JPH082651A - Controller for load transfer device - Google Patents

Abstract

PURPOSE:To efficiently carry out the load transfer with high efficiency and place the load on a load carrying platform surely and safely, by controlling the operation of a transfer device according to the length of the load. CONSTITUTION:A load 1 is transferred on a load carrying plaform 3 side from a station 2 side, and when the load 1 passes through the first sensor 7 installed closely to the end part close to the station 2 on the load carrying platform 3, the operation of a transfer device 4 is suspended instantly by a control circuit 9 in the ordinary case, and the load l can be stopped at the position on the load carrying platform 3 which is most advantageous for the discharge to the station 2 side, independently of the length of the load 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load transfer device control device capable of moving a load platform up and down with respect to a load delivery station, and more particularly to a load transfer device provided on the load carrier or station. The present invention relates to a control device for stopping the operation of the.

[0002]

2. Description of the Related Art In factories and the like, an object to be conveyed, for example, a container containing a large number of members, is often hung and conveyed when it is supplied to a processing step or transferred to another station. The device is used.

[0003] This hanging transfer device detects a transfer device for transferring a load to a loading platform that can be moved up and down with respect to a station and that the load has reached a desired position on the loading platform. And a sensor for stopping the operation of the transport device.

[0004]

In the above-described conventional transport apparatus, the load detection sensor provided near the end of the carrier on the far side of the station detects the arrival of the load, so that the control device can The transport device is stopped. In this case, when the load is, for example, a container having a fixed length, the carrier device of the loading platform may always be moved by a fixed distance.

However, when trying to convey various containers and loads having different lengths, even when the length of the load is short, the transport device operates until the load reaches the load detection sensor. As a result, it takes extra time to transfer the cargo on the loading platform and carry it out to the subsequent process, which causes a problem that the transportation efficiency is reduced.

On the other hand, if the load is large, there is a risk that the load may overflow or drop from the bed even if the load detection sensor detects the load and immediately stops the transport device.

The present invention has been made to solve the above-mentioned problems, and it is possible to control the operation of the transfer device according to the length of the load, so that the load can be transferred efficiently.
An object of the present invention is to provide a control device in a load transfer device that can safely and reliably load a load on a loading platform.

[0008]

According to the present invention, the above problems can be solved as follows. (1) As shown in FIG. 1, at least one of a station (2) for delivering and receiving a load (1) and a loading platform (3) capable of moving up and down with respect to the station (2), A control device (6) in a load transfer device (5) provided with a transfer device (4) capable of transferring a load from the station side to the load platform (3) side, wherein the station in the load platform (3) It is provided near the end closer to (2) and
The first sensor (7) for detecting the passage of (1) and the operation of the conveying device (4) by detecting the passage of the load (1) by the first sensor (7). A normal control circuit (9) for stopping should be provided.

(2) As shown in FIG. 1, in addition to the above item (1), the loading platform (3) is provided slightly inward from the end of the loading platform (3) far from the station (2), and (1)
The second sensor (8) that detects the arrival of the tip of the load, and the second sensor (8) detects that the tip of the load (1) has reached the end of the transport device (4). A first safety circuit (10) for stopping.

(3) As shown in FIG. 1, the above (1) or
In addition to the item (2), a third sensor (11) is provided near the end of the loading platform (3) farther from the station (2) and detects the arrival of the tip of the load. Third
The sensor (11) detects that the tip of the load (1) has arrived, and thereby stops the operation of the transfer device (4) and also activates the alarm means (12) and a second safety circuit (13). Equipped with.

(4) As shown in FIG. 6, a loading platform that can move up and down.
Stations for delivering the load (1) to both sides of (3)
(2) is arranged, and the carrier (3) or station (2)
A control device (6) in a load transfer device (5) provided with a transfer device (4) capable of transferring the load (1) from each station (2) side toward the loading platform (3) side, It is provided near both ends of the loading platform (3) and detects that the loading (1) has passed 1
The pair of first sensors (7) (7) and this first sensor (7)
A normal control circuit (14) for stopping the operation of the transport device (4) by detecting that (1) has passed.

(5) As shown in FIG.
Stations for delivering the load (1) to both sides of (3)
(2) is arranged, and the carrier (3) or station (2)
A control device (6) in a load transfer device (5) provided with a transfer device (4) capable of transferring the load (1) from each station (2) side toward the loading platform (3) side, It is provided near both ends of the loading platform (3) and the loading (1) is passing, or
A pair of first sensors (7) for detecting the passage of (1)
(7) and the pair of first sensors (7) on the loading platform (3)
(7) A pair of second sensors (8) and (8), which are provided slightly inward of the load and detect that the load (1) has arrived,
Either one of the first sensors (7) detects that the load (1) is passing, or after detecting that the load (1) has passed, the one first sensor (7) is detected. The second sensor (8) farther from (1) is provided with a normal control circuit (15) for stopping the operation of the transfer device (4) by detecting that the load (1) has arrived.

(6) As shown in FIG. 10, stations (2) for delivering and receiving the load (1) are arranged on both sides of the load platform (3) which can move up and down, and the load platform (3) or the station.
A load transfer device provided with a transfer device (4) capable of transferring the load (1) from each station (2) side toward the load platform (3) side in (2)
The control device (6) in (5), which is provided near both ends of the loading platform (3), and the load (1) is passing through,
And a pair of first sensors for detecting that the load (1) has passed
(7) (7) and the pair of first sensors on the platform (3)
(7) Provided in a part slightly inward of (7) and loaded
A pair of second sensors (8) that detect the arrival of (1)
(8) and either one of the first sensors (7) detects that the load (1) has passed, and thus the first normal control circuit (16) for stopping the operation of the conveying device (4). And either one of the first sensors (7) detects that the load (1) is passing, or after detecting that the load (1) has passed, the one first sensor Second sensor farther from (7)
By (8) detecting that the load (1) has arrived,
Second normal control circuit for stopping the operation of the transfer device (4)
(17) and must be provided.

(7) As shown in FIG. 10, in addition to the above item (6), a switching means (18) for enabling or disabling the operation of the first normal control circuit (16) is further provided. Set up.

(8) As shown in FIGS. 6, 8 and 10, in any one of the above items (4) to (7), each first sensor (7) is connected to at least the load (1). It shall have a function of detecting that a part has arrived and that the load (1) is passing, and one of the first sensors (7) is
By detecting that the load (1) is passing and the first sensor (7) on the other side detects that at least a part of the load (1) has arrived, the transport device (4) A safety circuit for activating the alarm means (10) as well as stopping the operation of is provided.

(9) As shown in FIGS. 6, 8, 10 and 12, in each of the above items (1) to (8), each sensor (7) (8) is connected to a load ( The photoelectric sensor is composed of a light emitting element and a light receiving element which are provided so as to face each other on both sides of the loading platform (3) orthogonal to the carrying direction of (1).

(10) As shown in FIGS. 6, 8 and 10, in any one of the above items (1) to (8), the carrier device (4) is provided on the loading platform (3). Use a belt conveyor.

(11) As shown in FIG. 12, the above (1)-
In any one of (8), the transfer device (4 ') is a load pushing device provided on the station (2) side.

[0019]

According to the present invention, when the load is transferred from the station side to the loading platform side and passes through the first sensor provided near the end of the loading platform near the station, the normal control circuit immediately causes the loading device to move. Since the operation is stopped, regardless of the length of the load, the load can be stopped at the most convenient position on the bed for the next discharge to the station side (claims 1 and 4).

Further, a second sensor, a third sensor, etc. are provided,
Also by making them possible to stop the operation of the conveying device, the safety is improved (claims 2, 3, 6, 8).

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the present invention will be described with reference to the drawings.

1 to 5 show claims 1 to 3, 9 and 10.
An embodiment of the described invention (hereinafter referred to as a first embodiment) will be shown.

FIG. 2 shows a suspending and conveying device, (21) is
A rail erected on the ceiling, (A) is a trolley that travels along the rail (21), and (2) is a loading platform that is hung and supported by the traveling trolley (A).

A pair of support plates (23), which are aligned in the front-rear direction and are oriented in the left-right direction, are vertically provided at the front and rear portions of the horizontal board (22) of the traveling carriage (A) to form a pair. A pair of left and right take-up drums (24) are pivotally installed at the center of both support plates (23),
Similarly, on both ends, with a flanged roller (25),
A pressing roller (26) arranged in parallel with and close to it is pivotally installed.

The free end of the suspension belt (27) having the base end fixed to each winding drum (24) passes between the flanged roller (25) and the pressing roller (26), and the lower bed ( 2) Underframe (28) 4
It is fastened to the corner.

The drum shaft (2
Gears (29) with the same number of teeth are fitted and meshed with each other at the inner end of 4a), and one of the gears (29) is a motor provided in the center of the substrate (21) in the left-right direction. The output gear (31) of (30) meshes with each other, and the platform (2) moves up and down while being kept horizontal by the motor (30).

A substrate which is horizontal below the substrate (22)
A downward U-shaped hanging fixture (36) is fixed to the four corners of the upper surface of the holding plate (35) which is slightly smaller than (22), and the upper piece thereof is the hanging rod (32).
It is loosely fitted to the suspension from below and is suspended by the locking pin (34), and the pressing plate (35) is urged downward by the compression spring (37) wound around the suspension rod (32). ing.

When the holding plate (35) rises against the compression spring (37) on the side surface of each suspension support (36), it comes close to the proximity sensor (33) and the double shaft motor (30) is installed. A sensing piece (38) for stopping is attached.

A non-slip high friction layer (39) made of an elastic material such as rubber or urethane is formed on the entire lower surface (or a part thereof) of the pressing plate (35).

As shown in FIG. 3, a pair of left and right endless belts (4) wound around pulleys (40) are mounted on the underframe (28) of the loading platform (3).
1) is configured to be transported in the left-right direction in FIG. 1 by the motor (42) shown in FIG. ) Is a belt conveyor (43).

A belt conveyor (4
On both outer sides of 3), guide fences (44) that are approximately equal in length and parallel to the belt conveyor (43) are erected so that the lateral position can be adjusted.

As shown in FIGS. 1, 3 and 4, each guide rack (44) is closer to the end closer to the station (2) and slightly inward than the end farther from the station (2). The light-emitting element (46a) and the light-receiving element (46a) are arranged so as to oppose in a direction orthogonal to the conveyance direction of the load (1) by the belt conveyor (43) in the portion near the end and the end near the station (2).
First sensor (7) which is photoelectric sensor (46) consisting of (46b)
And a second sensor (8) and a third sensor (11).

As shown in FIG. 1, the first sensor (7) on the loading platform (3) normally detects the passage of the load (1) to stop the operation of the transfer device (4). Control circuit (9)
Then, the second sensor (8) detects the arrival of the tip of the load (1), and thereby stops the operation of the transfer device (4), and the third sensor (11). ) Detects that the tip of the load (1) has reached, stops the operation of the carrier device (4), and activates an alarm means (12) such as an alarm lamp or a buzzer (2). A control device (6) comprising 13) is provided.

As shown in FIG. 3, in the first embodiment, the station (2) always has the front end side (FIG. 3) of the loading platform (3).
It is located on the left side of the table) and is a motor-driven roller conveyor (47) installed in a multi-stage vertically.

Next, the operation of the first embodiment will be described based on the flow chart shown in FIG.

After raising and lowering the loading platform (3) to a position at the same height as the desired roller conveyor (47), the roller conveyor (47) and the transport device (4) on the loading platform (3) are operated (S1 ), Load (1)
Are transferred to the right in FIGS. 1 and 3.

When the load (1) reaches the position of the first sensor (7) and the first sensor (7) is shielded by the load (1),
(S2) and the transport device (4) continue to operate,
(S3), after that, the load (1) completely passes the position of the first sensor (7), and the light receiving element (46b) of the first sensor (7) becomes the light emitting element (4).
When the light from 6a) is received (S4), the operation of the transport device (4) is immediately stopped (S5), and the load (1) is located at a position close to the first sensor (7) on the loading platform (3). Stopped at.

After that, the loading platform (3) is lifted up, the suspending / conveying device travels to another station (2), and then the loading platform (3) is lowered again so as to have the same height as the desired roller conveyor (47). Stop at the position and load the load (1) on the loading platform (3) with the roller conveyor.
When transferring to the (47) side, since the load (1) is located near the end of the load platform (3) closer to the roller conveyor (47), the transfer can be carried out quickly.

In step (S4), for example, the first
The sensor (7) fails for some reason, or the light emitting element
Despite the fact that the load (1) actually passes through the first sensor (7) due to some kind of light blocking object between the (46a) and the light receiving element (46b), the first sensor ( If 7) does not receive light,
The load (1) reaches the second sensor (8) and the second sensor (8) loads
By being shielded from light by (1) (S6), the transport device (4)
Is stopped (S5).

Further, in the unlikely event that the first sensor (7) and the second sensor
(8) both failed, or a plurality of loads (1) were erroneously conveyed in a row without a gap, and the second sensor (8) was activated, but the load (1) was further moved due to inertia. In the case where it has proceeded, the alarm means (12) is activated at the time when the tip of the load (1) shields the third sensor (11).
(S8), the transport device (4) is stopped urgently (S5).

FIG. 6 shows an embodiment of the invention described in claims 4 and 8-10 (hereinafter referred to as a second embodiment). It should be noted that the same members as those in the first embodiment below are given the same reference numerals and are shown in the drawings, and detailed description thereof will be omitted.

In this second embodiment, FIGS.
Stations (2) similar to the station (2) shown in FIG. 3 are arranged at both ends of a platform (3) similar to that in the suspension conveyance device shown in FIG. )
In some cases, the transfer device (4) on the loading platform (3) can transport the load (1) in both directions, and at the two sides of the loading platform (3), A first sensor (7) consisting of a photoelectric sensor (46) similar to that shown in 2 is provided.

That is, each of the first sensors (7) has to check that the load (1) has reached its position and is passing (light blocking),
It is possible to detect that (1) has passed (light reception after light shielding).

(14) indicates that one of the first sensors (7)
By detecting that (1) has passed, the transfer device
This is a normal control circuit that stops the operation of (4). (19) is a state where one of the sensors (7) is shielded by the load (1) and the other sensor (7) also receives the load (1).
The alarm means (12)
It is a safety circuit that activates the device and stops the transport device (4) in an emergency.

Next, based on the flow chart in FIG.
The operation of the second embodiment shown in FIG. 6 will be described.

For example, when the load (1) is transferred from the station (2) on the left side in FIG. 6 to the loading platform (3), the roller conveyor (see FIG. 3) of the station (2) and the transfer device are used. (4) and (4) are actuated by sending the goods to the right in FIG. 6 (S1).

Thereafter, steps (S2) to (S5) operate in the same manner as steps (S2) to (S5) of the first embodiment shown in FIG.

In step (S4), when the first sensor (7) is shielded while the other first sensor (7) is shielded (S6), the alarm means (12) is activated. With
(S7), the transport device (4) is stopped urgently (S5).

The load (1) is on the right side station (2) in FIG.
When sent from, the operation of the left and right first sensors (7) is only reversed, and the operation is similar to the flowchart shown in FIG. 7.

Therefore, as compared with the first embodiment, the operation of the second sensor (8) causes the transfer device (4) to move.
The same operation and effect as those of the first embodiment can be achieved only by not stopping the operation of. Moreover, the embodiment shown in FIG. 6 has the advantage that the same function can be achieved regardless of whether the load (1) is sent from the left or right station (2).

FIGS. 8 and 9 show an embodiment of the invention described in claims 5 and 8 to 10 (hereinafter referred to as a third embodiment).

In the third embodiment, in the same construction as the second embodiment (excluding the normal control circuit (14)),
A pair of second sensors (8) and (8) for detecting arrival of the load (1) are provided at portions of the loading platform (3) slightly inward of the left and right first sensors (7) and (7). At the same time, either one of the first sensors (7) detects that the load (1) is passing, or after detecting that the load (1) has passed, one of the first sensors (7) The second sensor (8) farther from 7)
By detecting that (1) has arrived, the transport device
The normal control circuit (14) for stopping the operation of (4) and one of the first sensors (7) detect that the load (1) is passing, and the other first sensor ( 7) detects that at least a part of the load (1) has arrived, thereby stopping the operation of the transfer device (4) and at the same time alarming means (12).
And a safety circuit (19) for operating the.

The device of the third embodiment operates as shown in FIG. That is, steps (S1) to (S4) are shown in FIG.
The same operation as steps (S1) to (S4) of the second embodiment shown in FIG.

However, in the step (S4), the load (1) completely passes through the one first sensor (7), and the first sensor (7)
Even when the light is received, the transport device (4) continues to operate without stopping the operation (S5), and the second sensor (8) far from the one first sensor (7) is shielded from light. (S6), the operation is stopped for the first time (S7).

In step (S4), the first one of the
Even if the sensor (7) is not shaded yet, its first
When the second sensor (8) farther from the sensor (7) is shielded from light
(S8), the operation of the transfer device (4) is stopped (S7).

Further, in step (S8), the second
The sensor (8) is not shielded from light, and the other first sensor
When (7) is shielded first (S9), the alarm means (12) is activated (S10), and the transport device (4) is stopped urgently (S7).

Therefore, in the third embodiment, the load
(1) is not immediately stopped after passing the first sensor (7) on the loading platform (3), and reaches the second sensor (8) farther from the first sensor (7). Since it will be stopped at the time of doing, for example, from the station (2) on the left side of FIG.
When receiving (1) and wanting to discharge the load (1) on the right side of FIG. 8 at another station (2), the right end on the loading platform (3) can be always adjusted to a fixed position, which is convenient. Is.

FIG. 10 shows an embodiment of the invention described in claims 6 to 10 (hereinafter referred to as a fourth embodiment). The fourth embodiment has a structure roughly combining the second embodiment and the third embodiment.

That is, the mechanical structure is the same as that of the third embodiment, and the pair of first sensors (7) are arranged on the loading platform (3).
(7) and the second sensors (8) and (8) are provided, and as an electric control circuit configuration, a first normal control circuit (16) which is the same as the normal control circuit (14) of the second embodiment, Normal control circuit of the third embodiment
A second normal control circuit (17) identical to (15), a switching means (18) for enabling or disabling the operation of the first normal control circuit (16), the second embodiment and the third embodiment. The same safety circuit (19) and alarm means (12) as in the above embodiment are provided.

The switching means (18) is specifically the first
It can be a mere switch that can connect and disconnect the signal line that normally connects the control circuit 16 and the transport device 4.

The operation of the fourth embodiment will be described below with reference to FIG.

In FIG. 11, steps (S1) to (S3) are the same as steps (S1) to (S3) in FIGS. 7 and 8. That is, the transport device (4) is operated in the desired direction (S1),
Even after (1) shields one of the first sensors (7) from light (S2), the transport device (4) continues to operate (S3).

In step (S4), if the switching means (18) is on (ON), that is, the operation of the first normal control circuit (16) is valid, one of the first sensors (7) receives light. As a result (S5), that is, when the load (1) passes through the first sensor (7), the operation of the transfer device (4) is stopped.
(S6).

In step (S5), one of the first sensors
(7) does not receive light, and first sensor (7) on one side
When the second sensor (8) farther from is shielded by the load (1) (S7), the operation of the transfer device (4) is also stopped (S6).

In step (S7), the second sensor (8) on the far side is not shielded from light, and the other first sensor (8) is not shielded.
When (7) is shielded from light (S8), the alarm means (12) is activated (S4) and the transport device (4) is deactivated.
(S6).

In step (S4), the switching means (18) is switched to the OFF (OFF) side, and the first normal control circuit (16)
If the operation of the
Even if the sensor (7) receives light (S10), the transport device (4) continues to operate (S11), and then the load (1) is moved to the second sensor (8) farther from the one first sensor (7). ) To reach its second sensor
When (8) is shielded from light (S12), the operation of the transfer device (4) is stopped (S6).

In step (S10), even if the load (1) reaches the second sensor (8) farther from the first sensor (7) without receiving light from the one first sensor (7). Second sensor
Even when the light is blocked from (8) (S13), the operation of the transfer device (4) is stopped (S6).

In step (S13), the second sensor (8) on the far side is not shielded from light, and the first sensor (7) on the other side is not shielded.
When the light is blocked from light (S13), the reporting means (12) is activated (S15), and the transport device (4) is brought to an emergency stop (S).
6).

12 and 13 show claims 1 to 3, 9 and 11.
An embodiment of the described invention (hereinafter referred to as a fifth embodiment) will be shown.
In the fifth embodiment, the present invention is applied to the load transfer device (51) in the rotary rack (50).

That is, the rotary rack (50) is a support frame.
A large number of pallets (53) supported by the upper and lower stages (52)
The center of the column (54) on the left side of FIG. 13 is designed to be able to independently travel in each step along the trajectory of the oval in plan view. (The other side is not shown in the figure), but the column (54) arranged inside the elliptical locus has a load pushing device (56) equipped with a pusher (55) that can be horizontally expanded and contracted by a motor drive so that it can be moved up and down. It is installed.

Further, on the pillar (57) which is erected on the outer side of the traveling locus of the pallet (53) so as to face the pillar (54), the load pushing device (56) moves the pallet (53) outward. Extruded load
The loading platform (3) for receiving (1) is mounted so as to always move at the same height as the loading push-out device (56) in synchronization with each other.

The cargo bed (3) has a load placed on the cargo bed (3).
A discharge device (58) for discharging (1) is provided. A transfer device (51) is formed by the load push-out device (56) and the load platform (3), and a part of the rotary rack (50) sandwiched therebetween forms a station (2).

In the fifth embodiment, as shown in FIG.
First sensor (7) and second sensor similar to those of the embodiment shown in FIG.
(8) and the third sensor (11) are provided in the same arrangement.

The control device (6) is provided with a normal control circuit (9), a first safety circuit (10) and a second safety circuit (13) similar to those of the first embodiment. The same operation as in the embodiment of

That is, in the third embodiment, the object of application is the load transfer device (51) of the rotary rack (50), and the transfer device (4 ') is provided on the station (2) side. Extruder
Except that it is set to (56), it is the same as the first embodiment, and the same operation and effect can be obtained.

In each of the above embodiments, the sensor
Although (7), (8) and (11) are transmission type photoelectric sensors, they may be reflection type photoelectric sensors, proximity sensors, limit switches and the like.

[0077]

According to the present invention, the following effects can be obtained. (1) Since the transport device can be stopped immediately after the load passes through the first sensor, one end of the load is always near the end of the loading platform near the station regardless of the length of the load. It can be adjusted to a fixed position and stopped, and it is convenient to handle the load thereafter, and the transfer amount at the time of receiving the load can be minimized to shorten the transfer time and the load and unload operations can be done quickly. (Claims 1, 4 and 6).

(2) Due to the failure or malfunction of the first sensor,
When the load actually passes through the first sensor but the first sensor does not operate, or when a plurality of loads are erroneously sent in series, the tip of the load is transferred to the second sensor. It is safe because the operation of the transporting device is stopped by reaching it (claims 2 and 6).

(3) It seems that both the first sensor and the second sensor are out of order, malfunction occurs, or the second sensor is activated, but the load and the conveyance device are advanced due to inertia. In this case, the tip of the load is the third sensor or 2
The first one of the provided first sensors in the traveling direction of the load
When the sensor is activated, the transport device is stopped in an emergency and the alarm means is activated, which is even safer, and the load platform moves up and down with the load protruding from the load platform, and the load drops from the load platform. This can be prevented (Claims 3 and 8).

(4) In the load transfer device capable of sending the load not only in one direction to the loading platform but also in the opposite direction, the load is transferred in either of the feeding directions. It can be operated in the same manner to stop the load at a predetermined position on the bed (claims 4 to 6 and 8).

(5) When a load is sent from one end side of the loading platform to the loading platform and discharged from the other side of the loading platform to the station, the load is always discharged at the end of the loading platform regardless of the length of the loading platform. It is convenient because it can be arranged closer to the members (Claim 5).

(6) By providing the switching means, the load sent to the loading platform is stopped immediately after passing through the first sensor on the approach side, and the load on the far side from the first sensor on the approach side is stopped. It is possible to select a mode of stopping when two sensors are reached, and a more convenient mode can be selected depending on the arrangement of the station at the time of loading and unloading with respect to the loading platform (claim 7). ).

(7) Even when the load does not stop at the normal stop position due to the operation of the first sensor, it can be stopped by the operation of the second sensor and the operation of the third sensor or other first sensor, It is perfect because of the double safety measures (combination of claims 1, 2 and 3 and combination of claims 6 and 8).

(8) If the load transfer device is a load pushing device provided outside the load platform, it is not necessary to provide a special load transfer device on the load platform, and the load platform has a simple structure and is lightweight. (Claim 11).

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an outline of a first embodiment of the present invention.

FIG. 2 is a side view of a suspension conveyance device used in the first embodiment.

FIG. 3 is a front view showing a state during transfer of a load.

FIG. 4 is a schematic plan view of the same.

FIG. 5 is a flowchart showing an operating state of the first embodiment.

FIG. 6 is a schematic configuration diagram showing an outline of a second embodiment of the present invention.

FIG. 7 is a flow chart showing an operating state of the second embodiment.

FIG. 8 is a schematic configuration diagram showing an outline of a third embodiment of the present invention.

FIG. 9 is a flowchart showing an operating state of the third embodiment.

FIG. 10 is a schematic configuration diagram showing an outline of a fourth embodiment of the present invention.

FIG. 11 is a flowchart showing an operating state of the fourth embodiment.

FIG. 12 is a schematic configuration diagram showing an outline of a fifth embodiment of the present invention.

FIG. 13 is likewise a vertical sectional front view of a main part.

[Explanation of symbols]

 (1) Load (2) Station (3) Loading platform (4) Transfer device (5) Load transfer device (6) Control device (7) First sensor (8) Second sensor (9) Normal control circuit (10) First safety circuit (11) Third sensor (12) Alarm means (13) Second safety circuit (14) (15) Normal control circuit (16) First normal control circuit (17) Second normal control circuit (18) Switching means (19) Safety circuit (21) Rail (22) Substrate (23) Support plate (24) Take-up drum (24a) Drum shaft (25) Flanged roller (26) Roller (27) Suspended belt (28) Underframe (29) Gear (30) Motor (31) Output gear (32) Suspension rod (33) Proximity sensor (34) Locking pin (35) Holding plate (36) Suspension support (37) Compression spring (38) ) Sensing piece (39) High friction layer (40) Pulley (41) Endless belt (42) Motor (43) Belt conveyor (44) Guide shelf (46) Photoelectric sensor (46a) Light emitting element (46b) Light receiving element (47) Roller conveyor (50) Rotary rack (51) Load transfer device (52) Support frame (53) Pallet (54) Post (55) Pusher (56) Load extrusion device (5 7) Support (58) Ejector

Claims (11)

[Claims] 1. A transfer device capable of transferring a load from the station side to the load side, to at least one of a station for delivering and receiving the load and a load platform that can be moved up and down with respect to the station. A control device in the provided load transfer device, wherein the first sensor is provided near the end of the loading platform near the station and detects that a load has passed; And a normal control circuit for stopping the operation of the conveying device by detecting that the carrier has passed. 2. A second sensor, which is provided slightly inward of the end of the loading platform farther from the station and detects when the tip of the load has reached, and the second sensor,
The control device in the load transfer device according to claim 1, further comprising: a first safety circuit that stops the operation of the transfer device by detecting that the front end of the load has arrived. 3. A third sensor provided near the end of the loading platform farther from the station and detecting the arrival of the tip of the load, and the third sensor detecting that the tip of the load has arrived. The control device for the load transfer device according to claim 1 or 2, further comprising: a second safety circuit that stops the operation of the transfer device and operates the alarm means. 4. Stations for delivering loads are arranged on both sides of a load platform that can move up and down, and a transport device that can transport a load from each station side to the load platform side is provided on the load platform or the stations. A control device in a load transfer device, wherein a pair of first sensors, which are provided near both ends of the loading platform and detect that a load has passed, and the first sensor, A control device for a load transfer device, comprising: a normal control circuit for stopping the operation of the transfer device by detecting the operation. 5. Stations for transferring loads are arranged on both sides of a load platform that can move up and down, and a carrier device that can transport a load from each station side to the load platform side is provided on the load platform or the stations. A control device in a load transfer device, comprising a pair of first sensors that are provided near both ends of the loading platform and that detect that a load is passing or that a load has passed, and the pair of first sensors in the loading platform. A pair of second sensors provided at a portion slightly inward of the pair of first sensors and detecting arrival of the load, and one of the first sensors is passing the load. Of the load is detected or the load has passed, and then the second sensor farther from the one first sensor detects that the load has arrived, thereby stopping the operation of the carrier device. Normal control circuit Controller in goods loader, characterized in that to obtain. 6. Stations for delivering a load are arranged on both sides of a load platform that can move up and down, and a transport device that can transport a load from each station side to the load platform side is provided on the load platform or the station. A control device in a load transfer device, comprising a pair of first sensors which are provided near both ends of the loading platform and which detect that a load is passing and that the load has passed; A pair of second sensors provided at a portion slightly inward of the pair of first sensors and detecting that the load has arrived, and one of the first sensors detects that the load has passed. By doing so, the first normal control circuit that stops the operation of the transport device and the first sensor of either one of them detect that the load is passing, or detect that the load has passed. After the first of the one Farther second sensor from capacitors is, by detecting that the load has reached, the control device in the goods loader, characterized in that it comprises a second usual control circuit for stopping the operation of the conveying device. 7. The control device for a load transfer device according to claim 6, further comprising switching means for enabling or disabling the operation of the first normal control circuit. 8. Each of the first sensors has a function of detecting that at least a part of the load has arrived and that the load is passing, and one of the first sensors has a function of detecting the load. A safety circuit that detects the passage of the vehicle and detects that at least a part of the load has arrived by the other first sensor, thereby stopping the operation of the transport device and operating the alarm means. The control device in the load transfer device according to any one of claims 4 to 7, further comprising: 9. The photoelectric sensor according to claim 1, wherein each sensor is a photoelectric sensor composed of a light emitting element and a light receiving element which are provided so as to oppose each other on both sides of a bed which is orthogonal to the load carrying direction. Control device in load transfer device. 10. The control device for a load transfer device according to claim 1, wherein the transfer device is a belt conveyor provided on a loading platform. 11. The control device for a load transfer device according to claim 1, wherein the transport device is a load pushing device provided on the station side.