JPH0430189Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a pick-up device for an unloading device that sequentially lifts and carries out cargo loaded on a pallet, etc., starting from the upper layer.

(Prior Art) Conventionally, a pick-up device of this type of unloading device, as shown in Japanese Utility Model Publication No. 47-33185, has one pick-up roller mounted on a shaft at the front of a carriage that can move forward and backward. The pick-up roller is rotated in the direction of lifting the load, and the load is transferred from the pick-up roller onto the carriage.
I'm trying to move it out.

(Problem to be solved by the invention) In the case of the above device, if sufficient frictional force acts on the contact surface between the pick-up roller and the load, the load can be lifted smoothly; Depending on the material, etc., slips may occur between the bag and the pick-up roller, making it time consuming to lift the load.

The present invention is an attempt to improve these points, and aims to ensure that cargo can be lifted.

[Structure of the idea]

(Means for Solving the Problems) The present invention provides a load unloading device that rotates a pick-up roller provided at the front of a carriage that can move forward and backward in the direction of lifting the load, and transfers the load from the pick-up roller onto the carriage. a first pick-up roller which is mounted on a shaft at a position slightly lower than the carriage at the front end of the above-mentioned carriage and rotates eccentrically; It is equipped with a second pick-up roller.

(Function) In this invention, by contacting the first pick-up roller that rotates eccentrically with the load, strong and weak lifting forces are momentarily applied to the load alternately, and when the load is in strong contact, the load is thrown up. The device is then lifted up, and then placed on the first pick-up roller and onto the second pick-up roller, and transferred onto the carriage.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In Fig. 1, reference numeral 1 denotes a frame-shaped frame that moves up and down. Sprockets 2 and 3 are mounted on the front and rear sides of this frame 1, and an endless carriage for running a carriage is mounted between the front and rear sprockets 2 and 3 on both sides. A chain 4 is spanned so as to be able to reciprocate back and forth, and a large number of carriage rollers 6 are arranged in parallel on a shaft frame to form a carriage 5 between approximately half of the lower side or upper side between the endless chains 4 on both sides. Further, as shown in FIGS. 1 and 2, a shaft 7 of the front sprocket 2 and a motor 8 provided on the frame 1 are connected via a transmission mechanism 9.

Then, the motor 8 is driven to rotate the sprocket 2 together with the shaft 7 via the transmission mechanism 9, and the endless chains 4 on both sides are rotated between the sprockets 2 and 3.
Move the carriage roller 6 forward and backward.

Further, as shown in FIGS. 1 and 4, front and rear pulleys 11 and 12 are pivoted on one rear side of the frame 1, and the front and rear pulleys 1
An endless belt 13 that contacts the upper surface of the carriage roller 6 is stretched between the carriage rollers 1 and 12. Then, one of the pulleys 11 and 12 is driven by a motor (not shown) to rotate the endless belt 13, and the carriage roller 6 in contact therewith is frictionally driven.

In addition, as shown in FIGS. 1, 2, and 3, endless chains 4 on both sides for running the carriage are also provided.
A bracket 15 is attached to the front of the carriage roller 6, and the brackets 1 on both sides
The first pick-up roller 16 and the second
A pick-up roller 17 is mounted on a shaft. The first pick-up roller 16 is mounted eccentrically with respect to its shaft 18, and is located slightly below the carriage roller 6.
The second pick-up roller 17 is placed at the same height as the carriage roller 6 by its shaft 19, and
The pickup roller 16 is disposed close to the rear of the pick-up roller 16. The first and second pick-up rollers 16 and 17 have outer skins made of a material having a large coefficient of friction, such as rubber, formed on their outer peripheral surfaces. Sprockets 20 and 21 are attached to one side of the shafts 18 and 19, and an endless chain 22 for interlocking is stretched between the sprockets 20 and 21. A driving sprocket 23 is attached to the shaft 19. It is being In addition, front and rear sprockets 24 and 25 are mounted on the upper part of the frame 1 in a position above the sprocket 23, and an endless chain 26 for driving the pick-up roller is spanned between the front and rear sprockets 24 and 25. The middle part of this endless chain 26 is the second
The sprocket 23 of the shaft 19 of the pick-up roller 17 is engaged between guide sprockets 27 and 28 which are mounted on the frame 1. Further, the shaft 29 of the rear sprocket 25 and a motor 30 provided on the frame 1 are connected via a transmission mechanism 31. Then, the motor 30 is driven to rotate the sprocket 25 together with the shaft 29 via the transmission mechanism 31, causing the endless chain 26 to rotate between the sprockets 24 and 25, and rotating the sprocket 23 meshed at the intermediate portion to rotate the sprocket 25. 21, an endless chain 22, and a sprocket 20 to rotate the first and second pick-up rollers 16, 17 together with shafts 18, 19.

In addition, in FIG. 1, 33 is a carry-out conveyor;
34 is luggage.

Next, the operation will be explained with reference to FIG.

First, as shown in FIG. 5a, the frame 1 is lowered, the uppermost load 34 on the pallet is projected upward from between the endless chains 4 on both sides, and the front surface of the load 34 is stopped by the stopper 35.

Next, the endless chains 4 on both sides are driven to move the carriage 5 to the right in FIG. The first and second pick-up rollers 16 and 17 rotate counterclockwise in FIG.
The load 34 friction-bonded by the rotation of the first pick-up roller 16 is lifted upward with respect to the first pick-up roller 16 .
A strong and weak lifting force is instantaneously applied to the object, and when the load 34 is in strong contact with the load 34, the load 34 is lifted up and immediately moved to the first pick-up roller 1.
6 onto the second pick-up roller 17, and transfer it onto the carriage 5 as shown in FIGS. 5b and 5c, and in this way, the load 34 is picked up one stage.

Next, as shown in FIG. 5d, the carriage 5 supporting one stage of the cargo 34 is moved backward, and the carriage 5 is moved up and down together with the frame 1 to be connected to the carry-out conveyor 33, and in this state, the carriage roller 6 is driven. Then, as shown in FIG. 5e, the cargo 34 on the carriage 5 is carried out onto the carry-out conveyor 33. In this way, the cargo 34 is sequentially carried out in each stage.

In the above embodiment, the carriage 5 is raised and lowered, but the carriage 5 is moved forward and backward at a constant height, and a lifting platform is provided at a lower position between the endless chains 4 on both sides, and on this lifting platform, It is also possible to raise and lower the pallet by supporting a pallet loaded with cargo in several stages.

[Effect of idea]

According to the present invention, the first
When the pick-up rollers come into contact with each other, a strong and weak lifting force acts on the load in an instantaneous manner, and when the load is in strong contact with the load, it is lifted by lifting the load, and then the load is lifted from above the first pick-up roller to the second pick-up roller. By lifting the load onto the pick-up roller and transferring it onto the carriage, the load can be lifted reliably and carried out smoothly.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the device of the present invention, Fig. 2 is a side view of the pick-up roller section thereof, Fig. 3 is a plan view of a part thereof, and Fig. 4 is a part of the carriage part. Cross-sectional view, Figure 5 a, b, c, d,
e is an explanatory diagram of the operation. 5...carriage, 16...first pick-up roller, 17...second pick-up roller.

Claims (1)

[Scope of Claim for Utility Model Registration] A load unloading device that rotates a pick-up roller provided at the front of a carriage that can move forward and backward in the direction of lifting the load and transfers the load from the pick-up roller onto the carriage. a first pick-up roller that is mounted on its axis at a slightly lower position than the carriage and rotates eccentrically; and a second pick-up roller that is mounted on its axis near the rear of the first pick-up roller and at the same height as the carriage. A pick-up device for unloading equipment, characterized in that it is equipped with the following.