CN110793859A - Modularization steel wire swivel nut strength test device - Google Patents
Modularization steel wire swivel nut strength test device Download PDFInfo
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- CN110793859A CN110793859A CN201911215855.5A CN201911215855A CN110793859A CN 110793859 A CN110793859 A CN 110793859A CN 201911215855 A CN201911215855 A CN 201911215855A CN 110793859 A CN110793859 A CN 110793859A
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- stretching
- steel wire
- thread insert
- wire thread
- hole
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- Life Sciences & Earth Sciences (AREA)
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- 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 provides a modularized steel wire thread insert strength test device which comprises an actuating cylinder, a stretching frame, a pull rod system and a stretching cushion block, wherein the actuating cylinder is arranged on the stretching frame; the stretching frame comprises a bottom plate, a top plate and a supporting rod between the bottom plate and the top plate; the top plate is provided with a connecting hole for fixedly mounting the main body structure of the actuator cylinder, and the stretching rod of the actuator cylinder can penetrate through the top plate; a through hole is formed in the bottom plate, and the aperture of the through hole is not smaller than the diameter of the steel wire thread insert to be detected; the pull rod system is coaxially and fixedly arranged at the end part of the actuating cylinder stretching rod; the pull rod system sequentially comprises a transfer rod, a force measuring sensor and a connecting single lug; the upper end of the stretching cushion block is provided with a deep groove which is used for being connected with the connecting single lug through a pin shaft, and the lower end of the stretching cushion block is provided with a bolt which is matched with the tested steel wire thread insert; the bolt can pass through the through hole of the base plate of the stretching frame and is in threaded connection with the measured steel wire thread insert. The invention is designed according to the self-bearing concept, has the characteristics of simple structure, wide application, convenient use and low cost, can obviously improve the reliability and the installation efficiency of the connection of the bearing frame, and has stronger application value.
Description
Technical Field
The invention relates to a modular steel wire thread insert strength test device, belongs to the field of static tests, and is mainly applied to the test of the pull-out strength of a thread insert with a steel wire thread insert screw hole.
Background
The solid rocket engine steel wire thread insert strength test is an important component of a solid rocket engine structure static test and bears an important means for evaluating an engine connection structure. The conventional solid rocket engine steel wire thread insert strength test mainly comprises the steps of fixing an engine test piece on a test platform, then erecting a portal frame by taking a reference steel wire thread insert as a center, installing an actuating cylinder and a sensor on the portal frame, leading out by using a pull rod system, and then connecting the steel wire thread insert with the actuating cylinder and the sensor to perform the steel wire thread insert strength test. The test method is mature and reliable, but has large installation workload, high test efficiency and cost, and is not suitable for large-batch steel wire thread insert tests.
At present, the solid rocket engine is researched and developed in a blowout period, more and more engine steel wire thread insert strength test tasks are carried out, higher requirements are provided for a test method, a new test device is researched in order to adapt to the development of the solid rocket engine steel wire thread insert strength test, the load transfer mode is improved, and the test device has important significance in improving the test efficiency and reducing the test cost in the practical application process.
Disclosure of Invention
Based on the defects of the prior art, the invention provides a modularized steel wire thread insert strength test device, which mainly solves the problems of overturning danger and lower test efficiency of a hair fixing structure in a traditional solid engine steel wire thread insert tensile test.
The technical scheme of the invention is as follows:
the modularized steel wire thread insert strength test device is characterized in that: the device comprises an actuating cylinder, a stretching frame, a pull rod system and a stretching cushion block;
the stretching frame comprises a bottom plate, a top plate and a supporting rod positioned between the top plate and the bottom plate; the top plate is provided with a connecting hole for fixedly mounting a main body structure of the actuator cylinder, and a stretching rod of the actuator cylinder can penetrate through the top plate; the bottom plate is also provided with a through hole, and the aperture of the through hole is not smaller than the diameter of the steel wire thread insert to be tested;
the pull rod system is coaxially and fixedly arranged at the end part of a stretching rod of the actuating cylinder; the pull rod system sequentially comprises an adapter rod, a force measuring sensor and a connecting single lug;
the upper end of the stretching cushion block is provided with a deep groove which is used for being connected with the connecting single lug through a pin shaft, and the lower end of the stretching cushion block is provided with a bolt matched with the tested steel wire thread insert; the bolt can pass through the through hole of the base plate of the stretching frame and is in threaded connection with the tested steel wire thread insert.
Further preferred scheme, a modularization wire thread insert strength test device, its characterized in that: bottom plate and roof and the bracing piece of tensile frame all adopt screw-thread fit, convenient to detach changes.
Further preferred scheme, a modularization wire thread insert strength test device, its characterized in that: the bottom surface profile of the bottom plate of the stretching frame is matched with the surface profile of the structural member where the tested steel wire thread insert is located.
Advantageous effects
The modular steel wire thread insert strength test device provided by the invention is designed according to a self-bearing concept, has the characteristics of simple structure, wide application, convenience in use and low cost, can obviously improve the connection reliability and installation efficiency of the bearing frame, and has high application value.
1. The test device, the tested structure and the stress application equipment form a self-balancing system, the dependence on the appearance of the tested structure is small, and no additional load is generated on the tested structure;
2. the stretching cushion block and the stretching frame are in a modular design, and the steel wire thread inserts with various sizes can be tested;
3. the test device is connected with the force application equipment and the components thereof to form a whole, and the installation is convenient, quick and efficient.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of the installation effect of a modular wire thread insert strength test device;
in the figure: 1-actuating cylinder, 2-stretching frame, 3-pull rod system, 4-pin shaft, 5-stretching cushion block and 6-bolt.
Detailed Description
The following detailed description of embodiments of the invention is intended to be illustrative, and not to be construed as limiting the invention.
The embodiment provides a strength static test device mainly used for a solid engine wire thread insert tensile test, which comprises an actuating cylinder, a tensile frame, a pull rod system and a tensile cushion block, and is shown in fig. 1.
The stretching frame comprises a bottom plate, a top plate and a supporting rod positioned between the top plate and the bottom plate; bottom plate and roof and the bracing piece of tensile frame all adopt screw-thread fit, convenient to detach changes. The top plate is provided with a connecting hole for fixedly mounting a main body structure of the actuator cylinder, and a stretching rod of the actuator cylinder can penetrate through the top plate; the bottom plate is also provided with a through hole, and the aperture of the through hole is not less than the diameter of the steel wire thread insert to be tested. The bottom surface profile of the bottom plate of the stretching frame is matched with the surface profile of the structural member where the tested steel wire thread insert is located.
The pull rod system is coaxially and fixedly arranged at the end part of a stretching rod of the actuating cylinder; the pull rod system sequentially comprises an adapter rod, a force measuring sensor and a connecting single lug.
The upper end of the stretching cushion block is provided with a deep groove which is used for being connected with the connecting single lug through a pin shaft, and the lower end of the stretching cushion block is provided with a bolt matched with the tested steel wire thread insert; the bolt can pass through the through hole of the base plate of the stretching frame and is in threaded connection with the tested steel wire thread insert.
The actuating cylinder, the stretching frame, the pull rod system and the stretching cushion block are connected together to form a self-bearing integral structure. The actuator cylinder applies pulling force to the steel wire thread insert through the pull rod system and the stretching cushion block, and the stretching frame is propped against the surface of a product where the tested steel wire thread insert is located, so that the system is in a self-bearing structure, namely, the system is the interaction force between the inner parts, and the system is an internal force, and the structure to be tested does not bring any other load except the surface where the tested steel wire thread insert is located. The device, the structure of the tested steel wire thread insert and the stress application equipment form a self-balancing system.
When the device is installed, the stretching frame is placed on the ground in an upright mode, the actuating cylinder is hung in the position of the circular sleeve at the top, and the actuating cylinder is fastened through bolts. The tension rod end of the actuating cylinder is provided with a switching and force measuring sensor component, a single lug and the like. And selecting and installing the stretching cushion block with the corresponding size according to the size of the screw hole of the steel wire thread insert. And lifting the whole body to fall on the surface of the structure where the steel wire thread insert is located, so that the center of the circular hole at the bottom of the stretching frame is aligned with the screw hole of the steel wire thread insert. And adjusting the extension of the rod diameter of the actuating cylinder to align the single lug of the pull rod system with the hole position on the side surface of the deep groove in the stretching cushion block and insert the pin shaft, so that the integral installation of the stretching device is completed.
During testing, the rod diameter extending direction of the actuating cylinder is controlled by the loading system. When the rod diameter retracts, the actuating cylinder applies tensile load to the steel wire thread insert to be tested.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (3)
1. The utility model provides a modularization steel wire swivel nut intensity test device which characterized in that: the device comprises an actuating cylinder, a stretching frame, a pull rod system and a stretching cushion block;
the stretching frame comprises a bottom plate, a top plate and a supporting rod positioned between the top plate and the bottom plate; the top plate is provided with a connecting hole for fixedly mounting a main body structure of the actuator cylinder, and a stretching rod of the actuator cylinder can penetrate through the top plate; the bottom plate is also provided with a through hole, and the aperture of the through hole is not smaller than the diameter of the steel wire thread insert to be tested;
the pull rod system is coaxially and fixedly arranged at the end part of a stretching rod of the actuating cylinder; the pull rod system sequentially comprises an adapter rod, a force measuring sensor and a connecting single lug;
the upper end of the stretching cushion block is provided with a deep groove which is used for being connected with the connecting single lug through a pin shaft, and the lower end of the stretching cushion block is provided with a bolt matched with the tested steel wire thread insert; the bolt can pass through the through hole of the base plate of the stretching frame and is in threaded connection with the tested steel wire thread insert.
2. The modular wire thread insert strength testing device according to claim 1, wherein: bottom plate and roof and the bracing piece of tensile frame all adopt screw-thread fit, convenient to detach changes.
3. The modular wire thread insert strength testing device according to claim 1, wherein: the bottom surface profile of the bottom plate of the stretching frame is matched with the surface profile of the structural member where the tested steel wire thread insert is located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911215855.5A CN110793859A (en) | 2019-12-02 | 2019-12-02 | Modularization steel wire swivel nut strength test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911215855.5A CN110793859A (en) | 2019-12-02 | 2019-12-02 | Modularization steel wire swivel nut strength test device |
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| Publication Number | Publication Date |
|---|---|
| CN110793859A true CN110793859A (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911215855.5A Pending CN110793859A (en) | 2019-12-02 | 2019-12-02 | Modularization steel wire swivel nut strength test device |
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| CN (1) | CN110793859A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393887A (en) * | 2020-10-28 | 2021-02-23 | 山西航天清华装备有限责任公司 | Light and small spring tensile test device |
-
2019
- 2019-12-02 CN CN201911215855.5A patent/CN110793859A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393887A (en) * | 2020-10-28 | 2021-02-23 | 山西航天清华装备有限责任公司 | Light and small spring tensile test device |
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