CN112129636A - Vertical three-point static pressure testing device and testing method - Google Patents
Vertical three-point static pressure testing device and testing method Download PDFInfo
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- CN112129636A CN112129636A CN202011125668.0A CN202011125668A CN112129636A CN 112129636 A CN112129636 A CN 112129636A CN 202011125668 A CN202011125668 A CN 202011125668A CN 112129636 A CN112129636 A CN 112129636A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
- G01N2203/0066—Propagation of crack
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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Abstract
The invention discloses a vertical three-point static pressure testing device which comprises a clamp seat, a base, an adjusting assembly, a clamping assembly, a loading device and a pressing plate, wherein the clamping assembly is arranged on the base; the fixture base is divided into four symmetrically arranged front and back and left and right, and comprises a fixture base body and a clamping roller; the base comprises a bottom plate and a loading base bottom plate; the adjusting assembly comprises an adjusting block, an adjusting seat bottom plate and a set screw; the clamping assembly comprises a clamping pull rod and a fastening nut; the loading device comprises a loading seat, a pressure head seat and a pressure head; the clamp plate includes loading seat clamp plate and grip slipper clamp plate, is carved with the fixed regulation scale that corresponds with the slip regulation scale on the grip slipper clamp plate, constitutes the adjustment scale of the same group's grip roller interval jointly. The invention also discloses a three-point static pressure test method. The horizontal loading can be carried out on the plate, so that a sufficient space is provided for flexibly arranging a video recorder to record the cracking change condition of the loading part of the test piece; the device is suitable for material test pieces with different plate thicknesses through adjustment, and ensures high test precision, convenient operation and stable and reliable performance.
Description
Technical Field
The invention belongs to the technical field of material testing equipment, and particularly relates to a loading device for a three-point static pressure test of a plate and a method for performing a static pressure test by using the loading device.
Background
In the prior art, the three-point static pressure testing device horizontally places the plate and vertically loads the plate from the upper part of the plate. The vertical loading method is inconvenient to observe, and particularly, the change condition of cracking and cracking at the loading position of the test piece in the whole test process is difficult to record through a video recorder and the like.
Disclosure of Invention
In view of the above problems, the present invention is directed to a vertical three-point static pressure testing device, which can horizontally load a plate, so that there is sufficient space for flexibly arranging a camcorder to record the cracking change condition of a loaded part of a test piece; meanwhile, the three-point static pressure test can be carried out by adjusting the material test pieces suitable for different plate thicknesses.
Therefore, the technical scheme adopted by the invention is as follows: a vertical three-point static pressure testing device comprises a clamp seat, a base, an adjusting assembly, a clamping assembly, a loading device and a pressing plate;
the clamp seats are four in front-back and left-right symmetrical arrangement, each clamp seat comprises a clamp seat body and a clamping roller arranged on the clamp seat body, the two clamp seats in front-back symmetry form a group, a wedge-shaped adjusting groove is formed between the two clamp seat bodies in the same group, at least one of the two clamp seat bodies in the same group is carved with a sliding adjusting scale, and a gap is reserved between the two clamping rollers in the same group for the insertion of a plate test piece during loading;
the base comprises a bottom plate and a loading seat bottom plate which is installed on the bottom plate in a centering mode, left and right extending adjusting guide grooves are reserved on the left and right outer sides of the bottom plate, and sliding grooves extending left and right are formed in the loading seat bottom plate;
the two adjusting assemblies are symmetrically arranged on the left side and the right side of the bottom plate, each adjusting assembly comprises an adjusting block, an adjusting seat bottom plate and a set screw, the adjusting blocks are arranged in the adjusting grooves and the adjusting guide grooves, the adjusting seat bottom plate is fixedly arranged on the outer side of the bottom plate, the set screw horizontally penetrates through the adjusting seat bottom plate and then abuts against the adjusting block, the set screw is screwed to push the adjusting blocks to slide along the adjusting guide grooves, and the part of the adjusting blocks inserted into the adjusting grooves is wedge-shaped, so that the two clamp seats are pushed to move reversely;
the clamping assemblies comprise clamping pull rods and tightening nuts, each group of the clamp seats is provided with one clamping assembly, and two ends of each clamping pull rod are screwed on the corresponding clamp seat bodies through the tightening nuts respectively, so that the clamping assemblies on the same side are tensioned and fixed;
the loading device comprises loading seats, pressure head seats and pressure heads, the two pressure head seats are arranged on a sliding groove of a loading seat bottom plate in a bilateral symmetry sliding mode, one pressure head is fixedly connected to the outer side of each pressure head seat, the pressure heads are over against two clamping rollers in the same group and used for loading a plate test piece, a wedge-shaped loading groove is formed between the two pressure head seats, and the lower ends of the pressure heads are just inserted into the loading groove in a wedge shape, so that the two pressure head seats are pushed to slide reversely;
the clamping device comprises a pressing plate and a clamping seat pressing plate, wherein the loading seat pressing plate is used for limiting a loading device to move left and right, the clamping seat pressing plate is used for limiting a clamp seat to move front and back, a fixed adjusting scale corresponding to a sliding adjusting scale is carved on the clamping seat pressing plate, and an adjusting scale for the distance between clamping rollers in the same group is formed.
Preferably, the fixture seat body comprises a fixture seat upper plate, a fixture seat vertical plate, a fixture seat reinforcing plate and a fixture seat bottom plate, the sliding adjusting scale is carved on the fixture seat reinforcing plate, the adjusting groove is formed in the fixture seat bottom plate, two ends of the clamping roller are respectively installed on the fixture seat upper plate and the fixture seat bottom plate through sliding bearings, and two ends of the clamping pull rod are respectively locked on the fixture seat reinforcing plate.
More preferably, the centers of the bottom plate and the loading base bottom plate are provided with through centering holes.
Preferably, the whole base plate of the adjusting seat is 7-shaped, the vertical part is fixedly mounted on the side wall of the base plate, and the hook head part is just pressed on the base plate of the clamping seat towards the inner side.
Preferably, the front side and the rear side of the press head seat are provided with limiting bulges, each limiting bulge is provided with one loading seat press plate for pressing from the upper part, and the loading seat press plate is fixedly arranged on the loading seat bottom plate; each limiting clamp seat is provided with a clamping seat pressing plate, the clamping seat pressing plates are fixedly installed on the bottom plate and are arranged between the loading seat bottom plate and the clamping seat bottom plate, limiting flanges facing the corresponding clamping seat bottom plate are arranged at the tops of the clamping seat pressing plates, and the fixed adjusting scales are arranged on the limiting flanges.
Meanwhile, the invention also discloses a method for testing three-point static pressure by using the vertical three-point static pressure testing device, which comprises the following steps:
firstly, placing a vertical three-point static pressure testing device on a testing machine, adjusting the position and centering, and enabling a left pressing head seat and a right pressing head seat to be tightly attached to a loading seat during centering, wherein contact lines of the left pressing head seat and the right pressing head seat are aligned with a left symmetrical line and a right symmetrical line;
secondly, loosening a set screw on a bottom plate of the adjusting seat and a set nut on the clamping pull rod, rotating the set screw, observing a distance adjusting scale of the clamping rollers, adjusting the distance between the clamping rollers to be the thickness of the plate test piece multiplied by 2+0.5mm according to the thickness of the plate test piece, and finally screwing the set screw and the set nut to finish test preparation;
step three, preparing two plate test pieces, vertically placing one plate test piece between each group of clamping rollers and a pressure head, and loading the plate test pieces to finish single test;
when test pieces with different thicknesses are required to be tested, the distance between the clamping rollers is adjusted according to the thickness of the test piece, and the specific adjusting process is the second step.
The invention has the beneficial effects that:
(1) the device is provided with an adjusting assembly and a clamping assembly, the distance between two clamping rollers in the same group is adjusted through the adjusting assembly, and the positions of the clamping rollers are fixed through the clamping assembly, so that the device can be used for testing material test pieces with different plate thicknesses; meanwhile, the synchronous accurate adjustment of the four clamping rollers can be realized by combining with an adjusting scale for the distance between the clamping rollers;
(2) the pressing plate is additionally arranged, and the pressing plate is matched with the clamp seat and the base to limit the moving directions of the clamp seat and the loading device, so that the device works stably and reliably in the loading test process, and the test result is accurate;
(3) the clamp seats are vertically arranged, the plate test piece can be vertically placed for horizontal loading, the observation test in the horizontal direction is facilitated, and sufficient space is provided for flexibly arranging equipment such as a video recorder and the like for recording the change of the crack of the test piece;
(4) each component (comprising the clamp seat, the base, the adjusting assembly, the clamping assembly, the loading device and the pressing plate) forming the vertical three-point static pressure testing device has novel structure, ingenious design and reasonable and compact layout, and can ensure high testing precision, convenient operation and stable and reliable performance.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of a fixture seat according to the present invention.
Fig. 3 is a schematic structural view of the base of the present invention.
FIG. 4 is a schematic view of an adjustment assembly according to the present invention.
Fig. 5 is a schematic view of the structure of the clamping assembly of the present invention.
Fig. 6 is a schematic structural diagram of a loading device according to the present invention.
FIG. 7 is a schematic structural view of a press plate according to the present invention.
FIG. 8 is a test state diagram of the present invention.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in FIG. 1, a vertical three-point static pressure testing device mainly comprises a clamp seat A, a base B, an adjusting assembly C, a clamping assembly D, a loading device E and a pressing plate F.
As shown in fig. 1 and 2, the fixture base a is divided into four parts that are symmetrically arranged in front, back, left, and right directions. Each jig base a includes a jig base body, and a grip roller 5 mounted on the jig base body.
Two clamp seats A which are symmetrical front and back form a group, and four clamp seats A form a left side and a right side respectively. A wedge-shaped adjusting groove b is formed between the two clamp seat bodies in the same group, at least one of the two clamp seat bodies in the same group is carved with a sliding adjusting scale a, and a gap is reserved between the two clamping rollers 5 in the same group for the insertion of a plate test piece during loading. Because the two clamping rollers 5 in the same group are synchronously adjusted, only one of the clamp seat bodies needs to be engraved with the sliding adjusting scale a.
Preferably, the fixture seat body is assembled by a fixture seat upper plate 1, a fixture seat vertical plate 2, a fixture seat reinforcing plate 3 and a fixture seat bottom plate 4. The grip slipper riser 2 and the grip slipper reinforcing plate 3 are arranged on the grip slipper bottom plate 4 in a T shape, the grip slipper upper plate 1 is fixed on the grip slipper riser 2, and the height of one grip slipper reinforcing plate 3 is equal to the sum of the heights of the grip slipper upper plate 1 and the grip slipper riser 2. One end of the clamping seat upper plate 1 extends out of the clamping seat upper plate 1 to form suspension, and two ends of the clamping roller 5 are respectively installed on the clamping seat upper plate 1 and the clamping seat bottom plate 4 through sliding bearings.
In addition, a slide adjusting scale a is engraved on the holder reinforcing plate 3, and an adjusting groove b is opened on the holder base plate 4.
As shown in fig. 1 and 3, the base B is composed of a base plate 6 and a loading base plate 7. The loading base bottom plate 7 is arranged on the bottom plate 6 in a centering way. Preferably, the centers of the bottom plate 6 and the loading base bottom plate 7 are provided with through centering holes, so that quick centering installation can be realized.
The left and right outer sides of the bottom plate 6 are provided with adjusting guide grooves c which are strip-shaped grooves extending left and right. The loading base bottom plate 7 is provided with a sliding groove d extending left and right.
Referring to fig. 1 and 4, the two adjusting assemblies C are symmetrically arranged on the left side and the right side of the bottom plate 6, and are used for adjusting the distance between two clamping rollers 5 in the same group, so as to meet the loading test of the plate test pieces with different thicknesses. Each adjusting assembly C consists of an adjusting block 8, an adjusting seat bottom plate 9 and a set screw 10. Adjusting block 8 is installed in adjustment tank b and adjustment guide way c, and adjusting seat bottom plate 9 fixed mounting is in the outside of bottom plate 6, and holding screw 10 level passes adjusting seat bottom plate 9 back top on adjusting block 8, twists holding screw 10 and can promote adjusting block 8 and slide along adjustment guide way c, and adjusting block 8 inserts the part of adjustment tank b and is the wedge to promote two anchor clamps seat A reverse motion.
The method specifically comprises the following steps: a right triangle is respectively arranged on the two clamping base bottom plates 4 in the same group, and when the two clamping base bottom plates 4 in the same group are closed, the two right triangles are just spliced into an isosceles triangle to be used as an adjusting groove b. The adjusting block 8 is divided into an upper part and a lower part, the shape of the upper part is an isosceles triangle matched with the adjusting groove b, the shape of the lower part is matched with the cross section of the adjusting guide groove c, and the length of the upper part and the length of the lower part are equal.
Preferably, the adjusting seat bottom plate 9 is integrally in a 7 shape, the vertical part is fixedly arranged on the side wall of the bottom plate 6, and the hook head part is just pressed on the clamping seat bottom plate 4 towards the inner side. The vertical portion of the set screw 10 is provided with a threaded hole for mounting the set screw 10.
As shown in fig. 1 and 5, the clamping assembly D is composed of a clamping rod 11 and two tightening nuts 12. Each set of fixture mounts a is provided with a clamping assembly D. The two ends of the clamping pull rod 11 are respectively screwed on the corresponding clamp seat bodies through the fastening nuts 12, so that the clamping assemblies D on the same side are tightened and fixed. The clamping levers 11 are preferably each locked at both ends to the holder reinforcing plate 3.
As shown in fig. 1 and 6, the loading device E is composed of a loading base 13, two press head bases 14, and two press heads 15. The two pressure head bases 14 are symmetrically arranged on the sliding groove d of the loading base bottom plate 7 in a left-right sliding mode. The outer side of each pressure head seat 14 is fixedly connected with a pressure head 15, and the pressure head 15 is over against the two clamping rollers 5 in the same group for loading the plate test piece. A wedge-shaped loading groove is formed between the two press head bases 14, and the lower end of the press head 15 is just inserted into the loading groove in a wedge shape, so that the two press head bases 14 are pushed to slide reversely. Specifically, two right-angled triangles are respectively arranged on the two pressure head bases 14, and when the two pressure head bases 14 are closed, the two right-angled triangles are just spliced into an isosceles triangle to serve as the loading slot. The shape of the lower end of the pressure head 15 is matched with that of the loading groove.
As shown in fig. 1 and 7, the pressing plate F is mainly composed of a loading seat pressing plate 16 and a clamping seat pressing plate 17. The loading seat pressing plate 16 is used for limiting the loading device E to move left and right only, and the clamping seat pressing plate 17 is used for limiting the clamp seat A to move front and back only. The clamping seat pressing plate 17 is carved with a fixed adjusting scale g corresponding to the sliding adjusting scale a, and the fixed adjusting scale g and the sliding adjusting scale a jointly form an adjusting scale for the distance between the clamping rollers 5 in the same group.
Preferably, the front and rear sides of the pressing head base 14 are provided with limiting protrusions f, each limiting protrusion f is provided with a loading base pressing plate 16 for pressing from above, and the loading base pressing plate 16 is fixedly installed on the loading base bottom plate 7. Every inject anchor clamps seat A and be equipped with a grip slipper clamp plate 17, grip slipper clamp plate 17 fixed mounting is on bottom plate 6 to between loading seat bottom plate 7 and grip slipper bottom plate 4, the top of grip slipper clamp plate 17 is provided with the spacing flange h towards the corresponding grip slipper bottom plate 4, and fixed regulation scale g sets up on spacing flange h.
The installation process of the test device is as follows:
firstly, assembling a base, and connecting a bottom plate and a loading base bottom plate into the base by using a countersunk head bolt;
secondly, assembling a fixture seat, slowly pressing the sliding bearing into the clamping roller seat, slowly pressing the clamping roller into the sliding bearing, forbidding direct knocking in the assembling process to prevent the shaft, the bearing and the hole from deforming, and finally installing the upper plate of the clamping seat, the vertical plate of the clamping seat, the reinforcing plate of the clamping seat and the bottom plate of the clamping seat together by using countersunk bolts to form the fixture seat which is placed on the bottom seat;
thirdly, assembling an adjusting assembly, installing an adjusting block in a bottom plate adjusting guide groove, aligning and attaching an adjusting groove of a clamp seat to the adjusting block, installing a bottom plate of an adjusting seat, and screwing a set screw;
fourthly, assembling a clamping assembly, stringing the front and rear clamp seats together by using a clamping pull rod, and screwing a fastening nut into each of two ends of the clamping assembly, so that the distance between the front and rear clamp seats is 2-3 mm;
fifthly, assembling a loading device, and placing the loading device on a loading base plate;
and sixthly, finishing assembly, namely fixing the pressing plate on the bottom plate and the loading base bottom plate respectively by using bolts, and finally screwing the bolts.
A method for testing three-point static pressure by using the vertical three-point static pressure testing device comprises the following steps:
firstly, placing the vertical three-point static pressure testing device on a testing machine, adjusting the position and centering, wherein when centering, a left press head seat 14 and a right press head seat 14 are tightly attached to a loading seat 13, and contact lines of the left press head seat 14 and the right press head seat are aligned with a left symmetrical line and a right symmetrical line;
secondly, loosening a set screw 10 on a bottom plate 9 of the adjusting seat and a set nut 12 on a clamping pull rod 11, then rotating the set screw 10, observing an interval adjusting scale of the clamping roller 5, adjusting the interval of the clamping roller 5 to be the thickness of the plate test piece multiplied by 2+0.5mm according to the thickness of the plate test piece, and finally screwing the set screw 10 and the set nut 12 to finish test preparation;
thirdly, preparing two plate test pieces, vertically placing one plate test piece between each group of clamping rollers 5 and the pressure head 15, and loading the plate test pieces to complete single test, as shown in fig. 8;
when test pieces with different thicknesses are required to be tested, the distance between the clamping rollers 5 is adjusted according to the thickness of the test pieces, and the specific adjusting process is the second step.
Claims (6)
1. The utility model provides a vertical three point static pressure testing arrangement which characterized in that: comprises a clamp seat (A), a base (B), an adjusting assembly (C), a clamping assembly (D), a loading device (E) and a pressing plate (F);
the fixture base (A) is divided into four fixture bases which are symmetrically arranged front and back and left and right, each fixture base (A) comprises a fixture base body and a clamping roller (5) arranged on the fixture base body, the two fixture bases (A) which are symmetrically arranged front and back form a group, a wedge-shaped adjusting groove (b) is formed between the two fixture base bodies in the same group, at least one of the two fixture base bodies in the same group is carved with a sliding adjusting scale (a), and a gap is reserved between the two clamping rollers (5) in the same group for the insertion of a plate test piece during loading;
the base (B) comprises a bottom plate (6) and a loading base bottom plate (7) which is installed on the bottom plate (6) in a centering mode, adjusting guide grooves (c) extending leftwards and rightwards are reserved on the left outer side and the right outer side of the bottom plate (6), and sliding grooves (d) extending leftwards and rightwards are formed in the loading base bottom plate (7);
the adjusting assemblies (C) are two and symmetrically arranged on the left side and the right side of the bottom plate (6), each adjusting assembly (C) comprises an adjusting block (8), an adjusting seat bottom plate (9) and a set screw (10), the adjusting blocks (8) are arranged in an adjusting groove (b) and an adjusting guide groove (C), the adjusting seat bottom plates (9) are fixedly arranged on the outer sides of the bottom plates (6), the set screws (10) horizontally penetrate through the adjusting seat bottom plates (9) and then abut against the adjusting blocks (8), the set screws (10) can be screwed to push the adjusting blocks (8) to slide along the adjusting guide grooves (C), and the portions, inserted into the adjusting grooves (b), of the adjusting blocks (8) are wedge-shaped, so that the two clamp seats (A) are pushed to move reversely;
the clamping assembly (D) comprises a clamping pull rod (11) and a fastening nut (12), each group of clamp seats (A) is provided with one clamping assembly (D), and two ends of the clamping pull rod (11) are respectively screwed on the corresponding clamp seat bodies through the fastening nut (12), so that the clamping assemblies (D) on the same side are tensioned and fixed;
the loading device (E) comprises a loading seat (13), two pressure head seats (14) and pressure heads (15), the two pressure head seats (14) are arranged on a sliding groove (d) of a loading seat bottom plate (7) in a sliding mode in a bilateral symmetry mode, one pressure head (15) is fixedly connected to the outer side of each pressure head seat (14), the pressure heads (15) are opposite to two clamping rollers (5) in the same group and used for loading a plate test piece, a wedge-shaped loading groove is formed between the two pressure head seats (14), and the lower end of each pressure head (15) is just inserted into the loading groove in a wedge shape, so that the two pressure head seats (14) are pushed to slide reversely;
the clamp plate (F) comprises a loading base clamp plate (16) and a clamping base clamp plate (17), the loading base clamp plate (16) is used for limiting the loading device (E) to move left and right only, the clamping base clamp plate (17) is used for limiting the clamp base (A) to move front and back only, and a fixed adjusting scale (g) corresponding to the sliding adjusting scale (a) is carved on the clamping base clamp plate (17) to jointly form an adjusting scale for the distance between the clamping rollers (5) in the same group.
2. The vertical three-point static pressure testing device according to claim 1, wherein: the fixture base body comprises a fixture base upper plate (1), a fixture base vertical plate (2), a fixture base reinforcing plate (3) and a fixture base bottom plate (4), a sliding adjusting scale (a) is carved on the fixture base reinforcing plate (3), an adjusting groove (b) is formed in the fixture base bottom plate (4), two ends of a clamping roller (5) are respectively installed on the fixture base upper plate (1) and the fixture base bottom plate (4) through sliding bearings, and two ends of a clamping pull rod (11) are respectively locked on the fixture base reinforcing plate (3).
3. The vertical three-point static pressure testing device according to claim 1, wherein: and through centering holes are formed in the centers of the bottom plate (6) and the loading base bottom plate (7).
4. The vertical three-point static pressure testing device according to claim 2, wherein: the whole adjusting seat bottom plate (9) is 7-shaped, the vertical part is fixedly installed on the side wall of the bottom plate (6), and the hook head part is just pressed on the clamping seat bottom plate (4) towards the inner side.
5. The vertical three-point static pressure testing device according to claim 2, wherein: limiting bulges (f) are arranged on the front side and the rear side of the press head seat (14), each limiting bulge (f) is provided with one loading seat press plate (16) for pressing from the upper part, and the loading seat press plates (16) are fixedly arranged on the loading seat bottom plate (7); every inject anchor clamps seat (A) and be equipped with a grip slipper clamp plate (17), grip slipper clamp plate (17) fixed mounting is on bottom plate (6) to between loading seat bottom plate (7) and grip slipper bottom plate (4), the top of grip slipper clamp plate (17) is provided with spacing flange (h) towards corresponding grip slipper bottom plate (4), fixed regulation scale (g) sets up on spacing flange (h).
6. A method for testing three-point static pressure by using the vertical three-point static pressure testing device as claimed in any one of claims 1 to 5, which is characterized by comprising the following steps:
firstly, placing a vertical three-point static pressure testing device on a testing machine, adjusting the position and centering, and enabling a left press head seat (14) and a right press head seat (14) to be tightly attached to a loading seat (13) during centering, wherein contact lines of the left press head seat and the right press head seat (14) are aligned to a left-right symmetrical line;
secondly, loosening a set screw (10) on a bottom plate (9) of the adjusting seat and a set nut (12) on a clamping pull rod (11), rotating the set screw (10), observing a distance adjusting scale of a clamping roller (5), adjusting the distance of the clamping roller (5) to be the thickness of the plate test piece multiplied by 2+0.5mm according to the thickness of the plate test piece, and finally screwing the set screw (10) and the set nut (12) to finish test preparation;
step three, preparing two plate test pieces, vertically placing one plate test piece between each group of clamping rollers (5) and a pressure head (15), and loading the plate test pieces to finish single test;
when test pieces with different thicknesses are required to be tested, the distance between the clamping rollers (5) is adjusted according to the thickness of the test pieces, and the specific adjusting process is the second step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011125668.0A CN112129636A (en) | 2020-10-20 | 2020-10-20 | Vertical three-point static pressure testing device and testing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011125668.0A CN112129636A (en) | 2020-10-20 | 2020-10-20 | Vertical three-point static pressure testing device and testing method |
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| Publication Number | Publication Date |
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| CN112129636A true CN112129636A (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011125668.0A Pending CN112129636A (en) | 2020-10-20 | 2020-10-20 | Vertical three-point static pressure testing device and testing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112650A (en) * | 2021-12-29 | 2022-03-01 | 哈尔滨工业大学 | Experimental device for compression performance test and use method thereof |
-
2020
- 2020-10-20 CN CN202011125668.0A patent/CN112129636A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112650A (en) * | 2021-12-29 | 2022-03-01 | 哈尔滨工业大学 | Experimental device for compression performance test and use method thereof |
| CN114112650B (en) * | 2021-12-29 | 2023-11-17 | 哈尔滨工业大学 | Experimental device for compression performance test and application method thereof |
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