CN202688807U - Hybrid power steel rail grinding wagon - Google Patents
Hybrid power steel rail grinding wagon Download PDFInfo
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- CN202688807U CN202688807U CN 201220045591 CN201220045591U CN202688807U CN 202688807 U CN202688807 U CN 202688807U CN 201220045591 CN201220045591 CN 201220045591 CN 201220045591 U CN201220045591 U CN 201220045591U CN 202688807 U CN202688807 U CN 202688807U
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Abstract
The utility model discloses a hybrid power steel rail grinding wagon applied to operation of the hybrid power steel rail grinding wagon in the field of large railway engineering. The hybrid power steel rail grinding wagon comprises an internal combustion engine drive power vehicle, an electric drive power vehicle and more than one trailer, wherein a grinding device is mounted on the trailer. The hybrid power steel rail grinding wagon obtains electricity from a contact net through a pantograph of the electric drive power vehicle when working in electric regions or tunnel regions, and the electricity is inverted into a three-phase variable voltage variable frequency alternating current after being subjected to voltage reduction through a transformer and rectified through a converter, so that the required power can be provided for a traction motor and the grinding device; and the hybrid power steel rail grinding wagon is switched to an internal combustion engine and power generator combination mode in non-electric regions, so that the required power can be provided for the running of the grinding wagon and the grinding device. The technical problems of low operation and combustion efficiency, high emission pollution and high use and maintenance costs of the conventional grinding wagon are solved and the purpose of all-road section seamless operation of the grinding wagon in the electric regions, the non-electric regions and the tunnel regions is achieved.
Description
Technical field
The utility model relates to a kind of maintain road vehicle that is applied to the railway engineering field, especially a kind ofly is applied to the rail grinding train that large-scale track engineering field has hybrid power.
Background technology
What all adopt at home and abroad the rail grinding machine now is to provide power resources by internal combustion engine-generating set for car load, with internal combustion engine as the vehicle of power source in operation process particularly in the tunneling operation process, a large amount of toxic gases and dust bring very large injury to operating personnel healthy, the waste gas of arranging and polishing dust also are difficult to discharge the tunnel, can make engine shutdown when serious, reduce operating efficiency; Petroleum resources worsening shortages and price are soaring year by year in addition, and use cost is significantly increased.
The internal combustion engine of existing rail grinding machine adopts diesel engine as power source, mainly has the technical problem of following aspect:
1, diesel engine institute waste air can cause engine overheat, causes engine shutdown when serious, has reduced operating efficiency.
2, the discharging of diesel exhaust pollutes air, particularly serious harm operating personnel's life and health safety when the enclosed environment operations such as tunnel.
3, in addition diesel engine diesel combustion efficient is low in the course of the work, combustion rate only has about 40%, and oil is non-renewable resources, becomes now day by day rare, price is unprecedented soaring year by year, causes the grinding machine use cost constantly to increase.
The utility model content
The purpose of this utility model provides a kind of hybrid rail grinding wagon device, this device solves existing rail grinding machine operating efficiency low, exhaust emission is serious, efficiency of combustion is low, and the high technical problem of operation and maintenance cost.
In order to realize above-mentioned utility model purpose, the utility model specifically provides a kind of technic relization scheme of hybrid rail grinding wagon, a kind of hybrid rail grinding wagon, comprise: the internal combustion engine drive power car, driven by power power car and the above trailer of a joint, sanding apparatus is installed on the trailer, when hybrid rail grinding wagon is worked between electric region or Close Tunnel, pantograph by the driven by power power car is from the contact net power taking, through transformer pressure-reducing, and through the current transformer rectification, be reverse into the alternating current of three phase variable frequency transformation, for traction electric machine and sanding apparatus provide required power; When hybrid rail grinding wagon is worked at non-Electric region, switch to the oil-electric engine integrated mode, for traveling and the sanding apparatus of hybrid rail grinding wagon provides required power.
Further improvement as a kind of hybrid rail grinding wagon technical scheme of the utility model, be provided with sanding apparatus on internal combustion engine drive power car and/or the driven by power power car, sanding apparatus is arranged on the bottom of internal combustion engine drive power car and/or driven by power power car car body.
Further improvement as a kind of hybrid rail grinding wagon technical scheme of the utility model, the internal combustion engine drive power car comprises the first internal combustion engine drive power car and the second internal combustion engine drive power car, and the first internal combustion engine drive power car, trailer, driven by power power car and the internal combustion engine drive power car of being connected connect successively.
Further improvement as a kind of hybrid rail grinding wagon technical scheme of the utility model, transformer on the driven by power power car comprises auxiliary isolating transformer, main isolating transformer and main transformer, current transformer on the driven by power power car comprises main convertor and AuCT, the driven by power power car also comprises bogie, car body forms, fire fighting water system, the polishing hydraulic system, the traction electric machine ventilation fan, switchboard, dust arrester, air compressor machine assembling district, body ventilation system, washroom and brake assembling district, bogie and fire fighting water system are arranged on the bottom that car body forms, the polishing hydraulic system, the traction electric machine ventilation fan, switchboard, dust arrester, air compressor machine assembling district, body ventilation system, washroom and brake assembling district are arranged on the inside that car body forms.
Further improvement as a kind of hybrid rail grinding wagon technical scheme of the utility model, the relative front and rear that forms at the car body of driven by power power car is provided with the traction electric machine ventilation fan, and two cover car body ventilation systems relatively are arranged on car body and form relatively anterior two side.
As the further improvement of a kind of hybrid rail grinding wagon technical scheme of the utility model, between the traction electric machine ventilation fan of the relative front and rear that car body forms, be disposed with body ventilation system, air compressor machine assembling district, dust arrester, main transformer, main convertor, auxiliary isolating transformer, switchboard, AuCT and main isolating transformer.
Further improvement as a kind of hybrid rail grinding wagon technical scheme of the utility model, have between electricity or Close Tunnel the driven by power power car by pantograph from the 25KV overhead current collection, through after step-down, rectification and the inversion, switchboard on the driven by power power car is divided into three tunnel supply lines again, one the tunnel is used for walking system, another road is used for the polishing operation system, and one the tunnel is used for auxiliary power supply system again; The electric power system of hybrid rail grinding wagon is connected respectively to the interconnection switch of internal combustion engine drive power car and driven by power power car by two interconnections, electric power system is switched by interconnection switch, when having electricity, contact net switches to the current transformer end of driven by power power car, switch to the internal combustion engine generator group end of internal combustion engine drive power car during without electricity at contact net, start the power supply of internal combustion engine generator group.
Further improvement as a kind of hybrid rail grinding wagon technical scheme of the utility model, main convertor on the driven by power power car comprises traction convertor and polishing current transformer, four traction electric machines of traction convertor control, traction convertor is to the alternating current of traction electric machine output variable-frequency variable-voltage, the electric pressure of output AC electricity is 1400V, and frequency is adjustable between 0--200Hz; Traction electric machine is operated in PWM (Pulse Width Modulation, pulse width modulation) waveform powering mode.
Further improvement as a kind of hybrid rail grinding wagon technical scheme of the utility model, the polishing current transformer is controlled respectively polishing motor more than two and the hydraulic pump motor more than, the polishing motor starts successively with 380V voltage and 60Hz frequency respectively, all starts the long-term work pattern that is transitioned into again 600V voltage and 120Hz frequency after finishing; The polishing motor operation is at PWM waveform powering mode.
As the further improvement of a kind of hybrid rail grinding wagon technical scheme of the utility model, AuCT is the auxiliary equipment power supply of the air compressor machine, dryer, air-conditioner, electric heater, cooling blower, dedusting fan and the exhaust blower that comprise on the hybrid rail grinding wagon.
By implementing the technical scheme of a kind of hybrid rail grinding wagon of above-mentioned the utility model, have following technique effect:
1, the utlity model has hybrid power source, both can pass through the internal combustion engine power taking of self, also can be from the direct power taking of contact net;
2, the utility model adopts the power drive mode of speed regualtion of AC motor+reduction gear box, and can work in again by internal combustion engine is the hydraulic-driven pattern of power source, makes grinding machine realize the seamless operation of system-wide section at electric region, non-Electric region, Close Tunnel;
3, the utility model has not only satisfied environmental requirement but also has improved the operating efficiency of rail grinding machine.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that the structure of a kind of specific embodiment of the utility model hybrid rail grinding wagon forms schematic diagram;
Fig. 2 is the structural representation of a kind of specific embodiment the first internal combustion engine drive power car of the utility model hybrid rail grinding wagon;
Fig. 3 is the structural representation of a kind of specific embodiment trailer of the utility model hybrid rail grinding wagon;
Fig. 4 is the structural representation of a kind of specific embodiment driven by power of the utility model hybrid rail grinding wagon power car;
Fig. 5 is the structural representation of a kind of specific embodiment the second internal combustion engine drive power car of the utility model hybrid rail grinding wagon;
Fig. 6 is the connecting structure for electrical equipment schematic diagram of a kind of specific embodiment of the utility model hybrid rail grinding wagon;
Fig. 7 is the structural representation front view of a kind of specific embodiment driven by power of the utility model hybrid rail grinding wagon power car;
Fig. 8 is the structural representation top view of a kind of specific embodiment driven by power of the utility model hybrid rail grinding wagon power car;
Among the figure: 1-driven by power power car, 2-the first internal combustion engine drive power car, 3-the second internal combustion engine drive power car, the 4-trailer, the 101-bogie, the 102-car body forms, 103-fire fighting water system, 104-sanding apparatus, the 105-hydraulic system of polishing, 106-traction electric machine ventilation fan, the 107-switchboard, 108-assists isolating transformer, 109-master's isolating transformer, the 110-main transformer, 111-dust arrester, 112-air compressor machine assembling district, the 113-body ventilation system, the 114-washroom, 115-brake assembling district, 116-main convertor, the 117-AuCT, the 118-pantograph, 119-traction electric machine, 120-sidewall.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
To as shown in the accompanying drawing 8, provided the specific embodiment of a kind of hybrid rail grinding wagon of the utility model such as accompanying drawing 1, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The specific embodiment of a kind of hybrid rail grinding wagon as shown in Figure 1 comprises: the marshalling of a series of trailers 4 that internal combustion engine drive power car, driven by power power car 1 and a joint are above.At the internal combustion engine drive power car internal combustion engine generator group is installed, by hydraulic pump drive motor (hydraulic pump motor), provides away action edge between non-Electric region, the internal combustion engine generator group also provides power for the polishing motor simultaneously.Sanding apparatus 104 is installed on the trailer 4, when hybrid rail grinding wagon is worked between electric region or Close Tunnel, pantograph 118 by being installed in driven by power power car 1 top is from the contact net power taking, through transformer pressure-reducing, and through the current transformer rectification, be reverse into the alternating current of three phase variable frequency transformation, for traction electric machine 119 and sanding apparatus 104 provide required power; Hybrid rail grinding wagon switches to the oil-electric engine integrated mode when the non-Electric region, for traveling and the sanding apparatus 104 of hybrid rail grinding wagon provides required power.Also can further be provided with sanding apparatus 104 on internal combustion engine drive power car and/or driven by power power car 1, sanding apparatus 104 is arranged on the bottom of internal combustion engine drive power car and/or driven by power power car 1 car body.As a kind of typical embodiment, the internal combustion engine drive power car of the hybrid rail grinding wagon shown in the accompanying drawing 1 comprises the first internal combustion engine drive power car 2 and 3 liang of joints of the second internal combustion engine drive power car compartment, lays respectively at head and the afterbody of hybrid rail grinding wagon.The first internal combustion engine drive power car 2, trailer 4, driven by power power car 1 and the internal combustion engine drive power car 3 of being connected connect successively.Except being provided with sanding apparatus 104, also played connection the first internal combustion engine drive power car 2 and driven by power power car 1 on the trailer 4, and the effect of expansion work and living facilities.Wherein, the structure of the first internal combustion engine drive power car 2, trailer 4, driven by power power car 1 and the second internal combustion engine drive power car 3 forms such as accompanying drawing 2 to shown in the accompanying drawing 5.Hybrid rail grinding wagon has multi power source, and namely the hydraulic-driven pattern of power drive mode and internal combustion engine generator group can be used between two power alternately.When hybrid rail grinding wagon is worked between electric region or Close Tunnel, by pantograph 118 from the power taking of 25KV contact net, through transformer pressure-reducing, the current transformer rectification, be reverse into the alternating current of three phase variable frequency transformation, for traction electric machine 119 and sanding apparatus 104 provide required drive; Hybrid rail grinding wagon switches to the oil-electric engine integrated mode by non-Electric region the time, for grinding machine provides traveling and the required power of polishing.
Shown in accompanying drawing 7 and 8, transformer on the driven by power power car 1 further comprises auxiliary isolating transformer 108, main isolating transformer 109 and main transformer 110, current transformer on the driven by power power car 1 comprises main convertor 116 and AuCT 117, driven by power power car 1 also comprises bogie 101, car body forms 102, fire fighting water system 103, polishing hydraulic system 105, traction electric machine ventilation fan 106, switchboard 107, dust arrester 111, air compressor machine assembling district 112, body ventilation system 113, washroom 114 and brake assembling district 115, bogie 101 and fire fighting water system 103 are arranged on car body and form 102 bottom, polishing hydraulic system 105, traction electric machine ventilation fan 106, switchboard 107, dust arrester 111, air compressor machine assembling district 112, body ventilation system 113, washroom 114 and brake assembling district 115 are arranged on car body and form 102 inside.Two traction electric machine ventilation fans 106 further are arranged on the relative front and rear of the car body composition 102 of driven by power power car 1, and two cover car body ventilation systems 113 relatively are arranged on car body and form 102 relatively anterior two sides 120.Form at car body between the traction electric machine ventilation fan 106 of 102 relative front and rear and be disposed with body ventilation system 113, air compressor machine assembling district 112, dust arrester 111, main transformer 110, main convertor 116, auxiliary isolating transformer 108, switchboard 107, AuCT 117 and main isolating transformer 109.
As shown in Figure 6, high-pressure system (comprising pantograph 118 and line breaker etc.), main transformer 110, main convertor 116, AuCT 117, main isolating transformer 109, auxiliary isolating transformer 108, filter reactor and traction electric machine 119 and other relevant device have formed the driven by power dynamical system of hybrid rail grinding wagon.The driven by power power car passes through pantograph 118 from the 25KV overhead current collection between electricity or Close Tunnel having, through after step-down, rectification and the inversion, switchboard on driven by power power car 1 107 is divided into three tunnel supply lines again, one the tunnel is used for walking system, another road is used for the polishing operation system, and one the tunnel is used for auxiliary power supply system again.The electric power system of hybrid rail grinding wagon is connected respectively to the interconnection switch of internal combustion engine drive power car and driven by power power car 1 by two interconnections.Wherein interconnection is connected to the interconnection switch of the first internal combustion engine drive power car 2 and the second internal combustion engine drive power car 3 simultaneously, and another root interconnection is connected to the interconnection switch of driven by power power car 1.Electric power system is switched by interconnection switch, switches to the current transformer end of driven by power power car 1 when contact net has electricity, switches to the internal combustion engine generator end of internal combustion engine drive power car during without electricity at contact net, starts the power supply of internal combustion engine generator group.Wherein, the internal combustion engine generator group adopts diesel generating set.
Pantograph, arrester, line breaker and transformer form net side high-pressure system, all adopt the ripe parts of electric locomotive, and the winding number of high-tension transformer and electric pressure, current range satisfy the demand of converter system; Traction convertor, polishing current transformer, AuCT form converter system; Traction electric machine 119, polishing motor and hydraulic pump motor form electric system.
The polishing current transformer is controlled respectively 48 polishing motor and the hydraulic pump motor more than 3, and the polishing motor adopts the 22KW motor, and the hydraulic pump motor adopts the 37KW motor, and it is adjustable that the Voltage-output grade exchanges 600V frequency 60--120Hz; The polishing motor starts successively with 380V voltage and 60Hz frequency respectively, all starts the long-term work pattern that is transitioned into again 600V voltage and 120Hz frequency after finishing; The polishing motor can work under PWM waveform power supply pattern.Choosing of motor of polishing need to be satisfied long-term work under the rotating speed that grinding wheel requires, and considers not only bearing radial force when motor selection, also bears simultaneously this factor of axial force.
AuCT 117 is the auxiliary equipment power supply of the air compressor machine, dryer, air-conditioner, electric heater, cooling blower, dedusting fan and the exhaust blower that comprise on the hybrid rail grinding wagon.The power reguirements of auxiliary equipment is the sinusoidal 50Hz of output AC, and three-phase 380V/220V voltage, output capacity are pressed 200KVA and considered.The illumination of car load and control power acquisition are powered with direct current 24V.
The described hybrid rail grinding wagon of the utility model specific embodiment provides power from the contact net power taking of 25KV for grinding machine operation and traveling on electric railway; Switch to internal combustion engine generator group mode on the vehicle by changeover switch, for grinding machine operation and traveling provide power; Adopt driven by power and internal combustion engine generator group to drive the control method that dual mode freely switches; The polishing motor adopts low constant speed polishing and the transducer drive technology under driven by power.Therefore, hybrid rail grinding wagon has hybrid power source, both can be from the direct power taking of contact net, thereby adopt the power drive mode of speed regualtion of AC motor+reduction gear box, can adopt again internal combustion engine is the hydraulic-driven pattern of power source, make rail grinding machine realize seamless operation in the system-wide section of electric region, non-Electric region, Close Tunnel, not only satisfy environmental requirement but also improved grinding efficiency.
The above only is preferred embodiment of the present utility model, is not the utility model is done any pro forma restriction.Although the utility model discloses as above with preferred embodiment, yet is not to limit the utility model.Any those of ordinary skill in the art, do not breaking away from the technical solutions of the utility model scope situation, all can utilize method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore; every content that does not break away from technical solutions of the utility model; any simple modification of above embodiment being done according to technical spirit of the present utility model, be equal to replacements, equivalence changes and modify, all still belong in the scope that technical solutions of the utility model protect.
Claims (10)
1. a hybrid rail grinding wagon is characterized in that, comprising: internal combustion engine drive power car, driven by power power car (1) and the above trailer (4) of a joint are equipped with sanding apparatus (104) on the described trailer (4).
2. a kind of hybrid rail grinding wagon according to claim 1, it is characterized in that: be provided with sanding apparatus (104) on described internal combustion engine drive power car and/or the driven by power power car (1), described sanding apparatus (104) is arranged on the bottom of internal combustion engine drive power car and/or driven by power power car (1) car body.
3. a kind of hybrid rail grinding wagon according to claim 1 and 2, it is characterized in that: described internal combustion engine drive power car comprises the first internal combustion engine drive power car (2) and the second internal combustion engine drive power car (3), and described the first internal combustion engine drive power car (2), trailer (4), driven by power power car (1) and the internal combustion engine drive power car (3) of being connected connect successively.
4. a kind of hybrid rail grinding wagon according to claim 3, it is characterized in that: the transformer on the driven by power power car (1) comprises auxiliary isolating transformer (108), main isolating transformer (109) and main transformer (110), current transformer on the driven by power power car (1) comprises main convertor (116) and AuCT (117), described driven by power power car (1) also comprises bogie (101), car body forms (102), fire fighting water system (103), polishing hydraulic system (105), traction electric machine ventilation fan (106), switchboard (107), dust arrester (111), air compressor machine assembling district (112), body ventilation system (113), washroom (114) and brake assembling district (115), described bogie (101) and fire fighting water system (103) are arranged on the bottom that car body forms (102), described polishing hydraulic system (105), traction electric machine ventilation fan (106), switchboard (107), dust arrester (111), air compressor machine assembling district (112), body ventilation system (113), washroom (114) and brake assembling district (115) are arranged on the inside that car body forms (102).
5. a kind of hybrid rail grinding wagon according to claim 4, it is characterized in that: the relative front and rear that forms (102) at the car body of described driven by power power car (1) is provided with traction electric machine ventilation fan (106), and two cover car body ventilation systems (113) relatively are arranged on car body and form (102) relatively anterior two side (120).
6. a kind of hybrid rail grinding wagon according to claim 5 is characterized in that: form at described car body between the traction electric machine ventilation fan (106) of relative front and rear of (102) and be disposed with body ventilation system (113), air compressor machine assembling district (112), dust arrester (111), main transformer (110), main convertor (116), auxiliary isolating transformer (108), switchboard (107), AuCT (117) and main isolating transformer (109).
7. according to claim 1, the described a kind of hybrid rail grinding wagon of arbitrary claim in 2,4,5,6, it is characterized in that: have between electricity or Close Tunnel the driven by power power car by pantograph (118) from the 25KV overhead current collection, through after step-down, rectification and the inversion, switchboard (107) on driven by power power car (1) is divided into three tunnel supply lines again, one the tunnel is used for walking system, another road is used for the polishing operation system, and one the tunnel is used for auxiliary power supply system again; The electric power system of hybrid rail grinding wagon is connected respectively to the interconnection switch of internal combustion engine drive power car and driven by power power car (1) by two interconnections.
8. a kind of hybrid rail grinding wagon according to claim 7, it is characterized in that: the main convertor (116) on the driven by power power car (1) comprises traction convertor and polishing current transformer, described traction convertor control four traction electric machines (119), traction convertor is to the alternating current of traction electric machine (119) output variable-frequency variable-voltage, the electric pressure of output AC electricity is 1400V, and frequency is adjustable between 0--200Hz; Described traction electric machine (119) is operated in pulse-width modulation PWM waveform powering mode.
9. a kind of hybrid rail grinding wagon according to claim 8 is characterized in that: described polishing current transformer is controlled respectively polishing motor more than two and the hydraulic pump motor more than.
10. it is characterized in that according to claim 8 or 9 described a kind of hybrid rail grinding wagons: described AuCT (117) is the auxiliary equipment power supply of the air compressor machine, dryer, air-conditioner, electric heater, cooling blower, dedusting fan and the exhaust blower that comprise on the hybrid rail grinding wagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220045591 CN202688807U (en) | 2012-02-13 | 2012-02-13 | Hybrid power steel rail grinding wagon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220045591 CN202688807U (en) | 2012-02-13 | 2012-02-13 | Hybrid power steel rail grinding wagon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202688807U true CN202688807U (en) | 2013-01-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220045591 Expired - Lifetime CN202688807U (en) | 2012-02-13 | 2012-02-13 | Hybrid power steel rail grinding wagon |
Country Status (1)
| Country | Link |
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| CN (1) | CN202688807U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786734A (en) * | 2014-01-22 | 2014-05-14 | 宝鸡南车时代工程机械有限公司 | Self-powered metro steel rail grinding wagon |
| CN104742918A (en) * | 2015-03-30 | 2015-07-01 | 株洲时代电子技术有限公司 | Dual-power subway electric-drive steel rail grinding car and power switching method thereof |
| CN106087619A (en) * | 2016-07-19 | 2016-11-09 | 株洲时代电子技术有限公司 | A kind of invariable power steel rail grinding system |
| CN106120497A (en) * | 2016-07-19 | 2016-11-16 | 株洲时代电子技术有限公司 | A kind of invariable power steel rail grinding method |
-
2012
- 2012-02-13 CN CN 201220045591 patent/CN202688807U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786734A (en) * | 2014-01-22 | 2014-05-14 | 宝鸡南车时代工程机械有限公司 | Self-powered metro steel rail grinding wagon |
| CN103786734B (en) * | 2014-01-22 | 2016-10-05 | 宝鸡中车时代工程机械有限公司 | Self-powered rail of subway grinding machine |
| CN104742918A (en) * | 2015-03-30 | 2015-07-01 | 株洲时代电子技术有限公司 | Dual-power subway electric-drive steel rail grinding car and power switching method thereof |
| CN104742918B (en) * | 2015-03-30 | 2017-09-22 | 株洲时代电子技术有限公司 | Dual power source subway electric transmission rail grinding machine and its powershift method |
| CN106087619A (en) * | 2016-07-19 | 2016-11-09 | 株洲时代电子技术有限公司 | A kind of invariable power steel rail grinding system |
| CN106120497A (en) * | 2016-07-19 | 2016-11-16 | 株洲时代电子技术有限公司 | A kind of invariable power steel rail grinding method |
| CN106087619B (en) * | 2016-07-19 | 2018-01-09 | 株洲时代电子技术有限公司 | A kind of invariable power steel rail grinding system |
| CN106120497B (en) * | 2016-07-19 | 2018-01-09 | 株洲时代电子技术有限公司 | A kind of invariable power steel rail grinding method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20130123 |