JPH10100796A - Working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate works on a narrow road by improving the structure of a door plate to serve also as a footboard furnished in the accommodation in the under-part of a storage house so that it is possible to shorten the protruding length of the door plate when the horizontal attitude is established and facilitate getting on and off of even an operator having less tallness while a large road clearance is secured. SOLUTION: At the inlet to the accommodation part 14 furnished in the lateral under-part of a storage house 3, a door plate to serve also as a footboard is provided which can rotate alternately to the upright position to shut the inlet and the horizontal position to tumble outside. In this working vehicle 1, a rotary arm 20 is coupled with the door plate 11, and the pivot 21 of the arm 20 is located in a position which has intruded to inside the vehicle body farther than the inlet to the accommodation part and is corresponding with the lower part of the accommodation part 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work machine such as a rescue work vehicle equipped with a hangar for tools and the like, and more particularly, a foot plate / door provided at a lower portion of a lateral side of the hangar so as to protrude in a lateral direction. It relates to a work vehicle with an improved board.

[0002]

[Prior Art] Dispatched in the event of a disaster such as a major fire or earthquake,
A rescue vehicle for rescuing a victim from a collapsed building or the like has a hangar storing tools at the rear of the cab. The hangar is provided with multiple shelves for storing a large number of tools, and the tools on these shelves can be taken out by pulling up a shutter on the side.

However, among the tools stored in these shelves, tools placed at a high position above cannot be taken out while the worker is standing on the road. Therefore, the door plate of the storage section below the hangar is configured to be able to fall horizontally outward, and the horizontal door plate is used as a tread plate so that an operator can ride on it.

However, in the conventional rescue work vehicle, the mounting structure of the door plate also serving as a tread plate is, as shown in FIG.
The lower end of 1 is connected to the bottom entrance of the storage portion 54 by a hinge 55, and the hinge 55 is rotatable as a pivot, and can be switched between an upright position and a horizontal position by hanging the chain 56. ing. Therefore, when the door plate 51 is set to the horizontal position, the width W protruding in the horizontal direction becomes the same length as the entire length of the door plate 51, which impedes traffic on a narrow road, or in the worst case, the door plate 51. There was a problem that it was not possible to level the camera.

Further, the height from the road surface to the bottom surface of the storage portion 54 is required to be 450 mm or less from the ground according to the law. However, in a general rescue work vehicle, in order to avoid the vehicle being easily damaged by obstacles on the road or the like, the road clearance is set to be 450 mm, which is as large as the specified upper limit. In addition, in order to secure the thickness of the bottom plate of the storage portion 54 to about 40 mm in order not to bend,
The height when the door plate 51 is a horizontal tread becomes 490 mm. However, the height around 490mm for this tread is
For workers with short heights, the height is extremely difficult to get on and off, which may hinder rescue work.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to improve the structure of a tread plate / door plate provided in a storage section below a hangar so that the length of the door plate when it is leveled can be shortened so as to be narrow. An object of the present invention is to provide a work vehicle that facilitates work on a road and that allows a short-height worker to easily get on and off while securing a large road clearance.

[0007]

In order to achieve the above object, the present invention is directed to a storage section entrance provided at a lower portion of a lateral side of a hangar, which is alternately provided with an upright position for closing the storage section entrance and a horizontal position falling outward. In a work vehicle provided with a door plate that can also be used as a tread plate, a pivot arm is connected to the door plate, and a pivot shaft of the pivot arm enters the vehicle body from the entrance of the storage unit. And provided at a position corresponding to a lower portion of the storage section.

In this way, the pivot shaft of the rotating arm connected to the door plate is provided at a position where it enters the vehicle body from the entrance of the storage section and at a position corresponding to a lower portion of the storage section. When the door plate is rotated from the upright position to the horizontal position, a part of the door plate enters the lower side of the storage portion and can be shifted to the inside of the vehicle body. That is, the length of the door plate horizontally protruding laterally outward from the storage unit entrance can be made shorter than the entire length of the door plate, so that it can be used as a tread even on a narrow road and work. .

Further, since the door plate when pivoted to the horizontal position moves to a position lower than the bottom surface of the storage portion, even if the load clearance is increased to a prescribed upper limit of 450 mm as a tread plate, Height from the lower,
It makes it easy for low-height workers to get on and off while ensuring a large road clearance.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings. 1 and 2 show a rescue work vehicle which is dispatched when a disaster occurs as an example of the work vehicle of the present invention. The rescue work vehicle 1 is configured by installing a driver's cab 2 at a front portion and installing a hangar 3 at a rear portion for mounting tools. The hangar 3 is provided with multi-stage shelves 9 inside the left and right side surfaces with openings, and tools 10 are mounted on these shelves 9. In addition, a storage unit 14 in which an opening / closing type shutter 7 is attached to each of the openings, and which is provided on the lower side in front and behind with the rear wheel T interposed therebetween,
Door plates 11 and 13 are respectively attached. Door plate 1
As will be described in detail later with reference to FIGS. 3 and 4, the first and third members 13 are configured to rotate outward to a horizontal falling position around a horizontal pivot provided at the lower end.

The door plates 11, 13 which have fallen to the lying position are also used as treads, and are used when taking out rescue tools 10 mounted on a shelf 9 at a high position. ing. The door plate 12 is also provided at the part facing the rear wheel T.
A pivot shaft is provided at an intermediate portion in the height direction, and is opened and closed between an upright position in FIG. 1 and a horizontal position in FIG. This door plate is dedicated to the step board, and is formed in the concave portion 12a so that the lower end does not interfere with the rear wheel T when the door plate is laid down.

15 is a ladder set on the upper surface of the hangar 3;
16 is a small crane attached to the rear end of the vehicle, 1
Reference numerals 7, 18, and 19 denote handles for opening and closing provided on the surfaces of the door plates 11, 12, and 13, respectively. The opening and closing mechanism of the door plates 11 and 13 described above is as shown in FIGS. Door plate 11,
Since the opening / closing mechanism 13 is the same, the door plate 11 will be described below as a representative.

On the back surface of the door plate 11, a pair of left and right L-shaped rotating arms 20 are attached. One end of the rotating arm 20 is fixed to both sides of the door plate 11 by welding, respectively. The side extends to the inside of the storage section 14 and is rotatably fixed to the lower end of the side wall 14a by a nut 22 with a bolt 21 as a pivot X. When the door plate 11 is pivoted outward around the pivot axis X from an upright position in which the entrance of the storage unit 14 is closed, the pivot amount of the L-shaped pivot arm 20 when the door plate 11 is in a horizontal state. The arm portion from the X to the L-shaped bent portion contacts the bottom surface 14b of the storage portion 14, is held at the horizontal position, and acts as a stopper for preventing further opening.

An urging means 30 for urging the door plate 11 to be always closed is connected between the door plate 11 and the storage portion 14. The urging means 30 is provided with a damper in which a rod 32 is reciprocally mounted on a cylinder body 31 filled with a compressed gas. The rear end of the damper is attached to the rear end of the cylinder main body 31 via a rear end flange 33, and a side wall 14a forming the storage portion 14 by bolts 34 is formed.
, And the tip of the damper is attached to the rotating arm 20 by a bolt 36 via a tip flange 35 attached to the tip of the rod 32. In this attached state, the rod 32 is constantly urged toward the distal end of the rod 32 by the compressed gas.

The urging means 30 in the direction of always closing as described above.
The door plate 11 can be easily closed without requiring a large force when the door plate 11 is closed. Door plate 11 described above
According to the mounting structure of (1), when the door plate 11 is lowered to a horizontal position about the pivot axis X of the rotating arm 20, a part of the door plate 11 is stored in the storage portion as shown by a two-dot chain line in FIG. 14 enters a position below the bottom surface 14b and shifts to the inside of the vehicle body from the storage unit entrance. Therefore, the door plate 11 is configured to be shorter than the conventional structure shown in FIG.

Further, when the door plate 11 is in the horizontal position, it moves to a position lower than the bottom surface of the storage portion, so that even if the load clearance is increased to a prescribed upper limit of 450 mm, compared to the conventional structure shown in FIG. As a result, the height from the road surface is reduced, making it easier for low-height workers to get on and off while securing a large road clearance. In the present invention, the urging means 30 described in the illustrated embodiment is not always necessary, and may be appropriately provided according to the scale of the work vehicle. The urging means 30 is not limited to the damper described above, and may be, for example, a tension spring or the like, as long as the urging means 30 can always be urged in the closing direction in order to easily close the door plate. It may be.

The present invention can be preferably used for the rescue work vehicle described as the embodiment, but is not limited thereto. For example, a civil work vehicle equipped with a civil work tool may be used. Any work vehicle equipped with a door and a door plate also serving as a tread can be suitably used.

[0018]

As described above, according to the present invention, the pivot shaft of the rotary arm connected to the door plate is located at a position where it enters the vehicle body from the entrance of the storage section and corresponds to a lower portion of the storage section. When the door plate is rotated from the upright position to the horizontal position, a part of the door plate can enter the lower side of the storage portion and be shifted to the inside of the vehicle body, whereby the door plate can be stored. Since the length horizontally protruding laterally outward from the entrance can be made shorter than the entire length of the door plate, it can be used as a tread even on a narrow road and work can be performed.

Further, since the door plate when pivoted to the horizontal position moves to a position lower than the bottom surface of the storage portion, even if the load clearance is set to a large upper limit of 450 mm as a tread plate, Height from the lower,
A low height worker can easily get on and off while securing a large road clearance.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a work vehicle according to the present invention.

FIG. 2 is a side view showing a state in which a door plate also serving as a tread plate is opened in FIG.

FIG. 3 is a cross-sectional view of a main part showing an attached state of a door plate also serving as a tread plate.

FIG. 4 is a sectional view taken along the line AA in FIG. 3;

FIG. 5 is a cross-sectional view of a main portion showing a state in which a conventional door plate also serving as a tread plate is attached.

[Description of Signs] 1 Rescue Work Vehicle (Work Work Vehicle) 3 Hangar 9 Shelf 10 Tools 11,13 Door Plate 14 Storage Unit 20 Rotating Arm 21 Bolt (Pivot Shaft) 30 Energizing Means

Claims (3)

[Claims] 1. A storage plate entrance provided at a lower portion of a lateral side portion of a hangar is provided with a door plate also serving as a tread plate which can be alternately rotated between an upright position for closing the storage unit entrance and a horizontal position falling outward. In the work vehicle, a pivot arm is connected to the door plate, and the pivot shaft of the pivot arm is located inside the vehicle body from the entrance of the storage unit and corresponds to a lower portion of the storage unit. Work vehicle set at the location. 2. An L-shaped portion from a connecting portion of the rotating arm to the door plate to the pivot shaft is formed in an L-shape, and an arm portion from the middle bent portion of the L-shape to the pivot shaft is connected to the door plate. The work vehicle according to claim 1, wherein the work tool is configured to abut on a bottom surface of the storage portion when the device is in a horizontal position. 3. An urging means for closing the door plate between the door plate and the storage portion.
The work vehicle described.