JPH035169Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a push-up arm that intersects in an X shape between a pedestal and a base, is pivoted at the crossing point, and pivots one end to the pedestal or base. , an X-shaped parallel expansion/contraction mechanism is provided, the other end of which is slidably attached along the base or pedestal, and the push-up arm pivot side of the base and the portion above the intersection point of one push-up arm are connected to the cylinder. Regarding a transport vehicle with a device for pushing up a pedestal connected by a mechanism, its purpose is to provide an inclination to the pedestal with a simple and rational configuration so that the pedestal can be used as a workbench. be. Here, the term "connected by the cylinder mechanism" is not necessarily limited to those that are connected to the cylinder mechanism, but also includes those that are in an abutting relationship as long as the connection relationship with the cylinder mechanism can be maintained.

The above-mentioned transport vehicle with a platform lifting device is very convenient for moving cargo regardless of the location and height of the cargo, but it is also very convenient for moving cargo (parts) at the destination. If it were possible to tilt the pedestal and use it as a workbench without taking it down, the value of use would further increase, making it a valuable asset in assembly plants and the like. That is, in an assembly factory, parts are transferred one by one from a pedestal to a workbench, but if this transfer work could be omitted, the work could be carried out efficiently and conveniently. However, the pedestal in a conventional transport vehicle can only be raised and lowered in a horizontal state, so when used as a workbench, for example, when there are few parts left and there are no parts left in front of you, you can scrape them up one by one. In order to use it as a workbench, a tiltable pedestal is required.

Conventionally, there is a vehicle equipped with a push-up device whose pedestal can be tilted, such as the one described in Japanese Patent Application Laid-Open No. 109396/1983, but this vehicle has an auxiliary arm linked to the upper end of one push-up arm. and thereby push up one end of the pedestal, the relationship between the height and inclination angle of the pedestal is limited by the link mechanism, and it merely tilts the pedestal and raises one end of the pedestal. Therefore, it is not possible to provide the desired inclination angle.

Therefore, the present invention provides a carrier that can tilt the pedestal at a desired height and at a desired angle.The structure of the vehicle is such that one push-up arm is moved upwardly or downwardly with the intersection point as a fulcrum. A plurality of locking pieces are provided along the longitudinal direction at predetermined intervals below the intersection point of the push-up arm, and above the intersection point of the other push-up arm. A fixing mechanism is provided at the part, the tip of which hangs down from a locking pawl that is removable from the locking piece.

Next, an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a carrier with a pedestal lifting device according to the present invention, which includes a base 1 with a U-shaped plane, and two horizontally long plates 2a, 2a extending above the base 1. A pair of push-up arms 3, 3' are arranged in parallel to form a fork-like pedestal, and a pair of push-up arms 3, 3' are intersected in an X-shape and pivotally supported rotatably at the intersection point P. A parallel expansion and contraction mechanism is provided. And push up arm 3
The upper end and the lower end of the push-up arm 3' are connected to a pedestal 2, respectively.
and the base 1, and the other ends of the push-up arms 3, 3' are slidable along the side frame of the base 1 and the lower surface of the pedestal 2 via rollers, respectively. Furthermore, the tip of the piston rod 4a of the hydraulic cylinder 4, which is a cylinder mechanism whose base end is pivoted to the pivoting side of the push-up arm 3' of the base 1, is brought into contact with the lower side above the intersection point P of the push-up arm 3. The arm 3 and the base are connected by installing stoppers 5, 5 on the upper and lower sides of the lower side of the push-up arm 3 at the corresponding contact portion. In the drawings, 6 indicates the hydraulic cylinder 4.
A hydraulic pump 6a that supplies hydraulic pressure to the hydraulic pump 6 is an operating rod of the hydraulic pump 6. The above is the basic structure common to the conventional transport vehicle with a pedestal push-up device. In addition to these basic structures, the transport vehicle with a pedestal lifting device of the present invention has the following features:
The push-up arm 3 can be bent into a square shape with the intersection point P as a fulcrum, and the upper part of the intersection point P of the push-up arm 3' and the lower part of the intersection point P of the push-up arm 3 are engaged by a locking pawl 7. It is formed to be permanently fixed. Since both sides have the same mechanism, only one will be explained. The push-up arm 3 is a cross-sectional shaped steel 3
a and a shaped steel 3b, which has the same cross-sectional shape and can be fitted closely into the recess of the shaped steel 3a, with their open sides facing each other at their ends, fit the shaped steel 3b into the shaped steel 3a, and lock the shaft at the fitted portion. By doing so, it is formed so that it can be bent only in the U-shaped direction. Further, the locking pawl 7 is suspended from above the cross fulcrum P of the push-up arm 3',
On the other hand, in the concave groove below the intersection point P of the push-up arm 3, locking pieces 8, 8, . It is adapted to be locked to a locking piece 8. The locking operation can be performed via a lock release lever 9.
has a U-shape, and coupling plates 10 are attached to both ends thereof as shown in the second figure. The connecting plate 1
0 is provided at the intersection point P of the push-up arm 3 so as to be slidable in the longitudinal direction of the push-up arm 3 via a long hole 10a. Further, a push-up plate 11 rotatable about the intersection point P is also provided at the intersection point P so as to be superimposed on the coupling plate 10. At the lower limit position of the sliding range of the coupling plate 10, a locking protrusion 10b protruding from the lower end of the coupling plate 10 engages a push-up pin 11a protruding from the side of the push-up plate 11, and The concave portion 10c on the upper lower side of the coupling plate 10 and the fulcrum pin 12 are engaged with each other, and by pushing down the lock release lever 9, the lower end of the push-up plate 11 is pushed up. Further, at the upper limit position of the slide range of the coupling plate 10, the locking protrusion 10b of the coupling plate 10 separates from the push-up pin 11a, and the locking position with the fulcrum pin 12 moves to release the lock with the push-up plate 11. Lever 9
The connection with is also broken. A tongue piece 7a that comes into contact with a push-up plate 11 is provided on the side of the locking pawl 7, and the push-up plate 11 pushes up the locking pawl 7 via the tongue piece 7a, and the locking piece 8 It can be lifted up to release the lock.

With the structure described above, after operating the hydraulic pump 6 and applying hydraulic pressure to the hydraulic cylinder to raise the pedestal 2 to a predetermined position, the pedestal can be tilted by operating the lock release lever 9. It becomes possible.

That is, if there is no need to tilt the pedestal 2, the lock release lever 9 can be pushed down to lock the lock protrusion 10b at the lower end of the coupling plate 10 to the push-up pin 11a. 9 is the fulcrum pin 1 due to its own weight.
2 acts to rotate the vehicle to the right in the drawing, the locking pawl 7 is lifted and released from the locking piece 8, allowing it to be used in the same way as a normal transport vehicle.
(See Figure 3) If the pedestal 2 needs to be tilted, pull up the locking release lever 9 at the desired position, the locking pawl 7 will be locked with the locking piece 8, and it will be pushed up in this position. The part below the intersection of arm 3 and push-up arm 3' is fixed, and the part above the intersection of push-up arm 3' can be bent in a V-shape relative to the lower part, allowing the hydraulic cylinder to be lowered. By doing so, the pedestal 2 can be tilted. (Refer to Fig. 4) The carrier with the pedestal pushing device of this embodiment has the base 1
There are casters 13 at both base ends of the push-up arm 3.
A roller 14 is provided at the lower end of the holder, and the caster 13 and roller 14 allow for easy movement. Also, the base 1 has a built-in booster mechanism 15, which allows the base 1 to be lowered until it is tightly overlapped with the pedestal 2. Therefore, the casters 13 and rollers 14 set the base surface at a low position. In combination with this, the lowest position of the pedestal can be lowered, and it is also possible to insert the fork-shaped pedestal into the lowest pallet stacked on the floor and move it.

The present invention aims to provide an inclination to the pedestal by forming one side of the push-up arms that intersect in an X shape to be bendable, and by fixing the push-up arms at a predetermined position. Therefore, the fifth
As shown in the figure, push-up arms 3, 3' and cylinder 4
By arranging the cradle 2 symmetrically with respect to the above embodiment and reversing the inclination direction of the pedestal, and by forming the pedestal 2 from a single plate, the cylinder mechanism can be installed only in the center via the connecting shaft 16. By attaching the push-up arm 3 to the side plate 17, as shown in FIG. A bendable angle is set in advance, and the push-up arm 3 is first bent to the full bendable angle to make the pedestal 2 in an inclined state, and then the pedestal 2 is raised while being inclined. It is also possible to perform the same operation as in the embodiment described above at a desired position, and to make the pedestal 2 move in the opposite direction to that in the embodiment described above.

As described above, the carrier with the pedestal pushing device of the present invention has the following features:
It is possible to tilt the pedestal to a desired height at a desired height using the same cylinder mechanism as for raising the pedestal, and when the pedestal is tilted, the loaded object is biased toward the lower side of the slope.
When used as a workbench, the contents can be easily taken out, and it can be effectively used as a workbench and transport vehicle.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of a carrier with a pedestal pushing device, Fig. 2 is a perspective view showing a locking pawl and a release mechanism for the locking pawl, and Fig. Figure 4 and Figure 4 show how to tilt the carrier with the device for pushing up the cradle, and Figure 3 shows the pedestal in a horizontal state.
FIG. 4 is an explanatory diagram showing a state in which the pedestal is tilted, and FIGS. 5 and 6 are perspective views of modified examples. 1...base, 2...cradle, 2a...plate, 3,
3'...Push-up arm, 3a, 3b...Shape steel, 4...
...Hydraulic cylinder, 4a... Piston rod, 5...
... Stopper, 6 ... Hydraulic pump, 6a ... Operating rod, 7 ... Locking pawl, 7a ... Tongue piece, 8 ... Locking piece, 9 ... Lock release lever, 10 ... Connection plate, 1
0a... Long hole, 10b... Locking protrusion, 10c...
Recessed portion, 11... Push-up plate, 11a... Push-up pin, 12... Fulcrum pin, 13... Caster, 14
...Roller, 15 ... Boosting mechanism, 16 ... Connection shaft, 17 ... Side plate, 18 ... Angle adjustment bolt, P
……intersection.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A push-up arm is intersected in an X shape between the pedestal and the base, and is pivoted at the intersection point, and one end is pivoted to the pedestal or the base. , an X-shaped parallel expansion/contraction mechanism is provided, the other end of which is slidably attached along the base or pedestal, and the push-up arm pivot side of the base and the portion above the intersection point of one push-up arm are connected to the cylinder. In a transport vehicle with a pedestal push-up device connected by a mechanism, one of the push-up arms is formed to be able to bend only upward or downward using the intersection point as a fulcrum, and the push-up arm is provided with a portion below the intersection point. A plurality of locking pieces are provided along the longitudinal direction at predetermined intervals, and a locking claw whose tip is removable from the locking piece is suspended above the intersection point of the other push-up arm. A transport vehicle with a pedestal push-up device, characterized in that it is provided with a fixing mechanism consisting of: (2) The carrier with a pedestal push-up device according to claim 1, wherein the pedestal is in the form of a fork with two plates arranged side by side.