CN109853485B

CN109853485B - Hydraulic gate structure capable of adjusting lower suction force

Info

Publication number: CN109853485B
Application number: CN201910219821.7A
Authority: CN
Inventors: 练继建; 盛传明; 刘昉; 马斌
Original assignee: Frontier Technology Research Institute of Tianjin University Co Ltd
Current assignee: Frontier Technology Research Institute of Tianjin University Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2024-02-06
Anticipated expiration: 2039-03-22
Also published as: CN109853485A

Abstract

The invention discloses a hydraulic gate structure capable of adjusting lower suction force, which is applied to the field of hydraulic engineering. The flat gate comprises a cover plate inhaul cable, a water permeable hole, a cover plate, a guide rail, a support ring, an opening, a bottom edge, a longitudinal beam and a cross beam, wherein the flat gate consists of a series of cross beams and longitudinal beams, the cross beam at the bottommost part is provided with the opening, and the support ring is arranged on the opening and used for supporting the cover plate and sealing the opening. The lifting cover plate is arranged above the opening, the cover plate is suspended by the cover plate inhaul cable, smooth guide rails are arranged at four corners of the beam lattice of the cross beam, and the cover plate is restrained by the guide rails when falling down and accurately covers the opening. According to the invention, the bottom cross beam of the gate is provided with the holes, so that the water weight stressed area is reduced, and the holding force of the gate in the initial falling stage is not excessive; when the small opening of the gate cannot be closed, the cover plate on the upper side of the bottom cross beam falls to cover the opening, so that the stressed area of the water weight is increased, namely the lower suction force is increased, and the gate is closed.

Description

Hydraulic gate structure capable of adjusting lower suction force

Technical Field

The invention discloses a hydraulic gate structure capable of adjusting lower suction force, which is applied to the field of hydraulic engineering.

Background

In hydraulic engineering, with the construction of a high-rise dam, the working water heads of the flat gate are gradually increased, such as a hydraulic power station working water head 130m of a brocade level 1, a hydraulic power station working water head 160m of a small bay, a hydraulic power station working water head 165m of a Lash tile and the like. After the flat gate is soaked in water for a period of time, the sliding blocks, the side wheels, the water seal and the like can rust and abrade to different degrees, so that the friction coefficient is obviously increased compared with that of the design. When the flat gate is closed in moving water, the holding force at the initial stage of the falling of the gate is often overlarge and easily exceeds the capacity of the hoist, so that the hoist is damaged; when the opening of the gate is smaller, the thrust of the received water flow is larger, and if the closing force of the gate cannot offset the friction force, the phenomena of blocking and incapable closing of the gate can occur, so that the potential safety hazard is greatly brought. The traditional method is to increase the gate counterweight to overcome the friction force, but the space of the flat gate is limited, so that the flat gate can be used for increasing the counterweight to a limited extent, and after the gate counterweight is increased, the holding force of the gate in the initial falling stage is larger, and the damage to the hoist is easier.

Disclosure of Invention

In view of the above, the invention discloses a hydraulic gate structure with adjustable lower suction force, which is characterized in that a bottom cross beam of a gate is provided with holes, so that the water weight bearing area is reduced, and the holding force of the gate in the initial stage of falling is not excessive; when the gate cannot be closed with a small opening, the cover plate on the upper side of the bottom cross beam falls down to cover the opening, so that the stressed area of water weight is increased, namely, the lower suction force is increased, and the gate is closed.

The technical proposal of the invention

The utility model provides a hydraulic gate structure of suction under adjustable, includes apron cable, hole that permeates water, apron, guide rail, holding ring, trompil, bottom edge, longeron and crossbeam, and this flat gate comprises a series of crossbeams and longeron, is equipped with the trompil on the crossbeam of bottommost, sets up the apron of liftable above the trompil, and the apron is hung by the apron cable, is equipped with smooth guide rail in the four corners department of crossbeam girder check, receives the guide rail constraint when the apron whereabouts to accurately cover the trompil.

Further, a support ring is mounted on the opening for supporting the cover plate and sealing the opening.

Further, each beam of the gate is longitudinally provided with a water permeable hole at a position opposite to the cover plate, and a cover plate inhaul cable connected with the cover plate extends to the upper side of the gate through the water permeable hole and is connected to a winch on the ground for driving the cover plate to lift.

Further, through holes are formed in the positions, opposite to the guide rails, of the four corners of the cover plate, the aperture is slightly larger than that of the guide rails, the guide rails penetrate through the corresponding through holes, and the cover plate can accurately fall onto the support ring to cover the open holes when the cover plate descends.

Further, each longitudinal beam of the flat gate extends to the lower part of the bottommost cross beam to form a bottom edge.

The invention has the advantages and positive effects that:

(1) The bottom cross beam plate is provided with holes, and when the flat gate is closed, the holding force of the gate can be reduced at a larger opening degree.

(2) When the flat gate cannot continuously fall down at a small opening, the opening is covered by the falling cover plate, so that the stressed area of the bottom cross beam plate is increased, and the downward suction force can be increased.

(3) Through setting up the guide rail, make the apron fall along the guide rail, accurately cover the trompil.

(4) Through setting up the rubber support ring, can not damage the crossbeam board when making the apron fall, have the effect of sealing water simultaneously.

Drawings

FIG. 1 is a schematic diagram of the structure;

fig. 2 is a cross-sectional view of the interior.

In the figure: 1. a cover plate inhaul cable; 2. a water permeable hole; 3. a cover plate; 4. a guide rail; 5. a support ring; 6. opening holes; 7. a bottom edge; 8. a longitudinal beam; 9. and a cross beam.

Detailed Description

The invention will be further described with reference to the drawings and examples.

As can be seen from fig. 1 and fig. 2, the hydraulic gate structure with adjustable lower suction force of the present invention comprises a cover plate stay rope 1, a water permeable hole 2, a cover plate 3, a guide rail 4, a support ring 5, an opening 6, a bottom edge 7, a longitudinal beam 8 and a cross beam 9.

The flat gate is made up of a series of cross members 9 and stringers 8. The flat gate is opened and closed by water, and the suction force under the gate is large when the opening degree is large, so that the capacity of the hoist is easily exceeded; and when the opening degree is small, the door closing force is insufficient, so that the door closing blockage of the gate is easily caused. Optimizing the flat gate, arranging 4 open holes 6 on the bottom cross beam 9 of the flat gate, arranging a series of liftable cover plates 3 above the open holes 6, and suspending the cover plates 3 by cover plate inhaul cables 1. The position of each cross beam 9 of the gate, which is longitudinally opposite to the cover plate 3, is provided with a water permeable hole 2, a cover plate cable 1 connected with the cover plate 2 extends to the upper part of the gate through the water permeable hole 2 and is connected to a ground winch, and the ground winch pulls the cover plate cable 1 to lift the cover plate 3. The cover plate 3 is pulled up to expose the opening 6, the water weight area of the cross beam 9 is reduced by the arrangement of the opening 6, and the problem that the holding force is overlarge when the gate is closed at a large opening is solved; when the cover plate 3 falls down, the cover plate 3 blocks the opening 6, so that the water weight area of the cross beam 9 is increased, and the problem of insufficient door closing force when the gate is opened at a small opening degree is solved.

The supporting ring 5 is installed along the opening 6, and the supporting ring 5 is made of rubber materials and plays a supporting and sealing role. And a cover plate 3 is arranged above the cross beam 9, and the cover plate 3 is hung by the cover plate inhaul cable 1 through the water permeable holes 2, so that the cover plate 3 is hung under the secondary bottom cross beam 9. In order to enable the cover plate 3 to accurately cover the opening 6, smooth guide rails 4 are fixed at four corners of the beam lattice of the cross beam 9, meanwhile, the four corners of the cover plate 3 are provided with openings, the aperture is slightly larger than that of the guide rails 4, the cover plate 3 is restrained by the guide rails 4 when falling down, and the cover plate can accurately fall onto the support ring 5 to cover the opening 6.

Before the flat gate is closed, the winch drives the cover plate inhaul cable 1 to ascend, so that the cover plate 3 ascends to the lower end of the secondary bottom cross beam 9, and the open hole 6 and the supporting ring 5 are exposed. The flat gate starts to move water to close the gate, and the flat gate and the cover plate 3 drop simultaneously, and the cover plate 3 is still positioned at the lower end of the secondary bottom cross beam 9. When the flat gate falls to a small opening degree and cannot further fall, the cover plate 3 is put down by the winch and falls onto the supporting ring 5, the opening 6 is covered, the stressed area of the lowest beam plate is increased, the suction force of the gate is increased, and the gate is continuously closed until the gate is closed.

Claims

1. A hydraulic gate structure capable of adjusting lower suction force is characterized in that: the gate comprises a cover plate inhaul cable (1), a water permeable hole (2), a cover plate (3), a guide rail (4), a supporting ring (5), an opening (6), a bottom edge (7), a longitudinal beam (8) and a cross beam (9), wherein the gate consists of a series of cross beams (9) and longitudinal beams (8), the opening (6) is arranged on the bottommost cross beam (9), a liftable cover plate (3) is arranged above the opening (6), the cover plate (3) is suspended by the cover plate inhaul cable (1), smooth guide rails (4) are arranged at four corners of the cross beam (9) and the cover plate (3) is constrained by the guide rail (4) when falling, and the opening (6) is accurately covered;

each longitudinal beam (8) of the gate extends to the lower part of the bottommost cross beam (9) to form a bottom edge (7);

and each cross beam (9) of the gate is longitudinally provided with a water permeable hole (2) at the position opposite to the cover plate (3), and a cover plate inhaul cable (1) connected with the cover plate (3) extends to the upper part of the gate through the water permeable holes (2) and is connected to a ground winch for driving the cover plate (3) to lift.

2. The adjustable downdraft hydraulic gate structure of claim 1, wherein: and the opening (6) is provided with a supporting ring (5) for supporting the cover plate (3) and sealing the opening (6).

3. The hydraulic gate structure of adjustable downdraft force according to claim 2, wherein: the four corners department of apron (3) are equipped with the through-hole with guide rail (4) relative position, and guide rail (4) run through in corresponding through-hole, can accurately fall on support ring (5) when messenger's apron (3) descend, cover trompil (6).