CN104612099A - Gate support friction characteristic test device and method for calculating opening and closing force of gate - Google Patents
Gate support friction characteristic test device and method for calculating opening and closing force of gate Download PDFInfo
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- CN104612099A CN104612099A CN201510003986.2A CN201510003986A CN104612099A CN 104612099 A CN104612099 A CN 104612099A CN 201510003986 A CN201510003986 A CN 201510003986A CN 104612099 A CN104612099 A CN 104612099A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
- E02B1/02—Hydraulic models
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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Abstract
The invention discloses a gate support friction characteristic test device and method for calculating opening and closing force of a gate, provides a testing method and device for testing friction characteristics of supporting materials and water seal materials, and provides a method for calculating the opening and closing force of the gate on the basis of the friction characteristics obtained by the device. The device is characterized in that the device comprises a supporting portion, a horizontal moving portion, a vertical pressurizing portion, a water adding test component, a pull force measuring portion and other components; the supporting portion is adopted as the basis, and supports other portions and the test piece, the horizontal moving portion is arranged on the supporting portion, and pulls the test piece to slide in the horizontal direction, the vertical pressurizing portion is mounted on the horizontal moving portion to pressurize the test piece, the water adding test component is arranged on the supporting portion to add water to the test piece, and the pull force measuring portion is arranged on the supporting portion to measure horizontal pull force. The device and method belong to the field of water conservancy project model tests. The test method is utilized for giving a gate supporting friction characteristic test and calculation method close to the true condition, the minimum safety capacity of an opening and closing machine is given through gate supporting friction characteristics and opening and closing force calculation values of the characteristics given by the test method, and investment is saved.
Description
Technical field
The present invention relates to a kind of gate calculating force of opening and closing and support experiment of friction performance apparatus and method, especially a kind of test method simultaneously simulating each several part frictions such as hydraulic engineering gate slide block, roller, sprocket wheel, water seal, belongs to hydraulic engineering test field.
Background technology
Support and the sealing new material of hydraulic engineering gate continue to bring out, and its frictional behavior is had nothing in common with each other.The accurate Calculation of frictional behavior to force of opening and closing of material produces a very large impact.In the prior art, the method measuring friction factor is exactly conventional normal pressure and the ratio of pulling force.But the gate of hydraulic engineering generally uses for a long time in the environment of high pressure, high humidity, and support and water-blocking material section configuration irregular, the material friction coefficient that records of use conventional means truly can not be reflected in the actual frictional behavior under high pressure, high humidity, complicated contact surface condition.Some complicated macromolecular material, even can enter pressure inelastic region exceeding under certain pressure.In gate design process, the calculating Primary Reference gate backing material of headstock gear capacity and the frictional behavior of water-blocking material, if therefore gate support frictional behavior can not Obtaining Accurate, will critical data be lacked in force of opening and closing calculates, the type selecting of headstock gear cannot be completed; Or because frictional behavior is measured inaccurate, headstock gear selects improper initiation engineering accident and economic loss.
Summary of the invention
A kind of gate calculating force of opening and closing of the present invention supports experiment of friction performance apparatus and method just for the frictional behavior of test backing material and water-blocking material provides a kind of experimental rig and method, and provides a kind of frictional behavior obtained based on this equipment to calculate the method for force of opening and closing.
Specifically this device comprises: support section, translation part, press perpendicular part, test for added water assembly, tension measurement part and other assemblies; Based on support section, support other each several parts and test specimen; Translation part is arranged on support section, pulls test specimen to slide in the horizontal direction; Press perpendicular part is arranged on to test specimen pressurization in translation part, and test for added water assembly is arranged on for test specimen adds water on support section, and tension measurement part is arranged on support section, measures horizontal pull;
Described support section comprises:
Support, temple, strut (limit), strut (in), inner support, guide rod, upper beam, bottom girder, test specimen cushion, bracket, motor mounting plate;
Described translation part comprises:
Travel switch seat, rope sheave frame (lower-left), rope sheave frame (upper left), rope sheave, wire rope, rope cramp (8mm), rope cramp (6mm), base of the carrier head, rack support, tooth bar, rope sheave frame pad, rope sheave frame (left side), traverse gear, translation motor transmission, tooth bar seat;
Described press perpendicular part comprises:
Cross-arm, lifter wheel, motor gear, lower left-handed screw, upper right handed screw, gravity steel, lifting motor, specimen stage, elevator, depression bar, limit switch seat (under), limit switch seat (on);
Described test for added water assembly comprises:
Discharging valve, water accumulating disc;
Described tension measurement part comprises:
Pull head, pulling force sensor, connector, test specimen;
Other described assemblies comprise:
Rear right baffle plate, left back baffle plate, control box, front right baffle plate lifter plate pad, front right baffle-plate, case, o RunddichtringO (A012), o RunddichtringO (A016).
The backing material test section that fixed gate is selected on level table, gate slot slide rail is intended with gravity beam form, and accurate water booster system is set above gravity beam, simulate the actual pressure that this supporting section bears under gate operating condition, (M1) supporting section frictional behavior when gate runs is calculated, (M2) simulates gate startup optimization speed and mode again, obtains the friction factor under full analog form.
Described (M1) calculates supporting section frictional behavior when gate runs and refers to:
(1) for routine use gate: first carry out fatigue test to backing material test section: under design conditions pressure, carry out there is the friction of water state fatigue, rub 1000 times; Secondly backing material test section frictional behavior is measured: arranging backing material test section is operation condition actual pressure; The gross head pressure at Jeakage through Sluice Sealant place when described actual pressure refers to and checks operating mode; Under described pressure, perform experiment of friction performance 30 times, record pulling force graph, to get in 30 graphs maximum value as the value of thrust f calculating supporting section frictional behavior when gate runs; Inventor finds after test of many times, and the value of thrust f that the method obtains is greater than and the most close to the value of thrust of daily gate;
(2) door is enabled for accident: first linkage voltage test is carried out to backing material test section: under check working condition pressure, carry out having water state to pressurize, the continuous pressure time is 15 days; Next measures backing material test section frictional behavior: arrange backing material test section for checking operating mode actual pressure, perform experiment of friction performance 30 times, record pulling force graph, to get in 30 graphs maximum value as the value of thrust f calculating supporting section frictional behavior when gate runs; Inventor finds after test of many times, and the value of thrust f that the method obtains is greater than and enables the value of thrust of door the most close to accident;
Described (M2) simulates gate startup optimization speed and mode, and the friction factor obtained under full analog form refers to:
For gate, different headstock gear capacity, gate is different by the process carried out, and therefore adopts feedback analysis method to arrange the backing material test section method of operation in the present invention, specifically comprises:
A, initial setting headstock gear capacity, computational methods are:
The clean hydrodynamic force of theoretical hoisting capacity=f+G+; Utilize theoretical hoisting capacity to choose headstock gear capacity, obtain the hoisting capacity F selecting headstock gear according to headstock gear capacity
1;
Above-mentioned f is the value of thrust obtained in (M1), and G is gate gravity, and clean hydrodynamic force is recorded by model testing;
Owing to not having gate to participate in process of the test, also do not have clean hydrodynamic force to participate in, therefore the value of thrust of experimental rig is:
F
1=select the hoisting capacity F of headstock gear
1the clean hydrodynamic force of-G-;
B, setting experimental rig value of thrust are f
1, routine use gate is tested according to (1) step, door is enabled for accident and tests according to (2) step, record pulling force graph;
C, on recorded pulling force graph, select maximum pull as experimental rig value of thrust f
1repeat step b;
D, when the pulling force graph maximum pull value difference of twice record is less than 3%, terminate test, to get in the last pulling force graph recorded for twice maximum value as frictional force f
end;
E, utilize formula μ=f
end/ N calculates friction factor;
F, headstock gear capacity=f
endthe clean hydrodynamic force of+G+.
The present invention has following beneficial effect:
(1) gate that the present invention utilizes test method to give relatively truth supports frictional behavior Measurement and Computation method;
(2) gate provided by this test method supports frictional behavior and hoisting capacity calculated value gives headstock gear minimum safe capacity, saves investment.
Accompanying drawing explanation
The gate that Fig. 1 calculates force of opening and closing supports experiment of friction performance device uncovered elevation;
The gate that Fig. 2 calculates force of opening and closing supports experiment of friction performance device uncovered rear elevation;
The gate that Fig. 3 calculates force of opening and closing supports experiment of friction performance device uncovered top view;
The gate that Fig. 4 calculates force of opening and closing supports experiment of friction performance device uncovered lateral view;
The gate support experiment of friction performance device that Fig. 5 calculates force of opening and closing adds a cover other direction lateral view;
The gate support experiment of friction performance device that Fig. 6 calculates force of opening and closing adds a cover rear elevation;
The gate that Fig. 7 calculates force of opening and closing supports experiment of friction performance device I position enlarged drawing;
The gate that Fig. 8 calculates force of opening and closing supports rear left view stereo figure on experiment of friction performance device;
The gate that Fig. 9 calculates force of opening and closing supports experiment of friction performance device and to go forward LOOK RIGHT stereogram;
The gate that Figure 10 calculates force of opening and closing supports front left view stereo figure under experiment of friction performance device;
The gate that Figure 11 calculates force of opening and closing supports rear left view stereo figure under experiment of friction performance device.
The gate support experiment of friction performance device that Figure 12 calculates force of opening and closing adds rear left view stereo figure on case.
1 support, 2 rear right baffle plates, 3 temples, 4 struts (limit), 5 guide rods, 6 lifter wheels, 7 struts (in), 8 limit switch seats (under), 9 times left-handed screws, 10 cross-arms, 11 inner supports, 12 travel switch seats, 13 discharging valves, 14 left back baffle plates, 15 water accumulating discs, 16 rope sheave framves (lower-left), 17 rope sheave framves (upper left), 18 rope sheaves, 19 wire rope, 20 rope cramps (8mm), 21 rope cramps (6mm), 22 base of the carrier head, 23 rack support, 24 tooth bars, right handed screw on 25, 26 upper beams, 27 rope sheave framves (left side), 28 bottom girders, 29 gravity steel, 30 control boxes, 31 motor gears, 32 lifting motors, 33 traverse gears, 34 translation motor transmissions, 35 pull heads, 36 pulling force sensors, 37 connectors, 38o RunddichtringO (A012), 39 front right baffle plate lifter plate pads, 40 test specimen cushions, 41o RunddichtringO (A016), 43 test specimens, 44 tooth bar seats, 45 limit switch seats (on), 46 specimen stages, right baffle-plate before 47, 48 rope sheave frame pads, 49 brackets, 50 depression bars, 51 motor mounting plates, 52 elevators, 53 cases, 54 gravity beams.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in detail.
A kind of gate calculating force of opening and closing of the present invention supports experiment of friction performance apparatus and method just for the frictional behavior of test backing material and water-blocking material provides a kind of experimental rig and method, and provides a kind of frictional behavior obtained based on this equipment to calculate the method for force of opening and closing.
Specifically this device comprises: support section, translation part, press perpendicular part, test for added water assembly, tension measurement part and other assemblies; Based on support section, support other each several parts and test specimen; Translation part is arranged on support section, pulls test specimen to slide in the horizontal direction; Press perpendicular part is arranged on to test specimen pressurization in translation part, and test for added water assembly is arranged on for test specimen adds water on support section, and tension measurement part is arranged on support section, measures horizontal pull;
Described support section comprises:
Support 1, temple 3, strut (limit) 4, strut (in) 7, inner support 11, guide rod 5, upper beam 26, bottom girder 28, test specimen cushion 40, bracket 49, motor mounting plate 51;
Described translation part comprises:
Travel switch seat 12, rope sheave frame (lower-left) 16, rope sheave frame (upper left) 17, rope sheave 18, wire rope 19, rope cramp (8mm) 20, rope cramp (6mm) 21, base of the carrier head 22, rack support 23, tooth bar 24, rope sheave frame pad 48, rope sheave frame (left side) 27, traverse gear 33, translation motor transmission 34, tooth bar seat 44;
Described press perpendicular part comprises:
Cross-arm 10, lifter wheel 6, motor gear 31, lower left-handed screw 9, upper right handed screw 25, gravity steel 29, lifting motor 32, specimen stage 46, elevator 52, depression bar 50, limit switch seat (under) 8, limit switch seat (on) 45;
Described test for added water assembly comprises:
Discharging valve 13, water accumulating disc 15;
Described tension measurement part comprises:
Pull head 35, pulling force sensor 36, connector 37, test specimen 43;
Other described assemblies comprise:
Rear right baffle plate 2, left back baffle plate 14, control box 30, front right baffle plate lifter plate pad 39, front right baffle-plate 47, case 53, o RunddichtringO (A012) 38, o RunddichtringO (A016) 41.
The backing material test section selected by gate is placed on specimen stage 46 as test specimen 43, gate slot slide rail is simulated with gravity beam 54, and accurate water booster system is set above gravity beam 54, simulate the actual pressure that this backing material test section bears under gate operating condition, (M1) test and calculate backing material test section frictional behavior when gate runs, (M2) simulate gate startup optimization speed and mode, obtain the friction factor under full analog form.
Described (M1) tests and calculates backing material test section frictional behavior when gate runs and refer to:
(1) for routine use gate: first carry out fatigue test to backing material test section (supporting section): 1.78MPa under design conditions pressure, carry out there is the friction of water state fatigue, rub 1000 times; Secondly backing material test section frictional behavior is measured: arranging backing material test section is operation condition actual pressure 1.78MPa; The gross head pressure at Jeakage through Sluice Sealant place when described actual pressure refers to design conditions; Under described pressure, perform experiment of friction performance 30 times, record pulling force graph, to get in 30 graphs maximum value as the value of thrust f calculating supporting section frictional behavior when gate runs
daily=203kN; The frictional force calculating whole gate is: F
t is daily=20f
daily=4060kN, the frictional force of actual measurement prototype gate is: F
p is daily=3798kN; Inventor finds after test of many times, the value of thrust F that the method obtains
t is dailyto be greater than and the most close to the value of thrust of daily gate;
(2) enable door for accident: first carry out linkage voltage test to backing material test section: 1.95MPa under check operating mode pressure, carry out having water state to pressurize, the continuous pressure time is 15 days; Next measures backing material test section frictional behavior: arrange backing material test section for checking operating mode actual pressure 1.95MPa, perform experiment of friction performance 30 times, record pulling force graph, to get in 30 graphs maximum value as the value of thrust f calculating supporting section frictional behavior when gate runs
accident=227kN; The frictional force calculating whole gate is: F
t accident=20f=4540kN, the frictional force of actual measurement prototype gate is: F
p accident=4250kN; Inventor finds after test of many times, the value of thrust F that the method obtains
t accidentbe greater than and enable the value of thrust of door the most close to accident;
Described (M2) simulates gate startup optimization speed and mode, and the friction factor obtained under full analog form refers to:
For gate, different headstock gear capacity, gate is different by the process carried out, and therefore adopts feedback analysis method to arrange the backing material test section method of operation in the present invention, specifically comprises:
A, initial setting headstock gear capacity, computational methods are:
The clean hydrodynamic force of theoretical hoisting capacity F=f+G+; Utilize theoretical hoisting capacity to choose headstock gear capacity, obtain the hoisting capacity F selecting headstock gear according to headstock gear capacity
1;
For the value of thrust 4060kN that the f that routine use gate is above-mentioned is acquisition in (M1), G is gate gravity 1200kN, and clean hydrodynamic force 11153kN is recorded by model testing; Theoretical hoisting capacity=4060+1200+11153=16413kN; The hoisting capacity F of the headstock gear selected
1=18000kN;
Owing to not having gate to participate in process of the test, also do not have clean hydrodynamic force to participate in, therefore the value of thrust of experimental rig is:
F
1=select the hoisting capacity F of headstock gear
1the clean hydrodynamic force of-G-; f
1=18000-1200-11153=5647kN;
Enabling the above-mentioned f of gate for accident is the value of thrust 4250kN obtained in (M2), and G is gate gravity 980kN, and clean hydrodynamic force 10167kN is recorded by model testing; Theoretical hoisting capacity=4250+980+10167=15397kN; The hoisting capacity F of the headstock gear selected
1=16000kN;
Owing to not having gate to participate in process of the test, also do not have clean hydrodynamic force to participate in, therefore the value of thrust of experimental rig is:
F
1=select the hoisting capacity F of headstock gear
1the clean hydrodynamic force of-G-; f
1=16000-980-10167=4853kN
B, for routine use gate, setting experimental rig value of thrust is f
1=5647kN, tests according to (1) step, enables door for accident, and setting experimental rig value of thrust is f
1=4853kN tests according to (2) step, record pulling force graph;
C, on recorded pulling force graph, select maximum pull as experimental rig value of thrust f
1repeat step b,
For routine use gate f
1=5742kN, enables a f for accident
1=4894kN;
D, when the pulling force graph maximum pull value difference of twice record is less than 3%, terminate test, to get in the last pulling force graph recorded for twice maximum value as frictional force f
end;
For routine use gate (5742-5647)/5647=1.7%<3%, so f
end=5742kN; Door (4894-4853)/4853=0.8%<3% is enabled, so f for accident
end=4894kN;
E, utilize formula μ=f
end/ N calculates friction factor;
For routine use gate μ=f
end/ N=5742kN/ (1.78MPa × 20m
2)=0.161
Gate μ=f is enabled for accident
end/ N=4894kN/ (1.92MPa × 12m
2)=0.212
F, for routine use gate: headstock gear hoisting capacity=f
endclean hydrodynamic force=the 5742+1200+11153=18095kN of+G+, therefore routine use gate hoist capacity is 18200kN;
Gate is enabled for accident: headstock gear hoisting capacity=f
endclean hydrodynamic force=the 4894+980+10167=16041kN of+G+, enabling gate hoist capacity because of the accident is 16200kN.
Claims (5)
1. the gate calculating force of opening and closing supports an experiment of friction performance device, and it is characterized in that, described device comprises: support section, translation part, press perpendicular part, test for added water assembly, tension measurement part and other assemblies; Based on support section, support other each several parts and test specimen; Translation part is arranged on support section, pulls test specimen to slide in the horizontal direction; Press perpendicular part is arranged on to test specimen pressurization in translation part, and test for added water assembly is arranged on for test specimen adds water on support section, and tension measurement part is arranged on support section, measures horizontal pull.
2. a kind of gate calculating force of opening and closing according to claim 1 supports experiment of friction performance device, it is characterized in that: described support section comprises:
Support, temple, strut (limit), strut (in), inner support, guide rod, upper beam, bottom girder, test specimen cushion, bracket, motor mounting plate;
Described translation part comprises:
Travel switch seat, rope sheave frame (lower-left), rope sheave frame (upper left), rope sheave, wire rope, rope cramp (8mm), rope cramp (6mm), base of the carrier head, rack support, tooth bar, rope sheave frame pad, rope sheave frame (left side), traverse gear, translation motor transmission, tooth bar seat;
Described press perpendicular part comprises:
Cross-arm, lifter wheel, motor gear, lower left-handed screw, upper right handed screw, gravity steel, lifting motor, specimen stage, elevator, depression bar, limit switch seat (under), limit switch seat (on);
Described test for added water assembly comprises:
Discharging valve, water accumulating disc;
Described tension measurement part comprises:
Pull head, pulling force sensor, connector, test specimen;
Other described assemblies comprise:
Rear right baffle plate, left back baffle plate, control box, front right baffle plate lifter plate pad, front right baffle-plate, case, o RunddichtringO (A012), o RunddichtringO (A016).
3. the gate calculating force of opening and closing supports an experiment of friction performance method, it is characterized in that:
The backing material test section that fixed gate is selected on level table, gate slot slide rail is intended with gravity beam form, and accurate water booster system is set above gravity beam, simulate the actual pressure that this supporting section bears under gate operating condition, (M1) supporting section frictional behavior when gate runs is calculated, (M2) simulates gate startup optimization speed and mode again, obtains the friction factor under full analog form.
4. a kind of gate calculating force of opening and closing according to claim 3 supports experiment of friction performance method, it is characterized in that: described (M1) calculates supporting section frictional behavior when gate runs and refer to:
(1) for routine use gate: first carry out fatigue test to backing material test section: under design conditions pressure, carry out there is the friction of water state fatigue, rub 1000 times; Secondly backing material test section frictional behavior is measured: arranging backing material test section is operation condition actual pressure; The gross head pressure at Jeakage through Sluice Sealant place when described actual pressure refers to and checks operating mode; Under described pressure, perform experiment of friction performance 30 times, record pulling force graph, to get in 30 graphs maximum value as the value of thrust f calculating supporting section frictional behavior when gate runs; Inventor finds after test of many times, and the value of thrust f that the method obtains is greater than and the most close to the value of thrust of daily gate;
(2) door is enabled for accident: first linkage voltage test is carried out to backing material test section: under check working condition pressure, carry out having water state to pressurize, the continuous pressure time is 15 days; Next measures backing material test section frictional behavior: arrange backing material test section for checking operating mode actual pressure, perform experiment of friction performance 30 times, record pulling force graph, to get in 30 graphs maximum value as the value of thrust f calculating supporting section frictional behavior when gate runs; Inventor finds after test of many times, and the value of thrust f that the method obtains is greater than and enables the value of thrust of door the most close to accident.
5. a kind of gate calculating force of opening and closing according to claim 3 supports experiment of friction performance method, and it is characterized in that: described (M2) simulates gate startup optimization speed and mode, the friction factor obtained under full analog form refers to:
For gate, different headstock gear capacity, gate is different by the process carried out, and therefore adopts feedback analysis method to arrange the backing material test section method of operation in the present invention, specifically comprises:
A, initial setting headstock gear capacity, computational methods are:
The clean hydrodynamic force of theoretical hoisting capacity=f+G+; Utilize theoretical hoisting capacity to choose headstock gear capacity, obtain the hoisting capacity F selecting headstock gear according to headstock gear capacity
1;
Above-mentioned f is the value of thrust obtained in (M1), and G is gate gravity, and clean hydrodynamic force is recorded by model testing;
Owing to not having gate to participate in process of the test, also do not have clean hydrodynamic force to participate in, therefore the value of thrust of experimental rig is:
F
1=select the hoisting capacity F of headstock gear
1the clean hydrodynamic force of-G-;
B, setting experimental rig value of thrust are f
1, routine use gate is tested according to (1) step, door is enabled for accident and tests according to (2) step, record pulling force graph;
C, on recorded pulling force graph, select maximum pull as experimental rig value of thrust f
1repeat step b;
D, when the pulling force graph maximum pull value difference of twice record is less than 3%, terminate test, to get in the last pulling force graph recorded for twice maximum value as frictional force f
end;
E, utilize formula μ=f
end/ N calculates friction factor;
F, headstock gear capacity=f
endthe clean hydrodynamic force of+G+.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510003986.2A CN104612099B (en) | 2015-01-05 | 2015-01-05 | A kind of gate support experiment of friction performance device and method calculating force of opening and closing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510003986.2A CN104612099B (en) | 2015-01-05 | 2015-01-05 | A kind of gate support experiment of friction performance device and method calculating force of opening and closing |
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| CN104612099A true CN104612099A (en) | 2015-05-13 |
| CN104612099B CN104612099B (en) | 2019-03-05 |
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ID=53146728
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|---|---|---|---|
| CN201510003986.2A Active CN104612099B (en) | 2015-01-05 | 2015-01-05 | A kind of gate support experiment of friction performance device and method calculating force of opening and closing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068411A (en) * | 2019-05-14 | 2019-07-30 | 天津大学前沿技术研究院 | A kind of measurement gate moves the experimental rig and method of dynamic frictional resistance when water closes |
| CN110082079A (en) * | 2019-04-10 | 2019-08-02 | 河海大学 | Standing wire hydraulic steel gate hoisting capacity condition monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082079A (en) * | 2019-04-10 | 2019-08-02 | 河海大学 | Standing wire hydraulic steel gate hoisting capacity condition monitoring device |
| CN110068411A (en) * | 2019-05-14 | 2019-07-30 | 天津大学前沿技术研究院 | A kind of measurement gate moves the experimental rig and method of dynamic frictional resistance when water closes |
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|---|---|
| CN104612099B (en) | 2019-03-05 |
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