A multi-stage chain drive structure for all-terrain go-karts

Abstract

This invention discloses a multi-stage chain drive structure for all-terrain go-karts, including a first-stage sprocket and chain drive assembly, a second-stage sprocket and chain drive assembly, a two-stage chain drive structure used in conjunction with the engine and the independent suspension and steering knuckle half-shaft assembly of the all-terrain go-kart body, and a third-stage chain drive structure with a chain drive assembly installed on the upper side of the non-independent suspension integral drive axle. The beneficial effects of this invention are: reduced unsprung mass of the drive axle, improved drive axle responsiveness and passenger comfort; the boxless chain drive system is compatible with vertical, horizontal, and geared engines, and can also be used with various engine types such as ordinary CVT engines and go-kart-specific CVT engines with reverse gear as power sources.

Description

Technical Field

[0001] This invention relates to the field of go-kart technology, specifically to a multi-stage chain drive structure for all-terrain go-karts. Background Technology

[0002] Go-karting originated in Eastern Europe in 1940, but it only became popular and rapidly developed in Europe and America in the late 1950s. Due to its ease of driving, safety, and excitement, it quickly swept the world. A go-kart has a very simple structure, consisting of a steel tubular frame, steering system, pedals, fuel tank, drivetrain cover, driver's seat, and crash bars.

[0003] Existing all-terrain go-karts use a rear drive axle that integrates the engine and rear suspension into a single structure. However, this type of drive axle is not well-suited for off-road conditions and also fails to ensure passenger comfort. Therefore, it is imperative to design a new go-kart transmission structure that offers superior performance, high transmission efficiency, off-road capability, and enhanced passenger comfort. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a multi-stage chain drive structure for all-terrain go-karts. This invention is achieved through the following technical solution.

[0005] A multi-stage chain drive structure for all-terrain go-karts includes a first-stage sprocket and chain drive assembly and a second-stage sprocket and chain drive assembly, a two-stage chain drive structure used in conjunction with the engine and the independent suspension and steering knuckle half-shaft assembly of the all-terrain go-kart body, and a third-stage chain drive structure with a chain drive assembly installed on the upper side of the non-independent suspension integral drive axle of the all-terrain go-kart body; the multi-stage chain drive structure includes a two-stage chain drive structure where the first-stage sprocket and chain drive assembly is used in conjunction with the engine and the chain drive assembly is installed on the upper side of the non-independent suspension integral drive axle of the all-terrain go-kart body when the second-stage sprocket and chain drive assembly is not used.

[0006] The engine includes a vertical or horizontal engine that outputs power to the left of the output shaft; a small sprocket is installed on the output shaft of the engine, and a first-stage chain drive support frame installed in a horizontal position connects the small sprocket with a sprocket on the coaxial spline installed on the left or right side of the coaxial hinge bearing seat on the first-stage chain drive support frame installed on the rear fixed support of the engine, and the sprockets are meshed with each other by a chain to form a first-stage sprocket chain drive combination;

[0007] The coaxial hinged bearing housing on the first-stage chain drive support frame mounted on the rear fixed support of the engine and the Y-shaped coaxial hinged bearing housing on the second-stage chain drive support frame mounted coaxially have coaxial splined shafts passing through their bearing holes, and two sprockets are respectively installed on the splined grooves at both ends of the coaxial shaft; the sprocket on the left side is in the same vertical plane as the small sprocket on the output shaft of the engine; the sprocket on the right side is in the same vertical plane as the large sprocket mounted on the constant velocity ball cage universal joint shaft on the right side of the universal joint bearing housing at the end of the second-stage chain drive support frame;

[0008] The engine includes a go-kart-specific CVT engine or electric motor that outputs power to the right of the output shaft. The sprocket mounted on the right side of the coaxial hinge shaft of the first and second stage chain drive support frame, which is installed at the horizontal position at the rear of the dedicated fixed support for the go-kart-specific CVT engine or electric motor or at the vertical position at the lower part of the dedicated fixed support, is kept in the same vertical plane as the small sprocket mounted on the right output shaft of the go-kart-specific CVT engine or electric motor.

[0009] Furthermore, the coaxial hinge bearing seat at the end of the first-stage chain drive support frame, which is fixedly installed at the lower vertical position of the dedicated fixed support for the go-kart CVT engine or motor, maintains parallelism between the two shafts in the same vertical plane as the shaft of the CVT engine or motor output shaft. The chain and the first-stage chain drive assembly installed at the vertical position form an integral structure with the go-kart CVT engine or motor.

[0010] Furthermore, the bearing holes in the coaxial hinged bearing seats at the end of the first-stage chain drive support frame, which is installed horizontally or vertically on the dedicated fixed support for the CVT engine or motor of the go-kart, and the Y-shaped coaxial hinged bearing seats at the upper end of the second-stage chain drive support frame, which are coaxially installed, have coaxial splines passing through them. Two sprockets are installed on the spline grooves at both ends of the coaxial splines. The sprocket on the right side is in the same vertical plane as the small sprocket on the right output shaft of the CVT engine or motor of the go-kart, and the two sprockets on the right side are meshed with a chain. The sprocket on the left side is in the same vertical plane as the large sprocket installed on the universal joint shaft of the constant velocity ball cage at the end of the universal joint bearing seat of the second-stage chain drive support frame, and the two sprocket sets on the left side are meshed with a chain.

[0011] The Y-shaped second-stage chain drive support frame can rotate together with the mounted chain around the hinged coaxial joint to a vertical angle position, or it can rotate to a horizontal angle position or any other angle position to transmit power.

[0012] Furthermore, the extended first-stage chain and chain drive support frame are adjusted to a suitable angle and welded to the dedicated fixed support of the CVT engine or electric motor to form an integral structure; the axis of the extended first-stage chain drive support frame, which is horizontally welded to the rear of the dedicated fixed support and the universal joint bearing seat welded to its end, is at the same height as the end output axis of the CVT engine or electric motor and the two axes are parallel; the axis of the extended first-stage chain drive support frame, which is vertically welded to the lower part of the dedicated fixed support and the universal joint bearing seat welded to its end, remains in the same vertical plane and the two axes remain parallel in the vertical plane;

[0013] Depending on the actual situation, the shaft of the extended first-stage chain drive support frame welded to the CVT engine or motor at the appropriate angle position and the universal joint bearing seat welded to its end can be kept in the same plane with the end output shaft of the CVT engine or motor, and the two shafts in the same plane are parallel.

[0014] Two constant velocity ball joint heads are installed on the outside of the universal joint bearing housing at the end of the extended first-stage chain drive support frame. A large sprocket is also installed on the right universal joint shaft, which is kept in the same vertical plane as the small sprocket installed on the right output shaft of the CVT engine or motor. The two sprocket sets are meshed by a chain. The central screw inside the universal joint shaft fastens the two universal joint heads to the bearings in the bearing housing.

[0015] Furthermore, the two constant velocity ball joints on the left and right sides can simultaneously install two drive half shafts on the left and right sides and connect with the constant velocity ball joints with telescopic function installed on the left and right steering knuckles of the independent suspension. This transmission structure is suitable for the transmission method of independent suspension, and a differential can also be optionally installed between the two universal joints on the left and right sides.

[0016] The two constant velocity joints on the left and right sides can simultaneously install two drive half shafts to transmit power to both sides. Depending on the vehicle's transmission needs, it is preferable to install a single drive half shaft in the left universal joint, extending left to the left end of the integrated drive axle tube, and then transmitting power through the constant velocity joint extending right from the chain drive assembly. Alternatively, it is preferable to install a single drive half shaft in the right constant velocity joint, extending right to the right end of the integrated drive axle tube, and then transmitting power through the constant velocity joint extending left from the chain drive assembly. This structure cannot install a differential between the two universal joints and is suitable for non-independent suspension transmissions.

[0017] Furthermore, the integral drive axle tube is composed of an integral axle tube, a drive rigid shaft installed inside the axle tube, a bearing housing consisting of a universal joint and a small sprocket combination installed at the end of the axle tube, an H-type support for mounting the bearing housing, longitudinal and transverse push-pull rod seats, a brake pump fixing support, and a large sprocket, brake disc, wheel hub, and tire mounted on the drive rigid shaft. No differential is installed between the drive rigid shafts. The universal joint and small sprocket combination bearing housing and H-type support are welded to the left end of the integral drive axle tube, with the universal joint head extending to the right. The small sprocket is installed at the end of the outer universal joint shaft on the left side of the bearing housing. The large sprocket and the small sprocket are kept in the same position. A chain drive assembly is formed by meshing two sprockets in a vertical plane to create a chain drive unit on the left side of the overall drive axle, which transmits power to the left. A universal joint small sprocket assembly bearing housing and an H-type support housing are welded to the right end of the overall drive axle tube, with the universal joint head extending to the left. The small sprocket is installed at the end of the outer universal joint shaft on the right side of the bearing housing. A large sprocket is installed on the drive shaft on the outer side of the right end of the drive axle tube. The large sprocket and the small sprocket are kept in the same vertical plane and meshed with a chain to create a chain drive assembly on the right side of the overall drive axle, which transmits power to the right.

[0018] The shaft of the universal joint small sprocket combination bearing housing is installed on the same horizontal plane as the shaft of the drive hard shaft inside the integral drive axle tube. The two shafts are parallel within the same horizontal plane and have a suitable installation distance between them, so that the large and small sprockets of the two shafts do not interfere with each other during transmission.

[0019] The beneficial effects of this invention are: the engine and drive axle are installed separately, with the engine mounted on the frame, which reduces the unsprung mass of the drive axle and improves the responsiveness of the drive axle and the comfort of the driver and passengers; the boxless chain drive system can be adapted to vertical, horizontal and geared engines, and can also be matched with ordinary CVT engines and go-kart-specific CVT engines with reverse gear as power sources. Attached Figure Description

[0020] Figure 1 Rear view of a sprocket and chain drive applied to an integral rear drive axle;

[0021] Figure 2 Rear view of sprocket and chain drive applied to independent suspension;

[0022] Figure 3 Left view of a sprocket and chain drive system with a support frame structure;

[0023] Figure 4 A structural diagram of a two-pole chain drive for a CVT engine or variable frequency motor specifically designed for go-karts;

[0024] Figure 5Right view of a two-stage chain drive structure installed under a dedicated support for a CVT engine or variable frequency motor when applied to an integral drive rigid axle and independent suspension;

[0025] Figure 6 Right view of a two-stage chain drive structure for mounting on the rear of a dedicated bracket for CVT engines or variable frequency motors when applied to a solid axle and independent suspension;

[0026] Figure 7 Rear view of a three-stage chain drive assembly for go-karts applied to a solid drive axle;

[0027] Figure 8 Rear view of a two-stage chain drive combination applied to a solid drive axle for go-karts. Detailed Implementation

[0028] The technical solution of the present invention will now be described in more detail and completely with reference to the accompanying drawings.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Specific embodiment 1: A multi-stage chain drive structure for all-terrain go-karts; the multi-stage chain drive structure includes a first-stage sprocket and chain drive combination and a second-stage sprocket and chain drive combination, a two-stage chain drive structure used in conjunction with the engine in the independent suspension and steering knuckle half-shaft combination of the all-terrain go-kart body, and a third-stage chain drive structure in conjunction with a chain drive combination installed on the upper side of the non-independent suspension integral drive axle of the all-terrain go-kart body; the multi-stage chain drive structure includes a two-stage chain drive structure in conjunction with the engine when the first-stage sprocket and chain drive combination is not used, and a chain drive combination installed on the upper side of the non-independent suspension integral drive axle of the all-terrain go-kart body.

[0032] The engine (3) includes a vertical or horizontal engine that outputs power to the left of the output shaft. A small sprocket (301) is installed on the output shaft of the engine (3). The first-stage chain drive support frame (4) installed in a horizontal position connects the small sprocket (301) with the sprocket (9) on the coaxial spline of the coaxial hinge bearing seat (5) on the first-stage chain drive support frame (4) installed on the rear fixed support of the engine 3. The sprocket (9) on the coaxial spline installed on the left or right side of the coaxial hinge bearing seat (5) on the first-stage chain drive support frame (4) is meshed with the sprocket (9) to form the first-stage sprocket chain drive assembly (1).

[0033] The coaxial hinge bearing seat (5) on the first-stage chain drive support frame (4) installed on the rear fixed support of the engine (3) and the Y-shaped coaxial hinge bearing seat (7) on the second-stage chain drive support frame (6) installed on the same axis have a coaxial spline shaft (8) passing through the bearing hole, and two sprockets are installed on the spline grooves at both ends of the coaxial (8); the sprocket (9) on the left side is in the same vertical plane as the small sprocket (301) on the output shaft of the engine (3); the sprocket (11) on the right side is in the same vertical plane as the large sprocket (14) installed on the shaft of the constant velocity ball cage universal joint (13) on the right side of the universal joint bearing seat (12) at the end of the second-stage chain drive support frame (6).

[0034] The engine includes a go-kart-specific CVT engine or electric motor (101) that outputs power to the right from the output shaft (102). A sprocket (11) mounted on the right side of the coaxial (8) hinge shaft of the first and second stage chain drive support frame (6) of the go-kart-specific CVT engine or electric motor (101) at a horizontal position at the rear or at a vertical position at the lower part of the dedicated fixed support (10) is kept in the same vertical plane as a small sprocket (103) mounted on the right output shaft (102) of the go-kart-specific CVT engine or electric motor (101).

[0035] The coaxial hinge bearing seat (5) installed at the end of the first-stage chain drive support frame (4) fixedly installed at the lower vertical position of the special fixed support (10) of the go-kart-specific CVT engine or motor (101) keeps the two shafts parallel in the same vertical plane as the shaft of the output shaft (102) of the CVT engine or motor (101). The chain and the first-stage chain drive assembly (202) installed at the vertical position form an integral structure with the go-kart-specific CVT engine or motor (101).

[0036] The coaxial hinge bearing seat (5) at the end of the first-stage chain drive support frame (4) installed horizontally or vertically on the dedicated fixed support (10) for the go-kart-specific CVT engine or motor (101) and the bearing hole in the Y-shaped coaxial hinge bearing seat (7) at the upper end of the coaxially installed second-stage chain drive support frame (6) have spline coaxial (8) passing through them, and two sprockets are respectively installed on the spline grooves at both ends of the spline coaxial (8); the sprocket (11) located on the right side is kept in the same vertical plane as the small sprocket (103) on the right output shaft (102) of the go-kart-specific CVT engine or motor (101), and the two sprockets on the right side are meshed with a chain; the sprocket (9) located on the left side is kept in the same vertical plane as the large sprocket (141) installed on the shaft of the constant velocity ball cage universal joint (15) on the left side of the universal joint bearing seat (12) at the end of the second-stage chain drive support frame (6), and the two sprocket groups on the left side are meshed with a chain.

[0037] The second-stage chain drive support frame (6), which is Y-shaped, can rotate together with the installed chain around the hinged coaxial (8) to a vertical angle position, or rotate to a horizontal angle position or any angle position to transmit power.

[0038] The extended first-stage chain and chain drive support frame (401) are adjusted to a suitable angle position and welded to the special fixed support of CVT engine or motor (101) to form an integral structure; the axis of the extended first-stage chain drive support frame (401) welded to the rear of the special fixed support and the universal joint bearing seat (12) welded at its end is at the same height as the output shaft (102) of the end of CVT engine or motor (101) and the two shafts are parallel; the axis of the extended first-stage chain drive support frame (401) welded to the lower part of the special fixed support (10) and the universal joint bearing seat (12) welded at its end is kept in the same vertical plane and the two shafts are kept parallel in the vertical plane;

[0039] According to the actual situation, the axis of the extended first-stage chain drive support frame (401) welded to the special fixed support (10) of CVT engine or motor (101) and the universal joint bearing seat (12) welded at its end can be kept in the same angle plane as the axis of the output shaft (102) of CVT engine or motor (101) and parallel to the two axes in the same angle plane.

[0040] Two constant velocity ball cage universal joint heads are installed on the outside of the universal joint bearing seat (12) at the end of the extended first-stage chain drive support frame (401). A large sprocket (14) is also installed on the universal joint shaft on the right side. It is kept in the same vertical plane as the small sprocket (103) installed on the right output shaft (102) of the CVT engine or electric motor (101). The two sprocket sets are meshed by a chain. The central screw in the universal joint shaft fastens the two universal joint heads to the bearings in the bearing seat (12).

[0041] The two constant velocity ball joints on the left and right sides can simultaneously install the two drive half shafts on the left and right sides and connect with the constant velocity ball joints with telescopic function installed on the two steering knuckles on the left and right sides of the independent suspension. This transmission structure is suitable for the transmission method of independent suspension, and a differential can also be installed between the two universal joints on the left and right sides.

[0042] The two constant velocity ball joints on the left and right sides can be equipped with two drive half shafts to transmit power to both sides simultaneously. According to the transmission needs of the vehicle, the single drive half shaft (26) can be installed in the constant velocity ball joint (15) on the left side and extend to the left end of the integrated drive axle tube (16) to transmit power in the constant velocity ball joint (28) extending to the right of the chain drive assembly. Alternatively, the single drive half shaft (27) can be installed in the constant velocity ball joint (13) on the right side and extend to the right end of the integrated drive axle tube (16) to transmit power in the constant velocity ball joint (29) extending to the left of the chain drive assembly. This structure cannot install a differential between the two constant velocity ball joints on the left and right sides and is suitable for non-independent suspension transmission.

[0043] The integral drive axle tube (16) is composed of an integral axle tube, a drive hard shaft (34) installed inside the axle tube, a bearing housing consisting of a universal joint and a small sprocket installed at the end of the axle tube, an H-type support for installing the bearing housing, longitudinal and transverse push-pull rod seats, a brake pump fixing support, and a large sprocket brake disc and wheel hub tire (35) installed on the drive hard shaft. No differential is installed between the drive hard shafts.

[0044] The universal joint and small sprocket combination bearing housing (24) and H-type support housing (19) are welded to the left end of the integral drive axle tube (16) with the universal joint head (28) extending to the right. The small sprocket (30) is installed at the end of the outer universal joint shaft on the left side of the bearing housing (24). The large sprocket (21) and the small sprocket (30) are kept in the same vertical plane. The two sprockets are meshed with a chain to form a chain drive combination (32) on the left side of the integral drive axle, which is matched with the drive half shaft (26) to transmit power to the left.

[0045] Alternatively, the universal joint and small sprocket combination bearing housing (25) and H-type support housing (20) are welded to the right end of the integral drive axle tube (16) with the universal joint head (29) extending to the left. The small sprocket (31) is installed at the end of the outer universal joint shaft on the right side of the bearing housing (25). The large sprocket (211) is installed on the drive hard shaft (34) on the outer side of the right end of the drive axle tube. The large sprocket (211) and the small sprocket (31) are kept in the same vertical plane. The two sprockets are meshed with a chain to form a chain drive combination (33) on the right side of the integral drive axle, which is matched with the drive half shaft (27) to transmit power to the right.

[0046] The shaft of the universal joint small sprocket combination bearing housing is installed on the same horizontal plane as the shaft of the drive hard shaft inside the integral drive axle tube. The two shafts are parallel within the same horizontal plane and have a suitable installation distance between them, so that the large and small sprockets of the two shafts do not interfere with each other during transmission.

[0047] The coaxial hinged bearing seat, which is fixedly mounted on the first-stage chain drive support frame on the rear fixed support of the engine, has the same axis as the engine axis and the two axes are parallel. The chain and the first-stage chain drive assembly, which are installed in a horizontal position, form an integral structure with the engine. The second-stage drive chain and the Y-shaped second-stage chain drive support frame mounted on the coaxial hinged bearing seat can rotate together with the installed chain around the hinged coaxial to a vertical angle position. This is suitable for non-independent suspension integral rigid bridge transmission. It can also be rotated to a horizontal position for the transmission structure of independent suspension steering axle, thereby realizing a multi-stage chain drive structure without a box. When using the second-stage chain drive support frame, it can be matched with vertical or horizontal and go-kart-specific CVT engines with reverse gear to achieve a structure that transmits power at multiple angles and in multiple ranges.

[0048] The working principle of using vertical and horizontal engines as a power source:

[0049] The small sprocket installed on the left end output shaft of the vertical and horizontal engine transmits power to the first-stage transmission chain meshing with the small sprocket. The first-stage transmission chain transmits power to the large sprocket meshing with it. The large sprocket installed on the left side of the coaxial hinge shaft of the two-pole chain drive support frame or support seat transmits power to the small sprocket installed on the right side of the coaxial hinge shaft. This is the working principle of the first-stage chain drive in the chain drive system.

[0050] A small sprocket mounted on the right side of the coaxial hinge shaft transmits power to the second-stage transmission chain meshing with it. The second-stage chain transmits power to a large sprocket mounted on the right side of the constant velocity ball joint shaft outside the end bearing housing of the second-stage chain drive support frame and meshing with the transmission chain. The large sprocket drives the coaxial constant velocity ball joints mounted on the left and right sides outside the end universal joint bearing housing to rotate together. The rotating universal joint drives the left drive half shaft to transmit power to the slide of the constant velocity ball joint head extending to the right of the universal joint and small sprocket combination bearing housing on the left side of the integral drive axle. The drive half shaft drives the universal joint together with the small sprocket mounted on the spline shaft of the universal joint on the left side of the bearing housing to rotate together.

[0051] The small sprocket drives the meshing chain to transmit power to the large sprocket on the drive axle that meshes with the chain. Since the large sprocket is mounted on the integral rigid shaft inside the drive axle tube, the large sprocket drives the integral rigid shaft to rotate inside the axle tube, and also drives the wheel hubs and tires mounted at both ends of the rigid shaft to rotate simultaneously.

[0052] The above describes the power transmission principle of the new all-terrain go-kart when using vertical and horizontal geared engines with a boxless two-stage chain drive system applied to a non-independent suspension.

[0053] The working principle of using a go-kart-specific CVT engine with reverse gear as a power source:

[0054] The small sprocket mounted on the right end output shaft of the CVT engine with reverse gear for go-karts transmits power to the first-stage drive chain meshing with the small sprocket. The first-stage drive chain then transmits power to the large sprocket meshing with it. The large sprocket mounted on the right side of the coaxial hinge shaft of the two-pole chain drive support frame or support seat transmits power to the small sprocket mounted on the left side of the coaxial hinge shaft. This is the working principle of the first-stage chain drive in the chain drive system.

[0055] A small sprocket mounted on the left side of the coaxial hinge shaft transmits power to the second-stage transmission chain meshing with it. The second-stage chain then transmits power to a large sprocket mounted on the left side of the end bearing housing of the second-stage chain drive support frame, which is also meshed with the transmission chain and mounted on the constant velocity ball joint shaft. The large sprocket mounted on the left side of the end bearing housing drives the coaxial constant velocity universal joints mounted on both sides of the bearing housing to rotate together.

[0056] The above describes the power transmission working principle of the new all-terrain go-kart, which is equipped with a go-kart-specific CVT engine with reverse gear and a boxless two-stage chain drive system.

[0057] Working principle of the drivetrain when used in independent suspension:

[0058] The power output of vertical or horizontal engines and go-kart-specific CVT engines with reverse gear is transmitted to the coaxial constant velocity ball joints installed on the left and right sides of the bearing housing at the end of the second-stage chain drive. The working principle is the same as that of the chain drive system applied to non-independent suspension rigid axle drive.

[0059] When the two coaxial constant velocity ball joints mounted on the bearing housing at the end of the second-stage chain drive support rotate, they drive the two drive shafts mounted on the left and right sides inside the constant velocity ball joint heads to transmit power to the constant velocity ball joint heads with telescopic function, which are installed in the center of the flange shared by the wheel hub and brake disc, and outside the spline hole. The spline shaft of the constant velocity ball joint is inserted into the center of the flange and the spline hole and secured with a large nut. The rotating left and right drive shafts drive the universal joint, flange, wheel hub, and tire assembled on the wheel hub to rotate together. The above constitutes the working principle of power transmission from the engine to the tires when the chain drive system is applied to an independent suspension.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] Without departing from the concept of this invention, any obvious modifications and alterations should fall within the protection scope of this invention. The above description is only a preferred embodiment of this invention and is not intended to limit this invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A multi-stage chain drive structure for all-terrain go-karts, characterized in that: The multi-stage chain drive structure includes a first-stage sprocket and chain drive assembly and a second-stage sprocket and chain drive assembly, and also includes a third-stage chain drive structure that is used in conjunction with the chain drive assembly installed on the upper side of the non-independent suspension integral drive axle of the all-terrain go-kart body; the all-terrain go-kart includes an engine or an electric motor, which is mounted on the frame and separately set from the non-independent suspension integral drive axle; the engine is a go-kart-specific CVT engine (101) that outputs power to the right from the output shaft (102), or the output shaft (102) of the electric motor (101). Power is output to the right; a small sprocket (103) is installed on the right output shaft (102) of the go-kart-specific CVT engine or electric motor (101); a first-stage chain drive support frame (4) is installed on the dedicated fixed support (10) of the go-kart-specific CVT engine or electric motor (101); a spline coaxial (8) passes through the bearing hole in the coaxially shaped coaxial bearing seat (7) at the upper end of the coaxially shaped Y-type second-stage chain drive support frame (6) and the coaxially mounted Y-type coaxially shaped bearing seat (7); and the spline coaxial (8) passes through the bearing hole. Two sprockets are installed on the spline grooves at the left and right ends respectively. The sprocket (11) located on the right side of the spline coaxial (8) is kept in the same vertical plane as the small sprocket (103) installed on the right output shaft (102) of the go-kart-specific CVT engine or motor (101). The sprocket (11) on the right side of the spline coaxial (8) and the small sprocket (103) installed on the right output shaft (102) of the engine or motor (101) are connected by a chain to form the first-stage sprocket chain drive assembly (202) in the right vertical position. The sprocket (9) on the left side of the spline coaxial (8) and the large sprocket (141) mounted on the output shaft of the constant velocity ball cage universal joint head (15) on the left side of the Y-shaped second-stage chain drive support frame (6) are kept in the same vertical plane, and the sprocket (9) on the left side of the spline coaxial (8) and the large sprocket (141) mounted on the output shaft of the constant velocity ball cage universal joint head (15) on the left side of the Y-shaped second-stage chain drive support frame (6) are connected by a chain to form a second-stage sprocket chain drive assembly (303).

2. A multi-stage chain drive structure for all-terrain go-karts, characterized in that: The multi-stage chain drive structure includes a first-stage sprocket and chain drive assembly and a second-stage sprocket and chain drive assembly, and also includes a third-stage chain drive structure that is used in conjunction with the chain drive assembly installed on the upper side of the non-independent suspension integral drive axle of the all-terrain go-kart body; the all-terrain go-kart includes an engine or an electric motor, which is mounted on the frame and is separately set from the non-independent suspension integral drive axle; the engine includes a vertical or horizontal engine (3) that outputs power to the left side of the output shaft; a small sprocket (301) is installed on the left output shaft of the vertical or horizontal engine (3). The bearing holes in the coaxial hinge bearing seat (5) on the first-stage chain drive support frame (4) installed on the rear fixed support of the vertical or horizontal engine (3) and the Y-shaped coaxial hinge bearing seat (7) on the upper end of the Y-shaped second-stage chain drive support frame (6) installed on the same axis have spline coaxial (8) passing through them; and two sprockets are respectively installed on the spline grooves at the left and right ends of the spline coaxial (8); The first-stage chain drive support frame (4) installed in a horizontal position engages the small sprocket (301) with the left sprocket (9) installed on the spline coaxial (8) by a chain to form the first-stage sprocket chain drive assembly (1) installed in a horizontal position on the left. The sprocket (9) located on the left side of the spline coaxial (8) is in the same vertical plane as the small sprocket (301) on the output shaft of the vertical or horizontal engine (3); the sprocket (11) located on the right side of the spline coaxial (8) is in the same vertical plane as the large sprocket (14) installed on the output shaft of the constant velocity ball cage universal joint head (13) on the right side of the universal joint bearing seat (12) at the end of the Y-shaped second-stage chain drive support frame (6), and they are meshed with each other by a chain to form a second-stage sprocket chain drive assembly (302).

3. The multi-stage chain drive structure for all-terrain go-karts according to claim 1, characterized in that: The axis of the coaxial hinged bearing seat installed at the end of the first-stage chain drive support frame installed in a vertical position is parallel to the axis of the output shaft of the engine or motor in the same vertical plane. The first-stage sprocket and chain drive assembly installed in a vertical position is integral with the engine or motor.

4. A multi-stage chain drive structure for all-terrain go-karts according to claim 1 or 2, characterized in that: The universal joint bearing seat (12) at the end of the Y-shaped second-stage chain drive support frame (6) is equipped with two constant velocity ball cage universal joint heads. The central screw in the output shaft of the constant velocity ball cage universal joint head fastens the two constant velocity ball cage universal joint heads to the bearings in the bearing seat. The left and right constant velocity ball joints are simultaneously equipped with two drive half shafts to transmit power to the left and right sides, or a single drive half shaft (26) is installed in the left constant velocity ball joint (15) and extends to the left end of the integrated drive axle (16) to transmit power in the right-extending constant velocity ball joint (28) of the chain drive assembly; or a single drive half shaft (27) is installed in the right constant velocity ball joint (13) and extends to the right end of the integrated drive axle (16) to transmit power in the left-extending constant velocity ball joint (29) of the chain drive assembly.

5. According to claim 1 or 2, the multi-stage chain drive structure for all-terrain go-karts is composed of an integral axle tube, a drive shaft (34) installed inside the integral axle tube, a constant velocity ball joint head, a small sprocket, a bearing seat, an H-type support seat for mounting the bearing seat, longitudinal and transverse push-pull rod seats, a brake pump fixing support, and a large sprocket brake disc and wheel hub tire (35) installed on the drive shaft. No differential is installed between the drive shafts. The bearing housing (24) and H-type support housing (19) located on the left side are welded to the left end of the integral bridge tube, and the left constant velocity ball cage universal joint head (28) extends to the right. The left small sprocket (30) is installed at the end of the left constant velocity ball cage universal joint head shaft, and the left large sprocket (21) is installed on the drive hard shaft (34) on the outside of the left end of the integral bridge tube. The left large sprocket (21) and the left small sprocket (30) are kept in the same vertical plane. The two sprockets are meshed with a chain to form a chain drive assembly (32) on the left side of the integral drive axle, which is matched with the left drive half shaft (26) to transmit power to the left. Alternatively, the bearing housing (25) and H-type support housing (20) located on the right side are welded to the right end of the integral bridge tube, and the right constant velocity ball cage universal joint head (29) extends to the left. The right small sprocket (31) is installed at the end of the right constant velocity ball cage universal joint head shaft, and the right large sprocket (211) is installed on the drive hard shaft (34) on the outside of the right end of the integral bridge tube. The right large sprocket (211) and the right small sprocket (31) are kept in the same vertical plane. The two sprockets are meshed with a chain to form a chain drive assembly (33) on the right side of the integral drive axle, which is matched with the right drive half shaft (27) to transmit power to the right. The bearing housing on the left or right side is mounted on the same horizontal plane as the drive shaft inside the integral bridge tube. The two shafts are parallel within the same horizontal plane and have a suitable installation distance between them, so that the large and small sprockets do not interfere with each other during transmission.

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