JP2843765B2 - Tire chains for work vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire chain used for performing snow removal work or the like using a working vehicle such as a tractor or a wheel loader.

[0002]

2. Description of the Related Art Tires and wheels mounted on working vehicles such as tractors and wheel loaders are provided with large propulsion lugs on their outer peripheries. In fields and irregular terrain, the propulsion lugs reliably capture the ground and provide strong thrust. Although it can run, slipping is likely to occur on a snow-packed road surface or a frozen road surface, and it has been carried out to replace wheels with special spiked wheels, or to attach metal tire chains to tire wheels.

[0003]

However, the wheels for work vehicles as described above are generally large and heavy, and the weight of the vehicle body itself is large. It took time, and the wheels with special spikes were also expensive. Also, since the thrust of the work vehicle is large, when mounting a metal tire chain, it is necessary to securely support the tire chain itself on the outer periphery of the wheel. It took a lot of trouble to connect to. The present invention has been made in view of such circumstances, and provides a tire chain that can be mounted on a tire wheel with relatively simple operation and that can be used with sufficient correspondence to strong thrust. It is intended to be.

[0004]

In order to achieve the above object, a tire chain for a working vehicle according to the present invention is a work for mounting on a tire wheel having protruding lugs arranged in a staggered pattern on the outer periphery thereof. A spike is implanted in a meandering base belt which is a tire chain for a car, which is fitted and disposed between the protruding lugs arranged in a staggered manner,
A tensioner provided between the propulsion lugs is connected to the tip of each meandering convex portion of the base belt.

[0005]

According to the above construction, the meandering base belt provided with the spikes is fitted into the meandering grooves between the protruding lugs arranged in a staggered manner, so that the base belt is circumferentially and laterally inserted into the base belt. Even if a force acts, it is firmly fixed to the wheel by engagement with the propulsion lug. In addition, since the tensioning device is inserted into the groove between the propulsion lugs, the tensioning device can be appropriately guided to the side of the wheel without displacement and tensioning operation can be performed, and the tensioning device does not easily come into direct contact with the road surface.

[0006]

Therefore, according to the present invention, the meandering base belt itself can be securely fixed without displacement in the circumferential and lateral directions by engagement with the propulsion lug, and the tensioning member is not particularly strongly stretched. Nevertheless, the tires can be securely fixed to the wheels, and the chain can be securely mounted without any displacement while being easy to handle.

[0007]

FIG. 1 shows a side view of a wheel loader used for snow removal work. The wheel loader 1 connects a front vehicle body 3 equipped with a shovel device 2 and a rear vehicle body 6 on which a control unit 4 and an engine 5 are mounted so that the front vehicle body 3 can be bent freely. It is configured to swing and steer. As shown in FIGS. 7 and 8, the lift cylinder 8 in the shovel device 2 is used.
Under the cylinder cover 9 is a U-shaped cylinder cover 9
Are pivotally connected to a connection point between the piston rod 8b and the arm 2a, and are slidably supported in the longitudinal direction with respect to the cylinder tube 8a. Select the stopper pin 11 on the cylinder tube 8
By bringing the stopper pin 11 into contact with the tip surface of
When the excavator device 2 is lifted for maintenance or the like, the cylinder cover 9 can limit the shortening of the lift cylinder 8. As shown in FIG. 9, a support arm 12 connected to the engine 5 is connected to an engine mounting bracket 14 provided on a vehicle body frame 13 via an anti-vibration rubber 15. The upper movement limit of the support arm 12 is restricted by the inverted L-shaped stopper 17 welded and fixed to the lower receiving member 16.

The front vehicle body 3 and the rear vehicle body 6 are provided with driven tire wheels 20, respectively, and each tire wheel 20 is provided with a tire chain 21 according to the present invention.

[0009] As shown in FIG.
A protruding lug 22 protruding from the outer periphery of the protruding lug 22 is used. As shown in FIGS. 3 to 5, the tire chain 21 includes a base belt 23 formed in a meandering shape so as to fit between the protruding lugs 22 arranged in a staggered manner, and the tire belt 21 as a tire. It is composed of a tensioning tool 24 and a tensioning rope 26 which are fastened and fixed to the wheel 20. The base belt 23 is formed of a resin material having excellent wear resistance. Both ends of the base belt 23 are connected by connecting metal fittings 23a. And the resin-coated wire at the tip of each meandering convex portion.
4 is attached.

Each tensioning member 24 extends to the side of the wheel along the groove between the propulsion lugs 22, and as shown in FIG. The tire chains 21 are wound around and fixed to the tire wheels 20 by connecting the extending ends 24 respectively. In this manner, the meandering base belt 23 is fitted into the meandering groove between the protruding lugs 22 arranged in a staggered manner, so that even if circumferential and lateral forces act on the base belt 23, The engagement with the propulsion lug 22 firmly fixes the tire wheel 20. In addition, the upholstery 24 is the propulsion lug 2
Since the fitting 24 can be easily positioned without shifting in the circumferential direction, it can be prevented from directly contacting the road surface.

[0011] As shown in FIG.
6 may be further attached to the center side with a rubber band 27.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a wheel loader.

FIG. 2 is a perspective view of a tire wheel.

FIG. 3 is an exploded plan view of a tire chain.

FIG. 4 is a side view of a tire wheel equipped with a tire chain.

FIG. 5 is a partial plan view of a tire wheel on which a tire chain is mounted.

FIG. 6 is a partially cutaway front view showing a connection portion of the tire chain.

FIG. 7 is a side view showing a lift cylinder of the shovel device.

FIG. 8 is a front view of a lift cylinder.

FIG. 9 is a front view of an engine mounting connection portion.

FIG. 10 is a side view showing another embodiment of the tire chain mounting structure.

[Explanation of symbols]

 Reference Signs 20 tire wheel 22 propulsion lug 23 base belt 24 upholstery 25 spike

Claims (1)

(57) [Claims] 1. A tire chain for a working vehicle to be mounted on a tire wheel (20) protruding from a protruding lug (22) arranged on the outer periphery in a staggered manner, the propulsion lugs arranged in a staggered manner. Spikes (25) are implanted in a meandering base belt (23) which is fitted and disposed between (22) and a protruding lug ( 2
2) A tire chain for a work vehicle, wherein a tensioner (24) arranged along the gap is connected.