CN211947739U - Internal combustion alternating current transmission rail grinding wagon - Google Patents
Internal combustion alternating current transmission rail grinding wagon Download PDFInfo
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- CN211947739U CN211947739U CN201922237871.6U CN201922237871U CN211947739U CN 211947739 U CN211947739 U CN 211947739U CN 201922237871 U CN201922237871 U CN 201922237871U CN 211947739 U CN211947739 U CN 211947739U
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- rail grinding
- grinding
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- internal combustion
- rail
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 64
- 230000005540 biological transmission Effects 0.000 title claims abstract description 29
- 239000000428 dust Substances 0.000 claims description 33
- 239000004575 stone Substances 0.000 claims description 13
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 43
- 239000010959 steel Substances 0.000 description 43
- 238000005498 polishing Methods 0.000 description 32
- 230000007547 defect Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Machines For Laying And Maintaining Railways (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The utility model relates to an internal combustion alternating current transmission rail grinding wagon, including first rail grinding wagon (1) and second rail grinding wagon (2), first rail grinding wagon (1) is connected with second rail grinding wagon (2), first rail grinding wagon (1) front end and second rail grinding wagon (2) rear end all are equipped with cab (3), first rail grinding wagon (1) and second rail grinding wagon (2) all are provided with power bogie (10), be equipped with permanent magnet traction motor (15) on power bogie (10), first rail grinding wagon (1) and second rail grinding wagon (2) all are equipped with internal combustion generating set drive arrangement, internal combustion generating set drive arrangement includes internal combustion generating set (6), internal combustion generating set (6) are connected with permanent magnet traction motor (15). The utility model discloses a two-way operation is realized in the marshalling of two cars, and the whole car is walked to walk and is adopted the alternating current transmission and adopt internal combustion generating set electricity generation + permanent-magnet machine drive operation.
Description
Technical Field
The utility model relates to a track traffic maintenance equipment especially relates to an internal combustion alternating current transmission rail grinding wagon.
Background
At present, a hydraulic or hydraulic transmission mode is generally adopted for the steel rail grinding wagon, the risk of fire caused by leakage of a hydraulic pipeline is increased due to the fact that a plurality of hydraulic pipelines are arranged under the wagon in the working process of the steel rail grinding wagon, and meanwhile, a gear shifting mechanism needs to be configured by adopting hydraulic or hydraulic transmission, so that operation of operators is not facilitated to be simplified.
In the overall arrangement, most of the prior steel rail grinding vehicles arrange a dust collecting device right above the grinding device, a dust collecting air duct is too short, and an air inlet pipe is bent by 90 degrees, so that the technical defects that the dust collecting effect is poor, the temperature of air flow in a box body of the dust collecting device is too high, a filter element is burnt and the like are caused.
Chinese patent No. ZL201210030165.4 discloses a hybrid rail grinding wagon, which is applied to rail grinding train operation with hybrid power in the field of large-scale rail engineering, and comprises: the rail grinding wagon comprises an internal combustion engine driven power car, an electric driven power car and more than one trailer, wherein a grinding device is installed on the trailer, and when the rail grinding wagon works in a power-on area or a tunnel area, the rail grinding wagon obtains electricity from a contact net through a pantograph of the electric driven power car, reduces the voltage through a transformer, rectifies and inverts the electricity into three-phase variable-frequency variable-voltage alternating current through a converter, and provides required power for a traction motor and the grinding device; the hybrid steel rail grinding wagon is switched to an internal combustion engine generator combined mode in a non-electricity zone, and power required by the running and grinding device of the hybrid steel rail grinding wagon is provided. The invention solves the technical problems of low operation and combustion efficiency, serious emission pollution and high use and maintenance cost of the prior grinding wagon, and ensures that the grinding wagon realizes full-section seamless operation in a current area, a non-current area and a tunnel area. However, the single hybrid power steel rail grinding vehicle adopted by the invention cannot realize bidirectional grinding operation; meanwhile, the invention adopts a power driving mode of alternating current motor speed regulation and reduction gear box and a hydraulic driving mode using internal combustion engine as power source, so the technical defects still exist and the improvement is needed.
The invention discloses a self-powered subway steel rail grinding wagon with patent number ZL201410028628.2, which is characterized in that a hydraulic transmission grinding wagon A1 and a hydraulic transmission grinding wagon A2 are connected through an automatic coupler to form a grinding wagon group, wherein the hydraulic transmission grinding wagon A1 performs rough grinding on a steel rail, the hydraulic transmission grinding wagon A2 performs fine grinding on the steel rail, the hydraulic transmission grinding wagon A1 and the hydraulic transmission grinding wagon A2 are identical in structure, the running direction of the hydraulic transmission grinding wagon A1 is forward, and the running direction of the hydraulic transmission grinding wagon A2 is backward. The whole rail head grinding machine adopts a hydraulic transmission mode, each section of the rail is provided with power, a grinding motor on a grinding device can be enabled to grind the surface of a rail head of a steel rail in the low-constant-speed operation process of 3-15 km/h, and the defects of wave-shaped abrasion of the steel rail, fat edges of the steel rail, saddle-shaped abrasion, welding seam depression, scale cracks and the like are eliminated, so that the outline of a working part of the rail head is improved. However, the invention adopts a double-vehicle combination mode of a coarse grinding A1 vehicle and a fine grinding A2 vehicle, which cannot realize bidirectional grinding operation; meanwhile, the hydraulic transmission mode adopted by the invention still has the technical defects, so the improvement is still needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical defect that above-mentioned current hybrid rail grinding wagon and the subway rail grinding wagon from electrified power exist, the utility model provides an internal combustion alternating current transmission rail grinding wagon, this grinding wagon are connected by first rail grinding wagon and the second rail grinding wagon that the overall arrangement is unanimous basically and are constituteed the double car marshalling form, can realize two-way operation, and this double car marshalling is put in order the car and is regarded as whole car power with the electric power that on-vehicle internal combustion generating set sent. Meanwhile, the double-train marshalling adopts an alternating current transmission mode, and a permanent magnet traction motor is adopted to drive the train to run; each section of the vehicle is provided with a set of ten grinding head steel rail grinding devices, and a permanent magnet grinding motor is adopted to drive grinding stones to grind the steel rails. The utility model discloses a technical scheme specifically as follows:
the utility model provides an internal combustion alternating current transmission rail grinding wagon, includes first rail grinding wagon and second rail grinding wagon, first rail grinding wagon with second rail grinding wagon is connected, first rail grinding wagon front end and second rail grinding wagon rear end all are equipped with the driver's cabin, first rail grinding wagon and second rail grinding wagon all are provided with power bogie, the last permanent magnet traction motor that is equipped with of power bogie, first rail grinding wagon and second rail grinding wagon all are equipped with internal combustion generating set drive arrangement, internal combustion generating set drive arrangement includes internal combustion generating set, internal combustion generating set with permanent magnet traction motor is connected.
Preferably, the first rail grinding wagon and the second rail grinding wagon are both provided with a non-powered bogie.
In any of the above aspects, it is preferable that the power bogie is a two-axle power bogie.
In any of the above aspects, it is preferable that the non-power bogie is a two-axle non-power bogie.
In any of the above schemes, preferably, the rail grinding devices are disposed in the middle of the first rail grinding wagon and the middle of the second rail grinding wagon, and the rail grinding devices are disposed between the power bogie and the non-power bogie.
In any of the above schemes, preferably, the rail polishing device adopts a ten-grinding-head rail polishing device, ten permanent magnet polishing motors are arranged on the ten-grinding-head rail polishing device, and the ten permanent magnet polishing motors are connected with the ten-grinding-head rail polishing device in a one-to-one correspondence manner.
In any of the above solutions, it is preferable that two of the ten-wheeler rail grinding devices form a twenty-wheeler rail grinding train set.
In any of the above schemes, preferably, the first rail grinding wagon includes a first frame, and the rail grinding device is connected to the first frame through four lift cylinders and two traction rods.
In any of the above schemes, preferably, the second rail grinding wagon includes a second frame, and the rail grinding device is connected to the second frame through four lift cylinders and two traction rods.
In any one of the above aspects, it is preferable that the rail grinding machine further comprises a dust collecting device, and the dust collecting device is respectively arranged at the rear end parts of the first rail grinding wagon and the second rail grinding wagon.
In any of the above schemes, preferably, the dust collecting device includes a dust collecting device box, the first rail grinding wagon and the second rail grinding wagon are both provided with a wagon body side wall, and the dust collecting device box and the wagon body side wall are welded into a whole.
In any of the above schemes, preferably, the two dust collecting device cases are arranged along the two vehicle body side walls in a left-right symmetrical manner.
In any of the above embodiments, it is preferable that a person passage is left at an intermediate position between the two dust collector cases.
In any of the above schemes, preferably, the two-shaft power bogie is provided with two permanent magnet traction motors and two axle gear boxes for respectively driving two axles of the two-shaft power bogie.
In any one of the above schemes, preferably, the steel rail polishing device includes a permanent magnet polishing motor and a grinding stone, the permanent magnet polishing motor is connected with the grinding stone, and the permanent magnet polishing motor is used for driving the grinding stone to polish the steel rail.
In any of the above schemes, preferably, the rail polishing device includes a rail polishing driving device, the rail polishing driving device includes a polishing motor control cabinet, a polishing inverter, a high-voltage cabinet and a rectifying cabinet, and the permanent magnet polishing motor is respectively electrically connected with the polishing inverter, the high-voltage cabinet, the rectifying cabinet and the internal combustion generator set in sequence through the polishing motor control cabinet.
In any of the above schemes, preferably, ten polishing frequency converters are arranged in the polishing motor control cabinet, and ten permanent magnet polishing motors are respectively connected with the ten polishing frequency converters in a one-to-one correspondence manner.
Ten permanent magnet grinding motors on the steel rail grinding device are respectively driven by ten grinding frequency converters in the grinding motor control cabinet, the grinding inverter outputs alternating current with constant voltage and adjustable frequency of 60-120 HZ, and the permanent magnet grinding motors are driven to rotate at the rotating speed of 3600-7200 RPM so as to drive the grinding stones to grind the steel rails.
In any of the above schemes, preferably, the internal combustion generator set driving device includes a traction inverter, a high-voltage cabinet and a rectifier cabinet, and the permanent magnet traction motor is respectively and electrically connected with the traction inverter, the high-voltage cabinet, the rectifier cabinet and the internal combustion generator set in sequence.
Compared with the prior art, the utility model beneficial effect be:
1. the rail grinding device is respectively arranged between the power bogie and the non-power bogie of the two cars, so that the distance between the cars is further reduced, and the rail grinding car has better curve operation performance;
2. the dust collecting device is arranged at the rear end parts of the two cars, so that the dust collecting pipeline is longer, the temperature of air flow entering the dust collecting device is further reduced, meanwhile, the transition of the dust collecting pipeline is more gradual, and the dust collecting efficiency is greatly improved;
3. the dust collecting devices are symmetrically arranged left and right, and a personnel channel is reserved between the two dust collecting devices, so that the through design of the whole machine is realized, and the ergonomic performance is better;
4. the transmission mode of alternating current transmission and a permanent magnet traction motor is adopted, so that the steel rail grinding wagon is high in transmission efficiency, energy-saving, environment-friendly and low in failure rate, and the maintenance cost of the steel rail grinding wagon in the whole life cycle is lower; the utility model can adjust the running speed steplessly no matter in self-running or operation, and does not need to take off, engage and shift gears, thus the operation is more convenient;
5. the vehicle is driven by a permanent magnet motor during traveling and grinding, and a vehicle traveling hydraulic driving system and a steel rail grinding hydraulic driving system are not adopted, so that the risk of fire caused by hydraulic oil leakage is greatly reduced;
6. grinding inverters with constant output voltage and adjustable frequency of 60-120 HZ are adopted, each grinding inverter drives a permanent magnet grinding motor, grinding stone can rotate at 3600-7200 RPM (revolution per minute) to grind the steel rail, and therefore the rotating speed of the grinding motors can be adjusted according to the type and the degree of the steel rail damage, and the optimal grinding effect is achieved;
7. the whole vehicle of the utility model adopts two-section vehicle marshalling, has compact structure, and the axle weight and the vehicle size meet various circuit requirements; the drivers' cabs are arranged at the front and the back of the two vehicles, so that the vehicle can run in two directions during self-running and grinding operation.
Drawings
Figure 1 is a front elevational view of a preferred embodiment of an internal combustion ac powered rail grinding wagon according to the present invention.
Figure 2 is a top plan view of the overall structure of a preferred embodiment of an internal combustion ac powered rail grinding wagon according to the present invention.
Figure 3 is a schematic structural view of a preferred embodiment of a power truck for an internal combustion ac electric rail grinding wagon according to the present invention.
Figure 4 is a schematic diagram of a preferred embodiment of a powertrain in an internal combustion ac electric rail grinding wagon according to the present invention.
Description of reference numerals:
1, a first steel rail grinding wagon; 2, a second steel rail grinding wagon; 3, a driver cab; 4, a rectifier cabinet; 5, a high-voltage cabinet; 6, an internal combustion generator set; 7, polishing the inverter; 8, polishing the motor control cabinet; 9 a dust collecting device; 10 power bogie; 11 a traction inverter; 12 steel rail grinding devices; 13 a non-powered bogie; 14 permanent magnet grinding motor; 15 a permanent magnet traction motor; a 16-axle gearbox.
Detailed Description
The preferred technical solution of the internal combustion alternating current driven rail grinding wagon is described in detail below with reference to fig. 1-4:
the utility model provides an internal combustion alternating current transmission rail grinding wagon, includes first rail grinding wagon 1 and second rail grinding wagon 2, first rail grinding wagon 1 is connected with second rail grinding wagon 2, 1 front end of first rail grinding wagon and 2 rear ends of second rail grinding wagon all are equipped with cab 3, first rail grinding wagon 1 and second rail grinding wagon 2 all are provided with power bogie 10, are equipped with permanent magnet traction motor 15 on the power bogie 10, and first rail grinding wagon 1 and second rail grinding wagon 2 all are equipped with the internal combustion generating set drive arrangement, internal combustion generating set drive arrangement includes internal combustion generating set 6, and internal combustion generating set 6 is connected with permanent magnet traction motor 15.
The first rail grinding wagon 1 and the second rail grinding wagon 2 are both provided with a non-powered bogie 13.
The power truck 10 employs a two-axle power truck. The non-power bogie 13 is a two-shaft non-power bogie.
The middle parts of the first steel rail grinding wagon 1 and the second steel rail grinding wagon 2 are respectively provided with a steel rail grinding device 12, and the steel rail grinding devices 12 are arranged between the power bogie 10 and the non-power bogie 13.
The steel rail grinding device 12 adopts a ten-grinding-head steel rail grinding device, ten permanent magnet grinding motors 14 are arranged on the ten-grinding-head steel rail grinding device, and the ten permanent magnet grinding motors 14 are connected with the ten-grinding-head steel rail grinding device in a one-to-one correspondence manner.
The two ten-grinding-head steel rail grinding devices form a twenty-grinding-head steel rail grinding vehicle set.
The first rail grinding wagon 1 comprises a first frame, and the rail grinding device 12 is connected with the first frame through four lifting cylinders and two traction rods.
The second rail grinding wagon 2 comprises a second carriage, to which the rail grinding device 12 is connected via four lifting cylinders and two draw bars.
Comprises a dust collecting device 9, wherein the dust collecting device 9 is respectively arranged at the rear end parts of the first steel rail grinding wagon 1 and the second steel rail grinding wagon 2. Dust collector 9 includes the dust collector box, and first rail grinding wagon 1 and second rail grinding wagon 2 all are equipped with the car body side wall, the dust collector box with car body side wall welding is as an organic whole, two the dust collector box is followed two the car body side wall is bilateral symmetry and arranges two personnel's passageway is left to the intermediate position of dust collector box.
And two permanent magnet traction motors 15 and two axle gear boxes 16 are arranged on the two-axle power bogie and are used for respectively driving two axles of the two-axle power bogie.
The steel rail grinding device 12 comprises a grinding stone, a permanent magnet grinding motor 14 is connected with the grinding stone, and the permanent magnet grinding motor 14 is used for driving the grinding stone to grind the steel rail.
The internal combustion generator set driving device comprises a traction inverter 11, a high-voltage cabinet 5 and a rectifier cabinet 4, and a permanent magnet traction motor 15 is respectively and sequentially electrically connected with the traction inverter 11, the high-voltage cabinet 5, the rectifier cabinet 4 and the internal combustion generator set 6.
The utility model discloses whole car uses the electric power that on-vehicle internal combustion generating set 6 sent as whole car power. The utility model discloses an alternating current drive mode adopts permanent magnet traction motor 15 drive vehicle to walk the line.
The utility model discloses walk capable theory of operation: the running of the whole machine adopts an alternating current transmission mode, and adopts a driving mode of generating electricity by an internal combustion generator set and driving the running of a permanent magnet motor. Specifically, the vehicle provides AC1150V power through the internal combustion generator set 6, AC1150V power from the internal combustion generator set 6 is rectified into DC1500V power through the rectifier cabinet 4, then the DC1500V power is sent to the traction inverter 11 through the high-voltage cabinet 5, the DC1500 power is output to 4 permanent magnet traction motors 15 on two power bogies 10 after being inverted by two inverter modules of the traction inverter 11, and the permanent magnet traction motors 15 drive axles of the power bogies 10 through an axle gear box 16, so that the whole vehicle is driven to run at the speed of 0-80 km/h or at the set constant speed of the polishing operation speed (2-16 km/h).
The utility model discloses the theory of operation of polishing: the polishing head of the steel rail polishing device 12 is driven by a permanent magnet polishing motor 14. Specifically, ten permanent magnet grinding motors 14 on the steel rail grinding device 12 are respectively driven by ten frequency converters in the grinding electrical control cabinet 8, the grinding inverter 7 outputs alternating current with constant voltage and adjustable frequency of 60-120 HZ, and the permanent magnet grinding motors 14 are driven to rotate at the rotating speed of 3600-7200 RPM so as to drive grinding stones to grind the steel rails.
The above embodiments are merely preferred embodiments, wherein the components and the connection relations involved are not limited to the above described embodiments, and the arrangement and the connection relations of the components in the preferred embodiments may be arbitrarily arranged and combined to form a complete technical solution.
Claims (18)
1. The utility model provides an internal combustion alternating current transmission rail grinding wagon, includes first rail grinding wagon (1) and second rail grinding wagon (2), first rail grinding wagon (1) is connected with second rail grinding wagon (2), first rail grinding wagon (1) front end and second rail grinding wagon (2) rear end all are equipped with cab (3), first rail grinding wagon (1) and second rail grinding wagon (2) all are provided with power bogie (10), a serial communication port, be equipped with permanent magnet traction motor (15) on power bogie (10), first rail grinding wagon (1) and second rail grinding wagon (2) all are equipped with internal combustion generator set drive arrangement, internal combustion generator set drive arrangement includes internal combustion generator set (6), internal combustion generator set (6) are connected with permanent magnet traction motor (15).
2. An internal combustion ac electric drive rail grinding wagon according to claim 1, wherein the first rail grinding wagon (1) and the second rail grinding wagon (2) are each provided with a non-powered bogie (13).
3. An internal combustion ac electric drive rail sander as set forth in claim 1, wherein the power truck (10) is a two-axle power truck.
4. An internal combustion ac electric drive rail sander as set forth in claim 2, wherein the non-powered truck (13) is a two-axle non-powered truck.
5. An internal combustion ac electric drive rail grinding wagon according to claim 2, wherein the rail grinding devices (12) are provided in the middle of the first rail grinding wagon (1) and in the middle of the second rail grinding wagon (2), the rail grinding devices (12) being arranged between the power bogie (10) and the non-power bogie (13).
6. The internal combustion alternating current transmission rail grinding wagon of claim 5, wherein the rail grinding device (12) adopts a ten-wheelhead rail grinding device, the ten-wheelhead rail grinding device is provided with ten permanent magnet grinding motors (14), and the ten permanent magnet grinding motors (14) are connected with the ten-wheelhead rail grinding device in a one-to-one correspondence manner.
7. The internal combustion ac electric drive rail grinding wagon of claim 6 wherein two of said ten-wheeler rail grinding devices form a twenty-wheeler rail grinding wagon.
8. An internal combustion ac electric drive rail grinding wagon according to claim 5, wherein the first rail grinding wagon (1) comprises a first frame, the rail grinding device (12) being connected to said first frame by means of four lifting cylinders and two traction rods.
9. An internal combustion ac electric drive rail grinding wagon according to claim 5, wherein the second rail grinding wagon (2) comprises a second carriage to which the rail grinding device (12) is connected by means of four lift cylinders and two draw bars.
10. An internal combustion ac electric drive rail grinding wagon according to claim 1, comprising a dust collecting device (9), the dust collecting device (9) being arranged at the rear end of the first rail grinding wagon (1) and the second rail grinding wagon (2), respectively.
11. The diesel ac electric rail grinding wagon according to claim 10, wherein the dust collector (9) comprises a dust collector box, and the first rail grinding wagon (1) and the second rail grinding wagon (2) are provided with a wagon body side wall, and the dust collector box is welded to the wagon body side wall.
12. The diesel ac powered rail sander of claim 11, wherein two of said dust collector housings are arranged in bilateral symmetry along two of said body side walls.
13. An internal combustion ac powered rail grinding vehicle as set forth in claim 12 wherein a personnel access is provided intermediate said dust collector housings.
14. An internal combustion ac electric drive rail sander as set forth in claim 3, wherein said two-axle power truck is provided with two permanent magnet traction motors (15) and two axle gearboxes (16) for driving the two axles of said two-axle power truck, respectively.
15. An internal combustion ac electric drive rail grinding wagon according to claim 6, wherein the rail grinding apparatus (12) comprises a grinding stone, and a permanent magnet grinding motor (14) is connected to the grinding stone, the permanent magnet grinding motor (14) being adapted to drive the grinding stone to grind the rail.
16. The internal combustion alternating current transmission rail grinding wagon of claim 15, wherein the rail grinding device (12) comprises a rail grinding driving device, the rail grinding driving device comprises a grinding motor control cabinet (8), a grinding inverter (7), a high voltage cabinet (5) and a rectifier cabinet (4), and the permanent magnet grinding motor (14) is respectively and sequentially electrically connected with the grinding inverter (7), the high voltage cabinet (5), the rectifier cabinet (4) and the internal combustion generator set (6) through the grinding motor control cabinet (8).
17. The internal combustion ac electric drive rail grinding wagon of claim 16, wherein ten grinding frequency converters are provided in the grinding motor control cabinet (8), and ten permanent magnet grinding motors (14) are connected to the ten grinding frequency converters in a one-to-one correspondence, respectively.
18. The internal combustion alternating current transmission rail grinding wagon according to claim 1, wherein the internal combustion generator set driving device comprises a traction inverter (11), a high-voltage cabinet (5) and a rectifier cabinet (4), and the permanent magnet traction motor (15) is respectively and sequentially electrically connected with the traction inverter (11), the high-voltage cabinet (5), the rectifier cabinet (4) and the internal combustion generator set (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922237871.6U CN211947739U (en) | 2019-12-13 | 2019-12-13 | Internal combustion alternating current transmission rail grinding wagon |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922237871.6U CN211947739U (en) | 2019-12-13 | 2019-12-13 | Internal combustion alternating current transmission rail grinding wagon |
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| CN211947739U true CN211947739U (en) | 2020-11-17 |
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| CN201922237871.6U Active CN211947739U (en) | 2019-12-13 | 2019-12-13 | Internal combustion alternating current transmission rail grinding wagon |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455751A (en) * | 2019-12-13 | 2020-07-28 | 中国铁建高新装备股份有限公司 | A kind of internal combustion AC electric drive rail grinding car |
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2019
- 2019-12-13 CN CN201922237871.6U patent/CN211947739U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455751A (en) * | 2019-12-13 | 2020-07-28 | 中国铁建高新装备股份有限公司 | A kind of internal combustion AC electric drive rail grinding car |
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