JP2000016143A - Screen movement control system of mobile cargo handling device for motor-truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screen movement control system which can favorably control the movement of a screen in the direction fore and aft of a motor-truck, wherein the screen is installed on the rear body of the truck for preventing a cargo collapse. SOLUTION: A screen movement control system of a mobile cargo handling device for a motor-truck is composed of a rear body having a floor surface moved fore and aft by a driving means 3 such as an oil pump, a screen fixed to the floor surface and partitioning the rear body to the front and rear, position sensor means 7 to sense that the screen has moved to the limit position of the forward moving range, a limit switch 6 to sense that the screen has moved to the limit position of the backward moving range, and a control part 9 for controlling the movement of the floor surface, wherein the position sensor means 7 are located on the left and right inner walls in the front of the rear body, while the limit switch 6 is located on either inner wall on the left and right of the rear of the rear body, and the control part 9 makes stop control of the operation of the driving means 3 when the position sensor means 7 or limit switch 6 is put on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition movement control system for a truck moving cargo handling device. In particular,
A truck equipped with a moving cargo handling device for trucks (so-called corrugated vans, etc.) for facilitating cargo handling operations by moving luggage loaded on the carrier in the front-rear direction.
And the like. The partition movement of the truck loading and unloading device, which can be suitably controlled when the partition for preventing the collapse of the load provided in the loading platform is moved in the longitudinal direction of the vehicle. Related to control system.

[0002]

2. Description of the Related Art Hitherto, in a box-type carrier such as a lorry for transporting cargo, a truck moving cargo handling device for saving labor in loading and unloading cargo has been developed.
The load-handling labor-saving device means that the floor (slats) of the cargo bed slides in the front-rear direction of the vehicle using a motor or the like to move the cargo loaded at the back of the cargo bed to the operator's hand or to remove the cargo loaded by the worker. It is moved to the back of the bed and stored.

[0003] When loading luggage, the floor slides forward to advance the luggage already loaded on the luggage carrier, and a space for loading new luggage is secured behind the luggage carrier. Further, when unloading the load, the floor slides backward to feed back the load already loaded on the loading platform, thereby facilitating the removal of the load.

[0004] There is also a type in which the loading platform is provided with a grid-like partition for the purpose of separating loaded luggage or preventing collapse of the load. The partition is arranged in a direction perpendicular to the front-rear direction of the vehicle, and divides the bed into two parts, a front part and a rear part. The size of the partition is substantially equal to the cross-sectional area (opening area) of the box-shaped carrier. The lower part of the partition is usually fixed to the slat, but there is a type that can be detached and can open and close the partition inside the carrier.

[0005] The partition of the truck moving cargo handling device is controlled to move back and forth with the floor (slats) by a console terminal directly connected to a motor or the like by a wire or a remote control terminal that can be operated wirelessly. Floor surface (slats)
When the partition is controlled to move back and forth inside the carrier, the loaded luggage naturally moves.

For example, Japanese Unexamined Patent Publication No. Hei 10-138823 discloses that loading and unloading of loaded luggage can be facilitated by sliding a floor of a luggage carrier and sensors provided at the front and rear of the luggage carrier, respectively. An automatic control cargo handling device capable of detecting the position of a load loaded inside a carrier is disclosed. As the sensor, an infrared sensor composed of a light projecting unit and a light receiving unit arranged so as to face each other is used. In order to detect the passage of an object, it is necessary to align the optical axes of the light projecting unit and the light receiving unit of the sensor.

[0007]

However, the sensor used for the partitioning movement control of the conventional trucking and cargo handling device is configured such that the light emitted from the light emitting part is transmitted to the light receiving part disposed on the opposite side thereof. Because of the structure of receiving and detecting, it is difficult to align the optical axes of each other. That is, if the optical axis of the light emitting unit and the optical axis of the light receiving unit do not match, the infrared light transmitted from the light emitting unit will be out of the receivable range of the light receiving unit, and the light receiving unit will transmit the infrared light. There was something that could not be received.

In order to avoid such a problem, the installation of the sensor on the carrier required an extremely time-consuming optical axis alignment operation. Therefore, even without such an operation, the partition was moved to an appropriate position. There has been a demand for a new partitioning movement control system for trucks that can be controlled.

Further, since an infrared sensor is used as the sensor, especially when the sensor is installed near a luggage carry-in door at the back of a car bed, extraneous light (sunlight) is generated. Malfunction due to light reception is likely to occur. Therefore, the screen and the sudden movement or stop of the floor surface caused by the malfunction of the sensor may cause an injury to the worker, and a person who is not relying on the infrared rays and is safer to move a new type of truck. There has been a demand for the appearance of a partition movement control system for cargo handling devices.

In particular, when the outside air temperature is low (for example, about 0 ° C.), such as in winter, the frequency modulation circuit of the sensor often malfunctions, and the floor surface (slat) is erroneously controlled and slides. Due to such inconveniences as incapacity, there has been a demand for the emergence of a partition movement control system for a truck moving cargo handling device using a sensor that is resistant to low temperatures.

[0011] An object of the present invention is to solve the above problems.
It is an object of the present invention to provide a completely new type of partitioning movement control system for a truck loading and unloading device.

[0012]

Means for Solving the Problems The inventor has made extensive studies and as a result, the invention can be moved in the longitudinal direction by a driving means such as an oil pump in a partitioning movement control system of a truck moving cargo handling device. A bed having a floor surface, and a partition fixed to the floor surface to partition the bed in the front-rear direction; position sensor means for detecting that the partition has moved to a limit position of a forward movement range; and A limit switch for detecting movement to the limit position of the rearward movement range, and a control unit for controlling movement of the floor surface, wherein the position sensor means is provided in front of left and right inner walls of the loading platform, A limit switch is provided behind an inner wall on one of the left and right sides of the loading platform, and the control unit performs the drive when the position sensor unit or the limit switch is turned on. By was screen motion control system such as a truck moving handling apparatus characterized by stopping controlling the operation of the stage, is obtained by solving the above problems.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a perspective view of a lorry equipped with a carrier 1 equipped with the partition movement control system of the truck moving cargo handling device of the present invention. The partitioning movement control system includes a driving unit 3 including an oil pump 3a and a floor slide motor 3b, a floor surface 2 that is rotated endlessly by the driving unit 3, and a position that is mounted in front of a side inner wall of the loading platform 1. A sensor means 7 and a limit switch 6 which is also mounted behind the inner wall on the side of the carrier 1.
And a control unit 9 for stopping and controlling the rotational movement of the floor 2 based on a signal detected by the limit switch 6 and the like.

The floor 2 of the carrier 1 is composed of a number of slats 2a interconnected by a connecting portion 2b, and is endlessly rotated (slid) by the driving means 3 in the longitudinal direction of the vehicle. Make an endless orbit.

The driving means 3 comprises an oil pump 3a,
It comprises a floor slide motor 3b, a movement control box 3c for rotating the floor 2 forward or backward by manual operation, a forward movement control valve 3d and a rearward movement control valve 3e. Therefore, the luggage loaded on the floor 2 is moved by the driving means 3 to the floor 2.
Forward movement (backward movement) and forward movement (rearward movement)
Moved to

The slat 2a is connected to another adjacent slat 2a by a connecting portion 2b (see FIG. 5A). By repeating the connection gradually, an endless floor surface 2 is formed. However, the floor surface 2 is not limited to the above, and may be any other type of sliding floor surface.

The floor 2 has a floor slide motor 3b.
It is preferable to adopt a configuration in which it is moved (rotated and slid) by the rotation of (see FIG. 5B). One floor slide motor 3b may be provided at one of the front end and the rear end of the floor surface 2 or a total of two places at the front end and the rear end of the floor surface 2. 2 is moved (rotated) like a belt conveyor, so that the floor 2
Is moved (slid).

The inside of the bed 1 is divided into two parts by a partition 4 (see FIG. 2). The partition 4 includes at least a column 4a and a door 4b. The partition 4 has one column 4a at each end, and the door portion 4b is fixed between the two columns 4a. However, the door part 4b may be fixed so as to be openable and closable using a hinge 4c at a connection point with the support column 4a.

The column 4a of the partition 4 is also fixed to the floor surface 2 and can move along a partition slide regulating groove 5 provided in parallel with both longitudinal ends of the top surface of the loading platform 1. Therefore, the partition 4 can move in the back-and-forth direction in the carrier 2 together with the sliding of the floor surface 2.

In this case, the movable range of the floor surface 2 is an endless track since the floor surface 2 moves (rotates and slides) like a crawler. On the other hand, the movable range of the partition 4 is a range allowed to move by the partition slide regulating groove 5, that is, a range allowed to move in the longitudinal direction distance of the carrier 1. Accordingly, the movable range of the floor surface 2 is an endless track without the partition 4,
Since the partition 4 is fixed to the floor 2, the partition 4 is in a slidable range after all.

As shown in FIG. 2, a position sensor means 7 is mounted on a front inside portion of the loading platform 1 and a limit switch 6 is mounted on a rear inside portion. The position sensor means 7 includes a light projecting unit 7a for projecting a red light beam and receiving its recursive reflected light, and a reflector unit for returning the projected red light beam to the original light projecting unit 7a. 7
b.

The light projecting section 7a and the reflector section 7b are
It is installed at an appropriate location in front of the side inner wall of the loading platform 1 so as to be parallel to and facing each other. Preferably, it is installed at the lower front position of the inner side wall of the loading platform 1, that is, at a position slightly above the floor surface 2, so that at least the luggage loaded on the floor surface 2 blocks the light of the light emitting unit 7a. In this case, it is possible to detect the case and the case where the screen 4 blocks the light of the light projecting unit 7a.

However, the partition 4 may be installed at an upper position on the inner wall of the side of the loading platform 1 so that detection can be performed only when the partition 4 blocks the light of the light projecting portion 7a (see FIG. 2). In the present invention, the light emitting unit 7a uses a reflection-type photoelectric sensor using a red LED as a light source without using infrared light, but is not limited thereto, and any other type of light sensor can be used. .

FIG. 4A shows the position of the position sensor 7 used in the present invention. Here, for the sake of convenience, a description will be given as a diagram in which the position sensor means 7 is installed at a front upper position on the inner side wall of the loading platform 1.

The reflection type photoelectric sensor as the position sensor means 7 usable in the present invention is preferably as follows. That is, the light projecting unit 7a is a sensor that detects the presence of an object by converting a change in the amount of light received by the reflected light being recursively reflected into a change in the electric signal, and emits red light. an optical window 7a _1, consisting of the light receiving window 7a ₂ Metropolitan for receiving the red light regression reflected by the reflector portion 7b.

[0026] The light receiving window 7a _2, the reflector 7
When the red light reflected by b is received, an electric signal is generated by a photoelectric effect of a built-in semiconductor or the like. Since the electric signal is generated in proportion to the light receiving level, monitoring the output level of the electric signal can be applied as a sensor. That is, when the level is detected to exceed a certain value or more, the partition 4 is set to the light emitting unit 7a.
And a function of detecting that the optical axis between the light source and the reflector part 7b is interrupted.

Next, the limit switch 6 used in the present invention has a minute contact interval and a snap action mechanism.
Contact mechanism that opens and closes at a defined motion and defined force is covered by the case, an actuator 6a ₁ on the outside, a switch made in small, limiting the movement of something (Limit) Switch (see FIG. 4B). As the limit switch 6, the following micro switch is preferable.

First, the spring is fixed in a state in which the spring is bent, and when the contact is switched by an external force, the contact is rebounded by an internal stress (snap operation) to maintain the operation and the restored state. This is a so-called open type micro switch. Second, the actuator 6
performs opening and closing of the magnetic circuit by the operation of a _1, a magnetic flux ON / OFF causes the contacts of the reed switch by the permanent magnets, a so-called inclusion (Reed) Switch type microswitch.

[0029] The limit switch 6, in the case of using any of the open and enclosed switches type microswitch may, when the actuator 6a ₁ is touched by some object, is make the contacts on the inside The switch is closed and turned on. However, the limit switch 6 used in the present invention is not limited to the above-mentioned open type and enclosed type,
Other types of switches such as contact switches, proximity switches, and toggle switches are also applicable.

Next, FIG. 3 (A), the partition 4 is, as a result of contact with the actuator 6a ₁ of the limit switch 6 is moved to the backward limit full represents the state when stopping at that position . Partition 4 at position p (post 4
a) by an input operation from the mobile control box making 3c, slides backward with the floor 2, the contact with the actuator 6a ₁ of the limit switch 6, the spring is actuated by a snap of the actuator 6a ₁ at position p' The contact is made.

As a result, the limit switch 6 is turned on.
As a result, the control signal is transmitted to the control unit 9. With the control signal as a trigger, the control unit 9 controls the driving means 3 (floor slide motor 3b) to stop rotating, so that the movement of the partition 4 is stopped.

Next, FIG. 3B shows that, when the position sensor means 7 is installed at a lower position on the inner side wall of the carrier 1, the partition 4 moves to the front limit as far as possible.
As a result of blocking the light between the light projecting part 7a and the reflector part 7b in the position sensor means 7, the partition 4
(Floor 2) stops. The partition 4 (post 4a) located at the position q slides forward with the floor 2 by an input operation from the movement control box 3c, and blocks the optical axis of the position sensor means 7 at the position q '.

As a result, the position sensor 7 is turned on.
As a result, the control signal is transmitted to the control unit 9. With the control signal as a trigger, the control unit 9 controls the driving means 3 (floor slide motor 3b) to stop the rotation, so that the movement of the partition 4 also stops.

FIG. 1 is a control conceptual diagram of the control unit 9 in the partitioning movement control system of the truck moving cargo handling device of the present invention. The control unit 9 may be configured by an electric circuit combining a plurality of relays (relays) or may be configured by an electronic circuit including a CPU (Central Processing Unit).

For example, when moving (sliding) the floor 2 of the loading platform 1 forward, the operator must use the movement control box 3c.
Pressing the forward switch 3c ₁ provided. Then
The control unit 9 detects that the forward switch 3c ₁ is makeup, opening the valve of forward movement control valve 3d. As a result, the oil flow rate increases, so that the oil pump 3a rotates the floor slide motor 3b in the forward direction. That is, the floor 2 is moved forward. Here, the "forward direction" refers to a direction from the rear part of the carrier 1 toward the front part (driver's seat).

On the other hand, when stopping the floor 2 moving in the forward direction, the worker operates the stop switch 3c of the movement control box 3c.
By pressing the c _2, and sends the make-signal to the control unit 9. The control unit 9,従Gai the make signal received from the stop switch 3c _2, the forward movement control valve 3
d is closed, and the supply of oil to the oil pump 3a is stopped. That is, since the oil flow becomes zero, the oil pump 3a stops the floor slide motor 3b, and the movement of the floor 2 stops.

Furthermore, similarly to the above case to move (slide) the floor 2 of the loading platform 1 in the backward direction, the operator presses the reverse switch 3c ₃ provided in the mobile control box making 3c. Then, the control unit 9 detects that the backward switch 3c ₃ is makeup, opening the valve of the rear direction movement control valve 3e. As a result, the flow rate of oil increases, so that the oil pump 3a rotates the floor slide motor 3b in the opposite direction. That is, the floor 2 is moved rearward.

[0038] When stopping the floor 2 during movement to the rear direction, as before, by the operator presses the stop switch 3c ₂ of the mobile control box making 3c, the control unit 9
A make signal. The control unit 9,従Gai the make signal received from the stop switch 3c _2, closing the rear direction movement control valve 3e, stops oil supply to the oil pump 3a. That is, since the oil flow becomes zero, the oil pump 3a stops the floor slide motor 3b, and the movement of the floor 2 stops.

Next, a case where the partition 4 (floor surface 2) moving forward reaches the limit position of the forward movement range by the position sensor means 7 in the partition movement control system of the truck moving cargo handling device of the present invention. Will be described. However, it is assumed that no luggage is loaded on the front side of the partition 4. The position sensor means 7 is provided on the carrier 1
Is installed at a predetermined location in front of the left and right inner walls (see FIG. 2).

Here, the "limit position of the forward movement range" is, as shown in FIG.
Is a position where a distance that does not cause contact etc. is secured,
The distance is preferably about 10 cm to 180 cm from the inner wall surface of the front end wall, but is not limited to this.

When the partition 4 or its support 4a moves forward with the forward movement of the floor 2 and reaches the limit position of the carrier 1 and blocks the light of the position sensor 7 [FIG. 3 (B)]. ], the amount of light received by the light receiving window 7a ₂ of the light projecting portion 7a is changed. When the amount of change exceeds a predetermined threshold level of the reflection-type photoelectric sensor, the light projecting unit 7a detects that the projected light is shut off,
It is turned on.

When the position sensor 7 is turned on, the control section 9 controls the forward movement control valve 3d to close, thereby stopping the oil supply to the oil pump 3a. [See FIG. 1]. That is, since the oil flow rate becomes zero, the oil pump 3a stops the floor slide motor 3b, and the forward movement of the partition 4 (floor surface 2) is stopped.

When luggage is loaded on the front side of the partition 4, it is better for the luggage in front of the partition 4 to block the light than for the partition 4 moving forward to block the light of the light emitting portion 7a. early. Therefore, in this case, when the luggage moves forward and blocks the light of the light emitting unit 7a, the light emitting unit 7a detects and turns ON, and the movement of the floor 2 is stopped. Things.

Next, the case where the partition 4 (floor surface 2) moving rearward reaches the limit position of the rearward movement range by the limit switch 6 in the partitioning movement control system of the truck moving cargo handling device of the present invention. The detection operation will be described. The limit switch 6 is installed at a predetermined location behind the inner wall on the side of the loading platform 1 (see FIG. 3A).

Here, the "limit position of the rearward movement range" is a distance that does not cause the partition 4 to drop or fly out from the rear door portion, which is the entrance of the carrier 1, as shown in FIG. It is preferable that the distance is about 10 cm to 180 cm from the rear end wall surface (the inner wall surface of the rear door portion) of the loading platform 1, but the present invention is not limited to this.

When the partition 4 or its support 4a moves rearward along with the rearward movement of the floor 2, reaches the limit position of the carrier ₁ and contacts the actuator 6a1 of the limit switch 6 [FIG. (A)], the contact is made. As a result, the switch is turned on, and it is detected that the backward movement of the partition 4 has reached the rearward limit.

Then, the control section 9 controls the rearward movement control valve 3e to be closed, triggered by the limit switch 6 being turned on, so that the oil supply to the oil pump 3a is stopped [FIG. 1]. That is,
Since the oil flow becomes zero, the oil pump 3a
Stops the floor slide motor 3b, and
The backward movement of (floor 2) stops.

When the stop control is automatically performed as described above, the control unit 9 keeps the driving unit 3 stopped even after that, in principle. However, the operator forward switch 3c ₁ or backward switch 3c of the mobile control box making 3c
_When the user presses ₃ (a switch for moving the floor 2 in the direction opposite to the direction in which the floor 2 moved immediately before), the stop state is released, and the floor 2 can be manually operated again.

The partitioning movement control system of the truck loading and unloading device of the present invention can be suitably applied not only to a truck as described above but also to a safety system in various transportation devices. Further, although the oil pump 3a and the like are used in the driving means 3, other electric pumps, water flow pumps, air pumps and the like can be suitably used in the present invention, and any other power may be used to move the floor surface. Good. Although the position sensor means 7 uses a reflective photoelectric sensor using red light, any reflective photoelectric sensor using other types of light can be applied to the present invention.

[0050]

According to the first aspect of the present invention, in a partition movement control system for a truck moving cargo handling device, a bed 1 having a floor surface 2 movable in the front-rear direction by driving means 3 such as an oil pump; A partition 4 fixed to the floor 2 to partition the carrier 1 in the front-rear direction; position sensor means 7 for detecting that the partition 4 has moved to the limit position of the forward movement range; A limit switch 6 for detecting the movement to the limit position, and a control unit 9 for controlling the movement of the floor 2, wherein the position sensor means 7 is provided in front of the left and right inner walls of the loading platform 1;
The limit switch 6 is provided behind an inner wall on one of the left and right sides of the carrier 1. The control unit 9 stops the operation of the driving unit 3 when the position sensor unit 7 or the limit switch 6 is turned on. The use of the partition movement control system of the trucking cargo handling device to be controlled produces the following excellent effects.

That is, since the position sensor means 7 is provided on the left and right inner walls in front of the loading platform 1, even when the door section behind the loading platform 1 is opened for carrying in a load, extraneous light (daylight) can be obtained. ), The possibility of the malfunction of the position sensor means 7 due to the incidence can be remarkably reduced.

In other words, the location where the position sensor means 7 is installed is located in front of the inner wall on the side of the loading platform 1 (the depth of the loading platform 1 as viewed from the operator), so that the outside world entering from the open rear door portion As a result, the possibility that sunlight or the like from reaching the position sensor means 7 becomes extremely low. As a result, the possibility of malfunction of the position sensor means 7 due to reception of sunlight or the like is significantly reduced.

As a result, the possibility that the worker is involved in an accident due to malfunction of the sensor can be remarkably improved, and the safety of the cargo handling work of the automobile is extremely enhanced.

Further, since the position sensor means 7 is provided in front of the inner wall on the side of the loading platform 1, even when the temperature of the outside air is low, the position sensor means 7 is provided.
Since the temperature in the vicinity is at least higher than the outside air, there is less room for malfunction due to low temperature.

As a result, the possibility that the worker is involved in an accident due to malfunction of the sensor can be remarkably improved, and the safety of the cargo handling work of the vehicle is further enhanced.

Next, according to the second aspect of the present invention, in the first aspect, the position sensor means 7 is a partitioning movement control system of a truck moving cargo handling device using a non-infrared reflective photoelectric sensor. Such excellent effects as described above are produced.

First, the use of the reflection type photoelectric sensor as the position sensor means 7 allows the screen to be securely set without performing the optical axis alignment between the light projecting side and the light receiving side unlike the conventional infrared sensor. 4 has the advantage that it can be stopped at a predetermined position by detecting the passage of 4.

More specifically, the reflection type photoelectric sensor is
A reflector unit 7b for reflecting light is provided at a position substantially opposite to the light projecting unit 7a, and is used in a mode in which the reflected light is detected by the light receiving unit 7a.

Accordingly, even if the optical axis of the light projecting portion 7a is not aligned on the light receiving side (reflector portion 7b), even if the light projecting portion 7a and the reflector portion 7b are substantially opposed to each other. Then, the light projecting section 7a can reliably detect the reflected light from the reflector section 7b.

As a result, when the moving partition 4 blocks the light emitted from the light projecting portion 7a, the level of the electric signal of the photoelectric effect at the position is set without performing the optical axis alignment work at the time of installation. Is detected, and the partition 4 can be reliably stopped at that position.

In particular, as described above, since the position sensor 7 does not use infrared rays, the possibility of malfunction due to the incidence of sunlight or the like is further reduced. As a result, the partition 4 (or the floor 2) suddenly moves. The problem that the worker stops (or stops) and has an accident is remarkably improved, and the worker can more safely engage in cargo handling.

Second, as a further effect of using the reflection type photoelectric sensor that does not use infrared light as the position sensor means 7, a frequency modulation circuit or the like for performing frequency modulation becomes unnecessary. There is also an advantage that a room where a malfunction such as the floor surface 2 occurs can be eliminated.

More specifically, in the case of a sensor using infrared rays, the light emitting side transmits infrared rays subjected to frequency modulation (FM modulation) in order to minimize the influence of sunlight or the like. However, in the present invention, since the reflection type photoelectric sensor that does not use infrared rays is used as the position sensor means 7, the frequency modulation circuit can be made unnecessary. As a result, the cause of malfunction can be eliminated. Even under an environment, the movement of the partition 4 (or the floor surface 2) can be favorably controlled.

[Brief description of the drawings]

FIG. 1 is a block diagram of a partition movement control system for a truck moving cargo handling device according to the present invention.

FIG. 2 is a perspective view of a lorry to which the partition movement control system of the truck moving cargo handling device of the present invention is applied.

FIG. 3 (A) is a freight car to which the partition movement control system for a truck moving cargo handling device according to the present invention is applied;
FIG. 3B is a conceptual diagram showing a state in which the screen is controlled to stop when the screen moves rearward and comes into contact with a limit switch. FIG. Conceptual diagram showing a state where stop control is performed when the light of the position sensor means is blocked by moving to the position

FIG. 4A is a perspective view showing a state in which a light projecting unit receives red light reflected back to a reflector unit. FIG. 4B is a perspective view showing a state in which a moving partition contacts an actuator of a limit switch. Action diagram when is pressed

FIG. 5A is a view showing a state in which a plurality of slats are connected by a connecting portion. FIG. 5B is a view showing a state in which a floor surface including a plurality of connected slats is moved (sliding, rotating) by a driving means. Figure showing the appearance of

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Loading bed 2 ... Floor surface 3 ... Driving means 4 ... Partition 6 ... Limit switch 7 ... Position sensor means 9 ... Control part

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yukio Kuramochi 6-9-9 Fukuda, Yamato-shi, Kanagawa Prefecture Inside of 72 Eastern Giken Co., Ltd. (72) Inventor Masaaki Meguro 6-9-1, Fukuda, Yamato-shi, Kanagawa 21 21 Eastern Giken Inside the corporation

Claims (2)

[Claims] 1. A partition movement control system for a truck moving cargo handling device, comprising: a loading platform having a floor surface movable in the front-rear direction by a driving means such as an oil pump; A partition that partitions in the direction, position sensor means for detecting that the partition has moved to the limit position of the forward movement range, a limit switch for detecting that the partition has moved to the limit position of the rearward movement range, and the floor surface The position sensor means is provided in front of the left and right inner walls of the bed, the limit switch is provided behind the left or right side inner wall of the bed, the control unit Is a control device for controlling movement of the truck when the position sensor means or the limit switch is turned on. Vertical movement control system. 2. The system according to claim 1, wherein said position sensor means is a reflection-type photoelectric sensor using non-infrared light.