CN203275213U - Portable confining pressure loading device - Google Patents
Portable confining pressure loading device Download PDFInfo
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- CN203275213U CN203275213U CN2013202828991U CN201320282899U CN203275213U CN 203275213 U CN203275213 U CN 203275213U CN 2013202828991 U CN2013202828991 U CN 2013202828991U CN 201320282899 U CN201320282899 U CN 201320282899U CN 203275213 U CN203275213 U CN 203275213U
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- confined pressure
- cylindrical shell
- pressure cylinder
- confining pressure
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Abstract
The utility model relates to a portable confining pressure loading device which comprises an impact mechanism and a confining pressure loading mechanism arranged opposite to an outlet of the impact mechanism, wherein the impact mechanism consists of an air gun barrel, a bullet support sheathed in the air gun barrel, and a flyer adhered onto the end surface of the bullet support, the confining pressure loading mechanism consists of a confining pressure drum body, a drum cover and a drum bottom, the confining pressure drum body consists of two semicircular drum bodies, two confining pressure testing sensors are arranged on the inner wall of each semicircular drum body, a catch fixedly connected with a sample to be tested is perpendicularly arranged in the confining pressure drum body, a clamp is sheathed at the outer wall of the confining pressure drum body, a through hole from which the flyer passes through is formed in the middle of the drum cover, a wire guide hole and a grouting hole are formed in the bottom of the drum. By utilizing the principle that expansive cement is expanded and pressurized after being subjected to hydration reaction, the device can provide safe and stable confining pressure loading of the sample to be tested in a closed air chamber of a light air gun, and has the advantages of being high in safety, good in air chamber closing performance, stable in confining pressure load, and the like.
Description
Technical field
The utility model relates to the confined pressure charger that a kind of high impact shock test is used, and is specially adapted to the loading that light-gas gun impacts specimen confined pressure in load test, specifically a kind of portable confined pressure charger.
Background technology
In underground engineering construction, can adopt the broken rocks of mode such as explosion, rock tunnel(ling) machine driving and percussive drilling, different from the broken rock in earth's surface, because deep rock mass is in " three height " mechanical environment, be high temperature, high pressure and high infiltration, its broken rock speed and efficient all reduce greatly.The impact failure behavior mechanical environment residing with it of deep rock mass is closely related, adopts the impact failure behavior of the method research deep rock mass of model test, to understanding its rock breaking efficiency, positive effect is arranged.
At present, in the impulse test of rock mass, have for the confined pressure load mode of rock mass sample a variety of, as having adopted the oil pressure charger in the Hopkinson pressure bar impulse test.wherein, Hopkinson pressure bar and oil pressure charger test macro are used the most general, the general confining pressure device of Hopkinson pressure bar experiment that is used for is by the confined pressure cylinder, rubber sealing boot and hydraulic pressure wet goods form, wherein the confined pressure cylinder is the container of a sealing, inside is filled with hydraulic oil and is used for test specimen is applied confined pressure, test specimen is packed into, and test specimen can depart from predeterminated position in confined pressure cylinder and the process that is filled with hydraulic oil subsequently, can cause larger experimental error on the one hand, the deflection of test specimen and bar can produce shearing force under the effect of high hydraulic pressure on the other hand, especially for the major diameter Hopkinson pressure bar, this shearing force can be destroyed the sealing effectiveness of confined pressure cylinder, hydraulic oil can cause the failure of an experiment by shear fracture efflux cylinder pressure.Simultaneously, the method impact loading speed is low, can not simulate the destruction of rock in higher rate of strain scope, and this apparatus structure is complicated, and experiment finishes rear to its dismounting difficulty, easily sample is damaged.
The utility model content
For solving in prior art because adopting three axle Hopkinson pressure bars, the experimental error that causes is large, it is low and be difficult to simulate the defective of impact failure of rock in higher rate of strain scope to impact loading speed, and exist complex structure and dismounting hard problem, the utility model to provide a kind of to impact that loading speed is high, security performance is high, the air chamber airtight performance of gas big gun reaches well the stable portable confined pressure charger of confined pressure load in beater mechanism.
the utility model is to address the above problem the technical scheme that adopts to be: a kind of portable confined pressure charger, comprise beater mechanism and confined pressure load maintainer, described beater mechanism comprises the gas gun tube, be set in the bullet holder in the gas gun tube and be bonded in film flying on bullet holder end face, described confined pressure load maintainer is relative with the outlet of gas gun tube, the confined pressure load maintainer comprises confined pressure cylinder cylindrical shell, the two ends of confined pressure cylinder cylindrical shell are respectively equipped with cover and an end, described cover middle part is provided with the through hole that passes through for film flying, the inwall of described confined pressure cylinder cylindrical shell is provided with the confined pressure testing sensor, be provided with the catch vertical with its axis in confined pressure cylinder cylindrical shell, one side of catch is attached on cover, testing sample be clipped in catch and the cylinder end between, and the axis along confined pressure cylinder cylindrical shell is arranged, be filled with expansive cement between the inwall of testing sample and confined pressure cylinder cylindrical shell, the outer wall of described confined pressure cylinder cylindrical shell is arranged with clip, the cylinder end, be provided with the wire guide that the connecting line for the confined pressure testing sensor passes through and the grouting hole that is used for injecting to confined pressure cylinder inner barrel expansive cement.
Described confined pressure cylinder cylindrical shell is comprised of two semicircle cylindrical shells, is equipped with 2 confined pressure testing sensors on the inwall of each semicircle cylindrical shell.This confined pressure cylinder cylindrical shell is comprised of two semicircle cylindrical shells, is easy to the demoulding, realizes the recycling of proving installation, the destruction that can also avoid to greatest extent the demoulding that testing sample is caused.
Be interference fit between described clip and confined pressure cylinder cylindrical shell.
The axis of the gentle gun tube in described confined pressure cylinder cylindrical shell axis overlaps.
Described cover was connected by the two ends of bolt with confined pressure cylinder cylindrical shell respectively with the cylinder end, was evenly equipped with some bolt connecting holes on the both ends of the surface of confined pressure cylinder cylindrical shell.
Described testing sample is bonded in the center of catch by glue, testing sample can not produce position deviation in process of the test, overcomes to depart from this experimental error that causes of predeterminated position because of testing sample.
adopt confined pressure charger of the present utility model, destruction characteristic to testing sample under the confined pressure condition carries out experimental test, the principle of work of this device is: at first, inwall welding confined pressure testing sensor at the semicircle cylindrical shell, two semicircle cylindrical shells are coordinated install, enter clip in direction one side pressure at the bottom of the cylinder of confined pressure cylinder cylinder body outer wall, knock gently and make it and confined pressure cylinder cylindrical shell wringing fit, tighten the bolt between cylindrical shell and cover, secondly, with glue, testing sample is bonded in the center of catch, after glue solidifies fully, catch is placed in cylindrical shell, make testing sample be positioned at the middle part of cylindrical shell, again, the wire guide with the wire of confined pressure testing sensor at the bottom of the cylinder spreads out of, and tightens cylindrical shell and the bolt of cylinder at the end, at last, by grouting hole, the expansive cement of certain proportioning is inserted between testing sample and confined pressure cylinder cylinder inboard wall, after certain hour, by the confined pressure testing sensor data that read, obtain the confined pressure power of confined pressure charger inside through certain conversion, reach the confined pressure load of setting in the confined pressure power that test obtains after, with the confined pressure load maintainer be placed in beater mechanism in the outlet of the gas gun tube position that is oppositely arranged, being about to the confined pressure load maintainer is placed in the air chamber of light-gas gun, and make the through hole on cover coaxial with the gas gun tube, the release of the indoor gases at high pressure of light-gas gun bullet, promote the bullet holder along gas gun tube high-speed motion, make film flying clash into catch with high speed, thereby reach the effect of impact failure testing sample.
In process of the test, can propagate vertically and the stress wave of side direction in testing sample, and then cause that the side direction rarefaction wave is to the repeated load of testing sample.The utility model adopts and inject expansive cement between testing sample and confined pressure cylinder cylindrical shell, can overcome the side rarefaction wave to the repeated load of testing sample, the accuracy of warranty test result.
Beneficial effect: this device utilizes the principle of expandable pressurized after the expansive cement hydration reaction, safety, stable testing sample confined pressure load can be provided in the air chamber of light-gas gun sealing, have safe, the air chamber airtight performance is good, the confined pressure load stable and the advantage such as convenient to operation; After impulse test is completed, the bolt of assembling can be unloaded, oppositely knock its hoop restriction to confined pressure cylinder cylindrical shell of clip removal, realize the recycling of proving installation; That this device has is simple in structure, easy operating and safe and reliable characteristics.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 be in Fig. 1 confined pressure cylinder cylindrical shell along the cut-open view of A-A line;
Fig. 3 is that the B of Fig. 2 is to view;
Fig. 4 is the structural representation at an end in the utility model;
Fig. 5 is application schematic diagram of the present utility model.
Reference numeral: 1, bullet holder, 2, the gas gun tube, 3, film flying, 4, cover, 5, clip, 6, the cylinder end, 7, confined pressure cylinder cylindrical shell, 8, catch, 9, the confined pressure testing sensor, 10, wire guide, 11, grouting hole, 12, testing sample, 13, expansive cement, 14, bolt connecting hole.
Embodiment
For understanding better the utility model, below in conjunction with the drawings and specific embodiments, a kind of portable confined pressure charger of the present utility model is elaborated.
as shown in Fig. 1 to 5, a kind of portable confined pressure charger, comprise beater mechanism and confined pressure load maintainer, described beater mechanism comprises gas gun tube 2, be set in bullet holder 1 and the film flying 3 that is bonded on bullet holder 1 end face in gas gun tube 2, described confined pressure load maintainer is relative with the outlet of gas gun tube 2, the confined pressure load maintainer comprises confined pressure cylinder cylindrical shell 7, the two ends of confined pressure cylinder cylindrical shell 7 are respectively equipped with cover 4 and an end 6, described cover 4 middle parts are provided with the through hole that passes through for film flying 3, described confined pressure cylinder cylindrical shell 7 is comprised of two semicircle cylindrical shells, be equipped with 2 confined pressure testing sensors 9 on the inwall of each semicircle cylindrical shell, be provided with the catch vertical with its axis 8 in confined pressure cylinder cylindrical shell 7, one side of catch 8 is attached on cover 4, testing sample 12 be clipped in catch 8 and the cylinder end 6 between, and the axis along confined pressure cylinder cylindrical shell 7 is arranged, be filled with expansive cement 13 between the inwall of testing sample 12 and confined pressure cylinder cylindrical shell 7, the outer wall of described confined pressure cylinder cylindrical shell 7 is arranged with clip 5, the cylinder end 6, is provided with the wire guide 10 that the connecting line for confined pressure testing sensor 9 passes through and is used for to the inner grouting hole 11 that injects expansive cements 13 of confined pressure cylinder cylindrical shell 7.
Further, be interference fit between this clip 5 and confined pressure cylinder cylindrical shell 7.
Further, the axis of these confined pressure cylinder cylindrical shell 7 gentle gun tubes 2 in axis overlaps.
Further, this testing sample 12 is bonded in the center of catch 8 by glue.
Further, this cover 4 was connected by the two ends of bolt with confined pressure cylinder cylindrical shell 7 respectively with the cylinder end 6, was evenly equipped with some bolt connecting holes 14 on the both ends of the surface of confined pressure cylinder cylindrical shell 7.As shown in Figure 3, an end face of confined pressure cylinder cylindrical shell 7 is provided with some bolt connecting holes 14, and this bolt connecting hole 14 is the dormant bolt connecting hole; Another end face is along the outer boss that is arranged with of confined pressure cylinder cylindrical shell 7, and boss is provided with some bolt connecting holes 14.Cover 4 was connected by the two ends of bolt with confined pressure cylinder cylindrical shell 7 respectively with the cylinder end 6, as shown in Figure 4, cylinder also is provided with the bolt connecting hole 14 corresponding with confined pressure cylinder cylindrical shell 7 end faces at the end 6, and is corresponding, also is provided with the bolt connecting through hole corresponding with confined pressure cylinder cylindrical shell 7 end faces on described cover 4.
as shown in Figure 5, assembling process and the operation when using before use of this confined pressure charger is as follows: at the inwall welding confined pressure testing sensor 9 of confined pressure cylinder cylindrical shell 7, and brushing release agent, two semicircle cylindrical shells are coordinated install, enter clip 5 in 6 direction one side pressures at the bottom of the cylinder of confined pressure cylinder cylindrical shell 7 outer walls, knock gently and make it and confined pressure cylinder cylindrical shell 7 wringing fits, tighten the bolt between cylindrical shell and cover 4, then with glue, testing sample 12 is bonded in the center of catch 8, after glue solidifies fully, catch 8 is placed in cylindrical shell, make testing sample 12 be positioned at the middle part of cylindrical shell, the wire of confined pressure testing sensor 96 wire guide 10 at the bottom of the cylinder is spread out of, tighten cylindrical shell and the bolt of cylinder at the end 6, at last, by grouting hole 11, expansive cement 13 is inserted between testing sample 12 and confined pressure cylinder cylindrical shell 7 inwalls, after certain hour, by the data of the confined pressure testing sensor 9 that reads, obtained the confined pressure power of confined pressure charger inside through certain conversion.Confined pressure testing sensor 9 arranges 2 on each semicircle confined pressure cylinder cylindrical shell 7 inwall, after each data measured, average as the confined pressure power of test testing sample 12, reach the confined pressure load of setting in the confined pressure power that test obtains after, the confined pressure load maintainer is placed in the air chamber of light-gas gun, and make the through hole on cover 4 coaxial with gas gun tube 2, the release of the indoor gases at high pressure of light-gas gun bullet, promote bullet holder 1 along gas gun tube 2 high-speed motions, make film flying 3 clash into catch 8 with high speed, thereby reach the effect of impact failure testing sample 12.
After test is completed, the confined pressure load maintainer is taken out in the air chamber of light-gas gun, oppositely knocking clip 5 makes it skid off from confined pressure cylinder cylindrical shell 7 outer walls, unload successively bolt, the cylinder end 6 and cover 4, open confined pressure cylinder cylindrical shell 7, and knock gently the catch 8 of rejecting testing sample 12 1 ends, expansive cement 13 is cut along axis direction with saw blade, i.e. the destruction situation of Observable testing sample 12 inside.The parts of the confined pressure load maintainer that unloads after test can recycle and reuse.
Claims (6)
1. portable confined pressure charger, it is characterized in that: comprise beater mechanism and confined pressure load maintainer, described beater mechanism comprises gas gun tube (2), be set in the bullet holder (1) in gas gun tube (2) and be bonded in film flying (3) on bullet holder (1) end face, described confined pressure load maintainer is relative with the outlet of gas gun tube (2), the confined pressure load maintainer comprises confined pressure cylinder cylindrical shell (7), the two ends of confined pressure cylinder cylindrical shell (7) are respectively equipped with cover (4) and an end (6), described cover (4) middle part is provided with the through hole that passes through for film flying (3), the inwall of described confined pressure cylinder cylindrical shell (7) is provided with confined pressure testing sensor (9), be provided with the catch vertical with its axis (8) in confined pressure cylinder cylindrical shell (7), one side of catch (8) is attached on cover (4), testing sample (12) is clipped between catch (8) and the cylinder end (6), and the axis along confined pressure cylinder cylindrical shell (7) is arranged, be filled with expansive cement (13) between the inwall of testing sample (12) and confined pressure cylinder cylindrical shell (7), the outer wall of described confined pressure cylinder cylindrical shell (7) is arranged with clip (5), the cylinder end (6) is provided with for the wire guide (10) that passes through of connecting line of confined pressure testing sensor (9) and is used for to the inner grouting hole (11) that injects expansive cement (13) of confined pressure cylinder cylindrical shell (7).
2. a kind of portable confined pressure charger according to claim 1, it is characterized in that: described confined pressure cylinder cylindrical shell (7) is comprised of two semicircle cylindrical shells, is equipped with 2 confined pressure testing sensors (9) on the inwall of each semicircle cylindrical shell.
3. a kind of portable confined pressure charger according to claim 1, is characterized in that: be interference fit between described clip (5) and confined pressure cylinder cylindrical shell (7).
4. a kind of portable confined pressure charger according to claim 1, it is characterized in that: the axis of the gentle gun tube in described confined pressure cylinder cylindrical shell (7) axis (2) overlaps.
5. a kind of portable confined pressure charger according to claim 1, it is characterized in that: described cover (4) is connected by the two ends of bolt with confined pressure cylinder cylindrical shell (7) respectively with the cylinder end (6), is evenly equipped with some bolt connecting holes (14) on the both ends of the surface of confined pressure cylinder cylindrical shell (7).
6. a kind of portable confined pressure charger according to claim 1, it is characterized in that: described testing sample (12) is bonded in the center of catch (8) by glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202828991U CN203275213U (en) | 2013-05-20 | 2013-05-20 | Portable confining pressure loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202828991U CN203275213U (en) | 2013-05-20 | 2013-05-20 | Portable confining pressure loading device |
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| Publication Number | Publication Date |
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| CN203275213U true CN203275213U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013202828991U Expired - Fee Related CN203275213U (en) | 2013-05-20 | 2013-05-20 | Portable confining pressure loading device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989986A (en) * | 2017-03-29 | 2017-07-28 | 西安近代化学研究所 | Explosive loading responds stress test sensor locator |
| CN109163985A (en) * | 2018-08-15 | 2019-01-08 | 三峡大学 | A kind of in-situ testing device and method of test rock sample shearing strength and long-term creep deformation |
| CN110784947A (en) * | 2019-10-29 | 2020-02-11 | 北京理工大学 | Heating device and heating method for heating sample before flat plate impact experiment |
| CN113188913A (en) * | 2021-04-26 | 2021-07-30 | 三峡大学 | Device for obtaining error of hydrofracturing geodesic stress and testing method |
| CN114112664A (en) * | 2021-11-20 | 2022-03-01 | 中国人民解放军国防科技大学 | Constant confining pressure loading experimental device |
-
2013
- 2013-05-20 CN CN2013202828991U patent/CN203275213U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989986A (en) * | 2017-03-29 | 2017-07-28 | 西安近代化学研究所 | Explosive loading responds stress test sensor locator |
| CN106989986B (en) * | 2017-03-29 | 2019-06-28 | 西安近代化学研究所 | Explosive loading responds stress test sensor locator |
| CN109163985A (en) * | 2018-08-15 | 2019-01-08 | 三峡大学 | A kind of in-situ testing device and method of test rock sample shearing strength and long-term creep deformation |
| CN109163985B (en) * | 2018-08-15 | 2020-09-08 | 三峡大学 | In-situ testing device and method for testing shear strength and long-term creep deformation of rock sample |
| CN110784947A (en) * | 2019-10-29 | 2020-02-11 | 北京理工大学 | Heating device and heating method for heating sample before flat plate impact experiment |
| CN110784947B (en) * | 2019-10-29 | 2020-10-27 | 北京理工大学 | Heating device and heating method for heating sample before flat plate impact experiment |
| CN113188913A (en) * | 2021-04-26 | 2021-07-30 | 三峡大学 | Device for obtaining error of hydrofracturing geodesic stress and testing method |
| CN114112664A (en) * | 2021-11-20 | 2022-03-01 | 中国人民解放军国防科技大学 | Constant confining pressure loading experimental device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140520 |