Agricultural machinery gearbox controller

Abstract

The utility model discloses an agricultural machinery gearbox controller which comprises a gearbox control unit, the input end of the gearbox control unit is connected with a gear sensor and a gear selection button, the gear sensor is used for monitoring gears of agricultural machinery in real time, and the output end of the gearbox control unit is connected with a hydraulic valve group module. The gearbox controller is connected with the display module through CAN bus communication, the gearbox control unit outputs a corresponding signal to the hydraulic valve group module according to an input signal of the gear selection button, so that the hydraulic valve group module shifts a corresponding shifting fork, and the display module is used for displaying the current gear of the agricultural machine. The corresponding target gear is input through the gear selection button, so that the gearbox control unit outputs the corresponding signal to the hydraulic valve group module, and the hydraulic valve group module shifts the corresponding shifting fork, so that the gear switching of the gearbox is realized, an operating mechanism arranged in a cab is omitted, and the cost is reduced. And the comfort of the driver can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery gearbox technical field, concretely is a kind of agricultural machinery gearbox controller. BACKGROUND

[0002] With the continuous advancement of agricultural mechanization, the types and quantities of agricultural machinery are increasing. The development of agricultural machinery requires higher and higher gearbox, which needs to realize more accurate and flexible speed control to adapt to different agricultural operation needs.

[0003] At present, the shift mechanism of agricultural machinery gearbox is generally manually controlled shift mechanism, and the operator needs to control the shift control mechanism by manually operating the shift lever to select the appropriate gear position. At the same time, the control platform of the manually controlled mechanism needs to increase a relatively large control mechanism in design, which occupies the space in the cab, making the space in the cab relatively small, and thus adversely affecting the driving comfort of the operator. In addition, the existing mechanical control type gearbox operation is relatively complicated, and the driver needs to have high technical level. Moreover, the frequent manual shift operation increases the fatigue of farmers during long-time operation. SUMMARY

[0004] The utility model aims at the shortcoming and problem in background art for improvement and innovation, provide a kind of agricultural machinery gearbox controller.

[0005] An agricultural machinery gearbox controller, comprising a gearbox control unit, the input end of the gearbox control unit is connected with gear position sensor and gear selection button, the gear position sensor is used to monitor the gear position of agricultural machinery in real time, the output end of the gearbox control unit is connected with hydraulic valve group module, the gearbox control unit outputs corresponding signal to hydraulic valve group module according to the input signal of gear selection button, so that hydraulic valve group module pulls corresponding pull fork, the gearbox control unit is also connected with display module by CAN bus communication module, the display module is used to display the current gear position of agricultural machinery.

[0006] Further, the input end of the gearbox control unit is also connected with parking release button, and the gearbox control unit outputs corresponding signal to the hydraulic valve group module according to the input signal of the parking release button, so that the hydraulic valve group module drives the brake to separate from the brake disc.

[0007] Further, the input end of the gearbox control unit is also connected with a speed sensor, and the speed sensor is used to monitor the speed of the gearbox output shaft in real time to determine whether the current state can shift.

[0008] Further, the input end of the gearbox control unit is also connected with an oil pressure sensor, when the oil pressure monitored by the oil pressure sensor is lower than a set value, the gearbox control unit outputs corresponding signals to the hydraulic valve group module, so that the hydraulic valve group module charges the accumulator.

[0009] Further, the display module can be a display screen or an LED indicator light, and the LED indicator light is in one-to-one correspondence with the gear selection button.

[0010] Further, the hydraulic valve group module comprises a first digital switch electromagnetic valve, a second digital switch electromagnetic valve, a third digital switch electromagnetic valve, a fourth digital switch electromagnetic valve, a fifth digital switch electromagnetic valve, a sixth digital switch electromagnetic valve, a seventh digital switch electromagnetic valve and an eighth digital switch electromagnetic valve, and each electromagnetic valve receives high level or low level signals output by the output end of the gearbox control unit, so as to pull the corresponding pull fork or drive the brake and the brake disc to separate or charge the accumulator.

[0011] Further, the gear selection button and the parking release button are also connected with the gearbox control unit through the CAN bus communication module.

[0012] Further, the gear selection button has a first gear, a second gear and a third gear, the first gear is used for agricultural machinery to climb, the second gear is used for agricultural machinery to work, and the third gear is used for agricultural machinery to transfer.

[0013] Compared with the prior art, the utility model has the advantages that (1) the utility model discloses a gear selection button input corresponding target gear, so that the gearbox control unit outputs corresponding signals to the hydraulic valve group module, so that the hydraulic valve group module pulls the corresponding pull fork, thereby realizing the switching of the gearbox gear, and the operator no longer needs to manually operate the gear lever to control the gear control mechanism, thereby saving the arrangement of the control mechanism in the cab, achieving the purpose of saving the space of the cab, and improving the comfort of the driver.

[0014] (2) the utility model discloses a gear sensor in real time monitoring the gear of agricultural machinery, and displays through the display screen or the LED indicator light, which is convenient compared with the gear selection button, so that the actual gear and the selected gear can be matched in time.

[0015] (3) the utility model discloses a parking release button, which is convenient for releasing the parking brake, and through the real-time monitoring of the accumulator pressure by the oil pressure sensor, the accumulator is timely charged, the stability of the oil pressure in the electro-hydraulic system is ensured, and the stability of the gearbox gear switching mechanism is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Fig. 1 The circuit block diagram provided by the embodiments of the present application;

[0018] Fig. 2 The circuit principle block diagram provided by the embodiments of the present application.

[0019] Reference signs: T0, gearbox control unit; T1, speed sensor; T2, oil pressure sensor; T3, gear sensor; T4, hydraulic valve group module; T5, gear rotation button; T6, parking release button; T7, display module; T8, CAN bus communication module; QM0, first digital switch electromagnetic valve; QM1, second digital switch electromagnetic valve; QM2, third digital switch electromagnetic valve; QM3, fourth digital switch electromagnetic valve; QM4, fifth digital switch electromagnetic valve; QM5, sixth digital switch electromagnetic valve; QM6, seventh digital switch electromagnetic valve; QM7, eighth digital switch electromagnetic valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0021] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing the specific embodiments of the present application, and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0023] Please refer to Figs. 1-2The utility model provides an agricultural machinery gearbox controller, including gearbox control unit T0 (TCU), the input of gearbox control unit T0 is connected with gear sensor T3, gear sensor T3 is used for real -time monitoring the gear of agricultural machinery. The input of gearbox control unit T0 is connected with CAN bus communication module T8 through CAN bus, CAN bus communication module T8 is connected with parking release button T6, gear selection button T5 and display module T7 through CAN bus, CAN bus communication module T8 receives the signal of gear selection button T5 and parking release button T6, then sends the signal to gearbox control unit T0, CAN bus communication module T8 can also accept the gear signal of agricultural machinery that gearbox control unit T0 obtains, and gear signal is sent display module T7, thereby through display module T7 shows the gear of agricultural machinery currently. The output of gearbox control unit T0 is connected with hydraulic valve group module T4. Gearbox control unit T0 according to the input signal of gear selection button T5, the corresponding signal of output is given to hydraulic valve group module T4, to make hydraulic valve group module T4 pull the corresponding pull fork, select the corresponding gear, thereby realize the switching of gear. In this embodiment, gear selection button T5 includes one gear, two gears and three gears selection button, and the driver presses the corresponding gear selection button T5, and the agricultural machinery is switched to the corresponding gear. Therefore, the present application no longer depends on the operator to control the gear shifting control mechanism through manual operation gear shifting lever, thereby saving the arrangement control mechanism in the cab, and the comfort of the driver is improved.

[0024] In this embodiment, one gear is used for agricultural machinery to climb the slope, two gears are used for agricultural machinery to work, for example, harvesting corn and wheat, and three gears are used for agricultural machinery to transfer to other sites.

[0025] Optionally, the display module T7 can be a display screen or an LED indicator light, and the LED indicator light corresponds to the gear selection button T5 one by one. For example, when the gear sensor T3 monitors that the actual gear of the agricultural machinery is one gear, the gearbox control unit T0 controls the corresponding LED indicator light of the one gear selection button T5 to light, so as to facilitate the driver to judge whether the actual gear of the agricultural machinery matches the selected gear, so that the driver can timely find out whether the gearbox of the agricultural machinery has a fault. When the display module T7 is a display screen, the display screen can directly display the actual gear of the agricultural machinery monitored by the gear sensor T3.

[0026] In the embodiment, the input end of the gearbox control unit T0 is also connected with a parking release button T6. The gearbox control unit T0 outputs corresponding signals to the hydraulic valve group module T4 according to the input signals of the parking release button T6, so that the hydraulic valve group module T4 drives the brake to separate from the brake disc. When the driver presses the parking release button T6, the hydraulic valve group module T4 operates to separate the brake from the brake disc, thereby releasing the parking brake.

[0027] Preferably, the input end of the gearbox control unit T0 is also connected with a rotating speed sensor T1, which is used to monitor the rotating speed of the gearbox output shaft in real time. The gearbox control unit T0 outputs corresponding signals to the hydraulic valve group module T4 only when the rotating speed of the gearbox output shaft is lower than a set value, thereby avoiding the switching of gears during the operation of the agricultural machine.

[0028] The input end of the gearbox control unit T0 is also connected with an oil pressure sensor T2. When the oil pressure monitored by the oil pressure sensor T2 is lower than a set value, the gearbox control unit T0 outputs corresponding signals to the hydraulic valve group module T4, so that the hydraulic valve group module T4 charges the accumulator, which is beneficial to the stable maintenance of the oil pressure in the electro-hydraulic system and enhances the stability of the operation of the gearbox gear switching mechanism.

[0029] Specifically, the hydraulic valve group module T4 includes a first digital switch electromagnetic valve QM0, a second digital switch electromagnetic valve QM1, a third digital switch electromagnetic valve QM2, a fourth digital switch electromagnetic valve QM3, a fifth digital switch electromagnetic valve QM4, a sixth digital switch electromagnetic valve QM5, a seventh digital switch electromagnetic valve QM6 and an eighth digital switch electromagnetic valve QM7. The above-mentioned electromagnetic valves receive the high-level and low-level signals output by the output end of the gearbox control unit T0, so that the agricultural machine works in the parking release mode, the charging mode and the gear shifting mode, respectively. In the parking release mode, the hydraulic valve group module T4 drives the brake to separate from the brake disc to release the parking brake. In the charging mode, the hydraulic valve group module T4 charges the accumulator. In the gear shifting mode, the hydraulic valve group module T4 drives the corresponding yoke to select the corresponding gear. The electromagnetic valve level signals in each working mode of the gearbox of the agricultural machine are shown in Table 1 below. For example, when the gearbox of the agricultural machine works in the parking release mode, the gearbox control unit T0 outputs high-level to the sixth digital switch electromagnetic valve QM5 and the seventh digital switch electromagnetic valve QM6, and outputs low-level to the eighth digital switch electromagnetic valve QM7. The charging mode and the gear shifting mode are sequentially similar.

[0030] Table 1 Electromagnetic valve level signals in each working mode of the gearbox of the agricultural machine

[0031]

[0032] The utility model discloses a working principle: when the rotational speed sensor T1 monitors that the speed of agricultural machinery is lower than the set value, the gear box control unit T0 can output signal to hydraulic valve group module T4 at this moment when using specifically, the driver first presses the parking release button T6, and the parking brake is released, and then according to the monitoring result of oil pressure sensor T2 to the accumulator pressure, when the pressure is lower than the set value, control hydraulic valve group module T4 timely liquid filling of the accumulator, ensure the stable maintenance of oil pressure in electrohydraulic system, when the pressure monitored by oil pressure sensor T2 is higher than the set value, the driver presses the corresponding gear selection button T5 according to the agricultural machinery working scene at this moment, and the gear box control unit T0 can output the corresponding high level and low level signal to the corresponding electromagnetic valve, so that hydraulic valve group module T4 pulls the corresponding pull fork, thereby realizing the switching of gear box gear.

[0033] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0034] In the description of the utility model, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0035] Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. In this article, "embodiments" means that the specific features, structures or characteristics described in connection with the embodiments can be contained in at least one embodiment of the present application. The appearance of this phrase at various places in the specification is not necessarily all the same embodiments, nor is it independent or alternative to other embodiments. It can be explicitly or implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An agricultural machine gearbox controller comprising a gearbox control unit (TO), characterized in that: The input end of the gearbox control unit (T0) is connected with a gear sensor (T3) and a gear selection button (T5), the gear sensor (T3) is used for monitoring the gear of the agricultural machinery in real time, the output end of the gearbox control unit (T0) is connected with a hydraulic valve group module (T4), the gearbox control unit (T0) outputs corresponding signals to the hydraulic valve group module (T4) according to the input signals of the gear selection button (T5), so that the hydraulic valve group module (T4) pulls the corresponding yoke, the gearbox control unit (T0) is also connected with a display module (T7) through a CAN bus communication module (T8), and the display module (T7) is used for displaying the current gear of the agricultural machinery.

2. An agricultural machine transmission controller according to claim 1, characterized in that: The input end of the gearbox control unit (T0) is also connected with a parking release button (T6), and the gearbox control unit (T0) outputs corresponding signals to the hydraulic valve group module (T4) according to the input signals of the parking release button (T6), so that the hydraulic valve group module (T4) drives the brake to separate from the brake disc.

3. An agricultural machine transmission controller according to claim 2, characterised in that: The input end of the gearbox control unit (T0) is also connected with a speed sensor (T1), and the speed sensor (T1) is used for monitoring the speed of the gearbox output shaft in real time, so as to judge whether the current state can be shifted.

4. An agricultural machine transmission controller according to claim 3, characterised in that: The input end of the gearbox control unit (T0) is also connected with an oil pressure sensor (T2), and when the oil pressure monitored by the oil pressure sensor (T2) is lower than the set value, the gearbox control unit (T0) outputs corresponding signals to the hydraulic valve group module (T4), so that the hydraulic valve group module (T4) charges the accumulator.

5. An agricultural machine transmission controller according to claim 1, wherein: The display module (T7) can be a display screen or an LED indicator, and the LED indicator corresponds to the gear selection button (T5) one by one.

6. The agricultural machinery gearbox controller according to claim 4, characterized in that: The hydraulic valve group module (T4) comprises a first digital switch electromagnetic valve (QM0), a second digital switch electromagnetic valve (QM1), a third digital switch electromagnetic valve (QM2), a fourth digital switch electromagnetic valve (QM3), a fifth digital switch electromagnetic valve (QM4), a sixth digital switch electromagnetic valve (QM5), a seventh digital switch electromagnetic valve (QM6) and an eighth digital switch electromagnetic valve (QM7), and each of the above-mentioned electromagnetic valves receives the high level or low level signals output by the output end of the gearbox control unit (T0), so as to pull the corresponding yoke, drive the brake to separate from the brake disc or charge the accumulator.

7. An agricultural machine transmission controller according to claim 2, wherein: The gear selection button (T5) and the parking release button (T6) are also connected with the gearbox control unit (T0) through the CAN bus communication module (T8).

8. An agricultural machine transmission controller according to claim 1, wherein: The gear selection button has a first gear, a second gear and a third gear, the first gear is used for the agricultural machinery to climb, the second gear is used for the agricultural machinery to work, and the third gear is used for the agricultural machinery to transfer.

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