JP3110170U - Loading platform lifting device - Google Patents

Abstract

[PROBLEMS] To automatically place a transition board in the gap between the base end of the loading platform and the rear end of the floor surface of the loading platform, eliminating the need for complicated work of spanning the transition board and effectively using the space of the loading platform. Provided is a load receiving platform lifting device.
In a load receiving platform lifting apparatus 2 in which a load receiving platform 5 is provided so as to be movable up and down via a link mechanism 4 having two upper and lower upper links 42 and a lower link 41, the load receiving platform 5 is provided at the base end of the load receiving platform 5. Is provided with a plate 7 that can be opened and closed up and down, and when the load receiving platform 5 reaches the raised position, does the plate 7 form the substantially same plane as the upper surface of the load receiving platform 5 to exhibit the load receiving platform function? Alternatively, the bridge plate function between the loading platform 1 and the loading platform 5 is exhibited, and when the loading platform 5 is lowered, the contact portion 43 of the upper link 42 is brought into contact with the lower side to stand up with respect to the loading platform 5. It is comprised so that it may arrange | position in the state inclined in the direction.
[Selection] Figure 1

Description

  TECHNICAL FIELD The present invention relates to a load receiving platform lifting device in which a load receiving platform is provided so as to be movable up and down via a link mechanism. It is related with the structure of the board | plate material which has a bridge board function for filling the clearance gap between the base end of this and the floor surface rear end of a loading platform.

  Conventionally, for example, in a vehicle in which the rear surface of the cargo box is openable and closable by a double door, when the load receiving platform lifting device is provided behind the rear surface of the cargo box, the cargo receiving platform of the cargo receiving platform lifting device is placed on the rear surface of the cargo box. It is common to stand up and store along. For this reason, in order to avoid interference with the door locking device when the load receiving table is stored, a gap is provided between the load receiving table and the rear surface of the packing box.

  Therefore, when the load receiving platform is raised to the floor surface of the cargo box, the base end of the load receiving platform and the rear end of the floor surface of the cargo box are separated from each other by the amount corresponding to the gap. Conventionally, a crossover plate (plate material) is passed between the base end of the load receiving table and the rear end of the floor surface of the load box in order to cause trouble.

Specifically, a transition board is provided at the rear end of the floor of the cargo box so as to be pivotable in the front-rear direction, and when the cargo cradle is raised, the transition board is pivoted rearward from the rear edge of the cargo box. By passing over the end, the load can be smoothly moved through the bridge plate (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 5-74983

  However, as in the prior art, there is a problem that it takes time and labor for the operator to transfer the crossing board during loading and unloading work. In addition, in order to be able to use the transition board, it is necessary not to leave the load on the transition board, and the rear end portion of the cargo box provided with the transition board becomes a dead space where the cargo cannot be placed. There was a problem.

  To achieve the above object, a load receiving platform lifting apparatus according to the first aspect of the present invention is a load receiving platform in which a load receiving platform is provided so as to be lifted and lowered via a link mechanism having two upper and lower upper links and a lower link. In the lifting device, a base plate that can be moved up and down is provided at the base end of the load receiving platform, and the plate material forms a substantially same plane as the upper surface of the load receiving platform when the load receiving platform reaches the raised position. If the load carrier is lowered, the abutment part of the upper link comes into contact with the load carrier from below when the load carrier is lowered. And arranged so as to be inclined in the direction of standing up.

  According to the present invention, when the cargo cradle reaches the raised position, the plate material is formed substantially in the same plane as the upper surface of the cargo cradle to exert the function of the cargo cradle or between the cargo bed and the cargo cradle. In addition to demonstrating the bridge plate function, when the load receiving table is lowered, the plate material is placed upright with respect to the load receiving table, so that this plate material is placed in the gap between the base end of the load receiving table and the rear end of the floor of the loading table. It can be automatically arranged, and it is not necessary to have the troublesome work of handing over the crossing boards as before, and it is not necessary to provide the crossing board on the side of the loading platform, so the space on the loading platform can be used effectively. it can.

  In addition, when the load receiving platform is lowered to the ground, the plate material can be used as a stopper to prevent the movement of the wheels of the carriage, etc. by being arranged in a state where the plate material is tilted in the standing direction. There is no need to provide a new stopper, and a single plate material can be used functionally.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a load receiving table lifting device of the present invention.

  In FIG. 1, reference numeral 1 denotes a box-shaped cargo box (loading platform) mounted on a vehicle frame 11, and a cargo receiving platform lifting device 2 is provided below the rear surface of the cargo box 1.

  Although not shown, the rear surface of the packing box 1 can be freely opened and closed by a double door.

  In the load receiving platform lifting / lowering device 2, a load receiving platform 5 is provided on an attachment member 3 fixed to a vehicle frame 11 via a link mechanism 4 so as to be movable up and down.

  The link mechanism 4 includes a lower link 41 and an upper link 42. The lower link 41 has a base end portion pivotally supported by a pivot 41 a in the middle of the mounting member 3, and a distal end pivoted by a pivot 41 b below a bracket 51 provided at the base end portion of the load receiving platform 5. It is supported. The upper link 42 has a base end portion pivotally supported on the upper portion of the mounting member 3 by a pivot 42 a and a distal end portion pivotally supported on the bracket 51 by a pivot 42 b.

  On the other hand, a lift cylinder 6 is connected to the mounting member 3 and the upper link 42 near the distal ends. The lift cylinder 6 is for rotating the upper link 42 up and down by its expansion and contraction operation. As the upper link 42 rotates, the lower link 41 also rotates in the vertical direction. By rotating the link 41, the load receiving platform 5 can be moved up and down while maintaining the horizontal state.

  As described above, the front end of the upper link 42 and the lower link 41 is pivotally supported at the base end of the load receiving platform 5 via the bracket 51, and the pivot 42b from the horizontal state shown in FIG. It is designed to be able to stand up by turning upward.

  Further, the tip of the load receiving platform 5 is formed in a wedge shape, and when the load receiving platform 5 reaches the ground, it tilts as shown by a two-dot chain line in FIG. It is made like that.

  Here, a plate material 7 is provided at the base end of the load receiving platform 5. The plate member 7 forms the substantially same plane as the upper surface of the load receiving table 5 to exhibit the load receiving function when the load receiving table 5 is arranged at the raised position, or the floor surface rear end of the load box 1 and the load receiving table. In order to exhibit a bridge plate function that fills a gap generated between the base end of the plate 5 and the bridge plate, the bridge plate function is formed to have a length corresponding to the gap.

  Specifically, as shown in FIG. 2, one end portion of the plate material 7 is connected to the base end of the load receiving platform 5 by a hinge 71, and the horizontal position arranged on the same plane as the upper surface of the load receiving platform 5 It is provided so as to be able to stand obliquely above the receiving platform 5.

  Further, as shown in FIG. 2, when the upper link 42 is rotated downward, the upper link 42 is brought into contact with the lower surface of the plate member 7 so that the plate member 7 is rotated upward to stand up. The contact portion 43 is provided.

  That is, due to the relative movement of the pivoting movement of the upper link 42 and the raising / lowering movement of the load receiving platform 5, when the load receiving platform 5 is in the raised position, the contact portion 43 is separated downward from the plate material 7 and the plate 7 is When the load receiving platform 5 reaches the ground, the contact portion 43 comes into contact with the plate material 7 and pivots upward when the load receiving platform 5 reaches the ground, so that the plate material 7 stands up with respect to the upper surface of the load receiving table 5. It is placed in a standing position that is inclined in the direction of the movement.

  Further, a stopper 52 for preventing the movement of a wheel such as a carriage is provided at the top end of the upper surface of the cargo receiving stand 5 so as to be able to stand up.

  Next, the operation of the load receiving table lifting apparatus configured as described above will be described.

  First, when the lift cylinder 6 is expanded and contracted in a state where the load receiving base 5 is horizontally disposed, the upper link 42 and the lower link 41 are rotated up and down, and the action of the link mechanism causes the load receiving base 5 to be in the horizontal state. Is moved up and down between the ground and the floor of the packing box 1.

  At this time, when the load receiving platform 5 is in the raised position that is substantially the same height as the floor surface of the cargo box 1, the contact portion 43 of the upper link 42 is retracted below the plate member 7 as indicated by a one-dot chain line in FIG. Therefore, the plate material 7 is disposed so as to extend horizontally forward from the base end of the load receiving platform 5, and thereby a gap generated between the base end of the load receiving platform 5 and the rear end of the floor surface of the cargo box 1. Buried. Therefore, the cargo can be smoothly moved between the cargo receiving platform 5 and the floor surface of the cargo box 1 using a cart or the like.

  Further, when the load receiving platform 5 is lowered from the raised position by retracting the lift cylinder 6, the upper link 42 is inclined downward when the load receiving platform 5 reaches the vicinity of the ground. It contacts the lower surface of the. Then, as the load receiving platform 5 further descends, the contact member 43 rotates the plate material 7 around the hinge 71, and when the load receiving platform 5 reaches the ground, the plate material 7 is brought into contact with the contact portion 43. Are arranged in an upright state (see the solid line in FIG. 1).

  By placing the plate material 7 upright as described above, the plate material 7 serves as a stopper for preventing movement of the wheel of the carriage placed on the load receiving table 5.

  When the lift cylinder 6 is further retracted, the load receiving platform 5 gradually tilts and the tip of the load receiving platform 5 is grounded to the ground (see the two-dot chain line in FIG. 1). Therefore, the cargo can be smoothly moved between the ground and the receiving platform 5 through the tip using a cart or the like. At this time, the plate member 7 stands up and serves as the stopper described above.

  Further, when the load receiving platform 5 is stored, the load receiving platform 5 is turned up around the pivot axis 42b at the raised position to stand up. It arrange | positions along a rear surface and is stably secured by the securing member which is not shown in figure.

  At this time, the plate member 7 is arranged in a state of being bent with respect to the load receiving table 5 while being in contact with the contact portion 43 with the standing operation of the load receiving table 5.

  By providing the plate member 7 at the base end of the load receiving platform 5 in this way, when the load receiving platform 5 reaches the raised position and the load is moved between the load receiving platform 5 and the floor surface of the cargo box 1, the load receiving platform 5 is loaded. When it forms a part of the load receiving platform 5 and is substantially flush with the platform 5, and when the transition board function is exhibited as will be described later, the plate material 7 is located at the base end of the load receiving platform 5 and the floor surface of the load box 1. It is automatically arranged in the gap between the ends, and the cart or the like carrying the load can be moved smoothly.

  In addition, when the load receiving platform 5 is lowered to the ground, the plate material 7 stands up and serves as a stopper that prevents the movement of the wheels of the carriage, etc., so that safety can be improved and there is no need to provide a new stopper. The sheet material 7 can be used functionally.

  4 to 6 show each aspect of the plate material 7 described above.

  The plate member 7 shown in FIG. 4 has the same width as that of the load receiving platform 5, and when the load receiving platform 5 is arranged in the raised position, the base end of the load receiving platform 5 and the floor surface of the cargo box 1. It is automatically placed horizontally in the gap between the rear end and demonstrates the function of the transition board.

  On the other hand, the plate material 7 shown in FIGS. 5 and 6 is provided by cutting out a part of the base end portion of the load receiving platform 5, and the plate material 7 of FIG. 5 is provided across the left and right upper links 42. 6 is provided at two locations corresponding to the left and right upper links 42. As described above, each plate 7 receives a load when the contact portion 43 of the upper link 42 contacts from below. It arrange | positions in the state inclined in the direction which stands | stands with respect to the stand 5. Therefore, when the load receiving platform 5 is arranged at the raised position, it constitutes a part of the load receiving platform 5 and exhibits the load receiving platform function.

  Note that the above-described embodiment is merely a preferred embodiment of the present invention, and the present invention is not limited to this, and various design changes can be made within the scope thereof.

  For example, in this embodiment, the load receiving platform 5 is a so-called type of load receiving platform lifting device. Also, the plate material structure of the present invention can be applied.

It is a side view which shows the whole structure of the load receiving table raising / lowering apparatus of this invention. It is an enlarged side view which shows the structure of a board | plate material and an action | operation roller. It is a side view which shows the state which stored the receiving stand. It is a perspective view which shows the one aspect | mode of a board | plate material. It is a perspective view which shows the other aspect of a board | plate material. It is a perspective view which shows the other aspect of a board | plate material.

Explanation of symbols

1 Packing box
2 Loading platform lifting device 4 Link mechanism 41 Lower link 42 Upper link 43 Abutment portion 5 Loading platform 7 Plate material

Claims (1)

In the load receiving platform lifting device in which the load receiving platform is movably raised and lowered via a link mechanism having two upper and lower upper links and a lower link on the loading platform,
A plate material that can be opened and closed up and down is provided at the base end of the load receiving table, and the plate material forms a substantially same plane as the upper surface of the load receiving table when the load receiving table reaches the raised position. In the direction in which the abutment portion of the upper link abuts from below and stands up against the load receiving table when the load receiving table is lowered. It is comprised so that it may be arrange | positioned in the state which inclined to the goods receiving stand raising / lowering apparatus characterized by the above-mentioned.

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