JPH0650466Y2 - Horizontal shock absorber for table lifting device - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention puts a load on a table of a table lifting device and then raises the table at the same height as the bed of the truck to move the truck back. The present invention relates to a horizontal shock absorber for a table lifting device, which prevents the table lifting device from receiving an impact even when the bed of the truck hits the table of the table lifting device.

(Prior Art) Conventionally, a table elevating device is often used for loading and unloading luggage to and from warehouses and trucks.

(Problems to be solved by the invention) In particular, in this case, when loading or unloading luggage from the truck, when the truck is moved back, the bed of the truck may hit the table and break the table or the lifting device. It takes a considerable amount of skill to bring the truck bed closer to the table so as not to hit it, and as a result, in many cases the loading load of the luggage with a considerable distance between the bed and the table. There is a drawback in that not only the work efficiency of loading and unloading must be considerably reduced, but also the work is considerably dangerous.

Therefore, it is an object of the present invention to provide a horizontal shock absorber for a table lifting device, which allows the work to proceed as it is without damaging the table and the lifting device even if the truck bed hits the table.

(Means for Solving the Problem) The present invention relates to a table lifting device that vertically reciprocates a table via an actuator-driven lifting device.
In order to absorb a horizontal impact force applied to at least one side of the table, the table is mounted so as to be movable in the impact force direction against an elastic force, and a horizontal impact absorber for a table lifting device. It is in.

(Operation) In the horizontal shock absorber for the table lifting device configured as described above, when the table of the table lifting device loaded with luggage is raised to the same height as the bed of the truck and then the truck is moved back Even if the loading platform of the truck hits the table of the table lifting device, the table moves in the direction of the impact force of the loading platform against the elastic force and stops.

(Effects of the Invention) As a result, according to the present invention, even if the loading platform of the truck hits the table of the table lifting device, the table lifting device can be loaded as it is without impact, and the loading platform can be further advanced. Since there is no gap between the table and the table, there is an effect that the work can proceed more safely.

(Embodiment) Next, a configuration of an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2 in which the left-right direction in the drawing is the front-back direction, the longitudinal center positions of the two arms 3 and 4 can be rotated via a pin 5 between the base frame 1 and the table 2. A pair of left and right X-shaped lift arms 6 mounted on the base 3 are rotatably attached to the base frame 1 via a support shaft 7, and the other end of the arm 3 and both ends of the arm 4 serve as rollers 8. The guide rail 9, in this case, a combination of the base frame 1 and the C-channel guide rail 9 formed on the table 2 is attached so as to be reciprocally movable along the surfaces of the base frame 1 and the table 2, and the arms 3 and 4 are attached. Between the two ends of the actuator, that is, the cylinder body 11 and the end of the piston rod 12 are articulated via pins 13 between the actuator and the hydraulic cylinder 10, and the table 2 of the arm 4 is attached.
A coil spring 14 for moving the table 2 forward (to the right in the drawing) is attached between the side end portion and the table 2, and the table 2 can be moved forward (to the right in the drawing) by the coil spring 14. A stopper 15 for stopping at a position where the elastic force of 2 does not fluctuate is attached, and when the roller 8 is in contact with the stopper 15, the table 2 is stopped. It is detected by abutting and turning on.

Next, the operation of this embodiment will be described.

In this way, when the table elevating / lowering device 18 with the horizontal impact absorbing device 17 that can slide the table 2 against the urging force of the coil spring 14 is in the lowered state, after loading the load on the table 2, the lifting foot not shown is shown. When the switch is turned on, the piston rod 12 of the hydraulic cylinder 10 advances and the pair of left and right X-shaped lift arms 6 rises from the folded state as shown in FIG. When the raising foot switch is turned off at the time when the height becomes the same height as the loading platform 20 of the luggage loading truck 19, the table 2 stops at the turning off time and the table 2 is turned upside down in this raised and stopped state. Since the external force in the biasing force direction of the coil spring 14 is not applied, the table 2 is in a stopped state in which the roller 8 is in contact with the stopper 15 (solid line state in FIGS. 1 and 2). .

Next, in this state, when the truck 19 is moved back so as to approach the front end of the table 2, even if the loading platform 20 of the truck 19 hits the table 2 of the table lifting device 18, the table 2 is impacted by the loading platform 20. It moves in the force direction against the elastic force (the state of the two-dot chain line in FIGS. 1 and 2) and stops.

As a result, even if the loading platform 20 of the truck 19 hits the table 2 of the table lifting / lowering device 18, the table lifting / lowering device 18 is not impacted and the loading operation of the load can proceed as it is. Since there is no gap between them, the work can be carried out more safely, and the truck 19 moves up and down the table when the luggage is loaded.
When the table 2 is separated from the table 2 at 18, the table 2 slides in the direction of the urging force by the coil spring 14 and stops in the returning state in which the roller 8 is in contact with the stopper 15. In this stopped state, the limit switch 16 moves the roller 8 It is detected by the contact and turning on.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention, and FIG. 2 is a detailed view of essential parts thereof. 1 ... Base frame, 2 ... Table, 6 ... Lift arm, 8 ... Roller, 9 ... Guide rail, 10 ... Hydraulic cylinder, 14 ... Coil spring, 15 ... Stopper, 17 ... Horizontal shock absorber 18 …… Table lifting device

Claims (1)

[Scope of utility model registration request] 1. A table elevating device for vertically reciprocating a table via an actuator-driven elevating device, wherein the table is moved in the direction of the impact force in order to absorb a horizontal impact force applied to at least one side of the table. A horizontal shock absorber for a table lifting device, which is mounted so as to be movable against elastic force.