Spring operating mechanism of ring main unit based on vertical transmission connecting rod

Abstract

The application discloses a spring operating mechanism of a ring main unit based on a vertical transmission connecting rod, wherein a spring operating mechanism is arranged above a main crank arm, and a main shaft of the spring operating mechanism is arranged horizontally; one end of the main shaft is connected with the main crank arm through a bent rod transmission mechanism, and the main shaft can drive the main crank arm to rotate through the bent rod transmission mechanism when the main shaft rotates. In the application, the main shaft of the spring operating mechanism is arranged horizontally, and two ends of the main shaft are respectively used for driving different components; one end of the main shaft drives the rotation of the main crank arm through the bent rod transmission mechanism, and the other end of the main shaft interacts with a split spring and oil buffering through a crank arm mechanism; the adjustment of the transmission mechanism, the adjustment of the split spring and the adjustment of the oil buffering are all very convenient, and the whole is arranged in a flattened mode, so that the occupied space is reduced, and the application can be flexibly applied in different environments.

Description

Technical Field

[0001] The invention belongs to the technical field of transmission of a spring operating mechanism of a ring main unit, in particular to a spring operating mechanism of a ring main unit based on a vertical transmission connecting rod. Background Art

[0002] A ring network cabinet is an electrical device in which a high-voltage switchgear is installed in a steel plate metal cabinet or is made into an assembled interval-type ring network power supply unit. Its core part adopts load switches and fuses, and has the advantages of simple structure, small size, low price, and the ability to improve power supply parameters and performance, as well as power supply safety. Due to limited space, in order to achieve the purpose of miniaturization, a spring operating mechanism 30 is generally provided on the cabinet 1. The spring operating mechanism is a splint-type side output torque, the trip spring 29 is located between the two splints of the splint mechanism, and the oil buffer is located between the air box and the splint mechanism. Although the above structure is a planar transmission method, the trip spring and the oil buffer are blocked by other structures, which is very troublesome to adjust. In particular, when adjusting the oil buffer parameters, the mechanism needs to be disassembled, adjusted, and then assembled. This is bound to lead to low work efficiency during installation, commissioning, and subsequent maintenance. In summary, there is an urgent need for a structure that is miniaturized, easy to adjust, and easy to operate. Summary of the Invention

[0003] The present invention aims to overcome the shortcomings of the prior art by providing a spring-operated mechanism for a ring main unit (RMU) based on a vertical transmission link. In this structure, the transmission mechanism of the main crank arm is positioned on one side of the spring-operated mechanism, while the trip spring and oil buffer are positioned on the other side. Driven by the ends of the spring-operated mechanism's output shaft, the mechanism facilitates adjustment of the transmission mechanism, the trip spring, and the oil buffer. Furthermore, the overall flattened design reduces space requirements and allows for flexible application in diverse environments.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] A spring operating mechanism for a ring network cabinet based on a vertical transmission connecting rod includes a cabinet body, and a main crank arm is arranged at the lower end of the cabinet body surface. It is characterized in that: a spring operating mechanism is arranged above the main crank arm, and the main shaft of the spring operating mechanism is arranged horizontally; one side end of the main shaft is connected to the main crank arm through a bent rod transmission mechanism, and when the main shaft rotates, the main crank arm can be driven to rotate through the bent rod transmission mechanism.

[0006] Further: the bending rod transmission mechanism includes a main shaft crank arm, a bending rod and a sliding block. One end of the main shaft crank arm is sleeved on one side end of the main shaft, and the other end of the main shaft crank arm is rotatably provided with a connecting block. The connecting block is connected to the upper end of the bending rod, and the lower end of the bending rod is connected to the sliding block. The sliding block is slidably set in the main crank arm and can drive the main crank arm to rotate when sliding.

[0007] Further: the lower end of the bent rod is connected to the upper end of a connecting rod, and the lower end of the connecting rod is connected to the sliding block.

[0008] Furthermore: the bending rod can be rotated and adjusted in the connecting block, and the connecting rod can be raised and lowered and adjusted in the sliding block.

[0009] Furthermore: the other end of the main shaft is connected to the opening spring arranged on the same side through a crank arm mechanism.

[0010] Furthermore: the crank mechanism can contact or separate with the oil buffer arranged on the same side.

[0011] Further: the crank arm mechanism includes a crank arm, a rotating shaft and a roller, one end of the crank arm is sleeved on the other end of the main shaft, and a rotatable roller is set on the other end of the crank arm. A rotating shaft is set on the crank arm between the other end of the main shaft and the roller, and the rotating shaft is connected to the opening spring.

[0012] Further: the cabinet or the spring operating mechanism is provided with a mounting plate, on which a trip spring and an oil buffer are provided.

[0013] Furthermore, the rotating shaft is connected to a trip spring connecting rod, which passes through the upper end of the mounting plate and is sleeved with the trip spring, and the lower end surface of the trip spring is pressed against the upper end surface of the mounting plate.

[0014] Further: a mounting seat is provided on the mounting plate, the oil buffer is screwed into the mounting seat, and the bottom of the oil buffer is located below the mounting plate and can contact or separate from the roller.

[0015] The technical effects achieved by the present invention are:

[0016] In the present invention, a spring operating mechanism is arranged on the cabinet surface above the main crank arm. The main shaft of the spring operating mechanism is arranged horizontally and its two ends are respectively used to drive different components. A bending rod transmission mechanism is arranged on one side of the spring operating mechanism. One end of the main shaft drives the rotation of the main crank arm through the bending rod transmission mechanism. A trip spring and an oil buffer are arranged on the mounting plate on the other side of the spring operating mechanism. The other end of the main shaft interacts with the trip spring and the oil buffer through the crank arm mechanism. The adjustment of the transmission mechanism, the trip spring and the oil buffer is very convenient, and the overall flat setting reduces the occupied space and can be flexibly applied in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 yes Figure 1 A partial enlarged view of the left viewing direction;

[0019] Figure 3 yes Figure 1A partial enlarged view of the right side;

[0020] Figure 4 yes Figure 2 A magnified stereoscopic image of

[0021] Figure 5 yes Figure 3 A magnified stereoscopic image of

[0022] Figure 6 It is a structural diagram of the prior art. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the scope of protection of the present invention cannot be limited thereto.

[0024] A spring operating mechanism for a ring main unit based on a vertical transmission link, such as Figure 1-5 As shown, it includes a cabinet 1, and a main crank arm 11 is provided at the lower end of the cabinet surface. The innovation of the present invention is that a spring operating mechanism 8 is provided above the main crank arm, and the main shaft 17 of the spring operating mechanism is arranged horizontally; one end of the main shaft ( Figure 1 The left side of the main crank arm is connected to the main crank arm through a bending rod transmission mechanism, and when the main shaft rotates, the main crank arm can be driven to rotate through the bending rod transmission mechanism.

[0025] In this embodiment, the bending rod transmission mechanism includes a main shaft crank arm 18, a bending rod 16 and a sliding block 23. The shaft sleeve at one end of the main shaft crank arm is mounted on one side end of the main shaft. The side walls on both sides of the other end of the main shaft crank arm have openings. The connecting block rotating shafts 22 at both ends of a connecting block 19 are respectively rotatably embedded in the two openings. The connecting block can rotate between the side walls on both sides of the other end of the main shaft crank arm.

[0026] The connecting block is provided with a through-hole. The upper end 21 of the bent rod is inserted into the through-hole and fixed to the connecting block via a nut 20. The lower end of the bent rod is connected to the sliding block. Sliding shafts 13 are provided at both ends of the sliding block. Long chute 12 is provided on the sidewalls on both sides of the main crank arm. The two sliding shafts slide and fit into the long chute on the same side. When the bent rod drives the sliding block up or down, the sliding shaft slides in the long chute and simultaneously drives the main crank arm to rotate. The rotation of the main crank arm rotates the input shaft 9 of the cabinet, completing the transition between different switch states.

[0027] The preferred solution is as follows: the lower end 15 of the bent rod is generally a vertical rod, connected to the upper end of a connecting rod 10 via a screw connection structure 14, which comprises a screw thread that engages an external and internal thread. The lower end of the connecting rod is connected to the sliding block via a nut. The nut at the upper end of the bent rod and the screw connection structure at the lower end enable the bent rod to be rotated and adjusted within the connecting block, thereby adjusting the actual projected length of the bent rod on the cabinet surface and compensating for errors that occur after assembly, ensuring that the rotation of the main shaft is accurately transmitted to the main crank arm. In addition, the connecting rod can also be raised and lowered within the sliding block via the nut, which, in conjunction with the adjustment of the bent rod, further compensates for assembly errors.

[0028] On the other side of the spindle, as Figure 1 On the right side of the figure, the other end 6 of the main shaft is connected to the trip spring 2 provided on the same side through a crank mechanism. The crank mechanism can also contact or separate with the oil buffer 5 provided on the same side. The specific structure is as follows: the crank mechanism includes a crank arm 7, a rotating shaft 27 and a roller 26. The shaft sleeve between one end of the side wall of the crank arm is mounted on the other end of the main shaft. The other end of the side wall of the crank arm is provided with a rotatable roller via an axle 25. The rotating shaft is rotatably provided between the side wall of the crank arm between the other end of the main shaft and the roller, and the rotating shaft is connected to the trip spring.

[0029] A preferred solution is as follows: a mounting plate 3 is provided on the cabinet or spring operating mechanism, on which a trip spring and oil buffer are mounted. A trip spring connecting rod 4 is connected to the rotating shaft. This connecting rod passes through the upper end of the mounting plate and is sleeved with the trip spring. The lower end surface of the trip spring presses against the upper end surface of the mounting plate. An adjusting nut is provided at the upper end of the trip spring connecting rod, and the tension of the trip spring is adjusted by tightening or loosening the adjusting nut. A mounting seat 28 is fixed to the mounting plate next to the trip spring connecting rod by bolts. This mounting seat has an internal thread, and the outer surface of the oil buffer has an external thread. The oil buffer is installed together by screwing the internal and external threads together. The screwing of the internal and external threads allows the oil buffer to rotate and adjust its height. The bottom 24 of the oil buffer, located below the mounting plate, can contact or separate with the roller.

[0030] The use process obtained by the present invention is:

[0031] The main shaft of the spring operating mechanism rotates, and one end of the main shaft drives the main shaft crank arm to rotate. The main shaft crank arm drives the main crank arm to rotate through the connecting block, bent rod, screw structure, connecting rod and sliding block. The main crank arm drives the input shaft of the cabinet to rotate to complete the conversion of the switch state.

[0032] At the same time, the other end of the main shaft drives the crank arm to rotate, and the crank arm drives the opening spring to move through the opening spring pull rod, and the roller contacts or separates from the bottom of the oil buffer.

[0033] In the present invention, a spring operating mechanism is arranged on the cabinet surface above the main crank arm. The main shaft of the spring operating mechanism is arranged horizontally and its two ends are respectively used to drive different components. A bending rod transmission mechanism is arranged on one side of the spring operating mechanism. One end of the main shaft drives the rotation of the main crank arm through the bending rod transmission mechanism. A trip spring and an oil buffer are arranged on the mounting plate on the other side of the spring operating mechanism. The other end of the main shaft interacts with the trip spring and the oil buffer through the crank arm mechanism. The adjustment of the transmission mechanism, the trip spring and the oil buffer is very convenient, and the overall flat setting reduces the occupied space and can be flexibly applied in different environments.

Claims

1. A spring operating mechanism for a ring main unit based on a vertical transmission connecting rod, comprising a cabinet body, a main crank arm provided at the lower end of the cabinet body surface, and characterized in that: A spring operating mechanism is provided above the main crank arm, a bent rod transmission mechanism is provided on one side of the spring operating mechanism, and a brake opening spring and an oil buffer are provided on the mounting plate on the other side of the spring operating mechanism; The main shaft of the spring operating mechanism is arranged horizontally, and one end of the main shaft is connected to the main crank arm through a bending rod transmission mechanism. The other end of the main shaft interacts with the opening spring and oil buffer through the crank arm mechanism. When the main shaft rotates, the main crank arm can be driven to rotate through the bending rod transmission mechanism.

2. The spring operating mechanism of a ring main unit based on a vertical transmission connecting rod according to claim 1 is characterized in that: The bending rod transmission mechanism includes a main shaft crank arm, a bending rod and a sliding block. One end of the main shaft crank arm is sleeved on one side end of the main shaft, and a connecting block is rotatably set at the other end of the main shaft crank arm. The connecting block is connected to the upper end of the bending rod, and the lower end of the bending rod is connected to the sliding block. The sliding block is slidably set in the main crank arm and can drive the main crank arm to rotate when sliding.

3. The spring operating mechanism of a ring main unit based on a vertical transmission connecting rod according to claim 2, characterized in that: The lower end of the bent rod is connected to the upper end of a connecting rod, and the lower end of the connecting rod is connected to the sliding block.

4. The spring operating mechanism of a ring main unit based on a vertical transmission connecting rod according to claim 3 is characterized in that: The bent rod can be rotated and adjusted in the connecting block, and the connecting rod can be raised and lowered and adjusted in the sliding block.

5. A spring operating mechanism for a ring main unit based on a vertical transmission connecting rod according to claim 1, 2, 3 or 4, characterized in that: The other end of the main shaft is connected to the opening spring arranged on the same side through a crank arm mechanism.

6. The spring operating mechanism of a ring main unit based on a vertical transmission connecting rod according to claim 5, characterized in that: The crank mechanism can be in contact with or separated from the oil buffer arranged on the same side.

7. The spring operating mechanism of a ring main unit based on a vertical transmission connecting rod according to claim 6, characterized in that: The crank arm mechanism includes a crank arm, a rotating shaft and a roller. One end of the crank arm is sleeved on the other end of the main shaft. A rotatable roller is provided on the other end of the crank arm. A rotating shaft is provided on the crank arm between the other end of the main shaft and the roller. The rotating shaft is connected to the opening spring.

8. The spring operating mechanism of a ring main unit based on a vertical transmission connecting rod according to claim 7, characterized in that: The cabinet or the spring operating mechanism is provided with a mounting plate, and a trip spring and an oil buffer are provided on the mounting plate.

9. The spring operating mechanism of a ring main unit based on a vertical transmission connecting rod according to claim 8, characterized in that: The rotating shaft is connected to a trip spring connecting rod, which passes through the upper end of the mounting plate and sleeves the trip spring. The lower end surface of the trip spring presses against the upper end surface of the mounting plate.

10. A spring operating mechanism for a ring main unit based on a vertical transmission link according to claim 8 or 9, characterized in that: A mounting seat is provided on the mounting plate, and the oil buffer is screwed into the mounting seat. The bottom of the oil buffer is located below the mounting plate and can contact or separate from the roller.

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