CN107340108B - Shear test tool for load lock - Google Patents
Shear test tool for load lock Download PDFInfo
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- CN107340108B CN107340108B CN201710717529.9A CN201710717529A CN107340108B CN 107340108 B CN107340108 B CN 107340108B CN 201710717529 A CN201710717529 A CN 201710717529A CN 107340108 B CN107340108 B CN 107340108B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application discloses a shear test frock for load lock, including the upper joint, be equipped with the lower clutch under the upper joint, be equipped with the reverse U-shaped on the upper joint and lead to the groove, be equipped with the U-shaped on the lower clutch and lead to the groove, be equipped with spacing piece between reverse U-shaped leads to groove and the U-shaped and lead to the groove, spacing piece includes left cutter and right cutter that sets gradually from left to right, the pin joint between left side wall and the left cutter of reverse U-shaped leads to the groove, the pin joint between the right side wall in right cutter and the U-shaped deep groove, be equipped with first round hole on the left cutter, first round hole is used for down the lock body of lock body to pass through, be equipped with the second through-hole on the right cutter, the second through-hole is used for the locking nail of lock body to pass through, still be equipped with the screw on left cutter and the right cutter. The shear test tool in the scheme is arranged between the upper clamp and the lower clamp of the tension machine, so that the force bearing lock can be subjected to shear force test.
Description
Technical Field
The invention relates to a test tool, in particular to a shear test tool for a load lock.
Background
In an aerospace vehicle, a luggage case for storing luggage or sundries must be locked and articles stored therein are not to fall off, a force bearing lock is adopted to lock a case cover and the case body, the force bearing lock comprises a lower lock body and an upper lock body, annular bosses are arranged on the lower lock body and the upper lock body for installation convenience, screw holes are arranged on the annular bosses, the annular bosses on the lower lock body and the lower sandwich plate of the case body are in threaded installation, the annular bosses on the upper lock body and the upper sandwich plate of the case cover are in threaded installation, locking nails of the upper lock body are inserted into rectangular grooves of the lower lock body, limiting blocks are arranged on edges of the rectangular grooves, the locking nails of the upper lock body are rotated to enable the locking nails to rotate for 90 degrees, the locking nails are rotated to be below the limiting blocks, and therefore the force bearing lock can be locked, an annular groove is formed between the lower lock body and the annular bosses of the upper sandwich plate and the lower sandwich plate are attached to the side walls of the groove, the upper sandwich plate and the lower sandwich plate are respectively abutted against the side walls of the groove, and accordingly the luggage case cover is prevented from being separated from the case body, and the sundries are always limited within a certain closed space range.
In the use process, the bearing lock mainly receives shearing force, and the failure reason is also because the bearing lock is destroyed because of not bearing too big shearing force, therefore, the reliability of bearing lock is the key of guaranteeing that the article of depositing can not fall out. At present, a tensile machine is generally adopted to carry out mechanical property tests such as stretching, compression, bending, shearing, tearing and stripping on various test materials, an upper clamp and a lower clamp are arranged on the tensile machine, the test materials are fixed between the upper clamp and the lower clamp, the upper clamp pulls the test materials to carry out the test, after an upper lock body and an upper lock body of the bearing lock with different specifications are locked, the outer diameters of grooves are the same, but the lengths are different, and at present, no special tool for installing the bearing lock between the upper clamp and the lower clamp is available.
Disclosure of Invention
The invention aims to provide a shear test tool for a load lock, which is used for testing the shear force of the load lock.
In order to achieve the above object, the present invention provides the following solutions: a shear test frock for load lock, including the upper joint, be equipped with the lower clutch under the upper joint, be equipped with the U-shaped that falls on the upper joint and lead to the groove, be equipped with the U-shaped on the lower clutch and lead to the groove, it leads to the spacing piece to fall to be equipped with between groove and the U-shaped through groove, the spacing piece sets gradually left cutter and right cutter including controlling to the right side, the pin joint is between left side wall and the left cutter of falling U-shaped through groove, the pin joint is between the right side wall in right cutter and the U-shaped deep groove, be equipped with first round hole on the left cutter, first round hole is used for down the lock body to pass through, be equipped with the second through-hole on the right cutter, the second through-hole is used for going up the locking nail of lock body and passes through, still be equipped with the screw on left cutter and the right cutter.
The working principle of the invention is as follows: when the maximum breaking shear force which can be born by the load lock is measured, the left side wall of the inverted U-shaped through groove is in pin joint with the left cutter, the right cutter is in pin joint with the right side wall of the U-shaped through groove, the upper joint is connected to the upper clamp, the lower joint is connected to the lower clamp, and the inverted U-shaped groove corresponds to the U-shaped groove, so that the tool can be installed on the tension machine; after the lock body of the lower lock body passes through the first round hole, the screw bolts are screwed into the screw holes on the annular boss of the lower lock body and the screw holes on the left cutter in sequence, so that the lower lock body is fixed on the left cutter, the lock pin of the upper lock body passes through the second round hole and is inserted into the rectangular groove of the lower lock body, the lock pin is rotated to lock the bearing lock, the screw bolts are screwed into the screw holes on the annular boss of the upper lock body and the right cutter in sequence, so that the upper lock body is fixed on the right cutter, and the bearing lock can be fixed on the tool, and at the moment, the left cutter and the right cutter are positioned in the annular groove between the annular bosses of the lower lock body and the upper lock body. Starting a tensile machine, wherein an upper clamp pulls an upper joint to move upwards, the upper joint drives a left cutter to move upwards, a lower lock body fixed on an upper section is subjected to upward tensile force, the upper lock body is fixed on a right cutter, the right cutter is fixed on a lower joint, the lower joint is fixed on a lower clamp, and a downward reaction force is generated on the upper lock body, so that a shearing force for a bearing lock is formed, and the tensile machine measures the shearing force in the pulling process.
The invention has the beneficial effects that: 1. in this scheme, fix down the lock body on left cutter, go up the lock body and fix on right cutter, rotatory locking nail makes the load lock pin the back, starts the pulling machine after, goes up anchor clamps pulling upper junction and upwards moves, and lower lock body receives the ascending pulling force of direction, and right cutter is fixed down the joint, and the lower joint is fixed on lower anchor clamps, produces a reaction force down on last lock body, alright provide a frock like this and carry out the shear force measurement to the load lock.
Further, the upper joint and the lower joint are respectively provided with a threaded column. The upper clamp and the lower clamp of the tension machine are provided with screw holes matched with the screw columns, the screw columns are screwed into the corresponding screw holes of the upper clamp and the lower clamp, so that the upper joint is connected to the upper clamp, the lower joint is connected to the lower clamp, the assembly and the disassembly are convenient, meanwhile, the connection between the screw columns and the screw holes is reliable, and the tension can be effectively transferred to the bearing lock when the upper clamp is pulled.
Further, the limiting piece further comprises a gasket arranged on the left side of the left cutter, and a third round hole for the lower lock body to pass through is formed in the gasket. After the lock body of the lower lock body passes through the third round hole and the first round hole, the lower lock body is fixed in the screw hole on the annular boss of the lower lock body, the screw hole on the gasket and the screw hole on the left cutter by using the stud, and after the upper lock body is fixed on the right cutter, the lock nail is rotated and the bearing lock is locked; the gasket, left cutter and right cutter are located the annular groove, in order to simulate the service conditions of load lock at the suitcase, when carrying out the shear force test to the load lock of different specifications, the width of annular groove is different, the width of left cutter and right cutter is unchangeable, adjust the width of gasket, the width of messenger's gasket, the sum of the width of left cutter and the width of right cutter equals the width of annular groove, spacing piece and holding chamber support, gasket and left cutter laminating, left cutter and right cutter laminating, when carrying out the shear force test, gasket and left cutter are equivalent to down the sandwich panel, left cutter is equivalent to the sandwich panel, the pulling force that goes up the anchor clamps and applys is concentrated on the contact surface of left cutter and right cutter, similar with the service conditions of load lock on the suitcase, the shear strength under the shear strength that measures can reflect its true state.
Further, the outer surfaces of the right cutter and the left cutter are provided with smooth layers. In the pulling process of the pulling machine, the left cutter is attached to the right cutter, a friction force opposite to the pulling force is generated between the left cutter and the right cutter, and the friction force is reduced by arranging the smooth layer, so that the accuracy of the shearing force result of the test is ensured.
Drawings
FIG. 1 is a schematic cross-sectional view of a load lock installed in a luggage case;
FIG. 2 is a front view of a shear test tooling for a load lock of the present invention;
fig. 3 is a schematic view of a partial cross-section of the load lock of fig. 2.
Detailed Description
The invention is described in further detail below by way of specific embodiments:
reference numerals in the drawings of the specification include: the lower lock body 1, the lock pin 2, the annular boss 3, the upper lock body 4, the upper sandwich plate 5, the lower sandwich plate 6, the limiting block 7, the U-shaped through groove 8, the lower joint 9, the cylindrical pin 10, the gasket 11, the upper joint 12, the inverted U-shaped through groove 13, the left cutter 14, the right cutter 15 and the threaded column 16.
An embodiment is substantially as shown in fig. 1, 2 and 3: a shear test frock for load lock, including top connection 12, be equipped with the lower clutch 9 under the top connection 12, be equipped with down U-shaped logical groove 13 on the top connection 12, be equipped with U-shaped logical groove 8 on the lower clutch 9, be equipped with the spacing piece between the logical groove of down U-shaped 13 and the logical groove of U-shaped 8, the spacing piece includes that set gradually gasket 11 from left to right, left side sword 14 and right sword 15, connect through cylindric lock 10 between the left side wall of the logical groove of down U-shaped 13, connect through cylindric lock 10 between gasket 11 and the left sword 14, right side wall of right sword 15 and U-shaped deep groove, be equipped with first round hole on the left sword 14, first round hole is used for down lock body 1's lock body to pass through, be equipped with the second through-hole on the right sword 15, the second through-hole is used for going up lock nail 2 of lock body 4 to pass through, still be equipped with the screw on left sword 14 and the right sword 15, still be equipped with the screw on the right sword 15, the surface of right sword 15 and left side sword 11 and left side sword 15 are equipped with the screw, the smooth surface of left side 15 and left side 14 is equipped with ceramic 12 and connect with down the top connection 9.
When the maximum breaking shear force which can be born by the load lock is measured, screw holes matched with the threaded columns 16 are formed in the upper clamp and the lower clamp of the tension machine, the threaded columns 16 are screwed into the corresponding screw holes in the upper clamp and the lower clamp, the upper joint 12 is connected to the upper clamp, the lower joint 9 is connected to the lower clamp, and the inverted U-shaped groove corresponds to the U-shaped groove, so that the tool can be installed on the tension machine; after the lock body of the lower lock body 1 passes through the third round hole and the first round hole, the bolts are screwed into the screw holes on the annular boss 3 of the lower lock body 1, the screw holes on the gasket 11 and the screw holes on the left cutter 14 in sequence, so that the lower lock body 1 is fixed on the left cutter 14, the lock pin of the upper lock body 4 passes through the second round hole and the lock pin 2 is inserted into the rectangular groove of the lower lock body 1, the lock pin 2 of the upper lock body 4 is rotated to enable the lock pin 2 to rotate by 90 degrees, the lock pin 2 is rotated to the lower side of the limiting block 7, the lock pin 2 is limited by the limiting block 7, thus the bearing lock can be locked, and the bolts are screwed into the screw holes on the annular boss 3 of the upper lock body 4 and the screw holes on the right cutter 15 in sequence, so that the upper lock body 4 is fixed on the right cutter 15, and at the moment, the gasket 11, the left cutter 14 and the right cutter 15 are positioned in the annular groove between the annular boss 3 of the lower lock body 1 and the upper lock body 4. When carrying out the shear force test to the load lock of different specifications, the width of annular groove is different, the width of left cutter 14 and right cutter 15 is unchangeable, adjust the width of gasket 11, make the width of gasket 11, the width of left cutter 14 and the width of right cutter 15 sum equals the width of annular groove, spacing piece and holding chamber support, gasket 11 and left cutter 14 laminating, left cutter 14 and right cutter 15 laminating, when carrying out the shear force test, gasket 11 and left cutter 14 are equivalent to down sandwich panel 6, left cutter 14 is equivalent to sandwich panel 5, the pulling force that upper clamp applys is concentrated on the contact surface of left cutter 14 and right cutter 15, similar with the service condition of load lock on the suitcase, the shear strength that measures can reflect its shear strength under the true state.
Starting a pulling machine, wherein an upper clamp pulls an upper joint 12 to move upwards, the upper joint 12 drives a left cutter 14 to move upwards, a lower lock body 1 fixed on an upper section is subjected to upward pulling force, an upper lock body 4 is fixed on a right cutter 15, the right cutter 15 is fixed on a lower joint 9, the lower joint 9 is fixed on the lower clamp, a downward reaction force is generated on the upper lock body 4, and therefore a shearing force for a bearing lock is formed, and the pulling machine measures the shearing force in the pulling process.
The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (3)
1. A shear test frock for load lock, its characterized in that: the novel lock comprises an upper joint, a lower joint is arranged right below the upper joint, an inverted U-shaped through groove is arranged on the upper joint, a U-shaped through groove is arranged on the lower joint, a limiting piece is arranged between the inverted U-shaped through groove and the U-shaped through groove, the limiting piece comprises a left cutter and a right cutter which are sequentially arranged from left to right, a pin joint is arranged between the left side wall of the inverted U-shaped through groove and the left cutter, a pin joint is arranged between the right cutter and the right side wall of the U-shaped deep groove, a first round hole is formed in the left cutter, the first round hole is used for the lock body of the lower lock body to pass through, a second through hole is formed in the right cutter, and a screw hole is further formed in the left cutter and the right cutter; the limiting piece further comprises a gasket arranged on the left side of the left cutter, a third round hole for the lock body of the lower lock body to pass through is formed in the gasket, and a screw hole is formed in the gasket; the gasket, the left cutter and the right cutter are positioned in the annular groove, when the bearing locks of different specifications are subjected to shear force test, the widths of the annular groove are different, the widths of the left cutter and the right cutter are unchanged, and the width of the gasket is adjusted, so that the sum of the width of the gasket, the width of the left cutter and the width of the right cutter is equal to the width of the annular groove.
2. The shear test tooling for a load lock of claim 1, wherein: threaded columns are arranged on the upper joint and the lower joint.
3. The shear test tooling for a load lock of claim 2, wherein: the outer surfaces of the right cutter and the left cutter are provided with smooth layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710717529.9A CN107340108B (en) | 2017-08-21 | 2017-08-21 | Shear test tool for load lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710717529.9A CN107340108B (en) | 2017-08-21 | 2017-08-21 | Shear test tool for load lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107340108A CN107340108A (en) | 2017-11-10 |
| CN107340108B true CN107340108B (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710717529.9A Active CN107340108B (en) | 2017-08-21 | 2017-08-21 | Shear test tool for load lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107340108B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349582A (en) * | 1999-03-03 | 2002-05-15 | 总锁公司 | Shearable lock assembly and method of manufacture |
| CN104713788A (en) * | 2015-03-30 | 2015-06-17 | 西安长庆科技工程有限责任公司 | Strain-control type tension-shearing direct shear apparatus |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005265806A (en) * | 2004-03-22 | 2005-09-29 | Shimadzu Corp | Fixture for shearing test |
| CN201107242Y (en) * | 2007-10-31 | 2008-08-27 | 天津市天发重型水电设备制造有限公司 | Used for hydraulic turbine shear pin test fixture |
| CN102854068B (en) * | 2012-09-10 | 2014-10-15 | 昆山吉海实业公司 | Container lock shearing strength detection tooling method |
| CN203287247U (en) * | 2013-06-08 | 2013-11-13 | 武汉钢铁(集团)公司 | Clamp for testing shear performance of screws |
| US9377384B2 (en) * | 2014-05-01 | 2016-06-28 | Metriguard Inc | Rail shear tester apparatus with multiple loading configurations |
| CN203929532U (en) * | 2014-07-08 | 2014-11-05 | 河南理工大学 | A kind of jointing testing device for shear strength |
| CN205506581U (en) * | 2016-03-08 | 2016-08-24 | 哈尔滨飞机工业集团有限责任公司 | Combined material presses and cuts performance test frock |
| CN105628496A (en) * | 2016-03-22 | 2016-06-01 | 北京航空航天大学 | Multifunctional shearing test fixture used for composite material parameter identification |
| CN205506557U (en) * | 2016-04-13 | 2016-08-24 | 浙江省建筑科学设计研究院有限公司 | Anti shear test anchor clamps of heat -insulating aluminum alloy section material |
| CN106018127B (en) * | 2016-06-06 | 2018-12-25 | 贵州航太精密制造有限公司 | A kind of shear test frock |
| CN106092770A (en) * | 2016-06-07 | 2016-11-09 | 中国海洋石油总公司 | A kind of box Shearing strength test method |
| CN206038452U (en) * | 2016-06-28 | 2017-03-22 | 上海国靖机械设备有限公司 | Twist lock shear strength test device |
| CN207215412U (en) * | 2017-08-21 | 2018-04-10 | 贵州航太精密制造有限公司 | A kind of shear test frock for bearing lock |
-
2017
- 2017-08-21 CN CN201710717529.9A patent/CN107340108B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349582A (en) * | 1999-03-03 | 2002-05-15 | 总锁公司 | Shearable lock assembly and method of manufacture |
| CN104713788A (en) * | 2015-03-30 | 2015-06-17 | 西安长庆科技工程有限责任公司 | Strain-control type tension-shearing direct shear apparatus |
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| CN107340108A (en) | 2017-11-10 |
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