Arc chamber three-phase transmission device

Abstract

The utility model discloses a kind of arc-extinguishing chamber three-phase transmission devices, including main connecting rod assembly, main elbow, phase transmission shaft, support frame, phase elbow, mechanism support, phase connecting rod assembly, main elbow connects phase transmission shaft, phase transmission shaft is set on mechanism support by support frame, phase elbow has three phases, three-phase phase elbow is installed on transmission shaft, phase connecting rod assembly is connected on phase elbow;Main connecting rod assembly connects main elbow, drives transmission shaft to rotate, and then through phase elbow drives phase connecting rod assembly to carry out reciprocating motion.The utility model compares to three-phase electrical linkage, three-phase mechanical linkage can exclude the hidden danger of non-full-phase operation, with higher closing and opening synchronism and reliability;The utility model simple structure, fewer intermediate links, small motion quality, required operation power is small, operation is safe and reliable, with very high mechanical life, it is convenient to install and overhaul maintenance, reflects the concept of humanization design.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage switchgear technology, and in particular to a three-phase transmission device for an arc-extinguishing chamber. Background Technology

[0002] Currently, most 252kV GIS products on the market use three-phase independent operating mechanisms. The three-phase arc-extinguishing chamber linkage operation is achieved through electrical linkage. The disadvantage of three-phase electrical linkage is that it cannot provide better synchronicity for opening and closing, and it also poses the risk of incomplete operation of the arc-extinguishing chamber, which is particularly important in transformer protection circuits. Therefore, the market urgently needs a product to solve these problems, and the three-phase mechanical linkage arc-extinguishing chamber structure has emerged. Currently, three-phase mechanical linkage products are gradually gaining recognition and favor from users. In some regions, traditional three-phase electrically linked GIS systems have even lost their eligibility for bidding, making the development of three-phase mechanical linkage products imperative.

[0003] The existing three-phase mechanical linkage transmission devices for arc extinguishing chambers on the market have complex structures, many intermediate links, large moving mass, low output efficiency, large required operating power, and relatively low operational stability and reliability. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a three-phase transmission device for an arc-extinguishing chamber, so as to simplify the structure and improve the operational stability and reliability.

[0005] To address the aforementioned technical problems, this utility model provides a three-phase transmission device for an arc-extinguishing chamber, comprising a main connecting rod assembly, a main crank arm, an interphase transmission shaft, a support frame, a phase-separating crank arm, a mechanism support, and a phase-separating connecting rod assembly. The main crank arm connects to the interphase transmission shaft, which is mounted on the mechanism support via a support frame. The phase-separating crank arm has three phases and is mounted on the transmission shaft. A phase-separating connecting rod assembly is connected to the phase-separating crank arm. The main connecting rod assembly connects to the main crank arm, drives the transmission shaft to rotate, and then drives the phase-separating connecting rod assembly to reciprocate through the phase-separating crank arm.

[0006] Furthermore, the lengths of the main connecting rod assembly and the branch connecting rod assembly are adjustable.

[0007] Furthermore, both the main connecting rod assembly and the branch connecting rod assembly consist of universal joints, conventional joints, and connecting rods. The universal joints have right-hand external threads, the conventional joints have left-hand external threads, and the connecting rods have right-hand and left-hand internal threads at both ends. The universal joints and conventional joints are screwed onto the connecting rods at their respective ends.

[0008] Furthermore, both the universal joint and the conventional joint are locked onto the connecting rod by locking nuts.

[0009] Furthermore, the support frame consists of a bracket, bearings, and a pressure plate. The bracket is mounted on the mechanism support, the bearings are fixed to the brackets by the pressure plate, and the interphase transmission shafts pass through the bearings for fixation.

[0010] Furthermore, the main crank arm is connected to the middle of the interphase drive shaft.

[0011] Furthermore, the three-phase split-phase crank arms are installed at equal intervals on the drive shaft.

[0012] The beneficial effects of this utility model are as follows: Compared with three-phase electrical linkage, three-phase mechanical linkage can eliminate the hidden dangers of non-full-phase operation and has higher synchronization and reliability of opening and closing; this utility model has a simple structure, fewer intermediate links, smaller moving mass, less operating power required, safe and reliable operation, a long mechanical life, and is easy to install, inspect and maintain, reflecting the concept of humanized design. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the arc-extinguishing chamber three-phase transmission device according to an embodiment of this utility model.

[0014] Figure 2 This is a side view of the three-phase transmission device of the arc-extinguishing chamber according to an embodiment of the present utility model.

[0015] Figure 3 This is a three-dimensional structural view of the arc-extinguishing chamber three-phase transmission device according to another embodiment of this utility model.

[0016] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0017] Figure 5 This is a cross-sectional view of the support frame according to an embodiment of the present utility model.

[0018] Figure 6 This is a three-dimensional structural diagram of the main connecting rod assembly according to an embodiment of the present utility model.

[0019] Figure 7 This is a cross-sectional schematic diagram of the main connecting rod assembly and the branch connecting rod assembly according to an embodiment of the present utility model.

[0020] Explanation of icon numbers 10. Main connecting rod assembly; 11. Universal joint; 12. Conventional joint; 13. Connecting rod; 14. Locking nut; 20. Main crank arm; 30. Phase drive shaft; 40. Support frame; 41. Bracket; 42. Bearing; 43. Pressure plate; 50. Phase split crank arm; 60. Mechanism bracket; 70. Phase split connecting rod assembly. Detailed Implementation

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] In this embodiment of the invention, directional indicators (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0024] Please refer to Figures 1 to 7 The arc-extinguishing chamber three-phase transmission device of this utility model embodiment includes a main connecting rod assembly, a main crank arm, an interphase transmission shaft, a support frame, a phase-separating crank arm, a mechanism support, and a phase-separating connecting rod assembly.

[0025] The main crank arm is connected to the phase-to-phase drive shaft, which is supported on the mechanism bracket. The phase-to-phase crank arm has three phases and is mounted on the drive shaft. The phase-to-phase crank arm is connected to the phase-to-phase connecting rod assembly. The main connecting rod assembly is connected to the main crank arm and drives the drive shaft to rotate, which in turn drives the phase-to-phase connecting rod assembly to reciprocate through the phase-to-phase crank arm.

[0026] During operation, the operating mechanism drives the main crank arm via the main connecting rod assembly. The main crank arm is connected to the interphase transmission shaft, which is fixed to the mechanism support via a support frame. Under the constraint of the interphase transmission shaft, the main crank arm drives the transmission shaft to rotate around its axis. Three-phase split crank arms are installed on the transmission shaft and rotate simultaneously with the rotation of the transmission shaft. The split crank arms are connected to a split connecting rod assembly, which reciprocates under the drive of the split crank arms, thereby driving the arc-extinguishing chamber to perform opening and closing operations.

[0027] In one implementation, the lengths of the main connecting rod assembly and the branch connecting rod assembly are adjustable, and the connecting rod assembly length L can be steplessly adjusted by rotating the connecting rod. The main connecting rod assembly and the branch connecting rod assembly have similar structures, both consisting of a universal joint, a conventional joint, and a connecting rod. The universal joint has a right-hand external thread, the conventional joint has a left-hand external thread, and both ends of the connecting rod have right-hand and left-hand internal threads. The universal joint and the conventional joint are screwed onto the ends of the connecting rod respectively. Both the universal joint and the conventional joint are locked onto the connecting rod by lock nuts. The conventional joint of the main connecting rod assembly can be connected to the operating mechanism side, and the universal joint can be connected to the main crank arm side.

[0028] like Figure 7 As shown, when the connecting rod is rotated, the universal joint and the conventional joint will extend and retract along the axial direction of the connecting rod under the restriction of right-hand and left-hand threads, thereby realizing stepless adjustment of the connecting rod assembly length L. This adjustment function can precisely adjust the connecting rod length L, thereby precisely adjusting the position of the arc-extinguishing chamber contact to compensate for manufacturing and assembly errors. At the same time, it can accurately debug the ideal arc-extinguishing chamber operating characteristics and extremely high three-phase synchronicity, ensuring the stable and reliable operating performance of the arc-extinguishing chamber.

[0029] In one implementation, the support frame consists of a bracket, bearings, and pressure plates, with the bracket mounted on the mechanism support. There are two pressure plates, and the bearings are fixed to the bracket via the pressure plates on the left and right sides. The interphase drive shafts pass through the bearings for fixation, allowing the interphase drive shafts to rotate around their axis under the constraint of the bearings, thereby achieving the transmission function.

[0030] In one implementation, the main crank arm connects to the middle of the interphase drive shaft. The three-phase split crank arms are installed at equal intervals on the drive shaft. This makes the force distribution on each part of the interphase drive shaft more uniform, reduces the likelihood of deformation, and increases transmission efficiency.

[0031] Compared to previous mechanical linkage devices, this utility model's three-phase transmission device has fewer intermediate links, lighter moving mass, requires less operating power, is safe and reliable in operation, and is easy to install, inspect, and maintain, embodying a human-centered design philosophy. Compared to electrical linkage, this utility model's mechanical linkage eliminates the hidden dangers of incomplete phase operation and has higher synchronization and reliability in opening and closing.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-phase transmission device for an arc-extinguishing chamber, characterized in that, It includes a main connecting rod assembly, a main crank arm, an interphase drive shaft, a support frame, a phase-separated crank arm, a mechanism bracket, and a phase-separated connecting rod assembly. The main crank arm is connected to the interphase drive shaft, which is mounted on the mechanism bracket via a support frame. The phase-separated crank arm has three phases and is mounted on the drive shaft. The phase-separated crank arm is connected to the phase-separated connecting rod assembly. The main connecting rod assembly is connected to the main crank arm and drives the drive shaft to rotate, which in turn drives the phase-separated connecting rod assembly to reciprocate through the phase-separated crank arm.

2. The three-phase transmission device for the arc-extinguishing chamber as described in claim 1, characterized in that, The lengths of the main connecting rod assembly and the branch connecting rod assembly are adjustable.

3. The three-phase transmission device for the arc-extinguishing chamber as described in claim 2, characterized in that, Both the main connecting rod assembly and the branch connecting rod assembly consist of universal joints, conventional joints, and connecting rods. The universal joints have right-hand external threads, the conventional joints have left-hand external threads, and the connecting rods have right-hand and left-hand internal threads at both ends. The universal joints and conventional joints are screwed onto the connecting rods at their respective ends.

4. The three-phase transmission device for the arc-extinguishing chamber as described in claim 3, characterized in that, Both universal joints and standard joints are locked onto the connecting rod using lock nuts.

5. The three-phase transmission device for the arc-extinguishing chamber as described in claim 1, characterized in that, The support frame consists of a bracket, bearings, and a pressure plate. The bracket is mounted on the mechanism support, and the bearings are fixed to the brackets by the pressure plate. The interphase transmission shafts pass through the bearings for fixation.

6. The three-phase transmission device for the arc-extinguishing chamber as described in claim 1, characterized in that, The main crank arm connects to the middle of the phase drive shaft.

7. The three-phase transmission device for the arc-extinguishing chamber as described in claim 1, characterized in that, The three-phase split-phase crank arms are installed at equal intervals on the drive shaft.

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