CN204389291U - Tension and compression cyclic test spring retainer formula sample fixing device - Google Patents
Tension and compression cyclic test spring retainer formula sample fixing device Download PDFInfo
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- CN204389291U CN204389291U CN201520091138.7U CN201520091138U CN204389291U CN 204389291 U CN204389291 U CN 204389291U CN 201520091138 U CN201520091138 U CN 201520091138U CN 204389291 U CN204389291 U CN 204389291U
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Abstract
Tension and compression cyclic test spring retainer formula sample fixing device, 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 center position-limit mechanism, the second center position-limit mechanism and the first hydraulic 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 3rd center position-limit mechanism, the 4th center position-limit mechanism and the second hydraulic mechanism; Each center position-limit mechanism is by spring retainer assembly, support member and card extender composition, and spring retainer assembly comprises annular bearing, three screw rods, three with external thread and the swivel nut of internal thread, three limit spring and three limit bodies; The annular oil cylinder that first hydraulic mechanism, the second hydraulic mechanism include toroidal piston and combine with toroidal piston.
Description
Technical field
The utility model belongs to device hard brittle material being carried out to mechanical property test, the rock sample stationary installation that particularly a kind of uniaxial direct tensile and compression cycle are supporting with testing machine in testing.
Background technology
To rock sample carry out tension and compression cyclic load alternately test be understand rock to bear the important means of drawing, pressing cyclic load ability, but in rock test at present, due to the structural limitations of sample fixing device, only Axial compression tests or one directional tensile test can be carried out.
In one directional 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 and labour intensity is comparatively large, and the rock low to stretching load-bearing capacity also very easily causes test specimen damage and cause testing.
In Axial compression tests, test specimen is directly placed in up and down between bearing plate of testing machine, test specimen only can bear compression load, can not apply uniaxial direct tensile load to test specimen, thus can not carry out the Cyclic Loading Test that compression and tension replaces.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, tension and compression cyclic test spring retainer formula sample fixing device is provided, to realize the tension and compression cyclic load alternately test of rock sample, and to guarantee in test that the center line of rock sample stationary installation overlaps with the center line of testing machine and to load rigidity consistent at test specimen two ends, make the connection of chain and end cap convenient, laborsaving, improve effect.
Tension and compression cyclic test spring retainer formula sample fixing device 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 center position-limit mechanism, the second center position-limit mechanism and the first hydraulic 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 3rd center position-limit mechanism, the 4th center position-limit mechanism and the second hydraulic 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 spring retainer assembly, support member and card extender; Described spring retainer assembly comprises annular bearing, three screw rods, three with external thread and the swivel nut of internal thread, three limit spring and three limit bodies, the wall of described annular bearing is provided with three screws, the center line of three screws is all by the center of annular bearing, and the angle between the center line of adjacent screw is 120 °, the internal thread of three screws and the external thread of swivel nut match, the internal thread of described swivel nut and the external thread of described screw rod match, described limit body is provided with screw, and the internal thread of this screw and the external thread of screw rod match; One end of support member is connected with card extender, the other end is connected with the annular bearing in spring retainer assembly, three swivel nuts are arranged in three screws of annular bearing respectively, three screw rods combine with three swivel nuts respectively, three limit bodies are arranged on three screw rods respectively, three limit spring are set on three screw rods, and one end contacts with the limit body be arranged on screw rod, the contact internal walls of the other end and annular bearing; The structure of described first hydraulic mechanism, the second hydraulic mechanism is identical, the annular oil cylinder including toroidal piston and combine with toroidal piston; First center position-limit mechanism and testing machine bottom-loaded seat combine to be installed, in first center position-limit mechanism, the annular bearing of spring limit assembly and testing machine bottom-loaded seated connection touch, described lower sub is positioned at the center pit of described annular bearing, and in the first center position-limit mechanism, three screw rod one end of spring limit assembly contact with the lateral surface of lower sub respectively; Second center position-limit mechanism and lower endcaps combine installs, in second center position-limit mechanism, the annular bearing of spring limit assembly contacts with the sample fixing bottom outer wall of lower endcaps, the linkage section of lower endcaps is positioned at the center pit of described annular bearing, and in the second center position-limit mechanism, three screw rod one end of spring limit assembly contact with the lateral surface of lower endcaps linkage section respectively; Described first hydraulic mechanism is between the first center position-limit mechanism, the second center position-limit mechanism, the annular oil cylinder of the first hydraulic mechanism is connected with the card extender in the first center position-limit mechanism, the toroidal piston of the first hydraulic mechanism is connected with the card extender in the second center position-limit mechanism, or the annular oil cylinder of the first hydraulic mechanism is connected with the card extender in the second center position-limit mechanism, the toroidal piston of the first hydraulic mechanism is connected with the card extender in the first center position-limit mechanism; The space that described lower chain is positioned at the first center position-limit mechanism, the first hydraulic mechanism, the second center position-limit mechanism surround; 3rd center position-limit mechanism and upper end cap combine installs, in 3rd center position-limit mechanism, the annular bearing of spring limit assembly 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 described annular bearing, and in the 3rd center position-limit mechanism, three screw rod one end of spring limit assembly 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, in 4th center position-limit mechanism, the annular bearing of spring limit assembly and testing machine top-loaded seated connection touch, described top connection is positioned at the center pit of described annular bearing, and in the 4th center position-limit mechanism, three screw rod one end of spring limit assembly contact with the lateral surface of top connection respectively; Described second hydraulic mechanism is between the 3rd center position-limit mechanism, the 4th center position-limit mechanism, the annular oil cylinder of the second hydraulic mechanism is connected with the card extender in the 3rd center position-limit mechanism, the toroidal piston of the second hydraulic mechanism is connected with the card extender in the 4th center position-limit mechanism, or the annular oil cylinder of the second hydraulic mechanism is connected with the card extender in the 4th center position-limit mechanism, the toroidal piston of the second hydraulic mechanism is connected with the card extender in the 3rd center position-limit mechanism; The space that described upper chain is positioned at the 3rd center position-limit mechanism, the second hydraulic mechanism, the 4th center position-limit mechanism surround.
In tension and compression cyclic test spring retainer formula sample fixing device 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 annular bearing 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 annular bearing and card extender.
The utility model has following beneficial effect:
1, rock sample stationary installation described in the utility model eliminates compression helical spring, be provided with hydraulic mechanism, the pressure provided due to hydraulic mechanism and rigidity are far above volute spring, thus the tension and compression cyclic load alternately test of rock can be realized, overcome in the test of current rock and only can carry out the deficiency of Uniaxial Compression or tension test, the rocks in direct tension in perfect unidirectional loading and the combined test method of compression load cycle alternation.
2, owing to being provided with Liang Ge center position-limit mechanism and a hydraulic 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, the center line of rock sample stationary installation overlaps with the center line of testing machine by the spring retainer assembly in the center position-limit mechanism of down clamp and upper position fixture, avoid the generation of additional eccentric force, be conducive to the accuracy improving test result.
3, 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; it is simple to operate, convenient to mount and dismount; be conducive to the rock integrality before testing protecting tensile strength low simultaneously, improve test success ratio.
Accompanying drawing explanation
Fig. 1 is the structural representation of tension and compression cyclic test spring retainer formula sample fixing device described in the utility model.
Fig. 2 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 tension and compression cyclic test spring retainer formula sample fixing device described in the utility model, and described center position-limit mechanism is in off working state.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 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 tension and compression cyclic test spring retainer formula sample fixing device described in the utility model, and described center position-limit mechanism is in running order.
Fig. 5 is the vertical view of Fig. 4.
Fig. 6 is the structural representation of the first hydraulic mechanism or the first hydraulic mechanism in tension and compression cyclic test spring retainer formula sample fixing device described in the utility model.
Fig. 7 is the vertical view of Fig. 6.
In figure, 1-testing machine bottom-loaded seat, 2-spring retainer assembly, 2-1-annular bearing, 2-2-screw rod, 2-3-swivel nut, 2-4-limit spring, 2-5-limit body, 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, 15-toroidal piston, 16-annular oil cylinder, 17-piston limit ring, 18-O-ring seal, 19-petroleum pipeline, 20-operation valve, 21-tensimeter.
Embodiment
Below by embodiment, tension and compression cyclic test spring retainer formula sample fixing device described in the utility model is described further.
In the present embodiment, tension and compression cyclic test spring retainer formula sample fixing device as shown in Figure 1, is 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, lower chain 6, the first center position-limit mechanism connecting lower sub and lower endcaps, the second center position-limit mechanism and the first hydraulic mechanism, and 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, the upper chain 12 connecting top connection and upper end cap, the 3rd center position-limit mechanism, the 4th center position-limit mechanism and the second hydraulic mechanism, and upper end cap 10 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, as shown in Figure 2 and Figure 3 by spring retainer assembly 2, support member 4 and card extender 5, spring retainer assembly 2 comprises annular bearing 2-1, three screw rod 2-2, three swivel nut 2-3 with external thread and internal thread, three limit spring 2-4 and three limit body 2-5, the wall of described annular bearing is provided with three screws, the center line of three screws is all by the center of annular bearing, and the angle between the center line of adjacent screw is 120 °, the internal thread of three screws and the external thread of swivel nut 2-3 match, the internal thread of described swivel nut 2-3 and the external thread of described screw rod 2-2 match, described limit body 2-5 is the nut matched with the external thread of screw rod 2-2, described limit spring 2-4 is cylinder measuring flume, support member 4 is four round bars, card extender 5 is annular plate, its external diameter is identical with annular bearing 2-1 with endoporus aperture, four round bars are evenly arranged on the anchor ring of annular bearing 2-1 and card extender 5, their one end is connected with card extender 5, and the other end is connected with the annular bearing 2-1 in spring retainer assembly, three swivel nut 2-3 are arranged in three screws of annular bearing respectively, three screw rod 2-2 combine with three swivel nuts respectively, three limit body 2-5 are arranged on three screw rods respectively, three limit spring 2-4 are set on three screw rods, and one end contacts with the limit body 2-5 be arranged on screw rod, the contact internal walls of the other end and annular bearing 2-1.
Described first hydraulic mechanism, the structure of the second hydraulic mechanism is as Fig. 6, shown in Fig. 7, include toroidal piston 15, annular oil cylinder 16, piston limit ring 17 and O-ring seal 18, one end of toroidal piston 15 is inserted in the annular cavity of annular oil cylinder 16, the annular cavity blind end of annular oil cylinder 16 is provided with the petroleum pipeline 19 communicated with this cavity, described petroleum pipeline 19 is provided with operation valve 20 and tensimeter 21, piston limit ring 17 is arranged on the annular cavity openend of annular oil cylinder 16, O-ring seal 18 is arranged on the end and piston limit ring 17 that toroidal piston 15 inserts annular cavity one end respectively.
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 annular bearing of spring limit assembly contacts with testing machine bottom-loaded seat 1, described lower sub 3 is positioned at the center pit of described annular bearing, and in the first center position-limit mechanism, three screw rod one end of spring limit assembly 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 annular bearing of spring limit assembly 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 described annular bearing, and in the second center position-limit mechanism, three screw rod one end of spring limit assembly contact with the lateral surface of lower endcaps linkage section respectively; First hydraulic mechanism is between the first center position-limit mechanism, the second center position-limit mechanism, and the annular oil cylinder 16 of the first hydraulic mechanism is connected with the card extender 5 in the first center position-limit mechanism, the toroidal piston 15 of the first hydraulic mechanism is connected with the card extender 5 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 hydraulic mechanism, the second center position-limit mechanism surround.
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 annular bearing of spring limit assembly 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 described annular bearing, and in the 3rd center position-limit mechanism, three screw rod one end of spring limit assembly 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 annular bearing of spring limit assembly contacts with testing machine top-loaded seat 14, described top connection 13 is positioned at the center pit of described annular bearing, and in the 4th center position-limit mechanism, three screw rod one end of spring limit assembly contact with the lateral surface of top connection 13 respectively; Second hydraulic mechanism is between the 3rd center position-limit mechanism, the 4th center position-limit mechanism, and the annular oil cylinder 16 of the second hydraulic mechanism is connected with the card extender 5 in the 3rd center position-limit mechanism, the toroidal piston 15 of the second hydraulic mechanism is connected with the card extender 5 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 hydraulic mechanism, 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.
It should be noted that, screw rod 2-2 in spring retainer assembly 2, swivel nut 2-3, limit spring 2-4, the mounting means of limit body 2-5 is: first combined with three screw rod 2-2 respectively by three swivel nut 2-3, then three screw rod 2-2 are inserted in three screws of annular bearing 2-1 respectively, three limit spring 2-4 being enclosed within respectively three screw rods is positioned in portion's section of annular bearing center pit again, three limit body 2-5 being arranged on respectively three screw rods is positioned in portion's section of annular bearing center pit, by regulating three limit bodies, three limit bodies are made all to be positioned at the end equidistant part of three screw rods in portion's section of ring body, three limit spring are in identical compressive state, by three swivel nuts, three screw rods are fixing on annular bearing again.
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. 4, Fig. 5, 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 annular bearing 2-1 and card extender 5, their one end is connected with card extender 5, and the other end is connected with the annular bearing 2-1 in spring retainer assembly.
Claims (3)
1. a tension and compression cyclic test spring retainer formula sample fixing device, 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 the lower chain (6) 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, first hydraulic mechanism, upper position fixture also comprises the 3rd center position-limit mechanism, 4th center position-limit mechanism and the second hydraulic mechanism,
The structure of described first center position-limit mechanism, the second center position-limit mechanism, the 3rd center position-limit mechanism, the 4th center position-limit mechanism is identical, forms by spring retainer assembly (2), support member (4) and card extender (5), described spring retainer assembly (2) comprises annular bearing (2-1), three screw rods (2-2), three swivel nuts (2-3) with external thread and internal thread, three limit spring (2-4) and three limit bodies (2-5), the wall of described annular bearing is provided with three screws, the center line of three screws is all by the center of annular bearing, and the angle between the center line of adjacent screw is 120 °, the external thread of the internal thread of three screws and swivel nut (2-3) matches, the internal thread of described swivel nut (2-3) and the external thread of described screw rod (2-2) match, described limit body (2-5) is provided with screw, the external thread of the internal thread of this screw and screw rod (2-2) matches, one end of support member (4) is connected with card extender (5), the other end is connected with the annular bearing (2-1) in spring retainer assembly, three swivel nuts (2-3) are arranged in three screws of annular bearing respectively, three screw rods (2-2) are combined with three swivel nuts respectively, three limit bodies (2-5) are arranged on three screw rods respectively, three limit spring (2-4) are set on three screw rods, and one end contacts with the limit body be arranged on screw rod, the contact internal walls of the other end and annular bearing (2-1),
The structure of described first hydraulic mechanism, the second hydraulic mechanism is identical, the annular oil cylinder (16) including toroidal piston (15) and combine with toroidal piston;
First center position-limit mechanism and testing machine bottom-loaded seat (1) combine to be installed, in first center position-limit mechanism, the annular bearing of spring limit assembly contacts with testing machine bottom-loaded seat (1), described lower sub (3) is positioned at the center pit of described annular bearing, and in the first center position-limit mechanism, three screw rod one end of spring limit assembly 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 annular bearing of spring limit assembly 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 described annular bearing, and in the second center position-limit mechanism, three screw rod one end of spring limit assembly contact with the lateral surface of lower endcaps linkage section respectively; Described first hydraulic mechanism is between the first center position-limit mechanism, the second center position-limit mechanism, the annular oil cylinder (16) of the first hydraulic mechanism is connected with the card extender in the first center position-limit mechanism, the toroidal piston (15) of the first hydraulic mechanism is connected with the card extender in the second center position-limit mechanism, or the annular oil cylinder (16) of the first hydraulic mechanism is connected with the card extender in the second center position-limit mechanism, the toroidal piston (15) of the first hydraulic mechanism is connected with the card extender in the first center position-limit mechanism; The space that described lower chain (6) is positioned at the first center position-limit mechanism, the first hydraulic mechanism, the second center position-limit mechanism surround;
3rd center position-limit mechanism and upper end cap (10) combine installs, in 3rd center position-limit mechanism, the annular bearing of spring limit assembly 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 described annular bearing, and in the 3rd center position-limit mechanism, three screw rod one end of spring limit assembly 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 annular bearing of spring limit assembly contacts with testing machine top-loaded seat (14), described top connection (13) is positioned at the center pit of described annular bearing, and in the 4th center position-limit mechanism, three screw rod one end of spring limit assembly contact with the lateral surface of top connection (13) respectively;
Described second hydraulic mechanism is between the 3rd center position-limit mechanism, the 4th center position-limit mechanism, the annular oil cylinder (16) of the second hydraulic mechanism is connected with the card extender in the 3rd center position-limit mechanism, the toroidal piston (15) of the second hydraulic mechanism is connected with the card extender in the 4th center position-limit mechanism, or the annular oil cylinder (16) of the second hydraulic mechanism is connected with the card extender in the 4th center position-limit mechanism, the toroidal piston (15) of the second hydraulic mechanism is connected with the card extender in the 3rd center position-limit mechanism; The space that described upper chain (12) is positioned at the 3rd center position-limit mechanism, the second hydraulic mechanism, the second volute spring (16), the 4th center position-limit mechanism surround.
2. tension and compression cyclic test spring retainer formula sample fixing device 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 annular bearing (2-1) and card extender (5).
3. tension and compression cyclic test spring retainer formula sample fixing device 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 annular bearing (2-1) and card extender (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520091138.7U CN204389291U (en) | 2015-02-09 | 2015-02-09 | Tension and compression cyclic test spring retainer formula sample fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520091138.7U CN204389291U (en) | 2015-02-09 | 2015-02-09 | Tension and compression cyclic test spring retainer formula sample fixing device |
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| Publication Number | Publication Date |
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| CN204389291U true CN204389291U (en) | 2015-06-10 |
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|---|---|---|---|
| CN201520091138.7U Withdrawn - After Issue CN204389291U (en) | 2015-02-09 | 2015-02-09 | Tension and compression cyclic test spring retainer formula sample fixing device |
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| CN (1) | CN204389291U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697852A (en) * | 2015-02-09 | 2015-06-10 | 四川大学 | Rock sample fixing device for spring component limiting tension-compression cycling test |
-
2015
- 2015-02-09 CN CN201520091138.7U patent/CN204389291U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697852A (en) * | 2015-02-09 | 2015-06-10 | 四川大学 | Rock sample fixing device for spring component limiting tension-compression cycling test |
| CN104697852B (en) * | 2015-02-09 | 2017-04-12 | 四川大学 | Rock sample fixing device for spring component limiting tension-compression cycling test |
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| 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: 20170412 |