CN201317930Y - Slider-type flap gate structure - Google Patents

Abstract

A slider-type flap gate structure mainly comprises a panel type gate plate and a rest pier arranged behind the gate plate; the back of the gate plate is fixedly connected with a support leg; a rail is fixed on the support leg; a sliding support seat is fixed on the rest pier and is integrated with a guide groove into a whole body; a sliding block capable of being rotated is installed on the sliding support seat; the orbital plane of the sliding block is attached with the orbital plane of the support leg; the guide groove is provided with a rail groove for rotating the gate plate. The utility model utilizes the sliding friction to substitute the rolling friction, uses the surface contact to substitute the theoretic line contact, so the running stability of the gate is further improved, and the running stability of the slider-type hydraulic automatic flap gate is more obvious compared with the roller connecting bar type gate, the advantage of the slider-type hydraulic automatic flap gate is obvious under the condition of high water depth, large flow rate and high submergence degree in particular. The utility model has the advantages of stable running, large bearing pressure, convenient installation and manufacture, material-saving, influence on the water flow state and the like.

Description

A kind of slide block type flap gate structure

Technical field

The utility model relates to the gate structure of dam.

Background technology

As far back as in the middle of the 19th century, Europe the wooden waterpower of single hinge once occurred from opening the overturning gate, but this type owing to have the excessive velocities of opening the door, return and close water level to cross problem such as low comparatively outstanding, and is effectively overcome in actual moving process always, thereby is not widely used always.

The research and the employing of China's waterpower self-control turnover panel gate dam are progressively to grow up carrying out the process of river channelization construction navigation hinge and hydraulic department development field irrigation cause from early 1960s.Nineteen sixty is adopted transverse axis list hinge (a hinge line) flap gate (the supporting construction pattern of gate panel is a double cantalever type) by Hunan Province's traffic programme surveying and designing institute in the Xi Du navigation multi-purpose project of Hengnan County, Hunan Province steaming water.Transverse axis is placed 1/3rd a high place, and when the upstream flood level was higher than top certain altitude, gate was opened flood discharge automatically around transverse axis under the acting in conjunction based on all external force of water pressure.Solved at that time and to have utilized water pressure to make gate open the problem of flood discharge automatically, do not need personnel operation, do not need other external energy, do not need open/close machinery, and engineering quantity is little, save three materials, reduced investment, and the gate of therefore comparing other types has bigger potential advantages.(seeing figure one) hydraulic department in 1966 is provided with 40 fan 3m * 6m (high * wide) steel single shafts and props up the hinge flap gate on the key dam of door turbine-pump station, the green hill in the Lishui River master stream.And on 20 key dams of Shaoshan Irrigation District, be provided with wooden single shaft and prop up hinge flap gate [(1.7m * 2.7m) and (two kinds of specifications of 2.3m * 4m)].This type of flap gate has also successively been adopted in the power station, area just outside a city gate, Cili in the Lishui River master stream, the Yang Tang power station in Mi water master stream.

But also there are some technical problems in this class gate in actual moving process: when gate is opened, just jump to full-gear from the complete shut-down state, impact force is very big quickly, damages gate easily; Gate jumps to standard-sized sheet from complete shut-down suddenly, cause easily that upper pond level falls suddenly suddenly, letdown flow increases sharply suddenly, formation is similar to the current phenomenon of dam break, not only unfavorable to the upstream and downstream navigation, to generating, irrigate, flood control is unfavorable, and stable all very unfavorable to the energy dissipating erosion control in gate dam downstream and underwater bed, and gate can't go back to the pass automatically, can only go back to the pass by manpower, in current, carry out manpower and go back to the pass and then operate very dangerous.Owing to can not go back to the pass automatically, then cause easily and can not in time keep upper pond level, make and can utilize water resource to run off in vain in a large number.

Be to solve gate can not return the problem of closing automatically under hydraulic action, China engineers and technicians have taked to add an amount of counterweight in the bottom of gate, make gate be lower than normal pool level at upper pond level and realize back closing more for a long time under the acting in conjunction of door weight and waterpower.But because time pass water level is too low, so the excessive problem of water resource loss is not solved fully.And its time pass is to get back to complete shut-down rapidly from standard-sized sheet suddenly, and impact force is very big, damages gate and dam facing easily.Because added counterweight in the bottom of gate, it is too high to cause opening a water level again, and flood discharge is untimely, and one opens the similar dam break current phenomenon that is caused suddenly, also more fierce than the gate that does not add counterweight, and gate is bigger to the impact force of buttress.

Pat the problem of buttress and dam facing for solving gate, China engineers and technicians had once been installed oleo-gear additional on gate, but resultant effect is unsatisfactory.

In development afterwards, on the basis of single hinge formula turnover panel gate dam, carried out technological innovation, certain distance increases hinge position (going up the hinge position) again above former hinge position, and it is designed to have the flap gate of two hinge lines, and we are referred to as two hinge flap gates usually.

Though but this pair of hinge flap gate preferably resolves the difficult problem that gate goes back to the pass automatically, but exist back pass moment excessive, cause easily that gate vibrates, the phenomenon of " beating " in running, not only make water level, flow very unstable, and also can damage gate and dam facing sometimes.In order to address this problem, start with from strengthening the damping of gate rotation process, there is the designer on two hinge gates, to install oleo-gear additional, thereby reduced the impact force of gate in running greatly.

Almost simultaneously, in order to overcome single more operating shortcoming problems of hinge flap gate, the user who also has changes twin shaft two hinged structure gate into, and has set up cushion cylinder.But still there are some realistic problems in actual applications in this two hinge flap gates that installed oleo-gear additional: the water level of closing the door is too low, and water resource runs off excessive; The oleo-gear structure is complicated, and desired machining accuracy is higher, is difficult for making, and keeps in repair also pretty troublesome; The oleo-gear price is expensive, has improved the direct cost of gate greatly; Sometimes same gate about the oil pressure damping of two oleo-gears asynchronous, just cause flow, water level, aperture inharmonious easily, make gate not working in running, occur or vibrate, phenomenon such as " beating ".When especially gate was in submerge discharging flow, it was serious " beating " phenomenon to occur.

At the problems referred to above, China engineers and technicians have done further improvement, and the distance by adjusting supporting hinge and shutter mass centre position takes to add measures such as long leg with the close the door method of water level of raising, makes the water level of closing the door bring up to normal pool level.Water level improves owing to close the door, and during closing gate, water pressure is also increased greatly in front of the door, can prevent that gate from impacting dam facing, thereby cancel oleo-gear.But still have some technical problems in the actual moving process, for example after being a hinged bearing by two hinged bearing state transformations, the gate inclination angle can take place to suddenly change significantly, causes water level, flow to fluctuate widely.This pair of hinge gate is in the popularization process, and vibration, " beating " phenomenon have also appearred in some engineering.

As shown in Figure 1, in I technician's of company continuous exploration and practice process, design the good idler-wheel connecting-rod type flap gate structure of present result of use.Its design main points are to realize that with hydraulic connecting rod panel is connected with the stable of buttress by the roller of circle.This idler-wheel connecting-rod type flap gate has unlimited bar hinge in running, " hinge position " changes is continuous, gradual change, and any position that gate is in operation all is to be two fulcrum stresses on each buttress.Thereby strengthened the stability of gate in running.Preventing that gate beating, guaranteed water level and flow from aspects such as fluctuation not taking place qualitative leap has been arranged.

Fig. 2 is to its further improvement on the basis of Fig. 1.Compared to Figure 1 present embodiment has been done following improvement:

1. flap gate is modified into the pattern of an angle of pre-dumping downstream, through repeatedly finding after the hydraulic model test, proves the little aperture vibration phenomenon that it can effectively prevent flap gate, and make and initially open a water level and be minimized, the water level of closing the door is improved;

2. student's weir crest is provided with a ramp type and falls, and makes the student's weir type become the trapezoidal cross-section practical weir, has increased discharge coefficient, makes the upstream flood level be lower than the flap gate of other form of employing, has reduced submerge loss;

3. repeatedly revising and debug aspect length of connecting rod and hinge a position, the roller diameter, move more accurately and reliably.And the opening a water level and can require to be designed to be higher than arbitrary value within the ordinary water level 5-30cm according to the owner of flap gate, the design achievement can be controlled in the 10cm with the actual water level difference of using;

4. set up Protection Pier and establish air vent on the abutment wall of two sides before gate, Protection Pier can prevent effectively that the upstream from coming thing bump gate and floating thing to get lodged in gate and propping up under the hinge and damage, and steam vent can be eliminated the formation of student's negative pressure and cavity.

Yet, along with waterpower self-control turnover panel gate dam applying under various waterpower, hydrologic condition, particularly under the situation of stream, big flow, the high depth of water, height degree of flooding use, and also more and more higher to the requirement of the operation stability of hydraulic automatically-controlled shutter gate.So the engineers and technicians of our company improved the stability of gate operation from strengthening originally with regard to the frictional damping that is present in the gate operation process, and the stability that will further improve the gate operation just need be changed into rolling friction the viewpoint of sliding friction.Afterwards, the engineers and technicians of our company have further designed the slide block type hydraulic automatically-controlled shutter gate on the basis of the superiority of sending out field idler-wheel connecting-rod type hydraulic automatically-controlled shutter gate, substitute rolling friction with sliding friction, substitute theoretic line contact with the face contact, the operation stability of gate has obtained further raising like this.

The utility model content

The purpose of this utility model provides a kind of slide block type flap gate structure, substitutes rolling friction with sliding friction, substitutes theoretic line contact with the face contact, and the operation stability of gate is improved.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of slide block type flap gate structure, mainly comprise the panel type door-plate and be positioned at door-plate buttress behind, fixedly connected with supporting leg in the back of door-plate, track is fixed on the supporting leg, be fixed with the sliding bearing seat on buttress, sliding bearing seat and guide groove are integrated, and the slide block that can reverse is installed on the sliding bearing seat, the orbital plane of slide block and the orbital plane of leg are fitted, and described guide groove is provided with the rail groove that door-plate rotates.

Advantage of the present utility model is:

The structural shape aspect: guide groove and sliding bearing seat are integrated, and be simple in structure, compact;

Gate operation stability aspect: slide block frictional force is big, and operation stability is high and safe and reliable, strengthens greatly on the performance of opposing vibration and " beating " than present other flap gate;

The bearing pressure aspect: the pressure that sliding bearing can bear is bigger, is suitable for the supporting of the bigger flap gate of dash area.Show that thus gate can develop to adding the high direction with gate-width in gate;

Because supporting, running structure are concentrated, small and hidden is difficult for blocking and hangs branch or other foreign material, makes near will the getting well of flap gate of other more present pattern of the flow-shape buttress.

Description of drawings

With embodiment the utility model is described in further detail with reference to the accompanying drawings below.

Fig. 1 is the structural representation of the idler-wheel connecting-rod type flap gate of prior art panel vertical;

Fig. 2 is the structural representation of the idler-wheel connecting-rod type flap gate of prior art panel inclination;

Fig. 3 is example structure figure of the present utility model.

Among the figure:

1, door-plate; 2, buttress; 3, supporting leg; 4, track; 5, sliding bearing seat; 6, slide block; 7, Protection Pier; 8, guide groove.

The specific embodiment

As shown in Figure 3, the described a kind of slide block type flap gate structure of present embodiment, mainly comprise panel type door-plate 1 and be positioned at door-plate 1 buttress 2 behind, fixedly connected with supporting leg 3 in the back of door-plate 1, track 4 is fixed on the supporting leg 3, is fixed with sliding bearing seat 5 on buttress 2, sliding bearing seat 5 is integrated with guide groove 8, the slide block 6 that can reverse is installed on sliding bearing seat 5, and the orbital plane of the orbital plane of slide block 6 and leg 3 is fitted, and described guide groove 8 is provided with the rail groove that door-plate 1 rotates.Described door-plate 1 is the installation that recedes.Be provided with Protection Pier 7 in door-plate 1 front.

The slide block type hydraulic automatically-controlled shutter gate substitutes rolling friction with sliding friction, substitutes theoretic line contact with the face contact, and the operation stability of gate has obtained further raising like this.Test shows that the operation stability of slide block type hydraulic automatically-controlled shutter gate obviously is better than idler-wheel connecting-rod type.

Under the situation of stream at the high depth of water, big flow, height degree of flooding, more can demonstrate the superiority of slide block type hydraulic automatically-controlled shutter gate.This door type is made, is saved material and all many-sides such as influence of flow-shape are all had tangible advantage in operation stability, bearing pressure, installation:

The structural shape aspect: guide groove and sliding bearing seat are integrated, and be simple in structure, compact;

Gate operation stability aspect: slide block frictional force is big, and operation stability is high and safe and reliable, strengthens greatly on the performance of opposing vibration and " beating " than present other flap gate;

The bearing pressure aspect: the pressure that sliding bearing can bear is bigger, is suitable for the supporting of the bigger flap gate of dash area.Show that thus gate can develop to adding the high direction with gate-width in gate;

Because supporting, running structure are concentrated, small and hidden is difficult for blocking and hangs branch or other foreign material, makes near will the getting well of flap gate of other more present pattern of the flow-shape buttress.

The works of slide block type flap gate is made up of track 4, slide block 6, supporting base 5 and guide groove 8 etc.Slide block 6 adopts high-abrasive material, and other three adopts steel work.Track 4 is fixed on the supporting leg 3, and guide groove 8 is fixed on the supporting base 5, and slide block type supporting hinge is installed in the guide groove below of bearing 5 with axle.Orbital position, slide block type supporting hinge size, shaft core position, guide groove position, guide groove curvilinear path all should be determined by calculating with hydraulic model test according to the waterpower hydrologic condition.The curvilinear path of guide groove 8 add man-hour must be accurately smooth-going, simultaneously must strict control crudy.Works when mounted must strict control accuracy.

Claims (3)

1, a kind of slide block type flap gate structure, mainly comprise the panel type door-plate and be positioned at door-plate buttress behind, fixedly connected with supporting leg in the back of door-plate, track is fixed on the supporting leg, it is characterized in that, is fixed with the sliding bearing seat on buttress, sliding bearing seat and guide groove are integrated, the slide block that can reverse is installed on the sliding bearing seat, and the orbital plane of slide block and the orbital plane of leg are fitted, and described guide groove is provided with the rail groove that door-plate rotates.

2, a kind of slide block type flap gate structure according to claim 1 is characterized in that, described door-plate is the installation that recedes.

3, a kind of slide block type flap gate structure according to claim 2 is characterized in that, is provided with Protection Pier in the door-plate front.

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