JPH01148672A - Traveling device for vehicle - Google Patents

Abstract

PURPOSE:To favorably carry out both ordinary traveling and an uneven ground traveling by providing vertically operable rotary wheels on a vehicle body while providing crawlers on the lower portion of the vehicle body and enabling the rotary wheels and crawlers to be separately driven and operated. CONSTITUTION:When a vertically moving shaft 11 and a swing arm 15 are lowered by extending hydraulic cylinders 13, 16 with appropriate driving means, rotary wheels 2a, 2b come to the solid line positions being brought into contact with the ground in a condition of projecting out to the downside of crawlers 3. In this condition, when an engine 21 is driven, the turning force is transmitted to the wheels 2b via a power switchover device 22, a differential device 23a, and a chain 25a resulting in wheel traveling. On the other hand, when the hydraulic cylinders 13, 16 are contracted, the wheels 2a, 2b are placed in the dotted line positions and the crawlers 3 are brought into contact with the ground. In this condition, the turning force of the engine 21 is transmitted to the crawlers 3 via the power switchover device 22, a differential device 23b, and a chain 25b resulting in crawler traveling.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicle running device that is applied to normal running on roads and the like as well as running on rough terrain.

(Prior Art) Conventionally, in various types of vehicles, wheel (tire) devices have been used for normal driving on roads, etc., and crawler devices have been used for driving on rough terrain, etc.; Although the driving range has been expanded due to improved tire functions such as snow tires and low-pressure tires, there are still many areas that cannot be covered without crawler equipment, and it is possible for one vehicle to perform both normal driving and driving on rough terrain. It is extremely difficult to achieve both high running performance in this field, and as a countermeasure to this problem, various types of running devices equipped with both wheels and crawlers have been developed and proposed.

A conventional example of the traveling device equipped with wheels and crawlers is (
I), A type in which crawlers are attached to the outside of the front and rear wheels, and wheel running and crawler running are possible by attaching and detaching the crawlers. (II), A type in which crawlers are attached to the front and rear wheels, and the wheels and crawlers are attached by removing the wheel base and attaching the crawlers. type that enables wheel running and crawler running by attaching and detaching the +I[II, type that has a crawler that can be raised and lowered along with the wheels and can switch between wheel running and crawler running by raising and lowering the crawler (for example, a special type) Publication No. 1982-20237, Publication No. 104316/1982, Japanese Patent Publication No. 1105/1982
Publication No. 77), (IVY, a type in which a crawler is installed along with the wheels slightly above the wheel ground contact area to enable vehicle travel and crawler travel depending on the condition of the running ground (for example, Japanese Utility Model Application Publication No. 185683/1983). and so on.

(Problems to be Solved by the Invention) In the above-mentioned conventional traveling device, in the above-mentioned type (Ill), it is extremely troublesome to attach and detach the crawler to the outside of the front and rear wheels, or to attach and detach the wheel and the claw 2. The operating efficiency of the vehicle is significantly reduced.

In the above type (IIll), the crawler is placed between the front and rear wheels, so the ground contact area of the crawler cannot be secured sufficiently. It is necessary to lift the vehicle, which raises the center of gravity of the vehicle during crawler travel and significantly reduces running stability.

The above-mentioned type bond) has a crawler installed slightly above the ground contact part of the wheels, so the minimum ground clearance when the wheels are running is small, and when passing over obstacles on the ground side when the wheels are running,
The crawler becomes a hindrance to the passage of the obstacles, and the running performance of the wheels is significantly reduced and limited, and the crawler also cannot provide sufficient running performance.

The above-mentioned conventional types have problems such as requiring extremely troublesome work for attaching, detaching and replacing, or not being able to sufficiently achieve both wheel running performance and crawler running performance.

(Means for Solving Problems) The present invention is a vehicle traveling device developed to solve the above-mentioned problems, in which rotary wheels are provided on the vehicle body and are operated to move up and down via an elevating device. A crawler is attached to the lower part of the vehicle body, and a drive operation device is provided for individually driving the rotating wheel and the crawler,
1+, - The above configuration is characterized by a configuration in which the rotary wheels are moved up and down by the lifting device, and the rotary wheels are moved up and down, and the driving operation is performed. By driving and steering the rotating wheels by the device, the wheel running performance is fully demonstrated, and by the raised arrangement of the rotating wheels and the drive and steering of the crawler by the drive operation device, the crawler running performance is fully demonstrated, It makes it easy to switch between wheel running and crawler running at any time, significantly improving running performance and operational reliability.

Further, by providing a sled with a lifting/detachable device, the running ability under adverse conditions is further improved, and by attaching and detaching the sled and moving it up and down, switching between wheel running and only crawler running is facilitated.

(Function) The elevating device lowers the rotary wheel, the drive operating device drives and steers the rotary wheel to enable wheel running, the elevating device raises the rotating wheel to the inactive position, and the drive operating device moves the crawler. It is driven, steered, and switched to crawler running, and the rotating wheels are arranged to move up and down.
Wheel running and crawler running are not particularly hindered, and both drive performance is fully exhibited, and the switching is easily performed at any time, resulting in excellent running performance and operational reliability corresponding to ground conditions.

In addition, by mounting the sled, moving the sled up and down using the lifting/detaching device, and attaching/detaching the sled, the sled running performance can be combined with the wheel running or the crawler running at any time, and smooth running can be achieved even under adverse conditions. Ru.

(Embodiment) Figures 1 and 2 show a first embodiment of the present invention, in which (1) is a vehicle body, (2a) (21)) are front and rear, left and right rotating wheels, and (3) is a crawler. A rotary wheel (2a) that is operated to move up and down on the vehicle body (1) via a lifting device Ql'.
(2b) and a claw 9 at the bottom of the vehicle body (1).
(3) The vehicle running device is equipped with a Y-mounted vehicle and is provided with a drive operating device for driving the rotary wheels <2a) (2b) and the crawler (3) individually.

The lifting device aO! To explain in detail, a rotary wheel (2a) Y is attached to the tip and a sleeve (Il) is attached to the front part of the vehicle body (11).
a) a vertically moving shaft αυ (11) which also serves as a steering wheel and is rotatably supported while vertically sliding, and a sleeve (Ila) on the top of the vertically moving shirt (11) Qυ;
Hydraulic cylinders α4α3 are connected to the upper part of the vertical movement shaft aυaυ through knuckle arms a and Z and are mounted on the car body (1). (13a) (13a), vertical movement shaft 7) (steering handle α4 connected to the top of 1υ via a knuckle arm etc.), and a rotating wheel (
2b) '2 installed on the car body (11) consists of a swing arm α9 pivotally attached to the lower side of the swing arm (151) and a hydraulic cylinder αeαe etc. attached to the car body (11), By expanding and contracting the cylinder α4α, the arm and sleeve (Ila) move the shaft for vertical movement ←υaυ up and down, and the rotating wheel <2a)'l
Move the hydraulic cylinder aeα up and down to (2'a).
By expanding and contracting the swing arm (15α9), the rotary wheels (2'b) v (2'b) are vertically moved by the expansion and contraction of the swing arm (15α9), and each hydraulic cylinder is synchronously operated by an appropriate drive control means, and each rotary wheel (2a ) (2b) is moved downward to the solid line position in Fig. 1 and placed, each rotating wheel is aligned with the vehicle body
However, when the wheels are placed in a normal running arrangement and moved upward to the dotted line position, each rotating wheel is moved upward greatly above the crawler (3) and becomes inactive, and the crawler (
3) It has a suspension mechanism that allows it to run. In addition, the hydraulic cylinder (i3
a), shirt for vertical movement via knuckle arm a3, etc.)
(llll(lLa-Rotate and turn the wheel (2a) (2a)
'! 'Steering.

To explain the drive operation device fR■ in detail, the vehicle body (11
The output shaft, the power switch (2), the differential (23a) (231)) connected to the engine gear mounted on the engine shifter (23a), the power switch (2), and the power shaft (231)), and the differential gear (23a) A chain wheel (25a) (25a) connected to the output shaft (24&) of the rotary wheel (21) (2b) through a sprocket and a differential gear (251)) (25b) etc. which are connected to the output shaft (24b) of (231)) via a sprocket and interlockingly connected to the support shaft (26t)) of the crawler (3) via a sprocket etc. consisting of the crawler (
3) is suspended on front and rear support shafts (26b) (26a) over almost the entire lower part of the vehicle body (υ), and the engine system 1
), output shaft, power switch @, power shaft, differential (
23a), output shaft (24a), Cheno (25a) (25
a) The rotary wheel (2b) is rotationally driven through V, and the rotary wheel (2aX2aX2bX2b) is operated to run the wheel, and the differential (23b) and the output shaft (2b)
41)), Cheno (251)) (25b), Support shaft (
The crawler (3) 13) is rotationally driven via the crawler (31(3)), and the crawler (31(3)) is operated for crawler travel. Crawler (3) by brake @ (c)
The van 3 is drive-controlled and steered.

The first embodiment of the present invention has the above-mentioned structure, and its operation will be described in detail. Each hydraulic cylinder α:lα8 is extended by an appropriate driving means, and an arm, a sleeve (ll
a) , the shaft for vertical movement αnυ, and the swing arm (Isasv) When lowered, each rotating wheel (2a) (
, Zb) are arranged as shown in the solid line in Fig. 1, and each rotating wheel has a height similar to that of a normal vehicle below the vehicle body (IJ) and protrudes appropriately below the crawler (3). Due to the location, the engine Qυ movement power switch (a)
, differential gear 23a), output shaft (24a), chino (25a)
) <25&) When the rotational force is transmitted to the rotary wheels (2b) (2b) via the Y and driven to rotate, the wheels run in the same way as a normal vehicle, and the steering wheel I controls the °C hydraulic cylinder (13a) (
13L)'? Telescopic knuckle arm C121aa
The vertical movement shaft αυ←υ is rotated through the rotary wheels (2a), (2a)'(l'), and the wheels run smoothly.

When each hydraulic cylinder α■e is shortened, each vertical movement shaft aυ and each swing arm α9 are raised, and each rotary wheel (2a) (Cab) is moved upward to the dotted line arrangement shown in FIG. power), differential (231), output shaft (24b), and Cheno (25t).
)) (25t+), the support shaft (26b) 48I: transmits information to drive the crawler +3) (3), resulting in crawler travel. In addition, disc brakes @ with steering handle α4, etc.
By the switching operation (c), the crawlers (3) (31) can be individually driven, and the crawler travel can be steered.

Fig. 3.4 shows the embodiment, and compared to the first embodiment, the claw 2 (3a) attached to the lower part of the vehicle body +11
The attachment/detachment device (3a) is characterized by the roller support material C3.
]) 1 by multiple rollers C321 provided on C3+1
Pair glue.

- La (3 &) (3a) movably supported and K,
Roller support member C31) A crawler mounting bracket protruding from the center of C1l+ can 03 car body (1) A plurality of (1) removably attached to the bracket G on the lower side by Holt (Incorporated) etc., roller support member 0υ01 ) on the claw 2 support shaft, and the sprocket 7 on the claw 2 support shaft (106).
(251)) (25t)) The other configuration is the same as that of the first embodiment, and the vertical movement of each rotary wheel <2&) (2b) by the lifting device α The operation performance, the drive performance when running the wheels using the drive operating device (A), the drive performance when running on the crawler, the wheel running performance, and the crawler running performance are the same, and the crawler (3a) (3a) If the crawler mechanism is not to be used for a long period of time, the crawler mechanism can be easily removed using bolts, etc., and the wheel running can be done in the same way as a normal vehicle.
b) (2513) If the crawler mechanism is easily attached to the lower part of the vehicle body (1) using bolts, etc.,
Crawler running is also possible.

A second embodiment of the present invention is shown in FIGS. 5 and 6, and compared to the embodiment shown in FIG. 3.4, the vehicle body (1)
The sled (41) (4m) has a structure in which a sled IJ (41) (4υ) is provided at the front lower part of the The upper end of the vertically moving shaft 0) is vertically movably and rotatably supported by a sleeve (42a), and a hydraulic cylinder (44) mounted on the vehicle body (1) moves the sleeve ( 42a) The sled (41)H is operated to move up and down along with the vertical movement shaft θ through the steering wheel Q4), and the vertical movement shaft (41)
42 and the sled 17 (4110B) can be rotated and steered, and the sled etc. can be attached and detached by appropriate means, and the sled (4 sled υ) is attached to the lower part of the car body (1) as described above. It is configured to be moved up and down and attached/detached via an elevating/detaching/detaching device.

In addition, the other configurations are the same as those of the embodiment described above, and the same effects can be obtained. By using the arm @ the sleeve (42a) and the shirt l for vertical movement, it is possible to move the sled (41) (4υ steering is also possible, and the sled is also possible by lowering 40 and further steering). By using it in combination with wheel running under conditions such as snow, sand, and muddy ground, or in combination with Claw-2 running, IP
! jK Driving performance under adverse conditions is greatly improved. Also,
If sledding is not required for a long period of time, it can be removed so that it does not interfere with wheel running or claw 2 running.

(Effects of the Invention) The present invention has the above-described configuration, in which the rotating wheel is lowered by the lifting device, and the rotating wheel is rotationally driven and steered by the drive operation device to raise the wheel similar to that of a normal vehicle. The wheel running does not cause any particular rise in the center of gravity of the vehicle, and its running performance is fully demonstrated.The lifting device moves the rotary wheels upwards and places them inactive, and the drive operating device drives the crawler to rotate. can run on a crawler,
The crawler running is not hindered by the rotating wheels, and the running performance is fully exhibited without raising the center of gravity of the vehicle, and the wheel running and the crawler running can be carried out at any time according to the ground side conditions. , easy switching, versatility in driving, and ease of operation significantly improve driving performance and operational reliability.

Furthermore, the running performance of the sled, which is attached to the lower part of the vehicle body via a lifting/detaching device, significantly improves running performance under adverse conditions. This is possible, and does not particularly impede wheel running or crawler performance, and further improves running performance and operational reliability.

Although the embodiments of the present invention have been described above, the present invention is of course not limited to these embodiments, and may be modified in various ways without departing from the spirit of the present invention. It is.

[Brief explanation of the drawing]

Fig. 1 is a side view of the mechanism showing the first embodiment of the present invention, Fig. 2 is a plan view of the mechanism of Fig. 1, Fig. 3 is a side view of the mechanism showing the embodiment, and Fig. 4 is the third 5 is a side view of the mechanism showing the second embodiment, and FIG. 6 is a plan view of the mechanism of FIG. 5. 1: Vehicle body 2a, 2'b: Rotating wheels 3.3
a: Crawler lO: Elevating device 20: Drive operation device 41: Sled 42,...44: Elevating/detaching device

Claims (3)

[Claims] (1) The vehicle body is provided with rotary wheels that are operated to move up and down via an elevating device, and a crawler is attached to the lower part of the vehicle body, and a drive operation device is provided that separately drives and operates the rotary wheels and the crawler. A vehicle running device characterized by: (2) The vehicle body is provided with rotary wheels that are operated to move up and down via a lifting device, and a crawler is attached to the lower part of the vehicle body to be attached and detached via an attachment and detachment device. The vehicle running device described. (3) A vehicle body is provided with a rotary wheel that is operated to move up and down via an elevating device, a crawler is attached to the lower part of the vehicle body, and a drive operation device that individually drives and operates the rotary wheel and the crawler is provided, and the A vehicle running device characterized by having a sled attached to the lower part of the vehicle body that can be moved up and down and attached/detached via a lifting/detaching device.