Gearbox structure with shifting block driven by motor to achieve gear shifting

Abstract

The utility model relates to the technical field of gearboxes, in particular to a gearbox structure with a motor driving a shifting block to achieve gear shifting. Comprising a control button, a controller and a gearbox assembly, and the controller is connected with the control button in a cab and the gearbox assembly at an engine through wire harnesses; a gear shifting mechanism is installed on a top cover of the gearbox assembly, a stepping motor is installed on the side portion of the gear shifting mechanism, the control end of the stepping motor is connected with the controller, and the rotating shaft end of the stepping motor is connected with a shifting block in the gear shifting mechanism. The controller is connected with the control button in the cab and the gearbox assembly at the position of the engine, meanwhile, the gear shifting mechanism is installed on the top cover of the gearbox assembly, the stepping motor is installed on the side portion of the gear shifting mechanism, a gearbox structure in which the motor drives the shifting block to achieve gear shifting is constructed, and gear shifting is more accurate and efficient.

Description

TECHNICAL FIELD

[0001] The utility model relates to gearbox technical field, concretely relates to a gearbox structure that gear shifting is realized to motor drive plunger. BACKGROUND

[0002] The existing gearbox shifting device mainly has two kinds of manual shifting and electro-hydraulic shifting. Manual shifting is time-consuming and laborious, and has high labor intensity, and the shifting mechanism is easy to wear and tear, and shifting delay occurs, and a shifting rocker arm also needs to be equipped, which occupies a large space and often leads to shifting difficulty. The electro-hydraulic shifting mechanism uses an electromagnetic valve to control a hydraulic valve to realize shifting, but the cost is high, the failure rate is high, and the maintenance operation is not easy. For example, the two-gear mechanical gearbox shifting mechanism with the authorized publication number CN209278461U of Chinese patent, although the shifting yoke is placed on the side of the shifting motor to improve the space utilization rate, but the fundamental problem of the traditional shifting mode has not been solved. With the continuous development of electrification in the field of agricultural equipment, the limitations of the traditional shifting mode in shifting precision and efficiency are increasingly prominent, and it is difficult to meet the needs of modern agricultural machinery for efficient and accurate shifting. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a gearbox structure that gear shifting is realized to motor drive plunger.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A gearbox structure that gear shifting is realized to motor drive plunger, comprising a control button, a controller and a gearbox assembly, the controller is connected with the control button in the cab and the gearbox assembly at the engine through a wire harness respectively; a shifting mechanism is installed on the top cover of the gearbox assembly, a stepping motor is installed on the side of the shifting mechanism, the control end of the stepping motor is connected with the controller, and the rotating shaft end of the stepping motor is connected with the plunger in the shifting mechanism.

[0006] The technical scheme connects the controller with the control button in the cab and the gearbox assembly at the engine respectively, installs the shifting mechanism on the top cover of the gearbox assembly, and installs the stepping motor on the side of the shifting mechanism, thereby constructing a gearbox structure that gear shifting is realized to motor drive plunger. Specifically, the control button in the cab serves as a signal input source, and the driver sends a shifting signal by pressing different buttons. After receiving the signal of the control button, the controller controls the stepping motor to perform a shifting action. During the shifting process, the stepping motor first moves the plunger to the middle position of the neutral position, and then rotates a corresponding number of steps to move the plunger, the plunger block and the yoke to the specified gear position. The advantage of this scheme is that the driver does not need to manually operate the mechanical shifting lever, thereby reducing the labor intensity, and the effect is more obvious especially in the case of long-time driving and frequent shifting; at the same time, this scheme can adapt to gearbox assemblies of different types of harvesters.

[0007] It should be noted that the utility model only improves the hardware structure, and does not improve the software algorithm of the controller, which meets the object requirements of the utility model.

[0008] In addition, the gearbox structure for realizing gear shifting by the motor driving the shifting head according to the utility model can have the following additional technical features:

[0009] According to one embodiment of the utility model, the stepping motor includes motors I and II arranged side by side, and the motors I and II are connected to the controller through respective wire harnesses. Specifically, according to one embodiment of the utility model, the motor I is a first gear motor, the first gear motor is connected to a first gear shifting head, the first gear shifting head drives a first gear tooth hub to engage with a first gear driven gear through a first gear shifting fork, and first gear shifting is realized. The motor II is a second / third gear motor, the second / third gear motor is connected to a second / third gear shifting head through forward and reverse rotation control, the second / third gear shifting head drives a second / third gear tooth hub to engage with a second gear driven gear or a third gear driven gear through a second / third gear shifting fork, and second / third gear shifting is realized.

[0010] In the technical solution, the motor I is responsible for first gear shifting, and the motor II is responsible for second / third gear shifting, which are connected to the controller through independent wire harnesses to realize independent control of different gear shifting. The motor I as a first gear motor directly drives the first gear shifting head through mechanical connection. The first gear shifting head is connected to the first gear shifting fork, and the shifting fork moves under the driving of the shifting head to engage the first gear tooth hub with the first gear driven gear. The motor II as a second / third gear motor controls the moving direction of the second / third gear shifting head through forward and reverse rotation. When rotating forward, the shifting head drives the second gear shifting fork to engage the second gear tooth hub with the second gear driven gear; when rotating reversely, the shifting head drives the third gear shifting fork to engage the third gear tooth hub with the third gear driven gear.

[0011] According to one embodiment of the utility model, the control button is sequentially provided with N gears, a first gear, a second gear and a third gear, a total of four gears.

[0012] In the technical solution, the N gear is usually used as a starting or pausing position for the convenience of the driver when starting, parking or temporarily stopping; the first gear, the second gear and the third gear are arranged in the order of increasing power output, so that the driver can quickly select the appropriate gear according to the driving needs.

[0013] According to one embodiment of the utility model, the controller is installed in the fixed frame of the agricultural machine, and the controller is built-in with a control board, and the control board is provided with a terminal interface connected to the wire harness.

[0014] In the technical solution, the fixed frame is convenient to disassemble and install, which is used to reduce the influence of vibration and impact on the controller. The terminal interface on the control board adopts a standardized structure to facilitate the expansion of the range of applicable agricultural machines.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] This invention connects the controller to the control buttons in the driver's cab and the gearbox assembly at the engine, respectively. At the same time, a shifting mechanism is installed on the top cover of the gearbox assembly, and a stepper motor is installed on the side of the shifting mechanism, thus constructing a gearbox structure in which the motor drives the shifter to achieve shifting, making shifting more precise and efficient. Attached Figure Description

[0017] Figure 1 This is the electrical connection diagram of this utility model.

[0018] Figure 2 It is a 3D diagram of the gearbox assembly and shifting mechanism.

[0019] Figure 3 This is a top view of the gearbox assembly and shifting mechanism.

[0020] In the diagram: 1. Control button; 2. Controller; 3. Gearbox assembly; 4. Shifting mechanism; 5. Stepper motor; 51. Motor I; 52. Motor II. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figure 1 As shown, this embodiment provides a gearbox structure in which a motor drives a shift lever to achieve gear shifting. It includes a control button 1, a controller 2, and a gearbox assembly 3. The controller 2 is connected to the control button 1 in the cab and the gearbox assembly 3 at the engine via wiring harnesses. A shift mechanism 4 is installed on the top cover of the gearbox assembly 3. A stepper motor 5 is installed on the side of the shift mechanism 4. The control end of the stepper motor 5 is connected to the controller 2, and the shaft end of the stepper motor 5 is connected to the shift lever inside the shift mechanism 4.

[0024] like Figures 1 to 3As shown, the technical scheme is connected with the control button 1 in the cab and the gearbox assembly 3 at the engine through the controller 2, and the shift mechanism 4 is installed on the top cover of the gearbox assembly 3, and the stepping motor 5 is installed on the side of the shift mechanism 4, thereby constructing a gearbox structure of shifting by the motor driving the shift head. Specifically, the control button 1 in the cab is used as the signal input source, and the driver sends the shift signal by pressing different buttons. After receiving the signal of the control button 1, the controller 2 controls the stepping motor 5 to perform the shift action. During the shift process, the stepping motor 5 first moves the shift head to the middle position of the neutral position, and then rotates the corresponding number of steps to move the shift head, the shift block and the shift fork to the specified gear position. The advantage of the scheme is that the driver does not need to manually operate the mechanical shift lever, thereby reducing the labor intensity, and the effect is more obvious especially in the case of long-time driving and frequent shifting; meanwhile, the scheme can adapt to different models of the receiver gearbox assembly 3.

[0025] It should be noted that the hardware structure is improved in the utility model, and the software algorithm of the controller 2 is not improved, which meets the object requirements of the utility model.

[0026] In addition, the gearbox structure of shifting by the motor driving the shift head according to the utility model can have the following additional technical features:

[0027] As shown in Figure 2 and Figure 3 , the stepping motor 5 includes the motors I 51 and II 52 arranged side by side, and the motors I 51 and II 52 are connected with the controller 2 through respective wire harnesses. Specifically, according to an embodiment of the utility model, the motor I 51 is a first gear motor, the first gear motor is connected with a first gear shift head, the first gear shift head drives a first gear tooth hub to engage with a first gear driven gear through a first gear shift fork, and first gear shifting is realized. The motor II 52 is a second / third gear motor, the second / third gear motor is connected with a second / third gear shift head through forward and reverse rotation control, the second / third gear shift head drives a second / third gear tooth hub to engage with a second gear driven gear or a third gear driven gear through a second / third gear shift fork, and second / third gear shifting is realized.

[0028] In the technical scheme, the motor I 51 is responsible for first gear shifting, and the motor II 52 is responsible for second / third gear shifting, which are connected with the controller 2 through independent wire harnesses, thereby realizing independent control of different gear shifting. The motor I 51 as a first gear motor directly drives the first gear shift head through mechanical connection. The first gear shift head is connected with the first gear shift fork, and the shift fork moves under the driving of the shift head, so that the first gear tooth hub engages with the first gear driven gear. The motor II 52 as a second / third gear motor controls the moving direction of the second / third gear shift head through forward and reverse rotation. When forward rotating, the shift head drives the second gear shift fork, so that the second gear tooth hub engages with the second gear driven gear; when reverse rotating, the shift head drives the third gear shift fork, so that the third gear tooth hub engages with the third gear driven gear.

[0029] According to one embodiment of the present invention, the control button 1 is provided with four gears in sequence: N gear, first gear, second gear and third gear.

[0030] In this technical solution, the N gear is usually used as the start or pause position, which is convenient for the driver to use when starting, stopping or making a short stop; the first, second and third gears are arranged in the order of increasing power output, so that the driver can quickly select the appropriate gear according to driving needs.

[0031] According to one embodiment of the present invention, the controller 2 is installed in the fixed frame of the agricultural machinery, and the controller 2 has a built-in control board with a terminal interface connected to the wiring harness.

[0032] In this technical solution, the mounting bracket is easy to disassemble and install, and is used to reduce the impact of vibration and shock on the controller 2. The terminal interfaces on the control board adopt a standardized structure, which facilitates the expansion of the range of agricultural machinery to which they are applicable.

[0033] Compared with the prior art, this utility model has the following advantages:

[0034] This utility model connects the controller 2 to the control button 1 in the cab and the gearbox assembly 3 at the engine. At the same time, a shift mechanism 4 is installed on the top cover of the gearbox assembly 3, and a stepper motor 5 is installed on the side of the shift mechanism 4, thus constructing a gearbox structure in which the motor drives the shift head to achieve shifting, making shifting more precise and efficient.

[0035] The usage process of the above embodiments is as follows:

[0036] like Figures 1 to 3 As shown, the driver presses the corresponding gear position on control button 1 in the cab, such as N, first gear, second gear, or third gear. Control button 1 transmits the shift signal to controller 2 through the wiring harness. After receiving the signal, controller 2 controls the corresponding stepper motor 5. If it is a first gear shift, controller 2 starts motor I 51. Motor I 51 drives the first gear shift head to move to the neutral position and then rotates to the first gear position, causing the first gear shift fork and the first gear hub to mesh with the first gear driven gear. If it is a second / third gear shift, controller 2 starts motor II 52 to rotate in both directions, driving the second / third gear shift head to the corresponding position, causing the second / third gear shift fork and the hub to mesh with the corresponding driven gear, thus completing the second or third gear shift.

[0037] Although the utility model has been described in detail by referring to the drawings and in conjunction with the preferred embodiments, the utility model is not limited thereto. Without departing from the spirit and essence of the utility model, those skilled in the art can make various equivalent modifications or replacements to the embodiments of the utility model, and these modifications or replacements shall be within the scope of the utility model. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, and these changes or replacements shall be within the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the protection scope of the claims.

Claims

1. A gearbox structure for gear shifting by a motor driven shift knob, comprising a control button (1), a controller (2) and a gearbox assembly (3), characterized in that, The controller (2) is connected with the control button (1) in the cab and the gearbox assembly (3) at the engine through the wire harness respectively; the shift mechanism (4) is installed on the top cover of the gearbox assembly (3), the side of the shift mechanism (4) is installed with the stepping motor (5), the control end of the stepping motor (5) is connected with the controller (2), and the rotating shaft end of the stepping motor (5) is connected with the shift knob in the shift mechanism (4).

2. The gearbox structure of claim 1, wherein The stepping motor (5) comprises the motor I (51) and the motor II (52) arranged side by side, the motor I (51) and the motor II (52) are connected with the controller (2) through the wire harness respectively.

3. The gearbox structure of claim 2, wherein the electric motor drives the shift knob to perform the gear shifting. The motor I (51) is a first-gear motor, the first-gear motor is connected with the first-gear shift knob, the first-gear shift knob drives the first-gear gear hub to mesh with the first-gear driven gear through the first-gear shift fork, and the first-gear shifting is realized.

4. The gear shift structure of claim 2, wherein The motor II (52) is a second / third-gear motor, the second / third-gear motor drives the second / third-gear shift knob to be connected with the second / third-gear shift fork through the forward and reverse rotation, the second / third-gear shift fork drives the second / third-gear gear hub to mesh with the second-gear driven gear or the third-gear driven gear, and the second / third-gear shifting is realized.

5. The gear shift structure of claim 1, wherein the shift knob is formed of a material having a predetermined elasticity. The control button (1) is sequentially provided with N gear, first gear, second gear and third gear, and a total of four gear positions.

6. The gear shift structure of claim 1, wherein The controller (2) is installed in the fixed frame of the agricultural machine, the controller (2) is provided with the terminal interface connected with the wire harness.

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