JP2008110640A - Load-receiving base lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a load-receiving base lifting device facilitating visual recognition of a lamp unit even during work using a load-receiving base. <P>SOLUTION: The load-receiving base lifting device L is provided with a base part load-receiving base 51; and a leading part load-receiving base 52 foldably connected to the base part load-receiving base 51, and is stored at a lower part behind a vehicle body. The leading part load-receiving base 52 is narrower than the base part load-receiving base 51 regarding a width direction of a vehicle body. On an outer portion in the vehicle width direction of the leading part load-receiving base 52 at the base part load-receiving base 51, a restriction part 60 upwardly projected than a floor surface of a baggage box 1 mounted on the vehicle body at the rising position of the load-receiving base is provided. The lamp unit 13 is arranged on an outer side in the vehicle width direction of the leading part load-receiving base 52 at the base part load-receiving base 51. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a load receiving table lifting device. More specifically, the present invention relates to a load receiving table lifting / lowering device that is attached to the rear part of a truck and is used for loading and unloading loads.

  In order to save labor in loading and unloading cargo in a lorry, an underfloor retractable cradle lifting device is attached to the lower part of the rear end of the pallet of the lorry. A single-fold type cradle and a three-fold type cradle are appropriately employed.

  This cargo cradle is composed of a base cargo cradle on the vehicle body side and a front cargo cradle that is foldably connected to the base cargo cradle. Its width (dimension in the vehicle body width direction) Many of them are almost the same as the width of the load box mounted on the car. However, the width of the load receiving base is narrower than the width of the load box so that workers can securely hold the cart while the load receiving base is raised and lowered. is there.

  If the width of the cargo cradle is made narrower than the width of the cargo box as in the latter case, when the cart is moved from the cargo box to the cargo cradle, the cart may fall at the outer side in the width direction of the cargo cradle. In order to prevent the cart from falling, it is known to extend the width of the base load receiving table to both ends of the cargo box and to provide a restricting portion that projects the extended portion upward (see Patent Document 1).

  On the other hand, in vehicles including trucks, it is necessary to attach taillights, brake lights, direction indicators, reverse lights, etc. to the rear end of the vehicle in order to call attention to vehicles traveling behind. The position of is limited to a position that does not protrude from both ends of the packing box due to legal restrictions.

JP 2003-226187 A

  However, in the load receiving platform lifting device described in Patent Document 1, since the base load receiving platform is disposed from one end of the load box to the other end in order to provide the restricting portion, the load receiving platform is stopped at the highest position. When the work is being carried out, there are cases in which it is difficult to see the lamp due to being obstructed by both end portions of the base load receiving base.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a load receiving table elevating device capable of easily recognizing a lighting device even during work using the load receiving stand.

The load receiving table lifting device of the present invention is a load receiving table lifting device that includes a base load receiving table and a front load receiving table that is foldably connected to the base load receiving table and is stored in the rear lower part of the vehicle body. ,
The leading part cradle is narrower than the base cradle in the width direction of the vehicle body;
A restricting portion that protrudes upward from the floor surface of the cargo box mounted on the vehicle body is provided at an outer portion in the vehicle width direction of the front load receiving table in the base load receiving table at the highest position of the load receiving table. In addition, the lighting device is arranged on the outer side in the vehicle width direction of the front part receiving platform in the base receiving platform.

  In the load receiving platform lifting apparatus of the present invention, the lighting device is disposed on the outer side in the vehicle width direction of the front load receiving stand in the base load receiving stand, so that not only during traveling but also during work using the load receiving stand. A passerby or the like can easily see the lighting device. And since the said light fixture is installed in the base load receiving stand which is a member which has stopped at the time of deployment / folding of the load receiving stand, the wiring for the lighting device is disconnected by the operation of unfolding / folding the load receiving stand. There is no.

  It is preferable that at least a part of the lighting device is disposed on the base load receiving base so as to protrude above the floor surface of the load box at the highest position of the load receiving base. According to this configuration, the lighting device can also be used as a function as a restricting portion that prevents the cart from falling.

  According to the load receiving table elevating device of the present invention, the lighting device can be easily visually recognized even during work using the load receiving stand.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a load receiving table lifting apparatus of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a side view of a load receiving table lifting apparatus according to an embodiment of the present invention, and is a side explanatory view showing a state stored in a lower rear part of the vehicle, and FIG. 2 is a side view showing a state in which the load receiving stand is also raised. FIG. 3 is an explanatory side view showing a state in which the load receiving stand is completely unfolded and is along the ground.

1 to 3, reference numeral 1 denotes a cargo box mounted on a chassis frame 2 of the vehicle, and a retractable load receiving table lifting device L is attached below the rear end of the cargo box 1. A subframe 40 for reinforcing the cargo box 1 is disposed on the lower surface of the cargo box 1, and the subframe 40 is disposed so as to overlap the chassis frame 2.
The load receiving table elevating device L includes an attachment member 3 disposed on the chassis frame 2 and a load receiving stand 5 connected to the attachment member 3 via a link mechanism 4. Reference numeral 30 denotes a switch box in which an operation switch, a control circuit, and the like of the load receiving table lifting device L are accommodated, and is provided only on the left side of the vehicle body. The switch box 30 is fixed to a second support plate 32 described later, and protrudes most outward in the vehicle width direction.

  The attachment member 3 includes a first support plate 31 and a second support plate 32. A first support plate 31 disposed adjacent to a guide rail 6 to be described later is engaged with the guide rail 6 via a sliding member (not shown) such as a pad, and along the guide rail 6. It can slide. The first support plates 31 provided on the left and right sides (both side surfaces) of the vehicle body are welded to the outer peripheral portion of a rectangular cylindrical connecting pipe 33 that is horizontally arranged in the width direction of the vehicle body. The second support plate 32 is extrapolated to the connection pipe 33 and welded to the outer periphery of the connection pipe 33 at a predetermined position outside the first support plate 31 in the vehicle body width direction. Accordingly, the pair of left and right first support plates 31 and second support plates 32 and the connection pipe 33 constitute a structurally integral mounting member 3.

  An outwardly U-shaped guide rail 6 is disposed at the rear end portion of the chassis frame 2 in the vehicle front-rear direction. As described above, the mounting member 3 extends along the guide rail 6. It is slidable in the vehicle longitudinal direction. More specifically, an angle-shaped fixing member 8 for fixing the load receiving table elevating device L to the vehicle body is vertically attached to each of both side surfaces of the chassis frame 2 behind the rear wheel (not shown). The guide rail 6 made of I-shaped steel is fixed horizontally to the fixing member 8. The mounting member 3 is slid along the guide rail 6 by an expansion / contraction operation of a hydraulic cylinder (slide cylinder) 41 so that the load receiving platform 5 is slidable back and forth below the floor surface of the cargo box 1.

The link mechanism 4 is mainly composed of an upper arm 9 and a lower arm 10 that forms a parallel link with the upper arm 9, and the base ends of the arms 9, 10 are turned to the mounting member 3 side. While being pivotally supported, it is configured to be pivotable up and down by a hydraulic cylinder (lift cylinder) 11 as lifting means connected to the upper arm 9 and the mounting member 3.
The guide rail 6, the mounting member 3, the link mechanism 4, and the lift cylinder 11 are provided on the left and right sides of the chassis frame 2 so that the left and right mounting members 3 slide on the guide rail 6 in synchronization. Are connected by the connecting pipe 33.

  The load receiving platform 5 includes a base load receiving platform 51 and a front load receiving platform 52. The front load receiving platform 52 further includes an intermediate load receiving platform 52a on the base load receiving platform 51 side and the most distal side when deployed. And the foremost part receiving platform 52b. The intermediate part receiving platform 52a is provided so as to be foldable above the base receiving platform 51 via a hinge with respect to the base receiving platform 51, and the foremost part receiving platform 52b is connected to the intermediate receiving platform 52a. And is foldable via a hinge (under the intermediate part receiving platform 52a in the retracted state). That is, the load receiving stand 5 in the present embodiment is a tri-fold type load receiving stand, and is entirely folded in the folded state in the storage state shown in FIG.

  And the front-end | tip part of the said upper arm 9 and the lower arm 10 is pivotally supported by the base load receiving stand 51 in the load receiving stand 5. As shown in FIG. More specifically, the tip of the upper arm 9 is pivotally supported on the upper part of the base load receiving platform 51, and the tip of the lower arm 10 is pivotally supported on the lower portion of the base load receiving platform 51.

  In the load receiving table elevating device L configured as described above, a retracted state in which the mounting member 3 is slid to the front end portion of the guide rail 6 and stored with the load receiving table 5 folded by the expansion and contraction operation of the slide cylinder 41 (FIG. 1). Reference) and a state in which the mounting member 3 is slid to the rear end portion of the guide rail 6 can be realized although illustration is omitted. The slide cylinder 41 has its telescopic rod connected to the load box 1 on the fixed side, and the base end of the cylinder body is connected to the load receiving platform 5 side on the slide side. The slide cylinder 41 is in a retracted state at the retracted position shown in FIG. 1 and is brought into a state in which the load receiving platform 5 side is slid to the rear end portion of the guide rail 6 by being extended.

  Then, in a state where the mounting member 3 is slid to the rear end portion of the guide rail 6, the upper arm 9 and the lower arm 10 are rotated in the clockwise direction by contracting the lift cylinder 11, as shown in FIG. Will stand up. From this state, the operator manually raises and further rotates the load receiving platform 5 to fall on the ground. Furthermore, a state in which a load receiving surface of a predetermined size is configured by placing a hand on the tip of the frontmost load receiving platform 52b while releasing a lock mechanism (not shown) and deploying it, can load a load. It becomes. In FIG. 3, reference numerals 20 and 21 denote contact plates made of an elastic material such as rubber, which serve as cushions between the ground and the load receiving table 5 and play a role of stabilizing the load receiving table 5. Reference numeral 22 denotes a reinforcing member for reinforcing the intermediate part receiving platform 52a and the foremost part receiving platform 52b.

  When the load is placed on the load receiving platform 5, the lift cylinder 11 is extended and raised to a height matching the floor surface of the load box 1 while keeping the load receiving platform 5 horizontal.

  In the load receiving platform lifting / lowering apparatus L according to the present embodiment, the front load receiving platform 52 is narrower than the base load receiving platform 51 in the width direction of the vehicle body, and the front load receiving platform 52 in the base load receiving platform 51 is used. In the vehicle width direction outer side portion, a restricting portion 60 that protrudes upward from the floor surface of the cargo box 1 is provided at the highest position of the load receiving stand. And the lamp | ramp 13 which consists of the tail lamp and the brake lamp 13a, the direction indicator 13b, and the reverse lamp 13c is arrange | positioned at the both ends of the base load receiving stand 51 which comprises this control part 60. FIG. More specifically, the lamp 13 is embedded in both end portions of the base load receiving base 51 so that the rear end surface 51 a of the base load receiving base 51 in the deployed state and the display surface of the lamp 13 are flush with each other.

  Thus, by arranging the lighting device 13 on the outer side in the vehicle width direction of the front load receiving table 52 in the base load receiving table 51, a passerby can be used not only during traveling but also during work using the load receiving table. Etc. can easily see the lighting device 13. And since the said lighting device 13 is installed in the base receiving stand 51 which is a member which has stopped at the time of expansion | deployment / folding of the load receiving stand 5, wiring for a lighting device is carried out by operation | movement of the said receiving stand 5 expansion / folding Will not break. In FIG. 4 and FIG. 5 to be described later, reference numeral 61 denotes a stopper provided at the front part of the foremost part load receiving table 52b so as to be raised and lowered, and protrudes from the load receiving surface while the load receiving table 5 is raised and lowered. Is prevented from falling from the receiving platform 5.

  FIG. 5 is a perspective explanatory view of a lighting device and a load receiving table in another embodiment of the load receiving platform lifting apparatus of the present invention. In this embodiment, the base load receiving located on the outer side in the width direction of the front load receiving stand 52 is shown. The lamp 13 is disposed on the upper surface of the table 51. Since this lighting device 13 is disposed on the base load receiving base 51 so as to protrude above the floor surface of the cargo box 1 at the highest position of the load receiving stand, the restriction as shown in FIG. It also has a function as the unit 60. In addition, the lighting device 13 has, for example, a step difference in which the upper surface is lower than the floor surface in the vicinity of both ends of the base load receiving platform 51 in addition to protruding the whole upward from the floor surface of the cargo box 1 as in the present embodiment. A part (not shown) may be formed, and a part of the lamp 13 may be protruded from the floor surface, for example, by disposing the lamp 13 at the step. Moreover, although the width | variety of the lighting device 13 and the width | variety of the part (part from the side edge of the front part receiving stand 52 to the end of a packing box) where a control part is required are substantially the same, It can also be made narrower than the width of the portion where the restricting portion is required. At that time, by providing a protruding portion having the same height as the lighting device 13 on the base load receiving stand 51 so as to be adjacent to the lighting device 13, it is possible to configure a regulating portion having a necessary width. In this case, the lighting device 13 constitutes a part of the restricting portion.

  In addition, this invention is not limited to embodiment mentioned above, A various aspect can be employ | adopted. For example, the load receiving platform is not limited to a three-fold type, and may be a two-fold type. Further, the shape and structure of the lighting device are not particularly limited, and those used in the vehicle can be used.

  Furthermore, the drive mechanism and auxiliary mechanism such as a link mechanism, a slide means, and an elevating means for storing and unfolding the load receiving platform can be used by appropriately combining known configurations, and is particularly limited in the present invention. is not.

It is one Embodiment of the cargo receiving stand raising / lowering apparatus of this invention, Comprising: It is side explanatory drawing which shows the state stored in the vehicle back lower part. FIG. 2 is an explanatory side view showing a state in which the load receiving stand stands in the load receiving stand lifting device shown in FIG. 1. FIG. 2 is an explanatory side view showing a state in which the load receiving platform is fully deployed and is along the ground in the load receiving platform lifting device shown in FIG. 1. It is a perspective explanatory view of the lighting device and the load receiving table in the load receiving table lifting device shown in FIG. It is an isometric view explanatory drawing of the lighting fixture and load receiving stand in other embodiment of the load receiving stand raising / lowering apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packing box 2 Chassis frame 3 Mounting member 4 Link mechanism 5 Load receiving stand 6 Guide rail 9 Upper arm 10 Lower arm 11 Lift cylinder 13 Lighting device 41 Slide cylinder 51 Base load receiving stand 52 Front receiving stand 52a Middle part receiving stand 52b The earliest Part loading platform L Loading platform lifting device

Claims (2)

A load receiving base lifting device that includes a base load receiving table and a front load receiving table that is foldably connected to the base load receiving table;
The leading part cradle is narrower than the base cradle in the width direction of the vehicle body;
A restricting portion that protrudes upward from the floor surface of the cargo box mounted on the vehicle body is provided at an outer portion in the vehicle width direction of the front load receiving table in the base load receiving table at the highest position of the load receiving table. And a light receiving device lifting / lowering device, wherein the lighting device is disposed on the outer side in the vehicle width direction of the front load receiving table in the base load receiving table.   2. The lifting / lowering of the loading platform according to claim 1, wherein at least a part of the lighting device is disposed on the base loading platform so as to protrude above the floor surface of the loading box at the highest lifting position of the loading platform. apparatus.

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