JP2000085446A - Motor-truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To position and fix a deck easily and positively in a specified position on a body frame in a motor-truck with the deck constituted to be detachable from a body. SOLUTION: In a motor-truck with a deck 4 detachably placed and fixed onto a body frame 3, a nearly conical positioning member 7 and a nearly conical recessed part 8 engaged with the positioning member 7 are provided between a body frame 3 and the deck 4. To be concrete, a support leg 5 for holding the deck in the self-supported state in a specified height position is provided in an in-and-out state near the bottom part of the deck 4, and a fluid cylinder 6 for vertically moving the deck 4 is provided on the body frame 3 side. The positioning member 7 is provided at the free end of a piston rod of the fluid cylinder 6, and the recessed part 8 engaged with the positioning member 7 is provided at the bottom part or the like of the deck 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lorry, and more particularly to a lorry in which a loading platform is detachable from a vehicle body.

[0002]

2. Description of the Related Art Conventionally, in a truck transporting various kinds of cargo, for example, in order to eliminate waiting time for loading and unloading cargo to and from a cargo carrier, or to increase the operation rate of a vehicle, the cargo platform is moved relative to a vehicle body. By being configured to be detachable, for example, when loading and unloading cargo, the loading platform is separated from the vehicle body to perform loading and unloading of cargo, and a vehicle separated from the loading platform can carry another loading platform. Such is known.

[0003] In the above-mentioned detachable type loading platform, support legs for independently supporting the loading platform at a predetermined height slightly higher than the body frame on which the loading platform is mounted are provided so as to be freely put in and out of the bottom of the loading platform. It is common to use the vehicle's air suspension while the carrier is mounted on the body frame when moving the support legs in and out, or move the carrier up and down with a dedicated fluid cylinder such as a hydraulic cylinder. Let it.

[0004] When the loading platform is to be detached from the vehicle body,
The vehicle body is moved forward and separated from the carrier while the carrier is independently held at a predetermined height slightly higher than the body frame by the support legs. When placing the carrier on the vehicle body frame, the vehicle body frame enters the lower part of the carrier while retreating the vehicle toward the carrier, and the carrier is lifted by the air suspension or the fluid cylinder to store the support legs. The carrier is lowered and placed on the body frame.

[0005]

However, when the carrier is placed on the body frame as described above, it is necessary to place the carrier at a predetermined position on the frame. Since the positioning of the vehicle body frame is performed by a sensor or the like, the configuration is complicated, there are many malfunctions, and there is a problem that skill is required.

The present invention has been proposed in view of the above problems, and an object of the present invention is to provide a lorry capable of easily and surely positioning and fixing the above-mentioned carrier at a predetermined position on a vehicle body frame. Aim.

[0007]

In order to achieve the above object, a lorry according to the present invention has the following configuration.

That is, in a truck having a loading platform detachable from a vehicle body, a substantially conical positioning member and a substantially conical recess engaging with the positioning member are provided at a contact portion between the body frame and the loading platform. It is characterized by having.

Specifically, for example, supporting legs for independently supporting the loading platform at a predetermined height position are provided so as to be able to be taken in and out near the bottom of the loading platform, and a fluid cylinder for vertically moving the loading platform is provided on the vehicle body frame side. The positioning member is provided at a free end of a piston rod of the fluid cylinder, and a concave portion for engaging with the positioning member is provided at a bottom portion or the like of the carrier.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a truck according to the present invention will be specifically described based on an embodiment shown in the drawings. 1 is a side view showing an embodiment of a lorry according to the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is an enlarged view of the left half of FIG.

In the figure, reference numeral 1 denotes a truck body (hereinafter, referred to as a truck body).
A loading platform 4 is removably mounted and fixed on a vehicle body frame (chassis) 3 extending behind the driver's seat 2 of the vehicle body 1. In the present embodiment, a container-shaped box-shaped (packing box) is used as the loading platform 4, and a plurality of supports for independently supporting the loading platform 4 at a predetermined height slightly higher than the body frame 3. A leg 5 is provided at the bottom of the loading platform 4 so as to be freely taken in and out. When the carrier 4 is held by the support legs 5 in a self-standing state, the carrier 4 is moved up and down (elevated and lowered), and a fluid cylinder 6 such as a hydraulic cylinder is provided on the vehicle body frame 3 for that purpose.

In the present embodiment, the support leg 5 is formed in a substantially inverted L-shape as a whole, and has a configuration in which an upper horizontal piece is rotatably attached to a side portion of a carrier. The supporting legs 5 are normally arranged in a substantially horizontal state on the lower side surface of the loading platform 4 as shown by solid lines in FIGS. 3 and 2. After being slightly pulled out to the side of the loading platform 4 as shown in FIG. The support leg 5 is provided with a locking mechanism or the like for positioning and holding the above-mentioned substantially horizontal position and the downward rotation position, but is omitted in the figure.

The fluid cylinder 6 is mounted on the body frame 3.
And is integrally fixed to a bracket 30 provided integrally with the cylinder 6 via a support plate 31 and the like.
A substantially conical positioning member 7 is integrally attached to the end of the position a. A substantially conical recess 8a with which the positioning member 7 engages is provided on the lower surface side of the recess forming member 8 in the lower portion of the carrier 4 above the piston rod 6a. When the positioning member 7 is engaged with the concave portion 8a, the carrier 4 is positioned and held at a predetermined position on the vehicle body frame 3. In the figure, T indicates a tire, and G indicates its ground contact surface.

In the above configuration, as shown in FIG. 3, the positioning member 7 is engaged with the concave portion 8a and the loading platform 4 is positioned and mounted at a predetermined position on the vehicle body frame 3. When detaching, as shown in FIG. 4, the piston rod 6a of the fluid cylinder 6 is extended (raised), and the carrier 4 is moved through the positioning member 7 and the concave portion 8a.
To rise. In this state, each support leg 5 is slightly pulled out to the side, and then lowered and rotated as shown in FIG. Next, when the piston rod 6a is contracted (downward), the lower end of the support leg 5 comes into contact with the ground, and the carrier 4 is held by the support leg 5 in an independent state.

Subsequently, when the piston rod 6a is contracted, the positioning member 7 at the tip of the piston rod 6a is moved.
Is separated from the recess 8a, the positioning member 7 returns to the original position shown by the chain line in FIG. In this state, by moving the vehicle body 1 forward and pulling it away from the loading platform 4, it is possible to start the next transporting operation, and to load and unload the cargo on the loading platform 4 independently of the vehicle body 1. You can do it.

Next, when the carrier 4 is placed on the vehicle body frame 3, the vehicle body 1 is retracted toward the carrier 4 which is held independently by the support legs 5, as shown in FIG. The vehicle body frame 3 is made to enter below the vehicle body 4, and the vehicle is stopped when the front part of the carrier 4 comes into contact with a stopper 9 (see FIG. 1) provided at the front part of the body frame 3. At this time, the position of the positioning member 7 and the position of the concave portion 8a in the front-rear direction of the vehicle body are substantially matched.

Next, the piston rod 6a of the fluid cylinder 6 provided on the body frame 3 side is extended, and the positioning member 7 provided on the upper end of the piston rod 6a engages with the concave portion 8a on the carrier 4 side. When the position of the positioning member 7 and the recess 8a in the vehicle width direction is slightly shifted as shown in FIG. 5 at that time, the positioning member 7 and the recess 8a are formed in a substantially conical shape. Because
When the positioning member 7 moves up with the piston rod 6a to lift the carrier 4, the carrier 4 moves in the direction in which the concave portion 8a matches the positioning member 7 and is lifted to a predetermined position as shown in FIG. Is held. In this state, if the support leg 5 is pulled up and the piston rod 6a is contracted,
As shown in FIG. 3, the loading platform 4 can be installed and fixed at a predetermined position on the vehicle body frame 3.

In the above embodiment, the positioning member 7 is provided at the tip of the piston rod 6a of the fluid cylinder 6 which moves up and down the loading platform 4. However, the positioning member may be provided at a position different from the fluid cylinder 6. Good. For example, a positioning member 7 having a substantially conical or protruding conical shape is provided on the upper surface of the body frame 3, and a concave portion 8 a engaging with the positioning member 7 is provided on the bottom of the loading platform 4. Alternatively, the concave portion 8a may be provided on the body frame 3 side, and the positioning member 7 to be engaged with the concave portion 8a may be provided on the carrier 4 side.

[0019]

As described above, the truck according to the present invention has the above-described configuration, so that when the carrier 4 is placed on the body frame 3 even when the two are slightly displaced, they are substantially conical. The carrier 4 can be easily and reliably positioned and held at a predetermined position on the vehicle body frame 3 by engagement with the positioning member 7 and the concave portion 8a. There are effects such as being able to do.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a lorry according to the present invention.

FIG. 2 is an enlarged cross section taken along line AA in FIG.

FIG. 3 is an enlarged view of a left half in FIG. 2;

FIG. 4 is the same view as in the state where the carrier is raised.

FIG. 5 is the same view as in a state where the vehicle body has entered below a free-standing carrier.

[Explanation of symbols]

 Reference Signs List 1 truck body (body) 2 driver's seat 3 body frame (chassis) 4 carrier (packing box) 5 support leg 6 fluid cylinder 7 positioning member 8 recess forming member 8a recess T tire G ground

Claims (2)

[Claims] 1. A truck in which a loading platform is removably mounted and fixed on a vehicle body frame, a substantially conical positioning member between the vehicle body frame and the loading platform, and a substantially conical positioning member engaged with the positioning member. A lorry characterized by having a concave portion. 2. A support leg for independently supporting the loading platform at a predetermined height position is provided so as to be able to be taken in and out near the bottom of the loading platform, and a fluid cylinder for vertically moving the loading platform is provided on the vehicle body frame side. 2. The truck according to claim 1, wherein the positioning member is provided at a free end of the piston rod, and a concave portion for engaging with the positioning member is provided at a bottom of the carrier.