JPH0342473Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a moving object control device.

In recent years, large display devices with large vertical and horizontal areas, such as scoreboards, electronic bulletin boards, outdoor super-sized televisions, and product display shelves used in stadiums and large gathering plazas, have been converted into electric bulletin boards or illuminated display devices. They tend to be well-received by being popular as fans. However, when trying to install large display devices such as electric or illuminated scoreboards in stadiums, etc., it is currently difficult to install them because it requires a huge amount of cost. The reality is that unless it is expected that it will be used permanently, it is necessary to abandon its installation and use.

For this reason, the present applicant has proposed a removable large-sized display device that can be installed and removed with simple work and can meet requests for temporary use. This is the configuration of a large display device that can be transported freely.
Consisting of a traveling truck having a suitably sized loading platform, and a display mechanism installed on the loading platform of the traveling truck,
The display mechanism has a plurality of display boards, and the plurality of display boards are arranged in the vertical direction, with at least one display board arranged above and the other display board arranged below.

Details of this will be explained below with reference to the drawings.

As shown in FIG. 1, this large display device consists of a traveling carriage 1, a display mechanism 2, an operating mechanism 4, and a power supply device 5.

The traveling trolley 1 has a traveling drive device (not shown) for self-powered traveling, a driver's seat 11, and a loading platform 12 of an appropriate size. And this loading platform 1
2, the display mechanism 2, operation mechanism 4, and power supply device 5 are installed. In addition, this traveling trolley 1
has an outrigger 13 that expands and contracts below the loading platform 12. Therefore, this traveling trolley 1 can be moved to a desired location, and by using outriggers 13 at that location, the inclination can be corrected and sideways shaking and overturning due to wind pressure etc. can be prevented, and temporary can be established.

As shown in FIGS. 2 and 3, the display mechanism 2 includes two display plates 21a, which are a first moving object that is vertically movable, and a display plate 21b, which is a second moving object that is horizontally movable. It has a display board 21. This display board 21 is an outdoor super large television receiver, and has two display boards 21.
are arranged vertically to form a single screen, but instead of this, an electronic scoreboard, an illuminated box-shaped display board, or a product can be used. Of course, it may be used as a display shelf or the like. These two display boards 21a and 21b are formed so that they can be installed vertically, but the connection is limited to one display board 21a.
(lower part in Figure 2, left part in Figure 3) is placed above,
The other display board 21b (upper part in FIG. 2, right part in FIG. 3) is placed below the one display board 21a (see FIG. 4). In order to adopt this arrangement method, one display board 21a is provided with a pair of lift cylinders 22 that extend and contract in the vertical direction. The lower end of this lift cylinder 22 is connected to the traveling truck 1.
The upper end of the lift cylinder 22 is connected to a beam 24 formed on the side of the head of one display board 21a. Furthermore, this beam 24
Considering that the display board 21 is a television receiver, a buffer member 25 such as a leaf spring or a rubber ring is used.
The upper end of the lift cylinder 22 and the beam 24 are connected using bolts. Further, the expansion and contraction operation of the lift cylinder 22 is of course performed in the aforementioned operating mechanism 4, and in particular, the expansion speed of the lift cylinder 22 is synchronized by a flow divider (not shown). be. In order to prevent one of the display plates 21a from swinging laterally around the upper end connecting portion of the lift cylinder 22 when the lift cylinder 22 expands and contracts, a lower end side portion of the one display plate 21a is provided with a side portion of the lower end of the lift cylinder 22. A guide 26 is provided that engages the outer cylinder in a sandwiching manner.

As described above, one display board 21a is configured to be vertically raised and lowered by the lift cylinder 22, but the other display board 21b
One of the display boards 21a is raised forward, that is, vertically, by a pair of pushing cylinders 27.
It is configured to be able to slide downward. That is, the rear end of the pushing cylinder 27 is pivotally connected to the tip of the arm 28 fixed on the cross beam 23 formed on the platform 12 of the traveling truck 1, and the pushing link 29 is attached to the tip of the arm 28. One end of the pushing link 29 is pivotally connected, the other end of the pushing link 29 is connected to the side of the lower end of the other display board 21b, and the tip of the pushing cylinder 27 is connected to the pushing link 29.
The other display board 21b is configured to be able to slide in the front-rear direction (left-right direction in FIG. 2, up-down direction in FIG. 3) by the expansion/contraction operation.
Note that since this other display board 21b slides on the loading platform 12, there is a guide rail 3 on the loading platform 12.
0 is attached, and a plurality of sliders 31 sliding on the upper surface of the guide rail 30 are attached to the other display board 21b.
is formed on the corresponding lower surface of. Further, the operation of the pushing cylinder 27 for sliding the other display plate 21b in the front and back direction is of course performed in the aforementioned operation mechanism 4, and the front and back synchronization of the pushing cylinder 27 is also performed using the flow divider ( (not shown)
This is done by.

As described above, the two display boards 21 are configured so that they can be moved in the vertical direction or in the front-back direction, and can be installed in series. A handle 32 is provided on the top surface of the other display board 21b, and a handle hole 33 is provided on the upper surface of the other display board 21b corresponding to this, so that when one display board 21a is stacked on the other display board 21b, the surface of each display board 21 is the same. Care has been taken to form a surface. In addition, these two display plates 21 are divided into wing bodies 34, 34, and 34, together with lift cylinders 22, pushing cylinders 27, etc. formed on each plate.
It is covered by 34a and 34b. The wing body 34 is attached to a horizontal member 35 which extends in the axial direction of the traveling vehicle 1 and is supported at both ends so as to be openable and closable via a hinge (not shown). However, it is necessary that the lower end of the side wall portion of each wing body 34 hang down to at least the upper surface of the loading platform 12 or the vicinity thereof. That is, this is to prevent rainwater or the like from entering the wing body 34 from the side when the wing body 34 is closed. Further, the horizontal member 35 to which the divided wing body 34 is attached must not be suspended above at least one display panel 21a. That is, one wing body 34a must not become an obstacle when one display panel 21a is raised vertically, as shown in FIG. Preferably, the horizontal member 35 is the other display board 2.
1b (toward the right in FIG. 2). That is, when one wing body 34a is opened, one display board 21
It is preferable that a space for ventilation, etc. be formed at the back of a. It goes without saying that the other wing body 34b can be opened and closed for cooling the inside of the display board 21 or for internal maintenance. Further, an auxiliary wall 36 is formed at the lower end of the wing body 34, and it goes without saying that appropriate waterproofing measures are taken at the abutting portion between the auxiliary wall 36 and the wing body 34. The auxiliary wall 36 itself also serves as the loading platform 12.
It is attached so that it can be raised and lowered freely. Furthermore, although not shown, appropriate fixing means is provided to fix the display boards 21 on the loading platform 12 so that the two display boards 21 do not move vertically or horizontally due to vibrations or the like when the traveling trolley 1 is running. It is being

Therefore, when the display mechanism 2 is not in use, the two display boards 21 can be placed in parallel on the loading platform 12 to keep the overall height of the vehicle within the legal limits, and when in use, the display mechanism 2 can be placed vertically. By making it possible to enlarge the surface of the display board 21 and by providing a wing body, it becomes possible to cover the display board 21.

The operating mechanism 4 is installed on the loading platform 12 of the traveling truck 1 adjacent to the display mechanism 2, and has an appropriately sized operating chamber 41 (see FIG. 1).
Inside the operation room 41 are an operating device for expanding and contracting the outrigger 13 formed on the platform 12 of the traveling truck 1, an operating device for operating the two display boards 21 in series, and an operating device for operating the display board 21. It has an operating device (not shown below) for image reception operation, etc. Therefore, various operations on the operating mechanism 4 can perform various operations such as fixing the traveling trolley 1 at a desired position, opening the wing body 34, vertically connecting the display board 21, and receiving an image on the surface of the display board 21. It becomes possible.

The power supply device 5 is installed on the loading platform 12 of the traveling truck 1 adjacent to the display mechanism 2, and supplies the necessary power to various devices of the operation mechanism 4. It goes without saying that the necessary electric power may be provided by the rotation of the engine for driving the traveling vehicle 1, or may be provided by a storage battery. Therefore, this power supply device 5 makes it possible to use a large display device even if a separate power source is not prepared at the location where the large display device is installed.

The large display device configured as described above is used in the following manner.

That is, the two display boards 21 are placed in parallel on the loading platform 12 of the traveling trolley 1, and the wing body 34 is closed to travel to the destination. After arriving at the destination, the outrigger 13 is extended to a desired installation location to fix the traveling trolley 1. Thereafter, one wing body 34a is opened, and one display panel 21a is moved upward by extending the lift cylinder 22 (see FIG. 4A). This upward movement requires that the other display board 21b reach a height such that it can easily slide below the one display board 21a. . After moving one display board 21a upward, the pushing cylinder 27 is extended to move the other display board 21b forward, that is, one display board 21a is being raised.
Place it below a (see Figure 4b). The other display board 21b, that is, the lower display board 21b, is finely adjusted to determine its installation location, and one display board 21a, that is, the upper display board 21a, is stacked while being finely adjusted. At that time, the handle 32 and handle hole 33
Since the display panel 21 is used, the surfaces of the display board 21 can easily become the same surface (see FIG. 4C). two display boards 2
1, the tip of one wing body 34a, that is, the open end, is slightly lowered to form an eave over the stacked display boards 21.
By forming the eaves, it is possible to cope with rain while the display board 21 is in use, or to prevent sunlight from entering the surface of the display board 21. After completing the continuous installation of the display boards 21 as described above, the display boards 2
1, that is, in this embodiment, the television receiver starts receiving images and is ready for use. After use is completed, the large display device is removed from the desired installation location by performing operations in the reverse order as described above.

By the way, in such a large display device, each display board 21
a, 21b are each a pair of lift cylinders 22
and a pair of pushing cylinders 27. When the display plates 21a and 21b move, each cylinder 2
If the amount of insertion and removal of the lift rods 2 and 27 is not equal, the sides and tips of the display boards 21a and 21b will be
There is a problem in that the cylinder side surface or guide rail is pried, making it impossible to raise or lower the display board.

This invention was made to eliminate this problem, and it ensures that each pair of lift cylinders and pushing cylinders always move in and out by an equal amount, and if the balance is broken, An object of the present invention is to provide a hydraulic system for controlling the posture of a moving object that uses a sub-solenoid valve to correct the posture.

To achieve this objective, this invention has a first moving object that can move vertically and a second moving object that can move laterally, and after lifting the first moving object, move the second moving object. In a control device for a moving object that is moved laterally and placed below a first moving object,
It has a pair of lift cylinders that drive a first moving object and a pair of pushing cylinders that drive a second moving object, and each of the rod side oil chambers of the pair of lift cylinders and the pair of pushing cylinders has a 1. Selectively connected to the pump or tank side via a second main solenoid valve, and each anti-rod side oil chamber of a pair of lift cylinders and a pair of pushing cylinders is connected to a first and second branch flow collection, respectively. selectively connected to the pump or tank via the flow valve and the first and second main solenoid valves, and selectively connected to the pump or tank via the first and second sub-solenoid valves, respectively. , the first sub-solenoid valve is switched and controlled by a signal from a limit switch that detects the verticality of the first moving object, and the second sub-solenoid valve is switched by a signal from a limit switch that detects the parallelism of the second moving object. It is characterized by being controlled.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 5 is a hydraulic system diagram of the attitude control hydraulic system. In the figure, 22a and 22b are a pair of lift cylinders that support the upper front and rear ends of the display board 21a, and 27a and 27b are pushing cylinders that support the lower front and rear ends of the display board 21b. The lift cylinders 22a and 22b have the same structure, and have two rod side oil chambers 33a and 34a and an anti-rod side oil chamber 33 separated by pistons 32a and 32b inside the cylinders 31a and 31b.
b, 34b, and lift rods 35a, 35b which are integrally provided with the pistons 32a, 32b and can move in and out of the cylinders 31a, 31b. 36
is an oil passage connecting the oil chambers 33a and 33b; an oil passage 37 is connected to this oil passage 36;
7 is connected to a tank 40 via a first main solenoid valve 38 and a drain oil passage 39. 41 is a filter connected to the drain oil path 39;
42 is a throttle adjustment valve connected to the oil passage 37.

On the other hand, 43 is the main solenoid valve 38
Deco valve (divider, collect,
The oil is divided into two parts via check valves 44a and 44b, respectively, and sent to each oil chamber 34a, 44b.
34b. Note that these check valves 44a and 44b are opened and closed according to the oil pressure (pilot pressure) in the oil passage 36. Also,
The deco valve 43 is connected to a hydraulic pump 47 via an oil passage 45, the main solenoid valve 38, and a supply oil passage 46, and a parallel valve consisting of a check valve 48 and a throttle adjustment valve 49 is connected in the middle of the oil passage 45. Oil line is connected.

50 is a first sub-solenoid valve, and the drain oil passage 39 and the supply oil passage 46 are connected to the Deco valve 4 through this solenoid valve 50.
3 and check valves 44a and 44b, respectively. 51 is an engine that drives the hydraulic pump 47, and 52 is a transmission.

Next, the pushing cylinders 27a, 27b
The cylinders 53a, 53b are connected to the piston 54a,
54b to the rod side oil chambers 55a and 5, respectively.
5b and anti-rod side oil chambers 56a, 56b, and includes lift rods 57a, 57b attached to pistons 54a, 54b. .
The oil chambers 55a and 55b each have a check valve 5.
The oil chambers 56a, 56b are connected to the oil passage 61 via the check valve 5, respectively.
9a and 59b, it is connected to a Deco valve 60, which is a second branching/collecting valve having the same function as described above. This deco valve 60 and the oil passage 6
1 is connected to the supply oil passage 46 and the drain oil passage 39, respectively, via oil passages 62, 63, a second main solenoid valve 64, and a first solenoid valve 38, respectively. In addition, 65 is a throttle adjustment valve connected to the oil passage 62.

66 is a second sub solenoid valve, and the drain oil passage 39 and the supply oil passage 46 are selectively connected to the oil passages connecting the deco valve 60 and the check valves 59a and 59b via this sub solenoid valve 66. It is designed to be able to be replaced. 67a and 67b are the check valves 59a and 59b and the sub solenoid valve 6.
This is a throttle adjustment valve connected to the oil passage connecting 6.

In the figure, 13a and 13b are a pair of outrigger cylinders at the front of the vehicle;
are a pair of outrigger cylinders at the rear of the vehicle,
These are check valves 68a, 68b, 68
c, 68d and control valves 69a, 6
9b, 69c, 69d, the above-mentioned supply oil path 4
6 and a drain oil passage 39.

FIG. 6 and FIG. 7 show each of the above display boards 21a and 2.
This is an attitude detection structure having a limit switch that detects the attitude of the valve 1b and controls each of the sub-solenoid valves 50 and 66. First, FIG. 6 shows the lift rods 35 of the pair of lift cylinders 22a and 22b.
The display board 21a is shown supported at the ends of a and 35b. Here, a limit switch 7 is installed between the inner surface of one lift cylinder 22b and the display plate 21a.
1 is attached, and this limit switch 71 is configured to constantly detect the size of the gap G and detect the verticality of the display board 21a. Also, this limit switch 71 and the solenoids 50a, 50 of the sub-solenoid valve 50
The relationship with b is as shown in FIG. 8, for example. This limit switch 71 is switched to allow current to flow through the solenoid 50a when the gap G is wider than normal, and conversely to flow current through the solenoid 50b when it is narrower than normal.

Next, FIG. 7 shows the pushing cylinders 27a, 2.
Display board 21 is installed at the end of each lift rod 57a, 57b of 7b.
b is attached so that it can be slid horizontally on the guide rail 30 by moving the riffle rods 57a and 57b in and out. Here, 72,
Limit switches 73 are provided between the guide rail 30 and the display board 21b, and are provided on the lower surface of both ends of the display board 21b in the direction of movement. The guide rail 30 and the display board 21b are in elastic contact and the parallelism between the guide rail 30 and the display board 21b can be detected. . In addition, these limit switches 72, 7
3 and the solenoids 66a, 66b of the sub-solenoid valve 66 are as shown in the circuit of FIG. 9, for example. . In this circuit, the open/close states of the limit switches 72, 73 are changed as shown in FIG.
As a result, each solenoid 66a, 66b is selectively energized or deenergized, and the sub-solenoid valve 66 is switched and controlled.

Next, the operation of the above hydraulic circuit will be described.

Now, as shown in FIG.
When pushing up the display board 21a using the valves a and 22b, the solenoid 38a of the main solenoid valve 38 is activated by operating a switch (not shown).
energize. Since the movable part of the main solenoid valve 38 rises, the oil pumped from the hydraulic pump 47 passes through the supply oil path 46, oil path 45, check valve 48, deco valve 43, and check valves 44a and 44b, and then goes to each lift cylinder. 2
The oil is supplied evenly to the oil chambers 34a and 34b of oil chambers 2a and 22b. . For this reason, the pistons 32a and 32b are displaced upward, and each oil chamber 33a and 3
The oil in 3b is returned to the tank 40 via the throttle adjustment valve 42, the main solenoid valve 38, and the drain oil passage 39. Then, due to this operation, the lift rods 35a and 35b rise and lift the display board 21a. Conversely, when lowering the display plate 21a, the solenoid 38b of the main solenoid valve 38 is energized and its movable part is raised to connect the oil passage 45 to the drain oil passage 39 and open the oil passage. 37 is connected to the supply oil line 46. Therefore, the oil pumped from the hydraulic pump 47 is transferred to the oil passage 37.
The oil is supplied to the oil chambers 33a, 33b of the lift cylinders 22a, 22b through the oil chambers 33a, 33b. . In this case, when the oil pressure in the oil passage 36 reaches a predetermined value or more,
Check valve 44 uses this as pilot pressure.
a, 44b are opened, and each oil chamber 34a, 3
The oil in the tank 4b passes through the throttle control valve 49 and is slowly returned to the tank 40 via the drain oil passage 39. In general, the display board 21a is raised and lowered in horizontal balance by two lift cylinders 22a and 22b that operate in synchronization, but due to external factors such as differences in left and right frictional resistance or differences in assembly precision, one is more difficult than the other. It also gets higher and lower.

In such a case, the limit switch 71 shown in FIG. 6 is activated, and the above-mentioned tuning control is executed with high precision.

That is, in FIG. 6, when the lift rod 35b becomes higher than the lift rod 35a and the lower corner of the display plate 21a is about to pry the inner surface of the lift cylinder 22b, the limit switch 71
switches to the right in Fig. 8, and the solenoid 50a
will be energized. . Therefore, the movable part of the sub-solenoid valve 50 shown in FIG.
Sub solenoid valve 50, throttle adjustment valve 70a,
The oil passes through the check valve 44a and is supplied to the oil chamber 34a of the lift cylinder 22a. Therefore, the piston 32a moves upward, and the oil pressure in the oil chamber 33a and the oil pressure in the oil passage 36 rise. When these oil pressures reach the set pressure or higher, the check valve 44b is opened using this as the pilot pressure. Therefore, the oil in the lift cylinder 34b is returned to the tank 40 through the check valve 44b, the throttle adjustment valve 70b and the drain oil passage 39. For this reason,
When the lift rod 35b of the lift cylinder 22b is lowered by supplying oil to the oil chamber 33b, the lift rod 35a of the other lift cylinder 22a is raised, and the heights of both lift rods 35a, 35b are balanced. , the constant switching state of the sub solenoid valve 50 by the limit switch 71 is returned to the state shown in FIG. 5, and the balance control operation is stopped. Note that the same control operation as described above is performed when the lift rod 35a is moved up and the lift rod 35b is lowered.

Next, when the display plate 21b is moved horizontally by the pushing cylinders 27a and 27b, the solenoid 64a of the main solenoid valve 64 is energized by operating a switch (not shown). Therefore, the movable part of the main solenoid valve 64 moves upward, and the oil pumped by the hydraulic pump 47 is transferred to the supply oil path 46, the main solenoid valve 38,
The flow is divided into two parts through the main solenoid valve 64, oil passage 62, throttle adjustment valve 65, and deco valve 60,
Further, through each check valve 59a, 59b, the oil chamber 5 of the pushing cylinder 27a, 27b
6a and 56b. Therefore, each lift rod 57a, 57b protrudes from each cylinder 53a, 53b, and the display plate 21b protrudes. Further, the return operation of the display panel 21b is performed in the same manner as the display panel 21a by energizing the solenoid 64 of the main solenoid valve 64 and lowering the movable portion.

On the other hand, the pushing cylinders 27a and 27b
This does not necessarily apply to synchronized operation, but there is a problem in that one side extends too much than the other, causing a part of the display board 21b to pry the guide rail 30. In this case, the limit switches 72, 73 shown in FIG. 9 are activated, and the pushing cylinders 27a, 27b are activated.
The tuning operation is performed with high precision.

That is, when the side surface of the display board 21b and the guide rail 30 are parallel to each other as shown in FIGS. 7 and 10a and 10b, the limit switches 72 and 73 are both set as shown in FIG. state, and neither of the solenoids 66a and 66b is energized, so the sub-solenoid valve 66 stops applying hydraulic pressure to each of the pushing cylinders 27a and 27b.

However, as described above, if the parallel state is broken, either the limit switch 72 or 73 is activated, and the solenoid valve 66 is activated. If the display board 21b is now in the state shown in FIG. 10b, the limit switch 72 is turned off.
Solenoid 66a is energized. Therefore, the oil from the hydraulic pump 47 passes through the supply oil path 46, the sub-solenoid valve 66, the throttle adjustment valve 67a, and the check valve 59a, and then goes to the pushing cylinder 27a.
The oil is supplied to the oil chamber 56a. Therefore, the piston 54a is pushed out, the lift rod 57a protrudes, and the oil in the oil chamber 55a is removed from the check valve 5.
Check valve 58a, oil passage 61, and check valve 58b opened in response to pilot pressure on side 9a
through the oil chamber 55b of the pushing cylinder 27b.
is supplied to Therefore, the piston 54b is pushed, its lift rod 57a contracts, and the oil in the oil chamber 56b passes through the check valve 59b, which is opened under pilot pressure, the throttle adjustment valve 67a, the sub-solenoid valve, and the drain oil passage 39. It is returned to the tank 40. Therefore, the posture of the display board 21b shown in FIG. 10b is controlled by the synchronized operation as shown in FIG. 10b.

On the other hand, when the display panel 21b is in the state shown in FIG. , just by changing the direction in which the oil flows through the pushing cylinders 27a and 27b, by the same action as above,
Attitude control of the display board 21b is performed.

In this way, these sub-solenoid valves 5
0 and 66 are lift cylinders 22a and 22, respectively.
b synchronized operation and pushing cylinder 27a,
The synchronization operation of 27b is backed up and the display board 21
To ensure safe and reliable movement control of a and 21b.

As described above, according to the present invention, the scoreboard,
To reliably install moving objects such as electronic bulletin boards, super large indoor televisions, and large product display shelves at desired positions. In this case, even if the synchronized operation of the multiple cylinders that control the moving object goes out of order,
By operating the limit switch and switching the sub-solenoid valve to detect the deviation while it is small, the operation of the cylinder can be backed up and the deviation can be corrected, allowing the moving object to move smoothly. Effects such as tightening and improving reliability of operation can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a large transportable display device according to an embodiment of the present invention, Fig. 2 is a partial cross-sectional view showing a part of this large display device, and Fig. 3 is a diagram showing this large display device. A vertical cross-sectional view showing the device; Figures 4A, B and C are vertical cross-sectional views showing the use of the large display device; Figure 5 is a hydraulic system diagram of the attitude control hydraulic system;
Fig. 6 is an explanatory diagram showing the relationship between the lift cylinder and the display plate, Fig. 7 is an explanatory diagram showing the relationship between the pushing cylinder and the display plate, Figs. 8 and 9 are control circuit diagrams of the sub-solenoid valve, FIG. 10 is an explanatory diagram showing the operating form of the limit switch shown in FIG. 9. DESCRIPTION OF SYMBOLS 1... Traveling trolley, 2... Display mechanism, 12... Loading platform, 21a, 21b... Display board, 22a, 22b
... Lift cylinder, 27a, 27b ... Pushing cylinder, 38, 64 ... Main solenoid valve, 43, 60 ... Deco valve, 50, 66
...Sub solenoid valve.

Claims (1)

[Claims for Utility Model Registration] (1) A first moving object that is vertically movable and a second moving object that is horizontally movable, and after the first moving object is raised, the second moving object is moved. In a control device for a moving object that moves laterally and places the moving object below a first moving object, a pair of lift cylinders that drive the first moving object and a pair of lift cylinders that drive a second moving object are provided. The rod-side oil chambers of the pair of lift cylinders and the pair of pushing cylinders are selectively connected to the pump or tank side via first and second main solenoid valves, respectively. The anti-rod side oil chambers of the lift cylinder and the pair of pushing cylinders are selectively connected to a pump or a tank via first and second flow dividing valves and the first and second main solenoid valves, respectively. and selectively connected to the pump or the tank via first and second sub-solenoid valves, the first sub-solenoid valve being switched by a signal from a limit switch that detects the verticality of the first moving object. A moving object control device characterized in that the second sub solenoid valve is switched and controlled by a signal from a limit switch that detects parallelism of the second moving object. (2) A limit switch that detects the verticality of the first moving object is installed between the lift cylinder and the first moving object to detect the size of the gap between the two, and detects the parallelism of the second moving object. A control device for a moving object according to claim 1, wherein the limit switch is provided between the first moving object and the guide rail to detect parallelism between the two.