CN116164532A - Double-row clamping furnace tail power transmission vehicle - Google Patents
Double-row clamping furnace tail power transmission vehicle Download PDFInfo
- Publication number
- CN116164532A CN116164532A CN202310033798.9A CN202310033798A CN116164532A CN 116164532 A CN116164532 A CN 116164532A CN 202310033798 A CN202310033798 A CN 202310033798A CN 116164532 A CN116164532 A CN 116164532A
- Authority
- CN
- China
- Prior art keywords
- bars
- copper
- move
- clamping
- trolley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000010949 copper Substances 0.000 claims abstract description 52
- 229910052802 copper Inorganic materials 0.000 claims abstract description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 31
- 239000010439 graphite Substances 0.000 claims abstract description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- 238000009413 insulation Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 3
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005087 graphitization Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
- F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on or in trucks, sleds, or containers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Handcart (AREA)
Abstract
The invention relates to the technical field of graphitization production equipment, in particular to a double-row clamping furnace tail power supply vehicle, which comprises two trolleys, wherein a moving platform is arranged above each trolley, the trolleys are started to an accurate station, a first manual valve is pulled to enable the moving platform to move towards a graphite electrode, the moving platform drives copper bars and aluminum bars to move towards the graphite electrode, after two pairs of copper bars move in place, the first manual valve is pulled back to the middle position, and simultaneously, two groups of second manual valves are pulled to enable piston rods of a clamping oil cylinder to move inwards to drive each pair of copper bars to move towards each other to clamp the graphite electrode, and after a graphite motor is clamped, the two groups of second manual valves are kept in an oil supply state all the time, so that power transmission can be started; according to the technical scheme, the copper bars at the two sides are driven by the clamping oil cylinders to clamp the two sides of the graphite electrode for power transmission, and the copper-aluminum bars are not required to be arranged at the tail of each furnace, so that the consumption of the copper-aluminum bars is greatly reduced; the trolley is controlled by a remote controller, so that the trolley is convenient and stable to move, simple to operate and labor-saving.
Description
Technical Field
The invention relates to the technical field of graphitization production equipment, in particular to a double-row clamping tail electric power transmission vehicle.
Background
The series graphitizing furnace is a resistance furnace which directly introduces current into the serially connected baked products, and utilizes the resistance of the products to convert electric energy into heat energy so as to graphitize the products. The basic principle is that the roasting electrodes are horizontally placed in a furnace, are serially connected in rows according to the axis of the roasting electrodes, are fixed between two conductive electrodes, and after being electrified, the current directly flows to the electrodes, and heat is generated by means of the resistance of the roasting electrodes and the temperature is quickly raised. In the prior art, each graphitizing furnace tail is required to be provided with copper-aluminum bars, a large number of copper-aluminum bars are required, when the graphitizing furnace is powered on each time, the connecting nuts at the soft copper connection positions of the furnace tail electrodes are required to be screwed down manually to be communicated, after the power is powered on, the connecting nuts at the soft copper connection positions of the furnace tail electrodes are required to be unscrewed and disconnected manually, more manpower is required, the power-off and power-on processes are complex, and in view of the fact, the double-row clamping furnace tail power-feeding vehicle is proposed.
Disclosure of Invention
The invention aims to solve the defects in the background technology by providing a double-row clamping tail electric car.
The technical scheme adopted by the invention is as follows:
the utility model provides a double clamp furnace tail power transmission car, includes two dollies, two the top of dolly all is equipped with moving platform, still includes:
the clamping part is positioned on the moving platform, the moving platform can drive the moving platform to move through the first driving part and drive the clamping part to synchronously move, and the clamping part can drive the clamping part to clamp graphite or release graphite through the second driving part.
As a preferable technical scheme of the invention: the two trolleys can move along the ground track at the same time and drive the two moving platforms to move at the same time, the moving platforms can move relative to the trolleys under the drive of the first driving part, and the moving direction is perpendicular to the moving direction of the trolleys.
As a preferable technical scheme of the invention: the clamping parts are two pairs of copper bars respectively arranged on the two moving platforms, and the second driving part drives each pair of copper bars to move oppositely or move oppositely.
As a preferable technical scheme of the invention: aluminum bars are arranged between the two copper bars at the two ends and between the two copper bars in the middle.
As a preferable technical scheme of the invention: and an insulating assembly is arranged between the copper bar and the aluminum bar and between the copper bar and the mobile platform.
As a preferable technical scheme of the invention: the insulation assembly comprises a plurality of insulation supports used for bearing the aluminum bars and two insulation plates, wherein the insulation supports are located between the mobile platform and the aluminum bars, the bottom ends of the insulation supports are fixed with the top ends of the mobile platform, and the insulation plates are fixedly connected between the two pull rods, so that the copper bars, the aluminum bars and the mobile platform are in an insulation state.
As a preferable technical scheme of the invention: the bottom ends of the two trolleys are provided with a plurality of trolley wheels, the trolley wheels are forged, the bottom surfaces of the trolleys are provided with rails, and the trolley wheels are arranged in the rails.
As a preferable technical scheme of the invention: the first driving part is two push-pull oil cylinders, a first manual valve for controlling the push-pull oil cylinders is arranged on the trolley, the cylinder bodies of the two push-pull oil cylinders are respectively arranged at the top ends of the two trolley, and the piston rods of the two push-pull oil cylinders are respectively and fixedly connected with the bottom ends of the two movable platforms.
As a preferable technical scheme of the invention: two the equal fixedly connected with of dolly top a plurality of bearing guide rail, two the bottom of moving platform is all installed a plurality of pulley, and a plurality of pulley is respectively slidable and is located a plurality of in the bearing guide rail.
As a preferable technical scheme of the invention: every the lateral wall of copper bar all fixedly connected with water tank, the water tank intussuseption is filled with circulating water and is used for cooling the copper bar, pass through a plurality of bolted connection between copper bar and the water tank.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, through the moving platform, the clamping oil cylinder, the push-pull oil cylinder and the like, namely the first manual valve and the two groups of second manual valves are arranged on the middle position before power supply, the trolley is started to an accurate station, the first manual valve is pulled to enable the moving platform to move towards the graphite electrode, the moving platform drives the copper bars and the aluminum bars to move towards the graphite electrode, after the two pairs of copper bars move in place, the first manual valve is pulled back to the middle position, and meanwhile, the two groups of second manual valves are pulled to enable piston rods of the clamping oil cylinder to move inwards to drive each pair of copper bars to move towards each other to clamp the graphite electrode, and after the graphite motor is clamped, the two groups of second manual valves are kept in an oil supply state all the time, so that power supply can be started; after power transmission is finished, the two groups of second manual valves are moved to the reverse direction plate, so that the piston rods of the clamping oil cylinders move outwards until the piston rods of the clamping oil cylinders return to the original state, the graphite electrodes are loosened by the two pairs of copper bars, and at the moment, the two groups of second manual valves are pulled to the middle position state; pulling the first manual valve in the opposite direction to enable the movable platform to be far away from the graphite electrode, enabling the movable platform to drive the copper bars and the aluminum bars to be far away from the graphite electrode until the movable platform returns to the original position, pulling the first manual valve to a neutral position state, and starting the trolley to the next station; according to the technical scheme, the copper bars at the two sides are driven by the clamping oil cylinders to clamp the two sides of the graphite electrode for power transmission, and the copper-aluminum bars are not required to be arranged at the tail of each furnace, so that the consumption of the copper-aluminum bars is greatly reduced; the trolley is controlled by a remote controller, so that the trolley is convenient and stable to move, simple to operate and labor-saving.
Drawings
FIG. 1 is a schematic view of the overall structure of a preferred embodiment of the present invention;
FIG. 2 is a front elevational view of the overall structure of the preferred embodiment of the present invention;
FIG. 3 is a top view of the overall structure of the preferred embodiment of the present invention;
FIG. 4 is a side view of the overall structure of the copper bar clamping graphite in a preferred embodiment of the present invention;
FIG. 5 is a side view of the overall structure of the copper bar as it exits the graphite in a preferred embodiment of the present invention;
FIG. 6 is a partial top view of a copper bar clamping graphite in accordance with a preferred embodiment of the present invention;
fig. 7 is a partial structural top view of a copper bar exiting graphite in a preferred embodiment of the present invention.
The meaning of each label in the figure is:
1. a trolley; 2. a mobile platform; 3. a column; 4. a pull rod; 5. a water tank; 6. a copper bar; 7. an aluminum row; 8. clamping an oil cylinder; 9. a bearing guide rail; 10. push-pull oil cylinder; 11. an insulating support; 12. soft connection; 13. a small wheel; 14. a roller; 15. an insulating plate.
Detailed Description
It should be noted that, under the condition of no conflict, the embodiments of the present embodiments and features in the embodiments may be combined with each other, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The present invention details the above technical solution by the following examples with reference to fig. 1 to 7:
the double-row clamping tail power transmission vehicle comprises two trolleys 1, wherein the two trolleys 1 are fixed through a flexible connection 12, and the length of the flexible connection 12 is adjustable and is used for adapting to the position deviation of an electrode position generated by thermal expansion and cold contraction in the heating process of a furnace, so that the practicability of the embodiment is ensured.
The upper parts of the two trolleys 1 are provided with a movable platform 2, the upper parts of the movable platform 2 are provided with clamping parts, the bottom ends of the two trolleys 1 are provided with a plurality of trolley wheels 13, the trolley wheels 13 are forged wheels, the rigidity and the wear resistance are very high, the weight borne by the trolley 1 can be well borne, and the trolley wheels 13 are positioned in a track paved on the bottom surface;
the two trolleys 1 are electric vehicles, a remote controller is used for controlling a switch, a lithium battery is used for supplying power, charging is convenient, the two trolleys 1 are started, the two trolleys 1 can move simultaneously along a ground track and drive two moving platforms 2 to move simultaneously, and the technical scheme is used for moving the position of the clamping part, so that the clamping part is switched between the positions of all furnaces.
The moving platform 2 can move relative to the trolley 1 under the drive of the first driving part, the moving direction is vertical to the moving direction of the trolley 1, the first driving part in the embodiment is two push-pull oil cylinders 10, a first manual valve for controlling the push-pull oil cylinders 10 is arranged on the trolley 1, the cylinder bodies of the two push-pull oil cylinders 10 are respectively arranged at the top ends of the two trolley 1, and the piston rods of the two push-pull oil cylinders 10 are respectively fixedly connected with the bottom ends of the two moving platform 2;
the top ends of the two trolleys 1 are fixedly connected with a plurality of bearing guide rails 9, the bottom ends of the two movable platforms 2 are provided with a plurality of pulleys, the pulleys are respectively slidably positioned in the plurality of bearing guide rails 9, and the push-pull oil cylinder 10 is used for pushing the movable platforms 2 to move in a flat shape so as to drive the clamping parts to be close to or far away from the furnace tail.
The clamping part is two pairs of copper bars 6 respectively arranged on the two mobile platforms 2, the outer side wall of each copper bar 6 is fixedly connected with a water tank 5, circulating water is arranged in the water tank 5 and used for cooling the copper bars 6, and the copper bars 6 are connected with the water tank 5 through a plurality of bolts, so that the heat dissipation performance is better.
The clamping part can drive the clamping part to clamp graphite or loosen graphite through the second driving part, the second driving part in the embodiment is provided with a plurality of clamping cylinders 8, two groups of second manual valves are arranged on the trolley 1 and are respectively used for controlling the plurality of clamping cylinders 8 on the two movable platforms 2, the tops of the two movable platforms 2 are fixedly connected with two upright posts 3, two pull rods 4 are arranged between the tops of the two upright posts 3, the cylinder bodies of the plurality of clamping cylinders 8 are respectively and fixedly connected to the inner side walls of the two pairs of upright posts 3, the piston rods of the plurality of clamping cylinders 8 are fixedly connected with the side walls of the water tank 5, the bottom end of the water tank 5 is provided with a roller 14, the surface of the movable platform 2 is provided with a roller guide rail, the roller 14 can move in the roller guide rail, and the plurality of clamping cylinders 8 are used for pushing each pair of water tanks 5 to move oppositely or move oppositely so as to drive each pair of copper bars 6 to clamp or loosen graphite.
An aluminum bar 7 is fixedly connected between the two copper bars 6 at the two ends and between the two copper bars 6 in the middle and used for conducting electricity, and the current can be changed by changing the specification of the aluminum bar 7, so that the requirements of various furnace types are met.
Be equipped with insulation component between copper bar 6 and aluminium bar 7 and the moving platform 2, insulation component in this embodiment includes a plurality of insulating support 11 and two insulation boards 15, a plurality of insulating support 11 is located between moving platform 2 and the aluminium bar 7, the bottom of insulating support 11 is fixed with moving platform 2's top, insulating support 11 is used for bearing aluminium bar 7, insulation board 15 fixed connection makes copper bar 6, aluminium bar 7 and moving platform 2 between all be in insulating state, guarantee the electricity safety, avoid harm to the user.
According to the double-row clamping furnace tail power feeding vehicle, a first manual valve and two groups of second manual valves before power transmission are arranged on the middle position, a user controls the trolley 1 to start through a remote controller, a trolley wheel 13 moves in a bottom surface track, as a vehicle body formed by the two trolley 1 is long, the two persons observe that when each pair of copper bars 6 on the two trolley 1 reach the front of an electrode needing to be clamped, the trolley 1 is controlled to stop through the remote controller, the first manual valve is pulled to enable a moving platform 2 to move towards a graphite electrode, a pulley moves in a bearing guide rail 9, the moving platform 2 drives the copper bars 6 and an aluminum bar 7 to move towards the graphite electrode, after the two pairs of copper bars 6 move in place, the first manual valve is pulled back to the middle position, and simultaneously, the two groups of second manual valves are pulled to enable piston rods of a clamping cylinder 8 to move inwards to drive each pair of copper bars 6 to move towards the graphite electrode, and a roller 14 moves in a roller guide rail, and after the graphite motor is clamped, the two groups of second manual valves are kept in a state, namely power transmission can be started; after power transmission is finished, the two groups of second manual valves are moved to the opposite direction plate, so that the piston rods of the clamping oil cylinders 8 move outwards until the piston rods of the clamping oil cylinders 8 return to the original state, the graphite electrodes are loosened by the two pairs of copper bars 6, and at the moment, the two groups of manual valves are pulled to the middle position state; and pulling the first manual valve in the opposite direction to enable the movable platform 2 to be far away from the graphite electrode, enabling the movable platform 2 to drive the copper bar 6 and the aluminum bar to be far away from the graphite electrode until the movable platform 2 returns to the original position, and pulling the manual valve to a neutral position state, so that the trolley 1 can be started to the next station.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. Double clamp furnace tail send electric car, including two dolly (1), its characterized in that, two the top of dolly (1) all is equipped with moving platform (2), still includes:
the clamping part is positioned on the movable platform (2), the movable platform (2) can drive the movable platform to move through the first driving part and drive the clamping part to synchronously move, and the clamping part can drive the movable platform to clamp graphite or release graphite through the second driving part.
2. The double row clamping tail conveyor train of claim 1, wherein: the two trolleys (1) can move along the ground track at the same time and drive the two moving platforms (2) to move at the same time, the moving platforms (2) can move relative to the trolleys (1) under the drive of the first driving part, and the moving direction is perpendicular to the moving direction of the trolleys (1).
3. The double row clamping tail conveyor train of claim 2, wherein: the clamping parts are two pairs of copper bars (6) respectively arranged on the two moving platforms (2), and the second driving parts drive each pair of copper bars (6) to move oppositely or move oppositely.
4. A double row clamping tail feed car as claimed in claim 3, wherein: aluminum bars (7) are arranged between the two copper bars (6) at the two ends and between the two copper bars (6) in the middle.
5. The double row clamping tail conveyor train of claim 4, wherein: an insulating component is arranged between the copper bar (6) and the aluminum bar (7) and between the copper bar and the mobile platform (2).
6. The double row clamping tail conveyor train of claim 5, wherein: the insulation assembly comprises a plurality of insulation supports (11) used for bearing the aluminum bars (7) and two insulation plates (15), wherein the insulation supports (11) are located between the mobile platform (2) and the aluminum bars (7), the bottom ends of the insulation supports (11) are fixed with the top ends of the mobile platform (2), and the insulation plates (15) are fixedly connected between the two pull rods (4) so that the copper bars (6), the aluminum bars (7) and the mobile platform (2) are in an insulation state.
7. The double row clamping tail conveyor train of claim 6, wherein: a plurality of small wheels (13) are arranged at the bottom ends of the two small vehicles (1), the small wheels (13) are forged wheels, a track is arranged on the bottom surface of each small vehicle (1), and the small wheels (13) are arranged in the track.
8. The double row clamping tail conveyor train of claim 7, wherein: the first driving part is two push-pull oil cylinders (10), a first manual valve for controlling the push-pull oil cylinders (10) is arranged on the trolley (1), the cylinder bodies of the two push-pull oil cylinders (10) are respectively arranged at the top ends of the two trolley (1), and the piston rods of the two push-pull oil cylinders (10) are respectively fixedly connected with the bottom ends of the two movable platforms (2).
9. The double row clamping tail conveyor train of claim 8, wherein: the top ends of the two trolleys (1) are fixedly connected with a plurality of bearing guide rails (9), the bottom ends of the two mobile platforms (2) are provided with a plurality of pulleys, and the pulleys are respectively and slidably positioned in the plurality of bearing guide rails (9).
10. The double row clamping tail conveyor train of claim 9, wherein: every lateral wall of copper bar (6) all fixedly connected with water tank (5), water tank (5) intussuseption is filled with circulating water and is used for cooling copper bar (6), through a plurality of bolted connection between copper bar (6) and water tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310033798.9A CN116164532A (en) | 2023-01-10 | 2023-01-10 | Double-row clamping furnace tail power transmission vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310033798.9A CN116164532A (en) | 2023-01-10 | 2023-01-10 | Double-row clamping furnace tail power transmission vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116164532A true CN116164532A (en) | 2023-05-26 |
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ID=86412669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310033798.9A Pending CN116164532A (en) | 2023-01-10 | 2023-01-10 | Double-row clamping furnace tail power transmission vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116164532A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117369541A (en) * | 2023-12-07 | 2024-01-09 | 湖南华夏特变股份有限公司 | Auxiliary control method for power transmission vehicle, and readable storage medium |
-
2023
- 2023-01-10 CN CN202310033798.9A patent/CN116164532A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117369541A (en) * | 2023-12-07 | 2024-01-09 | 湖南华夏特变股份有限公司 | Auxiliary control method for power transmission vehicle, and readable storage medium |
| CN117369541B (en) * | 2023-12-07 | 2024-03-26 | 湖南华夏特变股份有限公司 | Auxiliary control method for power transmission vehicle, and readable storage medium |
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