JP2001270311A - Suspension device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suspension device having a lateral displacement support mechanism suitably used for a vehicle such a tank trailer in which a lateral rod, etc., cannot be attached. SOLUTION: The suspension device is provided with a leaf spring 5 of which one end is pivotally mounted to car body sides 1, 12 and which has an air spring between the other end and the car body sides 1, 12. A block 14 is mounted to the leaf spring 5 side and a lateral displacement stopper 17 facing to the block 14 is mounted to the car body sides 1, 12. A lateral displacement of the car body sides 1, 12 is supported by the block 14 and the lateral displacement stopper 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension device used for a trailer or the like.

[0002]

2. Description of the Related Art FIG. 5 is a front view showing an example of a conventional suspension system, wherein 1 is a body frame, 2 is an axle, 3 is an upper axle seat, 4 is a lower axle seat, 5 is a leaf spring, 6 Is a pad, and 7 is a U-bolt for fastening the axle 2 and the leaf spring 5. As shown in the side view of FIG. 2, the front end of the leaf spring 5 has a bolt 9 attached to a main hanger 8 welded to the body frame 1. An air spring 10 is mounted between the rear end of the leaf spring 5 and the vehicle body frame 1.

When a vehicle is a self-propelled truck, a vehicle body frame 1 and an axle 2 are generally used as a lateral displacement support mechanism as shown in FIG.
A lateral rod 11 or a V-shaped rod is mounted between the two.

[0004]

However, in the case of a tank trailer, a pipe 13 is provided below a cross member 12 connecting the left and right body frames 1 as shown in the front view of FIG. Since the tank trailer does not have a lateral displacement support mechanism such as the lateral rod 11 (see FIG. 5), the tank constituting the vehicle body is a rigid body. And when the cargo is rolled because of the liquid, it is in a single load state, and the generation of lateral force is larger than that of a normal trailer. However, since the lateral displacement support mechanism such as the lateral rod 11 is not provided as described above,
The main hanger 8 shown in FIG. 2 is the only mechanism that supports the lateral displacement, so that each part of the suspension device such as the main hanger 8 may be damaged or the fastening parts may be loosened. There is a risk of damage.

In view of such circumstances, an object of the present invention is to provide a suspension device having a lateral displacement support mechanism suitable for use in a vehicle such as a tank trailer on which a lateral rod or the like cannot be mounted. is there.

[0006]

According to a first aspect of the present invention, there is provided a suspension system having a leaf spring having one end pivotally connected to a vehicle body and an air spring between the other end and the vehicle body. The suspension device is characterized in that a lateral displacement stopper facing the block is attached to the vehicle body side, and the lateral displacement support mechanism is located near the leaf springs on both sides of the vehicle body, so the vehicle body side The degree of freedom in the arrangement of piping and the like in the above increases.

According to a second aspect of the present invention, there is provided a suspension device according to the first aspect, wherein a block is fixed to a fastening part between the leaf spring and the axle, and the fastening between the leaf spring and the axle is performed. The parts can be utilized as a part of the lateral displacement support mechanism, and the number of parts can be reduced.

According to a third aspect of the present invention, there is provided the suspension system according to the second aspect, wherein the block is formed integrally with a pad of a fastening part, and the block contacts a side surface of the leaf spring. In addition, it is possible to make the leaf spring bear the lateral force.

According to a fourth aspect of the present invention, there is provided the suspension system according to the first aspect, wherein a sheet having an elastic body is attached to one or both of the opposing surfaces of the block and the lateral displacement stopper. According to the above, the lateral displacement force can be buffered.

The invention according to claim 5 is characterized in that a sheet provided with an elastic body is detachably attached to one or both of the opposing surfaces of the block and the lateral displacement stopper. And the seat provided with the elastic body can be easily replaced.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view showing an example of the embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a perspective view showing an example of the embodiment of the present invention, and FIG. It is an enlarged view, and the same parts as those in FIG.

In the present invention, an upper axle seat 3 and a lower axle seat 4 are provided above and below the axle 2 as fastening parts between the axle 2 and the leaf spring 5 as in the prior art.
Further, a pad 6 is mounted on the upper axle seat 3, and
The leaf spring 5 and the axle 2 are fastened by bolts 7.

A block 14 is integrally formed from the upper part of a pad 6 which is one of fastening parts of the leaf spring 5 and the axle 2 to one side surface, and as shown in FIG.
The lower portion of 4 extends below the pad 6 and contacts the side surface of the leaf spring 5. One side of the block 14 which is not in contact with the leaf spring 5 is set to a vertical surface, and on this vertical surface, a sheet 15 provided with an elastic body such as a rubber insulator is removed with bolts 16 (see FIG. 3). Mounted as possible.

As shown in FIG. 1, a cross member 12 for connecting the left and right body frames 1 is disposed on the vehicle body side immediately above the axle 2, and a lateral displacement stopper 17 is attached to the lower surface thereof. The block 14 faces the side surface of the block 14 at an interval. A sheet 18 having an elastic body such as a rubber insulator is detachably attached to a side surface of the lateral displacement stopper 17 facing the block 14 by bolts 19 (see FIG. 3).

Next, the operation of the apparatus shown in FIGS. 1 to 4 will be described. When the body frame 1 and the cross member 12 on the vehicle body side shown in FIG. 1 attempt to make a lateral displacement, the seat 18 having the elastic body of the lateral displacement stopper 17 and the seat 15 having the elastic body of the block 14 come into contact with each other, Restrict lateral displacement on the vehicle body side. The hitting sound and contact force generated at this time are mitigated by the sheets 15 and 18 provided with the elastic bodies, but since the lateral load may be very large,
As shown in FIG. 4, the block 14 is brought into contact with the side surface of the leaf spring 5 to distribute the lateral load not only to the pad 6 but also to the leaf spring 5.

The sheets 15, 18 provided with the elastic body are liable to be worn if they are always in contact with each other,
On the other hand, if they are too far apart, an excessive lateral force is applied to the leaf spring 5 due to the inertia at the time when the lateral displacement occurs, which may cause breakage. It is desirable to have a small gap.

As described above, since the lateral displacement of the vehicle body is supported by the lateral displacement stopper 17 and the block 14, there is no lateral displacement supporting mechanism such as the lateral rod 11 (see FIG. 5) at the lower center of the vehicle body. The degree of freedom of arrangement of the pipe 13 and the like below the cross member 12 is increased. In addition, only one of the sheets 15 and 18 provided with the elastic body may be attached.

[0018]

According to the first aspect of the present invention, since the lateral displacement supporting mechanism is located near the leaf springs on both sides of the vehicle body, there is an effect that the degree of freedom of arrangement of pipes and the like on the vehicle body side is increased.

According to a second aspect of the present invention, a fastening part between the leaf spring and the axle is utilized as a part of the lateral displacement support mechanism.
There is an effect that the number of parts can be reduced. Claim 3
The invention of (1) has an effect that the lateral force is also borne by the leaf spring and a large lateral force is dispersed to prevent concentration of stress.

The invention according to claim 4 has an effect that the lateral displacement force can be buffered by the sheet provided with the elastic body. The invention of claim 5 has an effect that when the sheet provided with the elastic body is worn, it can be easily replaced.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a perspective view showing an example of an embodiment of the present invention.

FIG. 4 is a partially enlarged view of FIG. 1;

FIG. 5 is a front view showing an example of a conventional suspension device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body frame (body side) 5 Leaf spring 6 Pad (fastening part) 10 Air spring 12 Cross member (body side) 14 Block 15, 18 Seat provided with elastic body 17 Lateral displacement stopper

Claims (5)

[Claims] 1. A suspension system having a leaf spring having one end pivotally connected to a vehicle body and an air spring between the other end and the vehicle body, wherein a block is attached to the leaf spring, and the block is mounted on the vehicle body. A suspension device characterized by mounting a lateral displacement stopper facing the same. 2. The suspension according to claim 1, wherein a block is fixed to a fastening part between the leaf spring and the axle. 3. The suspension according to claim 2, wherein the block is formed integrally with a pad of a fastening part, and the block contacts a side surface of the leaf spring. 4. The suspension device according to claim 1, wherein a seat provided with an elastic body is attached to one or both of the opposing surfaces of the block and the lateral displacement stopper. 5. The suspension device according to claim 4, wherein a sheet provided with an elastic body is detachably attached to one or both of the opposing surfaces of the block and the lateral displacement stopper.