Intelligent chassis system of all terrain vehicle

Abstract

The invention discloses an intelligent chassis system of a dune buggy. The intelligent chassis system comprises a chassis, a battery and a supporting system suspended behind the chassis. The supporting system comprises a swing piece and a supporting piece arranged on the swing piece in a telescopic mode, and a driving push rod is arranged between the chassis and the swing piece. A transmission shaft is rotationally arranged in the swinging part and is in transmission connection with a screw rod, a transmission sleeve in transmission connection with the screw rod is arranged on the supporting part, and the transmission shaft is connected with a driving motor; a supporting shaft rotationally connected with the transmission shaft is arranged on the chassis, and the transmission shaft rotationally sleeves the supporting shaft; one end of the supporting piece is in transmission connection with the screw rod, and the other end is provided with a supporting plate; according to the intelligent chassis system of the all terrain vehicle, full-automatic escape of the all terrain vehicle when the all terrain vehicle slips on sand is achieved, manual intervention is not needed, and safety and efficiency are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sand buggies, in particular to an intelligent chassis system of a sand buggy. BACKGROUND

[0002] A new energy sand buggy is a special vehicle designed for soft terrain such as sand, and it meets the power demand of driving on sand by adopting the form of driving the rear wheels with a motor through a power battery pack. However, the sand terrain is loose and has low bearing capacity, and the driving wheels of the vehicle are prone to sinking into the sand during driving, which reduces the contact area between the tires and the sand and significantly reduces the adhesion, thereby causing serious skidding. In particular, the power battery of the new energy sand buggy itself also has a large mass, so it increases the frequency of the sand buggy sinking into the sand. In this case, the sand buggy is often difficult to rely on its own power to escape, which seriously affects its passability and use efficiency.

[0003] At present, the escape method for sand buggies skidding on sand mainly relies on manual assistance. The common method is to fill sand, wood or other temporary materials at the skidding rear wheels to increase the contact area and friction between the tires and the ground, so that the vehicle obtains enough traction to drive out of the pit. However, this method has obvious defects: the personnel need to be close to the vehicle sinking into the sand during the operation, it is inconvenient to move on the soft sand, and the vehicle may have the risk of sudden movement, which threatens the safety of the personnel. SUMMARY

[0004] The present application provides an intelligent chassis system of a sand buggy, which can automatically deploy a set of support mechanism when detecting that the driving wheels are skidding, form a large area and high resistance stable support with the sand through the way of adjusting the angle and then extending the support, thereby lifting the chassis and increasing the adhesion of the driving wheels, helping the vehicle to quickly escape, and the whole process does not need manual intervention.

[0005] To solve the above technical problems, the present application solves the problem by the following technical scheme: an intelligent chassis system of a sand buggy, comprising a chassis, a battery and a support system suspended behind the chassis; The support system comprises a swing member and a support member telescopically arranged on the swing member, and a driving push rod is arranged between the chassis and the swing member; A transmission shaft is rotatably arranged in the swing member, a lead screw is drivingly connected to the transmission shaft, a transmission sleeve drivingly connected to the lead screw is arranged on the support member, and a driving motor is connected to the transmission shaft; A support shaft is rotatably connected to the transmission shaft on the chassis, and the transmission shaft is rotatably sleeved on the support shaft; One end of the support member is drivingly connected to the lead screw, and the other end is provided with a support plate; The swinging component is driven by a push rod to form a support angle with the ground, and further forms effective support with the ground by the extension of the support component, thereby enabling the ATV to get out of trouble.

[0006] In the above scheme, preferably, the transmission shaft is provided with a first bevel gear, and the lead screw is provided with a second bevel gear that meshes with the first bevel gear.

[0007] In the above scheme, preferably, the lead screw is symmetrically arranged on both sides of the support member, and the support member is symmetrically provided with transmission sleeves adapted to the lead screw.

[0008] In the above scheme, preferably, the lead screw is a bidirectional reciprocating lead screw, which includes a reciprocating helical groove, and the support member is provided with a guide pin that cooperates with the reciprocating helical groove.

[0009] In the above scheme, preferably, an electromagnetic clutch is provided between the transmission shaft and the drive motor, and the electromagnetic clutch is controlled and connected to the ATV control room.

[0010] In the above scheme, preferably, the support member has symmetrical movable plates for reducing resistance or pushing sand on both sides, the support member includes symmetrically arranged support tubes, the movable plates are rotatably mounted on the support tubes, and drive cylinders for driving the corresponding movable plates to swing are symmetrically arranged on the support plates.

[0011] In the above scheme, preferably, the movable plate includes a swing rod, the drive cylinder includes a drive rod connected to the swing rod, the swing rod is provided with a sliding groove that cooperates with the drive rod, and the drive rod and the sliding groove are connected by a pin.

[0012] In the above scheme, preferably, the transmission sleeve is fixed to one end of the support tube, and the end of the transmission sleeve near the support tube extends into the support tube to form a telescopic bladder. The telescopic bladder is connected to the drive cylinder through a flexible tube. The lead screw is placed inside the support tube, and a stop plate that cooperates with the telescopic bladder is fixed at one end.

[0013] In the above scheme, preferably, the drive rod is connected to a piston that cooperates with the drive cylinder, a return spring is provided between the piston and the drive cylinder, and a pressure relief valve is provided on the drive cylinder.

[0014] In the above scheme, preferably, the lead screw includes a reciprocating helical groove and reversing grooves provided at both ends of the reciprocating helical groove; The drive push rod is a servo push rod; The support plate is provided with several protruding rods to increase the support resistance between it and the ground; The drive push rod is connected to the ATV control room.

[0015] The beneficial effects of the present invention are: the present invention provides an intelligent chassis system for beach buggies, which realizes fully automatic extrication of beach buggies when they slip on sand without human intervention, significantly improving safety and efficiency; By adjusting the support angle and tilting the chassis, the support plate can compact the sand in the best posture. At the same time, the chassis can be lifted multiple times at different angles to form a stable and reliable mechanical support point, thereby effectively lifting the vehicle body, increasing the adhesion of the drive wheels, and greatly improving the success rate of getting out of trouble. This chassis system is equipped with deployable movable side panels, which can further increase the support or sand-pushing area when the vehicle is severely stuck, allowing the sand on the tire side to be pushed into the slippage pit, thus enhancing its adaptability in complex sand conditions. Furthermore, through the ingenious linkage between the telescopic bladder and the drive cylinder, the movable panel can be automatically folded and reset when the support is retracted, demonstrating a high degree of mechanical intelligence and ease of operation. In addition, when the ATV is traveling at high speed and braking suddenly, the support system can be raised above the chassis, and the movable board can be deployed. The wind resistance of the movable board can reduce the speed of the entire vehicle, thereby achieving the effect of slowing down and improving the safety of ATV driving. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a front view of the support system of the present invention.

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the support system of the present invention.

[0019] Figure 4 This is a cross-sectional structural diagram of the support and swing components of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the transmission shaft of the present invention.

[0021] Figure 6 This is a top view of the support system of the present invention.

[0022] Figure 7 For the present invention Figure 1 A magnified schematic diagram of the structure at point A in the middle. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: See also Figures 1-7 .

[0024] An intelligent chassis system for beach buggies mainly includes a chassis 1, a battery 101 that provides power to the system, and a support system 2 suspended near the rear axle of the chassis 1. The battery 101 is fixed to the chassis 1, and the chassis 1 is equipped with a drive motor for providing power to the rear wheels. Figure 1 As shown.

[0025] The support system 2 includes a swingable swing member 201, which is a robust frame or shell, formed by sand casting or steel welding. It is connected to the rear of the chassis 1 via hinges or bearings, allowing it to swing circumferentially around a transverse axis. A drive push rod 203 is hinged between the chassis 1 and the swing member 201. This drive push rod 203 is preferably a servo-electric push rod, whose extension and retraction are precisely controlled by an on-board controller. It is used to drive the swing member 201 to lift or lower. Specifically, one end of the drive push rod 203 is hinged to the chassis 1 via a pin, and the other end is hinged to an extension arm on the swing member 201 via a pin, thereby realizing the swing of the swing member 201.

[0026] Inside the swing member 201, a hollow drive shaft 3 is arranged laterally. The drive shaft 3 is rotatably supported on the swing member 201 through a bearing seat. A horizontally arranged support shaft 102 is fixed on the chassis 1. It is fixedly connected to the chassis 1 by welding or bolt fastening. The hollow inner hole of the drive shaft 3 is rotatably fitted on the support shaft 102 through a bushing or bearing, thereby providing a stable support for the drive shaft 3, enhancing its rigidity, and allowing the swing member 201 to swing with the drive shaft 3 as a whole, or to rotate the drive shaft 3 relative to the support shaft 102 and the swing member 201 when the swing member 201 is stationary.

[0027] One end of the drive shaft 3 is connected to a drive motor via an electromagnetic clutch. This drive motor can be the rear wheel drive motor of a beach buggy. The engagement and disengagement of the drive shaft 3 are controlled by the electromagnetic clutch, thereby enabling the drive shaft 3 to be connected to the drive motor when necessary, thus achieving the rotation of the drive shaft 3. The on and off of the electromagnetic clutch is controlled by the control room.

[0028] like Figure 3 As shown, two first bevel gears 301 are fixed on the transmission shaft 3, with the gears arranged in the same direction. The second bevel gear 401 meshes with it. The second bevel gear 401 is fixed to the top of the two lead screws 4. The lead screws 4 are rotatably mounted on the swing member 201 through bearings. When the transmission shaft 3 rotates, it synchronously drives the first bevel gears 301 to rotate, thereby causing the second bevel gear 401 to rotate, and finally realizing the rotation of the lead screw 4. The lead screw 4 is rotated and locked on the swing member 201 through the cooperation of the second bevel gear 401 and the bearings.

[0029] In this embodiment, the lead screw 4 is preferably a bidirectional reciprocating lead screw, and its body is machined with continuous, opposite-phase reciprocating helical grooves 402 (e.g.,Figure 5 As shown in the figure, the reciprocating spiral groove 402 is provided with reversing grooves 405 at both ends to realize the reciprocating transmission of the workpiece that cooperates with the lead screw 4; specifically, the support system 2 includes a support member 202, which is composed of two symmetrically arranged support tubes 205 and a connecting tube that connects the two support tubes 205 into one unit. A transmission sleeve 5 is fixed at one end of the support tube 205 near the swing member 201. The transmission sleeve 5 is connected to the lead screw 4 for transmission. The reciprocating sliding of the support member 202 relative to the swing member 201 is realized through the cooperation of the transmission sleeve 5 and the lead screw 4. Specifically, the support member 202 reciprocates along the axis of the lead screw 4.

[0030] A guide pin 403 is fixed inside the transmission sleeve 5. The guide pin 403 is inserted into the reciprocating helical groove 402 of the lead screw 4. When the transmission shaft 3 drives the two lead screws 4 to rotate synchronously through the first bevel gear 301 and the second bevel gear 401, the two support tubes 205 will synchronously reciprocate linearly relative to the oscillating member 201 along the axis of the lead screw 4 through the guiding action of the guide pin 403 and the lead screw 4 in the helical groove. Figure 3 Sliding left and right in the indicated direction allows the support member 202 to extend or retract as a whole. Simultaneously, a support plate 204 is fixed to the bottom end of the support member 202 away from the swing member 201. The bottom surface of the support plate 204 has several protruding rods 206 to increase resistance to slippage when pressed into the sand. In use, the swing member 201 is driven to swing to a certain angle by the drive push rod 203, such as... Figure 2 As shown, the support member 202 swings clockwise along the support shaft 102, causing the support member 202 to form an angle with the ground. Then, the electromagnetic clutch is controlled to drive the drive motor to rotate the transmission shaft 3, so that the support member 202 extends and the rear support plate 204 forms support with the ground, so that the ATV chassis has an upward and forward thrust in the same direction as the driving direction, achieving extrication. When the extrication fails in one attempt, the transmission shaft 3 continues to rotate, causing the support member 202 to retract. At the same time, the drive push rod 203 further drives the swing member 201 to swing clockwise by a certain angle, such as 5° as a single swing amplitude. At this time, after the support member 202 retracts, it continues to be pushed out through the lead screw 4, increasing the support angle between the support member 202 and the ground, further lifting the chassis and giving it a forward thrust, thereby achieving reciprocating extrication and improving the extrication effect of the ATV.

[0031] To further enhance the ability to escape from difficult situations, movable plates 6 are symmetrically fitted at one end of the two support pipes 205 near the support plate 204. Specifically, the movable plates 6 are rotatably sleeved and snapped onto the support pipes 205 through sleeves, i.e., a limiting plate is set on the outer wall of the support pipes 205; the movable plates 6 can swing around the support pipes 205, such as... Figure 1As shown, in the initial state (i.e., the support tube 205 is horizontal with the ground), the movable plate 6 is inclined upward with both sides of the horizontal ground. At this time, the movable plates 6 on both sides can act as the tail fins of the beach buggy to achieve the air guiding effect. Preferably, the movable plate 6 can be made of stainless steel plate or high wear-resistant and high-strength engineering plastic plate.

[0032] The upper edge of the sleeve of the movable plate 6 Figure 2 or Figure 4 A swing rod 602 extends vertically upwards in the indicated direction. A drive cylinder 601 is fixedly mounted on the support plate 204. A piston inside the drive cylinder 601 is connected to a drive rod 603. The end of the drive rod 603 engages with an elongated groove 604 on the swing rod 602 via a pin. When a pressure medium is introduced into the drive cylinder 601 to push the piston, the drive rod 603 moves linearly. Through the transmission of the groove 604, it forces the swing rod 602 and the movable plate 6 to unfold outwards. A return spring is provided inside the drive cylinder 601. When the pressure is released, the spring force can cause the movable plate 6 to swing back and fold. A pressure relief valve 605 is also installed on the drive cylinder 601 to control the system pressure and prevent the movable plate 6 from being damaged by being forcibly driven by external resistance.

[0033] To achieve automatic deployment of the movable plate 6 when the support member 202 extends, and to coordinate with the synchronous action of the support member 202, this embodiment extends a flexible telescopic bladder 7 into the support tube 205 from the lower end of the transmission sleeve 5. The telescopic bladder 7 is a high-pressure bladder with an automatic elastic reset function, meaning that after compression, it inflates through its own elastic expansion and contraction. The telescopic bladder 7 is equipped with a one-way air inlet valve connected to the outside air, allowing the telescopic bladder 7 to draw air out to replenish the internal air when it extends. The telescopic bladder 7 drives the rodless chamber of the cylinder 601 through a flexible tube. The connection allows the internal gas to fill the drive cylinder 601 when the telescopic bladder 7 is compressed, further pushing out the drive rod 603 to unfold the movable plate 6. At the bottom end of the lead screw 4, a stop plate 404 is fixed. When the support member 202 is driven by the lead screw 4 to extend away from the swing member 201, the telescopic bladder 7 slides a distance with the support member 202 and then comes into contact with the stop plate 404 and is gradually squeezed until it is compressed to the limit. At this time, the guide pin 403 cooperates with the reversing groove 405 at the right end of the lead screw 4 to realize the reversing. At this time, the support member 202 is in the limit extension state.

[0034] The workflow of the three working modes of this ATV's intelligent chassis system is as follows: Mode 1: Normal driving and airflow deflection status When the vehicle is driving normally on hard surfaces or sand and does not need to get out of trouble, the system is in the retracted state. The drive push rod 203 controls the swing component 201, keeping the support component 202 and its support plate 204 in a position approximately parallel to the horizontal ground, and retracting them to a position close to the rear of the chassis. At this time, the movable plates 6 fixed on both sides of the support component 202 are tilted upwards, acting as air deflectors (rear wings) to optimize airflow at the rear of the vehicle and improve high-speed driving stability. The electromagnetic clutch is disengaged, the drive motor is disconnected from the drive shaft 3, and the support system is in a low-drag standby state.

[0035] Mode 2: Escaping from slippery sand terrain When the vehicle detects that the rear wheels have slipped and are stuck in a ditch, the system automatically initiates the extrication process.

[0036] The controller command drives the push rod 203 to extend, pushing the swing member 201 to swing clockwise downward around the support shaft 102, so that the support member 202 changes from a horizontal state to an inclined downward posture with a certain angle to the ground. The controller engages the electromagnetic clutch, causing the drive motor (which can reuse the power of the rear wheel drive motor) to drive the transmission shaft 3 and the lead screw 4 to rotate. Through the cooperation of the guide pin 403 and the reciprocating helical groove 402 on the lead screw 4, the support member 202 begins to extend axially toward the ground along the lead screw 4. During the extension of the support member 202, the telescopic bladder 7 fixed on the transmission sleeve 5 moves with the support member 202. When it comes into contact with and is gradually compressed by the stop plate 404 at the bottom of the lead screw 4, the air inside the bladder is forced into the rodless chamber of the drive cylinder 601, pushing the drive rod 603. The drive rod 603 drives the swing rod 602 through the slide groove 604, causing the movable plates 6 on both sides to unfold downward and outward, forming a sand-pushing plate shape. As the support plate 204 presses into the sand, the unfolded movable plates 6 push the sand behind the tire into the pit, assisting in filling the pit and increasing the support area.

[0037] The support member 202 extends continuously to its limit, and the support plate 204 and its protruding rod 206 are fully pressed into the sand, providing the chassis 1 with an upward lifting force and a forward thrust, helping the drive wheels to gain traction and get out of trouble.

[0038] If a single support attempt fails to free the vehicle, the system can perform a reciprocating motion: the drive motor reverses, retracting the support member 202 via the lead screw 4; simultaneously, the drive push rod 203 can further adjust the angle of the swing member 201 (e.g., increasing the tilt angle by 5° each time). Subsequently, the support member 202 extends again. By repeatedly adjusting the support angle and performing push-pull actions, dynamic adjustment of the vehicle's posture and force is achieved until the vehicle is successfully freed.

[0039] Mode 3: High-speed braking assist deceleration state When the vehicle needs emergency or auxiliary braking while traveling at high speeds (such as cruising on a beach), the system can activate the deceleration mode.

[0040] The controller command drives the push rod 203 to retract, pulling the swing component 201 to swing counterclockwise upward to an upward tilt angle; When the controller engages the electromagnetic clutch, the drive motor rotates the lead screw 4, causing the support member 202 to extend from the swing member 201 toward the rear of the vehicle. When it contacts and is gradually compressed by the stop plate 404 at the bottom of the lead screw 4, the air in the telescopic bladder 7 is forced into the rodless chamber of the drive cylinder 601, pushing the drive rod 603. The drive rod 603 drives the swing rod 602 through the slide groove 604, causing the movable plates 6 on both sides to unfold outward, forming a large area of ​​air resistance plates.

[0041] The drive motor continues to work, keeping the lead screw 4 rotating. Due to the cooperation of the guide pin 403 with the reciprocating spiral groove 402 and the reversing grooves 405 at both ends, the support member 202 will drive the unfolded movable plate 6 to reciprocate and extend and unfold. The action can significantly disturb the airflow and generate greater aerodynamic resistance than the fixed plate, thereby achieving auxiliary speed reduction.

[0042] After braking is completed, the drive motor will completely retract the support 202, and the movable plate 6 will retract to the guide plate posture under the action of the return spring. The drive push rod 203 will reset the entire system to the driving state of mode one.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent chassis system for beach buggies, characterized in that: Includes chassis (1), battery (101) and suspension and support system (2) behind chassis (1). The support system (2) includes a swing member (201) and a support member (202) telescopically mounted on the swing member (201). A drive push rod (203) is provided between the chassis (1) and the swing member (201). The swing member (201) is provided with a drive shaft (3) that rotates inside. The drive shaft (3) is connected to a lead screw (4). The support member (202) is provided with a drive sleeve (5) that is connected to the lead screw (4). The drive shaft (3) is connected to a drive motor. The chassis (1) is provided with a support shaft (102) that is rotatably connected to the drive shaft (3), and the drive shaft (3) is rotatably sleeved on the support shaft (102); One end of the support member (202) is connected to the lead screw (4) for transmission, and the other end is provided with a support plate (204). The swing member (201) is driven by the push rod (203) to form a support angle with the ground, and further forms effective support with the ground by the extension of the support member (202), thereby enabling the ATV to get out of trouble.

2. The intelligent chassis system for beach buggies according to claim 1, characterized in that: The transmission shaft (3) is provided with a first bevel gear (301), and the lead screw (4) is provided with a second bevel gear (401) that meshes with the first bevel gear (301).

3. The intelligent chassis system for beach buggies according to claim 1, characterized in that: The lead screw (4) is symmetrically arranged on both sides of the support member (202), and the support member (202) is symmetrically provided with transmission sleeves (5) that are adapted to the lead screw (4).

4. The intelligent chassis system for beach buggies according to claim 3, characterized in that: The lead screw (4) is a bidirectional reciprocating lead screw, which includes a reciprocating helical groove (402), and the transmission sleeve (5) is provided with a guide pin (403) that cooperates with the reciprocating helical groove (402).

5. The intelligent chassis system for beach buggies according to claim 4, characterized in that: An electromagnetic clutch is provided between the drive shaft (3) and the drive motor, and the electromagnetic clutch is connected to the control room of the ATV.

6. The intelligent chassis system for beach buggies according to claim 1, characterized in that: The support member (202) has symmetrical movable plates (6) for reducing resistance or pushing sand on both sides. The support member (202) includes symmetrically arranged support tubes (205). The movable plate (6) is rotatably mounted on the support tube (205). The support plate (204) has symmetrically arranged drive cylinders (601) for driving the corresponding movable plate (6) to swing.

7. The intelligent chassis system for beach buggies according to claim 6, characterized in that: The movable plate (6) includes a swing rod (602), and the drive cylinder (601) includes a drive rod (603) connected to the swing rod (602). The swing rod (602) is provided with a sliding groove (604) that cooperates with the drive rod (603). The drive rod (603) and the sliding groove (604) are connected by a pin.

8. The intelligent chassis system for beach buggies according to claim 7, characterized in that: The transmission sleeve (5) is fixed at one end of the support tube (205). The transmission sleeve (5) extends into the support tube (205) on the side end near the support tube (205) to form a telescopic bladder (7). The telescopic bladder (7) is connected to the drive cylinder (601) through a flexible tube. The lead screw (4) is placed inside the support tube (205) and a stop plate (404) that cooperates with the telescopic bladder (7) is fixed at one end.

9. The intelligent chassis system for beach buggies according to claim 8, characterized in that: The drive rod (603) is connected to a piston that cooperates with the drive cylinder (601). A return spring is provided between the piston and the drive cylinder (601). A pressure relief valve (605) is provided on the drive cylinder (601).

10. The intelligent chassis system for beach buggies according to claim 1, characterized in that: The lead screw (4) includes a reciprocating spiral groove (402) and a reversing groove (405) located at both ends of the reciprocating spiral groove (402). The drive push rod (203) is a servo push rod; The support plate (204) is provided with a number of protruding rods (206) to increase the support resistance between it and the ground. The drive push rod (203) is connected to the control room of the beach buggy; The telescopic bladder (7) is equipped with a one-way air extraction valve.

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