CN109238857B - Expansion simulation test method and test fixture thereof - Google Patents
Expansion simulation test method and test fixture thereof Download PDFInfo
- Publication number
- CN109238857B CN109238857B CN201811328867.4A CN201811328867A CN109238857B CN 109238857 B CN109238857 B CN 109238857B CN 201811328867 A CN201811328867 A CN 201811328867A CN 109238857 B CN109238857 B CN 109238857B
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- test
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- base material
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 238000004088 simulation Methods 0.000 title claims abstract description 18
- 238000010998 test method Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000010079 rubber tapping Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 12
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 12
- 241001330002 Bambuseae Species 0.000 claims description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 12
- 239000011425 bamboo Substances 0.000 claims description 12
- 239000011449 brick Substances 0.000 claims description 8
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- 239000010440 gypsum Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 2
- 239000011456 concrete brick Substances 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- G01N2203/0017—Tensile
-
- 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
- G01N2203/0274—Tubular or ring-shaped specimens
-
- 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
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses an expansion simulation test method and a test clamp thereof, wherein the expansion simulation test method comprises the steps of firstly clamping a base material provided with an expansion pipe and a self-tapping screw through the clamp, then simulating the actual condition by using a pulling machine to give a pulling force to the self-tapping screw towards the pulling direction, testing and recording the maximum force value generated in the process of cracking or expanding the base material, wherein the test clamp comprises an upper clamp, a sleeve, a connecting rod and a lower clamp, the self-tapping screw is quickly fixed on the sleeve through grooving, the connecting rod is quickly fixed on the lower clamp through rotating a hand wheel, the distance between the sleeve and the lower clamp can be adjusted through the connecting rod, and the pulling machine can pull the self-tapping screw fixed in different base materials through the clamp, thereby simulating the actual tensile capacity of the expansion pipe in different use occasions at home and abroad, and the test speed is simple and convenient to operate.
Description
[ field of technology ]
The invention relates to the technical field of expansion pipes, in particular to an expansion simulation test method and the technical field of test clamps thereof.
[ background Art ]
The expansion pipe is used for fastening connection and installation of various kinds of hanging articles in middle and small classes and is matched with a self-tapping screw for use. When the expansion pipe is installed, firstly, a prefabricated hole is drilled on the wall body according to the size of the expansion pipe, the size of the prefabricated hole is consistent with the outer diameter of the expansion pipe, then, a matched self-tapping screw is placed in a fixed section of the expansion pipe, and then, the self-tapping screw is pressed and tapped into the expansion section of the expansion pipe by using a tool, so that the expansion section is expanded and tightly attached to the wall of the prefabricated hole on the wall body, and the required anchoring force is achieved.
However, the domestic expansion pipe industry does not have unified testing and inspection standards and proper clamps, so a simulation experiment method for the actual use condition of the expansion pipe is needed to detect the performance of the expansion pipe.
[ invention ]
The invention aims to solve the problems in the prior art, and provides an expansion simulation test method and a test clamp thereof, which can be used for quickly fixing a self-tapping screw on a sleeve through cutting grooves, quickly fixing a connecting rod on a lower clamp through rotating a hand wheel, and adjusting the distance between the sleeve and the lower clamp through the connecting rod, so that a tensile machine pulls the self-tapping screw fixed in different base materials through the clamp, thereby simulating the actual tensile capacity of an expansion pipe in different use occasions at home and abroad, and the expansion simulation test method is simple and convenient to operate and high in test speed.
In order to achieve the above purpose, the present invention provides an expansion simulation test method, which includes the steps of clamping a substrate with an expansion pipe and a self-tapping screw mounted thereon by a clamp, and then simulating a pulling force applied to the self-tapping screw in a pulling direction by a pulling machine in actual conditions, and testing and recording a maximum force value generated during the process of cracking or expanding the substrate.
Preferably, the base material is a test board or a test brick, the test board is a gypsum board with the thickness of 9mm, a gypsum board with the thickness of 12mm or a three clamping board with the thickness of 8mm, and the test brick is a C25 concrete brick, a cement brick or a red brick.
Preferably, the same expansion tube is tested at least 5 times on the same substrate and the test data is recorded as well as the batch quality of the substrate is left as a data comparison for subsequent testing.
Preferably, the same expansion pipe is used for carrying out actual tensile capacity test on at least three base materials, and the expansion performance of the expansion pipe is compared with that of different base materials, so that a detailed comparison test report is provided.
The utility model provides a use test fixture of inflation simulation test method, anchor clamps include anchor clamps, sleeve, connecting rod and lower anchor clamps, go up anchor clamps and form by four blocks of panel connection in proper order, the cavity is left at the middle part of four blocks of panel, be equipped with first screw hole on the panel at last anchor clamps top and be equipped with first U type breach on the panel of bottom, the sleeve include first step section of thick bamboo and second step section of thick bamboo, be equipped with the grooving between first step section of thick bamboo and the second step section of thick bamboo, be equipped with the second screw hole in the first step section of thick bamboo, be equipped with the second U type breach on the second step section of thick bamboo, the connecting rod includes threaded rod and the first bolt of bottom screw in at the inside third screw hole of threaded rod, be equipped with the elongated slot unanimous with the long limit direction of bottom plate on the bottom plate of lower anchor clamps, slide in the elongated slot is fixed with first cylinder piece, the right side of first cylinder piece is equipped with the second cylinder piece of fixing on the bottom plate, the both ends of bottom plate are fixed with the curb plate through the screw, screw on the left side curb plate is fixed with the rotation hand wheel, the right-hand member of rotation hand member is equipped with the ejector pad, the second screw bolt on the second side is fixed with the screw bolt.
Preferably, the size of the cavity is at least 10cm x 10cm.
Preferably, the thickness of the second barrel is 3mm, 5mm or 8mm, the opening orientation of the second U-shaped notch is consistent with the opening orientation of the cutting groove, and a cutting surface is further arranged on one side of the second barrel, which is positioned on the opening of the second U-shaped notch.
Preferably, the external thread of the threaded rod is matched with the second threaded hole, and an arc-shaped guiding part is arranged at the connecting section of the screw head of the first bolt and the rod part.
Preferably, one side of the pushing block, which is close to the first cylindrical block, is provided with an arc surface matched with the first cylindrical block.
The invention has the beneficial effects that: according to the invention, the self-tapping screw is quickly fixed on the sleeve through the cutting groove, the connecting rod is quickly fixed on the lower clamp through rotating the hand wheel, the distance between the sleeve and the lower clamp can be adjusted through the connecting rod, so that the self-tapping screw fixed in different base materials is pulled by the tension machine through the clamp, the actual tensile capacity of the expansion pipe in different use occasions at home and abroad is simulated, the operation is simple and convenient, and the test speed is high.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of a method of performing an inflation simulation test using a tensile machine and a test fixture;
FIG. 2 is a front view of the upper clamp;
FIG. 3 is a top view of the sheet material at the bottom of the upper clamp;
fig. 4 is a schematic perspective view of the sleeve.
Fig. 5 is a front view of the lower clamp.
In the figure: 1-upper clamp, 11-first screw hole, 12-first U-shaped notch, 13-cavity, 2-sleeve, 21-first step cylinder, 211-second screw hole, 22-cutting groove, 23-second step cylinder, 231-cutting face, 232-second U-shaped notch, 3-connecting rod, 31-threaded rod, 32-first bolt, 321-arc guide, 4-lower clamp, 41-bottom plate, 42-second cylindrical block, 43-first cylindrical block, 44-side plate, 45-rotation hand wheel, 451-push block, 46-second bolt, 47-snap nut, 5-expansion tube, 6-self tapping screw, 7-tension machine and 8-base material.
[ detailed description ] of the invention
The test fixture using an expansion simulation test method comprises an upper fixture 1, a sleeve 2, a connecting rod 3 and a lower fixture 4, wherein the upper fixture 1 is formed by sequentially connecting four plates, a cavity 13 is reserved in the center of each of the four plates, a first threaded hole 11 is formed in the plate at the top of the upper fixture 1, a first U-shaped notch 12 is formed in the plate at the bottom of the plate, a groove 22 is formed between the first step 21 and the second step 23, a second threaded hole 211 is formed in the first step 23, a second U-shaped notch 232 is formed in the second step 23, the connecting rod 3 comprises a threaded rod 31 and a first bolt 32 with the bottom screwed into a third threaded hole in the threaded rod 31, a long groove 43 is fixedly arranged in the long groove in a sliding manner, the long groove is formed in a bottom plate 41 of the lower fixture 4, the right side of the first cylindrical block 43 is provided with a second cylindrical block 42 fixed on the bottom plate 41, two ends of the bottom plate 41 are fixed with side plates 44 through screws, a rotating hand wheel 45 is screwed and fixed on the left side plate 44, the right end of the rotating hand wheel 45 is provided with a pushing block 451, the right side plate 45 is fixed with a second bolt 46, a clamping nut 47 is screwed on a screw rod of the second bolt 46, the size of the cavity 13 is at least 10cm x 10cm, the thickness of the second cylinder 23 is 3mm, 5mm or 8mm, the opening orientation of the second U-shaped notch 232 is consistent with the opening orientation of the cutting groove 22, one side of the second cylinder 23 positioned at the opening of the second U-shaped notch 232 is also provided with a cutting surface 231, the external thread of the threaded rod 31 is matched with the second threaded hole 211, the connecting section of the screw head and the rod of the first bolt 32 is provided with an arc-shaped guiding part 321, the pushing block 451 is provided with an arc surface matched with the first cylindrical block 43 on one side close to the first cylindrical block 43.
The working process of the invention comprises the following steps:
in the expansion simulation test method and the test clamp thereof, in the working process, the upper clamp 1 is fixed at the top of the tension machine 7 through the first threaded hole 11, and then the lower clamp 4 is fixed on a moving block of the tension machine 7. Then, the base material 8 with the expansion pipe 5 and the self-tapping screw 6 mounted thereon is placed in the cavity 13 of the upper jig 1. The substrate 8 is a test board or a test tile, the area of the test board is at least 10cm x 10cm, the size of the test tile is at least 10cm x 10cm, and the sizes of the test board and the test tile are matched with the size of the cavity 13. Next, the sleeve 2 is passed through the first U-shaped notch 12 and the head and shank of the tapping screw 6 are passed through the slit 22 and the second U-shaped notch 232, respectively, to fix the sleeve 2 to the tapping screw 6. Subsequently, the threaded rod 31 is screwed into the second threaded hole 211 of the sleeve 2, and the depth of the first bolt 32 screwed into the third threaded hole of the threaded rod 31 is adjusted according to the height. The arc-shaped guide portion 321 of the threaded rod 31 is placed between the first cylindrical block 43 and the second cylindrical block 42 of the lower clamp 4, and the hand wheel 45 is rotated to enable the pushing block 451 to push the first cylindrical block 43 to move along the long groove on the bottom plate 41 and clamp the first bolt 32 together with the second cylindrical block 42. Subsequently, the pulling machine 7 is operated to move the moving block downward to give the tapping screw 6 a pulling force in the pulling direction, and the value of the maximum force generated during the breaking or expanding pulling of the base material 8 is tested and recorded, and the data is read directly on the pulling machine 7. The number of tests of the same expansion tube 5 on the same substrate 8 is at least 5, and the test data and the batch quality of the substrate 8 are recorded for comparison of the data of the subsequent tests. The same expansion pipe 5 should perform actual tensile capacity test on at least three base materials 8, and then compare expansion performance differences of the expansion pipe 5 on different base materials 8, and give detailed comparison test reports. The second bolt 46 on the right side of the lower clamp 4 may be used to wind other wire-like materials such as iron wire to test tension.
According to the invention, the self-tapping screw is quickly fixed on the sleeve through the cutting groove, the connecting rod is quickly fixed on the lower clamp through rotating the hand wheel, the distance between the sleeve and the lower clamp can be adjusted through the connecting rod, so that the self-tapping screw fixed in different base materials is pulled by the tension machine through the clamp, the actual tensile capacity of the expansion pipe in different use occasions at home and abroad is simulated, the operation is simple and convenient, and the test speed is high.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (5)
1. The expansion simulation test method is characterized by comprising the following steps of: the method comprises the steps of firstly clamping a base material (8) provided with an expansion pipe (5) and a self-tapping screw (6) through a clamp, then simulating the actual condition by using a pulling machine (7) to give the self-tapping screw (6) a pulling force towards the pulling direction, testing and recording the maximum force value generated in the process of breaking or expanding the base material (8), wherein the base material (8) is a test board or a test brick, the test board is a 9mm thick gypsum board, a 12mm thick gypsum board or an 8mm thick three-clamping board, the test brick is a C25 concrete brick, a cement brick or a red brick, the test times of the same expansion pipe (5) on the same base material (8) are at least 5 times, and recording test data and the batch quality condition of the base material (8) to be used for data comparison of subsequent tests, the same expansion pipe (5) is used for carrying out actual tensile capability test on at least three base materials (8), comparing expansion performance differences of the expansion pipes (5) on different base materials (8), a detailed comparison test report is carried out, the clamp comprises an upper clamp (1), a sleeve (2), a connecting rod (3) and a lower clamp (3) are provided with a fourth clamp (1), a top part (12) is provided with a groove (13) is formed on the top of a top plate (11) and a top plate is provided with a top plate (12) in turn, sleeve (2) include first step section of thick bamboo (21) and second step section of thick bamboo (23), be equipped with grooving (22) between first step section of thick bamboo (21) and the second step section of thick bamboo (23), be equipped with second screw hole (211) in first step section of thick bamboo (21), be equipped with second U type breach (232) on second step section of thick bamboo (23), connecting rod (3) include threaded rod (31) and bottom screw in first bolt (32) at threaded rod (31) inside third screw hole, be equipped with the elongated slot unanimous with the long limit direction of bottom plate (41) on bottom plate (41) of anchor clamps (4), the elongated slot internal sliding is fixed with first cylindrical piece (43), the right side of first cylindrical piece (43) is equipped with second cylindrical piece (42) of fixing on bottom plate (41), both ends of bottom plate (41) are fixed with curb plate (44) through the screw, are fixed with rotation hand wheel (45) on the curb plate (44) of left side, the right-hand member is equipped with ejector pad (44), second bolt (46) on the right side plate (46).
2. The expansion simulation test method according to claim 1, wherein: the size of the cavity (13) is at least 10cm x 10cm.
3. The expansion simulation test method according to claim 1, wherein: the thickness of the second step cylinder (23) is 3mm, 5mm or 8mm, the opening orientation of the second U-shaped notch (232) is consistent with the opening orientation of the cutting groove (22), and a cutting surface (231) is further arranged on one side of the second step cylinder (23) positioned on the opening of the second U-shaped notch (232).
4. The expansion simulation test method according to claim 1, wherein: the external thread of threaded rod (31) cooperates with second screw hole (211), the spiral shell head of first bolt (32) is equipped with arc guide part (321) with the linkage segment of pole portion.
5. The expansion simulation test method according to claim 1, wherein: one side of the pushing block (451) close to the first cylindrical block (43) is provided with an arc surface matched with the first cylindrical block (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811328867.4A CN109238857B (en) | 2018-11-09 | 2018-11-09 | Expansion simulation test method and test fixture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811328867.4A CN109238857B (en) | 2018-11-09 | 2018-11-09 | Expansion simulation test method and test fixture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109238857A CN109238857A (en) | 2019-01-18 |
| CN109238857B true CN109238857B (en) | 2023-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811328867.4A Active CN109238857B (en) | 2018-11-09 | 2018-11-09 | Expansion simulation test method and test fixture thereof |
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| CN (1) | CN109238857B (en) |
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