterized in that: The first driving structure comprises a connecting rod (4), and a first main break arm (41) and a second main break arm (42) respectively arranged at two ends of the connecting rod (4); the first main break arm (41) is connected to a main break drive shaft (43) for driving the main break to open and close, and is hinged to the connecting rod (4) at one end close to the connecting rod (4); the second main break arm (42) is rotatably mounted on a rotating shaft, and is hinged to the connecting rod (4) at one end relative to the rotating shaft, and is provided with a first driven wheel (44) at the other end for driving in cooperation with the first pusher (32).

3. The simple transmission structure with time delay control for switches according to claim 2 is characterized in that: It also includes an opening spring for driving the first driving structure to move in the reverse opening direction and a limiting structure for limiting the opening movement of the first driving structure to an initial position.

4. The simple transmission structure with time delay control for switches according to claim 3 is characterized in that: The limiting structure is a baffle plate arranged on one side of the first main fracture corner arm (41) and cooperating therewith for buffering and limiting.

5. The simple transmission structure with time-delay control for switches according to any one of claims 1 to 4, characterized in that: It also comprises a reset bias structure acting on the secondary break arm (5), wherein the reset bias structure drives the secondary break arm (5) to move in the opening direction after being released from the action of the second drive structure.

6. The simple transmission structure with time delay control for switches according to claim 1 is characterized in that: The driving device comprises: A power crank arm (6) is arranged on the first rotating shaft (1) and rotates along with the first rotating shaft (1), and a third driven wheel (61) is arranged at one end of the power crank arm away from the first rotating shaft (1); A power cam (7) is rotatably mounted on the second rotating shaft (71), and when it rotates forward to a set position, it collides with the third driven wheel (61) to drive the first rotating shaft (1) to rotate; The closing energy storage spring drives the power cam (7) to rotate in the positive direction when releasing energy.

7. The simple transmission structure with time-delay control for switches according to any one of claims 1 to 4, characterized in that: It also comprises a gate opening delay spring which cooperates with the main push wheel (3) to drive and realize gate opening delay.

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