JPS6327483B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic release and automatic locking device for a hoisting machine of a lodging weir.

Conventionally, in automatic lodging weirs, a locking mechanism that stops rotation in only one direction is provided in the interlocking mechanism section of the door body that is linked to the shaft of the hoisting machine, and the locking mechanism is linked to the float, so that when the water level rises, the float When the door rises, the lock mechanism is released and the door body is folded down. However, when the lock mechanism is released, the frictional resistance between the stopper and the gears is large, so the release operation does not proceed smoothly.Therefore, the float must be made larger to increase the releasing force, and the shape of the lock mechanism has to be changed. In addition to increasing the overall size, the stopper had to be manually operated when the door body was raised to lock the hoisting machine, which was a disadvantage in that it required time and effort.

In order to solve the above-mentioned drawbacks, the present invention fixes a ratchet wheel to the shaft of a hoisting machine, and provides cam teeth on a balance cam wheel to which a feed pawl that meshes with the ratchet wheel is pivotally attached, thereby providing other locking functions. This is an automatic locking device in which a pawl is engaged, and the locking pawl is linked with an arm rod and a guide roller mechanism that are connected to a float shaft. This invention is characterized by being able to downsize the door body and other mechanisms, and to automatically lock the door body during the hoisting operation of the shaft of the door hoisting machine.

Hereinafter, the configuration of the present invention will be explained with reference to embodiment figures.

A reducer 2 is installed on one side of the underframe 1, and the hoisting drum 4 of the door whose lower end is pivotally connected to the waterway is fixed to one end of the main shaft 3 of the reducer 2, and the other side of the underframe 1 is fixed. A hoisting system in which a hoisting shaft 6 is pivotally supported in a box 5 installed on the upper surface of the side, and the hoisting shaft 6 is interlocked with the subshaft 3' of the reducer 2 by an endless chain, chain wheel, etc. In the machine 7, a ratchet wheel 8 is fixed to a hoisting shaft 6 in a box 5, an intermediate shaft 9 is arranged in parallel above the hoisting shaft 6, and flanges 11, 1 are attached to both ends of the boss 10.
A fan-shaped weight 12 is provided vertically on the lower surface of the flanges 11, 11', and a feed pawl 1 that engages with the ratchet wheel 8 is provided on the left side of the space below the flanges 11, 11'.
3 is pivoted at the center position with a pin, and the feed pawl 13
The feed-back claw plate 14 is fixed facing the cam tooth 15 at the right position of the upper interval of the flanges 11, 11'.
A balance cam wheel 16 is formed with a fixed balance cam wheel 16, and the balance cam wheel 16 is suspended loosely on the intermediate shaft 9, and the feed pawl 13 on the lower surface is engaged with the ratchet wheel 8. box 5
A pivot 17 is pivotally supported inside, and a U-shaped rod 18 is attached to the pivot 17.
At the same time, a locking pawl 20 is pivotally attached to the tip of the U-shaped rod 18 with a pin 19, and a locking stepped portion 20' at the tip of the locking pawl 20 is engaged with the cam teeth 15 of the balance cam wheel 16. , a plate piece 2 protruding from the outside of the U-shaped rod 18
A shaft piece 22 is provided to protrude outward from the tip of the plate piece 21 to loosely attach the guide roller 23, and a stopper 24 of the locking pawl 20 is provided to protrude inward from the top surface of the tip of the plate piece 21,
A reverse-shaped pressing rod 26 is protruded from a boss 25 hanging loosely on the intermediate shaft 9 behind the balance cam wheel 16, and is opposed to the plate piece 21 at the tip of the U-shaped rod 18.
A guide groove 27 is provided on the outer surface of the guide roller 23.
A rotary automatic locking device 30 is configured in which an arm rod 28 is provided protruding from the boss 25 facing the pressing rod 26, and the upper end of a connecting rod 29, which is provided upwardly from the float, is linked to the arm rod 28. It is something that should be done as much as possible. In the figure, numeral 31 is a manual operating lever for releasing the lock, 32 is a V-shaped lever that rotates the arm lever 28 upward in conjunction with the manual operating lever, and 33 is a winding handle.

Next, the effects of the present invention will be explained with reference to embodiment figures.

Using the hoisting handle 33, the hoisting shaft 6
When the balance cam wheel 16 is rotated clockwise in front view, the feed pawl 13 of the balance cam wheel 16 slips, and the wire connected to the door body is wound around the hoisting drum 4 of the main shaft 3 of the reducer 2 which is interlocked with the hoisting shaft 6. It is made to stand up while immersing yourself in it. Hoisting shaft 6 in standing position
When the rotation of the feed pawl 13 is stopped, the lower end of the feed pawl 13 engages with the ratchet wheel 8 as shown in FIG. It engages with the cam teeth 15 of the balance cam wheel 16 to prevent the rotation of the balance cam wheel 16, and reverses the floating of the locking pawl 20 even when the guide groove 27 of the stamping rod 26 and the guide roller 23 engage with each other. This prevents the door from moving in the upright position.

Next, when the water level of the waterway rises above the collapse water level of the door body, the connecting rod 29 is pushed upward by the float at the lower end, and the arm rod 28 moves upward in the direction of the arrow as shown in FIG. When the pressing rod 26 also rotates upward, the guide groove 27 of the guide roller 23
The locking force is released, and the guide roller 23 slides diagonally upward in the guide groove 27 to engage the locking pawl 20.
is moved back a little and disengaged from the cam teeth 15, and the balance cam wheel 16 rotates a little in the direction of the arrow so that the rear of the locking step 20' of the locking pawl 20 rides on the upper surface of the cam tooth 15. The locking force of the feed pawl 13 is released from the ratchet wheel 8, and the hoisting shaft 6 rotates counterclockwise to lower the door body.
The locking claw 20 that is locked to the cam tooth 15 is disengaged from the guide groove 27 of the pressing rod 26 and the guide roller 2.
Since it is operated by displacing the engaged state with 3, a large force is not required, and therefore, the float that presses the arm rod 28 upward can also be made smaller, and the entire device can be made smaller. The ratchet wheel 8, which is rotating in the opposite direction due to the collapse, slides in contact with the feed-back pawl plate 14 with light pressure, and the water level of the waterway is lowered by the collapse of the door without contacting the feed pawl 13. Even if the arm rod 28 and the mold pressing rod 26 are rotated downward and downward, the locking pawl 20 pivoted inside the U-shaped rod 18
Since the rear part of the tip locking step 20' rests on the cam teeth 15, the door body is not locked, and the door body is completely collapsed to prevent the water level from rising in the event of a flood.

After the lodging is complete, move the hoisting shaft 6 again to the handle 3.
3, the balance cam wheel 16 is rotated to the normal position by the action of the weight 12, and the locking stepped portion 20' of the locking pawl 20 engages with the cam tooth 15 again, and the lock is automatically released. The hoisting shaft 6 is
Even if the rotation of the balance cam wheel is stopped, the ratchet wheel 8 is automatically locked by the balance cam wheel, eliminating the need for manual operation and saving time and effort. .

[Brief explanation of the drawing]

FIG. 1 is a front view of a hoisting machine equipped with an automatic locking mechanism according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.
FIG. 3 is an enlarged plan view of the rotary automatic locking device, FIGS. 4 and 5 are cross-sectional views taken along the line A--A in FIG. FIG. 7 is a side view of the U-shaped rod 18 to be attached, FIG. 7 is a plan view thereof, and FIG.
FIG. 9 is a side view showing No. 8, and FIG. 9 is a plan view thereof.

Claims (1)

[Claims] 1. In a hoisting machine for a lodging weir, a ratchet wheel 8 is fixed to the hoisting shaft, and a feed pawl 13 that engages with the ratchet wheel 8;
A balance cam wheel 16 having a feed-back pawl plate 14 on the lower surface, cam teeth 15 on the upper surface, and a vertically balanced weight 12 is suspended above the ratchet wheel 8,
A U-shaped rod 1 that pivots and projects so as to face the cam teeth 15
The tip locking step 20' of the locking pawl 20 pivoted in the
is engaged with the cam teeth 15, and a guide roller 23 is loosely attached to the outer tip of a plate protruding from the outside of the U-shaped rod 18. A pressing rod 26 of a mold opposite to the molding rod 18 is provided protrudingly, and a guide roller 23 is fitted into a guide groove 27 on the outer surface of the pressing rod 26, and a boss 25
This rotary automatic locking device for a hoisting machine for a lodging weir is characterized in that an arm rod 28 is provided protruding from the other end and linked to the upper end of a connecting rod 29 that is provided upwardly from the float.