CN109484120B

CN109484120B - Movable connecting structure of steel plate and rear axle

Info

Publication number: CN109484120B
Application number: CN201811401805.1A
Authority: CN
Inventors: 李邦华
Original assignee: Chongqing Banghua Machinery Manufacturing Co ltd
Current assignee: Chongqing Banghua Machinery Manufacturing Co ltd
Priority date: 2018-11-22
Filing date: 2018-11-22
Publication date: 2020-07-07
Anticipated expiration: 2038-11-22
Also published as: CN109484120A

Abstract

The invention belongs to the field of motor vehicles, and particularly discloses a movable connecting structure of a steel plate and a rear axle, which comprises the rear axle fixed with a brake with an anti-rotation piece, and the steel plate with two ends hinged on a motor vehicle body and playing a role of buffering when the vehicle body sinks under stress, wherein the movable connecting structure is arranged between the steel plate and the rear axle, and when the steel plate is deformed due to the sinking of the vehicle body under stress, the rear axle can swing or rotate along with the movement of the anti-rotation piece through the movable connecting structure. This structure is when the steel sheet sinks and warp because of the automobile body atress, can swing or rotate along with the motion of preventing revolving the piece through swing joint structure rear axle to displacement when the adaptation is prevented revolving the piece swing, and then deformation or fracture when having prevented revolving the piece and receiving the pulling force.

Description

Movable connecting structure of steel plate and rear axle

Technical Field

The invention belongs to the field of motor vehicles, and particularly relates to a movable connecting structure of a steel plate and a rear axle.

Background

At present, the braking systems of three-wheeled motor vehicles and three-wheeled electric vehicles are divided into a front wheel braking part and a rear wheel braking part, the two braking parts generally adopt a braking mode that a brake block rubs the side edge of a hub, namely two brake handles on a handlebar are respectively connected with the front wheel braking part and the rear wheel braking part. When braking, the brake handle drives the brake pad through the steel cable to stop the transmission of the front wheel and the rear wheel. The three-wheeled motor vehicle and the three-wheeled electric vehicle have high speed and heavy weight. Generally, the rear portion of the vehicle occupies a major weight of the vehicle and has a large inertia, and thus it can be seen that the braking of the vehicle is critical to the rear wheel braking portion. Rear wheel braking is divided into oil pressure braking and mechanical braking according to the braking mode. The oil pressure braking is that hydraulic oil is supplied to a piston cavity in a braking system of the rear wheel through a hydraulic station on the vehicle body, so that a piston rod pushes a brake pad to expand the brake pad outwards to brake the wheel hub, and the effect of braking the rear wheel is achieved.

Because of low cost and easy maintenance, mechanical brakes are often used, such as 201510033475.5 patent document, mechanical brake type brakes for motor vehicles and electric vehicles. In the mechanical brake shown in fig. 1 and 2, the brake arm is rotated by a steel cable (or a steel bar pull rod), so that the brake pad is expanded outwards to brake the hub. The brake bottom plate of the brake 3 is usually fixedly arranged on the rear axle 4, the rear axle 4 is fixedly connected with a steel plate 2 (plate spring) through two U-shaped bolts 7 and a five-hole pressing plate 16, and two ends of the steel plate 2 are hinged to the bottom of the motor vehicle body 1 to play a role in buffering. In order to prevent the brake arm from rotating, the brake 3 is provided with an anti-rotation element 6 (usually an anti-rotation pull rod) in a self-rotation manner, one end of the anti-rotation element 6 is hinged on the brake 3, and the other end of the anti-rotation element 3 is hinged at the bottom of the motor vehicle body 1. At this time, as shown in fig. 2, the four-point connecting line forms a quadrangle by the fixing point of the rear axle 4 and the steel plate 2, the hinge point of the anti-rotation element 6 and the brake 3, the hinge point of the steel plate 2 and the right side of the vehicle body 1, and the hinge point of the anti-rotation element 6 and the vehicle body 1. When the vehicle body 1 is loaded, the vehicle body 1 is stressed to sink and approach the rear axle 4, and the steel plate 2 deforms. The fixed point of the rear axle 4 to the steel plate 2 moves relative to the vehicle body 1, thereby dragging the quadrangle to deform, and at the moment, the rotation preventing member 6 and the steel plate 2 move.

In the process, the steel plate can deform, but the anti-rotation piece is easy to deform or break in the using process because the reaction force of the brake is larger when the anti-rotation piece swings upwards.

Disclosure of Invention

The invention aims to provide a movable connecting structure of a steel plate and a rear axle, which aims to solve the problem that an anti-rotation piece is easy to break.

In order to achieve the purpose, the basic scheme of the invention provides a movable connection structure of a steel plate and a rear axle, which comprises the rear axle fixed with a brake with an anti-rotation piece and the steel plate with two ends hinged on the body of a motor vehicle and playing a role of buffering when the body sinks under stress, wherein the movable connection structure is arranged between the steel plate and the rear axle, and when the steel plate is deformed due to the sinking of the body under stress, the rear axle can swing or rotate along with the movement of the anti-rotation piece through the movable connection structure.

The beneficial effect of this basic scheme lies in: when the steel sheet sinks and warp because of the automobile body atress, can swing or rotate along with the motion of preventing revolving the piece through swing joint structure rear axle, the stopper of fixing on the rear axle promptly can adapt to the displacement when preventing revolving the piece swing, and then has prevented to revolve deformation or fracture when piece receives stopper reaction force.

The first optimization scheme is as follows: the movable connection structure is a hinged connection structure of a steel plate and a rear axle, and the rear axle can swing along with the movement of the anti-rotation piece through the movable connection structure when the steel plate is deformed due to the fact that the automobile body sinks under stress. The steel plate is hinged with the rear axle, so that U-shaped bolts are avoided, and the cost is saved.

And the second optimization scheme is as follows: the movable connection structure is a rotary connection structure of a steel plate and the rear axle, and the rear axle can rotate along with the movement of the anti-rotation piece through the movable connection structure when the steel plate is deformed due to the fact that the automobile body sinks under stress. The steel plate is rotationally connected with the rear axle, and the structure is simple and the cost is low.

And the optimization scheme is three: the articulated connection structure is a sliding articulated structure with vertical displacement of the rear axle and the steel plate when swinging, a support piece for supporting the steel plate is arranged between the rear axle and the steel plate, when the steel plate is deformed due to the sinking of the automobile body under stress, the rear axle can swing along with the movement of the anti-rotation piece through the movable connection structure, and the rear axle and the steel plate can move relatively. The sliding hinge structure enables the rear axle to have displacement in the vertical direction while swinging, so that the supporting piece can support the steel plate when the automobile body does not sink, and the hinge structure does not bear gravity when the automobile body does not sink, thereby avoiding the damage of the hinge structure.

And the optimization scheme is four: the sliding hinge structure comprises a sliding hole formed in the supporting piece, the supporting piece is fixed to the rear axle, a swing rod is fixedly connected to the steel plate and located in the sliding hole, and the swing rod can swing in the sliding hole and can move along the sliding hole. The swing rod can swing in the sliding hole and can move along the sliding hole, so that the supporting piece can support the steel plate when the vehicle body does not sink and can swing when the vehicle body sinks. For the articulated, both saved U type bolt, strengthened structural strength again, prevent that articulated department atress and damage.

And the optimization scheme is five: the sliding hinge structure comprises a sliding hole formed in a supporting piece, the supporting piece is fixed to the rear axle, a swing rod is fixedly connected to the steel plate, a shaft sleeve is fixedly connected to the swing rod and located in the sliding hole, a blocking portion for preventing the shaft sleeve from being separated from the supporting piece is arranged on the shaft sleeve, an internal space allowing the blocking portion to swing is formed in the supporting piece, the blocking portion is located in the internal space, the cross section area of the sliding hole is larger than that of the shaft sleeve, the cross section area of the sliding hole is smaller than that of the blocking portion, and the length of the shaft sleeve is larger than that of. The blocking portion prevents the shaft sleeve from being separated from the support member when the vehicle body moves. The provision of the bushing prevents the oscillating lever from being worn when moving in the slide hole. On the other hand, the shaft sleeve can swing in the sliding hole and can move along the sliding hole, so that the supporting piece can support the steel plate when the automobile body does not sink and can swing when the automobile body sinks. For the articulated, both saved U type bolt, strengthened structural strength again, prevent that articulated department atress and damage.

And the optimization scheme is six: the rotary connecting structure comprises a U-shaped bolt, the U-shaped bolt is sleeved on the rear axle, the upper end of the U-shaped bolt is fixedly connected to the steel plate, and a rotary gap is formed between the rear axle and the U-shaped bolt. The supporting piece is saved, and a large amount of cost is saved because the steel plate is directly contacted with the rear axle.

The optimization scheme is seven: the rotary connecting structure comprises a supporting piece, the supporting piece is fixed on a steel plate, the supporting piece is placed on the upper portion of the rear axle, a U-shaped bolt is sleeved on the rear axle, the upper end of the U-shaped bolt is fixedly connected onto the steel plate, the supporting piece is located in an opening of the U-shaped bolt, and a rotary gap is formed between the rear axle and the U-shaped bolt. The support piece is arranged to support the steel plate,

and the optimization scheme is eight: an elastic buffer is arranged in the rotating gap. The elastic buffer piece prevents abrasion of the U-shaped bolt and the rear axle due to friction, and reduces impact force caused by braking.

And the optimization scheme is eight: one end of the steel plate, which is far away from the anti-rotation piece, and a hinge point of the vehicle body are connected to the vehicle body in a sliding mode in the direction capable of adapting to deformation of the steel plate. Can adapt to the slidable pin joint that the steel sheet warp, steel sheet one end slidable when making the steel sheet warp to it is bigger that the steel sheet deflection, automobile body damping ability is stronger.

Drawings

FIG. 1 is a schematic front view of a movable connection structure of a steel plate and a rear axle in the prior art;

FIG. 2 is a partial cross-sectional view of FIG. 1;

FIG. 3 is a schematic front view of the structure of example 1;

FIG. 4 is a schematic view at A in FIG. 3;

FIG. 5 is a schematic front view of the structure of example 2;

FIG. 6 is a schematic front view showing the structure of embodiment 3;

FIG. 7 is a schematic front view showing the structure of the preferred embodiment 4;

FIG. 8 is a schematic front view showing the structure of the preferred embodiment 5;

FIG. 9 is a schematic front view showing the structure of the preferred embodiment 6;

FIG. 10 is a schematic front view showing the structure of the preferred embodiment 8;

FIG. 11 is a schematic front view showing the structure of the preferred embodiment 9;

FIG. 12 is a schematic front view of the structure of the preferred embodiment 10;

FIG. 13 is an enlarged view at B in FIG. 12;

FIG. 14 is a schematic front view of the structure of example 12.

Detailed Description

The present invention will be described in further detail below by way of specific embodiments:

reference numerals in the drawings of the specification include: the automobile body 1, the steel sheet 2, the stopper 3, the rear axle 4, prevent revolving a support 5, prevent revolving a 6, U type bolt 7, clamping screw 8, path section 9, big footpath section 10, support piece 11, articulated portion 12, elastic buffer 13, articulated seat 14, axle sleeve 15, five hole clamp plates 16.

Example 1: the mobile connection structure of steel sheet and rear axle in this scheme, as shown in fig. 3, including rear axle 4 and steel sheet 2 (the terminology is leaf spring or leaf spring), rear axle 4 is cylindricly (or tubulose), and steel sheet 2 both ends articulate on automobile body 1 through first round pin axle. A long hole is formed in the left side of the vehicle body 1, and a first pin shaft on the left side of the steel plate is installed in the long hole and can slide in the long hole. Rear axle 4 is located steel sheet 2 below, fixedly connected with stopper 3 on

rear axle

4, and 3 lower part fixedly connected with of stopper prevent revolving a support 5, prevent revolving to articulate on a support 5 to have and prevent revolving a 6, prevent revolving a 6 and be shaft-like, prevent revolving the right-hand member of 6 and articulate on automobile body 1. A movable connecting structure is arranged between the steel plate 2 and the rear axle 4, and when the steel plate 2 sinks under the stress of the vehicle body 1 and deforms, the rear axle 4 can swing or rotate along with the movement of the anti-rotation piece 6 through the movable connecting structure.

As shown in fig. 4, the movable connection structure includes a vertical fixing screw 8, the fixing screw 8 is used as a swing rod, the upper end of the fixing screw 8 is provided with a screw thread, the lower end of the fixing screw 8 is sleeved and fixed with a shaft sleeve 15, and the shaft sleeve 15 is fixed below the steel plate 2 through the fixing screw 8 and a nut. The shaft sleeve 15 is in a stepped cylindrical shape, and the large-diameter section 10 of the shaft sleeve 15 is used as a blocking part. The upper part of the rear axle 4 is fixedly welded with a supporting piece 11, the supporting piece 11 is a steel plate seat, and the supporting piece 11 is in a square frame shape. The top of the support member 11 is integrally formed with a sliding hole, which is a circular hole. The small diameter section 9 of the shaft sleeve 15 passes through the sliding hole, and the diameter of the sliding hole is larger than the small diameter section 9 of the shaft sleeve 15 and smaller than the large diameter section 10 of the shaft sleeve 15. The length of the small diameter section 9 of the shaft sleeve 15 is larger than that of the sliding hole, and the volume of the inner space of the supporting piece 11 is larger than that of the shaft sleeve 15, so that the shaft sleeve 15 can be allowed to swing in the supporting piece 11.

When the vehicle body 1 bears the weight and sinks, the steel plate 2 deforms to enable the left end of the steel plate 2 to move leftwards by a small displacement because of the long hole and the left first pin shaft. At this time, the rotation preventing member 6 swings upward, and since the sleeve 15 can swing inside the supporting member 11 (as shown by a dotted line in fig. 4), the supporting member 11 can swing with respect to the sleeve 15, that is, the rear axle 4 can swing, so that the rotation preventing member 6 can push the stopper 3 to swing clockwise to accommodate the displacement of the left end of the rotation preventing member 6 when the rotation preventing member 6 swings upward, thereby preventing the rotation preventing member 6 from being deformed or broken by the reaction force of the stopper 3. Meanwhile, the sliding hinge structure formed by the sliding hole in the support member 11 and the shaft sleeve 15 when the swing does not occur enables the steel plate 2 to be placed on the support member 11, and the shaft sleeve and the sliding hole are prevented from being damaged when the vehicle body does not bear large weight.

Example 2: in addition to embodiment 1, as shown in fig. 5, the movable connection structure includes a vertical fixing screw 8, the fixing screw 8 is used as a swing lever, the fixing screw 8 is a stud bolt, a disk-shaped hinge portion 12 is integrally formed at a lower end of the fixing screw 8, and the fixing screw 8 is fixed to the steel plate 2 by a nut. A hinge cavity matched with the hinge part 12 in size is integrally formed in the rear axle 4, and the hinge part 12 is rotatably connected in the hinge cavity. The rear axle 4 is integrally formed with an opening for allowing the fixing screw 8 to swing. An elastic buffer 13 is arranged between the hinge cavity and the hinge part 12, and the elastic buffer 13 is a rubber pad.

When the vehicle body 1 bears the weight and sinks, the steel plate 2 deforms to enable the left end of the steel plate 2 to move leftwards by a small displacement because of the long hole and the left first pin shaft. At this time, the rotation preventing member 6 swings upward, and the hinge portion 12 rotates in the hinge chamber, so that the rotation preventing member 6 can push the stopper 3 to rotate clockwise to accommodate the displacement of the left end of the rotation preventing member 6 occurring when the rotation preventing member 6 swings upward, thereby preventing the rotation preventing member 6 from being deformed or broken by the reaction force of the stopper 3.

Example 3: as shown in fig. 6, on the basis of embodiment 1, the movable connection structure includes a vertical fixing screw 8 and a supporting member 11, the fixing screw 8 is used as a swing rod, the supporting member 11 is a steel plate seat, the supporting member 11 is fixed on the steel plate 2 through a fixing bolt, the lower portion of the supporting member 11 is arc-shaped, and the supporting member 11 is placed on the upper portion of the rear axle 4. The rear axle 4 is sleeved with a U-shaped bolt 7, and the upper end of the U-shaped bolt 7 is fixedly connected to the steel plate 2 through threads. The support 11 is located in the opening of the U-bolt 7, and the space formed by the lower part of the support 11 and the U-bolt 7 allows the rear axle 4 to rotate therein, i.e. there is a rotational gap between the rear axle 4 and the U-bolt 7. An elastic buffer 13 is installed in the rotating gap, and the elastic buffer 13 is a rubber pad.

When the vehicle body 1 bears the weight and sinks, the steel plate 2 deforms to enable the left end of the steel plate 2 to move leftwards by a small displacement because of the long hole and the left first pin shaft. At this time, the rotation preventing member 6 swings upward, and the bridge rotates in a space formed by the lower portion of the support member 11 and the U-bolt 7, so that the rotation preventing member 6 can push the stopper 3 to rotate clockwise to accommodate displacement of the left end of the rotation preventing member 6 when the rotation preventing member 6 swings upward, thereby preventing the rotation preventing member 6 from being deformed or broken by a reaction force of the stopper 3.

Example 4: on the basis of embodiment 1, as shown in fig. 7, the movable connection structure includes a U-shaped bolt 7, the U-shaped bolt 7 is sleeved on the rear axle 4, and the upper end of the U-shaped bolt 7 is fixedly connected to the steel plate 2 through threads. The space formed by the lower part of the steel plate 2 and the U-bolt 7 allows the rear axle 4 to rotate therein, i.e. there is a rotational clearance between the rear axle 4 and the U-bolt 7.

Example 5: in embodiment 1, as shown in fig. 8, the large diameter section 10 of the sleeve 15 is hemispherical, and the lower half of the sliding hole has a hemispherical hole shape matching the large diameter section 10 of the sleeve 15.

Example 6: on the basis of embodiment 1, as shown in fig. 9, the movable connection structure includes a support member 11, the support member 11 is a steel plate seat, and the support member 11 is welded and fixed on the upper portion of the rear axle 4. The steel plate 2 is fixed with a hinge seat 14 through threads, and the support piece 11 is hinged on the hinge seat 14 through a second pin shaft. A rubber cushion is adhered on the support 11 and is located between the hinge seat 14 and the support 11.

Example 7: in the embodiment 6, as shown in fig. 9, a vertical sliding slot is integrally formed on the hinge base 14, and the second pin is installed in the sliding slot so that the supporting member 11 can move up and down relative to the hinge base 14. The hinge seat 14 is placed on the support 11, and a rubber cushion is adhered on the support 11 and positioned between the hinge seat 14 and the support 11.

When the swing does not occur, the sliding hinge structure formed by the sliding groove hole and the second pin shaft enables the steel plate 2 to be placed on the supporting piece 11, and the shaft sleeve and the sliding hole are prevented from being damaged when the automobile body does not bear large weight.

Example 8: on the basis of embodiment 1, as shown in fig. 10, the movable connection structure includes a vertical fixing screw 8, the fixing screw 8 is used as a swing rod, the fixing screw 8 is a double-threaded screw, and a shaft sleeve 15 is fixed to the lower end of the fixing screw 8 in a sleeved manner and is in threaded connection with a nut to prevent the shaft sleeve 15 from sliding downwards. The shaft sleeve 15 is shaped like a stepped cylinder. A swing cavity is integrally formed in the rear axle 4, a sliding hole is integrally formed in the rear axle 4 and communicated with the swing cavity, the sliding hole is located in the top of the rear axle 4, and the sliding hole is a round hole. The shaft sleeve 15 is positioned in the swinging cavity, the small-diameter section 9 of the shaft sleeve 15 penetrates through the sliding hole, and the diameter of the sliding hole is larger than the small-diameter section 9 of the shaft sleeve 15 and smaller than the large-diameter section 10 of the shaft sleeve 15. The length of the small diameter section 9 of the shaft sleeve 15 is larger than that of the sliding hole, and the volume of the swing cavity is larger than that of the shaft sleeve 15, so that the shaft sleeve 15 can be allowed to swing in the swing cavity.

Example 9: on the basis of embodiment 1, as shown in fig. 11, the movable connection structure includes a hinge seat 14, the hinge seat 14 is fixed to the lower portion of the steel plate 2 by welding, and a rod-shaped hinge portion 12 is fixed to the top of the rear axle 4 by welding. Hinge holes are integrally formed in the hinge seats 14, hinge pins are integrally formed at the tops of the hinge parts 12, and the hinge pins are rotatably connected in the hinge holes to form hinges between the rear axle 4 and the steel plate 2.

Example 10: in addition to embodiment 1, as shown in fig. 12, the rear axle 4 is located above the steel plate 2. As shown in fig. 13, the movable connection structure includes a vertical fixing screw 8, the fixing screw 8 is used as a swing rod, and the lower end of the fixing screw 8 is provided with a screw thread. The upper end sleeve of the fixing screw rod 8 is provided with a shaft sleeve 15, and the shaft sleeve 15 is fixed above the steel plate 2 through the fixing screw rod 8 and a nut. The shaft sleeve 15 is in a stepped cylindrical shape, and the large-diameter section 10 of the shaft sleeve 15 is used as a blocking part. The lower part of the rear axle 4 is fixedly welded with a supporting piece 11, the supporting piece 11 is a steel plate seat, and the supporting piece 11 is in a square frame shape. The lower part of the support member 11 is integrally formed with a sliding hole, which is a circular hole. The small diameter section 9 of the shaft sleeve 15 passes through the sliding hole, and the diameter of the sliding hole is larger than the small diameter section 9 of the shaft sleeve 15 and smaller than the large diameter section 10 of the shaft sleeve 15. The length of the small diameter section 9 of the shaft sleeve 15 is larger than that of the sliding hole, and the volume of the inner space of the supporting piece 11 is larger than that of the shaft sleeve 15, so that the shaft sleeve 15 can be allowed to swing in the supporting piece 11.

When the vehicle body 1 bears the weight and sinks, the steel plate 2 deforms to enable the left end of the steel plate 2 to move leftwards by a small displacement because of the long hole and the left first pin shaft. At this time, the rotation preventing member 6 swings upward, and since the sleeve 15 can swing in the supporting member 11, the supporting member 11 can swing with respect to the sleeve 15, that is, the rear axle 4 can swing (as shown by a dotted line in fig. 13), so that the rotation preventing member 6 can push the stopper 3 to swing clockwise to accommodate the displacement of the left end of the rotation preventing member 6 when the rotation preventing member 6 swings upward, thereby preventing the rotation preventing member 6 from being deformed or broken by the reaction force of the stopper 3.

Example 11: on the basis of embodiment 1, the swing joint structure includes support piece 11, and support piece 11 is the steel sheet seat, and support piece 11's top is equipped with the sliding hole, and screw thread fixedly connected with swinging arms on the steel sheet 2, swinging arms are located the sliding hole. The sliding hole is a round hole, and the length of the swinging rod is greater than that of the sliding hole. The cross-sectional area of the slide hole is larger than the cross-sectional area of the swing lever so that the swing lever can swing in the slide hole and can move along the slide hole.

Example 12: on the basis of the embodiment 1, as shown in fig. 14, the long hole at the hinge joint of the left end is removed, and the left end of the steel plate is directly hinged on the vehicle body. In the scheme, when the vehicle body 1 bears the weight and sinks, the steel plate 2 deforms to enable the middle part of the steel plate 2 to deform upwards relative to the vehicle body, and two ends of the steel plate 2 cannot move in the horizontal direction, so that the steel plate can only ascend by a small distance. At this time, the rotation preventing member 6 swings upward, and since the shaft sleeve 15 can swing in the supporting member 11, the supporting member 11 can swing with respect to the shaft sleeve 15, that is, the rear axle 4 can swing, so that the rotation preventing member 6 can push the brake 3 to swing clockwise to adapt to the displacement of the left end of the rotation preventing member 6 when the rotation preventing member 6 swings upward, thereby preventing the rotation preventing member 6 from being deformed or broken by the reaction force of the brake 3. Meanwhile, the sliding hinge structure formed by the sliding hole in the support member 11 and the shaft sleeve 15 when the swing does not occur enables the steel plate 2 to be placed on the support member 11, and the shaft sleeve and the sliding hole are prevented from being damaged when the vehicle body does not bear large weight.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. But mobile connection structure of steel sheet and rear axle, its characterized in that: including being fixed with rear axle, the both ends of taking the stopper of preventing revolving the piece articulate on motor vehicle body and play the steel sheet of cushioning effect when the automobile body atress sinks, its characterized in that: be equipped with swing joint structure between steel sheet and the rear axle, the steel sheet is kept away from the one end of preventing revolving a piece and the pin joint of automobile body on the automobile body at the direction sliding connection that adaptable steel sheet warp, swing joint structure is the articulated connection structure of steel sheet and rear axle, rear axle and steel sheet have the slip hinge structure of vertical direction displacement when articulated connection structure is the swing, slip hinge structure is including setting up the slip hole on support piece, and support piece is fixed on the rear axle, fixedly connected with swinging arms on the steel sheet, and the swinging arms is located the slip hole, and the swinging arms can swing and can move along the slip hole in the slip hole, is equipped with the support piece that supports the steel sheet between rear axle and the steel sheet, and when the steel sheet warp because of the automobile body atress sinks, can swing and relative movement can take place for rear axle and steel sheet along with the motion of preventing revolving a piece through swing.

2. The movable connecting structure of the steel plate and the rear axle according to claim 1, wherein: the sliding hinge structure comprises a sliding hole formed in a supporting piece, the supporting piece is fixed to the rear axle, a swing rod is fixedly connected to the steel plate, a shaft sleeve is fixedly connected to the swing rod and located in the sliding hole, a blocking portion for preventing the shaft sleeve from being separated from the supporting piece is arranged on the shaft sleeve, an internal space allowing the blocking portion to swing is formed in the supporting piece, the blocking portion is located in the internal space, the cross section area of the sliding hole is larger than that of the shaft sleeve, the cross section area of the sliding hole is smaller than that of the blocking portion, and the length of the shaft sleeve is larger than that of.