CN107754327B

CN107754327B - Intelligence-developing pile-winding toy car

Info

Publication number: CN107754327B
Application number: CN201610674762.9A
Authority: CN
Inventors: 梁军; 梁慧妍
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-16
Filing date: 2016-08-16
Publication date: 2019-12-24
Anticipated expiration: 2036-08-16
Also published as: CN107754327A

Abstract

The invention discloses an intelligent pile winding toy car, which comprises a car frame, wherein a prime moving mechanism is arranged on the car frame, the prime moving mechanism is connected with a driving mechanism, the driving mechanism is connected with a steering transmission mechanism, and the steering transmission mechanism is connected with a steering wheel through a rocker arm component; the steering transmission mechanism comprises a connecting rod assembly, one end of the connecting rod assembly is connected with the transmission mechanism, the other end of the connecting rod assembly is connected with a rocker arm assembly, and the rocker arm assembly is connected with a steering wheel. The invention has convenient assembly, easy part replacement, can realize the quick switching between the S-shaped track and the 8-shaped track, has wide parameter adjusting range and can quickly adjust the motion track of the trolley according to various conditions.

Description

Intelligence-developing pile-winding toy car

Technical Field

The invention relates to a toy or a competition tool or a teaching tool, in particular to an educational pile winding toy car.

Background

Along with the improvement of energy conservation and environmental protection consciousness of people in recent years, the carbon-free trolley is popular among colleges and universities as one of comprehensive engineering training and competition projects of college students in the department of industry. The kinetic energy of the carbon-free trolley is completely provided by gravitational potential energy, the carbon-free concept of zero emission is embodied, and the structural schematic diagram of the carbon-free trolley is shown in figure 1. The carbon-free trolley has two pile winding modes, one mode is that the carbon-free trolley automatically runs an S-shaped track to bypass dozens of piles which are arranged on a straight line at equal intervals, and the other mode is that the carbon-free trolley automatically runs an 8-shaped track to bypass two piles which are arranged on a table, wherein the former mode is easier, the number of works is large, and the latter mode is high in difficulty and the number of works is small. The two track around pile matches are not performed in the same group, but in groups, and the tracks of the two trolleys are shown in fig. 2 and fig. 3. College students develop carbon-free trolleys to compete fairly in an automatic pile winding mode, and due to the difficulty and the coexistence, the competition can be participated by people, and the spontaneous effect of stimulating vast workshops to search for the mechanical structure secret in schools is shown by the college students, namely, the competitors can master a great deal of engineering knowledge of how to realize energy conversion, balance of trolley bodies, driving of trolleys, periodic steering of trolleys and the like to different degrees.

Utilize the automation of potential energy to wind pile carbonless dolly, confine to among the university student' S comprehensive engineering training match nowadays, during the match, mostly be the automatic S-shaped orbit of walking around the pile, a small number of works of walking 8 font orbit around the pile are cam or sheave and reverse the design and form, and the control range is all little, and neither two kinds of orbits realize compound works, also do not have the cordwood system work that adopts universal joint spare.

The design of the carbon-free trolley is mostly divided into six modules of a frame, a prime moving mechanism, a steering mechanism, a traveling mechanism and a fine adjustment mechanism. In the existing design, a cam or a grooved wheel is mostly used for realizing the 8-shaped track of the trolley. The cam and the grooved pulley have the following defects: the contour processing is difficult, and the precision is difficult to ensure; the sliding friction energy loss is large; the size is difficult to change, the adjustability of the track parameter of the carbon-free trolley is limited, and difficulty is brought to the adjustment of the track of the wound pile.

And (4) preliminary retrieval is carried out, the carbon-free trolley with the S track does not have a universal connecting piece with the track parameter rapidly adjusted to a large extent, namely building block type integration innovation of the carbon-free trolley does not appear. Specifically, there are adjustments that are easy to implement, such as adjustment of steering frequency and steering amplitude on a crank link mechanism; few adjustments are easily made, and universal attachment flanges have not been retrieved for the attachment of various wheels to various axles.

Disclosure of Invention

In order to solve the problems, the invention provides an intelligent pile winding toy car. The invention has convenient assembly, easy part replacement, can realize the quick switching between the S-shaped track and the 8-shaped track, has wide parameter adjusting range and can quickly adjust the motion track of the trolley according to various conditions.

In order to achieve the technical effects, the technical scheme of the invention is as follows:

an intelligent pile winding toy car comprises a frame, wherein a prime mover is arranged on the frame, the prime mover is connected with a driving mechanism, the driving mechanism is connected with a steering transmission mechanism, and the steering transmission mechanism is connected with a steering wheel through a rocker arm component; the steering transmission mechanism comprises a connecting rod assembly, one end of the connecting rod assembly is connected with the transmission mechanism, the other end of the connecting rod assembly is connected with a rocker arm assembly, and the rocker arm assembly is connected with a steering wheel.

In a further improvement, the connecting rod assembly comprises a first connecting rod and a second connecting rod, the connecting rod assembly is provided with a long hole for the first connecting rod and the second connecting rod to slide mutually, and the long hole penetrates through the force adjusting assembly; the frame is fixed with a limiting mechanism for limiting the swing amplitude of the steering wheel.

Further improvement, slot hole on first connecting rod and the second connecting rod is all not less than two, adjust power subassembly including the bolt that passes the slot hole, the cover is equipped with the spring on the bolt, and the bolt has the tight nut of piece together through threaded connection, and the tight nut of piece together passes through the positive pressure between spring regulation first connecting rod and the second connecting rod.

In a further improvement, the rocker arm assembly comprises an adjustable limiting assembly, the adjustable limiting assembly comprises an arc-shaped slideway, and the connecting rod assembly is connected with the arc-shaped slideway in a sliding manner; the frame is fixed with a limiting mechanism for limiting the swing amplitude of the steering wheel.

In a further improvement, the adjustable limiting assembly comprises a plurality of arc-shaped slideways which are arranged in a concentric circle.

In a further improvement, the rocker arm assembly is provided with a plurality of connecting holes for changing the length of the connecting rod assembly.

In a further improvement, two ends of the connecting rod assembly are respectively connected with the transmission mechanism and the rocker arm assembly through threaded parts, the thread directions of the threaded parts at two ends of the connecting rod assembly are opposite, and the length of the rotating connecting rod assembly is adjusted through rotating the connecting rod assembly; the driving mechanism comprises a crank driving disc, and a plurality of adjusting holes for adjusting the driving radius of the connecting rod assembly are formed in the crank driving disc.

In a further improvement, the rocker arm assembly comprises a transverse rocker arm and a right-angle rocker arm, and a rocker arm connecting rod is hinged between the transverse rocker arm and the right-angle rocker arm; the transverse rocker is connected with a steering transmission mechanism.

The limiting mechanism comprises two adjustable screw rods fixed on the frame, and a front fork connected with the steering wheel is provided with a limiting strip matched with the adjustable screw rods; the swing amplitude of the steering wheel is adjusted by rotationally adjusting the length of the adjustable screw rod.

The frame comprises two large wallboards which are oppositely arranged, the two large wallboards are mutually fixed through a first connected cross beam and a second connected cross beam, two ends of the first connected cross beam are respectively connected to the large wallboards through first hubs, and two ends of the second connected cross beam are respectively connected to the large wallboards through second hubs; two small wall plates which are oppositely arranged are fixed on the first connecting body cross beam; the two small wallboards are respectively fixed to the middle part of the third connected cross beam through sixth hubs, two ends of the third connected cross beam are respectively connected to the large wallboard through first special hubs, and the first special hubs comprise mounting holes for mounting vertical bearing seats; the two large wallboards are connected with a walking driving shaft and a power shaft, and two ends of the walking driving shaft are respectively connected with walking wheels through third hubs; a steering driving wheel is arranged at one end of the inner side of the travelling wheel, a travelling driven wheel is arranged at the other end of the inner side of the travelling wheel, and the steering driving wheel and the travelling driven wheel are respectively connected to a travelling driving shaft through a fourth hub; one end of the power shaft is connected with a walking driving wheel through a fifth wheel hub, the other end of the power shaft is connected with a crank driving disc and a steering driven wheel through a second special wheel hub, the second special wheel hub comprises a sliding bearing, and the sliding bearing is sleeved and fixed on the power shaft; the steering driving wheel and the steering driven wheel are mutually meshed and driven through gears, and the walking driving wheel and the walking driven wheel are mutually meshed and driven through the gears; the crank driving disc is connected with the connecting rod assembly through a crank pin shaft; the connecting rod assembly is connected with a rocker arm assembly, and the rocker arm assembly is connected with a steering wheel; the rocker arm assembly comprises a transverse rocker arm and a right-angle rocker arm, and a rocker arm connecting rod is hinged between the transverse rocker arm and the right-angle rocker arm; the transverse rocker is connected with a steering transmission mechanism; the right-angle rocker is hinged on the vertical bearing seat; a multi-groove wire wheel is fixed on the power shaft and comprises a plurality of ring grooves with different diameters;

the first hub, the second hub, the third hub, the fourth hub, the fifth hub and the sixth hub are the same in size and shape.

The invention creatively integrates the functions of automatically moving S-shaped and 8-shaped tracks and winding the pile into a whole, and the pile distance and the pile diameter of the S-shaped track and the 8-shaped track can be completely covered in a larger range, which can be called as the universal pile winding king and has the following advantages:

1. the automatic 8-shaped track winding pile based on the crank connecting rod rocker realizes breakthrough, so that the composite carbon-free trolley integrating two tracks winding pile is realized;

2. the connection of most of parts is carried out by adopting universal connecting pieces, and more than ten parts are needed;

3. the universal connection hub interfaces are easy to realize standardization;

4. most of the universal connection hubs are completely universal interchangeable hubs;

5. therefore, the whole vehicle modular structure is formed, can be completely disassembled and quickly disassembled, and a user can quickly and conveniently replace a gear with any tooth number in the gear packet according to the requirement of a pile winding track;

6. automatic pile-winding toy vehicles with different track parameters can be assembled by adopting a simple tool;

7. meeting the high standard requirement of adopting the on-site drawing-lots method to carry out the toy car for fair competitive game.

Drawings

FIG. 1 is a schematic diagram of a potential energy workingstructure of a carbon-free trolley;

FIG. 2 is a schematic view of an S-shaped track;

FIG. 3 is a schematic diagram of a figure-8 trace;

FIG. 4 is a schematic structural view of embodiment 1;

FIG. 5 is a schematic view showing the shaft connection structure of embodiment 1;

FIG. 6 is a schematic structural view of embodiment 2;

FIG. 7 is a schematic structural view of a crank drive disk;

FIG. 8 is a schematic structural view of example 3;

FIG. 9 is a schematic structural view of a rocker arm assembly in embodiment 3;

FIG. 10 is a schematic view showing a structure of a stopper mechanism according to embodiment 3;

FIG. 11 is a schematic structural view of example 4;

FIG. 12 is a schematic structural view of example 5;

FIG. 13 is a schematic structural view of example 6;

fig. 14 is a second schematic structural view of the limiting mechanism in embodiment 3.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

The intelligent pile-winding toy vehicle as shown in fig. 3 and 4 comprises a vehicle frame, wherein a prime mover is arranged on the vehicle frame, the prime mover is connected with a driving mechanism, the driving mechanism is connected with a steering transmission mechanism, and the steering transmission mechanism is connected with a steering wheel 16 through a rocker arm assembly 15; the steering transmission mechanism comprises a connecting rod assembly 13, one end of the connecting rod assembly 13 is connected with the transmission mechanism, the other end of the connecting rod assembly 13 is connected with a rocker arm assembly 15, and the rocker arm assembly 15 is connected with a steering wheel 16.

The frame mainly comprises two large wall plates 1, two small wall plates 3, a first connecting cross beam 2, a second connecting cross beam 14 and a third connecting cross beam 4. For positioning the power shaft 6, the drive shaft 5, etc.

The prime mechanism: the prime mechanism is used for converting the gravitational potential energy of the heavy object into the driving force of the trolley. The rope wheel is adopted for realizing the purpose, the thin rope tied with a heavy object bypasses the rope guide wheel, the other end of the rope is wound on the power shaft 6, the heavy object is released at the highest position to drive the walking wheel 7 to rotate, and the kinetic energy is completely provided by gravitational potential energy to provide motive power for the trolley.

The driving mechanism and the large-amplitude adjusting device thereof: the driving mechanism adopts gear transmission. The steering driving wheel 8 drives the steering driven wheel 9 to increase speed and reduce torque, and then drives the driving shaft 5 to provide power for the rear wheels at the two ends of the driving shaft 5.

Large-amplitude adjustment means in the drive mechanism:

a series of gears with different modules are designed to be matched with the universal connecting hub, so that convenient and quick replacement is realized. The design can change the size of the driving force, so that the trolley can adapt to the walking around the pile on the site surfaces with different friction coefficients. The universal connection hub comprises a first hub 26, a second hub 18, a third hub 28, a fourth hub 29, a fifth hub 30 and a sixth hub 32 which are identical in size and shape, so that quick replacement of parts of each part is realized.

Steering transmission mechanism and its steering frequency big amplitude control device: the steering transmission mechanism functions to transmit the power of the drive shaft 5 to the steering control mechanism and the steered wheels 16. The steering driving wheel 8 on the driving shaft 5 is matched with a steering driven wheel 9 which is sleeved on the power shaft, and the steering driven wheel 8 is connected with a crank driving disc 10 through a second special hub 11, so that the crank driving disc is driven to rotate. The second special hub 11 is connected with the power shaft through a sliding bearing, so that the crank driving disk 10 and the steering driven wheel 9 are freely sleeved on the power shaft

The steering frequency in the steering transmission mechanism is greatly adjusted:

the adjusting device is the same as that in the original driving mechanism, and the swinging frequency of the steering wheel is adjusted by replacing the gear set, so that the track parameter of the trolley in a walking period is changed. As can be seen from figure 4, the universal wheel hub and the pair of steering gears can be quickly disassembled and assembled, and the gear with any tooth number in the gear bag can be quickly replaced according to the needs of users. The middle part of the gear can be provided with a plurality of through holes for reducing weight.

The specific connection structure is as follows:

the frame comprises two large wall plates 1 which are oppositely arranged, the two large wall plates 1 are mutually fixed through a first connected cross beam 2 and a second connected cross beam 14, two ends of the first connected cross beam 2 are respectively connected to the large wall plates 1 through first hubs 26, and two ends of the second connected cross beam 14 are respectively connected to the large wall plates 1 through second hubs 18; two small wallboards 3 which are oppositely arranged are fixed on the first connecting beam 2; the two small wall plates 3 are respectively fixed to the middle of the third connected cross beam 4 through sixth hubs 32, two ends of the third connected cross beam 4 are respectively connected to the large wall plate 1 through first special hubs 27, and the first special hubs 27 comprise mounting holes for mounting the vertical bearing seats 21; the two large wall boards 1 are connected with a walking driving shaft 5 and a power shaft 6, and two ends of the walking driving shaft 5 are respectively connected with walking wheels 7 through third hubs 28; a steering driving wheel 8 is arranged at one end of the inner side of the travelling wheel 7, a travelling driven wheel 81 is arranged at the other end of the inner side of the travelling wheel 7, and the steering driving wheel 8 and the travelling driven wheel 81 are respectively connected to the travelling driving shaft 5 through a fourth wheel hub 29; one end of the power shaft 6 is connected with a walking driving wheel 91 through a fifth hub 30, the other end of the power shaft is connected with a crank driving disc 10 and a steering driven wheel 9 through a second special hub 11, the second special hub 11 comprises a sliding bearing, and the sliding bearing is sleeved and fixed on the power shaft 6; the steering driving wheel 8 and the steering driven wheel 9 are driven by mutual meshing through gears, and the walking driving wheel 91 and the walking driven wheel 81 are driven by mutual meshing through gears; the crank driving disc 10 is connected with a connecting rod component 13 through a crank pin shaft 12; the connecting rod assembly 13 is connected with a rocker arm assembly 15, and the rocker arm assembly 15 is connected with a steering wheel 16; the rocker arm assembly 15 comprises a transverse rocker 19 and a right-angle rocker 20, and a rocker arm connecting rod 17 is hinged between the transverse rocker 19 and the right-angle rocker 20; the transverse rocker 19 is connected with a steering transmission mechanism; the right-angle rocker 20 is hinged on the vertical bearing seat 21; a multi-groove wire wheel 33 is fixed on the power shaft 6, and the multi-groove wire wheel 33 comprises a plurality of circular grooves 331 with different diameters.

The first, second, third, fourth, fifth and sixth hubs 26, 18, 28, 29, 30, 32 are the same size and shape.

So set up has following advantage:

the connection between most of parts is carried out by adopting a universal connecting piece, namely a hub, and more than ten parts are needed; the universal connection hub interfaces are easy to realize standardization; most of the universal connection hubs are completely universal interchangeable hubs; the whole vehicle modular structure is formed, can be completely disassembled and quickly disassembled, and can quickly replace any gear with any number of teeth in the gear packet according to the needs of a user; the automatic pile winding toy car with different track parameters can be assembled by adopting a simple tool, and the building block type quick installation is realized. The arrangement of the multi-groove wire wheel 33 enables the rope to be wound in the groove 331 with different diameters according to requirements, and the rotating speed of the power shaft 6 is adjusted.

Example 2

As shown in fig. 6 and 7, in the embodiment 1, the rocker arm assembly 15 is provided with a plurality of connecting holes 22 for changing the length of the connecting rod assembly 13. The two ends of the connecting rod assembly 13 are respectively connected with the transmission mechanism and the rocker arm assembly 15 through thread parts 23, the thread directions of the thread parts 23 at the two ends of the connecting rod assembly 13 are opposite, and the length of the rotating connecting rod assembly 13 is adjusted through the rotating connecting rod assembly 13. The driving mechanism comprises a crank driving disc 10, and a plurality of adjusting holes 24 for adjusting the driving radius of the connecting rod assembly 13 are formed in the crank driving disc 10.

Thus, different track parameters can be quickly adjusted through the arrangement of the connecting hole 22, the threaded part 23 and the adjusting hole 24 so as to adapt to two parameters of different S-shaped tracks or 8-shaped tracks, which automatically bypass different pile distances and pile diameters, and realize the complete coverage of the track parameters in a larger range.

Example 3

As shown in fig. 8, the S-shaped locus is changed to an 8-shaped locus, and a link adjusting mechanism is provided in addition to embodiment 1: if the connecting rod assembly 13 comprises the first connecting rod 131 and the second connecting rod 132, the connecting rod assembly 13 is provided with a long hole 133 for the first connecting rod 131 and the second connecting rod 132 to slide mutually, and the long hole 133 penetrates through the force adjusting assembly 134; and a limiting mechanism for limiting the swing amplitude of the steering wheel 16 is fixed on the frame. The number of the long holes 133 is not less than two for stable connection.

As shown in fig. 3, when the carbon-free trolley automatically walks around the pile along the 8-shaped track, the working cycle of the deflection angle of the steering wheel and the working cycle of the 8-shaped track are 2:

when the trolley drives from the point A to the point B:

the steering wheel swings under the action of the crank connecting rod mechanism, the deflection angle of the steering wheel is zero at the point A, and then the deflection angle is continuously increased until the point B, and the deflection angle reaches the maximum value; in the process, the steering resistance, the steering driving force, the damping force between the first connecting rod and the second connecting rod and the three forces are equal; the length of the connecting rod is unchanged;

when the trolley drives from the point B to the point C:

when the point B is reached, the steering wheel is limited by the limiting strip, and the deflection angle of the steering wheel keeps the maximum value; meanwhile, the crank connecting rod still rotates, and the damping mechanism on the connecting rod assembly starts to slide due to the limitation of the limiting strip, at the moment, the steering resistance is greater than the damping force, and the damping force is equal to the steering driving force; the process is a continuous change in link length.

When the trolley drives from the point C to the point A:

the steering wheel begins to deflect in the opposite direction at the point C, then continuously reduces, and the deflection angle is zero when reaching the point A; in the process, the damping force, the steering resistance and the steering driving force are equal; the length of the connecting rod is unchanged.

And the motion processes of the AD section, the DE section and the EA section of the trolley can be obtained in the same way.

As shown in fig. 9, the force adjusting assembly 134 includes a bolt 137 passing through the elongated hole 133, the bolt 137 is connected with a tightening nut 138 through threads, a spring 139 is sleeved on the bolt 137, and the tightening nut 138 adjusts the positive pressure between the first link and the second link through the spring 139. A washer 140 is attached to the spring 139.

As shown in fig. 10, the limiting mechanism includes two adjustable screws 135 fixed on the frame, and a limiting strip 136 engaged with the adjustable screws 135 is provided on the front fork connected to the steering wheel 16; the oscillation amplitude of the steerable wheels 16 is adjusted by rotationally adjusting the length of the adjustable screw 135.

Thus, when the steering wheel 16 swings to a certain extent, the limit bar 136 is blocked by the adjustable screw 135, at this time, the crank driving disk 10 continues to drive the connecting rod assembly 13 to move forward, at this time, the first connecting rod 131 and the second connecting rod 132 realize relative sliding through the long hole 133, so that the swinging angle of the steering wheel 16 is maintained for a period of time to realize the movement of the trolley from the point B to the point C. The damping force between the first link 131 and the second link 132 can be adjusted by tightening the nut 138. When the S-shaped track is needed, the limiting strips 136 are removed, the limiting strips do not limit, the damping mechanism on the connecting rod does not slide, the damping force, the steering resistance and the steering driving force are equal in the whole process in the walking process of the trolley, and the length of the connecting rod is unchanged. The walking process is S-shaped. By tightening the tightening nut 138 to increase the damping force, it is ensured that the first link 131 and the second link 132 do not slide relative to each other, and the walking path is S-shaped.

On the contrary, the switching from the S-shaped track to the 8-shaped track can be realized by replacing the connecting rod assembly, and additionally installing the limiting strip and the adjustable limiting assembly such as the adjustable screw 135 and the like on the basis of the automatic S-shaped track winding pile technology of fig. 3 or fig. 5.

As shown in fig. 14, the adjustable limiting component on the limiting mechanism is replaced by a U-shaped baffle 31 connected with an adjusting bolt.

The invention overcomes the defect that the damping force of a sliding pair automatically changes the length of a connecting rod to adapt to the requirement that a steering wheel stays for a period of time at the maximum deflection angle at the moment when the crank driving force automatically senses the action of the limiting device; in the period of time that the steering wheel stays at the maximum deflection angle, the track traveled by the carbon-free trolley is a section of circular arc; the steering wheel intermittently swings → stops → swings → stops, and circularly works, which is a precondition for the whole vehicle to automatically move the 8-shaped track, grasps the matching calculation of the intermittent swinging and stopping time period, and is a sufficient condition for the whole vehicle to automatically move the 8-shaped track and wind the pile; obviously, the novel technology of automatically walking 8-shaped tracks to wind piles based on the crank-connecting rod rocker system can enable the difference between the whole vehicle structure and the carbon-free trolley automatically walking S-shaped tracks to wind piles to be extremely small, and the carbon-free trolley can be integrated because the carbon-free trolley is not difficult to switch.

Example 4

As shown in fig. 11, the structure described in embodiment 3 may be added to that of embodiment 2.

Example 5

As shown in fig. 12, based on embodiment 1, the link adjusting mechanism is an adjustable limiting component on the rocker arm component 15, the adjustable limiting component includes an arc-shaped slideway 25, and the link assembly 13 is slidably connected to the arc-shaped slideway 25; and a limiting mechanism for limiting the swing amplitude of the steering wheel 16 is fixed on the frame. As shown in fig. 3, when the trolley moves from point a to point B, the arc-shaped slideway 25 has a certain resistance to the connecting rod assembly 13, so that the arc-shaped slideway 25 and the connecting rod assembly 13 do not slide relatively. When the trolley moves from the point B to the point C, the rotation angle of the steering wheel 16 is blocked and fixed by the limiting mechanism, and the crank driving disc 10 continues to drive the connecting rod assembly 13 to move forwards, the connecting rod assembly 13 slides on the arc-shaped slide way 25, so that the swing angle of the steering wheel 16 when the trolley moves from the point B to the point C is maintained.

As in example 3, the switching from the figure-8 to the S-shaped track car can be quickly performed by removing the limit bar 136 of the limit mechanism.

Example 6

As shown in fig. 13, on the basis of embodiment 5, the adjustable limiting assembly comprises a plurality of arc-shaped slideways 25 which are arranged in concentric circles.

The above description is only one specific guiding embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention using this concept shall fall within the scope of the invention.

Claims

1. An intelligent pile winding toy car is characterized by comprising a car frame, wherein a prime moving mechanism is arranged on the car frame, the prime moving mechanism is connected with a driving mechanism, the driving mechanism is connected with a steering transmission mechanism, and the steering transmission mechanism is connected with a steering wheel (16) through a rocker arm component (15); the steering transmission mechanism comprises a connecting rod assembly (13), one end of the connecting rod assembly (13) is connected with the transmission mechanism, the other end of the connecting rod assembly (13) is connected with a rocker arm assembly (15), and the rocker arm assembly (15) is connected with a steering wheel (16); the connecting rod assembly (13) comprises a first connecting rod (131) and a second connecting rod (132), a long hole (133) for the first connecting rod (131) and the second connecting rod (132) to slide mutually is formed in the connecting rod assembly (13), and the long hole (133) penetrates through a force adjusting assembly (134); a limiting mechanism for limiting the swing amplitude of the steering wheel (16) is fixed on the frame;

the force adjusting assembly (134) comprises a bolt (137) penetrating through the long hole (133), the bolt (137) is connected with a tightening nut (138) through threads, a spring (139) is sleeved on the bolt (137), and the tightening nut (138) adjusts positive pressure between the first connecting rod and the second connecting rod through the spring (139); the number of the long holes (133) is not less than two;

the limiting mechanism comprises two adjustable screw rods (135) fixed on the frame, and a limiting strip (136) matched with the adjustable screw rods (135) is arranged on a front fork connected with the steering wheel (16); the swing amplitude of the steering wheel (16) is adjusted by rotating and adjusting the length of the adjustable screw rod (135).

2. A puzzle pile-winding toy vehicle according to claim 1, wherein the rocker arm assembly (15) includes an adjustable stop assembly including an arcuate race (25), the linkage assembly (13) being slidably connected to the arcuate race (25); the frame is fixed with a limiting mechanism for limiting the swing amplitude of the steering wheel (16).

3. A puzzle toy vehicle according to claim 2, wherein the adjustable stop assembly comprises a plurality of concentrically arranged arcuate ramps (25).

4. A puzzle toy vehicle according to claim 1, wherein the rocker arm assembly (15) is provided with a plurality of attachment holes (22) for varying the length of the linkage assembly (13).

5. A puzzle pile-winding toy vehicle according to claim 1, wherein the two ends of the connecting rod assembly (13) are respectively connected to the transmission mechanism and the rocker arm assembly (15) through screw threads (23), the screw threads (23) of the two ends of the connecting rod assembly (13) are opposite in direction, and the length of the rotating connecting rod assembly (13) is adjusted by rotating the connecting rod assembly (13); the driving mechanism comprises a crank driving disc (10), and a plurality of adjusting holes (24) for adjusting the driving radius of the connecting rod component (13) are formed in the crank driving disc (10).

6. A puzzle pile-winding toy vehicle according to claim 1, wherein the rocker arm assembly (15) comprises a transverse rocker (19) and a right-angled rocker (20), a rocker link (17) being articulated between the transverse rocker (19) and the right-angled rocker (20); the transverse rocker (19) is connected with a steering transmission mechanism.

7. A puzzle pile-winding toy vehicle according to claim 1, wherein the frame comprises two oppositely disposed large wall panels (1), the two large wall panels (1) are fixed to each other by a first connected cross beam (2) and a second connected cross beam (14), two ends of the first connected cross beam (2) are respectively connected to the large wall panels (1) by first hubs (26), and two ends of the second connected cross beam (14) are respectively connected to the large wall panels (1) by second hubs (18); two small wall plates (3) which are oppositely arranged are fixed on the first connecting cross beam (2); the two small wall plates (3) are respectively fixed to the middle of a third connected cross beam (4) through sixth hubs (32), two ends of the third connected cross beam (4) are respectively connected to the large wall plate (1) through first special hubs (27), and the first special hubs (27) comprise mounting holes for mounting vertical bearing seats (21); the two large wallboards (1) are connected with a walking driving shaft (5) and a power shaft (6), and two ends of the walking driving shaft (5) are respectively connected with a walking wheel (7) through a third hub (28); one end of the inner side of the travelling wheel (7) is provided with a steering driving wheel (8), the other end of the inner side of the travelling wheel (7) is provided with a travelling driven wheel (81), and the steering driving wheel (8) and the travelling driven wheel (81) are respectively connected to the travelling driving shaft (5) through a fourth hub (29); one end of the power shaft (6) is connected with a walking driving wheel (91) through a fifth wheel hub (30), the other end of the power shaft is connected with a crank driving disc (10) and a steering driven wheel (9) through a second special wheel hub (11), the second special wheel hub (11) comprises a sliding bearing, and the sliding bearing is sleeved and fixed on the power shaft (6); the steering driving wheel (8) and the steering driven wheel (9) are mutually meshed and driven through gears, and the walking driving wheel (91) and the walking driven wheel (81) are mutually meshed and driven through gears; the crank driving disc (10) is connected with the connecting rod component (13) through a crank pin shaft (12); the connecting rod assembly (13) is connected with a rocker arm assembly (15), and the rocker arm assembly (15) is connected with a steering wheel (16); the rocker arm assembly (15) comprises a transverse rocker (19) and a right-angle rocker (20), and a rocker arm connecting rod (17) is hinged between the transverse rocker (19) and the right-angle rocker (20); the transverse rocker (19) is connected with a steering transmission mechanism; the right-angle rocker (20) is hinged on the vertical bearing seat (21); a multi-groove wire wheel (33) is fixed on the power shaft (6), and the multi-groove wire wheel (33) comprises a plurality of groove grooves (331) with different diameters;

the first hub (26), the second hub (18), the third hub (28), the fourth hub (29), the fifth hub (30) and the sixth hub (32) are identical in size and shape.