CN214929684U - DC low-voltage trolley AC frequency conversion traction electric locomotive - Google Patents
DC low-voltage trolley AC frequency conversion traction electric locomotive Download PDFInfo
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- CN214929684U CN214929684U CN202023243104.5U CN202023243104U CN214929684U CN 214929684 U CN214929684 U CN 214929684U CN 202023243104 U CN202023243104 U CN 202023243104U CN 214929684 U CN214929684 U CN 214929684U
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- electric locomotive
- alternating current
- variable frequency
- traction electric
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Abstract
The utility model discloses a direct current low voltage stringing type alternating current variable frequency traction electric locomotive, which comprises a frame and a cab, wherein two damping chassis are arranged below the frame, one of the damping chassis is connected with a walking wheel through an active walking structure, the other damping chassis is connected with the other walking wheel through a passive walking structure, a circuit protector is arranged above the frame, the side edge of the circuit protector is provided with a spring base, a pantograph is arranged above the spring base, an alternating current transducer is arranged inside the frame and is connected with a variable frequency motor, the variable frequency motor is connected with a transmission box through a reducer, compared with the existing direct current motor, the direct current low voltage stringing type alternating current variable frequency traction electric locomotive is driven to run through the alternating current variable frequency motor, the speed change is fast, the response is fast, the regulation and control is nimble, convenient, installs circuit security device simultaneously, and the electric locomotive security is better.
Description
Technical Field
The utility model relates to an electric locomotive equipment field specifically is direct current low pressure overhead line formula alternating current frequency conversion traction electric locomotive.
Background
The traction electric locomotive is a traction equipment for rail vehicle transportation, and its power is characterized by that it utilizes traction motor to drive wheel and make it rotate, and utilizes the friction force between wheel and rail surface to make locomotive run on the rail.
The trolley locomotive obtains electric energy from a circuit by means of a pantograph. When the electric locomotive is running, the pantograph slides along the overhead line. The power supply mode of the trolley locomotive is that a high-voltage cable led by a central substation supplies a three-phase alternating current power supply for a traction substation, the three-phase alternating current power supply is subjected to voltage reduction by a transformer and then is sent to a converter device through a low-voltage cable, and the alternating current is converted into direct current. The positive pole of the direct current power supply is connected with the overhead line lead through a power supply cable, the connection point in the period becomes a power supply point, the negative pole of the direct current power supply is connected with the track through a return cable, and the corresponding connection point is called a return point.
The direct current low-voltage trolley traction electric locomotive on the current market adopts a direct current motor, and has the problems of low speed change efficiency and insufficient operation reliability when in use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a direct current low pressure overhead line formula exchanges frequency conversion traction electric locomotive to current adoption direct current motor's direct current low pressure overhead line formula traction motor when using on the existing market that proposes in solving above-mentioned background art, has the problem that the variable speed is inefficient, operational reliability is not enough.
The technical scheme of the utility model is realized like this: the direct-current low-voltage stringing type alternating-current variable-frequency traction electric locomotive comprises a frame and a cab, wherein two damping chassis are arranged below the frame, one of the damping chassis is connected with a walking wheel through an active walking structure, the other damping chassis is connected with the other walking wheel through a passive walking structure, a circuit protector is arranged above the frame, a spring base is arranged on the side edge of the circuit protector, a pantograph is arranged above the spring base, an alternating-current frequency converter is arranged inside the frame and is connected with a variable-frequency motor, the variable-frequency motor is connected with a transmission case through a speed reducer, the transmission case is connected with the active walking structure through a transmission connector, a fixing frame is arranged on the side edge of the transmission connector, and a heat dissipation grid is further arranged at the top of the frame, and an access door is arranged on the frame shell at the side edge of the alternating current frequency converter.
Preferably, an illuminating lamp is installed on the cab, and the damping chassis is electrically connected with the pantograph.
Preferably, the pantograph is electrically connected with the circuit protector, and the circuit protector is electrically connected with the ac frequency converter.
Preferably, the alternating current frequency converter is electrically connected with the variable frequency motor, the variable frequency motor is in transmission connection with the speed reducer, the speed reducer is in transmission connection with the transmission case, the transmission case is in transmission connection with the transmission connector, and the transmission connector is in transmission connection with the active walking structure.
Preferably, the heat dissipation grid is clamped with the top of the frame through a buckle.
Preferably, the access door and the frame are mounted together by a hinge.
Preferably, the access door is provided with a safety lock.
By adopting the technical scheme, the beneficial effects of the utility model are that:
this kind of direct current low pressure overhead line formula exchanges frequency conversion traction electric locomotive compares current direct current motor, drives through exchanging inverter motor and traveles, and the variable speed is fast, the response is fast, regulation and control is nimble, convenient, installs circuit security device simultaneously, and the electric locomotive security is better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a front view of the present invention;
fig. 2 is a right side view of the present invention;
fig. 3 is a partial sectional view of the present invention in a top view.
Wherein: 1. a frame; 2. a cab; 3. a shock absorbing chassis; 4. a traveling wheel; 5. an active walking structure; 6. a passive walking structure; 7. a circuit protector; 8. a spring mount; 9. a pantograph; 10. an AC frequency converter; 11. a variable frequency motor; 12. a speed reducer; 13. a transmission case; 14. a drive connector; 15. a fixed mount; 16. a heat dissipation grid; 17. an access door; 18. a safety lock; 19. an illuminating lamp.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, the direct current low voltage stringing type alternating current variable frequency traction electric locomotive comprises a frame 1 and a cab 2, two damping chassis 3 are arranged below the frame 1, one damping chassis 3 is connected with a walking wheel 4 through an active walking structure 5, the other damping chassis 3 is connected with the other walking wheel 4 through a passive walking structure 6, a circuit protector 7 is arranged above the frame 1, a spring base 8 is arranged on the side edge of the circuit protector 7, a pantograph 9 is arranged above the spring base 8, an alternating current frequency converter 10 is arranged inside the frame 1, the alternating current frequency converter 10 is connected with a variable frequency motor 11, the variable frequency motor 11 is connected with a transmission case 13 through a reducer 12, the transmission case 13 is connected with the active walking structure 5 through a transmission connector 14, a fixing frame 15 is arranged on the side edge of the transmission connector 14, the top of the frame 1 is also provided with a heat dissipation grid 16, and an access door 17 is arranged on the frame 1 shell at the side of the AC frequency converter 10.
Specifically, install light 19 on the driver's cabin 2, shock attenuation chassis 3 is connected with pantograph 9 electricity, sets up like this and is convenient for directly provide illumination power for light 19 by pantograph 9, through light 19, for the effect that this electric locomotive provided the illumination.
Specifically, the pantograph 9 is electrically connected with the circuit protector 7, and the circuit protector 7 is electrically connected with the alternating current frequency converter 10, so that the circuit protector 7 can provide protection for the electric power of the motorcycle, and the electric elements are prevented from being damaged when the electric power variation amplitude in the circuit is large.
Specifically, ac frequency converter 10 is connected with inverter motor 11 electricity, inverter motor 11 is connected with the transmission of reduction gear 12, reduction gear 12 is connected with transmission case 13 transmission, transmission case 13 is connected with transmission connector 14 transmission, transmission connector 14 is connected with the transmission of initiative walking structure 5, it can be through ac frequency converter 10 conversion DC power into alternating current power to set up like this, and for inverter motor 11 power supply, export power through reduction gear 12 by inverter motor 11, it rotates to drive transmission connector 14 through transmission case 13 by reduction gear 12, it rotates to drive initiative walking structure 5 through transmission connector 14, it rotates to drive walking wheel 4 by initiative walking structure 5, thereby drive this electric locomotive operation.
Specifically, the heat dissipation grid 16 is clamped to the top of the frame 1 by a fastener, so that the heat dissipation grid 16 can provide a heat dissipation function for electrical components in the frame 1.
Specifically, the access door 17 is mounted together with the frame 1 through a hinge, so that the arrangement is convenient for a worker to perform daily maintenance and overhaul on electrical components in the frame 1 through the access door 17.
Specifically, the safety lock 18 is installed on the access door 17, so that the safety of the device can be improved, and accidents caused by the fact that irrelevant personnel touch the internal circuit by mistake are avoided.
The working principle is as follows: the pantograph 9 is connected into an overhead line above the pantograph, when the electric locomotive runs, the pantograph 9 slides along the overhead line, the lower part of the electric locomotive contacts with a track by utilizing the travelling wheels 4 to form a loop, the direct current power input circuit protector 7 connected from the pantograph 9 plays a role of protecting the circuit through the circuit protector 7, then the direct current power is converted into the alternating current power through the alternating current frequency converter 10 and supplies power for the variable frequency motor 11, the variable frequency motor 11 outputs power through the speed reducer 12, the speed reducer 12 drives the transmission connector 14 to rotate through the transmission box 13, the driving travelling structure 5 is driven to rotate through the transmission connector 14, the travelling wheels 4 are driven to rotate by the driving travelling structure 5, and the electric locomotive runs.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. Direct current low pressure overhead line formula exchanges frequency conversion traction electric locomotive, its characterized in that includes: comprises a frame (1) and a cab (2), two damping chassis (3) are arranged below the frame (1), one of the damping chassis (3) is connected with a walking wheel (4) through an active walking structure (5), the other damping chassis (3) is connected with the other walking wheel (4) through a passive walking structure (6), a circuit protector (7) is arranged above the frame (1), a spring base (8) is arranged on the side edge of the circuit protector (7), a pantograph (9) is arranged above the spring base (8), an alternating-current frequency converter (10) is arranged inside the frame (1), the alternating-current frequency converter (10) is connected with a variable-frequency motor (11), the variable-frequency motor (11) is connected with a transmission case (13) through a speed reducer (12), the transmission case (13) with through transmission connector (14) with initiative walking structure (5) are connected, the side of transmission connector (14) is provided with mount (15), the top of frame (1) still is provided with radiator grille (16), exchange converter (10) side install access door (17) on frame (1) casing.
2. The direct current low voltage trolley alternating current variable frequency traction electric locomotive according to claim 1, characterized in that: an illuminating lamp (19) is installed on the cab (2), and the damping chassis (3) is electrically connected with the pantograph (9).
3. The direct current low voltage trolley alternating current variable frequency traction electric locomotive according to claim 1, characterized in that: the pantograph (9) is electrically connected with the circuit protector (7), and the circuit protector (7) is electrically connected with the alternating current frequency converter (10).
4. The direct current low voltage trolley alternating current variable frequency traction electric locomotive according to claim 1, characterized in that: the alternating current frequency converter (10) is electrically connected with the variable frequency motor (11), the variable frequency motor (11) is in transmission connection with the speed reducer (12), the speed reducer (12) is in transmission connection with the transmission box (13), the transmission box (13) is in transmission connection with the transmission connector (14), and the transmission connector (14) is in transmission connection with the active walking structure (5).
5. The direct current low voltage trolley alternating current variable frequency traction electric locomotive according to claim 1, characterized in that: the heat dissipation grille (16) is clamped with the top of the frame (1) through a buckle.
6. The direct current low voltage trolley alternating current variable frequency traction electric locomotive according to claim 1, characterized in that: the access door (17) and the frame (1) are mounted together through a hinge.
7. The direct current low voltage trolley alternating current variable frequency traction electric locomotive according to claim 1, characterized in that: and a safety lock (18) is arranged on the access door (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023243104.5U CN214929684U (en) | 2020-12-29 | 2020-12-29 | DC low-voltage trolley AC frequency conversion traction electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023243104.5U CN214929684U (en) | 2020-12-29 | 2020-12-29 | DC low-voltage trolley AC frequency conversion traction electric locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214929684U true CN214929684U (en) | 2021-11-30 |
Family
ID=79115974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023243104.5U Active CN214929684U (en) | 2020-12-29 | 2020-12-29 | DC low-voltage trolley AC frequency conversion traction electric locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214929684U (en) |
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2020
- 2020-12-29 CN CN202023243104.5U patent/CN214929684U/en active Active
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| GR01 | Patent grant | ||
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| CP02 | Change in the address of a patent holder |
Address after: 066000 No. 2 Caohai Road, Qinhuangdao Economic and Technological Development Zone, Hebei Province Patentee after: Qinhuangdao tiantuo Electric Locomotive Co.,Ltd. Address before: 066000 duzhuang industrial cluster East, Haigang District, Qinhuangdao City, Hebei Province Patentee before: Qinhuangdao tiantuo Electric Locomotive Co.,Ltd. |