Detachable circular brake resistor

Abstract

The invention discloses a detachable circular brake resistor, which belongs to the technical field of vehicle brake resistors and comprises a circular structure, a plurality of fan-shaped resistor frames, an electrical connection assembly and a plurality of junction boxes. The circular structure is divided into a plurality of ventilation cavities through a plurality of partition plates. And the plurality of fan-shaped resistor frames are sequentially arranged along the length direction of the corresponding ventilation cavities, and the fan-shaped resistor frames are in sliding connection with the corresponding ventilation cavities. According to the scheme, the brake resistor takes the fan-shaped resistor frames as minimum resistor units and is arranged in the circular structure by adopting modular design, and the fan-shaped resistor frames can be mutually exchanged, so that spare part management of products is facilitated. A mutually slidable structure is adopted between the fan-shaped resistor frame and each ventilation cavity, the fan-shaped resistor frame is disassembled, assembled and maintained from the air outlet along the ventilation direction, and the disassembly of the brake resistor can be conveniently completed on the premise that large equipment such as a crane is not used.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle brake resistors, and in particular relates to a high-power circular brake resistor. Background Art

[0002] High-power brake resistors are used to be installed on large special vehicles and are arranged adjacent to the converter. Their main function is to participate in deceleration and braking and control vehicle speed. Since the operation of the resistor generates a lot of heat, the brake resistor usually uses a large-diameter AC fan for forced ventilation cooling. The cooling air is sucked in from the converter side of the platform, flows into the brake resistor after passing through the cooling fan, and the cooling air takes away the heat and is discharged into the atmosphere from the outlet.

[0003] Due to the limited operating space around the brake resistor, when the resistor belt inside the brake resistor fails, it is impossible to directly remove the internal resistor belt as a whole for maintenance after opening the air outlet mesh plate of the front cover. In addition, the overall weight of the brake resistor is quite large, and it is usually necessary to use large lifting equipment such as a crane to remove the brake resistor as a whole, and then disassemble and maintain it. The disassembly and assembly process is very complicated and maintenance is very difficult. Summary of the invention

[0004] The object of the present invention is to provide a detachable circular brake resistor to solve the above problems in the prior art.

[0005] A detachable circular brake resistor is provided, comprising:

[0006] A circular structure, wherein the circular structure is divided into a plurality of ventilation cavities by a plurality of partitions, and an air outlet end of the circular structure is detachably connected to an air outlet mesh plate;

[0007] A plurality of fan-shaped resistor frames, wherein the fan-shaped resistor frames are sequentially arranged along the length direction of the corresponding ventilation cavity, and the fan-shaped resistor frames are slidably connected to the corresponding ventilation cavity;

[0008] An electrical connection component, through which the plurality of fan-shaped resistor frames are electrically connected;

[0009] A plurality of junction boxes are provided on the side wall of the circular structure, and a plurality of the fan-shaped resistor frames are electrically connected to the corresponding junction boxes through electrical connection components.

[0010] Furthermore, a plurality of guide grooves extending along the length direction of the circular structure are arranged on the inner wall of the ventilation cavity, and a plurality of rollers are arranged on the side wall of the fan-shaped resistor frame, and the plurality of rollers can roll along the inside of the corresponding guide grooves.

[0011] Furthermore, a first insulator is provided between the roller and the fan-shaped resistor frame and the roller and the fan-shaped resistor frame are fixedly connected through the first insulator.

[0012] Furthermore, the electrical connection assembly includes a plurality of interconnected copper busbars, and the plurality of partitions are combined to form a cylindrical cavity at the axial center of the circular structure, and the corresponding two fan-shaped resistor frames are electrically connected in the cylindrical cavity through the interconnected copper busbars, and the corresponding two fan-shaped resistor frames are electrically connected in the junction box through the interconnected copper busbars.

[0013] Furthermore, the electrical connection assembly also includes a plurality of outgoing copper bars, the positive and negative poles of the resistance segment formed by interconnecting the plurality of fan-shaped resistor frames through the interconnecting copper bars are located in the junction box, and the outgoing copper bars are respectively arranged on the positive and negative poles of the resistance segment.

[0014] Furthermore, the interconnected copper busbar includes two interconnected ends and a soft copper wire interconnected segment, and two ends of the soft copper wire interconnected segment are respectively connected to the corresponding fan-shaped resistor frame bolts through the two interconnected ends.

[0015] Furthermore, a second insulator is provided between the soft copper wire interconnection section and the partition, and the two sections are fixedly connected via the second insulator.

[0016] Furthermore, the outlet copper busbar comprises an outlet terminal and a soft copper wire outlet segment, and the soft copper wire outlet segment is bolted to the corresponding fan-shaped resistor frame through the outlet terminal.

[0017] Furthermore, a second insulator is provided between the soft copper wire outlet segment and the junction box, and the two segments are fixedly connected via the second insulator.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The brake resistor of this solution uses a fan-shaped resistor frame as the smallest resistor unit, which is placed in a circular structure using a modular design. Each fan-shaped resistor frame can be interchanged with each other, making it easy to manage spare parts for the product. The fan-shaped resistor frame and each ventilation cavity adopt a mutually slidable structure, and the fan-shaped resistor frame can be disassembled and maintained from the air outlet along the ventilation direction. The brake resistor can be easily disassembled without using large equipment such as a crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the internal structure of a detachable circular brake resistor;

[0022] Figure 2 It is a schematic diagram of the external structure of a detachable circular braking resistor;

[0023] Figure 3 A schematic diagram of the structure of the guide groove and the roller provided in an embodiment of the present invention;

[0024] Figure 4 An internal structure diagram of a cylindrical cavity provided by an embodiment of the present invention;

[0025] Figure 5 This is a diagram of the internal structure of a junction box provided in an embodiment of the present invention.

[0026] In the figure: 1. circular structure; 11. partition; 12. ventilation cavity; 13. air outlet mesh plate; 14. cylindrical cavity; 2. fan-shaped resistor frame; 3. electrical connection assembly; 31. interconnection copper busbar; 311. interconnection end; 312. soft copper wire interconnection segment; 32. outlet copper busbar; 321. outlet end; 322. soft copper wire outlet segment; 4. guide groove; 5. roller; 51. first insulator; 6. second insulator; 7. junction box. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0029] See also Figure 1 , Figure 2 and Figure 4 As shown, in an embodiment of the present invention, a detachable circular brake resistor includes a circular structure 1, a plurality of fan-shaped resistor frames 2, an electrical connection assembly 3 and a plurality of junction boxes 7. The circular structure 1 is divided into a plurality of ventilation cavities 12 by a plurality of partitions 11, and an air outlet mesh plate 13 is detachably connected to the air outlet end of the circular structure 1. The plurality of fan-shaped resistor frames 2 are sequentially arranged along the length direction of the corresponding ventilation cavity 12, and the fan-shaped resistor frames 2 are slidably connected to the corresponding ventilation cavity 12. The plurality of fan-shaped resistor frames 2 are electrically connected through the electrical connection assembly 3. The plurality of junction boxes 7 are arranged on the side wall of the circular structure 1, and the plurality of fan-shaped resistor frames 2 are electrically connected to the corresponding junction boxes 7 through the electrical connection assembly 3.

[0030] The fan-shaped resistor frame 2 is located in the ventilation cavity 12, and the heat generated during operation is accumulated in the ventilation cavity 12. In addition to the circular structure 1, the brake resistor also includes a fan located at the rear end of the circular structure 1. The fan delivers cooling air to the inside of each ventilation cavity 12, and the airflow takes away the heat and is discharged into the atmosphere from the air outlet mesh plate 13. The air outlet mesh plate 13 can be removed from the circular structure 1, and each fan-shaped resistor frame 2 can be slid out from the air outlet, which simplifies the preparatory work for disassembly and maintenance of a single resistor unit. The electrical connection assembly 3 is used to connect each fan-shaped resistor frame 2 so that each fan-shaped resistor frame 2 is connected as a resistor segment as a whole, and the resistor segment is connected to the junction box 7 to achieve electrical connection between the converter and the resistor segment.

[0031] For a single ventilation cavity 12, the fan-shaped resistor frame 2 is pushed in layer by layer. The first fan-shaped resistor frame 2 pushed in is limited by the baffle installed in advance at the end. The subsequent fan-shaped resistor frame 2 contacts with the previous fan-shaped resistor frame 2, and after the last fan-shaped resistor frame 2 is pushed in, the positions of several layers of fan-shaped resistor frames 2 are constrained by squeezing, and finally limited by the air outlet mesh plate 13.

[0032] See also Figure 1-Figure 3 As shown, the slidable structure between the fan-shaped resistor frame 2 and the ventilation cavity 12 is specifically realized by the guide groove 4 and the roller 5. The guide groove 4 is arranged along the inner wall of the ventilation cavity 12, and the roller 5 is installed on the side wall of the fan-shaped resistor frame 2. When the fan-shaped resistor frame 2 needs to be taken out or stored in the circular structure 1, the fan-shaped resistor frame 2 slides along the predetermined track in the guide groove 4 through the roller 5, thereby reducing the storage and retrieval resistance of the fan-shaped resistor frame 2. The guide groove 4 prevents the roller 5 from running off and improves the running stability of the roller 5 by limiting on both sides.

[0033] Since the working voltage of the sector-shaped resistor frame 2 is high, in order to prevent arc breakdown and leakage, a first insulator 51 is provided between the roller 5 and the sector-shaped resistor frame 2 and the first insulator 51 is fixedly connected. The first insulator 51 protects various components through good insulation performance.

[0034] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the electrical connection assembly 3 includes a plurality of interconnected copper bars 31. After the fan-shaped resistor frame 2 is pushed into the circular structure 1 and fixed, it is only installed structurally, and a section of the resistor needs to be connected electrically. Since the shape of the ventilation cavity 12 is adapted to the shape of the fan-shaped resistor frame 2, the plurality of partitions 11 constituting the ventilation cavity 12 can form a cylindrical cavity 14 at the axial center of the circular structure 1 after being combined. The corresponding two fan-shaped resistor frames 2 are electrically connected in the cylindrical cavity 14 through the interconnected copper bars 31, and the corresponding two fan-shaped resistor frames 2 are electrically connected in the junction box 7 through the interconnected copper bars 31.

[0035] The electrical connection taps of the sector-shaped resistor frame 2 of the sub-scheme are arranged on both sides of the annular area. In the cylindrical cavity 14 area, the interconnection of two adjacent and corresponding sector-shaped resistor frames 2 is completed by the interconnection copper bus 31. In the junction box 7 area, the interconnection of the above-mentioned several groups of sector-shaped resistor frames 2 that have been interconnected is also completed by the interconnection copper bus 31, thereby forming a resistor segment and realizing the electrical connection of several sector-shaped resistor frames 2 in a single ventilation cavity 12.

[0036] The electrical connection assembly 3 also includes a plurality of outgoing copper bars 32. The positive and negative poles of the resistance segment formed by interconnecting a plurality of sector-shaped resistor frames 2 through the interconnecting copper bars 31 are located in the junction box 7. Outgoing copper bars 32 are respectively provided on the positive and negative poles of the resistance segment. Finally, at the positive and negative poles of the resistance segment, the taps of the sector-shaped resistor frame 2 are connected to the insulator of the junction box 7 through the outgoing copper bars 32. The external cable passes through the fixed mounting hole of the outgoing copper bars 32 to realize the electrical connection between the converter and the resistance segment.

[0037] The interconnection copper busbar 31 includes two interconnection ends 311 and a soft copper wire interconnection section 312. The two ends of the soft copper wire interconnection section 312 are respectively connected to the corresponding fan-shaped resistor frame 2 by bolts through the two interconnection ends 311. The soft copper wire interconnection section 312 can be deformed. When disassembling and maintaining, the relevant interconnection copper busbar 31 can be pulled out from the fan-shaped resistor frame 2 structure only by disassembling the installation bolts of the tap on the fan-shaped resistor frame 2. In this way, when maintaining the resistor unit, only the minimum number of electrical connection bolts need to be disassembled.

[0038] Similarly, the outlet copper busbar 32 includes an outlet terminal 321 and a soft copper wire outlet segment 322, and the soft copper wire outlet segment 322 is bolted to the corresponding fan-shaped resistor frame 2 through the outlet terminal 321. The soft copper wire outlet segment 322 can be deformed, and during disassembly and maintenance, the relevant outlet copper busbar 32 can be pulled out from the fan-shaped resistor frame 2 structure only by removing the mounting bolts of the tap on the fan-shaped resistor frame 2, thereby simplifying the disassembly steps.

[0039] A second insulator 6 is provided between the soft copper wire interconnection section 312 and the partition 11 and is fixedly connected by the second insulator 6. When the interconnection copper bar 31 and the fan-shaped resistor frame 2 are connected and working normally, the soft copper wire interconnection section 312 is fixed on the partition 11 by the second insulator 6 to prevent the flexible soft copper wire interconnection section 312 from moving, resulting in leakage and arc breakdown.

[0040] A second insulator 6 is also provided between the soft copper wire outlet segment 322 and the junction box 7, and the two segments are fixedly connected by the second insulator 6. When the outlet copper bar 32 and the fan-shaped resistor frame 2 are connected and working normally, the soft copper wire outlet segment 322 is fixed to the junction box 7 by the second insulator 6 to prevent the flexible soft copper wire outlet segment 322 from moving, which may cause leakage and arc breakdown.

[0041] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A detachable circular brake resistor, characterized in that: include: A circular structure (1), wherein the circular structure (1) is divided into a plurality of ventilation chambers (12) by a plurality of partitions (11), and an air outlet end of the circular structure (1) is detachably connected to an air outlet mesh plate (13); A plurality of fan-shaped resistor frames (2), wherein the fan-shaped resistor frames (2) are arranged in sequence along the length direction of the corresponding ventilation cavity (12), and the fan-shaped resistor frames (2) are slidably connected to the corresponding ventilation cavity (12); An electrical connection component (3), wherein the plurality of fan-shaped resistor frames (2) are electrically connected to each other via the electrical connection component (3); A plurality of junction boxes (7), wherein the plurality of junction boxes (7) are arranged on the side wall of the circular structure (1), and the plurality of fan-shaped resistor frames (2) are electrically connected to the corresponding junction boxes (7) via an electrical connection assembly (3).

2. A detachable circular brake resistor according to claim 1, characterized in that: A plurality of guide grooves (4) extending along the length direction of the circular structure (1) are arranged on the inner wall of the ventilation cavity (12), and a plurality of rollers (5) are arranged on the side wall of the fan-shaped resistor frame (2), and the plurality of rollers (5) can roll along the inside of the corresponding guide grooves (4).

3. A detachable circular brake resistor according to claim 2, characterized in that: A first insulator (51) is provided between the roller (5) and the fan-shaped resistor frame (2), and the roller (5) and the fan-shaped resistor frame (2) are fixedly connected via the first insulator (51).

4. A detachable circular brake resistor according to claim 1, characterized in that: The electrical connection assembly (3) comprises a plurality of interconnected copper bars (31), and the plurality of partitions (11) are combined to form a cylindrical cavity (14) at the axial center of the circular structure (1), and the corresponding two sector-shaped resistor frames (2) are electrically connected in the cylindrical cavity (14) through the interconnected copper bars (31), and the corresponding two sector-shaped resistor frames (2) are electrically connected in the junction box (7) through the interconnected copper bars (31).

5. A detachable circular brake resistor according to claim 4, characterized in that: The electrical connection assembly (3) further comprises a plurality of outgoing copper bars (32), the positive and negative poles of the resistance segment formed by interconnecting the plurality of sector-shaped resistance frames (2) via the interconnecting copper bars (31) are located in the junction box (7), and the outgoing copper bars (32) are respectively arranged on the positive and negative poles of the resistance segment.

6. A detachable circular brake resistor according to claim 4, characterized in that: The interconnected copper busbar (31) comprises two interconnected ends (311) and a soft copper wire interconnected section (312), and two ends of the soft copper wire interconnected section (312) are respectively bolted to the corresponding fan-shaped resistor frame (2) via the two interconnected ends (311).

7. A detachable circular brake resistor according to claim 6, characterized in that: A second insulator (6) is provided between the soft copper wire interconnection section (312) and the partition (11), and the two are fixedly connected via the second insulator (6).

8. The detachable circular brake resistor according to claim 5, characterized in that: The outlet copper busbar (32) comprises an outlet terminal (321) and a soft copper wire outlet segment (322), and the soft copper wire outlet segment (322) is bolted to a corresponding fan-shaped resistor frame (2) via the outlet terminal (321).

9. A detachable circular brake resistor according to claim 8, characterized in that: A second insulator (6) is provided between the soft copper wire outlet section (322) and the junction box (7), and the two are fixedly connected via the second insulator (6).

Images