CN209809512U - 8-shaped carbon-free trolley - Google Patents

Abstract

The utility model discloses an 8-shaped carbon-free trolley, which belongs to the field of mechanical traditional devices. The utility model can realize the Arabic numeral "8"-shaped obstacle-avoiding movement through the control of a transmission mechanism, specifically: missing teeth in the transmission mechanism When the gear rotates, because the pinion gear meshes with the missing gear, the pinion rotates with the rotation of the missing gear; the turntable is connected with the pinion and rotates with it; one end of the first connecting rod is connected with the turntable, and the other end is connected with the second connecting rod. The rotation of the turntable is converted into the rotation of the steering rod through the first connecting rod and the second connecting rod, and the rotation of the steering rod is finally converted into the rotation of the front wheels. This transmission mechanism is simple and efficient, and consumes less energy. Therefore, the trolley The number of "8" figures that can be walked is large; in addition, through the design of the trapezoidal winding shaft, the driving force of the figure 8 carbon-free trolley can also be changed, making the figure 8 carbon-free trolley run efficiently.

Description

A 8-shaped carbon-free trolley

technical field

The utility model belongs to the field of mechanical traditional devices, is suitable for the design competition of a carbon-free trolley, and specifically refers to an 8-shaped carbon-free trolley.

Background technique

The carbon-free car is a three-wheeled car with 4 joules of gravitational potential energy as the only energy and continuous obstacle avoidance function, realizing carbon-free in the true sense. The carbon-free trolley does not need an external power source to provide power. It just puts heavy objects on the trolley. Through the traction of the rope, the gravitational potential energy of the trolley is transmitted to the car, and then through the transmission mechanism in the car to realize the precise planning path movement of the trolley.

The 8-shaped carbon-free trolley is a carbon-free trolley that converts the gravitational potential energy of heavy objects into the kinetic energy of the trolley, and can realize the movement of the Arabic numeral "8".

At present, most of the 8-shaped carbon-free trolleys have complex structures, and the transmission mechanism consumes more energy, resulting in a long running time step of the 8-shaped carbon-free trolleys, and the number of "8" figures that can be passed is small.

Utility model content

Aiming at the problems existing in the prior art, the utility model discloses an 8-shaped carbon-free trolley. The design of the transmission mechanism of the utility model is simple and efficient. Ensure that the number of "8" characters that the carbon-free trolley of the present utility model can walk through is relatively large; in addition, through the design of the trapezoidal winding shaft, the radius of the winding shaft of the present utility model is finally changed, so the figure 8 can also be changed. The driving force of the carbon-free trolley changes, making the 8-shaped carbon-free trolley run efficiently.

The utility model is achieved in that:

An 8-shaped carbon-free trolley includes a bottom plate, and the bottom plate is provided with a right wheel and a left wheel with the same size, which is a three-wheel layout structure. Above the bottom plate, a bracket is arranged between the right wheel and the left wheel, a turntable is arranged on the top of the bracket, and a trapezoidal winding shaft is arranged on the lower side of the bracket, and the trapezoidal winding shaft includes a thick end part and a thin end part ; A weight block is placed on the turntable, and at the same time, the thread is wound on the weight block and passed through the turntable, and the thread is wound on the trapezoidal winding shaft. When the weight block is placed from the turntable, the weight block descends, and the wire wound on the winding shaft drives the winding shaft to rotate, and then the gravitational potential energy of the weight block is converted into the kinetic energy of the carbon-free trolley through the transmission mechanism.

The rear wheel gear, the main gear, the missing tooth gear, the turntable, the pinion, the first connecting rod, the second connecting rod, the front wheel bracket, and the steering rod constitute the transmission mechanism of the carbon-free trolley. The carbon-free trolley of the utility model passes through the transmission mechanism. Control, can realize the Arabic numeral "8" font obstacle avoidance movement.

The thin end part of the trapezoidal winding shaft is connected with the main gear, and the main gear is meshed with the rear wheel gear; the thick end part of the trapezoidal winding shaft is connected with the tooth-missing gear, and the tooth-missing gear is divided into a toothed part and a tooth-missing part. The design of the trapezoidal winding shaft can effectively realize the large starting torque of the trolley, the trolley moves smoothly after starting, and decelerates when it stops.

The toothless gear is connected with a pinion at the front end of the trolley, and the toothed part of the toothless gear is meshed with the pinion; the pinion is connected with a turntable, and the turntable is connected to one end of the first connecting rod. The other end of bar is connected with second connecting rod, is connected with steering rod on the vertical direction of second connecting rod, and steering rod is fixed on base plate, and connects front-wheel by steering rod at base plate lower end.

Due to the connection between the above components and the meshing connection relationship, the kinematic relationship is: the rotation of the winding shaft is transformed into the rotation of the main gear, and the rear wheel gear is meshed with the main gear, so the rear wheel gear rotates with the main gear ; The rotation of the rear wheel gear drives the front wheel, the left wheel and the right wheel to move forward. When the winding shaft rotates, the toothless gear rotates together, the pinion meshes with the toothless gear, and rotates with the toothless gear, the turntable is connected with the pinion and rotates with it, and one end of the first connecting rod is connected with the turntable. One end is connected with the second connecting rod, so that the rotation of the turntable is transformed into the rotation of the steering rod through the first connecting rod and the second connecting rod. is the rotation of the front wheel.

Further, the pinion gear is supported by the first bearing; the toothless gear and the main gear are supported by the second bearing; the rear wheel gear is supported by the third bearing.

Further, the front wheels are arranged on the lower end of the bottom plate through the front wheel bracket.

Further, the rotation of the steering rod is converted into the rotation of the front wheel; the toothless gear is divided into a toothed part and a toothless part; when the toothless gear turns to the toothless part, the pinion does not mesh with the toothless gear. The direction of the wheel remains unchanged; when the missing gear turns to the toothed part, the pinion meshes with the missing gear, at this time the direction of the front wheel changes, and the final path of the trolley is a path similar to the Arabic numeral 8.

Further, the rear wheel gear, the main gear, the missing tooth gear, the turntable, the pinion, the first connecting rod, the second connecting rod, the front wheel bracket, and the steering rod constitute the transmission mechanism of the carbon-free trolley. By controlling the transmission mechanism gear The gear ratio of the gear adjusts the walking path of the trolley. The number of teeth of the transmission mechanism gear is different, and the shape of the figure 8 is different.

Further, the trapezoidal winding shaft controls the change of the radius of the trapezoidal winding shaft through the difference between the thick end part and the thin end part, and the change of the radius changes the driving force of the trolley; the radius of the thick end part is larger than the radius of the thick end part, The pushing force of the thread at the butt portion is greater than that at the butt portion.

The beneficial effects of the utility model and the prior art are:

1) In the utility model, the rear wheel gear, the main gear, the missing tooth gear, the turntable, the pinion gear, the first connecting rod, the second connecting rod, the front wheel bracket and the steering rod constitute the transmission mechanism of the carbon-free trolley. When the missing gear in the mechanism rotates, the pinion rotates with the rotation of the missing gear because the pinion meshes with the missing gear; the turntable is connected with the pinion and rotates with it; one end of the first connecting rod is connected with the turntable, and One end is connected with the second connecting rod, so that the rotation of the turntable is transformed into the rotation of the steering rod through the first connecting rod and the second connecting rod, and the rotation of the steering rod is finally converted into the rotation of the front wheel. The carbonless trolley is controlled by the above transmission mechanism. It can realize the Arabic numeral "8"-shaped obstacle avoidance movement, and the transmission mechanism of the utility model is simple and efficient, and consumes less energy, so the trolley of the utility model can pass through a large number of "8" characters;

2) The trapezoidal winding shaft of the 8-shaped carbon-free trolley of the utility model is divided into a thick end part and a thin end part, that is, the radius of the winding shaft is variable, so the 8-shaped carbon-free trolley can be changed by controlling the winding position. The driving force changes; the design of the trapezoidal winding shaft realizes the starting of the trolley and the falling of the object from low speed to deceleration, reducing the energy lost due to collision, and can effectively realize the large starting torque of the trolley, the trolley moves smoothly after starting, and decelerates when it stops , making the 8-shaped carbon-free trolley run efficiently.

Description of drawings

Fig. 1 is the main body figure of the 8-shaped carbon-free trolley of the utility model;

Fig. 2 is the schematic diagram of the transmission device of the 8-shaped carbon-free trolley of the utility model;

Fig. 3 is a schematic diagram of the tooth-missing gear of the 8-shaped carbon-free trolley of the utility model

In the figure, 1-turntable, 2-bracket, 3-right wheel, 4-trapezoidal winding shaft, 41-thick end part, 42-thin end part, 5-bottom plate, 6-front wheel, 7-left wheel, 8-rear Wheel gear, 9-main gear, 10-missing gear, 11-turntable, 12-pinion, 13-first connecting rod, 14-second connecting rod, 15-front wheel bracket, 16-steering rod, 17- First bearing, 18-second bearing, 19-third bearing 19.

Detailed ways

In order to make the purpose, technical solutions and effects of the utility model clearer and clearer, the following examples are given to further describe the utility model in detail. It should be pointed out that the specific implementation described here is only used to explain the utility model, and is not intended to limit the utility model.

As shown in Figures 1 and 2, the 8-shaped carbon-free trolley of the present invention includes a turntable 1, a bracket 2, a right wheel 3, a winding shaft 4, a thick end portion 41, a thin end portion 42, a bottom plate 5, and a front wheel 6. Left wheel 7, rear wheel gear 8, main gear 9, missing tooth gear 10, turntable 11, pinion gear 12, first connecting rod 13, second connecting rod 14, front wheel bracket 15, steering rod 16, first bearing 17, The second bearing 18, the third bearing 19.

The connections are as follows:

By being provided with the same size right wheel 3, left wheel 7 on base plate 5. Above the base plate 5, between the right wheel 3 and the left wheel 7, a support 2 is arranged, the top of the support 2 is provided with a turntable 1, and the lower side of the support 2 is provided with a trapezoidal winding shaft 4, and the trapezoidal The bobbin 4 includes a thick end part 41 and a thin end part 42. The thick end part 41 and the thin end part 42 can control the radius of the bobbin 4 to change, so the push of the 8-shaped carbon-free trolley can be changed by controlling the winding position. force changes.

The thin end part 42 of the trapezoidal bobbin 4 is connected with the main gear 9 , and the main gear 9 is meshed with the rear wheel gear 8 ; the thick end part 41 of the trapezoidal bobbin 4 is connected with the missing tooth gear 10 .

As shown in Figure 3, the toothless gear 10 is divided into a toothed part and a toothless part; the toothless gear 10 is connected with a pinion 12 at the front end of the trolley, and the toothed part of the toothless gear 10 meshes with the pinion 12 Connection; the pinion 12 is connected with a turntable 11, and the turntable 11 is connected to one end of the first connecting rod 13, and the other end of the first connecting rod 13 is connected to the second connecting rod 14, and the second connecting rod 14 Be connected with steering rod 16 in the vertical direction, and steering rod 16 is fixed on the base plate 5, and connects front-wheel 6 at base plate 5 lower ends by steering rod 16, and front-wheel 6 is arranged on the lower end of base plate 5 by front-wheel support 15.

The pinion gear 12 is supported by the first bearing 17; the toothless gear 10 and the main gear 9 are supported by the second bearing 18; the rear wheel gear 8 is supported by the third bearing 19. Rear wheel gear 8, main gear 9, missing tooth gear 10, rotating disk 11, pinion 12, first connecting rod 13, second connecting rod 14, front wheel support 15, steering rod 16 constitute the transmission mechanism of carbonless dolly.

A weight block is placed on the turntable 1, and at the same time, the thread is wound on the weight block and passed through the turntable 1, and the thread is wound on the trapezoidal winding shaft 4; Wound on the trapezoidal winding shaft 4, when the weight block is placed from the turntable 1, the weight block descends, and the wire wound on the trapezoidal winding shaft 4 drives the trapezoidal winding shaft 4 to rotate, and then the gravitational potential energy of the weight block is transformed into The kinetic energy of a carbon-free car.

The concrete working principle of the utility model is:

Place a weight on the turntable 1, and at the same time wind the wire on the weight block through the turntable 1 and wind the wire on the trapezoidal winding shaft 4. The wire drives the trapezoidal winding shaft 4 to rotate, and the rotation of the trapezoidal winding shaft 4 is transformed into the rotation of the main gear 9. The rear wheel gear 8 meshes with the main gear 9 and rotates with it. The rotation of the rear wheel gear 8 drives the front wheel 6, the left wheel 2 and the Right wheel 3 moves forward. When the trapezoidal bobbin 4 rotates, the toothless gear 10 rotates together, the pinion 12 meshes with the toothless gear 10, and rotates with the toothless gear 10, and the turntable 11 is connected with the pinion 12 and rotates together with it. One end of a connecting rod 13 is connected with the turntable 11, and one end is connected with the second link 14, so that the rotation of the turntable 11 is transformed into the rotation of the steering rod 16 through the first connecting rod 13 and the second connecting rod 14, and the steering rod 16 is connected with the front wheel The bracket 15 is connected, and the front wheel bracket 15 fixes the front wheel 6, and the rotation of the steering rod 16 is then transformed into the rotation of the front wheel 6. Since the tooth surface of the tooth-missing gear 10 has no teeth, when the tooth-missing gear 10 turns to the tooth-missing part , the pinion 12 does not mesh with the tooth-missing gear 10, and the direction of the front wheel 6 remains unchanged at this time. The direction of the 8-shaped carbon-free car is changed, and the final path of the 8-shaped carbon-free car is a path similar to the Arabic numeral "8". The walking path of the 8-shaped carbon-free trolley can be adjusted by controlling the gear ratio of the gear of the transmission mechanism.

The trapezoidal winding shaft of the carbon-free trolley is divided into a thick end part and a thin end part. The part that pulls the rope to provide power for the trolley at the beginning is the thick end part of the trapezoidal winding shaft 4, which can provide faster power for the trolley; falling objects are inevitable Can collide with the dolly, so when the object is about to collide with the dolly, the drag rope has been wound around the thin end part of the trapezoidal winding shaft 4, which can reduce the falling speed of the object and reduce the energy loss of the collision between the object and the dolly.

The formula M=F*R can be used, where M represents the moment, F represents the magnitude of the force, and R represents the length of the moment arm. When the force must be R, the bigger the moment, the bigger the torque, and the faster the rotation, the faster the car starts; when M has reached a certain size and remains unchanged, R becomes smaller, and F will increase, so that the object will decelerate quickly.

There are many specific application ways of the utility model, and the above descriptions are only the preferred implementation modes of the utility model. Improvements, these improvements should also be regarded as the protection scope of the present utility model.

Claims (6)

1. An 8-shaped carbon-free trolley comprises a bottom plate (5), wherein right wheels (3) and left wheels (7) with the same size are arranged on the bottom plate (5), and the 8-shaped carbon-free trolley is characterized in that a support (2) is arranged above the bottom plate (5) and between the right wheels (3) and the left wheels (7), a turntable (1) is arranged at the top end of the support (2), a trapezoidal winding shaft (4) is arranged on the lower side of the support (2), and the trapezoidal winding shaft (4) comprises a thick end part (41) and a thin end part (42); a weight is placed on the rotary table (1), and meanwhile, a wire is wound on the weight and passes through the rotary table (1) and is wound on the trapezoidal winding shaft (4); the thin end part (42) of the trapezoidal winding shaft (4) is connected with a main gear (9), and the main gear (9) is meshed with the rear wheel gear 8; the thick end part (41) of the trapezoidal winding shaft (4) is connected with a tooth-missing gear (10), and the tooth-missing gear (10) is divided into a toothed part and a tooth-missing part; the front end part of the trolley of the gear lacking (10) is connected with a small gear (12), and a toothed part of the gear lacking (10) is meshed with the small gear (12); pinion (12) be connected with carousel (11), carousel (11) connect in the one end of first connecting rod (13), the other end and the second connecting rod (14) of first connecting rod (13) are connected, be connected with steering column (16) on the vertical direction of second connecting rod (14), steering column (16) are fixed in on bottom plate (5) to connect front wheel (6) through steering column (16) at bottom plate (5) lower extreme.

2. The carbon-free trolley of the type 8 as claimed in claim 1, characterized in that said pinion (12) is supported by a first bearing (17); the gear with missing teeth (10) and the main gear (9) are supported by a second bearing (18); the rear wheel gear (8) is supported by a third bearing (19).

3. The carbon-free trolley in the shape of a letter 8 as claimed in claim 1, wherein the front wheels (6) are arranged at the lower end of the bottom plate (5) through front wheel brackets (15).

4. The carbon-free trolley of the 8-shaped type is characterized in that the carbon-free trolley is converted into the rotation of the front wheels (6) through the rotation of the steering rod (16); the tooth-missing gear (10) is divided into a tooth part and a tooth-missing part; when the gear (10) with missing teeth rotates to the gear part with missing teeth, the pinion (12) is not meshed with the gear (10) with missing teeth, and the direction of the front wheel (6) is kept unchanged; when the gear (10) with the missing teeth rotates to a part with the teeth, the pinion (12) is meshed with the gear (10) with the missing teeth, the direction of the front wheel (6) is changed, and finally the path of the trolley is similar to the path of the Arabic numeral 8.

5. The 8-shaped carbon-free trolley according to claim 4, characterized in that the rear wheel gear (8), the main gear (9), the gear (10) with missing teeth, the turntable (11), the pinion (12), the first connecting rod (13), the second connecting rod (14), the front wheel bracket (15) and the steering rod (16) form a transmission mechanism of the carbon-free trolley, and the walking path of the trolley is adjusted by controlling the gear ratio of the transmission mechanism.

6. The carbon-free trolley with the shape of 8 as claimed in claim 1, wherein the trapezoid bobbin (4) controls the change of the radius of the trapezoid bobbin (4) through the difference of the thick end part (41) and the thin end part (42), and the change of the radius changes the change of the pushing force of the trolley; the radius of the butt portion (41) is larger than the radius of the butt portion (41), and the line is located at the butt portion (41) with a greater urging force than at the butt portion (41).