JPS62265073A - Four-wheel dolly - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a four-wheeled transport vehicle that is driven by a driver while holding a bar handle.

(Prior Art) An example of this type of four-wheeled transport vehicle is a hose transport vehicle used for extinguishing fires at the scene of a fire. This hose carrier is loaded onto a fire engine, transported to the scene of a fire, and unloaded from the fire engine at the scene of the fire.

Then, there is one in which a firefighter pulls a bar handle to accompany a hose carrier and unloads 17 piles of hoses into a container.

(Problems to be Solved by the Invention) By the way, four-wheeled transport vehicles, such as hose transport vehicles, which are transported within the city and used at the destination, are designed to maximize the space on the loading platform, while at the same time occupying the entire transport area. It has been designed to be compact.

For example, the steering shaft supported by the vehicle body tends to be provided depending on the height of the cargo platform, and the length of the bar handle also tends to be formed to match the width of the cargo platform.

Therefore, when a firefighter follows while holding the bar handle, the firefighter's escort position will be near the steering wheel,
For example, if the steering wheel turns when operating the steering wheel, it may get in the way of accompanying vehicles.

This invention has been made in view of the above, and has a simple structure in which the steering shaft is tilted forward, and a driver's companion position is secured at a distant position in front of the steering wheels, making it easier to accompany the driver. The purpose is to provide a four-wheeled carrier.

(-L Stage for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a bar bundle on the steering shaft provided on the vehicle body, and the driver holds this bar handle to accompany the driver while driving. The four-wheeled transport vehicle is characterized in that the steering shaft is supported so as to be tiltable toward the front in the traveling direction of the heavy vehicle.

(Function) In the present invention, when the driver holds the bar handle of the four-wheeled transport vehicle and travels with the vehicle, the steering shaft to which the bar bundle is attached is tilted forward in the direction of travel of the vehicle.

This steering shaft is relatively long, so
By changing the angle of the steering shaft, when the driver holds the steering wheel and follows the vehicle, the position of the companion is at a distance in front of the steered wheels, making it easy to avoid the steering wheel from interfering with the following. be done.

(Embodiment) An embodiment of the present invention will now be described in detail based on the accompanying drawings.

In the figure, the reference numeral 1 indicates a self-propelled four-wheeled vehicle, and in this embodiment, it indicates a hose carrier to be transported on a fire engine 2.

The loading platform 3 for this hose transport charge is open at the top and rear,
A hose (not shown) is folded and loaded on the loading platform 3.

A motor 4 as a drive device is provided at the upper front side of the loading platform 3, and this driving force is transmitted to a driving wheel 6 via a power transmission device 5, and the driving wheel 6 is rotated by an axle 7 supported by the loading platform 3. possible.

The steering wheel 8 is rotatably supported by a front frame 10 provided at the front ends of a pair of slide rails 9 via a suspension device 11, and the steering wheel 8 turns left and right by operating a tie rod 12.

The slide rail 9 is movably supported by a rear guide section 13 provided at the center of the loading platform 3 and a front guide section 14 provided at the front side of the loading platform 3.

A rear locking pawl 15 is fixed to the rear end of the slide rail 9, and a pawl 16 is also fixed to the front body 1 of the front frame 10 that supports the steering wheel 8. The rear locking pawl 15 is fixed by a vertically movable stopper 17 provided on the front side of the loading platform 3 while the steering wheel 8 is moved to the front side.
When the steering wheel 8 is moved rearward, the front locking pawl 16 is fixed. This stopper 17 moves 1-down in conjunction with when the rotating shaft 18 supported by the loading platform 3 rotates one of the fixed levers 19 in the L downward movement. The fixed lever 19 is located at a high position so that it can be easily operated.

A post 20 is rotatably provided in the center of the front frame 10, and the post 20 is connected to the tie rod 12 via a connecting lever 21. this boss 2
0 has a relatively long steering shaft 2 that is approximately the same height as the loading platform 3.
2 is supported in the vertical direction. That is, a support shaft 23 fixed to the lower end of the steering shaft 22 is rotatably supported by a support bolt 24 supported by the post 20. A lock member 25 is provided at the lower end of the steering shaft 22.
is slidably provided, and the upper part of the locking member 25 and the flange part of the steering shaft 22 are connected to each other.
The locking member 25 is always urged upward. Lock member 25
There is a guide groove 2 extending in the axial direction from the lower end to approximately the center.
7 is formed. This guide groove 27 is
5 is restricted from moving downward, but is allowed to move upward.

A lock hole 28 through which a lock member 25 passes diagonally from the front to the rear of the post 20 is formed, and an axial guide groove 29 is formed in this front lock hole 28.

The support shaft 23 of the steering shaft 22 has a center portion formed to have the same width as the guide groove 29 of the post 20, and the lock member 2
5 in one direction, the support shaft 23 comes to be guided by the guide groove 29. As a result, the steering shaft 22 is tilted forward, and in this position, the lock member 25 is inserted into the lock hole 2.
8, it will be locked.

A bracket 30 is fixed to the upper part of the steering shaft 22, and a bar handle 33 is inserted between a lower block 31 and an upper block 32 provided on the bracket 30. The lower block 31 and the upper block 32 are positioned on the bracket 30 with support pins 34 and fixed with bolts 36 and adjustment handles 37 via a cover 35.

These constitute the locking mechanism 38 of the bar handle 33.

The bar handle 33 extends in the vehicle width direction, and its grip portion 3
The grip portion 39 is bent on the inside of the grip portion 9 and is located on the front side. The bar handle 33 can be moved in the vehicle width direction by loosening the adjustment handle 37, and can be rotated to adjust the height and longitudinal positions of the grip portion 39.

The grip portion 39 is provided with a brake lever 40 and a motor control lever 41, and wires 42 and 43 respectively have flexure to allow the bar handle 33 to move in the axle direction.

A brake lever 44 is provided on the steering shaft 22,
When the vehicle runs over a curb or the like, the steering shaft 22 may be held and moved, and in this case, the brake operation is made easy.

Next, the operation of this embodiment will be explained.

When transporting this hose truck with fire department [112],
Slide the slide rail 9 backward and lock the front locking claw 1.
6 is engaged with a stopper 17, and the steering wheel 8 is moved in the direction of the driving wheel 9. In this state, the steering shaft 22
is supported in the vertical direction along the front side of the loading platform 2, and the bar handle 33 is also supported in the center or on the steering shaft 22, making it compact. Therefore, when mounted on a vehicle, the steering shaft 22, bar handle 33, etc. do not take up space.

When steering the hose carrier, when one of the fixed levers 19 is operated to remove the stopper 17 from the front locking claw 16, the slide rail 9 is unlocked. As a result, the slide rail 9 is pulled out from the loading platform 2, and the rear locking claw 15 is locked with the stopper 17.

Then, the firefighter holds the bar handle 33 while driving the motor 4 to make the hose transport vehicle self-propelled while accompanying the firefighter.

When this firefighter runs while operating the bar handle 33, since the firefighter has four wheels, he runs close to the steering wheels 8, which may interfere with his escort when turning or the like.

In such a case, lift the locking member 25 at the lower end of the steering shaft 22 upward to release the lock, tilt the steering shaft 22 forward, and insert the locking member 25 diagonally into the post 20 to lock it. do. This results in
Since the bar handle 22 is tilted forward and the position of the grip portion 39 is moved forward and separated, it is avoided that it becomes a hindrance when the firefighter follows. This steering shaft 2
Since wheel 2 is relatively long, it is possible to provide a wide distance between the escort position and the steering wheel 8 with a simple structure of tilting it forward.

Furthermore, loosen the adjustment handle 37 and adjust the bar handle 33.
If the driver protrudes to one side and follows the driver while holding the grip portion 39 on this protruding side, the escort position for firefighting will be further away from the steering wheel 8, making it easier to follow the driver.

Furthermore, when the hose carrier goes over a curb or step, the steering wheel 8 is moved over the curb or step by holding the bar handle 33 or the steering shaft 22. At that time, the steering link shaft 22 is moved forward. By tilting and fixing,
The lever ratio increases when the vehicle is in the forward position, allowing it to easily climb over curbs, steps, etc. with a small amount of force.

In addition, although this example was explained about a hose transport vehicle,
The same applies to other four-wheel vehicles.

Furthermore, the four-wheeled transport vehicle does not have to be self-propelled, but may be one that can be pulled and guided. Further, the steering shaft 22 does not need to be locked when tilted toward the vehicle traveling direction 111.

(Effects of the Invention) As described in Section 111, this invention makes it possible to tilt the steering shaft provided on the vehicle body of the four-wheeled transport vehicle forward in the direction of travel of the vehicle, so that the steering link shaft is relatively vertically tilted. It is long in shape and has a simple structure that changes its angle, so that the driver's escort position is placed in a position farther forward from the steering wheels, making it easier to avoid the steering wheels getting in the way of the driver's escort. .

[Brief explanation of drawings]

Figure 1 is a side view of a self-propelled four-wheeled transporter, Figure 2 is a plan view,
Fig. 3 is a front view, Fig. 4 is a sectional view of the support part of the steering shaft, Fig. 5 is a sectional view taken along the line V-V in Fig. 4, Fig. 6 is a front view of the post of the steering shaft, and Fig. 7 is a sectional view of the support part of the steering shaft. FIG. 3 is a cross-sectional view of the locking mechanism of the bar handle. 1... Self-propelled four-wheeled vehicle 3... Loading platform 15... Post 17... Steering shaft 23... Support shaft 20... Lock member 22... Bar handle 37... Adjustment handle Procedural amendment October 3, 1985 1 Indication of the case Patent Application No. 009741 of 1989 2 Name of the invention Four-wheeled transport vehicle 3 Relationship with the person making the amendment Patent applicant address 2500 Shingai, Iwata City, Shizuoka Prefecture Name (AO7) Yamaha Motor Co., Ltd. 4 Agent 〒1
51 Address 2-23-1 Yoyogi, Shibuya-ku, Tokyo (1) Page 7 of the specification, lines 16 and 17 [Wire 42]
, 43J are corrected as ``each wire 42.43J.'' (2) ``Drive wheel 9'' on page 8, line 8 of the same book is changed to [drive wheel 6]
I am corrected. (3) "Cargo platform 2" on page 8, line 9 of the same book is corrected to "cargo platform 3." (4) "Cargo platform 2" on page 8, line 19 of the same book is corrected to "cargo platform 3." (5) "Comparatively long" on page 9, line 16 of the same book is corrected to "relatively long." (6) Correct the attached drawing Middle East Figure 6 and the attached sheet. Written amendment to the above procedures (method) 1 Indication of the case Patent Application No. 009741 of 1985 2 Title of the invention Four-wheeled transport vehicle 3 Relationship with the case of the person making the amendment Patent applicant address 2500 Shingai, Iwata City, Shizuoka Prefecture Name ( AO7) Yamaha Motor Co., Ltd. 4 Agent 〒1
51 Address 2-1123-1-6 Yoyogi, Shibuya-ku, Tokyo Subject of amendment In content (6) of the procedural amendment amendment submitted on October 3, 1985, "Figure 6" is corrected to "Figure 2" . that's all

Claims (1)

[Claims] A four-wheeled transport vehicle in which a steering shaft provided on the vehicle body is provided with a bar handle, and a driver holds the bar handle to accompany the four-wheel transport vehicle, in which the steering shaft is supported so as to be tiltable toward the front in the direction of travel of the vehicle. Transport vehicle.