CN213749400U - Point load test device - Google Patents
Point load test device Download PDFInfo
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- CN213749400U CN213749400U CN202022555969.9U CN202022555969U CN213749400U CN 213749400 U CN213749400 U CN 213749400U CN 202022555969 U CN202022555969 U CN 202022555969U CN 213749400 U CN213749400 U CN 213749400U
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- baffle
- jack
- dead lever
- fixed
- point load
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Abstract
The utility model provides a point load test device, including unable adjustment base and last fixing base, and be used for connecting two bracing pieces of upper fixing base and unable adjustment base, and transversely be fixed in the fixed subassembly on the bracing piece, and be fixed in the last pressure head of upper fixing base lower extreme, and set up the pressure boost subassembly on unable adjustment base, pressure boost subassembly includes jack and pressure gage, and sets up in the lower pressure head on jack top. Because the two fixing parts are adopted to mutually extrude and fix the sample, and the first baffle and the second baffle mutually form a protection ring, the sample can be fixed simply, quickly and safely only by rotating the first fixing rod and the second fixing rod to move towards the center, and the complete hidden danger caused by sputtering after the sample is crushed is prevented; the jack can be manually pressurized, and can also be externally connected with an electric pressurizing device, so that the application range of the test device is widened, the jack can be randomly adjusted according to actual requirements, and the working efficiency is greatly improved.
Description
Technical Field
The utility model relates to a point load test device.
Background
The point load test is an important index for research on rock mass grading (RMR, CSMR and the like) and strength parameters in rock mass engineering, and has important effects on supporting and surrounding rock stability analysis of various large rock mass engineering, particularly mines and large underground rock mass engineering. Meanwhile, the point load test is simple and rapid, can be used for field test in an original state, has the advantages of less working hours, low cost and convenience for a large number of tests, and has the characteristic of testing the strength indexes of soft rocks and severely weathered rocks which are difficult to carry out conventional tests.
The test method of the rock point load strength is recommended by the test method Committee of the International society of rock mechanics in 1972, and is revised in 1985. The test is that a rock test piece is placed between two spherical conical pressing plates, concentrated load is applied to the test piece until the test piece is damaged, then the point load strength of the rock is obtained according to the damaged load, the point load strength is used as an index for rock strength classification and rock weathering classification, the anisotropy degree of the rock strength can be evaluated, other relevant strength such as uniaxial compressive strength, tensile strength and other indexes can be estimated, and the bearing capacity of a rock foundation can be calculated.
The loading device of the existing point load test equipment adopts a hand-operated hydraulic oil pump, the required labor intensity is high under the condition of large test quantity, rocks are easy to be pressed to launch in the test process, testers are easy to be shot by the rocks, a load measurement system of the existing point load test equipment needs to adopt a digital tester independent device, and the existing point load test equipment needs to be assembled during the test, has a complex equipment structure and high cost, and is complex to install and disassemble.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the technical problem that prior art exists to a simple structure, convenient operation prevents the some load test device that the rubble spattered.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a point load test device, includes unable adjustment base and last fixing base, and is used for connecting two bracing pieces of upper fixing base and unable adjustment base, and transversely is fixed in the fixed subassembly on the bracing piece, and is fixed in the last pressure head of fixing base lower extreme, and sets up the pressure boost subassembly on unable adjustment base, pressure boost subassembly includes jack and pressure gage, and sets up in the lower pressure head on jack top, and is used for providing the pressurization holding rod of pressure for the jack, fixed subassembly includes threaded connection first dead lever and second dead lever on the bracing piece, first dead lever one end is provided with first baffle, and the other end is provided with first rocking wheel, second dead lever one end is provided with the second baffle, and the other end is provided with the second rocking wheel.
Preferably, the first fixing rod, the first baffle and the first rocking wheel are combined into a first fixing part which is crossed on the supporting rod through threaded connection, the second fixing rod, the second baffle and the second rocking wheel are combined into a second fixing part which is crossed on the other supporting rod through threaded connection, the first baffle is rotatably connected with the first fixing rod, the second baffle is rotatably connected with the second fixing rod, the first baffle and the second baffle are arranged in a circular arc shape, openings of the first baffle and the second baffle are oppositely arranged, and the opening of the second baffle is smaller than the opening of the first baffle.
Preferably, the upper pressure head and the lower pressure head are opposite in a straight line, the jack is a hydraulic jack, and the jack can be externally connected with an electric pressurizing device.
Preferably, the first baffle and the second baffle are made of elastic materials, and handles convenient to rotate are vertically arranged on the first rocking wheel and the second rocking wheel.
The utility model discloses some load test device's beneficial effect: because the point load test device adopts the mutual extrusion of the two fixing parts to fix the sample, and the first baffle and the second baffle form a protection ring, the sample can be fixed simply, quickly and safely only by rotating the first fixing rod and the second fixing rod to move towards the center, and the complete hidden danger caused by sputtering after the sample is crushed is prevented; the jack can be manually pressurized, and can also be externally connected with an electric pressurizing device, so that the application range of the test device is widened, the jack can be randomly adjusted according to actual requirements, and the working efficiency is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a point load testing device of the present invention;
FIG. 2 is a top view of a mounting assembly of a point load testing apparatus of the present invention;
in the figure, 1, a base is fixed; 2. an upper fixed seat; 3. a support bar; 4. a jack; 5. pressurizing the holding rod; 6. a pressure gauge; 7. a first rocking wheel; 8. a second rocking wheel; 9. a second fixing bar; 10. a first fixing lever; 11. a first baffle plate; 12. a second baffle; 13. a lower pressure head; 14. and (4) an upper pressure head.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 to fig. 2, the utility model adopts the following technical scheme: the utility model provides a point load test device, includes unable adjustment base 1 and last fixing base 2, and is used for connecting two bracing pieces 3 of fixing base 2 and unable adjustment base 1, and transversely is fixed in the fixed subassembly on bracing piece 3, and is fixed in last pressure head 14 of 2 lower extremes of last fixing base, and sets up the pressure boost subassembly on unable adjustment base 1, the pressure boost subassembly includes jack 4 and manometer 6, and sets up in the lower pressure head 13 on jack 4 top, and is used for providing the pressurization holding rod 5 of pressure for jack 4, the fixed subassembly includes threaded connection first dead lever 10 and second dead lever 9 on bracing piece 3, first dead lever 10 one end is provided with first baffle 11, and the other end is provided with first rocking wheel 7, second dead lever 9 one end is provided with second baffle 12, and the other end is provided with the second and shakes wheel 8.
First dead lever 10, first baffle 11 and first rocking wheel 7 make up into first fixed part and pass through threaded connection on bracing piece 3, and second dead lever 9, second baffle 12 and second rocking wheel 8 make up into the second fixed part and pass through threaded connection on another bracing piece 3, first baffle 11 rotates with first dead lever 10 to be connected, and second baffle 12 rotates with second dead lever 9 to be connected, and first baffle 11 and second baffle 12 are convex setting, and first baffle 11 and the relative setting of second baffle 12 opening, and the opening of second baffle 12 is less than the opening of first baffle 11.
The upper pressing head 14 and the lower pressing head 13 are opposite in a straight line, the jack 4 is a hydraulic jack, and the jack 4 can be externally connected with an electric pressurizing device.
The first baffle 11 and the second baffle 12 are made of elastic materials, and handles (not shown) which are convenient to rotate are vertically arranged on the first rocking wheel 7 and the second rocking wheel 8.
Before jack 4 applys pressure, can rotate first rocking wheel 7 and second rocking wheel 8, make first fixed part and second fixed part to both sides, then place the sample in the middle of first dead lever 10 and second dead lever 9, rotate first rocking wheel 7 and second rocking wheel 8 again, make first fixed part and second fixed part draw close to the centre, fix the sample, first baffle 11 and second baffle 12 form the guard circle parcel outside the sample, press head 13 and exert pressure to the sample under driving with jack 4 at last, the pressure value that shows on pressure gage 6 in time obtains test data.
The utility model discloses some load test device's beneficial effect: because the point load test device adopts the mutual extrusion of the two fixing parts to fix the sample, and the first baffle and the second baffle form a protection ring, the sample can be fixed simply, quickly and safely only by rotating the first fixing rod and the second fixing rod to move towards the center, and the complete hidden danger caused by sputtering after the sample is crushed is prevented; the jack can be manually pressurized, and can also be externally connected with an electric pressurizing device, so that the application range of the test device is widened, the jack can be randomly adjusted according to actual requirements, and the working efficiency is greatly improved.
It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended manner, i.e. in a manner equivalent to "including at least … …", and not in a closed manner, i.e. in a manner not to be interpreted as "including … … only".
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (4)
1. The utility model provides a point load test device which characterized in that: including unable adjustment base and last fixing base, and be used for connecting two bracing pieces of upper fixing base and unable adjustment base, and transversely be fixed in the fixed subassembly on the bracing piece, and be fixed in the last pressure head of fixing base lower extreme, and set up the pressure boost subassembly on unable adjustment base, pressure boost subassembly includes jack and pressure gage, and sets up in the lower pressure head on jack top, and is used for providing the pressurization holding rod of pressure for the jack, fixed subassembly includes threaded connection first dead lever and second dead lever on the bracing piece, first dead lever one end is provided with first baffle, and the other end is provided with first rocking wheel, second dead lever one end is provided with the second baffle, and the other end is provided with the second and rocks the wheel.
2. The point load testing device according to claim 1, wherein: first dead lever, first baffle and first rocking wheel make up first fixed part and pass through threaded connection on the bracing piece, and second dead lever, second baffle and second rocking wheel make up the second fixed part and pass through threaded connection on another bracing piece, first baffle rotates with first dead lever to be connected, and second baffle rotates with the second dead lever to be connected, and first baffle and second baffle are convex setting, and first baffle and second baffle opening set up relatively, and the opening of second baffle is less than the opening of first baffle.
3. The point load testing device according to claim 1, wherein: the upper pressure head and the lower pressure head are opposite in a straight line, the jack is a hydraulic jack, and the jack can be externally connected with an electric pressurizing device.
4. A point load testing apparatus according to claim 2, wherein: the first baffle and the second baffle are made of elastic materials, and handles convenient to rotate are vertically arranged on the first rocking wheel and the second rocking wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022555969.9U CN213749400U (en) | 2020-11-06 | 2020-11-06 | Point load test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022555969.9U CN213749400U (en) | 2020-11-06 | 2020-11-06 | Point load test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213749400U true CN213749400U (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022555969.9U Active CN213749400U (en) | 2020-11-06 | 2020-11-06 | Point load test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213749400U (en) |
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2020
- 2020-11-06 CN CN202022555969.9U patent/CN213749400U/en active Active
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