Braking system and vehicle

Abstract

This application provides a braking device and a vehicle. The braking device includes: a clutch for connecting to a front axle assembly and a transmission respectively, and the clutch is also used to drive the front axle assembly with the power output by the transmission when closed; and a first brake for connecting to the clutch and the transmission respectively, and the first brake is also used to provide braking force to the front axle assembly. Compared with the brakes in the prior art that are located on the front axle assembly, the first brake can be integrated with the transmission, which is more compact and facilitates wiring harness layout and electronic control, greatly saving layout space and solving the problem of the large layout space occupied by the brakes in the prior art.

Description

Technical Field

[0001] This application relates to the field of braking technology, and more specifically, to a braking device and a vehicle. Background Technology

[0002] Tractor braking functions are generally divided into service brakes and parking brakes. In existing tractor technology, the service brake system is usually located on the left and right output half shafts of the rear axle and achieves braking through the rear wheels.

[0003] With the recent trend towards larger tractors, the overall weight of the vehicle has been increasing year by year. According to E=1 / 2mv 2 It is known that the required braking energy increases with the weight of the tractor. In existing technology, the rear wheel brakes bear the entire braking function of the tractor. To meet the above braking energy requirements, the brake specifications need to be continuously increased, and the rear axle also needs to have more space for brake installation. The ultimate consequence of this is insufficient space for the tractor's rear axle, or insufficient braking capacity within the limited space of the tractor's rear axle. Utility Model Content

[0004] The main objective of this application is to provide a braking device and a vehicle to solve the problem that brakes occupy a large amount of space in the prior art.

[0005] To achieve the above objectives, according to one aspect of this application, a braking device is provided, comprising: a clutch for connecting to a front axle assembly and a transmission respectively, the clutch further being configured to, when closed, cause power output by the transmission to drive the front axle assembly; and a first brake for connecting to the clutch and the transmission respectively, the first brake further being configured to provide braking force to the front axle assembly.

[0006] Optionally, the braking device further includes a rear axle assembly, which includes a second brake, a first drive axle, and a rear wheel. The second brake is used to connect to the first drive axle and the rear wheel respectively, and the second brake is also used to provide braking force to the rear wheel.

[0007] Optionally, the second brake further includes: a third brake for connecting to the first drive axle and the right rear wheel respectively, the third brake also for providing braking force to the right rear wheel; and a fourth brake for connecting to the first drive axle and the left rear wheel respectively, the fourth brake also for providing braking force to the left rear wheel.

[0008] Optionally, the braking device further includes a controller connected to the clutch, the controller being used to control the opening and closing of the clutch.

[0009] Optionally, the braking device further includes a load sensor located at the bottom of the loading component, and the controller is also connected to the load sensor. The controller is also used to control the clutch to close when the load is greater than a predetermined load.

[0010] Optionally, the braking device further includes a vehicle speed sensor located on any one of the wheels. The controller is connected to the vehicle speed sensor, the first brake, and the second brake. The controller is also used to control the second brake to provide braking force when the vehicle speed is greater than a first predetermined vehicle speed and the clutch is engaged, and to control the first brake to provide braking force when the vehicle speed decreases to a second predetermined vehicle speed and the clutch is engaged.

[0011] Optionally, the braking device further includes a vehicle speed sensor located on any one of the wheels. The controller is connected to the vehicle speed sensor, the first brake, and the second brake, respectively. The controller is also used to control the second brake to enable braking force when the clutch is disengaged and the vehicle speed is less than a first predetermined vehicle speed.

[0012] Optionally, the braking device further includes a vehicle speed sensor located on any one of the wheels. The controller is connected to the vehicle speed sensor, the first brake, and the second brake, respectively. The controller is also used to control the first brake and the second brake to enable braking force when the clutch is closed and the vehicle speed is less than a third predetermined vehicle speed.

[0013] According to another aspect of this application, a vehicle is provided, the vehicle including any of the braking devices described above.

[0014] Optionally, the braking device further includes a rear axle assembly, which includes a second brake, a first drive axle, and a rear wheel. The second brake is used to connect to the first drive axle and the rear wheel respectively, and the second brake is also used to provide braking force to the rear wheel.

[0015] By applying the technical solution of this application, in the above-mentioned braking device, the first brake is located between the clutch and the transmission to provide braking force to the front axle assembly when the clutch is closed. Compared with the brakes in the prior art that are set in the front axle assembly, the first brake can be integrated with the transmission, which is more compact and facilitates wiring harness layout and electronic control, greatly saving layout space and solving the problem that the brake occupies a large layout space in the prior art. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 A schematic diagram of a braking device according to an embodiment of this application is shown.

[0018] The above figures include the following reference numerals:

[0019] 10. Continuously variable transmission (CVT) assembly; 11. Clutch; 12. First brake; 13. Transmission; 14. Rear PTO; 20. Front axle assembly; 21. Second drive axle; 22. Right front wheel; 23. Left front wheel; 30. Rear axle assembly; 31. Third brake; 32. Fourth brake; 33. First drive axle; 34. Right rear wheel; 35. Left rear wheel; 40. Engine. Detailed Implementation

[0020] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, the element may be directly on the other element, or there may be an intermediate element present. Furthermore, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element, or "connected" to the other element via a third element.

[0023] The following explains the technical terms used in this application:

[0024] Service brakes: The braking function that enables a moving vehicle to decelerate smoothly or come to a stop.

[0025] Parking brake: A braking function that keeps a vehicle stationary.

[0026] Four-wheel drive clutch: A clutch used by a vehicle to engage and disengage the front and rear wheel drives, enabling either two-wheel drive or four-wheel drive functionality.

[0027] As described in the background section, existing brakes occupy a large amount of space. To address this issue, this application proposes a braking device, such as... Figure 1 As shown, the above-mentioned braking device includes:

[0028] The clutch 11 is used to connect to the front axle assembly 20 and the transmission 13 respectively. When the clutch 11 is closed, it also enables the power output by the transmission 13 to drive the front axle assembly 20.

[0029] The first brake 12 is used to connect to the clutch 11 and the transmission 13 respectively, and the first brake 12 is also used to provide braking force to the front axle assembly 20.

[0030] In the aforementioned braking device, the first brake is located between the clutch and the transmission to provide braking force to the front axle assembly when the clutch is engaged. Compared to the brakes in the prior art that are located in the front axle assembly, the first brake can be integrated with the transmission, which is more compact and facilitates wiring harness layout and electronic control, greatly saving layout space and solving the problem of the large layout space occupied by the brakes in the prior art.

[0031] It should be noted that, as Figure 1 As shown, the clutch 11, the first brake 12, and the transmission 13 form a continuously variable transmission assembly 10, which is integrated in a compact space and facilitates wiring harness layout and electronic control, greatly saving layout space. In addition, the front axle assembly 20 includes a second drive axle 21, a right front wheel 22, and a left front wheel 23. The second drive axle 21 is connected to the clutch 11, so that when the clutch 11 is closed, power is output to the second drive axle 21 to drive the right front wheel 22 and the left front wheel 23.

[0032] To improve braking capability, one alternative implementation method is as follows: Figure 1 As shown, the braking device further includes a rear axle assembly 30, which includes a second brake, a first drive axle 33, and a rear wheel. The second brake is used to connect to the first drive axle 33 and the rear wheel respectively, and the second brake is also used to provide braking force to the rear wheel.

[0033] In the above embodiments, such as Figure 1As shown, the second brake is installed in the rear axle assembly 30 and is connected to the first drive axle 33 and the rear wheel respectively, thus providing braking force to the corresponding rear wheel. The first brake and the second brake work together to provide braking force, which greatly improves the braking capacity and saves the rear axle braking space. The rear axle does not need to continuously increase the installation space of the brake, which solves the problem of insufficient rear axle layout space or insufficient braking capacity in the limited rear axle space, and improves the reliability of the braking system.

[0034] To achieve braking of the right rear wheel, one alternative implementation is as follows: Figure 1 As shown, the second brake also includes:

[0035] The third brake 31 is used to connect to the first drive axle 33 and the right rear wheel 34 respectively, and the third brake 31 is also used to provide braking force to the right rear wheel 34.

[0036] In the above embodiment, the third brake 31 is located between the first drive axle 33 and the right rear wheel 34, and is used to provide braking force to the right rear wheel 34 so as to achieve braking through the right rear wheel.

[0037] To achieve braking of the left rear wheel, one alternative implementation is as follows: Figure 1 As shown, the second brake also includes:

[0038] The fourth brake 32 is used to connect to the first drive axle 33 and the left rear wheel 35 respectively, and the fourth brake 32 is also used to provide braking force to the left rear wheel 35.

[0039] In the above embodiment, the fourth brake 32 is located between the first drive axle 33 and the left rear wheel 35, and is used to provide braking force to the left rear wheel 35 so as to achieve braking through the left rear wheel.

[0040] It should be noted that the third brake 31 and the fourth brake 32 mentioned above work together to provide braking force, which greatly improves the braking capacity of the rear axle.

[0041] To allow for flexible control of the driving and braking modes, in one optional embodiment, the braking device further includes:

[0042] A controller is connected to the clutch 11 and is used to control the opening and closing of the clutch 11.

[0043] In the above embodiments, the clutch 11 is a four-wheel drive clutch. The controller controls the opening and closing of the four-wheel drive clutch to realize the rear wheel two-wheel drive function or the front and rear wheel four-wheel drive function. Of course, when the clutch 11 is closed, the first brake 12 can provide braking force to the front axle assembly 20. When the clutch 11 is disengaged, the first brake 12 cannot provide braking force to the front axle assembly 20, thus realizing flexible control.

[0044] To improve the reliability of the braking system, in one optional embodiment, the braking device further includes a load sensor located at the bottom of the loading component, and the controller is also connected to the load sensor. The controller is also used to control the clutch 11 to close when the load is greater than a predetermined load.

[0045] In the above embodiments, when the load is greater than the predetermined load, the rear axle brake (second brake) alone is insufficient to meet the braking capacity requirements. By controlling the clutch to close, the front axle brake (first brake) can assist in outputting braking force, greatly improving the braking capacity and enhancing the reliability of the braking system. Of course, when the load is lower than the predetermined load, the rear axle brake (second brake) alone can meet the braking capacity requirements, and the clutch cannot be closed.

[0046] In an optional embodiment, to achieve the front wheel auxiliary braking mode, the braking device further includes a vehicle speed sensor located on any one wheel. The controller is connected to the vehicle speed sensor, the first brake 12, and the second brake, respectively. The controller is also used to control the second brake to enable braking force when the vehicle speed is greater than a first predetermined vehicle speed and the clutch 11 is engaged, and to control the first brake 12 to enable braking force when the vehicle speed is reduced to a second predetermined vehicle speed and the clutch 11 is engaged.

[0047] In the above embodiment, when the vehicle speed during braking is greater than the first predetermined speed V0, the rear wheel brakes are used to brake and decelerate the vehicle. When the speed decreases to the second predetermined speed... Then, the front wheel brakes are engaged while the rear wheel brakes are disengaged, and braking is achieved solely through the front wheel brakes. This braking mode is the front wheel auxiliary braking mode. Second predetermined speed. It is also set according to the capability matching of the second brake.

[0048] In order to achieve the rear wheel braking mode, in one optional embodiment, the braking device further includes a vehicle speed sensor located on any one wheel. The controller is connected to the vehicle speed sensor, the first brake 12, and the second brake, respectively. The controller is also used to control the second brake to enable the provision of braking force when the clutch 11 is disengaged and the vehicle speed is less than a first predetermined vehicle speed.

[0049] In the above embodiment, when the vehicle speed during braking is lower than the first predetermined speed V0, braking deceleration is achieved by enabling the rear wheel brakes, while the front wheel brakes are disabled in this mode. The first predetermined speed V0 is set according to the capability matching of the second brake.

[0050] In order to achieve the simultaneous braking mode of the front and rear wheels, in an optional embodiment, the braking device further includes a vehicle speed sensor located on any one of the wheels. The controller is connected to the vehicle speed sensor, the first brake 12 and the second brake respectively. The controller is also used to control the first brake 12 and the second brake to enable the provision of braking force when the clutch 11 is closed and the vehicle speed is less than a third predetermined vehicle speed.

[0051] In the above embodiments, both the rear wheel braking mode and the front wheel auxiliary braking mode can be switched to the simultaneous braking mode of the front and rear wheels. That is, when the clutch 11 is closed and the vehicle speed is less than the third predetermined vehicle speed, the first brake 12 and the second brake are controlled to provide braking force, thereby increasing the braking capacity by braking the front and rear wheels simultaneously.

[0052] This application also proposes a vehicle that includes the aforementioned braking device.

[0053] The aforementioned vehicle includes a braking device. The first brake of the braking device is located between the clutch and the transmission to provide braking force to the front axle assembly when the clutch is engaged. Compared with the brakes in the prior art that are located in the front axle assembly, the first brake can be integrated with the transmission, which is more compact and facilitates wiring harness layout and electronic control, greatly saving interior space and solving the problem of the large space occupied by the brakes in the prior art.

[0054] It should be noted that the above-mentioned vehicles include various types, such as tractors, forklifts, and trucks. Figure 1 As shown, the vehicle also includes a rear PTO 14, which can be a tipping mechanism or a bucket mechanism, and the engine 40 is also used to provide power to the rear PTO 14.

[0055] To improve braking capability, one alternative implementation method is as follows: Figure 1 As shown, the braking device of the vehicle also includes a rear axle assembly 30, which includes a second brake, a first drive axle 33 and a rear wheel. The second brake is used to connect to the first drive axle 33 and the rear wheel respectively, and the second brake is also used to provide braking force to the rear wheel.

[0056] In the above embodiments, such as Figure 1 As shown, the second brake is installed in the rear axle assembly 30 and is connected to the first drive axle 33 and the rear wheel respectively, thus providing braking force to the corresponding rear wheel. The first brake and the second brake work together to provide braking force, which greatly improves the braking capacity and saves the rear axle braking space. The rear axle does not need to continuously increase the installation space of the brake, which solves the problem of insufficient rear axle layout space or insufficient braking capacity in the limited rear axle space, and improves the reliability of the braking system.

[0057] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0058] In the braking device of this application, the first brake is located between the clutch and the transmission to provide braking force to the front axle assembly when the clutch is closed. Compared with the brakes in the prior art that are located in the front axle assembly, the first brake can be integrated with the transmission, which is more compact and facilitates wiring harness layout and electronic control, greatly saving layout space and solving the problem of the large layout space occupied by the brakes in the prior art.

[0059] The above description is merely a preferred embodiment of this application and is 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.

Claims

1. A brake device characterized by comprising: include: The clutch (11) is used to connect to the front axle assembly (20) and the transmission (13) respectively, and the clutch (11) is also used to drive the front axle assembly (20) with the power output by the transmission (13) when closed. A first brake (12) is used to connect to the clutch (11) and the transmission (13) respectively, and the first brake (12) is also used to provide braking force to the front axle assembly (20).

2. The brake device according to claim 1, characterized by The braking device further includes a rear axle assembly (30), which includes a second brake, a first drive axle (33), and a rear wheel. The second brake is used to connect to the first drive axle (33) and the rear wheel respectively, and the second brake is also used to provide braking force to the rear wheel.

3. The braking device according to claim 2, characterized in that, The second brake includes: A third brake (31) is used to connect to the first drive axle (33) and the right rear wheel (34) respectively, and the third brake (31) is also used to provide braking force to the right rear wheel (34); A fourth brake (32) is used to connect to the first drive axle (33) and the left rear wheel (35) respectively, and the fourth brake (32) is also used to provide braking force to the left rear wheel (35).

4. The brake device according to claim 1, characterized by The braking device further includes: A controller is connected to the clutch (11) and is used to control the opening and closing of the clutch (11).

5. The brake device according to claim 4, characterized in that The braking device also includes a load sensor located at the bottom of the loading component, and the controller is also connected to the load sensor. The controller is also used to control the clutch (11) to close when the load is greater than a predetermined load.

6. The brake device according to claim 4, characterized by The braking device also includes a vehicle speed sensor located on any one of the wheels. The controller is connected to the vehicle speed sensor, the first brake (12), and the second brake. The controller is also used to control the second brake to provide braking force when the vehicle speed is greater than a first predetermined vehicle speed and the clutch (11) is closed, and to control the first brake (12) to provide braking force when the vehicle speed is reduced to a second predetermined vehicle speed and the clutch (11) is closed.

7. The braking device according to claim 4, characterized in that, The braking device also includes a vehicle speed sensor located on any one of the wheels. The controller is connected to the vehicle speed sensor, the first brake (12), and the second brake. The controller is also used to control the second brake to provide braking force when the clutch (11) is disengaged and the vehicle speed is less than a first predetermined vehicle speed.

8. The brake device according to claim 4, characterized by The braking device also includes a vehicle speed sensor located on any one of the wheels. The controller is connected to the vehicle speed sensor, the first brake (12), and the second brake, respectively. The controller is also used to control the first brake (12) and the second brake to provide braking force when the clutch (11) is closed and the vehicle speed is less than a third predetermined vehicle speed.

9. A vehicle characterized by comprising: The vehicle includes the braking device according to any one of claims 1 to 8.

10. The vehicle of claim 9, wherein, The braking device further includes a rear axle assembly (30), which includes a second brake, a first drive axle (33), and a rear wheel. The second brake is used to connect to the first drive axle (33) and the rear wheel respectively, and the second brake is also used to provide braking force to the rear wheel.

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