JPH05116896A - Passing-through lift - Google Patents

Abstract

PURPOSE:To reciprocate a table up and down without forming a distance between the end of the table and the end of a truck loading platform or the like. CONSTITUTION:There is provided, at the right and left ends of a table formed into a roughly recessed shape, a separate hydraulic cylinder-driven type lift device with an arm connected in an X form, and in the upper end of one arm connected with a crossing shaft in an X shape and the table, a passing-through lift 13 is connected to the table 1 so that its sliding may be driven through a hydraulic cylinder 8 or an auxiliary rod, and the position of a crossing shaft 7 is shifted to the lower frame side from a real intersection which connects the axial center of both the arm ends.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift for vertically moving a table driven by a hydraulic cylinder. In this case, the present invention relates to a lift in which a dolly of a lifted object, for example, a load is placed on the table from one of the front and the rear thereof, and after the lifting operation, the trolley is loaded from the other side of the table to the bed of the truck while passing through the table.

[0002]

2. Description of the Related Art Conventionally, two lift devices are used to support one table and the central portion of the table is dented between the two lift devices so that the two lift devices are at the lowest position. The dented surface of the truck is located on the ground surface with virtually no step, facilitating the loading and unloading work of the load on the table, and allowing the load to pass from one side of the table to the other side of the truck. It can be loaded and unloaded with a loading platform.

[0003]

In this case, in the actual work, the end face of the table and the end face of the truck bed cannot be abutted against each other, and a space of about 10 to 20 cm is inevitable. Therefore, there is a drawback in that it is necessary to attach a slide device separately or the operator needs to move it with care.

Therefore, an object of the present invention is to allow the table to be moved up and down without leaving a space that hinders the work between the end surface of the table and the end surface of a table for moving luggage such as a truck bed. To provide a lift.

[0005]

That is, according to the present invention, a table for moving up and down within a preset arbitrary height range is formed in a substantially concave shape with its central portion lower than its left and right end portions, and the left and right end portions of the table are formed. At each position, a hydraulic cylinder drive type lifting device for an X-shaped arm that independently supports the table at the left and right ends so as to be vertically movable is provided, and a roller is provided at the upper end of the X-shaped arm. The table is slidably attached via a table, and one upper end of an arm connected to the X-shaped cross shaft is connected to the table via a hydraulic cylinder so that the table can be slidably driven. The lower part of one end of both lift devices in the front-rear direction located at is connected so that the lift devices cannot move in the left-right direction,
There is a through lift in which the lower ends of the arms of both lift devices rotatably attached to the shafts fixed to the lower frames of both lift devices at one end position in the front-rear direction of the both lift devices are integrally connected by a reinforcing pipe. In this case, the position of the intersecting shaft of the X-shaped arm that constitutes the lifting device is shifted to the lower frame side from the true intersection that connects the rollers of both arm ends and the center of the shaft fixed to the lower frame. be able to. Further, in the passing lift, one upper end of the arm connected to the X-shaped cross shaft is connected to the table via the hydraulic cylinder so that the table can be slid, but instead of this, it is connected to the X-shaped. It is also possible to connect one of the arms and the table via an auxiliary rod so that the table can be slidably driven in one of the front and rear directions of the lifting device when the table is raised. In this case, similarly to the above, the position of the intersecting axis of the X-shaped arm that constitutes the lifting device is shifted to the lower frame side from the true intersection that connects the rollers of both arm ends and the center of the axis fixed to the lower frame. Can be positioned.

[0006]

When the hydraulic cylinder of the lift device is moved backward in the pass-through lift configured as described above, X
The arms connected in the shape of a letter are in a folded state, and the lower surface of the table, which is formed in a substantially concave shape, contacts the floor surface, and the table is substantially flush with the floor surface, making it easy to load luggage from the floor surface In this case, particularly, in this case, the position of the intersecting axis of the X-shaped arm is set to the lower frame side from the true intersection connecting the rollers of both arm ends and the center of the axis fixed to the lower frame. If they are displaced, the overall height of the lifting device on both the left and right sides of the table can be reduced, and as a result, the height of the left and right positions of the substantially concave table can be reduced, greatly improving workability. You can

Next, when the hydraulic cylinder of the lift device is moved forward from this lowest position, the X-shaped connected arms extend in the X-shape from the folded state, the table surface rises, and the table surface rises. The forward movement of the hydraulic cylinder is stopped in a state where it coincides with the bed of the truck. In this state, in the case of a lift device which does not have an auxiliary rod between the X-shaped arm and the table, the table rises vertically, so there is a considerable distance between the table end surface and the truck bed end surface. , The table is slid to the loading platform side of the truck through a hydraulic cylinder attached between the X-shaped arm and the table, so that the table end face is easily brought into contact with the loading platform end face of the truck, and between the table and the loading platform of the truck. It is possible to smoothly move the luggage.

On the other hand, in the case of a lift device in which an auxiliary rod is attached between the X-shaped arm and the table in place of the hydraulic cylinder, the table does not rise vertically, and when the table is raised, the table moves in the front-back direction of the lift device. In this case, since the table slides toward the cargo bed side, the table end surface automatically comes into contact with the truck cargo bed end surface, and the work of moving the load between the table and the truck cargo bed can be performed smoothly.

[0009]

As a result, according to the present invention, the table is moved up and down without leaving a space that hinders the work between the end surface of the table and the end surface of the table for moving the load such as the truck bed. There is an effect that the work of moving luggage between the table and the bed of the truck can be smoothly performed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the construction of the first embodiment of the present invention will be explained with reference to FIGS. The table 1 that moves up and down within a preset height range corresponding to loading and unloading of luggage is
The central part is formed in a substantially concave shape lower than the left and right ends,
At the left and right ends of the table 1, lift devices 2 that support the table 1 so that the left and right ends can independently move up and down,
In this case, a lift device 2 for driving the hydraulic cylinders 5 is attached, which rotates the arms 3 and 4 connected in an X shape by the hydraulic cylinders 5 and, as a result, vertically displaces them.

That is, the table 1 is slidably mounted on the upper ends of the arms 3 and 4 connected in an X shape via rollers 6, and the arms 3 and 4 connected by an intersecting shaft 7 in an X shape.
One upper end of the table 1 and the table 1 are connected to each other via a hydraulic cylinder 8 so that the table 1 can be slidably driven. Both lift devices 2 are movably connected to each other via a shaft so as not to move in the left-right direction, and rotatably attached to a shaft 11 fixed to a lower frame 10 of both lift devices 2 at one end position in the front-rear direction of both lift devices 2. The lower end of one arm 3 of the device 2 is integrally connected by a reinforcing pipe 12, and in this case, the position of the cross shaft 7 of the X-shaped arms 3 and 4 constituting the lift device 2 is such that both arms 3, 4 rollers 6 and lower frame 1
It is positioned so as to be displaced toward the lower frame 10 side from the true intersection connecting the centers of the shafts 11 fixed to 0.

Next, the operation of this embodiment will be described.
When the hydraulic cylinder 5 of the lift device 2 is retracted in the pass-through lift 13 configured as described above, the arms 3 and 4 connected in the X shape are folded and the lower surface of the table 1 formed in a substantially concave shape. Comes into contact with the floor surface, and the table 1 becomes substantially flush with the floor surface so that the load can be easily moved from the floor surface onto the table 1. In this case, in particular, the X-shaped arm 3, The position of the crossing shaft 7 of 4 is set so that the arms 3 and the rollers 6 at the ends and the lower frame 1
Since it is positioned so as to be shifted to the lower frame 10 side from the true intersection connecting the centers of the shafts 11 fixed to 0, the table 1
The height of the entire lifting device 2 on both the left and right sides can be reduced, and as a result, the height of the left and right positions of the table 1 formed in a substantially concave shape can be lowered, and the efficiency of moving work including loading and unloading of luggage can be significantly improved. be able to.

Next, when the hydraulic cylinder 5 of the lift device 2 is moved forward from this lowest position, the arms 3 and 4 connected in the X shape extend from the folded state to the X shape, and the table 1 rises. At the same time, the forward movement of the hydraulic cylinder 5 is stopped in a state where the upper surface of the table 1 is aligned with the bed of the truck. In this state, since the table 1 rises vertically, there is a certain distance between the end surface of the table 1 and the end surface of the truck bed, but the hydraulic cylinder 8 mounted between the X-shaped arm 3 and the table 1 is provided. By sliding the table 1 to the cargo bed side of the truck via the table, the end surface of the table 1 can be easily brought into contact with the cargo bed end surface of the truck, and the luggage can be smoothly moved between the table 1 and the cargo bed of the truck.

Next, FIGS. 5 and 6 show a slip-off lift 14 according to the second embodiment of the present invention, in this case, a hydraulic cylinder between the X-shaped arm 4 and the table 1 in the first embodiment. In place of 8, the auxiliary rod 15 is attached so that when the table 1 is lifted,
In this case, the end face of the table 1 is automatically brought into contact with the end face of the truck as the table 1 is lifted up so as to slide toward the bottom face of the truck, and the work of moving the load between the table 1 and the bottom of the truck is smoothly performed. The configuration, action, and effect are almost the same as those of the first embodiment except that the operation can be performed.

[Brief description of drawings]

FIG. 1 is a front view of a through lift 13 according to a first embodiment.

FIG. 2 is a plan view of a pass-through lift 13 in the first embodiment.

FIG. 3 is a left side view of the pass-through lift 13 in the first embodiment.

FIG. 4 is a fragmentary front view of a through lift 13 according to the first embodiment.

FIG. 5 is a front view of a through lift 14 according to a second embodiment.

FIG. 6 is an explanatory diagram showing an operating state of the pass-through lift 14 in the second embodiment.

[Explanation of symbols]

 1 Table 2 Lifting Device 3 Arm 4 Arm 5 Hydraulic Cylinder 6 Roller 7 Cross Shaft 8 Hydraulic Cylinder 9 Connecting Frame 10 Lower Frame 11 Shaft 12 Reinforcing Pipe 13 Pass-through Lift 14 Pass-through Lift 15 Auxiliary Rod

Claims (4)

[Claims] 1. A table for moving up and down within a preset arbitrary height range is formed in a substantially concave shape whose central portion is lower than its left and right end portions, and is independently located at the left and right end portions of the table. And a hydraulic cylinder drive type lift device of an X-shaped connected arm for supporting the table so that the table can be moved up and down, and the table is slidably attached to the upper end of the X-shaped connected arm via a roller. , One end of an arm connected to the X-shaped cross shaft and the table are connected via a hydraulic cylinder so that the table can be slidably driven, and further one end of both lift devices in the front-rear direction located at both left and right ends of the table. The lower parts of the lift devices are connected to each other so that they cannot move in the left-right direction, and are rotatably mounted on the shafts fixed to the lower frames of both lift devices at one end position in the front-rear direction of both lift devices. A through lift, characterized in that the lower ends of the arms of both lifted lift devices are integrally connected by a reinforcing pipe. 2. The lower frame according to claim 1, wherein the position of the intersecting shaft of the X-shaped arms constituting the lifting device is a true intersection that connects the respective rollers at the ends of both arms and the center of the shaft fixed to the lower frame. A through lift characterized by being positioned to the side. 3. A table, which is moved up and down within a preset arbitrary height range, is formed in a substantially concave shape with its center portion lower than its left and right end portions, and is independently provided at the left and right end portions of the table. And a hydraulic cylinder drive type lift device of arms connected to each other by an X-shaped cross shaft for supporting the table so that the table can be moved up and down, and the table is slid on the upper end of the arms connected to the X-shaped via a roller. One of the arms, which is movably attached and connected in an X shape, and the table are connected via an auxiliary rod so that the table can be slidably driven in one of the front and rear directions of the lifting device when the table is raised. The lower parts of the one end of the two lifting devices in the front-rear direction are connected to each other so that they cannot move in the left-right direction, and the lower parts of the two lifting devices at the one-end position of the two lifting devices in the front-rear direction A pass-through lift characterized in that the lower ends of the arms of both lift devices rotatably mounted on a shaft fixed to a frame are integrally connected by a reinforcing pipe. 4. The lower frame according to claim 3, wherein the position of the intersecting shaft of the X-shaped arms constituting the lifting device is a true intersection that connects the respective rollers at both arm ends and the center of the shaft fixed to the lower frame. A through lift characterized by being positioned to the side.