JPH0313607A - Cross pass control device - Google Patents

Abstract

PURPOSE:To prevent a fatal accident and damage of a bridge plate so as to improve the safety by providing upper and lower sensors on a cross pass control device where a bridge plate capable of rising and facing down is laid on a cross groove formed on a floor. CONSTITUTION:Upper and lower sensors 12, 13 are provided on a cross pass control device where a bridge plate 8 capable of turning in the horizontal posture and in the rising posture is laid over a cross groove 5 formed on a floor 2. When it is confirmed by the upper sensor 12 that there is neither person nor thing on the horizontal bridge plate 8, a fluid pressure cylinder 11 is driven to erect the bridge plate 8, so that an electric motor-driven shutter A or the like is opened to enable passing in the cross groove 5. After it is confirmed by the lower sensor 13 that there is neither person nor thing in the cross groove 5 under the above condition, the shutter A is closed, and the bridge plate 8 is turned in the horizontal state through the cylinder 11 to enable passing thereon.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a bridge plate that is rotatable in a horizontal or upright position and spans a transverse groove formed in a floor, and a vehicle or the like passes over the bridge plate. This invention relates to a cross traffic control device that appropriately switches between the state in which a vehicle or the like passes through a cross groove, and the state in which a vehicle or the like passes through a cross groove.

(Prior Art) Conventionally, the floors of buildings such as factories and warehouses are formed higher than the road surface outside, and a part of the floor is cut low to provide a transverse groove that communicates with the road surface outside. One end of the bridge plate is pivotally attached to the upper edge corner of the stepped part of the floor formed by the floor, and the bridge plate is controlled to rotate from a horizontal position to an upright position by a hydraulic cylinder. has been done.

Normally, when the bridge plate is in a horizontal position, it acts as a bridge over the cross groove, and workers and forklifts come and go on its upper surface, but when vehicles such as trucks cross the building through the cross groove, is in a standing position and opens the transverse groove.

[Problem to be solved by the invention]

The cross groove is wide enough for a truck to pass through,
The bridge plate that spans the top of the bridge is also quite large. Therefore, if the bridge plate is lowered while there is a worker in the cross groove, there is a risk of an accident involving human life, and if the bridge plate is forcibly lowered when there is an obstacle in the cross groove, the bridge plate may be lowered. There was even a risk of damaging the board.

On the other hand, when a worker is on the bridge board or when the bridge board is erected with objects on it,
There was a risk that an accident similar to the one described above would occur.

Therefore, an object of the present invention is to provide a highly safe cross traffic control device.

[Means to solve the problem]

In order to achieve the above object, the present invention has a step section formed by providing a transverse groove at the same level as the ground surface on a floor raised above the ground surface, and one end pivoted to the upper edge corner of the step section. a bridge plate that spans over the transverse groove and is rotated between a horizontal position and an upright position by a hydraulic cylinder; and a bridge plate that opens and closes in the open part of the cross groove to close the passage to the cross groove when the bridge plate is in the horizontal position. Electric shutters A and B can be freely installed,
an openable and closable electric shutter C1D that closes a passage passing over the bridge plate when the bridge plate is in an upright position;
The bridge is equipped with an upper sensor that detects whether there is a person or object on the bridge board that is in a horizontal position, and a lower sensor that detects whether there is a person or object in the cross groove. When transitioning from the state of passing on the board to the state of crossing the cross groove with the bridge board in an upright position, the upper sensor confirms that no person or object is present on the bridge board. Later, by closing electric shutters C and D, electric shutters A~
The bridge plate and the cross groove are shut off from the outside by D, the bridge plate is placed in an upright position by the drive of the fluid pressure cylinder, the electric shutters A and B are opened to open the cross groove, and from this state the bridge plate is horizontally moved. When shifting to a state in which the bridge plate can be passed in the posture, after confirming that there are no people or objects in the cross groove using the lower sensor, the electric shutter is activated by closing the electric shutters A and B. The bridge plate and the transverse groove are isolated from the outside by A to D, and the bridge plate is placed in a horizontal position by the drive of the fluid pressure cylinder, and then the electric shutter C is
, D is provided.

[Effect]

When the vehicle passes over the bridge board in a horizontal position, electric shutters A and B are closed and electric shutters C and D are open. When transitioning from this state to a state where the bridge plate is placed in an upright position and traverses the transverse groove, first,
The upper sensor confirms that there are no people or objects on the bridge board. Here, if the absence is confirmed, the electric shutters C and D are closed. As a result, the bridge plate and the transverse groove are shielded from the outside by the electric shutters A to D. Then, by driving the fluid pressure cylinder to put the bridge plate in an upright position, and then opening the electric shutters A and B, the cross groove becomes passable.

In addition, when shifting from this state to a state in which the bridge plate is placed in a horizontal position so that the bridge plate can be passed on, the lower sensor first confirms that no person or object is present in the cross groove. If the absence is confirmed here, the electric shutters A and B are closed.

This allows the bridge plate and the transverse groove to be connected to the electric shutters A to D.
is cut off from the outside. Then, by driving the fluid pressure cylinder to bring the bridge plate into an upright position, and then opening the electric shutters A and B, the transverse groove becomes passable.

〔Example〕

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

The floor 2 of a building l such as a factory or warehouse is formed one step higher than the road surface (ground surface) outside. Large openings 4 are provided in a pair of opposing side wall surfaces 3 of the building l, respectively.

A transverse groove 5 cut out so as to communicate with the outside road surface is formed in the floor 2 in a portion that is centered on this frontage 4, and a step with steep vertical walls 6, 6 at both ends of the transverse groove 5 is formed. Part 7,
7 is formed.

Bridge plates 8, 8, which span the upper surface of the transverse groove 5, are pivotally mounted to the upper edge corners of the stepped portion 7.7 by means of a shaft 9.9. Each bridge plate 8 is a rectangular plate having a length approximately half the width of the transverse groove 5, and covers the transverse groove 5 in pairs.

Support legs to, 10 are fixed to the tip of the back side of the bridge plate 8, and the bridge plate 8 is supported by the support legs to, to.
is held in a horizontal position to support the load that the bridge plate 8 receives.

On the other hand, the back surface of the bridge plate 8 on the side of the pivot portion and the lower end of the vertical wall surface 6 of the stepped portion 7 are connected by a fluid pressure cylinder 11.11. This fluid pressure cylinder 11.11 is in the most contracted state when the bridge plate 8 is in a horizontal position, and when the fluid pressure cylinder 11.11 is extended, the bridge plate 8 rotates and stands up about the shaft 9.

On the upper surface of the floor 2 and on both sides of the bridge plate top 8, there are pillar-shaped sensor members 12a, 12b, 12c,
12d are erected, and these sensor members 12a to 12d are installed vertically.
12d constitutes the upper sensor 12.

The upper sensor 12 is an optical sensor in which diagonally opposing sensor members 123 to 12d form a pair of a light emitting side and a light receiving side, and the bridge plate 8
It detects whether there is a person or object above it.

On the other hand, sensor members 13a, 13b, 13c, 13d, 13e, 13f are located along the vertical wall surface 6.6 of the cross section /1B5.
are arranged, and these sensor members 13a to 13f
The lower sensor 13 is configured by: The lower sensor 13 is connected to the transverse groove 5 of the sensor members 138 to 13f.
The optical sensors that face each other in the transverse direction constitute a light-emitting side and a light-receiving side, and detect whether a person or object is present in the transverse groove 5.

An electric shutter A is provided in the opening 4.4 of the building 1.

B is provided, which motorized shutters A, B close the opening 44 and the transverse groove 5 when the bridge plate 8.8 is in the horizontal position.

In addition, electric shutters C and D are installed in the back of the bridge board 8.8 in building l.
is for closing the passage to the bridge plates 8, 8 when the bridge plates 8, 8 are in the upright position.

In addition, in the figure 14a, 14b, 14c,
14 d is a sensor member provided on the outside of electric shutters A and H; 15 a, 15 b, 15 c, 15 d, and 15 e;
, I5f, 15g, and 15h are sensor members provided on the inside and outside of the electric shutters C and D, respectively, and these sensor members are auxiliary for ensuring more reliable safety.

The above fluid pressure cylinders 11, 11..., upper sensor 12, lower sensor 13, and electric shutters A to D
etc. are connected to a computer (not shown), and the fifth
Control is performed as shown in the flowcharts shown in Figures (A) and (B).

That is, FIG. 5(a) shows the bridge plate 8.8 from a state where the bridge plate 8.8 is in a horizontal position and the electric shutters A and B are closed to allow traffic over the bridge plates 8 and 8.
It is a flowchart in the case of making the inside of the transverse groove 5 passable by putting it in an upright position.

First, when there is a startup input, the upper sensor 12 is activated (
Step il+), the upper sensor 12 in step (2)
When a person or object is detected based on the detection signal, it is visually confirmed in step (3) and stopped until a start input is received again. In step (2), when a detection signal indicating that no person or object is present on the bridge plate 8.8 is confirmed, the electric shutters C and D are lowered. Then, when it is confirmed in step (5) that the electric shutters C and D are completely closed,
Next, the fluid pressure cylinders 11, 11, . . . operate to rotate the bridge plates 8, 8 in the upright direction. Step (When the sword confirms that the bridge plates 8 and 8 have reached their maximum standing position, the electric shutters A and B rise (Step +81)
Then, in step (9), it is confirmed that the electric shutters A and B are completely opened, and the process ends.

On the other hand, FIG. 5(b) shows the bridge plates 8, 8 from the state where the bridge plates 8, 8 are in the upright position and the transverse groove 5 is open.
12 is a flowchart when the vehicle is placed in a horizontal position and its upper surface becomes passable.

First, when there is a startup input, the lower sensor 12 is activated (
Step 1ll), lower sensor 13 in step (2)
When a person or object is detected based on the detection signal, it is visually confirmed in step (3) and stopped until a start input is received again. When the detection signal that there is no person or object in the cross groove 5 is confirmed in step (2), the electric shutter A,
B descends. Then, when it is confirmed in step (5) that the electric shutters A and B are completely closed, the fluid pressure cylinders 11, 11, . . . operate, and the bridge plate 8.
8 in the horizontal direction. When it is confirmed in step (7) that the bridge plate 8.8 has reached the horizontal position, the electric shutters C and D are raised (step +81), and in step (9) the electric shutters C and D are completely raised. The opening is confirmed and the process ends.

〔Effect of the invention〕

As explained above, according to the cross traffic control device of the present invention, the upper sensor or the lower sensor detects that no person or object is present on the bridge plate or in the cross groove before operating the electric shutters A to D or the prius plate. and furthermore, while the bridge plate is rotating, the electric shutter A
Since the bridge plate is shielded from the outside by D, it is possible to prevent accidents such as people or objects being caught between the bridge plates.

In addition, electric shutters A and B correspond to impassable routes.
Or, because C and D will be closed, the driver may inadvertently collide with the bridge plate in an upright position, or enter the cross groove and collide with the bridge plate while the bridge plate is in a horizontal position. It also has the effect of preventing accidents.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention; FIG. 1 is an overall front view, FIG. 2 is a cross-sectional view taken along line X-X in FIG. 1, and FIG. 3 is a Y-Yll cross-sectional view in FIG. 1. FIG. 4 is a side view of the bridge plate in an upright position, and FIGS. 5(a) and 5(b) are flowcharts. 2...Floor, 5...Transverse groove, 7...Step, 8.
8...Bridge plate, 11.11...Fluid pressure cylinder, 12...Upper sensor, 13...Lower sensor,
A to D...Electric shirt starter Figure 4

Claims (1)

[Scope of Claims] A stepped portion formed by providing a transverse groove at the same level as the ground surface on a floor raised above the ground surface, and one end pivoted to an upper edge corner of the stepped portion to hang over the transverse groove. a bridge plate that is rotated between a horizontal position and an upright position by a hydraulic cylinder; and a bridge plate provided in an open part of the cross groove so as to be openable and closable in order to close the passage to the cross groove when the bridge plate is in the horizontal position. electric shutters A and B; electric shutters C and D that can be opened and closed to close the passage passing over the bridge plate when the bridge plate is in an upright position; It is equipped with an upper sensor that detects whether there is a person or object in the cross groove, and a lower sensor that detects whether there is a person or object in the cross groove. When transitioning to the state of crossing the cross groove, after confirming with the upper sensor that there is no person or object on the bridge plate, the electric shutter A is closed by closing the electric shutters C and D.
～D blocks the bridge plate and the transverse groove from the outside,
The bridge plate is placed in an upright position by the drive of the fluid pressure cylinder, and the electric shutters A and B are opened to open the cross groove. From this state, the bridge plate is then placed in a horizontal position, allowing traffic to pass over the bridge plate. When moving, after confirming that there are no people or objects in the cross groove using the lower sensor, electric shutters A and B are closed to block the bridge plate and the cross groove from the outside by electric shutters A to D. Then, the bridge plate is placed in a horizontal position by the drive of the fluid pressure cylinder, and then the electric shutters C and D are opened.
A cross traffic control device characterized in that it is controlled to open.