JPS6016658Y2 - Locking device for spindle type gate hoisting machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a locking device for a spindle-type gate hoist for irrigation and the like.

Conventionally, the spindle-type gate hoisting machine installed on irrigation gates has a spindle whose lower end is attached to the gate screwed into a sleeve rotatably attached to the upper end of the hoisting machine stand. The spindle is rotated by an operating bundle directly or via a bevel gear or the like to move the spindle up and down, thereby opening and closing the gate.

As described above, although this type of conventional hoisting machine has the advantage that anyone can easily open and close it, it also has problems such as easy water theft and children opening and closing it playfully.

In view of the above-mentioned circumstances, this invention was designed to prevent water theft and to prevent operations by persons other than those in charge.In particular, the spindle was fitted with screws and supported on a stand so that it could rotate freely. An arbitrary number of recesses are provided on the outer circumferential surface of the lower end flange of the sleeve, screw holes are provided in the stand or sleeve cover corresponding to these recesses, and the tip of a lock pin screwed into this screw hole fits into the recess. It is characterized in that it is configured to engage.

Hereinafter, this invention will be explained in detail with reference to the drawings showing the structure of an embodiment.

The locking device for the spindle type gate hoisting machine according to this invention includes a sleeve 2 which is rotatably attached to the upper end of the hoisting machine stand 1 around a vertical axis and has a threaded portion 2A on the inner surface of the cylinder. A spindle 3 whose lower end is attached to a gate (not shown) is screwed into the sleeve 2.
In the gate hoisting machine, the spindle 3 is moved up and down by rotating the sleeve 2.
One or more recesses 5 are provided on the outer peripheral surface of the flange 4 formed at the lower end, and screw holes 7 are provided in the stand 1 or sleeve cover 6 corresponding to the recesses 5.
The tip of the lock pin 8 screwed into the recess 5 is configured to fit into the recess 5.

1 to 3 show a first embodiment of this invention, in which a sleeve 2 is supported via a thrust bearing 9 on a flange portion IA projecting inward at the upper end of a stand 1, and a spindle cover 6 is supported on the stand 1. It is fixed by bolts 10 and nuts 11 to a flange portion IB projecting outward from the upper end.

The upper part of the sleeve 2 is fitted into a boss hole 13 of the gate opening/closing operation handle 12 via a key (not shown) or the like, and is fixed to a nut 14 screwed into the upper end.

There are four recesses 5 provided in the sleeve cover 6, and the number of recesses 5 is 90.
Notched grooves are formed at intervals of 100 degrees.

Note that there is one screw hole 7 provided in the sleeve cover 6 corresponding to this recess 5, and the screw hole 7 is at an angle of 90 degrees (1
One alignment peep hole 15 is provided at a pitch of 80 degrees.

Further, the head of the lock pin 8 is provided with a square projection 8A for rotation, and a shaft portion 16A that can be fitted into the screw hole 7 of the lock pin operation bundle 16 as shown in FIG.
It is designed to fit into a notch groove 17 provided at the tip.

Therefore, when operating the locking device of this invention, when the gate is fully closed or partially opened, if the recess 5 is located at the center of the peephole 15, the locking pin 8 is moved by the operating bundle 16. When screwed in, the tip of the lock pin 8 fits into the recess 5, and the gate opening/closing operation bundle 12 will no longer rotate even if an attempt is made to do so.

If, on the other hand, it is desired to release the lock, the tip of the lock pin 8 may be moved out of the recess 5 by rotating the operation bundle 16 in the direction to remove the lock pin 8.

4 and 5 show a second embodiment of this invention, in which a sleeve receiver 21 is provided at the upper end of the stand 1, and within this receiver 21, the flange 4 of the sleeve 2 is inserted from above and below. It is fitted so as to be sandwiched between thrust bearings 22 and 23, and is prevented from coming out by a sleeve cover 6 which also serves as a gear box.

A bevel gear 24 is wedged on the upper part of the sleeve 2, and this bevel gear 24 is meshed with a small bevel gear 26 wedged on the end of a gate opening/closing operation bundle shaft 25 that is pivotally supported on the sleeve cover 6. There is.

Therefore, by rotating the gate opening/closing operation bundle 27, the sleeve 2 is rotated, and the spindle 3 is rotated.
is designed to move up and down.

In this second embodiment, a screw hole 7 into which a lock pin 8 is screwed is shown.
is provided in the sleeve receiver 21 of the stand, and a peephole 15 for positioning is also provided at an interval of 90 degrees from this screw hole 7.

In the second embodiment, components having the same configuration as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

Further, since the lock operation is the same as in the first embodiment, detailed explanation thereof will be omitted.

Since the locking device of the spindle type gate hoisting machine according to this invention is constructed as described above, the structure is extremely simple, the locking operation is easy, and the locking is performed reliably. It is easy to align the lock pin, and the lock pin cannot be rotated with a regular screwdriver or wrench, so it completely prevents water theft and prevents unnecessary opening and closing by children. There are high expectations for its effectiveness as it will make a significant contribution to management.

Note that the recess 5 in this invention is not limited to a notch groove.

Of course, it may be a hole, and the number of holes can be increased or decreased as desired.

[Brief explanation of the drawing]

Figures 1 to 3 show the first embodiment of this invention.
Fig. 1 is a vertical sectional front view, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is a front view of the lock pin operating bundle, and Figs. 4 is a longitudinal sectional front view, and FIG. 5 is a sectional view taken along the line v--■ in FIG. 4. 1...Hoisting machine stand, 2...Sleeve, 2A...Threaded portion, 3...Spindle, 4
...Flame, 5...Locking recess, 6...
...Sleeve cover, 7...Screw hole, end...
...Lock pin.

Claims (1)

[Scope of utility model registration request] A spindle 3 whose lower end is attached to the gate is screwed into a sleeve 2 which is attached to the upper end of the hoisting machine stand 1 so as to be rotatable around a vertical axis and which has a threaded portion 2A on its cylindrical inner surface. In a gate hoisting machine in which a spindle 3 is moved up and down by rotating a sleeve 2, one or more locking recesses are provided on the outer peripheral surface of a flange 4 formed at the lower end of the sleeve 2. 5 is provided,
A spindle type in which a screw hole 7 is provided in the stand 1 or sleeve cover 6 corresponding to the recess 5, and the tip of a lock pin 8 screwed into the screw hole 7 is fitted into the recess 5. Gate hoist locking device.