CN111891214A - Control system and method for rotary pump of cargo vehicle - Google Patents
Control system and method for rotary pump of cargo vehicle Download PDFInfo
- Publication number
- CN111891214A CN111891214A CN202010677108.XA CN202010677108A CN111891214A CN 111891214 A CN111891214 A CN 111891214A CN 202010677108 A CN202010677108 A CN 202010677108A CN 111891214 A CN111891214 A CN 111891214A
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- China
- Prior art keywords
- bevel gear
- steering
- rotary pump
- pump
- control system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/062—Details, component parts
- B62D5/063—Pump driven by vehicle engine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/065—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The application relates to a control system and a method for a rotary pump for a truck, which relate to the technical field of automobile steering, and the control system for the rotary pump for the truck comprises the following components: rotating the pump; an engine, the engine comprising a first bevel gear; a steering mechanism connected to a steering wheel; the transmission mechanism is connected with the steering mechanism and the rotating pump in a transmission way, and comprises a second bevel gear and a first adjusting component; the first adjusting assembly is used for meshing the second bevel gear with the first bevel gear when the steering mechanism steers so as to enable the rotary pump to rotate along with the engine; when the steering mechanism is turned back, the first adjusting component is used for controlling the second bevel gear to be separated from the first bevel gear. The control system and the control method for the rotary pump of the truck can control the working form of the rotary pump according to the current specific state, and improve the fuel economy of the engine while not influencing the dynamic property of the engine.
Description
Technical Field
The application relates to the technical field of automobile steering, in particular to a control system and a control method of a rotary pump for a truck.
Background
At present, a rotary pump of a heavy-duty dump truck is arranged at the front end or the rear end of an engine, and the rotary pump is connected with the engine by adopting gear meshing so as to realize stable transmission. However, the power performance of the engine is reduced because the rotating pump is connected with the engine gear under the working condition that the vehicle does not turn, and the engine is more oil-consuming and has poorer economy. In addition, when the vehicle steers at a low speed, the engine is in an idle speed or a low rotating speed working condition, and the rotating pump is connected with the engine and has a low rotating speed, so that the oil outlet pressure is low, and further the steering wheel is too heavy to rotate.
In the related art, the steering assist pressure in the hydraulic steering assist system is only related to the engine rotation speed, and whether the hydraulic pressure of the rotary pump needs to be increased or not cannot be judged according to whether the vehicle turns or not and the turning size, namely the steering wheel angle, so that when a driver turns a small turn, the steering pressure is too high, and when the driver turns a large turn, the steering pressure is too low, and the road condition information feedback effect is poor, so that the power performance of the engine is poor.
Disclosure of Invention
The embodiment of the application provides a control system and a control method of a rotary pump for a cargo vehicle, and aims to solve the problem that the working state of the rotary pump cannot be controlled according to whether the vehicle turns or not in the related technology.
The present application provides in a first aspect a rotary pump control system for a cargo vehicle, comprising:
rotating the pump;
an engine, the engine including a first helical gear;
a steering mechanism connected to a steering wheel;
a transmission mechanism connected with the steering mechanism and the rotary pump, wherein the transmission mechanism comprises a second bevel gear and a first adjusting component;
the first adjusting unit is configured to engage the second helical gear with the first helical gear when the steering mechanism is steering, so that the rotary pump rotates with the engine; when the steering mechanism is turned back, the first adjusting component is used for controlling the second bevel gear to be separated from the first bevel gear.
In some embodiments, the first adjusting component comprises:
a first fork having one end connected to the second bevel gear for pushing the second bevel gear to engage with the first bevel gear when the steering mechanism is steering;
a first return mechanism configured to push the first fork to disengage the second bevel gear from the first bevel gear when the steering mechanism is turned back.
In some embodiments, the steering mechanism includes:
the steering column is connected with a steering wheel;
and a control mechanism for generating a pressure signal and an angle signal when the steering column is steering, and controlling the first adjustment assembly to engage the second helical gear with the first helical gear when the pressure signal is greater than a first set value or the angle signal is greater than a second set value, and for resetting the pressure signal and the angle signal to zero when the steering column is returning.
In some embodiments, the control mechanism comprises:
a torque sensor provided on the steering column, the torque sensor being configured to output a pressure signal when the steering column rotates, and to return the pressure signal to zero when the steering column is turned back;
a steering angle sensor provided on the steering column, the steering angle sensor being configured to output an angle signal when the steering column rotates, and to return the angle signal to zero when the steering column is returned;
the electronic control pressure pump is used for receiving the pressure signal and the angle signal and works when the pressure signal is greater than a first set value or the angle signal is greater than a second set value;
and the oil supply pipeline is internally provided with a two-way valve and a booster valve which are communicated with each other, the two-way valve is communicated with the electric control pressure pump, and when the electric control pressure pump works, the booster valve is communicated with a first oil way formed by the first adjusting assembly.
In some embodiments, the rotating pump includes a pulley, the transmission mechanism includes an intermediate shaft and a bevel wheel, the bevel wheel and the second bevel wheel are both sleeved on the intermediate shaft, and the bevel wheel and the pulley are in transmission connection through a steel belt.
In some embodiments, the cone pulley comprises a movable cone and a fixed cone, and the transmission mechanism is further provided with a second adjusting component capable of adjusting the axial displacement of the movable cone;
the transmission ratio between the rotary pump and the transmission mechanism is changed along with the position of the movable conical disc.
In some embodiments, a second oil path is formed between the second adjusting assembly and the pressure increasing valve, and when the pressure signal is greater than a first set value and the angle signal is greater than a second set value, the electrically controlled pressure pump is configured to increase the pressure of the oil supply line to connect the second oil path.
In some embodiments, the second adjusting component comprises:
one end of the second shifting fork is connected with the movable conical disc, and the second shifting fork is used for pushing the movable conical disc to move towards the fixed conical disc when the second oil path is communicated;
and a second return mechanism configured to push the second fork to move the movable cone plate in a direction away from the fixed cone plate after the second oil path is disconnected.
In some embodiments, the second oil path is provided with an electromagnetic valve, and the electromagnetic valve is turned off when the vehicle speed is greater than a third set value.
The second aspect of the application provides a control method based on the control system of the rotary pump for the truck, which comprises a steering step and a returning step;
the steering step includes:
when the steering mechanism steers, the first adjusting component meshes the second bevel gear with the first bevel gear so as to enable the rotary pump to rotate along with the engine;
the returning step comprises:
after the steering mechanism is aligned, the first adjusting assembly pushes the second bevel gear and separates the second bevel gear from the first bevel gear.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a control system and a control method of a rotary pump for a cargo vehicle, wherein a transmission mechanism is in transmission connection with the rotary pump, an engine comprises a first bevel gear, a first adjusting component and a second bevel gear are arranged on the transmission mechanism, when the engine rotates and a steering mechanism turns, the first adjusting component enables the second bevel gear to be meshed with the first bevel gear, the transmission mechanism rotates along with the engine, further the rotary pump also rotates along with the engine, the oil pressure of the rotary pump is increased, when the engine rotates and the steering mechanism turns, the first adjusting component enables the second bevel gear to be separated from the first bevel gear, the transmission mechanism does not rotate along with the engine, and the rotary pump does not rotate at the moment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a control system of a rotary pump for a truck according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of the second bevel gear and the first bevel gear in fig. 1.
Reference numerals:
1-rotating a pump, 11-belt wheel, 12-steel belt;
2-engine, 21-first bevel gear;
3-transmission mechanism, 31-second bevel gear, 32-middle shaft, 33-cone pulley, 331-movable cone disc, 332-fixed cone disc;
4-a first adjusting component, 41-a first shifting fork, 42-a first return mechanism;
5-a second adjusting component, 51-a second shifting fork, 52-a second return mechanism;
6-a steering mechanism, 61-a steering column, 62-a torque sensor, 63-an electronic control pressure pump, 64-a two-way valve, 65-a booster valve and 66-a corner sensor;
7-electromagnetic valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
The embodiment of the application provides a control system and a control method of a rotary pump for a cargo vehicle, which can solve the problem that the working state of the rotary pump cannot be controlled according to whether the vehicle turns.
As shown in fig. 1 and 2, the rotary pump control system for a cargo vehicle of the present embodiment includes a rotary pump 1, an engine 2, a steering mechanism 6, and a transmission mechanism 3.
The engine 2 includes a first helical gear 21. The transmission mechanism 3 is connected with the steering mechanism 6 and is also in transmission connection with the rotary pump 1, and the transmission mechanism 3 further comprises a second bevel gear 31 and a first adjusting component 4.
The steering mechanism 6 is connected to a steering wheel, and the first adjustment unit 4 is configured to engage the second bevel gear 31 with the first bevel gear 21 when the steering mechanism 6 is steering, so that the rotary pump 1 rotates with the engine 2. The first adjustment assembly 4 is also used to control the second bevel gear 31 to disengage from the first bevel gear 21 when the steering mechanism 6 is turned back, so that the rotary pump 1 does not rotate with the engine 2.
The utility model provides a cargo vehicle is with changeing pump control system, when engine 2 rotates and steering mechanism 6 turns to, first adjusting part 4 makes second helical gear 31 and first helical gear 21 mesh, drive mechanism 3 rotates along with engine 2, and then make changeing pump 1 also rotate along with engine 2, in order to increase the oil pressure that changes pump 1, when engine 2 rotates and steering mechanism 6 returns, first adjusting part 4 makes second helical gear 31 and first helical gear 21 break away from, drive mechanism 3 does not rotate along with engine 2, it does not rotate to change pump 1 this moment, therefore, can be according to the work form of current concrete state control changeing pump, when having realized not influencing engine dynamic, improve the fuel economy of engine.
Further, the first adjusting assembly 4 includes a first fork 41 and a first return mechanism 42.
One end of the first fork 41 is connected to the second bevel gear 31, and the first fork 41 is used for pushing the second bevel gear 31 to engage with the first bevel gear 21 when the steering mechanism 6 is steering.
The first return mechanism 42 is configured to push the first fork 41 to disengage the second bevel gear 31 from the first bevel gear 21 when the steering mechanism 6 is returned.
In this embodiment, the first returning mechanism 42 is a compression spring, one end of the compression spring is fixed to the first fork 41, and after the steering mechanism 6 returns, the first fork 41 returns under the elastic force of the compression spring.
Preferably, the steering mechanism 6 includes a steering column 61 and a control mechanism.
The steering column 61 is connected to a steering wheel. The control mechanism is used for generating a pressure signal and an angle signal when the steering column 61 steers, and when the pressure signal is greater than a first set value or the angle signal is greater than a second set value, the control mechanism controls the first adjusting assembly 4 to push the second bevel gear 31 so that the second bevel gear 31 is meshed with the first bevel gear 21. The control mechanism is also configured to return the pressure signal and the angle signal to zero when the steering column 61 is turned back.
In this embodiment, the first setting value may be set according to the vehicle direction aligning torque.
Further, the control mechanism includes a torque sensor 62, a rotation angle sensor 66, an electrically controlled pressure pump 63, and an oil supply line.
A torque sensor 62 is provided on the steering column 61, and the torque sensor 62 is configured to output a pressure signal to an electronically controlled pressure pump 63 when the steering column 61 is rotated. The torque sensor 62 is also used to zero the pressure signal when the steering column 61 is back.
The steering angle sensor 66 is provided on the steering column 61, and the steering angle sensor 66 is configured to output an angle signal to the electronically controlled pressure pump 63 when the steering column 61 is rotated. The rotation angle sensor 66 is also used to return the angle signal to zero when the steering column 61 is back.
The electrically controlled pressure pump 63 is adapted to receive the pressure signal and the angle signal. When the pressure signal or the angle signal is not 0, the electronically controlled pressure pump 63 is activated. When the pressure signal is greater than the first set value or the angle signal is greater than the second set value, the electronically controlled pressure pump 63 starts to operate.
The oil supply pipeline is provided with a two-way valve 64 and a pressure increasing valve 65 which are communicated with each other, the two-way valve 64 is communicated with the electric control pressure pump 63, when the electric control pressure pump 63 works, hydraulic oil in the electric control pressure pump 63 enters the pressure increasing valve 65 through the two-way valve 64, and then the pressure increasing valve 65 is communicated with a first oil path formed by the first adjusting component 4 to drive the first shifting fork 41 to move. When the pressure signal is not greater than the first set value and the angle signal is not greater than the second set value, the electrically controlled pressure pump 63 stops working, and the hydraulic oil in the pressure increasing valve 65 flows back to the electrically controlled pressure pump 63, so that the first oil path between the pressure increasing valve 65 and the first adjusting assembly 4 is disconnected.
Preferably, the rotary pump 1 includes a pulley 11, and the transmission mechanism 3 further includes an intermediate shaft 32 and a conical pulley 33, and both ends of the intermediate shaft 32 are fixed by a bearing respectively. The conical pulley 33 and the second bevel gear 31 are both sleeved on the intermediate shaft 32, and the conical pulley 33 and the belt pulley 11 are in transmission connection through a steel belt 12. The rotary pump 1 is in transmission connection with the transmission mechanism 3 through the steel belt 12, and has the advantages of simple structure, simple and convenient manufacture and maintenance, stable transmission and low noise.
In this embodiment, the cone pulley 33 includes a movable cone 331 and a fixed cone 332 disposed opposite to each other, and the transmission mechanism 3 is further provided with a second adjustment assembly 5 capable of adjusting the axial displacement of the movable cone 331.
The transmission ratio between the rotary pump 1 and the transmission mechanism 3 varies depending on the position of the movable cone 331. When the second adjusting component 5 pushes the movable conical disc 331 to move towards the fixed conical disc 332, the transmission ratio between the rotary pump 1 and the transmission mechanism 3 is increased, the rotating speed of the rotary pump 1 is increased, and the oil outlet pressure is increased.
Further, a second oil path is formed between the second adjusting assembly 5 and the pressure increasing valve 65, and when the pressure signal is greater than the first set value and the angle signal is greater than the second set value, the electrically controlled pressure pump 63 is configured to increase the pressure of the oil supply line, so that the second oil path is connected, and the second adjusting assembly 5 is driven to move. When the pressure signal is not greater than the first set value or the angle signal is not greater than the second set value, the electrically controlled pressure pump 63 reduces the pressure of the oil supply line, so that the second oil path between the pressure increasing valve 65 and the second adjusting unit 5 is cut off.
In this embodiment, the second adjusting assembly 5 includes a second fork 51 and a second return mechanism 52.
One end of the second fork 51 is connected to the movable cone 331, the other end of the second fork 51 is connected to a second oil path, and the second fork 51 is used for pushing the movable cone 331 to move toward the fixed cone 332 when the second oil path is connected.
The second returning mechanism 52 is configured to push the second fork 51 to move the movable cone 331 in a direction away from the fixed cone 332 after the second oil path is cut off, thereby reducing the transmission ratio between the rotary pump 1 and the transmission mechanism 3.
In this embodiment, the second return mechanism 52 is a compression spring, one end of the compression spring is fixed to the second fork 51, and when the steering angle of the steering mechanism 6 is smaller than the angle threshold, the second fork 51 returns under the elastic force of the compression spring. In this embodiment, the angle threshold is set according to the spline clearance of the steering column of the steering wheel and the transmission efficiency.
Preferably, the second oil path is further provided with an electromagnetic valve 7, and the electromagnetic valve 7 is configured to be turned off when the vehicle speed is greater than a third set value. And the third set value is set according to the normal bending speed of the truck on the conventional road.
In the embodiment, the third set value is 20km/h, so that when the vehicle speed exceeds 20km/h, the electromagnetic valve 7 is closed, and the second oil way is disconnected, so that the problem that the rotating speed of a steering wheel is too high when a driver lightly beats the vehicle during acceleration is avoided, and the driving safety of the driver is guaranteed.
The embodiment of the application also provides a control method based on the control system of the rotary pump for the truck, and the control method comprises a steering step and a returning step.
The steering step includes:
when the steering mechanism 6 is steering, the first adjusting assembly 4 engages the second bevel gear 31 with the first bevel gear 21 to rotate the rotary pump 1 with the engine 2.
The returning step comprises:
after the steering mechanism 6 is aligned, the first adjusting unit 4 pushes the second bevel gear 31 to separate the second bevel gear 31 from the first bevel gear 21.
The steering mechanism 6 includes a steering column 61 and a control mechanism. The control mechanism comprises a torque sensor 62, an electric control pressure pump 63, a rotation angle sensor 66 and an oil supply pipeline. The oil supply line is provided with a two-way valve 64 and a pressure increasing valve 65 which are communicated with each other.
In this embodiment, when the steering column 1 rotates left and right, the generated torque and angle are transmitted to the electrically controlled pressure pump 63 through the torque sensor 62 and the rotation angle sensor 66, respectively, to control the opening and closing of the electrically controlled pressure pump 4.
Specifically, when the vehicle turns a small curve and the steering column starts to turn, the torque is small, the turning angle is small, and the electric control pressure pump is started but does not work.
When the steering column 1 continues to rotate, if the pressure signal generated by the torque sensor 62 is greater than the first set value, the electronic control pressure pump 63 starts to operate, the hydraulic oil in the electronic control pressure pump 63 flows into the pressure increasing valve 65 through the two-way valve 64, and because the steering wheel angle is small when steering is started, the angle signal acquired by the steering angle sensor 66 is smaller than or equal to the second set value at this time, the operating pressure of the electronic control pressure pump 63 is small, so that the pressure increasing valve 6 is only connected with the first oil path, and the second oil path is in a disconnected state. The first oil path is communicated with the first shifting fork 41, drives the second bevel gear 31 to be meshed with the first bevel gear 21 of the engine 2, and the engine 2 drives the intermediate shaft 32 to rotate, so that the rotary pump 1 is rotated through the steel belt 12. At the moment, the rotating speed of the rotary pump 1 is determined by the rotating speed of the engine 2, and the transmission ratio is small, so that normal bending is met.
When the vehicle continues to turn, the angle of the steering column 1 is increased, the angle signal generated by the rotation angle sensor 66 is greater than the second set value, and the pressure signal generated by the torque sensor 62 is still greater than the first set value, the working pressure of the electric pressure pump 4 is increased, the pressure in the oil supply pipeline is increased, the pressure in the pressure increasing valve 65 is increased, the second oil path is communicated, the second shifting fork 51 is driven, the movable conical disc 331 moves towards the fixed conical disc 332, the transmission ratio between the transmission mechanism 3 and the rotating pump shaft is increased, and the rotating speed of the rotating pump is increased. At the moment, the rotating speed of the rotary pump 1 is determined by the rotating speed of the engine 1 and the angle of the steering wheel, so that when the vehicle turns at low speed, even if the engine 2 rotates at an idle working condition or at low speed, the rotating speed of the rotary pump 1 can be increased according to the angle of the steering wheel, the rotating speed of the rotary pump 1 is larger than that of the engine 1, the turning is lighter, and a driver can obtain better road feel.
If the torque of the steering column 1 is reduced to a state that the pressure signal is not greater than the first set value and the angle signal is still greater than the second set value, the working pressure of the electrically controlled pressure pump 63 is reduced, so that the hydraulic oil in the second oil path flows back, the second oil path is disconnected, and the second shifting fork 51 is rebounded to the initial position by the second return mechanism 52.
If the rotation angle of the steering column 1 is reduced to the value that the angle signal is not larger than the second set value and the pressure signal is still larger than the first set value, the working pressure of the electrically controlled pressure pump 63 is reduced, so that the second oil path is disconnected.
When the pressure signal is not greater than the first set value and the angle signal is not greater than the second set value, the pressure of the electronic control pressure pump 63 is reduced to be out of work, at the moment, hydraulic oil in the first oil path flows back, the first oil path is disconnected, the first shifting fork 41 is rebounded to the initial position by the first return mechanism 42, the second bevel gear 31 is separated from the first bevel gear 21, the engine is separated from the transmission mechanism 3, at the moment, the rotating pump does not rotate, and the fuel economy of the engine is better.
When the vehicle returns to the straight line and the steering wheel returns to the original position, the pressure signal and the angle signal both return to zero.
In this embodiment, the electrically controlled pressure pump 63 can be controlled to be turned on and off by signals of the left and right turn lamps. The electrically controlled pressure pump 63 is turned on when receiving a turn signal from a turn signal lamp and turned off when not receiving a turn signal.
The control method of the embodiment is applicable to the control systems, and can judge the torque and the rotation angle of the steering column 1 through the torque sensor and the rotation angle sensor, namely, the pressure pump is controlled to be turned on and off and the power of the electric control pressure pump is adjusted according to the conditions of the steering force and the steering angle of the steering wheel; the oil outlet pressure of the rotary pump 1 is changed according to the angle requirement of the steering wheel, and the larger the required angle is, the larger the pressure of the electric control pressure pump is, and the larger the rotating speed of the rotary pump 1 is.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A control system of a rotary pump for a truck, characterized by comprising:
a rotary pump (1);
an engine (2), the engine (2) comprising a first bevel gear (21);
a steering mechanism (6) connected to a steering wheel;
the transmission mechanism (3) is connected with the steering mechanism (6) and is also in transmission connection with the rotating pump (1), and the transmission mechanism (3) comprises a second bevel gear (31) and a first adjusting component (4);
the first adjusting assembly (4) is used for meshing the second bevel gear (31) with the first bevel gear (21) when the steering mechanism (6) steers so as to enable the rotary pump (1) to rotate along with the engine (2); when the steering mechanism (6) is in a return state, the first adjusting assembly (4) is used for controlling the second bevel gear (31) to be separated from the first bevel gear (21).
2. The rotary pump control system for utility vehicles according to claim 1, characterized in that the first adjustment assembly (4) comprises:
a first shifting fork (41), one end of which is connected with the second bevel gear (31) and is used for pushing the second bevel gear (31) to be meshed with the first bevel gear (21) when the steering mechanism (6) steers;
a first return mechanism (42) configured to push the first fork (41) to disengage the second helical gear (31) from the first helical gear (21) when the steering mechanism (6) is returned.
3. The steering pump control system for utility vehicles according to claim 1, wherein the steering mechanism (6) comprises:
a steering column (61) connected to a steering wheel;
and the control mechanism is used for generating a pressure signal and an angle signal when the steering column (61) steers and controlling the first adjusting assembly (4) to enable the second bevel gear (31) to be meshed with the first bevel gear (21) when the pressure signal is larger than a first set value or the angle signal is larger than a second set value, and the control mechanism is also used for enabling the pressure signal and the angle signal to be reset to zero when the steering column (61) is back.
4. A rotary pump control system for a cargo truck according to claim 3, wherein said control mechanism comprises:
a torque sensor (62) provided on the steering column (61), the torque sensor (62) being configured to output a pressure signal when the steering column (61) is rotating, and to return the pressure signal to zero when the steering column (61) is returning;
a steering angle sensor (66) provided on the steering column (61), the steering angle sensor (66) being configured to output an angle signal when the steering column (61) is rotated, and to return the angle signal to zero when the steering column (61) is returned;
the electronic control pressure pump (63) is used for receiving the pressure signal and the angle signal and works when the pressure signal is greater than a first set value or the angle signal is greater than a second set value;
the oil supply device comprises an oil supply pipeline, wherein a two-way valve (64) and a booster valve (65) which are communicated with each other are arranged in the oil supply pipeline, the two-way valve (64) is communicated with the electric control pressure pump (63), and when the electric control pressure pump (63) works, the booster valve (65) is communicated with a first oil way formed by the first adjusting assembly (4).
5. A rotary pump control system for a cargo vehicle according to claim 4, wherein:
the rotary pump (1) comprises a belt wheel (11), the transmission mechanism (3) comprises an intermediate shaft (32) and a conical disc wheel (33), the conical disc wheel (33) and the second bevel gear (31) are both sleeved on the intermediate shaft (32), and the conical disc wheel (33) is in transmission connection with the belt wheel (11) through a steel belt (12).
6. The rotary pump control system for cargo vehicle according to claim 5, wherein:
the cone disc wheel (33) comprises a movable cone disc (331) and a fixed cone disc (332), and the transmission mechanism (3) is also provided with a second adjusting component (5) capable of adjusting the axial displacement of the movable cone disc (331);
the transmission ratio between the rotary pump (1) and the transmission mechanism (3) is changed along with the position of the movable conical disc (331).
7. A rotary pump control system for a cargo vehicle according to claim 6, wherein:
and a second oil path is formed between the second adjusting assembly (5) and the pressure increasing valve (65), and when the pressure signal is greater than a first set value and the angle signal is greater than a second set value, the electronic control pressure pump (63) is used for increasing the pressure of the oil supply pipeline to enable the second oil path to be communicated.
8. A motor-pump control system for a truck according to claim 6, characterized in that said second adjustment assembly (5) comprises:
one end of the second shifting fork (51) is connected with the movable conical disc (331), and the second shifting fork (51) is used for pushing the movable conical disc (331) to move towards the fixed conical disc (332) when the second oil path is communicated;
and a second return mechanism (52) configured to push the second fork (51) to move the movable cone (331) in a direction away from the fixed cone (332) after the second oil path is disconnected.
9. The rotary pump control system for cargo vehicle of claim 8, wherein: and the second oil way is provided with an electromagnetic valve (7), and the electromagnetic valve (7) is disconnected when the vehicle speed is greater than a third set value.
10. A control method based on the control system of the rotary pump for the utility vehicle according to any one of claims 1 to 9, characterized by comprising a steering step and a returning step;
the turning step includes:
when the steering mechanism (6) steers, the first adjusting component (4) meshes the second bevel gear (31) with the first bevel gear (21) so as to enable the rotary pump (1) to rotate along with the engine (2);
the returning step comprises the following steps:
after the steering mechanism (6) is aligned, the first adjusting component (4) pushes the second bevel gear (31) and enables the second bevel gear (31) to be separated from the first bevel gear (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010677108.XA CN111891214A (en) | 2020-07-14 | 2020-07-14 | Control system and method for rotary pump of cargo vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010677108.XA CN111891214A (en) | 2020-07-14 | 2020-07-14 | Control system and method for rotary pump of cargo vehicle |
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| CN111891214A true CN111891214A (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010677108.XA Withdrawn CN111891214A (en) | 2020-07-14 | 2020-07-14 | Control system and method for rotary pump of cargo vehicle |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031859U (en) * | 1988-05-14 | 1989-02-01 | 郝雄义 | Hydraulic system eliminated hydraulic impaction |
| KR20070082737A (en) * | 2006-02-17 | 2007-08-22 | 기아자동차주식회사 | Flux control system of power steering pump |
| US20090133953A1 (en) * | 2007-11-28 | 2009-05-28 | Delphi Technologies, Inc. | Power steering system having a variable-ratio drive mechanism for a vehicle |
| CN104494693A (en) * | 2014-12-15 | 2015-04-08 | 东北大学 | Mechanical hydraulic power-assisted steering adaptive energy-saving device |
| CN104843056A (en) * | 2014-07-08 | 2015-08-19 | 北汽福田汽车股份有限公司 | Hydraulic power steering system, vehicle and steering method of hydraulic power steering system |
| CN107117534A (en) * | 2017-03-28 | 2017-09-01 | 武汉船用机械有限责任公司 | A kind of hydraulic control system of crane |
-
2020
- 2020-07-14 CN CN202010677108.XA patent/CN111891214A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031859U (en) * | 1988-05-14 | 1989-02-01 | 郝雄义 | Hydraulic system eliminated hydraulic impaction |
| KR20070082737A (en) * | 2006-02-17 | 2007-08-22 | 기아자동차주식회사 | Flux control system of power steering pump |
| US20090133953A1 (en) * | 2007-11-28 | 2009-05-28 | Delphi Technologies, Inc. | Power steering system having a variable-ratio drive mechanism for a vehicle |
| CN104843056A (en) * | 2014-07-08 | 2015-08-19 | 北汽福田汽车股份有限公司 | Hydraulic power steering system, vehicle and steering method of hydraulic power steering system |
| CN104494693A (en) * | 2014-12-15 | 2015-04-08 | 东北大学 | Mechanical hydraulic power-assisted steering adaptive energy-saving device |
| CN107117534A (en) * | 2017-03-28 | 2017-09-01 | 武汉船用机械有限责任公司 | A kind of hydraulic control system of crane |
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Application publication date: 20201106 |