CN209841534U - Universal testing machine clamp - Google Patents
Universal testing machine clamp Download PDFInfo
- Publication number
- CN209841534U CN209841534U CN201920290472.3U CN201920290472U CN209841534U CN 209841534 U CN209841534 U CN 209841534U CN 201920290472 U CN201920290472 U CN 201920290472U CN 209841534 U CN209841534 U CN 209841534U
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- wedge
- clamping block
- shaped clamping
- shaped
- shaped groove
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- 238000012360 testing method Methods 0.000 title claims description 10
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003733 fiber-reinforced composite Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009864 tensile test Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a universal tester clamp, which comprises a clamp body internally provided with a wedge-shaped groove, wherein a first wedge-shaped clamping block and a second wedge-shaped clamping block are connected in the wedge-shaped groove in a sliding way; the upper parts of the first wedge-shaped clamping block and the second wedge-shaped clamping block are provided with clamping sliding grooves, the upper part of the clamp body is in threaded connection with a pressing rod, and one end of the pressing rod, which extends into the wedge-shaped groove, is provided with a push plate; a cover plate is arranged at an opening on one side of the wedge-shaped groove on the clamp body, and a limiting plate is arranged at an opening on the other side of the wedge-shaped groove; a support is rotatably connected between the limiting plate and the cover plate in the wedge-shaped groove; an avoidance groove for avoiding the supporting rod is arranged on the mutually clamped surface of the first wedge-shaped clamping block and the second wedge-shaped clamping block; a worm wheel is installed at one end of the supporting rod, which extends out of the cover plate, and a worm is rotatably connected to the cover plate; this anchor clamps are through winding banded tensile sample rethread on the bracing piece tightly, can effectively prevent the emergence of the phenomenon of skidding, have improved the accuracy of experimental result greatly.
Description
Technical Field
The utility model relates to an universal tester technical field especially relates to an anchor clamps suitable for carry out centre gripping sample among tensile test to higher strength and flexible ribbon fiber reinforced composite.
Background
The tensile breaking strength of the fiber reinforced composite material is tested by using a universal testing machine, when the traditional clamp clamps the ribbon fiber reinforced composite material with higher strength and bendable, the material can deform in the stretching process, so that the clamping force of the clamp is insufficient, the stretching material is caused to slip, and the reliability and accuracy of an experimental result are influenced. The utility model discloses a utility model application number 201621231621.1 discloses a tensile test machine anchor clamps, tensile sample can penetrate from the gap of right wedge clamp splice and middle splint in the use, pass the gap between middle cylinder upper end and the wedge clamp splice circular recess, tensile sample's end is pressed from both sides tightly through left wedge clamp splice and middle splint, this anchor clamps have increased the frictional force and the bending tension force that are provided for the sample by middle cylinder than ordinary anchor clamps and have improved the clamp force, but still can take place the phenomenon of skidding to the great sample of deflection ratio in tensile process, make the accuracy of experimental result reduce.
SUMMERY OF THE UTILITY MODEL
A primary object of the utility model is to provide an universal testing machine anchor clamps, it can carry out tensile test to higher intensity and flexible ribbon fiber reinforced composite, and can not take place the accuracy that the phenomenon of skidding has improved the experimental result greatly.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a universal testing machine clamp comprises a clamp body, wherein a wedge-shaped groove is formed in the clamp body, and a first wedge-shaped clamping block and a second wedge-shaped clamping block which are matched with each other and used for clamping a sample are connected in the wedge-shaped groove in a sliding mode; clamping sliding grooves which are opposite in position are formed in the upper portions of the first wedge-shaped clamping block and the second wedge-shaped clamping block, a pressing rod with one end extending into the wedge-shaped groove is in threaded connection with the upper portion of the clamp body, and a pushing plate which is matched with the clamping sliding grooves and used for driving the first wedge-shaped clamping block and the second wedge-shaped clamping block to move up and down is arranged at one end, extending into the wedge-shaped groove, of the pressing rod; a cover plate is arranged at an opening on one side of the wedge-shaped groove on the clamp body, and a limiting plate is arranged at an opening on the other side of the wedge-shaped groove; a support rod is rotatably connected between the limiting plate and the cover plate in the wedge-shaped groove and is positioned in the middle of the wedge-shaped groove; an avoidance groove for avoiding the supporting rod is arranged on the mutually clamped surface of the first wedge-shaped clamping block and the second wedge-shaped clamping block; the one end that the bracing piece stretches out the apron is installed the worm wheel, be connected with through the support rotation on the apron and be used for driving worm wheel pivoted worm.
According to the technical scheme, when the universal tester clamp works, a strip-shaped tensile sample extends into the wedge-shaped groove from a position between the first wedge-shaped clamping block and the second wedge-shaped clamping block and is wound on the supporting rod, then the worm is rotated to drive the worm wheel meshed with the worm to rotate, the worm wheel drives the supporting rod to rotate to wind the strip-shaped tensile sample on the supporting rod in a multi-layer mode, and finally the first wedge-shaped clamping block and the second wedge-shaped clamping block are pushed to move downwards through the rotating pressure rod to clamp the tensile sample; this anchor clamps through twine banding tensile sample on the bracing piece rethread first wedge clamp splice and second wedge clamp splice with tensile sample tight, can effectively prevent the emergence of the phenomenon of skidding, improved the accuracy of experimental result greatly.
In a further technical scheme, a first lengthening loop bar for driving the worm to rotate is mounted on the worm, and the worm can be easily rotated by the first lengthening loop bar; the depression bar is close to the upper end and installs and is used for driving depression bar pivoted second extension loop bar, sets up second extension loop bar and can be convenient for easily realize the depression bar and rotate.
In a further technical scheme, the thickness of the push pedal is less than the height of joint spout, it is inherent in first wedge clamp splice and the second wedge clamp splice the top of joint spout along vertical direction be equipped with the mounting hole of joint spout intercommunication, sliding connection has the slider in the mounting hole, and be used for with the slider presses to the spring of push pedal, adjusting bolt who is used for adjusting the spring pretightning force is installed to the upper end of mounting hole.
Through above-mentioned technical scheme, rotatory depression bar promotes first wedge clamp splice and second wedge clamp splice downstream and presss from both sides tensile sample after, the in-process sample that the strip sample is stretched can take place deformation (by the clamp flat), consequently first wedge clamp splice and second wedge clamp splice relative fixture body can move down under tensile sample's effect, because the thickness of pushing away is less than the height of joint spout, consequently can compression spring when first wedge clamp splice and second wedge clamp splice move down, simultaneously because first wedge clamp splice of the effect in wedge groove and second wedge clamp splice can clamp tensile sample more tightly.
In a further technical scheme, the adjusting bolt is an inner hexagon bolt.
Has the advantages that:
when the universal tester clamp works, a banded tensile sample extends into the wedge-shaped groove from a position between the first wedge-shaped clamping block and the second wedge-shaped clamping block and is wound on the supporting rod, then the worm is rotated to drive the worm wheel meshed with the worm to rotate, the worm wheel drives the supporting rod to rotate to wind the banded tensile sample on the supporting rod in a multi-layer mode, and finally the first wedge-shaped clamping block and the second wedge-shaped clamping block are pushed to move downwards through the rotary pressing rod to clamp the tensile sample; this anchor clamps through twine banding tensile sample on the bracing piece rethread first wedge clamp splice and second wedge clamp splice with tensile sample tight, can effectively prevent the emergence of the phenomenon of skidding, improved the accuracy of experimental result greatly.
Drawings
Fig. 1 is a schematic view of a first assembly structure of a universal testing machine fixture of the present invention;
FIG. 2 is a schematic view of a second assembly structure of a universal testing machine fixture of the present invention;
fig. 3 is an exploded view of a universal testing machine fixture according to the present invention;
fig. 4 is the sectional structure schematic diagram of a universal tester fixture of the utility model.
Reference numerals: 1-a clamp body; 101-a wedge-shaped groove; 2-a first wedge clamp block; 3-a second wedge clamp block; 4-clamping the sliding chute; 5-a pressure lever; 6-pushing the plate; 7-cover plate; 8-a limiting plate; 9-a support bar; 10-avoidance groove; 11-a worm gear; 12-a scaffold; 13-a worm; 14-a first elongated loop bar; 15-a second elongated loop bar; 16-mounting holes; 17-a slide block; 18-a spring; 19-adjusting the bolt.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in fig. 1-4, a universal tester fixture comprises a fixture body 1 with a wedge-shaped groove 101 therein, wherein the wedge-shaped groove 101 is internally connected with a first wedge-shaped clamping block 2 and a second wedge-shaped clamping block 3 which are matched with each other and used for clamping a test sample in a sliding manner; clamping sliding grooves 4 with opposite positions are formed in the upper portions of the first wedge-shaped clamping block 2 and the second wedge-shaped clamping block 3, a pressing rod 5 with one end extending into the wedge-shaped groove 101 is in threaded connection with the upper portion of the clamp body 1, and a pushing plate 6 matched with the clamping sliding grooves 4 and used for driving the first wedge-shaped clamping block 2 and the second wedge-shaped clamping block 3 to move up and down is arranged at one end, extending into the wedge-shaped groove 101, of the pressing rod 5; a cover plate 7 is installed at an opening on one side of the wedge-shaped groove 101 on the clamp body 1 through a bolt, a limiting plate 8 is installed at an opening on the other side of the wedge-shaped groove 101 through a bolt, and the cover plate 7 and the limiting plate 8 are respectively installed at openings on two sides of the wedge-shaped groove 101, so that the first wedge-shaped clamping block 2 and the second wedge-shaped clamping block 3 in the wedge-shaped groove 101 can be effectively prevented from being separated from the wedge-shaped groove 101; a support rod 9 is rotatably connected between the limiting plate 8 and the cover plate 7 in the wedge-shaped groove 101, and the support rod 9 is positioned in the middle of the wedge-shaped groove 101; an avoidance groove 10 for avoiding the support rod 9 is arranged on the mutually clamped surface of the first wedge-shaped clamping block 2 and the second wedge-shaped clamping block 3; the worm wheel 11 is installed to the one end that the bracing piece 9 stretches out apron 7, be connected with through support 12 is rotated on the apron 7 and be used for the drive worm wheel 11 pivoted worm 13. The worm 13 is provided with a first lengthening loop bar 14 for driving the worm 13 to rotate, and the first lengthening loop bar 14 can facilitate the rotation of the worm 13; the pressing rod 5 is close to the upper end and is provided with a second lengthening loop bar 15 used for driving the pressing rod 5 to rotate, and the pressing rod 5 can be easily rotated by arranging the second lengthening loop bar 15.
When the universal tester clamp works, a banded tensile sample extends into the wedge-shaped groove 101 from a position between the first wedge-shaped clamping block 2 and the second wedge-shaped clamping block 3 and is wound on the supporting rod 9, then the worm 13 is rotated through the first lengthening loop bar 14 to drive the worm wheel 11 meshed with the worm 13 to rotate, the worm wheel 11 drives the supporting rod 9 to rotate to wind the banded tensile sample on the supporting rod 9 in a multi-layer mode, and finally the pressing rod 5 is rotated through the second lengthening loop bar 15 to push the first wedge-shaped clamping block 2 and the second wedge-shaped clamping block 3 to move downwards to clamp the tensile sample; this anchor clamps are through winding banded tensile sample on bracing piece 9 rethread first wedge clamp splice 2 and second wedge clamp splice 3 press from both sides tensile sample tightly, can prevent effectively that the sample from skidding the emergence of phenomenon in tensile process, have improved the accuracy of experimental result greatly.
The thickness of push pedal 6 is less than the height of joint spout 4, be in first wedge clamp splice 2 and second wedge clamp splice 3 the top of joint spout 4 along vertical direction be equipped with the mounting hole 16 of 4 intercommunications of joint spout, sliding connection has slider 17 in the mounting hole 16, and be used for with slider 17 presses to the spring 18 of push pedal 6, adjusting bolt 19 that is used for adjusting the 18 pretightning forces of spring is installed to the upper end of mounting hole 16, adjusting bolt 19 is hexagon socket head cap screw.
After rotary pressure bar 5 promoted first wedge clamp splice 2 and second wedge clamp splice 3 downstream and presss from both sides tensile sample tightly, the in-process sample that the banding sample is stretched can take place deformation (by the clamp), consequently first wedge clamp splice 2 and second wedge clamp splice 3 can downstream relative anchor clamps body 1 under tensile sample's effect, because the thickness of push pedal 6 is less than the height of joint spout 4, consequently can drive adjusting bolt 19 compression spring 18 when first wedge clamp splice 2 and second wedge clamp splice 3 downstream, simultaneously because first wedge clamp splice 2 of the effect of wedge groove 101 and second wedge clamp splice 3 can clamp tensile sample more tightly.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The universal tester clamp is characterized by comprising a clamp body (1) with a wedge-shaped groove (101) arranged inside, wherein a first wedge-shaped clamping block (2) and a second wedge-shaped clamping block (3) which are matched with each other and used for clamping a test sample are connected in the wedge-shaped groove (101) in a sliding mode; clamping sliding grooves (4) with opposite positions are formed in the upper portions of the first wedge-shaped clamping block (2) and the second wedge-shaped clamping block (3), a pressing rod (5) with one end extending into the wedge-shaped groove (101) is in threaded connection with the upper portion of the clamp body (1), and a pushing plate (6) which is matched with the clamping sliding grooves (4) and used for driving the first wedge-shaped clamping block (2) and the second wedge-shaped clamping block (3) to move up and down is arranged at one end, extending into the wedge-shaped groove (101), of the pressing rod (5); a cover plate (7) is arranged at an opening on one side of the wedge-shaped groove (101) on the clamp body (1), and a limiting plate (8) is arranged at an opening on the other side; a support rod (9) is rotatably connected between the limiting plate (8) and the cover plate (7) in the wedge-shaped groove (101), and the support rod (9) is positioned in the middle of the wedge-shaped groove (101); an avoidance groove (10) for avoiding the support rod (9) is arranged on the mutually clamped surface of the first wedge-shaped clamping block (2) and the second wedge-shaped clamping block (3); the worm wheel (11) is installed to the one end that bracing piece (9) stretched out apron (7), be connected with through support (12) rotation on apron (7) and be used for the drive worm wheel (11) pivoted worm (13).
2. The universal tester jig as claimed in claim 1, wherein the worm (13) is provided with a first elongated loop bar (14) for driving the worm (13) to rotate; and a second lengthened loop bar (15) for driving the compression bar (5) to rotate is arranged at the upper end of the compression bar (5).
3. The universal tester fixture as claimed in claim 1, wherein the thickness of the push plate (6) is smaller than the height of the clamping chute (4), a mounting hole (16) communicated with the clamping chute (4) is vertically arranged above the clamping chute (4) in the first wedge-shaped clamping block (2) and the second wedge-shaped clamping block (3), a sliding block (17) and a spring (18) used for pressing the sliding block (17) to the push plate (6) are slidably connected in the mounting hole (16), and an adjusting bolt (19) used for adjusting the pretightening force of the spring (18) is mounted at the upper end of the mounting hole (16).
4. The universal tester jig as claimed in claim 3, wherein the adjusting bolt (19) is a hexagon socket head cap screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920290472.3U CN209841534U (en) | 2019-03-07 | 2019-03-07 | Universal testing machine clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920290472.3U CN209841534U (en) | 2019-03-07 | 2019-03-07 | Universal testing machine clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209841534U true CN209841534U (en) | 2019-12-24 |
Family
ID=68905559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920290472.3U Active CN209841534U (en) | 2019-03-07 | 2019-03-07 | Universal testing machine clamp |
Country Status (1)
| Country | Link |
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| CN (1) | CN209841534U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111256934A (en) * | 2020-03-31 | 2020-06-09 | 中国航发动力股份有限公司 | Turbine blade vibration test tool and turbine blade clamping method |
| CN111272540A (en) * | 2020-03-18 | 2020-06-12 | 中国船舶重工集团公司第七二五研究所 | Sample clamping assembly for composite material laminate compression test and use method |
| CN111982668A (en) * | 2020-08-27 | 2020-11-24 | 温州际高检测仪器有限公司 | Superfine metal composite fiber test fixture |
| CN113525713A (en) * | 2021-06-28 | 2021-10-22 | 中国飞机强度研究所 | Tight device in top |
| CN117871266A (en) * | 2024-03-11 | 2024-04-12 | 西格码电气股份有限公司 | Electronic universal testing machine for testing performance of amorphous alloy for transformer |
-
2019
- 2019-03-07 CN CN201920290472.3U patent/CN209841534U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272540A (en) * | 2020-03-18 | 2020-06-12 | 中国船舶重工集团公司第七二五研究所 | Sample clamping assembly for composite material laminate compression test and use method |
| CN111256934A (en) * | 2020-03-31 | 2020-06-09 | 中国航发动力股份有限公司 | Turbine blade vibration test tool and turbine blade clamping method |
| CN111982668A (en) * | 2020-08-27 | 2020-11-24 | 温州际高检测仪器有限公司 | Superfine metal composite fiber test fixture |
| CN113525713A (en) * | 2021-06-28 | 2021-10-22 | 中国飞机强度研究所 | Tight device in top |
| CN117871266A (en) * | 2024-03-11 | 2024-04-12 | 西格码电气股份有限公司 | Electronic universal testing machine for testing performance of amorphous alloy for transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 7th Floor, Building A, No. 1588 Jiangnan Road, Yinzhou District, Ningbo City, Zhejiang Province, 315048 Patentee after: Ningbo Labor Safety Technology Service Co.,Ltd. Country or region after: China Address before: 7 / F, 1588 Jiangnan Road, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: NINGBO LABOR SAFETY TECHNOLOGY SERVICE Co. Country or region before: China |
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| CP03 | Change of name, title or address |