JPH0324923B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an automatic gate installed in a waterway, etc., and uses a differential gear to reliably operate the gate body.
It was designed to open and close the waterway.

(Problems to be solved by conventional technology and the invention) Various types of automatic gates installed in waterways, etc. have been proposed and implemented in the past, but none of them have sufficient reliability and the water level does not reach the planned level. There was a problem in that even when the water level rose, the door body did not necessarily fall over or lower down.

By the way, differential gears, which are known as mechanical elements, have characteristics such as the gears that make up the gears rotate or stop rotating in conjunction with each other, and are used in various technical fields by taking advantage of these characteristics. .

The present invention was made by paying attention to the characteristics of differential gears, and an object of the present invention is to use differential gears to ensure that when the water level of the waterway rises, the gate body is operated to prevent falls or falls. The purpose is to provide an automatic gate that can be lowered.

(Means for Solving the Problems) The present invention includes a door body 1 that opens and closes a waterway, a drive gear 1 that rotates in conjunction with the opening and closing operation of this door body 1,
An external gear 101 of the differential gear section 10 that engages with this drive gear 11, and two bevel gears 10 that engage with an internal gear 102 provided inside this external gear 101.
3, 104, and a first door operation prevention means 16, 1 which is interlocked with one bevel gear 103 and prevents this bevel gear 103 from rotating in the door operation direction.
7, a first float 19 that floats as the water level rises and releases the door operation blocking state of the first door operation blocking means 16 and 17, and is interlocked and connected to the other bevel gear 104. , second door operation prevention means 25, 26 that prevent this bevel gear 104 from rotating in the door operation direction, and second door operation prevention means 25, 26 that float up due to the rise in water level. By rotating the second float 28 that releases the door block operation state, the external gear 101, and the driving gear 11, the door body 1 is rotated.
handles 20 and 29 are provided to raise the door, and the operating water levels of the first door operation prevention means 16 and 17 and the second door operation prevention means 25 and 26 are different.

(Operation) According to the above configuration, when the water level of the waterway rises,
The door operation blocking state of either the first door operation blocking means 16, 17 or the second door operation blocking means 25, 26 is released, and the door 1 overturns or descends to open and close the waterway. . In this case, even if either one of the first and second door operation prevention means 16, 17 or 25, 26 is malfunctioning and does not operate, the other one will operate, causing the door 1 to fall or descend. do.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded view of an automatic gate according to the present invention, and 1 is a door body, which is installed on a river bed 2 via a hinge part 3 so as to be freely raised. Reference numeral 4 denotes a hoisting drum, in which a hoisting wire 5 for the door body 1 is connected.
is wrapped. The wire 5 goes around a sheave 6 on the side of the door body 1, and its tip is attached to a stopper 7. When the wire 5 is unwound, the door body 1 rotates clockwise and falls over, and the wire 5 is rolled up, the door body 1 rotates counterclockwise and stands up.

Reference numeral 10 denotes a differential gear section (see also FIG. 2 below), which includes an external gear 101, three internal gears 102 mounted inside the external gear 101, and a differential gear section on both sides of the external gear 101. It consists of a pair of left and right bevel gears 103 and 104 that are engaged with and attached to each internal gear 102.

In the differential gear section 10, when the bevel gear 103 is prevented from rotating, the external gear 101 and the bevel gear 104 rotate together in the same direction, and the bevel gear 103 rotates together in the same direction.
4 is prevented from rotating, the external gear 10
1 and the bevel gear 103 rotate together in the same direction, and in a state where both the bevel gears 103 and 104 are prevented from rotating, the external gear 101 has a differential gear characteristic in which rotation is also prevented, Bevel gears 103, 10
4 can rotate independently of each other.

In the above rotational operation, the external gear 10 connected to each bevel gear 103, 104 via the internal gear 102
1 rotates more slowly and at a lower speed than each of the bevel gears 103 and 104. The differential gear section 10 itself is well known. Reference numeral 11 denotes a drive gear that engages with the external gear 101 and is interlockingly connected to the drum 4.

12 is connected to one of the bevel gears 1 via a rotating shaft 13.
It is a chain wheel connected to 03, and an endless chain 14 is wound around it. Reference numeral 15 is a chain wheel around which the other end of the chain 14 is wound, and the chain wheels 12, 15 and the chain constitute a transmission portion P1. This chain wheel 15 is interlocked with a pawl gear 16. 17 is a claw gear 16
The stopper is connected to the first float 19 via the long rod 18, and these members 16, 17, 18, 19 are connected to the first float 19 through the long rod 18.
It constitutes the operating part R of.

In the state in which the stopper 17 is engaged with the pawl gear 16, rotation of the pawl gear 16 in the counterclockwise direction a (the direction in which the door body 1 rises) is allowed, but rotation in the clockwise direction b (the direction in which the door body 1 falls) is permitted. prevent rotation. Further, when the water level rises and the float 19 floats up, the stopper 17 rotates and separates from the pawl gear 16 (see chain line), releasing the state of preventing the door body from falling. That is, the pawl gear 16 and the stopper 17 constitute a means for preventing the operation of the first door. 20 is an operating handle, and by rotating the handle 20, the chain wheel 15 is rotated and the door body 1 is raised.

21 is a chain wheel connected to the rotating shaft 22 of the other bevel gear 104, and this chain wheel 21 and the chain wheel 2
An endless chain 24 is attached to the chain wheel 3, and these chain wheels 21, 23 and the chain 24 constitute a transmission section Q. Reference numeral 25 denotes a pawl gear interlockingly connected to the chain wheel 23, and a second operating section S is constituted by a stopper 26, a long rod 27, a second float 28, and the like. This actuating part S has the same structure as the above-mentioned actuating part R, but there is an overturning water level H1 at which the stopper 17 separates from the pawl gear 16 and the door body 1 falls over, and the stopper 26
A difference is given to the overturning water level H2 at which the door body 1 separates from the pawl gear 27 and the door body 1 overturns. In this embodiment, the water level H2 is set higher than the water level H1.
This difference may be provided by changing the shapes and dimensions of the float 19 and the float 28, but even if the actuating parts R and S are formed to have the same shape and size, there will be variations in molding. etc., it is inevitably given. Reference numeral 29 is an operating handle of the chain wheel 23, and by operating this handle 29, the door body 1 is raised.

This device has the above-mentioned configuration, and the handling operation will be explained next.

When the door body 1 is in the upright state, each pawl gear 16, 2
Each stopper 17, 26 engages with 5 to prevent each pawl gear 16, 25 from rotating in the door body falling direction b.

When the water level rises to water level H1, float 19
floats up and the stopper 17 separates from the pawl gear 16. Then, the pawl gear 16 becomes able to rotate in the door body falling direction b, the wire 5 is wound back in the direction of the arrow, and the door body 1 rotates clockwise around the hinge part 3 and falls onto the river bed 2. do. In FIG. 1, arrow c indicates the direction of rotation of each member when the door body 1 falls. When raising the door body 1 that has fallen down on the river bed 2, operate the handle 20 to raise the chain wheel 1.
5 in the upright direction d of the door body 1.

By the way, even if the water level of the waterway rises to the above-mentioned water level H1, the automatic part R may not operate normally and the door body 1 may not fall due to a failure or malfunction of the equipment. At this time, the water level further rises and reaches the water level H2. Then, the float 28 rises and the stopper 2
6 separates from the pawl gear 25, and the door body 1 falls onto the riverbed 2. Arrow c' indicates the direction of rotation of each member at that time. When the overturned door body 1 is to be erected, the handle 29 may be operated to rotate the chain wheel 23 in the direction d'.

In addition, in the raising operation of the door body 1, the internal gear 1
The external gear 101 connected to the bevel gears 103 and 104 through the bevel gears 103 and 104 rotates slowly at a lower speed than the bevel gears 103 and 104. By simply operating the handles 20 and 29, the door body 1 can be erected slowly and forcefully.

In this way, by utilizing the characteristics of the differential gear 10, this device operates the door body 1 by operating the other door body operation preventing means when one of the door body operation preventing means does not operate. You can definitely knock it down.

The present invention is not limited to the above-mentioned embodiment, and can also be applied to an elevating automatic gate in which when the water level of the waterway rises, the float floats up, and the stopper separates from the pawl gear, the door body descends due to its own weight and closes the waterway. Applicable.

(Effects of the Invention) As explained above, according to the present invention, when the float floats up due to a rise in the water level and one of the two gate body operation prevention means is activated, the door body is activated, that is, it falls over. Since the door body can be lowered or lowered, the door body can be reliably operated even if one of the door body operation prevention means is malfunctioning.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is an exploded view of the automatic gate, and Figure 2 is an exploded view of the differential gear section. 1... Door body, 10... Differential gear section, 101...
External gear, 102... Internal gear, 103... Bevel gear,
104...Bevel gear, 11...Drive gear, 17,2
6... First door operation prevention means, 19... First float, 20, 29... Handle, 25, 26
...Second door operation prevention means, 28...Second float.

Claims (1)

[Scope of Claims] 1. A gate body that opens and closes a waterway, a drive gear that rotates in conjunction with the opening and closing operation of this gate body, an external gear of a differential gear portion that engages with this drive gear, and this external gear. two bevel gears that engage with internal gears provided inside the door; and a first door actuator that is interlocked and connected with one of the bevel gears to prevent the bevel gear from rotating in the door actuating direction. With deterrent means and rising water level, the
a first float that releases the door operation blocking state of the first door operation blocking means; and a first float that is interlocked and connected to the other bevel gear to prevent the bevel gear from rotating in the door operation direction. a second door operation blocking means; a second float that floats up as the water level rises to release the door operation blocking state of the second door operation blocking means; and a second float that rotates the external gear and the drive gear. By doing so, the door body 1
1. An automatic gate comprising: a handle for raising the gate, and wherein the operating water levels of the first door operation prevention means and the second door operation prevention means are differentiated.