JPH0529804U - Tire track - Google Patents

Abstract

(57) [Summary] [Purpose] When a vehicle crosses a railroad crossing, etc., it prevents the rear tires from coming into contact with the road surface inside the railroad crossing and causing the rear track wheels to float up from the rails and derail. [Structure] An axle 10 of a rear tire 3 of a vehicle 1 having tires 2 and 3 and bearings 5 and 6 supported so as to be able to move up and down and a spring material 12 is compressed by a cylinder 17 so as to be raised with respect to a vehicle body 11. And a vehicle for traveling along the railroad tracks 5, 6 in which a rear wheel tire 3 is temporarily lifted at a railroad crossing or the like to prevent the rear tire 3 from contacting a road surface or the like in the railroad crossing. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention can be operated in the same way as a general vehicle when traveling on a general road, and when traveling on a track such as a railroad, by driving the rear tires while supporting the vehicle body on the track by the track wheels provided on the front and rear respectively. , A vehicle that also serves as a tire running track that runs along the track.

[0002]

[Prior Art]

 A lot of work such as accident handling and various inspections is carried out in rail cars that run on tracks such as trains, and these works require quick maneuverability. Conventional vehicles that meet this type of requirement are tracked vehicles equipped with work machines such as cranes.However, if the track is damaged, there is a problem that it cannot be brought close to the accident site. A vehicle has been proposed in which a track is provided on a truck in addition to tires so that the truck can travel on the road and on the track.

This vehicle is provided with two left and right tires called double tires on the rear tires, and one of them (usually the inner tire) is driven by contacting the raceway surface. Although the force is applied, the outer tire is idling at a position off the track surface. Therefore, when passing through a railroad crossing or a point, the outer tire hits the road surface or other track surface that is raised to almost the same surface as the bearing ring, and the vehicle is lifted by the raised amount, and the rear bearing ring There is a very high risk of derailment.

[0004]

[Problems to be solved by the invention]

 The present invention was made in order to solve the problems of the vehicle using both the conventional tire and the bearing ring, and when the vehicle crosses a railroad crossing, the rear wheel tires are attached to the axle and its spring material. Tires that do not cause a shock to the vehicle and are not susceptible to derailment when passing through a railroad crossing, etc. The problem to be solved is to provide a vehicle that also serves as a running track.

[0005]

[Means for Solving the Problems]

 As a means for solving the above-mentioned problems, a vehicle for combined use with a tire traveling track of the present invention supports a front part of the vehicle by lifting the front tires from above the track surface when the vehicle for road traveling travels on the track. However, there is a pair of front races that guide rolling on the raceway and a pair of rear races that guide the driving rear wheel tires on the raceway without floating from the raceway surface. Each of them is arranged so as to be able to move up and down, and is provided with an axle lifting device that allows the axle of the rear tire to be raised and lowered with respect to the vehicle body through a spring material.

[0006] Further, it is preferable that the axle lifting device for the rear tires is made operable by a driver in the driver's seat of the vehicle or the like. When the driver operates the tire axle lifting device with a switch, etc., the vehicle runs by inertia with only the rear wheel tires pulled up to the vehicle body, and then operates the axle lifting device again after passing through a railroad crossing. It is possible to return to the running condition on the track.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of an embodiment of a vehicle for combined use of a tire traveling track of the present invention, and FIG. 2 is an axle of a rear tire mounted on the vehicle of FIG. FIG. 3 is an explanatory view of the lifting device, FIG. 3 is a rear view of the vehicle of FIG. 1 when traveling on a normal track, and FIG. 4 is a rear view of the vehicle of FIG.

First, in FIGS. 1 and 3, 2 is a front wheel tire of the vehicle 1, 3 is also a rear wheel tire, the rear wheel tire 3 has a double tire type, and the tire width inside thereof is a track type. The width is the same as the width of No. 4, and is similar to the front wheel tire 2 and is for traveling on general roads. Reference numeral 5 denotes a pair of front track wheels provided on the front part of the vehicle 1 so as to be able to move up and down. The front track wheels 5 completely lift the front tires 2 from the track 4 during track running. It supports the front part of the vehicle and guides the vehicle 1 in a rollable manner.

Reference numeral 6 designates a pair of rear bearing rings provided on the rear portion of the vehicle 1 so as to be movable up and down by a hydraulic cylinder or the like. The vehicle 1 guides rolling of the vehicle 1 without being further lifted, and 9 is a luggage carrier of the vehicle 1. Therefore, as shown in FIG. 2, the axle 10 of the rear tire 3 of the vehicle 1 is supported by the main body frame 11 via the spring member 12, but the arm protruding to the side portion of the axle 10 is provided. An operation rod 13 penetrating a hole provided in 22 is provided, and this operation rod 13 can be moved up and down via an L-shaped arm 14 by a hydraulic cylinder 17 operated by a hydraulic pump 15, an electromagnetic valve 16 and the like. ing.

An appropriate play indicated by H is provided between the lower end of the operation rod 13 and the arm 22, and the axle 10 and the spring member 12 are integrated with each other by a bolt 18 so that the main body A stopper 19 is provided at a portion of the lower portion of the frame 11 facing the spring material 12. A switch 24 for raising a rear wheel tire, which is provided in front of a driver's seat 23 of this vehicle, is connected to an electromagnetic valve 16 by an electric wire 25, and by operating this switch 24, a rear wheel is supported on the axle 10. The wheel tires 3 are raised.

As described above, the driver operates the switch 24 of the axle lifting device for the rear wheel tire 3 constituted by the respective parts shown in FIG. 2 to operate the hydraulic cylinder 17 to operate the L-shaped arm 14. The operating rod 13 is raised through the play “H” until it comes into contact with the stopper 19, and the rear wheel tire 3 together with the axle 10 does not come into contact with the road surface of the railroad crossing or other rail surface at the point. Will be lifted.

When the vehicle is used as a tire running track having the above-described configuration, during normal running on the track, as shown in FIG. 3, the rear wheel tires 3 are used as the drive wheels by rolling the track 4 and using the rear track wheels. Reference numeral 6 has a function of rolling guide on the track 4. Therefore, when the driver crosses a railroad crossing or a point, the driver operates the switch 24 for lifting and lowering the axle of the driver's seat 23 so that the axle 10 of the rear tire 3 is pushed toward the body frame 11 while pressing the spring material 12. As shown in FIG. 4, the rear wheel tires 3 do not come into contact with the road surface 8 and the like, so that the rear race ring 6 does not derail from the track 4. The driving of the rear wheel tires 3 during the running during that time does not function and may stop temporarily or become weak, but the inertia of the vehicle 1 that has run up to that time is sufficient and the running is enough to cross the level crossing. Is maintained. Next, after passing a railroad crossing or the like, by operating the switch 24, the rear wheel tires 3 are returned to the track 4 again and the normal track running is performed.

[0013]

[Effect of the device]

 As described above, the vehicle for combined use with the tire running track of the present invention allows the front wheel tire to float above the track surface and roll on the track while supporting the front part of the vehicle when running on the track of a vehicle for road use. A pair of front raceways that guide the vehicle and a pair of rear raceways that guide the driven rear wheel tires to roll freely on the raceway without floating above the raceway are respectively arranged so that they can be raised and lowered. In addition, an axle raising / lowering device is provided which allows the axle of the rear tire to be raised and lowered with respect to the vehicle body through a spring member.

Therefore, even when passing through railroad crossings, the rear track wheels are lifted from the rails and derailed by raising the rear wheel tires so as not to come into contact with the road surface of the railroad crossings by a simple operation of the driver. It is possible to drive safely without driving, improve safety, and improve the mobility of the vehicle. In particular, in the present invention, since the rear wheel tires are simply lifted with respect to the vehicle body while pressing the spring material together with the axles at the time of passage such as a railroad crossing, there is an advantage that the vehicle is not shocked and can be constructed at low cost. Yes, and since the rear tires rise completely above the raceway surface, the derailment prevention effect becomes more reliable.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of a vehicle for a tire running track according to the present invention.

FIG. 2 is an explanatory view of an axle lifting device for a rear tire mounted on the vehicle of FIG.

FIG. 3 is a rear view of the vehicle of FIG. 1 when traveling on a normal track.

FIG. 4 is a rear view of the vehicle of FIG. 1 when passing through a railroad crossing.

[Explanation of symbols]

1 vehicle 2 front tire 3 rear tire 4
Raceway 5 Front raceway wheel 6 Rear raceway wheel 10 Axle
11 body frame 12 spring material 13 operation rod 17 hydraulic cylinder 23 driver's seat 24 switch.

Claims (1)

[Scope of utility model registration request] 1. A pair of front raceways for guiding the front tires of the vehicle for road traveling so that the front tires are floated above the raceway surface to support the front portion of the vehicle while rolling freely on the raceway. , A pair of rear race rings that guide the rear tires to be driven so that they can roll on the race without floating above the race surface,
A vehicle that also serves as a tire running track and is provided with an axle lifting device that is vertically movable and that is capable of vertically moving the axle of the rear tire with respect to the vehicle body through a spring material.