Driving cab lifting attitude control system and control method and vehicle

Abstract

The invention relates to a cab lifting attitude control system and method and a vehicle, the cab lifting attitude control system comprises a front overhang airbag damper assembly, the front overhang airbag damper assembly is connected with an air inlet pipeline, and the air inlet pipeline is connected with a front overhang electromagnetic valve; the lifting oil cylinder is connected with an oil pump, and the oil pump is provided with an oil pump electromagnetic valve; the controller is in signal connection with the oil pump, the controller is in signal connection with the front overhang electromagnetic valve and the oil pump electromagnetic valve, and the controller is used for synchronously controlling the oil pump electromagnetic valve to be switched to a lifting gear and controlling the front overhang electromagnetic valve to cut off an air inlet source of the air inlet pipeline when receiving a lifting signal. By arranging the front overhang electromagnetic valve in the air inlet pipeline connected with the front overhang airbag damper assembly and installing the oil pump electromagnetic valve in the oil pump, connection and disconnection of the air inlet pipeline can be controlled through simple arrangement, arrangement space is saved, and the problems that in the related technology, a two-position two-way valve is additionally arranged, an air path is complex in arrangement, and cost is low are solved. And the technical problem is difficult to realize due to the limitation of the arrangement space.

Description

Technical Field

[0001] The present application relates to the field of automobile products and technologies, and in particular to a cab lifting posture control system, a control method and a vehicle. Background Art

[0002] At present, during the flipping process of some heavy-duty cabs, as the piston rod of the cylinder extends, the cab may move downward under the influence of gravity. The downward movement of the cab will drive the height valve to inflate the front suspension airbag shock absorber assembly, causing the cab to move upward again. In the process of flipping the cab to the end point, the above action may be repeated 3 to 5 times. The repeated rising and falling process of the cab will cause a subjective "cab flip nodding" phenomenon, affecting the user's perception of use.

[0003] In the related art, the "cab flip nodding" phenomenon generated during the cab flipping process is effectively prevented by cutting off the inflation air path of the front suspension air bag shock absorber assembly during the cab flipping process. In order to enable the cab flipping and the cutting off of the inflation line of the front suspension air bag shock absorber assembly to be carried out simultaneously, a two-position two-way valve is usually added at the rear suspension hydraulic lock, so that the air intake source of the front suspension air bag shock absorber assembly can be synchronously cut off when the oil pump reversing switch is switched to the cab lifting state.

[0004] However, adding a two-position two-way valve to the rear suspension hydraulic lock requires a separate air path from the two-position two-way valve to the front suspension airbag shock absorber assembly. The air path layout is complicated, and adding a two-position two-way valve to the hydraulic lock will also complicate the structure of the hydraulic lock assembly, which may be difficult to implement due to layout space limitations. Summary of the invention

[0005] The present application provides a cab lifting posture control system, control method and vehicle, which can solve the technical problems in the related art that a two-position two-way valve is added to the rear suspension hydraulic lock, and the air circuit needs to be separately led from the two-position two-way valve to the front suspension airbag shock absorber assembly, the air circuit layout is complicated, and the addition of a two-position two-way valve to the hydraulic lock will also make the structure of the hydraulic lock assembly complicated, and it may also be difficult to achieve due to the limitation of the layout space.

[0006] In a first aspect, an embodiment of the present application provides a cab lifting posture control system, which includes: a front suspension airbag shock absorber assembly, the front suspension airbag shock absorber assembly is connected to an air intake pipeline, and the air intake pipeline is connected to a front suspension solenoid valve;

[0007] A lifting cylinder, the lifting cylinder is connected to an oil pump, and the oil pump is equipped with an oil pump solenoid valve; a controller, the controller is connected to the oil pump signal, and the controller is respectively connected to the front suspension solenoid valve and the oil pump solenoid valve signal, and the controller is used to synchronously control the oil pump solenoid valve to switch to the lifting gear when receiving a lifting signal, and control the front suspension solenoid valve to cut off the intake source of the intake pipe.

[0008] In combination with the first aspect, in one embodiment, the lifting posture control system also includes a remote controller, which is provided with a Bluetooth module. The remote controller is wirelessly connected to the controller via the Bluetooth module, and the remote controller is used to send a lifting signal and a falling signal to the controller via the Bluetooth module.

[0009] In combination with the first aspect, in one embodiment, the remote control is provided with a first button and a second button. When the first button is pressed, the controller is controlled to send a lifting signal to the oil pump solenoid valve, and synchronously send a cut-off signal to the front suspension solenoid valve. When the second button is pressed, the controller is controlled to send a fall-back signal to the oil pump solenoid valve. The remote control is also provided with a drive button. When the drive button is pressed, the remote control sends an oil pump motor working signal to the controller.

[0010] In combination with the first aspect, in one implementation, the remote control is further provided with a first indicator light and a second indicator light, and the first indicator light and the second indicator light are respectively connected to the controller signal.

[0011] In combination with the first aspect, in one embodiment, the lifting posture control system also includes a height valve, the intake pipe includes a first pipe, one end of the first pipe is connected to the height valve, and the other end is used to connect to the air source of the whole vehicle, and the front suspension solenoid valve is installed on the first pipe; the intake pipe also includes a second pipe, one end of the second pipe is connected to the height valve, and the other end is connected to the front suspension airbag shock absorber assembly.

[0012] In combination with the first aspect, in one embodiment, the lifting posture control system also includes a frame, one end of the front suspension airbag shock absorber assembly is installed on the frame through a shock absorber lower bracket, and the other end is installed with a front suspension upper bracket; a front suspension joint bracket is fixed to the longitudinal beam of the frame, and the front suspension joint bracket is installed on a side of the longitudinal beam close to the shock absorber lower bracket, and the height valve is installed on the front suspension joint bracket.

[0013] In combination with the first aspect, in one embodiment, the height valve includes a first front suspension height valve and a second front suspension height valve, and the first front suspension height valve and the second front suspension height valve are symmetrically arranged along the axis of the frame; the front suspension solenoid valve is installed in the middle part of the first cross beam of the frame, and the front suspension solenoid valve is respectively connected to the first front suspension height valve and the second front suspension height valve through the second pipeline.

[0014] In the second aspect, an embodiment of the present application provides a control method for the lifting posture control system of the above-mentioned cab, and the control method includes the following steps: when a lifting signal is received, the oil pump solenoid valve is controlled to switch to the lifting gear, and the front suspension solenoid valve is synchronously controlled to cut off the air intake source of the intake pipe; the motor of the oil pump is controlled to start, the piston rod of the lifting cylinder is driven to extend, and the cab is driven to lift.

[0015] In combination with the second side, in one embodiment, the control method also includes: when a fall-back signal is received, controlling the oil pump solenoid valve to switch to the fall-back gear position; controlling the oil pump motor to turn on, driving the piston rod of the lifting cylinder to retract, and driving the cab to fall back.

[0016] On the third side, an embodiment of the present application provides a vehicle, which includes the above-mentioned cab lifting posture control system.

[0017] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0018] By setting a front suspension solenoid valve in the intake pipe connected to the front suspension airbag shock absorber assembly and installing an oil pump solenoid valve in the oil pump, the controller can synchronously control the oil pump solenoid valve to switch to the lifting gear and control the front suspension solenoid valve to cut off the air intake source of the intake pipe when receiving a lifting signal. The air intake end of the intake pipe is cut off during the lifting of the cab. This arrangement can control the on-off of the intake pipe through simple layout, saving layout space, and solving the technical problem in the related technology that the air circuit layout of adding a two-position two-way valve is complicated and may be difficult to achieve due to layout space limitations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the connection between the oil pump and the lifting switch in the related art;

[0021] Figure 2It is a schematic diagram of the three-dimensional structure of a lifting switch in the related art;

[0022] Figure 3 A schematic diagram of a three-dimensional structure of a lifting posture control system from one perspective in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the three-dimensional structure of the lifting posture control system in another perspective in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the three-dimensional structure of the lifting posture control system in another perspective in an embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the oil pump solenoid valve installed on the oil pump in the embodiment of the present application;

[0026] Figure 7 This is a front view of the remote control in the embodiment of the present application;

[0027] Figure 8 A side view of the remote control in the embodiment of the present application;

[0028] Fig. 9 This is a schematic diagram of the three-dimensional structure of the controller in the embodiment of the present application;

[0029] Fig.10 It is a schematic diagram of the process structure of the cab lifting process in the application embodiment;

[0030] Fig.11 It is a schematic diagram of the process of the lifting method in the application embodiment.

[0031] In the figure:

[0032] 1. Front suspension air bag shock absorber assembly; 11. Left front suspension air bag shock absorber assembly; 12. Right front suspension air bag shock absorber assembly;

[0033] 2. Intake pipeline; 21. First pipeline; 22. Second pipeline;

[0034] 3. Front suspension solenoid valve;

[0035] 4. Lifting cylinder;

[0036] 5. Oil pump; 51. Oil pump solenoid valve;

[0037] 6. Remote control; 61. First button; 62. Second button; 63. Drive button; 64. Emergency stop button; 65. First indicator light; 66. Second indicator light;

[0038] 7. Height valve; 71. First front overhang height valve; 72. Second front overhang height valve;

[0039] 8. Vehicle frame; 81. Lower bracket of shock absorber; 82. Upper bracket of front suspension; 83. Bracket of front suspension assembly; 84. First cross beam; 85. Longitudinal beam;

[0040] 9. Controller;

[0041] 10. Lift switch. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] The embodiment of the present application provides a lifting posture control system for a cab, which can solve the technical problems in the related technology of adding a two-position two-way valve at the rear suspension hydraulic lock, and at the same time, it is necessary to separately lead the air circuit from the two-position two-way valve to the front suspension airbag shock absorber assembly, the air circuit layout is complicated, and the addition of a two-position two-way valve to the hydraulic lock will also make the structure of the hydraulic lock assembly complicated, and it may also be difficult to achieve due to the limitation of the layout space.

[0044] See also Figure 3 and Figure 6 As shown, a cab lifting posture control system provided by an embodiment of the present application may include: a front suspension airbag shock absorber assembly 1, wherein the front suspension airbag shock absorber assembly 1 is connected to an air intake line 2, and the air intake line 2 is connected to a front suspension solenoid valve 3; a lifting cylinder 4, wherein the lifting cylinder 4 is connected to an oil pump 5, and the oil pump 5 is equipped with an oil pump solenoid valve 51; a controller 9, wherein the controller 9 is signal-connected to the oil pump 5, and the controller 9 is signal-connected to the front suspension solenoid valve 3 and the oil pump solenoid valve 51, respectively, and the controller 9 is used for synchronously controlling the oil pump solenoid valve 51 to switch to a lifting gear when a lifting signal is received, and controlling the front suspension solenoid valve 3 to cut off the air intake source of the intake line 2. The air intake line 2 of the front suspension air bag shock absorber assembly 1 can be controlled to be on and off by the front suspension solenoid valve 3. When the cab needs to be lifted, the air intake line of the front suspension air bag shock absorber assembly 1 can be cut off to effectively prevent the "cab flipping and nodding" phenomenon from occurring during the cab lifting process.

[0045] The embodiment of the present application sets a front suspension solenoid valve 3 in the intake pipe 2 connected to the front suspension airbag shock absorber assembly 1, and installs an oil pump solenoid valve 51 in the oil pump 5, so that the controller 9 can synchronously control the oil pump solenoid valve 51 to switch to the lifting gear when receiving the lifting signal, and control the front suspension solenoid valve 3 to cut off the intake source of the intake pipe 2, so that the intake end of the intake pipe 2 is cut off during the lifting process of the cab. The front suspension solenoid valve 3 is set in the intake pipe 2 and the oil pump solenoid valve 51 is installed in the oil pump 5. Both can occupy a smaller layout space of the vehicle, and directly setting the front suspension solenoid valve 3 in the intake pipe 2 can reduce the structural layout and simplify the air path layout of the whole vehicle; and the front suspension solenoid valve 3 can directly control the on-off of the intake pipe 2, which can enhance the reaction time of the air path conversion, and solve the technical problems in the related technology that the air path layout of adding a two-position two-way valve is complicated and may be difficult to achieve due to the limitation of the layout space.

[0046] See also Figure 4 As shown, in some optional embodiments, when the oil pump solenoid valve 51 is controlled to switch to the lifting gear, the front suspension solenoid valve 3 can also be controlled asynchronously to cut off the air intake source of the air intake line 2. That is to say, the switching of the gear of the oil pump solenoid valve 51 and the cutting off of the air intake source of the air intake line 2 by the front suspension solenoid valve 3 can be controlled separately. Specifically, the front suspension solenoid valve 3 can be controlled to cut off the air intake source of the air intake line 2 first, and then the oil pump solenoid valve 51 can be controlled to switch to the lifting gear. However, this method controls the front suspension solenoid valve 3 and the oil pump solenoid valve 51 separately, which may cause the cab to flip over and fall back to the frame 8. After that, the air path of the front suspension solenoid valve 3 is forgotten to be switched, thereby affecting the normal driving of the vehicle. If the oil pump solenoid valve 51 is controlled to switch to the lifting gear first, and then the front suspension solenoid valve 3 is controlled to cut off the air intake source of the air intake line 2, there is still a possibility of the "cab flip nodding" phenomenon occurring during the cab's ascent, affecting the smooth ascent of the cab. Therefore, in the embodiment of the present application, synchronously controlling the oil pump solenoid valve 51 to switch to the lifting gear, and controlling the front suspension solenoid valve 3 to cut off the air intake source of the intake pipe 2 can achieve smooth lifting of the cab and enhance the safety of the vehicle during driving.

[0047] See also Fig. 9 As shown, in some optional embodiments, the lifting attitude control system may further include a remote controller 6, wherein the remote controller 6 is provided with a Bluetooth module, and the remote controller 6 is wirelessly connected to the controller 9 via the Bluetooth module, and the remote controller 6 is used to send a lifting signal and a falling signal to the controller 9 via the Bluetooth module. In the embodiment of the present application, by setting the remote controller 6, the lifting state of the cab can be controlled within a certain distance, see Figure 1 and Figure 2The lifting switch 10 in the related technology shown is connected to the cab wiring harness by hard wire and must be arranged on the front wall of the cab, which means that the operator must stand in the front side of the cab during the flipping operation and cannot observe the surroundings of the vehicle as a whole, posing a certain flipping safety risk. The embodiment of the present application adopts the remote control 6 for control, and the space limitation of the Bluetooth module in the remote control 6 and the cab controller 9. During operation, the operator can hold the switch and check around the vehicle, which greatly improves the flipping safety.

[0048] In some optional embodiments, the remote control 6 is provided with a first button 61 and a second button 62. When the first button 61 is pressed, the controller 9 is controlled to send a lifting signal to the oil pump solenoid valve 51, and synchronously send a cut-off signal to the front suspension solenoid valve 3. When the second button 62 is pressed, the controller 9 is controlled to send a fall-back signal to the oil pump solenoid valve 51. The remote control 6 is also provided with a driving button 63. When the driving button 63 is pressed, the remote control 6 sends a motor working signal of the oil pump 5 to the controller 9. That is, by pressing the first button 61 and the second button 62 respectively, the oil pump solenoid valve 51 can be switched to the lifting gear or the falling gear. When the oil pump solenoid valve 51 is switched to the lifting gear, the front suspension solenoid valve 3 is also synchronously controlled to switch to the lifting air path. It should be understood that the lifting air path can refer to the cut-off of the intake air path of the front suspension airbag shock absorber assembly 1. When the gear switching is completed, by pressing the drive button 63, the controller 9 can send a motor working signal to the oil pump 5, so that the oil pump 5 drives the piston rod of the lifting cylinder 4 to extend or shorten, so as to achieve the purpose of lifting the cab. By setting the first button 61 and the second button 62 on the remote control 6, the gear of the oil pump solenoid valve 51 can be controlled respectively, so that the lifting or falling of the cab can be more clear. In the related art, a manual reversing wrench is provided to realize the reversing of the lifting or falling of the cab. When operating, it is usually necessary to manually turn the reversing switch to the lifting state, and then manually press the lifting switch 10 to drive the oil pump 5 to pump oil to the oil cylinder to realize the lifting function of the cab. The lifting switch 10 is arranged on the body of the oil pump 5. The oil pump 5 is driven by the mechanical reversing switch to perform the reversing function. In addition to poor operation convenience, the manual reversing wrench is also easy to cause the user to misjudge the lifting / falling state, causing a safety accident. Therefore, in the embodiment of the present application, the reversing of the oil pump solenoid valve 51 is operated by pressing the first button 61 and the second button 62 respectively, which can facilitate the operator's regulation and control, and more accurately control the lifting or falling state of the oil pump solenoid valve 51, thereby enhancing the safety of operation. Preferably, a driving button 63 is provided on the remote controller 6, so that the lifting or falling of the cab can be controlled by operating the remote controller 6, further enhancing the convenience of operation, so that the reversing of the oil pump solenoid valve 51 and the driving of the oil pump motor can be quickly realized by the remote controller 6. In the embodiment of the present application, the driving button 63 can be set to execute the inching function by short pressing, and the continuous working function by long pressing for more than three seconds, the oil pump 5 starts to pump oil to the lifting cylinder 4, and the cab starts to flip. When the oil pump solenoid valve 51 has been switched to the lifting state, because the front suspension air intake air path has been closed, when the airbag is pressed during the flipping process of the cab, the airbag will only be deflated but not inflated until the flipping is completed, thereby achieving the purpose of smooth lifting.

[0049] In some optional embodiments, the remote controller 6 is further provided with a first indicator light 65 and a second indicator light 66, and the first indicator light 65 and the second indicator light 66 are respectively connected to the controller 9 by signals. The first indicator light 65 and the second indicator light 66 can be respectively connected to the controller 9 by electrical signals. After pressing the first button 61, the first indicator light 65 can light up and display green, which means that the oil pump solenoid valve 51 has switched the oil pump 5 to the lifting gear, and the front suspension solenoid valve 3 closes the front suspension intake air path of the intake pipe 2; after pressing the second button 62, the second indicator light 66 can light up and display green, which means that the oil pump solenoid valve 51 has switched the oil pump 5 to the falling gear. When the first indicator light 65 and the second indicator light 66 are on, they can also display other colors besides green, such as red. By setting the first indicator light 65 and the second indicator light 66, when the operator presses the first button 61 or the second button 62, the indicator light on the remote control 6 can light up accordingly, which can serve as a reminder to the operator, and can also enable the operator to accurately see the operating position of the oil pump solenoid valve 51, effectively reducing the possibility of safety accidents caused by the operator pressing the wrong button. Specifically, when the first button or the second button is pressed, the remote control transmits the lifting signal or the falling signal to the controller 9 through the Bluetooth module. After receiving the lifting signal or the falling signal, the controller 9 can feed back the signal to the corresponding module in the remote control 6 to control the first indicator light 65 or the second indicator light 66 to light up.

[0050] See also Figure 3As shown, in some optional embodiments, the lifting attitude control system may further include a height valve 7, the air intake line 2 includes a first line 21, one end of the first line 21 is connected to the height valve 7, and the other end is used to connect to the vehicle air source, and the front suspension solenoid valve 3 is installed on the first line 21; the air intake line 2 also includes a second line 22, one end of the second line 22 is connected to the height valve 7, and the other end is connected to the front suspension airbag shock absorber assembly 1. In other words, the front suspension airbag shock absorber assembly 1 can be inflated using the vehicle air source, and by arranging the height valve 7 between the vehicle air source and the front suspension airbag shock absorber assembly 1, the height valve 7 can adjust the air supply to the front suspension airbag shock absorber assembly 1 or close the air intake according to the height of the cab posture. After the height valve 7 is fixed on the vehicle body, the swing arm of the height valve 7 is connected and fixed to the stabilizer bar assembly through the connecting rod of the height valve 7, so that when the cab moves up and down, the displacement can be transmitted to the swing arm of the height valve 7, and then the height valve 7 adjusts the air intake. The exhaust port of the height valve 7 can be connected to the air pipe of the front suspension airbag shock absorber assembly 1, which is the air path for charging and discharging the front suspension airbag shock absorber assembly 1. When the controller 9 sends a lifting signal to the oil pump solenoid valve 51, and the controller 9 synchronously sends a cut-off signal to the front suspension solenoid valve 3, the air intake path connected to the height valve 7 can be cut off. In the embodiment of the present application, the front suspension solenoid valve 3 is installed in the first pipeline 21, that is, the front suspension solenoid valve 3 is installed between the vehicle air source and the height valve 7. The front suspension solenoid valve 3 needs to ensure that the air intake pipeline 2 is unobstructed when the cab is not lifted, so as to ensure the normal operation of the height valve 7 and the front suspension airbag shock absorber assembly 1; and the front suspension solenoid valve 3 can switch the air intake pipeline 2 to the lifting air path when the cab is lifted, so that the height valve 7 only exhausts air but does not take in air, so as to achieve the purpose of smooth movement during the lifting of the cab. Specifically, the intake process may be that the gas in the vehicle's air source passes through the front suspension solenoid valve 3 and then through the height valve 7, and finally enters the front suspension airbag shock absorber assembly 1; the exhaust process is that the front suspension airbag shock absorber assembly 1 is pressed down by the gravity of the cab, and the gas in the front suspension airbag shock absorber assembly 1 is discharged into the height valve 7 and discharged through the exhaust port of the height valve 7. When the front suspension airbag shock absorber assembly 1 is exhausted, the previous intake air path of the height valve 7 is cut off by using the front suspension solenoid valve 3, so that the height valve 7 only exhausts but does not take in air.

[0051] In some optional embodiments, the lifting posture control system also includes a frame 8, one end of the front suspension airbag shock absorber assembly 1 is installed on the frame 8 through a shock absorber lower bracket 81, and the other end is installed with a front suspension upper bracket 82; the longitudinal beam 85 of the frame 8 is fixed with a front suspension joint bracket 83, and the front suspension joint bracket 83 is installed on the side of the longitudinal beam 85 close to the shock absorber lower bracket 81, and the height valve 7 is installed on the front suspension joint bracket 83. In the embodiment of the present application, the upper part of the front suspension airbag shock absorber assembly 1 can be indirectly connected to the cab through the front suspension upper bracket 82, that is, the front suspension upper bracket 82 is installed on the cab, and the lower part of the front suspension airbag shock absorber assembly 1 is installed on the frame 8 through the shock absorber lower bracket 81, and the front suspension joint bracket 83 can also be indirectly connected to the longitudinal beam 85. Under normal circumstances, the bottom of the front suspension airbag shock absorber assembly 1 is provided with an air inlet, one end of the second pipeline 22 can be connected to the air inlet, and the other end is connected to the height valve 7. When the vehicle is driving normally, the front suspension airbag shock absorber assembly 1 is inflated and deflated to achieve the change of the stiffness of the front suspension airbag shock absorber assembly 1, so as to achieve different support effects on the cab. It should be understood that the above-mentioned upper and lower parts can both be up and down along the height direction of the vehicle. The height valve 7 is indirectly connected to the frame 8 through the front suspension bracket 83, which can reduce the distance between the height valve 7 and the front suspension air bag shock absorber assembly 1, shorten the length of the second pipeline 22 and the adjustment time of the height valve 7 on the front suspension air bag shock absorber assembly 1, and more reasonably utilize the layout space of the frame 8.

[0052] See also Figure 5As shown, in some optional embodiments, the height valve 7 further includes a first front overhang height valve 71 and a second front overhang height valve 72, and the first front overhang height valve 71 and the second front overhang height valve 72 are symmetrically arranged along the axis of the frame 8; the front overhang solenoid valve 3 is installed in the middle of the first cross beam 84 of the frame 8, and the front overhang solenoid valve 3 is respectively connected with the first front overhang height valve 71 and the second front overhang height valve 72 through the second pipeline 22. In the embodiment of the present application, the front overhang bracket 83 is indirectly connected to the longitudinal beam 85 through the large casting of the frame. Usually, the large casting of the frame is fixed to one end of the longitudinal beam 85 close to the first cross beam 84. After the large casting of the frame is installed on one end of the longitudinal beam 85 by a combination of rivets and bolts, the first cross beam 84 is then indirectly fixed to the longitudinal beam 85 through the large casting of the frame. Since the height valve 7 is installed on the front overhang bracket 83, it can be understood that the height valve 7 is close to the first cross beam 84 in the frame. Furthermore, the front suspension airbag shock absorber assembly 1 may also include a left front suspension airbag shock absorber assembly 11 and a right front suspension airbag shock absorber assembly 12. The first front suspension height valve 71 may be arranged corresponding to the left front suspension airbag shock absorber assembly 11, and the second front suspension height valve 72 may be arranged corresponding to the right front suspension airbag shock absorber assembly 12. Both the first front suspension height valve 71 and the second front suspension height valve 72 are indirectly mounted on the frame 8 via the front suspension joint bracket 83, so that the first front suspension height valve 71 fixed to the front suspension joint bracket 83 may be located between the left front suspension airbag shock absorber assembly 11 and the large casting of the frame, aiming to reasonably utilize the upper air path layout of the frame 8 while also reducing the distance between the left front suspension airbag shock absorber assembly 11 and the first front suspension height valve 71, and the distance between the right front suspension airbag shock absorber assembly 12 and the second front suspension height valve 72, thereby improving the charging and discharging sensitivity of the height valve 7. Preferably, the height valve 7 can be arranged as close to the front end of the frame as possible, and as far away from the longitudinal beam 85 as possible along the Y direction (i.e. longitudinal direction) of the vehicle, so as not to occupy the arrangement space inside the frame and to facilitate the overall installation of the front suspension assembly bracket 83 from top to bottom. It should be noted that the installation position of the height valve 7 needs to be arranged on the inner side of the front suspension airbag shock absorber assembly 1 to facilitate the arrangement of the height valve connecting rod structure.

[0053] Furthermore, the front suspension solenoid valve 3 is installed in the middle of the first cross beam 84 of the frame 8, which may mean that the front suspension solenoid valve 3 is installed in the middle position of the first cross beam 84 along its length direction, or it may be a position offset a certain distance to the left or right from the middle position. Preferably, the front suspension solenoid valve 3 may be provided with three interfaces, one of which is connected to the air source of the whole vehicle, and the other two interfaces are respectively connected to the first front suspension height valve 71 and the second front suspension height valve 72. The pipelines connected to the first front suspension height valve 71 and the second front suspension height valve 72 may extend along the extension direction of the first cross beam 84 of the frame 8 toward the side close to the left longitudinal beam 85 and the side close to the right longitudinal beam 85, respectively, so as to achieve the shortest possible air path layout, save material usage and accelerate the response time of the first front suspension height valve 71 and the second front suspension height valve 72. In the embodiment of the present application, the front suspension solenoid valve 3 is arranged at the first crossbeam 84 at the front end of the frame 8, which is relatively close to the cab controller 9 and the front suspension airbag shock absorber assembly 1. Compared with the solutions in the related art, the two-position two-way valve in the related art must be arranged at the rear suspension (the two-position two-way valve must be unlocked and driven by the hydraulic lock) mainly due to the limitation of the mechanical structure, and the oil pump 5 is connected through the oil pipe, and the oil pump 5 is connected from the front of the frame 8 to the rear suspension of the cab, and then the two-position two-way valve at the rear suspension is connected to the air pipe to the left and right airbags of the front suspension. The embodiment of the present application allows the various components in the lifting posture control system to be centrally arranged at the front suspension of the vehicle, reducing the span of the component installation space and making the arrangement more reasonable.

[0054] See also Figure 10-11 As shown, the embodiment of the present application also provides a control method for the above-mentioned cab lifting posture control system, and the control method may include the following steps:

[0055] SI: When receiving the lifting signal, the oil pump solenoid valve 51 is controlled to switch to the lifting gear, and the front suspension solenoid valve 3 is synchronously controlled to cut off the air intake source of the air intake line 2. Specifically, the operator can first press the first button 61 on the remote controller 6 to send the lifting signal to the controller 9 in the cab through the Bluetooth module. The controller 9 feeds back the signal to the remote controller 6 to light up the first indicator light 65. At the same time, the controller 9 also sends a signal to the front suspension solenoid valve 3 and the oil pump solenoid valve 51 to switch the front suspension solenoid valve 3 to the lifting air path and the oil pump solenoid valve 51 to the lifting gear.

[0056] S2: Control the motor of the oil pump 5 to start, drive the piston rod of the lifting cylinder 4 to extend, and drive the cab to lift. By pressing the drive button 63, the drive button 63 communicates with the controller 9 through the Bluetooth module, and the controller 9 sends the oil pump motor working signal to the oil pump 5. After that, the oil pump motor starts to work, and the lifting hydraulic oil is pumped into the lifting cylinder 4 through the oil pipe. The piston rod of the lifting cylinder 4 begins to extend, and the cab begins to flip. During the flipping process, the front suspension shock absorber only discharges air but does not take in air, so that the cab can be lifted smoothly.

[0057] In some optional embodiments, the control method may further include: when receiving a fallback signal, controlling the oil pump solenoid valve 51 to switch to the fallback gear; controlling the motor of the oil pump 5 to start, driving the piston rod of the lifting cylinder 4 to retract, and driving the cab to fall back. Specifically, the operator can first press the second button 62 on the remote control 6, and send the fallback signal to the controller 9 of the cab through the Bluetooth module. The controller 9 feeds back the signal to the remote control 6, so that the second indicator light 66 lights up. At the same time, the controller 9 also sends a signal to the oil pump solenoid valve 51, so that the oil pump solenoid valve 51 switches to the fallback gear, and the front suspension solenoid valve switches to "passage". Then press the drive button 63, the drive button 63 communicates with the controller 9 through the Bluetooth module, and the controller 9 sends the oil pump motor working signal to the oil pump 5, after which the oil pump motor starts to work, the oil pump 5 starts the piston rod of the lifting cylinder 4 to start to retract, and the cab starts to fall back.

[0058] For further information, see Figure 7 and Figure 8 As shown, the first button 61 and the second button 62 in the remote control 6 can also be set as self-resetting switches, and an emergency stop button 64 can be added to the remote control 6. The emergency stop button 64 can also send a signal to the controller 9 through the Bluetooth module, so that when there is an emergency problem during the flipping process of the cab, the cab can be controlled to stop flipping in time, thereby further enhancing the safety of the flipping process.

[0059] The embodiment of the present application further provides a vehicle, which includes the above-mentioned lifting attitude control system of the cab. The vehicle in the embodiment of the present application includes the lifting attitude control system in any of the above-mentioned embodiments, which will not be described in detail here.

[0060] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0061] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0062] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A cab lifting attitude control system, characterized in that: It includes: A front suspension airbag shock absorber assembly (1), wherein the front suspension airbag shock absorber assembly (1) is connected to an air intake pipeline (2), and the air intake pipeline (2) is connected to a front suspension solenoid valve (3); A lifting cylinder (4), wherein the lifting cylinder (4) is connected to an oil pump (5), and the oil pump (5) is equipped with an oil pump solenoid valve (51); A controller (9), wherein the controller (9) is connected to the oil pump (5) signal, and the controller (9) is respectively connected to the front suspension solenoid valve (3) and the oil pump solenoid valve (51) signal, and the controller (9) is used to synchronously control the oil pump solenoid valve (51) to switch to a lifting gear when receiving a lifting signal, and control the front suspension solenoid valve (3) to cut off the intake source of the intake pipe (2).

2. The cab lifting attitude control system according to claim 1, characterized in that: The lifting attitude control system also includes a remote controller (6), wherein a Bluetooth module is provided in the remote controller (6), and the remote controller (6) is wirelessly connected to the controller (9) via the Bluetooth module, and the remote controller (6) is used to send a lifting signal and a falling signal to the controller (9) via the Bluetooth module.

3. The cab lifting attitude control system according to claim 2, characterized in that: The remote controller (6) is provided with a first button (61) and a second button (62). When the first button (61) is pressed, the controller (9) is controlled to send a lifting signal to the oil pump solenoid valve (51) and simultaneously send a cutting signal to the front suspension solenoid valve (3). When the second button (62) is pressed, the controller (9) is controlled to send a falling signal to the oil pump solenoid valve (51). The remote controller (6) is also provided with a driving button (63). When the driving button (63) is pressed, the remote controller (6) sends a motor operating signal of the oil pump (5) to the controller (9).

4. The cab lifting attitude control system according to claim 3, characterized in that: The remote controller (6) is also provided with a first indicator light (65) and a second indicator light (66), and the first indicator light (65) and the second indicator light (66) are respectively connected to the controller (9) by signals.

5. The cab lifting attitude control system according to claim 1, characterized in that: The lifting attitude control system further comprises an altitude valve (7), The air intake pipeline (2) comprises a first pipeline (21), one end of the first pipeline (21) is connected to the height valve (7), and the other end is used to connect to the air source of the whole vehicle, and the front suspension solenoid valve (3) is installed on the first pipeline (21); The air intake pipeline (2) further comprises a second pipeline (22), one end of which is connected to the height valve (7) and the other end of which is connected to the front suspension airbag shock absorber assembly (1).

6. The cab lifting attitude control system according to claim 5, characterized in that: The lifting posture control system also includes a vehicle frame (8), one end of the front suspension airbag shock absorber assembly (1) is mounted on the vehicle frame (8) via a shock absorber lower bracket (81), and the other end is mounted with a front suspension upper bracket (82); A front suspension bracket (83) is fixed to the longitudinal beam (85) of the vehicle frame. The front suspension bracket (83) is installed on a side of the longitudinal beam (85) close to the shock absorber lower bracket (81). The height valve (7) is installed on the front suspension bracket (83).

7. The cab lifting attitude control system according to claim 6, characterized in that: The height valve (7) comprises a first front overhang height valve (71) and a second front overhang height valve (72), wherein the first front overhang height valve (71) and the second front overhang height valve (72) are symmetrically arranged along the axis of the vehicle frame (8); The front suspension solenoid valve (3) is installed at the middle part of the first cross beam (84) of the frame (8), and the front suspension solenoid valve (3) is respectively connected to the first front suspension height valve (71) and the second front suspension height valve (72) through the second pipeline (22).

8. A control method for a cab lifting posture control system as claimed in claims 1 to 7, characterized in that: The control method comprises the following steps: When a lifting signal is received, the oil pump solenoid valve (51) is controlled to switch to a lifting gear position, and the front suspension solenoid valve (3) is synchronously controlled to cut off the air intake source of the air intake pipeline (2); The motor controlling the oil pump (5) is turned on, driving the piston rod of the lifting oil cylinder (4) to extend, thereby driving the cab to be lifted.

9. The control method according to claim 8, characterized in that: The control method further comprises: When a fall-back signal is received, the oil pump solenoid valve (51) is controlled to switch to a fall-back gear position; The motor controlling the oil pump (5) is turned on, driving the piston rod of the lifting oil cylinder (4) to retract, and driving the driving cab to fall back.

10. A vehicle, characterized in that: It comprises a cab lifting posture control system as claimed in any one of claims 1 to 7.

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