CN209802845U - Cement-based capillary crystalline waterproofing agent bonding strength tensile fixture - Google Patents
Cement-based capillary crystalline waterproofing agent bonding strength tensile fixture Download PDFInfo
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- CN209802845U CN209802845U CN201920582476.9U CN201920582476U CN209802845U CN 209802845 U CN209802845 U CN 209802845U CN 201920582476 U CN201920582476 U CN 201920582476U CN 209802845 U CN209802845 U CN 209802845U
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Abstract
The utility model provides a cement base capillary crystalline waterproofing agent bonding strength tensile fixture, including placing the bottom plate, lateral shifting mechanism, longitudinal movement mechanism, the concrete substrate, draw joint and pull rod, place the bottom plate level and set up on the base of tensile strength testing machine, lateral shifting mechanism includes lateral shifting backup pad and T shape lateral shifting slider, and longitudinal movement mechanism includes longitudinal shifting backup pad and T shape longitudinal shifting slider, and the concrete substrate card is put on T shape longitudinal shifting slider, and the one end of pull rod is connected with the last plane middle part of drawing the joint. The tensile fixture can smoothly realize the transverse and longitudinal accurate movement and positioning of the concrete substrate, and is favorable for the smooth operation of a plurality of mortar test piece tensile tests, thereby being favorable for improving the tensile test efficiency.
Description
Technical Field
The utility model relates to a tensile anchor clamps of cement base capillary crystalline type waterproofing agent bonding strength.
Background
The method for testing the bonding strength of the cement-based capillary crystalline waterproofing agent is specified in the national standard GB18445-2012 cement-based capillary crystalline waterproofing material: 10 mortar test pieces with the size of (50 multiplied by 3) mm are uniformly distributed and molded on a concrete substrate with the size of (400 multiplied by 200 multiplied by 50) mm, then, a drawing joint with the size of (50 multiplied by 10) mm is bonded with the mortar test pieces by a high-strength bonding agent, and finally, a tensile strength test is carried out by a tensile machine. At present, when a tensile machine is used for testing mortar test pieces one by one, due to the fact that no proper concrete substrate fixing and moving clamp is available, fixing and moving of a concrete substrate are very troublesome, and testing efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cement base capillary crystalline type waterproofing agent bonding strength tensile jig utilizes this tensile jig can realize smoothly that the horizontal and vertical accurate movement of concrete substrate fixes a position, does benefit to going on smoothly of a plurality of mortar test piece tensile test to do benefit to and improve tensile test efficiency.
The utility model provides a technical scheme that its technical problem adopted is: a cement-based capillary crystalline waterproofing agent bonding strength tensile clamp comprises a placing bottom plate, a transverse moving mechanism, a longitudinal moving mechanism, a concrete substrate, a drawing joint and a pull rod, wherein the placing bottom plate is horizontally arranged on a base of a tensile strength testing machine, the transverse moving mechanism comprises a transverse moving support plate and a T-shaped transverse moving sliding block, the transverse moving support plate is arranged on the placing bottom plate, the T-shaped transverse moving sliding block is clamped on the transverse moving support plate, the T-shaped transverse moving sliding block can freely slide on the transverse moving support plate, the longitudinal moving mechanism comprises a longitudinal moving support plate and a T-shaped longitudinal moving sliding block, the longitudinal moving support plate is fixedly arranged on the T-shaped transverse moving sliding block, the T-shaped longitudinal moving sliding block is clamped on the longitudinal moving support plate, and the T-shaped longitudinal moving sliding block can freely slide on the longitudinal moving support plate, the concrete substrate is clamped on the T-shaped longitudinal moving sliding block, one end of the pull rod is connected with the middle of the upper plane of the drawing joint, limiting balls are arranged on the upper planes of the transverse moving supporting plate and the longitudinal moving supporting plate, and arc-shaped sliding grooves and arc-shaped grooves matched with the corresponding limiting balls are arranged on the T-shaped transverse moving sliding block and the T-shaped longitudinal moving sliding block.
Preferably, three limiting balls which are equidistant and distributed along the length direction of the transverse moving support plate are arranged on the transverse moving support plate, and the distance between the centers of the two limiting balls which are adjacent to each other on the left and the right is equal to the distance between the middle parts of the two mortar test pieces which are adjacent to each other on the left and the right and distributed on the concrete base plate.
Furthermore, two rows of limiting balls are arranged on the longitudinal moving supporting plate, the number of the limiting balls in each row of limiting balls is 9, and the left-right distance and the front-back distance between the centers of the adjacent limiting balls are respectively equal to the left-right distance and the front-back distance between the middle parts of the two adjacent mortar test pieces distributed on the concrete substrate.
Furthermore, positioning holes for placing limiting balls are formed in the transverse moving supporting plate and the longitudinal moving supporting plate, a spring is arranged in each positioning hole, each limiting ball is located on the upper portion of the spring and is pressed in each positioning hole through a pressing plate, and an arc-shaped hole for exposing the upper portion of each limiting ball is formed in each pressing plate.
Furthermore, four internal thread pipes are arranged on the bottom plane of the transverse moving support plate, a screw adjusting supporting leg is sleeved in each internal thread pipe, two L-shaped clamping plates used for clamping the concrete substrate are arranged on two sides of the T-shaped longitudinal moving sliding block, and the L-shaped clamping plates are fixed on the T-shaped longitudinal moving sliding block through bolts.
Furthermore, two positioning rods are arranged on the bottom plane of the transverse moving support plate, and two positioning sleeves matched with the positioning rods are arranged on the placing bottom plate.
Preferably, a transverse pushing mechanism is arranged on one side of the transverse moving support plate, the transverse pushing mechanism comprises a transverse pushing lead screw and a transverse moving sliding block, the transverse pushing lead screw is transversely arranged on one side of the transverse moving support plate through the two support plates, the transverse moving sliding block is sleeved on the transverse pushing lead screw, and the transverse moving sliding block is connected with the longitudinal moving support plate.
Furthermore, a longitudinal pushing mechanism is arranged on one side of the longitudinal moving support plate and comprises a longitudinal pushing lead screw and a longitudinal moving sliding block, the longitudinal pushing lead screw is longitudinally arranged on one side of the longitudinal moving support plate through the two support plates, the longitudinal moving sliding block is sleeved on the longitudinal pushing lead screw, and the longitudinal moving sliding block is connected with the T-shaped longitudinal moving sliding block.
Preferably, the drawing connector comprises a square plate and a connecting pipe, the connecting pipe is vertically arranged in the middle of the upper plane of the square plate, a first through hole distributed along the radial direction of the connecting pipe is formed in the connecting pipe, and a second through hole matched with the first through hole is formed in the pull rod.
Preferably, two bubble levels distributed left and right and front and back are respectively arranged at one end of the transverse moving support plate.
The utility model has the advantages that: the utility model has simple structure and convenient operation; when a tensile test is carried out, the levelness of the transversely moving supporting plate can be adjusted by adjusting the supporting legs by referring to the two bubble level meter adjusting screws so as to ensure that the transversely moving supporting plate is kept horizontal in the experimental process, so that a mortar test piece is kept horizontally placed on a concrete substrate; the transverse and longitudinal movement of the concrete substrate can be smoothly realized by rotating the transverse pushing screw rod and the longitudinal pushing screw rod, so that a tensile machine can carry out tensile test on mortar test pieces positioned on different positions in the experimental process; through the positioning effect of the limiting balls, the vertical positioning of the middle part of the mortar test piece relative to the pull head of the tensile machine can be realized, so that the mortar test piece is ensured to be subjected to vertical tensile force when being stretched, and the effectiveness of tensile test data is favorably improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some of the preferred embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an application state of the present invention;
FIG. 2 is a side view of the overall structure of the present invention;
FIG. 3 is a side view of the T-shaped longitudinally moving slide;
FIG. 4 is a side view of the T-shaped laterally shifting slide;
FIG. 5 is a schematic view of the installation of the limiting ball on the longitudinal moving support plate;
FIG. 6 is an enlarged view taken at A in FIG. 1;
In the figure: the device comprises a placement bottom plate, a 21 transverse moving support plate, a 211 internal threaded pipe, 212 screw rod adjusting support legs, 213 transverse pushing lead screws, 214 transverse moving sliders, 215 positioning rods, 216 positioning sleeves, 217 bubble level meters, 22T-shaped transverse moving sliders, 31 longitudinal moving support plates, 311 longitudinal pushing lead screws, 312 longitudinal moving sliders, 313 positioning holes, 32T-shaped longitudinal moving sliders, 321L-shaped clamping plates, 322 bolts, 4 concrete base plates, 5 drawing joints, 51 square plates, 52 connecting pipes, 521 first through holes, 6 pull rods, 61 second through holes, 7 limiting balls, 71 pressing plates, 72 springs, 8 arc-shaped sliding grooves and 81 arc-shaped grooves.
Detailed Description
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following specific embodiments and accompanying drawings 1 to 6, and it is obvious that the described embodiments are only a part of the preferred embodiments of the present invention, and not all embodiments. Those skilled in the art can make similar variations without departing from the spirit of the invention, and therefore the invention is not limited by the specific embodiments disclosed below.
the utility model provides a cement-based capillary crystalline waterproofing agent bonding strength tensile fixture (as shown in figure 1), which comprises a placing bottom plate 1, a transverse moving mechanism, a longitudinal moving mechanism, a concrete substrate 4, a drawing joint 5 and a pull rod 6, wherein the placing bottom plate 1 is horizontally arranged on a base 101 of a tensile strength testing machine, the transverse moving mechanism comprises a transverse moving support plate 21 and a T-shaped transverse moving slider 22, the transverse moving support plate 21 is arranged on the placing bottom plate 1, when the mortar test piece 103 is subjected to tensile test, the mortar test piece 103 is required to be subjected to vertical tension only to ensure the validity of test data, the mortar test piece 103 is required to be subjected to vertical tension only on the premise that the mortar test piece 103 must be kept horizontally arranged, in the embodiment, in order to ensure that the mortar test piece 103 is horizontally arranged, the transverse moving support plate 21 needs to be horizontally arranged, in order to keep the transverse moving support plate 21 horizontally placed on the placing bottom plate 1, four internal threaded tubes 211 are arranged on the bottom plane of the transverse moving support plate 21, a screw rod adjusting leg 212 is sleeved in each internal threaded tube 211, the adjustment of the levelness of the transverse moving support plate 21 can be realized by adjusting the screw rod adjusting leg 212, furthermore, in order to observe the levelness of the transverse moving support plate 21, two bubble levels 217 which are distributed from left to right and from front to back are respectively arranged at one end of the transverse moving support plate 21, in order to realize vertical guiding and positioning during the up and down movement of the transverse moving support plate 21, two positioning rods 215 are arranged on the bottom plane of the transverse moving support plate 21, two positioning sleeves 216 which are matched with the positioning rods 215 are arranged on the placing bottom plate 1, the T-shaped transverse moving slide block 22 is clamped on the transverse moving support plate 21, and the T-shaped transverse moving slide block 22 can freely slide on the transverse moving support plate 21.
The longitudinal moving mechanism comprises a longitudinal moving support plate 31 and a T-shaped longitudinal moving slide block 32, the longitudinal moving support plate 31 is fixedly arranged on the T-shaped transverse moving slide block 22, the T-shaped longitudinal moving slide block 32 is clamped on the longitudinal moving support plate 31, and the T-shaped longitudinal moving slide block 32 can freely slide on the longitudinal moving support plate 31. In this embodiment, in order to facilitate the smooth movement of the longitudinally moving support plate 31, a transverse pushing mechanism is disposed on one side of the transversely moving support plate 21, the transverse pushing mechanism includes a transverse pushing screw 213 and a transverse moving slider 214, the transverse pushing screw 213 is disposed on one side of the transversely moving support plate 21 via two support plates, a guide rod is disposed between the two support plates and located on two sides of the transverse pushing screw 213, the transverse moving slider 214 is sleeved on the transverse pushing screw 213 and the guide rod, the transverse moving slider 214 is connected to the longitudinally moving support plate 31, and the transverse movement of the longitudinally moving support plate 31 can be achieved by rotating the transverse pushing screw 213; in order to realize the smooth movement of the T-shaped longitudinal moving slider 32 on the longitudinal moving support plate 31, a longitudinal pushing mechanism is disposed on one side of the longitudinal moving support plate 31, the longitudinal pushing mechanism includes a longitudinal pushing screw 311 and a longitudinal moving slider 312, the longitudinal pushing screw 311 is disposed on one side of the longitudinal moving support plate 31 longitudinally through two support plates, a guide rod is disposed between the two support plates and located on two sides of the longitudinal pushing screw 311, the longitudinal moving slider 312 is sleeved on the longitudinal pushing screw 311 and the guide rod, the longitudinal moving slider 312 is connected to the T-shaped longitudinal moving slider 32, and the T-shaped longitudinal moving slider 32 can be moved by rotating the longitudinal pushing screw 311.
The concrete substrate 4 is clamped on the T-shaped longitudinal moving slider 32, in this embodiment, in order to realize stable positioning of the concrete substrate 4 on the T-shaped longitudinal moving slider 32, two L-shaped clamping plates 321 for clamping the concrete substrate 4 are disposed on two sides of the T-shaped longitudinal moving slider 32, the L-shaped clamping plates 321 are fixed on the T-shaped longitudinal moving slider 32 by bolts 322, in this embodiment, the size of the concrete substrate 4 is (400 × 200 × 50) mm, 10 mortar test pieces 103 with the size of (50 × 50 × 3) mm are uniformly distributed on the concrete substrate 4, ten mortar test pieces 103 are divided into two rows, and five mortar test pieces in each row are distributed on the concrete substrate 4.
One end of the pull rod 6 is connected with the middle of the upper plane of the drawing connector, in this embodiment, the drawing connector 5 includes a square plate 51 and a connecting pipe 52, the connecting pipe 52 is vertically disposed on the middle of the upper plane of the square plate 51, a first through hole 521 distributed along the radial direction of the connecting pipe 52 is disposed on the connecting pipe 52, a second through hole 61 matched with the first through hole 521 is disposed on the pull rod 6, a pin shaft penetrates through the first through hole 521 and the second through hole 61 to realize the connection between the pull rod 6 and the connecting pipe 52, and during a tensile test, the square plate 51 and the mortar test piece 103 are bonded through a high-strength bonding agent.
the upper planes of the transverse moving support plate 21 and the longitudinal moving support plate 31 are both provided with limiting balls 7, in this embodiment, the specific distribution examples of the limiting balls 7 according to the specific distribution orientations of 10 mortar samples 103 on the concrete substrate 4 are as follows: three limiting balls 7 which are equally spaced and distributed along the length direction of the transverse moving support plate 21 are arranged on the transverse moving support plate 21, and the distance between the centers of the two spacing balls 7 which are adjacent to each other on the left and right is equal to the distance between the middle parts of the two mortar test pieces 103 which are adjacent to each other on the left and right and distributed on the concrete base plate 4, two rows of limiting balls 7 are arranged on the longitudinal moving support plate 31, the number of the limiting balls in each row of limiting balls is 9, the left-right distance and the front-back distance between the centers of the adjacent limiting balls 7 are respectively equal to the left-right distance and the front-back distance of the middle parts of the two adjacent mortar test pieces 103 distributed on the concrete substrate 4, in this embodiment, the limiting ball 7 is disposed on the lateral moving support plate 21 and the longitudinal moving support plate 31 in the same manner, and the limiting ball 7 is disposed on the longitudinal moving support plate 31 in the following specific manner: a positioning hole 313 for placing a limiting ball 7 is arranged on the longitudinal moving support plate 31, a spring 72 is arranged in the positioning hole 313, the limiting ball 7 is positioned at the upper part of the spring 72, the limiting ball 7 is pressed in the positioning hole 313 through a pressing plate 71, an arc-shaped hole for exposing the upper part of the limiting ball 7 is arranged on the pressing plate 71, a counter bore is arranged on the pressing plate 71, the pressing plate 71 is fixed on the longitudinal moving support plate 31 through a bolt, the upper plane of the pressing plate 71 is flush with the upper plane of the longitudinal moving support plate 31, an arc-shaped chute 8 and an arc-shaped groove 81 which are matched with the corresponding limiting ball 7 are arranged on the T-shaped transverse moving slide block 22 and the T-shaped longitudinal moving slide block 32, when the T-shaped transverse moving slide block 22 and the longitudinal moving T-shaped longitudinal moving slide block 32 are transversely moved, the arc-shaped chute 8 is clamped on the limiting ball 7, after the limiting ball 7 is clamped in the arc-shaped groove 81, the T-shaped transverse moving slide block 22 and the longitudinal moving T-shaped longitudinal moving slide block are correspondingly positioned, and then a corresponding tensile test can be carried out, the depth of the arc-shaped sliding groove 8 is smaller than the pop-up height of the limiting ball 7 when the limiting ball 7 is not pressed, and the depth of the arc-shaped groove 81 is equal to the pop-up height of the limiting ball 7 when the limiting ball 7 is not pressed, so that when the T-shaped transverse moving slide block 22 and the longitudinal moving T-shaped longitudinal moving slide block 32 are transversely moved, after the limiting ball 7 is clamped into the arc-shaped groove 81, the resistance of the T-shaped transverse moving slide block 22 and the T-shaped longitudinal moving slide block 32 is increased, the movement is difficult, and when in actual application, when the T-shaped transverse moving slide block 22 and the T-shaped longitudinal moving slide block 32 are difficult to move, the situation that the limiting ball 7 is clamped into the.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
The above description is provided for the preferred embodiments and examples of the present invention with reference to the accompanying drawings, but the present invention is not limited to the above embodiments and examples, and it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit of the present invention, and these modifications and variations should be construed as the protection scope of the present invention.
Claims (10)
1. A cement-based capillary crystalline waterproofing agent bonding strength tensile clamp is characterized by comprising a placing bottom plate, a transverse moving mechanism, a longitudinal moving mechanism, a concrete substrate, a drawing connector and a pull rod, wherein the placing bottom plate is horizontally arranged on a base of a tensile strength testing machine, the transverse moving mechanism comprises a transverse moving support plate and a T-shaped transverse moving slide block, the transverse moving support plate is arranged on the placing bottom plate, the T-shaped transverse moving slide block is clamped on the transverse moving support plate, the T-shaped transverse moving slide block can freely slide on the transverse moving support plate, the longitudinal moving mechanism comprises a longitudinal moving support plate and a T-shaped longitudinal moving slide block, the longitudinal moving support plate is fixedly arranged on the T-shaped transverse moving slide block, the T-shaped longitudinal moving slide block is clamped on the longitudinal moving support plate, the T-shaped longitudinal moving sliding block can freely slide on the longitudinal moving supporting plate, the concrete substrate is clamped on the T-shaped longitudinal moving sliding block, one end of the pull rod is connected with the middle of the upper plane of the drawing joint, limiting balls are arranged on the upper planes of the transverse moving supporting plate and the longitudinal moving supporting plate, and arc-shaped sliding grooves and arc-shaped grooves matched with the corresponding limiting balls are arranged on the T-shaped transverse moving sliding block and the T-shaped longitudinal moving sliding block.
2. the tensile jig for bonding strength of a cement-based capillary crystalline waterproofing agent according to claim 1, wherein three of the limiting balls are provided on the lateral moving support plate at equal intervals and distributed along the length direction of the lateral moving support plate, and the distance between the centers of the two limiting balls adjacent to each other on the left and right is equal to the distance between the centers of the two waterproof mortar test pieces adjacent to each other on the left and right distributed on the concrete base plate.
3. The cement-based capillary crystalline waterproofing agent bonding strength tensile jig according to claim 2, wherein two rows of limiting balls are provided on the longitudinally moving support plate, the number of the limiting balls in each row is 9, and the left-right spacing and the front-rear spacing between the centers of adjacent limiting balls are respectively equal to the left-right spacing and the front-rear spacing between the middle portions of two adjacent waterproof mortar test pieces distributed on the concrete substrate.
4. The tensile jig for bonding strength of a cement-based capillary crystalline waterproofing agent according to claim 3, wherein positioning holes for placing the limiting balls are provided in the lateral movement support plate and the longitudinal movement support plate, a spring is provided in the positioning hole, the limiting balls are located above the spring, the limiting balls are pressed in the positioning holes by a pressing plate, and arc-shaped holes for exposing the upper parts of the limiting balls are provided in the pressing plate.
5. The tensile clamp for the bonding strength of a cement-based capillary crystalline waterproofing agent as claimed in claim 1, wherein four internally threaded pipes are provided on the bottom surface of the laterally movable supporting plate, a screw adjusting leg is sleeved in each internally threaded pipe, two L-shaped clamping plates for clamping the concrete substrate are provided on both sides of the T-shaped longitudinally movable slider, and the L-shaped clamping plates are fixed on the T-shaped longitudinally movable slider by bolts.
6. The tensile fixture for bonding strength of cement-based capillary crystalline waterproofing agent according to claim 5, wherein two positioning rods are provided on the bottom plane of the laterally moving support plate, and two positioning sleeves are provided on the placement bottom plate to be engaged with the positioning rods.
7. The drawing jig for cohesive strength of a cement-based capillary crystalline waterproofing agent according to claim 1, wherein a lateral pushing mechanism is provided on one side of the lateral moving support plate, the lateral pushing mechanism comprises a lateral pushing screw and a lateral moving slider, the lateral pushing screw is provided laterally on one side of the lateral moving support plate through the two support plates, the lateral moving slider is fitted over the lateral pushing screw, and the lateral moving slider is connected to the longitudinal moving support plate.
8. The tensile jig for cohesive strength of a cementitious capillary crystalline waterproofing agent as claimed in claim 7, wherein a longitudinal pushing mechanism is provided on one side of said longitudinally movable support plate, said longitudinal pushing mechanism comprising a longitudinal pushing screw and a longitudinal moving slider, said longitudinal pushing screw being longitudinally provided on one side of said longitudinally movable support plate through both support plates, said longitudinal moving slider being fitted over said longitudinal pushing screw, said longitudinal moving slider being connected to said T-shaped longitudinal moving slider.
9. The drawing jig for bonding strength of a cement-based capillary crystalline waterproofing agent according to claim 1, wherein the drawing joint comprises a square plate and a connecting pipe, the connecting pipe is vertically disposed at the middle of the upper plane of the square plate, a first through hole is disposed on the connecting pipe and distributed along the radial direction of the connecting pipe, and a second through hole is disposed on the pull rod and matched with the first through hole.
10. The stretching jig for bonding strength of a cement-based capillary crystalline waterproofing agent according to claim 1, wherein two bubble levels are disposed at one end of the laterally moving supporting plate, respectively, and are disposed in a left-right direction and a front-back direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920582476.9U CN209802845U (en) | 2019-04-25 | 2019-04-25 | Cement-based capillary crystalline waterproofing agent bonding strength tensile fixture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920582476.9U CN209802845U (en) | 2019-04-25 | 2019-04-25 | Cement-based capillary crystalline waterproofing agent bonding strength tensile fixture |
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| CN209802845U true CN209802845U (en) | 2019-12-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044372A (en) * | 2019-12-30 | 2020-04-21 | 合肥舒实工贸有限公司 | Drawing force testing device for sensor and using method thereof |
| CN111678667A (en) * | 2020-06-17 | 2020-09-18 | 哈尔滨工业大学 | High-frequency testing machine, compact tensile test fixture switching device and using method |
| CN113029943A (en) * | 2021-03-31 | 2021-06-25 | 中铁检验认证中心有限公司 | Clamp for stripping and bonding performance test |
| CN113740156A (en) * | 2021-08-23 | 2021-12-03 | 科大讯飞股份有限公司 | Drawing test fixture and method |
-
2019
- 2019-04-25 CN CN201920582476.9U patent/CN209802845U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044372A (en) * | 2019-12-30 | 2020-04-21 | 合肥舒实工贸有限公司 | Drawing force testing device for sensor and using method thereof |
| CN111678667A (en) * | 2020-06-17 | 2020-09-18 | 哈尔滨工业大学 | High-frequency testing machine, compact tensile test fixture switching device and using method |
| CN113029943A (en) * | 2021-03-31 | 2021-06-25 | 中铁检验认证中心有限公司 | Clamp for stripping and bonding performance test |
| CN113740156A (en) * | 2021-08-23 | 2021-12-03 | 科大讯飞股份有限公司 | Drawing test fixture and method |
| CN113740156B (en) * | 2021-08-23 | 2024-02-13 | 科大讯飞股份有限公司 | Drawing test fixture and method |
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