CN212959764U

CN212959764U - Transmission shaft of automobile transmission system

Info

Publication number: CN212959764U
Application number: CN202021202176.2U
Authority: CN
Inventors: 陈晓赓
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-27
Filing date: 2020-06-27
Publication date: 2021-04-13
Anticipated expiration: 2030-06-27

Abstract

A kind of car drive system drive shaft, mainly make up by (front portion) middle drive shaft assembly and (rear portion) drive shaft assembly, the passenger car drive shaft is mainly by the speed change gear and both sides output end flange of the differential mechanism, the front end is the drive shaft assembly of the flange plate and rear end is the splined shaft and there is mechanical connection of left and right knuckle of the spline housing, characterized by that, the said car drive system drive shaft assembly is made up of helical spring and rubber elastomer drive shaft of the splined shaft of cylindrical spline housing and rear end for the splined shaft of front end, the cylindrical spline housing of front end connects the splined shaft of output shaft end of the speed change gear and rear end cylindrical spline housing and connects the splined shaft of input shaft end of the main drive of rear axle; the section of the spiral spring is a circular section or a square section; the spiral spring has the axial bending deformation and telescopic functions; the outer circle circumference of the spiral spring is sleeved with a rubber sleeve; the rubber sleeve and the spiral spring transmission shaft are integrated; the mechanical connection is preferably a welded connection.

Description

Transmission shaft of automobile transmission system

Technical Field

The invention relates to the field of design of commercial automobiles, in particular to an automobile transmission system transmission shaft.

Background

The automobile is used in urban and rural traffic, and the structure of a transmission shaft in an automobile transmission system is closely related to the performance of the automobile.

At present, the transmission shaft of the automobile transmission system mainly comprises a transmission shaft of the automobile transmission system of a commercial vehicle driven by a rear wheel of a front engine and a transmission shaft of the automobile transmission system of a passenger vehicle driven by a front wheel of the front engine.

The transmission system of the front engine rear wheel drive commercial vehicle is mainly formed by mechanically connecting a front engine, a clutch assembly with a torsional vibration damper, a transmission assembly, a transmission shaft assembly with a universal joint, a rear axle, wheels and the like;

the transmission system of the passenger vehicle driven by the front engine front wheel is mainly formed by mechanically connecting a front engine, a clutch assembly with a torsional vibration damper, a transmission and differential assembly, a transmission shaft assembly with a ball cage universal joint, a left steering knuckle, a right steering knuckle, a front wheel and the like;

the transmission shaft assembly of the commercial automobile short-wheelbase automobile transmission system is mainly formed by mechanically connecting a transmission output shaft end spline shaft, a universal joint flange with a spline sleeve, a universal joint with a cross shaft lubricating grease nipple, a transmission shaft tube welded connection universal joint, a universal joint flange with a spline sleeve, a rear axle main transmission input end spline shaft and the like;

the transmission shaft of the commercial vehicle long-wheelbase transmission system is formed by connecting a middle transmission shaft (at the front part) and a transmission shaft assembly (at the rear part);

the middle transmission shaft assembly (at the front part) of the transmission shaft of the commercial vehicle transmission system is mainly formed by connecting a spline shaft at the output shaft end of a transmission, a universal joint flange with a spline sleeve, a universal joint with a lubricating grease nipple, a middle transmission shaft tube, a middle supporting shaft diameter, the spline shaft in a welding manner, a universal joint flange with a spline sleeve and the like; the transmission shaft assembly (at the rear part) is mainly formed by connecting a universal joint with a lubricating grease nozzle cross shaft, a sliding fork shaft tube with a spline sleeve at the rear end, a transmission shaft spline shaft, a transmission shaft tube, a universal joint flange with a spline sleeve, a rear axle main driver shaft end spline shaft and the like in a welding manner;

the universal transmission structure realizes the transmission of the output shaft of the speed changer, the middle transmission shaft, the transmission shaft and the input shaft of the rear axle main driver which are not on the same straight line. The device is complex in structure and only represents that the automobile can transmit power (torque); the manufacturing cost is high, the lubricating grease is easy to wear and damage after being maintained for a long time, and is easy to break down or lose the original performance, even cause traffic accidents. At present, no automobile transmission shaft mechanism with simple structure, remarkably improved performance and low cost is designed.

Disclosure of Invention

In order to solve the problems existing in the prior art, the utility model provides a simple structure of the transmission shaft design of the automobile transmission system.

The technical scheme of the utility model is that:

a kind of car drive system drive shaft is by (forepart) middle drive shaft assembly mainly by the speed change gear output shaft end spline shaft, have universal joint flange of the spline housing, have universal joint and middle drive shaft axle tube welded connection of cross lubricating grease nipple, middle drive shaft axle tube and rear (output) end spline shaft welded connection, and have mechanical connection such as the universal joint flange of the spline housing; the transmission shaft assembly (at the rear part) is mainly formed by mechanically connecting a universal joint with a cross shaft lubricating grease nozzle at the front (input) end, a transmission shaft tube welded connection with a spline sleeve at the rear end, a front end of the transmission shaft tube welded connection with a spline shaft, a universal joint welded connection universal joint with the transmission shaft tube and the rear end, a universal joint flange with the spline sleeve, a spline shaft at the input end of a rear axle main driver and the like. The transmission system is characterized in that the middle transmission shaft assembly of the automobile transmission system consists of a spiral spring and a rubber elastomer transmission shaft, wherein the front end of the spiral spring is a cylindrical spline housing, the rear end of the spiral spring is a spline shaft, the cylindrical spline housing at the front end is connected with the spline shaft at the output shaft end of the transmission, and the rear end of the spiral spring is the spline shaft; the structure of the middle transmission shaft assembly is similar to that of a transmission shaft of a passenger car, and the same structure is used for the transmission shaft of the passenger car;

the automobile transmission system transmission shaft assembly consists of a spiral spring and a rubber elastic body transmission shaft, wherein the front end and the rear end of the spiral spring are cylindrical spline sleeves, and the front end cylindrical spline sleeve is connected with a spline shaft at the rear end of the middle transmission shaft; the rear end cylindrical spline sleeve is connected with a spline shaft at the input shaft end of the rear axle main driver;

the section of the spiral spring is a circular section, a square section or/and a rectangular section; the spiral spring has the axial bending deformation and telescopic functions; the outer circle circumference of the spiral spring is sleeved with a rubber sleeve; the rubber sleeve and the spiral spring transmission shaft are integrated, the rubber sleeve elastic body has elasticity, the rubber sleeve and the spiral spring are integrated, and the rubber sleeve has the function of protecting the spiral spring; the connection is a (preferably) welded connection.

The spiral spring and the rubber sleeve have axial bending deformation and telescopic functions: the axial length is long, and the bending deformation can reach more than 10 degrees and 20 degrees; the spring has a telescopic function in the axial direction and can be telescopic; the input shaft of the rear axle is not in line with the axis of the variator and typically does not exceed 10 °; the expansion and contraction are not more than 50-80 mm, so that the universal transmission function on a non-straight line is realized. The spiral spring elastic type transmission shaft replaces a universal joint transmission shaft and becomes the automobile spiral spring type transmission shaft which is a main component in an automobile transmission system; the spiral spring type transmission shaft can be independent and becomes a renewable accessory on the automobile.

2. Furthermore, the spiral spring transmission shaft of the middle transmission shaft assembly is a spiral spring and is in welded connection with the front-end cylindrical spline housing and is in welded connection with the rear-end spline shaft to form an integral spiral spring type steering transmission shaft, and the welding seams of the welded connection are V-shaped welding seams, V-shaped welding seams and seam welding seams, and brazing welding seams and V-shaped welding seams. When the transmission shaft rotates, the spiral spring has certain torsional deformation, plays a role of a torsional vibration damper and can replace the torsional vibration damper of the clutch.

3. Furthermore, the helical spring transmission shaft of the transmission shaft assembly is a helical spring transmission shaft which is formed by welding and connecting a helical spring and cylindrical spline sleeves at the front end and the rear end into a whole, and the welding seam of the welding connection is a V-shaped welding seam, a V-shaped welding seam plus a seam welding seam, and a brazing welding seam plus a V-shaped welding seam. When the transmission shaft rotates, the spiral spring has certain torsional deformation, plays a role of a torsional vibration damper and can replace the torsional vibration damper of the clutch.

4. Furthermore, both ends of the transmission shaft are integrated transmission shafts, the spline sleeve and the middle part of the transmission shaft are provided with the spiral spring.

5. Further, the inner ends of the spline sleeves at the two ends of the transmission shaft are in the shape of a circular boss, a spiral spring is sleeved on the spline sleeves, and the spiral spring of the transmission shaft and the spline sleeves at the two ends are connected into a whole by V welding and seam welding to form the transmission shaft.

6. Further, the spiral spring is a spiral spring with a circular cross section, the transmission shaft spiral spring is connected with the spline sleeves at the two ends, and the transmission shaft spline sleeves and the spiral spring are connected into a whole to form the transmission shaft by using a brazing welding seam and a V welding seam; the spring wire of the spiral spring is of a variable-diameter structure: the two ends are provided with a thickened diameter and a tight screw pitch; the middle part is reduced in diameter, so that the connection of the two ends is facilitated.

7. Furthermore, the spiral spring is of a double-layer spiral spring structure, the outer layer is a right-handed spring, and the inner layer is a left-handed spring; or the outer layer is a left-handed spring, and the inner layer is a right-handed spring, so that the bidirectional double-layer spiral spring transmission shaft is formed; the inner ring and the outer ring at two sides of the transmission shaft are additionally connected by bolts; when the transmission shaft rotates, the double-layer spiral spring reduces the overall torsional deformation of the spiral spring.

8. Furthermore, the front end of the middle transmission shaft of the spiral spring is provided with a flange (the flange and the rear end are spline shafts, the flange at the front end is connected with an output shaft of the transmission, and the rear end is a spline shaft.

9. Furthermore, the front end of the middle transmission shaft of the spiral spring is provided with a flange plate (flange) and the rear end is provided with a flange plate, the front end is connected with a universal joint flange on the middle transmission shaft, and the rear end is connected with a universal joint flange at the input end of the rear axle main driver.

Has the advantages that:

the utility model (invention) provides an automobile transmission shaft, the advantage is: the number of parts is small, the structure is simple, and the cost is reduced; the transmission shaft selects certain spring parameters to enable the transmission shaft to have certain torsional characteristics, and is expected to replace a torsional vibration damper of a clutch, namely the structure of the clutch is simplified, and the design of an automobile transmission system is simplified; the automobile chassis is suitable for commercial automobiles, bus chassis and minicars.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic view of an intermediate transmission shaft according to an embodiment of the present invention;

fig. 3 is a schematic view of a drive shaft of an embodiment of the invention;

FIG. 4 is a schematic view of an integral drive shaft of an embodiment of the invention;

fig. 5 is an enlarged view of an integral drive shaft a of an embodiment of the present invention;

fig. 6 is a schematic view of a welded connection transmission shaft with a cylindrical boss at the inner end of the spline housing according to an embodiment of the present invention;

fig. 7 is a schematic view of a welded connection transmission shaft with a cylindrical boss at the inner end of the spline housing according to an embodiment of the present invention;

fig. 8 is a schematic view of a circular cross-section helical spring drive shaft of an embodiment of the invention;

fig. 9 is a schematic view of a variable diameter wire construction of a coil spring according to an embodiment of the present invention;

fig. 10 is a schematic view of a double-layer bidirectional helical spring transmission shaft according to an embodiment of the present invention;

fig. 11 is a schematic view of an intermediate transmission shaft according to an embodiment of the present invention, in which a flange plate (flange) is provided at a front end and a spline shaft is provided at a rear end;

FIG. 12 is a schematic view of the flange shown in FIG. 11;

fig. 13 is a schematic view of the flange plates (flanges) at the front end and the rear end of the intermediate transmission shaft according to an embodiment of the present invention.

In the figure, 1, a speed changer, 2, a speed changer output shaft, 3, a rubber protective sleeve, 4, a spiral spring elastomer intermediate transmission shaft assembly, 5, a transmission shaft intermediate support assembly, 6, a spiral spring elastomer transmission shaft assembly, 7, a rear axle main driver input spline shaft, 8, a rear axle housing, 9, an outer ring reverse direction spiral spring and 10, a bolt.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

In fig. 1, the construction of the present invention is schematically illustrated, in which an automotive transmission 1, a transmission output shaft 2, a shaft end spline housing 41 of a front end intermediate transmission shaft, a coil spring 42 and a cylindrical spline shaft 43 at the rear end are welded to form an intermediate transmission shaft assembly 4; the transmission shaft assembly 6 is formed by welding and connecting a transmission shaft middle support assembly 5 and a spiral spring 6 with

cylindrical spline sleeves

61 and 63 at two ends; and the input end spline shaft 7 of the rear axle main transmission is connected with a rear axle 8.

In fig. 2, a square coil spring 42 and a shaft end spline shaft 43 are welded and connected integrally; the spline sleeve of the transmission shaft, the spline shaft and the spiral spring are connected into a whole by using a brazing welding seam and a V welding seam to form the middle transmission shaft. The length of the spiral spring can be 800-1800 mm, the overall external diameter of the spiral spring can be 80-180 mm, the diameter of the spring wire can be 8.0-18.0 mm, and the pitch of the spring can be 8-18.0 mm, which depends on the types of the long-head automobiles and the mini-automobiles of the flat-head automobiles.

In the transmission shaft of fig. 3, the shaft end spline housing 61, the square coil spring 62 and the shaft end spline housing 63 are welded and connected integrally; the transmission shaft spline sleeve, the spline shaft and the spiral spring are connected into a whole by using a brazing welding seam and a V welding seam to form the transmission shaft. The parameters of the coil spring can be the same as those in FIG. 2, depending on the type of the flat-head automobile and the minicar.

In fig. 4 and 5, the transmission shaft is an integrated transmission shaft, and a circular cylindrical steel pipe can be selected during manufacturing, both ends of the circular cylindrical steel pipe are processed into

spline sleeves

61 and 63, a hole is drilled at an arrow a by using a drill, and then the hole is milled along the thread direction by using a milling cutter to form a spiral spring 62 at the middle part, so that the integrated spiral spring transmission shaft can be formed.

In fig. 6 and 7, as in fig. 3, the inner ends of the shaft

end spline housings

61 and 63 are provided with bosses, the helical spring 62 and the shaft end spline housing are welded and connected into a whole, and fig. 7 shows the bosses; the transmission shaft spline sleeve and the spiral spring are connected into a whole by the brazing welding seam and the V welding seam, so that the connecting area is enlarged, namely the strength is increased, and the spiral spring transmission shaft is formed. The parameters of the spiral spring depend on the models of the flat-head automobile and the minicar.

In fig. 8, as in fig. 3, the circular coil spring 62 and the shaft-

end spline housings

61 and 63 are welded integrally; connecting the spline sleeve of the transmission shaft and the spiral spring into a whole by using a brazing welding seam and a V welding seam to form a spiral spring transmission shaft; also, the same as in FIG. 7 is the configuration of the shaft end spline housing with a boss on the inner end for strength.

In fig. 9, the helical spring wire diameter Φ is a varied diameter configuration: the two ends are thickened and the middle part is reduced in diameter, and the coil spring shown in figure 7 is made by coiling; the diameter of the two ends is increased, thereby being beneficial to welding connection and improving the strength.

In fig. 10, on the basis of the integrated transmission shaft of fig. 4 or the transmission shaft of fig. 3, a transmission shaft with an outer ring of a reverse direction coil spring is added to form a bidirectional double-layer coil spring transmission shaft; 91-92-93 and 61-62-63 have the same structure (different diameters), and a transmission shaft spline housing and a spiral spring inner ring 61-62-63 are connected into a whole and an outer ring 91-92-93 is connected into a whole by using a brazing weld and a V weld; a gap can be reserved between the two middle spring parts to keep the two independent; the inner shaft tube and the outer shaft tube on the two sides can be matched tightly, and the tight fit is to connect the inner shaft tube and the outer shaft tube together tightly; the inner ring and the outer ring of the transmission shaft can be connected by additional bolts 10 to form the transmission shaft with a spline at the shaft end.

In fig. 11, the front end of the middle transmission shaft coil spring 42 is provided with a flange type flange (flange 41) and the rear end is provided with a spline shaft 43 which are welded and connected into a whole; fig. 12 shows a view of a flange plate, which may have 4 to 6 connecting bolt holes, a front flange plate having connecting bolt holes, a flange type flange plate provided at the end of the output shaft 2 of the transmission 1 and the flange plate having connecting bolt holes, which correspond to and are connected to each other, and a spline shaft 43 provided at the rear end of the intermediate transmission shaft.

It should be noted that: FIG. 11 shows that the driveline shaft with a flange at the front end and a splined shaft at the rear end is also suitable for a driveline shaft driven by the front wheel of a front engine of a passenger car; the shaft end flange plate is connected with output flange plates at two ends of a differential mechanism of the transmission and is connected with a spline shaft to form a spline in a left steering knuckle and a right steering knuckle; because the speed changers connected with the engine of the front engine front wheel driven automobile can not be arranged in central symmetry generally, the lengths of the left transmission shaft and the right transmission shaft are different; the length of the transmission shaft and the bolt holes of different vehicle types are different, and the device is arranged according to the corresponding length and the corresponding bolt holes.

In fig. 13, the intermediate drive shaft 62 has a flanged flange (flange 61) at its front end and a flange 63 at its rear end, the flanges having connecting bolt holes, which may be 4-6 as in fig. 11, the front end being connected to the universal joint flange on the intermediate drive shaft and the rear end being connected to the universal joint flange at the input of the rear axle main drive.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A kind of car drive system drive shaft, the anterior middle drive shaft assembly is mainly by the output shaft end spline shaft of the speed change gear, universal joint flange with spline housing, cross axle universal joint with grease nipple, middle drive shaft axle tube, middle support shaft diameter and spline shaft and universal joint flange with spline housing of the welded connection form; the rear transmission shaft assembly is mainly formed by connecting a universal joint with a lubricating grease nozzle cross shaft, a sliding fork shaft tube with a spline sleeve at the rear end, a transmission shaft spline shaft, a transmission shaft tube, a universal joint flange with a spline sleeve and a rear axle main driver shaft end spline shaft which are connected in a welding manner; the automobile transmission system middle transmission shaft assembly is characterized in that the front end of the automobile transmission system middle transmission shaft assembly is provided with a cylindrical spline housing, and the rear end of the automobile transmission system middle transmission shaft assembly is provided with a spiral spring and a rubber transmission shaft which are provided with spline shafts; the transmission shaft assembly of the automobile transmission system comprises a spiral spring and a rubber transmission shaft, wherein the front end and the rear end of the spiral spring are provided with cylindrical spline sleeves; the middle transmission shaft assembly is connected with the transmission output shaft end spline shaft through the cylindrical spline sleeve at the front end; the cylindrical spline sleeve at the rear end of the transmission shaft is connected with a spline shaft at the input shaft end of the rear axle main driver; the section of the spiral spring is a circular section, a square section or a rectangular section; the spiral spring has the axial bending deformation and telescopic functions; the rubber sleeve is sleeved on the excircle circumference of the spiral spring, the rubber sleeve and the spiral spring transmission shaft are integrated, and the rubber sleeve is an elastic body and has elasticity and axial bending deformation and stretching functions; the rubber sleeve has the function of protecting the spiral spring.

2. The automotive drive train transmission shaft according to claim 1, wherein the coil spring transmission shaft of the intermediate transmission shaft assembly is a coil spring type steering transmission shaft in which a coil spring is welded to a front end cylindrical spline housing and welded to a rear end spline shaft to form a whole, and the weld joints of the welded connection are V-shaped weld joints, V-shaped weld joints + seam weld joints, or braze weld joints + V-shaped weld joints.

3. The transmission shaft of claim 1, wherein the helical spring transmission shaft of the transmission shaft assembly is a helical spring transmission shaft formed by welding a helical spring and cylindrical spline housings at the front and rear ends into a whole, and the welding seam of the welding connection is a V-shaped welding seam, a V-shaped welding seam + a seam welding seam, or a brazing welding seam + a V-shaped welding seam.

4. The automotive driveline transmission shaft of claim 1, wherein the ends of the transmission shaft are splined sleeves and the intermediate coil spring is an integral transmission shaft.

5. The automotive transmission shaft according to claim 1, wherein the inner ends of the spline sleeves at both ends of the transmission shaft are cylindrical bosses, and are sleeved with helical springs, and the transmission shaft is welded into a whole by a V-shaped welding seam and a seam welding seam.

6. The transmission shaft of the automobile transmission system according to claim 1, wherein the coil spring is a coil spring with a circular cross section, and the coil spring of the transmission shaft is welded and connected with the spline sleeves at two ends through a brazing welding seam and a V-shaped welding seam to form a whole; the spring wire of the spiral spring is of a variable-diameter structure: the two ends of the spiral spring are of thickened diameter, the middle part of the spiral spring is of reduced diameter, and the spiral spring is coiled.

7. The automotive driveline transmission shaft of claim 1, wherein the coil spring is a double-layer bidirectional coil spring configuration, with an outer layer being a right-handed spring and an inner layer being a left-handed spring; or the outer layer is a left-handed spring, and the inner layer is a right-handed spring, so that the bidirectional double-layer spiral spring transmission shaft is formed; the inner ring and the outer ring at two sides of the transmission shaft are additionally connected by bolts.

8. The automotive driveline transmission shaft of claim 1, wherein the left and right front engine front wheel drive automotive transmission shafts of the passenger vehicle are transmission shafts having a flanged flange at a front end and a splined shaft at a rear end, and the coil spring intermediate transmission shaft having a flanged flange at a front end and a splined shaft at a rear end is also suitable for the left and right front engine front wheel drive automotive transmission shafts of the passenger vehicle.

9. The automotive driveline shaft of claim 1, wherein said coil spring intermediate driveshaft has a flanged flange at a front end and a flanged flange at a rear end.