Zero-speed braking device of trackless rubber-tyred vehicle

Abstract

The utility model discloses a zero-speed braking device of a trackless rubber-tyred vehicle, and particularly relates to the technical field of zero-speed braking, the zero-speed braking device comprises a brake and a transmission shaft, the brake is provided with a parking braking hydraulic pipe, and the middle part of the parking braking hydraulic pipe is connected with an anti-explosion electromagnetic valve through a connecting mechanism; a mounting bracket is fixedly mounted on the box body on one side of the transmission shaft, and a rotating speed sensor is fixedly connected to the mounting bracket. Firstly, the rotating speed of the transmission shaft is monitored in real time through the rotating speed sensor, so that the moving state of the vehicle is judged, when the moving speed of the vehicle is zero, the anti-explosion electromagnetic valve can be controlled to disconnect the parking brake hydraulic pipe through system delay judgment, and braking is carried out according to the characteristic that parking brake of the vehicle is failure protection; the automatic parking function is achieved when the speed of the vehicle is zero, and the situation that due to negligence of a driver, the vehicle slides or slides, the vehicle displaces abnormally, and consequently safety accidents occur is avoided.

Description

Technical Field

[0001] This utility model relates to the field of zero-speed braking technology, and more specifically, to a zero-speed braking device for trackless rubber-wheeled vehicles. Background Technology

[0002] With the accelerating pace of automation in the coal mining industry, the use of auxiliary transportation equipment such as trackless rubber-tired vehicles in the industry is also increasing significantly. Trackless rubber-tired vehicles are widely used in industrial sites such as mines and coal mines for personnel transportation and material handling. The frequency of trackless rubber-tired vehicles operating underground in coal mines is increasing day by day, and the requirements for safe driving are also increasing. The vehicle's overall braking function has only two types: service brake (foot brake) and parking brake (handbrake). When the driver presses the brake pedal during driving until the vehicle speed drops to zero, the driver needs to manually pull up the handbrake to brake.

[0003] Traditional braking systems may cause vehicles to skid or roll when stopped at near-zero speed on uneven roads, if the driver forgets to engage the handbrake. This can lead to abnormal vehicle displacement, posing a threat to the safety of the vehicle and its occupants and potentially causing an accident. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a zero-speed braking device for trackless rubber-tired vehicles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a zero-speed braking device for a trackless rubber-wheeled vehicle, comprising a brake and a drive shaft. The brake is provided with a hydraulic pipe, and an explosion-proof solenoid valve is connected to the middle of the hydraulic pipe through a connecting mechanism. A mounting bracket is fixedly installed on one side of the drive shaft housing, and a speed sensor is fixedly connected to the mounting bracket. The detection head of the speed sensor corresponds to the drive shaft.

[0006] Preferably, the hydraulic pipe is used to transmit the hydraulic pressure generated by the master cylinder to the brake calipers of each wheel. The brake calipers are used to receive the hydraulic pressure from the master cylinder and convert it into mechanical force to push the brake shoes or brake pads into contact with the wheel, thereby generating braking force.

[0007] Preferably, the drive shaft is used to connect to the wheel axle, and the speed sensor is used to detect whether the drive shaft is rotating.

[0008] Preferably, the speed sensor is connected to the vehicle control system, and the explosion-proof solenoid valve is connected to the vehicle controller of the vehicle control system.

[0009] Preferably, the connecting mechanism includes hexagonal threaded rings disposed on both sides of the explosion-proof solenoid valve, and one end of the hydraulic pipe is rotatably connected to a connecting threaded ring.

[0010] Preferably, a stabilizing ring is fixedly connected to one side of the hexagonal helical ring, the cross-sectional shape of the stabilizing ring is set to "L" shape, and one end of the stabilizing ring is inserted into the interior of the explosion-proof solenoid valve.

[0011] Preferably, the inner cavity of the hexagonal spiral ring is provided with threads, and one end of the connecting spiral ring is fixedly connected to a threaded tube. The threaded tube is adapted to the inner cavity of the hexagonal spiral ring, and the threaded tube is located in the middle of the hexagonal spiral ring and is threadedly connected to the inner cavity of the hexagonal spiral ring.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model first monitors the rotational speed of the drive shaft in real time through a speed sensor to determine the vehicle's movement status. When the vehicle's movement speed is zero, the system can control the explosion-proof solenoid valve to disconnect the hydraulic pipe through a system delay judgment. The system can then use the vehicle's parking brake as a fail-safe feature to brake, thereby achieving the automatic parking function when the vehicle speed is zero. This prevents the vehicle from sliding or rolling due to the driver's negligence, which could cause abnormal displacement of the vehicle and thus lead to a safety accident.

[0014] 2. This utility model also features a hexagonal screw ring that is rotatably connected to the explosion-proof solenoid valve via a stabilizing ring, and a connecting screw ring that is rotatably connected to the hydraulic pipe. When inserting the threaded pipe into the hexagonal screw ring and tightening the threads, only the hexagonal screw ring and the connecting screw ring need to be rotated, which is convenient for installation and connection, and will not affect the installation stability of the explosion-proof solenoid valve, thus improving the performance.

[0015] In summary, through the interaction of the above-mentioned multiple functions, the explosion-proof solenoid valve can be controlled to disconnect the hydraulic pipe, and the vehicle parking brake can be used for braking by utilizing its fail-safe feature, thereby realizing the automatic parking function when the vehicle speed is zero and avoiding vehicle safety accidents caused by driver negligence. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0018] Figure 3 This utility model Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0019] Figure 4 This is a schematic diagram of the connection structure between the explosion-proof solenoid valve and the hydraulic pipe of this utility model.

[0020] The attached diagram is labeled as follows: 1. Brake; 2. Hydraulic pipe; 3. Explosion-proof solenoid valve; 4. Drive shaft; 5. Mounting bracket; 6. Speed ​​sensor; 7. Stabilizing ring; 8. Hexagonal threaded ring; 9. Connecting threaded ring; 10. Threaded pipe. 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] As attached Figure 1-4 The zero-speed braking device of the trackless rubber-tired vehicle shown includes a brake 1 and a drive shaft 4. The brake 1 is equipped with a hydraulic pipe 2, and the middle of the hydraulic pipe 2 is connected to an explosion-proof solenoid valve 3 through a connecting mechanism. The explosion-proof solenoid valve 3 can disconnect the hydraulic pipe 2, and braking is performed by utilizing the failure protection feature of the vehicle parking brake, realizing the automatic parking function when the vehicle speed is zero, avoiding possible safety accidents caused by driver negligence. A mounting bracket 5 is fixedly installed on one side of the housing of the drive shaft 4. A speed sensor 6 is fixedly connected to the mounting bracket 5. The detection head of the speed sensor 6 corresponds to the drive shaft 4. The speed sensor 6 monitors whether the drive shaft 4 is rotating in real time. When the drive shaft 4 is not rotating, it means that the vehicle's moving speed is zero, which facilitates real-time reading of the vehicle's moving status. The mounting bracket 5 facilitates the support and fixation of the speed sensor 6, improving the detection effect of the speed sensor 6 on the drive shaft 4.

[0023] As attached Figure 1 As shown, hydraulic pipe 2 is used to transmit the hydraulic pressure generated by the master cylinder to the brake calipers of each wheel. The brake calipers receive the hydraulic pressure from the master cylinder and convert it into mechanical force to push the brake shoes or brake pads into contact with the wheel, generating braking force. The output pressure of the brake calipers of the wheel can be controlled through hydraulic pipe 2, so that the brake shoes or brake pads can contact the wheel to generate braking force to brake the wheel.

[0024] As attached Figure 1 , 3 As shown, the drive shaft 4 is used to connect to the wheel axle, and the speed sensor 6 is used to detect whether the drive shaft 4 is rotating. The drive shaft 4 can be rotated by the wheel while the drive shaft 4 is rotating, and the speed sensor 6 can detect the speed of the wheel in real time, so as to realize the real-time reading of the vehicle's movement status and facilitate detection.

[0025] As attached Figure 1As shown, the speed sensor 6 is connected to the vehicle control system, and the explosion-proof solenoid valve 3 is connected to the vehicle controller of the vehicle control system. The speed sensor 6 monitors the vehicle's movement status in real time. When the vehicle's movement speed is zero, the system can determine the time delay and control the explosion-proof solenoid valve 3 to disconnect the hydraulic pipe 2. The system can then use the vehicle's parking brake as a fail-safe feature to brake, thus achieving the automatic parking function when the vehicle speed is zero and avoiding potential safety accidents caused by the driver's negligence.

[0026] As attached Figure 2 , 4 As shown, the connecting mechanism includes hexagonal screw rings 8 on both sides of the explosion-proof solenoid valve 3, and a connecting screw ring 9 is rotatably connected to one end of the hydraulic pipe 2.

[0027] As attached Figure 4 As shown, a stabilizing ring 7 is fixedly connected to one side of the hexagonal screw ring 8. The cross-sectional shape of the stabilizing ring 7 is set to "L" shape, and one end of the stabilizing ring 7 is inserted into the interior of the explosion-proof solenoid valve 3.

[0028] As attached Figure 4 As shown, the inner cavity of the hexagonal screw ring 8 is threaded, and one end of the connecting screw ring 9 is fixedly connected to a threaded tube 10. The threaded tube 10 is adapted to the inner cavity of the hexagonal screw ring 8. The threaded tube 10 is located in the middle of the hexagonal screw ring 8 and is threadedly connected to the inner cavity of the hexagonal screw ring 8. The threaded connection between the threaded tube 10 and the inner cavity of the hexagonal screw ring 8 facilitates the connection between the connecting screw ring 9 and the hexagonal screw ring 8, which is convenient for the installation and use of the explosion-proof solenoid valve 3. The hexagonal screw ring 8 is rotatably connected to the explosion-proof solenoid valve 3 through the stabilizing ring 7, which allows for easy rotation of the hexagonal screw ring 8. The hydraulic tube 2 is rotatably connected to the connecting screw ring 9, which also facilitates the rotation of the connecting screw ring 9 to connect with the hexagonal screw ring 8. This facilitates connection and use, and prevents the explosion-proof solenoid valve 3 from rotating when connecting and installing it, thus improving the connection effect.

[0029] The working principle of this utility model is as follows: When in use, the threaded tube 10 is connected to the hexagonal screw ring 8, and the hexagonal screw ring 8 and the connecting screw ring 9 are rotated at the same time to connect the inner cavity of the threaded tube 10 to the hexagonal screw ring 8. The explosion-proof solenoid valve 3 is installed in the middle of the hydraulic tube 2.

[0030] The speed sensor 6 is mounted on one side of the drive shaft 4 using the mounting bracket 5. The speed sensor 6 detects the speed of the drive shaft 4, thereby detecting the vehicle's movement status in real time.

[0031] When the speed sensor 6 detects that the speed of the drive shaft 4 is zero, it indicates that the vehicle's movement speed is zero. After a delay judgment by the vehicle control system, the explosion-proof solenoid valve 3 is controlled to disconnect the liquid flow in the middle of the hydraulic pipe 2. The vehicle's parking brake is used for failure protection to brake, thereby realizing the automatic parking function when the vehicle speed is zero, and avoiding possible safety accidents caused by the driver's negligence.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A zero-speed braking device for a trackless rubber-tired vehicle, comprising a brake (1) and a drive shaft (4), characterized in that: The brake (1) is provided with a hydraulic pipe (2), and the middle part of the hydraulic pipe (2) is connected to an explosion-proof solenoid valve (3) through a connecting mechanism. A mounting bracket (5) is installed and fixed on one side of the housing of the drive shaft (4), and a speed sensor (6) is fixedly connected on the mounting bracket (5). The detection head of the speed sensor (6) corresponds to the drive shaft (4).

2. The zero-speed braking device for the trackless rubber-tired vehicle according to claim 1, characterized in that: The hydraulic pipe (2) is used to transmit the hydraulic pressure generated by the master cylinder to the brake slave cylinders of each wheel. The brake slave cylinders are used to receive the hydraulic pressure from the master cylinder and convert it into mechanical force to push the brake shoes or brake pads to contact the wheel and generate braking force.

3. The zero-speed braking device for the trackless rubber-tired vehicle according to claim 1, characterized in that: The drive shaft (4) is used to connect to the wheel axle, and the speed sensor (6) is used to detect whether the drive shaft (4) is rotating.

4. The zero-speed braking device for the trackless rubber-tired vehicle according to claim 1, characterized in that: The speed sensor (6) is connected to the vehicle control system, and the explosion-proof solenoid valve (3) is connected to the vehicle controller of the vehicle control system.

5. The zero-speed braking device for the trackless rubber-tired vehicle according to claim 1, characterized in that: The connecting mechanism includes hexagonal screw rings (8) on both sides of the explosion-proof solenoid valve (3), and a connecting screw ring (9) is rotatably connected to one end of the hydraulic pipe (2).

6. The zero-speed braking device for a trackless rubber-tired vehicle according to claim 5, characterized in that: A stabilizing ring (7) is fixedly connected to one side of the hexagonal helical ring (8). The cross-sectional shape of the stabilizing ring (7) is set to "L". One end of the stabilizing ring (7) is inserted into the interior of the explosion-proof solenoid valve (3).

7. The zero-speed braking device for a trackless rubber-tired vehicle according to claim 6, characterized in that: The inner cavity of the hexagonal helical ring (8) is provided with threads, and one end of the connecting helical ring (9) is fixedly connected to a threaded tube (10). The threaded tube (10) is adapted to the inner cavity of the hexagonal helical ring (8). The threaded tube (10) is located in the middle of the hexagonal helical ring (8) and is threadedly connected to the inner cavity of the hexagonal helical ring (8).

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