CN105507226B - Exclude the method and its displacement detector of transmission rod Bending Influence screw plate loading test accuracy - Google Patents
Exclude the method and its displacement detector of transmission rod Bending Influence screw plate loading test accuracy Download PDFInfo
- Publication number
- CN105507226B CN105507226B CN201610061487.3A CN201610061487A CN105507226B CN 105507226 B CN105507226 B CN 105507226B CN 201610061487 A CN201610061487 A CN 201610061487A CN 105507226 B CN105507226 B CN 105507226B
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- transmission shaft
- force transmission
- sleeve pipe
- transmission rod
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Soil Sciences (AREA)
- Analytical Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention is the method and its displacement detector for excluding transmission rod Bending Influence screw plate loading test accuracy.The displacement detector for detecting screw pressure-bearing plate sinking displacement amount is arranged at the lowermost end of the i.e. hollow transmission rod in underground, the problem of transmission rod Bending Influence screw plate loading test accuracy can be excluded completely by the present invention.Displacement detecting uses linear pattern capacitive displacement transducer, its dynamic, fixed grid pole plate is separately positioned on the hollow force transmission shaft of displacement detector and drive joint, the fixation of drive joint position is that fixed grid pole plate is fixed during measurement, and moving grid pole plate can accurately detect its displacement with hollow force transmission shaft loading movement.The rotary presser device that the present invention acts on sleeve pipe uses rig, and the loading system of hollow transmission rod uses hydraulic jack, with the characteristics of operating method is ripe, adaptability is extensive.
Description
Technical field
The invention belongs to screw plate loading test method, transmission rod Bending Influence helical plate load is excluded more particularly, to one kind
The method and its displacement detector of lotus experiment accuracy.
Background technology
Screw plate loading test is applied to determine bearing capacity, deformation modulus of deep ground earth or the following foundation soil of water level etc.
Geotechnical Parameter, foundation is provided for the design such as pile foundation, foundation ditch.
Screw plate loading test is further applied load by transmission rod to spiral shape bearing plate, is observed and foundation soil body under data board
The sinking displacement of compression back plate, so as to obtain load-sinking displacement-time curve of foundation soil, and then obtains different depths
Spend the design parameters such as bearing capacity, the deformation modulus of foundation soil.
Existing screw plate loading test equipment includes force cell and displacement measuring device, and spiral plate passes through square tenon grafting
In force cell bottom interface, interface wears company with square tenon by iron wire.Displacement measuring device is arranged on ground, by being fixed on power transmission
The sedimentation legs of bar, it is made up of in the datum line beam of earth's surface, Magnetic gauge stand and electromechanical dial gauge earth anchorage, electromechanical dial gauge
Gauge head is contacted by connecting rod with sedimentation legs.
Obviously, the displacement measuring device of existing screw plate loading test equipment can not exclude transmission rod bend by pressure deformation institute
The displacement measurement error of generation.
In order to avoid transmission rod bend by pressure deforms the error produced to spiral shape bearing plate sinking displacement amount, notification number
A kind of CN202595720U utility model ' screw plate loading test equipment ' discloses following technical scheme：It include sleeve pipe,
Transmission rod, spiral shape bearing plate, force cell and multiple it is socketed in spaced reciprocally along transmission rod short transverse on transmission rod
Annular guide plate；External diameter of the internal diameter of multiple annular guide plates with transmission rod matches；Multiple annular guide plates are also located at
In sleeve pipe, and internal diameter of the external diameter with sleeve pipe of each annular guide plate matches.
The content of the invention
The present invention be in order to solve the displacement measuring device of existing screw plate loading test equipment can not exclude transmission rod by
Flexural deformation is pressed to produce the technical problem of displacement measurement error, and open one kind excludes the examination of transmission rod Bending Influence helical plate load
Test the method and its displacement detector of accuracy.
The method of the exclusion transmission rod Bending Influence screw plate loading test accuracy of the present invention：The bottom of sleeve pipe connection combination
The hollow force transmission shaft of synchronous rotation is set in the displacement detector of the synchronous rotation of end connection, displacement detector housing,
Hollow force transmission shaft is moved up and down in the spacing scope in displacement detector housing, the moving grid pole of linear pattern capacitive displacement transducer
Plate is fixed on hollow force transmission shaft surface, and fixed grid pole plate is fixed on displacement detector inner walls, fixed grid pole plate and moving grid pole plate phase
Correspondence, displacement detector, which sets to provide to hollow force transmission shaft, gives the flexible member of pressure, hollow transmission rod connection combination with it is hollow
Force transmission shaft upper end is connected, and hollow force transmission shaft lower end is connected with load pressure detector, and screw pressure-bearing plate is examined with load pressure
Survey device bottom socket connection, linear pattern capacitive displacement transducer moving grid plate signal cable and load pressure detector signal cable
Turn into resultant signal cable after collecting and ground is led to by hollow force transmission shaft and hollow transmission rod；Sleeve rotating is passed through by rig
Enter, the sleeve rotating injection amount of one week is equal to the pitch of screw pressure-bearing plate, stop when screw pressure-bearing plate reaches to give setting after subterranean depth
It is spin-ended to turn injection, rig is removed, setting is supported in ground and by the datum line beam with casing spider of earth anchorage, casing spider
Second section sleeve pipe is fastened, first segment sleeve pipe is removed, the reaction frame of the hollow transmission rod connection combination of correspondence is set, by resultant signal line
Cable is connected to measurement data record instrument；The hydraulic jack connected by reaction frame and hollow transmission rod between combining is passed to hollow
Power bar is by the relative stabilization method of sedimentation or waits the code requirement stage loading of sedimentation rate method until off-test；If in the test hole
Position carries out the experiment of next experiment depth, dismounting reaction frame crossbeam and hydraulic jack, and resultant signal cable and measurement data are remembered
Instrument separation is recorded, first segment sleeve pipe is connected on the second section sleeve pipe that casing spider is fastened, casing spider is unclamped, set is made by rig
Pipe connection combination rotation injection simultaneously increases hollow transmission rod and sleeve pipe section by section, while by resultant signal cable from increased hollow power transmission
Bar is drawn, and is set injection of being stopped the rotation after subterranean depth when screw pressure-bearing plate reaches next give, is repeated process same as before and tried
Test until the experiment that the experiment hole position respectively tests depth all terminates；Sleeve pipe connection group is pulled out by rig or oil jack jack-up
Close, hollow transmission rod connection combination, displacement detector and load pressure detector are also risen and pulled out therewith, and screw pressure-bearing plate is abandoned in examination
Verify position.
The displacement detector for the above method of the present invention：The displacement detector is provided with to be connect by casing joint, transmission
Head and end socket are from top to bottom threadedly coupled the housing of composition successively, and casing joint is provided with the external screw thread of screw joint casing, housing
In the hollow force transmission shaft provided with the insertion housing, hollow force transmission shaft is slidably engaged with casing joint and end socket, hollow force transmission shaft with
Spline is connected between drive joint, and hollow force transmission shaft has the protuberance that external splines is constituted, and casing joint lower end is passed provided with hollow
Power axle upper limit boss, the upper limit boss is engaged with moving up the upper surface of hollow force transmission shaft protuberance, and end socket is provided with hollow
Force transmission shaft lower limit boss, the lower limit boss is engaged with moving down the lower surface of hollow force transmission shaft protuberance, hollow force transmission shaft
Stage clip is socketed with, stage clip bottom is supported in the upper surface of hollow force transmission shaft protuberance, stage clip upper end and the concave station phase of casing joint
Engagement, hollow force transmission shaft upper end is provided with the nipple being connected with hollow transmission rod, and hollow force transmission shaft lower end is provided with and load pressure
The nipple of force detector threaded connection, the both sides of the correspondence position of spline connection one between hollow force transmission shaft and drive joint
It is respectively equipped with and is provided with interval, linear pattern capacitive grating displacement sensing between the platform for axial direction, both sides platform relative to hollow force transmission shaft
The moving grid pole plate of device is fixed on hollow force transmission shaft protuberance side platform, fixed grid pole plate be fixed on drive joint side platform,
Hollow force transmission shaft protuberance side platform is communicated with the via of hollow force transmission shaft axle center hole, via being provided with moving grid plate signal
Cable, the cable is connected to the circuit board being fixed in hollow force transmission shaft axle center hole, the signal output cable and load of circuit board
Pressure detector signal cable is connected to the cable receptacles of hollow force transmission shaft upper end, the casing joint being threadedly coupled successively,
Each joint portion between drive joint, end socket is respectively equipped with sealing ring, hollow force transmission shaft and corresponding casing joint and end socket
Between be respectively equipped with sealing ring, hollow force transmission shaft upper end is provided with the sealing ring for being engaged in hollow power transmission rod port.
The displacement detector of the present invention can also take following technical measures：
Described sleeve pipe upper end of joint and end socket lower end are provided with the dust ring for being engaged in hollow force transmission shaft.
The hollow transmission rod and sleeve pipe are geological prospecting feeler lever and sleeve pipe.
The nipple that the hollow force transmission shaft upper end connects hollow transmission rod is stud, and hollow force transmission shaft lower end connection is carried
The nipple of lotus pressure detector is swivel nut.
Advantages and advantages of the invention are：
The displacement detector for detecting screw pressure-bearing plate sinking displacement amount is arranged at the i.e. hollow transmission rod in underground and connected by the present invention
The problem of connecing the lowermost end of combination, therefore transmission rod Bending Influence screw plate loading test accuracy can be excluded completely.This hair
It is bright that the dynamic of linear pattern capacitive displacement transducer, fixed grid pole plate are separately positioned on hollow force transmission shaft and drive joint, displacement detecting
The dynamic of linear pattern capacitive displacement transducer, fixed grid pole plate are separately positioned on a corresponding position of hollow force transmission shaft and drive joint by device
Put, the housing including drive joint of displacement detector is fixed with sleeve pipe during experiment, hollow force transmission shaft is with hollow transmission rod loading
It is mobile, therefore, it is possible to the sinking displacement amount of accurate measurement screw pressure-bearing plate.Between the hollow force transmission shaft and drive joint of the present invention
Spline is connected, it is possible to achieve sleeve rotating injection drives hollow transmission rod synchronous rotary injection, and can ensure that linear pattern is held
The dynamic of displacement transducer, fixed grid pole plate correspondence position relation are constant.The rotary presser device that the present invention acts on sleeve pipe is used
Rig, the loading system of hollow transmission rod uses hydraulic jack, with the characteristics of operating method is ripe, adaptability is extensive.
Brief description of the drawings
Accompanying drawing 1 is to apply the inventive method embodiment schematic diagram.
Accompanying drawing 2 is displacement detector, load pressure detector and screw pressure-bearing plate connection diagram.
Accompanying drawing 3 is displacement detector structural profile enlarged diagram in Fig. 2.
Accompanying drawing 4 is Fig. 3 A-A section zoomed-in views.
Marked in figure：1 hollow transmission rod connection combination, the combination of 2 sleeve pipe connections, 3 reaction frames, 3-1 reaction frame crossbeams, 4 bases
Quasi- beam, 4-1 casing spiders, 5 hydraulic jacks, 6 casing joints, 6-1 upper limit boss, 6-2 concave stations, 7 drive joints, 8 end sockets,
9 hollow force transmission shafts, 9-1 studs, 9-2 swivel nuts, 9-3 vias, 10 load pressure detectors, 11 screw pressure-bearing plates, 12 resultant signal lines
Cable, 13 signal output sockets, 14 fixed grid pole plates, 14-1 backing plates, 15 moving grid pole plates, 16 circuit boards, 17 dust rings, 18 sealing rings,
19 stage clips.
Embodiment
The present invention is further illustrated with reference to embodiment and its accompanying drawing.
As shown in Figure 1,2,3, 4, the bottom for combining 2 in sleeve pipe connection connects the displacement detector of synchronous rotation, position
Moving detector, from top to bottom threaded connection constitutes housing successively by casing joint 6, drive joint 7 and end socket 8, and sleeve pipe connects with sleeve pipe
First 6 threaded connection.Hollow force transmission shaft 9 provided with the insertion housing in the housing of displacement detector, hollow force transmission shaft 9 connects with sleeve pipe
First 6 and end socket 8 be slidably engaged, between hollow force transmission shaft 9 and drive joint 7 for spline connect, make hollow force transmission shaft 9 by displacement
The housing of detector and sleeve pipe synchronous rotary.Hollow force transmission shaft 9 has the protuberance that external splines is constituted, and the lower end of casing joint 6 is set
There is a upper limit boss 6-1 of hollow force transmission shaft 9, the upper end of the protuberance of hollow force transmission shaft 9 of the upper limit boss and raised state
Face is engaged, and end socket 8 is provided with the lower limit boss of hollow force transmission shaft, and the lower limit boss is with moving down hollow force transmission shaft protuberance
Lower surface is engaged, and upper and lower positive stop lug boss is engaged with the hollow protuberance of force transmission shaft 9 makes hollow force transmission shaft in displacement detector shell
Moved up and down in spacing scope in body.
The hollow upper end of force transmission shaft 9 is provided with the nipple i.e. stud 9-1 for being connected with hollow transmission rod and combining 1 connection, hollow
The lower end of force transmission shaft 9 is provided with the lower nipple i.e. swivel nut 9-2 being threadedly coupled with load pressure detector 10, load pressure detector
10 bottom is provided with the screw pressure-bearing plate 11 engaged with its grafting.
The both sides of a correspondence position of spline connection are respectively equipped with relatively between hollow force transmission shaft 9 and drive joint 7
Provided with interval, the moving grid pole plate of linear pattern capacitive displacement transducer between platform of the hollow force transmission shaft for axial direction, both sides platform
15 are fixed on hollow force transmission shaft protuberance side platform, and fixed grid pole plate 14 is fixed on drive joint side platform, and the platform passes through
Backing plate 14-1 shown in Fig. 4 is constituted.The hollow protuberance side platform of force transmission shaft 9 is communicated with the mistake of the hollow axle center hole of force transmission shaft 9
The signal cable of moving grid pole plate 15 is provided with hole 9-3, via 9-3, the cable, which is connected to, to be fixed in hollow force transmission shaft axle center hole
Circuit board 16, the signal output cable of circuit board 16 is connected to the signal output socket 13 for being fixed on the hollow upper end of force transmission shaft 9.
Meanwhile, the signal cable of load pressure detector 10 is also connected to the signal output socket of hollow force transmission shaft upper end
13, plug and the socket connection of signal output socket 13 of resultant signal cable 12, its resultant signal cable 12 are connected from hollow transmission rod
Ground is led in combination 1, measurement data record instrument is connected to during experiment.
Hollow force transmission shaft 9 is socketed with the flexible member i.e. stage clip 19 for absorbing vibration and impact energy, and stage clip bottom is supported in
The upper surface of hollow force transmission shaft protuberance, stage clip upper end is engaged with the concave station 6-2 of casing joint 6.
As shown in figure 3, the joint portion between casing joint 6, drive joint 7 and end socket 8 is provided with sealing ring 18, hollow power transmission
Also distinguish between bar connection combination 1 and hollow force transmission shaft 9, between hollow force transmission shaft 9 and corresponding casing joint 6 and end socket 8
Provided with sealing ring 18.
The upper end of casing joint 6 and the lower end of end socket 8 are provided with the dust ring 17 for being engaged in hollow force transmission shaft 9.
Hollow transmission rod connection combination 1 and sleeve pipe connection combination 2 described in embodiment are geological prospecting feeler lever and sleeve pipe.
Load pressure detector 10 involved in the present invention is existing product.
The present invention is rig to sleeve pipe connection combination rotary presser device, and the loading of combination is connected for hollow transmission rod
Device is hydraulic jack.
Illustrate the operating procedure of the present invention below in conjunction with Fig. 1 and by taking rig as an example：
1. stop to bore at 1 meter of hole depth away from testing by drill hole of drilling machine in setting hole position；
2. screw pressure-bearing plate 11, load pressure probe 10, displacement detecting probe and hollow transmission rod are sequentially connected, will be total
Signal cable 12 is drawn from hollow transmission rod；
3. in hollow transmission rod outer sheath tubing, the casing joint 6 of the sleeve pipe and displacement detector is connected, by the sleeve pipe
It is connected to rig；
4. starting rig by sleeve rotating penetration test hole position, the sleeve rotating injection amount of one week is equal to screw pressure-bearing plate 11
Pitch.Then increase hollow transmission rod section by section and sleeve pipe is allowed to respectively become hollow transmission rod connection combination 1 and sleeve pipe connection
Combination 2, and resultant signal cable 12 is drawn from each increased hollow transmission rod；
5. stopping to bore when screw pressure-bearing plate 11 reaches set depth, rig is removed, setting is supported in ground and anchored by ground
The fixed datum line beam 4 with casing spider 4-1, casing spider 4-1 fastens second section sleeve pipe, removes first segment sleeve pipe, sets
The reaction frame 3 of the hollow transmission rod connection combination of correspondence, measurement data record instrument is connected to by resultant signal cable；
6. the hydraulic jack 5 combined between 1 is connected by reaction frame 3 and hollow transmission rod presses sedimentation to hollow transmission rod
With respect to stabilization method or the code requirement stage loading of sedimentation rate method is waited until off-test；
If 7. carrying out the experiment of next experiment depth, dismounting reaction frame crossbeam 3-1 and hydraulic jack in the experiment hole position
5, resultant signal cable 12 is separated with measurement data record instrument, first is connected on the second section sleeve pipe that casing spider 4-1 is fastened
Sleeve pipe is saved, casing spider 4-1 is unclamped, sleeve pipe connection combination rotation injection is made by rig and increases hollow transmission rod and set section by section
Pipe, while resultant signal cable 12 is drawn from increased hollow transmission rod, underground depth is set when screw pressure-bearing plate 11 reaches next give
Stopped the rotation after degree injection, repeat abovementioned steps 5,6 processes and carry out experiment until the experiment hole position experiment of respectively testing depth is complete
Terminate in portion；
8. pull out sleeve pipe connection by rig or oil jack jack-up to combine, hollow transmission rod connection combination, displacement detector
Rise and pull out therewith with load pressure detector, screw pressure-bearing plate 11 is abandoned in experiment hole position.
Claims (5)
1. exclude the method for transmission rod Bending Influence screw plate loading test accuracy, it is characterised in that：Sleeve pipe connection combination
Bottom connects the hollow power transmission that synchronous rotation is set in the displacement detector of synchronous rotation, displacement detector housing
Axle, hollow force transmission shaft is moved up and down in the spacing scope in displacement detector housing, linear pattern capacitive displacement transducer it is dynamic
Grid board is fixed on hollow force transmission shaft surface, and fixed grid pole plate is fixed on displacement detector inner walls, fixed grid pole plate and moving grid pole
Plate is corresponding, and displacement detector, which sets to provide to hollow force transmission shaft, gives the flexible member of pressure, hollow transmission rod connection combination with
Hollow force transmission shaft upper end is connected, and hollow force transmission shaft lower end is connected with load pressure detector, screw pressure-bearing plate and load pressure
The socket connection of force detector bottom, linear pattern capacitive displacement transducer moving grid plate signal cable and load pressure detector signal
Cable turns into resultant signal cable and leads to ground by hollow force transmission shaft and hollow transmission rod after collecting；Sleeve pipe is revolved by rig
Turn injection, the sleeve rotating injection amount of one week is equal to the pitch of screw pressure-bearing plate, subterranean depth is set when screw pressure-bearing plate reaches to give
After stop the rotation injection, remove rig, setting is supported in ground and by the datum line beam with casing spider of earth anchorage, sleeve pipe
Chuck fastens second section sleeve pipe, removes first segment sleeve pipe, sets the reaction frame of the hollow transmission rod connection combination of correspondence, will always believe
Number cable is connected to measurement data record instrument；Hydraulic jack between being combined by reaction frame and the connection of hollow transmission rod is to sky
Heart transmission rod is by the relative stabilization method of sedimentation or waits the code requirement stage loading of sedimentation rate method until off-test；If in the examination
The experiment for the next experiment depth of position progress of verifying, dismounting reaction frame crossbeam and hydraulic jack, by resultant signal cable and measurement number
Separated according to recorder, first segment sleeve pipe is connected on the second section sleeve pipe that casing spider is fastened, unclamped casing spider, pass through rig
Make sleeve pipe connection combination rotation injection and increase hollow transmission rod and sleeve pipe section by section, while by resultant signal cable from increased hollow
Transmission rod is drawn, and is set injection of being stopped the rotation after subterranean depth when screw pressure-bearing plate reaches next give, is repeated process same as before and enter
Row experiment is until the experiment that the experiment hole position respectively tests depth all terminates；Sleeve pipe connection is pulled out by rig or oil jack jack-up
Combination, hollow transmission rod connection combination, displacement detector and load pressure detector also rise and pulled out therewith, screw pressure-bearing plate abandon in
Test hole position.
2. the displacement detector of method according to claim 1, it is characterised in that：The displacement detector is provided with and connect by sleeve pipe
Head, drive joint and end socket are from top to bottom threadedly coupled the housing of composition successively, and casing joint is outer provided with screw joint casing
Hollow force transmission shaft provided with the insertion housing in screw thread, housing, hollow force transmission shaft is slidably engaged with casing joint and end socket, hollow
Spline is connected between force transmission shaft and drive joint, and hollow force transmission shaft has the protuberance that external splines is constituted, and casing joint lower end is set
There is hollow force transmission shaft upper limit boss, the upper limit boss is engaged with moving up the upper surface of hollow force transmission shaft protuberance, end socket
Provided with hollow force transmission shaft lower limit boss, the lower limit boss is engaged with moving down the lower surface of hollow force transmission shaft protuberance, empty
Heart force transmission shaft is socketed with stage clip, and stage clip bottom is supported in the upper surface of hollow force transmission shaft protuberance, stage clip upper end and casing joint
Concave station engage, hollow force transmission shaft upper end is provided with the nipple that is connected with hollow transmission rod, and hollow force transmission shaft lower end is provided with
The nipple being threadedly coupled with load pressure detector, the corresponding position of spline connection one between hollow force transmission shaft and drive joint
The both sides put are respectively equipped with is provided with interval, linear pattern capacitive grating relative to hollow force transmission shaft between the platform for axial direction, both sides platform
The moving grid pole plate of displacement transducer is fixed on hollow force transmission shaft protuberance side platform, and fixed grid pole plate is fixed on and drive joint one
Side platform, hollow force transmission shaft protuberance side platform is communicated with the via of hollow force transmission shaft axle center hole, via being provided with moving grid
Plate signal cable, the cable is connected to the circuit board being fixed in hollow force transmission shaft axle center hole, the output line of circuit board
Cable and load pressure detector signal cable are connected to the cable receptacles of hollow force transmission shaft upper end, the set being threadedly coupled successively
Each joint portion between pipe joint, drive joint, end socket is respectively equipped with sealing ring, hollow force transmission shaft and corresponding casing joint
Sealing ring is respectively equipped between end socket, hollow force transmission shaft upper end is provided with the sealing ring for being engaged in hollow power transmission rod port.
3. displacement detector according to claim 2, it is characterised in that：Described sleeve pipe upper end of joint and end socket lower end are provided with
It is engaged in the dust ring of hollow force transmission shaft.
4. displacement detector according to claim 2, it is characterised in that：The hollow transmission rod and sleeve pipe are geological prospectings
Feeler lever and sleeve pipe.
5. displacement detector according to claim 2, it is characterised in that：The hollow force transmission shaft upper end connects hollow power transmission
The nipple of bar is stud, and the nipple of hollow force transmission shaft lower end connection load pressure detector is swivel nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610061487.3A CN105507226B (en) | 2016-01-28 | 2016-01-28 | Exclude the method and its displacement detector of transmission rod Bending Influence screw plate loading test accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610061487.3A CN105507226B (en) | 2016-01-28 | 2016-01-28 | Exclude the method and its displacement detector of transmission rod Bending Influence screw plate loading test accuracy |
Publications (2)
| Publication Number | Publication Date |
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| CN105507226A CN105507226A (en) | 2016-04-20 |
| CN105507226B true CN105507226B (en) | 2017-07-28 |
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| CN201610061487.3A Active CN105507226B (en) | 2016-01-28 | 2016-01-28 | Exclude the method and its displacement detector of transmission rod Bending Influence screw plate loading test accuracy |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375395B (en) * | 2018-03-22 | 2024-04-19 | 中国铁路设计集团有限公司 | Underground acquisition assembly for force and speed signals in standard penetration test |
| CN110700787B (en) * | 2018-07-10 | 2021-05-28 | 中国石油化工股份有限公司 | Wellhead torque slow-release back-off protection device and method and special torsion-proof rod |
| CN109440753B (en) * | 2018-12-04 | 2023-11-21 | 中国海洋大学 | Spiral plate load testing device capable of eliminating bending influence of dowel bar |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007255012A (en) * | 2006-03-22 | 2007-10-04 | Giotech Gijutsushi Jimusho:Kk | Vane shear testing device of ground in situ |
| JP5168696B2 (en) * | 2009-02-19 | 2013-03-21 | 五洋建設株式会社 | Portable cone penetration test equipment |
| CN202323914U (en) * | 2011-11-08 | 2012-07-11 | 中交天航港湾建设工程有限公司 | Center fixed type sedimentation plate |
| CN202595720U (en) * | 2012-06-08 | 2012-12-12 | 深圳市勘察测绘院有限公司 | Spiral board load testing equipment |
| CN103195042B (en) * | 2013-03-15 | 2015-09-16 | 安徽省交通控股集团有限公司 | A kind of can deep layer load screw plate test devices and methods therefor |
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Effective date of registration: 20190419 Address after: No. 88 Manjiang Road, Yueyahe Street, Hebei District, Tianjin 300251 Patentee after: TieSanyuan (Tianjin) Engineering Co., Ltd. Address before: No. 10 Minjiang Road, Minquan, Hebei District, Tianjin Patentee before: China Railway Third Survey and Design Institute Group Ltd. |