CN215065813U - Engineering detects uses granular material strength test device - Google Patents
Engineering detects uses granular material strength test device Download PDFInfo
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- CN215065813U CN215065813U CN202120565440.7U CN202120565440U CN215065813U CN 215065813 U CN215065813 U CN 215065813U CN 202120565440 U CN202120565440 U CN 202120565440U CN 215065813 U CN215065813 U CN 215065813U
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Abstract
The utility model discloses a granular material strength test device for engineering detection, which comprises an inflator, a load applying part and a vacuum pressure chamber, wherein the load applying part comprises a hand wheel, a ball screw, a universal ball, a digital display pressure sensor and a force application rod which are sequentially connected from top to bottom; the vacuum pressure chamber is hermetically connected through an upright post bolt to form an upper vacuum cover, and the model pile penetrates through a central sealing hole of the upper vacuum cover and can move up and down in the sealing hole; the vacuum pressure chamber is hermetically connected with a pressure chamber base, and an air pressure monitoring hole, an air inlet hole and a pressure release valve are arranged on the pressure chamber base; the air pressure monitoring hole is connected with an air pressure gauge through a first air pipe, the air inlet hole is connected with the inflator through a second air pipe, and the digital display pressure sensor is connected with the digital display pressure gauge through a lead; the lower end of the force application rod is embedded into the model pile. The utility model is suitable for a small-size geotechnological test in field, the simple operation can develop geotechnological granule intensity's experiment fast, and the testing cost is low.
Description
Technical Field
The utility model belongs to the technical field of the engineering reconnaissance, concretely relates to engineering detects uses granular material strength test device.
Background
Geological exploration activities are often required in geotechnical engineering, wherein hardness detection of bottom rock or soil materials is a very necessary and conventional means, a point particle strength tester is usually used for rapidly detecting particles in a mode of jacking by a jack, and counting the strength values of a large number of rock particles, the mode seems to be convenient and fast, but the point particle strength tester is carried out under the condition of no confining pressure and has a certain entrance and exit with actual engineering, actual rock particles are usually in a certain depth of burial, surrounding soil bodies or rock bodies have surrounding pressure on the soil body particle materials, the strength values of the particles are influenced, and the detection under the condition of no confining pressure causes waste of safety coefficients. A triaxial test instrument is adopted in a laboratory to detect the confining pressure state of a sample, but the mode involves complicated sampling analysis, and a conventional triaxial vacuum pressure chamber needs to apply pressure such as porous pressure, confining pressure and back pressure. The sample is sheared by a stepping motor, so that the strength of the sample of three axes is measured. The requirement on test conditions is high, the cost is high, professional experimenters are required to operate, the test piece is manufactured, the rubber film is installed, the loading test piece is also long, the construction period is influenced, the soil sample can be disturbed during sampling, the test piece can be cut during manufacturing, and the usefulness of test piece engineering detection data is greatly influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure's engineering detects uses granular material intensity test device, is applicable to open-air small-size geotechnological experiment, and the simple operation can develop geotechnological granular strength's experiment fast, and the test cost is low.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of engineering measures and uses the strength test device of the granular material, including:
an inflator for pressurizing the inside of the vacuum pressure chamber;
the load applying part is used for applying load to the triaxial sample and comprises a hand wheel, a ball screw, a universal ball, a digital display pressure sensor and an applying rod which are sequentially connected from top to bottom; and
the vacuum pressure chamber is used for containing a soil sample;
the vacuum pressure chamber is hermetically connected through an upright post bolt to form an upper vacuum cover, and the model pile penetrates through a central sealing hole of the upper vacuum cover and can move up and down in the sealing hole; the vacuum pressure chamber is hermetically connected with a pressure chamber base, and an air pressure monitoring hole, an air inlet hole and a pressure release valve are arranged on the pressure chamber base;
the air pressure monitoring hole is connected with an air pressure gauge through a first air pipe, the air inlet hole is connected with the inflator through a second air pipe, and the digital display pressure sensor is connected with a digital display pressure gauge through a lead;
and the lower end of the force application rod is embedded into the model pile and is used for applying vertical downward force to the model pile.
Optionally, the bracket part comprises a first I-shaped steel, a second I-shaped steel and a third I-shaped steel which are sequentially arranged from top to bottom, and the first screw rod stand column and the second screw rod stand column respectively penetrate through holes at two ends of the first I-shaped steel, the second I-shaped steel and the third I-shaped steel and are fixed through bolts.
Further, the ball screw is matched with a nut through threads, and the nut is fixed on the first I-shaped steel.
Furthermore, the force application rod penetrates through a linear bearing, and the linear bearing is fixed on the second I-shaped steel.
Further, the pressure chamber base is placed above the third i-beam.
Further, the barometer and the digital display manometer are fixed on the first I-shaped steel.
Compared with the prior art, the utility model discloses following beneficial effect has: simple structure is applicable to open-air small-size geotechnological test, and the simple operation can develop geotechnological granule intensity's test fast, and the testing cost is low.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the load applying part of the present invention;
FIG. 3 is an enlarged structural view of the universal ball and the digital display pressure sensor of the present invention;
fig. 4 is a schematic structural diagram of the vacuum pressure chamber of the present invention.
In the figure: 101. a first I-steel; 102. a second I-steel; 103. a first lead screw upright post; 104. a third I-steel; 105. a second lead screw upright post; 201. a hand wheel; 202. a first air pipe; 203. a barometer; 204. a digital display pressure gauge; 205. an inflator; 206. a wire; 207. a second air pipe; 208. a vacuum pressure chamber; 208-1, an air pressure monitoring hole; 208-2, a pressure chamber base; 208-3, an air inlet hole; 208-4, a pressure relief valve; 208-5, column bolts; 208-6, model piles; 214. a digital display pressure sensor; 215. a linear bearing; 216. a force application rod; 217. a universal ball; 218. a nut; 219. and a ball screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to fig. 1-4.
A strength testing device for granular materials for engineering tests, as shown in figures 1-4, comprises a bracket part, a vacuum pressure chamber 208 for containing soil samples, an inflator 205 for pressurizing the inside of the vacuum pressure chamber, and a load applying part for applying load to three-axis samples.
As shown in fig. 1, the bracket of the present invention includes a first i-beam 101, a second i-beam 102, and a third i-beam 104, which are sequentially arranged from top to bottom, and a first lead screw column 103 and a second lead screw column 105 respectively pass through holes at two ends of the first i-beam 101, the second i-beam 102, and the third i-beam 104, and are fixed by bolts to form a vertical bracket. The first i-beam 101, the second i-beam 102 and the third i-beam 104 are industrial standard i-beams, and the second lead screw upright 105 and the first lead screw upright 103 are standard parts with a diameter of 24.
As shown in fig. 2, the load applying part of the present invention includes a hand wheel 201, a ball screw 219, a universal ball 217, a digital display pressure sensor 214 and a force applying rod 216, the hand wheel 201 is fixed with the ball screw 219, the ball screw 219 is matched with a nut 218 through threads, the nut 218 is fixed on the first i-beam 101, and a hole is provided for the ball screw 219 to pass through; the universal ball 217 is connected with the ball screw 219 through threads, and the two are fixedly connected; the ball at the lower part of the universal ball 217 sinks into the groove of the digital display pressure sensor 214, as shown in FIG. 3; the force application rod 216 is fixedly connected with the digital display pressure sensor 214 and penetrates through the linear bearing 215, the linear bearing 215 is fixed on the second I-shaped steel 102, and a hole is formed for the force application rod 216 to penetrate through.
Specifically, the hand wheel 201 is a standard part hand wheel with the diameter of 250mm, the ball screw 219 is a standard part of the ball screw with the diameter of 24 mm, and the nut 218 is matched with the standard part; the universal ball 217 is a ws-02 stainless steel standard universal ball; the digital display pressure sensor 214 is a pressure sensor capable of real-time reading; the force application rod 216 is a stainless steel rod member with a diameter of 24; the linear bearing 215 is matched with the force application rod 216.
As shown in fig. 4, the vacuum pressure chamber 208 of the present invention is a testing container for holding soil samples and carrying out tests. The vacuum pressure chamber 208 is hermetically connected through an upright bolt 208-5 to form an upper vacuum cover, and the model pile 208-6 penetrates through a central sealing hole of the upper vacuum cover and can move up and down in the sealing hole; an air pressure monitoring hole 208-1, an air inlet hole 208-3 and a pressure relief valve 208-4 are arranged on a pressure chamber base 208-2, and the three holes are provided with switchable valves and are communicated with the inner space of the vacuum pressure chamber 208; the vacuum pressure chamber 208 is hermetically connected with the pressure chamber base 208-2, and a closed and sealed environment is formed inside the vacuum pressure chamber 208; the base 208-2 is placed over the third i-beam 104. Specifically, the air pressure monitoring hole 208-1 is connected with the air pressure gauge 203 through the first air pipe 202, the air inlet hole 208-3 is connected with the inflator 205 through the second air pipe 207, the digital display pressure sensor 214 is connected with the digital display pressure gauge 204 through a lead, and the air pressure gauge 203 and the digital display pressure gauge 204 are fixed on the first I-shaped steel 101; the lower end of the force application rod 216 is embedded and connected with the model pile 208-6 to form a rod member, and can apply vertical downward force to the model pile 208-6.
The utility model discloses in, barometer 203: the pressure gauge is a universal part, and is a sub-ordinary instrument YAPU. DDP.0102 digital display type pressure gauge (split type). The digital display pressure gauge 204: the ZSE30A-01-P-L high-precision digital display pressure gauge is a universal part. The pressure release valve 208-4: the pressure regulating valve is a general part, and is an SMC type pressure regulating valve AR2000-02 type. The digital display pressure sensor 214: the pressure sensor is a universal part, and is of a loose digital display pressure sensor DP-101 type.
Particularly, the utility model discloses a realize its function like this:
placing a particle strength sample subjected to wax sealing treatment into a vacuum pressure chamber 208, closing a pressure release valve 208-4, connecting an air inlet 208-3 and an air outlet of an inflator 205 by using a second air pipe 207, manually pressurizing the interior of the vacuum pressure chamber 208 through the air inlet 208-3 by using the inflator 205, simultaneously opening an air pressure monitoring hole 208-1, monitoring to apply proper confining pressure to the sample by using an air pressure gauge 203, and controlling the air pressure by using a switch of a pressure gauge 203 and a valve of the pressure release valve 208-4 to finish the application of the confining pressure to the sample.
It is rotatory to drive ball screw 219 through rotatory hand wheel 201, be fixed in on the first I-steel 101 because of nut 218, ball screw 219 can move down, apply decurrent pressure to the universal ball 217 that is connected, universal ball 217 top is connected can synchronous rotation with ball screw 219, and the digital display pressure sensor 214 of below and the ball contact of universal ball 217, the ball rotates and can not drive digital display pressure sensor 214 and rotate, and can apply vertical decurrent power to digital display pressure sensor 214, the digital display manometer 204 that is connected with digital display pressure sensor 214 is used for monitoring current pressure size, according to experimental demand adjustment hand wheel 201 torque size, reach the purpose of adjustment pressure size.
The digital display pressure sensor 214 transmits force to the force application rod 216, wherein the linear bearing 215 sleeved on the force application rod 216 can ensure that the force application rod 216 moves vertically and downwards along the axial direction without inclination; the force application rod 216 transmits vertical downward force to the model pile 208-6, the model pile 208-6 is buried in a soil body sample, and the vertical downward force can simulate the load effect of a pile foundation, so that the stress sinking process of the soil body pile foundation is simulated;
the force application rod 216 is provided with scales, the upper surface of the second I-beam 102 serves as a reference line, the settlement displacement of the model pile 208-6 can be observed and preliminarily measured by comparing with an initial scale value, preliminary data recording is carried out on the pressure value of the digital display pressure gauge 204, and the method is suitable for preliminarily surveying the field soil body.
After the test is completed, the air inlet hole 208-3 is closed, the second air pipe 207 is disconnected, the pressure release valve 208-4 is opened to release pressure, after the air pressure is balanced, the hand wheel 201 is rotated to reset the ball screw 219, the vacuum pressure chamber 208 is taken down, the sample is taken out, and the soil mass model pile test is completed.
The utility model discloses a simplify traditional triaxial test instrument, be applicable to the triaxial test of open-air environment, reduce the reliance to electrical equipment such as motor, air compressor machine, reduce cost improves test efficiency. Meanwhile, the construction worker can quickly understand, master and use the data and provide useful data.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The utility model provides a granule material strength test device for engineering inspection which characterized in that includes:
an inflator for pressurizing the inside of the vacuum pressure chamber;
the load applying part is used for applying load to the triaxial sample and comprises a hand wheel, a ball screw, a universal ball, a digital display pressure sensor and an applying rod which are sequentially connected from top to bottom; and
the vacuum pressure chamber is used for containing a soil sample;
the vacuum pressure chamber is hermetically connected through an upright post bolt to form an upper vacuum cover, and the model pile penetrates through a central sealing hole of the upper vacuum cover and can move up and down in the sealing hole; the vacuum pressure chamber is hermetically connected with a pressure chamber base, and an air pressure monitoring hole, an air inlet hole and a pressure release valve are arranged on the pressure chamber base;
the air pressure monitoring hole is connected with an air pressure gauge through a first air pipe, the air inlet hole is connected with the inflator through a second air pipe, and the digital display pressure sensor is connected with a digital display pressure gauge through a lead;
and the lower end of the force application rod is embedded into the model pile and is used for applying vertical downward force to the model pile.
2. The apparatus according to claim 1, further comprising a bracket portion, wherein the bracket portion comprises a first i-beam, a second i-beam, and a third i-beam, which are sequentially disposed from top to bottom, and the first screw rod upright and the second screw rod upright respectively pass through holes at two ends of the first i-beam, the second i-beam, and the third i-beam and are fixed by bolts.
3. The apparatus for testing strength of granular material for engineering test according to claim 2, wherein the ball screw is matched with a nut through threads, and the nut is fixed on the first i-steel.
4. The apparatus for testing strength of granular material for engineering test according to claim 2, wherein the force application rod passes through a linear bearing, and the linear bearing is fixed on the second i-steel.
5. The engineering testing granular material strength testing device according to claim 2, wherein the pressure chamber base is placed above the third i-beam.
6. The apparatus for testing strength of granular material for engineering test according to claim 2, wherein the barometer and the digital display manometer are fixed on the first i-steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120565440.7U CN215065813U (en) | 2021-03-19 | 2021-03-19 | Engineering detects uses granular material strength test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120565440.7U CN215065813U (en) | 2021-03-19 | 2021-03-19 | Engineering detects uses granular material strength test device |
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| CN215065813U true CN215065813U (en) | 2021-12-07 |
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| CN202120565440.7U Active CN215065813U (en) | 2021-03-19 | 2021-03-19 | Engineering detects uses granular material strength test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216385A (en) * | 2021-12-13 | 2022-03-22 | 昆明冶金高等专科学校 | Geological survey ground degree of depth measuring device |
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2021
- 2021-03-19 CN CN202120565440.7U patent/CN215065813U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216385A (en) * | 2021-12-13 | 2022-03-22 | 昆明冶金高等专科学校 | Geological survey ground degree of depth measuring device |
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