CN205836533U - A kind of combined tractor - Google Patents
A kind of combined tractor Download PDFInfo
- Publication number
- CN205836533U CN205836533U CN201620646278.0U CN201620646278U CN205836533U CN 205836533 U CN205836533 U CN 205836533U CN 201620646278 U CN201620646278 U CN 201620646278U CN 205836533 U CN205836533 U CN 205836533U
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- Prior art keywords
- vehicle frame
- change speed
- gear box
- speed gear
- drive sprocket
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Abstract
The utility model discloses a kind of combined tractor, including vehicle frame, the front upper place of vehicle frame is provided with driver's cabin, the back upper place of vehicle frame is provided with dynamical system and air-channel system, and the front and back of vehicle frame is separately installed with pre-traction device and rear towing device, and the lower section of vehicle frame is provided with running gear, brakes is installed in running gear, periphery below vehicle frame is provided with covering, and the periphery above vehicle frame is provided with guardrail, and running gear includes front driving wheel and rear drive sprocket；Dynamical system includes electromotor, change speed gear box and flexible buffer device, electromotor is connected with flexible buffer device, flexible buffer device is connected with change speed gear box by the 3rd power transmission shaft, change speed gear box is connected with front driving wheel by the first power transmission shaft, and change speed gear box is connected with rear drive sprocket by second driving shaft.This utility model pull strength is big, and Life of Tyre is long, and electromotor directly provides power, improves the range of tractor.
Description
Technical field
This utility model belongs to tractor technical field, particularly relates to a kind of combined tractor.
Background technology
Rail-road car is also called road rail vehicle, or rail-road car, or combined tractor, is that track is handed over
Logical corollary equipment, for vehicle tractor-trailer train in orbit, and accurate contraposition in orbit.The road rail vehicle section of can also be used for
Interior other are shunt and para-position operation.Road rail vehicle typically uses accumulator to be power supply, both can traveling gauge in rolling stock section
On the various tracks of 1435mm, it is possible to travel on smooth-riding surface.Road rail vehicle possesses pilot steering, wireless remote control two kinds control
Mode processed.Road rail vehicle is equipped with fixed automatic car coupler, has and the function of the train automatic car coupler such as subway hook, arranges simultaneously
Car bridge possesses automatic uncoupling function.
The most domestic combined tractor, owing to mostly using the universal chassis transformation of the way to form, easily affects chassis
Efficiency of actual and service life, the instream factor causing road rail vehicle is the highest, have impact on it and promotes the use of.The end of with
What when dish is reequiped, topmost difference was its driving force carrys out source problem.One is by guiding increase driving dress on steel wheel
Putting, the pull strength of driving is mainly produced with rail friction by steel wheel, consistent with the driving force of ordinary train, and this kind of mode needs one
The driving means of set complexity drives vehicle, makes the purchase cost of vehicle and use cost all be greatly improved.Another kind is to guide
Guide effect before and after wheel, its driving force is by rubber wheel and rail friction generation pull strength, and this kind of mode easily causes logical
Serious with chassis tire wear, affect vehicle service life.Another a kind of for by utilizing the power system on circuit direct
Carry out power supply, but the vehicle of this type is not appropriate for road emergency rescue work.Because of this kind when circuit breaks down
Vehicle is then not suitable for carrying out rescue work.
Summary of the invention
The purpose of this utility model is that and overcomes the deficiencies in the prior art, it is provided that a kind of combined tractor, utilizes
Tire and track friction produce pull strength, the drive system that configuration all can drive, it is provided that the driving force of vehicle, make the mill of tire
Damage equilibrium, substantially increase the service life of tire, directly provide power by electromotor simultaneously, improve the use of tractor
Scope, as carried out emergent traction work as recovery vehicle or emergency vehicles when circuit breaks down.
To achieve these goals, this utility model provides a kind of combined tractor, including vehicle frame, described vehicle frame
Front upper place driver's cabin is installed, the back upper place of described vehicle frame is provided with dynamical system and air-channel system, the front of described vehicle frame
Being separately installed with pre-traction device and rear towing device with rear, the lower section of described vehicle frame is provided with running gear, described walking
Being provided with brakes in system, the periphery below described vehicle frame is provided with covering, and the periphery above described vehicle frame is provided with
Guardrail, described running gear includes that front driving wheel and rear drive sprocket, described front driving wheel are installed on the front below described vehicle frame,
Described rear drive sprocket is installed on the rear below described vehicle frame；It is positioned at the front of described front driving wheel, described vehicle frame is installed
There are front guider, hydraulic system and electrical system；It is positioned at the rear of described rear drive sprocket, leads after described vehicle frame is provided with
To device；Described dynamical system includes that electromotor, change speed gear box and flexible buffer device, described electromotor fill with described flexible buffer
Putting and be connected, described flexible buffer device is connected with described change speed gear box by the 3rd power transmission shaft, and described change speed gear box passes through first
Power transmission shaft is connected with described front driving wheel, and described change speed gear box is connected with described rear drive sprocket by second driving shaft.
Further, described flexible buffer device is yielding coupling, and the outfan of described electromotor passes through the described 3rd
Power transmission shaft is connected with described yielding coupling.
Further, described front driving wheel is installed on the front below described vehicle frame, and described rear drive sprocket is installed on described
Rear below vehicle frame, described front driving wheel is connected by front driving axle, and described rear drive sprocket is connected by rear driving axle,
Described change speed gear box is connected with described front driving axle by described first power transmission shaft, and described change speed gear box passes through described second driving shaft
It is connected with described rear driving axle.
Further, described front guider includes that front jockey wheel, described rear guider include rear directive wheel, described before
Directive wheel is installed on the front lower place of described vehicle frame and is positioned at the front of described front driving wheel, and described rear directive wheel is installed on described car
The back lower place of frame and be positioned at the rear of described rear drive sprocket.
Further, described pre-traction device is identical with the structure of described rear towing device, and described pre-traction device includes
Hitch, coupler seat, draw bar and traction seat, described hitch is connected with described coupler seat, and one end of described draw bar is with described
Coupler seat is connected, and described draw bar is through the through hole of described traction seat, and the other end of described draw bar is provided with bearing pin, and logical
It is connected with described coupler seat in crossing the pin-and-hole of the described bearing pin described coupler seat of insertion.
Further, described coupler seat being provided with some bolts hole, described hitch is connected with described coupler seat bolt.
Further, the bolt hole on described coupler seat is slotted hole.
Further, described pre-traction device also includes that buffer spring, described buffer spring include outer buffer spring and interior
Buffer spring, one end of described outer buffer spring is connected with described hitch, and the other end is connected with described coupler seat, described outer buffering
Described interior buffer spring it is provided with in spring.
No matter front driving wheel of the present utility model and rear drive sprocket are in road running state or railway transport condition, forerunner
Driving wheel and rear drive sprocket all contact with ground or rail, play and drive and the effect of load-bearing.When being in railroad-driving mode,
The front jockey wheel of front guider and the rear directive wheel of rear guider are fallen, by the energy storage of the oil cylinder valve group in hydraulic system
Device, so that front jockey wheel and the upper and lower elastic floating of rear directive wheel, plays certain elastic reaction, but front jockey wheel and after lead
Only play fraction load-bearing effect to wheel, be pressed together on rail, it is thus possible to fit to well on rail, prevent the generation of derailing.
Running gear of the present utility model both can travel on highway also can meet driving requirements on railway, and it drives
Power resources in dynamical system, by change speed gear box, power is delivered separately to front driving wheel and rear drive sprocket, so ratio general
The actually active driving force that the chassis transformation of the way relies solely on back axle or propons driving is bigger, can meet the traction of more large-tonnage.Power
System directly provides power by electromotor, improves the range of tractor, as can be as robbing when circuit breaks down
Repair or emergency vehicles carry out emergent traction work.
Change speed gear box of the present utility model is connected with front driving wheel by the first power transmission shaft, by second driving shaft and rear-guard
Driving wheel is connected, to ensure 4 × 4 driving requirements of tractor.Electromotor and change speed gear box are arranged apart, it is possible to maximally play two
Person's respective layout degree of freedom, after an entirety will not being arranged to due to electromotor and change speed gear box, the restriction arranged due to both
It is superimposed, increases the layout difficulty of whole dynamical system.
This utility model electromotor is connected to transmit power with flexible buffer device, it is preferable that flexible buffer device is
Yielding coupling, uses the form of yielding coupling transition transmission power, decreases the vibration due to electromotor and move postorder
The impact that the transmission of power causes.
Bolt hole on coupler seat of the present utility model uses slotted hole, it is possible to achieve hitch relative to coupler seat at height
Adjustment on direction, can eliminate foozle during assembling, improve the assembly precision of hitch.
The buffer spring that hitch of the present utility model is connected with coupler seat, is used for relaxing train and is in operation due to traction
The change of power or starting, braking and during shunting service vehicle mutually collide and the impact of collision that causes and vibration, thus alleviate
To body construction and the destruction of loading goods.
The beneficial effects of the utility model: no matter front driving wheel of the present utility model and rear drive sprocket are in road running shape
State or railway transport condition, front driving wheel and rear drive sprocket all contact with ground or rail, play and drive and the effect of load-bearing.
Running gear both can travel on highway also can meet driving requirements on railway, and its power resources driven are in dynamical system
System, is delivered separately to front driving wheel and rear drive sprocket by change speed gear box by power, after so tightly relying on than the universal chassis transformation of the way
The actually active driving force that bridge or propons drive is bigger, can meet the traction of more large-tonnage.Dynamical system is direct by electromotor
Power is provided, improves the range of tractor, as entered as recovery vehicle or emergency vehicles when circuit breaks down
Row emergent traction work.Electromotor and change speed gear box are arranged apart, it is possible to maximally play both respective layout degree of freedom, will not
After being arranged to an entirety due to electromotor and change speed gear box, the restriction arranged due to both is superimposed, and increases whole power
The layout difficulty of system.Electromotor is connected to transmit power with flexible buffer device, decrease the vibration due to electromotor and
The impact that the transmission of postorder power is caused.Bolt hole on coupler seat uses slotted hole, it is possible to achieve hitch is relative to hitch
Seat adjustment in the height direction, can eliminate foozle during assembling, improve the assembly precision of hitch.Hitch and coupler seat phase
The buffer spring connected, is used for relaxing train and is in operation due to the change of pull strength or when starting, braking and shunting service
Impact of collision that vehicle mutually collides and causes and vibration, thus alleviate body construction and the destruction that loads goods.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only
It is embodiments more of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the structural representation of this utility model embodiment.
Fig. 2 is the structural representation of this utility model embodiment dynamical system.
Fig. 3 is the structural representation of this utility model embodiment pre-traction device.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is the structural representation of buffer spring in this utility model embodiment pre-traction device.
Above-mentioned reference:
1, pre-traction device；2, front guider；3, hydraulic system；4, front driving wheel；5, covering；6, guardrail；7, after
Driving wheel；8, rear guider；9, rear towing device；10, dynamical system；11, air-channel system；12, driver's cabin；13, it is electrically
System；14, vehicle frame；15, the first power transmission shaft；16, change speed gear box；17, second driving shaft；18, the 3rd power transmission shaft；19, flexible buffer dress
Put；20, bearing pin；21, chain；22, draw bar；23, traction seat；24, vehicle frame traction bearing；25, vehicle frame baffle plate；26, coupler seat；
27, hitch；28, pin-and-hole；29, outer buffer spring；30, interior buffer spring.
Detailed description of the invention
Below in conjunction with the accompanying drawings utility model is further illustrated, but be not limited to scope of the present utility model.
As shown in Figure 1, 2, the combined tractor of one that this utility model provides, including vehicle frame 14, described vehicle frame 14
Front upper place driver's cabin 12 is installed, the back upper place of described vehicle frame 14 is provided with dynamical system 10 and air-channel system 11, described car
The front and back of frame 14 is separately installed with pre-traction device 1 and rear towing device 9, and the lower section of described vehicle frame 14 is provided with walking
System, described running gear is provided with brakes, and the periphery below described vehicle frame 14 is provided with covering 5, described vehicle frame
Periphery above in the of 14 is provided with guardrail 6, and described running gear includes that front driving wheel 4 and rear drive sprocket 7, described front driving wheel 4 are pacified
Being loaded on the front below described vehicle frame 14, described rear drive sprocket 7 is installed on the rear below described vehicle frame 14；It is positioned at described forerunner
The front of driving wheel 4, guider 2, hydraulic system 3 and electrical system 13 before being provided with on described vehicle frame 14；Be positioned at described after
The rear of driving wheel 7, guider 8 after being provided with on described vehicle frame 14；Described dynamical system 10 includes electromotor, change speed gear box
16 and flexible buffer device 19, described electromotor is connected with described flexible buffer device 19, and described flexible buffer device 19 leads to
Crossing the 3rd power transmission shaft 18 to be connected with described change speed gear box 16, described change speed gear box 16 is by the first power transmission shaft 15 and described front driving wheel
4 are connected, and described change speed gear box 16 is connected with described rear drive sprocket 7 by second driving shaft 17.
Described flexible buffer device 19 of the present utility model is yielding coupling, and the outfan of described electromotor is by described
3rd power transmission shaft 18 is connected with described yielding coupling.
Front driving wheel 4 described in of the present utility model two is installed on the front below described vehicle frame 14, rear drive sprocket 7 described in two
Being installed on the rear below described vehicle frame 14, described in two, front driving wheel 4 is connected by front driving axle, rear drive sprocket 7 described in two
Being connected by rear driving axle, described change speed gear box 16 is connected with described front driving axle by described first power transmission shaft 15, described
Change speed gear box 16 is connected with described rear driving axle by described second driving shaft 17.
As in Figure 3-5, described front guider 2 includes that front jockey wheel, described rear guider 8 include rear directive wheel,
Described front jockey wheel is installed on the front lower place of described vehicle frame 14 and is positioned at the front of described front driving wheel 4, and described rear directive wheel is pacified
It is loaded on the back lower place of described vehicle frame 14 and is positioned at the rear of described rear drive sprocket 7.
Described pre-traction device 1 of the present utility model is identical with the structure of described rear towing device 9, described pre-traction device
1 includes that hitch 27, coupler seat 26, draw bar 22 and traction seat 23, described hitch 27 are connected with described coupler seat 26, described in lead
The one end drawing bar 22 is connected with described coupler seat 26, and described draw bar 22 is through the through hole of described traction seat 23, described traction
The other end of bar 22 is provided with bearing pin 20, and inserted by described bearing pin 20 in the pin-and-hole 28 of described coupler seat 26 with described hitch
Seat 26 connects.Preferably, the other end of draw bar 22 is connected with bearing pin 20 by chain 21.
Some bolts hole, described hitch 27 and described coupler seat 26 spiral shell it is provided with on described coupler seat 26 of the present utility model
Tether and connect.Preferably, coupler seat 26 is provided with four bolts hole.
Bolt hole on described coupler seat 26 of the present utility model is slotted hole.
Described pre-traction device of the present utility model also includes that buffer spring, described buffer spring include outer buffer spring 29
With interior buffer spring 30, one end of described outer buffer spring 29 is connected with described hitch 27, and the other end is with described coupler seat 26 even
Connect, in described outer buffer spring 29, be provided with described interior buffer spring 30.
No matter front driving wheel 4 of the present utility model and rear drive sprocket 7 are in road running state or railway transport condition, front
Driving wheel 4 and rear drive sprocket 7 all contact with ground or rail, play and drive and the effect of load-bearing.Mould is travelled when being in railway
During formula, after the front jockey wheel of front guider 2 and the 8 of rear guider, directive wheel is fallen, by the oil cylinder valve in hydraulic system 3
The accumulator of group, so that front jockey wheel and the upper and lower elastic floating of rear directive wheel, plays certain elastic reaction, but leading to
Wheel and rear directive wheel only play fraction load-bearing effect, are pressed together on rail, it is thus possible to fit to well on rail, prevent derailing
Generation.
Running gear of the present utility model i.e. can travel on highway also can meet driving requirements on railway, and it drives
Power resources in dynamical system, by change speed gear box 16 power is delivered separately to front driving wheel 4 and rear drive sprocket 7, so than
The actually active driving force that the universal chassis transformation of the way tightly relies on back axle or propons to drive is bigger, can meet the traction of more large-tonnage.
Dynamical system 10 directly provides power by electromotor, improves the range of tractor, as can when circuit breaks down
Emergent traction work is carried out as recovery vehicle or emergency vehicles.
Change speed gear box 16 of the present utility model is connected with front driving wheel 4 by the first power transmission shaft 15, passes through second driving shaft
17 are connected with rear drive sprocket 7, to ensure 4 × 4 driving requirements of tractor.Electromotor and change speed gear box 16 are arranged apart, it is possible to
Maximally play both respective layout degree of freedom, after an entirety will not being arranged to due to electromotor and change speed gear box 16, due to
The restriction that both arrange is superimposed, and increases the layout difficulty of whole dynamical system.
This utility model electromotor is connected to transmit power with flexible buffer device 19, it is preferable that flexible buffer device
16 is yielding coupling, uses the form of yielding coupling transition transmission power, decrease the vibration due to electromotor and to rear
The impact that the transmission of sequence power causes.
Bolt hole on coupler seat 26 of the present utility model uses slotted hole, it is possible to achieve hitch 27 is relative to coupler seat 26
Adjustment in the height direction, can eliminate foozle during assembling, improve the assembly precision of hitch 27.
The buffer spring that hitch 27 of the present utility model is connected with coupler seat 26, be used for relax train be in operation due to
The change of pull strength or starting, braking and during shunting service vehicle mutually collide and the impact of collision that causes and vibration, thus
Alleviate body construction and the destruction of loading goods.
Hitch 27 of the present utility model mainly realizes the company between two cars and hangs.Hitch 27 assembling time up and down apart from permissible
Arbitrarily adjust in the range of design, bring great convenience to the assembling of hitch 27.
Pre-traction device 1 of the present utility model also includes hook shadoof, can realize hitch 27 locking, unblanks and standard-sized sheet
Three state positions, make hitch even extension or the decoupling device of combined tractor and train.
Preferably, draw bar 22 is welded this utility model by low alloy steel plate, it is ensured that draw bar 22 is in towage
Time strength and stiffness, it is ensured that safety.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model also can
There are various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model is wanted
Protection domain is asked to be defined by appending claims and equivalent thereof.
Claims (8)
1. a combined tractor, it is characterised in that: include that vehicle frame, the front upper place of described vehicle frame are provided with driver's cabin, institute
The back upper place stating vehicle frame is provided with dynamical system and air-channel system, and the front and back of described vehicle frame is separately installed with front haulage dress
Putting and rear towing device, the lower section of described vehicle frame is provided with running gear, and described running gear is provided with brakes, described
Periphery below vehicle frame is provided with covering, and the periphery above described vehicle frame is provided with guardrail, and described running gear includes forerunner
Driving wheel and rear drive sprocket, described front driving wheel is installed on the front below described vehicle frame, and described rear drive sprocket is installed on described car
Rear below frame；
It is positioned at the front of described front driving wheel, guider, hydraulic system and electrical system before being provided with on described vehicle frame；Position
In the rear of described rear drive sprocket, guider after being provided with on described vehicle frame；
Described dynamical system includes electromotor, change speed gear box and flexible buffer device, described electromotor and described flexible buffer device
Being connected, described flexible buffer device is connected with described change speed gear box by the 3rd power transmission shaft, and described change speed gear box is by the first biography
Moving axis is connected with described front driving wheel, and described change speed gear box is connected with described rear drive sprocket by second driving shaft.
The combined tractor of one the most according to claim 1, it is characterised in that described flexible buffer device is elastic
Shaft coupling, the outfan of described electromotor is connected with described yielding coupling by described 3rd power transmission shaft.
The combined tractor of one the most according to claim 1, it is characterised in that front driving wheel described in two is installed on institute
Stating the front below vehicle frame, rear drive sprocket described in two is installed on the rear below described vehicle frame, and front driving wheel described in two is by front
Drive axle is connected, and described in two, rear drive sprocket is connected by rear driving axle, described change speed gear box by described first power transmission shaft with
Described front driving axle is connected, and described change speed gear box is connected with described rear driving axle by described second driving shaft.
The combined tractor of one the most according to claim 1, it is characterised in that described front guider includes leading
To wheel, described rear guider includes that rear directive wheel, described front jockey wheel are installed on the front lower place of described vehicle frame and are positioned at described
The front of front driving wheel, described rear directive wheel is installed on the back lower place of described vehicle frame and is positioned at the rear of described rear drive sprocket.
The combined tractor of one the most according to claim 1, it is characterised in that described pre-traction device and described after
The structure of traction apparatus is identical, and described pre-traction device includes hitch, coupler seat, draw bar and traction seat, described hitch and institute
Stating coupler seat to be connected, one end of described draw bar is connected with described coupler seat, and described draw bar is through described traction seat
Through hole, the other end of described draw bar is provided with bearing pin, and the pin-and-hole by the described bearing pin described coupler seat of insertion is interior with described
Coupler seat connects.
The combined tractor of one the most according to claim 5, it is characterised in that be provided with some on described coupler seat
Bolt hole, described hitch is connected with described coupler seat bolt.
The combined tractor of one the most according to claim 6, it is characterised in that the bolt hole on described coupler seat is
Slotted hole.
The combined tractor of one the most according to claim 5, it is characterised in that described pre-traction device also includes delaying
Rushing spring, described buffer spring includes outer buffer spring and interior buffer spring, one end of described outer buffer spring and described hitch
Connecting, the other end is connected with described coupler seat, is provided with described interior buffer spring in described outer buffer spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620646278.0U CN205836533U (en) | 2016-06-27 | 2016-06-27 | A kind of combined tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620646278.0U CN205836533U (en) | 2016-06-27 | 2016-06-27 | A kind of combined tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205836533U true CN205836533U (en) | 2016-12-28 |
Family
ID=57620579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620646278.0U Expired - Fee Related CN205836533U (en) | 2016-06-27 | 2016-06-27 | A kind of combined tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205836533U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956554A (en) * | 2017-03-23 | 2017-07-18 | 陕西奥力信工程机械有限公司 | A kind of chassis structure of combined Operation Van |
| CN107471932A (en) * | 2017-08-26 | 2017-12-15 | 湖北时瑞达重型工程机械有限公司 | A kind of combined tractor of battery |
| CN107839476A (en) * | 2017-10-31 | 2018-03-27 | 中车四方车辆有限公司 | A kind of combined tractor |
| CN109131408A (en) * | 2018-09-29 | 2019-01-04 | 天津电力机车有限公司 | A kind of combined steering wheel vehicle framework and steering wheel vehicle |
-
2016
- 2016-06-27 CN CN201620646278.0U patent/CN205836533U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956554A (en) * | 2017-03-23 | 2017-07-18 | 陕西奥力信工程机械有限公司 | A kind of chassis structure of combined Operation Van |
| CN106956554B (en) * | 2017-03-23 | 2023-04-11 | 陕西奥力信工程机械有限公司 | Chassis structure of highway and railway dual-purpose operation vehicle |
| CN107471932A (en) * | 2017-08-26 | 2017-12-15 | 湖北时瑞达重型工程机械有限公司 | A kind of combined tractor of battery |
| CN107839476A (en) * | 2017-10-31 | 2018-03-27 | 中车四方车辆有限公司 | A kind of combined tractor |
| CN109131408A (en) * | 2018-09-29 | 2019-01-04 | 天津电力机车有限公司 | A kind of combined steering wheel vehicle framework and steering wheel vehicle |
| CN109131408B (en) * | 2018-09-29 | 2023-12-22 | 天津电力机车有限公司 | Road and railway dual-purpose rudder wheel vehicle framework and steering wheel vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161228 Termination date: 20170627 |
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| CF01 | Termination of patent right due to non-payment of annual fee |