Load resistor device

Abstract

The invention discloses a load resistor device. The load resistor device comprises an insulating bracket and a resistor rope, the insulating bracket comprises two panels which are arranged side by side at an interval; a plurality of rope penetrating holes through which the resistance rope can penetrate are formed in the panels; the resistance rope penetrates through the panel rope penetrating hole back and forth, the resistance rope comprises a heat-resisting main rope and a resistance wire, and the resistance wire is spirally wound on the heat-resisting main rope. When the load resistance box works, the resistance rope penetrates through the panel back and forth, heat is generated when the resistance rope works, the heat-resistant main rope is arranged to be of a main body structure, and the heat-resistant main rope can keep stable in size when the load resistance box works and is small in size change due to expansion caused by heat and contraction caused by cold by utilizing the heat-resistant performance of the heat-resistant main rope; after long-time use, good dimensional stability can be maintained, and short circuit between the resistance wires on the adjacent resistance ropes is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of resistor devices, and in particular to a load resistor device. Background Art

[0002] Resistors are commonly used electronic devices in the electrical field. According to design requirements, they can not only reduce voltage and limit current in the circuit, but also play a role in braking or discharging electricity to consume electrical energy.

[0003] The resistor described in the present invention is a high-power load resistor, which plays an important role in the circuit or equipment. The primary function of the high-power load resistor is to consume excess electricity. For example, excess electricity is generated in the equipment and circuit. In order to prevent the excess current from flowing to other components and equipment, the load resistor can be used to consume electricity. The specific application is motor braking. High-power load resistors are also commonly used in power supply detection and hardware detection. For example, a power supply device is connected through a high-power load resistor, and the power consumption of the load resistor is used to perform parameter testing and aging detection. When performing hardware function detection, the load resistor is often used as an analog product to detect the hardware function. In addition, the high-power load resistor also has the functions of buffering braking and protecting equipment.

[0004] In some resistor boxes with high-power loads, strip resistors are used to improve heat dissipation efficiency and are densely arranged in the resistor box. However, strip resistors are prone to deformation due to long-term operation, resulting in a short-circuit risk. Summary of the invention

[0005] In order to solve the technical problem of resistance deformation in the load resistor in the prior art, one of the objectives of the present invention is to provide a load resistor device.

[0006] One of the purposes of the present invention is achieved by the following technical solution:

[0007] A load resistance device, comprising an insulating bracket and a resistance rope;

[0008] The insulating support comprises two panels spaced apart and arranged side by side, and the panels are provided with a plurality of rope holes through which the resistance rope can pass;

[0009] The resistance rope passes through the rope threading hole of the panel back and forth, and the resistance rope includes a heat-resistant main rope and a resistance wire, and the resistance wire is spirally wound on the heat-resistant main rope.

[0010] Optionally, the heat-resistant main rope is a glass fiber rope.

[0011] Optionally, the rope threading hole array is distributed on the panel.

[0012] Optionally, the rope threading holes are distributed in a rectangular array, and the rectangular array includes x rows and y columns;

[0013] The resistance ropes pass through the rope holes on the panel row by row, and the number of the resistance ropes is z, n×z=x, and n is an integer greater than zero.

[0014] Optionally, n is an even number, y is an odd number, and a single resistance rope passes through the n rows of rope threading holes row by row.

[0015] Optionally, conductive joints are provided at both ends of the resistance rope.

[0016] Optionally, a conductive ring is provided at the first end of the conductive joint, and a crimping portion for crimping the resistance rope is provided at the other end of the conductive joint.

[0017] Optionally, the insulating support further includes a plurality of pillars, wherein the pillars are arranged between the two panels, and two ends of the pillars are respectively connected to the two panels.

[0018] Optionally, the panel is a mica board, a ceramic board or a bakelite board.

[0019] The load resistance device further comprises an adjustment component, wherein the adjustment component comprises an adjustment seat and an adjustment member;

[0020] The adjustment seat is arranged on the rope threading hole on the panel, and an adjustment hole is provided on the adjustment seat;

[0021] The adjusting member is arranged in the adjusting hole in a manner that it can be raised and lowered and adjusted. A through hole is provided in the adjusting member for the resistance rope to pass through, so as to push the conductive joint to move.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the present invention, the resistance rope includes a heat-resistant main rope and a resistance wire. The resistance wire is spirally wound on the heat-resistant main rope. In this way, the heat-resistant main rope is the main structure, and the resistance wire is attached to the heat-resistant main rope. At the same time, the resistance rope is wound with an insulating bracket as a supporting structure. When the load resistance box is working, the resistance rope passes through the panel back and forth. When the resistance rope is working, heat is generated. Since the heat-resistant main rope is set as the main structure and its heat-resistant performance is utilized, the heat-resistant main rope can maintain dimensional stability when the load resistance box is working, and the dimensional change due to thermal expansion and contraction is small. After long-term use, it can maintain good dimensional stability and avoid short circuits between the resistance wires on adjacent resistance ropes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a load resistance device of the present invention;

[0025] Figure 2is an exploded schematic diagram of a load resistance device of the present invention;

[0026] Figure 3 It is a schematic structural diagram of one embodiment of a resistance rope in a load resistance device of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the resistance rope after being straightened in the load resistance device of the present invention;

[0028] Figure 5 It is a side schematic diagram of the load resistance device of the present invention;

[0029] Figure 6 for Figure 5 A magnified view of the local area A.

[0030] Description of the accompanying drawings:

[0031] 1. Insulation bracket; 11. Panel; 111. Rope threading hole; 12. Support column;

[0032] 2. resistance rope; 21. heat-resistant main rope; 22. resistance wire; 23. conductive joint; 231. conductive ring; 232. crimping part;

[0033] 3. Adjustment assembly; 31. Adjustment seat; 311. Adjustment hole; 32. Adjustment piece; 321. Through hole; 322. Spring slot; 33. Locking screw; 34. Spring. DETAILED DESCRIPTION

[0034] The following will be combined with the attached examples of the present application Figure 1 To Attachment Figure 6 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0035] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] like Figure 1-4 As shown, the present invention provides a load resistance device, which includes an insulating support 1 and a resistance rope 2. The insulating support 1 includes two panels 11 spaced and arranged side by side, and the panels 11 are provided with a plurality of rope holes 111 through which the resistance rope 2 can pass. The resistance rope 2 passes through the rope holes 111 of the panel 11 back and forth, and the resistance rope 2 includes a heat-resistant main rope 21 and a resistance wire 22, and the resistance wire 22 is spirally wound on the heat-resistant main rope 21.

[0038] In the present invention, the resistance rope 2 includes a heat-resistant main rope 21 and a resistance wire 22. The resistance wire 22 is spirally wound on the heat-resistant main rope 21. In this way, the heat-resistant main rope 21 is the main structure, and the resistance wire 22 is attached to the heat-resistant main rope 21. At the same time, the resistance rope 2 is wound with the insulating bracket 1 as a supporting structure. When the load resistance box is working, the resistance rope 2 passes through the panel 11 back and forth. When the resistance rope 2 is working, heat is generated. Since the heat-resistant main rope 21 is set as the main structure and its heat-resistant performance is utilized, the heat-resistant main rope 21 can maintain dimensional stability when the load resistance box is working, and the dimensional change due to thermal expansion and contraction is small. Moreover, after long-term use, it can maintain good dimensional stability and is not easily stretched, so as to avoid short circuits between the resistance wires 22 on adjacent resistance ropes 2.

[0039] In the present invention, the heat-resistant main rope 21 specifically refers to a rope that can meet the use strength and maintain good dimensional stability at a high temperature of 200°C. The heat-resistant main rope 21 is a glass fiber rope or an aramid fiber rope. Of course, the heat-resistant main rope 21 can also be other ropes with good heat resistance.

[0040] The resistance wire 22 is spirally wound around the heat-resistant main rope 21, which specifically includes single spiral winding and multi-spiral winding. Multi-spiral winding can specifically be double spiral residual winding, triple spiral winding, quad spiral winding or other number of spiral windings. Among them, single spiral winding is a single resistance wire 22 spirally wound on the heat-resistant main rope 21, double spiral winding is two resistance wires 22 spirally wound side by side on the heat-resistant main rope 21, triple spiral winding is three resistance wires 22 spirally wound side by side on the heat-resistant main rope 21, and other numbers are analogous. When multi-spiral winding of the same size resistance wire 22 is performed, the resistance wire 22 increases, and multiple resistance wires 22 are connected in parallel to reduce resistance, increase load power, and improve the power density of the load resistance box. When multi-spiral winding of the same resistance value resistance wire 22 is performed, the radius size increases, the overall heat dissipation surface knot increases, and under the same power, it has a better heat dissipation effect.

[0041] In addition, the spacing of adjacent resistance wires 22 can increase the spacing between the resistance wires 22 on the same heat-resistant main rope 21, thereby increasing the heat dissipation effect of the resistance wires 22, and can also prevent the short circuit between adjacent resistance wires 22 on the same heat-resistant main rope 21. Preferably, an insulating layer can be further provided on the surface of the resistance wires 22 to prevent the short circuit between adjacent resistance wires 22.

[0042] For the panel 11, the rope threading holes 111 thereon are arranged in an array on the panel 11. The rope threading holes 111 are arranged in an array, densely and evenly, thereby improving space utilization.

[0043] For example, the rope holes 111 are distributed in a rectangular array, and the rectangular array includes x rows and y columns. The resistance ropes 2 pass through the n rows of rope holes 111 on the panel 11 row by row, and the number of resistance ropes 2 is z, n×z=x, and n is an integer greater than zero. For example, x is 5 and y is 5. At this time, 5 resistance ropes 2 can be arranged to pass through the insulating bracket 1 in a single row. For example, x is 8 and y is 9, 8 resistance ropes 2 can be arranged to pass through the insulating bracket 1 in a single row, or 4 resistance ropes 2 can be arranged to pass through the insulating bracket 1 in two rows, or two resistance ropes 2 can be arranged to pass through the insulating bracket 1 in four rows.

[0044] Furthermore, if Figure 2 , Figure 3 As shown, n is an even number, y is an odd number, and a single resistance rope 2 passes through n rows of rope holes 111 row by row. When n is an even number, a single resistance rope 2 passes through even rows row by row, and the end of the resistance rope 2 can pass through to the same side of the starting end. When y is an odd number, the end of the resistance rope 2 passes through the same panel 11, and the end of the resistance rope 2 and the starting end of the resistance rope 2 are located in the same column of the panel 11. It can be considered that the starting end and the end of each resistance rope 2 on the load resistance device are arranged in the starting column of the same panel 11, so that the starting end and the end of the resistance rope 2 are easy to assemble and connect.

[0045] In some embodiments of the load resistor device, such as Figure 4 As shown, conductive joints 23 are provided at both ends of the resistance rope 2, and the conductive joints 23 are connected.

[0046] Specifically, a conductive ring 231 is provided at the first end of the conductive connector 23, and a crimping portion 232 for crimping the resistance rope 2 is provided at the other end of the conductive connector 23. The conductive ring 231 is a power connection structure for inputting or outputting electric energy. When the resistance ropes 2 need to be connected in series or parallel, the conductive ring 231 is a connection structure between the resistance ropes 2.

[0047] In some embodiments of the insulating support 1, such as Figure 1 As shown, the insulating support 1 further includes a plurality of pillars 12, which are disposed between the two panels 11, and the two ends of the pillars 12 are respectively connected to the two panels 11. Specifically, the panels 11 are mica boards, ceramic boards or bakelite boards.

[0048] The load resistor device also includes an adjustment component 3, such as Figure 5 , Figure 6 As shown, specifically, the adjustment assembly 3 includes an adjustment seat 31 and an adjustment member 32. The adjustment seat 31 is arranged on the rope threading hole 111 on the panel 11. The adjustment seat 31 is provided with an adjustment hole 311. The adjustment member 32 is arranged in the adjustment hole 311 so as to be adjustable and adjustable. At the same time, a through hole 321 is provided in the adjustment member 32 for the resistance rope 2 to pass through, so as to push the conductive connector 23 to move. After the resistance rope 2 is threaded, the two ends of the resistance rope 2 need to be shortened and the conductive connector 23 is assembled. In addition, the resistance rope 2 is usually manually threaded on the insulating frame. In this way, it is difficult to achieve accurate dimensions of the two ends of the resistance rope 2, and it is easy to make the part of the resistance rope 2 between the two panels 11 too long, thereby causing a short circuit problem. In this embodiment, the adjustment assembly 3 is arranged on the rope threading hole 111, and the lifting and lowering of the adjustment member 32 is used to push the conductive connector 23 to move, specifically, to push the crimping part 232 to move, thereby tensioning the resistance rope 2, and at the same time, it is also convenient to tighten the resistance rope 2 when the resistance rope 2 is deformed. In addition, in subsequent maintenance, the adjusting member 32 can also be used to push the conductive joint 23 to move to adjust the state of the resistance rope 2.

[0049] Specifically, the adjustment hole 311 is a threaded hole, and the outer surface of the adjustment member 32 is provided with an external thread, that is, the adjustment member 32 is threadedly matched with the adjustment seat 31, and the adjustment member 32 is rotated to achieve lifting and lowering adjustment. The adjustment member 32 pushes the conductive connector 23 to move, thereby tightening the resistance rope 2 so that the resistance rope 2 can remain straightened.

[0050] Furthermore, if Figure 5 , Figure 6As shown, the adjustment component 3 also includes a locking screw 33. The adjustment seat 31 and the locking screw 33 are respectively located on both sides of the panel 11. A portion of the adjustment seat 31 passes through the rope hole 111. The locking screw 33 is threadedly connected to the portion of the adjustment seat 31 that passes through the rope hole 111, so as to lock the adjustment seat 31.

[0051] Furthermore, if Figure 6 As shown, a spring slot 322 is also provided in the through hole 321 of the adjusting member 32. The adjusting assembly 3 also includes a spring 34, one end of the spring 34 extends into the spring slot 322, and the other end of the spring 34 protrudes from the spring slot 322 and abuts against the conductive connector 23. After the spring 34 is provided, the adjustment range is effectively increased. At the same time, the elastic abutment of the spring 34 makes the connection between the adjusting member 32 and the conductive connector 23 buffered, thereby preventing the resistance rope 2 from being damaged by hard pulling.

[0052] Specifically, the adjusting member 32 includes a threaded barrel and a knob, which is rotatably arranged at one end of the threaded barrel. The outer surface of the threaded barrel has external threads, and the interior of the threaded barrel has the aforementioned through hole.

[0053] The adjustment seat 31 includes a sleeve and a bottom plate. The sleeve is arranged on the bottom plate. The sleeve is provided with the aforementioned through hole. The inner wall of the through hole is provided with an internal thread. The outer surface of the sleeve is provided with an external thread. During assembly, the sleeve is inserted into the rope threading hole. The locking screw 33 is threadedly connected with the portion of the sleeve that passes through the rope threading hole 111. In this way, the adjustment seat 31 can be fixed by tightening the locking screw 33. The threaded barrel is inserted into the through hole of the sleeve, and the threaded barrel is threadedly connected with the sleeve.

[0054] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A load resistance device, characterized in that: The load resistance device comprises an insulating bracket and a resistance rope; The insulating support comprises two panels spaced apart and arranged side by side, and the panels are provided with a plurality of rope holes through which the resistance rope can pass; The resistance rope passes through the rope threading hole of the panel back and forth, and the resistance rope includes a heat-resistant main rope and a resistance wire, and the resistance wire is spirally wound on the heat-resistant main rope.

2. The load resistance device according to claim 1, characterized in that The heat-resistant main rope is a glass fiber rope.

3. The load resistance device according to claim 1, characterized in that: The rope threading hole array is distributed on the panel.

4. The load resistance device according to claim 3, characterized in that: The rope threading holes are distributed in a rectangular array, and the rectangular array includes x rows and y columns; The resistance ropes are passed through n rows of rope holes on the panel row by row, and the number of the resistance ropes is z, n×z=x, and n is an integer greater than zero.

5. The load resistance device according to claim 4, characterized in that: n is an even number, y is an odd number, and a single resistance rope passes through the n rows of rope holes row by row.

6. The load resistance device according to claim 5, characterized in that: Conductive joints are provided at both ends of the resistance rope.

7. The load resistance device according to claim 6, characterized in that: A conductive ring is provided at the first end of the conductive joint, and a crimping portion for crimping the resistance rope is provided at the other end of the conductive joint.

8. The load resistance device according to claim 1, characterized in that: The insulating support further comprises a plurality of pillars, wherein the pillars are arranged between the two panels, and the two ends of the pillars are respectively connected to the two panels.

9. The load resistance device according to claim 1, characterized in that: The panel is a mica board, a ceramic board or a bakelite board.

10. The load resistance device according to claim 1, wherein: The load resistance device further comprises an adjustment component, wherein the adjustment component comprises an adjustment seat and an adjustment member; The adjustment seat is arranged on the rope threading hole on the panel, and an adjustment hole is provided on the adjustment seat; The adjusting member is arranged in the adjusting hole in a manner that it can be raised and lowered and adjusted. A through hole is provided in the adjusting member for the resistance rope to pass through, so as to push the conductive joint to move.

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