JPH051677U - Crawler structure of carrier - Google Patents

Abstract

(57) [Summary] [Purpose] In a vehicle equipped with crawlers, when traveling on level ground, it is the same as traveling on wheels. [Structure] A traveling vehicle in which a crawler is wound around front and rear wheels to arrange an idle wheel and a drive wheel, and a tread surface of the crawler centering on the traveling wheel can be bent at an angle of 180 ° or less. In front of the traveling wheel and inside the crawler, a wheel that comes into contact with the ground when the tread surface of the crawler is at a predetermined angle of 180 ° or less is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  This invention relates to a crawler structure for a carrier.

[0002]

[Prior art]

  The applicant first arranged two running wheels with crawlers wrapped around the running wheels. Then, fold the tread of the crawler centered on the center running wheel at an angle of 180 ° or less. A tuneable carrier is proposed as Japanese Utility Model Application No. 2-120382. like this By doing so, it is possible to obtain safe and good drivability both on stairs and on level ground. Because.

[0003]

[Problems to be solved by the device]

  However, this is fine for running on stairs, but when running on a flat ground Is the front half of the crawler (between the center running wheel and the front running wheel) fully grounded? In addition, dissatisfaction still remains in terms of smooth and quiet running performance.   The present invention addresses such a problem, and in short, the crawler is Even if it is equipped, it has a structure that does not differ from wheel driving when traveling on level ground. Of.

[0004]

[Means for Solving the Problems]

  Under such a problem, the present invention wraps crawlers in front of and behind the running wheels to allow free running. Wheels and drive wheels are arranged, and the tread surface of this crawler centering on the traveling wheel is 180 ° And a vehicle capable of being bent at an angle less than that, in front of the traveling wheel, and , The inside of the crawler has a tread surface of a predetermined angle of 180 ° or less. (EN) Provided is a crawler structure of a carrier provided with wheels for grounding.

[0005]

[Action]

  By taking such means, the traveling wheel portion and the wheel are Since the vehicle can travel, the same traveling performance as that of the wheel type can be obtained.

[0006]

【Example】

  1 is a side view of the carrier and FIG. 2 is a plan view of the carrier. Center of gravity of a chassis 16 in which the container 10, the engine 12, the mission 14, etc. are arranged in a substantially serial form A traveling wheel shaft 18 is horizontally provided in the vicinity. A large diameter running wheel 20 is attached to the running wheel shaft 18. And the rear end of the track frame 22 is rotatably fitted thereto, The idler wheel 24 is attached to the front end. Behind the traveling wheel shaft 18 is via the mission 14. A drive shaft 26 is installed horizontally, and drive wheels 28 are mounted on the drive shaft 26. And this Then, the crawler 30 is wound around the traveling wheel 20, the idler wheel 24, and the drive wheel 28. Note that In this example, the rear wheel is the drive wheel 28, but other running wheels 20 and idle wheels are used. It may drive the wheels 24.

[0007]   The track frame 22 is configured to be rotatable about the traveling wheel shaft 18 in a vertical plane. Therefore, by rotating it, the crawler 30 has a wound shape. It will be changed. The rotation of the track frame 22 is performed by the track frame 22. And an inclined frame 32 which is an upper part of the chassis 16 and which descends in the front direction. This is performed by expanding and contracting the hydraulic cylinder 34. In this case, the winding shape of the crawler 30 is , The tread centering on the running wheel 20 is covered over a predetermined angle of 180 ° or less. So that it can be changed.

[0008]   At the front of the chassis 16, a carrier frame 38 that rotates around a support shaft 36 in a vertical plane. The carrier frame 38 is provided with a hydraulic system provided between the carrier frame 38 and the chassis 16. By extending and retracting the Linda 40, it is possible to achieve both an upright posture and an inclined posture in which the sleeper lies on the inclined frame 32. To rotate. As a result, the luggage frame 38 is placed in the upright posture and the luggage 41 is loaded. Then, carry it in a safe tilted position. By doing this, when running on stairs If the tread surface of the crawler 30 is made straight by 180 °, the tread surface of the crawler 30 will be It takes steps and exerts high climbing power.

[0009]   By the way, the present invention, in the above-mentioned configuration, is in front of the traveling wheel 20 and in the closed state. Inside the roller 30, when the tread of the crawler 30 has a predetermined angle of 180 ° or less The wheels 42 to be grounded are provided. It is desirable that two wheels 42 are provided on the left and right. In addition, the support shaft 36 of the luggage carrier frame 38 described above can be substituted for the wheel shaft thereof. This As a result, if the tread of the crawler 30 travels at a predetermined angle of 180 ° or less, The traveling wheel 20 portion of the crawler 30 and the wheel 42 are in contact with each other to reduce the contact area. It performs the same function as running on wheels. In addition, the tread of the crawler 30 is 180 ° When this is set, the wheels 42 float relatively and do not touch the ground.

[0010]   Next, in the present invention, the handle 44 forming the rear end of the tilting frame 32 is placed above. The crawler 30 has a tread surface of 180 °. When this happens, the handle 44 will automatically switch to the upper position in conjunction with this. It is done. This concrete structure includes an inclined frame 32, a handle 44, and And the track frame 22 and the handle 44 are linked together. It is conceivable that they are connected by the black mechanism 48. This allows the track frame When the tread surface of the crawler 30 reaches 180 ° as the number 22 lowers, the movement of the crawler 30 is linked. The handle 44 is automatically pushed up via 48. Take the above measures Therefore, when traveling on stairs with the tread of the crawler 30 set to 180 ° and 180 ° or less Do not change the height of the handle 44 from the ground when driving on level ground. It will be easier to control.

[0010]

[Effect of device]

  As described above, since the present invention is the one described above, the crawler treading step is required when traveling on level ground. By making the surface 180 ° or less, the front and rear sides of the traveling wheel of the crawler and the wheels It has a wheel structure, which reduces ground resistance and improves maneuverability and steerability. At this time, black Since the front part of the rail is forcibly driven in a high diagonal position forward, when crossing a step, etc. It works like taking in obstacles and improves riding comfort. On the other hand, when running on stairs It is possible to improve the climbability by setting the tread of the crawler to 180 °. The handle will automatically switch to the upper position when the crawler moves. , Without requiring complicated operations (for example, switching the handle up and down each time) Excellent in maneuverability (compared to the case of performing manually).

[Brief description of drawings]

FIG. 1 is a side view of a carrier.

FIG. 2 is a plan view of a carrier.

[Explanation of symbols]

20 running wheels 24 idler wheel 28 drive wheels 30 crawlers 42 wheels 44 handle

Claims (2)

[Scope of utility model registration request] 1. A crawler (3) is provided in front of and behind the traveling wheel (20).
0) is wound around to arrange the idler wheel (24) and the drive wheel (28), and the tread surface of the crawler (30) centering on the running wheel (20) is bent at an angle of 180 ° or less. In the enabled transport vehicle, in front of the running wheels (20),
Further, a crawler structure for a transport vehicle, in which a wheel (42) is provided inside the crawler (30) to be grounded when a tread surface of the crawler (30) is at a predetermined angle of 180 ° or less. 2. A rear handle (44) is configured to be changeable between an upper position and a lower position, and when the tread surface angle of the crawler (30) is changed to 180 °, the handle (44) is interlocked with the handle. 3.) The crawler structure for a carrier according to claim 1, wherein the switch is switched to an upper position.