Rear axle of an explosion-proof diesel engine trackless rubber-tyred vehicle for coal mines

Abstract

This invention belongs to the field of vehicle rear axle technology, specifically a rear axle for a trackless rubber-tired vehicle with an explosion-proof diesel engine used in coal mines. It includes a rear axle body, with axle heads mounted at both ends. Half-shaft assemblies are fixedly mounted on the side walls of the axle heads, and brake drums are fixedly mounted on the half-shaft assemblies. A main reducer assembly is mounted in the middle of the rear axle body. Fixed seats are fixedly mounted on both sides of the top of the rear axle body, and shock-absorbing devices are correspondingly mounted on the top of the fixed seats. By setting up shock-absorbing devices, the radial impact force on the rear axle during vehicle operation can be significantly reduced, effectively preventing damage and failure of the rear axle. Anti-collision devices are symmetrically arranged on both sides of the main reducer assembly. An adjustment mechanism is provided on one side of the anti-collision device, and the adjustment mechanism is connected to the anti-collision device via a drive shaft. The adjustment mechanism enables multi-angle adjustment of the anti-collision device, effectively protecting its critical components and extending its service life when the rear axle is impacted during operation.

Description

Technical Field

[0001] This invention belongs to the field of vehicle rear axle technology, specifically a rear axle for a trackless rubber-tired vehicle with an explosion-proof diesel engine used in coal mines. Background Technology

[0002] The explosion-proof diesel-powered trackless rubber-tired vehicle for coal mines is a trackless transport device specifically designed for the explosive gas environment of underground coal mines. Its core function is to safely and efficiently transport materials, equipment, or personnel in mine roadways containing hazardous gases such as methane and coal dust. This equipment uses an explosion-proof diesel engine as its power source, driving the vehicle through a mechanical or hydraulic transmission system, and is equipped with multiple safety protection devices to ensure stable operation in the complex and dangerous underground environment.

[0003] The rear axle, a key transmission component of trackless rubber-tired vehicles powered by explosion-proof diesel engines used in coal mines, is a critical component in current technology. As the main load-bearing part of the chassis, it is subjected to significant radial impact when encountering uneven road surfaces or severe shaking. Due to the lack of shock absorption devices, this easily leads to rear axle damage and failure, creating safety hazards. Furthermore, the complex working environment of these vehicles, coupled with the rear axle's proximity to the work surface and its role as a core component of power transmission and steering, makes it highly susceptible to collisions with obstacles, further increasing safety risks. This not only increases the frequency of rear axle maintenance but also significantly shortens its service life. Therefore, there is an urgent need to design a new rear axle for trackless rubber-tired vehicles powered by explosion-proof diesel engines used in coal mines to address these issues. Summary of the Invention

[0004] This invention provides a rear axle for a trackless rubber-tired vehicle with an explosion-proof diesel engine used in coal mines. It addresses at least one of the technical problems mentioned above: when vehicles encounter uneven road surfaces or severe shaking, the rear axle is often subjected to enormous radial impact forces. Due to the lack of shock absorption devices, this easily leads to damage and failure of the rear axle, creating safety hazards. Furthermore, the vehicle's working environment is often complex, and the rear axle is close to the working ground, making it prone to collisions with obstacles that damage critical components, thus increasing safety risks. Additionally, this invention not only increases the frequency of rear axle maintenance but also significantly shortens its service life.

[0005] To solve the above-mentioned technical problems, the present invention discloses a rear axle for a trackless rubber-tired vehicle with an explosion-proof diesel engine for coal mines, comprising a rear axle body, axle heads installed at both ends of the rear axle body, a half-shaft assembly fixedly installed on the side wall of the axle head, a brake drum fixedly installed on the half-shaft assembly, a main reducer assembly installed in the middle of the rear axle body, and fixed seats fixedly installed on both sides of the top of the rear axle body, with shock-absorbing devices correspondingly installed on the top of the fixed seats. The top of the shock-absorbing devices is fixedly connected to the bottom of the vehicle body. Anti-collision devices are symmetrically arranged on both sides of the main reducer assembly, and the anti-collision devices are fixedly installed on the rear axle body through mounting bases. An adjustment mechanism is provided on one side of the anti-collision device, and the adjustment mechanism is connected to the anti-collision device through a drive shaft.

[0006] Preferably, a plurality of oil pipe supports are fixedly installed at intervals on the outer side wall of the rear axle body, and steel leaf spring seats are fixedly installed on both sides of the bottom of the rear axle body.

[0007] Preferably, the shock absorption device includes two shock absorption mechanisms, and the two shock absorption mechanisms are symmetrically installed on the top of the fixed base at a distance from each other;

[0008] The shock absorption mechanism includes a first mounting plate, the bottom of which is fixedly connected to the top of the fixed base. Primary shock absorption components are symmetrically arranged on both sides of the first mounting plate. A second mounting plate is connected to the first mounting plate through the primary shock absorption components, and the two ends of the secondary shock absorption components are fixedly connected to the top of the first mounting plate and the bottom of the second mounting plate, respectively. Several connecting seats are fixedly installed on both sides of the top of the second mounting plate, and the primary shock absorption components are respectively connected to the secondary shock absorption components.

[0009] Preferably, the primary shock absorption assembly includes a fixed plate, with connecting frames symmetrically hinged to both sides of the fixed plate. One side of each of the two connecting frames is respectively hinged to the top of the first mounting plate and the bottom of the second mounting plate via a first hinge block. One end of a guide rod is fixedly mounted on the side wall of the fixed plate, and a spring is sleeved on the guide rod. One end of the guide rod slides through the side wall of the first sliding sleeve, and one end of the guide rod is slidably connected to the inner wall of the first sliding sleeve.

[0010] Preferably, the secondary damping assembly includes a housing, with one end of each of the two first sliding sleeves slidingly penetrating through the two side walls of the housing, and each side wall of one end of the two first sliding sleeves is hinged to a connecting rod via a second hinge block. One end of each of the two support rods is fixedly installed in the middle of the first mounting plate and the second mounting plate, and one side of each of the two support rods slides through the side wall of the housing and is hinged to the other end of the connecting rod. Both sides of the guide plate are fixedly installed on the inner wall of the housing, and one end of each of the two guide rods (two second and three) is fixedly installed at the other end of the two support rods, and the other ends of the two guide rods (two second and three) slide through the guide plate. A plurality of springs (two second) are respectively sleeved on the guide rods (two second and three).

[0011] Preferably, the anti-collision device includes a third mounting plate, on the top of which two connecting components are symmetrically arranged. A buffer component is connected to one side of each connecting component, and an anti-collision component is installed on one side of each buffer component. A plurality of fixing blocks are fixedly installed at intervals on the bottom of the third mounting plate. The drive shaft is fixedly connected to the plurality of fixing blocks, and one end of the drive shaft is rotatably connected to the inner wall of the mounting base, while the other end of the drive shaft rotatably passes through the side wall of the mounting base.

[0012] Preferably, the connecting assembly includes a second sliding sleeve, the side wall of which is hinged to the top of the third mounting plate, one end of two gas springs is hinged to the top of the third mounting plate via a third hinge block, and the other ends of the two gas springs are respectively hinged to the side wall of the second sliding sleeve. One end of the first sliding rod slides through the side wall of the second sliding sleeve and is fixedly connected to a third spring, one end of which is fixedly connected to the inner side wall of the second sliding sleeve.

[0013] Preferably, the buffer assembly includes a housing two. The other ends of two first sliding rods slide through the side wall of the housing two and are respectively fixedly connected to second sliding rods. A first wedge block is fixedly installed on each of the two second sliding rods. A plurality of second wedge blocks are symmetrically slidably connected to the inner wall of the housing two in pairs at intervals. Each group of second wedge blocks is slidably connected to the side wall of the first wedge block. A spring four is fixedly connected between two adjacent groups of second wedge blocks. The side wall of each group of second wedge blocks is fixedly connected to the inner wall of the housing two through a spring five. Two guide rails are fixedly installed on the inner side wall of the housing two. Each side wall of a plurality of second wedge blocks is embedded with a sliding groove. The plurality of sliding grooves are slidably connected to the two guide rails.

[0014] Preferably, the anti-collision assembly includes a mounting base, with the other end of the second slide rod sliding through the side wall of the second housing and fixedly connected to the mounting base. A guide post is fixedly installed on the outer side wall of the second housing, and one end of the guide post slides through the middle of the mounting base. Several springs are respectively sleeved on the second slide rod, and the two ends of the springs are respectively fixedly connected to the mounting base and the side wall of the second housing. Two anti-collision guard plates are respectively hinged to the two sides of the mounting base.

[0015] Preferably, the adjustment mechanism includes an auxiliary box, the top of which is fixedly mounted on the side wall of the rear axle body, a forward and reverse drive motor is fixedly mounted on the inner wall of the auxiliary box, a mounting block is fixedly mounted on the bottom of the auxiliary box, a cam is rotatably connected to the side wall of the mounting block via a rotating shaft, the output end of the forward and reverse drive motor is fixedly connected to one end of the rotating shaft, a gear is rotatably connected to one side of the top of the mounting block via a rotating shaft, one side of the bottom of a connecting plate is hinged to the top of the mounting block, a roller is rotatably connected to the other side of the bottom of the connecting plate and the roller contacts the cam, a top block is hinged to the top of the connecting plate, and a locking block on one side wall of the connecting plate and the top block contact the gear, the other side of the connecting plate is fixedly connected to the inner wall of the auxiliary box via a spring, and one end of the rotating shaft rotatably passes through the side wall of the auxiliary box and is fixedly connected to the drive shaft.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The rear axle of the trackless rubber-tired vehicle with explosion-proof diesel engine for coal mines described in this invention has a shock-absorbing device mounted on the rear axle body with a fixed seat. As the main load-bearing component of the vehicle frame, the rear axle can significantly reduce the radial impact force of the vehicle on the rear axle when the trackless rubber-tired vehicle with explosion-proof diesel engine for coal mines encounters uneven road surfaces and severe shaking during operation, effectively preventing damage and failure of the rear axle, and also reducing safety hazards.

[0018] 2. The rear axle of the trackless rubber-tired vehicle with explosion-proof diesel engine for coal mines described in this invention, by symmetrically arranging anti-collision devices on both sides of the main reducer assembly, and with the adjustment mechanism cooperating with the anti-collision devices, can realize multi-angle adjustment of the anti-collision devices. When the rear axle is hit by obstacles during operation, it can effectively protect its key components, not only avoiding damage and failure of the rear axle, but also reducing the maintenance frequency of workers and greatly extending the service life of the rear axle. Attached Figure Description

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1This is a schematic diagram of the structure in this invention;

[0021] Figure 2 This is a schematic diagram of the connection between the mounting base and the rear axle body and the drive shaft in this invention;

[0022] Figure 3 This is a schematic diagram of the shock absorption mechanism in this invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the box in this invention;

[0024] Figure 5 This is a schematic diagram of the anti-collision device in this invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the first sliding sleeve in this invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the second box in this invention;

[0027] Figure 8 This is a schematic diagram of the adjustment mechanism in this invention;

[0028] Figure 9 This is a schematic diagram of the internal structure of the auxiliary box in this invention.

[0029] In the diagram: 1. Rear axle body; 2. Axle head; 3. Half-shaft assembly; 4. Brake drum; 5. Main reducer assembly; 6. Mounting seat; 7. Shock absorber; 8. Anti-collision device; 9. Mounting base; 10. Adjustment mechanism; 11. Drive shaft; 12. Oil pipe bracket; 13. Leaf spring seat; 14. Shock absorber mechanism; 15. First mounting plate; 16. Primary shock absorber assembly; 161. Mounting plate; 162. Connecting frame; 163. First hinge block; 164. Guide rod one; 165. Spring one; 166. First sliding sleeve; 17. Second mounting plate; 18. Secondary shock absorber assembly; 181. Housing one; 182. Second hinge block; 183. Connecting rod; 184. Support rod; 185. Guide plate; 186. Guide rod two; 187. Guide rod three; 188. Spring two; 19. 20. Connecting seat; 21. Third mounting plate; 22. Connecting assembly; 23. Second sliding sleeve; 24. Gas spring; 25. Third hinge block; 26. First sliding rod; 27. Spring three; 28. Buffer assembly; 29. ​​Box two; 20. Second sliding rod; 212. First wedge block; 223. Second wedge block; 224. Spring four; 225. Spring five; 226. Guide rail; 227. Slide groove; 23. Anti-collision assembly; 24. Mounting seat; 25. Guide column; 26. Spring six; 27. Anti-collision guard plate; 28. Fixing block; 29. ​​Auxiliary box; 20. Forward and reverse drive motor; 21. Mounting block; 22. Cam; 33. Rotating shaft one; 34. Gear; 35. Rotating shaft two; 36. Connecting plate; 37. Roller; 38. Top block; 39. Spring seven. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0031] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0032] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0033] The present invention provides the following embodiments. Example 1

[0034] This invention provides a rear axle for a trackless rubber-tired vehicle with an explosion-proof diesel engine used in coal mines, such as... Figure 1-Figure 2 As shown, the axle body 1 includes axle heads 2 installed at both ends of the axle head 2. A half-shaft assembly 3 is fixedly installed on the side wall of the axle head 2. A brake drum 4 is fixedly installed on the half-shaft assembly 3. A main reducer assembly 5 is installed in the middle of the axle body 1. Fixing seats 6 are fixedly installed on both sides of the top of the axle body 1. A shock absorber 7 is installed on the top of the fixing seat 6. The top of the shock absorber 7 is fixedly connected to the bottom of the vehicle body. Anti-collision devices 8 are symmetrically arranged on both sides of the main reducer assembly 5. The anti-collision devices 8 are fixedly installed on the axle body 1 through mounting bases 9. An adjustment mechanism 10 is provided on one side of the anti-collision device 8. The adjustment mechanism 10 is connected to the anti-collision device 8 through a drive shaft 11.

[0035] Preferably, a plurality of oil pipe supports 12 are fixedly installed at intervals on the outer side wall of the rear axle body 1, and steel leaf spring seats 13 are fixedly installed on both sides of the bottom of the rear axle body 1.

[0036] The working principle and beneficial effects of the above technical solution are as follows:

[0037] The aforementioned explosion-proof diesel engine trackless rubber-tired vehicle for coal mines includes a rear axle body 1. Axle heads 2 are mounted at both ends of the rear axle body 1, and a half-shaft assembly 3 is fixedly mounted on the side wall of each axle head 2. A brake drum 4 is fixedly mounted on the half-shaft assembly 3. A main reducer assembly 5 is mounted in the middle of the rear axle body 1. The rear axle body 1 is made of high-strength alloy steel through casting or welding, protecting the internal gear set and capable of withstanding the load and impact during vehicle operation. The half-shaft assembly 3 is connected to the rear axle body 1 via the axle heads 2, enabling efficient power transmission to the wheels, while simultaneously cooperating with the brake drum 4 to complete the vehicle's rotation. The rear axle is equipped with a fully enclosed wet multi-disc brake, a hydraulic dual-circuit control system, and a fail-safe braking system to ensure driving safety. At the same time, the main reducer assembly 5 installed on the rear axle body 1 can effectively reduce the speed and increase the torque, enabling the rear axle to adapt to the low-speed heavy-load working conditions underground. Several oil pipe supports 12 installed on the side wall of the rear axle body 1 facilitate the reliable fixing of the rear axle oil pipes and avoid damage caused by unstable oil pipe installation. The rear axle designed in this invention has strong load-bearing capacity and high torque output, enabling the vehicle to cope with complex working conditions such as rugged roads and steep slopes in coal mines.

[0038] The shock-absorbing device 7, mounted on the rear axle body 1 via mounting base 231, can significantly reduce the radial impact force on the rear axle during heavy-load operation of the trackless rubber-tired vehicle with explosion-proof diesel engine used in coal mines, and can effectively prevent damage and failure of the rear axle. At the same time, the anti-collision device 8 is symmetrically arranged on both sides of the main reducer assembly 5 via mounting base 9, and an adjustment mechanism 10 is provided on one side of the anti-collision device 8. The adjustment mechanism 10 is connected to the anti-collision device 8 via a drive shaft 11. Thus, the adjustment mechanism 10 realizes multi-angle adjustment of the working position of the anti-collision device 8 on the rear axle body 1. When the rear axle is hit during operation, it can effectively protect its key components, thereby effectively avoiding damage to the rear axle to different degrees after being hit, and greatly extending the service life of the rear axle. Example 2

[0039] Based on Example 1, such as Figure 1 , Figures 3-4 As shown, the shock absorption device 7 includes two shock absorption mechanisms 14, and the two shock absorption mechanisms 14 are symmetrically installed on the top of the fixed base 6 at a distance from each other;

[0040] The shock absorption mechanism 14 includes a first mounting plate 15, the bottom of which is fixedly connected to the top of the fixed base 6. Primary shock absorption components 16 are symmetrically arranged on both sides of the first mounting plate 15. A second mounting plate 17 is connected to the first mounting plate 15 through the primary shock absorption components 16. The two ends of the secondary shock absorption components 18 are fixedly connected to the top of the first mounting plate 15 and the bottom of the second mounting plate 17, respectively. A plurality of connecting seats 19 are fixedly installed on both sides of the top of the second mounting plate 17. The primary shock absorption components 16 are respectively connected to the secondary shock absorption components 18.

[0041] Preferably, the primary shock absorption assembly 16 includes a fixed plate 161, with connecting frames 162 symmetrically hinged to both sides of the fixed plate 161. One side of each of the two connecting frames 162 is respectively hinged to the top of the first mounting plate 15 and the bottom of the second mounting plate 17 via a first hinge block 163. One end of a guide rod 164 is fixedly mounted on the side wall of the fixed plate 161. A spring 165 is sleeved on the guide rod 164, and one end of the guide rod 164 slides through the side wall of the first sliding sleeve 166, and one end of the guide rod 164 is slidably connected to the inner wall of the first sliding sleeve 166.

[0042] Preferably, the secondary damping assembly 18 includes a housing 181, with one end of two first sliding sleeves 166 slidingly penetrating through the two side walls of the housing 181. Each side wall of one end of the two first sliding sleeves 166 is hinged to a connecting rod 183 via a second hinge block 182. One end of two support rods 184 is fixedly installed in the middle of the first mounting plate 15 and the second mounting plate 17, respectively. One side of each support rod 184 slides through the side wall of the housing 181 and is hinged to the other end of the connecting rod 183. Both sides of a guide plate 185 are fixedly installed on the inner wall of the housing 181. One end of each of two guide rods 186 and 187 is fixedly installed at the other end of the two support rods 184, respectively. The other ends of each guide rod 186 and 187 slide through the guide plate 185. A plurality of springs 188 are respectively sleeved on the guide rods 186 and 187.

[0043] The working principle and beneficial effects of the above technical solution are as follows:

[0044] The shock absorption mechanism 14 is fixedly installed on the rear axle body 1 by the fixing seat 6, which can effectively reduce the radial impact force on the rear axle when encountering uneven roads and potholes during heavy-load operation of the trackless rubber-tired vehicle with explosion-proof diesel engine in coal mines, and effectively avoid damage and failure of the rear axle. The top of the shock absorption mechanism 14 is provided with several connecting seats 19, which can stably connect the rear axle to the bottom of the body of the trackless rubber-tired vehicle for coal mine explosion-proof diesel engine. When the trackless rubber-tired vehicle for coal mine explosion-proof diesel engine is carrying out heavy-load operations under complex working conditions, the vehicle body will experience varying degrees of bumps due to road conditions, thus the vehicle body will exert radial impact force on the second mounting plate 17. At this time, the second mounting plate 17 drives the primary shock absorption component 16 and the secondary shock absorption component 18 set between it and the first mounting plate 15 to effectively eliminate the impact force. The connecting frame 162 hinged to the fixed plate 161 drives the guide rod 164 fixedly connected to the fixed plate 161 to retract inward along the side wall of the first sliding sleeve 166. Then, the spring 165 sleeved on the guide rod 164 is compressed. At the same time, the second mounting plate 17 and the first mounting plate 15 are fixedly installed. The two support rods 184 on the upper part retract inward along the side wall of the housing 181, and the first sliding sleeve 166 also retracts inward along the side wall of the housing 181. This allows the connecting rod 183, which is hinged to the first sliding sleeve 166, to provide outward support force to the support rods 184. Conversely, the support rods 184 also provide outward support force to the first sliding sleeve 166, thereby effectively reducing the magnitude of the impact force. Furthermore, the guide rods 186 and 187, which are set between the two support rods 184, slide along the guide plate 185 as the two support rods 184 retract inward. The spring 188, which is sleeved on the guide rods 186 and 187, further buffers the inward impact force of the support rods 184. With the cooperation of the primary damping component 16 and the secondary damping component 18, the impact force of the vehicle body on the rear axle can be effectively reduced.

[0045] The invention utilizes a shock-absorbing device 7 mounted on the rear axle body 1 via a fixed base 6. As the main load-bearing component of the vehicle frame, the rear axle can significantly reduce the radial impact force of the vehicle body on the rear axle when the trackless rubber-tired vehicle with explosion-proof diesel engine for coal mines encounters uneven road surfaces and severe shaking during operation. This effectively prevents damage and failure of the rear axle and also reduces safety hazards. Example 3

[0046] Based on Example 1 or 2, such as Figure 1-Figure 2 , Figures 5-7As shown, the anti-collision device 8 includes a third mounting plate 20. Two connecting components 21 are symmetrically arranged on the top of the third mounting plate 20. A buffer component 22 is connected to one side of the connecting component 21. An anti-collision component 23 is installed on one side of the buffer component 22. A plurality of fixing blocks 24 are fixedly installed at intervals on the bottom of the third mounting plate 20. The drive shaft 11 is fixedly connected to the plurality of fixing blocks 24. One end of the drive shaft 11 is rotatably connected to the inner wall of the mounting base 9, and the other end of the drive shaft 11 rotatably passes through the side wall of the mounting base 9.

[0047] Preferably, the connecting assembly 21 includes a second sliding sleeve 211, the sidewall of which is hinged to the top of the third mounting plate 20. One end of each of the two gas springs 212 is hinged to the top of the third mounting plate 20 via a third hinge block 213, and the other ends of the two gas springs 212 are respectively hinged to the sidewall of the second sliding sleeve 211. One end of the first sliding rod 214 slides through the sidewall of the second sliding sleeve 211 and is fixedly connected to a spring 215. One end of the spring 215 is fixedly connected to the inner sidewall of the second sliding sleeve 211.

[0048] Preferably, the buffer assembly 22 includes a housing 221. The other ends of two first sliding rods 214 slide through the side wall of the housing 221 and are respectively fixedly connected to second sliding rods 222. Each of the two second sliding rods 222 has a first wedge block 223 fixedly installed on it. A plurality of second wedge blocks 224 are symmetrically slidably connected in pairs to the inner wall of the housing 221. Each pair of second wedge blocks 224 corresponds to a first wedge block 223. The sidewalls are slidably connected, and springs 225 are fixedly connected between two adjacent sets of the second wedge blocks 224. The sidewalls of each set of the second wedge blocks 224 are fixedly connected to the inner wall of the housing 221 via springs 226. Two guide rails 227 are fixedly installed on the inner sidewalls of the housing 221. The two sidewalls of several second wedge blocks 224 are each provided with a sliding groove 228, and the sliding grooves 228 are slidably connected to the two guide rails 227.

[0049] Preferably, the anti-collision component 23 includes a mounting base 231, the other end of the second slide rod 222 slides through the side wall of the second housing 221 and is fixedly connected to the mounting base 231, the guide post 232 is fixedly installed on the outer side wall of the second housing 221, and one end of the guide post 232 slides through the middle of the mounting base 231, a plurality of springs 233 are respectively sleeved on the second slide rod 222, the two ends of the springs 233 are respectively fixedly connected to the mounting base 231 and the side wall of the second housing 221, and two anti-collision guard plates 234 are respectively hinged to the two sides of the mounting base 231.

[0050] The working principle and beneficial effects of the above technical solution are as follows:

[0051] The aforementioned anti-collision device 8, which is fixedly installed on the rear axle body 1 via the mounting base 9, can effectively prevent damage to the rear axle caused by obstacles during operation of the trackless rubber-tired vehicle with explosion-proof diesel engine for coal mines. It can also effectively protect the key components of the rear axle, reducing the damage to the key components of the rear axle in case of emergencies when the vehicle is operating under complex working conditions, thereby preventing varying degrees of damage and failure of the rear axle and causing safety hazards. The anti-collision device 8, through the anti-collision guard plate 234, when the rear axle encounters a collision during vehicle operation, the anti-collision guard plate 234 will first offset the direct damage to the rear axle caused by the obstacle. Simultaneously, after being impacted, the anti-collision guard plate 234 will cause the mounting base 231, which is hinged to it, to slide along the guide post 232. The hinged connection between the anti-collision guard plate 234 and the mounting base 231 allows the anti-collision guard plate 234 to adapt to the obstacle upon impact, further reducing the damage caused by the impact. Then, the second sliding rod 222, fixedly mounted on the side wall of the mounting base 231, will retract inward along the housing 221. At this time, the second sliding rod 222... The spring 233 on the upper part is compressed, thus providing effective cushioning for the connecting seat 19. At the same time, the second slide rod 222 drives the first wedge block 223 fixedly connected inside the housing 221 to move. Each set of second wedge blocks 224 is slidably connected to the side wall of the first wedge block 223, so that the first wedge block 223 drives the second wedge block 224 to slide to both sides along the inner wall of the housing 221. The several sliding grooves 228 embedded in the second wedge blocks 224 slide along the guide rails 227 fixedly connected to the side wall of the housing 221, preventing the second wedge blocks 224 from getting stuck during the sliding process. The impact force is then further reduced by the spring 225 located between adjacent sets of second wedge blocks 224 and the spring 226 connecting the second wedge block 224 to the inner wall of the housing 221. This provides cushioning for the second wedge block 224 in conjunction with the first wedge block 223, effectively reducing the impact force from the second slide rod 222. Subsequently, the second slide rod 222 drives the first slide rod 214 to slide outwards along the side wall of the housing 221, causing the first slide rod 214 to slide along the inner wall of the second sliding sleeve 211. The spring 215 located within the second sliding sleeve 211 provides further cushioning for the first slide rod 214, further reducing the impact force from the first slide rod 222. The impact force from the sliding rod 214 is offset, thus the impact force generated after the anti-collision guard plate 234 is hit is buffered multiple times as described above, which can greatly avoid the impact on the rear axle after the impact and provide sufficient protection for key components. At the same time, the gas spring 212 set on the side wall of the second sliding sleeve 211 can provide horizontal support for the second sliding sleeve 211 on the third mounting plate 20, and can also cooperate with the different hinge methods of the mounting base 231 and the anti-collision guard plate 234 to provide angle correction after the anti-collision guard plate 234 is hit at different angles, which greatly improves the protection range and protection capability of the anti-collision guard plate 234. Example 4

[0052] Based on Example 3, such as Figure 1-Figure 2 , Figures 8-9 As shown, the adjustment mechanism 10 includes an auxiliary box 25, the top of which is fixedly mounted on the side wall of the rear axle body 1. A forward / reverse drive motor 26 is fixedly mounted on the inner wall of the auxiliary box 25. A mounting block 27 is fixedly mounted on the bottom of the auxiliary box 25. A cam 28 is rotatably connected to the side wall of the mounting block 27 via a rotating shaft 29. The output end of the forward / reverse drive motor 26 is fixedly connected to one end of the rotating shaft 29. A gear 30 is rotatably connected to one side of the top of the mounting block 27 via a rotating shaft 31. One side of the bottom of the connecting plate 32 is hinged to the top of the mounting block 27. The other side of the bottom of the connecting plate 32 is rotatably connected to a roller 33, and the roller 33 is in contact with the cam 28. The top of the connecting plate 32 is hinged to a top block 34, and the locking block on one side wall of the connecting plate 32 and the top block 34 are in contact with the gear 30. The other side of the connecting plate 32 is fixedly connected to the inner wall of the auxiliary box 25 through a spring 7 35. One end of the rotating shaft 2 31 rotates through the side wall of the auxiliary box 25 and is fixedly connected to the transmission shaft 11.

[0053] The working principle and beneficial effects of the above technical solution are as follows:

[0054] The aforementioned adjustment mechanism 10, located on one side of the anti-collision device 8, drives the transmission shaft 11 to rotate along the mounting base 9. The transmission shaft 11 then drives the third mounting plate 20, connected via the fixed block 24, to rotate the anti-collision device 8 along the mounting base 9, thereby changing the working angle of the anti-collision device 8. This allows for adjustment of the working position of the anti-collision device 8 according to different working environments, effectively improving the protection of key rear axle components and preventing rear axle damage and failure. When the adjustment mechanism 10 needs to adjust the working position of the anti-collision device 8, it only needs to start the forward and reverse drive motor 26. The forward and reverse drive motor 26 drives the rotating shaft 29 to rotate, simultaneously causing the cam 28 fixedly connected to the rotating shaft 29 to rotate synchronously. The rotation of the cam 28 then causes the connecting plate 32, which contacts it via the roller 33, to swing along the top of the mounting block 27. This causes the hinged top block 34 on the connecting plate 32 to swing synchronously. The top block 34 meshes with the gear 30, causing the gear 30 to rotate continuously along the rotating shaft 31 at a certain angle, thereby driving the transmission shaft 11 to rotate and complete the working angle adjustment of the anti-collision device 8. The adjustment mechanism 10 is designed to ensure that the tension of the spring 35 ensures that the top block 34 on the connecting plate 32 will not get stuck on the gear 30 during repeated movements, thus affecting the drive of the gear 30 and ensuring the reliability of the adjustment mechanism 10. At the same time, the locking block on the side wall of the connecting plate 32 will also engage with the gear 30 as the top block 34 swings continuously. When the gear 30 rotates once, the locking block will engage with the tooth groove, thus locking the gear 30. This prevents the adjustment mechanism 10 from rotating and slipping when adjusting the anti-collision device 8. In addition, after the forward and reverse drive motor 26 stops working, the anti-collision device 8 can be locked and fixed in the designated working position.

[0055] The invention, through the adjustment mechanism 10 in conjunction with the anti-collision device 8, enables the anti-collision device 8 to be adjusted at multiple angles on the rear axle body 1. When the rear axle is hit by an obstacle during operation, it can effectively protect its key components in a timely manner, avoiding damage and failure of the rear axle. At the same time, it reduces the maintenance frequency of the staff and greatly extends the service life of the rear axle.

[0056] Finally, it should be noted that the above description and illustrations show the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A rear axle for a trackless rubber-tired vehicle with an explosion-proof diesel engine used in coal mines, characterized in that: The rear axle body (1) is provided with axle heads (2) installed at both ends of the rear axle body (1). A half-shaft assembly (3) is fixedly installed on the side wall of the axle head (2). A brake drum (4) is fixedly installed on the half-shaft assembly (3). A main reducer assembly (5) is installed in the middle of the rear axle body (1). Fixing seats (6) are fixedly installed on both sides of the top of the rear axle body (1). A shock absorber (7) is installed on the top of the fixing seat (6). The top of the shock absorber (7) is fixedly connected to the bottom of the vehicle body. Anti-collision devices (8) are symmetrically arranged on both sides of the main reducer assembly (5). The anti-collision devices (8) are fixedly installed on the rear axle body (1) through mounting base (9). An adjustment mechanism (10) is provided on one side of the anti-collision device (8). The adjustment mechanism (10) is connected to the anti-collision device (8) through a drive shaft (11). The adjustment mechanism (10) includes an auxiliary box (25), the top of which is fixedly mounted on the side wall of the rear axle body (1). A forward and reverse drive motor (26) is fixedly mounted on the inner wall of the auxiliary box (25). A mounting block (27) is fixedly mounted on the bottom of the auxiliary box (25). A cam (28) is rotatably connected to the side wall of the mounting block (27) via a rotating shaft (29). The output end of the forward and reverse drive motor (26) is fixedly connected to one end of the rotating shaft (29). A gear (30) is rotatably connected to one side of the top of the mounting block (27) via a rotating shaft (31). One side of the bottom of the connecting plate (32) is hinged to the top of the mounting block (27). The other side of the bottom of the connecting plate (32) is rotatably connected to a roller (33), and the roller (33) is in contact with the cam (28). The top of the connecting plate (32) is hinged to a top block (34), and the locking block on one side wall of the connecting plate (32) and the top block (34) are in contact with the gear (30). The other side of the connecting plate (32) is fixedly connected to the inner wall of the auxiliary box (25) through a spring seven (35). One end of the rotating shaft two (31) rotates through the side wall of the auxiliary box (25) and is fixedly connected to the transmission shaft (11).

2. The rear axle of a trackless rubber-tired vehicle with an explosion-proof diesel engine for coal mines according to claim 1, characterized in that: Several oil pipe supports (12) are fixedly installed at intervals on the outer side wall of the rear axle body (1), and steel leaf spring seats (13) are fixedly installed on both sides of the bottom of the rear axle body (1).

3. The rear axle of a trackless rubber-tired vehicle with an explosion-proof diesel engine for coal mines according to claim 1, characterized in that: The shock absorption device (7) includes two shock absorption mechanisms (14), and the two shock absorption mechanisms (14) are symmetrically installed on the top of the fixed base (6) at a distance from each other; The shock absorption mechanism (14) includes a first mounting plate (15), the bottom of which is fixedly connected to the top of the fixed base (6). A primary shock absorption assembly (16) is symmetrically arranged on both sides of the first mounting plate (15). A second mounting plate (17) is connected to the first mounting plate (15) through the primary shock absorption assembly (16). The two ends of the secondary shock absorption assembly (18) are fixedly connected to the top of the first mounting plate (15) and the bottom of the second mounting plate (17), respectively. A plurality of connecting seats (19) are fixedly installed on both sides of the top of the second mounting plate (17). The primary shock absorption assembly (16) is connected to the secondary shock absorption assembly (18), respectively.

4. The rear axle of a trackless rubber-tired vehicle with an explosion-proof diesel engine for coal mines according to claim 3, characterized in that: The primary shock absorber assembly (16) includes a fixed plate (161), with connecting frames (162) symmetrically hinged on both sides of the fixed plate (161). One side of each of the two connecting frames (162) is respectively hinged to the top of the first mounting plate (15) and the bottom of the second mounting plate (17) via a first hinge block (163). One end of a guide rod (164) is fixedly mounted on the side wall of the fixed plate (161). A spring (165) is sleeved on the guide rod (164), and one end of the guide rod (164) slides through the side wall of the first sliding sleeve (166), and one end of the guide rod (164) is slidably connected to the inner wall of the first sliding sleeve (166).

5. The rear axle of a trackless rubber-tired vehicle with an explosion-proof diesel engine for coal mines according to claim 3, characterized in that: The secondary damping assembly (18) includes a housing (181), with one end of each of two first sliding sleeves (166) sliding through the two side walls of the housing (181). Each side wall of one end of the two first sliding sleeves (166) is hinged with a connecting rod (183) via a second hinge block (182). One end of each of two support rods (184) is fixedly installed in the middle of the first mounting plate (15) and the second mounting plate (17). One side of each support rod (184) slides through the side wall of the housing (181) and then... The guide plate (185) is hinged to the other end of the connecting rod (183). The two sides of the guide plate (185) are fixedly installed on the inner wall of the first box (181). One end of the two guide rods (186) and the guide rod (187) are fixedly installed on the other end of the two support rods (184). The other ends of the two guide rods (186) and the guide rod (187) slide through the guide plate (185). A number of springs (188) are respectively sleeved on the guide rods (186) and the guide rod (187).

6. The rear axle of a trackless rubber-tired vehicle with an explosion-proof diesel engine for coal mines according to claim 1, characterized in that: The anti-collision device (8) includes a third mounting plate (20). Two connecting components (21) are symmetrically arranged on the top of the third mounting plate (20). A buffer component (22) is connected to one side of the connecting component (21). An anti-collision component (23) is installed on one side of the buffer component (22). Several fixing blocks (24) are fixedly installed at intervals on the bottom of the third mounting plate (20). The drive shaft (11) is fixedly connected to several of the fixing blocks (24). One end of the drive shaft (11) is rotatably connected to the inner wall of the mounting base (9). The other end of the drive shaft (11) rotatably passes through the side wall of the mounting base (9).

7. The rear axle of a trackless rubber-tired vehicle with explosion-proof diesel engine for coal mines according to claim 6, characterized in that: The connecting assembly (21) includes a second sliding sleeve (211), the side wall of which is hinged to the top of the third mounting plate (20). One end of two gas springs (212) is hinged to the top of the third mounting plate (20) through a third hinge block (213), and the other end of the two gas springs (212) is respectively hinged to the side wall of the second sliding sleeve (211). One end of the first sliding rod (214) slides through the side wall of the second sliding sleeve (211) and is fixedly connected to a spring three (215). One end of the spring three (215) is fixedly connected to the inner side wall of the second sliding sleeve (211).

8. The rear axle of a trackless rubber-tired vehicle with an explosion-proof diesel engine for coal mines according to claim 6, characterized in that: The buffer assembly (22) includes a housing (221). The other ends of two first sliding rods (214) slide through the side wall of the housing (221) and are respectively fixedly connected to second sliding rods (222). A first wedge block (223) is fixedly installed on each of the two second sliding rods (222). A plurality of second wedge blocks (224) are symmetrically slidably connected in pairs to the inner wall of the housing (221). Each pair of second wedge blocks (224) corresponds to the side wall of the first wedge block (223). The sliding connection is provided, and a spring four (225) is fixedly connected between two adjacent sets of the second wedge blocks (224). The side wall of each set of the second wedge blocks (224) is fixedly connected to the inner wall of the second box (221) through a spring five (226). Two guide rails (227) are fixedly installed on the inner side wall of the second box (221). The two side walls of several second wedge blocks (224) are provided with sliding grooves (228), and several sliding grooves (228) are correspondingly slidably connected to the two guide rails (227).

9. The rear axle of a trackless rubber-tired vehicle with an explosion-proof diesel engine for coal mines according to claim 6, characterized in that: The anti-collision component (23) includes a mounting base (231), the other end of the second slide rod (222) slides through the side wall of the second box (221) and is fixedly connected to the mounting base (231), the guide post (232) is fixedly installed on the outer side wall of the second box (221), and one end of the guide post (232) slides through the middle of the mounting base (231), a plurality of springs (233) are respectively sleeved on the second slide rod (222), the two ends of the springs (233) are respectively fixedly connected to the mounting base (231) and the side wall of the second box (221), and two anti-collision guard plates (234) are respectively hinged to the two sides of the mounting base (231).

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