A trackless rubber-tyred vehicle safety prompting device

Abstract

This invention relates to the field of audible warning technology, and more specifically, to a safety warning device for trackless rubber-tired vehicles. The device includes a housing fixedly installed on the trackless rubber-tired vehicle, and a pneumatic mechanism is disposed within the housing. The pneumatic mechanism consists of a cylinder, a first piston, and a telescopic rod. The first piston is movably disposed inside the cylinder, and its top end is fixedly connected to one end of the telescopic rod. The telescopic rod passes through the top end of the cylinder and extends to its exterior. The circumferential sidewall of the telescopic rod has linearly arranged toothed grooves along the axial direction, and one side of the telescopic rod has transmission teeth that mesh with the toothed grooves. A speed ratio mechanism and a delay mechanism are respectively disposed on both sides of the transmission teeth, and the transmission teeth, speed ratio mechanism, and delay mechanism are coaxially arranged. The transmission end of the speed ratio mechanism is connected to a pneumatic warning mechanism. This invention solves the problem that warning devices for trackless rubber-tired vehicles rely on electric power or require manual operation when temporarily stopped in mines.

Description

Technical Field

[0001] This invention relates to the field of audible warning technology, and more specifically, to a safety warning device for trackless rubber-wheeled vehicles. Background Technology

[0002] Trackless rubber-tired vehicles are key equipment for transportation in underground mine roadways. In narrow, poorly lit, and noisy environments, reliable warning systems play a crucial role in preventing vehicle collisions and ensuring personnel safety. However, in actual operation, trackless rubber-tired vehicles often need to make temporary stops in the roadways, such as loading and unloading materials, waiting for passage, or performing temporary repairs. At these times, the vehicles are in a powered-off state, and traditional electrical warning systems (such as electric horns and electronic buzzers) become completely ineffective due to the loss of power supply. The vehicles then become "silent hazards" in the roadways, posing a serious safety risk to pedestrians and following vehicles.

[0003] For the warning needs of temporary parking, there are currently two main types of solutions: one is electronic warning devices that rely on continuous power supply, which require additional backup power or supercapacitors. However, this increases the complexity, cost and maintenance difficulty of the system, and the battery life and reliability are difficult to guarantee in the harsh underground environment. The other is mechanical air horns that rely on the driver's active operation. However, in actual operation, the driver often forgets to turn them on due to negligence or emergency, or cannot provide continuous warnings after leaving the cab, which poses a risk of human error.

[0004] To address the aforementioned issues, a safety warning device for trackless rubber-wheeled vehicles is proposed. Summary of the Invention

[0005] (a) Technical problems to be solved To address the problems existing in the prior art, the present invention provides a safety warning device for trackless rubber-tired vehicles, thereby solving the problem mentioned in the background art that the warning device relies on electric power supply or requires manual operation when trackless rubber-tired vehicles are temporarily parked in mines.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a safety warning device for a trackless rubber-tired vehicle, comprising a housing fixedly installed on the trackless rubber-tired vehicle, and a pneumatic mechanism disposed within the housing. The pneumatic mechanism consists of a cylinder, a first piston, and a telescopic rod. The first piston is movably disposed inside the cylinder, and the top end of the first piston is fixedly connected to one end of the telescopic rod. The telescopic rod passes through the top end of the cylinder and extends to its exterior. The circumferential sidewall of the telescopic rod is provided with toothed grooves arranged linearly along the axial direction, and one side of the telescopic rod is provided with transmission teeth that mesh with the toothed grooves. A speed ratio mechanism and a delay mechanism are respectively disposed on both sides of the transmission teeth, and the transmission teeth, speed ratio mechanism, and delay mechanism are coaxially arranged. The transmission end of the speed ratio mechanism is connected to a pneumatic warning mechanism.

[0007] The present invention is further configured such that an air inlet is provided on one side of the cylinder, and the air inlet is located at the lower end of one side of the cylinder, one end of the air inlet extends through the cylinder into its interior, and the other end of the air inlet is located below the first piston.

[0008] The present invention is further configured such that a transmission shaft is provided on both sides of the transmission tooth, and the speed ratio mechanism and the delay mechanism are both unidirectionally connected to the transmission shaft.

[0009] The present invention is further configured such that the pneumatic mechanism includes a return spring disposed in the cylinder, and the return spring is sleeved on the outside of the telescopic rod, one end of the return spring abuts against the top of the first piston, and the other end of the return spring abuts against the top of the cylinder cavity.

[0010] The present invention is further configured such that a rotating seat for supporting the rotation of the transmission gear is provided on one side of the top of the cylinder, and a supporting cylinder is provided on both sides of the rotating seat.

[0011] The present invention is further configured such that the speed ratio mechanism includes a first speed ratio gear disposed on one side of the transmission gear and connected by a transmission shaft, a second speed ratio gear meshing with the first speed ratio gear, and an eccentric disk disposed on one side of the second speed ratio gear and coaxially disposed with the second speed ratio gear, wherein the pneumatic warning mechanism is rotatably connected to the eccentric disk.

[0012] The present invention is further configured such that the diameters of the transmission teeth and the first speed ratio gear have an equal arithmetic ratio, and the diameter of the transmission teeth is smaller than the diameter of the first speed ratio gear; The diameter of the first speed ratio gear is larger than the diameter of the second speed ratio gear.

[0013] The present invention is further configured such that the pneumatic warning mechanism includes a piston cylinder disposed on the top of the housing, a second piston disposed inside the piston cylinder and a drive linkage rotatably connected to the bottom of the second piston, and a horn disposed on the top of the piston cylinder.

[0014] The present invention is further configured such that the delay mechanism includes a delay wheel disposed on a transmission shaft on the side of the transmission teeth away from the first speed ratio gear, a clearance pawl disposed below the delay wheel, a balance wheel disposed below the clearance pawl, and a reciprocating wire disposed on one side of the balance wheel.

[0015] The invention is further configured such that a driving claw is provided on the side of the gap claw near the balance wheel, and the driving claw is Y-shaped; a driving block is eccentrically provided on the side of the balance wheel away from the reciprocating wire, and the two ends of the Y-shaped driving block and the driving claw abut against each other.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention provides a safety warning device for trackless rubber-tired vehicles, which has the following beneficial effects: This invention utilizes the power of an air pump while the rubber-wheeled vehicle is in motion to compress a return spring, storing mechanical energy. When the vehicle is turned off and stopped, this energy is automatically released. During this release, a transmission gear drives a speed ratio mechanism, causing the second piston to move up and down, resulting in a loud warning sound from the horn. Simultaneously, a delay mechanism reduces the energy release rate of the return spring, ensuring continuous output of the warning sound, thus providing a continuous warning when the trackless rubber-wheeled vehicle is stopped in the mine due to power failure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the safety warning device for trackless rubber-tired vehicles.

[0018] Figure 2 This is a schematic diagram of the internal structure of a safety warning device for trackless rubber-tired vehicles.

[0019] Figure 3 This is a schematic diagram of the pneumatic mechanism.

[0020] Figure 4 This is a schematic diagram of the pneumatic mechanism and the speed ratio mechanism.

[0021] Figure 5 This is a schematic diagram of the pneumatic warning mechanism.

[0022] Figure 6 This is a schematic diagram of the pneumatic mechanism and the delay mechanism.

[0023] Figure 7 This is a schematic diagram of the delay mechanism.

[0024] In the diagram: 1. Housing; 2. Pneumatic mechanism; 201. Cylinder; 202. Air inlet; 203. First piston; 204. Telescopic rod; 205. Return spring; 206. Gear groove; 207. Rotating seat; 3. Speed ​​ratio mechanism; 301. Transmission gear; 302. First speed ratio gear; 303. Second speed ratio gear; 304. Eccentric disc; 4. Pneumatic warning mechanism; 401. Drive linkage; 402. Second piston; 403. Piston cylinder; 404. Horn; 5. Delay mechanism; 501. Delay wheel; 502. Gap claw; 503. Balance wheel; 504. Reciprocating screw; 505. Drive claw; 506. Drive block. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0028] For examples, please refer to Figure 1 - Figure 7 A safety warning device for a trackless rubber-tired vehicle includes a housing 1, which is fixedly installed on the trackless rubber-tired vehicle. The installation position is selected according to the trackless rubber-tired vehicle. A pneumatic mechanism 2 is provided inside the housing 1. The pneumatic mechanism 2 consists of a cylinder 201, a first piston 203, and a telescopic rod 204. The first piston 203 is movably disposed inside the cylinder 201, and its top end is fixedly connected to one end of the telescopic rod 204. The telescopic rod 204 passes through the top end of the cylinder 201 and extends to its outside. The circumferential sidewall of the telescopic rod 204 has a linear array of toothed grooves 206 arranged along the axial direction. A transmission tooth 301 that meshes with the toothed grooves 206 is provided on one side of the telescopic rod 204. A speed ratio mechanism 3 and a delay mechanism 5 are respectively provided on both sides of the transmission tooth 301. The transmission tooth 301, the speed ratio mechanism 3, and the delay mechanism 5 are coaxially arranged. A pneumatic warning mechanism 4 is connected to the transmission end of the speed ratio mechanism 3.

[0029] An air inlet 202 is provided on one side of the cylinder 201, and the air inlet 202 is located at the lower end of one side of the cylinder 201. One end of the air inlet 202 extends through the cylinder 201 into its interior, and the other end of the air inlet 202 is located below the first piston 203. This allows the first piston 203 to move down and fit against the upper part of the air inlet 202, so that the first piston 203 and the bottom of the cylinder 201 form an air intake chamber. If the air inlet 202 does not extend into the interior of the cylinder 201, then after the first piston 203 moves down to the bottom of the cylinder 201, the first piston 203 will block the air inlet 202, preventing airflow from entering the cylinder 201. Alternatively, if the air inlet 202 is located above the first piston 203, the airflow will not be able to push the first piston 203 upward after entering the cylinder 201. The air inlet 202 is connected to the air pump on the trackless rubber-wheeled vehicle.

[0030] Specifically, when the trackless rubber-wheeled vehicle starts, its air pump starts and delivers airflow into the cylinder 201 through the air inlet 202. After the airflow enters the cylinder 201, it pushes the first piston 203 upward. The upward movement of the first piston 203 causes the telescopic rod 204 to move upward and extend. When the telescopic rod 204 extends, it engages the transmission gear 301 through the linear array of toothed slots 206 to rotate. It should be noted that the speed ratio mechanism 3 and the delay mechanism 5, which are coaxially arranged on both sides of the transmission gear 301, are connected in a unidirectional transmission manner. If the connection is a ratchet and ratchet structure, its unidirectional transmission is existing technology and is not shown in the attached drawings. In this application, the unidirectional transmission direction is that when the telescopic rod 204 moves upward, the linear array of toothed slots 206 engages the transmission gear 301 to rotate, but the transmission gear 301 cannot drive the speed ratio mechanism 3 and the delay mechanism 5 to rotate. When the 04 moves downward, the transmission gear 301 can drive the speed ratio mechanism 3 and the delay mechanism 5 to rotate. Therefore, after the trackless rubber-wheeled vehicle starts, it will apply power to the pneumatic mechanism 2 through the air pump. After the trackless rubber-wheeled vehicle stops, the first piston 203 of the pneumatic mechanism 2 will reset the power, drive the telescopic rod 204 to move downward, thereby driving the transmission gear 301 to rotate. The rotation of the transmission gear 301 will drive the speed ratio mechanism 3 to rotate, so that the small rotation of the transmission gear 301 becomes a large-amplitude drive, which in turn gives kinetic energy to the pneumatic warning mechanism 4, causing the pneumatic warning mechanism 4 to emit an alarm sound, realizing the power-off safety warning alarm after stopping. At the same time, the setting of the delay mechanism 5 limits the rotation cycle of the transmission gear 301, thereby extending the downward movement time of the telescopic rod 204 that meshes with the transmission gear 301, thus realizing a long-term power-off safety warning alarm.

[0031] The pneumatic mechanism 2 also includes a return spring 205 disposed in the cylinder 201, and the return spring 205 is sleeved on the outside of the telescopic rod 204. One end of the return spring 205 abuts against the top of the first piston 203, and the other end of the return spring 205 abuts against the top of the inner cavity of the cylinder 201. When the trackless rubber-wheeled vehicle inputs gas into the cylinder 201 through the air pump, the airflow pushes the first piston 203 upward. The upward movement of the first piston 203 will compress the return spring 205. Therefore, after stopping, when the air pump stops supplying gas into the cylinder 201, the compressed return spring 205 rebounds and pushes the first piston 203 downward, thereby causing the telescopic rod 204 to move downward. Through the meshing of the tooth groove 206 with the transmission tooth 301, the rod rotates, thereby driving the speed ratio mechanism 3 and the delay mechanism 5.

[0032] A rotating seat 207 for supporting the rotation of the transmission gear 301 is provided on one side of the top of the cylinder 201. A transmission shaft is provided on both sides of the transmission gear 301, and the speed ratio mechanism 3 and the delay mechanism 5 are connected through the transmission shaft. In order to improve the transmission effect of the transmission shaft, a supporting cylinder is provided on both sides of the rotating seat 207 for supporting the transmission shaft.

[0033] The speed ratio mechanism 3 includes a first speed ratio gear 302 disposed on one side of the transmission gear 301 and connected via a transmission shaft, a second speed ratio gear 303 meshing with the first speed ratio gear 302, and an eccentric disk 304 disposed on one side of the second speed ratio gear 303 and coaxially disposed with the second speed ratio gear 303. The pneumatic warning mechanism 4 is rotatably connected to the eccentric disk 304. A vertical plate is provided inside the housing 1, which is used for supporting and installing various component structures. The specific structure is as follows: Figure 2 As shown, a drive shaft on one side of the transmission gear 301 extends through the vertical plate to the other side, and is unidirectionally connected to a first speed ratio gear 302. The diameters of the transmission gear 301 and the first speed ratio gear 302 have an equal arithmetic ratio, with the diameter of the transmission gear 301 being smaller than that of the first speed ratio gear 302. The movement distance formed by the angle of rotation of the tooth groove 206 meshing with a tooth block on the transmission gear 301 is proportionally amplified on the first speed ratio gear 302. This results in the first gear rotating one tooth position while the teeth on the first speed ratio gear 302 rotate several times that tooth position. The diameter of the first gear 302 is larger than that of the second gear 303, so that the first gear 302 can rotate a few teeth to drive the second gear 303 to rotate one revolution. Through the speed ratio difference, it can be combined so that the transmission gear 301 rotates one tooth position to drive the teeth on the coaxial first gear 302 to rotate N teeth positions. The rotation of N teeth positions meshes with the second gear 303 to rotate one revolution. The speed ratio can also be designed according to the actual situation, such as the transmission gear 301 rotating one tooth position and the second gear 303 rotating N revolutions. The second gear 303, which rotates in a circle, drives the eccentric disk 304 to rotate.

[0034] Furthermore, the pneumatic warning mechanism 4 includes a piston cylinder 403 disposed on the top of the housing 1, a second piston 402 disposed inside the piston cylinder 403, a drive rod 401 rotatably connected to the bottom of the second piston 402, and a horn 404 disposed on the top of the piston cylinder 403. The piston cylinder 403 is connected to the housing 1. One end of the drive rod 401 is rotatably connected to the bottom of the second piston 402, and the other end of the drive rod 401 is rotatably connected to the eccentric disk 304. The rotatable connection position is at the non-center position of the eccentric disk 304, so that when the eccentric disk 304 rotates, it drives one end of the drive rod 401 to move axially, thereby causing the end of the drive rod 401 connected to the second piston 402 to move the second piston 402 up and down inside the piston cylinder 403. The up and down movement causes the airflow to blow the horn 404 and emit a safety alarm sound.

[0035] like Figure 7 As shown, the delay mechanism 5 includes a delay wheel 501 disposed on the transmission shaft on the side of the transmission gear 301 away from the first speed ratio gear 302, a clearance pawl 502 disposed below the delay wheel 501, a balance wheel 503 disposed below the clearance pawl 502, and a reciprocating screw 504 disposed on one side of the balance wheel 503. The delay wheel 501 and the transmission shaft on one side of the transmission gear 301 are connected in one direction. When the telescopic rod 204 moves upward to engage the transmission gear 301, the transmission shaft cannot drive the delay wheel 501 to rotate. The clearance pawl 502 is rotatably mounted on one side of the housing 1 via a rotating shaft. The clearance pawl 502 has clearances at both ends. The pawls that engage with the delay wheel 501, and the gap pawls 502, rotate to intermittently engage the delay wheel 501, thereby controlling the rotation speed of the delay wheel 501. This causes the transmission gear 301 to rotate slowly. By reducing the rotation speed of the transmission gear 301, the meshing speed between the tooth groove 206 on the telescopic rod 204 and the transmission gear 301 is controlled, thereby reducing the rate at which the return spring 205 pushes the first piston 203 to descend. This extends the time it takes for the first piston 203 to descend to the bottom. It should be noted that the power for the speed ratio mechanism 3 to drive the pneumatic warning mechanism 4 comes from the meshing of the tooth groove 206 on the telescopic rod 204 and the transmission gear 301. Therefore, the longer the first piston 203 descends to the bottom, the longer the duration without an electric power source, and thus the longer the duration of the warning sound from the pneumatic warning mechanism 4.

[0036] Furthermore, a drive claw 505 is provided on the side of the gap claw 502 near the balance wheel 503, and the drive claw 505 is Y-shaped. A drive block 506 is eccentrically provided on the side of the balance wheel 503 away from the reciprocating wire 504, and the two ends of the drive block 506 and the drive claw 505 are in corresponding contact. The center of the balance wheel 503 is rotatably mounted on the side wall of the housing 1 through a rotating shaft, and the reciprocating wire 504 is provided on the side of the balance wheel 503 near the housing 1, that is, the reciprocating wire 504 is provided at the middle position between the balance wheel 503 and the inner wall of the housing 1. One end of the reciprocating wire 504 is fixedly connected to the inner wall of the housing 1, and the other end of the reciprocating wire 504 is fixedly connected to the side wall of the balance wheel 503.

[0037] Specifically, such as Figure 7 As shown, both ends of the gap pawl 502 are provided with inclined chamfers. When the delay wheel 501 rotates with the transmission gear 301, the delay wheel 501 pushes the inclined chamfers on the gap pawl 502, thereby causing the gap pawl 502 to rotate. When the gap pawl 502 rotates, it drives the drive pawl 505 to rotate. The rotation of the drive pawl 505 pushes the drive block 506 through one end of the Y-shape, thereby causing the balance wheel 503 to rotate. When the balance wheel 503 rotates, it applies a force to one end of the reciprocating wire 504. At the same time, the reciprocating wire 504 also has a restoring force on the balance wheel 503. The teeth on the delay wheel 501 push the pawl at one end of the gap pawl 502, so that when the gap pawl 502 rotates, the pawl at the other end of the gap pawl 502 enters the tooth gap of the delay wheel 501. Then, as the delay wheel 501 rotates, it abuts against the teeth, thereby stopping the delay wheel 501 from rotating. When the delay wheel 501 stops rotating, the reciprocating wire 504... The reset force of the balance wheel 503 drives the balance wheel 503 to rotate, thereby driving the drive block 506 to push one end of the Y-shaped drive pawl 505. The drive pawl 505 drives the gap pawl 502 to rotate in the opposite direction, causing the pawl on the gap pawl 502 that was in contact with the tooth block of the delay wheel 501 to disengage from the delay wheel 501. At the same time, when disengaging, the teeth on the delay wheel 501 push the chamfer of the pawl on the gap pawl 502, thereby giving the gap pawl 502 a driving force, causing the drive pawl 505 to push the drive block 506, which again gives the reciprocating screw 504 a force and makes the reciprocating screw 504 have a reset force. When the pawl on the gap pawl 502 disengages, the pawl at the other end of the gap pawl 502 re-enters the delay wheel 501 under the action of rotation, preparing for engagement, and thus repeating the cycle, thereby extending the downward movement rate of the first piston 203 and increasing the sounding warning duration of the pneumatic warning mechanism 4.

[0038] Working principle: When the trackless rubber-wheeled vehicle starts, air is supplied to the cylinder 201 by the air pump, which pushes the first piston 203 upward. The first piston 203 moves upward, compressing the return spring 205 and causing the telescopic rod 204 to move upward. When the trackless rubber-wheeled vehicle stops temporarily or stops to load or unload goods, the vehicle is turned off, and the air pump stops supplying air to the cylinder 201. The compressed return spring 205 pushes the first piston 203 downward, which in turn causes the telescopic rod 204 to move downward. When the telescopic rod 204 moves downward, it meshes with the transmission gear 301 through the tooth groove 206 and rotates. The transmission gear 301 drives the speed ratio mechanism 3 and the delay mechanism 5 to rotate through the transmission shafts on both sides.

[0039] First, when the delay wheel 501 rotates with the transmission gear 301, it pushes the inclined chamfer on the gap pawl 502, causing the gap pawl 502 to rotate. The rotation of the gap pawl 502 drives the drive pawl 505 to rotate. The rotation of the drive pawl 505 pushes the drive block 506 through one end of the Y-shaped mechanism, thus causing the balance wheel 503 to rotate. The rotation of the balance wheel 503 applies a force to one end of the reciprocating screw 504, and simultaneously, the reciprocating screw 504 also exerts a restoring force on the balance wheel 503. The teeth on the delay wheel 501 push the pawl at one end of the gap pawl 502, causing the other end of the pawl 502 to enter the tooth gap of the delay wheel 501 as the gap pawl rotates. Then, as the delay wheel 501 rotates, it contacts the teeth, causing the delay wheel 501 to stop rotating. When the delay wheel 501 stops rotating, the reciprocating screw 504 restores the balance wheel 503. The force pushes the balance wheel 503 to rotate, thereby driving the drive block 506 to push one end of the Y-shaped drive pawl 505. The drive pawl 505 drives the gap pawl 502 to rotate in the opposite direction, causing the pawl on the gap pawl 502 that was in contact with the teeth of the delay wheel 501 to disengage from the delay wheel 501. At the same time, when disengaging, the teeth on the delay wheel 501 push the chamfer of the pawl on the gap pawl 502, thereby giving the gap pawl 502 a driving force, causing the drive pawl 505 to push the drive block 506, which again gives the reciprocating screw 504 a force and makes the reciprocating screw 504 have a restoring force. When the pawl on the gap pawl 502 disengages, the pawl at the other end of the gap pawl 502 re-enters the delay wheel 501 under the action of rotation, preparing for engagement, and so on, thus causing the transmission gear 301 to rotate slowly, thereby slowing down the descent speed of the first piston 203.

[0040] The slowly rotating transmission gear 301 drives the first speed ratio gear 302 to rotate. The rotation of the first speed ratio gear 302 meshes with the rotation of the second speed ratio gear 303. Through the transmission speed ratio, when the transmission gear 301 rotates at a small angle, the second speed ratio gear 303 can rotate in a circle, thereby driving the eccentric disk 304 to rotate, and then driving the drive connecting rod 401 to move up and down, thereby causing the second piston 402 to move inside the piston cylinder 403, and then blowing the horn 404. Combined with the delay mechanism 5, a long-term power outage safety alarm is achieved.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety warning device for trackless rubber-tired vehicles, characterized in that: The system includes a housing (1) fixedly mounted on the trackless rubber-tired vehicle, and a pneumatic mechanism (2) is provided inside the housing (1). The pneumatic mechanism (2) consists of a cylinder (201), a first piston (203), and a telescopic rod (204). The first piston (203) is movably disposed inside the cylinder (201), and the top end of the first piston (203) is fixedly connected to one end of the telescopic rod (204). The telescopic rod (204) passes through the top end of the cylinder (201) and extends to its exterior. The telescopic rod (204) has toothed grooves (206) arranged linearly along the axial direction on its circumferential sidewall. The telescopic rod (204) has a transmission tooth (301) on one side that meshes with the toothed groove (206). A speed ratio mechanism (3) and a delay mechanism (5) are respectively provided on both sides of the transmission tooth (301). The transmission tooth (301), the speed ratio mechanism (3) and the delay mechanism (5) are coaxially arranged. The transmission end of the speed ratio mechanism (3) is connected to a pneumatic warning mechanism (4).

2. The safety warning device for a trackless rubber-tired vehicle according to claim 1, characterized in that: An air inlet (202) is provided on one side of the cylinder (201), and the air inlet (202) is located at the lower end of one side of the cylinder (201). One end of the air inlet (202) extends through the cylinder (201) into its interior, and one end of the air inlet (202) is located below the first piston (203).

3. The safety warning device for a trackless rubber-tired vehicle according to claim 1, characterized in that: Both sides of the transmission gear (301) are provided with transmission shafts, and the speed ratio mechanism (3) and the delay mechanism (5) are both connected to the transmission shafts in a unidirectional transmission manner.

4. A safety warning device for a trackless rubber-tired vehicle according to claim 2, characterized in that: The pneumatic mechanism (2) further includes a return spring (205) disposed in the cylinder (201), and the return spring (205) is sleeved on the outside of the telescopic rod (204). One end of the return spring (205) abuts against the top of the first piston (203), and the other end of the return spring (205) abuts against the top of the inner cavity of the cylinder (201).

5. A safety warning device for a trackless rubber-tired vehicle according to claim 4, characterized in that: The cylinder (201) has a rotating seat (207) on one side of its top end for supporting the rotation of the transmission gear (301), and the rotating seat (207) has supporting cylinders on both sides.

6. A safety warning device for a trackless rubber-tired vehicle according to claim 1, characterized in that: The speed ratio mechanism (3) includes a first speed ratio gear (302) disposed on one side of the transmission gear (301) and connected by a transmission shaft, a second speed ratio gear (303) meshing with the first speed ratio gear (302), and an eccentric disk (304) disposed on one side of the second speed ratio gear (303) and coaxially disposed with the second speed ratio gear (303). The pneumatic warning mechanism (4) is rotatably connected to the eccentric disk (304).

7. A safety warning device for a trackless rubber-tired vehicle according to claim 6, characterized in that: The diameters of the transmission tooth (301) and the first speed ratio gear (302) are in an equal arithmetic ratio, and the diameter of the transmission tooth (301) is smaller than the diameter of the first speed ratio gear (302). The diameter of the first speed ratio gear (302) is larger than the diameter of the second speed ratio gear (303).

8. A safety warning device for a trackless rubber-tired vehicle according to claim 7, characterized in that: The pneumatic warning mechanism (4) includes a piston cylinder (403) disposed on the top of the housing (1), a second piston (402) disposed inside the piston cylinder (403) and a drive linkage (401) rotatably connected to the bottom of the second piston (402), and a horn (404) disposed on the top of the piston cylinder (403).

9. A safety warning device for a trackless rubber-tired vehicle according to claim 8, characterized in that: The delay mechanism (5) includes a delay wheel (501) disposed on the transmission shaft on the side of the transmission gear (301) away from the first speed ratio gear (302), a clearance pawl (502) disposed below the delay wheel (501), a balance wheel (503) disposed below the clearance pawl (502), and a reciprocating screw (504) disposed on one side of the balance wheel (503).

10. A safety warning device for a trackless rubber-tired vehicle according to claim 9, characterized in that: The gap claw (502) is provided with a drive claw (505) on the side near the balance wheel (503), and the drive claw (505) is Y-shaped. The balance wheel (503) is provided with a drive block (506) on the side away from the reciprocating wire (504), and the two ends of the drive block (506) and the drive claw (505) are in corresponding contact.

Images