JP3035205B2 - Hose car movement control device for work vehicle with loading / unloading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose car movement restricting device provided in a loading stand elevating device for loading or unloading a fire truck equipped with a fire hose truck for fire.

[0002]

2. Description of the Related Art As shown in FIG.
Hose car 03 at the rear of bed 02 of fire truck 01
2, and a loading platform elevating device 04 is provided at the rear end of the loading platform 02, and a movement restricting device 06 that regulates the movement of the hose car 03 is provided on the loading platform 05 of the loading platform elevating device 04. The hose car 03 is prevented from dropping from the receiving table 05 during the ascent and descent. The movement restricting device 06 is moved behind the front wheel 07 and the rear wheel 08 of the hose car 03 to a projecting position for restricting the movement of the wheels 07, 08 and a retreat position for restricting the movement of the wheels 07, 08. And a pair of stoppers 09 that can be
And a lock device 010 provided in front of the device.

When the hose car 03 is dropped from the fire truck 01, the hose car 03 is pulled out onto the loading tray 05, and the stoppers 09 are individually extended behind the front wheels 07 and the rear wheels 08 of the hose car 03, respectively. The movement of 07 and 08 is restricted. Then, after lowering the loading tray 05 to the lowest position, the lock device 010 releases the restriction of each stopper 09 individually, and the hose car 03 is pulled out from the loading tray 05 to the ground.

[0004]

In a fire extinguishing operation that requires a time reduction of the order of seconds, it is very time-consuming because the lock device of the movement restricting device needs to be individually released from the restriction operation. There was a problem.
In view of the above, the present invention provides a hose car movement restricting device in a work vehicle with a loading / unloading pedestal elevating device capable of shortening the time for removing a hose car from a fire engine and enabling an effective fire extinguishing activity.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a work vehicle provided with a loading / unloading device for raising / lowering a loading / unloading rack for loading / unloading a hose car at the rear of the loading platform. A pair of front and rear stoppers movable to a projecting position for restricting the movement of the rear wheel and a retracting position for releasing the restriction are provided, and each of the stoppers is provided with an elastic member capable of urging the stopper in the retracting direction; Between the stoppers, a pair of lock devices capable of holding and releasing each stopper at the extended position are provided close to each other.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 7 shows a rear part of the fire truck 1, in which a four-wheeled hose car 3 is mounted on a carrier 2 of the fire truck 1, and a water discharge hose (not shown) in a wound state. ) Is stored.

At the rear of the loading platform 2, a loading platform lifting device 4 is provided. As shown in FIG. 1, a pair of left and right guide members 6 provided at the rear end of the chassis frame 5, and driving means (appropriate for driving the inside of the guide members 6). The slide member 7 which moves up and down by not shown)
And a load receiving table 8 mounted horizontally below the slide member 7, and by appropriately driving the drive means, the load receiving table 8 is raised by a solid line in FIG. It is designed to move between the lowered position.
When the receiving table 8 is not used, it can be stored upright as shown in FIG.

[0010] A hose car movement restricting device 9 is provided on the receiving table 8. The hose car moving restricting device 9 includes a front stopper device 11 for restricting the rear movement of the front wheel 10 of the hose car 3, and a rear wheel. And a rear stopper device 13 for restricting the rearward movement of the rear stop 12. Double stopper device 1
Since the structures 1 and 13 have substantially the same structure, in this embodiment, the front stopper device 11 will be described.

As shown in FIGS. 2 to 6, a base 14 of a parallel link 17 comprising a pair of left and right first arms 15 and second arms 16 is attached to a bracket 14 provided on the side of the loading table 8 by a pin 18. It is pivotally supported so that it can be raised and lowered. A stopper 19 having an inverted U-shaped cross section is provided at the tip of the parallel link 17.
Are pivotally supported by pins 20. A parallelogram is formed at the pivot points at the base and the front of the parallel link 17, the stopper 19 is always kept horizontal, and the parallel link 17 is turned in the upright direction. When the stopper is moved, the stopper 19 extends to the rear position of the front wheel 10 to restrict the rearward movement of the front wheel 10, and when the parallel link 17 is turned in the falling direction, the stopper 19 receives the cargo from the rear position of the front wheel 10. It retreats to the side of the table and releases the regulation of the front wheels 10. The pin 1
The elastic member 8 is fitted with a spring 21 as an elastic member, and the stopper 19 is constantly urged in the falling and retracting direction. Reference numeral 22 denotes an engagement hole formed in the rear side surface of the stopper 19.

A lock device 23 for holding the stopper 19 at the extended position is provided on the loading table 8 near the stopper 19 and behind the stopper 19, and the lock device 23 includes a lock body 24 and a stopper. 19 engagement holes 22
And a tread plate 26 for releasing the protrusion 19 of the stopper 19. The lock body 24 has an inverted U-shape in vertical section, and an intermediate portion thereof is pivotally supported by a support member 27 fixed to the load receiving table 8 by a support pin 28 so as to be vertically rotatable. A spring 30 is fitted to a core member 29 fixed at a position close to the rear of the support member 27. The upper end of the spring 30 is in contact with the inside of the rear upper surface of the lock body 24 so that the front part of the lock body 24 is always downward. Is being urged.

The engaging member 25 is formed integrally with a front portion of the lock body 24 so as to protrude toward the stopper 19. The engaging member 25 is provided with the engaging hole 22 of the stopper 19.
The stopper 19 is held at the extended position against the force of the spring 21 by pressing the lower surface of the engaging hole 22 downward with the force of the spring 30.

The tread plate 26 is provided at the rear of the upper surface of the lock body 24.
The engagement with the engagement hole 22 is released by rotating the upper part 5 upward. When the engagement is released, the stopper 19 can be automatically moved in the retracting / retreating direction by the force of the spring 21. The locking device 23 of the rear stopper device 13 is provided on the loading table 8 facing the locking device 23 of the front stopper device 11 and at a position near the front of the stopper 19 of the rear stopper device 13. It is close to the tread plate 26 of the front stopper device 11. For this reason, by simultaneously stepping on both tread plates 26, 26, both stoppers 19, 19, which are extended and held, can be simultaneously moved to the retracted position.

In this embodiment, the stopper is moved left and right by the up-and-down rotation of the parallel link. However, the same effect can be obtained even if the stopper can be slid in the left and right direction. Although the treads of both stoppers are provided close to each other, the same operation and effect can be obtained even when the tip of the treads is overlapped and one side is depressed to activate the other stopper.

The operation of the present invention having the above-described structure will now be described. In FIG. 7, the hose car 3 is mounted on the loading platform 2, the loading platform 8 is stored upright at the rear of the loading platform 2, and the front and rear stopper devices 11, 13 are both in the extended position. Hose car 3 from this state
When lowering to the ground, first, the loading tray 8 in the standing storage state
Is lowered to the rear of the loading platform 2 to be in a horizontal state. Next, the stopper 19 of the front stopper device 11 is once moved to the retreat position, so that the entire hose car 3 can be moved onto the loading tray 8 as shown in FIG.

The movement of the stopper 19 to the retracted position is as follows.
First, the tread plate 2 on the side of the front stopper device 11 shown by a solid line in FIG.
Step 6 to the state indicated by the dashed line. Then spring 3
The engagement member 25 that has pressed the lower surface of the engagement hole 22 downward with a force of 0 rotates upward about the support pin 28, and the engagement between the engagement member 25 and the engagement hole 22 is released. As a result, the parallel link 17 held upright falls down outward by the force of the spring 21 until the lower surface of the stopper 19 abuts on the load receiving table 8, and the stopper 19 is moved to the retracted position beside the load receiving table 8 as shown in FIG. Moving. Thereafter, when the step on the tread plate 26 is released, the front portion of the lock body 24 pivots downward by the force of the spring 30, and the leading end of the engaging member 25 contacts the upper surface of the stopper 19 at the retracted position as shown in FIG. State.

Next, the hose car 3 on the loading platform 2 is moved to the loading platform 8, and the rear wheels 12 are moved to a position regulated by the rear stopper device 13.
The movement of the front wheel 10 is thereby restricted. Front wheel 10
In the movement restriction, first, the stopper 19 at the retracted position as shown in FIG. Then, the parallel link 17 rises inward against the force of the spring 21, and the engagement member 25 at the lowest position in FIG. 3 is pushed up by the upper surface of the stopper 19 and gradually starts rotating upward. When the stopper 19 is pressed to the extended position behind the front wheel 10 as shown in FIG. 5, the engaging member 25 is engaged with the engaging hole 22 and the stopper 19 is held at the extended position.

As a result, the movement of both wheels 10 and 12 is restricted, and it is possible to prevent the hose car 3 from dropping from the loading tray 8. After restricting the movement of both wheels 10 and 12 of the horse car 3, the loading tray 8 is lowered to the ground by the loading tray lifting device 4 as shown by the one-dot chain line in FIG. After the loading tray 8 has descended the most, the two tread plates 26, 26 are simultaneously stepped down against the force of the spring 30 to the state shown by the dashed line. At this time, since both treads 26, 26 are provided close to each other, the operator can simultaneously step on both treads 26, 26 with one foot.

Then, the engagement members 25 of the lock bodies 24, 24 rotate upward about the support pins 28 to release the engagement with the engagement holes 22, and the parallel link 17 is moved by the force of the spring 21. The stoppers 19, 19 fall outward and move from the extended position (FIG. 5) to the retracted position (FIG. 6).
As a result, the movement restriction of both wheels 10 and 12 is released, and the hose car 3 can be lowered from the loading tray 8 to the ground.

The loading of the hose car 3 from the ground onto the carrier 2 is performed in the reverse order to that described above.

[0020]

As described above, according to the present invention, since both lock devices of each stopper are arranged between the front and rear stopper devices for restricting the movement of the hose car and both lock devices are provided close to each other, the both lock devices are depressed with one foot or the like. By attaching it, both stoppers can be released at the same time, which significantly reduces the time required for the hose car to be lowered and enables effective fire fighting.

[Brief description of the drawings]

FIG. 1 is a rear side view of a working vehicle provided with a hose car movement restricting device of the present invention.

FIG. 2 is an enlarged side view showing a movement restriction state of the hose car movement restriction device.

FIG. 3 is an enlarged side view showing a restriction release state of the hose car movement restriction device.

FIG. 4 is an AA diagram of FIG. 2;

FIG. 5 is an enlarged sectional view taken along line BB of FIG. 2;

FIG. 6 is an enlarged cross-sectional view taken along the line CC of FIG. 3;

FIG. 7 is a side view of the working vehicle during transportation of the hose car.

FIG. 8 is a use state diagram of a work vehicle showing a loading / unloading operation of a hose car.

FIG. 9 is a side view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fire truck (working vehicle) 2 Loading platform 3 Hose car 4 Loading platform lifting device 8 Loading platform 9 Hose car movement restricting device 19 Stopper 21 Spring (elastic member) 23 Lock device

Claims (1)

(57) [Claims] 1. A work vehicle provided with a loading tray lifting device for raising and lowering a loading tray for loading and unloading a hose car at a rear portion of a loading truck.
A pair of front and rear stoppers are provided on the loading tray, which are movable to a projecting position for restricting the movement of the front wheel and the rear wheel of the hose car and a retracting position for releasing the restriction, respectively. An elastic member capable of being biased in a direction is provided, and a pair of locking devices capable of holding and releasing the respective stoppers at the extended position are provided between the two stoppers in close proximity to each other. Hose car movement control device for work vehicles