CN214985326U - Internal combustion hydraulic transmission power pack for rail engineering vehicle - Google Patents
Internal combustion hydraulic transmission power pack for rail engineering vehicle Download PDFInfo
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- CN214985326U CN214985326U CN202121155304.7U CN202121155304U CN214985326U CN 214985326 U CN214985326 U CN 214985326U CN 202121155304 U CN202121155304 U CN 202121155304U CN 214985326 U CN214985326 U CN 214985326U
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Abstract
The utility model discloses a rail engineering vehicle is with internal combustion hydraulic transmission power package, including power package framework, integrated in the oil machine of power package framework, hydraulic transmission case, composite heat radiator, junction box, air purification unit, distribution valve gas circuit board, battery, muffler, empty filter, air compressor machine. The utility model provides a rail engineering vehicle is with internal combustion hydraulic drive power package adopts integrated installation and modularized design, has advantages such as space, can improve the installation accuracy under the interchangeability is good, the saving car.
Description
Technical Field
The utility model relates to a rail engineering vehicle technical field, concretely relates to rail engineering vehicle is with internal combustion hydraulic drive power package.
Background
A rail-bound work vehicle is usually composed of a drive train, an underframe, a shed, a bogie and auxiliary devices or work machines. At present, a power system of a rail engineering vehicle is generally dispersedly installed on a vehicle chassis and has the following defects:
1. the installation is inconvenient and the occupied space is large;
2. the mounting precision is low, the power system is easy to have a fault problem, and vibration and impact on the vehicle are easy to cause in the driving process;
3. the maintenance time required for the fault is long, and the maintenance cost is high.
In view of the above, it is desirable to provide an integrated power system to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a rail engineering vehicle is with internal combustion hydraulic drive power package adopts integrated installation and modular design, has advantages such as interchangeability is good, practice thrift under the car space, can improve the installation accuracy.
In order to solve the above problem, the technical scheme of the utility model is as follows:
the internal combustion hydraulic transmission power pack for the rail engineering vehicle comprises a power pack framework, wherein the power pack framework comprises a group of longitudinal beams, a group of cross beams, two diesel engine mounting seats, two hydraulic transmission box mounting seats, two radiator mounting seats, a plurality of wiring box mounting seats, an air purification unit mounting seat, a distribution valve air circuit board mounting seat, two storage battery box beams, two storage battery mounting seats, a silencer mounting seat, an air filter mounting seat, a filter mounting seat and a filter mounting seat, wherein the longitudinal beams are oppositely arranged, the group of cross beams are connected with the longitudinal beams and are oppositely arranged, the two diesel engine mounting seats are symmetrically distributed on the two groups of cross beams, the two radiator mounting seats are symmetrically distributed on the two groups of longitudinal beams, the plurality of wiring box mounting seats are arranged on side plates of the cross beams and the longitudinal beams, the air purification unit mounting seat is arranged on the lower surface of one of the one longitudinal beam, the distribution valve air circuit board mounting seat is arranged on the side surface of one of the other longitudinal beam, the two storage battery box beams are respectively welded below the storage battery mounting seats, the silencer mounting seats are arranged between one storage battery box beam and the filter mounting seat, The air compressor mounting seat is arranged on the lower surface of one longitudinal beam;
two ends of the longitudinal beam are respectively provided with a secondary shock absorber, and each secondary shock absorber is connected with the bottom of the frame through a bolt;
the air purification system also comprises a diesel engine correspondingly arranged on the diesel engine mounting seat, a hydraulic transmission case arranged on the hydraulic transmission case mounting seat, a composite radiator arranged on the radiator mounting seat, a junction box arranged on the junction box mounting seat, an air purification unit arranged on the air purification unit mounting seat, a distribution valve air circuit board arranged on the distribution valve air circuit board mounting seat, a storage battery arranged on the storage battery mounting seat, a silencer arranged on the silencer mounting seat, an air filter arranged on the air filter mounting seat and an air compressor arranged on the air compressor mounting seat;
the diesel engine and the hydraulic transmission case are combined to form a power unit of a power pack, and the power unit is connected with the corresponding diesel engine mounting seat and the corresponding hydraulic transmission case mounting seat through rubber shock absorbers;
the power unit further comprises a transfer case, the transfer case is connected to the belt pulley at the front end of the diesel engine through an elastic coupling and a transmission shaft, and a plurality of output ports are arranged to provide power for the air compressor and the oil pump.
Furthermore, the flywheel of the diesel engine is connected with the input end of the hydraulic transmission case through a stud bolt.
Further, the silencer and the air filter are installed on one side of a turbocharger of the diesel engine, and the composite radiator is installed on the other side of the turbocharger of the diesel engine.
Further, the composite radiator comprises an air cooling device and a water cooling device, wherein the air cooling device comprises at least two fans, and the fans are driven by a hydraulic motor; the water cooling device comprises an expansion water tank arranged above the hydraulic transmission case and a cooling pipeline connected with the expansion water tank, and the cooling pipeline is connected with the diesel engine, the hydraulic transmission case and the hydraulic oil tank.
Further, the storage battery is arranged on the other side of the composite radiator and is positioned between the silencer and the air filter.
Further, the air compressor machine install in transfer case one side, the delivery outlet on the belt pulley of air compressor machine and the transfer case passes through the belt and is connected, the air compressor machine air outlet pass through air pipeline with the air purification unit is connected, the air purification unit air outlet passes through rubber hose and supplies the wind for whole car.
Furthermore, the distribution valve air circuit board is connected with the whole vehicle brake system pipeline through a rubber hose.
Further, the junction box is installed in the junction of crossbeam and longeron, diesel engine, compound radiator, distribution valve gas circuit board, air purification unit's pencil integration are in on the junction box.
Furthermore, an aviation plug interface is arranged on the junction box and is connected with an electric system of the whole vehicle.
Compared with the prior art, the utility model provides a rail engineering vehicle is with internal combustion hydraulic transmission power package, beneficial effect lies in:
one, the utility model provides a rail engineering vehicle is with internal combustion hydraulic transmission power package adopts the two-stage shock attenuation, can effectively alleviate power package impact and the vibration to the vehicle.
Secondly, the internal combustion hydraulic transmission power pack for the rail engineering vehicle adopts a plug-in mode with an electric system of the whole vehicle, and is simple, convenient and quick in interchange operation; the air system is connected with the whole vehicle air system by adopting a rubber hose, so that the disassembly and the assembly are convenient; the diesel engine oil supply pipeline is arranged in the power pack transfer case and can be quickly disassembled and assembled; the power pack is connected with the frame through bolts, and can be quickly disassembled and assembled. Therefore, the utility model provides a rail engineering vehicle is with internal combustion hydraulic transmission power package has the good characteristics of interchangeability.
Thirdly, the utility model provides a rail engineering vehicle is with internal combustion hydraulic transmission power package has not only integrated driving system, has still inherited rail vehicle braking system wind regime system's relevant part, has improved the modularization and the integration degree of vehicle greatly, not only makes things convenient for whole car to overhaul, maintain, has still practiced thrift the research and development progress and the reliability of new product.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some implementation cases of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an internal combustion hydraulic transmission power pack for a rail engineering vehicle provided by the present invention;
FIG. 2 is a schematic view of an angle of the internal combustion hydrodynamic transmission power pack for the track-laying vehicle shown in FIG. 1;
FIG. 3 is a schematic view of an alternative angle configuration of the internal combustion hydrodynamic transmission power pack for the track-laying vehicle of FIG. 1;
FIG. 4 is a third angle schematic of the internal combustion hydrodynamic transmission power pack for the track-laying vehicle of FIG. 1;
FIG. 5 is a fourth angle schematic of the internal combustion hydrodynamic transmission power pack for the track-laying vehicle of FIG. 1;
FIG. 6 is a fifth angle schematic of the internal combustion hydrodynamic transmission power pack for the track-laying vehicle of FIG. 1;
FIG. 7 is a schematic structural diagram of a power pack frame in the internal combustion hydrodynamic transmission power pack for the track-laying vehicle shown in FIG. 1;
FIG. 8 is a schematic view of another angle configuration of the power pack frame of FIG. 7;
FIG. 9 is a schematic illustration of a power unit in the internal combustion hydrodynamic drive power pack for the track work vehicle of FIG. 1;
FIG. 10 is a schematic view of another angular configuration of the power unit shown in FIG. 9;
FIG. 11 is a schematic illustration of the transfer case of the internal combustion hydrodynamic drive power pack for the track work vehicle of FIG. 1;
FIG. 12 is a structural schematic view of another angle of the transfer case of FIG. 11;
fig. 13 is a schematic structural diagram of a composite radiator in the internal combustion hydraulic transmission power pack for the railway work vehicle shown in fig. 1.
Detailed Description
In order to make the technical solution in the embodiments of the present invention better understood and make the above objects, features and advantages of the present invention more obvious and understandable, the following description of the embodiments of the present invention is provided with reference to the accompanying drawings.
It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Please refer to fig. 1-6, wherein fig. 1 is a schematic structural diagram of an internal combustion hydraulic transmission power pack for a rail engineering vehicle according to the present invention; FIG. 2 is a schematic view of an angle of the internal combustion hydrodynamic transmission power pack for the track-laying vehicle shown in FIG. 1; FIG. 3 is a schematic view of an alternative angle configuration of the internal combustion hydrodynamic transmission power pack for the track-laying vehicle of FIG. 1; FIG. 4 is a third angle schematic of the internal combustion hydrodynamic transmission power pack for the track-laying vehicle of FIG. 1; FIG. 5 is a fourth angle schematic of the internal combustion hydrodynamic transmission power pack for the track-laying vehicle of FIG. 1; fig. 6 is a fifth angle schematic diagram of the internal combustion hydrodynamic transmission power pack for the railway work vehicle shown in fig. 1. The utility model provides a rail engineering vehicle is with internal combustion hydraulic transmission power package 100 includes power package framework 1, locates power package framework 1's diesel engine 2, hydraulic transmission case 3, composite heat radiator 4, junction box 5, air purification unit 6, distribution valve gas circuit board 7, battery 8, muffler 9, empty filter 10, air compressor machine 11.
Referring to fig. 7 and 8 in combination, fig. 7 is a schematic structural diagram of a power pack frame in the internal combustion hydraulic power transmission power pack for the railway engineering vehicle shown in fig. 1; FIG. 8 is a schematic view of another angle configuration of the power pack frame of FIG. 7. The power pack framework 1 comprises a group of longitudinal beams 101 arranged oppositely, a group of transverse beams 102 connected with the longitudinal beams 101 and arranged oppositely, two diesel engine mounting seats 103 symmetrically distributed on the two groups of transverse beams, two hydraulic transmission case mounting seats 104 symmetrically distributed on the two groups of transverse beams, two radiator mounting seats 105 symmetrically distributed on the two groups of longitudinal beams, a plurality of junction box mounting seats 106 arranged on the side plates of the transverse beams 102 and the longitudinal beams 101, an air purification unit mounting seat 107 arranged on the lower surface of one of the longitudinal beams, a distribution valve gas circuit board mounting seat 108 arranged on the side surface of one of the longitudinal beams, two groups of storage battery case beams 109 arranged on one of the transverse beams, two storage battery mounting seats 1010 respectively welded below the storage battery case beams 109, a silencer mounting seat 1011 arranged between one of the storage battery case beams 109 and the longitudinal beams 101, an air filter mounting seat 1012 arranged on the side surface of the other storage battery case beam 109, an air filter mounting seat 1012, An air compressor mounting seat 1013 arranged on the lower surface of one of the longitudinal beams and a transfer case mounting seat 1014 arranged on one side of the longitudinal beam.
The number of the longitudinal beams 101 is two, two ends of each longitudinal beam are respectively provided with a secondary shock absorber 12, and each secondary shock absorber 12 is connected with the bottom of the frame through a bolt. Specifically, each secondary damper is provided with 8 mounting holes.
The longitudinal beams 101 and the cross beams 102 have basically the same structure, are box-shaped beams formed by welding steel plates, and are in a shape of a Chinese character 'ji'. The two longitudinal beams 101 are arranged in parallel, the two cross beams 102 are arranged in parallel, and the two longitudinal beams and the two cross beams are combined to bear the whole weight of the power integration device; wherein the cross beam 102 mainly carries the weight of the diesel engine and the hydraulic transmission case.
Corresponding to the structure of the power pack frame 1, the diesel engine 2 is mounted on the diesel engine mounting seat 103, the hydraulic transmission case 3 is mounted on the hydraulic transmission case mounting seat 104, the composite radiator 4 is mounted on the radiator mounting seat 105, the junction box 5 is mounted on the junction box mounting seat 106, the air cleaning unit 6 is mounted on the air cleaning unit mounting seat 107, the distribution valve air passage plate 7 is mounted on the distribution valve air passage plate mounting seat 108, the storage battery 8 is mounted on the storage battery mounting seat 109, the muffler 9 is mounted on the muffler mounting seat 1011, the air filter 10 is mounted on the air filter mounting seat 1012, and the air compressor 11 is mounted on the air compressor mounting seat 1013.
Referring to fig. 9 to 12, fig. 9 is a schematic structural diagram of a power unit in the internal combustion hydraulic power transmission power pack for the railway engineering vehicle shown in fig. 1; FIG. 10 is a schematic view of another angular configuration of the power unit shown in FIG. 9; FIG. 11 is a schematic illustration of the transfer case of the internal combustion hydrodynamic drive power pack for the track work vehicle of FIG. 1; FIG. 12 is a schematic view of another angular configuration of the transfer case of FIG. 11. The utility model discloses in, diesel engine 2 and hydraulic transmission case 3 combine to form the power pack's power pack (not reference numeral), and power pack passes through the rubber shock absorber and is connected with corresponding diesel engine mount pad 103 and hydraulic transmission case mount pad 104. The power unit also comprises a transfer case 14, wherein the transfer case 14 is connected to a belt pulley at the front end of the diesel engine 2 through an elastic coupling 141 and a transmission shaft 142, and is provided with a plurality of output ports for providing power for an air compressor and an oil pump.
In this embodiment, the flywheel of the diesel engine 2 is connected to the input end of the hydraulic transmission case 3 by using the stud bolts, and the flywheel housing of the diesel engine is connected to the transmission case by using the bolts.
Please refer to fig. 13, which is a schematic structural diagram of a composite radiator in the internal combustion hydraulic transmission power pack for the track engineering vehicle shown in fig. 1. The composite radiator 4 is used for providing heat dissipation for diesel engine cooling liquid, diesel engine pressurized air, gearbox hydraulic transmission oil of a hydraulic transmission case and hydraulic oil, and comprises an air cooling device 401 and a water cooling device 402, wherein the air cooling device 401 comprises at least two fans, and the fans are driven by a hydraulic motor; water cooling plant 402 is including installing in expansion tank 403 above hydraulic transmission case 3, the cooling line 404 of being connected with expansion tank 403, and cooling line 404 is connected with diesel engine 2, hydraulic transmission case 3 and hydraulic tank, and wherein hydraulic tank does not belong to the utility model discloses a power package integrated device's a part.
The junction box 5 is installed at the junction of the cross beam 102 and the longitudinal beam 101, and the wiring harnesses of the diesel engine 2, the composite radiator 4, the distribution valve air circuit board 7 and the air purification unit 6 are integrated on the junction box 5. And an aviation plug interface is arranged on the junction box 5 and is used for being connected with an electric system of the whole vehicle.
The distribution valve air circuit board 7 is connected with the whole vehicle brake system pipeline through a rubber hose, and can be replaced conveniently.
The muffler 9 and the air filter 10 are attached to the turbocharger side of the diesel engine 2 as auxiliary components of the diesel engine. The muffler 9, the corrugated pipe, the exhaust pipe and the fixed connecting piece form an exhaust system of the diesel engine 2; the air filter 10, the silicone tube, the air inlet pipe and the fixed connecting piece form an air inlet system of the diesel engine. The composite radiator 4 is installed at the other side of the turbocharger of the diesel engine 2.
The accumulator 8 is arranged at the other side of the composite radiator 4 and is positioned between the silencer 9 and the air filter 10 to provide power for the diesel engine starter and the vehicle running control system. In this embodiment, the battery 8 is placed in the battery box, that is, the battery box is directly connected and fixed with the battery mounting seat.
The air purification unit 6, the distribution valve air circuit board 7 and the air compressor 11 are used as core components of a whole vehicle air braking system and are integrated on the power pack framework 1. The air compressor 11 is installed on one side of the transfer case 14, and a belt pulley of the air compressor 11 is connected with an output port of the transfer case 14 through a belt to provide an air source for an air brake system of the whole vehicle. The air outlet of the air compressor 11 is connected with the air purification unit 6 through an air pipeline, and the air outlet of the air purification unit 6 supplies air for the whole vehicle through a rubber hose. The distribution valve air circuit board 7 is arranged on the side face of the longitudinal beam and is connected with the whole vehicle brake system pipeline through a rubber hose.
Compared with the prior art, the utility model provides a rail engineering vehicle is with internal combustion hydraulic transmission power package, beneficial effect lies in:
one, the utility model provides a rail engineering vehicle is with internal combustion hydraulic transmission power package adopts the two-stage shock attenuation, can effectively alleviate power package impact and the vibration to the vehicle.
Secondly, the internal combustion hydraulic transmission power pack for the rail engineering vehicle adopts a plug-in mode with an electric system of the whole vehicle, and is simple, convenient and quick in interchange operation; the air system is connected with the whole vehicle air system by adopting a rubber hose, so that the disassembly and the assembly are convenient; the diesel engine oil supply pipeline is arranged in the power pack transfer case and can be quickly disassembled and assembled; the power pack is connected with the frame through bolts, and can be quickly disassembled and assembled. Therefore, the utility model provides a rail engineering vehicle is with internal combustion hydraulic transmission power package has the good characteristics of interchangeability.
Thirdly, the utility model provides a rail engineering vehicle is with internal combustion hydraulic transmission power package has not only integrated driving system, has still inherited rail vehicle braking system wind regime system's relevant part, has improved the modularization and the integration degree of vehicle greatly, not only makes things convenient for whole car to overhaul, maintain, has still practiced thrift the research and development progress and the reliability of new product.
The embodiments of the present invention are described in detail with reference to the drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (9)
1. The internal combustion hydraulic transmission power pack for the rail engineering vehicle is characterized by comprising a power pack framework, wherein the power pack framework comprises a group of longitudinal beams which are oppositely arranged, a group of cross beams which are connected with the longitudinal beams and are oppositely arranged, two diesel engine installation seats which are symmetrically distributed on the two groups of cross beams, two hydraulic transmission box installation seats which are symmetrically distributed on the two groups of cross beams, two radiator installation seats which are symmetrically distributed on the two groups of longitudinal beams, a plurality of wiring box installation seats which are arranged on side plates of the cross beams and the longitudinal beams, an air purification unit installation seat which is arranged on the lower surface of one of the longitudinal beams, a distribution valve air circuit board installation seat which is arranged on the side surface of one of the longitudinal beams, two groups of storage battery box beams which are arranged on one of the cross beams, two storage battery installation seats which are respectively welded below the storage battery box beams, a silencer installation seat which is arranged between one of the storage battery box beams and the longitudinal beams, a radiator installation seat which is arranged on the side surface of one of the storage battery box beams, a radiator installation seat which is arranged on the other side surface of the one of the storage battery box beams, and a radiator installation seat which is arranged on the other side surface of the radiator, The air filter mounting seat is arranged on the side surface of the other storage battery box beam, and the air compressor mounting seat is arranged on the lower surface of one longitudinal beam;
two ends of the longitudinal beam are respectively provided with a secondary shock absorber, and each secondary shock absorber is connected with the bottom of the frame through a bolt;
the air purification system also comprises a diesel engine correspondingly arranged on the diesel engine mounting seat, a hydraulic transmission case arranged on the hydraulic transmission case mounting seat, a composite radiator arranged on the radiator mounting seat, a junction box arranged on the junction box mounting seat, an air purification unit arranged on the air purification unit mounting seat, a distribution valve air circuit board arranged on the distribution valve air circuit board mounting seat, a storage battery arranged on the storage battery mounting seat, a silencer arranged on the silencer mounting seat, an air filter arranged on the air filter mounting seat and an air compressor arranged on the air compressor mounting seat;
the diesel engine and the hydraulic transmission case are combined to form a power unit of a power pack, and the power unit is connected with the corresponding diesel engine mounting seat and the corresponding hydraulic transmission case mounting seat through rubber shock absorbers;
the power unit further comprises a transfer case, the transfer case is connected to the belt pulley at the front end of the diesel engine through an elastic coupling and a transmission shaft, and a plurality of output ports are arranged to provide power for the air compressor and the oil pump.
2. The internal combustion hydraulic transmission power pack for the railway engineering vehicle as claimed in claim 1, wherein the flywheel of the diesel engine is connected with the input end of the hydraulic transmission case by a stud bolt.
3. The internal combustion hydrodynamic transmission power pack for a railway working vehicle according to claim 1, wherein the muffler and the air filter are installed at one side of a turbocharger of the diesel engine, and the composite radiator is installed at the other side of the turbocharger of the diesel engine.
4. The internal combustion hydraulic transmission power pack for the rail engineering vehicle as claimed in claim 3, wherein the compound radiator comprises an air cooling device and a water cooling device, the air cooling device comprises at least two fans, and the fans are driven by a hydraulic motor; the water cooling device comprises an expansion water tank arranged above the hydraulic transmission case and a cooling pipeline connected with the expansion water tank, and the cooling pipeline is connected with the diesel engine, the hydraulic transmission case and the hydraulic oil tank.
5. The internal combustion hydrodynamic transmission power pack for a railway working vehicle according to claim 3, wherein the battery is installed at the other side of the composite radiator between the muffler and the air filter.
6. The internal combustion hydraulic transmission power pack for the rail engineering vehicle as claimed in claim 1, wherein the air compressor is installed on one side of the transfer case, a belt pulley of the air compressor is connected with an output port on the transfer case through a belt, an air outlet of the air compressor is connected with the air purification unit through an air pipeline, and an air outlet of the air purification unit supplies air to the whole vehicle through a rubber hose.
7. The internal combustion hydraulic transmission power pack for the rail engineering vehicle as claimed in claim 1, wherein the distribution valve gas circuit board is connected with a whole vehicle brake system pipeline by a rubber hose.
8. The internal combustion hydraulic power transmission power pack for a railway working vehicle according to claim 1, wherein the junction box is mounted at a junction of the cross member and the longitudinal member, and the wiring harnesses of the diesel engine, the complex radiator, the distribution valve air passage plate, and the air cleaning unit are integrated on the junction box.
9. The internal combustion hydraulic transmission power pack for the rail engineering vehicle as claimed in claim 8, wherein an aviation plug interface is arranged on the junction box and connected with an electric system of the whole vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121155304.7U CN214985326U (en) | 2021-05-26 | 2021-05-26 | Internal combustion hydraulic transmission power pack for rail engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121155304.7U CN214985326U (en) | 2021-05-26 | 2021-05-26 | Internal combustion hydraulic transmission power pack for rail engineering vehicle |
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| Publication Number | Publication Date |
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| CN214985326U true CN214985326U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121155304.7U Active CN214985326U (en) | 2021-05-26 | 2021-05-26 | Internal combustion hydraulic transmission power pack for rail engineering vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620077A (en) * | 2022-03-15 | 2022-06-14 | 中车永济电机有限公司 | Hybrid power transmission power pack applied to railway track vehicle and operation vehicle |
-
2021
- 2021-05-26 CN CN202121155304.7U patent/CN214985326U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620077A (en) * | 2022-03-15 | 2022-06-14 | 中车永济电机有限公司 | Hybrid power transmission power pack applied to railway track vehicle and operation vehicle |
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