Automatic clutch control mechanism

Abstract

The utility model relates to the technical field of clutches, in particular to an automatic clutch control mechanism which comprises a chassis vehicle clutch hydraulic system, a proportional electromagnetic valve, a pressure transmitter, a clutch air cylinder and an installation bottom frame, the chassis vehicle clutch hydraulic system is provided with a main cylinder, and the main cylinder and the clutch air cylinder are both fixedly installed on the installation bottom frame. A piston rod of the main cylinder is connected with a piston rod of the clutch cylinder, the proportional electromagnetic valve is connected with the clutch cylinder through a cylinder pipeline, the pressure transmitter is installed on the cylinder pipeline, the proportional electromagnetic valve is provided with an air source inlet and a control port, the air source inlet is communicated with an air storage tank of a chassis braking system, and the control port is communicated with a target vehicle controller. The mechanism is simple in structure and convenient to operate, automatic control and unmanned driving of the target vehicle are achieved, an air source on the chassis vehicle serves as a power source, cost is reduced, and safety and reliability are achieved.

Description

Technical Field

[0001] This utility model relates to the field of clutch technology, and in particular to an automatic clutch control mechanism. Background Technology

[0002] Target vehicles developed using autonomous driving technology can replace manually driven target vehicles, effectively reducing personnel safety risks and minimizing errors and impacts from human error, environmental factors, and other external factors. Fully utilizing the high mobility, adaptability, intelligence, and scalability of autonomous target vehicles can support the entire system in improving operational flexibility and expanding training space. Besides technical requirements, cost is also a crucial indicator of target vehicle usability. Converting old manual vehicles into autonomous vehicles is an important way to reduce costs, and modifying the clutch pedal mechanism into an automatic clutch control mechanism is a key aspect of this modification.

[0003] The clutch pedal mechanism mainly consists of the clutch pedal and the master cylinder. The clutch pedal is the component directly operated by the driver to regulate the engagement and disengagement of the clutch. The master cylinder, as a hydraulic device, converts the force applied by the driver to the clutch pedal into hydraulic energy, which is then transmitted to the pressure plate through the clutch lever, thereby precisely controlling the engagement and disengagement of the clutch.

[0004] The main purpose of modifying the clutch pedal mechanism into an automatic clutch control mechanism is to change the driver's pedal operation to automatic remote control, achieving unmanned operation. Existing automatic clutch control mechanisms mainly use servo motors or servo control technology of ordinary motors. The technology is mature and reliable, but it is expensive and requires additional power. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an automatic clutch control mechanism with simple structure and convenient operation. It can realize automatic control and unmanned driving of target vehicles, and can use the air source on the chassis as a power source, which reduces costs and is safe and reliable.

[0006] This utility model is achieved through the following technical solution:

[0007] An automatic clutch control mechanism includes a chassis vehicle clutch hydraulic system, a proportional solenoid valve, a pressure transmitter, a clutch cylinder, and a mounting base. The chassis vehicle clutch hydraulic system has a master cylinder. Both the master cylinder and the clutch cylinder are fixedly mounted on the mounting base, and the piston rod of the master cylinder is connected to the piston rod of the clutch cylinder. The proportional solenoid valve is connected to the clutch cylinder through a cylinder pipeline. The pressure transmitter is installed on the cylinder pipeline. The proportional solenoid valve has an air source inlet and a control port. The air source inlet is connected to the air tank of the chassis vehicle braking system, and the control port is connected to the target vehicle controller.

[0008] In the optimized configuration, the end of the master cylinder piston rod is connected to the end of the clutch cylinder piston rod via a connecting nut and then locked in place with a locking nut.

[0009] Specifically, both the end of the master cylinder piston rod and the end of the clutch cylinder piston rod are provided with external threads, and the external threads on the master cylinder piston rod and the external threads on the clutch cylinder piston rod have opposite directions of rotation. Locking nuts are fitted on both the master cylinder piston rod and the clutch cylinder piston rod. The connecting nut is located between the two locking nuts, and both ends of the connecting nut are provided with internal threads that match the external threads on the master cylinder piston rod and the external threads on the clutch cylinder piston rod, respectively.

[0010] The cylinder pipeline is equipped with a pipe joint, and a pressure transmitter seat is installed between the pipe joints. The pressure transmitter is installed on the pressure transmitter seat.

[0011] Furthermore, a muffler is installed at the outlet of the clutch cylinder.

[0012] The optimized chassis clutch hydraulic system also includes a working cylinder, a reservoir, a release fork, and a release bearing. The master cylinder is connected to the reservoir and the working cylinder respectively through hydraulic lines. One end of the release fork is connected to the piston rod of the working cylinder, and the other end is slidably mounted on the clutch shaft. The release bearing is slidably mounted on the clutch shaft and fits against the release fork.

[0013] The optimized mounting base has elongated mounting holes, and the master cylinder and clutch cylinder are fixedly connected to the mounting base with bolts at the corresponding elongated mounting holes.

[0014] Beneficial effects of the utility model:

[0015] The automatic clutch control mechanism provided by this utility model has the following advantages:

[0016] 1. The structure is simple, easy to process, manufacture and install. It makes full use of the air source already on the chassis and uses old vehicles for modification, realizing automatic control and unmanned driving of the target vehicle, and reducing the modification cost of the automatic clutch control mechanism.

[0017] 2. The proportional solenoid valve is installed together with the clutch cylinder, and the master cylinder piston rod is connected to the clutch cylinder piston rod. The layout is compact and improves the response speed of the clutch control mechanism.

[0018] 3. Improved the reliability and safety of the clutch control mechanism. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the hydraulic clutch system of the chassis vehicle.

[0021] In the diagram: 1. Proportional solenoid valve; 2. Pressure transmitter; 3. Pressure transmitter seat; 4. Pipe fitting; 5. Cylinder pipeline; 6. Muffler; 7. Clutch cylinder; 8. Mounting base; 9. Connecting nut; 10. Locking nut; 11. Chassis clutch hydraulic system; 1101. Master cylinder; 1102. Working cylinder; 1103. Hydraulic pipeline; 1104. Reservoir; 1105. Release fork; 1106. Release bearing; 1107. Clutch shaft; 12. Air tank. Detailed Implementation

[0022] An automatic clutch control mechanism, the structural schematic diagram of which is shown below. Figure 1 As shown, it includes a chassis vehicle clutch hydraulic system 11, a proportional solenoid valve 1, a pressure transmitter 2, a clutch cylinder 7, and a mounting base 8. The chassis vehicle clutch hydraulic system is equipped with a master cylinder 1101. Both the master cylinder and the clutch cylinder are fixedly mounted on the mounting base, and the piston rod of the master cylinder is connected to the piston rod of the clutch cylinder. The proportional solenoid valve and the clutch cylinder are connected through a cylinder pipeline 5. The pressure transmitter is installed on the cylinder pipeline. The proportional solenoid valve is equipped with an air source inlet and a control port. The air source inlet is connected to the air tank 12 of the chassis vehicle braking system, and the control port is connected to the target vehicle controller.

[0023] This invention modifies a manually driven target vehicle by setting up a clutch cylinder and a proportional solenoid valve. The proportional solenoid valve is connected to the clutch cylinder through a cylinder pipeline. The proportional solenoid valve has an air source inlet and a control port. The air source inlet is connected to the air tank of the chassis vehicle's braking system, and the control port is connected to the target vehicle controller. The piston rod of the master cylinder of the chassis vehicle's clutch hydraulic system is connected to the piston rod of the clutch cylinder. This modification enables automatic control and unmanned driving of the target vehicle. The air source inlet is connected to the air tank of the chassis vehicle's braking system, making full use of the existing air source on the chassis vehicle and reducing the modification cost of the automatic clutch control mechanism.

[0024] Furthermore, by integrating the proportional solenoid valve with the clutch cylinder and connecting the master cylinder piston rod with the clutch cylinder piston rod, the structure is simple, the layout is compact, and it is easy to process, manufacture, and install, thereby improving the response speed of the clutch control mechanism.

[0025] Simultaneously, a pressure transmitter is installed to convert the measured pressure into a standard electrical signal output. This electrical signal can be read and processed by controllers such as PLC and DCS, thereby realizing real-time monitoring and control of the measured pressure and further improving the safety of the mechanism.

[0026] Because the automatic clutch control mechanism provided by this utility model includes a clutch cylinder, a proportional solenoid valve, and a pressure transmitter, all of which are common pneumatic components, it is easy to procure and shortens the installation and modification cycle.

[0027] The optimized design connects the end of the master cylinder piston rod to the end of the clutch cylinder piston rod via a connecting nut 9 and a locking nut 10, ensuring a stable and reliable connection between the master cylinder piston rod and the clutch cylinder piston rod, thus improving the reliability and safety of the clutch operating mechanism.

[0028] Specifically, both the end of the master cylinder piston rod and the end of the clutch cylinder piston rod are provided with external threads, and the external threads on the master cylinder piston rod and the external threads on the clutch cylinder piston rod have opposite directions of rotation. Locking nuts are fitted on both the master cylinder piston rod and the clutch cylinder piston rod. The connecting nut is located between the two locking nuts, and both ends of the connecting nut are provided with internal threads that match the external threads on the master cylinder piston rod and the external threads on the clutch cylinder piston rod, respectively.

[0029] When the master cylinder piston rod and clutch cylinder piston rod need to be connected, the master cylinder, clutch cylinder and mounting base are in a loose state. Hold the connecting nut and rotate it. Since the external thread on the master cylinder piston rod and the external thread on the clutch cylinder piston rod rotate in opposite directions, the connecting nut is located between the two locking nuts. The two ends of the connecting nut are respectively provided with internal threads that match the external threads on the master cylinder piston rod and the clutch cylinder piston rod. The master cylinder piston rod and the clutch cylinder piston rod will move closer to each other and reach the appropriate position. Then tighten the two locking nuts. Finally, fix the master cylinder, clutch cylinder and mounting base respectively.

[0030] When the master cylinder piston rod and clutch cylinder piston rod need to be disassembled, first loosen the master cylinder and clutch cylinder from the mounting base, then hold the connecting nut and rotate it in the opposite direction. The master cylinder piston rod and clutch cylinder piston rod will move away from each other at the same time, thus achieving rapid separation of the master cylinder piston rod and clutch cylinder piston rod. The operation is convenient and quick.

[0031] Furthermore, a pipe joint 4 is provided on the cylinder pipeline, and a pressure transmitter seat 3 is installed between the pipe joints. The pressure transmitter is installed on the pressure transmitter seat, making the installation of the pressure transmitter more stable and reliable.

[0032] Furthermore, a muffler 6 is installed at the outlet of the clutch cylinder to reduce the operating noise of the automatic clutch control mechanism.

[0033] The optimized schematic diagram of the chassis vehicle's clutch hydraulic system is as follows: Figure 2 As shown, the chassis vehicle clutch hydraulic system also includes a working cylinder 1102, a reservoir 1104, a release fork 1105, and a release bearing 1106. The master cylinder is connected to the reservoir and the working cylinder respectively through a hydraulic pipeline 1103. One end of the release fork is connected to the piston rod of the working cylinder, and the other end is slidably mounted on the clutch shaft 1107. The release bearing is slidably mounted on the clutch shaft and is in contact with the release fork.

[0034] The automatic clutch control mechanism provided by this utility model is used as follows: According to the vehicle's driving conditions, the target vehicle controller sends a command to the proportional solenoid valve. The current of the proportional solenoid valve changes proportionally, causing the gas pressure flowing through the proportional solenoid valve in the air tank of the chassis vehicle's braking system to increase proportionally. The pressure of the clutch cylinder piston rod pushing the master cylinder piston rod also increases. The master cylinder piston compresses the oil to generate high-pressure oil. The high-pressure oil pushes the working cylinder piston through the hydraulic pipeline, ultimately driving the release fork to move, thereby pushing the release bearing to achieve clutch disengagement. Upon receiving the command, the proportional solenoid valve closes the air circuit, the clutch cylinder piston rod no longer pushes the master cylinder, all components reset, and the oil flows back to the reservoir, ultimately achieving clutch engagement.

[0035] The optimized mounting base has elongated mounting holes, and the main cylinder and clutch cylinder are fixedly connected to the mounting base with bolts at the corresponding elongated mounting holes, which facilitates the fixed installation of the main cylinder, clutch cylinder and mounting base, as well as the quick disassembly and assembly of the main cylinder piston rod and the clutch cylinder piston rod.

[0036] In summary, the automatic clutch control mechanism proposed in this utility model has a simple structure and is easy to operate, realizing automatic control and unmanned driving of the target vehicle. Furthermore, by utilizing the air source on the chassis as a power source, it reduces costs and ensures safety and reliability.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic clutch control mechanism, characterized in that, The system includes a chassis vehicle clutch hydraulic system, a proportional solenoid valve, a pressure transmitter, a clutch cylinder, and a mounting base. The chassis vehicle clutch hydraulic system has a master cylinder, and both the master cylinder and the clutch cylinder are fixedly mounted on the mounting base. The piston rod of the master cylinder is connected to the piston rod of the clutch cylinder. The proportional solenoid valve is connected to the clutch cylinder through a cylinder pipeline. The pressure transmitter is installed on the cylinder pipeline. The proportional solenoid valve has an air source inlet and a control port. The air source inlet is connected to the air tank of the chassis vehicle braking system, and the control port is connected to the target vehicle controller.

2. The automatic clutch control mechanism according to claim 1, characterized in that, The end of the master cylinder piston rod is connected to the end of the clutch cylinder piston rod by a connecting nut and locked by a locking nut.

3. An automatic clutch control mechanism according to claim 2, characterized in that, Both the end of the master cylinder piston rod and the end of the clutch cylinder piston rod are provided with external threads, and the external threads on the master cylinder piston rod and the clutch cylinder piston rod have opposite directions of rotation. Locking nuts are fitted on both the master cylinder piston rod and the clutch cylinder piston rod. The connecting nut is located between the two locking nuts, and both ends of the connecting nut are provided with internal threads that match the external threads on the master cylinder piston rod and the clutch cylinder piston rod, respectively.

4. An automatic clutch control mechanism according to claim 1, characterized in that, The cylinder pipeline is equipped with a pipe joint, and a pressure transmitter seat is installed between the pipe joints. The pressure transmitter is installed on the pressure transmitter seat.

5. An automatic clutch control mechanism according to claim 1, characterized in that, The clutch cylinder is equipped with a muffler at the outlet.

6. An automatic clutch control mechanism according to claim 1, characterized in that, The chassis clutch hydraulic system also includes a working cylinder, a reservoir, a release fork, and a release bearing. The master cylinder is connected to the reservoir and the working cylinder through hydraulic lines. One end of the release fork is connected to the piston rod of the working cylinder, and the other end is slidably mounted on the clutch shaft. The release bearing is slidably mounted on the clutch shaft and is in contact with the release fork.

7. An automatic clutch control mechanism according to claim 1, characterized in that, The mounting base is provided with mounting elongated holes, and the master cylinder and clutch cylinder are fixedly connected to the mounting base at the corresponding mounting elongated holes by bolts.

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