An unmanned snowmobile

Abstract

The application discloses an unmanned snowmobile and relates to the technical field of snowmobiles, and solves the problem that an unmanned snowmobile cannot automatically right itself after rolling over during travel, comprising a frame plate, two caterpillar wheels are arranged at the bottom of one end of the frame plate, a sled plate is arranged at the bottom of the other end of the frame plate through a shock absorber, a battery pack is arranged at the top of the frame plate, a carriage is arranged on the frame plate, lamps are arranged at both ends of the carriage, ultrasonic radars and cameras are arranged on the front side, the moving mechanism is designed to drive the threaded rod to rotate, thereby cooperating with the adjusting plate to drive the caterpillar wheels to move, and the interaction of the adjusting assembly enables the base and the carriage to move correspondingly, so that the snowmobile can move the center of gravity upward when rolling over, and the snowmobile can be automatically righted by cooperating with the righting assembly, thereby avoiding the delay of rescue after rolling over during snow rescue.

Description

Technical Field

[0001] This invention relates to the field of snowmobile technology, specifically to an unmanned snowmobile. Background Technology

[0002] Snowmobiles originated from military technology; the rubber tracks used in military off-road vehicles have been proven to withstand harsh winters. Currently, the main mature applications for snow-covered scenarios include all-terrain military tracked personnel carriers and snowmobiles with front skids and rear tracks.

[0003] Because of their excellent mobility in snow, snowmobiles are widely used in snow rescue, transportation, and medical assistance. For example, Chinese patent document CN215851436U discloses a hydrogen-powered unmanned snow rescue and delivery vehicle. Compared to manned vehicles, unmanned snowmobiles can conduct rescue operations over large areas and for extended periods in cold weather. The various sensors equipped on unmanned snowmobiles can handle the terrain in snow. However, due to the unique road conditions in snow, especially on uneven roads and slopes, the sensors struggle to assess the actual road conditions due to snow cover. This can easily lead to one track wheel being higher than the other, potentially causing rollovers. Conventional unmanned snowmobiles lose their driving function once they roll over, as their bottom tracks are significantly wider than the upper cargo box. Therefore, after a rollover, the snowmobile typically... Figure 10 As shown in state a, the snowmobile's chassis is at a certain angle to the ground, making it difficult to straighten by the snowmobile's own drive. Sending a signal to send someone to rescue it would waste time and rescue resources. Therefore, this invention proposes an unmanned snowmobile. Summary of the Invention

[0004] The purpose of this invention is to provide an unmanned snowmobile that can automatically flip back to its right side when it overturns, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an unmanned snowmobile, comprising a frame plate, two tracked wheels at one bottom of the frame plate, and a sled plate mounted at the other bottom via a shock absorber, a battery pack mounted on the top, a carriage on the frame plate, lights mounted at both ends of the carriage, an ultrasonic radar and a camera mounted on the front, a lidar and a binocular camera mounted on the top of the carriage, a photovoltaic panel and a GPS antenna mounted on the rear of the carriage, an tilt sensor mounted on the frame plate, a thermal infrared human body sensor mounted at the front of the carriage, and a base fixed to the bottom of the carriage. The frame plate has multiple movable openings, and the bottom of the base has a slidably inserted plate that engages with the movable openings. An adjustment assembly for moving the base is installed inside the frame plate.

[0006] A mounting plate is installed at the rear end of the frame plate. A drive rod is rotatably mounted in the mounting plate via a bearing. The two ends of the drive rod are slidably connected to two tracked wheels. A drive component for rotating the drive rod is installed on the mounting plate.

[0007] The return-to-center components are installed on both sides of the rear end of the vehicle body. The return-to-center components are used to straighten the snowmobile after it has overturned. A moving mechanism for driving the return-to-center components is installed on the bottom of the frame plate.

[0008] A threaded rod is rotatably mounted on the bottom of the frame plate. Adjustment plates are sleeved on the outer sides of both ends of the threaded rod, and the two adjustment plates are respectively fixed to the inner sides of the two tracked wheels. The moving mechanism is used for the rotation adjustment of the threaded rod, and the moving mechanism is connected to the adjustment assembly.

[0009] Preferably, the return-to-center assembly includes a bidirectional threaded rod and two protective frames. The two ends of the bidirectional threaded rod are rotatably connected to the end plates on both sides of the frame plate via bearings, and the bottoms of the two protective frames are respectively threaded to the two ends of the bidirectional threaded rod. An electric push rod is fixed to the top of the protective frame, and a contact plate that abuts against the ground is fixed to the output end of the electric push rod. Both sides of the frame plate have mating grooves, and a linkage component that is connected to the moving mechanism is installed in the mating grooves. The designed return-to-center assembly can return the snowmobile to its correct position after it has tipped over.

[0010] Preferably, the moving mechanism includes a moving motor, the output end of which is fixed to a drive shaft via a coupling. A first drive gear and a second drive gear are sequentially fixed to the outer side of the drive shaft. A steering gear meshing with the second drive gear is rotatably mounted on the bottom of the frame plate via a bearing seat. A second threaded rod is rotatably mounted on the bottom of the frame plate. A driving gear meshing with the first drive gear is threaded onto the outer side of the second threaded rod. A toothed belt that engages with the adjusting component is meshed onto the outer side of the driving gear. Both ends of the second and first threaded rods are fixed with meshing transmission gears. An adjusting component is mounted on the bottom of the frame plate. Both ends of the adjusting component are respectively connected to two linkage components. The adjusting component is also connected to the first and second drive gears. This designed moving mechanism enables the adjustment of the base and tracked wheels, allowing the snowmobile's center of gravity to shift upwards after it overturns, facilitating righting.

[0011] Preferably, the adjusting component includes two support plates fixed to the bottom of the frame plate. A movable rod is slidably inserted into the two support plates, and a double gear adapted to drive gear one and drive gear two is fixed on the outer wall of the movable rod between the two support plates. An electric push rod two is fixed to the bottom of the frame plate, and a connecting plate that is sleeved with the movable rod is fixed to the output end of the electric push rod two. A limiting block that abuts against both sides of the connecting plate is fixed to the outside of the movable rod, and a prismatic insert rod is fixed to both ends of the movable rod. Inserts that are inserted into the prismatic insert rod are rotatably installed at both ends of the bottom of the frame plate through bearing seats. The inserts are connected to the linkage component. The designed adjusting component can meet the connection of the two linkage components. At the same time, through the extension and retraction adjustment of the electric push rod two, the rotation of the linkage component can drive the protective frame to move outward regardless of how the drive motor rotates.

[0012] Preferably, the linkage includes linkage gears fixed to the outer ends of the insert and the bidirectional threaded rod. The two linkage gears are fitted with toothed belts on their outer sides, and the toothed belts are inserted into the mating groove. The linkage is designed to allow rotation of the bidirectional threaded rod, so that the two protective frames can move synchronously in opposite directions.

[0013] Preferably, the adjustment assembly includes a lead screw one and two lead screw twos. Two support blocks are fixed on the frame plate, and the lead screw one and the two lead screw twos are rotatably connected to the two support blocks through bearings. Both ends of the lead screw one and the two lead screw twos are threadedly connected to both sides of the base, and the outer threads of the lead screw one and the two lead screw twos face opposite directions. A driven gear that meshes with the toothed belt one is fixed on the outer side of the lead screw one, and a synchronous gear that meshes with the driven gear is fixed on the outer side of each of the two lead screw twos. The designed adjustment assembly can realize the movement and adjustment of the base, so that after the vehicle is overturned, the base and the vehicle body can be moved to the end away from the ground, so that the center of gravity is raised, making it easier to right itself.

[0014] Preferably, both ends of the bottom of the base are fixed with a movable platform that is threadedly connected to the threaded rod. The movable platform is slidably connected to the movable port. The movable platform designed at the bottom of the base is threadedly connected to the threaded rod, which makes the base more stable when moving.

[0015] Preferably, the adjusting plate includes a docking plate fixed to the inner wall of the tracked wheel. The docking plate is sleeved on the outside of the threaded rod one, and an electric push rod three is fixed to the outside of the docking plate. The output end of the electric push rod three is fixed with an arc-shaped plate that fits against the threaded rod one, and the inner wall of the arc-shaped plate is engraved with a threaded groove that matches the threaded rod one. The outer wall of the docking plate is fixed with a reinforcing rib that is fixed to the inner plate of the tracked wheel. The electric push rod three is designed to drive the arc-shaped plate to dock with the threaded rod one, so that when the threaded rod one rotates, it can drive the docking plate to move.

[0016] Preferably, the driving component includes two rotating gears and a drive motor fixed on the mounting plate. The output end of the drive motor is fixed to one of the rotating gears via a coupling, and the other rotating gear is slidably sleeved on the outside of the drive rod and rotatably connected to the mounting plate. The outer sides of the two rotating gears are fitted with toothed belts. The drive rod is a prismatic rod, and the inner side of the rotating gear has a prismatic opening adapted to the drive rod. The drive wheel in the tracked wheel is slidably inserted into the drive rod. Power is provided by the drive motor to drive the drive rod to rotate, thereby driving the two tracked wheels.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention utilizes a designed moving mechanism to rotate a threaded rod, which in turn moves the tracked wheels in conjunction with an adjusting plate. The interaction of the adjusting components allows the base and vehicle body to move accordingly. This enables the snowmobile to shift its center of gravity upwards when it overturns. Furthermore, the protective frame within the return-to-center component abuts against the ground, allowing for adjustment of the snowmobile's rollover angle and enabling automatic return-to-center operation. In the event of an accidental rollover during snow rescue operations, the snowmobile can automatically return to its correct position, preventing delays in rescue efforts. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle;

[0021] Figure 3 This is the overall front view of the invention;

[0022] Figure 4 This is a schematic diagram of the overall bottom structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure after the carriage is removed in this invention;

[0024] Figure 6 This is a schematic diagram of the adjustment component structure after cross-section of the base of the present invention;

[0025] Figure 7 This is a cross-sectional view of the base of the present invention from another angle.

[0026] Figure 8 This is a schematic diagram of the bottom structure of the frame plate of the present invention after partial cross-section;

[0027] Figure 9 for Figure 8 Enlarged view of point A in the middle;

[0028] Figure 10 This is a schematic diagram of three states during the automatic tilting and righting process of the snowmobile after it has overturned.

[0029] In the diagram: 1-Frame plate; 2-Tracked wheel; 3-Cargo box; 4-Base; 5-Moving port; 6-Insertion plate; 7-Adjusting component; 8-Mounting plate; 9-Drive rod; 10-Drive component; 11-Returning component; 12-Moving mechanism; 13-Threaded rod one; 14-Adjusting plate; 15-Double threaded rod; 16-Protective frame; 17-Electric push rod one; 18-Contact plate; 19-Matching groove; 20-Linkage component; 21-Moving motor; 22-Drive gear one; 23-Drive gear two; 24-Steering gear; 2 5-Threaded rod II; 26-Drive gear; 27-Toothed belt I; 28-Transmission gear; 29-Moving rod; 30-Double gear; 31-Electric push rod II; 32-Rhomboid insert rod; 33-Insertion post; 34-Linkage gear; 35-Toothed belt II; 36-Lead screw I; 37-Lead screw II; 38-Toothed belt III; 39-Driven gear; 40-Synchronizing gear; 41-Moving table; 42-Matching plate; 43-Electric push rod III; 44-Arc plate; 45-Drive motor; 46-Rotating gear; 47-Adjusting component. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1

[0032] Please see Figures 1-5 The diagram shows an unmanned snowmobile, including a frame plate 1. Two tracked wheels 2 are located at one bottom of the frame plate 1, and a skid is installed at the other bottom via a shock absorber. A battery pack is installed on the top. A carriage 3 is mounted on the frame plate 1, with lights installed at both ends of the carriage 3. An ultrasonic radar and a camera are installed on the front side, a lidar and a binocular camera are installed on the top of the carriage 3, and a photovoltaic panel and a GPS antenna are installed on the rear side of the carriage 3. An tilt sensor is installed on the frame plate 1, and a thermal infrared human body sensor is installed at the front of the carriage 3. The snowmobile also includes a base 4, which is fixed to the bottom of the carriage 3. Multiple movable openings 5 ​​are opened on the frame plate 1, and a plug plate 6 is fixed to the bottom of the base 4 and slides into the movable openings 5. An adjustment component 7 for moving the base 4 is installed inside the frame plate 1.

[0033] Mounting plate 8 is installed at the rear end of frame plate 1. A drive rod 9 is rotatably mounted in the mounting plate 8 via bearings. Both ends of the drive rod 9 are slidably connected to two tracked wheels 2. A drive component 10 for rotating the drive rod 9 is installed on the mounting plate 8.

[0034] The return assembly 11 is installed on both sides of the rear end of the carriage 3. The return assembly 11 is used to return the snowmobile to its correct position after it has overturned. A moving mechanism 12 for driving the return assembly 11 is installed at the bottom of the frame plate 1.

[0035] A threaded rod 13 is rotatably mounted on the bottom of the frame plate 1. Adjustment plates 14 are sleeved on the outer sides of both ends of the threaded rod 13, and the two adjustment plates 14 are respectively fixed to the inner sides of the two tracked wheels 2. The moving mechanism 12 is used for the rotation adjustment of the threaded rod 13, and the moving mechanism 12 is connected to the adjustment assembly 7.

[0036] It should be noted that the cameras and binocular cameras installed in the snowmobile can effectively observe the road ahead. Combined with the illumination of the lights, this allows for effective rescue and travel at night. In addition, the battery pack and photovoltaic panels designed can generate their own power, enabling the vehicle to travel a long distance during rescue operations.

[0037] Meanwhile, the solution also includes a drive component 10 for supplying power to the tracked wheels 2. In conjunction with the moving mechanism 12 and the adjusting component 7, the base 4, the carriage 3, and the tracked wheels 2 can be moved to a higher position after the snowmobile overturns, thereby raising the center of gravity. The return component 11 is then used to right the overturned snowmobile.

[0038] It should also be noted that the snowmobile frame plate 1 in this solution is equipped with a tilt sensor. This sensor can determine whether a rollover has occurred, thereby causing the moving mechanism 12 and the adjustment component 7 to perform corresponding actions.

[0039] It is worth noting that in this scheme, the drive component 10 drives the drive rod 9 to rotate. The drive rod 9 is in the shape of a rhomboid rod. The main driving wheel inside the tracked wheel 2 is slidably connected to the drive rod 9. When the drive rod 9 rotates, it will drive the two tracked wheels 2 to rotate accordingly. The tracked wheels 2 will move accordingly as the adjusting plate 14 moves.

[0040] Please refer to Figure 1 and Figures 5-7 The return assembly 11 shown in the figure includes a bidirectional threaded rod 15 and two protective frames 16. The two ends of the bidirectional threaded rod 15 are rotatably connected to the end plates on both sides of the frame plate 1 through bearings, and the bottom of the two protective frames 16 are threadedly connected to the two ends of the bidirectional threaded rod 15 respectively. An electric push rod 17 is fixed on the top of the protective frame 16, and a contact plate 18 that abuts against the ground is fixed on the output end of the electric push rod 17. Both sides of the frame plate 1 have docking grooves 19, and a linkage component 20 that is connected to the moving mechanism 12 is installed in the docking grooves 19.

[0041] It should be noted that after the snowmobile accidentally overturns, the moving mechanism 12 drives the linkage 20 to rotate the bidirectional threaded rod 15, causing the two protective frames 16 to move outwards, so that one protective frame 16 comes into contact with the ground, pushing the snowmobile back up. Figure 10 After adjusting from state a to state b, the electric push rod 17 extends and retracts, causing the contact plate 18 to come into contact with the ground, thereby causing one end of the snowmobile to lift up and, under its own weight, achieve the flipping operation, thus achieving automatic return to center.

[0042] It is worth noting that the protective frame 16 in this solution has a certain strength and can protect the carriage 3 from the outside when it does not overturn. At the same time, the electric push rod 17 is a three-section electric push rod that can achieve three-stage extension and retraction, so that the extension and retraction distance is sufficient to push the overturned snowmobile back to its right position.

[0043] Please also see Figure 4 , Figure 8 and Figure 9The moving mechanism 12 shown in the figure includes a moving motor 21. The output end of the moving motor 21 is fixed to a drive shaft via a coupling. Drive gear 1 22 and drive gear 23 are fixed to the outside of the drive shaft in sequence. A steering gear 24 that meshes with drive gear 23 is rotatably mounted on the bottom of the frame plate 1 via a bearing seat. A threaded rod 25 is rotatably mounted on the bottom of the frame plate 1. A drive gear 26 that meshes with drive gear 1 22 is threadedly sleeved on the outside of the threaded rod 25. A toothed belt 27 that meshes with the adjusting component 7 is meshed on the outside of the drive gear 26. Both ends of the threaded rod 25 and the threaded rod 13 are fixed with mutually meshing transmission gears 28. An adjusting component 47 is installed on the bottom of the frame plate 1. Both ends of the adjusting component 47 are respectively connected to two linkage components 20. The adjusting component 47 is connected to drive gear 1 22 and drive gear 23.

[0044] It should be noted that after the tilt sensor detects an accidental rollover, the moving motor 21 will rotate in different directions according to the direction of the snowmobile's rollover. This will cause the drive gear 22 and drive gear 23 to rotate. The drive gear 22 meshes with the driving gear 26, causing the threaded rod 25 to rotate synchronously. Under the action of the transmission gear 28, the rotation of the threaded rod 25 will drive the synchronous rotation of the threaded rod 13. This will allow the adjusting plate 14, which is connected to the threaded rod 13, to move the tracked wheel 2. At the same time, the driving gear 26 will move the adjusting component 7 to the driving base 4 through the toothed belt 27. By moving the tracked wheel 2 and the base 4 and the carriage 3 away from the ground, the center of gravity of the snowmobile will shift upward after the rollover, making it easier for subsequent return-to-righting adjustments.

[0045] It is worth noting that: the adjusting member 47 is connected to the two linkage members 20, and the adjusting member 47 can selectively mesh with the steering gear 24 outside the drive gear 1 22 or drive gear 23. Under the action of the steering gear 24, the rotation direction of the adjusting member 47 will remain unchanged regardless of whether the moving motor 21 rotates forward or backward.

[0046] Please refer to Figure 4 and Figure 8 The adjusting plate 14 shown in the figure includes a docking plate 42 fixed to the inner wall of the tracked wheel 2. The docking plate 42 is sleeved on the outside of the threaded rod 13, and an electric push rod 3 43 is fixed on the outside of the docking plate 42. An arc-shaped plate 44 that fits with the threaded rod 13 is fixed at the output end of the electric push rod 3 43. The inner wall of the arc-shaped plate 44 is engraved with a threaded groove that matches the threaded rod 13. A reinforcing rib that is fixed to the inner plate of the tracked wheel 2 is fixed on the outer wall of the docking plate 42.

[0047] It should be noted that after the snowmobile overturns, the tilt sensor determines the direction of the overturn, causing the electric push rod 3 43 near the ground to push out the arc plate 44 to abut against the outer side of the threaded rod 13. As the threaded rod 13 rotates, it can drive the arc plate 44 and the corresponding docking plate 42 to move, thereby causing the tracked wheel 2 to move.

[0048] Additionally, please see Figure 4 , Figure 8 and Figure 9 The adjusting component 47 shown in the figure includes two support plates fixed to the bottom of the frame plate 1. A moving rod 29 is slidably inserted into the two support plates. A double gear 30 adapted to drive gear 1 22 and drive gear 23 is fixed on the outer wall between the two support plates. An electric push rod 21 is fixed to the bottom of the frame plate 1. A connecting plate that is sleeved with the moving rod 29 is fixed to the output end of the electric push rod 21. A limiting block that abuts against both sides of the connecting plate is fixed to the outside of the moving rod 29. A prismatic insert rod 32 is fixed to both ends of the moving rod 29. Insert pins 33 that are inserted into the prismatic insert rods 32 are rotatably installed at both ends of the bottom of the frame plate 1 through bearing seats. The insert pins 33 are connected to the linkage component 20.

[0049] It should be noted that after the snowmobile overturns to one side, the moving motor 21 starts to rotate forward. At this time, the large gear on the double gear 30 meshes with the drive gear 22, which will drive the moving rod 29 to rotate forward. At the same time, it will drive the prismatic inserts 32 at both ends to rotate the corresponding inserts 33, so that the linkage 20 starts to operate. Similarly, after the snowmobile overturns in the other direction, the moving motor 21 starts to rotate in reverse. Before rotating in reverse, it will drive the moving rod 29 to move through the electric push rod 31, so that the double gear 30 disengages from the drive gear 22 and the small gear on the double gear 30 meshes with the steering gear 24. At this time, the prismatic inserts 32 are still connected to the inserts 33. The rotation of the moving motor 21 will still drive the moving rod 29 to rotate forward.

[0050] It is worth noting that both ends of the designed double gear 30 are chamfered to facilitate docking with the steering gear 24 and the drive gear 22.

[0051] Please also see Figure 2 , Figure 3 and Figure 7 The linkage 20 shown in the figure includes linkage gears 34 fixed to the outer ends of the insert post 33 and the bidirectional threaded rod 15. The outer sides of the two linkage gears 34 are fitted with toothed belts 35, and the toothed belts 35 are inserted into the mating groove 19.

[0052] It should be noted that the rotation of the insert 33 will cause one of the linkage gears 34 to rotate, and under the action of the toothed belt 35, the other linkage gear 34 will rotate, thereby causing the bidirectional threaded rod 15 to start rotating. No matter which direction the snowmobile is overturned, the rotation direction of the linkage gear 34 is the same, which will directly cause the two protective frames 16 to move outward synchronously, and cause one of the protective frames 16 to abut against the ground, adjusting the overturned snowmobile and facilitating its subsequent righting.

[0053] It is worth noting that the toothed belt 35 is inserted into the mating groove 19. The mating groove 19 is designed to be perfectly matched with the toothed belt 35, so that it can stably drive the two linkage gears 34 to rotate.

[0054] In this solution, please refer to Figure 2 and Figure 4 The drive unit 10 shown in the figure includes two rotating gears 46 and a drive motor 45 fixed on the mounting plate 8. The output end of the drive motor 45 is fixed to one of the rotating gears 46 through a coupling, and the other rotating gear 46 is slidably sleeved on the outside of the drive rod 9 and rotatably connected to the mounting plate 8. The two rotating gears 46 are meshed with toothed belts 38 on their outer sides. The drive rod 9 is a prismatic rod, and the inner side of the rotating gear 46 has a prismatic opening that matches the drive rod 9. The drive wheel in the tracked wheel 2 is slidably inserted into the drive rod 9.

[0055] It should be noted that: the rotation of the drive motor 45 drives one of the rotating gears 46 to rotate. Under the action of the toothed belt 38, the two rotating gears 46 and the drive rod 9 rotate, thereby driving the tracked wheel 2. The drive rod 9 is a prismatic rod, which rotates and connects with the mounting plate 8 through the corresponding bearing, thereby achieving installation on the frame plate 1.

[0056] The method for automatically flipping and righting a snowmobile after it has overturned: When a snowmobile accidentally overturns while driving on snow, the tilt sensor on the snowmobile detects the overturn. At this time, the direction of the overturn is first determined, and then the corresponding electric push rod 3 43 is controlled to abut the arc plate 44 against the threaded rod 13. The electric push rod 21 causes the moving rod 29 to move accordingly, so that the double gear 30 meshes with the drive gear 1 22 or the steering gear 24. Then, the rotation of the moving motor 21 causes the drive gear 1 22 and drive gear 2 23 to rotate accordingly. By driving the gear 26 to mesh with the drive gear 1 22, the threaded rod 25 starts to rotate. Under the action of the transmission gear 28, the threaded rod 13 rotates synchronously, thereby controlling the arc plate 44 and the mating plate 42 that are in contact with the threaded rod 13 to move, driving the tracked wheel 2 to move. The tracked wheel 2 moves away from the ground, which makes the center of gravity of the snowmobile shift upward, making it easier to flip and right itself.

[0057] During the adjustment of the tracked wheels 2, the moving rod 29 also begins to rotate along with the moving motor 21. This drives the rotation of the insert 33 and the linkage gear 34, and under the action of the toothed belt 35, the two ends of the bidirectional threaded rod 15 rotate synchronously. This causes the two protective frames 16 to move outward, so that one protective frame 16 is in contact with the ground, while the other protective frame 16 is raised away from the ground, increasing its center of gravity. When the protective frame 16 is in contact with the ground, the overturned snowmobile will... Figure 10 The state is adjusted from state a to state b, and then the electric push rod 17 extends and retracts, causing the contact plate 18 to move outward and press against the ground, thus moving it from... Figure 10 The snowmobile begins to transition from state b to state c, and eventually, with the help of a higher center of gravity, it flips over and rights itself, thus enabling the snowmobile to right itself after it has overturned, avoiding delays in rescue time.

[0058] After flipping back to the starting position, the reverse rotation of the moving motor 21 will cause the threaded rod 13 to reverse, which will drive the previously moved docking plate 42 and tracked wheel 2 to reset. At the same time, the linkage 20 will drive the bidirectional threaded rod 15 to reverse, causing the two protective frames 16 to return to their original positions and fit against the outer wall of the carriage 3.

[0059] In this design, the driverless snowmobile is lightweight, small in size, and has a simple, reliable, and durable body structure because it does not require human drivers.

[0060] In this design, a protective plate is fixed at the bottom of the frame plate 1 at the position corresponding to the moving motor 21 to prevent damage caused by collisions on the road.

[0061] Example 2

[0062] Please see Figure 6 This embodiment further illustrates Example 1. The adjustment assembly 7 shown in the figure includes a lead screw 36 and two lead screws 37. Two support blocks are fixed on the frame plate 1. The lead screw 36 and the two lead screws 37 are rotatably connected to the two support blocks through bearings. Both ends of the lead screw 36 and the two lead screws 37 are threadedly connected to both sides of the base 4. The outer threads of the lead screw 36 and the two lead screws 37 face opposite directions. A driven gear 39 that meshes with the toothed belt 27 is fixed on the outer side of the lead screw 36. A synchronous gear 40 that meshes with the driven gear 39 is fixed on the outer side of each of the two lead screws 37.

[0063] It should be noted that when the gear 26 rotates, the driven gear 39 will rotate through the toothed belt 27, thereby causing the lead screw 36 to rotate. Under the action of the synchronous gear 40, the two lead screws 37 will start to rotate synchronously in opposite directions. The outer thread of the lead screw 37 is opposite to that of the lead screw 36. Therefore, the synchronous opposite rotation of the lead screw 36 and the lead screw 37 will simultaneously drive the base 4 to move accordingly.

[0064] It should also be noted that: the base 4 is fixed with threaded sleeves at the positions corresponding to lead screw 1 36 and the two lead screws 2 37, and the threaded sleeves are threadedly connected to lead screw 1 36 and lead screw 2 37. At the same time, the inner side of the threaded sleeve is chamfered to facilitate the connection of lead screw 1 36 and lead screw 2 37.

[0065] It is worth noting that, in order to make the base 4 move more stably, the bottom plate 6 is inserted into the moving port 5.

[0066] The rest of the structure is the same as in Example 1.

[0067] Example 3

[0068] Please see Figure 4 , Figure 8 and Figure 9 This embodiment further illustrates other embodiments. The moving mechanism 12 in the figure includes a moving motor 21. The output end of the moving motor 21 is fixed to a drive shaft through a coupling. A drive gear 22 and a drive gear 23 are fixed to the outside of the drive shaft in sequence. A steering gear 24 that meshes with the drive gear 23 is rotatably mounted on the bottom of the frame plate 1 through a bearing seat. A threaded rod 25 is rotatably mounted on the bottom of the frame plate 1. A drive gear 26 that meshes with the drive gear 22 is threadedly sleeved on the outside of the threaded rod 25. A toothed belt 27 that meshes with the adjusting component 7 is meshed on the outside of the drive gear 26. Both ends of the threaded rod 25 and the threaded rod 13 are fixed with mutually meshing transmission gears 28. An adjusting component 47 is installed on the bottom of the frame plate 1. Both ends of the adjusting component 47 are respectively connected to two linkage components 20. The adjusting component 47 is connected to the drive gear 22 and the drive gear 23.

[0069] The base 4 has a movable table 41 fixed at both ends of its bottom, which is threadedly connected to the threaded rod 25. The movable table 41 is slidably connected to the movable port 5.

[0070] It should be noted that during the rotation of the threaded rod 25, it will simultaneously drive the moving table 41, which is threadedly connected to it, to move. This, together with the lead screw 36 and lead screw 37, drives the base 4 to move, making the movement of the base 4 more stable and satisfying the driving of the carriage 3.

[0071] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0072] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An unmanned snowmobile, comprising: The frame plate (1) has two tracked wheels (2) at one end of its bottom and a skid plate installed at the other end of its bottom via a shock absorber. A battery pack is installed on the top. The frame plate (1) has a carriage (3) with lights installed at both ends. An ultrasonic radar and a camera are installed on the front side. A laser radar and a binocular camera are installed on the top of the carriage (3). A photovoltaic power generation panel and a GPS antenna are installed on the rear side of the carriage (3). An tilt sensor is installed on the frame plate (1). A thermal infrared human body sensor is installed at the front of the carriage (3). Its characteristic is that it further includes: The base (4) is fixed to the bottom of the carriage (3). The frame plate (1) has multiple moving holes (5), and the bottom of the base (4) is fixed with a plug plate (6) that slides into the moving holes (5). An adjustment component (7) for moving the base (4) is installed inside the frame plate (1). The mounting plate (8) is installed at the rear end of the frame plate (1). A drive rod (9) is rotatably mounted in the mounting plate (8) through a bearing. The two ends of the drive rod (9) are slidably inserted into two tracked wheels (2). A drive component (10) for rotating the drive rod (9) is installed on the mounting plate (8). The return assembly (11) is installed on both sides of the rear end of the carriage (3). The return assembly (11) is used to return the snowmobile to its correct position after it has overturned. The bottom of the frame plate (1) is equipped with a moving mechanism (12) for driving the return assembly (11). A threaded rod (13) is rotatably mounted on the bottom of the frame plate (1). Adjusting plates (14) are sleeved on the outer sides of both ends of the threaded rod (13), and the two adjusting plates (14) are respectively fixed to the inner sides of the two tracked wheels (2). The moving mechanism (12) is used for the rotation adjustment of the threaded rod (13), and the moving mechanism (12) is connected to the adjusting assembly (7).

2. The unmanned snowmobile according to claim 1, characterized in that: The return assembly (11) includes a bidirectional threaded rod (15) and two protective frames (16). The two ends of the bidirectional threaded rod (15) are rotatably connected to the end plates on both sides of the frame plate (1) through bearings. The bottom of the two protective frames (16) is threadedly connected to the two ends of the bidirectional threaded rod (15). An electric push rod (17) is fixed on the top of the protective frame (16). A contact plate (18) that abuts against the ground is fixed on the output end of the electric push rod (17). Both sides of the frame plate (1) have docking grooves (19). A linkage component (20) that is connected to the moving mechanism (12) is installed in the docking groove (19).

3. The driverless snowmobile according to claim 2, characterized in that: The moving mechanism (12) includes a moving motor (21). The output end of the moving motor (21) is fixed to a drive shaft via a coupling. Drive gear one (22) and drive gear two (23) are fixed to the outside of the drive shaft in sequence. A steering gear (24) that meshes with drive gear two (23) is rotatably mounted on the bottom of the frame plate (1) via a bearing seat. A threaded rod two (25) is rotatably mounted on the bottom of the frame plate (1). The outer thread of the threaded rod two (25) is threaded and meshed with drive gear one (22). The drive gear (26) is fitted with a toothed belt (27) that meshes with the adjustment assembly (7) on the outside of the drive gear (26). Both ends of the threaded rod (25) and the threaded rod (13) are fixed with meshing transmission gears (28). An adjustment component (47) is installed at the bottom of the frame plate (1). Both ends of the adjustment component (47) are respectively connected to two linkage components (20), and the adjustment component (47) is connected to the drive gear (22) and the drive gear (23).

4. The driverless snowmobile according to claim 3, characterized in that: The adjusting component (47) includes two support plates fixed to the bottom of the frame plate (1). A moving rod (29) is slidably inserted into the two support plates. A double gear (30) adapted to drive gear one (22) and drive gear two (23) is fixed on the outer wall of the moving rod (29) between the two support plates. An electric push rod two (31) is fixed at the bottom of the frame plate (1). A connecting plate that is sleeved with the moving rod (29) is fixed at the output end of the electric push rod two (31). A limiting block that abuts against both sides of the connecting plate is fixed on the outside of the moving rod (29). A prismatic insert rod (32) is fixed at both ends of the moving rod (29). Insert pins (33) that are inserted into the prismatic insert rods (32) are rotatably installed at both ends of the bottom of the frame plate (1) through bearing seats. The insert pins (33) are connected to the linkage component (20).

5. The driverless snowmobile according to claim 4, characterized in that: The linkage component (20) includes linkage gears (34) fixed to the outer ends of the insert (33) and the bidirectional threaded rod (15). The two linkage gears (34) are fitted with toothed belts (35) on their outer sides, and the toothed belts (35) are inserted into the mating groove (19).

6. The driverless snowmobile according to claim 3, characterized in that: The adjustment assembly (7) includes a lead screw (36) and two lead screws (37). Two support blocks are fixed on the frame plate (1). The lead screw (36) and the two lead screws (37) are rotatably connected to the two support blocks through bearings. The two ends of the lead screw (36) and the two lead screws (37) are threadedly connected to both sides of the base (4). The outer threads of the lead screw (36) and the two lead screws (37) face opposite directions. A driven gear (39) that meshes with the toothed belt (27) is fixed on the outer side of the lead screw (36). A synchronous gear (40) that meshes with the driven gear (39) is fixed on the outer side of the two lead screws (37).

7. The unmanned snowmobile according to claim 3, characterized in that: Both ends of the bottom of the base (4) are fixed with a movable platform (41) that is threadedly connected to the threaded rod (25), and the movable platform (41) is slidably connected to the movable port (5).

8. The driverless snowmobile according to claim 1, characterized in that: The adjusting plate (14) includes a docking plate (42) fixed to the inner wall of the tracked wheel (2). The docking plate (42) is sleeved on the outside of the threaded rod (13), and an electric push rod (43) is fixed on the outside of the docking plate (42). An arc-shaped plate (44) that fits against the threaded rod (13) is fixed at the output end of the electric push rod (43). The inner wall of the arc-shaped plate (44) is engraved with a threaded groove that matches the threaded rod (13). A reinforcing rib that is fixed to the inner plate of the tracked wheel (2) is fixed on the outer wall of the docking plate (42).

9. The unmanned snowmobile according to claim 1, characterized in that: The drive unit (10) includes two rotating gears (46) and a drive motor (45) fixed on the mounting plate (8). The output end of the drive motor (45) is fixed to one of the rotating gears (46) through a coupling, and the other rotating gear (46) is slidably sleeved on the outside of the drive rod (9) and rotates and docks with the mounting plate (8). The two rotating gears (46) are meshed with toothed belts (38) on their outer sides. The drive rod (9) is a prismatic rod, and the inner side of the rotating gear (46) has a prismatic opening that matches the drive rod (9). The drive wheel in the tracked wheel (2) is slidably inserted into the drive rod (9).

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