A mine-used explosion-proof trackless rubber-tyred vehicle parking device

Abstract

This utility model discloses a parking device for a mine explosion-proof trackless rubber-tired vehicle, including a parking mechanism, a human body induction parking module, an intelligent overspeed braking module, a collision emergency braking module, and a central control module. The parking mechanism achieves stable parking through specially designed gears, limiters, and drivers; the human body induction parking module employs a redundant design for automatic engine shutdown parking; the intelligent overspeed braking module achieves precise overspeed monitoring and braking; and the collision emergency braking module can quickly respond to collisions. This device can effectively improve vehicle parking safety, achieve intelligent sensing and automatic control, and is suitable for high-risk working environments in underground coal mines.

Description

Technical Field

[0001] This utility model belongs to the technical field of safety equipment for mining vehicles, specifically relating to a parking device for a mine explosion-proof trackless rubber-tired vehicle. Background Technology

[0002] In the complex and high-risk working environment of underground coal mines, the parking safety performance of explosion-proof trackless rubber-tired vehicles is crucial to ensuring the safety of personnel and equipment, as they serve as the main transportation tool. However, traditional parking devices for explosion-proof trackless rubber-tired vehicles have many technical defects.

[0003] Existing parking systems largely rely on manual operation by the driver. In high-intensity working environments, drivers are prone to operational oversights or forgetting to perform parking maneuvers, causing the vehicle to slide unexpectedly and potentially leading to collisions, rollovers, and other serious accidents. While some vehicles are equipped with simple parking brake structures, they lack intelligent automatic control mechanisms, failing to respond promptly after the driver leaves their seat and ensure the vehicle is in a safe parking state. In emergencies such as speeding or collisions, existing braking systems often respond slowly, and their braking effect is insufficient to meet the safety requirements of complex underground conditions. Furthermore, in actual working environments, vehicles are easily subject to vibrations or bumps that can cause gear and rack separation or misalignment, resulting in unstable locking or unlocking states of the parking mechanism and potentially leading to safety accidents. Therefore, the development of a parking device for explosion-proof trackless rubber-tired mining vehicles with intelligent sensing, automatic control, stable braking, and intelligent linkage functions is urgently needed. Utility Model Content

[0004] To address the problems and shortcomings of the existing technology, this utility model provides a parking device for mine explosion-proof trackless rubber-tired vehicles, which effectively improves vehicle parking safety, realizes intelligent sensing and automatic control, and is suitable for high-risk working environments in coal mines.

[0005] This utility model is achieved through the following technical solution: A parking device for a mine explosion-proof trackless rubber-tired vehicle includes: The parking mechanism includes a housing, a parking gear mounted to the vehicle drive shaft, a parking limiter that cooperates with the parking gear, a parking drive, and a parking motor. The parking gear has up to 8 tooth grooves evenly distributed on its outer side, and the depth of the tooth grooves is greater than ¼ of the radius of the parking gear. The human body sensing parking module includes a pressure sensor group and an infrared human body sensor group installed on the driver's seat. The pressure sensor group consists of multiple pressure sensor arrays distributed to monitor changes in the pressure distribution of the driver's seat in real time, and the infrared human body sensor group is used to detect the presence of a human body in the driver's seat area. The intelligent overspeed braking module includes a GPS positioning and speed measurement unit, an alarm unit, and an electromagnetic braking execution unit. The collision emergency braking module includes collision sensor arrays distributed at the front, rear, and sides of the vehicle body. The collision sensor arrays are composed of a combination of acceleration sensors and pressure sensors. The central control module is connected to the parking motor, the human body sensing parking module, the intelligent overspeed braking module, and the collision emergency braking module to receive and analyze data from each module, and control the parking motor to perform actions according to preset rules.

[0006] A complete intelligent parking safety system is formed by setting up a specially structured parking mechanism, a human body sensing parking module, an intelligent overspeed braking module, a collision emergency braking module, and a central control module. The design of the parking mechanism improves parking stability, and the coordinated work of each module realizes intelligent perception and automatic control. Compared with traditional parking devices, it comprehensively improves the safety and reliability of the mine explosion-proof trackless rubber-tired vehicle under various working conditions.

[0007] Furthermore, the parking limiter includes a parking pawl, a fixed shaft, and a return spring installed between the parking pawl and the fixed shaft. The parking pawl can rotate relative to the fixed shaft and has a parking protrusion that engages with a toothed groove. The parking pawl has a parking state and a non-parking state. When the parking pawl is in the parking state, the parking protrusion engages with the toothed groove; when the parking pawl is in the non-parking state, the parking protrusion is separated from the toothed groove. The parking limiter, with its structure of a parking pawl, fixed shaft, and return spring, allows the parking pawl to flexibly switch between the parking state and the non-parking state. Furthermore, the engagement of the parking protrusion with the toothed groove further enhances parking stability and effectively prevents the vehicle from slipping due to vibration or other reasons while parked.

[0008] Furthermore, the parking actuator includes two fixed blocks fixed to the inner wall of the housing, a parking push rod slidably installed between the two fixed blocks, and a drive shaft connecting the parking motor and the parking push rod. The parking push rod has a toothed groove on the side near the drive shaft, and the drive shaft has a drive gear that mates with the toothed groove on the side near the parking push rod. The design of the fixed blocks, parking push rod, and drive shaft in the parking actuator, through the transmission between the drive gear and the toothed groove, achieves stable driving of the parking push rod by the parking motor, ensuring reliable execution of the parking action and improving the working efficiency and stability of the parking mechanism.

[0009] Furthermore, a push slider is fitted onto the outer side of one end of the parking push rod, and a retaining ring is fixed to the outer side of the other end. A compression spring is provided between the push slider and the retaining ring, connecting to the outer side of the parking push rod. The push slider has a thrust ramp that engages with the parking pawl. The parking push rod compresses the push slider through the compression spring, causing the push slider to move along the extension direction of the parking push rod. The thrust ramp compresses the parking pawl until the parking protrusion engages with the tooth groove. The design of the push slider, compression spring, and other structures allows the parking push rod to compress the push slider through the compression spring and use the thrust ramp to compress the parking pawl, thus achieving the action of the parking protrusion engaging with the tooth groove. This structural design makes the parking process smoother and more reliable, and to a certain extent, it can adapt to vehicle vibrations and maintain the stability of the parking state.

[0010] Furthermore, a T-shaped groove is provided on the side of the fixed block near the push slider, and a T-shaped protrusion protrudes from the side of the push slider near the fixed block, which mates with the T-shaped groove. The cooperation of the T-shaped groove and the T-shaped protrusion restricts the movement direction of the push slider, preventing it from deviating or wobbling during movement, thereby further improving the stability and reliability of the parking mechanism, ensuring the precise execution of the parking action, and indirectly limiting the parking push rod.

[0011] Furthermore, the pressure sensor group and the infrared human body sensor group adopt a redundant design. When the pressure in the driver's seat is detected to be lower than the preset value and the infrared human body sensor group does not detect a human body, the central control module controls the cutting off of the vehicle's fuel and electrical circuits within 2 seconds, causing the engine to shut down and the parking motor to start. The redundant design of the human body sensing parking module improves the accuracy and reliability of detecting the driver's off-seat status, and can trigger automatic engine shutdown and parking operations in a timely and accurate manner, effectively avoiding vehicle rollover accidents caused by driver negligence and ensuring the safety of underground operations.

[0012] Furthermore, the GPS positioning and speed measurement unit compares real-time vehicle speed data with a preset overspeed threshold. When the vehicle speed exceeds the preset overspeed threshold, the alarm unit issues an audible and visual alarm. If the vehicle speed does not decrease below the threshold within 3 seconds, the central control module controls the electromagnetic braking actuator to activate. The electromagnetic braking actuator uses electromagnetic force to brake the vehicle's drive shaft, and the braking torque can be automatically adjusted according to the difference between the vehicle speed and the threshold. The intelligent overspeed braking module achieves precise monitoring of vehicle speed and intelligent braking control. Through graded warnings and automatic adjustment of braking torque, it can provide appropriate braking measures under different overspeed conditions. Compared with traditional simple overspeed alarms, it greatly improves the safety and controllability of the vehicle under overspeed conditions.

[0013] Furthermore, the alarm unit includes audible and visual alarm components of different frequencies and colors. By employing audible and visual alarm components of different frequencies and colors, the alarm unit can intuitively distinguish different types of alarm information, enabling the driver to quickly identify the vehicle's current dangerous state and take timely appropriate measures, thus improving the driver's response speed and accuracy to the vehicle's status.

[0014] The beneficial effects of this utility model are: In summary, this utility model's parking device for explosion-proof trackless rubber-tired vehicles in mines solves the problems of low parking safety, lack of intelligent control, and stable braking in existing technologies through innovative design and coordinated operation of its various modules. It achieves functions such as automatic parking, precise overspeed braking, and rapid collision response, effectively improving the safety performance of explosion-proof trackless rubber-tired vehicles in the complex environment of underground coal mines, reducing the probability of accidents. Furthermore, its intelligent linkage and data processing capabilities meet the development needs of intelligent coal mining. Attached Figure Description

[0015] Figure 1 A connection diagram illustrating an illustrative embodiment of a parking device for a mine explosion-proof trackless rubber-tired vehicle according to this utility model; Figure 2 This is a schematic diagram illustrating one embodiment of a parking device for a mine explosion-proof trackless rubber-tired vehicle according to the present invention. Figure 3 This is a structural block diagram illustrating a schematic embodiment of a parking device for a mine explosion-proof trackless rubber-tired vehicle according to the present invention.

[0016] List of components and reference numerals: 1. Car housing; 2. Vehicle drive shaft; 3. Parking gear; 31. Gear groove; 4. Parking limiter; 41. Parking pawl; 411. Parking protrusion; 42. Fixed shaft; 43. Return spring; 5. Parking actuator; 51. Fixed block; 511. T-shaped slide; 52. Parking push rod; 521. Strip toothed groove; 53. Drive shaft; 531. Drive gear; 54. Push slider; 541. T-shaped protrusion; 55. Fixed ring; 56. Compression spring; 6. Parking motor. Detailed Implementation

[0017] 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.

[0018] It should be noted that the directional terms such as left, right, up, down, front, and back in the embodiments of this utility model are only relative concepts or are based on the normal use state of the product, i.e., the direction of the product's movement, and should not be considered as limiting.

[0019] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of this utility model not only refer to changes in position, but also include movements such as rotation and rolling in which the position does not change relative to the position, but the state changes.

[0020] Finally, it should be noted that when a component is said to be "located on" or "set on" another component, it can be on the other component or may have an intervening component at the same time. When a component is said to be "connected to" another component, it can be directly connected to the other component or may have an intervening component at the same time.

[0021] like Figures 1 to 3 The parking device for a mine explosion-proof trackless rubber-tired vehicle shown includes a parking mechanism, a human body sensing parking module, an intelligent overspeed braking module, a collision emergency braking module, and a central control module.

[0022] Parking Mechanism: The parking mechanism is the core component for reliable parking of the entire device. Its working principle is based on mechanical transmission and precision fit. When the central control module issues a parking command, the parking motor 6 starts to run, and the motor's power is transmitted to the parking drive 5 through the drive shaft 53. The drive shaft 53 has a drive gear 531 on the side near the parking push rod 52, which meshes with the slotted tooth 521 of the parking push rod 52. Driven by the motor, the drive gear 531 rotates and meshes with the slotted tooth 521, thereby pushing the parking push rod 52 to slide relative to the two fixed blocks 51.

[0023] A push slider 54 is fitted onto the outer side of one end of the parking push lever 52, and a retaining ring 55 is fixed to the outer side of the other end. A compression spring 56 is provided between the push slider 54 and the retaining ring 55, which is sleeved onto the outer side of the parking push lever 52. During the sliding of the parking push lever 52, the compression spring 56 is compressed, accumulating elastic potential energy and acting on the push slider 54. The push slider 54 has a thrust ramp that cooperates with the parking pawl 41. As the parking push lever 52 slides, the thrust ramp of the push slider 54 gradually squeezes the parking pawl 41, causing the parking pawl 41 to rotate around the fixed axis 42.

[0024] The parking pawl 41 has a parking protrusion 411 that mates with the tooth groove 31 of the parking gear 3. When the parking pawl 41 rotates to a specific angle, the parking protrusion 411 precisely engages with the evenly spaced tooth groove 31 on the outer side of the parking gear 3. Since the depth of the tooth groove 31 is greater than ¼ of the radius of the parking gear 3, this depth design ensures that the parking protrusion 411 and the tooth groove 31 are tightly engaged, forming a stable mechanical locking structure. Even if the vehicle is subjected to strong vibration or bumps underground, the parking pawl 41 will not easily disengage from the tooth groove 31, ensuring that the vehicle is in a stable parking state.

[0025] When it is necessary to release the parking brake, the central control module controls the parking motor 6 to rotate in reverse. The parking push rod 52 slides in the opposite direction under the drive gear 531, releasing the elastic potential energy of the compression spring 56. The return spring 43 then drives the parking pawl 41 to reset, indirectly causing the push slider 54 to reset. This, in turn, separates the parking pawl 41 from the tooth groove 31 of the parking gear 3, allowing the vehicle to release the parking brake and resume normal driving. This design enables the parking mechanism to achieve stable parking while providing a reliable unlocking function, with a smooth and stable operation.

[0026] Human body sensing parking module: The human body sensing parking module includes a pressure sensor group and an infrared human body sensor group installed on the driver's seat. The pressure sensor group consists of multiple pressure sensor arrays distributed to monitor changes in the pressure distribution of the driver's seat in real time. The infrared human body sensor group is used to detect the presence of a human body in the driver's seat area. The pressure sensor group and the infrared human body sensor group adopt a redundant design. When the pressure in the driver's seat is detected to be lower than the preset value and the infrared human body sensor group does not detect a human body, the central control module controls the cutting off of the vehicle's fuel and electrical circuits within 2 seconds, shutting off the engine and activating the parking motor 6. This redundant design improves the accuracy and reliability of detection and avoids situations where the vehicle cannot be parked in time due to the failure of a single sensor. For example, when the driver temporarily leaves the driver's seat, the pressure sensor detects a pressure change, the infrared human body sensor confirms that no one is there, and the parking device responds quickly, automatically completing the engine shutdown and parking operation to prevent the vehicle from rolling and causing an accident.

[0027] Intelligent Overspeed Braking Module: The intelligent overspeed braking module includes a GPS positioning speed measurement unit, an alarm unit, and an electromagnetic braking execution unit. The GPS positioning speed measurement unit compares real-time vehicle speed data with a preset overspeed threshold. When the vehicle speed exceeds the preset overspeed threshold, the alarm unit issues an audible and visual alarm. If the vehicle speed does not decrease below the threshold within 3 seconds, the central control module controls the electromagnetic braking execution unit to activate. The electromagnetic braking execution unit brakes the vehicle drive shaft 2 using electromagnetic force, and the braking torque can be automatically adjusted according to the difference between the vehicle speed and the threshold. It should be noted that both the electromagnetic braking execution unit and the brake gear are installed on the vehicle drive shaft 53. This achieves accurate monitoring of vehicle speed and intelligent braking, providing appropriate braking force at different speeds, avoiding excessive or insufficient braking, and improving vehicle safety under overspeed conditions. For example, when a vehicle is speeding in an underground tunnel, an alarm first alerts the driver. If the driver does not slow down in time, the electromagnetic braking execution unit automatically activates, adjusting the braking torque according to the degree of overspeed to smoothly reduce the vehicle speed.

[0028] Collision Emergency Braking Module: The collision emergency braking module includes collision sensor arrays distributed at the front, rear, and sides of the vehicle. These arrays consist of a combination of acceleration and pressure sensors. When the collision sensor array detects a collision signal intensity exceeding a preset collision threshold, the central control module immediately activates all-wheel lock-up braking, cuts off unnecessary circuits, and triggers a vehicle emergency alarm. This multi-sensor design enables rapid and accurate detection of collisions and a swift response, minimizing collision damage and ensuring the safety of personnel and equipment. For example, in the instant of a collision, the collision sensor array promptly captures the signal, and the central control module quickly initiates braking and alarm activation to prevent secondary accidents.

[0029] Central Control Module: The central control module is connected to the parking motor 6, the human body sensing parking module, the intelligent overspeed braking module, and the collision emergency braking module. It receives and analyzes data from each module and controls the parking motor 6 to perform actions according to preset rules. As the core of the entire device, the central control module realizes intelligent linkage and collaborative work between the modules, ensuring safe parking and operation of the vehicle under various working conditions.

[0030] In one embodiment, at a coal mine underground work site, the parking device of the present invention for the mine explosion-proof trackless rubber-tired vehicle is installed on the rubber-tired vehicle.

[0031] When the driver leaves the driver's seat after completing the transportation task, the pressure sensor group on the driver's seat detects a change in pressure distribution. When the pressure value is lower than the preset value, the infrared human body sensor group confirms that no one is in the driver's seat area. Within 2 seconds, the central control module quickly controls the cutting off of the vehicle's fuel and electrical circuits, shuts off the engine, and starts the parking motor 6. Through the parking driver 5, the parking limiter 4 is activated, causing the parking protrusion 411 of the parking pawl 41 to engage with the tooth groove 31 of the parking gear 3, completing the automatic parking operation and effectively preventing the vehicle from rolling away.

[0032] During vehicle operation, the GPS positioning and speed measurement unit monitors the vehicle speed in real time and transmits the data to the central control module. When the vehicle exceeds the speed limit (e.g., 15 km / h), the alarm unit immediately issues an audible and visual alarm to remind the driver to slow down. If the driver does not take deceleration measures within 3 seconds, the central control module activates the electromagnetic braking actuator. The electromagnetic force acts on the vehicle's drive shaft 2, automatically adjusting the braking torque based on the difference between the vehicle speed and the threshold, allowing the vehicle to decelerate smoothly and preventing accidents caused by speeding.

[0033] When a collision occurs while the vehicle is traveling underground, the collision sensor array (accelerometer and pressure sensor) distributed at the front, rear and sides of the vehicle quickly detects the collision signal. When the signal strength exceeds the preset collision threshold, the central control module immediately controls the collision emergency braking module to activate all wheel lock-up braking, while cutting off unnecessary circuits to prevent secondary accidents such as electrical fires caused by the collision, and triggering the vehicle emergency alarm to notify surrounding personnel and the monitoring center.

[0034] During daily operation of the vehicle, even if it encounters bumps or vibrations in the underground roadway, the parking mechanism can maintain a stable locking state due to the deep tooth groove 31 design of the parking gear 3 in the parking mechanism and the stable cooperation of components such as the parking limiter 4 and the parking drive 5. There will be no problems such as gear separation or misalignment, ensuring the safe and reliable parking of the vehicle.

[0035] Through practical application, the parking device for mine explosion-proof trackless rubber-tired vehicles of this utility model effectively improves the safety and reliability of vehicles and meets the needs of complex underground working environments in coal mines.

[0036] The above description is merely an embodiment of this application and is not intended to limit the scope of 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 scope of the claims of this application.

Claims

1. A parking device for a mine explosion-proof trackless rubber-tired vehicle, characterized in that, include: A parking mechanism, comprising a housing, a parking gear mounted to a vehicle drive shaft, a parking limiter cooperating with the parking gear, a parking driver, and a parking motor, wherein the parking gear has up to 8 tooth grooves evenly distributed on its outer side, and the depth of the tooth grooves is greater than ¼ of the radius of the parking gear. The human body sensing parking module includes a pressure sensor group and an infrared human body sensor group installed on the driver's seat. The pressure sensor group consists of multiple pressure sensor arrays distributed to monitor changes in the pressure distribution of the driver's seat in real time. The infrared human body sensor group is used to detect the presence of a human body in the driver's seat area. The intelligent overspeed braking module includes a GPS positioning and speed measurement unit, an alarm unit, and an electromagnetic braking execution unit. The collision emergency braking module includes a collision sensor array distributed at the front, rear and sides of the vehicle body, the collision sensor array being composed of a combination of acceleration sensors and pressure sensors; The central control module is connected to the parking motor, the human body sensing parking module, the intelligent overspeed braking module, and the collision emergency braking module to receive and analyze data from each module, and control the parking motor to perform actions according to preset rules.

2. The parking device for a mine explosion-proof trackless rubber-tired vehicle according to claim 1, characterized in that, The parking limiter includes a parking pawl, a fixed shaft, and a return spring installed between the parking pawl and the fixed shaft. The parking pawl is rotatable relative to the fixed shaft. The parking pawl has a parking protrusion that engages with the toothed groove. The parking pawl has a parking state and a non-parking state. When the parking pawl is in the parking state, the parking protrusion engages with the toothed groove. When the parking pawl is in the non-parking state, the parking protrusion is separated from the toothed groove.

3. A parking device for a mine explosion-proof trackless rubber-tired vehicle according to claim 2, characterized in that, The parking actuator includes two fixed blocks fixed to the inner wall of the housing, a parking push rod slidably installed between the two fixed blocks, and a drive shaft connecting the parking motor and the parking push rod. The parking push rod has a strip-shaped toothed groove on the side near the drive shaft, and the drive shaft has a drive gear that mates with the strip-shaped toothed groove on the side near the parking push rod.

4. A parking device for a mine explosion-proof trackless rubber-tired vehicle according to claim 3, characterized in that, A push slider is sleeved on the outer side of one end of the parking push rod, and a fixing ring is fixed on the outer side of the other end. A compression spring is provided between the push slider and the fixing ring, which is sleeved on the outer side of the parking push rod. The push slider has a thrust ramp that cooperates with the parking pawl. The parking push rod squeezes the push slider through the compression spring, so that the push slider moves along the extension direction of the parking push rod. The thrust ramp squeezes the parking pawl until the parking protrusion is embedded in the tooth groove.

5. A parking device for a mine explosion-proof trackless rubber-tired vehicle according to claim 4, characterized in that, The fixed block has a T-shaped groove on the side near the push slider, and the push slider has a T-shaped protrusion on the side near the fixed block that cooperates with the T-shaped groove.

6. A parking device for a mine explosion-proof trackless rubber-tired vehicle according to claim 1, characterized in that, The pressure sensor group and the infrared human body sensor group adopt a redundant design. When the driver's seat pressure is detected to be lower than the preset value and the infrared human body sensor group does not detect a human body, the central control module controls the cutting off of the vehicle's fuel line and electrical circuit within 2 seconds, so that the engine is turned off and the parking motor is started.

7. A parking device for a mine explosion-proof trackless rubber-tired vehicle according to claim 1, characterized in that, The alarm unit includes sound and light alarm components with different frequencies and colors.

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