JPH0215869Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is designed to keep the floor surface of the cargo space and the top surface of the platform on the same level when loading and unloading cargo into the cargo space of a truck or the like using a forklift or the like. A luggage compartment position adjustment device for cargo handling work that can improve the efficiency of loading and unloading work by flattening the luggage compartment and moving the luggage compartment to an appropriate position by changing the position of the luggage compartment in its width direction. It is related to.

BACKGROUND TECHNOLOGY Conventionally, when a forklift or the like is used to load cargo such as a container into the luggage compartment of a vehicle such as a container truck from a platform, or to unload it onto a platform, the methods shown in Figs.
As shown in Figure 1, the forklift 1 is in the cargo area 2.
and platform 3.
A gangplank 4 is spanned between the two.

In addition, in a normal vehicle, when the cargo 5 is loaded, the tires are deformed and the chassis springs are deflected, lowering the vehicle height.
is set lower than the floor surface 7 of the luggage compartment 2.

Problems to be Solved by the Invention However, in the past, the gangplank 4 was simply passed between the luggage compartment 2 and the platform 3. Inclined due to the ups and downs of
Also, the slope changes constantly. Therefore, each time the forklift 1 crosses the gangplank 4, unless the forklift 1 performs various operations such as tilting, lifting up or down, decelerating or stopping, and changing the operations, the cargo will not touch the gangplank 4, the floor or ceiling of the cargo area. I come into contact with it.

For example, FIG. 8 shows a situation where the lower part of the cargo 5 has come into contact with the gangplank 4, but in order to avoid such an accident, the forklift 1
At the same time as the deceleration or stop operation, a tilt operation must be performed as shown in FIG. 9, or a lift-up operation must be performed before the deceleration or stop operation.

In addition, Fig. 10 shows a situation in which the upper part of the cargo 5 hits the ceiling of the cargo compartment 2, for example, the cargo compartment of a container truck, but in order to avoid such an accident, the cargo should be stopped in the middle of the gangplank 4. tilt or lift down operations must be performed.
That is, the position of the baggage 5, which has been changed by lift-up or tilt operation in the state shown in FIG. 9, must now be further changed by performing the reverse operation. Only through such operations can the luggage 5 be safely stored in the luggage compartment as shown in FIG. 11.

As described above, conventionally, the forklift 1 has to be operated frequently and in a variety of ways, which requires time and effort for cargo handling operations, and increases the risk of damage to the cargo.

Furthermore, as shown in FIG. 11, in order to increase the loading rate of the cargo 5, there is as little gap as possible between the cargo 5 and the cargo compartment wall, and the forklift 1 is not allowed to enter or exit the cargo compartment 2. This may cause the cargo to vibrate due to deformation of the tires, etc.
For this reason, the above-mentioned cargo handling work has become even more troublesome.

Furthermore, in recent years, luggage has become larger in order to improve the filling rate of luggage compartments and the efficiency of packing operations, and in many cases they are approximately the same size as the frontage of the luggage compartment. In such cases, when loading cargo with a forklift, the forklift driver's forward visibility is poor, and the stopping position of the cargo compartment may vary from side to side.
Workability has decreased significantly. For example, the driver must stop the forklift every time the forklift enters the cargo compartment and check the positional relationship between the cargo compartment frontage and the cargo, and when using an unmanned forklift, there are restrictions on correcting the driving course. In order to stop the vehicle in the correct position, it is necessary to repeatedly stop the vehicle.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides at least one vehicle height platform installed on the ground corresponding to the cargo area of the vehicle at the end of the platform for loading and unloading work. A regulation lift is installed, and the upper surface of the platform is set at a higher position than the floor of the vehicle luggage compartment before lift-up, and at the end of the platform, there is a gangplank that spans the floor of the luggage compartment. , a chassis support beam that is long in the vehicle width direction is fixed to a portion of the vehicle height regulating lift that is rotatable with the end side as a pivot point, and that is in contact with the vehicle; , a slide portion is disposed so as to be movable in the vehicle width direction, and the slide portion is coupled to a piston rod of a hydraulic cylinder fixed to the chassis support beam, and is lifted up by the vehicle height regulating lift. A sensor detects a position where the gangplank, which rotates with the movement of the floor surface of the luggage compartment of the vehicle, is substantially flush with the top surface of the platform and issues a signal to stop the vehicle height regulation lift. The hydraulic cylinder is fixedly installed at a fixed location other than the hydraulic cylinder, and detects when the rear part of the luggage compartment of the vehicle, which is moved in the vehicle width direction by the sliding part, reaches an appropriate position and sends a stop signal to the hydraulic cylinder. The system uses a configuration in which the emitting sensor is fixedly installed at a fixed location outside the vehicle.

Operation When the cargo compartment of the vehicle comes to a stop close to the loading/unloading end of the platform, the gangplank rotates toward the cargo compartment.
It is hung at the rear end of the cargo compartment. The top of the platform is set higher than the floor of the cargo area, so
The gangplank slopes slightly downward.

Next, when the vehicle height regulation lift is operated and the luggage compartment of the vehicle is lifted, the gangplank also rotates upward in synchronization with it. When the gangplank is flush with the top surface of the platform, a sensor detects its position and issues a vehicle height regulation lift stop signal, and the lift stops and maintains its position.

In this state, the top surface of the platform, the gangplank and the floor of the cargo compartment form almost the same plane, and
The cargo compartment will no longer move up and down or vibrate, regardless of the amount of cargo.

In addition, if the cargo compartment is not stopped at an appropriate position in the width direction, the vehicle height regulating lift contacts the lower part of the vehicle and starts lifting operation, and then the slide section operates to move the rear part of the cargo compartment. Make the entire vehicle swing in one direction along the width direction. When the rear part reaches the proper position, the sensor prompts it and issues a signal to stop the drive of the slide.

After such operations, cargo handling work using the forklift begins.

Embodiment Next, an embodiment of the present invention will be described based on FIGS. 1 to 7.

In FIGS. 1 and 2, the reference numeral 8 is a platform, and at the end where trucks etc. arrive and depart,
A stopper 9 is installed to restrict the rear end of the vehicle and stop the vehicle at a fixed position. In this case, the upper surface 10 of the platform 8 is set at a higher position than the floor surface 7 of the luggage compartment 2 of the vehicle before lift-up. Although the height of the floor surface 7 of the luggage compartment 2 differs depending on the vehicle model, vehicle manufacturer, etc., the top surface of the platform is formed higher than the general height before lift-up of the entire platform, and the height of the floor surface 7 of the luggage compartment 2 is It is formed higher than the height.

Reference numeral 11 designates a span plate provided at the end of the platform 8, and as shown in FIG. 12, and its length is set to such an extent that it protrudes slightly ahead of the stopper 9, and the protruding portion 1
1A is formed into a thin plate shape, and is designed to prevent a large level difference from occurring between it and the floor surface 7 of the luggage compartment 2.

As shown in the second figure, the span plate 11 is mechanically rotatable, and one end of a bell crank-shaped lever 13 rotatably supported by the shaft 12 is moved at an appropriate position between both ends of the span plate 11. The other end extends toward the platform 8 and is connected to a rod 15 of a hydraulic cylinder 14 provided in a cavity in the platform 8.
The shape and size of the lever 13, the stroke of the rod 15, etc. are set so that the spanning plate 11 can be rotated between positions A and C.

Therefore, when the rod 15 of the cylinder 14 acts to protrude, the spanning plate 11 is pushed up by the lever 13 from below and stops rotating to position A. Conversely, when the rod 15 is retracted, the spanning plate 11 is pushed up by the lever 13.
It rotates downward together with the rotation of , and reaches position C. At this time, the cargo compartment floor 7 of the vehicle is at position D, and the protrusion 11A of the spanning plate 11 rests on the rear end of the cargo compartment floor and stops, while the lever 13 is further rotated slightly over by the rod 15. It stops after releasing the gangplank 11.

A vehicle height regulating lift 16 is installed on the ground below the luggage compartment of the vehicle stopped at the position D, as shown in FIG.

This lift 16 is shown in more detail in FIGS. 3 and 4. In these figures, reference numeral 17 is a base in contact with the ground 18, and on this base there are two
A hydraulic cylinder 19 is provided so as to be able to rise and fall. That is, the lower part of the cylinder 19 is connected to the base 17 via a shaft 20, and a block 21 is fixed to the middle part, and this block 21 and the base 17 are connected to the hydraulic cylinder 22 and the rod 23. are connected.

Therefore, when the luggage compartment 2 of the vehicle arrives, the hydraulic cylinder 22 is retracted and the rear bumper 2 of the vehicle is pushed down from the solid line position to the chain line position in FIG.
4 etc., and after the bumper 24 etc. has passed, the cylinder 22 is extended to the solid line position.

The thrust of the cylinder 19 is, for example, per one cylinder.
10 tons, two cylinders 19 rods 25
A chassis support beam 26 for supporting the vehicle's chassis is spanned between them to integrate them, and both cylinders 19 are also connected by a cross beam 27 to strengthen their integration. In addition, the above-mentioned chassis support beam 26
and the horizontal beam 27, the upper end is the chassis support beam 26.
Two guide rods 29 are provided on the left and right sides, and the lower part thereof is inserted into the bearing 28 of the cross beam 27. Thereby, the hydraulic cylinder 19 is protected from the horizontal force caused by starting and stopping the forklift on the loading platform of the vehicle. Further, a rotating shaft 30 is spanned between the two blocks 21, and a counter gear 31 is pivotally attached to both ends of the rotating shaft 30, and a rack 32 hanging from the chassis support beam 26 is engaged with this. As a result, even if an unbalanced load is applied due to a differential between the two hydraulic cylinders 19, an unbalanced load, a shift in the stopping position of the vehicle, etc., the operations of the rods 25 of both hydraulic cylinders 19 are always synchronized. , the seat etc. lifted by the lift 16 will not be tilted.

In addition, in FIGS. 3 and 4, reference numeral 33 is a liner installed above the chassis support beam 16, the upper part of which is curved so that the load is applied to the center of the cylinder 19, and the liner that protects the chassis. It is made from a softer resin material. Also, code 3
Reference numeral 4 denotes a cover that is stretched between the base 17 and the chassis support beam 26 so that it can be unrolled and inserted in a blind manner.
When it falls down to the chain line position due to the action of step 2, it is unwound and covers the cylinder 19, guide rod 29, etc., and prevents muddy water, snow and ice, etc. adhering to the shaft etc. from splashing on it, thereby preventing rusting of the equipment and damage to the cylinder. be.

The lift 16 may be made movable by providing wheels under the base 17 (not shown), and may be moved to the side each time a vehicle enters or leaves the lift 16. In this case, cylinder 1
9 may be fixed upright on the base 17, and the shaft 20 and cylinder 22 may be omitted.

In addition, the lift 16 is buried in the ground directly below the vehicle departure and arrival position together with the base 17, and when the vehicle approaches, the rod 25 is pulled to retract the chassis support beam 26 below the ground, and after the vehicle approaches, it protrudes to the ground. (not shown). In that case as well, the shaft 20 and cylinder 22 can be omitted.

After the vehicle has stopped, the lift 16 is brought into a state in which it starts lifting the chassis by first operating the cylinder 22 to raise the chassis support beam 26 and the like from the chain line position to the solid line position using the shaft 20 as a fulcrum. Then, by operating the cylinder 19, the chassis support beam 26 pushes up the chassis of the vehicle from below. During this time, the base 17 supports the entire load of the vehicle, lift, etc. via the lower end of the cylinder 19,
Further, the guide rod 29, counter gear 31, etc. prevent the two rods 25 from twisting. Then, when the cargo compartment floor surface 7 of the vehicle rises to a predetermined height, the cylinder 19 stops driving and is held at that position for a predetermined period of time. Therefore, during this period, the vehicle becomes almost unaffected by deformation of the chassis spring, tires, etc.

The lift 16 is interlocked with the gangplank 11, and is provided with a control device for this purpose.
As shown in FIG.
In this case, it is fixedly installed on the stopper 9. This sensor 35 is a limit switch, and
The contact point is closed or opened by being pushed by a dog 36 provided at the bottom of the contact point. The mounting positions of the sensor 35 and the dog 36 are set so that the dog 36 touches the sensor 35 when the spanning plate 11 is substantially flush with the upper surface 10 of the platform 8.

In addition to the sensor 35, the control device is also equipped with an operation panel (not shown), and the cylinder 19 of the lift is started by operating the operation panel, and the dog 36 is connected to the sensor 35. cylinder 19 of the lift based on the signal generated when touching the
It also has a function to stop the. The specific content of this control device is a known technical means, so a description thereof will be omitted. In addition, the sensor 3
In addition to the limit switch, 5 can be replaced with a light emitter/receiver made of a phototube or a proximity switch, or a similar effect can be obtained by attaching an angle meter using an inclinometer or potentiometer to the gangplate 11. Yes (not shown).

As mentioned above, in the state where the protruding portion 11A of the spanning board 11 is placed on the rear end of the cargo compartment floor 7 of the vehicle, the dog 36 is initially moved when the spanning board 11 reaches position B from position A in FIG. The sensor 35 is actuated, an actuation signal for the cylinder 19 is output, and the spanning plate 11 occupies the position C, so that it is separated from the sensor 35 and occupies the position F.

Due to the output of the actuation signal of the cylinder 19 mentioned above,
When the cylinder 19 of the lift 16 is driven by operating the operation panel, the loading platform floor 7 rises from position D to position E, and when the gangplank 11 rotates and comes to position B, the dog 36 returns to the sensor position. Hit 35. As a result, a signal for stopping the lift 16 is issued in the control device, the driving of the cylinder 19 is stopped, and the cargo compartment floor 7 is held at position E.

At this time, since the length of the vehicle and its luggage compartment is quite large compared to the length of the gangplank 11, the ground 1
8 is flat, it can be seen that the gangplank 11 and the cargo compartment floor 7 are substantially on the same plane.
If it is necessary to further improve the accuracy of this coplanarization, it is possible to set a plate under the front wheels of the vehicle in advance, or create a slope on the ground (not shown). .

In addition to the above-mentioned vehicle height regulation lift, the present invention is provided with a means capable of moving a stopped vehicle in its width direction, and this means is provided with a vehicle height regulation lift as shown in FIGS. 3 and 4. It consists of a slide section 37 provided integrally with the lift 16, and a sensor 38 as shown in FIGS. 6 and 7 that generates a signal used to control the slide section 37.

The slide portion 37 is provided with two beds 39 on the left and right sides, each of which is made of a plate-like member to which the liner 33 is fixed. Both beds 39 are connected by a connecting rod 40, and a force is applied to one side by driving a hydraulic cylinder 41 fixed to the chassis support beam 26.
The upper part of the chassis support beam 26 is used as a guide rail so that it can reciprocate along the longitudinal direction of the chassis support beam 26 by a predetermined distance. Since the vehicle height regulating lift 16 is of a collapsible type, the hydraulic cylinder 41, the bed 39, etc., when the lift 16 collapses to the chain line position as shown in FIG.
It is installed in a size and position that does not interfere with the bumper 24 and the like. In addition, the output of the hydraulic cylinder 41 is, for example, 400 when the cargo space 2 is empty.
The weight of the forklift truck 1, which has a total weight of about 8 tons, is set to 39 kg when moving in and out.
It is necessary to consider the force applied in the sliding direction of the bed 39 and make it strong.
etc., are provided with a known locking mechanism (not shown).

The sensor 38 in this case consists of three limit switches 43, 44, 45 installed horizontally in parallel on the vertical wall 42 of the platform 8, and is activated by a detection unit 46 that moves with the movement of the side wall of the cargo compartment 2. It is becoming more and more like this.

In this case, the detection unit 46 is located on the extension line of one side wall 47 of the luggage compartment 2 at the proper position where the luggage compartment 2 should be stopped, and uses the connection point with the support member 48 standing at a predetermined location on the platform 8 as a fulcrum. A rotary rod 49 that can be rotated in the horizontal direction is provided, and a rod 5 protruding from a cylinder 50 installed on the platform 8 is located at an intermediate position of the rod 49.
An arm 53 equipped with a dog 52 for turning the sensor 38 ON and OFF is connected to a portion overlooking the sensor 38, and an arm 53 equipped with a dog 52 for turning the sensor 38 ON and OFF is connected to the tip thereof. shaped contact piece 5
4 is fixed. Further, a guide piece 55 extending in the horizontal direction is fixed to the middle of the arm 53, and a support piece 56 for supporting the guide piece 55 from below is fixed to the vertical wall 42 of the platform 8 facing the arm 53. The three limit switches 43 mentioned above,
44, 45 are arranged so that when the middle one 44 is pushed by the dog 52, the contact piece 54 comes into contact with the rear end of the cargo compartment side wall 47 in the proper position, and the left and right ones 43, 45 is placed a little apart from the middle object 44 so as not to touch the dog 52 when the middle object 44 is pressed by the dog 52.

Therefore, while the vehicle is moving, the rotating rod 49 of the detection unit 46 is rotated backward by the action of the cylinder 50 to the position indicated by the chain line in FIG. 37 or the movement of the connecting plate 11 or independently, the cylinder 50 is operated to rotate to the solid line position. Therefore, when the side wall 47 is at the proper position 57 as shown in FIGS. 5 and 7, the extension line of the side wall 47 is the rotation rod 4.
9, the dog 52 immediately reaches the position shown in FIG. In that case, no cylinder drive signal is issued to the slide portion 37. but,
When the side wall 47 is stopped at the position 58, only the limit switch 43 on one side is pressed, and as a result, the cylinder 41 is driven in the direction of moving the bed 39 in the direction of arrow A, and the dog 52 is moved to the position shown in FIG. You will be stopped when you arrive. Conversely, when the side wall 47 stops at position 59, the limit switch 45 on the other side is pressed, and as a result, the cylinder 41 is driven to move the bed 39 in the direction of arrow B, and the dog 52 is moved in the same manner as above. It will be stopped when it reaches the position. If a locking mechanism is provided, it will be locked at this point. In addition,
When the slide portion 37 operates, the rear wheel 60 of the vehicle
is floating, and the vehicle can be rotated horizontally using the front wheels (not shown) as a fulcrum without receiving much resistance. In addition, as the sensor 38, in addition to a limit switch, a photocell,
A proximity switch or the like may also be used. Also,
The slide portion 37 receives a signal from the sensor 38.
Since the control unit for operating the cylinder 41 uses known means, its explanation will be omitted.

Next, a series of operations of the cargo compartment position adjustment device for cargo handling work will be described.

First, the luggage compartment 2 of the vehicle approaches the stopper 9 as indicated by the chain line D in FIG. Next, the driver of the vehicle or forklift operates the operation panel to bring the lift 16 into the upright position as shown in FIG. 4, and before and after that, also operates the cylinder 14 by operating the operation panel. The gangplank 11 at position A is rotated to position C. In position C, the gangplank 11 is released from the lever 13 and is supported downward by the luggage compartment 2.

Thereafter, the cylinder 19 of the lift 16 is driven by operating the operation panel, and the chassis support beam 26 is raised to lift the luggage compartment 2 of the vehicle to position E. Along with this, the gangplank 11 also rotates upward around the shaft 12, and the dog 36 also moves from the chain line position F to the solid line position G, and the limit switch 35 causes the gangplank 11 to be flush with the platform top surface 10. Detected. Based on the detection signal from the limit switch 35, the driving of the cylinder 19 of the lift 16 is stopped, and the chassis of the vehicle is in a state in which the luggage compartment 2 on the rear wheel 60 side shown in the first diagram is tilted and floated with the front wheels (not shown) as a fulcrum. is maintained. Since the length of the luggage compartment 2 is considerably larger than the length of the spanning board 11, the top surface 10 of the platform 8, the spanning board 11, and the floor surface 7 of the luggage compartment are substantially on the same plane. Moreover, lift 1
Since it is supported by 6, its state hardly changes even if external force is applied. Therefore, as shown in Fig. 1, the forklift 1 holds the cargo 5,
It is possible to move back and forth between the platform 8, gangplank 11, and luggage compartment 2 without performing any tilting operations.

Further, the cylinder 50 is moved at a predetermined time such as in conjunction with the movement of the gangplank 11 or after the lift 16 has been raised.
is driven to rotate the rotating rod 49 from the chain line position in FIG. A judgment will be made. That is, when the central limit switch 44 is pushed by the dog 52 as shown in FIG. A lamp or the like (not shown) is used to indicate that the condition is appropriate. When only the limit switch 43 is pressed, a signal is issued from the control section after the rear wheel 60 has risen, and the cylinder 41 is activated to slide the bed 39 in the direction of arrow A.
is activated, and conversely, limit switch 45 is activated.
When is pressed, the limit switch 4 is driven to slide in the direction of arrow B.
It will stop when 4 is pressed. As a result, the luggage compartment 2 is swung to the left or right using the front wheels (not shown) as a fulcrum, and after changing its posture, it reaches its proper position. At this point, the floor surface 7 of the cargo compartment 2 is also flush with the top surface 10 of the platform 8, so the driver of the forklift 1 does not change the course after reaching the fixed position on the platform 8. In both cases, the luggage 5 can be carried into the luggage compartment 2.

In addition, it is desirable to draw marks, lines, etc. on the course from the fixed position on the platform top surface 10 to the gangplank 11 in a place that can be seen by the forklift driver, or to provide a guide (see Fig. (not shown).

When the cargo handling work is completed, the lift 16 is lowered by the reverse operation to the above, and the rear wheels 37 of the vehicle are grounded.
The lift 16 is brought down, the bed 39 is returned to its original position, and the gangplank 11 is further flipped upward. The vehicle then leaves platform 8.

Effects of the invention Since the present invention has the above-mentioned configuration and function, it is possible to make the floor surface of the luggage compartment of the vehicle, the gangplank, and the top surface of the platform almost on the same plane, and even when a load is applied to the luggage compartment, the tire It is possible to eliminate the relationship with deformation, etc., and prevent vibrations from occurring in the luggage compartment. Moreover, after the vehicle has stopped, the position of the rear part of the luggage compartment in the width direction can be changed and finely adjusted to reach the appropriate position. Therefore, when loading and unloading cargo using a forklift, etc., there is no need to frequently repeat operations such as tilting, lifting up, down, and decelerating the forklift. This eliminates the need to repeatedly check the position of the frontage and correct the course.

This also means that even if the size of the cargo is set to minimize the gap between the inner wall of the container and the cargo, it is possible to improve the efficiency of cargo handling operations and prevent damage to the cargo. This means that it is possible to suitably prevent this, and when an unmanned forklift is used, it is possible to avoid frequent vehicle loading and unloading operations to bring the luggage compartment to the proper position.

[Brief explanation of the drawing]

Figures 1 to 7 show an embodiment of the luggage compartment position adjustment device for cargo handling work according to the present invention, and Figure 1 shows the positional relationship between the device and the luggage compartment of a vehicle lifted by the device. FIG. 2 is a partially cutaway side view showing an enlarged view of the gangplate portion of the device; FIG. 3 is a partially cutaway front view of the vehicle height regulation lift in the device, with the left half in the lift-up state. , the right half shows the lift-down state, FIG. 4 is a partially cutaway side view, FIG. 5 is a plan view showing means for moving the cargo space in the width direction, FIG. 6 is a side view, and FIG. Figure 7 is a sectional view taken along the - line in Figure 6;
Figures 8 to 11 are explanatory diagrams of conventional cargo handling operations, with Figure 8 being a side view when crossing the gangplank with the forklift in its standard state, and Figure 9 being a side view of crossing the gangplank by performing a tilt operation. case side view,
FIG. 10 is a side view showing the relationship with the container when crossing the gangplank in the state shown in FIG. 9, and FIG. 11 is a side view showing the state in which the container is about to enter the container by performing a tilt operation. 1: Forklift, 2: Loading platform, 5: Luggage,
7: Floor, 8: Platform, 9: Stopper,
10: Top surface, 11: Gangplank, 16: Lift, 1
9: Cylinder, 25: Rod, 26: Chassis support beam, 35: Sensor, 37: Slide part, 38: Sensor, 39: Bed, 41: Cylinder, 46: Detection part, 47: Side wall, 49: Rotating rod, 52: Dog.

Claims (1)

[Scope of utility model registration request] At least one vehicle height regulating lift is installed on the ground below the vehicle luggage compartment at the end of the platform for loading and unloading work, and the upper surface of the platform is located above the floor of the vehicle luggage compartment before being lifted up. At the end of the platform, a gangplank extending over the floor of the luggage compartment is provided so as to be rotatable about the end, and the platform is set at a position higher than the vehicle height. A long chassis support beam in the vehicle width direction is fixed to the part of the regulation lift that contacts the vehicle, and a sliding part is arranged on the top surface of the chassis support beam so as to be movable in the vehicle width direction. , the gangplate is connected to a piston rod of a hydraulic cylinder fixed to a chassis support beam and rotates in accordance with the movement of the floor surface of the luggage compartment of the vehicle that is lifted up by the vehicle height regulation lift; , a sensor that detects a position that is substantially flush with the top surface of the platform and issues a stop signal for the vehicle height regulating lift is fixedly installed at a certain location other than the vehicle; The present invention is characterized in that a sensor is fixedly installed at a fixed location other than the vehicle to detect when the rear part of the luggage compartment of the vehicle being moved in the direction has arrived at a proper position and to issue a signal to stop the hydraulic cylinder. Cargo compartment position adjustment device for cargo handling work.