JPH0539962Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a vehicle transport vehicle commonly called a two-tiered semi-trailer, in particular a vehicle that can efficiently mount a wide vehicle on the lower berth. This invention relates to an upper deck elevating device for a transport vehicle.

[Conventional technology]

In general, it has a chassis on which a vehicle can be mounted, and an upper deck for mounting a vehicle that is supported on the chassis and is movable upward to provide a space for mounting the vehicle on the chassis, and this upper deck is fixed without any pillars. A vehicle carrier is known which is supported on a chassis so that it can be raised and lowered (see Japanese Patent Publication No. 59-39341).

In this type of conventional vehicle transport vehicle, the upper deck is mounted on the chassis by a link arm device that includes a hydraulic cylinder and a slide column configured by telescopically fitting an inner column into an outer cylinder in parallel. is supported by By removing the fixed pillars from the top of the vehicle, it becomes easier to open and close the door of the vehicle on which it is mounted, and the inner dimensions of the upper deck are reduced by the thickness of the fixed pillars, making it easier to mount wide vehicles on the upper deck. There are advantages such as ease of use.

[Problem that the invention attempts to solve]

However, in an upper deck elevating device for a vehicle transport vehicle in which the upper deck is supported on the chassis by a link arm device configured as described above,
Because the upper link of the link arm device, the hydraulic cylinder, and the slide column intersect,
It is necessary to arrange the hydraulic cylinder and the slide column inside the link arm device, and the width of the link arm device plus the width of the hydraulic cylinder is required.
In addition, the external width of the vehicle transport vehicle is subject to legal regulations, so it cannot be made too wide. Therefore,
There are some vehicles that cannot be loaded onto the lower deck with a difference of about 100 mm, which worsens vehicle transportation efficiency.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an upper deck elevating device for a vehicle transport vehicle, which eliminates the problems of the above-mentioned conventional techniques and allows vehicles to be easily mounted on the lower deck.

[Means for solving problems]

In order to achieve the above object, the present invention includes a chassis on which a vehicle can be mounted, and an upper deck for mounting a vehicle that is supported on the chassis and is movable upward so as to provide a space for mounting the vehicle on the chassis. In the vehicle transport vehicle, the upper deck has a link device formed by pivotally connecting the tip of an upper link having an arm protruding perpendicularly to the longitudinal axis on the base end side and the tip of a dogleg-shaped lower link. The base end is pivotally connected to the upper deck, and the base end of the dogleg-shaped lower link is pivotally connected to the vehicle chassis, so it is supported on the vehicle chassis, and protrusions are provided near the tip of the dogleg-shaped lower link and the base end of the upper link. The arm is connected by a slide column formed by telescopically fitting a slide rod into a sheath rod and a hydraulic cylinder arranged in parallel with this slide column.The thickness of the slide column and the thickness of the upper link and lower link of the link device are as follows. It is smaller than the outer diameter of the hydraulic cylinder, and is characterized in that the longitudinal axis of the hydraulic cylinder, the center plane of the thickness of the slide column, and the center plane of the thickness of the upper link and lower link of the link device are located in approximately the same plane. do.

[Effect]

According to the present invention, the upper deck includes a slide column formed by telescopically fitting a slide rod into a sheath rod, and an arm protruding from the base end of the upper link of the link device and the vicinity of the tip of the dogleg-shaped lower link. It is connected to the slide column by a hydraulic cylinder arranged in parallel, and the upper and lower links of the link device are moved up and down while being guided by the slide column by the hydraulic cylinder to move up and down. However, depending on the thickness of the slide column and the upper link of the link device, The thickness of the lower link is smaller than the outside diameter of the hydraulic cylinder, and the longitudinal axis of the hydraulic cylinder, the center plane of the thickness of the slide column, and the center plane of the thickness of the upper link and lower link of the link device are approximately in the same plane. By positioning this, the internal dimensions of the lower tier are wider than conventional ones, making it possible to mount vehicles that cannot be mounted with conventional ones, and improving vehicle transportation efficiency.

〔Example〕

An embodiment of the lifting position of the upper deck of a vehicle transporter according to the present invention will now be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 indicates a chassis of a vehicle carrier, and the center portion of the chassis 1 is formed in a concave shape as indicated by reference numeral 1a. The chassis 1 has a rear wheel 2 at its rear end, and is provided with a recess 1b near its front end into which the rear end of a tractor 3 is inserted. This recess 1
b is provided with a jack 4 capable of supporting the chassis 1 on the ground. The upper surface of the chassis 1 constitutes a lower surface on which a vehicle is mounted, as is well known.

An upper deck 6 is provided above the chassis 1, and in the illustrated example, the upper deck 6 includes a deck section 6a at the front end and a deck section 6 at the middle.
b, and a deck section 6c at the rear end. Detsuki section 6a, 6b, 6
The ends of the tubes c that are adjacent to each other are pivotally connected to each other by a transverse pivot shaft 7, so that they can be tilted relative to each other about the pivot shaft 7.

A base end 10a of an upper link 10 is pivotally attached to both sides of the front and rear ends of the intermediate section 6b by a pin 11.
b is pivotally connected to the tip 13b of the dogleg-shaped lower link 13 via a pin 15. A base end 13a of the lower link 13 is pivotally connected to a bracket 12 fixed to the chassis 1 via a pin 14, and the intermediate deck section 6b is supported on the chassis 1 by each of the links 10 and 13. There are four support mechanisms provided on the front, rear, left and right sides of the deck section 6b, but since they are the same, one of them will be explained below with reference to FIG. 2.

As shown in FIG. 2, an arm 17 is provided protruding from the base end 10a of the upper link 10 perpendicularly to the longitudinal axis thereof, and between the arm 17 and the lower link 13 is a hydraulic cylinder 18. and a slide column 19 are interposed in parallel. These hydraulic cylinder 18 and slide column 19 are pin-coupled via a bracket 20 on the lower link 13 side, and are directly pin-coupled on the arm 17 side. In addition, the hydraulic cylinder 18, the slide column 1
9 and each link 10, 13 are arranged so that their longitudinal center lines almost coincide, and the thickness of slide column 19 and each link 10, 13 is smaller than the external width dimension of hydraulic cylinder 18. It is configured so that

The slide column 19 has a sheath rod 21 and a slide rod 22.
It is made up of telescopic fittings. Scabbard 2
1 is constructed as shown in FIGS. 3 and 4, and is composed of, for example, a rectangular cylindrical body. The slide rod 22 is constructed as shown in FIGS. 5 and 6, and is made of a flat plate. One end is clamped and fixed to the bracket 20, and the other end is telescopically fitted into the sheath rod 21. The slide rod 22 preferably has a plurality of holes 24, 24...2 in the longitudinal direction on its surface.
4 is bored, and a lock pin (not shown) that can be freely engaged with this hole 24 is provided, and when the slide rod 22 is expanded or contracted, this pin engages with the hole 24 and contracts the slide rod 22 at a predetermined position. It is also possible to configure it so that it can be stopped. In FIG. 2, the raised position of the upper deck 6 is shown by a solid line, and the lowered position of the upper deck 8 is shown by a virtual line. In the raised position of the upper deck 6, the hydraulic cylinder 18 is in an extended state, and when the hydraulic cylinder 18 is moved in the direction of contraction,
The slide column 19 is also moved in the direction of contraction, the upper link 10 and the lower link 13 of the link device are rotated in a direction in which the angle between them becomes smaller, and the upper deck 8 is lowered. Finally, the hydraulic cylinder 18 and the slide column 19 are sandwiched between the upper link 10 and the lower link 13, and are in a folded state.
The upper deck 8, which is in the lowered position shown by the imaginary line, can be moved to the operating position by moving the hydraulic cylinder 18 in the extending direction. When the hydraulic cylinder 18 is moved in the direction of extension, the slide column 19 is also moved in the direction of extension, and the upper link 1 of the linkage device is moved.
0 and the lower link 13 are rotated in a direction in which the angle between them increases, and the upper deck 8 rises to the raised position shown by the solid line.
a is displaced upward by a lifting device composed of a hydraulic cylinder 25 and a slide column 26, and the deck section 6c at the rear end is displaced upward by a lifting device composed of a hydraulic cylinder 27 and a slide column 28. It's summery. These slide pillars 2
6 and 28 are constructed similarly to the slide column 19 described above.

Figure 1 shows the chassis 1 with the upper deck 6 raised.
The lower deck consisting of the vehicle 3 and the upper deck of the upper deck 6
However, when the hydraulic cylinders 18, 25, and 27 are contracted, each deck section 6a, 6b, and 6c is displaced so as to overlap on the chassis 1 (the displacement state is not shown). ).

According to this embodiment, the hydraulic cylinder 18, the slide column 19, and each link 10, 1 constitute the lifting device for the intermediate deck section 6b.
3 are arranged in parallel (see FIG. 2) so that their longitudinal center lines almost coincide with each other, and the thickness of the slide column 19 and each link 10, 13 is as follows.
Since it is configured to be smaller than the external width dimension of the hydraulic cylinder 18, the internal dimension of the lower stage can be made wider, making it possible to extremely easily mount a wide vehicle. Furthermore, with the above configuration, when the upper deck 6 is lowered, the height of the upper deck 6 is lower than that of the conventional one, which prevents the vehicle from slipping during rain, etc. This has the effect of making it easier to mount the vehicle on the vehicle. Furthermore, since the longitudinal length of the link mechanism when the upper deck 6 is lowered can be shortened, there is also the effect that the worker can easily enter and exit the lower deck in this state. In addition,
The elevating devices for the deck sections 6a and 6c at the front and rear ends have the same structure as the conventional one, but since this structure does not narrow the inner dimension of the lower stage, it can be used as in the conventional one.

[Effect of idea]

As is clear from the above description, according to the present invention, the hydraulic cylinder, slide column, and upper and lower links that constitute the lifting device for the upper deck are
They are arranged in parallel so that their longitudinal center lines almost coincide, and the thickness of the slide column and each link is smaller than the external width dimension of the hydraulic cylinder. It is possible to increase the dimensions, and there are effects such as being able to extremely easily mount a wide vehicle.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the upper deck elevating device according to the present invention, Fig. 2 is a side view of the elevating device showing the main parts of the present invention, and Figs. 3 and 4 are the sheath rods according to the present invention. FIGS. 5 and 6 are a plan view and a side view showing a sliding rod according to the present invention. 1... Chassis, 6... Upper deck, 6a to 6c...
...Detsuki section, 10...Top link, 13
... Lower link, 18, 25, 27 ... Hydraulic cylinder, 19, 26, 28 ... Slide column, 21 ...
...Sheath rod, 22...Slide rod.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Vehicle transportation having a chassis on which a vehicle can be mounted, and an upper deck for mounting a vehicle that is supported on the chassis and is movable upward to provide space for mounting the vehicle on the chassis. In a vehicle, the upper deck has a link device formed by pivotally connecting the tip of an upper link having an arm protruding perpendicularly to the longitudinal axis on the base end side and the tip of a dogleg-shaped lower link. The end is pivotally connected to the upper deck, and the base end of the dogleg-shaped lower link is pivotally connected to the vehicle chassis, so that it is supported on the vehicle chassis. The arm is connected by a slide column formed by telescopically fitting a slide rod into a sheath rod and a hydraulic cylinder arranged in parallel with this slide column.The thickness of the slide column and the thickness of the upper link and lower link of the link device are It is smaller than the outer diameter of the cylinder, and is characterized in that the longitudinal axis of the hydraulic cylinder, the center plane of the thickness of the slide column, and the center plane of the thickness of the upper link and lower link of the link device are located in approximately the same plane. Upper deck elevating device for vehicle carriers. 2 Drill multiple holes in the longitudinal direction of the slide rod,
The upper deck elevating device for a vehicle transport vehicle according to claim 1, characterized in that a lock pin that can be freely engaged is provided in this hole so that the contraction of the slide rod can be stopped at a predetermined position.