CN207991973U - Rock sample torsional fracture breaking test device - Google Patents
Rock sample torsional fracture breaking test device Download PDFInfo
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- CN207991973U CN207991973U CN201820365343.1U CN201820365343U CN207991973U CN 207991973 U CN207991973 U CN 207991973U CN 201820365343 U CN201820365343 U CN 201820365343U CN 207991973 U CN207991973 U CN 207991973U
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Abstract
The utility model discloses a kind of rock sample torsional fracture breaking test devices, it includes that main hydraulic cylinder group and dual-rod hydraulic cylinder group are separately installed on mainframe upper beam and bottom end rail, and the main piston rod of main hydraulic cylinder group passes through the end set of upper beam to have a load sensor；It is provided with rotation-preventing mechanism at the lower surface face main piston rod of upper beam；Sample upper holder block is provided on rotation-preventing mechanism；Auxiliary piston bar one end of dual-rod hydraulic cylinder group passes through bottom end rail and installs sample lower lock block on it, and the groove with the groove cooperation on sample upper holder block is offered on sample lower lock block；The auxiliary piston bar other end is pierced by subsidiary cylinder and installs upper bearing (metal) on it；The side of bottom end rail is provided with power take-off mechanism, power take-off mechanism by transmission mechanism with connect axis connection；Torque sensor is installed, the end that the torque sensor other end is provided with bearing with auxiliary piston bar is fixedly connected in connecting shaft.
Description
Technical field
The utility model is related to material properties of rock test devices, and in particular to a kind of rock sample torsional fracture breaking test dress
It sets.
Background technology
As underground mining is persistently deep into underground deep, rock rupture problem is more and more complicated.In addition to typical rock burst,
Bump, high hydraulic pressure may cause other than rock rupture, and failure mode also levels off to complication.The destruction of rock torsional fracture is a kind of
The Antiplane Shear that three received strength is formed is destroyed, and the essential reason of the rock failure mechanism of rock is the germinating of internal microfissure, extension, and is split
It is mutually communicated between gap, eventually forms the process in Macroscopic face, force way, the failure mode of rock are complex.
At present in this field still without targetedly equipment, it means that can not really experimental rock torsional fracture destroy, this
Nothing brings the difficulty that can not be overcome suspected of the corresponding research for carrying out the problem.In order to adapt to the demand of mining activity development, into
One step widens the scope of Rock fracture experiment research.It is necessary to pointedly research and develop a testing equipment, it is broken to reproduce rock torsional fracture
Bad overall process, the research to carry out the field provide experiment basis.
Utility model content
For above-mentioned deficiency in the prior art, the utility model provides one kind can apply axial pressure to rock sample
The rock sample torsional fracture breaking test device of power and torque.
In order to reach above-mentioned purpose of utility model, the technical solution adopted in the utility model is：
A kind of rock sample torsional fracture breaking test device is provided comprising mainframe, on mainframe upper beam and bottom end rail
It is separately installed with for applying stressed main hydraulic cylinder group and dual-rod hydraulic cylinder group, the main piston of main hydraulic cylinder group to rock sample
Bar passes through the end set of upper beam to have a load sensor；It is arranged at the lower surface face main piston rod of upper beam restricted negative
The rotation-preventing mechanism of lotus sensor and main piston rod rotation；
Be provided on rotation-preventing mechanism has the sample upper holder block of the groove coordinated with rock sample thereon；Dual-rod hydraulic cylinder group
Auxiliary piston bar one end pass through and bottom end rail and install sample lower lock block on it, offered on sample lower lock block on sample
Groove of the groove cooperation for clamping rock sample on briquetting；The auxiliary piston bar other end is pierced by subsidiary cylinder and installs on it
Upper bearing (metal)；
The side of bottom end rail is provided with the power take-off mechanism for applying torque to rock sample, and power take-off mechanism passes through biography
Motivation structure with connect axis connection；Torque sensor is installed, the torque sensor other end is provided with auxiliary piston bar in connecting shaft
The end of bearing is fixedly connected；Torque sensor, load sensor, main hydraulic cylinder group, dual-rod hydraulic cylinder group and output machine
Structure is connect with control module.
Preferably, rotation-preventing mechanism includes anti-rotation fixing sleeve and the anti-rotation pressing plate being fixedly connected with load sensor, and anti-rotation is solid
The fixed main hydraulic cylinder group that is set in is fixed on the main piston rod of upper beam and with locking member on upper beam；Anti-rotation is fixed
It puts on and is provided with anti-rotation column, be provided on anti-rotation pressing plate with anti-rotation column cooperation, for limiting anti-rotation press plate rotary
Limit hole；Sample upper holder block is installed on the lower surface of anti-rotation pressing plate.
Preferably, power take-off mechanism includes the servo motor and planetary reducer being connected with each other, servo motor and planet
Speed reducer is each attached on the mounting bracket being fixedly connected with bottom end rail, and servo motor is connect with control module.
Preferably, transmission mechanism includes the belt pulley being installed on planetary reduction gear power output shaft and is fixed on connecting shaft
On synchronizing wheel, synchronizing wheel connected with belt pulley by transmission belt.
Preferably, the diameter of synchronizing wheel is more than the diameter of belt pulley.
Preferably, main hydraulic cylinder group includes Master cylinder body, the servo valve being connect with hydraulic station and is set in Master cylinder body and two
The main piston rod of Master cylinder body is extended at end, and Master cylinder body is divided into upper cylinder and lower oil cylinder, servo by the piston in the middle part of main piston rod
Valve is fixed on across balanced valve on the valve seat being arranged on Master cylinder body；
Four oilholes of servo valve by oil pipe respectively on the upper cylinder of main hydraulic cylinder group and lower oil cylinder fuel feed hole, go out
Oilhole is connected to；The at one end that load sensor is not arranged for main piston rod is provided with the photoelectric coding for acquiring main piston rod displacement
Device；Photoelectric encoder, servo valve and balanced valve are connect with control module.
Preferably, dual-rod hydraulic cylinder group include subsidiary cylinder, the solenoid valve being connect with hydraulic station and be set in subsidiary cylinder and
The auxiliary piston bar of subsidiary cylinder is extended at both ends, and subsidiary cylinder is divided into upper cylinder and lower oil cylinder by the piston in the middle part of auxiliary piston bar；It is double
Fuel feed hole, the oil outlet of the upper cylinder of bar hydraulic cylinder group and lower oil cylinder are connect by oil pipe and solenoid valve with hydraulic station；Solenoid valve
It is connect with control module.
Preferably, the friction coefficient for the sealing ring contacted with subsidiary cylinder being arranged on the piston of auxiliary piston bar is less than 0.11.
The beneficial effects of the utility model are：The device provided by this programme can apply to rock sample axial simultaneously
Pressure and torque, rock occurs under the conditions of capable of studying different spinning rates, different direct stress, different lithology, different sizes etc.
Torque failure characteristic is truly realized the destruction of rock Antiplane Shear, with the actual similarity higher of engineering.
For the utility model directly by rock sample clamping between sample upper holder block and sample lower lock block, starter can
To realize simulated experiment, the data acquisition of acquisition is true and reliable, and data volume is abundant, and test accuracy is high, can monitor in real time, and adopt
Monitoring device is mostly the contactless influence for being not easy to be damaged.The utility model has and engineering similarity is high, is applicable in model
Enclose the features such as wide, reliability is high, gathered data is abundant and experimental precision is high.
In addition, the present apparatus can also directly with the existing non-contact type strain measurement system in laboratory, acoustic emission monitor(ing) system
The real-time monitoring of the deformation field, Acoustic Field and visible light field of rock is realized in system and the cooperation of high-speed figure type video camera.
Description of the drawings
Fig. 1 is the structural schematic diagram of rock sample torsional fracture breaking test device.
Fig. 2 is the sectional view of rock sample torsional fracture breaking test device.
Fig. 3 is the vertical view of main hydraulic cylinder group.
Fig. 4 is the structural schematic diagram of mainframe.
Fig. 5 is the stereogram of rock sample.
Wherein, 1, main hydraulic cylinder group；11, photoelectric encoder；12, upper end cover；13, columnar cylinder body；14, main piston rod；16、
Bottom end cover；17, servo valve；18, valve seat；19, balanced valve；2, mainframe；21, upper beam；22, support column；23, bottom end rail；3、
Rotation-preventing mechanism；31, anti-rotation fixing sleeve；32, anti-rotation column；33, anti-rotation pressing plate；34, sample upper holder block；4, load sensor；5、
Rock sample；6, dual-rod hydraulic cylinder group；61, sample lower lock block；62, auxiliary piston cylinder；7, power take-off mechanism；71, servo motor；
72, motor mounting rack；73, planetary reducer；74, main link；8, transmission mechanism；81, transmission belt；82, belt pulley；83、
Synchronizing wheel；84, connecting shaft；9, torque sensor；10, bearing.
Specific implementation mode
Specific embodiment of the present utility model is described below, in order to facilitate understanding by those skilled in the art
The utility model, it should be apparent that the utility model is not limited to the range of specific implementation mode, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the utility model spirit and scope in,
These variations are it will be apparent that all are created using the utility model of the utility model design in the row of protection.
The structural schematic diagram of 5 torsional fracture breaking test device of rock sample is shown with reference to figure 1 and Fig. 2, Fig. 1；Fig. 2 shows
The sectional view of 5 torsional fracture breaking test device of rock sample；As depicted in figs. 1 and 2, the 5 torsional fracture breaking test device of rock sample
Upper beam 21 and bottom end rail 23 including mainframe 2, control module (preferably control module selects edc controllers) and mainframe 2
On be separately installed with for applying stressed main hydraulic cylinder group 1 and dual-rod hydraulic cylinder group 6 to rock sample 5.
Such as Fig. 1 to Fig. 3, in one embodiment of the utility model, main hydraulic cylinder group 1 includes Master cylinder body and hydraulic station
The servo valve 17 of connection and it is set to the main piston rod 14 that Master cylinder body is extended in Master cylinder body and both ends, 14 middle part of main piston rod
Piston be divided into upper cylinder and lower oil cylinder, servo valve 17 to be fixed on the valve being arranged on Master cylinder body across balanced valve 19 Master cylinder body
On seat 18.
Four oilholes of servo valve 17 by oil pipe respectively with the oil inlet on the upper cylinder of main hydraulic cylinder group 1 and lower oil cylinder
Hole, oil outlet connection；The at one end that load sensor 4 is not arranged for main piston rod 14 is provided with acquisition 14 displacement of main piston rod
Photoelectric encoder 11；Photoelectric encoder 11, servo valve 17 and balanced valve 19 are connect with control module.
As shown in Fig. 2, wherein Master cylinder body includes columnar cylinder body 13 and the upper end cover being fixed in columnar cylinder body 13 12 under
End cap 16, the both ends of main piston rod 14 are each passed through the both ends of upper end cover 12 and bottom end cover 16, in order to ensure columnar cylinder body 13, on
Stability between the Master cylinder body that end cap 12 and bottom end cover 16 form, passes through several locking screws between upper end cover 12 and bottom end cover 16
Bolt is fixedly connected.
As shown in figure 4, mainframe 2 includes upper beam 21, bottom end rail 23 and the support for connecting upper beam 21 and bottom end rail 23
Column 22, since 2 upper end of mainframe needs to install main hydraulic cylinder group 1, lower end needs to install dual-rod hydraulic cylinder group 6, stability pair
Being smoothed out for experiment is particularly important, is pacified respectively by several fixing bolts to the preferred upper beam of this this programme 21, bottom end rail 23
Mounted in the upper and lower ends of support column 22.
Referring again to Fig. 1 and Fig. 2, it is one negative that the main piston rod 14 of main hydraulic cylinder group 1 passes through the end set of upper beam 21 to have
Lotus sensor 4；Restricted load sensor 4 is set at the lower surface face main piston rod 14 of upper beam 21 and main piston rod 14 revolves
The rotation-preventing mechanism 3 turned；Be provided on rotation-preventing mechanism 3 has the sample upper holder block 34 of the groove coordinated with rock sample 5 thereon.
As shown in Figure 1, in one embodiment of the utility model, rotation-preventing mechanism 3 include anti-rotation fixing sleeve 31 and with it is negative
The anti-rotation pressing plate 33 that lotus sensor 4 is fixedly connected, anti-rotation fixing sleeve 31 are set in the main work that main hydraulic cylinder group 1 passes through upper beam 21
It is fixed on upper beam 21 on stopper rod 14 and with fixing bolt；Anti-rotation column 32, anti-rotation pressing plate are provided on anti-rotation fixing sleeve 31
It is provided on 33 and the cooperation of anti-rotation column 32, the limit hole for limiting the rotation of anti-rotation pressing plate 33；Sample upper holder block 34 is installed on
The lower surface of anti-rotation pressing plate 33.
Due to unlocked between limit hole and anti-rotation column 32, the main piston rod 14 of main hydraulic cylinder group 1 is passed in band dynamic load
When sensor 4 moves downward, anti-rotation column 32 is made to be moved down into limit hole, due to diameter and the anti-rotation column 32 of limit hole
Diameter matches the diameter of anti-rotation column 32 (be slightly larger than), can to avoid rock sample 5 when being rotated by torsion band dynamic load
Sensor 4 and main piston rod 14 rotate.
62 one end of auxiliary piston bar of dual-rod hydraulic cylinder group 6 passes through bottom end rail 23 and installs sample lower lock block 61 on it,
It is offered on sample lower lock block 61 and groove of the groove cooperation for clamping rock sample 5 on sample upper holder block 34；Auxiliary piston
62 other end of bar is pierced by subsidiary cylinder and installs upper bearing (metal) 10 on it.Can preferably bearing 10 be centripetal circular cone ball when implementation
Bearing.
As depicted in figs. 1 and 2, in one embodiment of the utility model, dual-rod hydraulic cylinder group 6 include subsidiary cylinder, with
The solenoid valve of hydraulic station connection and it is set to the auxiliary piston bar 62 that subsidiary cylinder is extended in subsidiary cylinder and both ends, auxiliary piston bar 62
Subsidiary cylinder is divided into upper cylinder and lower oil cylinder by the piston at middle part；The fuel feed hole of the upper cylinder of dual-rod hydraulic cylinder group 6 and lower oil cylinder,
Oil outlet is connect by oil pipe and solenoid valve with hydraulic station；Solenoid valve is connect with control module.
Since the dual-rod hydraulic cylinder group 6 and main hydraulic cylinder group 1 of this programme are in addition to solenoid valve, balanced valve 19,17 and of servo valve
Photoelectric encoder 11 is not both other mechanical structures all same outside the component both needed, is not just being carried individually herein
It is described for the attached drawing of dual-rod hydraulic cylinder group 6.
When implementation, the friction system for the sealing ring contacted with subsidiary cylinder being arranged on the piston of the preferred auxiliary piston bar of this programme 62
Number is less than 0.11.It is smaller to rub since auxiliary piston bar 62 can rotate under the action of torque and then rock sample 5 is driven to rotate
The sealing ring for wiping coefficient uses, and can reduce auxiliary piston bar 62 and overcome the work(done needed for frictional force, can reduce torque biography in this way
The energy loss for passing process, to ensure that the precision of stress field that experiment process obtains.
As depicted in figs. 1 and 2, the side of bottom end rail 23 is provided with the power take-off mechanism for applying torque to rock sample 5
7, power take-off mechanism 7 is connect by transmission mechanism 8 with connecting shaft 84；Torque sensor 9 is installed, torque passes in connecting shaft 84
The end that 9 other end of sensor is provided with bearing 10 with auxiliary piston bar 62 is fixedly connected；Torque sensor 9, load sensor 4, master
Hydraulic cylinder group 1, dual-rod hydraulic cylinder group 6 and power take-off mechanism 7 are connect with control module.
As shown in Figure 1, wherein power take-off mechanism 7 includes the servo motor 71 being connected with each other and planetary reducer 73, watch
It takes motor 71 and planetary reducer 73 is each attached on the mounting bracket being fixedly connected with bottom end rail 23, servo motor 71 and control mould
Block connects.
With reference to figure 1, mounting bracket includes the main link 74 being fixedly connected with bottom end rail 23 and fixes company with main link 74
The motor mounting rack 72 connect, motor mounting rack 72 are fixedly connected with the lower end of main link 74, and servo motor 71 is mounted on motor
The upper surface of mounting bracket 72, planetary reducer 73 are mounted on the lower surface of motor mounting rack 72.
When implementation, the preferred transmission mechanism 8 of this programme includes the belt pulley being installed on 73 power output shaft of planetary reducer
82 and the synchronizing wheel 83 that is fixed in connecting shaft 84, synchronizing wheel 83 and belt pulley 82 are connected by transmission belt 81.
Wherein, transmission mechanism 8 can also use similar gear and transmit the fit structure of rack, such as transmission mechanism 8
Including the first gear that is installed on the power output shaft of planetary reducer 73 and the second gear being fixed in connecting shaft 84, the
One gear is connected with second gear by transmitting rack.
But transmission mechanism 8 either uses belt transport or gear transmission, is fixedly mounted on the same of connecting shaft 84
Step wheel 83 or the diameter of second gear are required for the belt pulley 82 or the first being far longer than on 73 power output shaft of planetary reducer
The diameter of gear, after being arranged in this way, it is ensured that belt pulley 82 or first gear rotation are turned around, and synchronizing wheel 83 or second gear are only
By the angle of a very little, it disposably can rotate through wide-angle to avoid synchronizing wheel 83 or second gear in this way and damage rock
Sample 5, and the simulation of final rock stress field is not achieved.
So far the detailed description of 5 torsional fracture breaking test device of rock sample is completed, below then to 5 torsional fracture of rock sample
5 torsional fracture destruction methods of breaking test unit simulation rock sample illustrate：
5 torsional fracture breaking test unit simulation rock sample of rock sample, the 5 torsional fracture destruction methods include step 101 to step
106。
In a step 101, the rock mass of engineering site is chosen, and be prepared into interlude there is the bar shaped rock of recessed groove
The structure of sample 5, rock sample 5 can be with reference chart 5.
In a step 102, rock sample 5 is positioned in the groove of sample lower lock block 61, control module opens servo valve
17, the fluid that the adjustment of balanced valve 19 flows into servo valve 17 makes between the pressure of upper cylinder of hydraulic station pressure and main hydraulic cylinder group 1
Difference reach setting positive difference.
In step 103, control main piston rod 14 moves down, and the auxiliary piston bar 62 of control dual-rod hydraulic cylinder group 6 is upward
It is mobile, until auxiliary piston bar 62 is in vacant state, and setting positive difference is made to act on bearing 10；In this step, practical
Main piston rod 14 and auxiliary piston bar 62 were controlled when upper simultaneously to move, if due to auxiliary piston bar 62 is guaranteed at vacant state can
With, therefore auxiliary piston bar 62 can be moved prior to main piston rod 14.
At step 104, continue to control the movement of main piston rod 14, until main piston rod 14 is contacted with rock sample 5, and control
Servo valve 17 processed loads constant pressure；
In step 105, later, control power take-off mechanism 7 drives connecting shaft 84, torque sensing by transmission mechanism 8
Device 9 and auxiliary piston bar 62 rotate, and load constant torsion mode to rock sample 5 or gradually increase way of torque, until rock tries
Sample 5 destroys；
In step 106, the distance and torque that control module is moved down according to the main piston rod 14 that photoelectric encoder 11 uploads
The signal that sensor 9 and load sensor 4 are fed back, calculates the stress field of rock sample 5.
Since motion conditions of the auxiliary piston bar 62 in subsidiary cylinder are invisible, auxiliary piston bar 62 is being carried out in auxiliary oil cylinder
In in vacant state control when, in order to ensure when carrying out simulated experiment, auxiliary piston bar 62 be in vacant state, implementation
When, when the piston of the preferential auxiliary piston bar of this programme 62 and the bottom end cover 16 of subsidiary cylinder contact, bearing 10 on auxiliary piston bar 62 with
There is a setpoint distance, when the bearing 10 on such auxiliary piston bar 62 is contacted with auxiliary oil cylinder, auxiliary piston bar 62 is agreed between subsidiary cylinder
Surely it is in vacant state.
In order to avoid auxiliary piston bar 62 overcomes the precision for the torque influence experimental simulation that frictional force consumed when rotated, this
For scheme preferably before carrying out simulated experiment, removing the installation test specimen application rotary force of rotation-preventing mechanism 3 makes the pair of dual-rod hydraulic cylinder group 6
Piston rod 62 and the main piston rod 14 of main hydraulic cylinder group 1 rotate simultaneously, measure the friction torque under different pressures.
In conclusion the device and method that this programme provides can capture rock with the Evolution of study of rocks twist process
Stone torsional fracture destroys Precursory Characters, and then realizes the Accurate Prediction that rock torsional fracture destroys.
Claims (8)
1. rock sample torsional fracture breaking test device, which is characterized in that including mainframe, the upper beam of the mainframe and lower cross
It is separately installed on beam for applying stressed main hydraulic cylinder group and dual-rod hydraulic cylinder group, the main hydraulic cylinder group to rock sample
Main piston rod pass through upper beam end set have a load sensor；At the lower surface face main piston rod of the upper beam
The rotation-preventing mechanism of restricted load sensor and main piston rod rotation is set；
Be provided on the rotation-preventing mechanism has the sample upper holder block of the groove coordinated with rock sample thereon；The double rod hydraulic pressure
Auxiliary piston bar one end of cylinder group passes through bottom end rail and installs sample lower lock block on it, is offered on the sample lower lock block
With groove of the groove cooperation for clamping rock sample on sample upper holder block；The auxiliary piston bar other end be pierced by subsidiary cylinder,
And upper bearing (metal) is installed on it；
The side of the bottom end rail is provided with the power take-off mechanism for applying torque to the rock sample, the output machine
Structure by transmission mechanism with connect axis connection；Torque sensor, the torque sensor other end and pair are installed in the connecting shaft
The end that piston rod is provided with bearing is fixedly connected；The torque sensor, load sensor, main hydraulic cylinder group, double rod hydraulic pressure
Cylinder group and power take-off mechanism are connect with control module.
2. rock sample torsional fracture breaking test device according to claim 1, which is characterized in that the rotation-preventing mechanism includes
Anti-rotation fixing sleeve and the anti-rotation pressing plate being fixedly connected with the load sensor, the anti-rotation fixing sleeve are set in the main hydraulic pressure
Cylinder group is passed through on the main piston rod of upper beam and is fixed on the upper beam with locking member；It is arranged on the anti-rotation fixing sleeve
There is anti-rotation column, is provided on the anti-rotation pressing plate and anti-rotation column cooperation, the limit for limiting anti-rotation press plate rotary
Hole；The sample upper holder block is installed on the lower surface of the anti-rotation pressing plate.
3. rock sample torsional fracture breaking test device according to claim 1, which is characterized in that the power take-off mechanism
Servo motor including interconnection and planetary reducer, the servo motor and planetary reducer are each attached to and the lower cross
On the mounting bracket that beam is fixedly connected, the servo motor is connect with control module.
4. rock sample torsional fracture breaking test device according to claim 3, which is characterized in that the transmission mechanism includes
The belt pulley being installed on planetary reduction gear power output shaft and the synchronizing wheel being fixed in the connecting shaft, the synchronizing wheel and
Belt pulley is connected by transmission belt.
5. rock sample torsional fracture breaking test device according to claim 4, which is characterized in that the diameter of the synchronizing wheel
More than the diameter of the belt pulley.
6. rock sample torsional fracture breaking test device according to claim 1, which is characterized in that the main hydraulic cylinder group packet
It includes Master cylinder body, the servo valve being connect with hydraulic station and is set to the main piston rod that Master cylinder body is extended in Master cylinder body and both ends, it is main
Master cylinder body is divided into upper cylinder and lower oil cylinder, the servo valve to be fixed on Master cylinder body across balanced valve by the piston in the middle part of piston rod
On the valve seat of upper setting；
Four oilholes of the servo valve by oil pipe respectively with the fuel feed hole of the upper cylinder of main hydraulic cylinder group and lower oil cylinder, fuel-displaced
Hole is connected to；The at one end that load sensor is not arranged for the main piston rod is provided with the photoelectric coding for acquiring main piston rod displacement
Device；The photoelectric encoder, servo valve and balanced valve are connect with control module.
7. rock sample torsional fracture breaking test device according to claim 1, which is characterized in that the dual-rod hydraulic cylinder group
The solenoid valve that is connect including subsidiary cylinder, with hydraulic station and it is set to the auxiliary piston bar that subsidiary cylinder is extended in subsidiary cylinder and both ends,
Subsidiary cylinder is divided into upper cylinder and lower oil cylinder by the piston in the middle part of auxiliary piston bar；The upper cylinder of the dual-rod hydraulic cylinder group and lower oil
Fuel feed hole, the oil outlet of cylinder are connect by oil pipe and solenoid valve with hydraulic station；The solenoid valve is connect with the control module.
8. rock sample torsional fracture breaking test device according to claim 7, which is characterized in that the work of the auxiliary piston bar
The friction coefficient for the sealing ring contacted with subsidiary cylinder being arranged beyond the Great Wall is less than 0.11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820365343.1U CN207991973U (en) | 2018-03-16 | 2018-03-16 | Rock sample torsional fracture breaking test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820365343.1U CN207991973U (en) | 2018-03-16 | 2018-03-16 | Rock sample torsional fracture breaking test device |
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| Publication Number | Publication Date |
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| CN207991973U true CN207991973U (en) | 2018-10-19 |
Family
ID=63828209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820365343.1U Active CN207991973U (en) | 2018-03-16 | 2018-03-16 | Rock sample torsional fracture breaking test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152147A (en) * | 2018-03-16 | 2018-06-12 | 华北理工大学 | Rock sample torsional fracture breaking test device and simulation rock sample torsional fracture destruction methods |
| CN110595879A (en) * | 2019-10-14 | 2019-12-20 | 长春仟邦测试设备有限公司 | Clamp suitable for torsion fatigue test of samples of various specifications |
| CN113916702A (en) * | 2021-08-26 | 2022-01-11 | 华东理工大学 | Multi-axis creep-fatigue mechanical property testing device suitable for high-temperature environment |
-
2018
- 2018-03-16 CN CN201820365343.1U patent/CN207991973U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152147A (en) * | 2018-03-16 | 2018-06-12 | 华北理工大学 | Rock sample torsional fracture breaking test device and simulation rock sample torsional fracture destruction methods |
| CN108152147B (en) * | 2018-03-16 | 2023-09-05 | 华北理工大学 | Rock sample torsion crack damage experimental device and simulated rock sample torsion crack damage method |
| CN110595879A (en) * | 2019-10-14 | 2019-12-20 | 长春仟邦测试设备有限公司 | Clamp suitable for torsion fatigue test of samples of various specifications |
| CN113916702A (en) * | 2021-08-26 | 2022-01-11 | 华东理工大学 | Multi-axis creep-fatigue mechanical property testing device suitable for high-temperature environment |
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