CN112986006A - Testing tool and testing method for bending mechanical property of sandwich structure - Google Patents
Testing tool and testing method for bending mechanical property of sandwich structure Download PDFInfo
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- CN112986006A CN112986006A CN202110188336.5A CN202110188336A CN112986006A CN 112986006 A CN112986006 A CN 112986006A CN 202110188336 A CN202110188336 A CN 202110188336A CN 112986006 A CN112986006 A CN 112986006A
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- 238000005452 bending Methods 0.000 title claims abstract description 97
- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 238000010998 test method Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending 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
- 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
- G01N2203/0023—Bending
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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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
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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Abstract
The invention provides a test tool and a test method for bending mechanical properties of a sandwich structure, and the test tool and the test method comprise a bending device, wherein the bending device comprises a base plate, a bending plate, a driving assembly and a plurality of base shafts, the driving assembly is arranged at the bottom of the base plate, execution ends of the two driving assemblies penetrate through the base plate and are connected with the bottom of the bending plate, limiting assemblies are arranged on two sides of the bending plate, the plurality of base shafts penetrate through the bending plate, fixing devices are arranged at two ends of each base shaft and comprise a sliding ring and two sliding rails, the sliding ring is sleeved on the side wall of the base shaft, a braking assembly is arranged at the bottom of the sliding ring, a knife pressing frame is arranged at the top of the sliding ring, a lifting assembly is arranged between the sliding ring and the knife pressing frame, the bottoms of the two sliding rails are. The test tool provided by the invention can be used for conveniently carrying out bending tests on different positions of the sandwich structure.
Description
Technical Field
The invention relates to the technical field of sandwich structure testing, in particular to a testing tool and a testing method for bending mechanical property of a sandwich structure.
Background
In the technical field of civil engineering, bending mechanical property tests are carried out on products with sandwich structures, so that the bending mechanical property of the products can be known. At present, a testing tool for bending mechanical property of a sandwich structure becomes an important testing tool.
The prior patent (application number: 202020588310.0) proposes a steel bar bending strength testing tool, which comprises a supporting seat and a pressing seat, wherein a sliding groove is formed in the upper surface of the supporting seat, two groups of sliding seats are connected in the sliding groove in a sliding manner, bearing blocks used for placing steel bars are arranged on the two groups of sliding seats, the bearing blocks are arranged in a U shape, the pressing seat is positioned above the supporting seat, and the pressing seat is positioned between the two groups of bearing blocks. The product is favorable for improving the safety of the steel bar sample during testing and improving the detection result of the steel bar sample.
The product in the patent is favorable to improving the security when reinforcing bar sample tests to be favorable to improving the testing result of reinforcing bar sample. However, in the measurement process, the bending mechanical property test can be carried out on the steel bar at one point, and the measurement position is too single.
Disclosure of Invention
Based on this, the present invention provides a tool and a method for testing bending mechanical properties of a sandwich structure, so as to solve the technical problems in the background art.
The invention provides a test tool for bending mechanical properties of a sandwich structure, which comprises a bending device, wherein the bending device comprises a base plate, a bending plate, driving assemblies and a plurality of base shafts, the driving assemblies are arranged at the bottom of the base plate, the execution ends of the two driving assemblies penetrate through the base plate and are connected with the bottom of the bending plate, limiting assemblies are arranged on two sides of the bending plate, the base shafts penetrate through the bending plate, and fixing devices are arranged at two ends of each base shaft;
the fixing device comprises a sliding ring and two sliding rails, the sliding ring is sleeved on the side wall of the base shaft, a braking assembly is arranged at the bottom of the sliding ring, a tool holder is arranged at the top of the sliding ring, a lifting assembly is arranged between the sliding ring and the tool holder, the bottoms of the sliding rails are fixed on a base plate, the bottoms of the sliding rails are connected with a positioning block in a sliding mode, the side wall of the positioning block is connected with one end of the base shaft in a clamping mode, and a displacement assembly is arranged on one side of.
Preferably, the bending plate comprises four bottom plates, every two adjacent bottom plates are hinged to corresponding base shafts, and two limiting through holes are formed in the bottom plates and the base shafts. In the preferred embodiment, the design of the structure in which adjacent base plates are hinged to the corresponding base shaft allows the bending plate to be bent in different positions.
Preferably, drive assembly includes drive hydraulic cylinder and annular frame, crooked board bottom one end is connected to the annular frame, drive hydraulic cylinder fixes in the base plate bottom, drive hydraulic cylinder output runs through the base plate and extends to the upper junction actuating lever, actuating lever slip joint annular frame inner wall. In the preferred embodiment, the drive assembly provides the drive force for the rotation of the base plate.
Preferably, spacing subassembly is including extending the board, two pneumatic cylinders, two are connected to the extension board bottom the push pedal is all connected to the pneumatic cylinder output, push pedal sliding connection extends the board, two gag lever posts are connected to the push pedal lateral wall, the gag lever post extends to in the spacing through-hole. In the preferred embodiment, the plurality of bottom plates are conveniently limited into a whole by the limiting assembly.
Preferably, the inner wall of the slip ring is provided with two anti-rotation grooves, the anti-rotation grooves are in matched contact with anti-rotation bosses, the anti-rotation bosses are arranged on the side wall of the base shaft and are in contact with springs, and the springs are sleeved on the outer wall of the base shaft. In the preferred embodiment, the anti-rotation boss is matched with the anti-rotation groove to prevent the slip ring and the base shaft from rotating relatively.
Preferably, the brake assembly includes a brake lever that is threaded into the slip ring side wall and extends to the interior. In the preferred embodiment, the positioning and fixing of the slip ring is facilitated by the brake assembly.
Preferably, lifting unit includes first square sleeve pipe and threaded rod, the slip ring lateral wall is connected to first square sleeve pipe bottom, first square sleeve pipe inner wall cup joints the square sleeve pipe of second, threaded rod threaded connection second square sleeve pipe extends to the lower part and rotates the bottom of connecting first square sleeve pipe inner wall, the square sleeve pipe lateral wall of second connects the tool holder. In the preferred embodiment, the lifting of the tool pressing frame is realized through the lifting assembly, so that the interlayer structure to be measured can be clamped conveniently.
Preferably, the bottom of the knife pressing frame is provided with a sliding groove, the sliding groove is connected with the pressing block in a sliding mode, the bottom of the pressing block is provided with a base plate, and the bottom of the base plate is connected with the side wall of the sliding ring. In the preferred embodiment, different pressing blocks are conveniently and slidably mounted through the sliding grooves at the bottom of the pressing tool rest.
Preferably, the displacement assembly comprises a telescopic hydraulic cylinder, the side wall of the telescopic hydraulic cylinder is connected with the upper surface of the base plate, and the output end of the telescopic hydraulic cylinder is connected with the side wall of the positioning block. In the preferred embodiment, the displacement assembly provides a driving force for the movement of the positioning block.
The invention also provides a test method of the test tool for the bending mechanical property of the sandwich structure, the test tool for the bending mechanical property of the sandwich structure is the test tool for the bending mechanical property of the sandwich structure, and the method comprises the following steps:
the method comprises the following steps: clamping, namely placing the sandwich structure to be measured on a bending plate, pulling a plurality of slip rings outwards, screwing a brake rod when the slip rings slide to the side wall of the first square sleeve to be contacted with the side wall of the sandwich structure to be measured, selecting a proper pressing block, such as a pressing block with a semicircular head, connecting the pressing block with a sliding groove in a sliding manner, rotating a threaded rod, driving a second square sleeve to move downwards, moving to the pressing block, pressing and fixing the sandwich structure to be measured on a base plate, and finishing clamping;
step two: positioning, namely selecting a bending measurement position as required, if the middle part of a bending plate is selected as a bending position, starting pneumatic cylinders on the left side and the right side at the moment, driving a push plate and a limiting rod to move by the output ends of the pneumatic cylinders, sliding the limiting rod in a limiting through hole, limiting a bottom plate at the left end and an adjacent bottom plate thereof as a whole, then using a base shaft in the middle of the bending plate as a base shaft to be rotated, and driving a positioning block to move outwards by telescopic hydraulic cylinders at two ends of the base shaft except the base shaft to be rotated so as to complete positioning;
step three: crooked, open two drive hydraulic cylinders, the drive hydraulic cylinder output drives the actuating lever and slides in the annular frame, the annular frame drives crooked board both ends and rotates around waiting to rotate the base shaft, crooked board is crooked to sandwich structure, can reset and can fix a position the step again after the measurement finishes so that carry out the crooked measurement of different positions, if select right side base shaft as waiting to bend the position, the accessible gag lever post is spacing into whole with the three bottom plate in left side, can right side base shaft regard as waiting to rotate the base shaft this moment.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the bending plates can be bent at different positions through the structural design that the adjacent bottom plates are hinged on the corresponding base shafts, the plurality of bottom plates are conveniently limited into a whole through the limiting assembly, and the bending plates are matched with the limiting assembly to bend at different positions of the sandwich structure to be measured;
the driving assembly provides driving force for the rotation of the bottom plate, the fixing device is convenient for stably fixing the sandwich structure to be measured on the bending plate, and the anti-rotation boss and the anti-rotation groove in the fixing device are matched to prevent the relative rotation between the slip ring and the base shaft;
the slip ring can be conveniently positioned and fixed through the brake assembly, the lifting of the tool holder is realized through the lifting assembly, the sandwich structure to be measured is conveniently clamped and fixed between the pressing block and the cushion plate, and different pressing blocks can be conveniently and slidably mounted through the sliding groove in the bottom of the tool holder.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part may be learned by the practice of the above-described techniques of the disclosure, or may be learned by practice of the disclosure.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is an axial view of the overall structure of a test fixture for the bending mechanical property of a sandwich structure, which is provided by the invention;
FIG. 2 is a structural axial view of a fixing device in the testing tool for bending mechanical properties of a sandwich structure, which is provided by the invention;
FIG. 3 is a structural axial view of a driving assembly in the testing tool for bending mechanical properties of a sandwich structure, which is provided by the invention;
FIG. 4 is an isometric view of a bending plate structure in the test fixture for the bending mechanical property of the sandwich structure provided by the invention;
FIG. 5 is a structural side view of a driving assembly in the testing tool for bending mechanical properties of a sandwich structure, which is provided by the invention;
fig. 6 is a side view of the overall structure of the testing tool for bending mechanical property of the sandwich structure.
Description of the main symbols:
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 6, the present invention provides a testing tool for bending mechanical properties of a sandwich structure, including a bending device 1, where the bending device 1 includes a base plate 11, a bending plate 12, a driving assembly 13, and a plurality of base shafts 14.
It should be noted that, in this embodiment, two driving hydraulic cylinders 131 are opened, and the output ends of the driving hydraulic cylinders 131 drive the driving rods 133 to slide in the annular frame 132. The annular frame 132 drives the two ends of the bending plate 12 to rotate around the base shaft 14 to be rotated, and the bending plate 12 bends the sandwich structure.
The two sides of the bent plate 12 are provided with limiting assemblies 15, and the base shafts 14 penetrate through the bent plate 12. Two slide rail 27 bottom all is fixed on base plate 11, two sliding connection locating piece 25 between slide rail 27, locating piece 25 lateral wall joint base shaft 14 one end. A displacement assembly 26 is arranged on one side of the positioning block 25, the bending plate 12 comprises four bottom plates 121, two adjacent bottom plates 121 are hinged to the corresponding base shaft 14, and two limiting through holes 1211 are formed in each of the bottom plates 121 and the base shaft 14.
The stop assembly 15 comprises an extension plate 151, and two pneumatic cylinders 152 are connected to the bottom of the extension plate 151. The output ends of the two pneumatic cylinders 152 are connected with a push plate 153, and the push plate 153 is connected with the extension plate 151 in a sliding manner. The side wall of the push plate 153 is connected with two limit rods 154, and the limit rods 154 extend into the limit through holes 1211.
The brake assembly 22 includes a brake lever 221, and the brake lever 221 is screwed to a side wall of the slip ring 21 and extends to the inside. The displacement assembly 26 comprises a telescopic hydraulic cylinder 261, the side wall of the telescopic hydraulic cylinder 261 is connected with the upper surface of the base plate 11, and the output end of the telescopic hydraulic cylinder 261 is connected with the side wall of the positioning block 25.
It should be noted that, in this embodiment, the bending measurement position can be selected as required, for example, the middle portion of the bending plate 12 is selected as the bending portion, and the left and right pneumatic cylinders 152 are opened. The output end of the pneumatic cylinder 152 drives the push plate 153 and the limiting rod 154 to move, the limiting rod 154 slides in the limiting through hole 1211, the bottom plate 121 at the left end and the bottom plate 121 adjacent to the bottom plate 121 at the right end are limited into a whole, the base shaft 14 in the middle of the bent plate 12 serves as the base shaft 14 to be rotated, and the telescopic hydraulic cylinders 261 at the two ends of the base shaft 14 except the base shaft 14 to be rotated drive the positioning blocks 25 to move outwards, so that position selection can be completed.
In the present embodiment, fixing means 2 are provided at both ends of each of the base shafts 14. The fixing device 2 comprises a sliding ring 21 and two sliding rails 27, wherein the sliding ring 21 is sleeved on the side wall of the base shaft 14. The bottom of the slip ring 21 is provided with a brake assembly 22, and the top of the slip ring 21 is provided with a knife holder 23. A lifting component 24 is arranged between the sliding ring 21 and the knife pressing frame 23, and two anti-rotation grooves 211 are formed in the inner wall of the sliding ring 21.
In addition, the anti-rotation groove 211 is in matching contact with an anti-rotation boss 212, and the anti-rotation boss 212 is disposed on the side wall of the base shaft 14. The side wall of the slip ring 21 contacts the spring 213, and the spring 213 is sleeved on the outer wall of the base shaft 14. The lifting assembly 24 comprises a first square sleeve 241 and a threaded rod 242, and the bottom of the first square sleeve 241 is connected with the side wall of the slip ring 21.
The inner wall of the first square sleeve 241 is sleeved with a second square sleeve 243, and the threaded rod 242 is in threaded connection with the second square sleeve 243 and extends to the lower part to be rotatably connected with the bottom of the inner wall of the first square sleeve 241. The side wall of the second square sleeve 243 is connected with the pressing tool holder 23, the bottom of the pressing tool holder 23 is provided with a sliding groove 231, the sliding groove 231 is connected with a pressing block 232 in a sliding mode, the bottom of the pressing block 232 is provided with a base plate 233, and the bottom of the base plate 233 is connected with the side wall of the sliding ring 21.
It should be noted that, in the present embodiment, the sandwich structure to be measured is placed on the curved plate 12, and the plurality of slip rings 21 are pulled out. The slide ring 21 is slid until the first square sleeve 241 side wall contacts the sandwich side wall to be measured and the brake lever 221 is tightened, selecting the appropriate press block 232, e.g. with a semicircular head. The pressing block 232 is then slidably connected to the sliding groove 231, and the threaded rod 242 is rotated. The threaded rod 242 drives the second square sleeve 243 to move downwards, and the second square sleeve moves to the pressing block 232 to press and fix the sandwich structure to be measured on the base plate 233.
According to the above embodiment, there will be provided a test method for a test fixture for a bending mechanical property of a sandwich structure, including the steps of:
the method comprises the following steps: clamping, namely placing the sandwich structure to be measured on a bending plate, pulling a plurality of slip rings outwards, screwing a brake rod when the slip rings slide to the side wall of the first square sleeve to be contacted with the side wall of the sandwich structure to be measured, selecting a proper pressing block, such as a pressing block with a semicircular head, connecting the pressing block with a sliding groove in a sliding manner, rotating a threaded rod, driving a second square sleeve to move downwards, moving to the pressing block, pressing and fixing the sandwich structure to be measured on a base plate, and finishing clamping;
step two: positioning, namely selecting a bending measurement position as required, if the middle part of a bending plate is selected as a bending position, starting pneumatic cylinders on the left side and the right side at the moment, driving a push plate and a limiting rod to move by the output ends of the pneumatic cylinders, sliding the limiting rod in a limiting through hole, limiting a left end bottom plate and an adjacent bottom plate thereof as well as a right end bottom plate and an adjacent bottom plate thereof into a whole, taking a base shaft in the middle of the bending plate as a base shaft to be rotated, and driving a positioning block to move outwards by telescopic hydraulic cylinders at two ends of the base shaft except the base shaft to be rotated so as;
step three: crooked, open two drive hydraulic cylinders, the drive hydraulic cylinder output drives the actuating lever and slides in the annular frame, the annular frame drives crooked board both ends and rotates around waiting to rotate the base shaft, crooked board is crooked to sandwich structure, can reset and can fix a position the step again after the measurement finishes so that carry out the crooked measurement of different positions, if select right side base shaft as waiting to bend the position, the accessible gag lever post is spacing into whole with the three bottom plate in left side, can right side base shaft regard as waiting to rotate the base shaft this moment.
The specific process of the invention is as follows:
placing the sandwich structure to be measured on the bending plate 12, pulling a plurality of slip rings 21 outwards, screwing the brake rod 221 when the slip rings 21 slide to the side wall of the first square sleeve 241 contacts the side wall of the sandwich structure to be measured, selecting a proper press block 232, for example, the head of the press block 232 is semicircular, connecting the press block 232 with the sliding chute 231 in a sliding manner, rotating the threaded rod 242, driving the second square sleeve 243 to move downwards, moving the press block 232 to tightly press and fix the sandwich structure to be measured on the backing plate 233;
selecting a bending measurement position as required, for example, selecting the middle part of the bending plate 12 as a bending position, then opening the pneumatic cylinders 152 at the left and right sides, the output end of the pneumatic cylinder 152 driving the push plate 153 and the limiting rod 154 to move, the limiting rod 154 sliding in the limiting through hole 1211 and limiting the left end bottom plate 121 and the adjacent bottom plate 121 as a whole, then the base shaft 14 in the middle of the bending plate 12 being used as the base shaft 14 to be rotated, the telescopic hydraulic cylinders 261 at the two ends of the base shaft 14 except the base shaft 14 to be rotated driving the positioning block 25 to move outwards, and then completing the position selection;
two driving hydraulic cylinders 131 are opened, the output ends of the driving hydraulic cylinders 131 drive the driving rods 133 to slide in the annular frames 132, the annular frames 132 drive the two ends of the bending plates 12 to rotate around the base shaft 14 to be rotated, the bending plates 12 bend the interlayer structure, the bending plates can reset after measurement and can be reset again for position selection so as to perform bending measurement at different positions, if the right base shaft 14 is selected as the position to be bent, the left three bottom plates 121 can be limited into a whole through the limiting rods 154, and the right base shaft 14 can serve as the base shaft 14 to be rotated at the moment.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The test tool for the bending mechanical property of the sandwich structure comprises a bending device (1) and is characterized in that the bending device (1) comprises a base plate (11), a bending plate (12), a driving assembly (13) and a plurality of base shafts (14), the driving assembly (13) is arranged at the bottom of the base plate (11), the execution ends of the two driving assemblies (13) penetrate through the base plate (11) and are connected with the bottom of the bending plate (12), limiting assemblies (15) are arranged on two sides of the bending plate (12), the base shafts (14) penetrate through the bending plate (12), and fixing devices (2) are arranged at two ends of each base shaft (14);
fixing device (2) include sliding ring (21) and two slide rail (27), sliding ring (21) cup joint basic shaft (14) lateral wall, sliding ring (21) bottom is equipped with braking component (22), sliding ring (21) top is equipped with clamping frame (23), sliding ring (21) with be equipped with lifting unit (24) between clamping frame (23), two slide rail (27) bottom is all fixed on base plate (11), two sliding connection has locating piece (25) between slide rail (27), the lateral wall joint of locating piece (25) is in the one end of basic shaft (14) one side of locating piece (25) is equipped with displacement subassembly (26).
2. The tooling for testing the bending mechanical property of the sandwich structure according to claim 1, wherein the bending plate (12) comprises four bottom plates (121), two adjacent bottom plates (121) are hinged to the corresponding base shaft (14), and two limiting through holes (1211) are formed in each of the bottom plates (121) and the base shaft (14).
3. The tool for testing the bending mechanical property of the sandwich structure according to claim 1, wherein the driving assembly (13) comprises a driving hydraulic cylinder (131) and an annular frame (132), the annular frame (132) is connected with one end of the bottom of the bending plate (12), the driving hydraulic cylinder (131) is fixed at the bottom of the base plate (11), an output end of the driving hydraulic cylinder (131) penetrates through the base plate (11) and extends to the upper part to be connected with a driving rod (133), and the driving rod (133) is connected with the inner wall of the annular frame (132) in a sliding manner.
4. The tooling for testing the bending mechanical property of the sandwich structure according to claim 2, wherein the limiting component (15) comprises an extension plate (151), the bottom of the extension plate (151) is connected with two pneumatic cylinders (152), the output ends of the two pneumatic cylinders (152) are both connected with a push plate (153), the push plate (153) is connected with the extension plate (151) in a sliding manner, the side wall of the push plate (153) is connected with two limiting rods (154), and the limiting rods (154) extend into the limiting through holes (1211).
5. The tooling for testing the bending mechanical property of the sandwich structure according to claim 1, wherein the inner wall of the slip ring (21) is provided with two anti-rotation grooves (211), the anti-rotation grooves (211) are in fit contact with anti-rotation bosses (212), the anti-rotation bosses (212) are arranged on the side wall of the base shaft (14), the side wall of the slip ring (21) is in contact with the spring (213), and the spring (213) is in contact with the outer wall of the base shaft (14).
6. The test tool for bending mechanical properties of sandwich structure according to claim 1, wherein the brake assembly (22) comprises a brake rod (221), and the brake rod (22I) is in threaded connection with the side wall of the slip ring (21) and extends to the inside.
7. The test tool for the bending mechanical property of the sandwich structure according to claim 1, wherein the lifting assembly (24) comprises a first square sleeve (241) and a threaded rod (242), the bottom of the first square sleeve (241) is connected with the side wall of the slip ring (21), a second square sleeve (243) is sleeved on the inner wall of the first square sleeve (241), the threaded rod (242) is in threaded connection with the second square sleeve (243), extends to the lower part and is rotatably connected with the bottom of the inner wall of the first square sleeve (241), and a cutter pressing frame (23) is connected with the side wall of the second square sleeve (243).
8. The tool for testing the bending mechanical property of the sandwich structure according to claim 1, wherein a sliding groove (231) is formed in the bottom of the tool holder (23), the sliding groove (231) is slidably connected with the pressing block (232), a base plate (233) is formed in the bottom of the pressing block (232), and the bottom of the base plate (233) is connected with the side wall of the sliding ring (21).
9. The tool for testing the bending mechanical property of the sandwich structure according to claim 1, wherein the displacement assembly (26) comprises a telescopic hydraulic cylinder (261), the side wall of the telescopic hydraulic cylinder (261) is connected with the upper surface of the base plate (11), and the output end of the telescopic hydraulic cylinder (261) is connected with the side wall of the positioning block (25).
10. A test method for a test fixture for a bending mechanical property of a sandwich structure, which is characterized in that the test fixture for the bending mechanical property of the sandwich structure is the test fixture for the bending mechanical property of the sandwich structure according to any one of claims 1 to 9, and the method comprises the following steps:
the method comprises the following steps: clamping, namely placing the sandwich structure to be measured on a bent plate, pulling a plurality of slip rings outwards, and screwing a brake rod when the slip rings slide until the side wall of the first square sleeve contacts the side wall of the sandwich structure to be measured; the pressing block is connected with the sliding groove in a sliding mode, the threaded rod is rotated, the threaded rod drives the second square sleeve to move downwards, and the second square sleeve moves to the pressing block to tightly press and fix the sandwich structure to be measured on the base plate, so that clamping is completed;
step two: positioning, namely selecting a bending measurement position as required, starting pneumatic cylinders on the left side and the right side, driving a push plate and a limiting rod to move by the output ends of the pneumatic cylinders, enabling the limiting rod to slide in a limiting through hole, limiting a bottom plate at the left end and a bottom plate adjacent to the bottom plate at the left end, and limiting a bottom plate at the right end and a bottom plate adjacent to the bottom plate at the right end into a whole, taking a base shaft in the middle of a bending plate as a base shaft to be rotated, and driving a positioning block to move outwards by telescopic hydraulic cylinders at two ends of the base shaft except the base shaft to be rotated, so;
step three: bending, namely starting the two driving hydraulic cylinders, driving the output ends of the driving hydraulic cylinders to drive the driving rods to slide in the annular frame, driving the two ends of the bending plate to rotate around the base shaft to be rotated by the annular frame, and bending the interlayer structure by the bending plate; after the measurement is completed, the positioning step can be reset and the positioning step can be carried out again so as to carry out the bending measurement at different positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110188336.5A CN112986006B (en) | 2021-02-08 | 2021-02-08 | Test tool and test method for bending mechanical property of sandwich structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110188336.5A CN112986006B (en) | 2021-02-08 | 2021-02-08 | Test tool and test method for bending mechanical property of sandwich structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112986006A true CN112986006A (en) | 2021-06-18 |
| CN112986006B CN112986006B (en) | 2024-03-29 |
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| CN113340581A (en) * | 2021-07-07 | 2021-09-03 | 邢台职业技术学院 | Testing device and testing method for testing strength of blades of water turbine |
| CN118665943A (en) * | 2024-07-03 | 2024-09-20 | 启东市华美文化用品有限公司 | Intelligent conveying equipment for production of literature articles |
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| CN113340581A (en) * | 2021-07-07 | 2021-09-03 | 邢台职业技术学院 | Testing device and testing method for testing strength of blades of water turbine |
| CN118665943A (en) * | 2024-07-03 | 2024-09-20 | 启东市华美文化用品有限公司 | Intelligent conveying equipment for production of literature articles |
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