Safety transportation guarantee system for mine vehicles

Abstract

The invention provides a mine vehicle safety transportation guarantee system which comprises a half-shaft bearing seat and an anti-explosion double-output-shaft motor, the half-shaft bearing seat is installed below a mine vehicle frame, one end of the half-shaft bearing seat is fixedly connected with a friction plate installation outer cavity, the anti-explosion double-output-shaft motor is fixedly installed at the top of a transmission device installation cavity, and the transmission device installation cavity is fixedly connected with the anti-explosion double-output-shaft motor. A driving shaft at the output end of the anti-explosion double-output-shaft motor is connected with the worm through a connector, and the inner wall of the transmission device installation cavity is movably connected with a locking mechanism. According to the parking braking device, the rapid driving and parking braking functions are achieved, stable braking and uniform braking of wet braking are achieved through the structural form of the double worm and gear and the transmission lead screw, the parking braking function is easily achieved through self-locking of a mechanical structure, motor power does not need to be consumed, and the cost is reduced. By means of the design of the device, the braking response speed of the mine vehicle is greatly increased, braking force control is more accurate, complete linearization of a chassis is achieved, and a powerful technical carrier is provided for mine intellectualization and electrification.

Description

Technical Field

[0001] The present invention relates to a safety transportation guarantee system for mine vehicles. Background Art

[0002] In recent years, with the rapid development of the digital economy and intelligent technologies, the coal industry in China has gradually witnessed a climax of intelligent coal mine construction. Mine vehicles are continuously developing towards diversified power sources. More and more hybrid electric-hydrogen fuel cell and pure electric mine vehicles have started to be equipped for mining production, and new energy mine vehicles have gradually become the main models of mining production transportation equipment. Compared with traditional vehicles, new energy mine vehicles have the advantages of being green and environmentally friendly, having a low failure rate, and being more easily electronically controlled. Therefore, realizing the autonomous driving of mine vehicles on the carrier of new energy mine vehicles is an effective means to effectively improve mine production transportation, ensure transportation quality, and improve vehicle comfort. At the same time, it also meets the technical requirements of current intelligent mine development for mine vehicles. As an important part of realizing the construction of intelligent mines, autonomous driving technology is an important link in forming an intelligent mine system with comprehensive perception, real-time interconnection, autonomous learning, and collaborative control. At the same time, as a hot research field in the current vehicle field, it has also received attention from all sectors of society. Meanwhile, as an important component of vehicle technology innovation and the technical core of intelligent vehicles, the drive-by-wire chassis eliminates hydraulic or mechanical connections and is completely controlled by electrical signals. It has the unique advantages of fast response speed and high control precision, perfectly meeting the development needs of vehicle intelligence, electrification, and lightweighting, and is the key carrier for realizing autonomous driving.

[0003] However, the current braking system of mine vehicles still mainly uses pressure-relief hydraulic braking. The braking force is difficult to accurately control, and the vehicle comfort during braking is poor, making it difficult to meet the requirements of intelligent vehicles for precise braking force on the chassis. When braking, the brake fluid in the brake piston cavity is discharged, and the brake return spring presses the brake piston to achieve braking. The braking response speed is affected by the discharge speed of the brake fluid and the properties of the spring. At the same time, due to factors such as the resistance of the brake fluid, the braking force is difficult to accurately control. Also, because it works in harsh environments such as high temperature, strong vibration, sand, dust, rain, etc., strict requirements are imposed on the reliability and safety of the braking system, and its performance directly affects the driving safety of the whole vehicle. When using drive-by-wire mechanical braking, the braking performance and service life will be affected by the strength of the mechanical structure. In particular, the transmission system composed of mechanical structures will face the problem of material wear. Therefore, researching a drive-by-wire mechanical braking system that meets innovation, miniaturization, structural redundancy, and can accurately control the clamping force is of great significance for promoting the innovation of vehicle braking system technology and boosting the drive-by-wire and intelligentization of mine vehicle chassis. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, the present invention provides a mine vehicle safe transportation guarantee system which can quickly realize braking response, meet the structural requirements of service braking and parking braking, and easily realize precise control of braking force, thereby providing technical support for the intelligentization of mine vehicles.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] The present invention provides a mine vehicle safe transportation guarantee system, comprising:

[0007] A half-axle bearing seat, the half-axle bearing seat is installed under the frame of the mine vehicle, one end of the half-axle bearing seat is fixedly connected with a friction plate installation outer cavity, the friction plate installation outer cavity is fixedly connected with the transmission device installation cavity through a friction plate connecting platform and a transmission device connecting platform, and the top of the transmission device installation cavity is respectively provided with a first installation cavity and a second installation cavity, the tops of the first installation cavity and the second installation cavity are both fixedly connected with a mounting seat, and a worm is rotatably connected inside the mounting seat, the worm is connected to the transmission screw through a driving structure, and the transmission screw passes through the first installation cavity and the second installation cavity respectively and extends to the inside of the friction plate installation outer cavity;

[0008] An explosion-proof dual-output shaft motor is fixedly mounted to the top of the transmission device mounting cavity and is located between the first mounting cavity and the second mounting cavity. The output end of the explosion-proof dual-output shaft motor is fixedly connected to a drive shaft, and the drive shaft is connected to the worm through a connector. A locking mechanism is movably connected to the inner wall of the transmission device mounting cavity, and the locking mechanism is connected to the ratchet on the drive structure.

[0009] In the present technical solution, an outer cavity connecting platform is provided between the half-shaft bearing seat and the friction plate mounting outer cavity, a plurality of evenly distributed mounting holes are opened on the edge of the outer cavity connecting platform, the outer cavity connecting platform is fixedly connected to the friction plate mounting outer cavity by bolts in the mounting holes, a brake device heat dissipation oil inlet is fixedly connected to the top of the friction plate mounting outer cavity, a plurality of evenly distributed brake friction steel plates and brake friction plates are arranged in the friction plate mounting outer cavity, and the brake device heat dissipation oil inlet is connected to the inside of the friction plate mounting outer cavity.

[0010] In the present technical solution, the friction plate mounting outer cavity and the transmission device mounting cavity are both provided with mutually connected half-axle holes, a wheel axle is arranged in the half-axle hole, and the wheel axle is penetrated and plugged with the friction plate mounting outer cavity and the transmission device mounting cavity, a plurality of brake friction steel plates and brake friction plates are arranged on the surface of the wheel axle, the inner ring of the brake friction steel plate is provided with convex teeth and is engaged and slidably engaged with the wheel axle, and the outer ring of the brake friction plate is provided with convex teeth and is engaged and slidably engaged with the inner wall of the friction plate mounting outer cavity.

[0011] In this technical solution, the transmission device installation cavity is fixedly connected to the first installation cavity and the second installation cavity respectively. The first installation cavity and the second installation cavity are symmetrically arranged on both sides of the transmission device installation cavity. There is a gap for connector installation formed between both ends of the explosion-proof double-output shaft motor and the first installation cavity and the second installation cavity respectively, and both ends of the explosion-proof double-output shaft motor are correspondingly distributed with the mounting seat.

[0012] In this technical solution, the connector is composed of a spline shaft, a fixed shaft and a sleeve. The sleeve is fixedly connected to one end of the worm. The spline shaft is fixedly connected to one end of the drive shaft. A fixed shaft is fixedly connected to the other side of the spline shaft. A number of uniformly distributed protrusions are provided on the edge of the spline shaft. A plurality of transmission blocks are provided on the edge of the fixed shaft. The spline shaft and the fixed shaft are both located inside the sleeve. A number of uniformly distributed limiting blocks are provided on the inner wall of the sleeve. The number of the limiting blocks is the same as that of the transmission blocks, and the limiting blocks are staggered between the transmission blocks.

[0013] In this technical solution, the edge of the sleeve is inserted through by a number of movable rods. Both ends of the movable rods are fixedly connected with a dial block and a connecting plate respectively. The connecting plate is connected to the outer wall of the sleeve through a first spring, and the first spring is sleeved on the surface of the movable rod. The dial block is of an arc structure and contacts the surface of the protrusion. A pulley is rotatably connected to the end of the movable rod located outside the sleeve.

[0014] In this technical solution, the drive structure is composed of a transmission shaft and a transmission lead screw. The transmission shaft is rotatably connected to the inside of the first installation cavity and the second installation cavity respectively. A driven gear and a worm gear are fixedly connected to both ends of the transmission shaft respectively. The worm gear is meshed with the worm, and a ratchet wheel is fixedly connected to the side wall of the worm gear. The diameter of the ratchet wheel is smaller than that of the worm gear. A guide seat is fixedly connected to the inner wall of one side of the transmission device installation cavity. The surface of the guide seat is rotatably connected with a gear sleeve, and the gear sleeve is meshed with the driven gear. A thread is provided inside the gear sleeve, and the inside of the gear sleeve is threadedly sleeved with the transmission lead screw. The transmission lead screw is inserted through the side wall of the transmission device installation cavity.

[0015] In this technical solution, a stabilizing rod is fixedly connected to the inner wall of the transmission device installation cavity. One end of the transmission lead screw extends into the friction plate installation outer cavity, and the other end of the transmission lead screw is slidably sleeved on the surface of the stabilizing rod. The stabilizing rod is of a square structure to prevent the transmission lead screw from rotating. The brake friction steel sheets and the brake friction plates in the friction plate installation outer cavity are staggered.

[0016] In this technical solution, the locking mechanism is composed of a pawl and a fixed block. The pawl is rotatably connected to the side wall of the transmission device installation cavity. The other end of the pawl is clamped with the ratchet wheel. The fixed block is located below the pawl and is fixedly connected to the side wall of the transmission device installation cavity. The fixed block is connected to the pawl through a second spring, and the pawl is inclined and arranged below the connector.

[0017] In this technical solution, the transmission device installation cavity is inserted through the push rod. The bottom end of the push rod contacts the ratchet pawl. The top end of the push rod is fixedly connected with an arc plate. The arc plate is correspondingly arranged below the bushing, and the surface of the arc plate contacts the pulley.

[0018] On the basis of conforming to the common knowledge in the art, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred examples of the present invention.

[0019] The positive and progressive effects of the present invention are as follows:

[0020] The proposed mine vehicle safety transportation guarantee system drives double worm gears and worm wheels through an explosion-proof double-output shaft motor, and drives a transmission lead screw mechanism, realizing functions of rapid driving and parking braking, rapid stopping and stable stopping. By using the structural form of double worm gears and worm wheels and the transmission lead screw, smooth braking and uniform braking of wet braking are realized. When parking, the parking braking function is easily realized through the self-locking of the mechanical structure without consuming the motor power. At the same time, during the self-locking process, the cooperation of the ratchet and pawl is used to achieve further braking, relieving the load borne during the self-locking of the worm gear and worm wheel. While greatly improving the braking stability, it can also avoid the problem of excessive wear of the components of the mechanical transmission structure, and can quickly achieve separation after braking, ensuring the convenience of driving and braking. The design of this device greatly improves the response speed of the braking of mine vehicles, makes the braking force control more accurate, realizes the complete linearization of the chassis, and provides a powerful technical carrier for the intelligence and electrification of mines. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the installation position of the present invention.

[0022] Figure 2 It is a schematic three-dimensional structural diagram of the whole of the present invention.

[0023] Figure 3 It is a schematic internal structural diagram of the transmission device installation cavity of the present invention.

[0024] Figure 4 For the present invention Figure 3 Partial enlarged structural schematic diagram at A in

[0025] Figure 5 It is a schematic internal structural diagram of the second installation cavity of the present invention.

[0026] Figure 6 It is a schematic three-dimensional structural diagram of the ratchet of the present invention.

[0027] Figure 7 It is a schematic external structural diagram of the transmission device installation cavity of the present invention.

[0028] Figure 8 This is a front internal view structure schematic diagram of the connector of the present invention.

[0029] Figure 9 This is a half-section structure schematic diagram of the connector of the present invention.

[0030] Figure 10 This is an internal structure schematic diagram of the outer cavity for installing the friction plate of the present invention.

[0031] Figure 11 This is a partial structure schematic diagram of the outer cavity for installing the friction plate of the present invention.

[0032] Explanation of reference numerals

[0033] 1. Half-axis bearing seat; 2. Outer cavity for installing friction plate; 3. Brake device heat dissipation oil inlet; 4. Friction plate connection platform; 5. Transmission device connection platform; 6. First installation cavity; 7. Transmission device installation cavity; 8. Half-axis hole; 9. Second installation cavity; 10. Explosion-proof double-output shaft motor; 11. Mounting seat; 12. Outer cavity connection platform; 13. Mounting hole; 14. Driving shaft; 1401. Spline shaft; 1402. Protrusion; 1403. Fixed shaft; 1404. Transmission block; 15. Worm; 1501. Sleeve; 1502. Limiting block; 1503. Movable rod; 1504. Pusher block; 1505. Pulley; 1506. Connecting plate; 1507. First spring; 16. Push rod; 17. Arc plate; 18. Fixed block; 19. Pawl; 20. Second spring; 21. Transmission shaft; 22. Worm gear; 23. Driven gear; 24. Ratchet; 25. Stabilizing rod; 26. Transmission lead screw; 27. Guide seat; 28. Gear sleeve; 29. Wheel shaft; 30. Brake friction steel sheet; 31. Brake friction plate. Detailed implementation manners

[0034] The present invention will be further described below by way of examples, but the present invention is not limited to the scope of the described examples.

[0035] As Figures 1-11 shown, the described mine vehicle safety transportation guarantee system includes:

[0036] A half-shaft bearing seat 1, the half-shaft bearing seat 1 is installed under the frame of the mine vehicle, one end of the half-shaft bearing seat 1 is fixedly connected with a friction plate installation outer cavity, the friction plate installation outer cavity 2 is fixedly connected with the transmission device installation cavity 7 through a friction plate connecting platform 4 and a transmission device connecting platform 5, and the top of the transmission device installation cavity 7 is respectively provided with a first installation cavity 6 and a second installation cavity 9, the top of the first installation cavity 6 and the second installation cavity 9 are both fixedly connected with a mounting seat 11, and the mounting seat 11 is rotatably connected with a worm 15, the worm 15 is connected to the transmission screw 26 through a driving structure, and the transmission screw passes through the first installation cavity 6 and the second installation cavity 9 respectively and extends to the inside of the friction plate installation outer cavity;

[0037] An explosion-proof dual-output shaft motor 10 is fixedly mounted to the top of the transmission device mounting cavity 7 and is located between the first mounting cavity 6 and the second mounting cavity 9. The output end of the explosion-proof dual-output shaft motor 10 is fixedly connected to a drive shaft 14, and the drive shaft 14 is connected to a worm 15 through a connector. A locking mechanism is movably connected to the inner wall of the transmission device mounting cavity 7, and the locking mechanism is connected to a ratchet 24 on the drive structure.

[0038] An outer cavity connecting platform 12 is provided between the half-shaft bearing seat 1 and the friction plate mounting outer cavity 2, and a plurality of evenly distributed mounting holes 13 are opened on the edge of the outer cavity connecting platform 12. The outer cavity connecting platform 12 is fixedly connected to the friction plate mounting outer cavity 2 through bolts in the mounting holes 13. A brake device heat dissipation oil inlet 3 is fixedly connected to the top of the friction plate mounting outer cavity 2. A plurality of evenly distributed brake friction steel plates 30 and brake friction plates 31 are provided in the friction plate mounting outer cavity 2, and the brake device heat dissipation oil inlet 3 and the friction plate The interior of the outer mounting cavity 2 is connected; the friction plate mounting outer cavity 2 and the transmission device mounting cavity 7 are both provided with mutually connected half-axle holes 8, a wheel axle 29 is arranged in the half-axle hole 8, and the wheel axle 29 is penetrated and plugged with the friction plate mounting outer cavity 2 and the transmission device mounting cavity 7, a plurality of brake friction steel plates 30 and brake friction plates 31 are arranged on the surface of the wheel axle 29, the inner ring of the brake friction steel plate 30 is provided with convex teeth and is slidably engaged with the wheel axle 29, and the outer ring of the brake friction plate 31 is provided with convex teeth and is slidably engaged with the inner wall of the friction plate mounting outer cavity 2.

[0039] In the present technical solution, the half-shaft bearing seat 1 is connected to the friction plate mounting outer cavity 2 and reinforced by the outer cavity connecting platform 12. The half-shaft hole 8 is used for the wheel axle 29 to pass through, so that the brake friction steel plate 30 on the wheel axle 29 is located in the friction plate mounting outer cavity 2. At the same time, the heat dissipation oil inlet 3 of the brake device is used to add lubricating oil to achieve wet braking and ensure heat dissipation, and the brake friction plate 31 is embedded in the friction plate mounting outer cavity 2. The brake friction plate 31 and the friction plate mounting outer cavity 2 remain stationary, and the wheel axle 29 drives the brake friction steel plate 30 to rotate synchronously.

[0040] Specifically, when the mine vehicle is under service braking, the electro-mechanical wet braking system receives a braking signal from the driver or the active safety system. After receiving the braking signal, the explosion-proof double-output shaft motor 10 outputs motor torque. When braking force is applied, multiple brake friction plates 31 move within the friction plate mounting outer cavity 2 and squeeze the brake friction steel plates 30 to achieve braking.

[0041] The transmission device mounting cavity 7 is fixedly connected to the first mounting cavity 6 and the second mounting cavity 9 respectively. The first mounting cavity 6 and the second mounting cavity 9 are symmetrically arranged on both sides of the transmission device mounting cavity 7. There are gaps for connector installation formed between the two ends of the explosion-proof double-output shaft motor 10 and the first mounting cavity 6 and the second mounting cavity 9 respectively, and both ends of the explosion-proof double-output shaft motor 10 are correspondingly distributed with the mounting seats 11; The connector is composed of a spline shaft 1401, a fixed shaft 1403 and a bushing 1501. The bushing 1501 is fixedly connected to one end of the worm 15. The spline shaft 1401 is fixedly connected to one end of the drive shaft 14. The other side of the spline shaft 1401 is fixedly connected with the fixed shaft 1403. A number of uniformly distributed protrusions 1402 are provided on the edge of the spline shaft 1401. A number of transmission blocks 1404 are provided on the edge of the fixed shaft 1403. The spline shaft 1401 and the fixed shaft 1403 are both located inside the bushing 1501. A number of uniformly distributed limiting blocks 1502 are provided on the inner wall of the bushing 1501. The number of the limiting blocks 1502 is the same as that of the transmission blocks 1404, and the limiting blocks 1502 are staggered between the transmission blocks 1404; The edge of the bushing 1501 is inserted through and connected with a number of movable rods 1503. Both ends of the movable rod 1503 are fixedly connected with a dial block 1504 and a connecting plate 1506 respectively. The connecting plate 1506 is connected to the outer wall of the bushing 1501 through a first spring 1507, and the first spring 1507 is sleeved on the surface of the movable rod 1503. The dial block 1504 is of an arc-shaped structure and contacts the surface of the protrusion 1402. A pulley 1505 is rotatably connected to the end of the movable rod 1503 located outside the bushing 1501.

[0042] In this technical solution, both the first installation cavity 6 and the second installation cavity 9 are used for the installation of the transmission shaft 21. When the explosion-proof double-output shaft motor 10 works, the driving shaft 14 drives the spline shaft 1401 and the fixed shaft 1403 to rotate synchronously. The transmission block 1404 on the upper edge of the fixed shaft 1403 abuts against the limiting block 1502 and drives the sleeve 1501 to rotate synchronously, thereby driving the worm 15 to rotate. As shown in the figure, the driving shaft 14 rotates clockwise, driving the sleeve 1501 to rotate synchronously. At this time, the first spring 1507 in the compressed state pulls the pulley 1505 away from the arc-shaped rod, and the elasticity of the second spring 20 pushes the pawl 19 to always contact the ratchet wheel 24. When braking, the rotation of the ratchet wheel 24 will not be restricted by the pawl 19. After braking is completed, the pawl 19 and the ratchet wheel 24 are locked with each other to achieve one-way limiting. At this time, the limiting force between the ratchet wheel 24 and the pawl 19 is used to further ensure stability, avoid structural deviation between the worm wheel 22 and the worm 15 resulting in reduced braking force, relieve the stress between the worm wheel 22 and the worm 15, solve the pressure on the worm wheel 22 and the worm 15 as stress-bearing components, improve the stability during linear braking, and ensure the service life and safety of the entire protection system.

[0043] Further, when releasing the brake, the explosion-proof double-output shaft motor 10 drives the driving shaft 14 to reverse. At this time, during the process that the transmission block 1404 rotates without contacting the limiting block 1502, the spline shaft 1401 drives the protrusion 1402 to slide on the dial block 1504, and uses the arc-shaped dial block 1504 to drive the movable rod 1503 to move downward. The movable rod 1503 drives the pulley 1505 to contact the arc-shaped plate 17 and push the push rod 16 downward. The push rod 16 contacts the pawl 19 and separates it from the ratchet wheel 24. When the transmission rod reverses and contacts the limiting block 1502 on the other side, at this time, the pulley 1505 always contacts the arc-shaped rod, thereby realizing the separation between the pawl 19 and the ratchet wheel 24 during the transmission process and preventing the problem of unable to release the brake. Similarly, when braking continues, the protrusion 1402 separates from the dial block 1504, and the elasticity of the first spring 1507 drives the pulley 1505 to reset, so that the second spring 20 on the fixed block 18 pushes the pawl 19 to continue to contact the ratchet wheel 24, facilitating the subsequent restriction of the ratchet wheel 24 after braking ends.

[0044] The driving structure is composed of a transmission shaft 21 and a transmission lead screw 26. The transmission shaft 21 is respectively rotationally connected to the inside of the first installation cavity 6 and the second installation cavity 9. Driven gears 23 and worm wheels 22 are respectively fixedly connected to both ends of the transmission shaft 21. The worm wheel 22 is meshed and connected with a worm 15, and a ratchet wheel 24 is fixedly connected to the side wall of the worm wheel 22. The diameter of the ratchet wheel 24 is smaller than that of the worm wheel 22. A guide seat 27 is fixedly connected to the inner wall of one side of the transmission device installation cavity 7. The surface of the guide seat 27 is rotationally connected with a gear sleeve 28, and the gear sleeve 28 is meshed and connected with the driven gear 23. Threads are provided inside the gear sleeve 28, and the inside of the gear sleeve 28 is threadedly sleeved with the transmission lead screw 26. The transmission lead screw 26 is inserted through and connected to the side wall of the transmission device installation cavity 7; A stabilizing rod 25 is fixedly connected to the inner wall of the transmission device installation cavity 7. One end of the transmission lead screw 26 extends into the brake friction plate installation outer cavity 2, and the other end of the transmission lead screw 26 is slidably sleeved on the surface of the stabilizing rod 25. The stabilizing rod 25 is of a square structure to prevent the transmission lead screw 26 from rotating. The brake friction steel plates 30 and the brake friction plates 31 inside the brake friction plate installation outer cavity 2 are distributed alternately.

[0045] In this technical solution, when the worm 15 rotates in the mounting seat 11 during braking, the worm wheel 22 drives the transmission shaft 21 to rotate synchronously, so that the transmission shaft 21 drives the driven gear 23 to rotate synchronously. At this time, the driven gear 23 drives the gear sleeve 28 to rotate on the guide seat 27. Also, because the gear sleeve 28 is meshed with the transmission lead screw 26, and the transmission lead screw 26 is guided by the stabilizing rod 25 while preventing the transmission lead screw 26 from rotating relatively. Furthermore, when the gear sleeve 28 rotates, it drives the transmission lead screw 26 to translate. When one end of the transmission lead screw enters the brake friction plate installation outer cavity 2, it abuts against the brake friction plate 31, and makes multiple brake friction plates 31 and brake friction steel plates 30 press against each other, and the formed frictional force realizes braking.

[0046] The locking mechanism is composed of a pawl 19 and a fixing block 18. The pawl 19 is rotationally connected to the side wall of the transmission device installation cavity 7. The other end of the pawl 19 is clamped with the ratchet wheel 24. The fixing block 18 is located below the pawl 19 and is fixedly connected to the side wall of the transmission device installation cavity 7. The fixing block 18 is connected to the pawl 19 through a second spring 20, and the pawl 19 is inclined and arranged below the connector; The transmission device installation cavity 7 is inserted through and connected with a push rod 16. The bottom end of the push rod 16 contacts the pawl 19. An arc-shaped plate 17 is fixedly connected to the top end of the push rod 16. The arc-shaped plate 17 is correspondingly arranged below the shaft sleeve 1501, and the surface of the arc-shaped plate 17 contacts the pulley 1505.

[0047] In this technical solution, the forward rotation of the connector can ensure the continuous rotation of the ratchet wheel 24. When the connector rotates in reverse, it can push the pawl 19 to separate from the ratchet wheel 24 and then drive the worm 15 to rotate, thus not affecting braking and driving problems. By restricting the ratchet wheel 24, the limit of the transmission shaft 21 is realized. When the reaction force generated during braking is transmitted to the transmission shaft 21, the transmission shaft 21 is restricted by the ratchet wheel 24 and the pawl 19, which can further improve the braking performance.

[0048] The present invention is not limited to the above embodiments. No matter what changes are made in its shape or structure, they all fall within the protection scope of the present invention. The protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A mine vehicle safety transportation guarantee system, characterized in that, include: A half-axle bearing seat (1), wherein the half-axle bearing seat (1) is installed under the frame of a mine vehicle, one end of the half-axle bearing seat (1) is fixedly connected to a friction plate installation outer cavity, the friction plate installation outer cavity (2) is fixedly connected to a transmission device installation cavity (7) through a friction plate connecting platform (4) and a transmission device connecting platform (5), and a first installation cavity (6) and a second installation cavity (9) are respectively provided on both sides of the top of the transmission device installation cavity (7), the top of the first installation cavity (6) and the top of the second installation cavity (9) are both fixedly connected to a mounting seat (11), and a worm (15) is rotatably connected inside the mounting seat (11), the worm (15) is connected to a transmission screw (26) through a driving structure, and the transmission screw passes through the first installation cavity (6) and the second installation cavity (9) and extends to the inside of the friction plate installation outer cavity; An explosion-proof dual-output shaft motor (10) is fixedly mounted on the top of a transmission device mounting cavity (7) and is located between a first mounting cavity (6) and a second mounting cavity (9); a drive shaft (14) is fixedly connected to the output end of the explosion-proof dual-output shaft motor (10), and the drive shaft (14) is connected to a worm (15) via a connector; a locking mechanism is movably connected to the inner wall of the transmission device mounting cavity (7), and the locking mechanism is connected to a ratchet (24) on a driving structure.

2. The mine vehicle safety transportation guarantee system according to claim 1, characterized in that: An outer cavity connecting platform (12) is provided between the half-shaft bearing seat (1) and the friction plate mounting outer cavity (2), and a plurality of evenly distributed mounting holes (13) are provided at the edge of the outer cavity connecting platform (12). The outer cavity connecting platform (12) is fixedly connected to the friction plate mounting outer cavity (2) via bolts in the mounting holes (13). A brake device heat dissipation oil inlet (3) is fixedly connected to the top of the friction plate mounting outer cavity (2), and a plurality of evenly distributed brake friction steel plates (30) and brake friction plates (31) are provided in the friction plate mounting outer cavity (2), and the brake device heat dissipation oil inlet (3) is connected to the inside of the friction plate mounting outer cavity (2).

3. The mine vehicle safety transportation guarantee system according to claim 1, characterized in that: The friction plate mounting outer cavity (2) and the transmission device mounting cavity (7) are both provided with semi-axle holes (8) that are interconnected, a wheel axle (29) is arranged in the semi-axle hole (8), and the wheel axle (29) is inserted through the friction plate mounting outer cavity (2) and the transmission device mounting cavity (7), a plurality of brake friction steel plates (30) and brake friction plates (31) are arranged on the surface of the wheel axle (29), the inner ring of the brake friction steel plate (30) is provided with convex teeth and is slidably engaged with the wheel axle (29), and the outer ring of the brake friction plate (31) is provided with convex teeth and is slidably engaged with the inner wall of the friction plate mounting outer cavity (2).

4. The mine vehicle safety transportation guarantee system according to claim 1, wherein: The transmission device installation cavity (7) is fixedly connected to the first installation cavity (6) and the second installation cavity (9) respectively. The first installation cavity (6) and the second installation cavity (9) are symmetrically arranged on both sides of the transmission device installation cavity (7). There is a gap for connector installation formed between both ends of the explosion-proof double-output shaft motor (10) and the first installation cavity (6) and the second installation cavity (9) respectively, and both ends of the explosion-proof double-output shaft motor (10) are correspondingly distributed with the mounting seat (11).

5. The mine vehicle safety transportation guarantee system according to claim 1, characterized in that: The connector consists of a spline shaft (1401), a fixed shaft (1403) and a bushing (1501). The bushing (1501) is fixedly connected to one end of the worm (15). The spline shaft (1401) is fixedly connected to one end of the drive shaft (14). A fixed shaft (1403) is fixedly connected to the other side of the spline shaft (1401). A number of uniformly distributed protrusions (1402) are provided on the edge of the spline shaft (1401). A number of transmission blocks (1404) are provided on the edge of the fixed shaft (1403). The spline shaft (1401) and the fixed shaft (1403) are both located inside the bushing (1501). A number of uniformly distributed limit blocks (1502) are provided on the inner wall of the bushing (1501). The number of the limit blocks (1502) is the same as that of the transmission blocks (1404), and the limit blocks (1502) are staggeredly arranged between the transmission blocks (1404).

6. The mine vehicle safety transportation guarantee system according to claim 5, characterized in that: A number of movable rods (1503) are inserted through the edge of the bushing (1501). A dial block (1504) and a connecting plate (1506) are fixedly connected to both ends of the movable rod (1503) respectively. The connecting plate (1506) is connected to the outer wall of the bushing (1501) through a first spring (1507), and the first spring (1507) is sleeved on the surface of the movable rod (1503). The dial block (1504) is of an arc structure and contacts the surface of the protrusion (1402). A pulley (1505) is rotatably connected to the end of the movable rod (1503) located outside the bushing (1501).

7. The mine vehicle safety transportation guarantee system according to claim 1, characterized in that: The drive structure consists of a transmission shaft (21) and a transmission lead screw (26). The transmission shaft (21) is rotatably connected to the inside of the first installation cavity (6) and the second installation cavity (9) respectively. A driven gear (23) and a worm gear (22) are fixedly connected to both ends of the transmission shaft (21) respectively. The worm gear (22) is meshed with the worm (15), and a ratchet wheel (24) is fixedly connected to the side wall of the worm gear (22). The diameter of the ratchet wheel (24) is smaller than that of the worm gear (22). A guide seat (27) is fixedly connected to the inner wall of one side of the transmission device installation cavity (7). The surface of the guide seat (27) is rotatably connected to a gear sleeve (28), and the gear sleeve (28) is meshed with the driven gear (23). The inside of the gear sleeve (28) is provided with a thread, and the inside of the gear sleeve (28) is threadedly sleeved with the transmission lead screw (26). The transmission lead screw (26) is inserted through the side wall of the transmission device installation cavity (7).

8. The mine vehicle safety transportation guarantee system according to claim 7, characterized in that: The inner wall of the transmission device installation cavity (7) is fixedly connected with a stabilizing rod (25). One end of the transmission lead screw (26) extends into the inner cavity of the friction plate installation outer cavity (2), and the other end of the transmission lead screw (26) is slidably sleeved on the surface of the stabilizing rod (25). The stabilizing rod (25) has a square structure to prevent the transmission lead screw (26) from rotating. The braking friction steel sheets (30) and the braking friction plates (31) in the inner cavity of the friction plate installation outer cavity (2) are distributed alternately.

9. The mine vehicle safety transportation guarantee system according to claim 1, characterized in that: The locking mechanism is composed of a pawl (19) and a fixed block (18). The pawl (19) is rotatably connected to the side wall of the transmission device installation cavity (7). The other end of the pawl (19) is engaged with a ratchet wheel (24). The fixed block (18) is located below the pawl (19) and is fixedly connected to the side wall of the transmission device installation cavity (7). The fixed block (18) is connected to the pawl (19) through a second spring (20), and the pawl (19) is inclined and arranged below the connector.

10. The mine vehicle safety transportation guarantee system according to claim 9, characterized in that: The transmission device installation cavity (7) is penetrated and inserted by a push rod (16). The bottom end of the push rod (16) contacts the pawl (19). The top end of the push rod (16) is fixedly connected with an arc-shaped plate (17). The arc-shaped plate (17) is correspondingly arranged below the bushing (1501), and the surface of the arc-shaped plate (17) contacts the pulley (1505).

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