CN107831081B - Multifunctional detection device for propeller strut connecting piece of agricultural facility structure - Google Patents
Multifunctional detection device for propeller strut connecting piece of agricultural facility structure Download PDFInfo
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- CN107831081B CN107831081B CN201711257890.4A CN201711257890A CN107831081B CN 107831081 B CN107831081 B CN 107831081B CN 201711257890 A CN201711257890 A CN 201711257890A CN 107831081 B CN107831081 B CN 107831081B
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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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
- G01N2203/0025—Shearing
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Abstract
The invention discloses a multifunctional detection device for a propeller strut connecting piece of an agricultural facility structure, which comprises a universal testing machine, and further comprises an upper clamp, a connecting piece and a lower clamp which are sequentially connected from top to bottom, wherein the upper clamp is composed of two regular-edged bosses, the bottom surfaces of the two regular-edged bosses are connected, and the upper regular-edged bosses at the upper end are connectedThe side edge length of platform is long and the side edge length of the positive terrace with lower extreme, the top surface center department of the positive terrace with upper extreme is equipped with a universal testing machine connecting piece, it is one to have seted up on the lower bottom surface of the positive terrace with lower extreme and is
The groove that appears, the both sides of lower extreme positive arris platform respectively through the connecting block with the connecting piece upper end links to each other, the connecting block is isosceles trapezoid structure, one side pass through the bolt with the positive arris platform of lower extreme links to each other, and the opposite side pass through the connecting rod with the connecting piece upper end links to each other, the connecting piece lower extreme through the installation pole with the lower part anchor clamps link to each other. The invention can analyze the space stress of the propeller strut connecting piece of the agricultural facility structure.
Description
Technical Field
The invention relates to the field of building material performance detection, in particular to a multifunctional detection device for a propeller strut connecting piece of an agricultural facility structure.
Background
The standard that the design construction of novel agricultural greenhouse in this stage was based on mainly regards load standard and steel construction design and construction standard as the owner, so cause the measuring means of novel agricultural greenhouse structural component-propeller strut connecting piece to only rely on raw and other materials to detect to be main, because the performance of raw and other materials is single, can not consider according to the space load that the propeller strut connecting piece receives during the design, cause the design singleness, the propeller strut connecting piece can not adapt to local load characteristics, or the design is bigger than normal and causes the waste, or the design is littleer, cause the influence to greenhouse structure overall stability.
Disclosure of Invention
In order to solve the problems, the invention provides a multifunctional detection device for a propeller strut connecting piece of an agricultural facility structure.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a multi-functional detection device of agricultural facility structure propeller strut connecting piece, includes universal tester, still includes from last upper portion anchor clamps, connecting piece and the lower part anchor clamps that down connect gradually, upper portion anchor clamps comprise two positive arriss platforms, and the bottom surface of two positive arriss platforms links to each other, and the long and lower side arris length of the long and lower positive arris of side arris length of upper end positive arris platform, the top surface center department of upper end positive arris platform is equipped with a universal tester connecting piece, open on the lower bottom surface of lower end positive arris platformIs provided with a
The two sides of the lower end regular prism table are respectively connected with the upper end of the connecting piece through connecting blocks, the connecting blocks are in an isosceles trapezoid structure, one side edge of each connecting block is connected with the lower end regular prism table through a bolt, the other side edge of each connecting block is connected with the upper end of the connecting piece through a connecting rod, a herringbone frame connecting piece is arranged between each connecting block and the corresponding connecting piece, the lower end of each connecting piece is connected with the lower clamp through a mounting rod, the upper top surface of the lower clamp is provided with a mounting groove matched with the corresponding connecting piece, and the center of the lower bottom surface is provided with a universal testing machine connecting;
the detection method for the propeller strut connecting piece of the agricultural facility structure by using the device comprises the following steps:
s1, connecting two propeller strut connecting pieces with the same specification and size and the like with the upper test connecting piece symmetrically by using a high-strength bolt;
s2, connecting the propeller strut connecting piece and the connecting piece for the test through a common bolt, connecting the connecting piece for the test at the lower part and the connecting clamp for the test at the lower part, and simultaneously connecting the upper clamp and the lower clamp with a universal testing machine respectively;
s3, in the test process, the upper clamp is fixed, a vertical downward load is applied to the lower clamp through a universal testing machine, when the fixing position of the member bolt is deformed, the test is stopped, the measured force is 2 times of the limit load borne by the fixing position of the member bolt at the node structure when the fixing position of the member bolt is deformed, and the required shearing strength of the bolt fixing position of the propeller strut connecting piece is divided by 2.
Or, the method for detecting the propeller strut connecting piece of the agricultural facility structure by using the device comprises the following steps:
s1, connecting two propeller strut connecting pieces with the same specification and size and the like with the upper test connecting piece symmetrically by using a common bolt;
s2, connecting the propeller strut connecting piece and the connecting piece for the test through a common high-strength bolt, connecting the connecting piece for the test at the lower part and the test connecting clamp at the lower part, and simultaneously connecting the upper clamp and the lower clamp with a universal testing machine respectively;
s3, in the test process, the lower clamp is fixed, the upper clamp is loaded vertically and upwards through a universal testing machine, when the connecting position of the oblique rod of the component deforms, the test is stopped, the measured force is 2 times of the limit load borne when the connecting position of the oblique rod of the component deforms at the node structure, and the required shearing strength of the connecting position of the oblique rod of the propeller strut connecting piece is divided by 2.
Preferably, the two regular rib platforms are integrally formed.
Preferably, the upper end of the connecting rod is provided with a connecting hole channel matched with the connecting rod, one end of the connecting rod is in threaded connection with a bolt, and the other end of the connecting rod sequentially penetrates through the propeller strut connecting piece on one side, the side edge of the connecting block on one side, the connecting hole channel, the propeller strut connecting piece on the other side and the side edge of the connecting block on the other side to be in threaded connection with the bolt.
Preferably, bolt holes matched with the bolts are formed in the two sides of the lower end regular prism table, the upper end and the lower end of the connecting piece, the upper top surface of the upper clamp and the lower bottom surface of the lower clamp.
Preferably, a plurality of mounting holes are horizontally formed in the lower end of the connecting piece, and the lower end of the connecting piece is connected with the mounting grooves through mounting rods.
Preferably, one end of the mounting rod is in threaded connection with a bolt, and the other end of the mounting rod sequentially penetrates through one side surface of the mounting groove, the mounting hole channel and the other side surface of the mounting groove and is in threaded connection with a bolt.
In the scheme, through the design of the fixture for connecting the universal machine and the propeller strut connecting piece in the test, the stress of the propeller strut connecting piece on the space structure can be analyzed through the test, and meanwhile, through the design of the connecting pipe in the fixture connection, the test can meet the requirement that propeller strut connecting pieces with different sizes are tested under the same fixture; the invention of the test method makes the stress characteristics and the damage form of the propeller strut connecting piece analyzed on the spatial level more definite, and provides reliable test method support for the design.
Drawings
Fig. 1 is a schematic overall structure diagram of a multifunctional detection device for a propeller strut connecting piece of an agricultural facility structure according to an embodiment of the invention.
Fig. 2 is a schematic structural view of an upper clamp in an embodiment of the present invention.
FIG. 3 is a side view of an upper clamp in an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a connector according to an embodiment of the present invention.
Fig. 5 is a side view of a connector in an embodiment of the invention.
Fig. 6 is a schematic structural view of a lower clamp in an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a steel structure casing pipe in the embodiment of the invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in figures 1-6, the embodiment of the invention provides a multifunctional detection device for a propeller strut connecting piece of an agricultural facility structure, which comprises a universal testing machine, and further comprises an upper clamp 1, a connecting piece 2 and a lower clamp 3 which are sequentially connected from top to bottom, wherein the upper clamp 1 is composed of two regular prismatic tables, the bottom surfaces of the two regular prismatic tables are connected, the length of the side edge of the upper regular prismatic table is long, the length of the side edge of the lower regular prismatic table is long, a universal testing machine connecting piece 4 is arranged at the center of the top surface of the upper regular prismatic table, and a lower surface of the lower regular prismatic table is provided with a universal testing machine connecting piece 4
The two sides of the lower end regular prism table are respectively connected with the upper end of the connecting piece 2 through connecting blocks 5, each connecting block 5 is of an isosceles trapezoid structure, one side edge of each connecting block is connected with the lower end regular prism table through a bolt, the other side edge of each connecting block is connected with the upper end of the connecting piece 2 through a connecting rod, a herringbone frame connecting piece 10 is installed between each connecting block and the corresponding connecting piece, and the lower end of the connecting piece 2 is connected with the lower end of the corresponding lower prism table through an installing rod 7The portion anchor clamps 3 link to each other, 3 upper tops of lower part anchor clamps seted up with connecting piece matched with mounting groove, lower bottom surface center department is equipped with a universal testing machine connecting piece 8. The two regular prism tables are integrally formed. The upper end of the connecting rod is provided with a connecting hole channel matched with the connecting rod, one end of the connecting rod is in threaded connection with a bolt, and the other end of the connecting rod sequentially penetrates through the propeller strut connecting piece on one side, the side edge of the connecting block on one side, the connecting hole channel, the propeller strut connecting piece on the other side and the side edge of the connecting block on the other side and is in threaded connection with the bolt. Bolt holes 9 matched with the bolts are formed in the two sides of the lower end regular prism table, the upper end and the lower end of the connecting piece, the upper top surface of the upper clamp and the lower bottom surface of the lower clamp. A plurality of mounting holes are horizontally formed in the lower end of the connecting piece, and the lower end of the connecting piece is connected with the mounting grooves through mounting rods. One end of the mounting rod is in threaded connection with a bolt, and the other end of the mounting rod sequentially penetrates through one side surface of the mounting groove, the mounting hole channel and the other side surface of the mounting groove and is in threaded connection with a bolt.
The propeller strut connecting piece bears non-directional wind load and vertical snow load, the stress characteristic of the propeller strut connecting piece is space diversity, so the damage form of the component is divided into a plurality of types, and the specific damage form and the detection method are as follows:
1) shear failure of bolt-in-place
The bolt fixing position is very easy to generate shear deformation under the action of non-directional wind load and snow load due to the pressure action of the inclined pulling supporting member. The detection method can not simply carry out the shear resistance test of the steel, and needs to carry out space loading according to the stress characteristics, and the specific method comprises the following steps:
firstly, two propeller strut connecting pieces with the same specification and size are symmetrically connected with an upper test connecting piece by high-strength bolts. The high-strength bolt is used for completely connecting the upper part, determining that the upper part cannot be damaged and only testing the damaged form of the lower part of the component. Because the sizes of the components are different, in order to facilitate the test, the invention designs a set of steel structure sleeves with consistent outer diameter and variable inner diameter as a connecting structure for installing the propeller strut, for example, a steel pipe with the outer diameter D of the hole unchanged and the inner diameter D changed as shown in figure 7, which can be similar to a star according to the sizes of the components, so that the test is simpler.
Then, the propeller strut connecting member is connected to the test connecting member by a common bolt, and then the lower test connecting member is connected to the lower test connecting jig.
And finally, connecting the upper clamp and the lower clamp with a universal testing machine respectively.
In the test process, the upper device is fixed, a vertical downward load is applied to the lower device through a universal testing machine, when the bolt fixing position of the component is deformed, the test is stopped, the measured force is 2 times of the limit load borne by the bolt fixing position of the component when the bolt fixing position of the component is deformed at the node structure, and the required shearing strength of the bolt fixing position of the propeller strut connecting piece is divided by 2.
2) Shear failure of slash connection
Under the action of non-directional wind load and snow load, the connecting position of the oblique lever is very easy to generate shearing deformation due to the pressure action of the oblique pulling supporting member. The detection method can not simply carry out the shear resistance test of the steel, and needs to carry out space loading according to the stress characteristics, and the specific method comprises the following steps:
firstly, two propeller strut connecting pieces with the same specification and size are symmetrically connected with an upper test connecting piece by using common bolts.
And then, connecting the propeller strut connecting piece with the connecting piece for the test through a common high-strength bolt, wherein the high-strength bolt is used for completely connecting the lower part, so that the propeller strut connecting piece is determined not to be damaged, and only the upper part damage form of the component is tested. Then, the lower test connecting member is connected to the lower test connecting jig.
And finally, connecting the upper clamp and the lower clamp with a universal testing machine respectively.
In the test process, the lower device is fixed, a vertical upward load is applied to the upper device through a universal testing machine, when the connecting position of the member slash deforms, the test is stopped, the measured force is 2 times of the limit load borne when the connecting position of the member slash deforms at the node structure, and the required shear strength of the connecting position of the propeller strut connecting piece slash is divided by 2.
In the concrete implementation, the herringbone frame connecting piece is considered to bear non-directional wind load and vertical snow load, the stress characteristic is space diversity, and the damage forms of the components are various. The design designs a detection device capable of considering the space stress of the component through the symmetry principle, can analyze the space stress of the propeller strut connecting piece of the agricultural facility structure, and designs a detection method through the stress characteristic. A novel detection device and a novel detection method are provided for the design and construction of the propeller strut connecting piece of the novel agricultural greenhouse structure.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (6)
1. The utility model provides a multi-functional detection device of agricultural facility structure propeller strut connecting piece, includes universal tester, its characterized in that still includes from last upper portion anchor clamps, connecting piece and the lower part anchor clamps that down connect gradually, upper portion anchor clamps comprise two positive arriss platforms, and the bottom surface of two positive arriss platforms links to each other, and the side length of the positive arris platform of upper end is longer than the side length of the positive arris platform of lower end, the top surface center department of the positive arris platform of upper end is equipped with a universal tester connecting piece, it is one and to be on the lower bottom surface of the positive arris platform of lower end to have seted up one and is
The two sides of the lower end regular prism table are respectively connected with the upper end of the connecting piece through connecting blocks, the connecting blocks are in an isosceles trapezoid structure, one side edge of each connecting block is connected with the lower end regular prism table through a bolt, the other side edge of each connecting block is connected with the upper end of the connecting piece through a connecting rod, a herringbone frame connecting piece is arranged between each connecting block and the corresponding connecting piece, the lower end of each connecting piece is connected with the lower clamp through a mounting rod, the upper top surface of the lower clamp is provided with a mounting groove matched with the corresponding connecting piece, and the center of the lower bottom surface is provided with a universal testing machine connecting;
the method for detecting the propeller strut connecting piece of the agricultural facility structure by using the detection device comprises the following steps:
s1, connecting two propeller strut connecting pieces with the same specification and size and the like with the upper test connecting piece symmetrically by using a high-strength bolt;
s2, connecting the propeller strut connecting piece and the connecting piece for the test through a common bolt, connecting the connecting piece for the test at the lower part and the connecting clamp for the test at the lower part, and simultaneously connecting the upper clamp and the lower clamp with a universal testing machine respectively;
s3, in the test process, fixing the upper clamp, applying a vertical downward load to the lower clamp through a universal tester, stopping the test when the member bolt fixing position deforms, wherein the measured force is 2 times of the limit load borne by the member bolt fixing position when the member bolt fixing position deforms at the node structure, and the required shearing strength of the bolt fixing position of the propeller strut connecting piece is divided by 2;
or, the method for detecting the propeller strut connecting piece of the agricultural facility structure by using the detection device comprises the following steps:
s1, connecting two propeller strut connecting pieces with the same specification and size and the like with the upper test connecting piece symmetrically by using a common bolt;
s2, connecting the propeller strut connecting piece and the connecting piece for the test through a common high-strength bolt, connecting the connecting piece for the test at the lower part and the test connecting clamp at the lower part, and simultaneously connecting the upper clamp and the lower clamp with a universal testing machine respectively;
s3, in the test process, the lower clamp is fixed, the upper clamp is loaded vertically and upwards through a universal testing machine, when the connecting position of the oblique rod of the component deforms, the test is stopped, the measured force is 2 times of the limit load borne when the connecting position of the oblique rod of the component deforms at the node structure, and the required shearing strength of the connecting position of the oblique rod of the propeller strut connecting piece is divided by 2.
2. The multifunctional inspection device for propeller strut connecting members of agricultural implement structures of claim 1, wherein said two right prisms are integrally formed.
3. The multifunctional inspection device for the propeller strut connecting members of agricultural facility structures of claim 1, wherein the connecting rod is provided at the upper end thereof with a connecting hole passage which is matched with the connecting rod, one end of the connecting rod is connected with a bolt by screw thread, and the other end of the connecting rod passes through the propeller strut connecting member at one side, the side edge of the connecting block at one side, the connecting hole passage, the propeller strut connecting member at the other side and the side edge of the connecting block at the other side in turn and is connected with a bolt by screw thread.
4. The multifunctional inspection device for the propeller strut connecting member of agricultural equipment structure of claim 1, wherein bolt holes for the bolt are formed on both sides of the lower regular prism table, both upper and lower ends of the connecting member, and the upper top surface of the upper clamp and the lower bottom surface of the lower clamp.
5. The multifunctional detecting device for the propeller strut connecting piece of the agricultural facility structure of claim 1, wherein the lower end of the connecting piece is horizontally provided with a plurality of mounting holes, and the lower end of the connecting piece is connected with the mounting holes through mounting rods.
6. The multifunctional detecting device for the propeller strut connecting member of the agricultural facility structure of claim 5, wherein one end of the mounting rod is connected with a bolt by screw thread, and the other end of the mounting rod passes through one side surface of the mounting groove, the mounting hole channel and the other side surface of the mounting groove in sequence and is connected with a bolt by screw thread.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711257890.4A CN107831081B (en) | 2017-11-24 | 2017-11-24 | Multifunctional detection device for propeller strut connecting piece of agricultural facility structure |
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| CN201711257890.4A CN107831081B (en) | 2017-11-24 | 2017-11-24 | Multifunctional detection device for propeller strut connecting piece of agricultural facility structure |
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| CN107831081B true CN107831081B (en) | 2020-05-12 |
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| CN201072380Y (en) * | 2007-09-12 | 2008-06-11 | 扬州大学 | Clamper of nail connection node test fixture |
| KR100920570B1 (en) * | 2007-12-07 | 2009-10-08 | 주식회사 포스코 | Apparatus for fixing specimen having a curved surface |
| CN104792613B (en) * | 2015-05-08 | 2017-07-14 | 沈阳工业大学 | Pyramid shape Analysis of Concrete Tensile piece fixture |
| CN204831900U (en) * | 2015-06-05 | 2015-12-02 | 葛洲坝集团试验检测有限公司 | Steel bar anchoring board tensile test auxiliary device |
| CN106289977B (en) * | 2016-08-15 | 2023-02-28 | 南宁学院 | Bolt concrete tensile test device and test method |
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Effective date of registration: 20211201 Address after: 257000 Room 102, block D, e-commerce headquarters base, Zhizhi Road, agricultural high tech industry demonstration zone, Guangrao County, Dongying City, Shandong Province Patentee after: Shandong Aishu Biotechnology Development Co.,Ltd. Address before: 262700 No. 166 Xueyuan Road, Shouguang City, Shandong Province Patentee before: WEIFANG University OF SCIENCE & TECHNOLOGY |
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