JP2005349938A - Cargo loading and unloading device of truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To lighten a lift frame mounting structure and to improve assemblability without especially reinforcing a rail frame mounting part of a load-carrying platform. <P>SOLUTION: This cargo loading and unloading device of a truck installing a loading base to freely elevate through a lift frame on the box type load-carrying platform constitutes its characteristic feature that the rail frame is internally provided on the load-carrying platform, the rail frame is roughly horizontally extended in the depth direction from a cargo loading and unloading opening part of a side part of the load-carrying platform and the lift frame is made to go in and out of the load-carrying platform by moving it through the rail frame. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cargo loading / unloading device for a truck for loading / unloading a cargo such as a car from a cargo loading / unloading opening on a side portion (rear end or left / right side end portion of the truck) of the box type loading platform of the truck. Is.

Conventionally, there has been a technology in which a lift frame is provided horizontally at a loading / unloading opening of a cargo bed via a hinge so that the load frame can be moved up and down on the lift frame (for example, Patent Document 1).
Japanese Utility Model Publication No. 6-20129

  In the prior art, it is necessary to secure a space necessary for moving the lift frame horizontally to allow the load platform to enter and exit. In addition, it is necessary to reinforce the hinge mounting portion of the loading platform and to secure the strength necessary for supporting the hinge in the loading platform.

  However, according to the present invention, as described in claim 1, in a cargo loading / unloading device for a truck in which a platform is mounted on a box-type cargo bed through a lift frame so that the platform can be raised and lowered, a rail frame is installed in the cargo bed, It is characterized in that a rail frame is extended substantially horizontally in the depth direction from the loading / unloading opening on the side of the loading platform, and the lift frame is moved through the rail frame to enter and exit the loading platform.

  According to a second aspect of the present invention, the platform is foldably provided on the lift frame.

  According to a third aspect of the present invention, the rail frame includes an upper rail and a lower rail, a slide frame is movably provided between the upper rail and the lower rail, and a lift frame is provided on the slide frame.

  According to a first aspect of the present invention, there is provided a truck loading / unloading device for mounting a platform on a box-type cargo bed through a lift frame so that a rail frame is provided in the cargo bed, After loading and unloading, the rail frame is extended substantially horizontally in the depth direction from the opening, and the lift frame is moved through the rail frame to enter and exit the loading platform. Therefore, the horizontal rotation of the lift frame as in the prior art becomes unnecessary, and it is not necessary to secure the space in the cargo bed as in the prior art, which is necessary for horizontally rotating and loading and unloading the load platform. The inside can be used effectively as a luggage space. In addition, the rail frame can be fixed to the cargo bed with a larger contact area than the conventional hinge, and there is no need to reinforce the rail frame mounting part of the cargo bed, reducing the weight of the lift frame mounting structure and assembling workability. Can be improved.

  In the invention according to claim 2, the platform is foldable on the lift frame. Therefore, when the loading platform is stored in the loading platform, the horizontal installation width of the loading platform can be reduced by folding the loading platform, and the lift frame and the loading platform can be stored compactly by using the side surface inside the loading platform. The inside of the cargo bed can be effectively used as a luggage space.

  According to a third aspect of the present invention, the rail frame includes an upper rail and a lower rail, the slide frame is movably provided between the upper rail and the lower rail, and the lift frame is provided on the slide frame. Therefore, for example, the slide frame can be supported so as to be sandwiched between the upper rail and the lower rail from above and below, and the mounting strength of the slide frame and the assembly workability can be improved.

  Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a cross-sectional side view of the rear part of the truck bed, FIG. 2 is a plan view thereof, FIG. 3 is a cross-sectional side view of the lift frame stored, and FIG. 4 is a rear view of the truck bed. The left and right doors 4 and 5 are provided on the rear side of the box-type bed 2 of the truck 1 for transporting cargo via hinges 3 so that the doors 4 and 5 can be opened and closed. Opening 2a is formed.

  A rail frame 9 is provided on the rear side of the loading platform 2 near the loading / unloading opening 2a. The rail frame 9 is fixed to the inner surface of the side wall of the loading platform 2 with bolts. The rail frame 9 connects the upper and lower rails 6 and 7 extending forward (inward) of the loading platform 2 from the loading / unloading opening 2a and the inner ends of the loading platform 2 of the upper and lower rails 6 and 7. It consists of a vertical frame 8 and is formed in a U shape in side view.

  A slide frame 12 is arranged between the upper rail 6 and the lower rail 7 in parallel with the upper rail 6 and the lower rail 7, and upper and lower rolling wheels 10 and 11 are provided on the upper surface side and the lower surface side of the slide frame 12, respectively. The upper and lower wheels 10 and 11 are fitted to the upper rail 6 and the lower rail 7 so as to roll freely, and the slide frame 12 is moved via the wheels 10 and 11 by the upper and lower rails 6 and 7 of the rail frame 9. Provide freely.

  A lift frame 15 is provided via upper and lower arms 13 and 14 substantially parallel to the side of the slide frame 12. The lift frame 15 includes two rectangular cylindrical receiving cylinders 16, upper and lower connecting frames 17 and 18 that fix the receiving cylinders 16 substantially in parallel and substantially vertically, and guide rollers 19 from below on the receiving cylinder 16. And two square cylindrical elevating frames 20 each having an upper end side inserted therein so as to be movable up and down.

  Further, the lower ends of the two lifting frames 20 are connected to each other by a receiving frame 26, a pivot fulcrum 25 is provided at the lower end of the lifting frame 20 fixed by the receiving frame 26, and the lower ends of the lifting frame 20 are rotated. A platform 24 is provided via a fulcrum 25, and a cargo such as a car 23 is placed on the platform 24 that is supported substantially horizontally at the lower end of the elevating frame 20.

  Further, a hydraulic lift cylinder 21 is connected to the upper connection frame 17 of the lift frame 15 via a shaft 22. The tip of the piston rod 27 of the lift cylinder 21 is connected to the receiving frame 26, and the lifting frame 20 is moved in and out of the receiving cylinder 16 by the advancement and retraction of the piston rod 27 so that the mounting table 24 is raised and lowered. In addition, a step 28 is provided that spans between the preceding table 24 in the raised position and the truck bed 2 when the previous table 24 is raised to the height of the loading platform 2. By rotating the step 28 around the hinge 28a by an operator, the step 28 is spanned between the platform 24 and the loading platform 2 of the truck, or the step 28 is stored on the upper surface of the loading platform 2.

  Further, the operator lifts the table 24 in the raised position so as to rotate around the rotation fulcrum 25, and rotates the platform 24 toward the receiving cylinder 16 so that a detachable hook or bolt (not shown) is used. Thus, the mounting base 24 is fixed to the receiving cylinder 16 side, and is configured to be supported by the lift frame 15 in an upright state.

  Further, connecting bodies 29 and 30 are provided at the rear part of the loading platform 2 and the rear part of the slide frame 12, respectively. In addition, connecting bodies 34 and 35 are provided at the front portion of the vertical frame 8 and the slide frame 12 inside the loading platform 2, respectively. In addition, a detachable pin 31 for selectively connecting any one of the connecting bodies 29 and 30 or each of the connecting bodies 34 and 35 is provided. When the slide frame 12 is moved to the rear or inward of the loading platform 2, stoppers 32 and 33 are provided on the rear portion of the loading platform 2 and the vertical frame 8, respectively. .

  The present embodiment is configured as described above, and the operator moves the slide frame 12 to the loading / unloading opening 2a side of the loading platform 2 and causes the rear side of the slide frame 12 to abut against the stopper 32. The connecting bodies 29 and 30 are connected by pins 31 to load and unload the cargo bed 2 and fix the slide frame 12 to the opening 2a side. Then, the lift cylinder 21 is actuated by an operating tool (not shown), the piston rod 27 of the lift cylinder 21 is moved forward and backward to raise and lower the platform 24 in a substantially horizontal posture, and the cart 23 is placed on the platform 24 so that it can be grounded or loaded. Lower or raise to a height of 2. Further, the above described platform 24 is raised to the height of the loading platform 2, a step 28 is passed between the above described loading platform 24 and the truck loading platform 2 at the raised position, and the car 23 on the above described platform 24 is moved to the loading platform of the truck. 2 or by moving the car 23 of the truck bed 2 to the platform 24 and loading and unloading the car 23.

  Further, as shown in FIG. 1, an operator lifts the table 24 in a substantially horizontal posture around the rotation fulcrum 25 and lifts the table 24 by a detachable hook or bolt (not shown). And the stage 24 is supported on the lift frame 15 in an upright state so as to be substantially parallel. Then, the connection of each of the connecting bodies 29 and 30 is released by pulling out the pin 31, and the operator pushes the slide frame 12 inward of the loading platform 2 so as to move away from the stopper 32 at the rear of the loading platform 2. 10 and 11 are rolled to move the slide frame 12 into the loading platform 2. When the lift frame 15 is housed in the inner surface of the side wall of the loading platform 2, the front body of the slide frame 12 is brought into contact with the stopper 33 of the vertical frame 8, and the connecting body provided at each of the vertical frame 8 and the front portion of the slide frame 12. 34 and 35 are connected by a pin 31, the vertical frame 8 and the slide frame 12 are fixed, the left and right doors 4 and 5 are closed, the cargo loading / unloading opening 2a of the loading platform 2 is closed, the lift frame 15 and the loading platform 24 are closed. Is stored in the inside of the loading platform 2.

  In the above embodiment, the lift frame 15 is fixed to the slide frame 12. However, the lift frame 15 may be detachable from the slide frame 12. Further, although the slide frame 12 is provided on the inner surface of the side wall of the cargo bed 2, for example, the slide frame 12 may be attached using the upper rail 6 provided on the ceiling surface of the cargo bed 2 and the lower rail 7 provided on the floor surface of the cargo bed 2. Good. Further, although the operator lifts the table 24 so as to rotate around the rotation fulcrum 25, the mounting table 24 may be rotated around the rotation fulcrum 25 using power such as electric power or hydraulic pressure. In addition, although the operator pushes and pulls the lift frame 15 into and out of the loading platform 2, the lifting frame 15 may be moved into and out of the loading platform 2 using power such as electric power or hydraulic pressure.

  As is apparent from the above, in the truck loading / unloading apparatus for mounting the loading platform 24 on the box-type loading platform 9 via the lifting frame 15, the rail frame 9 is installed inside the loading platform 9 and the lift is lifted. Since the frame 15 and the loading platform 24 are moved through the rail frame 9 and moved into and out of the loading platform 2, the horizontal rotation of the lift frame 15 as in the prior art becomes unnecessary, and the loading platform 24 is moved in and out by horizontal rotation. It is not necessary to secure the space required for the conventional technology inside the loading platform 2, and the interior of the loading platform 2 can be effectively used as a luggage space. It can be fixed with a larger contact area than the hinge, and there is no need to specially reinforce the rail frame 9 mounting portion of the loading platform 2, and the lift frame 15 mounting structure Weight as well as improve the workability of assembly of.

  Since the platform 24 is foldable on the lift frame 15, when the platform 24 is stored in the platform 2, the horizontal installation width of the platform 24 is reduced by folding the platform 24, The lift frame 15 and the loading table 24 can be stored in a compact manner using the inner surface, and the inside of the loading platform 2 can be effectively used as a luggage space.

  The rail frame 9 includes an upper rail 6 and a lower rail 7, and a slide frame 12 is movably provided between the upper rail 6 and the lower rail 7, and a lift frame 15 is provided on the slide frame 12. The slide frame 12 can be supported so as to be sandwiched between the lower rail 7 and the mounting strength of the slide frame 12 and the assembly workability can be improved.

Sectional side view of the rear part of the truck bed. FIG. The cross-sectional side view of a lift frame accommodation state. The rear view of the truck bed.

Explanation of symbols

2 Loading platform 6 Upper rail 7 Lower rail 9 Rail frame 12 Slide frame 15 Lift frame 24 Mounting platform

Claims (3)

  In a truck loading / unloading device in which a loading platform is mounted on a box-type loading platform through a lift frame, a rail frame is installed in the loading platform, and a depth from a loading / unloading opening on the side of the loading platform. A truck loading / unloading device, wherein a rail frame is extended substantially horizontally in a direction, and a lift frame is moved through the rail frame to enter and exit from a loading platform.   The truck loading / unloading apparatus according to claim 1, wherein the platform is foldably provided on the lift frame.   The load of a truck according to claim 1 or 2, wherein the rail frame includes an upper rail and a lower rail, a slide frame is provided between the upper rail and the lower rail, and a lift frame is provided on the slide frame. Loading and unloading equipment.

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