CN105788427B - A kind of lifting device for hydraulic analogy - Google Patents
A kind of lifting device for hydraulic analogy Download PDFInfo
- Publication number
- CN105788427B CN105788427B CN201610258487.2A CN201610258487A CN105788427B CN 105788427 B CN105788427 B CN 105788427B CN 201610258487 A CN201610258487 A CN 201610258487A CN 105788427 B CN105788427 B CN 105788427B
- Authority
- CN
- China
- Prior art keywords
- gate
- block
- pillar
- elastic
- lifting device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Barrages (AREA)
Abstract
The invention discloses a kind of lifting devices for hydraulic analogy, including：Pillar is used to support the lifting device；Lifting device, for passing through elastic pulling force fast lifting gate；Switching device stops at the first stop position, and discharge the lifting device to make its lift gate for controlling the lifting device；Wherein, first stop position corresponds to the elastic tension state of lifting device and the closed state of gate.The present invention provides the power of rising by elastic device and pulley for gate so that the initial acceleration that gate is promoted is larger, and later stage acceleration is gradually reduced, and is conducive to shorten the safety taken and ensure operation that gate is promoted.
Description
Technical field
The present invention relates to empirical theory technical field more particularly to a kind of promotion dresses for hydraulics dam break wave simulation
It sets.
Background technology
China is to possess the most country of reservoir dam quantity now.Reservoir can play flood control, irrigation, confession after building up
The effects that water, power generation, while also bringing certain potential risk.For example, dam break once occurs for reservoir dam, it is vast to downstream
Disaster is often destructive caused by area.The disaster of dam break is mainly caused by the impact of dam bursting flood and the effect of flooding.Especially
When it is that the dykes and dams of concrete structure burst, it is instantaneously to burst that can be approximately considered, and the dam bursting flood formed is more typical
With it is strong.Due to the sudden and complexity of Dam Break Problems, at present to the also prematurity of the understanding of dam break, dam break physical model is carried out
Experiment can promote the understanding to Dam Break Problems, the grasp to dam bursting flood Evolution Regularity, be provided for downstream urban flood defence early warning
Scientific basis.
In physical model experiment, transient reliability is usually simulated with the mode for detaching gate suddenly.Dam break gate
Promoting the time (speed) should be paid special attention to, because the promotion time of dam break gate directly affects experimental simulation moment and bursts
The feasibility of dam condition.There is a hydraulic research to point out, as upstream depth of water h0When known, if gate opening time t meets
Following relationship, so that it may which, to think that the propagation of velocity of wave is influenced very little by gate opening process, dam break can be regarded as moment：
Currently, the hoisting way for commonly using gate in hydraulic engineering mainly has men hoisting, mechanical lifting and electric power promotion etc..
But the promotion speed of most of gates cannot meet above-mentioned relation formula, thus it is necessary to carry out special set to experiment dam break gate
Meter ensures the validity of dam-break bores analog result to meet the simulation of experiment transient reliability condition.
Invention content
The object of the present invention is to provide a kind of lifting device for hydraulics dam break wave simulation, the present invention is filled by elasticity
It sets and provides the power that gate rises with pulley so that the initial acceleration that gate is promoted is larger, and later stage acceleration is gradually reduced, and is had
It is taken conducive to what shortening gate was promoted.The present invention not only eliminates the security risk brought using heavy lift gate, but also
So that the lifting device of the present invention is upper more flexible in arrangement；In practical application, as needed further to shorten gate opening consumption
When, realization can be facilitated by increasing elastic device quantity or replacing the elastic device of coefficient of elasticity bigger.The present invention makes dam-break bores
Simulation has more reliability and operability.
According to an aspect of the present invention, a kind of lifting device for hydraulics dam break wave simulation, including：Pillar is used
In the support lifting device；Lifting device, for passing through elastic pulling force fast lifting gate；Switching device, for controlling
It states lifting device and stops at the first stop position, and discharge the lifting device to make its lift gate；Wherein, first stop position
Corresponding to the elastic tension state of lifting device and the closed state of gate.
Wherein, the lifting device includes：Elastic device and the first block；Elastic device, one end is fixing end, another
End is movable end；First block, one end of which is fixed on the elastic device movable end, the other end connects gate by drag-line.
Wherein, the switching device includes：Horizon bar, leverage and the second block；Horizon bar, horizontal through the branch
Column connects the leverage, described in one end rigid connection of the pillar other side in one end of the pillar side
Second block；Leverage is moved horizontally for controlling the horizon bar；Second block, for stopping that first block makes
It stops at the first stop position.
Wherein, the leverage includes：Fang Xin and stock；Fang Xin is connect with the horizon bar, and even by activity
Fitting is fixed on pillar side wall, can be rotated around the active connection；Stock, for controlling the Fang Xin rotations, one
End is rigidly connected with the Fang Xin, and the other end is handheld terminal.
Wherein, when rotating the stock, the Fang Xin rotates in same direction under the pulling function of the stock, pulls
Horizon bar moves horizontally, and the second block is driven to move horizontally so that second block is detached from first block.
Wherein, when second block and first block are detached from, elastic pulling force of the elastic device at itself
Contractile motion is done under effect, to pull first block to drop to the second stop position from first stop position；Wherein, described
Second stop position corresponds to the elastic shrinkage state of spring assembly and the open state of gate.
Wherein, further include：Secondary spring is set on the horizon bar, and one end is fixedly connected with pillar, the other end
It is fixedly connected with the Fang Xin, stability when for ensureing that switching device is closed.
Wherein, further include：Cantilever beams are fixed at the pillar top, are used to support multiple fixed pulleys.
Wherein, the multiple fixed pulley includes at least one main fixed pulley and n sub- fixed pulley, n >=1；The drag-line one
End connects first block across the main fixed pulley, and the other end is divided into n stock section drag-lines after passing through n sub- fixed pulley,
The n stocks section drag-line connects the gate.
Wherein, the multiple fixed pulley includes at least one main fixed pulley and n sub- fixed pulley, n >=1；The drag-line one
End connects first block across the main fixed pulley, and the other end is divided into the drawing of n stock sections after bypassing the n sub- fixed pulley
Rope, the n stocks section drag-line are connect with the gate.
Wherein, the proportional region of height of the cantilever beams apart from ground and the gate height is 2.5：1-3:1.
Wherein, further include：Multiple draw rings are arranged on the gate, and the drag-line connects institute by the multiple draw ring
State gate.
Wherein, further include：Card slot, vertical setting are equipped with sliding rail, the lock in gate both sides, each card slot
Door can be slided up and down vertically by the sliding rail.
Wherein, K, H, z, m, f, L meet following formula：
Wherein, z is the function z=z (t) of t, then
Wherein, K indicates that the coefficient of elasticity of spring assembly, H indicate the hoisting depth of elastic device, and it is high that z indicates that gate is promoted
Degree, m indicate that gate quality, f indicate that initial frictional, L indicate card slot height.
Wherein, if gate promotes time t and meets following formula, then it represents that the gate opening speed can be used for simulating dam-break bores mould
It is quasi-：
Wherein, h0It indicates the experiment depth of water, 0.1m, gravity acceleration g is taken to take 9.8m/s2, then promoting time t need to be less than
0.126s。
Preferably, work as K=200N/m, H=0.5m, L=0.4m, m=1kg, f=2N；K=100N/m, H=0.5m, L=
0.4m, m=0.5kg, f=2N；K=100N/m, H=0.5m, L=0.2m, m=1kg, f=2N；K=100N/m, H=1m, L
=0.4m, m=1kg, f=2N；When each parameter takes values above, it can ensure that gate has fully opened in t=0.126s, z
=L, i.e. gate promote the time less than 0.126s.
Wherein, K=200N/m, H=0.5m, L=0.4m are chosen, m=1kg, f=2N meet hydraulics dam break requirement of experiment
Parameter value ranging from：K ∈ [200,400], H ∈ [0.5,1], L ∈ (0,0.4], m ∈ (0,1], f ∈ (0,2].
The present invention provides the power of rising by elastic device and pulley for gate so that the initial acceleration that gate is promoted
Larger, later stage acceleration is gradually reduced, and is conducive to shorten taking for gate promotion.The present invention is not only eliminated using heavy lift
The security risk that gate is brought, so that the lifting device of the present invention is upper more flexible in arrangement；In practical application, being
Shorten gate opening to take, can be by increasing elastic device quantity or replacing the elastic device of coefficient of elasticity bigger, the present invention makes
Dam break wave simulation has more reliability and operability.
Description of the drawings
Fig. 1 is the structural schematic diagram of existing gravity type lift gate；
Fig. 2 is the curve graph of the gate hoisting depth and promotion speed of existing gravity type lift gate；
Fig. 3 is the structural schematic diagram of the experiment original state of the lifting device for dam break wave simulation of the present invention；
Fig. 4 is the structural schematic diagram of the experiment completion status of the lifting device for dam break wave simulation of the present invention；
Fig. 5 is the curve graph of the gate hoisting depth and promotion speed of the present invention；
Reference numeral：
10- pillars, 20- lifting devices, 21- elastic devices, the first blocks of 22-, 30- switching devices, 31- horizon bars,
311- secondary springs, 32- leverages, the side's 321- core, 322- stocks, the second blocks of 33-, 40- cantilever beams, 41- fixed pulleys,
50- drag-lines, 60- gates, 61- draw rings, 70- card slots.
Specific implementation mode
In order to make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment and join
According to attached drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair
Bright range.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid this is unnecessarily obscured
The concept of invention.
Fig. 1 is the structural schematic diagram of existing gravity type lift gate.
Existing dam break gate is mainly gravity type lift gate.As shown in Figure 1, fixed pulley 2 is set above gate 1,
Weight 4 is connected with gate 1 by the steel wire 3 of the fixed pulley 2.Before the unlatching of gate 1, weight 4 is placed in the upper of 1 height of gate
It sets；In the moment that gate 1 is opened, weight 4 loses constraint and falls, and is lifted gate 1 rapidly by steel wire 3.It is spread below weight 4
If buffer units such as Sand Buckets 5, to realize quickly lifting for gate, the consumption of gate opening can be shortened by increasing weight weight
When.
It is existing by the way of heavy lift gate, the most important security risk brought the disadvantage is that weight drops.With
The unlatching of gate 1, gate 1 and the contact area of card slot 6 become smaller, and frictional force also reduces, and gravity is constant, thus weight-drop
Acceleration can be increasing in the process, and speed is also increasing, causes last momentum very big, is easy to cause ground and sink
Vibrations.And gate promoted when, initial acceleration is relatively small, and later stage acceleration constantly becomes larger, and is unfavorable for shortening in this way
Gate leaves taking for the water surface completely.And if think further to shorten taking for gate opening, weight weight, in this way meeting need to be increased
Bring the security risk of bigger.The mode of existing gravity type lift gate is limited by the size of acceleration of gravity, actually very
It is difficult further to shorten taking for gate opening.
Assuming that 1 mass of gate is m, 6 height of card slot is L, and 1 hoisting depth of gate changes over time as z (t), 4 mass of weight
For M, initial maximum frictional force is f, acceleration of gravity g, then the gravity G1=mg of gate 1, the gravity G2=Mg of weight 4.Ginseng
See Fig. 1, equation can be listed below according to Newton's second law：
It can be obtained after arrangement：
Wherein,
The movement of falling object is first done discharged due to weight 4 again after, is fallen under after steel wire stretches, weight 4 and gate 1 will be with
Same rate motion can list the equation of momentum, the primary condition solved as above formula.If rope length is l, then have
For laboratory dam break wave simulation, the characteristic value of each parameter can be taken as m=1kg, M=10kg, L=0.4m, l respectively
=0.5m, f=2N, gate hoisting depth and promotion rate curve are shown in Fig. 2.
Fig. 2 is the curve graph of the gate hoisting depth and promotion speed of existing gravity type lift gate, and Z indicates that gate carries
Rise, T indicate that gate promotes the time, and V indicates to promote speed, it can be seen from the figure that gate promotes speed V T bases at any time
This linear variation increases, and gate height Z variations are getting faster, the stopping being unfavorable in this way after gate opening, security risk
It is really larger.
Gravity type lift gate is changed to elastic device lift gate by the lifting device for dam break wave simulation of the present invention
Opening ways, realize by gate promoted to the time spent in fully open state (range of lift 0.4m) be 0.10s, so as to
Think that the dam break condition of simulation is instantaneous.And while ensureing that gate promotes speed, the safety, steady of dam break gate is realized
Qualitative and controllability.
Fig. 3 is the structural schematic diagram of the experiment original state of the lifting device for dam break wave simulation of the present invention.Fig. 4 is
The structural schematic diagram of the experiment completion status of the lifting device for dam break wave simulation of the present invention.
As shown in Figure 3,4, the lifting device for dam break wave simulation of the invention, including：Pillar 10,20 and of lifting device
Switching device 30.
Specifically, pillar 10, is used to support the lifting device 20.
Here, the pillar 10 is fixed on ground or wallboard.
Lifting device 20, for passing through elastic pulling force fast lifting gate 60.
Here, the set-up mode of lifting device 20 is not construed as limiting, and can set the lifting device 20 vertically along pillar 10
It sets (set-up mode of lifting device 20 in such as Fig. 3,4) or is obliquely installed along pillar 10 along described, as long as enabling to be promoted
Device 20 is in tensioning state and can be by natural resiliency pulling force fast lifting gate 60.
Switching device 30 stops at the first stop position for controlling the lifting device 20, and discharges the lifting device
20 make its lift gate 60；Wherein, first stop position corresponds to the elastic tension state and gate 60 of lifting device 20
Closed state.
Further, the lifting device 20 includes：Elastic device 21 and the first block 22.
Elastic device 21, one end are fixing end, and the other end is movable end.Specifically, as shown in Figure 3,4, elastic device
21 one end is fixed at the bottom end of pillar 10, and the other end is movable end.The elastic device 21 can be spring or other
Elastic stretching device.Because piano wire has higher strength degree and elastic limit, it is preferred that the material of elastic device 21 can be
Piano wire.
First block 22, one end of which is fixed on 21 movable end of the elastic device, the other end connects gate by drag-line 50
60.Specifically, as shown in Figure 3,4,22 one end of the first block is fixed on 21 movable end of elastic device, is stretched as elastic device 21 is done
Contracting activity, the other end connect gate 60 by drag-line 50.
In the present invention, first block 22 includes but not limited to iron plate.
Further, the switching device 30 includes：Horizon bar 31, leverage 32 and the second block 33.
Horizon bar 31 connects the leverage horizontal through the pillar 10 in one end of 10 side of the pillar
32, connect second block 33 in one end of 10 other side of the pillar.Specifically, 10 side wall of the pillar is equipped with smooth
Two through-holes, horizon bar 31 is horizontal through the pillar 10, and the both ends of horizon bar 31 pass through described two through-holes, water respectively
Flat bar 31 connects the leverage 32 in one end of 10 side of the pillar, horizon bar 31 in 10 other side of the pillar one
End connects second block 33.
Leverage 32 is moved horizontally for controlling the horizon bar 31.
Further, the leverage 32 includes：Square core 321 and stock 322.
Square core 321 is connect with the horizon bar 31, and is fixed on 10 side wall of pillar by active connection, can
It is rotated around the active connection.
Stock 322 is rotated for controlling side's core 321, and one end is rigidly connected with side's core 321, and the other end is
Handheld terminal.
Specifically, as shown in Figure 3,4, it is described under the pulling function of the stock 322 when rotating the stock 322
Square core 321 rotates in same direction, and horizon bar 31 is pulled to move horizontally, and drives the second block 33 to move horizontally so that described second
Block 33 is detached from first block 22.
When second block 33 and first block 22 are detached from, elastic pulling force of the elastic device 21 at itself
Contractile motion is done under effect, to pull first block 22 to drop to the second stop position from first stop position；Wherein, institute
The second stop position is stated corresponding to the elastic shrinkage state of spring assembly 21 and the open state of gate 60.
Here, as long as leverage 32 enables to 31 occurred level of horizon bar to move so that the second block 33 with
First block 22 is detached from, however it is not limited to above-described embodiment that the present invention provides.
Second block 33, for stopping that first block 22 makes it stop at the first stop position, as previously mentioned, described
One stop position corresponds to the elastic tension state of lifting device 20 and the closed state of gate 60.
Specifically, as shown in figure 3, when gate 60 is closed, second block 33 is horizontally set at this time
First block 22 can be made to be still in the height of the first stop position, the one end engaged with first block 22 is hanging
Setting, the other end are rigidly connected with the horizon bar 41 horizontal through the pillar 10.Preferably, the second block 33 has larger
Rigidity, and it is smooth with 22 contact surface of the first block.
Fig. 3 is experiment original state, i.e. gate promotes preceding original state.As shown in figure 3, working as second block 33 and institute
When stating the engaging of the first block 22, elastic device 21 is in elastic tension state at this time, and gate 60 is closed.Fig. 3 is hit by a bullet
Property the right side of device 21 arrow indicate that the elastic shrinkage direction of pull of elastic device 21, the arrow of 60 top of gate indicate gate 60
Opening direction, i.e., when second block 33 engages with first block 22, the elastic device 21 is in external force
Effect is lower to complete elastic stretching movement so that first block 22 is located at the first stop position, as previously mentioned, first stop position
Corresponding to 23 elastic stretching state of spring assembly and the closed state of gate 60.
Fig. 4 is that gate promotes completion status.As shown in figure 4, when second block 33 and first block 22 are detached from
When, 21 elastic shrinkage of elastic device makes gate 60 open and arrives the state.I.e. when second block 33 and first block 22
When separation, the elastic device 21 does elastic shrinkage movement under the elastic pulling force effect of itself, pulls first block 22
Drop to the second stop position from first stop position, is received as previously mentioned, second stop position corresponds to 23 elasticity of spring assembly
The open state of contracting state and gate 60.
As shown in Figure 3,4, in an optional embodiment, the invention also includes：Secondary spring 311 is set in described
On horizon bar 31, one end (since horizon bar 31 is horizontal through pillar 10, therefore has at 31 PATENT left side via of horizon bar on pillar 10
Two through-holes, 31 right side through-hole of 31 PATENT left side via of horizon bar and horizon bar) it is fixedly connected with pillar 10, the other end and the Fang Xin
321 are fixedly connected, stability when for ensureing that switching device 30 is closed, that is, ensure the first block 22 and second gear
Stability when block 33 engages.Specifically, secondary spring 311 is in moderate compression state under normal circumstances, to second gear
Block 33 applies the thrust towards the first block 22, it is ensured that in prosthetic external force situation, the second block 33 will not be sent out because of small sample perturbations
The raw movement for being detached from the first block 22.Secondary spring 311 is used as auxiliary device, is sleeved on horizon bar 41, connection side's core 321 and branch
Column 10 plays the role of fixation side's core 321 and stock 322 and is not easy to shake when without operation, i.e., risen to switching device 30
To stabilization.
As shown in Figure 3,4, further, in one embodiment, the invention also includes：Cantilever beams 40, are fixed at
10 top of the pillar, is used to support multiple fixed pulleys 41.Specifically, the top horizontal of the pillar 10 is provided with cantilever beams
40, specifically, pillar 10 and cantilever beams 40 are used to provide stable stress to gate 60 and support, with drag-line 50, elasticity
Device 21 completes the conduction of opening force jointly, plays the role of stablizing entire lifting device.Pillar 10 and cantilever beams 40, resistance to compression
Shear behavior is good and rigidity is not susceptible to greatly apparent deformation.
Here, pillar 10 and cantilever beams 40 can be that an entirety or pillar 10 and cantilever beams 40 pass through bolt
Or other fixed forms are connected as one.Preferably, the material of the pillar 10 and cantilever beams 40 is steel, springform
Amount is more than 170GPa, and the rigidity of structure is big, and deformation is small negligible during whole operation.
In the present invention, the arm of cantilever beams 40 extends to 60 top of gate, it is therefore an objective to be convenient for 50 cloth of fixed pulley 41 and drag-line
If.In addition, the height setting of pillar 10 is wanted be that gate 60 provides enough rooms for promotion.In a preferred embodiment,
Height of the cantilever beams 40 apart from ground is 2.5 with 60 oneself height ratio of gate:1-3:1.For example, when gate is 0.3m,
The height of cantilever beams 40 can be 0.8m.
Further, in one embodiment, the multiple fixed pulley 41 includes that at least one main fixed pulley and n son are fixed sliding
Wheel, n >=1；50 one end of the drag-line passes through the main fixed pulley to connect first block 22, and the other end passes through n son fixed sliding
It is divided into n stock section drag-lines after wheel, the n stocks section drag-line connects the gate 60.Specifically, the multiple fixed pulley 41 is used
In carrying drag-line 50 and the direction of pull of change drag-line 50.Drag-line 50 can change drag-line 50 after the multiple fixed pulley 41
Direction of pull can ignore shadow of the fixed pulley 41 to total pulling force size since the frictional resistance of fixed pulley 41 is smaller
It rings, that is, thinks pulling force by only changing direction of pull after fixed pulley 41, size is constant.
Further, the gate 60 is equipped with multiple draw rings 61, and as shown in Figure 3,4, the multiple draw ring 61 is arranged in institute
Show above gate, the n stocks section drag-line connects the gate 60 by the multiple draw ring 61.For example, can be on gate 60
Two draw rings 61 are set, and drag-line 50 is connect by described two draw rings 61 with gate 60.
In an optional embodiment, the invention also includes：Multiple card slots 70, it is vertical to be arranged in 60 both sides of gate, each
The card slot 70 is equipped with sliding rail, and the gate 60 can be slided up and down vertically by the sliding rail.Tool
For body, as shown in Figure 3,4, the both sides of gate 60 set that there are two card slots 70, and when gate 60 is closed, card slot 70 can be played and be prevented
The effect of infiltration.
Technical scheme of the present invention is illustrated below：
Elastic device 21 is used to provide promotion power for gate 60, and the movable end of elastic device 21 connects with one end of drag-line 50
It connecing, the fixing end of elastic device 21 is connect with the bottom of pillar 10, and the movable end of elastic device 21 is connected with the first block 22,
Stock 43 is rotated clockwise by the leverage 40, first block 22 is controlled and is detached from second block 33, into
And regulating gate 60 is opened, and in the process, the elastic potential energy of elastic device 21 is converted the promotion pulling force for gate 60.
Leverage 40 is for controlling whether starting gate 60, when leverage 40 is closed (as shown in Figure 3), second gear
First block 22 is blocked in the first stop position by block 33, at this time two block (the first block 22 and the second block 33) engagings, this
When elastic device 21 keep maximum tension state, drag-line 50 do not stress.When leverage 40 opens (as shown in Figure 4), pass through
So that two blocks (the first block 22 and the second block 33) are detached from, drag-line 50 is filled shifting lever device 40 clockwise by elasticity
Pulling force is transmitted to gate 60 by the pulling force effect for setting 21, to realize the promotion of gate 60.
The action principle of leverage 40 is as follows：
When leverage 40 is closed, the first block 22 being connected at this time with 21 movable end of elastic device is stuck in the second block
33 tops, since the second block 33 is connect with leverage 40 in the horizontal direction, the second block 33 can be made in leverage 40
It is detached with lower level, to be disengaged with the first block 22, elastic device 21 is made to start to shrink at acting.Wherein, due to level
Bar 41 is able to ensure that the direction of motion of the second block 33 is horizontal (vertical with 21 axis of elastic device horizontal through the pillar 10
Directly), secondary spring 311 can ensure that, in prosthetic external force situation, the second block 33 will not detach first gear because of small sample perturbations
Block 22.
Realize the operation that leverage 40 is opened, gate 60 is promoted, the i.e. tool that the second block 33 and the first block 22 are detached from
Gymnastics conduct：Laboratory technician rotates clockwise about 30 ° of stock 43, and (Fig. 3 is state when stock 43 is not stirred, and Fig. 4 is that stock 43 is dialled
State after dynamic), drive side's core 42 rotates 30 °, because one end of square core 42 is connected with horizon bar 41, in this way, accordingly so that water
The horizontal displacement of 2cm or so occurs for flat bar 41, to drive the second block 33 to be detached from the first block 22.
As shown in figure 3, the realization process opened below to gate moment of the present invention is introduced.
The realization of the upward pulling force of gate：Multiple draw rings 61 are installed, gate 60 is connected by the two draw rings 61 on gate 60
Drag-line 50 is connect, drag-line 50 realizes that deflecting, the other end and the elastic device 21 of drag-line 50 are lived by the fixed pulley 41 of 60 top of gate
Moved end connects, and the fixing end of elastic device 21 is fixed on 10 bottom end of column, and the pulling force of such elastic device 21 is passed by drag-line 50
It is delivered on gate 60, is converted to the pulling force of lift gate.
The realization of instantaneous starting gate：When gate 60 is closed, elastic device 21 is in maximum tension state, switching device 50
It is closed, i.e., the first block 22 engages with the second block 33, and drag-line 50 does not stress at this time；When the moment of shifting lever device 40,
One block 22 and the second block 33 are detached from, and elastic device 21 is done work with maximum pull, 50 stress of drag-line, the elasticity of elastic device 21
Potential energy is converted into the kinetic energy of gate 60 by drag-line 50 and fixed pulley 41, so that gate 60 reaches opening state in a short time
State realizes instantaneous open.
Gate promotes the guarantee of speed：Apply on the sliding rail that gate 60 and card slot contact with each other lubricant layer (such as
Waxing), to reduce frictional resistance f when gate 60 is promoted.Elastic device 21 can ensure to be much larger than in 60 improvement stage of gate
The pulling force of the sum of gate gravity and frictional resistance f.
The guarantee of safety：For the application relative to heavy lift gate, security risk is smaller.21 pulling force of elastic device is with lock
The increase of 60 hoisting depths of door and reduce, ensure the not extra momentum of elastic device 21.The stressed members such as drag-line 50, draw ring 61
All there is larger safety margin, the design of stock 32 to also ensure the safe distance of experimenter and elastic device 21.
Wherein, K, H, z, m, f, L meet following formula：
Wherein, z is the function z=z (t) of t, then
Wherein, t indicates that gate promotes the time, and K indicates that the coefficient of elasticity of spring assembly, H indicate that the promotion of elastic device is high
Degree, z indicate that gate hoisting depth, m indicate that gate quality, f indicate that initial frictional, L indicate card slot height.
Wherein, if gate promotes time t and meets following formula, then it represents that the gate opening speed can be used for simulating dam-break bores mould
It is quasi-：
Wherein, h0It indicates the experiment depth of water, 0.1m, gravity acceleration g is taken to take 9.8m/s2, then promoting time t need to be less than
0.126s。
Wherein, work as K=200N/m, H=0.5m, L=0.4m, m=1kg, f=2N；
K=100N/m, H=0.5m, L=0.4m, m=0.5kg, f=2N；
K=100N/m, H=0.5m, L=0.2m, m=1kg, f=2N；
K=100N/m, H=1m, L=0.4m, m=1kg, f=2N；
When each parameter takes values above, it can ensure that gate has fully opened in t=0.126s, z=L, i.e. gate are carried
The time is risen less than 0.126s.
Wherein, K=200N/m, H=0.5m, L=0.4m are chosen, m=1kg, f=2N are experiment parameter reference data, full
The parameter value of sufficient requirement of experiment is ranging from：K ∈ [200,400], H ∈ [0.5,1], L ∈ (0,0.4], m ∈ (0,1], f ∈ (0,
2]。
As the coefficient of elasticity K=100N/m of elastic device 21, two elastic devices 21 are used.
Fig. 5 is the curve graph of the gate hoisting depth and promotion speed of the present invention.
For laboratory hydraulics dam break wave simulation, K=200N/m, H=0.5m, L=0.4m, m=1kg, f=2N are taken,
Gate hoisting depth and promotion speed are shown in Fig. 5.As seen from Figure 5, gate of the invention promotes speed and changes over time and first increases
Reduce after big, gate height changes over time first quick and back slow, this is conducive to the stopping after gate opening, and safety is good, and the present invention
Compared to gravity type gate opening mode, it is shorter that taking for same height is reached after gate opening.
As described above, describing the lifting device for dam break wave simulation of the present invention in detail, pass through elastic device and cunning
Wheel provides the power that gate rises so that the initial acceleration that gate is promoted is larger, and later stage acceleration is gradually reduced, and is conducive to contract
What short gate was promoted takes.The present invention not only eliminates the security risk brought using heavy lift gate, so that this
The lifting device of invention is upper more flexible in arrangement.In practical application, taken to shorten gate opening, it can be by increasing elasticity
Device quantity or the elastic device for replacing coefficient of elasticity bigger, the present invention make dam break wave simulation with more reliability and operable
Property.
It should be understood that the above-mentioned specific implementation mode of the present invention is used only for exemplary illustration or explains the present invention's
Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.In addition, appended claims purport of the present invention
Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing
Change example.
Claims (17)
1. a kind of lifting device for hydraulic analogy, which is characterized in that including：
Pillar (10) is used to support the lifting device (20)；
Lifting device (20), for passing through elastic pulling force fast lifting gate (60)；
The lifting device (20) is vertically arranged along pillar (10) or is obliquely installed along the pillar (10) so that lifting device
(20) it is in tensioning state and natural resiliency pulling force fast lifting gate (60) can be passed through；
Switching device (30) stops at the first stop position for controlling the lifting device (20), and discharges the lifting device
(20) make its lift gate (60)；
Wherein, first stop position corresponds to the elastic tension state of lifting device (20) and the closing shape of gate (60)
State.
2. the apparatus according to claim 1, wherein
The lifting device (20) includes：
Elastic device (21), one end are fixing end, and the other end is movable end；
First block (22), one end of which is fixed on the elastic device (21) movable end, the other end connects lock by drag-line (50)
Door (60).
3. the apparatus of claim 2, wherein
The switching device (30) includes：
Horizon bar (31) connects leverage horizontal through the pillar (10) in one end of the pillar (10) side
(32), in one end of the pillar (10) other side the second block of rigid connection (33)；
Leverage (32) is moved horizontally for controlling the horizon bar (31)；
Second block (33), for stopping that first block (22) makes it stop at the first stop position.
4. device according to claim 3, wherein
The leverage (32) includes：
Fang Xin (321) is connect with the horizon bar (31), and is fixed on pillar (10) side wall by active connection, energy
It is enough to be rotated around the active connection；
Stock (322), for controlling the Fang Xin (321) rotations, one end is rigidly connected with the Fang Xin (321), the other end
For handheld terminal.
5. device according to claim 4, wherein when rotating stock (322), the drawing in the stock (322)
Action is rotate in same direction with the lower Fang Xin (321), and horizon bar (31) is pulled to move horizontally, and drives the second block (33) horizontal
It is mobile so that second block (33) is detached from first block (22).
6. device according to claim 5, wherein when second block (33) and first block (22) are detached from
When, the elastic device (21) itself elastic pulling force effect under do contractile motion, with pull first block (22) from
First stop position drops to the second stop position；
Wherein, second stop position corresponds to the elastic shrinkage state of spring assembly (21) and the opening state of gate (60)
State.
7. device according to claim 4, wherein further include：
Secondary spring (311) is set on the horizon bar (31), and one end is fixedly connected with pillar (10), the other end with
The Fang Xin (321) is fixedly connected, stability when for ensureing that switching device (30) is closed.
8. according to claim 2,4-7 any one of them devices, wherein further include：
Cantilever beams (40) are fixed at the pillar (10) top, are used to support multiple fixed pulleys (41).
9. device according to claim 8, wherein the multiple fixed pulley (41) includes at least one main fixed pulley and n
A sub- fixed pulley, n >=1；
Described drag-line (50) one end passes through the main fixed pulley to connect first block (22), and the other end passes through n son fixed sliding
It is divided into n stock section drag-lines after wheel, the n stocks section drag-line connects the gate (60).
10. device according to claim 8, wherein height of the cantilever beams (40) apart from ground and the gate
(60) proportional region of height is 2.5:1-3:1.
11. according to claim 1-2,4-7,9-10 any one of them device, wherein further include：
Multiple draw rings (61) are arranged on the gate (60), and the drag-line (50) connects institute by the multiple draw ring (61)
State gate (60).
12. according to claim 1-2,4-7,9-10 any one of them device, wherein further include：
Card slot (70), vertical setting are equipped with sliding rail, the gate in gate (60) both sides, each card slot (70)
(60) it can vertically be slided up and down by the sliding rail.
13. according to claim 1-2,4-7,9-10 any one of them device, wherein K, H, z, m, f, L meet following formula：
Wherein, z is the function z=z (t) of t, then
Wherein, t indicates that gate promotes the time, and K indicates that the coefficient of elasticity of spring assembly, H indicate the hoisting depth of elastic device, z
Indicate that gate hoisting depth, m indicate that gate quality, f indicate that initial frictional, L indicate card slot height.
14. device according to claim 13, wherein
If gate, which promotes time t, meets following formula, then it represents that the gate opening speed can be used for simulating dam break wave simulation：
Wherein, h0It indicates the experiment depth of water, 0.1m, gravity acceleration g is taken to take 9.8m/s2, then 0.126s need to be less than by promoting time t.
15. device according to claim 13, wherein
Work as K=200N/m, H=0.5m, L=0.4m, m=1kg, f=2N；
K=100N/m, H=0.5m, L=0.4m, m=0.5kg, f=2N；
K=100N/m, H=0.5m, L=0.2m, m=1kg, f=2N；
K=100N/m, H=1m, L=0.4m, m=1kg, f=2N；
When each parameter takes values above, it can ensure that gate has fully opened in t=0.126s, when z=L, i.e. gate are promoted
Between be less than 0.126s.
16. device according to claim 14, wherein
Work as K=200N/m, H=0.5m, L=0.4m, m=1kg, f=2N；
K=100N/m, H=0.5m, L=0.4m, m=0.5kg, f=2N；
K=100N/m, H=0.5m, L=0.2m, m=1kg, f=2N；
K=100N/m, H=1m, L=0.4m, m=1kg, f=2N；
When each parameter takes values above, it can ensure that gate has fully opened in t=0.126s, when z=L, i.e. gate are promoted
Between be less than 0.126s.
17. device according to claim 15 or 16, wherein
K=200N/m, H=0.5m, L=0.4m are chosen, m=1kg, f=2N are experiment parameter reference data, meet requirement of experiment
Parameter value ranging from：K ∈ [200,400], H ∈ [0.5,1], L ∈ (0,0.4], m ∈ (0,1], f ∈ (0,2].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610258487.2A CN105788427B (en) | 2016-04-22 | 2016-04-22 | A kind of lifting device for hydraulic analogy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610258487.2A CN105788427B (en) | 2016-04-22 | 2016-04-22 | A kind of lifting device for hydraulic analogy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105788427A CN105788427A (en) | 2016-07-20 |
| CN105788427B true CN105788427B (en) | 2018-10-16 |
Family
ID=56399341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610258487.2A Expired - Fee Related CN105788427B (en) | 2016-04-22 | 2016-04-22 | A kind of lifting device for hydraulic analogy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105788427B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097872B (en) * | 2016-08-22 | 2022-04-01 | 浙江大学 | Automatic control circulating water tank for simulating instantaneous dam break |
| CN106087852B (en) * | 2016-08-22 | 2018-11-30 | 浙江大学 | For simulating the automatic planer-type gate of moment dam break |
| CN106702986A (en) * | 2017-03-21 | 2017-05-24 | 河海大学 | Assembly type farmland automatic water irrigation and stop device |
| CN107724344A (en) * | 2017-10-19 | 2018-02-23 | 西南交通大学 | A kind of automatically controlled gate for wide tank moment dam break experiment |
| CN109853456B (en) * | 2018-12-29 | 2020-04-21 | 河海大学 | Dam break wave generation test system |
| CN114045780B (en) * | 2021-11-26 | 2023-01-24 | 山东省水利科学研究院 | Automatic lifting gate for simulating instant dam break and using method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2460556Y (en) * | 2001-01-21 | 2001-11-21 | 吴俊卿 | Hand light water gate |
| CN2583067Y (en) * | 2002-11-21 | 2003-10-29 | 周沛凝 | Upward pressure type safety gate structure |
| CN101240531A (en) * | 2008-02-13 | 2008-08-13 | 黎宗圣 | Waterpower self-control type gate |
| CN103276688A (en) * | 2013-05-23 | 2013-09-04 | 中国长江三峡集团公司 | Experimental water channel device for simulating instantaneous and complete break of dam |
| CN103556608A (en) * | 2013-11-15 | 2014-02-05 | 大唐陈村水力发电厂 | Position control device for gate of hydropower station |
| CN104074172A (en) * | 2014-07-15 | 2014-10-01 | 庄天文 | Gate lifting, gate positioning and waterstop device for hydraulic gate station |
| CN205134281U (en) * | 2015-10-23 | 2016-04-06 | 西安理工大学 | Water conservancy is from open board valve system that turns over |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57165511A (en) * | 1981-04-02 | 1982-10-12 | Mitsubishi Heavy Ind Ltd | Sealing device |
| US9537183B2 (en) * | 2014-06-16 | 2017-01-03 | Custom Water Management Solutions, Llc | Automatic water control system for open ditch drainage |
-
2016
- 2016-04-22 CN CN201610258487.2A patent/CN105788427B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2460556Y (en) * | 2001-01-21 | 2001-11-21 | 吴俊卿 | Hand light water gate |
| CN2583067Y (en) * | 2002-11-21 | 2003-10-29 | 周沛凝 | Upward pressure type safety gate structure |
| CN101240531A (en) * | 2008-02-13 | 2008-08-13 | 黎宗圣 | Waterpower self-control type gate |
| CN103276688A (en) * | 2013-05-23 | 2013-09-04 | 中国长江三峡集团公司 | Experimental water channel device for simulating instantaneous and complete break of dam |
| CN103556608A (en) * | 2013-11-15 | 2014-02-05 | 大唐陈村水力发电厂 | Position control device for gate of hydropower station |
| CN104074172A (en) * | 2014-07-15 | 2014-10-01 | 庄天文 | Gate lifting, gate positioning and waterstop device for hydraulic gate station |
| CN205134281U (en) * | 2015-10-23 | 2016-04-06 | 西安理工大学 | Water conservancy is from open board valve system that turns over |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105788427A (en) | 2016-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105788427B (en) | A kind of lifting device for hydraulic analogy | |
| US10018544B2 (en) | Electromagnetic multiaxial fatigue testing machine | |
| CN104142278B (en) | Drop hammer type coupled static-dynamic loadingi impact experiment apparatus | |
| CN107313470A (en) | The experimental rig that the preconsolidation simulation Piled-box foundaton Long-term Cyclic Loading that pressurizes is acted on | |
| CN204626476U (en) | Based on geotechnical centrifuge, experimental rig that is vertical and torsion load is applied to pile foundation | |
| CN107855272A (en) | A kind of hydraulic engineering construction sand screening installation | |
| CN104264637B (en) | Clino-axis type hydraulic self-control gate | |
| AU2021277732B2 (en) | Large visual direct shear experiment platform for solid filling materials | |
| CN106192915A (en) | A kind of Synchronous lifting gate | |
| CN207553096U (en) | A kind of civil engineering piling equipment | |
| CN106769483B (en) | Simple loading unit is impacted in creep | |
| CN208932801U (en) | Tower crane stake bracing means | |
| CN204182413U (en) | A kind of jaw crusher | |
| CN206569945U (en) | A kind of crane arm Adaptable System of flat-top tower crane | |
| CN103663208B (en) | Dynamic compaction machinery and anti-squat system, anti-hypsokinesis system | |
| CN207714625U (en) | A kind of prestressing force regulation device of automatic elimination draw | |
| CN207919502U (en) | A kind of water conservancy and hydropower gate | |
| CN108252304A (en) | Electric impacting pile hammer | |
| CN205776105U (en) | A kind of Auto-drainage dam | |
| CN105423855B (en) | A kind of fixing device and its fixing means of hanging down | |
| CN204676900U (en) | For the portable casting platform that concrete column is built | |
| CN110258279B (en) | Automatic filling equipment for road shallow pits | |
| CN204112290U (en) | Clino-axis type hydraulic self-control gate | |
| CN205049357U (en) | Ram quick -witted analogue test device by force | |
| CN203668892U (en) | Hydraulic control steel strand opening and closing device of ultra-large type hydraulic steel gates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181016 |