JP3330184B2 - Locking hatch opening and closing mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hatch opening / closing mechanism used for a man lock, a material lock, and the like provided in a pneumatic caisson method.

[0002]

2. Description of the Related Art In a conventional lock hatch opening / closing mechanism, a jack 101 and a support shaft 103 for supporting a lever are mounted on an inner wall of a lock 100 as shown in FIG. A lever 104 is attached to the support shaft 103. One end of the lever 104 is pin-connected to the rod 102 of the jack 101, and a hatch 105 is pin-connected to the other end.

In the conventional hatch opening / closing mechanism, a hatch 105 is opened / closed via a lever 104 by controlling the expansion and contraction of a rod 102 of a jack 101.

[0004]

In the prior art, the operation of the rod 102 of the jack 101 is directly transmitted to the lever 104, and the lever 104
Is opened and closed. Therefore, it is necessary to use the jack 101 having a large stroke, and it is necessary to provide a large lever 104.

As a result, in the prior art, since the opening and closing mechanism of the hatch becomes large, a large storage space is required, and there is a problem that the lock 100 becomes large, and the lock 100 becomes heavy and a large crane is required for outfitting. There was a problem that required. There is also a problem that a large amount of air is consumed as a driving source of the jack 101, and a large air supply facility must be provided.

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above points, and has as its object to reduce the size and weight of a lock, thereby reducing the size of the lock.
An object of the present invention is to provide a lock hatch opening / closing mechanism capable of reducing air consumption.

[0007]

In order to achieve the above object, the present invention is applied to a pneumatic caisson method.
Double-sided hatch that opens and closes on the pneumatic chamber side for various locks
In the closing mechanism, a hatch 1 disposed inside the lock.
8 near the wall on both sides of the center and substantially parallel to the lock axis direction
The jack 2 is installed in the
The first shaft and the second shafts 6, 12 are rotatably supported, and the first shaft
The shaft 6 is not co-planar and rotatable with
One arm 7, a second arm 8 longer than the first arm 7
Attach the first arm 7 to the rod 3 of the jack 2
Connected to the second shaft 12 so as to be rotatable integrally therewith.
3. Attach the fourth arms 13 and 14, and
Connecting part provided substantially in parallel with jack 2 arranged substantially in parallel
One end of the material 10 and the other end of the connecting member 10 to the second arm 8
Pivoted, the fourth A over arm 14 in a substantially central portion of the hatch 18
Achieved the above object by adopting a structure with one end pivoted
are doing.

[0008]

According to the present invention, when the rod 3 of the jack 2 installed inside the lock is contracted or extended, the first arm 7 is moved.
Is driven to rotate in the approach or return direction,
Accordingly, the first shaft 6 and the second arm 8 are moved to the first arm 7
Rotate in the same direction as. When the second arm 8 rotates in the approach direction or the return direction, the third arm 13 is rotated via the connecting member 10 in the approach direction or the return direction.
The arm 14 rotates in the same direction as the third arm 13,
A hatch 18 connected to the arm 14 is opened or closed.

As described above, according to the present invention, the pair of the rod 3 of the jack 2 and the first arm 7, the second arm 8 and the connecting member 1
Since the link mechanism is configured in a two-stage manner by the combination of the first arm 13 and the third arm 13, the jack 2 needs only to have a small stroke, and the length of the fourth arm 14 connecting the hatch 18 is reduced. It can be shortened. as a result,
Since the opening and closing mechanism of the hatch can be reduced in size and weight, the entire lock can be manufactured to be small and lightweight, and the lock can be assembled and disassembled using a small crane.

Further, the stroke of the jack 2 can be shortened, the lock can be made compact, the air consumption can be reduced, and a small air supply facility can be used.

[0011]

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

FIG. 1 shows an embodiment of the present invention, in which a lock portion of a pneumatic caisson is cut away, and FIG. 2 is an enlarged perspective view of a main part.

In the embodiment shown in FIGS. 1 and 2,
In the upper part of the lock 19 of the pneumatic caisson, double-opening hatches 18 are arranged. Each hatch 18 is attached to a hatch opening / closing mechanism 1 provided near a side wall inside the lock 19.

The opening and closing mechanism 1 of each hatch includes a jack 2,
First and second shafts 6 and 12, first and second arms 7, 8,
It is configured by combining the connecting member 10 with the third and fourth arms 13 and 14.

The jack 2 is coupled to the inside of the lock 19 by a pin 4 near the side wall of the ceiling, and is suspended and supported. That is, the jack 2 is locked
Close to the wall on both sides of the center of the hatch 18 placed inside
Therefore, they are arranged substantially parallel to the axial direction of the lock. Ma
The jack 3 has a rod 3 fitted downward.

The first shaft 6 is rotatably supported inside the lock 19 by a bearing 5 attached to a side wall.

The first and second arms 7, 8 are connected to the first arm
It is rotatably mounted integrally with the shaft 6. The first arm 7 is connected to the tip of the rod 3 of the jack 2 via a pin 9. The second arm 8 is formed longer than the first arm 7.

The second shaft 12 is rotatably supported inside the lock 19 by a bearing 11 attached to a side wall near the hatch.

The third and fourth arms 13 and 14 are rotatably mounted on the second shaft 12 integrally therewith. Between the third arm 13 and the second arm 8,
The second arm 8 and the other end of the connecting member 10 are connected by a pin 15, and the third arm 13 and one end of the connecting member 10 are connected by a pin 16. A hatch 18 is connected to the fourth arm 14 via a pin 17.

The hatch opening / closing mechanism 1 configured as described above.
Works as follows.

That is, when the jack 2 is controlled by compressed air and the rod 3 is contracted, the first arm 7 is rotated by the rod 3 in the direction of the arrow a in FIG. As the first arm 7 rotates in the direction of the arrow a, the first shaft 6 and the second arm 8 rotate in the same direction, and the connecting member 10 is pushed up by the second arm 8 in the direction of the arrow c. The third arm 13 rotates in the direction of arrow e. As the third arm 13 rotates in the direction of arrow e, the second shaft 12 and the fourth arm 14 rotate in the same direction, thereby opening the hatch 18.

Conversely, when the rod 3 of the jack 2 is extended, the first arm 7 moves in the return direction in FIG.
Rotate in the direction. Accordingly, the first shaft 6 and the second arm 8
Rotate in the same direction, and the connecting member 10 is
Is pulled down in the direction of arrow d, whereby the third arm 1
3 rotates in the direction of arrow f. As the third arm 13 rotates in the direction of the arrow f, the second shaft 12 and the fourth arm 14 rotate in the same direction, so that the hatch 18 closes.

In the hatch opening / closing mechanism 1,
The rod mechanism of the jack 2 and the first arm 7, and the second arm 8, the connecting member 10 and the third arm 13 constitute a two-stage link mechanism. Combined with the fact that the rod 3 is formed longer than the one arm 7, the amount of expansion and contraction of the rod 3 is transmitted to the third arm 13 in an enlarged manner, so that a jack 2 having a short stroke can be used. In addition, the length of the fourth arm 14 can be reduced. As a result, the hatch opening / closing mechanism 1 can be reduced in size and weight, and the lock as a whole can be made smaller and lighter. Therefore, it is possible to use a small crane when assembling and disassembling the lock.

As described above, since the stroke of the jack 2 can be shortened, the lock becomes compact,
The air consumption can be reduced, so that a small air supply facility can be used.

FIG. 3 is a view showing an example of use of the present invention in which the opening / closing mechanism according to the above embodiment is employed for a material lock hatch.

The material lock shown in FIG. 3 is constructed by connecting a lock lower part 20, an intermediate lock 21, and a lock upper part 22 in series.

The lower hatch 23 provided on the intermediate lock 21 inserted in the lock lower part 20 of the material lock and the upper hatch 24 provided in the lock upper part 22 are shown in FIGS. The hatch opening / closing mechanism 1 according to the embodiment is employed.

As described above, in this embodiment of the present invention, the jack 2 having a short stroke can be used, and the hatch opening / closing mechanism 1 can be made compact. Therefore, the length of the material lock is reduced to the size of the earth and sand bucket. There is an advantage that the length can be reduced to the combined length.

FIG. 4 is a view showing an example of use of the present invention in which the opening / closing mechanism of the above embodiment is employed in a material lock hatch of a pneumatic caisson.

The material lock of the pneumatic caisson shown in FIG. 4 includes an anchoring 27 provided on a slab 26 of a caisson 25, an anchor lock 28, a shaft 29, a lock lower part 30, an intermediate lock 31, and a lock. The upper part 32 is connected and constructed.

A shaft hatch 33 is provided below the shaft 29 inserted into the anchor lock 28, a lower hatch 34 is provided below the intermediate lock 31 inserted into the lock lower portion 30, and a lock upper portion 32 is provided at the upper lock 32. Is provided with an upper hatch 35.

The shaft hatch 33, the lower hatch 34, and the upper hatch 35 are all connected to the hatch opening / closing mechanism 1 shown in FIGS.

Thus, in the example of use shown in FIG. 4, as in the example of use shown in FIG. 3, the entire length of the material lock can be reduced.

Next, FIG. 5 is a view showing an example of use of the present invention in which the opening / closing mechanism according to the above embodiment is adopted in a manlock hatch.

The man lock shown in FIG.
6, a man-only intermediate lock 37, and a lock upper portion 38 are provided in series. And this man lock is made in large size in the division type.

A lower hatch 39 is provided below the man-only intermediate lock 37 inserted into the lock lower part 36, and an upper hatch 40 is provided at the lock upper part 38.

The lower hatch 39 and the upper hatch 40
Is a hatch opening / closing mechanism 1 shown in FIGS. 1 and 2, respectively.
Is joined to.

Also in this use example, since the hatch opening / closing mechanism 1 according to the embodiment shown in FIGS. 1 and 2 can be made small and light, even if the manlock is made large in a split type, a small crane can be used. It is possible to assemble and disassemble using.

The hatch opening / closing mechanism 1 of the present invention can be applied to a hatch such as an air lock. Also,
In this example, an example of using an air jack is described, but the jack may be a hydraulic jack.

[0040]

As described above, according to the present invention, the jack 2 is installed near the side wall inside the lock, and the first and second shafts 6, 12 are rotatably supported via the bearings 5, 11, respectively. The first and second arms 7 and 8 are attached to the first shaft 6 so as to be rotatable integrally therewith, and the first arm 7 is connected to the rod 3 of the jack 2. The third and fourth arms 13 and 14 are attached so as to be integrally rotatable, the third arm 13 is connected to the second arm 8 via a connecting member 10 , and a hatch 18 is attached to the fourth arm 14.
And the rod 3 of the jack 2 and the first arm 7
, The second arm 8, the connecting member 10, and the third arm 13
With this combination, the link mechanism is configured in a two-stage manner, so that the jack 2 needs only a small stroke, and the length of the fourth arm 14 connecting the hatch 18 can be shortened. Since the opening and closing mechanism of the hatch can be made smaller and lighter, the whole lock can be made smaller and lighter. Therefore, there is an effect that a small crane can be used when assembling and disassembling the lock. Since the stroke of the jack 2 can be shortened, the lock can be made compact, and the air consumption of the entire lock can be reduced.
This has the effect that the air supply equipment can be covered by a small one.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a main part of the embodiment shown in FIG.

FIG. 3 is a diagram showing a use example in which the embodiment shown in FIGS. 1 and 2 of the present invention is employed in a hatch of a material lock.

FIG. 4 is a diagram showing a usage example in which the embodiment shown in FIGS. 1 and 2 of the present invention is applied to a hatch of another material lock.

FIG. 5 is a diagram showing a use example in which the embodiment shown in FIGS. 1 and 2 of the present invention is employed in a large-sized manlock hatch in a split type.

FIG. 6 is a front view showing a conventional hatch opening / closing mechanism.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hatch opening / closing mechanism 2 jack 3 rod 5 bearing 6 first shaft 7,8 first and second arm 10 connecting member 11 bearing 12 second shaft 13,14 third and fourth arm 18 hatch 19 lock

Claims (1)

(57) [Claims] 1. A double-sided hatch opening / closing mechanism which opens / closes to a pneumatic chamber for various locks provided in a pneumatic caisson method, wherein a lock shaft center is located on both sides of a center of a hatch 18 disposed inside the lock. direction Ryakujiku parallel to install a jack 2, the first shaft via a bearing 5 and 11 respectively, the second shaft 6,12 rotatably supported rotatably in unison with the first shaft 6 Not on the same plane and the first arm 7,
Attach the second arm 8 longer than the first arm 7 of the
The arm 7 is connected to the rod 3 of the jack 2 and the third and fourth arms 13 and 14 are attached to the second shaft 12 so as to be rotatable integrally therewith, and the third arm 13 is disposed substantially in parallel.
End of the connecting member 10 provided substantially in parallel with the jack 2
Then, the other end of the connecting member 10 is pivotally connected to the second arm 8 to
An opening / closing mechanism for a lock hatch , wherein one end of the fourth arm 14 is pivotally attached to a substantially central portion of the hook 18 .