JPS583858Y2 - Corner drop gate lifting device - Google Patents

Description

[Detailed description of the invention] This invention relates to a lifting device for a corner drop gate for temporarily closing off a waterway, etc. when inspecting or repairing the gate in a dam reservoir, river, etc.

Conventionally, on the upstream side of main gates such as dam reservoirs and rivers, a door groove for corner dropping is provided parallel to the main gate, and a corner dropping gate is dropped into this door groove using a crane or hoist. In addition, a method that increases the amount of water is generally adopted.

However, such work requires the hook of a crane or hoist to be engaged with the hole of the corner drop gate.
This must necessarily be done by a worker underwater, which is dangerous and inefficient.

Therefore, while using a lifting beam,
Various devices have been devised within the lifting beam so that workers do not have to go underwater, but the structure is complex and there are some difficulties in ensuring reliable operation. .

This invention was made in view of the actual situation as described above, and will be described in detail below with reference to the drawings showing the configuration of an embodiment thereof.

In the drawing, 1 is a corner drop gate, and 2 is a lifting beam. This beam 2 includes a beam body 2A having approximately the same width as the corner drop gate 1, and guide members 2B erected at both ends of the beam body 2A. and a chevron-shaped hanging member 2C22C with a hanging ring 3 attached to its upper end.

The corner drop gate 1 has locking protrusions 4 on both sides of the top end 1A.
, 4 are provided in a protruding manner, and a retaining pin hole 5 is provided in the upper part of this retaining protrusion 4 passing through in the width direction of the corner drop gate 1, and furthermore, a bypass valve 6 is provided. There is.

This bypass valve 6 has one end opened at the top end 1A of the corner drop gate 11, and the other end opened at the back (downstream) side 1A of the gate 1.
A valve body 6A consisting of a substantially curved pipe with an opening at B, a plug-shaped valve body 6B that opens and closes the upper end opening of the valve body 6A, and a plug that sandwiches it from the front and rear sides of the valve body 6B. It is composed of two opening/closing operation arms 6D, each of which has one end pivotally connected to the opening/closing operation arm 6C, and a bracket 6F that supports the middle point of the opening/closing operation arm 6D on the gate top 1A via a horizontal pin 6E. .

The free ends of the opening/closing operation arm 6D are brought into contact with each other, and a contact plate 6G is fixed to the upper end surface thereof, and a corresponding valve opening/closing operation protrusion 7 is provided on the lower surface of the lifting beam main body 2A.
is placed in such a way that the contact plate 6G of the arm 6D is pushed down.

The beam main body 2A is provided with engagement holes 8, 8 on its lower side at positions corresponding to the engagement protrusions 4, 4 of the gate 1, and the lower edge of the engagement hole 8 is directed outward. It is expanded so that the protrusion 4 can be inserted smoothly.

The two plates 9 constituting the engagement hole portion 8 are each provided with a locking pin hole 10 passing through them in the gate width direction, and the locking pin hole 10 is located at the center of the beam body 2A. Retaining pin guide and holding tubes 11 protruding to the side are respectively provided, into which engagement pins 12 are fitted.

This retaining pin 12 has rods 14, 14 that are slidably guided by a receiving member 13 provided at the center portion of the beam body 2A.
One end is screwed on.

Approximately half of the length of the rods 14, 14 has threaded portion 1 closer to the pin.
4A is provided, and an adjustment piece 15.15 is screw-fitted into the adjustment piece 15, and a retaining pin operating link 16.
16 is pivotally connected at one end.

Each end of this retaining pin operation link 16 is connected to the beam body 2.
A, and the lower end thereof is attached to an engagement pin insertion/removal operation lever 18 which is pivoted to the lower center of the beam body 2A by a horizontal pin 17, and pins are attached at equal intervals above and below the horizontal pin 17. It is pivoted by 19.20.

Therefore, by operating the lever 18 to the left or right, the engagement pin 12 can be fitted into or removed from the engagement pin hole 5 of the engagement protrusion 4 of the gate 1.

In addition, the upper end of the lever 18 has an operating rope 21, 22.
are connected to each other, and these O-Fs 21 and 22 are
The beam 2 is guided to an operation room above a dam pier (not shown) via a pulley 23 provided at the upper end of the opposite inner side of the guide member 2B.

Guide shoes 24 and 25 are disposed at the upper and lower portions of the outer end surfaces of the left and right lifting beam guide members 2B, and are guided by guide rails in corner drop gate grooves (not shown).

Next, the operation of the lifting device according to this invention will be explained.

First, when lowering the corner drop gate 1 to temporarily close off a waterway, etc., the engagement protrusion 4 of the corner drop gate 1 is fitted into the engagement hole 8 of the lifting beam 2, and then the operating rope 21 is Pull up and move the retaining pin insertion/removal operation lever 18 to the first position.
It is swung to the position shown by the two-dot chain line in FIG.

Then, the links 16 cause the engagement pins 12 to fit into the pin holes 5 of the engagement projections 4, and the corner drop gate 1 and the lifting beam 2 are connected.

Then, the lifting beam 2 is lowered, and the corner dropping gate 1 is dropped into the waterway by the guide member 2B guided by the door groove, and the gate is closed.

Then, pull up the operating rope 22 and release the operating lever 1.
8 is returned to the position shown by the solid line in FIG.
When the beam 2 is pulled up, it is separated from the corner dropping gate 1.

At this time, the valve opening/closing operation protrusion 7 on the lifting beam 2 side separates from the contact plate 6G of the valve opening/closing operation arm 6D, so the valve body 6B of the bypass valve 6, which had been opened until then, descends and the bypass valve opens. 6 is closed and water flow from the bypass valve 6 is prevented.

When hoisting the corner drop gate 1, the engagement pin engagement/disassembly operation lever 18 of the lifting beam 2 should be in the state shown by the solid line in FIG. 1, and the lifting beam 2 should be lowered to engage the gate 1. The mating protrusion 4 is fitted into the engagement hole 8.

At this time, the valve opening/closing operation protrusion 7 of the lifting beam 2 pushes down the contact plate 6G of the valve opening/closing operation arm 6D and moves the valve body 6B upward, so the bypass valve 6 is opened and the water on the upstream side flows through the corner drop gate. 1 and the main gate (not shown), and eventually the water levels above and downstream of the corner drop gate 1 become the same.

Therefore, the operating rope 21 is pulled up, the operating lever 18 is moved to the position shown by the two-dot chain line in FIGS. 5
penetrate inside and engage the two.

In this way, the lifting beam 2 is integrally connected to the corner drop gate 1, and by suspending the lifting beam 2 when the upstream and downstream water levels become the same water level, the corner drop gate 1 is lifted. , the temporary deadline will be lifted.

As described above, this invention is based on a lifting beam 2 that is provided with an engagement hole 8 into which the engagement protrusion 4 protruding from the upper end of the corner drop gate 1 is fitted. An engaging pin 12 that penetrates and connects with the hole 8 is horizontally slidably disposed within the lifting beam 2. Furthermore, the structure is such that the bypass valve 6 provided at the top of the corner drop gate 1 is opened and closed by the contact and separation of the lifting beam 2, so the structure is simple and the operation is reliable. Moreover, it is extremely easy to operate and work can be done efficiently.
The bypass valve 6 can be opened and closed automatically at the same time by connecting and disconnecting from the bypass valve 6, and it also has the advantage of being highly safe.

[Brief explanation of drawings]

The drawings show one embodiment of this invention; Fig. 1 is a front view (view taken along line I-I in Fig. 2), Fig. 2 is a partially cutaway view, and Fig. 3 is a partially cutaway view. is a left side view, Figure 4 is a plan view of the main part of the corner drop gate, Figure 5 is a sectional view taken along the ■-V line in Figure 4, and Figure 6 is a sectional view taken along the VIVI line in Figure 4. be. 1... Corner drop gate, 2... Lifting beam, 4... Engaging protrusion, 5...
・Engagement pin hole, 6... Bypass valve, 8.
...Engagement hole, 12...Engagement pin, 16
...Link, 17...Horizontal pin, 18
・・・・・・Engagement pin engagement/removal operation lever, 21.22...
····rope.

Claims (1)

[Scope of utility model registration request] In a lifting beam 2 having an engagement hole 8 into which an engagement protrusion 4 protruding from the upper end of the corner drop gate 1 is fitted, the engagement protrusion 4 and the engagement hole 8 are horizontally engaged. Matching pin holes 5 and 10 are provided, and an engagement pin 12 that can be inserted into and removed from both of the engagement pin holes 5 and 10 is disposed within the lifting beam 2 so as to be able to slide in the horizontal direction. The pin 12 is connected to a rope, etc. 2 via a link 16, a lever 18, etc.
1.22 A corner drop gate lifting device configured to be driven by.