JPH0315733Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a locking device for locking the lid of a feed tank or a silo.

[Conventional technology]

BACKGROUND OF THE INVENTION Conventionally, a latch or a padlock is attached to the lid of a feed tank or the like in order to prevent the lid from being opened by wind, animals, etc. and damaging the contents of the tank. In addition, a bonnet lid locking mechanism in which a hook with an engaging groove is biased in the closing direction by a spring and engaged with a U-bolt was developed in 1982.
It is disclosed in Publication No. 51682.

[Problem that the invention attempts to solve]

As mentioned above, latch locks, padlocks, etc. have been used in the past, but as a locking device that satisfies the above purpose, the structure and method of use are complicated, and it is difficult to say that it is a locking device that meets the actual situation. Furthermore, the bonnet lid locking mechanism described in Japanese Utility Model Application Publication No. 59-51682 is biased by a spring, which makes the structure somewhat complicated, and a separate handle must be provided to lift the lid, making it difficult to open the lid. It has the disadvantage of being time consuming.

The present invention has been devised in view of the above-mentioned problems, and its purpose is to provide a lid locking device that is simple in structure and use, and is capable of securely locking the lid.

[Means for solving problems]

The gist of the present invention for solving the above problems is that in a locking device for a lid b of a feed tank a, etc., a flat plate 2
A through hole 3 is provided at approximately the center of the plane of the flat plate 2, an engaging groove 4 having an open end in the width direction of the flat plate 2 is formed below the through hole 3, and the engaging groove 4 is opened from the upper end of the flat plate 2. A substantially U-shaped handle 5 is attached to a side surface that does not have an end to constitute an engagement plate 1, and the engagement plate 1 is rotated through a through hole 3 in a direction perpendicular to the side surface of the lid body b. A substantially U-shaped engagement rod 6 is provided at a predetermined position of an opening c that extends into the feed tank a, etc., and is engaged with the engagement groove 4 by rotation of the engagement plate 1. The locking device of the lid body can be engaged with the mating rod 6.

[Effect]

FIG. 1 is a sectional view showing the operation of the present invention. In the figure, reference numeral 7 denotes a frame, to which bolts 8 are attached which rotatably support the engagement plate 1 through the through holes 3.

When the lid body b is closed, the engagement groove 4 of the engagement plate 1 is engaged with the engagement rod 6, and in this case, the handle 5 is engaged with the engagement groove 4 of the engagement plate 1.
Due to the weight of the hole 3, a moment is generated around the through hole 3 in the direction of the arrow in the figure, and the entire hole is always locked.

To release the lock, lift the handle 5 in the direction of the arrow in the figure to disengage the engagement groove 4 and the engagement rod 6, thereby releasing the lock.

〔Example〕

2 to 5 show an embodiment of the present invention.

As mentioned in the section of the operation, when the lid b is closed, the engagement groove 4 is always connected to the engagement rod 6 as shown in FIG.
It is in a locked state where it is engaged.

On the other hand, when the handle 5 is lifted upward, the engagement plate 1 rotates around the through hole 3, and as a result, the engagement groove 4 and the engagement rod 6 are disengaged from each other as shown in FIG. When the handle 5 is released and the handle 5 is further lifted upward in this state, the lid body b opens.

[Effect of idea]

As described above, according to the present invention, it is possible to obtain a lid locking device that is simple in structure and use and that locks reliably, and furthermore, the locking device can also be used as a handle for opening and closing the lid.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of the present invention;
3 is a front view showing the same in the locked state, FIG. 3 is a front view showing the same in the unlocked state, FIG. 4 is a front view showing the same in the open state, and FIG. 5 is a front view showing the engagement plate. 1... Engagement plate, 2... Flat plate, 3... Through hole, 4... Engagement groove, 5... Handle, 6... Engagement rod, a... Feed tank,
b...Lid, c...Opening.

Claims (1)

[Scope of utility model registration request] In a locking device for a lid of a feed tank, etc., a through hole is provided at approximately the center of the flat plate in the plane, an engagement groove having an open end in the width direction of the flat plate is formed below the through hole, and the upper end of the flat plate is A substantially U-shaped handle is attached to the side surface of the engagement groove that does not have an open end to form an engagement plate, and the engagement plate is rotated through the through hole in a direction perpendicular to the side surface of the lid body. In addition to being movable, a substantially U-shaped engagement rod is provided protruding from a predetermined position of the opening in the feed tank, etc., and the engagement groove is engaged with the engagement rod by rotation of the engagement plate. A locking device for a lid body, which is characterized in that it is possible to do so.