JPH0532012U - Tire support device for industrial vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a support device for absorbing vibration from a road surface in a small diameter driven shaft of a front wheel of an industrial vehicle. [Structure] Between the assembly of the tire 15, the wheel housing 14, the bearing 13 and the shaft pin 11, insert elastic bushes 6 and 7 that use an elastic material such as rubber and protect the outer and inner diameters with iron plates. , The structure that can absorb the vibration from the road surface by the elastic bushes 6 and 7 is adopted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a front wheel support device for a reach type or narrow aisle type industrial vehicle.

[0002]

[Prior Art]

 In the conventional reach type, both front and rear wheels use wheels with solid tires made of rubber or urethane with a small diameter that does not let air in to secure stability from the space.

[0003]

[Problems to be solved by the device]

 The above-mentioned conventional structure has problems that the vibration from the road surface is transmitted and the riding comfort deteriorates and the noise increases. Therefore, it is possible to reduce the vibration from the road surface by using a suspension for the rear wheels that have a relatively large space, and there are many examples of adoption, but there is not enough space for the front wheels and a suspension can be installed. It is difficult, and when urethane, which is harder than rubber, is used as the material in terms of tire durability, there is also the problem that the running noise increases by several dB at the operator's ear.

[0004]

[Means for Solving the Problems]

 The present invention has been made in view of the above problems, and particularly when an elastic material such as urethane having a high hardness is used as a tire material, an elastic bush made of an elastic material such as rubber is used between the axle pin for mounting the wheel and the wheel housing. By inserting it, the overall rigidity of the tire and elastic bush together will be approximately the same as that of a rubber tire.

[0005]

[Action]

 Since the present invention adopts the above-mentioned configuration, the ride comfort is improved and the generation of noise can be prevented.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. Fig. 3 shows a perspective view of a reach type industrial vehicle. The body 1 has rear wheels 2 and front wheels 3, but since the front wheels 3 are attached to the reach legs 5, there is more space than the rear wheels 2. There are few, and it is difficult to provide a suspension.

FIG. 1 is a cross-sectional view showing the structure of a basic supporting device of the present invention. When an axle pin 11 attached to a reach leg 5 (not shown) is assembled with a wheel housing 14 together with a bearing 13, Insert the bushes 6 and 7 so that the shaft pin 11 and the bearing 13 are indirectly fixed.

The elastic bushes 6 and 7 are made of an elastic material such as rubber or urethane, the outer and inner diameters of which are protected by an iron plate, and absorb the vibration transmitted from one side. And has the effect of preventing transmission to the other side.

Therefore, the vibration transmitted from the road surface through the tire 15, the wheel housing 14, and the bearing 13 is absorbed by the elastic bushes 6 and 7, attenuated and transmitted to the shaft pin 11, so that the reach leg is reached. When it is transmitted to the vehicle body 1 via 5, the vibration from the road surface is effectively damped.

Further, in another embodiment shown in FIG. 2, in order to prevent vibration of the wheel housing 14 when soft rubber or the like is used as the elastic material in order to improve the performance of absorbing vibration, the side surface is provided on the side surface. This is an example in which the roller 16 is provided.

[0011]

[Effect of the device]

 As described in detail above, the shock absorbing action of the elastic bush inserted between the shaft pin and the bearing absorbs vibration from the road surface and transmits it to the vehicle body via the shaft pin and the reach leg. Is improved, and it can also be effective in reducing noise.

[Brief description of drawings]

FIG. 1 is a sectional view of a front wheel portion showing an embodiment of the present invention.

FIG. 2 is a sectional view of a front wheel portion showing another embodiment of the present invention.

FIG. 3 is a side view of a typical reach type industrial vehicle.

[Explanation of symbols]

 3 Front Wheel 5 Reach Leg 6 Elastic Bush 7 Elastic Bush 11 Axis Pin 13 Bearing 14 Wheel Housing 15 Tire 16 Side Roller

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location F16F 1/38 Z 8917-3J G10K 11/16 C 7350-5H

Claims (1)

[Scope of utility model registration request] 1. An elastic bush using an elastic material such as rubber between a shaft pin 11 and a wheel housing 14 and a bearing 13 provided on a reach leg 5 for mounting a front wheel 3 in a reach type or narrow aisle type industrial vehicle. 6 and 7 are inserted so that the shaft pin 11 and the bearing 13 are indirectly fixed, and the overall rigidity of the tire 15 and the elastic bushes 6 and 7 is almost equal to that of a rubber tire, A tire supporting device for an industrial vehicle, characterized in that side rollers 16 are provided if necessary.