CN211013864U - Direct shear apparatus - Google Patents
Direct shear apparatus Download PDFInfo
- Publication number
- CN211013864U CN211013864U CN201921862908.8U CN201921862908U CN211013864U CN 211013864 U CN211013864 U CN 211013864U CN 201921862908 U CN201921862908 U CN 201921862908U CN 211013864 U CN211013864 U CN 211013864U
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- box
- box body
- groove
- horizontal
- shearing
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- 238000010008 shearing Methods 0.000 claims abstract description 45
- 238000013016 damping Methods 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 27
- 239000002689 soil Substances 0.000 claims abstract description 25
- 238000007710 freezing Methods 0.000 claims abstract description 19
- 230000008014 freezing Effects 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000035939 shock Effects 0.000 abstract description 4
- 206010044565 Tremor Diseases 0.000 abstract description 3
- 230000001174 ascending effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a direct shearing apparatus, which relates to the technical field of geological engineering and comprises a base and a box body, wherein the base is provided with a groove, and the box body is arranged in the groove; a freezing pipe is wound on the surface of the box body, and a shearing device and a first temperature sensor are arranged in the box body; a vertical damping device is arranged between the box body and the bottom surface of the groove; the vertical damping device comprises a metal elastic plate, a first spring and a pressing plate; horizontal damping devices are symmetrically arranged in the middle parts of two sides of the box body and comprise damping sleeves and connecting rods; the box body is positioned in the groove by arranging the base with the groove, and horizontal damping devices are arranged on two sides of the box body to damp vibration generated in the horizontal direction of the box body; set up vertical damping device simultaneously between box and recess bottom, promoted the box at the ascending shock attenuation effect of vertical side, make the box avoid leading to the box to appear shakiness and influence the detection because of carrying on the vibrations that frozen soil sample shear strength produced often.
Description
Technical Field
The utility model relates to a geological engineering technical field, concretely relates to direct shear apparatus.
Background
In the process of mechanical research of frozen soil, direct shear experiments of the frozen soil are the most basic and essential to the mechanical properties of the frozen soil. However, the change of the temperature directly affects the change of the ice content and the unfrozen water content in the frozen soil, so that the mechanical property of the frozen soil is seriously affected, and the temperature is extremely sensitive to the conversion between the ice content and the unfrozen water content in the frozen soil. In view of the above problems, the full-automatic frozen soil direct shear apparatus (publication number: CN207336255U) of the chinese patent proposes to set a thermostat outside the shearing device, and adjust the temperature of the temperature-adjusting shearing box of the thermostat to be the same as or within ± 1 ℃ of the temperature of the frozen soil sample, so as to ensure that the property of the frozen soil sample is not affected by the temperature and the property is not changed too much during the experiment. However, the shear strength of the frozen soil sample is detected, and a large vibration is generated to affect the stability of an external incubator, thereby affecting the detection.
SUMMERY OF THE UTILITY MODEL
In order to solve the prior art problems, the utility model arranges the base with the groove, so that the box body is positioned in the groove, and the horizontal damping devices are arranged at the two sides of the box body to damp the vibration generated in the horizontal direction of the box body; set up vertical damping device simultaneously between box and recess bottom, promoted the box at the ascending shock attenuation effect of vertical side, make the box avoid leading to the box to appear shakiness and influence the detection because of carrying on the vibrations that frozen soil sample shear strength produced often.
The utility model discloses specifically adopt following technical scheme:
a direct shear apparatus comprises a base and a box body;
the base is provided with a groove, and the box body is arranged in the groove;
a freezing pipe used for cooling the box body is wound on the surface of the box body, a box cover matched with the box body is arranged at the upper end of the box body, a shearing device and a first temperature sensor used for detecting the temperature in the box body are arranged in the box body, the first temperature sensor is fixed on the inner wall of the box body and is electrically connected with a controller, and the controller is electrically connected with a control terminal;
a vertical damping device for damping the box body in the vertical direction is arranged between the box body and the bottom surface of the groove; the vertical damping device comprises a metal elastic plate, a first spring and a pressing plate; two ends of the metal elastic plate are respectively fixedly connected with two inner side walls of the groove; the arc-shaped upper end surface of the metal elastic plate is contacted with the lower end of the pressing plate; the box body is fixed on the upper end face of the pressing plate; two ends of the pressing plate are fixedly connected with two inner side walls of the groove; the horizontal bottom of the metal elastic plate is fixedly connected with the bottom surface of the groove, the upper end of the first spring is fixedly connected with the arc-shaped bottom surface of the metal elastic plate, and the lower end of the first spring is fixedly connected with the groove;
horizontal damping devices for horizontally damping the box body are symmetrically arranged in the middle of two sides of the box body, each horizontal damping device comprises a damping sleeve and a connecting rod, and the bottom of each damping sleeve is fixed on the inner side wall of each groove; a second spring is arranged in the damping sleeve, and one end of the connecting rod is fixedly connected with a damping pressing block corresponding to the second spring; the other end of the connecting rod is fixedly connected with the outer side wall of the box body.
The further scheme is that the number of the metal elastic plates is multiple, and the metal elastic plates are connected through fixing pieces.
The shearing device comprises a shearing box, a vertical hydraulic power device and a horizontal hydraulic power device, wherein the vertical hydraulic power device applies vertical pressure to the shearing box, the horizontal hydraulic power device applies horizontal thrust to the shearing box, the shearing box comprises an upper shearing box and a lower shearing box, a second temperature sensor used for detecting the temperature of the shearing box is arranged on the upper surface of the upper shearing box, and the second temperature sensor is electrically connected with the controller.
The vertical hydraulic power device comprises a first hydraulic cylinder, the first hydraulic cylinder is driven by a hydraulic driving device, the end part of a piston rod of the first hydraulic cylinder is connected with a vertical thrust top which is used for pushing the top of the upper shearing box and applying vertical pressure to a soil sample in the shearing box, a vertical pressure sensor and a vertical displacement sensor are installed in the vertical thrust top, and the vertical pressure sensor and the vertical displacement sensor are electrically connected with the controller.
The horizontal hydraulic power device comprises a second hydraulic cylinder fixedly arranged on the bottom surface of the box body, the second hydraulic cylinder is driven by a hydraulic driving device, the end part of a piston rod of the second hydraulic cylinder is connected with a horizontal thrust top which is used for pushing against the side wall of the lower shearing box and applying horizontal thrust to a soil sample in the shearing box, a horizontal pressure sensor and a horizontal displacement sensor are installed in the horizontal thrust top, and the horizontal pressure sensor and the horizontal displacement sensor are electrically connected with the controller.
The further scheme is that one end of the freezing pipe penetrates through the inner wall of one side of the groove and is connected with a liquid outlet of an external refrigerating liquid box, and the other end of the freezing pipe penetrates through the inner wall of the other side of the groove and is connected with a liquid inlet of the refrigerating liquid box.
The further scheme is that a supporting beam is arranged above the shearing box, two ends of the supporting beam are fixedly connected with two inner side walls of the box body, and the first hydraulic cylinder is fixed at the lower end of the supporting beam.
The utility model has the advantages that:
the box body is arranged outside the shearing device, the freezing pipe is wound on the outer surface of the box body, frozen saline water is introduced into the freezing pipe, the temperature in the box body is detected through the first temperature sensor, the temperature in the box body is maintained in a required lower range, the ice content and the unfrozen water content of a frozen soil sample in the box body are not changed, and the shear strength detection of the frozen soil sample is not influenced;
the box body is positioned in the groove by arranging the base with the groove, and horizontal damping devices are arranged on two sides of the box body to damp vibration generated in the horizontal direction of the box body; set up vertical damping device simultaneously between box and recess bottom, promoted the box at the ascending shock attenuation effect of vertical side, make the box avoid leading to the box to appear shakiness and influence the detection because of carrying on the vibrations that frozen soil sample shear strength produced often.
Drawings
Fig. 1 is a schematic structural diagram of a direct shearing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the embodiment of the present invention in which a freezing pipe is wound on the box body;
the attached drawings are marked as follows: 1-a base; 10-a groove; 2-a box body; 20-a freezing pipe; 21-box cover; 22-a first temperature sensor; 23-a cross beam; 30-a metal spring plate; 300-a fixture; 31-a first spring; 32-a platen; 40-a damping sleeve; 41-a connecting rod; 42-a second spring; 43-a shock-absorbing press block; 50-upper cutting box; 51-lower shear box; 52-a second temperature sensor; 60-a first hydraulic cylinder; 61-vertical thrust plug; 70-a second hydraulic cylinder; 71-horizontal thrust plug.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1-2, one embodiment of the present invention discloses a direct shear apparatus, which comprises a base 1 and a box body 2, wherein the base 1 is provided with a groove 10, and the box body 2 is arranged in the groove 10; a freezing pipe 20 for cooling the box body 2 is wound on the surface of the box body 2, a box cover 21 matched with the box body 2 is arranged at the upper end of the box body 2, a shearing device and a first temperature sensor 22 for detecting the temperature in the box body 2 are arranged in the box body 2, the first temperature sensor 22 is fixed on the inner wall of the box body 2, the first temperature sensor 22 is electrically connected with a controller, and the controller is electrically connected with a control terminal; a vertical damping device for damping the box body 2 in the vertical direction is arranged between the box body 2 and the bottom surface of the groove 10; the vertical shock-absorbing device comprises a metal elastic plate 30, a first spring 31 and a pressure plate 32; two ends of the metal elastic plate 30 are respectively fixedly connected with two inner side walls of the groove 10; the arc-shaped upper end surface of the metal elastic plate 30 is contacted with the lower end of the pressure plate 32; the box body 2 is fixed on the upper end surface of the pressing plate 32; two ends of the pressing plate 32 are fixedly connected with two inner side walls of the groove 10; the horizontal bottom of the metal elastic plate 30 is fixedly connected with the bottom surface of the groove 10, the upper end of the first spring 31 is fixedly connected with the arc-shaped bottom surface of the metal elastic plate 30, and the lower end of the first spring 31 is fixedly connected with the groove 10; horizontal damping devices for horizontally damping the box body are symmetrically arranged in the middle of two sides of the box body 2, each horizontal damping device comprises a damping sleeve 40 and a connecting rod 41, and the bottom of each damping sleeve 40 is fixed on the inner side wall of each groove 10; a second spring 42 is arranged in the damping sleeve 40, and one end of the connecting rod 41 is fixedly connected with a damping pressing block 43 corresponding to the second spring 42; the other end of the connecting rod 41 is fixedly connected with the outer side wall of the box body 2. Vibration energy generated by the box body in the vertical direction is transmitted to the metal elastic plate through the pressing plate, the metal elastic plate absorbs a part of vibration energy through deformation, the first spring is pressed in the deformation process of the metal elastic plate to deform the first spring, and the part of vibration energy is absorbed while the first spring deforms, so that the vibration energy absorption of the box body in the vertical direction is realized, meanwhile, the vibration energy generated by the box body in the horizontal direction can be transmitted to the damping pressing block and the second spring through the connecting rod, and finally, the energy is transmitted to the inner wall of the groove and absorbed by the inner wall; the freezing saline water is introduced into the freezing pipe wound on the outer surface of the box body, the temperature in the box body is detected through the first temperature sensor, the temperature in the box body is maintained in a required lower range, and the ice content and the unfrozen water content of the frozen soil sample in the box body are guaranteed to be unchanged.
In this embodiment, the number of the metal elastic plates 30 is set to be plural, and the plural metal elastic plates 30 are connected by the fixing member 300. The ability of the metal elastic plate to absorb shock energy can be enhanced.
In this embodiment, the shearing device includes the shearing box, the vertical hydraulic power device who exerts vertical pressure to the shearing box, and the horizontal hydraulic power device who exerts horizontal thrust to the shearing box, and the shearing box includes upper shearing box 50 and lower shearing box 51, and upper surface of upper shearing box 50 is provided with second temperature sensor 52 for detecting the shearing box temperature, and second temperature sensor 52 is connected with the controller electricity. Through setting up vertical hydraulic power device and horizontal hydraulic power device, exert vertical pressure and horizontal thrust to being equipped with frozen soil sample, make the soil sample along upper and lower box horizontal contact surface shear displacement until destruction, realize the shear strength to frozen soil sample and detect.
In this embodiment, the vertical hydraulic power device includes a first hydraulic cylinder 60, the first hydraulic cylinder 60 is driven by a hydraulic driving device, a piston rod end of the first hydraulic cylinder 60 is connected with a vertical thrust plunger 61 for pushing against the top center of the upper shear box 50 and applying vertical pressure to the soil sample in the shear box, a vertical pressure sensor and a vertical displacement sensor are installed in the vertical thrust plunger 61, and both the vertical pressure sensor and the vertical displacement sensor are electrically connected with the controller. The first hydraulic cylinder is arranged to apply vertical thrust to the upper shearing box, so that errors caused by the fact that manual power applies the vertical thrust are eliminated.
In this embodiment, the horizontal hydraulic power device includes a second hydraulic cylinder 70 fixedly disposed on the bottom surface of the box body 2, the second hydraulic cylinder is driven by the hydraulic driving device, a piston rod end of the second hydraulic cylinder 70 is connected with a horizontal thrust plug 71 for pushing against a side wall of the lower shear box 51 and applying horizontal thrust to the soil sample in the shear box, a horizontal pressure sensor and a horizontal displacement sensor are mounted in the horizontal thrust plug 71, and both the horizontal pressure sensor and the horizontal displacement sensor are electrically connected with the controller. The second hydraulic cylinder is arranged to apply horizontal thrust to the lower shearing box, so that errors caused by the fact that manual power applies the horizontal thrust are eliminated.
In this embodiment, one end of the freezing pipe 20 passes through the inner wall of one side of the groove 10 and is connected with the liquid outlet of the external freezing liquid tank, and the other end of the freezing pipe 20 passes through the inner wall of the other side of the groove 10 and is connected with the liquid inlet of the freezing liquid tank. The freezing pipe and other structures are integrated.
In this embodiment, a support beam 23 is provided above the shear box, both ends of the support beam 23 are fixedly connected to both inner side walls of the box body 2, and the first hydraulic cylinder 60 is fixed to the lower end of the support beam 23. And fixing the first hydraulic cylinder.
Finally, only the specific embodiments of the present invention have been described in detail. The invention is not limited to the specific embodiments described above. Equivalent modifications and substitutions by those skilled in the art to the present invention are also within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.
Claims (7)
1. The utility model provides a direct shear apparatus, includes base (1) and box (2), its characterized in that:
the base (1) is provided with a groove (10), and the box body (2) is arranged in the groove (10);
a freezing pipe (20) used for cooling the box body (2) is wound on the surface of the box body (2), a box cover (21) matched with the box body (2) is arranged at the upper end of the box body (2), a shearing device and a first temperature sensor (22) used for detecting the temperature in the box body (2) are arranged in the box body (2), the first temperature sensor (22) is fixed on the inner wall of the box body (2), the first temperature sensor (22) is electrically connected with a controller, and the controller is electrically connected with a control terminal;
a vertical damping device for damping the box body (2) in the vertical direction is arranged between the box body (2) and the bottom surface of the groove (10); the vertical damping device comprises a metal elastic plate (30), a first spring (31) and a pressure plate (32); two ends of the metal elastic plate (30) are respectively fixedly connected with two inner side walls of the groove (10); the arc-shaped upper end surface of the metal elastic plate (30) is contacted with the lower end of the pressing plate (32); the box body (2) is fixed on the upper end surface of the pressing plate (32); two ends of the pressing plate (32) are fixedly connected with two inner side walls of the groove (10); the horizontal bottom of the metal elastic plate (30) is fixedly connected with the bottom surface of the groove (10), the upper end of the first spring (31) is fixedly connected with the arc-shaped bottom surface of the metal elastic plate (30), and the lower end of the first spring (31) is fixedly connected with the groove (10);
horizontal damping devices for horizontally damping the box body are symmetrically arranged in the middle of two sides of the box body (2), each horizontal damping device comprises a damping sleeve (40) and a connecting rod (41), and the bottom of each damping sleeve (40) is fixed on the inner side wall of each groove (10); a second spring (42) is arranged in the damping sleeve (40), and one end of the connecting rod (41) is fixedly connected with a damping pressing block (43) corresponding to the second spring (42); the other end of the connecting rod (41) is fixedly connected with the outer side wall of the box body (2).
2. A direct shear apparatus as defined in claim 1, wherein:
the number of the metal elastic plates (30) is set to be a plurality, and the plurality of metal elastic plates (30) are connected through fixing pieces (300).
3. A direct shear apparatus as defined in claim 1, wherein:
the shearing mechanism includes the shearing box, right the perpendicular hydraulic power unit of shearing box applied vertical pressure, right the horizontal hydraulic power unit of horizontal thrust is applyed to the shearing box, the shearing box includes last shearing box (50) and lower shearing box (51), it is used for detecting to go up shearing box (50) upper surface be provided with second temperature sensor (52) of shearing box temperature, second temperature sensor (52) with the controller electricity is connected.
4. A direct shear apparatus as claimed in claim 3, wherein:
perpendicular hydraulic power unit includes first pneumatic cylinder (60), first pneumatic cylinder (60) are through the hydraulic drive device drive, the piston rod end connection of first pneumatic cylinder (60) has and is used for the top go up shear box (50) top central point and put the department and to the perpendicular thrust top (61) of perpendicular pressure are applyed to the soil sample in the shear box, install perpendicular pressure sensor and vertical displacement sensor in perpendicular thrust top (61), perpendicular pressure sensor with perpendicular displacement sensor all with the controller electricity is connected.
5. A direct shear apparatus as claimed in claim 3, wherein:
horizontal hydraulic power unit including fixed set up in second hydraulic cylinder (70) on box (2) bottom surface, the second hydraulic cylinder passes through the hydraulic drive device drive, the piston rod end connection of second hydraulic cylinder (70) is used for the top cut a lateral wall of box (51) down and to horizontal thrust top (71) of horizontal thrust is applyed to the soil sample in the shearing box, install horizontal pressure sensor and horizontal displacement sensor in horizontal thrust top (71), horizontal pressure sensor with horizontal displacement sensor all with the controller electricity is connected.
6. A direct shear apparatus as defined in claim 1, wherein:
one end of the freezing pipe (20) penetrates through the inner wall of one side of the groove (10) to be connected with a liquid outlet of an external refrigerating liquid box, and the other end of the freezing pipe (20) penetrates through the inner wall of the other side of the groove (10) to be connected with a liquid inlet of the refrigerating liquid box.
7. A direct shear apparatus as claimed in claim 4, wherein:
a supporting beam (23) is arranged above the shearing box, two ends of the supporting beam (23) are fixedly connected with two inner side walls of the box body (2), and the first hydraulic cylinder (60) is fixed at the lower end of the supporting beam (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921862908.8U CN211013864U (en) | 2019-10-31 | 2019-10-31 | Direct shear apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921862908.8U CN211013864U (en) | 2019-10-31 | 2019-10-31 | Direct shear apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211013864U true CN211013864U (en) | 2020-07-14 |
Family
ID=71478965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921862908.8U Expired - Fee Related CN211013864U (en) | 2019-10-31 | 2019-10-31 | Direct shear apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211013864U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982662A (en) * | 2020-09-30 | 2020-11-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Device and test method for detecting shear strength of composite steel plate |
-
2019
- 2019-10-31 CN CN201921862908.8U patent/CN211013864U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982662A (en) * | 2020-09-30 | 2020-11-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Device and test method for detecting shear strength of composite steel plate |
| CN111982662B (en) * | 2020-09-30 | 2022-03-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Device and test method for detecting shear strength of composite steel plate |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 |