CN204389295U - The limit-type uniaxial direct tensile sample fixing device of scroll chuck - Google Patents
The limit-type uniaxial direct tensile sample fixing device of scroll chuck Download PDFInfo
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- CN204389295U CN204389295U CN201520092817.6U CN201520092817U CN204389295U CN 204389295 U CN204389295 U CN 204389295U CN 201520092817 U CN201520092817 U CN 201520092817U CN 204389295 U CN204389295 U CN 204389295U
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- center position
- limit mechanism
- scroll chuck
- limit
- card extender
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Abstract
The limit-type uniaxial direct tensile sample fixing device of scroll chuck, be made up of down clamp and upper position fixture, down clamp comprises the lower sub be connected with testing machine bottom-loaded seat, the lower endcaps of fixing sample, the lower chain connecting lower sub and lower endcaps, the first volute spring, the first center position-limit mechanism and the second center position-limit mechanism; Upper position fixture comprises the top connection be connected with testing machine top-loaded seat, the upper end cap of fixing sample, the upper chain connecting top connection and upper end cap, the second volute spring, the 3rd center position-limit mechanism and the 4th center position-limit mechanism; Described first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism are identical with the structure of the 4th center position-limit mechanism, form by scroll chuck, support member and card extender, one end of support member is connected with card extender, and the other end is connected with scroll chuck.
Description
Technical field
The utility model belongs to device hard brittle material being carried out to direct tensile test, particularly a kind of rock sample stationary installation supporting with testing machine in direct tensile test.
Background technology
Carrying out direct tensile test to rock sample is the Main Means obtaining Tensile Strength of Rock data.In direct tensile test, be generally made up of upper position fixture and down clamp with the sample fixing device that testing machine is supporting, upper position fixture and down clamp include the joint be connected with testing machine, the end cap of fixing sample, the chain of jointing and end cap; Down clamp, due to the aliquot that will accept tension test and destroy and lower endcaps, also comprises the supporting member of rigid canister and backing plate composition.The sample fixing device of this kind of structure, because supporting member can not play effective supporting role in whole process of the test to sample and lower endcaps, thus can not carry out the test of the mechanics effect after peak stress.
CN200610022224.8 discloses a kind of spring thrust down clamp of direct tensile test, and the supporting member of down clamp in sample fixing device is designed to the combination of compression helical spring or compression helical spring and supporting plate.Although achieve the mechanics effect after directly testing rock fragile materials test peak stress like this, but still have the following disadvantages: in (1) test, the center line of compression helical spring does not easily overlap with the center line of testing machine, thus additional eccentric force can be formed to tested test specimen, affect the accuracy of test result; (2) because upper position fixture is different from the structure of down clamp, thus in test, test specimen two ends loading rigidity is inconsistent, causes tested rock to destroy suddenly, is not still very desirable to effective mechanics effect measured after peak stress; (3), when chain is connected with end cap, operation is very inconvenient.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided scroll chuck limit-type uniaxial direct tensile sample fixing device, to guarantee in test that helical spring center line overlaps with the center line of testing machine and to load rigidity consistent at test specimen two ends, thus the mechanics effect after the accuracy of raising test result and more effective mensuration rock test peak stress.
The limit-type uniaxial direct tensile sample fixing device of scroll chuck described in the utility model, is made up of down clamp and upper position fixture; Described down clamp comprises the lower sub be connected with testing machine bottom-loaded seat, the lower endcaps of fixing sample, the lower chain connecting lower sub and lower endcaps, the first volute spring, the first center position-limit mechanism and the second center position-limit mechanism, and lower endcaps is made up of sample fixing and linkage section; Described upper position fixture comprises the top connection be connected with testing machine top-loaded seat, the upper end cap of fixing sample, the upper chain connecting top connection and upper end cap, the second volute spring, the 3rd center position-limit mechanism and the 4th center position-limit mechanism, and upper end cap is made up of sample fixing and linkage section; Described first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism are identical with the structure of the 4th center position-limit mechanism, form by scroll chuck, support member and card extender, one end of support member is connected with card extender, and the other end is connected with scroll chuck; First center position-limit mechanism and testing machine bottom-loaded seat combine to be installed, scroll chuck in first center position-limit mechanism and testing machine bottom-loaded seated connection touch, described lower sub is positioned at the center pit of scroll chuck, and in the first center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of lower sub respectively; Second center position-limit mechanism and lower endcaps combine installs, scroll chuck in second center position-limit mechanism contacts with the sample fixing bottom outer wall of lower endcaps, the linkage section of lower endcaps is positioned at the center pit of scroll chuck, and in the second center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of lower endcaps linkage section respectively; First helical spring one end is connected with the card extender in the first center position-limit mechanism, the other end is connected with the card extender in the second center position-limit mechanism, the space that lower chain is positioned at the first center position-limit mechanism, the first volute spring, the second center position-limit mechanism surround; 3rd center position-limit mechanism and upper end cap combine installs, scroll chuck in 3rd center position-limit mechanism contacts with the sample fixing bottom outer wall of upper end cap, the linkage section of upper end cap is positioned at the center pit of scroll chuck, and in the 3rd center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of upper end cap linkage section respectively; 4th center position-limit mechanism and testing machine top-loaded seat combine to be installed, scroll chuck in 4th center position-limit mechanism and testing machine top-loaded seated connection touch, described top connection is positioned at the center pit of scroll chuck, and in the 4th center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of top connection respectively; Second helical spring one end is connected with the card extender in the 3rd center position-limit mechanism, the other end is connected with the card extender in the 4th center position-limit mechanism, the space that upper chain is positioned at the 3rd center position-limit mechanism, the second volute spring, the 4th center position-limit mechanism surround.
In the limit-type uniaxial direct tensile sample fixing device of scroll chuck described in the utility model, support member in described first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism and the 4th center position-limit mechanism is four round bars, card extender is annular plate, and four round bars are evenly arranged on the anchor ring of scroll chuck and card extender; Or the support member in described first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism and the 4th center position-limit mechanism be two xsects is the plate body of circular arc, card extender is annular plate, and two plate body symmetries are arranged on the anchor ring of scroll chuck and card extender.
In the limit-type uniaxial direct tensile sample fixing device of scroll chuck described in the utility model, described scroll chuck is hand chuck or air spider or oild chuck.
The utility model has following beneficial effect:
1, owing to being provided with volute spring and Liang Ge center position-limit mechanism in the down clamp of rock sample stationary installation described in the utility model and upper position fixture, thus can not only guarantee that in test, test specimen two ends loading rigidity is consistent, mechanics effect after more effective test rock test peak stress, and can guarantee that in test, helical spring center line overlaps with the center line of testing machine by the scroll chuck in the center position-limit mechanism of down clamp and upper position fixture, avoid the generation of additional eccentric force, not only increase success of the test rate, also help the accuracy improving test result.
2, be the plate body of circular arc because the support member in the first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism and the 4th center position-limit mechanism is four round bars or two xsects, thus when chain is connected with end cap, be convenient to insert web member latch, operate more simple and convenient, improve testing efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the limit-type uniaxial direct tensile sample fixing device of scroll chuck described in the utility model.
Fig. 2 is a kind of structural representation of scroll chuck.
Fig. 3 is the first structural representation (support member is round bar) of the first center position-limit mechanism or the second center position-limit mechanism or the 3rd center position-limit mechanism or the 4th center position-limit mechanism in the limit-type uniaxial direct tensile sample fixing device of scroll chuck described in the utility model.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the second structural representation (support member is arc plate body) of the first center position-limit mechanism or the second center position-limit mechanism or the 3rd center position-limit mechanism or the 4th center position-limit mechanism in the limit-type uniaxial direct tensile sample fixing device of scroll chuck described in the utility model.
Fig. 6 is the vertical view of Fig. 5.
In figure, 1-testing machine bottom-loaded seat, 2-scroll chuck, 2-1-the first pawl disk body, 2-2-the second pawl disk body, 2-3-claw, 2-4-bevel pinion, 2-5-bevel gear wheel, 2-5-1-flat thread, 2-5-2-cone tooth, 3-lower sub, 4-support member, 5-card extender, 6-lower chain, 7-lower latch, 8-lower endcaps, 9-rock sample, 10-upper end cap, 11-upper latch, 12-upper chain, 13-top connection, 14-testing machine top-loaded seat, the 15-the first volute spring, the 16-the second volute spring.
Embodiment
Below by embodiment, the limit-type uniaxial direct tensile sample fixing device of scroll chuck described in the utility model is described further.
In the present embodiment, the limit-type uniaxial direct tensile sample fixing device of scroll chuck as shown in Figure 1, is made up of down clamp and upper position fixture.Described down clamp comprise the lower sub 3 be connected with testing machine bottom-loaded seat 1, fixing sample lower endcaps 8, connect lower chain 6, first volute spring 15, first center position-limit mechanism, the second center position-limit mechanism of lower sub and lower endcaps, lower endcaps 8 is made up of sample fixing and linkage section, and the first volute spring 15 is cylinder measuring flume; Described upper position fixture comprises the top connection 13 be connected with testing machine top-loaded seat 14, the upper end cap 10 of fixing sample, upper chain 12, second volute spring 16 connecting top connection and upper end cap, the 3rd center position-limit mechanism and the 4th center position-limit mechanism, upper end cap 10 is made up of sample fixing and linkage section, and the second volute spring 16 is cylinder measuring flume.
Described first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism are identical with the structure of the 4th center position-limit mechanism, form, as shown in Figure 3, Figure 4 by scroll chuck 2, support member 4 and card extender 5, scroll chuck is hand chuck, its structure as shown in Figure 2, comprise the first pawl disk body 2-1, second pawl disk body 2-2, three claw 2-3, bevel pinion 2-4 and bevel gear wheel 2-5, first pawl disk body 2-1, second pawl disk body 2-2 is annular disk body, their center pit aperture is identical, the one side of bevel gear wheel 2-5 is the cone tooth 2-5-2 engaged with bevel pinion, another side is provided with flat thread 2-5-1, three claw 2-3 are provided with the thread mated with described flat thread 2-5-1, after combination, bevel pinion 2-4, bevel gear wheel 2-5 is positioned at the first pawl disk body 2-1, in the space that second pawl disk body 2-2 surrounds, three claw 2-3 are arranged in three set by the first pawl disk body 2-1 guide grooves in 120 ° of distributions respectively and thread on claw engages with the flat thread 2-5-1 on bevel gear wheel, support member 4 is four round bars, card extender 5 is annular plate, its center pit aperture is identical with the center pit aperture of the second pawl disk body 2-2 with the first pawl disk body 2-1, four round bars are evenly arranged on the anchor ring of the first pawl disk body 2-1 and card extender 5, their one end is connected with card extender 5, and the other end is connected with the first pawl disk body 2-1.
The array mode of each component of down clamp or assembly: the first center position-limit mechanism and testing machine bottom-loaded seat 1 combine to be installed, in first center position-limit mechanism, the second pawl disk body 2-2 of scroll chuck contacts with testing machine bottom-loaded seat 1, described lower sub 3 is positioned at the center pit of the first pawl disk body 2-1 and the second pawl disk body 2-2, and in the first center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of lower sub 3 respectively; Second center position-limit mechanism and lower endcaps 8 combine installs, in second center position-limit mechanism, the second pawl disk body 2-2 of scroll chuck contacts with the sample fixing bottom outer wall of lower endcaps 8, the linkage section of lower endcaps 8 is positioned at the center pit of the first pawl disk body 2-1 and the second pawl disk body 2-2, and in the second center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of lower endcaps linkage section respectively; One end of first volute spring 15 is connected with the card extender in the first center position-limit mechanism, the other end is connected with the card extender in the second center position-limit mechanism, the lower end of lower chain 6 is connected with the lower sub 3 be arranged on testing machine bottom-loaded seat 1, upper end is formed by lower latch 7 and lower endcaps linkage section and removably connects, the space that lower chain 6 is positioned at the first center position-limit mechanism, the first volute spring 15, second center position-limit mechanism surrounds.
The array mode of each component of upper position fixture or assembly: the 3rd center position-limit mechanism and upper end cap 10 combine installs, in 3rd center position-limit mechanism, the second pawl disk body 2-2 of scroll chuck contacts with the sample fixing bottom outer wall of upper end cap 10, the linkage section of upper end cap 10 is positioned at the center pit of the first pawl disk body 2-1 and the second pawl disk body 2-2, and in the 3rd center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of upper end cap linkage section respectively; 4th center position-limit mechanism and testing machine top-loaded seat 14 combine to be installed, in 4th center position-limit mechanism, the second pawl disk body 2-2 of scroll chuck contacts with testing machine top-loaded seat 14, described top connection 13 is positioned at the center pit of the first pawl disk body 2-1 and the second pawl disk body 2-2, and in the 4th center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of top connection 13 respectively; One end of second volute spring 16 is connected with the card extender in the 3rd center position-limit mechanism, the other end is connected with the card extender in the 4th center position-limit mechanism, the upper end of upper chain 12 is connected with the top connection 13 be arranged on testing machine top-loaded seat 14, lower end is formed by upper latch 11 and upper end cap linkage section and removably connects, the space that upper chain 12 is positioned at the 3rd center position-limit mechanism, the second volute spring 16, the 4th center position-limit mechanism surround.
As shown in Figure 1, two ends are bonding with the sample fixing of upper end cap 10 and lower endcaps 8 by high-strength plastic for the mounting means of rock sample 9.
The utility model is not limited to above-described embodiment, such as, described first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism and the 4th center position-limit mechanism can also be the structures shown in Fig. 5, Fig. 6, namely support member 4 is two xsects is the plate body of circular arc, card extender 5 is annular plate, two plate body symmetries are arranged on the anchor ring of the first pawl disk body 2-1 and card extender 5, and their one end is connected with card extender 5, and the other end is connected with the first pawl disk body 2-1.Scroll chuck can be air spider or oild chuck.
Claims (3)
1. the limit-type uniaxial direct tensile sample fixing device of scroll chuck, be made up of down clamp and upper position fixture, described down clamp comprises the lower sub (3) be connected with testing machine bottom-loaded seat (1), the lower endcaps (8) of fixing sample, connect lower chain (6) and first volute spring (15) of lower sub and lower endcaps, lower endcaps (8) is made up of sample fixing and linkage section, described upper position fixture comprises the top connection (13) be connected with testing machine top-loaded seat (14), the upper end cap (10) of fixing sample, connect the upper chain (12) of top connection and upper end cap, upper end cap (10) is made up of sample fixing and linkage section, it is characterized in that down clamp also comprises the first center position-limit mechanism, second center position-limit mechanism, upper position fixture also comprises the second volute spring (16), 3rd center position-limit mechanism and the 4th center position-limit mechanism,
Described first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism are identical with the structure of the 4th center position-limit mechanism, form by scroll chuck (2), support member (4) and card extender (5), one end of support member (4) is connected with card extender (5), and the other end is connected with scroll chuck;
First center position-limit mechanism and testing machine bottom-loaded seat (1) combine to be installed, scroll chuck in first center position-limit mechanism contacts with testing machine bottom-loaded seat (1), described lower sub (3) is positioned at the center pit of scroll chuck, and in the first center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of lower sub (3) respectively; Second center position-limit mechanism and lower endcaps (8) combine installs, scroll chuck in second center position-limit mechanism contacts with the sample fixing bottom outer wall of lower endcaps (8), the linkage section of lower endcaps (8) is positioned at the center pit of scroll chuck, and in the second center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of lower endcaps linkage section respectively; One end of first volute spring (15) is connected with the card extender in the first center position-limit mechanism, the other end is connected with the card extender in the second center position-limit mechanism, the space that lower chain (6) is positioned at the first center position-limit mechanism, the first volute spring (15), the second center position-limit mechanism surround;
3rd center position-limit mechanism and upper end cap (10) combine installs, scroll chuck in 3rd center position-limit mechanism contacts with the sample fixing bottom outer wall of upper end cap (10), the linkage section of upper end cap (10) is positioned at the center pit of scroll chuck, and in the 3rd center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of upper end cap linkage section respectively; 4th center position-limit mechanism and testing machine top-loaded seat (14) combine to be installed, scroll chuck in 4th center position-limit mechanism contacts with testing machine top-loaded seat (14), described top connection (13) is positioned at the center pit of scroll chuck, and in the 4th center position-limit mechanism, three claw free ends of scroll chuck contact with the lateral surface of top connection (13) respectively; One end of second volute spring (16) is connected with the card extender in the 3rd center position-limit mechanism, the other end is connected with the card extender in the 4th center position-limit mechanism, the space that upper chain (12) is positioned at the 3rd center position-limit mechanism, the second volute spring (16), the 4th center position-limit mechanism surround.
2. the limit-type uniaxial direct tensile sample fixing device of scroll chuck according to claim 1, it is characterized in that the support member (4) in the first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism and the 4th center position-limit mechanism is four round bars, card extender (5) is annular plate, and four round bars are evenly arranged on the anchor ring of scroll chuck (2) and card extender (5).
3. the limit-type uniaxial direct tensile sample fixing device of scroll chuck according to claim 1, the support member (4) that it is characterized in that in the first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism and the 4th center position-limit mechanism is two xsects is the plate body of circular arc, card extender (5) is annular plate, and two plate body symmetries are arranged on the anchor ring of scroll chuck (2) and card extender (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520092817.6U CN204389295U (en) | 2015-02-09 | 2015-02-09 | The limit-type uniaxial direct tensile sample fixing device of scroll chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520092817.6U CN204389295U (en) | 2015-02-09 | 2015-02-09 | The limit-type uniaxial direct tensile sample fixing device of scroll chuck |
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| Publication Number | Publication Date |
|---|---|
| CN204389295U true CN204389295U (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520092817.6U Withdrawn - After Issue CN204389295U (en) | 2015-02-09 | 2015-02-09 | The limit-type uniaxial direct tensile sample fixing device of scroll chuck |
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| CN (1) | CN204389295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677728A (en) * | 2015-02-09 | 2015-06-03 | 四川大学 | Three-jaw chuck limiting type rock sample fixing device for direct tensile testing |
-
2015
- 2015-02-09 CN CN201520092817.6U patent/CN204389295U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677728A (en) * | 2015-02-09 | 2015-06-03 | 四川大学 | Three-jaw chuck limiting type rock sample fixing device for direct tensile testing |
| CN104677728B (en) * | 2015-02-09 | 2017-04-05 | 四川大学 | The limit-type rock sample fixing device of scroll chuck of direct tensile test |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150610 Effective date of abandoning: 20170405 |