All terrain vehicle four-wheel drive device and all terrain vehicle

Abstract

The invention discloses a dune buggy four-wheel drive device and a dune buggy, and relates to the technical field of dune buggies. Comprising a four-wheel drive device, a vehicle body and a sand storage mechanism, the four-wheel drive device is installed on the vehicle body, a tail frame is installed at the tail of the vehicle body, and the sand storage mechanism is installed on the tail frame; the four-wheel driving device comprises a transmission system mounting frame, and wheels are mounted on a transmission shaft of the transmission system mounting frame. By arranging the storage box, the multifunctional sand storage wheel and other structures, the transmission relation between the transmission shaft and the wheel shaft of the transmission system mounting frame can be controlled through the transmission mechanism and the clutch mechanism; when the transmission relation is established, the wheel shaft is driven to rotate based on rotation of the transmission shaft, and then sand is raised and conveyed into the storage box through the multifunctional sand storage wheel and stored in the storage box; and when the sand pit is encountered and the wheel sinks, the sand in the storage box can be conveyed to the wheel through the conveying mechanism to fill the wheel to a certain extent, so that the wheel is assisted to be separated from the sand pit.

Description

Technical Field

[0001] The present invention relates to the technical field of beach vehicles, in particular to a four-wheel drive device for a beach vehicle and a beach vehicle. Background Art

[0002] On sandy beaches and other challenging terrain, vehicle operation is often hampered by factors such as soft, slippery sand. Traditional vehicles, once their wheels become stuck in a sand pit, often struggle to free themselves and require external assistance or human rescue.

[0003] After searching, the application scheme of Chinese patent application number CN201820821316.0 discloses an amphibious multifunctional beach vehicle; comprising a beach vehicle body and wheels, the beach vehicle body is provided with two inflatable airbags, the number of inflatable airbags is symmetrically distributed on both sides of the beach vehicle body, and an electronically controlled air blowing nozzle is controlled to blow air into the inflatable airbags on both sides of the amphibious multifunctional beach vehicle through an air nozzle; After searching, the application proposal with Chinese patent application number CN202411158734.2 discloses a beach vehicle battery heat dissipation installation box and a beach vehicle; it includes a vehicle body, a seat frame is provided on the outer surface of the back side of the vehicle body, a seat cushion is provided on the outer surface of the upper end of the seat frame, a lifting handle is provided at the front end of the seat cushion, and a movable rotating shaft is provided between the seat cushion and the seat frame.

[0004] The beach cars in the above documents all adopt conventional wheel structures, and all have the problem that the wheels cannot be rescued when they fall into pits, and thus cannot be well adapted to the uneven beach terrain. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a beach vehicle four-wheel drive device and a beach vehicle.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A beach vehicle comprises a four-wheel drive device, a vehicle body, and a sand storage mechanism, wherein the four-wheel drive device is mounted on the vehicle body, a tail rack is mounted at the rear of the vehicle body, and the sand storage mechanism is mounted on the tail rack; the four-wheel drive device comprises a transmission system mounting frame, and wheels are mounted on the transmission shaft of the transmission system mounting frame; A support arm is installed on the outer wall of one side of the tail frame, and the sand storage mechanism includes an adjusting arm, a first annular seat is fixed to the side wall of one end of the adjusting arm, and the first annular seat is rotatably installed on the supporting arm, and a storage box is installed on the supporting arm through a bracket, and the tail frame is installed with a position adjustment mechanism, and the position adjustment mechanism is used to adjust the position of the storage box; a wheel axle is rotatably installed on the adjusting arm, and a multifunctional sand storage wheel is installed on the wheel axle; an opening adapted to the multifunctional sand storage wheel is opened on the storage box, and the upper part of the multifunctional sand storage wheel passes through the opening and is located in the storage box; conveying mechanisms are provided on both sides of the bottom of the storage box, the feed port of the conveying mechanism is connected to the inside of the storage box, and the output end of the conveying mechanism faces the wheel; the transmission shaft of the transmission system mounting frame is connected to the wheel axle through a transmission mechanism and a clutch mechanism.

[0007] As a preferred embodiment of the present invention, the multifunctional sand storage wheel includes an inner wheel, which is mounted on a wheel axle, an outer wheel is mounted on the outer side of the inner wheel, the outer wheel and the inner wheel are concentrically arranged, the outer wheel is provided with circumferentially distributed sand inlets, and a bucket is mounted in the sand inlet; the diameter of the outer wheel is larger than the diameter of the wheel.

[0008] As a preferred embodiment of the present invention, the transmission mechanism includes a transmission shaft, a support frame is installed on one side of the tailstock, the transmission shaft is rotatably installed on the support frame, the rotation center of the transmission shaft is consistent with the rotation center of the adjustment arm, and the transmission shaft of the transmission system mounting frame is connected to the transmission shaft through a first wheel chain transmission assembly; slide seats are slidably connected to both ends of the transmission shaft, a mounting disk is installed on the transmission shaft, the mounting disk and the slide seat are connected by a compression spring, and an arc-shaped protrusion is provided on the side of the slide seat away from the mounting disk; the slide seat can slide axially along the transmission shaft; A mounting shaft is rotatably installed on an adjusting arm, and a second annular seat is installed on one end of the adjusting arm away from the side of the first annular seat. The second annular seat of one adjusting arm is connected to the mounting shaft through a third wheel chain transmission assembly, and a driving gear is installed on the mounting shaft, and a driven gear is installed on the wheel axle, and the driving gear and the driven gear are meshed; the second annular seat of the other adjusting arm is directly connected to the wheel axle through the second wheel chain transmission assembly; an annular groove is provided on the driving sprocket of the second wheel chain transmission assembly and the third wheel chain transmission assembly, and the driving sprocket is rotatably installed on the second annular seat through the annular groove, and a transverse slide groove is provided at the center of the driving sprocket, and a transmission rod is slidably connected in the transverse slide groove, and a clutch mechanism is used to control the clutch transmission of the transmission rods and the slide seat on both sides.

[0009] As a preferred embodiment of the present invention: the end side surface of the arc-shaped protrusion is an arc surface structure, the clutch mechanism includes a second hydraulic cylinder, the second hydraulic cylinder is installed on the support arm, the output end of the second hydraulic cylinder is installed with a translation seat, the inner side of the translation seat is rotatably installed with a transmission seat, the center of one side of the transmission seat is fixed to the end of the transmission rod, and a circumferentially distributed transmission arc groove is provided on the side of the transmission seat close to the arc-shaped protrusion. The transmission arc groove has an arc structure that is compatible with the arc-shaped protrusion, and oblique guide surfaces are provided at both ends of the transmission arc groove.

[0010] As a preferred embodiment of the present invention, the position adjustment mechanism includes a first hydraulic cylinder, one end of the first hydraulic cylinder is mounted on the tail frame via a first hinge, and an output end of the first hydraulic cylinder is mounted on the adjustment arm via a second hinge.

[0011] As a preferred embodiment of the present invention: the bucket is rotatably installed in the sand inlet through an axis, the side wall of the bucket is a curved structure adapted to the outer wheel, the outer wheel and the inner wheel are connected by a connecting plate, and a plurality of connecting plates are arranged in a circular distribution; the connecting plate and the bucket are connected by a support spring, and based on the support of the support spring, one end of the bucket is exposed to the outside of the outer wheel.

[0012] As a preferred embodiment of the present invention, a convex block is installed on the outer side of the bucket, and the convex block has a V-shaped structure.

[0013] As a preferred embodiment of the present invention: the two sides of the connecting plate are in a structure with the middle part bulging upward, and baffles are fixed on both sides of the opening of the storage box, the baffles are used to close the gap between the outer wheel and the inner wheel, and the part of the baffle located in the storage box is provided with a leakage port, the position of the leakage port is adapted to the gap between the outer wheel and the inner wheel.

[0014] As a preferred embodiment of the present invention: the conveying mechanism includes a conveying cavity, which is arranged on both sides of the bottom of the storage box, a conveying dragon is installed in the conveying cavity, and a conveying motor for driving the conveying dragon to rotate is installed at one end of the conveying cavity; an output pipe is installed at one end of the conveying cavity, and one end of the output pipe extends to the wheel.

[0015] As a preferred embodiment of the present invention: a guide groove is provided at the bottom of the storage box, the guide groove is an inverted V-shaped structure, and the feed port of the conveying cavity is connected to the end of the guide groove.

[0016] The beneficial effects of the present invention are: The present invention provides a storage box, a multifunctional sand storage wheel and other structures, and can control the transmission relationship between the transmission shaft of the transmission system mounting frame and the wheel axle through a transmission mechanism and a clutch mechanism; when the transmission relationship is established, the wheel axle is driven to rotate based on the rotation of the transmission shaft, and then the multifunctional sand storage wheel is used to lift the sand and transport it to the storage box for storage; when the wheel sinks into a sand pit, the sand in the storage box can be transported to the wheel through the transport mechanism to fill it to a certain extent, thereby helping the wheel to escape from the sand pit.

[0017] The present invention sets a transmission mechanism, which can establish a transmission relationship between the wheel axle and the transmission shaft through the second wheel chain transmission assembly or the third wheel chain transmission assembly based on the clutch mechanism, thereby realizing the forward and reverse rotation of the wheel axle. Since the rotation center of the transmission shaft is consistent with the rotation center of the adjustment arm, when adjusting the position of the storage box, there will be no motion interference between the second wheel chain transmission assembly and the third wheel chain transmission assembly, so that the structure can drive the multi-functional sand storage wheel to operate through transmission at multiple angles, meeting the use and storage needs in different scenarios.

[0018] The present invention is provided with a clutch mechanism, which can work based on the second hydraulic cylinder to push the translation seat, so that the transmission seat moves toward the slide seat, and the guide surface can guide the arc-shaped protrusion to be inserted into the transmission arc groove, thereby realizing the transmission connection of the structure; since the multifunctional sand storage wheel is usually used at a slow speed, there is no need to consider the problem of damage caused by structural clutch at an excessively fast speed.

[0019] The present invention is provided with a movable bucket, which can make the wheel axle rotate forward or reverse as needed when the transmission shaft rotates in one direction according to the control of the clutch mechanism. When the wheel axle is reversed, sand can be shoveled through the bucket. When the wheel axle is forward, the vehicle body can be assisted to move based on the outer wheel. During the process, the bucket is squeezed into the outer wheel, and the bucket and the outer wheel are closed to form a complete ring structure.

[0020] The present invention provides a connecting plate and a baffle with an upward bulge in the middle, so that when the sand is lifted up, part of the sand falls into the gap between the outer wheel and the inner wheel. The connecting plate can guide the sand to both sides. When it rotates to the leakage point, the sand can be transported to the storage box, thereby improving the sand delivery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the transmission system mounting frame, tailstock and sand storage mechanism of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the tailstock and sand storage mechanism of the present invention.

[0023] Figure 3 This is a structural diagram of the multifunctional sand storage wheel and the storage box being separated according to the present invention.

[0024] Figure 4 It is a structural schematic diagram of the multifunctional sand storage wheel of the present invention.

[0025] Figure 5 It is a structural schematic diagram of the transmission mechanism of the present invention.

[0026] Figure 6 It is a structural schematic diagram of the arc-shaped protrusion and the transmission seat of the present invention.

[0027] Figure 7 It is a schematic diagram of the structure of the transmission mechanism of the present invention after partial disassembly.

[0028] In the figure: 1 - transmission system mounting frame; 2 - wheel; 3 - conveying motor; 4 - storage box; 5 - outer wheel; 6 - first hydraulic cylinder; 7 - tailstock; 8 - driven gear; 9 - second hinge seat; 10 - axle; 11 - adjustment arm; 12 - support arm; 13 - second hydraulic lever; 14 - first hinge seat; 15 - bump; 16 - bucket; 17 - transmission arc groove; 18 - transmission rod; 19 - output pipe; 20 - conveying chamber; 21 - guide groove; 22 - leakage port; 23-baffle; 24-conveying dragon; 25-connecting plate; 26-support spring; 27-inner wheel; 28-second wheel chain transmission assembly; 29-third wheel chain transmission assembly; 30-driving gear; 31-translation seat; 32-first wheel chain transmission assembly; 33-transmission shaft; 34-compression spring; 35-transmission seat; 36-arc-shaped protrusion; 37-sliding seat; 38-driving sprocket; 39-first annular seat; 40-second annular seat; 41-mounting shaft. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] Example 1:

[0032] ATVs, such as Figure 1-7 As shown, it includes a four-wheel drive device, a vehicle body, and a sand storage mechanism. The four-wheel drive device is installed on the vehicle body, a tail rack 7 is installed at the rear of the vehicle body, and the sand storage mechanism is installed on the tail rack 7; the four-wheel drive device includes a transmission system mounting frame 1, and a wheel 2 is installed on the transmission shaft of the transmission system mounting frame 1.

[0033] A support arm 12 is installed on the outer wall of one side of the tail frame 7, and the sand storage mechanism includes an adjusting arm 11. A first annular seat 39 is fixed to the side wall of one end of the adjusting arm 11, and the first annular seat 39 is rotatably mounted on the support arm 12. A storage box 4 is mounted on the support arm 12 through a bracket, and the tail frame 7 is installed with a position adjustment mechanism, which is used to adjust the position of the storage box 4; a wheel axle 10 is rotatably mounted on the adjusting arm 11, and a multifunctional sand storage wheel is installed on the wheel axle 10; an opening adapted to the multifunctional sand storage wheel is opened on the storage box 4, and the upper part of the multifunctional sand storage wheel passes through the opening and is located in the storage box 4; conveying mechanisms are provided on both sides of the bottom of the storage box 4, the feed port of the conveying mechanism is connected to the inside of the storage box 4, and the output end of the conveying mechanism faces the wheel 2; the transmission shaft of the transmission system mounting frame 1 is connected to the wheel axle 10 through a transmission mechanism and a clutch mechanism.

[0034] By providing structures such as a storage box 4 and a multifunctional sand storage wheel, the transmission relationship between the drive shaft of the transmission system mounting frame 1 and the wheel axle 10 can be controlled through a transmission mechanism and a clutch mechanism. When the transmission relationship is established, the wheel axle 10 is driven to rotate based on the rotation of the drive shaft, and then the multifunctional sand storage wheel is used to lift the sand and transport it to the storage box 4 for storage. When the wheel 2 sinks into a sand pit, the sand in the storage box 4 can be transported to the wheel 2 through the conveying mechanism to fill it to a certain extent, thereby assisting the wheel 2 to escape from the sand pit.

[0035] In order to better store sand; Figure 3 、 Figure 4 As shown, the multifunctional sand storage wheel includes an inner wheel 27, which is mounted on the wheel axle 10, and an outer wheel 5 is mounted on the outer side of the inner wheel 27. The outer wheel 5 and the inner wheel 27 are concentrically arranged, and the outer wheel 5 is provided with circumferentially distributed sand inlets, and a bucket 16 is installed in the sand inlet; the diameter of the outer wheel 5 is larger than the diameter of the wheel 2.

[0036] By providing structures such as the bucket 16 , sand can be scooped up by the bucket 16 and transported to the storage box 4 during the rotation of the outer wheel 5 .

[0037] In order to facilitate the control of the rotation of the axle 10; Figure 2 、 Figure 5-7 As shown, the transmission mechanism includes a transmission shaft 33, a support frame is installed on one side of the tail frame 7, the transmission shaft 33 is rotatably installed on the support frame, the rotation center of the transmission shaft 33 is consistent with the rotation center of the adjusting arm 11, and the transmission shaft of the transmission system mounting frame 1 is connected to the transmission shaft 33 through the first wheel chain transmission assembly 32; the two ends of the transmission shaft 33 are slidably connected with a slide 37, a mounting disk is installed on the transmission shaft 33, and the mounting disk and the slide 37 are connected by a compression spring 34, and an arc-shaped protrusion 36 is provided on the side of the slide 37 away from the mounting disk; the slide 37 can slide axially along the transmission shaft 33.

[0038] A mounting shaft 41 is rotatably mounted on one adjusting arm 11, and a second annular seat 40 is mounted on one end of the adjusting arm 11 away from the side of the first annular seat 39. The second annular seat 40 of one adjusting arm 11 is transmission-connected to the mounting shaft 41 through the third wheel chain transmission assembly 29, and a driving gear 30 is mounted on the mounting shaft 41, and a driven gear 8 is mounted on the wheel axle 10, and the driving gear 30 and the driven gear 8 are meshed with each other; the second annular seat 40 of the other adjusting arm 11 is directly transmission-connected to the wheel axle 10 through the second wheel chain transmission assembly 28; an annular groove is provided on the driving sprocket 38 of the second wheel chain transmission assembly 28 and the third wheel chain transmission assembly 29, and the driving sprocket 38 is rotatably mounted on the second annular seat 40 through the annular groove, and a transverse slide groove is provided at the center of the driving sprocket 38, and a transmission rod 18 is slidingly connected in the transverse slide groove, and a clutch mechanism is used to control the clutch transmission of the transmission rods 18 and the slide seat 37 on both sides.

[0039] By setting up a transmission mechanism, based on the clutch mechanism, the wheel axle 10 can establish a transmission relationship with the transmission shaft 33 through the second wheel chain transmission assembly 28 or the third wheel chain transmission assembly 29, thereby realizing the forward and reverse rotation of the wheel axle 10. Since the rotation center of the transmission shaft 33 is consistent with the rotation center of the adjustment arm 11, when adjusting the position of the storage box 4, there will be no motion interference between the second wheel chain transmission assembly 28 and the third wheel chain transmission assembly 29, so that the structure can drive the multi-functional sand storage wheel to operate through transmission at multiple angles, meeting the use and storage needs in different scenarios.

[0040] In order to better control the structure clutch; Figure 6 As shown, the end side surface of the arc-shaped protrusion 36 is an arc surface structure, and the clutch mechanism includes a second hydraulic cylinder 13, which is installed on the support arm 12. The output end of the second hydraulic cylinder 13 is installed with a translation seat 31, and a transmission seat 35 is rotatably installed on the inner side of the translation seat 31. The center of one side of the transmission seat 35 is fixed to the end of the transmission rod 18, and a circumferentially distributed transmission arc groove 17 is opened on the side of the transmission seat 35 close to the arc-shaped protrusion 36. The transmission arc groove 17 is an arc structure adapted to the arc-shaped protrusion 36, and oblique guide surfaces are provided at both ends of the transmission arc groove 17.

[0041] By setting up a clutch mechanism, the second hydraulic cylinder 13 can work to push the translation seat 31, so that the transmission seat 35 moves toward the slide seat 37. The guide surface can guide the arc-shaped protrusion 36 to be inserted into the transmission arc groove 17, thereby realizing the transmission connection of the structure.

[0042] Since the multifunctional sand storage wheel is usually used at a slow speed, there is no need to consider the problem of damage caused by structural clutch at an excessively fast speed.

[0043] In order to facilitate the control of the position of the storage box 4; Figure 5As shown, the position adjustment mechanism includes a first hydraulic cylinder 6 , one end of the first hydraulic cylinder 6 is mounted on the tail frame 7 through a first hinge seat 14 , and the output end of the first hydraulic cylinder 6 is mounted on the adjustment arm 11 through a second hinge seat 9 .

[0044] By providing a position adjustment mechanism, the first hydraulic cylinder 6 can be used to drive one end of the adjustment arm 11 to rotate on the support arm 12, thereby achieving the purpose of lifting or lowering the storage box 4.

[0045] In order to realize another function of the multifunctional sand storage wheel through different controls; Figure 6 As shown, the bucket 16 is rotatably installed in the sand inlet through an axis, and the side wall of the bucket 16 is an arc structure adapted to the outer wheel 5. The outer wheel 5 and the inner wheel 27 are connected by a connecting plate 25, and a plurality of connecting plates 25 are arranged in a circumferential distribution; the connecting plate 25 and the bucket 16 are connected by a support spring 26. Based on the support of the support spring 26, one end of the bucket 16 is exposed to the outside of the outer wheel 5.

[0046] By providing a movable bucket 16, the wheel axle 10 can be rotated forward or reversed as needed when the drive shaft rotates in one direction according to the control of the clutch mechanism. When the wheel axle 10 is reversed, sand can be shoveled through the bucket 16. When the wheel axle 10 is rotating forward, the vehicle body can be assisted to move based on the outer wheel 5. During the process, the bucket 16 is squeezed into the outer wheel 5, and the bucket 16 and the outer wheel 5 are closed to form a complete ring structure.

[0047] To improve auxiliary movement ability; Figure 4 As shown, a protrusion 15 is installed on the outer side of the bucket 16, and the protrusion 15 is in a V-shaped structure.

[0048] By providing the protrusions 15 , when the outer wheel 5 assists in movement, the protrusions 15 can be used to increase the friction with the sand, thereby enhancing the ability to assist in movement.

[0049] In order to better guide the sand into the storage box 4; Figure 4 As shown, the two sides of the connecting plate 25 are structured with the middle part bulging upward, and baffles 23 are fixed on both sides of the opening of the storage box 4. The baffles 23 are used to close the gap between the outer wheel 5 and the inner wheel 27. The part of the baffle 23 located in the storage box 4 is provided with a leakage opening 22, and the position of the leakage opening 22 is adapted to the gap between the outer wheel 5 and the inner wheel 27.

[0050] By providing a connecting plate 25 with an upwardly raised middle portion and a baffle 23, when the sand is lifted up, some of the sand can fall into the gap between the outer wheel 5 and the inner wheel 27. The connecting plate 25 can guide the sand to both sides. When it rotates to the leakage port 22, the sand can be transported to the storage box 4, thereby improving the sand delivery efficiency.

[0051] In order to facilitate the delivery of sand; Figure 3 、 Figure 5 As shown, the conveying mechanism includes a conveying chamber 20, which is arranged on both sides of the bottom of the storage box 4. A conveying dragon 24 is installed in the conveying chamber 20, and a conveying motor 3 for driving the conveying dragon 24 to rotate is installed at one end of the conveying chamber 20; an output pipe 19 is installed at one end of the conveying chamber 20, and one end of the output pipe 19 extends to the wheel 2.

[0052] In order to better guide the sand into the conveying chamber 20; Figure 3 As shown, a guide groove 21 is provided at the bottom of the storage box 4 , and the guide groove 21 is an inverted V-shaped structure. The feed port of the conveying cavity 20 is connected to the end of the guide groove 21 .

[0053] For the parts of the present invention that are not fully disclosed, those skilled in the art can ensure that the solutions of the present invention are successfully implemented based on common sense, normal thinking logic and existing technologies.

[0054] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. ATV, characterized in that: The invention comprises a four-wheel drive device, a vehicle body, and a sand storage mechanism, wherein the four-wheel drive device is mounted on the vehicle body, a tail frame (7) is mounted at the rear of the vehicle body, and the sand storage mechanism is mounted on the tail frame (7); the four-wheel drive device comprises a transmission system mounting frame (1), and a wheel (2) is mounted on the transmission shaft of the transmission system mounting frame (1); A support arm (12) is installed on an outer wall of one side of the tail frame (7), and the sand storage mechanism includes an adjustment arm (11). A first annular seat (39) is fixed to a side wall of one end of the adjustment arm (11), and the first annular seat (39) is rotatably installed on the support arm (12). A storage box (4) is installed on the support arm (12) through a bracket. The tail frame (7) is installed with a position adjustment mechanism, and the position adjustment mechanism is used to adjust the position of the storage box (4).

2. The beach vehicle according to claim 1, wherein: A wheel axle (10) is rotatably mounted on the regulating arm (11), and a multifunctional sand storage wheel is mounted on the wheel axle (10); an opening adapted to the multifunctional sand storage wheel is provided on the storage box (4), and the upper portion of the multifunctional sand storage wheel passes through the opening and is located in the storage box (4); a conveying mechanism is provided on both sides of the bottom of the storage box (4), a feed port of the conveying mechanism is communicated with the interior of the storage box (4), and an output end of the conveying mechanism faces the wheel (2); a transmission shaft of the transmission system mounting frame (1) is transmission-connected to the wheel axle (10) via a transmission mechanism and a clutch mechanism.

3. The beach vehicle according to claim 2, characterized in that: The multifunctional sand storage wheel comprises an inner wheel (27), the inner wheel (27) being mounted on a wheel axle (10), an outer wheel (5) being mounted on the outer side of the inner wheel (27), the outer wheel (5) and the inner wheel (27) being concentrically arranged, the outer wheel (5) being provided with circumferentially distributed sand inlets, and a bucket (16) being mounted in the sand inlets; the diameter of the outer wheel (5) being larger than the diameter of the wheel (2).

4. The beach vehicle according to claim 2 or 3, characterized in that: The transmission mechanism includes a transmission shaft (33), a support frame is installed on one side of the tail frame (7), the transmission shaft (33) is rotatably installed on the support frame, the rotation center of the transmission shaft (33) is consistent with the rotation center of the adjustment arm (11), and the transmission shaft of the transmission system mounting frame (1) is transmission-connected to the transmission shaft (33) through the first wheel chain transmission assembly (32); the two ends of the transmission shaft (33) are slidably connected to the slide seat (37), the transmission shaft (33) is installed with a mounting plate, the mounting plate and the slide seat (37) are connected by a compression spring (34), and the slide seat (37) is provided with an arc-shaped protrusion (36) on the side away from the mounting plate; the slide seat (37) can slide axially along the transmission shaft (33); A mounting shaft (41) is rotatably mounted on one adjusting arm (11), a second annular seat (40) is mounted on one end of the adjusting arm (11) away from the first annular seat (39), the second annular seat (40) of the adjusting arm (11) is connected to the mounting shaft (41) through a third wheel chain transmission assembly (29), a driving gear (30) is mounted on the mounting shaft (41), a driven gear (8) is mounted on the wheel shaft (10), and the driving gear (30) and the driven gear (8) are meshed; another adjusting arm (11) The second annular seat (40) is directly connected to the wheel shaft (10) through the second wheel chain transmission assembly (28); an annular groove is provided on the driving sprocket (38) of the second wheel chain transmission assembly (28) and the third wheel chain transmission assembly (29); the driving sprocket (38) is rotatably mounted on the second annular seat (40) through the annular groove; a transverse sliding groove is provided at the center of the driving sprocket (38), and a transmission rod (18) is slidably connected in the transverse sliding groove; a clutch mechanism is used to control the clutch transmission of the transmission rods (18) on both sides and the slide seat (37).

5. The beach vehicle according to claim 4, characterized in that: The side surface of the end of the arc-shaped protrusion (36) is an arc surface structure. The clutch mechanism includes a second hydraulic cylinder (13). The second hydraulic cylinder (13) is installed on the support arm (12). The output end of the second hydraulic cylinder (13) is installed with a translation seat (31). The inner side of the translation seat (31) is rotatably installed with a transmission seat (35). The center of one side of the transmission seat (35) is fixed to the end of the transmission rod (18). A circumferentially distributed transmission arc groove (17) is opened on the side of the transmission seat (35) close to the arc-shaped protrusion (36). The transmission arc groove (17) is an arc structure adapted to the arc-shaped protrusion (36), and oblique guide surfaces are provided at both ends of the transmission arc groove (17).

6. The beach vehicle according to claim 1, wherein: The position adjustment mechanism comprises a first hydraulic cylinder (6), one end of the first hydraulic cylinder (6) is mounted on the tail frame (7) via a first hinge seat (14), and an output end of the first hydraulic cylinder (6) is mounted on the adjustment arm (11) via a second hinge seat (9).

7. The beach vehicle according to claim 3, characterized in that: The bucket (16) is rotatably mounted in the sand inlet via an axis, the side wall of the bucket (16) is in an arcuate structure adapted to the outer wheel (5), the outer wheel (5) and the inner wheel (27) are connected via a connecting plate (25), and a plurality of connecting plates (25) are arranged in a circumferential distribution; the connecting plate (25) and the bucket (16) are connected via a support spring (26), and based on the support of the support spring (26), one end of the bucket (16) is exposed outside the outer wheel (5); A protrusion (15) is installed on the outside of the bucket (16), and the protrusion (15) is in a V-shaped structure.

8. The beach vehicle according to claim 7, characterized in that: Both sides of the connecting plate (25) are in a structure with a central portion raised upwards. Baffles (23) are fixed on both sides of the opening of the storage box (4). The baffles (23) are used to close the gap between the outer wheel (5) and the inner wheel (27). The portion of the baffle (23) located in the storage box (4) is provided with a leakage opening (22). The position of the leakage opening (22) is adapted to the gap between the outer wheel (5) and the inner wheel (27).

9. The beach vehicle according to claim 8, characterized in that: The conveying mechanism comprises a conveying chamber (20), the conveying chamber (20) being arranged on both sides of the bottom of the storage box (4), a conveying dragon (24) being installed in the conveying chamber (20), and a conveying motor (3) for driving the conveying dragon (24) to rotate being installed at one end of the conveying chamber (20); an output pipe (19) being installed at one end of the conveying chamber (20), and one end of the output pipe (19) extending to the wheel (2); a guide groove (21) being arranged at the bottom of the storage box (4), the guide groove (21) being an inverted V-shaped structure, and a feed port of the conveying chamber (20) being connected to an end of the guide groove (21).

10. A four-wheel drive device for a beach vehicle, characterized in that: The four-wheel drive device of the beach vehicle is the four-wheel drive device according to any one of claims 1 to 9.

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