JPS6327484B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stopper pawl release guiding device for stopping rotation in one direction of a pawl wheel provided on a rotating shaft of a hoisting machine for a lodging weir.

Conventionally, a ratchet wheel interlocked with the rotating shaft of a hoisting machine for a lodging weir engages a stop pawl that prevents rotation of the ratchet wheel in one direction, and the stop pawl is interlocked with the vertical movement of the float to directly release the pawl. This has the disadvantage that a large frictional force is applied to the stop pawl, making it impossible to remove the stop pawl smoothly, and the shape of the float tends to be large.

In order to solve the above-mentioned problems, the present invention uses a guide roller mechanism to guide the frame rod to which the stopper pawl is pivoted to release when the float is raised, so that the stopper pawl is smoothly moved without applying a large frictional force. This feature is characterized in that the shape of the float can be made smaller because the float can be released.

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

A ratchet wheel 3 is fixed to the hoisting shaft 2 of the hoisting machine 1 of the lodging weir, and a feed pawl 5 is pivoted downward to the intermediate shaft 4 arranged in parallel above the hoisting shaft 2, and a cam tooth is attached upwardly. A balance cam wheel 8 with a weight 7 suspended from the lower end of both sides is fixed, and a feed pawl 5 is engaged with a ratchet wheel 3, and a pivot 9 provided at a diagonally downward position on the right side of the balance cam wheel 8 is mounted. The lower end of a U-shaped rod 10 is pivotally attached, the rear end of a stopper pawl 12 is pivotally attached to the tip of the U-shaped rod 10 with a pin 11, and a locking step 13 is provided on the lower surface of the tip of the stopper pawl 12. A pin 1 is placed above a line that engages with the cam teeth 6 of the balance cam wheel 8 and connects the engagement point of the locking step portion 13 with the center of the pivot shaft 9.
A shaft piece 15 is provided so as to protrude outward from the tip of a plate piece 14 protruding from the outside of the U-shaped rod 10, and a guide roller 16 is loosely attached to the plate piece 14.
Insert the stopper claw's restraining piece 17 inward from the upper surface of the tip.
protrudes from the intermediate shaft 4 behind the balance cam wheel 8.
An inverted pressing rod 19 is placed on the upper surface of the boss 18 that is suspended in the
is fixed and opposed to the U-shaped rod 10, and the pressing rod 19
A guide groove 20 is provided on the outer surface of the guide roller 16.
, an arm rod 21 facing the pressing rod 19 is provided protruding from the other end of the boss 18, and the upper end of a connecting rod 22 protruding upward from the float is linked to the arm rod 21. be.

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

When the hoisting shaft 2 of the hoisting machine 1 is rotated clockwise when viewed from the front, the feed pawl 5 of the balance cam wheel 8 slips on the ratchet wheel 3, and the hoisting shaft 2 is rotated through the reduction gear etc. of the lodging weir. It is made to stand up while winding the wire. When the hoisting shaft 2 is stopped in an upright state, the feed pawl 5 of the balance cam wheel 8 engages with the ratchet wheel 3, as shown in FIG. The locking step portion 13 engages to prevent rotation of the ratchet wheel 3 while maintaining the upright state of the lodging weir. The stopper pawl 12 is pivotally attached to a U-shaped rod 10 with a pin 11 at the end, and a guide roller 16 is engaged with the base of a guide groove 20 of a reversely shaped pressing rod 19 to raise the stopper pawl 12. It prevents
When the water level of the waterway rises above the water level, the connecting rod 22 is pushed up by the float at the lower end, and as shown in FIG. When the locking force of the guide roller 16 by the groove 20 is released, the U-shaped rod 1
0 rotates upward and the stopper pawl 12 moves backward while its rear end rises, so the locking stepped portion 13 engages the cam tooth 6.
By riding on the upper surface of the weir, the locking force of the ratchet wheel 3 is released, and the hoisting shaft 2 rotates counterclockwise to lower the weir body. A stopper pawl 12 pivotally connected to a U-shaped rod 10 is attached to a guide roller 1.
6 is held by engaging the pressing rod 19 with the guide groove 20, and when disengaging, the pressing rod 19 is rotated upward to release the locking force of the stopper pawl 12. , the disengagement operation of the stopper pawl 12 is made smooth, no large frictional force is applied, and the float and hoist can be made smaller to that extent, resulting in cost reductions, and other remarkable effects as mentioned above. It is something that plays.

[Brief explanation of the drawing]

Fig. 1 is a partial plan view of a hoist equipped with a device according to the present invention, Fig. 2 is a sectional view taken along the line A--A, Fig. 3 is a side view of the balance cam wheel 8, and Fig. 4 is its sectional view. A plan view, FIG. 5 is a front view thereof, FIG. 6 is a side view of the stopper pawl mechanism, FIG. 7 is a plan view thereof, FIG. 8 is a side view of the pressing rod and arm lever, and FIG. 9 is a plan view thereof. , FIGS. 10 to 12 are explanatory diagrams showing the disengagement operation of the stopper pawl.

Claims (1)

[Claims] 1. In a stopper pawl mechanism that locks the rotation of the hoisting shaft of a hoisting machine of a lodging weir in one direction, a stopper pawl 12 is pivotally attached to the tip of a U-shaped rod 10 whose lower end is pivoted to a pivot 9 with a pin 11. , the stopper claw 12
A plate protruding from the U-shaped rod 10, with a locking step 13 on the lower surface of the tip locking the rotation of the hoisting shaft, and a pin 11 positioned above a line connecting the locking step 13 and the pivot shaft 9. A guide roller 16 is attached loosely to one piece, and a reverse-shaped pressing rod 19 that can rotate in conjunction with the float is arranged opposite to the U-shaped rod 10, and a guide provided on the opposite surface of the pressing rod 19. A guide roller 16 is fitted into a groove 20 to hold the stopper pawl in place and guide the release of the stopper pawl when the float is raised. Device.