Control device for automatically leveling driver seat by using air bag and control method thereof

Abstract

The invention discloses a control device for automatically leveling a driver seat through an air bag and a control method of the control device. The control device comprises a mounting platform, an air bag assembly and a control system. The control system comprises a controller, an air pressure sensor, a tilt angle sensor and a timer; the mounting platform is arranged below the driver seat body; the air bag assembly is connected between the mounting platform and the driver seat body; the air pressure sensor is installed on the air bag assembly, electrically connected with the input end of the controller and used for transmitting an air pressure signal for detecting the air bag assembly to the controller. The tilt angle sensor is arranged on the mounting platform, is electrically connected with the input end of the controller and is used for transmitting a tilt angle signal for detecting the mounting platform to the controller; the timer is electrically connected with the input end of the controller and is used for transmitting the inclination angle holding time of the inclination angle sensor to the controller; the controller controls the air bag assembly to be inflated and deflated based on the inclination angle signal so as to adjust the driver seat body to be in the horizontal state, operation of a driver is facilitated, and the operation experience is improved.

Description

Technical Field

[0001] The invention relates to a control device and a control method for automatically leveling a driver's seat by using an air bag, belonging to the technical field of operating machinery. Background Art

[0002] The operating machinery needs to operate on different working surfaces. On some special working surfaces, such as forests and ditches, the operating machinery needs to maintain an inclined posture to operate. Different working surfaces have different inclined postures, which may be front-to-back, left-to-right, etc.

[0003] At present, the driver's seat is usually fixed on the floor of the cab, and is consistent with the tilt angle of the working machine, that is, the driver's seat maintains a tilted posture with the working machine. Therefore, the driver also needs to maintain a tilted posture to work. The disadvantage of this structure is that it increases the difficulty of the driver's operation on the inclined working road surface, and the working experience is poor. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a control device and a control method for automatically leveling a driver's seat using an airbag, so as to automatically control the seat to maintain a horizontal state.

[0005] The present invention is implemented according to the following technical solutions: In the first aspect, the present invention provides a control device for automatically leveling a driver's seat using an airbag, comprising a mounting platform, an airbag assembly and a control system; the control system comprises a controller, an air pressure sensor, an inclination sensor and a timer; the mounting platform is arranged below a driver's seat body; the airbag assembly is connected between the mounting platform and the driver's seat body; the controller has a data processing function; the air pressure sensor is mounted on the airbag assembly and is electrically connected to the input end of the controller for transmitting an air pressure signal of the airbag assembly to the controller; the inclination sensor is mounted on the mounting platform and is electrically connected to the input end of the controller for transmitting an inclination signal of the mounting platform to the controller; the timer is electrically connected to the input end of the controller for transmitting the inclination holding time of the inclination sensor to the controller; the controller controls the inflation and exhaust of the airbag assembly based on the inclination angle signal to adjust the driver's seat body to a horizontal state.

[0006] In some embodiments, an alarm module is also included, which is electrically connected to the output end of the controller. The controller is used to control the alarm module to send an alarm signal when the inclination angle of the installation platform reaches a preset maximum inclination angle.

[0007] In some embodiments, the alarm module uses a buzzer and / or a display light. When the inclination angle of the installation platform reaches a preset maximum inclination angle, the controller controls the buzzer and / or the display light to work to remind the driver.

[0008] In some embodiments, a display screen is also included, which is arranged in the cab and electrically connected to the output end of the controller. On the one hand, it is used to display the inclination angle of the mounting platform and the air pressure value of the airbag assembly. On the other hand, when the inclination angle of the mounting platform reaches a preset maximum inclination angle, the controller sends an alarm signal to the display screen, and the display screen displays the alarm signal.

[0009] In some embodiments, a control valve is also included, which is connected to the airbag assembly and electrically connected to the output end of the controller. The controller controls the inflation and exhaust of the airbag assembly through the control valve to control the height.

[0010] In some embodiments, the airbag assembly includes: At least one first airbag assembly, comprising an airbag body, wherein the top and bottom of the airbag body are provided with an upper cover plate and a lower cover plate, wherein the ball head of the upper cover plate is hinged to the driver seat body, and the ball head of the lower cover plate is hinged to the mounting platform, and can realize rotation in any direction; At least one second airbag assembly comprises an airbag body, wherein the top and bottom of the airbag body are provided with an upper cover plate and a lower cover plate, the ball head of the upper cover plate is hinged to the driver seat body, and the lower cover plate is fixed to the mounting platform.

[0011] In some embodiments, the number of the first airbag assemblies is three, the number of the second airbag assembly is one, and the four airbag assemblies are arranged in two rows and two columns.

[0012] In a second aspect, the present invention provides a control method based on the above control device: The inclination sensor detects the inclination angle and duration t0 of the installation platform in real time, and sends the detected inclination angle signal and duration t0 to the controller; When the inclination angle of the mounting platform exceeds the preset value and reaches the duration t0, the controller detects the air pressure value of the airbag assembly, controls the corresponding airbag assembly through the control valve, and adjusts the driver's seat body back to a horizontal state; at the same time, the display screen displays the inclination angle of the mounting platform and the air pressure value of the airbag assembly in real time.

[0013] When the inclination angle of the installation platform exceeds the maximum inclination angle, the controller controls the alarm module to send out an alarm signal; at the same time, the display screen displays the alarm signal, and the driver drives away from the current working road surface.

[0014] In some embodiments, the controller controls the control strategy of the airbag assembly: the inclination sensor transmits the inclination angle of the mounting platform to the controller, and the controller obtains the component values ​​of the inclination angle in the X and Y directions through analysis and calculation, and controls the air pressure values ​​of the X and Y airbag assemblies in turn through the control valves; wherein, the first airbag assembly 2A is a Y-direction airbag, associated with the Y-direction inclination angle; the first airbag assembly 2C is an X-direction airbag, associated with the X-direction inclination angle; the first airbag assembly 2B is a normally moving airbag, which is coupled with the first airbag assemblies 2A and 2C respectively; the second airbag assembly is a normally static airbag, and its state remains unchanged.

[0015] In a third aspect, the present invention provides a working machine equipped with the above-mentioned control device for automatically leveling the driver's seat using an airbag.

[0016] Beneficial effects of the present invention: The present invention installs a plurality of airbag assemblies between the driver's seat body and the mounting platform, so that the driver's seat body is always kept in a horizontal state during operation, which is convenient for the driver to operate and improves the operating experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0018] In the attached picture: Figure 1 This is a schematic diagram of the application of the control device for automatically leveling the driver's seat using an airbag according to the present invention; Figure 2 is a schematic diagram of a first airbag assembly of the present invention; Figure 3 is a schematic diagram of a second airbag assembly of the present invention; Figure 4 It is the principle diagram of the control system of the present invention; Figure 5 A flow chart of a control method for automatically leveling a driver's seat using an airbag according to the present invention; Figure 6 A flow chart of a control strategy for controlling an airbag assembly by a controller of the present invention; Figure 7 This is a flow chart of the controller of the present invention controlling the action of the airbag assembly.

[0019] Figure symbols: driver seat body 1, first airbag assembly 2, mounting platform 3, second airbag assembly 4, tilt sensor 5, controller 6, control valve 7, alarm module 8, display screen 9, timer 10, air pressure sensor 11, airbag body 201, upper cover 202, lower cover 203, airbag body 401, upper cover 402, lower cover 403.

[0020] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a control device for automatically leveling a driver's seat using an airbag includes a first airbag assembly 2, a mounting platform 3, a second airbag assembly 4, a tilt sensor 5, a controller 6, a timer 10, and an air pressure sensor 11.

[0025] The mounting platform 3 is arranged below the driver seat body 1; the first airbag assembly 2 and the second airbag assembly 4 are arranged between the driver seat body 1 and the mounting platform 3; the first airbag assembly 2 includes an airbag body 201, the top and bottom of which are provided with an upper cover plate 202 and a lower cover plate 203, the ball head of the upper cover plate 202 is hinged to the driver seat body 1, and the ball head of the lower cover plate 203 is hinged to the mounting platform 3, and rotation in any direction can be realized; the second airbag assembly 4 includes an airbag body 401, the top and bottom of which are respectively provided with an upper cover plate 402 and a lower cover plate 403, the ball head of the upper cover plate 402 is hinged to the driver seat body 1, and the lower cover plate 403 is connected to the mounting platform 3 by bolts. The inclination sensor 4 is arranged on the mounting platform 3; the air pressure sensor 11 is respectively installed on the first airbag assembly 2, and is used to transmit the air pressure signal to the controller 6; the timer 10 transmits the inclination holding time of the inclination sensor 5 to the controller 6; the controller 6 is electrically connected to the inclination sensor 5, and is used to receive the inclination angle signal of the mounting platform 3, and control the inflation and exhaust of the airbag assembly based on the inclination angle signal to adjust the driver's seat body to a horizontal state. The present invention installs four airbag assemblies between the driver's seat body 1 and the mounting platform 3 (the number of the first airbag assemblies 2 is three, the number of the second airbag assembly 4 is one, and the four airbag assemblies are arranged in two rows and two columns), so that the driver's seat body always maintains a horizontal state for operation, which is convenient for the driver to operate and improves the operating experience.

[0026] Further solutions, such as Figure 4 As shown, an alarm module 8 is also included, and the alarm module 8 is electrically connected to the controller 6. The controller 6 is also used to control the alarm module 8 to send an alarm signal when the inclination angle of the mounting platform 3 reaches a preset maximum inclination angle. The maximum inclination angle can be obtained based on experience according to the actual application scenario. By setting the alarm module 8, an alarm signal can be sent when the inclination angle of the mounting platform 3 reaches the preset maximum inclination angle to remind the driver to leave the current working road surface and reduce the risk of rollover.

[0027] Specifically, the alarm module 8 can be a conventional alarm such as a buzzer, a display light, etc. Exemplarily, the alarm module 8 is a buzzer, and when the inclination angle of the mounting platform 3 reaches a preset maximum inclination angle, the buzzer sounds to remind the driver that there is a risk of rollover and he needs to quickly leave the current working road surface.

[0028] Compared with the method of setting the inclination sensor 5 on the seat body 1, the embodiment of the present invention sets the inclination sensor 5 on the mounting platform 3, which can detect the inclination angle of the mounting platform 3 in real time, so that when the inclination angle of the mounting platform 3 reaches a preset maximum inclination angle, that is, when there is a risk of rollover, the alarm module 8 is controlled by the controller 6 to send an alarm signal to remind the driver to leave the current working road surface, thereby improving the safety of use.

[0029] Further solutions, such as Figure 4 As shown, the display screen 9 is also included, and the display screen 9 is arranged in the cab for the driver to view. The display screen 9 is electrically connected to the controller 6 and is used to display the inclination angle of the mounting platform 3 and the air pressure value of the airbag assembly 3. The display screen 9 can intuitively display the inclination angle of the current mounting platform 2 and the air pressure value of the airbag assembly, which is convenient for the driver to operate. The display screen 9 can select any existing structure as needed.

[0030] In a further solution, the display screen 9 can also display the alarm signal of the alarm module 8 to further remind the driver of the risk of rollover. Specifically, when the inclination angle of the mounting platform 2 reaches the preset maximum inclination angle, the controller 6 simultaneously sends an alarm signal to the display screen 9, and the display screen 9 displays the alarm signal to remind the driver.

[0031] Further solutions, such as Figure 4 As shown, the control valve 7 is also included. The control valve 7 is respectively connected to the plurality of airbag assemblies and is electrically connected to the controller 6. The controller 6 controls the inflation and exhaust of the airbag assembly 3 to control the height through the control valve 7. The controller 6 controls the airbag assembly through the control valve 7, which has a simple structure and is conducive to promotion. The control valve 7 can be a conventional valve such as a solenoid valve that can control the action of the airbag assembly.

[0032] like Figure 5 As shown, the working process of the embodiment of the present invention is as follows: The inclination sensor 5 detects the inclination angle and duration t0 of the installation platform 2 in real time, and sends the detected inclination angle signal and duration t0 to the controller 6 .

[0033] When the inclination angle of the mounting platform 2 exceeds the preset value and reaches the duration t0, the controller 6 detects the air pressure values ​​of the four airbag assemblies, controls the airbag assemblies through the control valves 7, and adjusts the driver's seat body 1 back to a horizontal state. At the same time, the display screen 9 displays the inclination angle of the mounting platform 3 and the air pressure values ​​of the airbag assemblies in real time.

[0034] When the inclination angle of the installation platform 3 exceeds the maximum inclination angle, the controller 6 controls the alarm module 8 to send an alarm signal. At the same time, the display screen 9 displays the alarm signal, and the driver drives away from the current working road surface.

[0035] The controller 6 controls the control strategy of the airbag assembly: the inclination sensor 5 transmits the inclination angle of the mounting platform 3 to the controller 6, and the controller 6 obtains the component values ​​of the inclination angle in the X and Y directions through analysis and calculation, and controls the air pressure values ​​of the X and Y directions of the airbags in turn through the control valve 7, such as Figure 6As shown, the airbag assembly 2A is a Y-direction airbag, associated with a Y-direction tilt angle; the airbag assembly 2C is an X-direction airbag, associated with an X-direction tilt angle; the airbag assembly 2B is a normally moving airbag, coupled with the airbag assemblies 2A and 2C respectively; the airbag assembly 4 is a normally static airbag, and its state remains unchanged.

[0036] The process of the controller controlling the action of the airbag assembly is as follows Figure 7 As shown, the controller receives the tilt sensor signal, and decomposes the received tilt signal into two dimensions, X and Y. The controller obtains the airbag pressure corresponding to the angle through calculation. The air pressure sensor transmits the three airbag pressures to the controller, and the controller controls the solenoid valve to operate until the airbag pressure reaches a predetermined value, at which time the airbag state is initialized.

[0037] In summary, the present invention installs multiple airbag assemblies between the driver's seat body and the mounting platform, so that the driver's seat body always remains in a horizontal state during operation, which facilitates the driver's operation and improves the operating experience.

[0038] The working machine provided by the present invention is described below. The working machine described below and the control device for automatically leveling the driver's seat using an airbag described above can be referred to each other.

[0039] A working machine provided by the present invention may include a control device for automatically leveling a driver's seat using an airbag as described in any one of the above embodiments.

[0040] The beneficial effects achieved by the operating machine provided by the present invention are consistent with the beneficial effects achieved by the control device for automatically leveling the driver's seat using an airbag provided by the present invention, and will not be described in detail here.

[0041] It should be noted that the above-mentioned working machinery may be a crane, an excavator or a forklift, etc.

[0042] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0043] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present invention and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0044] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A control device for automatically leveling a driver's seat using an airbag, characterized in that: include: A mounting platform is arranged below the driver's seat body; an airbag assembly connected between the mounting platform and the driver's seat body; Control system, including: A controller, which has data processing capabilities; An air pressure sensor, mounted on the airbag assembly and electrically connected to an input terminal of the controller, for transmitting an air pressure signal of the airbag assembly to the controller; An inclination sensor is arranged on the mounting platform and is electrically connected to the input end of the controller, and is used to transmit an inclination signal of the mounting platform to the controller; A timer is electrically connected to the input end of the controller and is used to transmit the tilt angle holding time of the tilt sensor to the controller; the controller controls the inflation and exhaust of the airbag assembly based on the tilt angle signal to adjust the driver's seat body to a horizontal state.

2. A control device for automatically leveling a driver's seat using an airbag according to claim 1, characterized in that: Also includes: The alarm module is electrically connected to the output end of the controller, and the controller is used to control the alarm module to send out an alarm signal when the inclination angle of the installation platform reaches a preset maximum inclination angle.

3. A control device for automatically leveling a driver's seat using an airbag according to claim 2, characterized in that: The alarm module uses a buzzer and / or a display light. When the inclination angle of the installation platform reaches a preset maximum inclination angle, the controller controls the buzzer and / or the display light to work to remind the driver.

4. A control device for automatically leveling a driver's seat using an airbag according to claim 2, characterized in that: Also includes: A display screen is arranged in the cab and electrically connected to the output end of the controller. On the one hand, it is used to display the inclination angle of the mounting platform and the air pressure value of the airbag assembly. On the other hand, when the inclination angle of the mounting platform reaches a preset maximum inclination angle, the controller sends an alarm signal to the display screen, and the display screen displays the alarm signal.

5. The control device for automatically leveling the driver's seat using an airbag according to claim 1, characterized in that: Also includes: The control valve is connected to the airbag assembly and is electrically connected to the output end of the controller. The controller controls the inflation and exhaust of the airbag assembly through the control valve to control the height.

6. The control device for automatically leveling the driver's seat using an airbag according to claim 1, characterized in that: The airbag assembly comprises: At least one first airbag assembly, comprising an airbag body, wherein the top and bottom of the airbag body are provided with an upper cover plate and a lower cover plate, wherein the ball head of the upper cover plate is hinged to the driver seat body, and the ball head of the lower cover plate is hinged to the mounting platform, and can realize rotation in any direction; At least one second airbag assembly comprises an airbag body, wherein the top and bottom of the airbag body are provided with an upper cover plate and a lower cover plate, the ball head of the upper cover plate is hinged to the driver seat body, and the lower cover plate is fixed to the mounting platform.

7. A control device for automatically leveling a driver's seat using an airbag according to claim 6, characterized in that: The number of the first airbag modules is three, the number of the second airbag module is one, and the four airbag modules are arranged in two rows and two columns.

8. A control method based on the control device according to any one of claims 1 to 7, characterized in that: The inclination sensor detects the inclination angle and duration t0 of the installation platform in real time, and sends the detected inclination angle signal and duration t0 to the controller; When the inclination angle of the mounting platform exceeds the preset value and reaches the duration t0, the controller detects the air pressure value of the airbag assembly, controls the corresponding airbag assembly through the control valve, and adjusts the driver's seat body back to a horizontal state; at the same time, the display screen displays the inclination angle of the mounting platform and the air pressure value of the airbag assembly in real time; When the inclination angle of the installation platform exceeds the maximum inclination angle, the controller controls the alarm module to send out an alarm signal; at the same time, the display screen displays the alarm signal, and the driver drives away from the current working road surface.

9. The control method according to claim 8, characterized in that: The controller controls the control strategy of the airbag assembly: the inclination sensor transmits the inclination angle of the mounting platform to the controller, which calculates and analyzes the component values ​​of the inclination angle in the X and Y directions, and controls the air pressure values ​​of the airbag assemblies in the X and Y directions in turn through the control valve; Among them, the first airbag component 2A is a Y-direction airbag, associated with the Y-direction tilt angle; the first airbag component 2C is an X-direction airbag, associated with the X-direction tilt angle; the first airbag component 2B is a normally moving airbag, which is coupled with the first airbag components 2A and 2C respectively; the second airbag component is a normally static airbag, and its state remains unchanged.

10. A working machine, characterized in that: A control device for automatically leveling a driver's seat using an airbag as claimed in any one of claims 1 to 7 is installed.

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