A braking resistor box

Abstract

The utility model relates to the technical field of brake resistance box discloses a brake resistance box, including base, resistance disc and top cap, the quantity of resistance disc is multiple, multiple resistance disc is placed between the superposition, the resistance disc fixed setting in the lower end is in the base upper end, the top cap is connected and is arranged in the resistance disc upper end in the upper end, the resistance disc both sides and close to its rear end in the upper end and the lower end can detachably set up the fixed plate. In the utility model, the resistance box can realize the resistance disc to pull out and close the body shape to place and use the resistance element, can eliminate the influence of lead resistance, avoids the error of current lead resistance and contact resistance, and has the dustproof and moistureproof, reduces the abrasion, reduces the cost of maintenance and the good characteristics of operation experience, thereby improves the precision, stability and easy use of the resistance box.

Description

Technical Field

[0001] This utility model relates to the field of braking resistor box technology, and in particular to a braking resistor box. Background Technology

[0002] A braking resistor box is an electronic device primarily used in the energy-consumption braking circuit of frequency converters. It works in conjunction with the braking unit to achieve energy consumption control, equipment protection, and stable control functions. Its core applications cover industrial automation, lifting machinery, elevator systems, new energy power generation, and rail transportation.

[0003] According to research, existing braking resistor boxes typically use mechanical contact between copper plugs and brass sockets during use. The contact resistance may be large and unstable. Replacing the resistor requires plugging and unplugging, which is slow. Frequent plugging and unplugging can cause socket deformation and loosening, and copper plug loss or damage, further aggravating the instability of contact resistance. The exposed sockets and copper plug surfaces are prone to oxidation or contamination with dust and oil, resulting in poor contact, significantly increased and fluctuating contact resistance.

[0004] Therefore, those skilled in the art have provided a braking resistor box to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a braking resistor box. This resistor box, through the action of a detachable retaining plate and a connecting plate, allows the resistor disk to be pulled out into a ladder shape or tightly closed into a solid form for the placement and use of the resistive element. It also eliminates the influence of lead resistance, avoids errors caused by current lead resistance and contact resistance, and features dust and moisture protection, reduced wear, lower maintenance costs, and a better user experience. Therefore, it improves the accuracy, stability, and ease of use of the resistor box.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A braking resistor box includes a base, resistor disks, and a top cover. The resistor disks are stacked together. The lower resistor disk is fixedly mounted on the upper end of the base. The top cover is snapped onto the upper end of the upper resistor disk. Fixing plates are detachably mounted on both sides of the upper and lower resistor disks near their rear ends. Multiple connecting plates are detachably mounted on both sides of the multiple resistor disks.

[0008] Through the above technical solution, the resistor disk can be pulled out into a ladder shape and tightly closed into a solid form by means of the detachable limiting plate and connecting plate, so as to place and use the resistive element. At the same time, it can eliminate the influence of lead resistance, avoid the error caused by current lead resistance and contact resistance, and has the characteristics of dustproof and moisture-proof, reduced wear, reduced maintenance cost and good operation experience, thereby improving the accuracy, stability and ease of use of the resistor box.

[0009] Furthermore, multiple resistor slots are equidistantly provided inside the multiple resistor disks. The upper resistor disk has locking slots on both sides and at both ends. Positioning frames are fixedly provided on both sides of the lower end of the top cover. Locking blocks are fixedly provided on the outer sides of the two positioning frames and at both ends. The four locking blocks are respectively locked into the corresponding locking slots.

[0010] By using the above technical solution, the top cover can be installed and removed by inserting the locking blocks into the corresponding locking slots, so as to replace the resistive elements inside the resistive disk at the top and prevent dust and moisture.

[0011] Furthermore, multiple connecting slots are equally spaced on both sides of the multiple resistor disks, and through holes are provided on the multiple limiting plates and connecting plates;

[0012] Furthermore, each of the multiple limiting plates and connecting plates has a fastening bolt threaded on one side, and the multiple fastening bolts pass through the corresponding through holes and are threaded into the connecting hole groove;

[0013] Through the above technical solutions, the connecting slots, through holes, and fastening bolts can achieve a stable connection between multiple resistance discs, avoid misalignment between the resistance discs, and ensure the overall stability of the resistance box.

[0014] Furthermore, a limiting protrusion is fixedly provided on the inner side of both limiting plates and near their lower ends, and the two limiting protrusions are respectively inserted into the connecting hole groove of the resistor disk located at the lower end;

[0015] By using the above technical solution, the locking protrusions are respectively inserted into the connecting hole grooves of the resistor disk located at the lower end, which can further ensure the stability of the resistor disk's closed body shape.

[0016] This utility model has the following beneficial effects:

[0017] This utility model proposes a braking resistor box. Through the action of a detachable limiting plate and connecting plate, the resistor disk can be pulled out into a ladder shape and tightly closed into a solid shape for the placement and use of the resistive element. At the same time, it can eliminate the influence of lead resistance and avoid errors caused by current lead resistance and contact resistance. It also has the characteristics of dustproof and moisture-proof, reduced wear, reduced maintenance costs and good operation experience, thereby improving the accuracy, stability and ease of use of the resistor box. Attached Figure Description

[0018] Figure 1 This is a perspective view of the closed state of a braking resistor box proposed in this utility model;

[0019] Figure 2 This is a perspective view of the unfolded state of a braking resistor box proposed in this utility model;

[0020] Figure 3 This is an exploded view of a braking resistor box proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the resistor disk structure of a braking resistor box proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the top cover structure of a braking resistor box proposed in this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Base; 2. Resistance disk; 3. Top cover; 4. Resistance groove; 5. Locking groove; 6. Positioning frame; 7. Locking block; 8. Fixing plate; 9. Connecting plate; 10. Connecting hole groove; 11. Through hole; 12. Fastening bolt; 13. Fixing protrusion. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Reference Figures 1-5 This utility model provides a specific implementation method:

[0027] A braking resistor box includes a base 1, resistor disks 2, and a top cover 3. Multiple resistor disks 2 are stacked together. The lower resistor disk 2 is fixedly mounted on the upper part of the base 1. The top cover 3 is snapped onto the upper part of the upper resistor disk 2. Removable retaining plates 8 are detachably mounted on both sides of the upper and lower resistor disks 2, near their rear ends. Multiple connecting plates 9 are detachably mounted on both sides of the multiple resistor disks 2. Through the action of the detachable retaining plates 8 and connecting plates 9, the resistor disks 2 can be pulled out into a ladder shape or tightly closed into a single unit shape. This design facilitates the placement and use of resistive elements, eliminates the influence of lead resistance, avoids errors caused by current lead resistance and contact resistance, and features dust and moisture protection, reduced wear, lower maintenance costs, and a better user experience. This improves the accuracy, stability, and ease of use of the resistor box. Multiple resistor disks 2 have equidistant resistor slots 4 inside. The upper resistor disk 2 has locking slots 5 on both sides and at both ends. Positioning brackets 6 are fixedly installed on both sides of the lower end of the top cover 3. The two positioning brackets 6 are also fixedly installed on their outer sides and at both ends. Four locking blocks 7 are fixedly installed, each locking into a corresponding locking groove 5. By locking the locking blocks 7 into their respective locking grooves 5, the top cover 3 can be installed and removed, allowing for the replacement of the resistive elements inside the resistance disk 2 at the top and providing dust and moisture protection. Multiple connecting slots 10 are equidistantly opened on both sides of the multiple resistance disks 2. Through holes 11 are opened on multiple limiting plates 8 and connecting plates 9. Fastening bolts 12 are threaded onto one side of each of the multiple limiting plates 8 and connecting plates 9, and each fastening bolt 12 passes through its corresponding through hole 11. The thread extends into the connecting slot 10. The connecting slot 10, through hole 11, and fastening bolt 12 can achieve a stable connection between multiple resistance disks 2, avoid the displacement between resistance disks 2, and ensure the overall stability of the resistance box. The inner side of the two limiting plates 8 and near their lower ends are fixedly provided with limiting protrusions 13. The two limiting protrusions 13 are respectively inserted into the connecting slot 10 of the resistance disk 2 at the lower end. By the limiting protrusions 13 being inserted into the connecting slot 10 of the resistance disk 2 at the lower end, the stability of the resistance disk 2's closed body shape can be further ensured.

[0028] Working principle: When using this braking resistor box, by loosening the fastening bolt 12 and disengaging the limiting protrusion 13 at the limiting plate 8 from the connecting hole groove 10, the resistor disk 2 can be pulled into a ladder-like state by the connecting plate 9, which facilitates the replacement and placement of the resistor element in the resistor groove 4. Then, by pushing the resistor disk 2 again, the resistor disk 2 can be closed into a whole by the connecting plate 9. Tightening the fastening bolt 12 ensures the stability between the resistor disks 2, making it dustproof and moisture-proof during use, reducing maintenance costs and improving the user experience. At the same time, due to the shape of the resistor disk 2, the influence of lead resistance can be eliminated, avoiding errors caused by current lead resistance and contact resistance, thereby improving the accuracy, stability and ease of use of the resistor box.

[0029] The following points should be noted in this article:

[0030] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0031] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A braking resistor box, comprising a base (1), a resistor disk (2), and a top cover (3), characterized in that: The number of resistor disks (2) is multiple, and the multiple resistor disks (2) are stacked together. The resistor disk (2) located at the lower end is fixedly installed on the upper end of the base (1). The top cover (3) is snapped onto the upper end of the resistor disk (2) located at the upper end. The resistor disks (2) located at the upper and lower ends are detachably provided on both sides and near their rear ends. Multiple connecting plates (9) are detachably provided on both sides of the multiple resistor disks (2).

2. The braking resistor box according to claim 1, characterized in that: Multiple resistor slots (4) are equally spaced inside the resistor disks (2). The upper resistor disk (2) has locking slots (5) on both sides and at both ends. The lower sides of the top cover (3) are fixedly provided with positioning frames (6). The two positioning frames (6) are fixedly provided with locking blocks (7) on the outside and at both ends. The four locking blocks (7) are respectively locked into the corresponding locking slots (5).

3. A braking resistor box according to claim 1, characterized in that: Multiple connecting slots (10) are equally spaced on both sides of the multiple resistor disks (2), and through holes (11) are provided on the multiple limiting plates (8) and connecting plates (9).

4. A braking resistor box according to claim 1, characterized in that: Each of the multiple retaining plates (8) and connecting plates (9) has a threaded fastening bolt (12) on one side. The multiple fastening bolts (12) pass through the corresponding through holes (11) and are threaded into the connecting hole groove (10).

5. A braking resistor box according to claim 1, characterized in that: Both of the two retaining plates (8) are fixedly provided with retaining protrusions (13) on their inner sides and near their lower ends. The two retaining protrusions (13) are respectively inserted into the connecting hole groove (10) of the resistor disk (2) located at the lower end.

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