Engineering vehicle gear shifting control method and systems, readable storage medium and engineering vehicle

Abstract

An engineering vehicle (10) gear shifting control method and systems (20, 30), a readable storage medium, and an engineering vehicle (10). The engineering vehicle (10) gear shifting control method comprises: acquiring brake oil pressure by means of a brake sensor (140); determining whether the brake oil pressure has reached a preset oil pressure value; when the brake oil pressure has reached the preset oil pressure value, determining whether the brake oil pressure has remained a preset duration to obtain a determination result; and, on the basis of the determination result, determining whether to receive a gear shifting switch (110) signal.

Description

Engineering vehicle gear shifting control method and system, readable storage medium and engineering vehicle

[0001] The present application claims priority to the Chinese patent application No. 202410629027.0, filed on May 21, 2024, and entitled "Engineering vehicle gear shifting control method and system, readable storage medium and engineering vehicle", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of engineering vehicles, in particular to an engineering vehicle gear shifting control method and system, a readable storage medium and an engineering vehicle. BACKGROUND

[0003] The existing engineering vehicle brake light becomes bright immediately after the brake is pressed, at which time the driver can shift gears, but the vehicle may not have completely stabilized due to inertia, and if the driver shifts gears at this time, the gearbox gears may be engaged while moving and be damaged. When the electromagnetic valve is powered, the gearbox is in high gear state, if the electromagnetic valve suction force decreases or the wire harness fails to cause power loss, at this time the reversing valve drives the gearbox shift fork oil cylinder to act, and drives the gear to jump from high gear to low gear. The gearbox gears abnormally shift during driving, causing gear damage. TECHNICAL SOLUTION

[0004] The present application aims to solve or improve the above technical problems.

[0005] To this end, the first object of the present application is to provide an engineering vehicle gear shifting control method.

[0006] The second object of the present application is to provide an engineering vehicle gear shifting control system.

[0007] The third object of the present application is to provide an engineering vehicle gear shifting control system.

[0008] The fourth object of the present application is to provide a readable storage medium.

[0009] The fifth object of the present application is to provide an engineering vehicle.

[0010] To achieve the first object of the present application, the technical solution of the first aspect of the present application provides an engineering vehicle gear shifting control method, comprising: acquiring brake oil pressure through a brake sensor; determining whether the brake oil pressure reaches a preset oil pressure value; when the brake oil pressure reaches the preset oil pressure value, determining whether the brake oil pressure is maintained for a preset time period to obtain a determination result; and determining whether to receive a gear shifting switch signal according to the determination result.

[0011] According to the shift control method of the engineering vehicle provided in the application, first, brake oil pressure is obtained through a brake sensor, and it is judged whether the brake oil pressure reaches a preset oil pressure value. When the brake oil pressure reaches the preset oil pressure value, it is judged whether the brake oil pressure is maintained for a preset time length, and a judgment result is obtained. Finally, it is determined whether to receive a shift switch signal according to the judgment result, and whether to shift is realized. It can be understood that when the driver shifts, the brake is deeply pressed to the preset oil pressure value, and the gear position switch takes effect and the shift is completed after the preset oil pressure value is maintained for a preset time length, and the shift is not effective if the preset time length is not reached, so as to avoid the driver shifting when the vehicle is not stable, causing the vehicle to shift in the driving state, and the gear position is switched in the driving of the gearbox and the gear is toothed.

[0012] In addition, the technical solutions provided in the application can also have the following additional technical features:

[0013] In some technical solutions, optionally, when the brake oil pressure reaches the preset oil pressure value, it is judged whether the brake oil pressure is maintained for a preset time length, and a judgment result is obtained, including: when the brake oil pressure reaches the preset oil pressure value, the brake light is turned on; the shift switch sends a shift switch signal; it is judged whether the brake light is bright enough for a preset time length, and a judgment result is obtained.

[0014] In this technical solution, when the brake oil pressure reaches the preset oil pressure value, it is judged whether the brake oil pressure is maintained for a preset time length, and a judgment result is obtained, specifically whether the brake oil pressure reaches the preset oil pressure value. When the brake oil pressure reaches the preset value, the brake light is turned on, which can remind the operator that the shift can be performed. The shift switch sends a shift switch signal, and it is judged whether the brake light is bright enough for a preset time length, and a judgment result is obtained, which can be shifted according to the judgment result. When the driver shifts, the brake is deeply pressed to the brake light, and the gear position switch takes effect and the shift is completed after the brake light is bright enough for a preset time length, and the shift is not effective if the preset time length is not reached, so as to avoid the driver shifting when the vehicle is not stable, causing the vehicle to shift in the driving state, and the gear position is switched in the driving of the gearbox and the gear is toothed.

[0015] In some technical solutions, optionally, the engineering vehicle includes a controller, a three-position four-way electromagnetic valve and a shift fork oil cylinder, the controller is connected with the brake sensor, the shift switch and the three-position four-way electromagnetic valve respectively, the three-position four-way electromagnetic valve is connected with the shift fork oil cylinder, and whether to receive the shift switch signal is determined according to the judgment result, including: when the brake light is bright enough for a preset time length, the shift switch signal is received through the controller, and the three-position four-way electromagnetic valve is controlled according to the shift switch signal to control the shift fork oil cylinder to switch the gear position.

[0016] In the technical scheme, the engineering vehicle comprises a controller, a three-position four-way electromagnetic valve and a shift fork oil cylinder, the controller is connected with a brake sensor, a gear shifting switch and the three-position four-way electromagnetic valve respectively, is used for receiving brake oil pressure acquired by the brake sensor and a gear shifting switch signal sent by the gear shifting switch, and controlling the three-position four-way electromagnetic valve according to the gear shifting switch signal, the three-position four-way electromagnetic valve is connected with the shift fork oil cylinder, and is used for controlling the shift fork oil cylinder to switch gears. According to the judgment result, whether the gear shifting switch signal is received is specifically that when the brake light is bright enough for a preset time length, the gear shifting switch signal is received through the controller, and the three-position four-way electromagnetic valve is controlled according to the gear shifting switch signal, so as to control the shift fork oil cylinder to switch gears. The three-position four-way electromagnetic valve drives the shift fork oil cylinder, so that the electromagnetic valve can return to the neutral position after losing power when working in the high-speed gear or the low-speed gear, but the gearbox gear remains unchanged, and the gearbox gear cannot be switched due to coil magnetic force weakening or wire harness failure.

[0017] In some technical schemes, the engineering vehicle gear shifting control method further comprises: after the gear switching is completed, controlling corresponding gear lights to be bright, the gear lights comprising a high-speed gear light and a low-speed gear light.

[0018] In the technical scheme, after the gear switching is completed, the corresponding gear lights are controlled to be bright, so as to remind the operator that the gear shifting is successful. The gear lights comprise a high-speed gear light and a low-speed gear light.

[0019] In some technical schemes, optionally, the three-position four-way electromagnetic valve comprises an oil inlet, an oil return, a first working oil port and a second working oil port, the first working oil port is connected with a first end of the shift fork oil cylinder, and the second working oil port is connected with a second end of the shift fork oil cylinder.

[0020] In the technical scheme, the three-position four-way electromagnetic valve comprises an oil inlet, an oil return, a first working oil port and a second working oil port, the first working oil port is connected with a first end of the shift fork oil cylinder, and the second working oil port is connected with a second end of the shift fork oil cylinder.

[0021] In some technical schemes, optionally, when the three-position four-way electromagnetic valve is in the first position, the first working oil port and the second working oil port are connected with the oil return and disconnected with the oil inlet; when the three-position four-way electromagnetic valve is in the second position, the first working oil port is connected with the oil inlet, and the second working oil port is connected with the oil return; and when the three-position four-way electromagnetic valve is in the third position, the first working oil port is connected with the oil return, and the second working oil port is connected with the oil inlet.

[0022] In the technical solution, when the three-position four-way electromagnetic valve is in the first position, the first working oil port and the second working oil port are connected with the oil return port and disconnected with the oil inlet port. When the three-position four-way electromagnetic valve is in the second position, the first working oil port is connected with the oil inlet port, and the second working oil port is connected with the oil return port. When the three-position four-way electromagnetic valve is in the third position, the first working oil port is connected with the oil return port, and the second working oil port is connected with the oil inlet port. It can be understood that, by driving the yoke cylinder through the three-position four-way electromagnetic valve, the high-speed gear or the low-speed gear works, and after power failure, the three-position four-way electromagnetic valve returns to the first position, but the gear position of the gearbox remains unchanged, and the gearbox will not jump gears due to electromagnetic valve switching caused by coil magnetic force weakening or wire harness failure.

[0023] To achieve the second object of the present application, the second aspect of the present application provides an engineering vehicle gear shifting control system, comprising: an acquisition module configured to acquire brake oil pressure through a brake sensor; a judgment module configured to judge whether the brake oil pressure reaches a preset oil pressure value; when the brake oil pressure reaches the preset oil pressure value, judging whether the brake oil pressure is maintained for a preset time length to obtain a judgment result; and a receiving module configured to confirm whether to receive a gear shifting switch signal according to the judgment result.

[0024] According to the engineering vehicle gear shifting control system provided by the present application, the engineering vehicle gear shifting control system comprises an acquisition module, a judgment module and a receiving module. The acquisition module is configured to acquire brake oil pressure through a brake sensor. The judgment module is configured to judge whether the brake oil pressure reaches a preset oil pressure value; when the brake oil pressure reaches the preset oil pressure value, judging whether the brake oil pressure is maintained for a preset time length to obtain a judgment result. The receiving module is configured to confirm whether to receive a gear shifting switch signal according to the judgment result. When the driver shifts gears, the brake is depressed to the preset oil pressure value, and the gear position switch takes effect and the gear shifting is completed after the preset oil pressure value is maintained for a preset time length. If the preset time length is not sufficient, the gear shifting will not take effect, thereby avoiding the driver shifting gears when the vehicle is not stable, causing the vehicle to shift gears in a driving state, and the gearbox to switch gears while driving and cause tooth damage.

[0025] To achieve the third object of the present application, the third aspect of the present application provides an engineering vehicle gear shifting control system, comprising: a storage and a processor, wherein the storage stores programs or instructions executable on the processor, and the processor executes the programs or instructions to implement the engineering vehicle gear shifting control method of any one of the first aspect, thereby having the technical effects of any one of the first aspect, which will not be repeated here.

[0026] To achieve the fourth object of the present application, the fourth aspect of the present application provides a readable storage medium having programs or instructions stored thereon, and the programs or instructions are executed by a processor to implement the steps of the engineering vehicle gear shifting control method of any one of the first aspect, thereby having the technical effects of any one of the first aspect, which will not be repeated here.

[0027] To achieve the fifth object of the present application, the technical solution of the fifth aspect of the present application provides an engineering vehicle, comprising: the engineering vehicle gear shift control system according to any one of the technical solutions of the second aspect of the present application; and / or the engineering vehicle gear shift control system according to any one of the technical solutions of the third aspect of the present application; and / or the readable storage medium according to any one of the technical solutions of the fourth aspect of the present application.

[0028] According to the engineering vehicle provided by the technical solution of the present application, comprising the engineering vehicle gear shift control system according to any one of the technical solutions of the second aspect of the present application and / or the engineering vehicle gear shift control system according to any one of the technical solutions of the third aspect of the present application and / or the readable storage medium according to any one of the technical solutions of the fourth aspect of the present application, it has all the beneficial effects of the engineering vehicle gear shift control system according to any one of the technical solutions of the second aspect of the present application and / or the engineering vehicle gear shift control system according to any one of the technical solutions of the third aspect of the present application and / or the readable storage medium according to any one of the technical solutions of the fourth aspect of the present application, which will not be described here.

[0029] Additional aspects and advantages of the present application will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0031] Fig. 1 is a schematic diagram of the steps of an engineering vehicle gear shift control method according to an embodiment of the present application;

[0032] Fig. 2 is a schematic diagram of the steps of an engineering vehicle gear shift control method according to an embodiment of the present application;

[0033] Fig. 3 is a schematic diagram of the steps of an engineering vehicle gear shift control method according to an embodiment of the present application;

[0034] Fig. 4 is a schematic diagram of the steps of an engineering vehicle gear shift control method according to an embodiment of the present application;

[0035] Fig. 5 is a schematic diagram of the working principle of an engineering vehicle gear shift control method according to an embodiment of the present application;

[0036] Fig. 6 is a schematic structural diagram of an engineering vehicle gear shift control system according to an embodiment of the present application;

[0037] Fig. 7 is a schematic structural diagram of an engineering vehicle gear shift control system according to another embodiment of the present application;

[0038] Fig. 8 is a schematic structural diagram of an engineering vehicle according to an embodiment of the present application.

[0039] Correspondence between reference signs and component names in FIGS. 5 to 8 is as follows:

[0040] 10: engineering vehicle; 110: gear shift switch; 120: three-position four-way electromagnetic valve; 122: oil inlet; 124: oil return; 126: first working oil port; 128: second working oil port; 130: shift fork oil cylinder; 140: brake sensor; 150: controller; 20: engineering vehicle gear shift control system; 210: acquisition module; 220: judgment module; 230: receiving module; 30: engineering vehicle gear shift control system; 300: memory; 400: processor. Embodiments of the present application

[0041] In order to enable a more clear understanding of the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below in combination with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0042] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0043] The engineering vehicle gear shift control method and system, readable storage medium and engineering vehicle of some embodiments of the present application are described below with reference to FIGS. 1 to 8.

[0044] As shown in FIG. 1, the embodiment of the first aspect of the present application provides an engineering vehicle gear shift control method, comprising the following steps:

[0045] Step S102: acquiring brake oil pressure through a brake sensor;

[0046] Step S104: judging whether the brake oil pressure reaches a preset oil pressure value;

[0047] Step S106: judging whether the brake oil pressure is maintained for a preset time period when the brake oil pressure reaches the preset oil pressure value, to obtain a judgment result;

[0048] Step S108: confirming whether to receive a gear shift switch signal according to the judgment result.

[0049] According to the shift control method of the engineering vehicle provided in the embodiment, first, the brake oil pressure is obtained through the brake sensor, and it is judged whether the brake oil pressure reaches the preset oil pressure value. When the brake oil pressure reaches the preset oil pressure value, it is judged whether the brake oil pressure is maintained for a preset time length, and a judgment result is obtained. Finally, it is determined whether to receive the shift switch signal according to the judgment result, and whether to shift is realized. It can be understood that when the driver shifts, the brake is deeply pressed to the preset oil pressure value, and the gear position switch takes effect and the shift is completed after the preset oil pressure value is maintained for a preset time length. If the preset time length is not sufficient, the shift does not take effect, which avoids the driver shifting when the vehicle is not stable, causing the vehicle to shift in the driving state and the gear position to be switched in the driving of the gearbox.

[0050] As shown in FIG. 2, according to the shift control method of the engineering vehicle provided in an embodiment of the present application, when the brake oil pressure reaches the preset oil pressure value, it is judged whether the brake oil pressure is maintained for a preset time length, and a judgment result is obtained, which specifically includes the following steps:

[0051] Step S202: When the brake oil pressure reaches the preset oil pressure value, the brake light is turned on.

[0052] Step S204: The shift switch signal is sent through the shift switch.

[0053] Step S206: It is judged whether the brake light is bright enough for a preset time length, and a judgment result is obtained.

[0054] In this embodiment, when the brake oil pressure reaches the preset oil pressure value, it is judged whether the brake oil pressure is maintained for a preset time length, and a judgment result is obtained, which is specifically judging whether the brake oil pressure reaches the preset oil pressure value. When the brake oil pressure reaches the preset value, the brake light is turned on, which can remind the operator that the shift can be performed. The shift switch signal is sent through the shift switch, and it is judged whether the brake light is bright enough for a preset time length, and a judgment result is obtained, which can be shifted according to the judgment result. When the driver shifts, the brake is deeply pressed to the brake light, and the gear position switch takes effect and the shift is completed after the brake light is bright enough for a preset time length. If the preset time length is not sufficient, the shift does not take effect, which avoids the driver shifting when the vehicle is not stable, causing the vehicle to shift in the driving state and the gear position to be switched in the driving of the gearbox.

[0055] As shown in FIG. 3, according to the shift control method of the engineering vehicle provided in an embodiment of the present application, the engineering vehicle includes a controller, a three-position four-way electromagnetic valve and a shift fork oil cylinder. The controller is connected with the brake sensor, the shift switch and the three-position four-way electromagnetic valve respectively, the three-position four-way electromagnetic valve is connected with the shift fork oil cylinder, and whether to receive the shift switch signal is determined according to the judgment result. The control method further includes the following steps:

[0056] Step S302: When the brake light is bright enough for a preset time length, the shift switch signal is received through the controller, and the three-position four-way electromagnetic valve is controlled according to the shift switch signal to control the shift fork oil cylinder to switch the gear position.

[0057] In this embodiment, the engineering vehicle comprises a controller, a three-position four-way electromagnetic valve and a shift yoke cylinder, the controller is connected with the brake sensor, the shift switch and the three-position four-way electromagnetic valve respectively, is used for receiving the brake oil pressure acquired by the brake sensor and the shift switch signal sent by the shift switch, and controlling the three-position four-way electromagnetic valve according to the shift switch signal, the three-position four-way electromagnetic valve is connected with the shift yoke cylinder, and is used for controlling the shift yoke cylinder to switch the gear. According to the judgment result, whether the shift switch signal is received is specifically that when the brake light is bright enough for a preset time length, the shift switch signal is received through the controller, and the three-position four-way electromagnetic valve is controlled according to the shift switch signal, so as to control the shift yoke cylinder to switch the gear. By driving the shift yoke cylinder through the three-position four-way electromagnetic valve, the electromagnetic valve can return to the neutral position after losing power when working in the high-speed gear or the low-speed gear, but the gearbox gear remains unchanged, and the gearbox gear shifting caused by electromagnetic valve switching due to coil magnetic force weakening or wire harness failure is avoided.

[0058] As shown in FIG. 4, the engineering vehicle gear shifting control method according to one embodiment of the present application further comprises the following steps:

[0059] Step S402: after switching the gear, control the corresponding gear light to be bright, and the gear light comprises a high-speed gear light and a low-speed gear light.

[0060] In this embodiment, after switching the gear, the corresponding gear light is controlled to be bright, which can remind the operator that the gear shifting is successful. The gear light comprises a high-speed gear light and a low-speed gear light.

[0061] As shown in FIG. 5, in some embodiments, the three-position four-way electromagnetic valve 120 comprises an oil inlet 122, an oil return port 124, a first working oil port 126 and a second working oil port 128, the first working oil port 126 is connected with the first end of the shift yoke cylinder 130, and the second working oil port 128 is connected with the second end of the shift yoke cylinder 130.

[0062] In some embodiments, when the three-position four-way electromagnetic valve 120 is in the first position, the first working oil port 126 and the second working oil port 128 are both connected with the oil return port 124 and disconnected with the oil inlet 122. When the three-position four-way electromagnetic valve 120 is in the second position, the first working oil port 126 is connected with the oil inlet 122, and the second working oil port 128 is connected with the oil return port 124. When the three-position four-way electromagnetic valve 120 is in the third position, the first working oil port 126 is connected with the oil return port 124, and the second working oil port 128 is connected with the oil inlet 122. It can be understood that by driving the shift yoke cylinder 130 through the three-position four-way electromagnetic valve 120, when working in the high-speed gear or the low-speed gear, the three-position four-way electromagnetic valve 120 returns to the first position after losing power, but the gearbox gear remains unchanged, and the gearbox gear shifting caused by electromagnetic valve switching due to coil magnetic force weakening or wire harness failure is avoided.

[0063] As shown in FIG. 6, the embodiment of the second aspect of the present application provides an engineering vehicle gear shifting control system 20, comprising: an acquisition module 210, configured to acquire brake oil pressure through a brake sensor; a judgment module 220, configured to judge whether the brake oil pressure reaches a preset oil pressure value; when the brake oil pressure reaches the preset oil pressure value, judge whether the brake oil pressure is maintained for a preset time length to obtain a judgment result; and a receiving module 230, configured to confirm whether to receive a gear shifting switch signal according to the judgment result.

[0064] According to the engineering vehicle gear shifting control system 20 provided by the present application, the engineering vehicle gear shifting control system 20 comprises the acquisition module 210, the judgment module 220 and the receiving module 230. The acquisition module 210 is configured to acquire brake oil pressure through a brake sensor. The judgment module 220 is configured to judge whether the brake oil pressure reaches a preset oil pressure value; when the brake oil pressure reaches the preset oil pressure value, judge whether the brake oil pressure is maintained for a preset time length to obtain a judgment result. The receiving module 230 is configured to confirm whether to receive a gear shifting switch signal according to the judgment result. When the driver shifts gears, the brake is depressed to the preset oil pressure value, and the gear position switch is effective and the gear shifting is completed after the preset oil pressure value is maintained for a preset time length, otherwise the gear shifting is not effective, which avoids the driver shifting gears when the vehicle is not stable, causing the vehicle to shift gears in the driving state and the gear position to be switched in the driving state of the gearbox.

[0065] As shown in FIG. 7, the embodiment of the third aspect of the present application provides an engineering vehicle gear shifting control system 30, comprising: a storage 300 and a processor 400, wherein the storage 300 stores programs or instructions executable on the processor 400, and the processor 400 executes the programs or instructions to implement the steps of the engineering vehicle gear shifting control method of any one of the embodiments of the first aspect, thus having the technical effects of any one of the embodiments of the first aspect, which will not be repeated here.

[0066] The embodiment of the fourth aspect of the present application provides a readable storage medium having programs or instructions stored thereon, and the programs or instructions are executed by a processor to implement the steps of the engineering vehicle gear shifting control method of any one of the embodiments of the first aspect, thus having the technical effects of any one of the embodiments of the first aspect, which will not be repeated here.

[0067] The embodiment of the fifth aspect of the present application provides an engineering vehicle, comprising the engineering vehicle gear shifting control system 20 of any one of the above embodiments and / or the engineering vehicle gear shifting control system 30 of any one of the above embodiments and / or the readable storage medium of any one of the above embodiments.

[0068] According to the embodiment of the present application, the engineering vehicle comprises the engineering vehicle gear shift control system 20 of any of the above embodiments and / or the engineering vehicle gear shift control system 30 of any of the above embodiments and / or the readable storage medium of any of the above embodiments, thus having all the beneficial effects of the engineering vehicle gear shift control system 20 of any of the above embodiments and / or the engineering vehicle gear shift control system 30 of any of the above embodiments and / or the readable storage medium of any of the above embodiments, which will not be repeated here.

[0069] As shown in FIG. 5 and FIG. 8, the engineering vehicle 10 comprises a gear shift switch 110, a three-position four-way electromagnetic valve 120, a brake sensor 140, a controller 150 and a shift fork oil cylinder 130. The shift fork oil cylinder 130 is connected to the three-position four-way electromagnetic valve 120, and the three-position four-way electromagnetic valve 120 is controlled to drive the shift fork oil cylinder 130 to shift gears, so as to avoid the control of the gearbox forced shifting when the line is disturbed or the electromagnetic valve fails, thereby causing the gearbox to shift in the running state and causing the gear teeth to be damaged.

[0070] As shown in FIG. 5, according to the engineering vehicle gear shift control method provided by a specific embodiment of the present application, the driver is prevented from shifting gears when the vehicle is not stable, so as to avoid the gearbox shifting in the running state and causing the gear teeth to be damaged, and to avoid the control of the gearbox forced shifting when the line is disturbed or the electromagnetic valve fails, thereby causing the gearbox to shift in the running state and causing the gear teeth to be damaged.

[0071] Specifically, the parking gear shift control logic is changed, and the brake pedal needs to be depressed deeply (the brake oil pressure reaches a certain value) until the brake light is on, and the gear position switch needs to be effective and the gear shift needs to be completed after the brake light is on for 2 seconds, otherwise the gear shift is not effective (to avoid the vehicle shifting gears when it is not stable).

[0072] The control logic is changed, and the two-position four-way valve is changed to a three-position four-way electromagnetic valve, which adds a static position. Y5 is powered on to work in high gear, and returns to the neutral position after power off, but the gearbox position remains unchanged, and the electromagnetic valve switching caused by the coil magnetic force weakening or the line fault will not cause the gearbox to shift gears. Similarly, the low gear also works in this way, Y6 is powered on to work in low gear, and returns to the neutral position after power off. Y5 and Y6 are electromagnetic valves.

[0073] In summary, the beneficial effects of the embodiment of the present application are:

[0074] 1. Avoiding the gearbox gear teeth damage caused by the vehicle shifting gears when it is not stable.

[0075] 2. Solving the gearbox shifting caused by the abnormal switching of the electromagnetic valve due to the electromagnetic valve itself or external line fault.

[0076] In this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection; "link" can mean a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0077] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or module referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0078] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0080] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An engineering vehicle shift control method characterized by, The method comprises: acquiring brake oil pressure through a brake sensor; determining whether the brake oil pressure reaches a preset oil pressure value; when the brake oil pressure reaches the preset oil pressure value, determining whether the brake oil pressure is maintained for a preset time length to obtain a determination result; confirming whether to receive a gear shift switch signal according to the determination result.

2. The method of claim 1, wherein, The method comprises: when the brake oil pressure reaches the preset oil pressure value, making a brake light bright; sending a gear shift switch signal through a gear shift switch; determining whether the brake light is bright enough for a preset time length to obtain a determination result.

3. The method of claim 2, wherein, The engineering vehicle comprises a controller, a three-position four-way electromagnetic valve and a shift yoke cylinder, the controller is connected with the brake sensor, the gear shift switch and the three-position four-way electromagnetic valve respectively, the three-position four-way electromagnetic valve is connected with the shift yoke cylinder, and the method comprises: when the brake light is bright enough for the preset time length, receiving the gear shift switch signal through the controller and controlling the three-position four-way electromagnetic valve according to the gear shift switch signal to control the shift yoke cylinder to switch gears.

4. The method of claim 3, wherein, The method further comprises: after switching gears is completed, controlling a corresponding gear light to be bright, the gear light comprises a high-speed gear light and a low-speed gear light.

5. The engineering vehicle gear shift control method according to claim 3 or 4, wherein the three-position four-way electromagnetic valve comprises an oil inlet, an oil return, a first working oil port and a second working oil port, the first working oil port is connected with a first end of the shift yoke cylinder, and the second working oil port is connected with a second end of the shift yoke cylinder.

6. The engineering vehicle gear shift control method according to claim 5, wherein when the three-position four-way electromagnetic valve is in a first position, the first working oil port and the second working oil port are connected with the oil return and disconnected with the oil inlet; when the three-position four-way electromagnetic valve is in a second position, the first working oil port is connected with the oil inlet and the second working oil port is connected with the oil return; when the three-position four-way electromagnetic valve is in a third position, the first working oil port is connected with the oil return and the second working oil port is connected with the oil inlet.

7. An engineering vehicle shift control system characterized by, The method comprises: an acquiring module (210) configured to acquire brake oil pressure through a brake sensor; a determining module (220) configured to determine whether the brake oil pressure reaches a preset oil pressure value, and when the brake oil pressure reaches the preset oil pressure value, determine whether the brake oil pressure is maintained for a preset time length to obtain a determination result; a receiving module (230) configured to confirm whether to receive a gear shift switch signal according to the determination result.

8. An engineering vehicle shift control system characterized by, The method comprises: a memory (300) and a processor (400), wherein the memory (300) stores programs or instructions that can run on the processor (400), and the processor (400) implements the steps of the engineering vehicle gear shift control method according to any one of claims 1 to 6 when executing the programs or the instructions.

9. A readable storage medium, on which a program or instructions are stored, characterized in that, The program or the instructions, when executed by a processor, implement the steps of the method for shift control of an engineering vehicle as claimed in any one of claims 1 to 6.

10. An engineering vehicle characterized by, comprising: The shift control system of an engineering vehicle as claimed in claim 7; and / or The shift control system of an engineering vehicle as claimed in claim 8; and / or The readable storage medium as claimed in claim 9.

Images