CN110044593A - Trailing suction hopper dredger hobboing cutter drag head test method - Google Patents
Trailing suction hopper dredger hobboing cutter drag head test method Download PDFInfo
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- CN110044593A CN110044593A CN201910295582.3A CN201910295582A CN110044593A CN 110044593 A CN110044593 A CN 110044593A CN 201910295582 A CN201910295582 A CN 201910295582A CN 110044593 A CN110044593 A CN 110044593A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The present invention provides a kind of trailing suction hopper dredger hobboing cutter drag head test method, belongs to dredging work experimental technique field.Trailing suction hopper dredger hobboing cutter drag head test method provided by the invention, it being capable of the parameters such as dynamometry torque, revolving speed, power and its matching properties, including following tests step: formulating test plan, select the corresponding torque dynamometry pilot system of construction operation soil property, activation system prepares test, sets the speed of a ship or plane and rotary speed parameter, measurement torque, revolving speed, power and angle parameter, judge the compliance of measurement result and match best construction parameter, completes rating test.The beneficial effects of the present invention are: effectively solve the problems, such as hobboing cutter drag head installation variety classes rake teeth to torque, revolving speed, power, the angle measuring multiple parameters of hobboing cutter under the cutting test and different operating conditions of a variety of soil properties, the relationship that rake teeth rolls revolving speed, transverse moving speed and soil property of constructing can be studied from test, Rule Summary provides reference to study efficient hobboing cutter drag head mining clay device.
Description
Technical field
The invention belongs to dredging work experimental technique fields, are related to a kind of trailing suction hopper dredger hobboing cutter drag head test method.
Background technique
Trailing suction hopper dredger is a kind of most popular ship type in dredging work field, and traditional drag head is that it is excavated under water
The capital equipment of the soil properties such as soil, sandstone.Traditional drag head is that entire row assembles rake teeth under movable guard, when operation rake teeth drag head from
In weight and the lower insertion soil of fulcrum bar of the spring pressure effect, broken soil then is pulled by rake arms.Tradition rake is found in engineering practice
When excavating the hard soil properties such as rock, the ability of breaking ground of rake teeth is restricted head, and rake teeth cutting power is insufficient, while excavating depth
Limited, dredger construction efficiency substantially reduces.
To solve the above-mentioned problems, drag head construction efficiency is improved, traditional drag head mining clay mode is improved, is proposed
Rake teeth, i.e., be mounted on roller by the design of hobboing cutter drag head, and when rake teeth mining clay does rotation and translation motion, increases rake teeth
Cut the cutting force of soil.For hobboing cutter drag head, the design speed of drag head, drum rotation speed, the size selection of torque are particularly important.
Currently, hobboing cutter drag head exists in practical trailing suction hopper dredger work progress excavates power mismatch, digging operation face
Out-of-flatness, is even difficult to use in certain construction operating condition operating environments, and reason is not yet have trailing suction hopper dredger hobboing cutter drag head
Construction parameter calibration experimental ability, fail to develop the pilot system of calibration hobboing cutter drag head construction parameter, i.e., can not be directed to
Operation soil property and trailing suction hopper dredger route speed propose efficient hobboing cutter drag head revolving speed, therefore carry out corresponding pilot system
Research it is most important.
Summary of the invention
It is an object of the present invention to overcome the deficiencies of the prior art and provide a kind of trailing suction hopper dredger hobboing cutter drag head test side
Method, can the parameters such as dynamometry torque, revolving speed, power, angle and its matching properties, and by the design of experimental study hobboing cutter drag head
The drag head speed of a ship or plane, hobboing cutter revolving speed, torque select the matching relationship with operation soil property, provide ginseng to design efficient hobboing cutter drag head
It examines.
In order to achieve the above objectives, the present invention provides the following technical scheme that
Trailing suction hopper dredger hobboing cutter drag head test method provided by the invention utilizes trailing suction hopper dredger hobboing cutter drag head pilot system
Dynamometry torque, revolving speed, power, angle and its matching properties construction parameter.The trailing suction hopper dredger hobboing cutter drag head pilot system, including
Support frame, rake teeth, rake teeth roller, torque angular transducer, roller shaft coupling, motor shaft coupling, hydraulic motor, swinging frame, rotation
Adapter, purlin vehicle, rake arms, high-pressure hydraulic pump, capture card, processing terminal.
Hydraulic motor, torque angular transducer, rake teeth roller are sequentially arranged at below support frame, and the output of hydraulic motor
Axis passes through the input axis connection of motor shaft coupling and torque angular transducer, and the output shaft of torque angular transducer is joined by roller
Axis device is connect with one end of rake teeth roller；Several row's rake teeths are equipped on the outside of rake teeth roller, and rake teeth roller can be perpendicular to it
Axis direction rotation, and rake teeth is driven to cut soil；The other end of rake teeth roller is connect by rotary joint with high-pressure hydraulic pump, and
The surface of rake teeth roller is axially disposed a certain number of nozzles, and high-pressure hydraulic pump inputs high pressure water into rake teeth roller and through spraying
Mouth sprays, and reaches the function of auxiliary cutting soil.
Further, support frame is mounted below swinging frame, and purlin vehicle is connect by rake arms with swinging frame, and swinging frame can be around it
Trunnion axis rotation, and whole device is driven to swing；Purlin vehicle bottom is equipped with pulley, can navigate by water on test platform wave current sink, wave
Flowing water trench bottom is equipped with test soil.
Further, swinging frame can be rotated around the trunnion axis of its own, driven entire pilot system to swing, be with vertical
0 °, rotational angle is 0 °~50 °.
Further, rake teeth roller is columnar structured, can be rotated around its own central axis, the surface edge of rake teeth roller
It is axially provided with a certain number of nozzles, high pressure water is sprayed by nozzle in work.
Further, the both ends of rake teeth roller are limited by bearing and bearing block, and the bearing block is fixedly mounted on support
Below frame.
Further, bearing is rolling bearing, and both ends have rubber seal, can work under water.
Further, rake teeth is to be similar to " L " type；And rake teeth has two kinds of patterns of narrow tooth and wide tooth, is mounted on rake teeth
On on the outside of roller, setting angle can require be adjusted according to system testing, soft test is native or demand cutting depth compared with
It is small, it can choose low-angle installation, soil property is slightly hard or cutting depth is larger, can choose wide-angle installation.
Further, the roller shaft coupling can use yielding coupling, and there is a flat key slot at both ends, connection rake teeth roller and
Torque sensor.
Further, the motor shaft coupling can use yielding coupling, and there is flat key slot at both ends, and connection hydraulic motor is defeated
Shaft and torque sensor.
Further, the rotary joint can be around its own axis Arbitrary Rotation, and not shadow under working state of system
Ring the rotation of rake teeth roller.
Further, purlin vehicle is mobile by design speed on the wave current sink of test by the pulley of bottom.
Further, torque angular transducer is to fit together torque sensor and angular transducer, angular transducer
It covers on the output shaft on the right side of torque sensor, the receiver of angular transducer is attached on torque sensor；In the present invention, torque
Angular transducer is used to measure angle relatively vertical in the torque value, revolving speed and rake teeth rotation process of hobboing cutter.
Processing terminal includes drive module, measurement module and processing module；Drive module is to control hydraulic motor, swing
Frame, purlin turner are made；Measurement module obtains torque value, revolving speed and the rake teeth for the hobboing cutter that torque angular transducer measures by capture card
Relatively vertical angle-data in rotation process；Processing module is connect with measurement module, for calculate rake teeth cutting power and
Soil excavation amount, and according to soil excavation amount determine test compliance, and for design speed determine hobboing cutter best torque and
Optimum speed range.
Trailing suction hopper dredger hobboing cutter drag head test method provided by the invention, specifically includes following process:
(1) when needing to carry out the test of hobboing cutter drag head parameter calibration for certain soil, tester is formulated according to test demand
It draws, test soil, installation and debugging pilot system is laid in wave current sink；
(2) purlin vehicle and swinging frame are adjusted, so that rake teeth is moved to scheduled position, the rake teeth and wave being mounted on rake teeth roller
Test soil contact in gutter channel；
(3) gear of torque angular transducer, middle matter clay and the following soil convenient for dredging are selected according to test soil property
Using low torque gear, other soil use high torque gear, the setting driving speed of a ship or plane and rake teeth drum rotation speed；
(4) start drive module and measurement module, purlin vehicle is moved forward with the default speed of a ship or plane along wave current sink, passes through rake
The component installed on the dynamic swinging frame and swinging frame being attached thereto of armband is moved forward with identical speed, is contacted with test soil
Effect of the rake teeth by frictional force drives rake teeth rotation to advance, cutting test soil so that rake teeth roller is rotated around bearing；
(5) during the test of trailing suction hopper dredger hobboing cutter drag head pilot system advance cutting test soil, it is fixed on branch
Torque angular transducer on support acquires angle relatively vertical in the torque, revolving speed and rake teeth rotation process of hobboing cutter in real time,
And these data are transferred to capture card record, the corresponding speed of a ship or plane also matches record simultaneously；
(6) power and soil excavation amount of rake teeth cutting are calculated；
(6.1) power and record of rake teeth cutting are calculated according to the torque of hobboing cutter and revolving speed；
(6.2) according to the Design of Rotation hobboing cutter gear hobbing Movement Locus Equation of the speed of a ship or plane and hobboing cutter and hobboing cutter gear hobbing campaign rail is drawn
Trace curve determines soil excavation amount；
Further, hobboing cutter gear hobbing Movement Locus Equation proposed by the present invention, specific as follows:
xk=-x0-R·sin[wt+2π/z·(k-1)]
yk=-Rcos [wt+2 π/z (k-1)]
Wherein, x0Indicate horizontal displacement caused by the speed of a ship or plane, xkIndicate that kth row's (k=1~z) rake teeth moves in a forward direction
Horizontal distance, ykIndicate height of the kth row's rake teeth apart from mud face, R indicates the radius from rake teeth centre of the drum to rake teeth, w table
Show that the angular speed of rake teeth roller rotation, t indicate the time of movement, z indicates total number of rows of rake teeth on rake teeth roller section.
Further, hobboing cutter gear hobbing path curves are drawn according to above-mentioned hobboing cutter gear hobbing Movement Locus Equation, wherein horizontal seat
Mark indicates the horizontal distance that rake teeth moves in a forward direction, and ordinate indicates height of the kth row's rake teeth apart from mud face, different bent
Line indicates the track of the rake teeth of different location on rake teeth roller.
Above-mentioned hobboing cutter gear hobbing Movement Locus Equation is related with the revolving speed of hobboing cutter and the speed of a ship or plane, bent by hobboing cutter gear hobbing motion profile
Line can intuitively reflect: the revolving speed of hobboing cutter is bigger, and adjacent curve is nearlyr (seeming more intensive)；Revolving speed is smaller, and adjacent curve is got over
Far (seem more sparse)；The speed of a ship or plane is bigger, annular longer (the seeming more flat) of curve；The speed of a ship or plane is smaller, and the annular of curve is got over
Short (seeming more to compress).Failing the small Delta Region being added to below multiple groups curve is the soil amount for failing to excavate, with digging
Deep calculating total volume subtracts the soil amount for failing to excavate and soil excavation amount can be obtained.
(7) adjustment one-parameter variation, i.e., adjust rake teeth drum rotation speed under the same driving speed of a ship or plane, completes one-parameter measurement,
And test compliance is determined according to soil excavation amount, that is, judge whether soil excavation amount reaches performance assessment criteria, is tested if reaching
Rule are closed, irregularity is tested if being not achieved, in the case where rule are closed in test, continues multiple groups test, records the hobboing cutter of various combination
The drag head speed of a ship or plane, torque, revolving speed, power, angle and soil excavation amount data, and then the function cut according to soil excavation amount and rake teeth
Rate completes parameter calibration for design speed matching best torque and optimum speed range, in the case where testing irregularity, returns
The driving speed of a ship or plane is reset to step (3) and rake teeth drum rotation speed is tested.
In the present invention, parameter selected by parameter calibration is reamer around axis rolling circumference kinematic parameter and hobboing cutter horizontal shifting
The matching of feed motion parameter, circular motion parameter and feeding parameter is most important to the efficiency of hobboing cutter cutting soil, rolling circle
All kinematic parameters correspond to revolving speed；Hobboing cutter horizontal shifting feed motion parameter corresponds to the speed of a ship or plane.The speed of a ship or plane is same as known conditions
Different rotating speeds correspond to different power and soil excavation amount under the speed of a ship or plane, and the speed of a ship or plane is fast, the low drag head that is likely to result in of revolving speed is in mud face
On be pulled through or soil excavation amount is insufficient, therefore using soil excavation amount as a performance assessment criteria, excavation amount needs to reach a certain ratio
Or more, it is only effective rotation cutting, can thus match to obtain calibration conclusion by the multi-group data of test data sheet: at certain
Under one speed of a ship or plane a m/s, the revolving speed need >=b r/min of hobboing cutter can be only achieved the rotation excavation amount of certain proportion (%).Further, it examines
Consider the power of rake teeth cutting, i.e. optimum working efficiency, and then obtains the optimum speed of hobboing cutter.
Compared with prior art, the beneficial effects of the present invention are: realize the design of hobboing cutter drag head, variety classes rake teeth
It is more to cut soil property torque, revolving speed, power, angle under different operating conditions for installation and replacement and angular adjustment, effectively solution hobboing cutter drag head
Parameter measurement problem draws hobboing cutter gear hobbing path curves, establishes rake teeth angle and thickness of cutting, the relationship of cutting force, and
By the speed of a ship or plane, soil excavation amount and torque, revolving speed, power match, the different speed of a ship or plane, excavation amount and torque, revolving speed, power, angle are summarized
The regular relationship of degree provides reference to study efficient hobboing cutter drag head mining clay device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of traditional drag head；
Fig. 2 is the side view of pilot system provided by the invention；
Fig. 3 is the perspective view of hobboing cutter drag head provided by the invention；
Fig. 4 is the main view of hobboing cutter drag head provided by the invention；
Fig. 5 is the perspective view of support frame provided by the invention；
Fig. 6 is the sectional view of bearing block provided by the invention；
Fig. 7 is the outline drawing of rake teeth provided by the invention；
Fig. 8 is the perspective view of rake teeth roller provided by the invention；
Fig. 9 is the flow diagram of test method provided by the invention.
Figure 10 is hobboing cutter gear hobbing path curves figure provided by the invention；Abscissa indicates that rake teeth moves in a forward direction
Dynamic horizontal distance, ordinate indicate height of the kth row's rake teeth apart from mud face；Different curves indicate different location on rake teeth roller
Rake teeth track.
Numeral mark in figure:
Traditional drag head 100, movable guard 101, traditional rake teeth 102；
Support frame 1, hydraulic motor mounting base 1a, torque angular transducer mounting base 1b, bearing mounting base 1c, bearing block 2,
Elastic rubber circle 2a, bearing 3, rake teeth 4, rake teeth roller 5, torque angular transducer 6, roller shaft coupling 7, motor shaft coupling 8 are hydraulic
Motor 9, swinging frame 10, rotary joint 11, purlin vehicle 12, rake arms 13, pulley 14, test soil 15.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 is the structural schematic diagram of traditional drag head, and traditional drag head 100 is that entire row assembles traditional rake teeth under movable guard 101
102, tradition rake teeth 102 is embedded in soil under drag head self weight and the effect of fulcrum bar of the spring pressure when operation, is then drawn by rake arms
Dynamic broken soil.In engineering practice, traditional drag head 100 is when excavating the hard soil properties such as rock, the ability of breaking ground of traditional rake teeth 102
It is restricted, rake teeth cutting power is insufficient, while excavating depth is limited, and dredger construction efficiency substantially reduces.
And the invention proposes hobboing cutter drag head testing programs, and rake teeth is mounted on roller, when rake teeth mining clay, which does, revolves
Turn and translational motion, increases the cutting force of rake teeth cutting soil, and have studied hobboing cutter drag head and cut soil property under different operating conditions
Torque, revolving speed, power, angle measuring multiple parameters problem draw hobboing cutter gear hobbing path curves, establish rake teeth angle and cutting
The relationship of thickness, cutting force, and by the speed of a ship or plane, soil excavation amount and torque, revolving speed, power match, summarize the different speed of a ship or plane, excavation amount
With torque, revolving speed, power, angle regular relationship, provide reference to study efficient hobboing cutter drag head mining clay device.
As shown in Fig. 2 to Fig. 8, a kind of trailing suction hopper dredger hobboing cutter drag head pilot system, comprising: support frame 1, for installing examination
The components of check system；Hydraulic motor 9, is horizontally arranged on the installation seat plate of support frame 1, provides power for pilot system；Horse
Hydraulic motor 9 and torque angular transducer 6 are connected up to shaft coupling 8；Roller shaft coupling 7 connects torque angular transducer 6 and rake teeth
Roller 5；Be fixed at the top of torque angular transducer 6 on support frame 1, trunnion axis by shaft coupling respectively with hydraulic motor
9 and rake teeth roller 5 connect；The both ends of rake teeth roller 5 are limited by bearing 3 and bearing block 2, the right end axis connection of rake teeth roller 5
Rotary joint 11 installs rake teeth 4 on rake teeth roller 5, and rake teeth 4 be to be similar to " L " type, around itself axis when the work of rake teeth roller 5
Line rotation, drives 4 cutting test soil 15 of rake teeth；Rotary joint 11 connects high-pressure hydraulic pump, and high-pressure hydraulic pump is defeated into rake teeth roller 5
Enter high pressure water, high pressure water sprays auxiliary cutting test soil 15 out of rake teeth roller 5 nozzle；Support frame 1 is welded on swinging frame
On 10；Purlin vehicle 12 is connect by rake arms 13 with swinging frame 10, and pulley 14 is arranged to realize that entire pilot system exists in vehicle 12 bottom in purlin
It is mobile by design speed on wave current sink.
Further, support frame 1 is the steel construction with certain bearing capacity, is fixed on swinging frame 10 using welding manner
On, hydraulic motor mounting base 1a, torque angular transducer mounting base 1b, bearing mounting base 1c, such as Fig. 4 are provided on support frame 1
It is shown；Wherein hydraulic motor mounting base 1a is for installing hydraulic motor 9, and torque angular transducer mounting base 1b is for installing torque
Angular transducer 6, bearing mounting base 1c is for installing bearing block 2.
Further, the pulley 14 of 12 bottom of purlin vehicle can install two rows.
Further, swinging frame 10 can be rotated around trunnion axis, and entire pilot system is driven to swing, with it is vertical be 0 °, rotation
Angle is 0 °~50 °.
Further, rake teeth roller 5 is columnar structured, can be rotated around its own central axis, 5 surface edge of rake teeth roller
A certain number of nozzles axially are provided with, spray high pressure water in nozzle in work.
Further, the both ends of the rake teeth roller 5 are limited by bearing 3 and bearing block 2, and the fixed peace of the bearing block 2
Mounted in 1 lower section of support frame.
Further, bearing 3 is rolling bearing, and both ends have rubber seal, can work under water.
Further, flexible rubber circle 2a is set between bearing block 2 and bearing 3, plays sealing function.
Further, rake teeth 4 has two kinds of patterns of narrow tooth and wide tooth, is mounted on rake teeth roller 5, setting angle can basis
System testing requires to be adjusted.
Further, which further includes capture card and processing terminal, includes drive module, measurement mould in processing terminal
Block and processing module；Drive module works to control hydraulic motor 9, swinging frame 10, purlin vehicle 12；Measurement module passes through capture card
Collect data；Torque angular transducer 6 can pass through radio frequency signal or the torque of electromagnetic pulse signal real-time measurement hobboing cutter
Relatively vertical angle in value, 4 rotation process of revolving speed and rake teeth, and transfer data to capture card real-time recorded data；Processing
Module is connect with measurement module, to calculate the power and soil excavation amount of rake teeth cutting, determines to test according to soil excavation amount
Compliance, and determine for design speed the best torque and optimum speed range of hobboing cutter.
Trailing suction hopper dredger hobboing cutter drag head test method provided by the invention utilizes trailing suction hopper dredger hobboing cutter drag head pilot system
The construction parameters such as dynamometry torque, revolving speed, power, angle and its matching properties, as shown in figure 9, detailed process is as follows:
(1) when needing to carry out the test of hobboing cutter drag head parameter calibration for certain soil, tester is formulated according to test demand
It draws, test soil, installation and debugging pilot system is laid in wave current sink；
(2) purlin vehicle 12 and swinging frame 10 are adjusted, so that rake teeth 4 is moved to scheduled position, the rake being mounted on rake teeth roller 5
Tooth 4 is contacted with the test soil in wave current sink；
(3) according to test soil property select torque angular transducer 6 gear, middle matter clay and it is following convenient for dredging soil adopt
With low torque gear, other soil use high torque gear, the setting driving speed of a ship or plane and rake teeth drum rotation speed；
Torque angular transducer 6 is provided with two grades, i.e. low torque shelves and high torque shelves, every grade of torque value tool that can be measured
There is certain range, torque value is directly related with soil property, therefore needs to choose according to soil property before starting measurement module
The measuring gear of torque angular transducer 6.
(4) start drive module and measurement module, purlin vehicle 12 is moved forward along wave current sink with the default speed of a ship or plane, passed through
Rake arms 13 drives the component installed on the swinging frame 10 and swinging frame 10 that are attached thereto to move forward with identical speed, with test mud
Effect of the rake teeth 4 of 15 contact of soil by frictional force drives the rotation of rake teeth 4 to advance, cuts so that rake teeth roller 5 is rotated around bearing 3
Cut test soil 15；
(5) it during the test of trailing suction hopper dredger hobboing cutter drag head pilot system advance cutting test soil 15, is fixed on
Torque angular transducer 6 on support frame 1 acquires relatively vertical in 4 rotation process of torque, revolving speed and rake teeth of hobboing cutter in real time
Angle, and these data are transferred to capture card record, the corresponding speed of a ship or plane also matches record simultaneously；
(6) power and soil excavation amount of rake teeth cutting are calculated；
(6.1) power and record of rake teeth cutting are calculated according to the torque of hobboing cutter and revolving speed；
(6.2) according to the Design of Rotation hobboing cutter gear hobbing Movement Locus Equation of the speed of a ship or plane and hobboing cutter and hobboing cutter gear hobbing campaign rail is drawn
Trace curve determines soil excavation amount；
Hobboing cutter gear hobbing Movement Locus Equation proposed by the present invention, specific as follows:
xk=-x0-R·sin[wt+2π/z·(k-1)]
yk=-Rcos [wt+2 π/z (k-1)]
Wherein, x0Indicate horizontal displacement caused by the speed of a ship or plane, xkIndicate that kth row's (k=1~z) rake teeth moves in a forward direction
Horizontal distance, ykIndicate height of the kth row's rake teeth apart from mud face, R indicates the radius from rake teeth centre of the drum to rake teeth, w table
Show that the angular speed of rake teeth roller rotation, t indicate the time of movement, z indicates total number of rows of rake teeth on rake teeth roller section.
Further, hobboing cutter gear hobbing path curves are drawn according to above-mentioned hobboing cutter gear hobbing Movement Locus Equation, such as Figure 10 institute
Show, wherein abscissa indicates the horizontal distance that rake teeth moves in a forward direction, and ordinate indicates kth row's rake teeth apart from mud face
Height, different curves indicate the track of the rake teeth of different location on rake teeth rollers.
Above-mentioned hobboing cutter gear hobbing Movement Locus Equation is related with the revolving speed of hobboing cutter and the speed of a ship or plane, bent by hobboing cutter gear hobbing motion profile
Line can intuitively reflect: the revolving speed of hobboing cutter is bigger, and adjacent curve is nearlyr (seeming more intensive)；Revolving speed is smaller, and adjacent curve is got over
Far (seem more sparse)；The speed of a ship or plane is bigger, annular longer (the seeming more flat) of curve；The speed of a ship or plane is smaller, and the annular of curve is got over
Short (seeming more to compress).Failing the small Delta Region being added to below multiple groups curve is the soil amount for failing to excavate, with digging
Deep calculating total volume subtracts the soil amount for failing to excavate and soil excavation amount can be obtained.
Referring to Fig.1 shown in 0, the small triangle below every toothrow curve be the toothrow dig less than soil, usual latter toothrow
A part of previous toothrow can be dug up and dig the soil not fallen；If the curve of last toothrow cannot cover below the first toothrow
Small triangle, then this part soil has no idea to dig up, and calculates the excavation ratio within the scope of excavating depth accordingly.
(7) adjustment one-parameter variation, i.e., adjust rake teeth drum rotation speed under the same driving speed of a ship or plane, completes one-parameter measurement,
And test compliance is determined according to soil excavation amount, that is, judge whether soil excavation amount reaches performance assessment criteria, is tested if reaching
Rule are closed, irregularity is tested if being not achieved, in the case where rule are closed in test, continues multiple groups test, records the hobboing cutter of various combination
The drag head speed of a ship or plane, torque, revolving speed, power, angle and soil excavation amount data, and the function cut according to soil excavation amount and rake teeth 4
Rate completes parameter calibration for design speed matching best torque and optimum speed range, in the case where testing irregularity, returns
The driving speed of a ship or plane is reset to step (3) and rake teeth drum rotation speed is tested.
In the present invention, parameter selected by the parameter calibration is that reamer is horizontal horizontal around axis rolling circumference kinematic parameter and hobboing cutter
It is moved into kinematic parameter, the matching of circular motion parameter and feeding parameter is most important to the efficiency of hobboing cutter cutting soil, rolls
Circular motion parameter corresponds to revolving speed；Hobboing cutter horizontal shifting feed motion parameter corresponds to the speed of a ship or plane, and the speed of a ship or plane is as known conditions, together
Different rotating speeds correspond to different power and soil excavation amount under one speed of a ship or plane, and the speed of a ship or plane is fast, the low drag head that is likely to result in of revolving speed is in mud
It is pulled through on face or soil excavation amount is insufficient, therefore using soil excavation amount as a performance assessment criteria, excavation amount needs to reach a certain
More than ratio, it is only effective rotation cutting, can thus match to obtain calibration conclusion by the multi-group data of test data sheet:
Under a certain speed of a ship or plane a m/s, the revolving speed need >=b r/min of hobboing cutter can be only achieved the rotation excavation amount of certain proportion (%).Further,
Consider the power of rake teeth cutting, i.e. optimum working efficiency, and then obtains the optimum speed of hobboing cutter.
In the present invention, hobboing cutter drag head system carries out parameter matching according to soil property and test planning, and speed on the ground, rake teeth excavate
Thickness, hob teeth thickness of cutting, cutter diameter and cutting layer thickness these parameters are test setup parameter, the equivalent speed of a ship or plane and meter
Calculating revolving speed is then the calibration conclusion matched by the multi-group data of test data sheet.Such as rake suction is carried out for lightweight clay to dredge
The design parameter selection of the experiment measurement module of ship hobboing cutter construction parameter is as follows:
Wherein, calculating revolving speed is the optimum speed that the test method provided through the invention determines, the equivalent speed of a ship or plane then passes through
Revolving speed is calculated to further calculate to obtain.
In the above-mentioned embodiment for carrying out the construction of trailing suction hopper dredger hobboing cutter for lightweight clay, traditional rake teeth thickness of cutting D1
It can achieve 160mm for 50mm, hobboing cutter drag head thickness of cutting D2 of the present invention；When traditional drag head speed on the ground V1 is 1.02m/s, protect
Hold excavation amount under the same conditions: equivalent speed of a ship or plane V2=is calculated in V1*D1=V2*D2, i.e. 1.02*50=V2*160
0.32m/s；The speed of a ship or plane is set using 0.32m/s as purlin vehicle, is carried out test, using test method provided by the invention, is passed through multiple groups
It is 64r/min that test matching, which obtains hobboing cutter optimum speed,.
In summary, the present invention can set the speed of a ship or plane and drum rotation speed；It can according to need replacement rake teeth；It may be implemented
Acquired in real time in cutting process rake teeth torque, revolving speed, power, angle-data (torque sensor be it is existing, be used for other field
And aspect)；It can be realized parameter matching, obtain rule, and optimum matching parameter is obtained by Con trolling index.
Foregoing description is only the description to present pre-ferred embodiments, is not any restriction to the scope of the invention.Appoint
Any change or modification what those skilled in the art makes according to the technology contents of the disclosure above should all regard
For equivalent effective embodiment, the range of technical solution of the present invention protection is belonged to.
Claims (4)
1. a kind of trailing suction hopper dredger hobboing cutter drag head test method, using trailing suction hopper dredger hobboing cutter drag head pilot system dynamometry torque,
Revolving speed, power, angle and its matching properties construction parameter, which is characterized in that comprise the following processes:
(1) when needing to carry out the test of hobboing cutter drag head parameter calibration for certain soil, test plan is formulated according to test demand,
Test soil, installation and debugging pilot system are laid in wave current sink；
(2) purlin vehicle and swinging frame are adjusted, rake teeth is made to be moved to scheduled position, the rake teeth and wave current water being mounted on rake teeth roller
Test soil contact in slot；
(3) select the gear of torque angular transducer according to test soil property, middle matter clay and it is following convenient for dredging soil using low
Torque gear, other soil use high torque gear, the setting driving speed of a ship or plane and rake teeth drum rotation speed；
(4) start drive module and measurement module, purlin vehicle is moved forward with the default speed of a ship or plane along wave current sink, passes through rake arms band
The component installed on the dynamic swinging frame and swinging frame being attached thereto is moved forward with identical speed, the rake teeth contacted with test soil
By the effect of frictional force, so that rake teeth roller is rotated around bearing, rake teeth rotation is driven to advance, cutting test soil；
(5) during the test of trailing suction hopper dredger hobboing cutter drag head pilot system advance cutting test soil, it is fixed on support frame
On torque angular transducer acquire angle relatively vertical in the torque, revolving speed and rake teeth rotation process of hobboing cutter in real time, and will
These data are transferred to capture card record, and the corresponding speed of a ship or plane also matches record simultaneously；
(6) power and soil excavation amount of rake teeth cutting are calculated；
(6.1) power and record of rake teeth cutting are calculated according to the torque of hobboing cutter and revolving speed；
(6.2) according to the Design of Rotation hobboing cutter gear hobbing Movement Locus Equation of the speed of a ship or plane and hobboing cutter and to draw hobboing cutter gear hobbing motion profile bent
Line determines soil excavation amount；
(7) adjustment one-parameter variation, i.e., adjust rake teeth drum rotation speed under the same driving speed of a ship or plane, completes one-parameter measurement, and root
Test compliance is determined according to soil excavation amount, in the case where rule are closed in test, is continued multiple groups test, is recorded the hobboing cutter of various combination
The drag head speed of a ship or plane, torque, revolving speed, power, angle and soil excavation amount data, and then the function cut according to soil excavation amount and rake teeth
Rate matches the best torque and optimum speed range of hobboing cutter for design speed, completes parameter calibration, in test irregularity
In the case of, it returns to step (3) reset driving speed of a ship or plane and rake teeth drum rotation speed is tested.
2. trailing suction hopper dredger hobboing cutter drag head test method according to claim 1, it is characterised in that: step (6.2) is described
Hobboing cutter gear hobbing Movement Locus Equation it is as follows:
xk=-x0-R·sin[wt+2π/z·(k-1)]
yk=-Rcos [wt+2 π/z (k-1)]
Wherein, x0Indicate horizontal displacement caused by the speed of a ship or plane, xkIndicate the water that kth row's (k=1~z) rake teeth moves in a forward direction
Flat distance, ykIndicate height of the kth row's rake teeth apart from mud face, R indicates that the radius from rake teeth centre of the drum to rake teeth, w indicate rake
The angular speed of dental roller rotation, t indicate the time of movement, and z indicates total number of rows of rake teeth on rake teeth roller section.
3. trailing suction hopper dredger hobboing cutter drag head test method according to claim 1, it is characterised in that: the parameter calibration institute
Selecting parameter is reamer around axis rolling circumference kinematic parameter and hobboing cutter horizontal shifting feed motion parameter, rolling circumference kinematic parameter
Revolving speed corresponding to hobboing cutter；Hobboing cutter horizontal shifting feed motion parameter corresponds to the speed of a ship or plane；
The speed of a ship or plane is as known conditions, and different rotating speeds correspond to different power and soil excavation amount under the same speed of a ship or plane, is dug with soil
Pick amount needs to reach a certain ratio or more as a performance assessment criteria, excavation amount, is only effective rotation cutting, is remembered by test
The multi-group data of record matches to obtain calibration conclusion are as follows: at a certain speed of a ship or plane a m/s, the revolving speed of hobboing cutter could be reached in >=b r/min
To the rotation excavation amount of certain proportion (%).
4. trailing suction hopper dredger hobboing cutter drag head test method according to claim 3, it is characterised in that further include: it is determining most
After the good range of speeds, further, the power of rake teeth cutting, i.e. optimum working efficiency are considered, and then obtain the optimum speed of hobboing cutter.
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| CN110487663A (en) * | 2019-09-06 | 2019-11-22 | 中交疏浚技术装备国家工程研究中心有限公司 | Multi-function device for the research of Rock And Soil cutting scheme and cutter tooth optimization |
| CN111395433A (en) * | 2020-04-20 | 2020-07-10 | 中交疏浚技术装备国家工程研究中心有限公司 | Novel high-efficient harrow head of integral type |
| CN111395434A (en) * | 2020-04-20 | 2020-07-10 | 中交疏浚技术装备国家工程研究中心有限公司 | Novel trailing suction dredger |
| CN112095704A (en) * | 2020-09-09 | 2020-12-18 | 施红 | Hobbing cutter drive adjustment and overload protection system for excavation |
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| CN110487663A (en) * | 2019-09-06 | 2019-11-22 | 中交疏浚技术装备国家工程研究中心有限公司 | Multi-function device for the research of Rock And Soil cutting scheme and cutter tooth optimization |
| CN111395433A (en) * | 2020-04-20 | 2020-07-10 | 中交疏浚技术装备国家工程研究中心有限公司 | Novel high-efficient harrow head of integral type |
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| CN111395433B (en) * | 2020-04-20 | 2022-04-26 | 中交疏浚技术装备国家工程研究中心有限公司 | Novel high-efficient harrow head of integral type |
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| CN112095704B (en) * | 2020-09-09 | 2023-06-27 | 佛山拓研精密机械有限公司 | Hob driving adjusting and overload protecting system for square digging |
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