CN212516743U - High-stability grounding resistor - Google Patents
High-stability grounding resistor Download PDFInfo
- Publication number
- CN212516743U CN212516743U CN202021323598.5U CN202021323598U CN212516743U CN 212516743 U CN212516743 U CN 212516743U CN 202021323598 U CN202021323598 U CN 202021323598U CN 212516743 U CN212516743 U CN 212516743U
- Authority
- CN
- China
- Prior art keywords
- resistor
- electrode
- high stability
- shallow groove
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Details Of Resistors (AREA)
Abstract
The utility model discloses a ground resistance of high stability relates to the resistor field. The motor comprises a resistor and electrodes arranged at two ends of the resistor, wherein fixing holes are formed in four corners of each electrode, and fixing bolts and nuts are arranged to connect the motor and fix the resistor; the electrode is characterized in that a shallow groove which is the same as the contact surface of the resistor is arranged on the inner side of the electrode and in contact with the resistor, a silver pad is arranged in the shallow groove, and the thickness of the silver pad is slightly larger than that of the shallow groove. Through the improvement to resistance inner structure, realize the improvement of ground resistance stability, realize using under various use scenes and application environment and all can guarantee the inseparable combination of resistance and electrode and can not appear the problem that ground resistance became invalid, realize the effect of ground resistance high stability.
Description
Technical Field
The utility model relates to a resistor field especially relates to a ground resistance of high stability.
Background
The motor train unit is provided with the grounding resistor, the grounding resistor is used for preventing abnormal abrasion of the grounding brush, electric corrosion of the bearing and uniform grounding current, and the motor train unit adopts the grounding resistor, so that when the maximum load current is applied, even if the resistor body or the insulation is locally damaged, the resistor cannot be opened. And minimum values required by the capacity, the resistance, the frame insulation and the like of the resistor are designed according to the principle so as to realize the small and light structure. The grounding resistor is used in a protective grounding circuit of a vehicle body and has the function of limiting the current of a track and the earth to flow into the vehicle body. Meanwhile, the grounding resistor is also a decoupling resistor for protecting grounding and working grounding.
The motor train unit is inevitably vibrated in the running process, the stability of parts such as screws is impressed due to vibration, the loosening and other problems of fastening screws can occur along with the length of the side of time, and the grounding resistance is caused to fail or the contact resistance is increased due to the fact that the parts are not tightly contacted, and other parts are damaged due to overheating when current passes through. Therefore, a high-stability resistor is needed, which can enable the ground resistor to face different external environments during operation, still maintain high stability, and avoid failure and other problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a ground resistance of high stability, through the improvement to resistance inner structure, realize the improvement of ground resistance stability, realize using under various use scenes and application environment homoenergetic and can guarantee closely combining of resistance and electrode and can not appear the problem that ground resistance became invalid, realize the effect of ground resistance high stability.
In order to realize the technical effect, the utility model discloses a high-stability grounding resistor, which comprises a resistor and electrodes arranged at two ends of the resistor, wherein four corners of the electrodes are provided with fixing holes, and the electrodes are also provided with fixing bolts and nuts for connecting a motor and fixing the resistor; the electrode is characterized in that a shallow groove which is the same as the contact surface of the resistor is arranged on the inner side of the electrode and in contact with the resistor, a silver pad is arranged in the shallow groove, and the thickness of the silver pad is slightly larger than that of the shallow groove.
Further, the fixing hole comprises sinking sections arranged at two ends of the motor and through hole sections connected with the sinking sections.
Furthermore, an insulating sleeve is further arranged on the lower end of the lower end.
Further, wherein an anti-loosening ring is further arranged between the nut and the electrode, the number of the anti-loosening rings is two, the anti-loosening rings are arranged inside the sinking section, and the contact surface of the anti-loosening rings and the nut is higher than the upper surface of the electrode.
Furthermore, the upper surface and the lower surface of the anti-loosening ring are provided with wedge-shaped bulges arranged in an annular array.
Further, the resistor comprises at least two resistor cores and a radiating fin arranged between any two connected resistor cores.
Further, the resistor core is a silicon carbide resistor core, the radiating fins are metal radiating fins, and the outer diameter of each metal radiating fin is larger than that of the silicon carbide resistor core.
The beneficial effects of the utility model reside in that:
the electrode sheet is provided with the shallow grooves with the same contact surfaces of the resistors, and the silver gaskets are arranged in the shallow grooves, so that the resistors can generate deformation and force for extruding the resistors and the electrodes after assembly, the fixing bolt and the nut for connecting the electrodes can constantly keep the optimal fastening force, and looseness is prevented from being generated in the use process. In addition, when the bolt and the nut are fixed, the double anti-loosening rings are arranged, the anti-loosening rings can be arranged in the sinking sections on the electrodes to be prevented from being influenced by the outside, the top ends of the anti-loosening rings protrude out of the surfaces of the electrodes, extrusion force between the nut and the anti-loosening rings can be guaranteed, the anti-loosening rings are shared on a smaller area, pressure is larger, loosening is not easy to happen, and stability of the ground resistance is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a cross-sectional view of the fixing bolt, the electrode and the insulating sheath according to the present invention.
Fig. 3 is a cross-sectional view of the electrode and resistor portion of the present invention.
Fig. 4 is a schematic structural view of the electrode shallow groove of the present invention.
Fig. 5 is a partial cross-sectional view of the fixing bolt of the present invention, and the electrode and insulating sheath.
Fig. 6 is a structural view of the check ring of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
a high-stability grounding resistor comprises a resistor 1 and electrodes 2 arranged at two ends of the resistor, wherein fixing holes 3 are formed in four corners of each electrode, and fixing bolts 4 and nuts 5 are arranged to connect a motor and fix the resistor; the inner side of the electrode is provided with a shallow groove 6 which has the same shape with the contact surface of the resistor, a silver pad 7 is arranged in the shallow groove, and the thickness of the silver pad is slightly larger than that of the shallow groove.
The fixing hole 3 includes sinking sections 31 disposed at both ends of the motor and a through hole section 32 connected to the sinking sections.
And an insulating sleeve 8 is also arranged on the fixing bolt at the inner sides of the two electrodes, and two ends of the insulating sleeve are arranged at the sinking section.
The resistor comprises at least two resistor cores 11 and radiating fins 12 arranged between any two connected resistor cores. The resistor core is a silicon carbide resistor core, the radiating fins are metal radiating fins, and the outer diameter of each metal radiating fin is larger than that of the silicon carbide resistor core.
Example two:
a high-stability grounding resistor comprises a resistor 1 and electrodes 2 arranged at two ends of the resistor, wherein fixing holes 3 are formed in four corners of each electrode, and fixing bolts 4 and nuts 5 are arranged to connect a motor and fix the resistor; the inner side of the electrode is provided with a shallow groove 6 which has the same shape with the contact surface of the resistor, a silver pad 7 is arranged in the shallow groove, and the thickness of the silver pad is slightly larger than that of the shallow groove.
The fixing hole 3 includes sinking sections 31 disposed at both ends of the motor and a through hole section 32 connected to the sinking sections. And an insulating sleeve 8 is also arranged on the fixing bolt at the inner sides of the two electrodes, and two ends of the insulating sleeve are arranged at the sinking section.
And two anti-loosening rings 9 are arranged between the nut and the electrode, the anti-loosening rings are arranged inside the sinking section, and the contact surfaces of the anti-loosening rings and the nut are higher than the upper surface of the electrode. The upper surface and the lower surface of the anti-loosening ring are provided with wedge-shaped bulges arranged in an annular array.
The resistor comprises at least two resistor cores 11 and radiating fins 12 arranged between any two connected resistor cores. The resistor core is a silicon carbide resistor core, the radiating fins are metal radiating fins, and the outer diameter of each metal radiating fin is larger than that of the silicon carbide resistor core.
The above embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (7)
1. The utility model provides a ground resistance of high stability, includes resistance (1) and sets up in electrode (2) at resistance both ends, its characterized in that: fixing holes (3) are formed in four corners of the electrode, and fixing bolts (4) and nuts (5) are further arranged to connect the motor and fix the resistor; the electrode is characterized in that a shallow groove (6) which is the same as the contact surface of the resistor is arranged on the inner side of the electrode and on the surface of the contact surface of the resistor, a silver pad (7) is arranged in the shallow groove, and the thickness of the silver pad is slightly larger than that of the shallow groove.
2. The high stability ground resistor of claim 1, wherein: the fixing hole (3) comprises sinking sections (31) arranged at two ends of the motor and through hole sections (32) connected with the sinking sections.
3. The high stability ground resistor of claim 2, wherein: still be equipped with insulating cover (8), insulating cover establishes on the fixing bolt of two electrode inboards, just insulating cover both ends set up in the section sinks.
4. The high stability ground resistor of claim 2, wherein: still be equipped with between nut and the electrode and prevent loose ring (9), it is two to prevent loose the ring setting quantity, just the check ring sets up in it is inside to sink the section, and check ring and nut contact one face is higher than the upper surface of electrode.
5. The high stability ground resistor of claim 4, wherein: the upper surface and the lower surface of the anti-loosening ring are provided with wedge-shaped bulges arranged in an annular array.
6. The high stability ground resistor of claim 1, wherein: the resistor comprises at least two resistor cores (11) and radiating fins (12) arranged between any two connected resistor cores.
7. The high stability ground resistor of claim 6, wherein: the resistor core is a silicon carbide resistor core, the radiating fins are metal radiating fins, and the outer diameter of each metal radiating fin is larger than that of the silicon carbide resistor core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021323598.5U CN212516743U (en) | 2020-07-08 | 2020-07-08 | High-stability grounding resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021323598.5U CN212516743U (en) | 2020-07-08 | 2020-07-08 | High-stability grounding resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212516743U true CN212516743U (en) | 2021-02-09 |
Family
ID=74436763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021323598.5U Active CN212516743U (en) | 2020-07-08 | 2020-07-08 | High-stability grounding resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212516743U (en) |
-
2020
- 2020-07-08 CN CN202021323598.5U patent/CN212516743U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20150087806A (en) | Earth bold | |
| CN212516743U (en) | High-stability grounding resistor | |
| JP4114986B2 (en) | Anti-corrosion bracket | |
| CN113949222B (en) | Variable frequency motor shaft current protective structure | |
| CN212155468U (en) | Axle sleeve forging for inferior forging briquetting loader transmission system | |
| CN212225741U (en) | Nut with self-locking structure | |
| JP2747894B2 (en) | Shunt wire for electrode connection | |
| CN220692777U (en) | Waterproof double-hook self-locking bus duct | |
| US4552638A (en) | Electrode assembly having improved current distribution for use in an electrolytic reduction cell | |
| CN215835070U (en) | Prevent chaotic power cord subassembly of circuit | |
| CN219809387U (en) | Gear cover with heat conduction structure | |
| CN214627470U (en) | High-efficient heat dissipation circuit board of multilayer | |
| CN213839232U (en) | Embedded slotting occlusion type locknut assembly | |
| JPH09161890A (en) | Electric connecting device having conductive connecting structure, and connecting surface polishing tool therefor | |
| CN217421825U (en) | Spring screw with insulating function | |
| CN212485051U (en) | Small-size low-weight grounding resistor | |
| CN215600935U (en) | New energy automobile pencil is with fixed buckle | |
| CN216691775U (en) | Fastener with high temperature resistance | |
| CN219811749U (en) | Split type collecting ring | |
| CN214698727U (en) | Special bolt of bearing surface antiskid structure | |
| CN220108309U (en) | Flexible circuit board with copper-aluminum structure | |
| CN218769497U (en) | MOSFET device for industrial power supply | |
| CN219204255U (en) | Bearing position ceramic plating structure for preventing shaft current | |
| CN214012561U (en) | Corrosion-resistant sensor cable with good heat dissipation performance | |
| CN214204816U (en) | Electric vehicle controller cable seal structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |