JPS6044446B2 - Floodgate gate lifting mechanism control device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a novel water gate wind body lifting mechanism control device,
Specifically, a wind body end position detection device is placed at each end of the water gate, and the inclination of the wind body during ascending and descending is directly grasped as a position error at both ends of the wind body, and when the position error exceeds a predetermined value, one side is detected. Another object of the present invention is to provide a novel water gate wind body lifting mechanism control device that controls the operations of both wind body lifting mechanisms so that the wind body always moves up and down while maintaining a horizontal state.

Unless the span of a water gate is particularly short, both ends of the gate are usually supported by separate lifting mechanisms.

In the case of such a water gate, each wind body lifting mechanism must be operated so that both ends of the joints that raise and lower the wind body always rise and fall while maintaining the same height. In particular, many of the water gates constructed in recent years have long spans, such as 20 meters or 40 meters, and it is becoming necessary to keep the slope of the wind to a minimum when the water goes up and down. For example, the span is 40 meters, the wind height is 4 meters, and the allowable compression amount of the side water stopper rubber is δ = 10.
For a millimeter water gate, the position error at both ends of the wind body is 10
It must be kept within 0 mm. However, the conventional method is to use a synchronized transmitter to detect the rotation angle of each drum when lifting the ends of the door, or when winding or unwinding the wire around the drum, and then matching the angles. With this method, for example, the wire may overlap when being wound up, or one end of the door body may get caught for some reason when the wire is being fed out. Even if the door body is tilted beyond the limit, this cannot be detected accurately. Furthermore, since the inclination of the gate body to such an extent cannot be discerned even by visual inspection, there is a risk that a serious situation may arise in which the gate body becomes unable to move unless the operation of such a water gate is done carefully. In view of such problems, the present invention attempts to accurately detect the inclination of the door body when going up and down, and to control the operation of each door body lifting mechanism so that the inclination does not exceed a predetermined limit. A gate body end position detection device arranged at each end of the water gate, a position signal comparison circuit for comparing gate body end position signals emitted from the two gate body end position detection devices, and a position signal comparison circuit arranged at each end of the water gate. and an elevating mechanism control circuit that controls the operation of two disposed door elevating mechanisms, and the elevating mechanism control circuit detects when a door end position error signal emitted from a position signal comparison circuit becomes larger than a predetermined value. In this case, the lifting mechanism is controlled to reduce the position error of the door body.

The present invention will be explained below based on detailed embodiments.

In the figure, 1 and 1 are the embankment bodies of the water gates. 2 is a door body, and rollers 4, 4, etc. attached to both ends 3, 3 of the gate body 1,
It is designed to roll in the door groove 5 of 1, and its both ends 3
, 3 are connected to the drums 8, 8 of the gate lifting mechanisms 7, 7, which are arranged at the upper ends of the embankment bodies 1, 1.
The door body 2 is guided by the door groove 5 and moves up and down by being caught in the drums 8 and 8, respectively, or being let out from the drums 8, 8.

Reference numeral 9 denotes a side water stop rubber, one end of which is fixed to the gate body 2, and the other end is tightly attached to the embankment body 1, so that the gate body 2 and the embankment body 1 are connected to each other.
It closes the gap between.

Note that the water gate in this example is symmetrical, as shown in the drawing (
Figures 2 to 8) show only the left bank side.
Therefore, although only one or one set of the above-mentioned wire 6, stopper rubber, door body end position detection device, etc., which will be described later, are shown in the drawings (Figs. 2 to 8), these are not included in the water gate. They are placed at both ends. Note that the arrow FL indicates the water flow direction. Reference numeral 10 denotes door body end position detection devices, and as described above, one set is arranged at each end 3, 3 of the water gate.

One set of door body end position detection devices 10 consists of a measuring plate 11 and a detector 12, one of which is placed on the embankment body 1 side and the other on the door body 2 side.

In this embodiment, the measurement plate 11 is held within a guide body 14 attached to the upstream side wall 13 of the door groove 5 of the embankment body 1, and the detector 12 is guided by the guide plate 14 together with the door body 2. It is designed to move up and down. Details of these detectors 12 and the like are as follows. That is, 15 is a detection head arrangement plate, which has a substantially rectangular plate shape, and as can be seen clearly in FIG. 6, a plurality of metal detection heads 161, 162, 1
63...16n is held.

Reference numeral 17 denotes a roller mounting plate fixed to one end surface in the longitudinal direction of the detection head arrangement plate 15 with a screw 18, and rollers 19, 1 are mounted on both sides of the mounting plate 17 and on the upper side of the upper surface.
9 and 20, 20 are each held rotatably.

21 is also a roller mounting plate, and is fixed to the other end surface in the longitudinal direction of the detection head arrangement plate 15 with screws 22, 22.

Rollers 23, 23 are provided on both sides of the roller mounting plate 21.
However, rollers 24, 24 are each rotatably supported on the other side of the upper surface. 25 is a partition plate;
It is connected to the detector head placement plate 15 via spacers 26, 26 by screws (not shown).

The width of this partition plate 25 is equal to that of the detection head arrangement plate 1.
It is larger than that of No. 5, and one side is jutted out laterally. Reference numeral 27 denotes a thin plate-like cover, and when viewed from the side view (Fig. 5), both sides 28, 28 are roller mounting plates 17, 2.
It is bent so that it slopes towards 1.

Further, the main portion 29 of the cover 27 has a width substantially the same as that of the partition plate 25, and protrudes in the same direction as the partition plate 25. Reference numerals 30, 30 are square rod-shaped support arms, and as seen in FIG. 6, screws 31, 31, .
・Supported by.

Reference numeral 32 denotes a guide block, which is approximately mountain-shaped, and bolts 33, 33,...nuts 34, 34,
. . are fastened together with the partition plate 25, cover main portion 29, and support arms 30, 30 so as to be integral with them.

Further, a guide notch 35 is formed in this guide block 32 from the top to the bottom. In addition, 36,3
6 is a screw 37 on the outer end surface of the roller mounting plates 17 and 21, respectively.
There is a cover plate attached by 37,... The guide body 14 has a substantially C-channel shape, and has an opening 38 on one side.
has.

Roller guide cavities 39, 39 are formed on both sides of the internal space of the guide body 14, and roller guide cavities 39, 39 are separated by substantially C-shaped partition walls, and retaining grooves 40, 40 are formed on both sides of the inner space on the inner side. are formed, and both side edges of the measurement plate 11 are fitted into and held in the holding grooves 40, 40. Thus, the rollers 19, 19 and 23, 23 of the detector 12 are inserted into the roller guide cavities 39, 39 of the guide body 14, and the rollers 20,
20, 24, and 24 are brought into contact with the inner surface of the opening 38 of the guide body 14. As a result, the detector 12 moves in the longitudinal direction of the guide body 14, that is, in the vertical direction of the water gate, with its detection heads 161, 162, . . . 16n maintaining a substantially constant distance from the surface of the measuring plate 11. made possible. 7th
The figures and FIG. 8 show details of the measuring plate 11.

A plurality of strip-shaped sensitive body arrangement zones 41 are arranged in a plurality of rows 4 on the measurement plate 11.
11,41. ...41n are provided. Note that this sensitive body placement zone is a hypothetical zone in which the sensitive body is to be placed, and does not necessarily mean a physically prepared portion such as a recessed portion, for example. These sensitive body arrangement zones 411, 412...
・Metal foils 42 and 4 are respectively attached to 41n as sensitive bodies.
2,... are arranged. In this example,
The number "n" of the sensitive body arrangement zones 41 is "12", and the metal detection heads 161, 162, 16n of the detector 12 detect metal foils 42, 42, . . . at corresponding locations.
・Detector 1 detects the presence or absence of
2 and the measuring plate 11 is detected.

In addition, the figure does not represent the metal foils 42, 42, etc. in all the sensitive body placement zones, nor does it represent the entire length of one sensitive body placement zone, but the alternating binary code has been adopted. Also, as can be seen from Fig. 7, the measuring plate 11
The array of sensitive body placement zones 41 in is very close to each other and can contain a large amount of signal within a narrow width. This is made possible by shifting the arrangement of the detection heads 161, 162, . 8th
The figure shows a cross section of the measuring plate, and the structure of the measuring plate 11 will be explained using this figure.

A base plate 43 is made of, for example, a suitable synthetic resin plate.

Metal foils 42, 42,...
. . are appropriately arranged, and an overlay 44 is applied thereon, whereby the metal foils 42, 42, .
are arranged in a sealed manner between the base plate 43 and the overlay 44. In addition, the sensitive object is not limited to metal foil,
For example, it may be a magnetic material. When a magnetic material is used as the sensitive body, a magnetic detection head is used as the detection head 16. Therefore, as described above, the guide body 14 holding the measuring plate 11 has the longitudinal direction of the measuring plate 11 in the moving direction of the door body 2 (
They are attached to the side walls 13 of the embankment bodies 1, 1 on the upstream side of the door groove along the vertical direction).

Further, the detector 12 is supported by both ends 3, 3 of the door body 2, respectively, and is guided by a guide body 14 to move up and down together with the door body 2. The support in this case is designed to absorb misalignment between the door body 2 and the embankment bodies 1, 1. That is, on the upper earth flow side of both ends 3, 3 of the gate body 2, there is a guide plate 45 extending in a direction perpendicular to the moving direction of the gate body 2, that is, in a horizontal direction, toward the upstream side wall 13 of the door groove of the embankment body. The guide plate 45 has a guide notch 3 of the guide block 32 of the detector 12.
5 are slidably engaged. As a result, even if the door body 2 moves horizontally when the door body 2 moves up and down, the detector 12 can detect the guide body 1 without being unduly affected.
4 and move up and down. Note that the connection cable 46 to the detector 12 is wound around a cable drum 47 when the door body 2 is raised to prevent it from becoming loose. Further, the measuring plate 11 has a predetermined length so as to cover the movement range of the door body 2. FIG. 9 is an example of a block configuration of a control device for a gate lifting/lowering mechanism of a water gate according to the present invention.

In the figure, 101 and 10r are the aforementioned door body end position detection devices, 101 detects the position of the end 3 on the left bank side (right side in Figure 1) of the door body 2, and 10r similarly is the door body 2 The position of the right bank side end 3 is detected. 48 is a position signal comparison circuit, 49 is a door lifting mechanism control circuit, and CS is a control signal applied to the control circuit 49.

501, 50r are motors for rotating the drums 8, 8 of the door body lifting mechanisms 7, 7, 501 is the motor placed in the lifting mechanism 7 on the left bank side, and 50r is the motor placed in the lifting mechanism 7 on the right bank side. show. In this embodiment, the control circuit 49 and the like are housed in a storage box 51 provided at one upper end of the embankment body. For example, if the state in which the gate body 2 is completely lowered and the water gate is closed is set to 0 meters, and a control signal CS indicating "gate body position 2 meters" is applied to the control circuit 49, the control The circuit 49 rotates the respective drive motors 501, 50r so that the drums 8, 8 rotate in the direction in which the wire 6 is wound up.

Changes in the positions of the left and right ends 3, 3 of the door body 2 in the process of being slowly pulled upwards are detected moment by moment by the door body end position detection devices 101, 10r arranged respectively. It will be done. In this embodiment, as described above, each position is represented by a 12-bit alternating binary code, and the two position signals are sent to the position signal comparison circuit 48 via the connection cable 46 and compared. A door body end position error signal ES corresponding to the difference is sent to the control circuit 49. For example, similarly to the above-mentioned example, the end portion 3 of the door body 2,
If the tolerance for position 3 is 100 mm, for example, when the door end position error signal ES emitted from the comparator circuit 48 exceeds 50 mm while the door body 2 is being pulled up, both ends of the door body 2 The rotation of the respective motors 501 and 50r is controlled by the door body elevating mechanism control circuit 49 in order to reduce the positional error of the motors 501 and 50r. Various control methods can be considered. For example, simply stop the motor 50 on the side of the raised end 3 and move it to the position of the raised end 3. The motor 50 on the lower end 3 side may be rotated until the positioning error falls within the above range, or the rotational speed of the two motors 501 and 50r may be changed. Furthermore, the motor 50 on the side facing upward may be temporarily reversed. In this way, the door body 2 is pulled up horizontally without the positional error at both ends 3, 3 exceeding a predetermined value, and the current position of the door body 2 given by the current position signal PS of the door body 2 is and control signal C
It is stopped when the position specified by S, for example, the aforementioned 2 meters, matches, that is, when the door body 2 has been raised to 2 meters. This kind of operation is performed by door body 2.
The same procedure is applied when lowering the .

As explained above, in the water gate lifting mechanism control device of the present invention, door body end position detection devices are arranged at both ends of the water gate, and the positions of both ends of the gate body are directly detected by the respective devices,
A position signal comparison circuit compares the detected position signals at both ends, and if the position error exceeds a predetermined value while the door is being raised or lowered, the door is adjusted so that the position error is reduced by the lifting mechanism control circuit. The system controls the operation of the door lifting mechanisms located at both ends of the door.

Therefore, unlike conventional water gates, there is no longer any risk of an accident occurring due to the inability to accurately detect the fact that the gate body is actually tilted during elevation. It is possible to move the body up and down.

Note that the door body end position detection device is not limited to the one used in this embodiment, and may be of any type as long as it can directly detect the positions of the ends 3, 3 of the door body 2.

[Brief explanation of the drawing]

1 to 4 show an example of a water gate equipped with a device according to the present invention, and FIG. 1 is a front view of the water gate seen from the downstream side, and FIG.
The figure is a sectional view along the line ■-■ in Figure 1, and Figure 3 is a cross-sectional view of Figure 2.
- Figure 4 is an enlarged horizontal sectional view of the door body end position detection device in Figure 3, and Figures 5 to 8 are the door body end position detection device. The details are shown, and Fig. 5 is a side view of the detector, Fig. 6 is a front view of the detector, and Fig. 7 is a side view of the detector.
The figure is a front view of the measuring plate, Figure 8 is a cross-sectional view of the measuring plate, and Figure 9 is a cross-sectional view of the measuring plate.
The figure is a block diagram showing an example of the block configuration of a control device for a gate lifting/lowering mechanism of a water gate according to the present invention. Explanation of symbols, 2... Door body, 3... Door body end, 7... Door body lifting mechanism, 10... Door body end position detection device , 11... Measuring plate, 12...
...Detector, 16...Detection head, 41...
Sensed body arrangement band, 42...Sensitized body, 48...
...Position signal comparison circuit, 49...Elevating mechanism control circuit, ES...Door body end position error signal.

Claims (1)

[Claims] 1. A position signal comparison circuit that compares door body end position detection devices disposed at both ends of a water gate, and door body end position signals emitted from the two door body end position detection devices. and an elevating mechanism control circuit that controls the operation of the two gate elevating mechanisms disposed at both ends of the water gate, and the elevating mechanism control circuit receives the door end position error signal issued from the position signal comparison circuit. 1. A gate body lifting mechanism control device for a water gate, characterized in that the lifting mechanism is controlled to reduce the positional error of the gate body when the position error exceeds a predetermined value. 2 Gate body end position detection devices placed at both ends of the water gate, a position signal comparison circuit that compares the door body end position signals emitted from the two door body end position detection devices, and a position signal comparison circuit located at both ends of the water gate. The door end position detection device includes a lifting mechanism control circuit that controls the operation of the two door lifting mechanisms arranged respectively, and a measuring plate provided on one of the door body or the embankment, and a measuring plate provided on one of the door body or the embankment. and a detector provided on the other side of the embankment body, and a plurality of sensitive body arrangement zones extending along the movement direction of the door body are arranged in multiple rows in parallel on the measurement plate, and each of the sensitive body arrangement zones has a Sensitive objects such as metal foil and magnetic materials are appropriately arranged,
The detector has a plurality of detection heads such as magnetic heads and metal detection heads arranged at locations corresponding to the sensitive body placement zone of the measurement plate, and the detector moves along the measurement plate as the door moves. The lift mechanism control circuit detects the position error of the door body when the door body end position error signal emitted from the position signal comparison circuit becomes larger than a predetermined value. 1. A gate body lifting mechanism control device for a water gate, characterized in that the lifting mechanism is controlled to reduce the amount of water.