CN109741892B - Special potentiometer for train scotch - Google Patents
Special potentiometer for train scotch Download PDFInfo
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- CN109741892B CN109741892B CN201910082752.XA CN201910082752A CN109741892B CN 109741892 B CN109741892 B CN 109741892B CN 201910082752 A CN201910082752 A CN 201910082752A CN 109741892 B CN109741892 B CN 109741892B
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Abstract
The invention discloses a special potentiometer for a train ratchet, which comprises a shell, wherein the shell comprises a bottom plate and side plates wound on the bottom plate, the bottom plate of the shell is connected with a rotating shaft in a rotating fit manner, resistance wires which are arranged and formed are arranged around the rotating shaft on the bottom plate, a group of resistance contact belts and resistance contact pieces are uniformly distributed around the rotating shaft, and the resistance wires and the resistance contact pieces are connected in a grouping fit manner; the rotating shaft is fixedly connected with a rotating disc plate in a matching way, and one side of the bottom of the rotating disc plate is connected with an electric brush which is in rotating contact with the resistance contact strip and the resistance contact piece in a matching way; and a group of leading-out terminals are arranged on the side plate of the shell, and the resistance wire is connected with an external controller in a matching way through the leading-out terminals. The invention has the advantages of high temperature resistance, good stability, good insulativity, good moisture resistance and greatly reduced failure frequency of the electric brush.
Description
Technical Field
The invention relates to a special potentiometer for a train with a ratchet, and belongs to the technical field of electrical equipment.
Background
The potentiometer is a resistance element which is provided with three leading-out terminals and the resistance value of which can be adjusted according to a certain change rule. Potentiometers are generally composed of a resistive body and a movable brush. When the brush moves along the resistor, a resistance value or a voltage having a certain relationship with the displacement amount is obtained at the output terminal. The potentiometer can be used as a three-terminal element or a two-terminal element. The latter may be regarded as a variable resistor. The potentiometer is required to be specially made, the brush of the potentiometer cannot fail after sliding for 50 ten thousand times under the electrified condition, the brush of the potentiometer cannot fail after sliding for 100 ten thousand times under the unpowered condition, but the existing brush of the potentiometer fails after sliding for 30 ten thousand times, and the failure frequency is too high. In addition, the maximum power of the existing potentiometer is 4 kilowatts to 5 kilowatts under the action of traction force, and the potentiometer is easy to flashover.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a special potentiometer for a train ratchet vehicle, which can solve the problem that the brush of the existing potentiometer has high failure frequency.
In order to achieve the purpose, the invention adopts the following technical scheme: a potentiometer special for a train ratchet vehicle comprises a shell, wherein the shell comprises a bottom plate and side plates wound on the bottom plate, a rotating shaft is connected to the bottom plate of the shell in a rotating fit mode, resistance wires which are formed in an arranged mode are arranged on the periphery of the rotating shaft on the bottom plate, a group of resistance contact belts and resistance contact pieces are uniformly distributed on the periphery of the rotating shaft, and the resistance wires and the resistance contact pieces are connected in a matched mode in a grouping mode; the rotating shaft is fixedly connected with a rotating disc plate in a matching way, and one side of the bottom of the rotating disc plate is connected with an electric brush which is in rotating contact with the resistance contact strip and the resistance contact piece in a matching way; and a group of leading-out terminals are arranged on the side plate of the shell, and the resistance wire is connected with an external controller in a matching way through the leading-out terminals.
Furthermore, an insulating sealing material is arranged in the shell, and the resistance wire is insulated and sealed on a bottom plate of the shell by the insulating sealing material.
Furthermore, a central tube is arranged on the bottom plate of the shell, a bearing is connected in the central tube in a matching mode, and the rotating shaft is connected in the central tube through the bearing in a matching mode and penetrates through the bottom plate of the shell.
Further, the bottom cooperation of casing bottom plate is connected with a gasket, and the downside cooperation joint of gasket has a circlip, circlip is in the gasket chucking cooperation in the pivot.
Furthermore, the upper part of the rotary plate is provided with a rotary plate fixing sleeve, and the rotary plate fixing sleeve is used for locking and sleeving the rotary plate on the rotating shaft through a locking fixing part.
Furthermore, a semicircular key is arranged above the rotating shaft and positioned on the rotating disc plate fixing sleeve, and the rotating shaft is matched with an external driving device in a rotating and clamping manner through the semicircular key.
Furthermore, an electric brush fixing seat is connected to one side of the rotary plate in a matched mode, a spring is arranged on the electric brush fixing seat, and the electric brush is connected to the electric brush fixing seat in a matched mode and is connected with the spring in an elastic matched mode.
Furthermore, a group of bushings which are matched and connected with an external installation structural body are uniformly distributed on a bottom plate of the shell.
Compared with the prior art, the invention has the advantages that through the matching of all the parts, the turntable plate and the rotating shaft rotate together under the driving of the external driving device, and the electric brush also rotates together with the turntable plate and the rotating shaft. Because the resistance wire connected with the leading-out terminal is insulated and sealed on the bottom plate, and the resistance wire is connected with the resistance contact piece in a grouping matching way, when the electric brush moves along the resistance contact strip and the resistance contact piece, the leading-out terminal can obtain a resistance value or voltage which has a certain relation with the displacement, and through the arrangement of the resistance wire, the resistance contact strip and the resistance contact piece, the resistance value can reach 500 megaohms, and the resistance wire, the resistance contact strip and the resistance contact piece are high in high temperature resistance and high in power load capacity; and the brush has the advantages of high precision, good stability, reliable contact and the like, and the failure frequency of the brush is greatly reduced. Finally, the invention has the advantages of high precision, good stability, reliable contact and the like, and has high temperature resistance, strong power load capacity, good insulativity and resistance value reaching 500 megaohms under the environment state of proper 100 percent of the periphery, and the failure frequency of the electric brush is greatly reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an axial cross-sectional view at one angle of FIG. 1;
fig. 3 is an isometric cross-sectional view of fig. 1 at another angle.
In the figure: 1. the device comprises a shell, 2, a rotating shaft, 3, a resistance contact belt, 4, a resistance contact piece, 5, a resistance wire, 6, a turntable plate, 7, a brush, 8, a leading-out terminal, 9, an insulating sealing material, 10, a bearing, 11, a gasket, 12, an elastic retainer ring, 13, a turntable plate fixing sleeve, 14, a locking fixing piece, 15, a brush fixing seat, 16, a spring, 17, a lining, 18, an insulating wiring board, 19, a fastening screw, 20, a central pipe, 21, a semicircular key, 22 and a nameplate.
Detailed Description
The technical solutions in the implementation of the present invention will be made clear and fully described below with reference to the accompanying drawings, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, the potentiometer special for a train ratchet vehicle provided by the embodiment of the invention comprises a shell 1, wherein the shell 1 comprises a bottom plate and side plates surrounding the bottom plate, the bottom plate of the shell 1 is connected with a rotating shaft 2 in a rotating fit manner, resistance wires 5 which are arranged and formed are arranged around the rotating shaft 2 on the bottom plate, a group of resistance contact belts 3 and resistance contact pieces 4 are uniformly distributed around the rotating shaft 2, and the resistance wires 5 and the resistance contact pieces 4 are connected in a grouping fit manner; a rotating disc plate 6 is fixedly connected to the rotating shaft 2 in a matched mode, and one side of the bottom of the rotating disc plate 6 is connected with an electric brush 7 in a matched mode, wherein the electric brush is in rotating contact with the resistance contact belt 3 and the resistance contact piece 4; an insulating wiring board 18 can be fixedly connected to a side plate of the shell 1 through a fastening screw 19, a group of leading-out terminals 8 are arranged on the insulating wiring board 18, and the resistance wire 5 is connected with an external controller in a matched mode through the leading-out terminals 8. Wherein, the bottom plate and the side plate can be enclosed into a square box body without a cover. The resistance contact belt 3 and the resistance contact piece 4 are both in a ring shape and surround the rotating shaft 2, the resistance contact piece 4 forms a small ring at the inner side, the resistance contact belt 3 forms a large ring at the outer side, the electric brush 7 simultaneously contacts with the resistance contact belt 3 and the resistance contact piece 4, and the control of the access resistance is realized by rotating to different positions. Considering that the conventional potentiometer generally has three terminals and a resistance element with a resistance value adjustable according to a certain variation rule, the number of the terminals 8 may be three. The side plates of the shell 1 can also be provided with a nameplate 22.
Further, an insulating sealing material 9 is arranged in the shell 1, and the resistance wire 5 is insulated and sealed on a bottom plate of the shell 1 by the insulating sealing material 9. Insulating sealing material 9 seals resistance wire 5 on the bottom plate by the insulation, can prevent that brush 7 from bumping by mistake, still can ensure that resistance wire 5 and resistance contact piece 4 are connected fixedly, guarantees that the resistance of final access is tightly decided by brush 7 pivoted position, and is more stable, more accurate. The provision of the insulating seal 9 can further improve the overall insulation.
Further, a central tube 20 is arranged on the bottom plate of the shell 1, a bearing 10 is connected in the central tube 20 in a matching mode, and the rotating shaft 2 is connected in the central tube 20 through the bearing 10 in a matching mode and penetrates through the bottom plate of the shell 1. The rotating shaft 2 can be rotatably connected to the bottom plate through the bearing 10 and the central tube 20, and the structure is simple and the friction is small.
Further, the bottom cooperation of casing 1 bottom plate is connected with a gasket 11, and the downside cooperation joint of gasket 11 has a circlip 12, circlip 12 is in gasket 11 chucking cooperation on the pivot 2.
Further, the upper part of the turntable plate 6 is provided with a turntable plate fixing sleeve 13, and the turntable plate fixing sleeve 13 locks and sleeves the turntable plate 6 on the rotating shaft 2 through a locking fixing piece 14. The rotary plate 6 can synchronously rotate or stop along with the rotating shaft 2, and the locking fixing piece 14 is preferably a pipe pin, so that the installation and the disassembly are convenient.
Further, a semicircular key 21 is arranged on the rotating shaft 2 above the rotating disc plate fixing sleeve 13, and the rotating shaft 2 is in rotating clamping fit with an external driving device through the semicircular key 21.
Further, an electric brush fixing seat 15 is connected to one side of the rotary plate 6 in a matched mode, a spring 16 is arranged on the electric brush fixing seat 15, and the electric brush 7 is connected to the electric brush fixing seat 15 in a matched mode and is connected with the spring 16 in an elastic matched mode. The brush 7 may be made of silver alloy. The addition of the spring 16 can ensure that the electric brush 7 is closely attached to the resistance contact strip 3 and the resistance contact piece 4 at any time, and further improves the contact reliability and stability.
Further, a group of bushings 17 used for being connected with an external mounting structure in a matched mode are uniformly distributed on the bottom plate of the shell 1. As shown in fig. 1, the bushing 17 comprises four mounting sleeves arranged on the base plate for enabling connection with an external mounting structure.
Before use, the rotating shaft 2 can be matched with an external driving device in a rotating and clamping mode through the semicircular key 21, and meanwhile, the leading-out terminal 8 is matched and connected with an external controller. In use, the turntable plate 6 rotates with the shaft 2 and the brushes 7 rotate with the shaft under the drive of the external drive device. Because the resistance wires 5 connected with the leading-out terminals 8 are insulated and sealed on the bottom plate, and the resistance wires 5 are connected with the resistance contact pieces 4 in a grouping matching way, when the electric brushes 7 move along the resistance contact belts 3 and the resistance contact pieces 4, the resistance value or voltage which has a certain relation with the displacement can be obtained at the leading-out terminals 8. Therefore, the resistance wire 5, the resistance contact strip 3 and the resistance contact piece 4 are arranged, so that the resistance value can reach 500 megaohms, and the high-temperature resistance and high-power load capacity are achieved. The position relation among the above-mentioned parts and the arrangement of insulating seal material 9, have guaranteed its better insulating nature, simultaneously, make it have high accuracy, stability good, contact advantages such as reliable, greatly reduced the frequency of failure of brush.
In conclusion, the potentiometer has the advantages of high precision, good stability, reliable contact and the like, is high-temperature resistant, has strong power load capacity and good insulativity, has the resistance value of 500 megaohms in a proper 100% environment state of the periphery, and greatly reduces the failure frequency of the electric brush.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (8)
1. The special potentiometer for the train pallet is characterized by comprising a shell (1), wherein the shell (1) comprises a bottom plate and side plates wound on the bottom plate, the bottom plate of the shell (1) is connected with a rotating shaft (2) in a rotating fit mode, resistance wires (5) which are formed in an arrayed mode are arranged on the periphery of the rotating shaft (2) on the bottom plate, a group of annular resistance contact belts (3) and resistance contact pieces (4) which are arranged in an annular mode are uniformly distributed on the periphery of the rotating shaft (2), and the resistance wires (5) are connected with the resistance contact pieces (4) in a grouping fit mode; a rotating disc plate (6) is fixedly connected to the rotating shaft (2) in a matched mode, and one side of the bottom of the rotating disc plate (6) is connected with an electric brush (7) which is in rotating contact with the resistance contact belt (3) and the resistance contact piece (4) in a matched mode; a group of leading-out terminals (8) are arranged on a side plate of the shell (1), and the resistance wire (5) is connected with an external controller in a matched mode through the leading-out terminals (8).
2. The potentiometer according to claim 1, wherein an insulating sealing material (9) is arranged in the shell (1), and the resistance wire (5) is insulated and sealed on a bottom plate of the shell (1) by the insulating sealing material (9).
3. The special potentiometer for train trips according to claim 1, wherein a central tube (20) is arranged on the bottom plate of the housing (1), a bearing (10) is connected in the central tube (20) in a matching manner, and the rotating shaft (2) is connected in the central tube (20) in a matching manner through the bearing (10) and penetrates through the bottom plate of the housing (1).
4. The potentiometer according to claim 1, wherein a gasket (11) is connected to the bottom of the bottom plate of the housing (1) in a matching manner, a resilient collar (12) is clamped and connected to the lower side of the gasket (11) in a matching manner, and the resilient collar (12) tightly clamps and fits the gasket (11) on the rotating shaft (2).
5. The potentiometer according to claim 1, wherein a turntable plate fixing sleeve (13) is arranged at the upper part of the turntable plate (6), and the turntable plate fixing sleeve (13) is used for locking and sleeving the turntable plate (6) on the rotating shaft (2) through a locking fixing member (14).
6. The potentiometer according to claim 5, wherein a semicircular key (21) is arranged on the rotating shaft (2) above the fixed sleeve (13) of the rotating plate, and the rotating shaft (2) is in rotating clamping fit with an external driving device through the semicircular key (21).
7. The potentiometer according to claim 1, wherein a side of the turntable plate (6) is connected with a brush fixing seat (15) in a matching manner, a spring (16) is arranged on the brush fixing seat (15), and the brush (7) is connected with the brush fixing seat (15) in a matching manner and is elastically connected with the spring (16).
8. The potentiometer according to claim 1, wherein a set of bushings (17) for matching and connecting with an external mounting structure are uniformly distributed on the bottom plate of the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910082752.XA CN109741892B (en) | 2019-01-29 | 2019-01-29 | Special potentiometer for train scotch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910082752.XA CN109741892B (en) | 2019-01-29 | 2019-01-29 | Special potentiometer for train scotch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109741892A CN109741892A (en) | 2019-05-10 |
| CN109741892B true CN109741892B (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910082752.XA Active CN109741892B (en) | 2019-01-29 | 2019-01-29 | Special potentiometer for train scotch |
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| Country | Link |
|---|---|
| CN (1) | CN109741892B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4295119A (en) * | 1979-03-12 | 1981-10-13 | Alps Electric Co., Ltd. | Rotary variable resistor |
| CN101075491B (en) * | 2006-05-19 | 2012-02-22 | Abb专利有限公司 | Potentiometer |
| CN202422896U (en) * | 2012-01-18 | 2012-09-05 | 杨文宏 | Potentiometer structure |
| CN105006324A (en) * | 2015-07-30 | 2015-10-28 | 成都中微电微波技术有限公司 | Wireless control rolling potentiometer |
| CN206293231U (en) * | 2016-12-19 | 2017-06-30 | 四川永星电子有限公司 | A kind of potentiometer |
-
2019
- 2019-01-29 CN CN201910082752.XA patent/CN109741892B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4295119A (en) * | 1979-03-12 | 1981-10-13 | Alps Electric Co., Ltd. | Rotary variable resistor |
| CN101075491B (en) * | 2006-05-19 | 2012-02-22 | Abb专利有限公司 | Potentiometer |
| CN202422896U (en) * | 2012-01-18 | 2012-09-05 | 杨文宏 | Potentiometer structure |
| CN105006324A (en) * | 2015-07-30 | 2015-10-28 | 成都中微电微波技术有限公司 | Wireless control rolling potentiometer |
| CN206293231U (en) * | 2016-12-19 | 2017-06-30 | 四川永星电子有限公司 | A kind of potentiometer |
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| Publication number | Publication date |
|---|---|
| CN109741892A (en) | 2019-05-10 |
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