JPS63101300A - Derrick lift for trailer - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a trailer lift for parking a trailer in an upright position when the trailer is parked.

(Prior Art) When a trailer carrying large cargo is parked, the trailer bed is usually parked separately from the towing vehicle section having an engine and a driver's cab.

Here, if the trailer is to be parked in a state in which it can be loaded, that is, in a horizontal state, a parking space that is at least as large as the trailer is required.

Therefore, when parking multiple trailer beds, in order to make effective use of the parking space, a crane truck is used to park the trailer beds on top of each other, or the front part of the trailer bed is stood upright. Standing parking is proposed.

(Problem to be Solved by the Invention) However, the above-mentioned parking method in which multiple trailer platforms are stacked or erected using lane vehicles requires the provision of a crane vehicle in the parking lot. , the work is crowded with people, and there are also problems in responding to emergencies. Further, the work of moving trailer loading platforms using a crane truck is not only complicated and dangerous, but also poses many problems in terms of safely and securely holding each trailer loading platform.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a undulation lift for trailers that uses an undulation lift individually for each trailer platform and achieves safe and reliable upright parking. shall be.

(Means for Solving the Problems) In order to achieve the above object, the present invention is arranged on the ground side or on the side of the trailer bed, and when stored when not in use, can fully fit into the space below the trailer bed. The gist of the trailer lift is that it is equipped with a hoisting mechanism that extends between the ground and the trailer bed and raises the trailer bed around its rearmost wheel shaft when in use.

(Function) In the above configuration, when the trailer bed is guided to a fixed position in the parking lot and the lifting mechanism is extended between the ground and the trailer bed, the front part of the trailer bed stands up with its rearmost wheel axis as the center of rotation. and safely and reliably maintains the standing state by resting the weight on the lifting mechanism.

(Example) Hereinafter, suitable embodiments of the present invention will be described based on the drawings.

This will be explained in detail.

1 and 2 show a first embodiment of the present invention, in which FIG. 1 is a side view of the trailer bed in an upright parking state,
The figure is a side view of the main parts of the lifting mechanism.

In the figure, 1 is a lift base fixed to the ground, 2 is a lifting mechanism installed on this lift base 1, and this is a lifting mechanism installed between the lift base 1 and the locking part C set on the trailer bed B In this embodiment, the lifting mechanism 2 is configured as follows.

That is, the first and second hydraulic cylinders 3, 4 are arranged vertically with respect to the lift base 1, the bases of both hydraulic cylinders 3.4 are pivotally connected to the lift base 1, and both hydraulic cylinders 3.4 are pivotally connected to the lift base 1. 4
The rod is pivotally connected to the base of the lifting plate 5 whose tip is engaged with the locking part C of the trailer loading platform B, while the third rod is attached to the lift base 1 opposite to both the hydraulic cylinders 3 and 4. The base of the hydraulic cylinder 6 is pivotally connected, and its rod is pivotally connected to the tip of the cylinder main body of the second hydraulic cylinder 4, so that when not in use, each of the first, second and third hydraulic cylinders 3.
4.6 in the reduced state, these hydraulic cylinders 3.
4.6 is laid down on the side of the lift base 1 together with the lifting plate 5 and placed in a stored state, and the form at this time is large enough to fit into the space below the trailer loading platform B.

The above-mentioned undulating lift having a simple structure is used by fixing the lift base 1 at a predetermined position on the ground of a parking lot.

When the trailer bed B is parked, the rearmost wheels are blocked so that the trailer bed B is guided above the undulating lift and does not move. In this way, first of all,
When the second hydraulic cylinder 4 is extended, the tip of the lifting plate 5 rises toward the trailer loading platform B. In addition to the extension movement of the second hydraulic cylinder 4, the first hydraulic cylinder 3 is extended in a fine adjustment manner, and the tip of the lifting plate 5 is engaged with the locking portion C of the trailer loading platform B.

Next, when the third hydraulic cylinder 6 is extended, the lifting plate 5 moves upward together with the first and second hydraulic cylinders 3.4 to lift up the trailer bed B. . At this time, the first and second hydraulic cylinders 3 and 4 are simultaneously extended in accordance with the raising movement of the trailer loading platform B, and when the trailer loading platform B stands up at the planned angle to the ground, each hydraulic cylinder 3. Stop the operation of 4°6.

In this way, the trailer loading platform B is maintained in an upright state by resting its weight on the lifting mechanism 2, and the plurality of trailer loading platforms B are parked close to each other in an upright state.

FIG. 3 shows a second embodiment of the present invention, and is a front view of the main parts of the lifting mechanism.

In this embodiment, as the lifting mechanism 2, first and second rod doors 8, which are not elastic themselves, are used instead of the first and second hydraulic cylinders 3.4 in the first embodiment. The structure in which the first rod door base is pivoted to the lift base 1 is such that the pivot shaft 9 is connected to the elongated hole l provided in the lift base 1.
It is configured to be movable within O, and the third
The rod of the hydraulic cylinder 1) corresponding to the hydraulic cylinder 6 of is pivotally connected to the intermediate position of the first rod 7,
When not in use, when the hydraulic cylinder 1) is contracted with the base pivot shaft 9 of the first rod 7 moved toward the lifting plate 5 within the elongated hole 10, the second rod 8 and the lifting The upper plate 5 and the upper plate 5 are laid down on the side of the lift base L and placed in a retracted state, and when in use, the base pivot shaft 9 of the first rod 7 is extended to allow the lifting plate 5 to be raised toward the trailer loading platform B. This is done by moving it to the opposite side within the hole 10, and the other usage is substantially the same as in the first embodiment described above.

4 to 6 show a third embodiment of the present invention,
FIG. 4 is a side view of the trailer bed in an upright parked state, FIG. 5 is a front view of the same, and FIG. 6 is a (!+1 plane M) of the trailer bed in a parked state with a small upright angle.

In this embodiment, as the lifting mechanism 2, the base of a hydraulic cylinder 12 is pivotally attached to the lift base l, and the engaging member work 3 attached to the rod of the hydraulic cylinder 12 is connected to the locking part C of the trailer bed B. When not in use, the hydraulic cylinder 12 is contracted and laid down on the side of the lift base l to be stored, and when in use, the hydraulic cylinder 12 is
``Pull up from the lift base L to engage and connect the retaining member 13 to the locking part C of the trailer bed B, and then
The trailer loading platform B is erected by the extension movement of the hydraulic cylinder 12.

At this time, it is preferable to use an appropriate method to draw the rear part of the trailer bed B, that is, the rear part of the rearmost wheel, toward the lift base l side as the trailer bed B rises.

Furthermore, as shown in FIG. 5, when the hydraulic cylinders 12 are arranged in parallel at appropriate intervals, the stability against overturning of the trailer loading platform B during standing parking is improved.

Furthermore, if the extension amount of the hydraulic cylinder 12 is short and the undulating lift is miniaturized, as shown in FIG. 6, the raising angle of the trailer loading platform H will be small, but handling will be extremely convenient.

In each of the embodiments described above, all the lifting mechanisms have been shown to extend from the ground side, but it is of course possible to have a structure in which they extend from the trailer loading platform side toward the ground. In particular, the third embodiment, which is a smaller version of the undulating lift shown in Fig. 6, is suitable for mounting on a trailer loading platform.
To make standing parking convenient in parking lots wherever you go.

Further, although an example of the use of a hydraulic cylinder is shown in the lifting mechanism of each of the above embodiments, this may also be an electric or pneumatically operated device that expands and contracts, and the operation of this lifting mechanism can also be controlled from a control panel. In addition to centralized control, individual control may be performed for each up-and-down lift.

(Effects) As explained above, according to the present invention, when parking a trailer bed, a undulating lift individually arranged for each trailer bed is used, and each trailer bed is parked upright. This makes effective use of the parking space, and is less dangerous than the conventional work of moving trailer beds using lanes (also, each trailer bed can be parked in an upright parking position reliably with its own undulation lift). Since it is held, it is highly stable, and furthermore, it has excellent adaptability to use as a trailer loading platform in an emergency.

[Brief explanation of the drawing]

FIG. 1 is a side view of a trailer loading platform in an upright parked state showing a first embodiment of the present invention, FIG. 2 is a side view of the main parts of the lifting mechanism,
Fig. 3 is a front view of the main parts of the lifting mechanism showing the second embodiment of the present invention, Fig. 4 is a side view of the trailer bed in the upright parked state showing the third embodiment of the invention, and Fig. 5 6 is a front view of the same, and FIG. 6 is a side view of the trailer in a parked state with a small upright angle. 1... Lift base, 2... Lifting mechanism, 3... First
hydraulic cylinder, 4... second hydraulic cylinder, 5...
- Lifting plate, 6...Third hydraulic cylinder, 7...
・First rod, 8...second rod, 9...first
rod base pivot shaft, 10...long hole, 1)...hydraulic cylinder, 12...hydraulic cylinder, 13...engaging member. Special #fnumohito 1 entry required

Claims (4)

[Claims] (1) It is installed on the ground side or the trailer bed side, and when stored when not in use, it fully fits into the space below the trailer bed, and when in use, it extends between the ground and the trailer bed to move the trailer bed to the end. A hoisting lift for a trailer, characterized in that it is equipped with a hoisting mechanism that lifts up the trailer with a wheel shaft as the center of rotation. (2) The trailer lift according to claim 1, wherein the hoisting mechanism comprises a fluid pressure cylinder. (3) The trailer lift according to claim 1, wherein the hoisting mechanism comprises a plurality of fluid pressure cylinders and a hoisting plate. (4) Claim 1, wherein the lifting mechanism comprises a plurality of rods, one fluid pressure cylinder, and a lifting plate.
A luffing lift for trailers as described in section.