JPH07101559A - Conveyor device - Google Patents

Abstract

PURPOSE:To perform smooth movement of articles between a span conveyor and the load-carrying platform of a truck. CONSTITUTION:Through raising and lowering of a second roller conveyor, the conveyance surface of the second roller conveyor is brought into a state to be positioned flush with the conveyance surface of the roller train 19 of a truck 18. A span conveyor 13 is protruded toward the truck 18 side and a gap between the load-carrying platform 21 of the truck 18 and the front end of the second roller conveyor (a free roller part) is bridged by the span conveyor 13. Through the operation, at least a part of a span roller 29 at the frontmost end thereof is fitted in a door support recessed part 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device.

[0002]

[Technology already developed] The applicant has already applied for the following inventions in order to smoothly carry articles in and out of a truck in a truck yard or the like. That is, a conveyor device is formed in which a front and upper recesses are formed so as to leave the conveyor portion at the front end of the conveyor, and the conveyor is provided in the recesses so as to be movable back and forth. In the above device, since the crossover conveyor can be projected toward the loading platform side of the truck and the gap generated between the loading platform of the truck and the front end of the transporting vehicle can be connected by the crossover conveyor, loading and unloading of articles to and from the truck can be carried out smoothly and quickly. It is something that can be done.

[0003]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the following problems in the above apparatus. That is, in order to realize smooth movement (sliding movement) of articles on the cargo bed surface of a truck, a roller row (a free roller conveyor-like one) having a large number of free rollers with their axes oriented in the left-right direction is provided. However, there is 70 between the axis of the rearmost free roller and the rear end of the truck bed.
There is a space of about 220 mm, in other words, there is no free roller supporting the articles between the rearmost free roller and the rear end of the truck bed, and as a result, the crossover conveyor and the rearmost free roller are not connected. In between, there was a drawback that the article could not move smoothly.

[0004]

[Means for Solving the Disadvantages] The present invention adopts the following means in order to eliminate the above disadvantages. The present invention, the front end of the conveyor is formed with a recess that is open forward and upward so as to leave the conveyor part, the crossover conveyor is provided in the recess so that it can move back and forth, and the front end of the crossover conveyor faces forward. A projecting swing arm is provided so as to be swingable up and down, and a crossover roller having an axis centered in the left-right direction is provided at the front end of the swing arm so as to be rotatable.

[0005]

The present invention has the following functions. By locating the crossover roller between the crossover conveyor and the rearmost free roller, i.e., between the rearmost free roller and the trailing edge of the truck bed, the crossover conveyor and the rearmost roller are located. Goods can be moved smoothly between the free rollers. Further, since the swing arm is vertically swingable, the buffer mechanism on the front side of the truck is pushed down by the load of the article previously placed on the truck, and as a reaction to that, the rear end of the truck bed jumps up, Since the swing arm swings upward with the movement, the swing arm and the transition roller are not damaged.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. In this specification, the front means the right side of FIG. 1, the rear means the left side of FIG. 1, the left means the upper side of FIG. 1, and the right means the lower side of FIG.

[0007] A pair of left and right two sets can be freely driven in the forward and reverse directions.
The roller conveyor 1 is provided so that the conveying direction is directed in the front-rear direction, and the second roller conveyor 3 is provided so as to be vertically movable by a known lifting device 2 so as to be connected to the first roller conveyor 1.

The second roller conveyor 3 has a rear drive conveyor section 3a that can be driven forward and backward and a front free roller section 3b.

A pusher accommodating recess 6 that opens upward and downward is formed in the front part of the drive conveyor 3a, and a pusher 7 that can be moved back and forth is provided in the pusher accommodating recess 6 so as to be vertically movable. Specifically, the pusher 7 is configured to move up and down and move back and forth by the following configuration. That is, an elevating table 8 is provided so as to be positioned in the pusher storage recess 6 so as to be able to elevate and lower with respect to the second roller conveyor 3 by a known elevating device, and the elevating table 8 is provided with a known sliding mechanism 9 therebetween. The pusher 7 is movable back and forth. The sliding mechanism 9 has a base provided on the lifting table 8 and an intermediate sliding body that is slidably mounted on the base and on which the pusher 7 is slidably mounted. When the intermediate sliding body is moved, the pusher 7 is configured to move in the same direction and the same amount with respect to the intermediate sliding body when the intermediate sliding body is moved. With such a configuration, the pusher 7 can be completely lowered from the transport surface of the drive conveyor portion 3a, and can be completely protruded from the transport surface of the drive conveyor portion 3a, so that the free roller portion 3
It can project forward from the front end of b. A detection mechanism for detecting a reaction force acting on the pusher 7 is provided at a required portion of a power mechanism (not shown) for operating the pusher 7, and when a force greater than a set value acts on the pusher 7, the pusher 7 The pressing operation of is stopped. With such a structure, an unreasonable force does not act on the article W.

The free roller portion 3b is formed with a recess 12 that is open forward and upward so that the left and right conveyor parts are left, and the conveyor 13 is crossed over the recess 12 by a driving device such as a linear solenoid. It is movably installed. To leave the conveyor part on the left and right parts of the free roller part 3b means that the free roller part 3b
This means that the roller group is left on the left and right parts so that the upper article W does not fall into the recess 12.
The transfer conveyor 13 is composed of a roller conveyor including a free roller row. The transfer conveyor 1
The transport surface of 3 is flush with the transport surface of the free roller portion 3b.

A truck stop station 17 is provided in front of the crossover conveyor 13. A truck 18 is stopped at the truck stop station 17 with its rear end facing the free roller portion 3b. On the upper surface of the loading platform 21 of the truck 18, four roller rows 19 each including a large number of free rollers 20 with their axes oriented in the left-right direction are provided. Then, the axis of the rearmost free roller 20 and the bed 2 of the truck 18
There is a distance L (a distance of about 70 to 220 mm) from the rear end of the first unit. Further, a door receiving recess 22 into which a lower portion of a double door 24 (see FIG. 1) is fitted is formed at a rear end portion of the loading platform 21 of the truck 18. A bumper 23 is provided at the rear end of the loading platform 21 so as to project rearward.

As shown in FIGS. 6 and 7, the crossover conveyor 13
A pair of left and right brackets 25 is provided on each of the left and right portions of the front end of the tongue, and a pair of left and right swinging arms 28 interconnected by a pivot shaft 26 having the axis centered in the left and right direction is swingable up and down. The swinging arm 28 is provided with two crossover rollers 29, which are arranged in the front-rear direction and have their axes centered in the left-right direction, rotatably via a shaft 30. Is rotatably provided. The swing arm 28 contacts the base frame of the transfer conveyor 13 in a state where the upper end envelope surface of the transfer roller 29 is horizontal and is flush or nearly flush with the transport surface of the transit conveyor 13. ing. That is, the swing arm 28 is swingable up and down from the above state. The migration roller 29 at the foremost end
At least a part of the door receiving recess 2 in the normal state described above.
It is designed to fit into 2.

[0013]

Operation of the Embodiment Next, the operation of the embodiment will be described. The truck 18 is stopped at the truck stop station 17 with its rear end facing the free roller portion 3b with the rear door 24 opened. In addition, the truck 18
Is stopped at the rear end of the track 18 and the free roller portion 3b.
It may be a loose stop forming a wide gap with the front end of the. Before the work or at the same time as the work, after making the carrying surface of the second roller conveyor 3 flush with the carrying surface of the first roller conveyor 1, the required number of pieces from the first roller conveyor 1 to the second roller conveyor 3 The article W is moved. During the work, the pusher 7 is in a state of descending from the conveyance surface of the second roller conveyor 3 so as not to collide with the article W. After that, the second roller conveyor 3 is moved up or down so that the transport surface of the second roller conveyor 3 is flush with the transport surface of the roller row 19 of the track 18, and the crossover conveyor 13 is projected toward the track 18 side. Then, the gap between the cargo bed 21 of the truck 18 and the front end of the second roller conveyor 3 (free roller portion 3b) is connected by the crossover conveyor 13. By this operation, at least a part of the frontmost transition roller 29 is fitted into the door receiving recess 22. Thereafter, the article W on the second roller conveyor 3 is driven while intermittently driving the drive conveyor section 3a.
Is slid on the crossover conveyor 13 by a worker's hand and placed on the bed of the truck 18. After all the articles W are placed on the truck 18, that is, after the second roller conveyor 3 is emptied, the pusher 7 is raised and moved forward to push the articles W on the loading platform of the truck 18 forward. , The article W is placed on the bed of the truck 18 without back and forth play. After that, the truck 18 is moved slightly forward to close the door 24 that has been opened, and the truck 18 is started.
The work of unloading the articles W from the truck 18 can be performed in the reverse order of the loading work. Needless to say, the operation of the pusher 7 is unnecessary at that time.

FIG. 9 shows a modification of the swing arm 28. In FIG. 9, the swing arm 28 is in contact with the base frame of the crossover conveyor 13 in a state in which the envelope surface of the upper end portion of the crossover roller 29 is slightly inclined forward. The lower edge of the swing arm 28 serves as the guide surface 31, and when the crossover conveyor 13 projects forward, the guide surface 31 hits the rear edge of the door receiving recess 22 and is swung upward, and becomes that state. The envelope surface of the upper end of the transfer roller 29 is horizontal and is flush with or substantially flush with the transport surface of the transit conveyor 13. Therefore, in this state, the two front transition rollers 29 are in a state of being movable up and down.

[0015]

The present invention has the following effects due to the above-mentioned configuration. By locating the crossover roller between the crossover conveyor and the rearmost free roller, i.e., between the rearmost free roller and the trailing edge of the truck bed, the crossover conveyor and the rearmost roller are located. Goods can be moved smoothly between the free rollers. Since the swing arm can swing up and down, the shock absorbing mechanism on the front side of the truck is pushed down by the load of the article previously placed on the truck, and even if the rear end of the truck bed jumps up as a reaction to that, the movement As the swing arm swings upwards, the swing arm and the transition roller are not damaged.

[Brief description of drawings]

FIG. 1 is a simplified plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged cross-sectional view of a main part of FIG.

FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG.

5 is an enlarged sectional view taken along line VV of FIG.

FIG. 6 is an enlarged view of part A of FIG.

7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is a side view showing a state when the pusher is operating.

FIG. 9 is a side view of an essential part showing a modified example of the swing arm.

[Explanation of symbols]

 3 Second Roller Conveyor 3a Drive Conveyor Section 3b Free Roller Section 12 Recess 13 Crossover Conveyor 28 Swing Arm 29 Crossover Roller

Claims (1)

[Claims] 1. A front and upper recesses are formed at the front end of the conveyor so that the conveyor portion remains, and a crossover conveyor is provided in the recesses so as to be movable back and forth. A conveyor device in which a vertically projecting swing arm is provided so as to be swingable up and down, and a crossover roller having an axis centered in the left-right direction is freely provided at the front end of the swing arm.