Conductive loop mechanism of isolation handcart for electrical cabinet
By directly connecting the upper and lower outlets of the vacuum circuit breaker through the conductive circuit mechanism of the isolated hand car, the problem of increasing costs during the transformation of the isolated hand car is solved, and the effect of reducing component costs and increasing sales profits is achieved. At the same time, the stability of the conduction connection is ensured through the deformation section.
Patent Information
- Application Number
- CN202421838469.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-31
AI Technical Summary
When the existing isolating handcarts are transformed into isolated handcarts, there is a problem of increased costs, especially because the unnecessary upper bracket and soft connection are retained, resulting in increased overall costs and small current carrying margin.
In the conductive circuit mechanism of the isolated handcart, the upper and lower outlets of the vacuum circuit breaker are directly connected through the conductive row, and the use of the upper bracket and positioning members is cancelled, and the component cost is reduced. At the same time, adjustment strip holes and deformation sections are opened on the upper and lower sides of the conductive row to ensure the stability and flexibility of the conduction connection.
It has achieved the reduction of the cost of isolating handcart components, increased sales profits, and offset the impact during the on-off process through deformation sections, maintain a stable connection between the conductive strip and the outgoing line, and avoid the conductive strip being squeezed or pulled and broken.
Smart Images
Figure CN222927998U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of isolating trolley, and particularly to a conductive loop mechanism for an isolating trolley used in an electrical cabinet. Background Art
[0002] An isolating trolley is a manually operated motor-driven mechanism generally used for power distribution equipment, high-voltage power tapping, isolation, and maintenance. It plays a very important role in the isolation and maintenance of electrical systems, mainly by separating electrical components and isolating the equipment from the power supply system for repair or maintenance. By manually operating the isolating trolley switch, the electrical components can be separated from the power supply system to ensure the safety of staff and equipment.
[0003] The main structure of the isolating trolley includes a conductive loop mechanism. As shown in the attached Figure 1 description, it has an insulating cylinder. An upper outgoing line and a lower outgoing line are sequentially assembled on the upper and lower sides of the insulating cylinder. The outer ends of the upper outgoing line and the lower outgoing line are both connected with outgoing line arms and moving contacts (the outgoing line arms and moving contacts are not shown in this figure). And the circuit is conducted inside the insulating cylinder where the upper outgoing line and the lower outgoing line are located. As shown in the figure, the conducting mechanism is provided with an upper bracket connected and conducted with the upper outgoing line inside the insulating cylinder. An aluminum rod is suspended on the upper bracket, and the bottom end of the aluminum rod is connected and conducted with the lower outgoing line through a flexible connection. This kind of conduction method is improved on the basis of a vacuum circuit breaker. Replacing the aluminum rod with a vacuum interrupter and hanging it on the upper bracket can form a vacuum circuit breaker. Replacing the vacuum interrupter with an aluminum rod and without changing the upper bracket and the flexible connection can form an isolating trolley, which can reduce the design difficulty of the isolating trolley.
[0004] Currently, when directly replacing the vacuum interrupter with an aluminum rod to form an isolating trolley, the upper and lower outgoing lines only need to achieve conduction. If the original upper bracket, flexible connection, and the positioning mechanism of the lower part of the aluminum rod in the insulating cylinder are still retained, it will lead to an unnecessary increase in the cost of the isolating trolley (about 600 - 700 yuan per isolating trolley). Therefore, for enterprises to batch convert vacuum circuit breakers into isolating trolleys, the overall cost will increase significantly, reducing the sales profit of the isolating trolley. And there are also problems with the lower flexible connection, such as a small lap joint surface and a small current-carrying margin. Summary of the Invention
[0005] Aiming at the above existing problems, this application aims to provide a conductive loop mechanism for an isolating trolley used in an electrical cabinet, directly connecting and conducting the upper and lower outgoing lines of the vacuum circuit breaker through a conductive busbar, solving the cost increase caused by the upper bracket and the guiding mechanism in the insulating cylinder; and can offset the impact during the on-off process, maintain the stable connection between the conductive busbar and the upper and lower outgoing lines, and at the same time avoid the problems of the conductive busbar being squeezed and pulled and broken.
[0006] To achieve the above object, the technical solution adopted by the present application is as follows: A conductive loop mechanism for an isolating trolley used in an electrical cabinet. The conductive loop mechanism has an insulating cylinder, and an upper outgoing line and a lower outgoing line are sequentially assembled on the upper and lower sides of the insulating cylinder. The outer ends of the upper outgoing line and the lower outgoing line are both connected with an outgoing line arm and a moving contact, and the circuit is conducted inside the insulating cylinder where the upper outgoing line and the lower outgoing line are located. It is characterized in that:
[0007] A conductive bar is directly connected between the upper outgoing line and the lower outgoing line, and the conductive bar is adjustably assembled and connected with the upper outgoing line or the lower outgoing line.
[0008] Preferably, round holes and adjustment slot holes for connecting to the ends of the upper outgoing line and the lower outgoing line are sequentially opened on the upper and lower sides of the conductive bar.
[0009] Preferably, a deformation section is provided in the conductive bar between the upper outgoing line and the lower outgoing line.
[0010] Preferably, the deformation section is a deformation bending section that faces or is away from the upper outgoing line and the lower outgoing line.
[0011] The beneficial effect of the present application is: The upper outgoing line and the lower outgoing line of the vacuum circuit breaker are directly connected and conducted through the conductive bar, solving the problem of increased cost in the upper support and the guiding mechanism inside the insulating cylinder. And by opening adjustment slot holes on the conductive bar, the up and down displacement of the reserved holes at the end of the upper outgoing line is allowed, so that on the basis of allowing the normal assembly error between the upper outgoing line and the lower outgoing line, the rapid conductive connection between the two is realized.
[0012] And by providing a deformation bending section in the middle of the conductive bar, when the isolating trolley passes through with impact, the deformation bending section deforms accordingly under the impact force, thereby offsetting the impact effect during the on-off process, maintaining the stable connection between the conductive bar and the upper outgoing line and the lower outgoing line, and at the same time avoiding the problems of the conductive bar being squeezed and pulled and broken. Description of the Drawings
[0013] Figure 1 It is a schematic diagram of the partial structure of the current isolating trolley.
[0014] Figure 2 It is a schematic diagram of the conductive loop mechanism of the isolating trolley of the present application.
[0015] Figure 3 For the present application Figure 2 View A (schematic diagram of the assembly process of the conductive bar and the upper and lower outgoing lines).
[0016] Figure 4 It is a schematic diagram of the hole positions opened on the conductive bar of the present application.
[0017] Figure 5 For the present application Figure 2 Enlarged schematic diagram of the structure at position B (schematic diagram of the deflection of the upper and lower outgoing lines after being impacted by on-off).
[0018] Figure 6 This is a diagram showing the fracture of the conductive busbar pulled by the upper and lower outgoing lines of this application after being impacted and deflected.
[0019] Figure 7 This is a diagram showing the conductive busbar with a deformed and bent section provided in this application.
[0020] Figure 8 This is a diagram showing the deformation of the deformed and bent section of this application after being affected by on-off impact.
[0021] Figure 9 This is an enlarged structural diagram showing the connection between the deformed and bent section and the main body of the conductive busbar of this application.
[0022] In the figure: 5d - thickened part; 6 - upper bracket; 7 - aluminum rod; 8 - flexible connection. Detailed implementation manners
[0023] In order to enable those of ordinary skill in the art to better understand the technical solution of this application, the technical solution of this application will be further described below in conjunction with the accompanying drawings and embodiments.
[0024] Referring to Figures 1-9 A conductive loop mechanism of an isolating trolley for an electrical cabinet shown in the figure. This conductive loop mechanism has an insulating cylinder 1. An upper outgoing line 21 and a lower outgoing line 22 are sequentially assembled on the upper and lower sides of the insulating cylinder 1. The outer ends of the upper outgoing line 21 and the lower outgoing line 22 are both connected with outgoing line arms 3 and moving contacts 4. And the circuit is conducted inside the insulating cylinder 1 where the upper outgoing line 21 and the lower outgoing line 22 are located. To solve the problem of increased cost when directly replacing the vacuum interrupter with an aluminum rod to form an isolating trolley in the current situation, as Figure 2 shown in the figure, a conductive busbar 5 is directly connected between the upper outgoing line 21 and the lower outgoing line 22. By directly connecting the upper outgoing line 21 and the lower outgoing line 22 through this conductive busbar 5, the usage cost of the original upper bracket and positioning components in the vacuum circuit breaker is cancelled, thereby reducing the component cost of the isolating trolley and increasing the sales profit.
[0025] During the assembly process of the upper outgoing line 21 and the lower outgoing line 22, there may be a spacing error. Therefore, for the convenience of assembling the conductive busbar 5, the conductive busbar 5 is adjustably assembled and connected with the upper outgoing line 21 or the lower outgoing line 22, so as to allow the normal error during the assembly of the upper outgoing line 21 and the lower outgoing line 22, and at the same time, it is also convenient for the smooth assembly and connection of the conductive busbar 5 with the upper outgoing line 21 and the lower outgoing line 22.
[0026] Specifically, as Figure 4 shown in the figure, round holes 5a and adjustment slotted holes 5b for connecting the ends of the upper outgoing line 21 and the lower outgoing line 22 are sequentially opened on the upper and lower sides of the conductive busbar 5. As Figures 3-4As shown, during assembly, it is first preferred to pass bolts through the round holes 5a to connect one end of the busbar 5 to the lower outgoing line 22. Then, the adjustment slot hole 5b of the busbar 5 is aligned with the reserved hole at the end of the upper outgoing line 21. The adjustment slot hole 5b allows the up and down displacement of the reserved hole at the end of the upper outgoing line 21, so as to achieve the quick conduction connection between the two on the basis of allowing the normal assembly error of the upper outgoing line 21 and the lower outgoing line 22.
[0027] Since the isolating trolley usually conducts a relatively large current, such as the isolating trolley in this application conducts a current of 1250A and is adapted to the KYN61 electrical cabinet, there is a large current impact during the on-off process. This impact is transmitted to the upper outgoing line 21 and the lower outgoing line 22 through the moving contact and the outgoing line arm, and finally transmitted to the body of the busbar 5. The busbar 5 is fixedly connected to the upper outgoing line 21 and the lower outgoing line 22. When the impact forces and slight deflection amplitudes ( Figure 5 as shown by the arrows in the figure) received by the upper outgoing line 21 and the lower outgoing line 22 are different, there is a change in the end-to-end distance between the upper outgoing line 21 and the lower outgoing line 22. When the distance decreases, it causes extrusion on the busbar 5, and when the distance increases, it may cause the busbar 5 to be pulled and broken, as Figure 6 shown, thus affecting the normal conduction between the upper outgoing line 21 and the lower outgoing line 22. Therefore, to solve this problem, as Figure 7 shown, a deformation section is provided between the upper outgoing line 21 and the lower outgoing line 22 where the busbar 5 is located. When there is an impact during the passage of the isolating trolley, the slight deflection of the upper outgoing line 21 and the lower outgoing line 22 acts on the busbar 5, and the deformation section of the busbar 5 deforms accordingly under the impact force, so as to offset the impact during the on-off process, maintain the stable connection between the busbar 5 and the upper outgoing line 21 and the lower outgoing line 22, and at the same time avoid the problems of the busbar 5 being squeezed and pulled and broken.
[0028] As Figure 7 shown, specifically, the deformation section is a deformation bending section 5c that faces towards or away from the upper outgoing line 21 and the lower outgoing line 22. The busbar 5 is usually preferably made of copper material, which has a lower hardness and better electrical conductivity compared to other metals. Therefore, when the distance between the upper outgoing line 21 and the lower outgoing line 22 decreases after being affected by the on-off impact, the deformation bending section 5c of the busbar 5 continues to bend towards the outside, as Figure 8 shown on the left; when the distance between the upper outgoing line 21 and the lower outgoing line 22 increases, it drives the deformation bending section 5c to deform towards the straightened state in the inner area, as Figure 8 shown on the right, thus effectively solving the problem that the normal conduction between the upper outgoing line 21 and the lower outgoing line 22 is affected by the on-off impact.
[0029] To avoid the problem that the connection between the deformation bending section 5c and the body of the busbar 5 is broken due to frequent on-off impacts, preferably, as Figure 9As shown, a thickening portion 5d is provided at the junction of the deformation bending section 5c and the main body of the busbar 5, thereby avoiding the problem of fracture caused by frequent deformation of the deformation bending section 5c.
[0030] The principle of this application is as follows: the upper outgoing line 21 and the lower outgoing line 22 of the vacuum circuit breaker are directly connected and conducted through the busbar 5, solving the problem of increased cost existing in the upper support and the guiding mechanism in the insulating cylinder. By providing an adjustment slot 5b on the busbar 5, the up and down displacement of the reserved hole at the end of the upper outgoing line 21 is allowed, so that on the basis of allowing the normal assembly error between the upper outgoing line 21 and the lower outgoing line 22, the rapid conduction connection between the two is realized.
[0031] And a deformation bending section 5c is provided in the middle of the busbar 5. When there is an impact during the passing of the isolating trolley, the deformation bending section 5c deforms accordingly under the impact force, thereby offsetting the impact effect during the on-off process, maintaining the stable connection between the busbar 5 and the upper outgoing line 21 and the lower outgoing line 22, and at the same time avoiding the problem of the busbar 5 being squeezed and pulled to break.
[0032] The above shows and describes the basic principle, main features and advantages of this application. Without departing from the spirit and scope of this application, various changes and improvements will be made to this application, and these changes and improvements all fall within the scope of this application claimed.
Claims
1. A conductive circuit mechanism of an isolation trolley for an electrical cabinet, the conductive circuit mechanism comprising an insulating cylinder (1), an upper outlet (21) and a lower outlet (22) being sequentially mounted on the upper and lower sides of the insulating cylinder (1), the outer ends of the upper outlet (21) and the lower outlet (22) being connected to an outlet arm (3) and a moving contact (4), and the circuit is conductive when the upper outlet (21) and the lower outlet (22) are located inside the insulating cylinder (1), characterized in that: A conductive bar (5) is directly connected between the upper outlet line (21) and the lower outlet line (22), and the conductive bar (5) can be adjusted to be assembled and connected with the upper outlet line (21) or the lower outlet line (22).
2. The conductive loop mechanism according to claim 1, characterized in that: Circular holes (5a) and adjustment bar holes (5b) connected to the ends of the upper outlet wire (21) and the lower outlet wire (22) are sequentially provided on the upper and lower sides of the conductive bar (5).
3. The conductive loop mechanism according to claim 2, characterized in that: The conductive bar (5) is provided with a deformation section between the upper outlet line (21) and the lower outlet line (22).
4. The conductive loop mechanism according to claim 3, characterized in that: The deformation section is a deformation bending section (5c) that is directed toward or away from the upper outlet line (21) and the lower outlet line (22).