CN111140555A - Engineering vehicle with movable cab and control loop - Google Patents
Engineering vehicle with movable cab and control loop Download PDFInfo
- Publication number
- CN111140555A CN111140555A CN202010125187.3A CN202010125187A CN111140555A CN 111140555 A CN111140555 A CN 111140555A CN 202010125187 A CN202010125187 A CN 202010125187A CN 111140555 A CN111140555 A CN 111140555A
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- Prior art keywords
- control
- pipeline
- oil
- cab
- valve
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/0617—Drivers' cabs for tractors or off-the-road vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/063—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
- B62D33/0636—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other displaceable along a linear path
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/52—Details of compartments for driving engines or motors or of operator's stands or cabins
- B66C13/54—Operator's stands or cabins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/0759—Details of operating station, e.g. seats, levers, operator platforms, cabin suspension
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a control loop, which comprises an energy accumulator, an oil pipeline, a first control pipeline, a second control pipeline and a hydraulic motor, wherein the energy accumulator is used for conveying pressure oil; the first control pipeline and the second control pipeline are communicated with the oil conveying pipeline through a reversing valve mechanism, and both the first control pipeline and the second control pipeline are communicated with the hydraulic motor; when the reversing valve mechanism is communicated with the oil conveying pipeline and the first control pipeline, pressure oil is used for driving the hydraulic motor to rotate forwards; when the reversing valve mechanism is communicated with the oil pipeline and the second control pipeline, the pressure oil is used for driving the hydraulic motor to rotate reversely. The invention also discloses an engineering vehicle with a movable cab, which comprises the control circuit. The control loop and the engineering vehicle can improve the visual field of the cab and reduce the potential safety hazard of operation.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a control loop. The invention also relates to a cab-movable engineering vehicle with the control circuit.
Background
For most engineering vehicles such as front-loading cranes and large-tonnage forklifts, the cab is always mechanically fixed to the chassis structure. The cab cannot be moved, the view of a driver is limited under complex working conditions and working environments, certain inconvenience and potential safety hazards exist, and the working efficiency is reduced.
Therefore, how to widen the field of vision of the driver and improve the operation safety of the engineering vehicle becomes a technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a control loop which can solve the potential safety hazard caused by the limited visual field of a cab. Another object of the present invention is to provide a mobile cab-type work vehicle comprising the above-mentioned control circuit.
In order to achieve the purpose, the invention provides a control circuit, which comprises an energy accumulator, an oil pipeline, a first control pipeline, a second control pipeline and a hydraulic motor, wherein the energy accumulator is used for conveying pressure oil;
the first control pipeline and the second control pipeline are communicated with the oil conveying pipeline through a reversing valve mechanism, and both the first control pipeline and the second control pipeline are communicated with the hydraulic motor;
when the reversing valve mechanism is communicated with the oil conveying pipeline and the first control pipeline, pressure oil is used for driving the hydraulic motor to rotate forwards; when the reversing valve mechanism is communicated with the oil pipeline and the second control pipeline, the pressure oil is used for driving the hydraulic motor to rotate reversely.
Optionally, the reversing valve mechanism includes an electromagnetic reversing valve, a first double hydraulic control check valve disposed in the first control pipeline, and a second double hydraulic control check valve disposed in the second control pipeline;
the electromagnetic directional valve is a three-position four-way valve, a first interface is communicated with the energy accumulator, and a fourth interface is used for connecting an oil tank;
when the three-position four-way valve is positioned at a first position, a second interface of the three-position four-way valve is communicated with the first interface, and the first double-hydraulic control one-way valve is communicated with oil transportation; pushing the second double hydraulic control one-way conduction oil return, and conducting the fourth interface by a third interface of the three-position four-way valve;
when the three-position four-way valve is located at a second position, the third interface conducts the first interface, and the second double-hydraulic control one-way valve conducts oil transportation; pushing the first double hydraulic control one-way valve to conduct return oil, and conducting the fourth interface by the second interface;
when the three-position four-way valve is located at the third position, the first interface conducts the fourth interface, and the first double hydraulic control one-way valve and the second double hydraulic control one-way valve are both closed.
Optionally, the oil delivery line is provided with a pressure reducing valve and a damping orifice.
Optionally, the accumulator is provided with a pressure detection mechanism.
Optionally, the system further comprises a self-circulation pipeline communicating the first control pipeline and the second control pipeline, and the self-circulation pipeline is provided with a self-circulation control valve.
Optionally, the self-circulation control valve is a two-position two-way solenoid valve.
The invention also provides an engineering vehicle with a movable cab, which comprises the cab, a chassis mechanism and the control circuit, wherein the cab is connected with the chassis mechanism through a sliding rail, and the hydraulic motor is used for driving the cab to move relative to the chassis mechanism.
Optionally, the hydraulic motor is connected with a gear, and a rack matched with the gear is arranged at the bottom of the cab.
Optionally, the slide rail is provided with a limiting mechanism, and a locking mechanism is arranged between the chassis mechanism and the cab.
Compared with the background technology, the control circuit provided by the invention comprises an energy accumulator, an oil pipeline, a first control pipeline, a second control pipeline and a hydraulic motor; the energy accumulator is communicated with an oil conveying pipeline to convey pressure oil, the first control pipeline and the second control pipeline are communicated with the oil conveying pipeline through the reversing valve mechanism respectively, so that the flow direction of the oil conveying in the oil conveying pipeline is controlled, the hydraulic motor is driven by the first control pipeline or the second control pipeline to rotate forwards and backwards, the driving cab is driven to move, the reversing valve mechanism is mainly used for switching the oil conveying, the conveying direction of the pressure oil in the first control pipeline and the second control pipeline is changed, and the rotating direction of the hydraulic motor is controlled. The hydraulic motor rotates to drive the cab to move, so that the shielding of external objects and the structure of the vehicle under different external environments to the view field of the cab is reduced, and the driving and operation safety is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram of a control loop according to an embodiment of the present invention.
Wherein:
the hydraulic control system comprises a 1-energy accumulator, a 2-oil pipeline, a 3-pressure reducing valve, a 4-damping hole, a 5-three-position four-way valve, a 51-first connector, a 52-second connector, a 53-third connector, a 54-fourth connector, a 6-first control pipeline, a 7-second control pipeline, an 8-first double-hydraulic control one-way valve, a 9-second double-hydraulic control one-way valve, a 10-hydraulic motor, an 11-self-circulation pipeline, a 12-self-circulation control valve, a 13-first branch pipe, a 14-second branch pipe, a 15-third branch pipe, a 16-fourth branch pipe, a 17-fifth branch pipe and an 18-sixth branch pipe.
Detailed Description
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 it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, fig. 1 is a schematic diagram of a control loop according to an embodiment of the present invention.
The control circuit provided by the invention comprises an energy accumulator 1, an oil pipeline 2, a first control pipeline 6, a second control pipeline 7 and a hydraulic motor 10; the energy accumulator 1 is communicated with the oil conveying pipeline 2 and used for conveying pressure oil with certain pressure, the first control pipeline 6 and the second control pipeline 7 are respectively communicated with the oil conveying pipeline 2 through a reversing valve mechanism, the first control pipeline 6 and the second control pipeline 7 provide the pressure oil with different flow directions for the hydraulic motor 10, and then the hydraulic motor 10 is driven to complete forward rotation and reverse rotation. In order to switch the flow direction of the hydraulic oil, the first control pipeline 6 and the second control pipeline 7 are communicated with the oil pipeline 2 through a reversing valve mechanism, and when the reversing valve mechanism is communicated with the first control pipeline 6 and the oil pipeline 2, the pressure oil runs clockwise as shown in figure 1 to drive the hydraulic motor 10 to rotate forwards; when the reversing valve mechanism is switched to communicate the second control pipeline 7 and the oil conveying pipeline 2, the pressure oil flows along the anticlockwise direction shown in fig. 1 to drive the hydraulic motor 10 to rotate reversely, the hydraulic motor 10 is connected with the cab by means of the forward rotation and the reverse rotation of the hydraulic motor 10, the cab is driven to move to adjust the visual field of the cab, and the driving and operation safety is improved.
The control circuit and the cab-movable working vehicle provided by the invention are described in more detail in the following with reference to the accompanying drawings and specific embodiments.
In the embodiment shown in fig. 1, the accumulator 1 is a driving mechanism of the control circuit, and the accumulator 1 supplies pressure oil with a certain pressure to the hydraulic motor 10 through the oil pipeline 2 and the first control pipeline 6 or the second control pipeline 7 to drive the hydraulic motor 10 to rotate. The energy accumulator 1 can be arranged on the chassis of the vehicle and the like, and an oil return tank is arranged to be connected with the energy accumulator 1 to supply oil to the energy accumulator 1. The energy accumulator is connected with the oil pipeline 2, and the tail end of the oil pipeline 2 is provided with a reversing valve mechanism for switching oil supply to the first control pipeline 6 and the second control pipeline 7.
The reversing valve mechanism specifically comprises an electromagnetic reversing valve, a first double hydraulic control one-way valve 8 arranged on the first control pipeline 6 and a second double hydraulic control one-way valve 9 arranged on the second control pipeline 7. The electromagnetic directional valve is matched with the first double hydraulic control one-way valve 8 and the second double hydraulic control one-way valve 9 to switch the flowing direction of the pressure oil, and the specific switching working principle is as follows.
In the above embodiment, the electromagnetic directional valve is a three-position four-way valve 5, where the three-position four-way valve means that the valve body has three control positions or operating states, and the four-way valve means that the valve body has four ports. The three control positions of the three-position four-way valve 5 are named as a first position, a second position and a third position respectively; the four ports of the three-position four-way valve 5 are named a first port 51, a second port 52, a third port 53 and a fourth port 54, respectively. The first connection 51 is connected to the oil line 2, and the fourth connection 54 is connected to the return tank of the vehicle.
When the first side electromagnetic coil of the three-position four-way valve 5 is electrified, the three-position four-way valve 5 is in the first position, the first interface 51 is conducted with the second interface 52, the third interface 53 is conducted with the fourth interface 54, the pressure oil enters the first branch pipe 13 of the first control pipeline 6 through the first interface 51, the pressure oil flows to the fifth branch pipe 17 through the first branch pipe 13, the fifth branch pipe 17 and the fourth branch pipe 16 are closed, meanwhile, the pressure oil flows to the second double hydraulic control one-way valve 9 through the second branch pipe 14, so that the second double hydraulic control one-way valve 9 is switched to a state that the third branch pipe 15 is conducted with the sixth branch pipe 18, and the circulation process of the pressure oil in the whole control loop is as follows: the energy accumulator 1, the oil conveying pipeline 2, the first branch pipe 13, the fifth branch pipe, the hydraulic motor 10, the sixth branch pipe 18, the third branch pipe 15 and the oil return tank complete the driving of the positive rotation of the hydraulic motor 10.
When the coil on the second side of the three-position four-way valve 5 is electrified, the three-position four-way valve 5 is in the second position, the first connector 51 is communicated with the third connector 53, the second connector 52 is communicated with the fourth connector 54, the pressure oil flows to the sixth branch pipe 18 through the third branch pipe 15, and the space between the sixth branch pipe 18 and the third branch pipe 15 is closed; meanwhile, pressure oil flows to the first double-hydraulic-control one-way valve 8 through the third branch pipe 15, so that the fifth branch pipe 17 is communicated with the first branch pipe 13, the circulation process of the pressure oil of the whole control loop is that the energy accumulator 1, the oil conveying pipeline 2, the third branch pipe 15, the sixth branch pipe 18, the hydraulic motor 10, the fifth branch pipe 17, the first branch pipe 13 and the oil return tank complete the driving of the reverse rotation of the hydraulic motor 10, and the flow direction of the pressure oil is changed through the cooperative switching of the three-position four-way valve 5, the first control pipeline 6 and the second control pipeline 7, so that the rotation direction of the hydraulic motor 10 is changed.
When the three-position four-way valve 5 is in the third position, i.e., the neutral position, the three-position four-way valve 5 is only conducted through the first interface 51 and the fourth interface 54, the pressure oil in the oil pipeline 2 is directly conveyed to the oil return tank, the hydraulic motor 10 does not rotate, at this time, the cab and the chassis mechanism are locked, and the cab cannot move.
It should be noted that the three-position four-way valve 5 and the double-hydraulic-control one-way valve for controlling the conducting direction according to the incoming liquid direction are all common valve structures in the prior art, and the structures thereof are not expanded in detail here. The electromagnetic directional valve can adopt a three-position four-way valve 5, and can also be set into a three-position three-way valve or a two-position three-way valve according to requirements; when a three-way valve is used, a return pipe and a return valve connecting to a return tank may be provided at corresponding positions of the hydraulic motor 10, the first control line 6 and the second control line 7, and will not be expanded in detail here.
Further, in order to control the oil transportation pressure conveniently, a pressure detection mechanism is arranged in the energy accumulator 1, so that whether the current pressure meets the requirements of driving the hydraulic motor 10 to rotate and driving the cab to move or not is judged; further, a pressure reducing valve 3 and a damping orifice 4 are provided in the oil delivery pipe 2 to adjust the oil delivery pressure.
In another embodiment, in order to adjust the cab movement, a self-circulation pipeline 11 is arranged between the first control pipeline 6 and the second control pipeline 7 and communicated with the first control pipeline and the second control pipeline, and a self-circulation control valve 12 is arranged in the self-circulation pipeline 11. When the energy accumulator 1 fails and cannot operate, the oil conveying pipeline 2 cannot convey oil to the first control pipeline 6 and the second control pipeline 7, at the moment, a cab can be manually pushed to move, the cab is connected with the hydraulic motor 10, when pressure oil in the first control pipeline 6 and the second control pipeline 7 cannot circulate, the hydraulic motor 10 is difficult to rotate, the cab is not easy to move, the first control pipeline 6 and the second control pipeline 7 are connected through the self-circulation pipeline 11, the self-circulation control valve 12 is adjusted to enable the first control pipeline 6 and the second control pipeline 7 to communicate with a circulation loop, and self-circulation of the pressure oil in the first control pipeline 6 and the second control pipeline 7 is achieved. The self-circulation control valve 12 may be a two-position two-way solenoid valve, and is connected between the fifth branch pipe 17 and the sixth branch pipe 18.
The application also provides an engineering vehicle with a movable cab, which comprises the cab, a chassis mechanism and the control loop. The cab and the chassis are connected and positioned through the sliding rails, so that the cab can move linearly relative to the chassis mechanism, meanwhile, the cab is connected with the hydraulic motor 10 of the control loop, and the cab is driven by the hydraulic motor 10 to move linearly relative to the chassis mechanism. The hydraulic motor 10 is fixed on the upper side of the chassis mechanism, a gear is connected on an output shaft of the hydraulic motor 10, a rack matched with the gear can be arranged at the bottom of the cab, and the gear and the rack can be directly connected or can be in transmission connection through a transmission shaft.
In order to prevent the cab from excessively moving relative to the chassis mechanism, the track is also provided with a limiting mechanism, and the limiting mechanism can adopt limiting bolts and other mechanisms arranged at two ends of the track; in addition, still set up locking mechanical system between chassis mechanism and the driver's cabin, locking mechanical system can be dead with chassis mechanism and driver's cabin relative lock after the driver's cabin motion targets in place, avoids the driver's cabin to slide, and locking mechanical system can refer to the locking structure setting of manual brake, conveniently controls the position of adjusting the driver's cabin in the driver's cabin, and what is different is, the position that this locking structure locking is the slide rail.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The present invention provides a movable cab type construction vehicle and a control circuit thereof, which are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A control circuit is characterized by comprising an energy accumulator (1) for conveying pressure oil, an oil conveying pipeline (2) connected with the energy accumulator (1), a first control pipeline (6), a second control pipeline (7) and a hydraulic motor (10) for driving a cab to advance and retreat in a rotating mode;
the first control pipeline (6) and the second control pipeline (7) are communicated with the oil conveying pipeline (2) through a reversing valve mechanism, and the first control pipeline (6) and the second control pipeline (7) are communicated with the hydraulic motor (10);
when the reversing valve mechanism is communicated with the oil pipeline (2) and the first control pipeline (6), the pressure oil is used for driving the hydraulic motor (10) to rotate forwards; when the reversing valve mechanism is communicated with the oil conveying pipeline (2) and the second control pipeline (7), the pressure oil is used for driving the hydraulic motor (10) to rotate reversely.
2. Control circuit according to claim 1, characterized in that the said reversing valve means comprise an electromagnetic reversing valve, a first double pilot operated check valve (8) provided in the first control line (6) and a second double pilot operated check valve (9) provided in the second control line (7);
the electromagnetic directional valve is a three-position four-way valve (5), a first interface (51) is communicated with the energy accumulator (1), and a fourth interface (54) is used for connecting an oil tank;
when the three-position four-way valve (5) is at a first position, a second interface (52) of the three-position four-way valve (5) conducts the first interface (51), and the first double-hydraulic control one-way valve (8) conducts oil transportation; pushing the second double hydraulic control one-way valve (9) to conduct oil return, and conducting the fourth interface (54) through a third interface (53) of the three-position four-way valve (5);
when the three-position four-way valve (5) is at a second position, the third interface (53) conducts the first interface (51), and the second double-hydraulic control one-way valve (9) conducts oil transportation; pushing the first double hydraulic control one-way valve (8) to conduct return oil, and conducting the fourth interface (54) by the second interface (52);
when the three-position four-way valve (5) is in the third position, the first interface (51) conducts the fourth interface (54), and the first double hydraulic control one-way valve (8) and the second double hydraulic control one-way valve (9) are closed.
3. Control circuit according to claim 2, characterized in that the oil delivery line (2) is provided with a pressure reducing valve (3) and a damping orifice (4).
4. Control circuit according to claim 3, characterized in that the accumulator (1) is provided with a pressure detection mechanism.
5. The control circuit according to claim 4, characterized in that it further comprises a self-circulation line (11) communicating said first control line (6) and said second control line (7), said self-circulation line (11) being provided with a self-circulation control valve (12).
6. Control circuit according to claim 5, characterized in that the self-circulating control valve (12) is a two-position two-way solenoid valve.
7. A cab-displaceable work vehicle, comprising a cab, a chassis unit and a control circuit according to any of claims 1 to 6, the cab and the chassis unit being connected by a sliding track, the hydraulic motor (10) being arranged to drive the cab to move relative to the chassis unit.
8. A cab-displaceable working vehicle according to claim 7, characterised in that a gear is connected to the hydraulic motor (10), and the bottom of the cab is provided with a rack cooperating with the gear.
9. The engineering vehicle with movable cab according to claim 8, wherein the slide rail is provided with a limiting mechanism, and a locking mechanism is arranged between the chassis mechanism and the cab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010125187.3A CN111140555A (en) | 2020-02-27 | 2020-02-27 | Engineering vehicle with movable cab and control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010125187.3A CN111140555A (en) | 2020-02-27 | 2020-02-27 | Engineering vehicle with movable cab and control loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111140555A true CN111140555A (en) | 2020-05-12 |
Family
ID=70528128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010125187.3A Pending CN111140555A (en) | 2020-02-27 | 2020-02-27 | Engineering vehicle with movable cab and control loop |
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| Country | Link |
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| CN (1) | CN111140555A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253557A (en) * | 2020-10-30 | 2021-01-22 | 农业农村部南京农业机械化研究所 | Hydraulic driving system of crawler tractor |
-
2020
- 2020-02-27 CN CN202010125187.3A patent/CN111140555A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253557A (en) * | 2020-10-30 | 2021-01-22 | 农业农村部南京农业机械化研究所 | Hydraulic driving system of crawler tractor |
| CN112253557B (en) * | 2020-10-30 | 2023-01-24 | 农业农村部南京农业机械化研究所 | Hydraulic driving system of crawler tractor |
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