CN203982932U - Rotation screw thread resistor - Google Patents
Rotation screw thread resistor Download PDFInfo
- Publication number
- CN203982932U CN203982932U CN201420244935.XU CN201420244935U CN203982932U CN 203982932 U CN203982932 U CN 203982932U CN 201420244935 U CN201420244935 U CN 201420244935U CN 203982932 U CN203982932 U CN 203982932U
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- CN
- China
- Prior art keywords
- resistor
- screw thread
- resistance wire
- resistance
- binding post
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a kind of rotation screw thread resistor, belongs to a kind of resistance that is applied to brake field.This rotation screw thread resistor, it comprises, resistance tube, resistance wire, binding post, described resistance wire helical arrangement is on resistance tube, and described resistance wire and binding post are electrically connected, and it is characterized in that: described resistance wire surface includes one deck high flame retardant coating.In addition, the steadiness in use occurring for resistor, the convenient and swift property problem in installation process, the present utility model people improves described support, on support, set up reinforcement, to ensure that resistor is in use more firm, there will not be mechanical breakdown.For more convenient in installation process, the connection of binding post adopts the mode of connection on, once, makes easier for installation quick.
Description
Technical field
The utility model relates to a kind of electronic devices and components, particularly relates to a kind of resistance that is applied to brake field.
Background technology
At present, many fields all need to brake with frequency converter, such as electrical equipment, elevator etc.But in braking procedure, due to effect of inertia, motor is stall at once not, will produce like this regenerated energy of feedback, and these energy must be consumed.Otherwise these regenerated energies will directly act on the direct current component of frequency converter, thereby frequency converter is caused to certain infringement.In prior art, common way is, at the two ends of frequency converter, brake resistance is set, and consumes regenerated energy by the heating of resistance.But at the high brake field of ask for something, very just carve for volume, the performance requirement of brake resistance.Need to be under certain volume, make brake resistance there is very large power, this cannot realize for most of resistors of the prior art.
Utility model patent CN201220125358.3 discloses a kind of screw thread braking resistor.It has overcome resistor power under certain volume in prior art by structural improvement cannot reach very large problem, described screw thread braking resistor packages is drawn together: resistance tube, resistance wire, binding post and retainer ring, described resistance wire is shape arrangement twist spatially, and the resistance wire that shape is arranged is twist wrapped on resistance tube, and described resistance wire and binding post are electrically connected.
But cube is little, power is large owing to wanting, therefore in use resistance wire often there will be i.e. rubescent, the hot phenomenon of high temperature.Because resistance wire is exposed on screwed pipe ectosome, have a strong impact on reliability and the fail safe of use.In addition, because resistance wire is exposed on screwed pipe ectosome, without any insulation processing, in use may occur that electric leakage, electric spark etc. cause the situation of mechanical disorder to occur.Therefore, although above-mentioned utility model patent can make brake resistance have very large power under certain volume, and be applied to equipment as higher in the brake request such as locomotive, elevator, but still there is above-described defect.
Summary of the invention
Technical problem to be solved in the utility model is: ensureing under certain volume, brake resistance to be had under very powerful prerequisite, ensure reliability and the fail safe of its use, particularly, solve its Insulation Problems, electric spark problem, thereby use resistor of the present utility model safer, reliable.
The present utility model people is through the discovery of concentrating on studies, existing, under certain volume, make brake resistance have on very powerful resistor to provide one deck high flame retardant coating can solve the problems of the technologies described above.
For this reason, the utility model provides a kind of rotation screw thread resistor, it comprises, resistance tube, resistance wire, binding post, described resistance wire helical arrangement is on resistance tube, described resistance wire and binding post are electrically connected, and it is characterized in that: described resistance wire surface includes one deck high flame retardant coating.
Described high flame retardant coating can use the conventional high flame retardant inorganic coating of selling in the market.The inorganic resistor that for example can use Shanghai Silicate Inst., Chinese Academy of Sciences to produce is sealed material, and PE-3 phosphate inorganic resistor is sealed coating, etc.As long as described coating can meet described performance.
Further, the surface of described resistance tube is provided with the helicla flute coordinating with screw thread resistance wire.Described resistance wire is positioned at described thread groove.
Further, described resistor also comprises retainer ring, so that fixed installation binding post.
Further, described resistance tube comprises the connecting portion that extend at main part and autonomous body two ends, and described binding post is fixed on described connecting portion by retainer ring.
Further, described resistor also comprises the support for fixing described resistor.
In addition, the steadiness in use occurring for resistor, the convenient and swift property problem in installation process, the present utility model people improves described support, on support, set up reinforcement, to ensure that resistor is in use more firm, there will not be mechanical breakdown.For more convenient in installation process, the connection of binding post adopts the mode of connection on, once, makes easier for installation quick.
To sum up, by resistance wire surface-coated one deck high flame retardant coating, can eliminate due to rubescent, the hot phenomenon due to resistance wire surface high-temp.Because resistance wire and air are isolated, can also the not oxidation by air of protective resistance silk, extend the useful life of resistance wire.In addition, because resistance wire surface-coated has high flame retardant coating, eliminate the electrostatic phenomenon producing in the use procedure of screw thread resistance, what is more important, because resistance wire surface-coated has high flame retardant coating, screwed pipe and resistance wire combine together, and screw thread resistance can be lived in the time using the central unexpected fracture of wire of resistance wire in effective interlock, does not allow resistance wire jump out, fall to and install in screw thread resistance cabinet, guarantee safety, otherwise make whole cabinet conduction, occur accident.
Brief description of the drawings
Fig. 1 is the stereogram of the utility model screw thread resistor one embodiment.
Fig. 2 is the schematic diagram of the resistance tube of screw thread resistor in Fig. 1.
Fig. 3 is the stereogram of an embodiment of the utility model screw thread resistor support.
Fig. 4 is the stereogram of the utility model screw thread resistor binding post connected mode.
Embodiment
Below in conjunction with accompanying drawing, the utility model screw thread resistor is elaborated.
As shown in Figure 1, it comprises: resistance tube 11, resistance wire 12, binding post 13, retainer ring 14 and coating 15.Resistance wire 12 is wrapped on resistance tube 11 spirally, and resistance tube 11 has the helicla flute coordinating with screw thread resistance wire 12, to resistance wire is stably fixed in described helicla flute.Coating 15 is coated on resistance wire 12 surfaces, can eliminate due to rubescent, the hot phenomenon due to resistance wire surface high-temp.Because resistance wire and air are isolated, can also the not oxidation by air of protective resistance silk, extend the useful life of resistance wire.In addition, because resistance wire surface-coated has high flame retardant coating, eliminate the electrostatic phenomenon producing in the use procedure of screw thread resistance, what is more important, because resistance wire surface-coated has high flame retardant coating, screwed pipe and resistance wire combine together, and screw thread resistance can be lived in the time using the central unexpected fracture of wire of resistance wire in effective interlock, does not allow resistance wire jump out, fall to and install in screw thread resistance cabinet, guarantee safety, otherwise make whole cabinet conduction, occur accident.
Binding post 13 passes through on retainer ring 14 1, is once connected with screw thread resistance wire, is convenient to install.
As shown in Figure 2, be the schematic diagram of the utility model resistance tube 11.
Resistance tube 11 comprises main part 21 and the autonomous body 21 extended connecting portions 22 in two ends.The surface of main part 21 offers helicla flute 23, and resistance wire 12 is positioned at helicla flute 23.Retainer ring 14 is fixed on the connecting portion 22 of resistance tube 11.
As shown in Figure 3, reinforcement 31 makes the utility model resistor more firm.Support adopts reinforcement, is conducive to intensity, and not bending when vibration, modification not, can keep consistency.
As shown in Figure 4, make the easier for installation quick of the utility model resistor by the mode of connection on retainer ring 14 1, once.
The utility model elaborates by above-mentioned explanation and embodiment, but should be understood that, described explanation and embodiment are illustrative, does not represent the restriction to the utility model screw thread resistor.Under spirit of the present utility model, those of ordinary skill in the art can make various improvement and change to the utility model screw thread resistor, and these improvement and change include in scope of the present utility model.Protection range of the present utility model is as the criterion with content and the equivalent thereof of appended claims.
Claims (6)
1. a rotation screw thread resistor, it comprises, resistance tube (11), resistance wire (12), binding post (13), described resistance wire (12) helical arrangement is on resistance tube (11), described resistance wire (12) is electrically connected with binding post (13), it is characterized in that: described resistance wire (12) surface includes one deck high flame retardant inorganic coating.
2. rotation screw thread resistor as claimed in claim 1, is characterized in that the surface of described resistance tube (11) is provided with the helicla flute (23) coordinating with screw thread resistance wire, and described resistance wire is positioned at described thread groove.
3. rotation screw thread resistor as claimed in claim 1, is characterized in that also comprising retainer ring (14), so that fixed installation binding post.
4. rotation screw thread resistor as claimed in claim 1, is characterized in that described resistance tube (11) comprises the connecting portion (22) that extend at main part (21) and autonomous body two ends.
5. rotation screw thread resistor as claimed in claim 1, is characterized in that described binding post (13) is fixed on described connecting portion by retainer ring.
6. the rotation screw thread resistor as described in one of claim 1-5, is characterized in that also comprising the support for fixing described resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244935.XU CN203982932U (en) | 2014-05-14 | 2014-05-14 | Rotation screw thread resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244935.XU CN203982932U (en) | 2014-05-14 | 2014-05-14 | Rotation screw thread resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203982932U true CN203982932U (en) | 2014-12-03 |
Family
ID=51980362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420244935.XU Expired - Fee Related CN203982932U (en) | 2014-05-14 | 2014-05-14 | Rotation screw thread resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203982932U (en) |
-
2014
- 2014-05-14 CN CN201420244935.XU patent/CN203982932U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20190514 |