CN219391584U - Clamp for testing low-temperature impact brittleness of O-shaped ring - Google Patents

Clamp for testing low-temperature impact brittleness of O-shaped ring Download PDF

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Publication number
CN219391584U
CN219391584U CN202223003735.9U CN202223003735U CN219391584U CN 219391584 U CN219391584 U CN 219391584U CN 202223003735 U CN202223003735 U CN 202223003735U CN 219391584 U CN219391584 U CN 219391584U
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China
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main body
ring
clamp
temperature impact
shaped ring
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CN202223003735.9U
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安东澜
李永亮
韦明
马丽
贺华
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Xian Flight Automatic Control Research Institute of AVIC
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Xian Flight Automatic Control Research Institute of AVIC
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The application provides a anchor clamps of test O type circle low temperature impact friability, anchor clamps include: the clamp comprises a clamp main body, wherein one end of the clamp main body is provided with a first pin hole, and the other end of the clamp main body is movably provided with a lower hook; the top clamping plate is provided with a second pin hole and is used for fixing one end of the O-shaped ring; the top hanger pin sequentially passes through the first pin hole and the second pin hole; when the low-temperature impact test is carried out, one end of the O-shaped ring is hung on the lower hook, the other end of the O-shaped ring is hung on the top hook pin, and the other end of the O-shaped ring is fixed by the top clamping plate; the application provides an available O type circle anchor clamps of standard sample low temperature brittleness test machine, but the low temperature brittleness of access test machine direct measurement O type circle.

Description

Clamp for testing low-temperature impact brittleness of O-shaped ring
Technical Field
The application belongs to the technical field of mechanical property testing, and particularly relates to a clamp for testing low-temperature impact brittleness of an O-shaped ring.
Background
The O-shaped rubber ring is widely applied to dynamic sealing and static sealing structures, and the performance of the O-shaped rubber ring directly influences the service life of the structure. The properties of the rubber material are affected by different additives and different vulcanization processes.
The O-ring material hardens at low temperatures, so the low temperature brittleness test is one of the important indicators for its performance. The low temperature brittleness test can be used to infer the minimum use temperature of rubber materials by measuring their impact resistance below the glass transition temperature.
The current low-temperature brittleness test fixture can only be used for clamping long-strip-shaped rubber samples, and cannot clamp O-shaped rings for low-temperature brittleness test.
Therefore, it is desirable to develop a special fixture that can directly test the low temperature brittleness of different sized O-rings.
Disclosure of Invention
To above-mentioned technical problem, the present application provides a test O type circle low temperature impact brittleness's anchor clamps, anchor clamps include:
the clamp comprises a clamp main body, wherein one end of the clamp main body is provided with a first pin hole, and the other end of the clamp main body is movably provided with a lower hook;
the top clamping plate is provided with a second pin hole and is used for fixing one end of the O-shaped ring;
the top hanger pin sequentially passes through the first pin hole and the second pin hole;
when the low-temperature impact test is carried out, one end of the O-shaped ring is hung on the lower hook, the other end of the O-shaped ring is hung on the top hook pin, and the other end of the O-shaped ring is fixed by the top clamping plate.
Preferably, the jig main body includes:
the top of the main body comprises a concave groove, and the top clamping plate is arranged in the concave groove and is fixed through a bolt so as to press one end of the O-shaped ring;
the bottom of the main body is connected with the top of the main body; wherein the hook is movably arranged on the bottom of the main body.
Preferably, the main body bottom includes:
the connecting plate is provided with a strip-shaped through hole;
one end of the lower hanging plate is movably arranged in the strip-shaped through hole, and the other end of the lower hanging plate is provided with a third pin hole; wherein, the third pinhole is used for installing the couple down.
Preferably, one end of the lower hanging plate is provided with a mounting hole; the main body bottom further includes:
the locking bolt sequentially passes through the mounting hole and the strip-shaped through hole, and can move along the strip-shaped through hole; the bolts are used for fixing the lower hanging plate to the connecting plate.
Preferably, the clamp body further comprises a top connection post;
the top connecting column is connected with a nut, and the clamp is connected with the testing instrument through the top connecting column and locked by the nut.
Preferably, both the top hanger pin and the bottom hanger are mated with the O-ring.
Preferably, the top of the main body is provided with a bonding surface, and the O-shaped ring can be bonded on the bonding surface; the surface of the lower hanging plate and the joint surface are positioned on the same plane.
The beneficial technical effect of this application:
the application provides an available O type circle anchor clamps of standard sample low temperature brittleness test machine can directly survey the low temperature brittleness of O type circle on standard test machine.
Drawings
FIG. 1 is a schematic diagram of a fixture for testing low-temperature impact brittleness of an O-ring according to an embodiment of the present application;
FIG. 2 is a schematic diagram II of a fixture for testing low-temperature impact brittleness of an O-ring according to an embodiment of the present application;
FIG. 3 is a schematic diagram III of a fixture for testing low-temperature impact brittleness of an O-ring according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a fixture for testing low-temperature impact brittleness of an O-ring according to an embodiment of the present disclosure;
wherein: 1-bonding surface, 11-connecting plate, 111-strip through holes, 12-main body top, 2-lower hanging plate and 21-lower hooks; 121-top clamping plate, 122-top hanger pin, 124-bolt, 13-top connecting column; 123-first pin hole.
Detailed Description
In order to overcome the defects of the existing clamp, the low-temperature brittleness of the O-shaped ring with different sizes is directly measured by taking the O-shaped ring as a sample, and a good evaluation method is further established for engineering application.
Referring to fig. 1-4, in an embodiment of the present application, a fixture for testing low temperature impact brittleness of an O-ring is provided, comprising: a clamp body and a lower hanging plate.
Wherein, the clamp body includes a body bottom and a body top. The connecting plate at the bottom of the main body is provided with a strip-shaped through hole. The top of the main body is inverted concave from the side view, and a movable top clamping plate is arranged in the main body. A hole is respectively formed on the left and right sides of the front surface of the top of the main body and is used for screwing in a fixing bolt so as to control the position of the top clamping plate. A hole is also formed in the front center of the top of the main body and the center of the top clamping plate, and a top hanger pin with the diameter slightly smaller than that of the hole can be inserted through the hole. The top surface of the top of the main body is provided with a threaded column and a nut which are used for being connected with a testing machine. One end of the lower hanging plate is provided with a hole, and after the proper height of the strip-shaped through hole on the bottom of the main body is selected, the lower hanging plate is connected with the bottom of the main body by bolts and nuts, and the lower hanging plate and the bottom of the main body are kept vertical. The right side of the lower hanging plate is provided with a convex lower hanging hook. The lower hook and the top hook pin are used for hanging the two ends of the O-shaped ring.
In one possible implementation, there are several top hanger pins of different diameters, and several bottom hanger plates with lower hangers of different diameters, to meet the test requirements of different sizes of O-rings.
In one possible implementation, the sum of the thicknesses of the connection plate and the lower link plate is equal to the thickness of the clamp body. And in the front view direction, the lower hook and the top hook pin are on the same vertical surface, so that the O-shaped ring is not stressed by lateral force when being clamped and hung.
In one possible implementation, depending on the size of the impact head, the width of the clamp body should be sufficient so that the underside of the body bottom does not collide with the impact head as the impact test is performed.
In other embodiments of the present application, as shown in FIGS. 1-3, a fixture for testing low temperature impact brittleness of an O-ring, comprising: a clamp body and a lower hanging plate 2. Wherein the clamp body includes a body bottom and a body top 12. The connecting plate 11 at the bottom of the main body is provided with a strip-shaped through hole 111. The body top 12 is inverted "concave" in shape from a lateral perspective, with a movable top cleat 121 therein. Holes are formed in the right and left sides of the front surface of the body top 12 for screwing in the fixing bolts 124 to control the position of the top clamping plate 121.
The center of the front face of the top 12 of the main body and the center of the top clamping plate are also provided with first pin holes 123, and a top hanger pin 122 with a diameter slightly smaller than that of the holes can be inserted through the first pin holes. The top surface of the body top 12 has a threaded post and nut 13 for connection to a testing machine. One end of the lower hanging plate 2 is provided with a hole, and after the proper height of the strip-shaped through hole on the bottom of the main body is selected, the lower hanging plate is connected with the bottom of the main body by bolts and nuts, and the lower hanging plate and the bottom of the main body are kept vertical. The right side of the lower hanging plate is provided with a convex lower hanging hook 21. The lower hanger 21 and the top hanger pin 122 are used to hang the two ends of the O-ring.
When the clamp is used, the clamp is firstly arranged on a testing machine through the nut 13, the top hook pin 122 is taken out, the two fixing bolts 124 are unscrewed, the O-shaped ring is put into the top 12 of the main body, the top hook pin 122 is inserted to fix the O-shaped ring, after the proper pre-stretching length is calculated, the lower hanging plate 2 is fixed on the bottom of the main body through the bolt and the nut, and the other end of the O-shaped ring is hung on the lower hanging hook 21, so that the hanging of the O-shaped ring is completed. At this time, the two fixing bolts 124 are tightened, and the top clamping plate 121 presses the O-ring, thereby completing the clamping of the top of the O-ring. The bottom of the O-shaped ring is still in a free hanging state, so that the test requirement is met.
The fixture can be used for directly measuring the low-temperature brittleness of the O-shaped ring. When the sample is loaded, the pre-stretching length of the O-shaped ring and the diameters of the upper hook and the lower hook can be changed according to the characteristics of the sample. The bottom of the sample still maintains a free hanging state, thereby meeting the impact test requirement. The fixture is simple to process, low in cost and capable of meeting the test requirements of various O-shaped rings.

Claims (7)

1. A fixture for testing low temperature impact brittleness of an O-ring, the fixture comprising:
the clamp comprises a clamp main body, wherein one end of the clamp main body is provided with a first pin hole, and the other end of the clamp main body is movably provided with a lower hook;
the top clamping plate is provided with a second pin hole and is used for fixing one end of the O-shaped ring;
the top hanger pin sequentially passes through the first pin hole and the second pin hole;
when the low-temperature impact test is carried out, one end of the O-shaped ring is hung on the lower hook, the other end of the O-shaped ring is hung on the top hook pin, and the other end of the O-shaped ring is fixed by the top clamping plate.
2. The fixture for testing the low-temperature impact brittleness of the O-ring as set forth in claim 1, wherein: the clamp body includes:
the top of the main body comprises a concave groove, and the top clamping plate is arranged in the concave groove and is fixed through a bolt so as to press one end of the O-shaped ring;
the bottom of the main body is connected with the top of the main body; wherein the hook is movably arranged on the bottom of the main body.
3. The fixture for testing the low-temperature impact brittleness of the O-ring as set forth in claim 2, wherein: the main body bottom includes:
the connecting plate is provided with a strip-shaped through hole;
one end of the lower hanging plate is movably arranged in the strip-shaped through hole, and the other end of the lower hanging plate is provided with a third pin hole; wherein, the third pinhole is used for installing the couple down.
4. A fixture for testing O-ring low temperature impact brittleness as set forth in claim 3, wherein: one end of the lower hanging plate is provided with a mounting hole; the main body bottom further includes:
the locking bolt sequentially passes through the mounting hole and the strip-shaped through hole, and can move along the strip-shaped through hole; the bolts are used for fixing the lower hanging plate to the connecting plate.
5. The fixture for testing the low-temperature impact brittleness of the O-ring as set forth in claim 1, wherein: the clamp body further comprises a top connection post;
the top connecting column is connected with a nut, and the clamp is connected with the testing instrument through the top connecting column and locked by the nut.
6. The fixture for testing the low-temperature impact brittleness of the O-ring as set forth in claim 1, wherein: the top hanger pin and the lower hanger are matched with the O-shaped ring.
7. A fixture for testing O-ring low temperature impact brittleness as set forth in claim 3, wherein: the top of the main body is provided with a bonding surface, and the O-shaped ring can be bonded on the bonding surface; the surface of the lower hanging plate and the joint surface are positioned on the same plane.
CN202223003735.9U 2022-11-11 2022-11-11 Clamp for testing low-temperature impact brittleness of O-shaped ring Active CN219391584U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223003735.9U CN219391584U (en) 2022-11-11 2022-11-11 Clamp for testing low-temperature impact brittleness of O-shaped ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223003735.9U CN219391584U (en) 2022-11-11 2022-11-11 Clamp for testing low-temperature impact brittleness of O-shaped ring

Publications (1)

Publication Number Publication Date
CN219391584U true CN219391584U (en) 2023-07-21

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ID=87194587

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223003735.9U Active CN219391584U (en) 2022-11-11 2022-11-11 Clamp for testing low-temperature impact brittleness of O-shaped ring

Country Status (1)

Country Link
CN (1) CN219391584U (en)

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