Miniature double-motor four-wheel differential negative pressure racing model trolley

Abstract

A miniature double-motor four-wheel differential negative pressure racing model trolley comprises a chassis, axles, walking wheels, transmission mechanisms and a road holding force auxiliary mechanism, the chassis is fixedly connected with the front axle and the rear axle, the walking wheels are installed at the two ends of the axles, and the transmission mechanisms are connected between the two ends of one axle and the walking wheels installed on the axle respectively. The transmission mechanism and the road holding auxiliary mechanism are both arranged on the bottom frame. The walking wheels on the left side and the right side of the axle are driven by respective transmission mechanisms to rotate at different speeds, speed difference is generated by the walking wheels on the two sides, transmission steering is achieved, and stable steering of the trolley is guaranteed. The road holding auxiliary mechanism provides extra pressure for the racing model trolley, so that the racing model trolley achieves high friction force, and rapid and stable steering is achieved. According to the utility model, extra pressurization and differential steering of the trolley are realized, the size is small, the weight is light, the road holding force is strong, the steering speed is high, and the sensitivity is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a model trolley for racing, belonging to the model car technical field. BACKGROUND

[0002] Model racing competition projects will use racing model trolleys. At present, common racing model trolleys are relatively large in size, are not flexible enough in steering, and do not have additional downward pressure to provide high friction when steering, so that the steering speed is relatively low.

[0003] The size of a common general standard racing model trolley is generally in the range of 20cm*15cm to 30cm*20cm, and generally depends on counterweight and large batteries to provide grip and kinetic energy. Meanwhile, the larger the volume of the model trolley, the lower the design difficulty and technical barriers, and the lower the speed and sensitivity that can be achieved. For small-radius curves, a larger-sized trolley is slightly clumsy and cannot achieve high-speed track running. In order to improve the upper limit speed and sensitivity of the trolley, the weight of the trolley needs to be reduced, and the size and volume need to be reduced, but the grip is also reduced.

[0004] The steering speed of a common racing model trolley is generally below 2m / s, and the low steering speed is to ensure stability and accuracy to avoid slipping or leaving the track. SUMMARY

[0005] The utility model provides a small-sized, light-weight, high-grip, high-steering-speed and high-sensitivity miniature double-motor four-wheel differential negative pressure racing model trolley to solve the problems of the prior art.

[0006] The miniature double-motor four-wheel differential negative pressure racing model trolley of the utility model adopts the following technical scheme:

[0007] The racing model trolley comprises a chassis, axles, walking wheels, a transmission mechanism and a grip auxiliary mechanism, the chassis is fixedly connected with two front and rear axles, the axles are installed with walking wheels at both ends, one set of transmission mechanism is connected between the walking wheels at both ends of one of the axles and the walking wheels installed thereon, respectively, and the transmission mechanism and the grip auxiliary mechanism are arranged on the chassis.

[0008] The axle is a straight axle.

[0009] The left and right sides of the chassis are both provided with fixing members, and the two front and rear axles are fixedly connected between the fixing members.

[0010] The transmission mechanism comprises a driving motor, a driving gear and a driven gear, the driving motor is installed on the chassis, the driving gear is installed on the rotating shaft of the driving motor, and the driven gear is connected with the walking wheels and engaged with the driving gear.

[0011] The ground adhesion auxiliary mechanism comprises an auxiliary motor and a paddle, the auxiliary motor is installed on the chassis, the rotating shaft of the auxiliary motor is upward and reversely installed with the paddle.

[0012] The chassis is further provided with a control unit, a signal detection unit and a ground adhesion controller, the transmission mechanism (driving motor) is electrically connected with the control unit, the control unit is electrically connected with the signal detection unit, and the ground adhesion controller is electrically connected with the control unit.

[0013] When the above trolley runs, the walking wheels on the left and right sides of the axle are driven by the respective transmission mechanisms to rotate at different speeds, the walking wheels on the two sides generate a speed difference, differential steering is realized, and stable steering of the trolley is ensured.

[0014] The trolley has the following characteristics:

[0015] 1. A small trolley body is adopted, the weight is reduced, and the operation is more sensitive.

[0016] 2. The downward thrust ground adhesion mode is used, additional downward pressure is provided when the trolley turns, and the turning speed is improved.

[0017] 3. The differential steering mode is used, and the turning is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the miniature double-motor four-wheel differential negative pressure racing model trolley.

[0019] In the figure: 1. chassis; 2. walking wheel; 3. axle; 4. control unit; 5. fixing piece; 6. driving gear; 7. signal monitoring system; 8. auxiliary bottom plate; 9. auxiliary motor; 10. grip controller; 11. driving motor; 12. paddle; 13. driven gear; 14. detection plate, 15. photoelectric sensor. DETAILED DESCRIPTION

[0020] As Figure 1 shown, the utility model discloses a miniature double-motor four-wheel differential negative pressure racing model car, including chassis 1, axle 3, walking wheel 2, transmission mechanism 6, grip auxiliary mechanism, control unit 4, signal detection unit 7 and grip controller 10.

[0021] The left and right sides of chassis 1 are provided with fixing pieces 5, and the fixing pieces 5 are fixedly connected with front and rear two axles 3, the axle 3 is a long straight shaft, walking wheels 2 are installed at both ends of the axle 3, and the walking wheels 2 rotate around the axle 3. Both ends of one axle 3 (front axle) are connected with a set of transmission mechanisms 6 respectively.

[0022] The transmission mechanism 6 includes a driving motor 11, a driving gear 6 and a driven gear 13, the driving motor 11 is installed on the chassis 1, the driving gear 6 is installed on the rotating shaft of the driving motor 11, and the driven gear 13 is connected with the walking wheel 2 and is engaged with the driving gear 6. The driven gear 13 can be an integral structure with the walking wheel 2, so that the walking wheel 2 is provided with the driven gear 13, and integrated processing and installation are realized.

[0023] The grip auxiliary mechanism includes an auxiliary bottom plate 8, an auxiliary motor 9 and a paddle 12. The left and right sides of the chassis 1 are provided with auxiliary bottom plates 8, and two auxiliary motors 9 are installed on each side of the auxiliary bottom plate 8, the rotating shaft of the auxiliary motor 9 is in an upward vertical state, the paddle 12 is reversely installed on the rotating shaft of the auxiliary motor 9, and the paddle 12 generates downward thrust when rotating, instead of upward lift.

[0024] The chassis 1 is also provided with a control unit 4, a signal detection unit 7 and a grip controller 10. The driving motors 11 in the two sets of transmission mechanisms 6 are electrically connected with the control unit 4, the control unit 4 is connected with the signal detection unit 7, and the grip controller 10 is connected with the control unit 4. The control unit 4 controls the rotating speed of the driving motors 11 on both sides of the axle 3, so that the walking wheels 2 on both sides rotate at different speeds, and differential steering of the car is realized. The auxiliary motor 9 is electrically connected with the grip controller 10. The grip controller 10 controls the operation of the auxiliary motor 9, drives the paddle 12 to rotate, generates downward thrust, and increases the grip of the entire car.

[0025] The signal detection unit 7 comprises a detection plate 14 and photoelectric sensors 15 distributed on the detection plate 14, and up to 20 photoelectric sensors 15 are arranged in an arc shape on the detection plate 14. Based on the principle of the photoelectric sensor, photoelectrons are excited by current, and if the ground is white, the photoelectrons are reflected, and if the ground is black, the photoelectrons are absorbed, and then the signal change is read to detect the photoelectric signal. The photoelectric sensor 16 detects the condition of the ground, converts the change of the optical signal into an electrical signal, and transmits it to the control unit 4. The signal detection unit 7 is equivalent to the eyes to judge the path; the control unit 4 is equivalent to the brain to make path judgment, speed control, etc. The signal detection unit 7 converts the received optical signal into an electrical signal and transmits it to the control unit 4, and the control unit 4 judges whether the grip assistance mechanism needs to be started, and transmits a signal to the grip controller 10 when needed. After receiving the signal, the grip controller 10 controls the auxiliary motor 9 to start and controls the speed thereof. In short, the signal detection unit 7 collects information through identification and transmits it to the control unit 4, which judges and processes the signal and sends it to the grip controller 10, which controls the specific operation execution. The control unit 4 can use an existing controller or a single-chip microcomputer. The grip controller 10 can use an existing motor speed controller (speed regulator).

[0026] The running process of the racing model car is as follows.

[0027] The driving motors 11 on the left and right sides of the axle 3 are synchronously operated, respectively drive the driven gears 13 on the two sides through the driving gears 6 to rotate at different speeds, so that the walking wheels 2 on the two sides generate a speed difference, realize differential steering, and ensure stable steering of the car. The grip controller 10 drives the auxiliary motor 9 to drive the reversely installed paddle 12, generates a downward thrust through the negative pressure below the paddle 12, provides additional pressure for the racing model car, makes it reach a higher friction, and realizes fast and stable steering.

[0028] The size of the model car of the utility model is 13cm*10cm, and the weight is only 130g (without battery), which realizes a low-mass high-speed and very stable running state. The model car successfully realizes small size, high steering speed and high sensitivity. The paddle 12 is reversely installed, and the downward thrust generated by the rotation of the paddle 12 increases the grip and friction of the racing car without increasing the weight of the car body itself. The downward thrust enables the car to be "adsorbed" on the surface of the track, thereby improving the friction between the tire and the track. Differential steering is adopted, and steering is realized by adjusting the speed difference of the left and right wheels. The inner wheel rotates at a lower speed, and the outer wheel rotates at a higher speed, thereby realizing the turning of the car. The model car has the following characteristics:

[0029] 1. Simple structure, simplified design and low maintenance requirement;

[0030] 2. High flexibility: in-place steering capability, various movement modes;

[0031] 3. Control flexibility, precise control;

[0032] 4. Adapt to complex environment: better differential steering performance and reduce the risk of slipping on the track that requires quick U-turn or frequent steering.

Claims

1. A miniature dual-motor four-wheel differential negative pressure racing model car, characterized in that, It includes a base frame, axles, wheels, a transmission mechanism, and a grip assist mechanism. Two axles, one in the front and one in the rear, are fixedly connected to the base frame. Wheels are installed at both ends of the axles. A transmission mechanism is connected between each end of one axle and the wheel installed on it. Both the transmission mechanism and the grip assist mechanism are located on the base frame.

2. The miniature dual-motor four-wheel differential negative pressure racing model car according to claim 1, characterized in that, The axle is a straight axle.

3. The miniature dual-motor four-wheel differential negative pressure racing model car according to claim 1, characterized in that, The base frame is equipped with fixing components on both the left and right sides, and the front and rear axles are fixedly connected between the fixing components on both sides.

4. The miniature dual-motor four-wheel differential negative pressure racing model car according to claim 1, characterized in that, The transmission mechanism includes a drive motor, a drive gear, and a driven gear. The drive motor is mounted on the base frame, the drive gear is mounted on the drive motor shaft, and the driven gear is connected to the traveling wheel and meshes with the drive gear.

5. The miniature dual-motor four-wheel differential negative pressure racing model car according to claim 4, characterized in that, The driven gear and the traveling wheel are an integral structure.

6. The miniature dual-motor four-wheel differential negative pressure racing model car according to claim 1, characterized in that, The grip assist mechanism includes an auxiliary motor and blades. The auxiliary motor is mounted on the base frame, and the shaft of the auxiliary motor faces upward and the blades are mounted in the opposite direction.

7. The miniature dual-motor four-wheel differential negative pressure racing model car according to claim 6, characterized in that, The auxiliary motor is mounted on the base frame via an auxiliary base plate.

8. The miniature dual-motor four-wheel differential negative pressure racing model car according to claim 6, characterized in that, One to four auxiliary motors are mounted on the base frame.

9. The miniature dual-motor four-wheel differential negative pressure racing model car according to claim 1, characterized in that, The base frame is equipped with a control unit, a signal detection unit, and a grip controller. The transmission mechanism is electrically connected to the control unit, the control unit is electrically connected to the signal detection unit, and the grip controller is electrically connected to the control unit.

10. The miniature dual-motor four-wheel differential negative pressure racing model car according to claim 9, characterized in that, The signal detection unit comprises a detection board and photoelectric sensors distributed on the detection board, with the photoelectric sensors arranged in a fan shape on the detection board.

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