Self-guiding transmission mechanism of conducting rod of vacuum arc-extinguishing chamber

Abstract

The utility model discloses a self-guiding transmission mechanism of a conducting rod of a vacuum arc-extinguishing chamber, which comprises the vacuum arc-extinguishing chamber, a connecting bracket is arranged at the bottom of the vacuum arc-extinguishing chamber, a guiding assembly is arranged at the bottom of the connecting bracket, and a guiding rod is arranged at the bottom of the guiding assembly. The guide rod penetrates through the guide assembly and is connected with the interior of the vacuum arc-extinguishing chamber, a kidney-shaped hole is formed in the surface of the guide rod, a crank arm is arranged below the surface of the outer wall of the guide assembly in a matched mode, and one end of the crank arm penetrates through the guide assembly and moves in the kidney-shaped hole. The spring seat and the compression spring are combined, so that self-guiding of the contact is realized and proper axial pressure is kept on the premise that a guide groove and a guide pin are not needed, a transmission structure is simplified, self-guiding of the conducting rod is realized, and tangential stress is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum interrupter chambers, in particular to a self-guided transmission mechanism for a conductive rod of a vacuum interrupter chamber. Background Art

[0002] The vacuum interrupter, also known as the vacuum switch tube, is the core component of medium and high voltage power switches. Its main function is to quickly extinguish the arc and suppress the current after the medium and high voltage circuit is cut off from the power supply through the excellent insulation of the vacuum inside the tube, so as to avoid accidents and unexpected events.

[0003] At present, the transmission mechanism design of the conductive rod of the vacuum interrupter is relatively complex, with more parts and components and increased use and maintenance costs. Summary of the invention

[0004] The utility model aims to provide a self-guided transmission mechanism for a conductive rod of a vacuum interrupter, so as to solve the problem mentioned in the background technology that the transmission mechanism for the conductive rod of a vacuum interrupter is currently complex in design, has many parts and components, and increases the cost of use and maintenance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-guided transmission mechanism for a conductive rod of a vacuum arc chamber, comprising a vacuum arc chamber, a connecting bracket is provided at the bottom of the vacuum arc chamber, a guide assembly is provided at the bottom of the connecting bracket, a guide rod is provided at the bottom of the guide assembly, and the guide rod passes through the guide assembly to be connected to the inside of the vacuum arc chamber, a waist hole is provided on the surface of the guide rod, a crank arm is provided below the outer wall surface of the guide assembly, and one end of the crank arm passes through the guide assembly and moves in the waist hole.

[0006] Preferably, the guide assembly includes a first spring seat, a second spring seat and a compression spring, the first spring seat and the second spring seat are symmetrically arranged, the top and bottom of the compression spring are respectively abutted against the surfaces of the first spring seat and the second spring seat, and the compression spring is sleeved on the outer wall surface of the guide rod.

[0007] Preferably, the two ends of the crank arm surface are respectively fixedly connected with a first latch and a second latch, and the second latch passes through the second spring seat and is movably connected to the waist hole.

[0008] Beneficial Effects

[0009] Compared with the existing technology, the beneficial effects of the utility model are:

[0010] The present invention adopts a combination of a spring seat and a compression spring to achieve self-guiding of the contact and maintain appropriate axial pressure without the need for a guide groove and a guide pin, thereby simplifying the transmission structure and achieving self-guiding of the conductive rod to avoid tangential force. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model in the disconnected state;

[0012] Figure 2 It is a schematic diagram of the closed state structure of the utility model;

[0013] Figure 3 It is a transmission schematic diagram of the utility model.

[0014] 1. Vacuum interrupter; 2. Connecting bracket; 3. Guide assembly; 4. Turning arm; 5. Guide rod; 6. Waist hole;

[0015] 31. First spring seat; 32. Second spring seat; 33. Compression spring; 41. First latch;

[0016] 42. Second latch; DETAILED DESCRIPTION

[0017] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore are not to be construed as limiting the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and are not to be construed as indicating or implying relative importance.

[0019] like Figure 1-3 It is a structural schematic diagram of a self-guided transmission mechanism of a conductive rod of a vacuum arc chamber in a preferred embodiment of the utility model. In this embodiment, a self-guided transmission mechanism of a conductive rod of a vacuum arc chamber comprises a vacuum arc chamber 1, a connecting bracket 2 is provided at the bottom of the vacuum arc chamber 1, and the connecting bracket 2 is fixed between the conductive rod and the guide rod, a guiding assembly 3 is provided at the bottom of the connecting bracket 2, a guiding rod 5 is provided at the bottom of the guiding assembly 3, and the guiding rod 5 passes through the guiding assembly 3 and is connected to the moving contact conductive rod inside the vacuum arc chamber 1, a waist hole 6 is provided on the surface of the guide rod 5, a crank arm 4 is provided below the outer wall surface of the guiding assembly 3, and one end of the crank arm 4 passes through the guiding assembly 3 and moves in the waist hole 6.

[0020] In this embodiment, the guide assembly 3 includes a first spring seat 31, a second spring seat 32 and a compression spring 33. The first spring seat 31 and the second spring seat 32 are symmetrically arranged. The top and bottom of the compression spring 33 are respectively abutted against the surfaces of the first spring seat 31 and the second spring seat 32. The compression spring 33 is sleeved on the outer wall surface of the guide rod 5.

[0021] In this embodiment, a first latch 41 and a second latch 42 are fixedly connected to both ends of the surface of the crank arm 4 , respectively. The second latch 42 passes through the second spring seat 32 and is movably connected to the waist hole 6 .

[0022] How it works

[0023] like Figure 1 As shown, the lower end moving contact conductive rod in the vacuum interrupter is connected to the guide rod 5 through a nut, the first spring seat 31 is fixed to the bottom of the connecting bracket 2, and the connecting bracket 2 is fixed between the conductive rod and the guide rod, the crank arm 4 is fixed by the first pin 41, the compression spring 33 and the second spring seat 32 are sleeved on the guide rod 5, and the guide rod 5, the crank arm 4 and the second spring seat 32 are connected by the second pin 42.

[0024] like Figure 1 As shown, there is a certain gap between the waist hole 6 and the second latch pin 42 , and there is also a certain gap between the outer circle of the guide rod 5 and the inner hole of the second spring seat 32 .

[0025] like Figure 3 As shown, during the closing process, the crank arm 3 rotates the second latch 42 with the first latch 41 as the center from the opening position to the closing position, and its movement trajectory is an arc with the first latch 41 as the center. When the crank arm 4 moves to be perpendicular to the guide rod 5, the offset between the second latch 42 and the axis of the guide rod 5 is the largest.

[0026] like Figure 1 and 3 As shown, during the contact disconnection process, the second pin 42 drives the guide rod 5 to move downward. When it reaches the disconnection position, the first pin 41 is tangent to the waist hole 6, and the center of the first pin 41 coincides with the axis of the guide rod 5. By adjusting the disconnection position, the axis of the guide rod 5 is consistent with the axis of the vacuum interrupter 1, ensuring that the contact is not offset or twisted.

[0027] like Figure 1 and 3 As shown, during the contact closing process, the second latch 42 drives the second spring seat 32 to move upward. When it reaches the closed position, the second spring seat 32 applies appropriate pressure to the first spring seat 31 through the compression spring 33. At this time, the center of the first latch 41 coincides with the axis of the vacuum interrupter 1 to ensure that the contact is not deviated or twisted.

[0028] like Figure 3As shown, during the movement of the conductive rod of the movable contact, the axial displacement of the second pin 42 is absorbed by the gap between the second pin 42 and the waist hole 6, and will not cause the guide rod 5 to be offset; the displacement of the second spring seat 32 driven by the second pin 42 is absorbed by the gap between the inner hole of the second spring seat 32 and the guide rod 5, and will not cause the guide rod 5 to be offset.

[0029] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A self-guided transmission mechanism for a conductive rod of a vacuum interrupter, comprising a vacuum interrupter (1), characterized in that: The bottom of the vacuum arc extinguishing chamber (1) is provided with a connecting bracket (2), the bottom of the connecting bracket (2) is provided with a guiding assembly (3), the bottom of the guiding assembly (3) is provided with a guiding rod (5), and the guiding rod (5) passes through the guiding assembly (3) and is connected to the inside of the vacuum arc extinguishing chamber (1), a waist hole (6) is opened on the surface of the guiding rod (5), and a crank arm (4) is provided below the outer wall surface of the guiding assembly (3), and one end of the crank arm (4) passes through the guiding assembly (3) and moves in the waist hole (6).

2. According to claim 1, a self-guided transmission mechanism for a conductive rod of a vacuum interrupter, characterized in that: The guide assembly (3) comprises a first spring seat (31), a second spring seat (32) and a compression spring (33); the first spring seat (31) and the second spring seat (32) are symmetrically arranged; the top and bottom of the compression spring (33) are respectively abutted against the surface of the first spring seat (31) and the second spring seat (32); and the compression spring (33) is sleeved on the outer wall surface of the guide rod (5).

3. The self-guided transmission mechanism of the conductive rod of the vacuum interrupter according to claim 1, characterized in that: A first latch (41) and a second latch (42) are respectively fixedly connected at both ends of the surface of the crank arm (4), and the second latch (42) passes through the second spring seat (32) and is movably connected to the waist hole (6).

Images