JPH0742939Y2 - Roller driven vehicle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a versatile vehicle which is mainly used for small tractors for agriculture, ski carriers and the like, and which is capable of efficiently traveling on a general road during transportation.

[Conventional technology]

In a vehicle that has 6 wheels and is always driven by 2 or 4 wheels (usually abbreviated as 6x2 or 6x4), when driving or running on uneven terrain, drive wheels and non-drive wheels (abbreviated as dead shaft wheels) )
And press the roller between, and give a driving torque to the dead shaft wheel through the roller to improve the climbing or rough terrain traveling ability,
A vehicle in which the roller is pulled up during normal road traveling and the roller drive is stopped is proposed by JP-A-61-180054. FIG. 4 is a perspective view of the conventional roller drive vehicle, in which 01 is a roller rollingly contacted with the drive wheel 1 and the non-drive wheel 2, 08 is a hydraulic cylinder for operating the roller 01, and 06 and 07 are A link connecting the roller 01 and the hydraulic cylinder 08. Further, FIG. 5 is a perspective view of a roller portion 01 used in a conventional roller drive vehicle. In FIG. 5, the surface member of the roller 01 is formed into a rhombic mesh shape by pressing or welding. The plate member 02 is used,
Further, the diamond-shaped mesh plate member 02 is connected to the boss portion 05 via the annular plates 03 and the spokes 04 provided on both side surfaces and the central portion, so that the roller 01 is formed.

[Problems to be solved by the device]

However, the conventional roller has a problem that the structure is complicated and the manufacturing cost is high.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional device, to provide a roller drive vehicle having a roller structure which can prevent slip and can be manufactured at low cost and which can increase the transmission torque.

[Means for Solving the Problems]

A roller drive vehicle according to the present invention has a drive shaft and a non-drive shaft arranged adjacent to each other, and a detachable roller is provided between the drive wheel and the non-drive wheel. In a roller drive vehicle that transmits a driving force from a wheel to the same non-drive wheel through the same roller, the rollers have a same shaft center and are arranged opposite to each other, and can rotate about a coaxial center as a support shaft. It is characterized in that it is composed of at least two side plates that are axially supported by and a plurality of bar members that are arranged in parallel with the support shaft and that connect the outer peripheries of the side plates to each other.

[Action]

The roller-driven vehicle according to the present invention has a roller structure composed of at least two side plates and a plurality of rods interconnecting the outer peripheries of the side plates.
It can be manufactured at low cost.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.

FIG. 1 shows a vehicle in which a driving shaft 29 and a non-driving shaft (dead shaft) 30 are vertically arranged adjacent to each other via a spring, and a driving wheel 1 and a non-driving wheel (dead shaft wheel) 2 are provided. FIG. 3 is a perspective view of an embodiment of a utility vehicle that includes a roller 3 that can be engaged and disengaged, and that makes the non-driving wheel 2 in a non-grounded state when the roller 3 is disengaged. A person has already applied for a patent. In FIG. 1, the roller 3 is operated by an actuator 3a via a shaft and a link, and the non-driving shaft 30 is operated by an actuator 2a via a link and a shaft.

FIG. 2 shows a first embodiment of the roller 3 used in the vehicle shown in FIG. In FIG. 2, the roller 3 includes a gear-shaped left and right side plates 4 symmetrically arranged perpendicularly to the axis, and a bar 5 such as a round bar or a square bar parallel to the axis in the side plate 4 portion. Each of them is welded, and the gap between the bar members 5 is set so that the tire chain cannot be inserted.

A bearing member (not shown) is provided at the axial center of the roller 3, and the side plate 4 and the bearing member are connected by spokes (not shown).

When the roller width is wide, the side plate 4 having the same shape is inserted in the middle of the side plate 4, and the rod 5 is welded to the side plate 4 to strengthen the structure.

FIG. 3 is a second embodiment in which a plate-shaped rod 6 is welded to the tooth side surface of the gear-shaped side plate 4 in the first embodiment shown in FIG. When the gap between the tooth bottom portions of 4 is wide, it is necessary to dispose the rod members 5 such as round rods or square rods with appropriate gaps, as in FIG.

Further, in the first and second embodiments, if the bar 5 and the plate-shaped bar 6 are covered with the rubber 7, the friction coefficient becomes large without damaging the tire of the wheel, and a high driving torque can be obtained without driving the driving wheel. Can be transmitted to the wheels.

The present roller can be applied to a roller driving vehicle other than that shown in FIG.

[Effect of device]

Since the roller structure of the roller-driven vehicle of the present invention is constructed as described above, the structure is simple and can be manufactured at low cost. Further, if the bar material is covered with rubber, the coefficient of friction is improved and there is no fear of damaging the rubber tire of the wheel. A large driving torque can be obtained, and the performance of climbing or rough terrain can be improved.

[Brief description of drawings]

1 to 3 relate to the present invention, FIG. 1 is a perspective view of a roller drive vehicle with a lift-up mechanism for non-drive shaft wheels when the roller is disengaged, and FIG. 2 is a perspective view of a first embodiment of the roller, Third
The drawing is a perspective view of the second embodiment. 4 and 5 show a conventional example, FIG. 4 is a perspective view of a conventional roller drive vehicle, and FIG. 5 is a perspective view of a roller used in the same vehicle. 1 ... driving wheel, 2 ... non-driving wheel, 29 ... driving shaft, 30
...... Non-driving shaft, 3 ... Roller, 4 ... Side plate,
5 ... bar, 6 ... bar, 7 ... rubber.

Claims (2)

[Scope of utility model registration request] 1. A drive shaft and a non-drive shaft are arranged adjacent to each other,
A roller drive vehicle in which a disengageable roller is provided between the driving wheel and the non-driving wheel, and the driving force from the driving wheel is transmitted to the non-driving wheel via the roller when the roller is engaged, The rollers are arranged opposite to each other with the same axis, and are arranged in parallel with at least two side plates that are rotatably supported by a support axis with a coaxial center. A roller-driven vehicle comprising a plurality of rods that connect the outer peripheries of the respective side plates to each other. 2. The roller drive vehicle according to claim 1, wherein the rod member is covered with rubber.