CN109029967B - A strength test device for aerostatics connecting piece - Google Patents
A strength test device for aerostatics connecting piece Download PDFInfo
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- CN109029967B CN109029967B CN201811157262.3A CN201811157262A CN109029967B CN 109029967 B CN109029967 B CN 109029967B CN 201811157262 A CN201811157262 A CN 201811157262A CN 109029967 B CN109029967 B CN 109029967B
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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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- 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
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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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the field of aerostat tests, and particularly relates to a strength test device for an aerostat connecting piece. At present, a special test device special for the strength test of the typical connecting piece of the aerostat does not exist. The invention aims to overcome the defects of large occupied area, low installation efficiency, long test period, poor repeatability and the like in the conventional test method. The fixing module is used for tensioning and fixing the edge of the base cloth on the fixing rack; horizontal loading pulleys are also arranged at different positions of the edge of the fixed rack; the loading module fixes the pulley guide rail above the fixed rack through a loading rack, and a movable vertical loading pulley is arranged on the pulley guide rail; the loading module is also provided with an actuating cylinder, and one end of a cable is connected with the actuating cylinder; the other end is connected with the connecting cloth through a loading pulley. The automation of test installation and loading is realized, and the test efficiency is greatly improved. The test device is loaded from installation, and all programs are adopted for automatic control, so that the test efficiency is greatly improved.
Description
Technical Field
The invention belongs to the field of aerostat tests, and particularly relates to a strength test device for an aerostat connecting piece.
Background
The aerostat is provided with a large number of typical connecting pieces, such as a bowknot form adopted by the connection of the cable and the capsule, a cloth cover form adopted by the connection of the keel and the capsule, and the like. These typical connections must be strength tested at the surface. In the strength test, in order to simulate the real situation and meet the relevant test standards, the base cloth of the test piece is subjected to double-shaft tensioning, and the loading requirements of different angles and different rates are met. The test device capable of quickly tensioning the test piece and meeting the loading requirements of different angles and different rates is needed, a special test device specially used for the strength test of a typical connecting piece of an aerostat does not exist at present, the existing test method adopts a force bearing ground rail to carry out the test, the occupied field is large, a test clamp needs to be installed again before each test, the test piece is tensioned in a manual tensioning mode, the repeatability is poor, the installation efficiency is low, and the test period is long.
Disclosure of Invention
The invention aims to overcome the defects of large occupied area, low installation efficiency, long test period, poor repeatability and the like in the conventional test method. The strength test method of the typical connecting piece of the aerostat is improved.
A strength test device for aerostat connecting piece is used for carrying out separation strength test on connecting piece formed by hot welding of base cloth and connecting cloth, and comprises a fixing module at the bottom and a loading module at the upper part, wherein
The fixing module is used for tensioning and fixing the edge of the base cloth on the fixing rack; horizontal loading pulleys are also arranged at different positions of the edge of the fixed rack;
the loading module fixes the pulley guide rail above the fixed rack through a loading rack, and a movable vertical loading pulley is arranged on the pulley guide rail; the loading module is also provided with an actuating cylinder, and one end of a cable is connected with the actuating cylinder;
when horizontal tension is applied to the connecting cloth, the other end of the cable is connected with the connecting cloth through the horizontal loading pulley; when vertical tension is applied to the connecting cloth, the other end of the cable is connected with the connecting cloth through the vertical loading pulley.
The fixed module is provided with a plurality of dovetail groove guide rails which are distributed transversely and longitudinally, a pair of transverse T-shaped clamping grooves are movably arranged on the longitudinal dovetail groove guide rails, a pair of longitudinal T-shaped clamping grooves are movably arranged on the transverse dovetail groove guide rails, and the T-shaped clamping grooves are connected with four edges of the base cloth; and the fixed rack is also provided with a ball screw and a corresponding servo motor along the transverse direction and the longitudinal direction, and the ball screw is provided with opposite thread turning directions on two sides and is respectively in threaded connection with the corresponding T-shaped clamping groove.
The horizontal loading pulley comprises a first pulley, a second pulley and a third pulley, wherein the second pulley and the third pulley are arranged on two sides of the right-angle edge and can move.
The vertical loading pulley comprises a fourth pulley with the positioning function and a sixth pulley which is arranged above the connecting cloth and fixed on the pulley guide rail.
The fixed and loading platforms both have adjustable legs.
The servo motor is connected with the ball screw through the speed reducer.
Has the advantages that:
1. the test device can automatically tension a test piece according to requirements, is quick to install and easy to operate; when the strength test of the typical connecting piece of the aerostat is carried out by adopting a traditional method, the test piece is tensioned by adopting a manual adjusting mode, the operation is complex, the efficiency is low, a special test bench is not provided, and the test repeatability is poor due to the randomness of each installation. The test device realizes automatic tensioning of a test piece through the ball screws in the transverse and longitudinal directions, the servo motors and the control program, and is rapid to install, easy to operate and good in repeatability.
2. The test device can realize quick quantitative tensioning of the double shafts; according to the test device, the mutually-vertical double-shaft tensioning devices are arranged on the mounting plane, synchronous tensioning according to a set tensioning force in the plane in the double-shaft direction can be realized, and the use working condition of a test piece in the installation state can be better simulated.
3. The test device can meet test pieces with different sizes, and is high in universality; the test device can meet the test requirements of test pieces with different sizes in a certain range.
4. The test device can meet the loading requirements of different angles; the test device can quickly meet the requirement of multi-angle loading through a pulley system.
5. The test device can realize adjustable loading rate; the testing device can realize accurate control of the stretching rate by controlling the electric actuating cylinder for loading through a program, and meets the requirement of a test standard on the loading rate.
6. The test device can be automatically controlled, the automation of test installation and loading is realized, and the test efficiency is greatly improved. The test device is loaded from installation, and all programs are adopted for automatic control, so that the test efficiency is greatly improved.
Drawings
FIG. 1 is an isometric view of a trial of the present invention;
FIG. 2 is an isometric view of a stationary module;
fig. 3 is an isometric view of a loading module.
1-base cloth; 2, fixing the rack; 3, dovetail groove guide rail; 4-T-shaped clamping groove; 5, a ball screw; 6-a servo motor; 7-a first pulley; 8-a second pulley; 9-a third pulley; 10-adjustable support legs; 11-a reducer; 12-a loading gantry; 13-a pulley guide; 14-actuating cylinder; 15-a fourth sheave; 16-a fifth pulley; 17-a sixth sheave; 18-connecting cloth
Detailed Description
During testing, the test piece is fixed and tensioned through the test fixing module, the test piece is loaded through the test loading module, and the whole testing device is of a self-balancing structure and does not need to be additionally constrained.
A strength testing apparatus for aerostat coupling member for performing separation strength test of coupling member composed of base cloth 1 and coupling cloth 18 by thermal welding, the apparatus comprising a bottom fixing module and an upper loading module, wherein
The fixing module is used for tensioning and fixing the edge of the base cloth 1 on the fixing rack 2; horizontal loading pulleys are also arranged at different positions of the edge of the fixed rack 2;
the loading module fixes a pulley guide rail 13 above the fixed rack 2 through a loading rack 12, and a movable vertical loading pulley is arranged on the pulley guide rail 13; the loading module is also provided with an actuating cylinder 14, and one end of a cable is connected with the actuating cylinder 14;
when a horizontal tension is applied to the connecting cloth 18, the other end of the cable is connected with the connecting cloth 18 through a horizontal loading pulley; when a vertical pulling force is applied to the connecting cloth 18, the other end of the cable is connected to the connecting cloth 18 via a vertical loading pulley.
The fixing module is provided with a plurality of dovetail groove guide rails 3 which are distributed transversely and longitudinally, a pair of transverse T-shaped clamping grooves 4 are movably arranged on the longitudinal dovetail groove guide rails 3, a pair of longitudinal T-shaped clamping grooves 4 are movably arranged on the transverse dovetail groove guide rails 3, and the T-shaped clamping grooves 4 are connected with four edges of the base cloth 1; the fixed rack 2 is also provided with a ball screw 5 and a corresponding servo motor 6 along the transverse direction and the longitudinal direction, and the ball screw 5 has opposite thread turning directions on two sides and is respectively in threaded connection with the corresponding T-shaped clamping grooves 4.
The horizontal loading pulleys comprise a first pulley 7, a second pulley 8 and a third pulley 9, wherein the second pulley 8 and the third pulley 9 are arranged on two sides of the right-angle edge and can move.
The vertical loading pulley comprises a fourth pulley 15 for its positioning and a sixth pulley 17 fixed on the pulley rail 13 above the connecting cloth 18.
Both the stationary gantry 2 and the loading gantry 12 have adjustable legs 10.
The servo motor 6 is connected with the ball screw 5 through a speed reducer 11.
The device is successfully applied to strength tests of typical connecting pieces of aerostatics of various models, greatly improves the test efficiency, and verifies the bearing capacity of various typical connecting pieces.
Claims (5)
1. A strength test device for aerostat connector, for performing separation strength test on connector constituted by base cloth (1) and connecting cloth (18) by thermal welding, characterized in that: the device comprises a bottom fixed module and an upper loading module, wherein
The fixing module is used for tensioning and fixing the edge of the base cloth (1) on the fixing rack (2); horizontal loading pulleys are further arranged at different positions of the edge of the fixed rack (2);
the loading module fixes a pulley guide rail (13) above the fixed rack (2) through a loading rack (12), and a movable vertical loading pulley is arranged on the pulley guide rail (13); the loading module is also provided with an actuating cylinder (14), and one end of the cable is connected with the actuating cylinder (14);
when horizontal tension is applied to the connecting cloth (18), the other end of the cable is connected with the connecting cloth (18) through a horizontal loading pulley; when a vertical pulling force is applied to the connecting cloth (18), the other end of the cable is connected with the connecting cloth (18) through a vertical loading pulley; the fixing module is provided with a plurality of dovetail groove guide rails (3) which are distributed transversely and longitudinally, a pair of transverse T-shaped clamping grooves (4) are movably arranged on the longitudinal dovetail groove guide rails (3), a pair of longitudinal T-shaped clamping grooves (4) are movably arranged on the transverse dovetail groove guide rails (3), and the T-shaped clamping grooves (4) are connected with four edges of the base cloth (1); the fixed rack (2) is also provided with a ball screw (5) and a corresponding servo motor (6) along the transverse direction and the longitudinal direction, and the ball screw (5) has opposite thread turning directions on two sides and is respectively in threaded connection with the corresponding T-shaped clamping grooves (4).
2. The strength testing apparatus according to claim 1, characterized in that: the horizontal loading pulley comprises a first pulley (7), a second pulley (8) and a third pulley (9), wherein the second pulley (8) and the third pulley (9) are arranged on two sides of the right-angle edge and can move.
3. The strength testing apparatus according to claim 2, characterized in that: the vertical loading pulley comprises a fourth pulley (15) with positioning function and a sixth pulley (17) which is arranged above the connecting cloth (18) and fixed on the pulley guide rail (13).
4. The strength testing apparatus according to claim 3, characterized in that: the stationary gantry (2) and the loading gantry (12) both have adjustable legs (10).
5. The strength testing apparatus according to claim 4, wherein: the servo motor (6) is connected with the ball screw (5) through a speed reducer (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811157262.3A CN109029967B (en) | 2018-09-30 | 2018-09-30 | A strength test device for aerostatics connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811157262.3A CN109029967B (en) | 2018-09-30 | 2018-09-30 | A strength test device for aerostatics connecting piece |
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| Publication Number | Publication Date |
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| CN109029967A CN109029967A (en) | 2018-12-18 |
| CN109029967B true CN109029967B (en) | 2020-06-09 |
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| CN201811157262.3A Active CN109029967B (en) | 2018-09-30 | 2018-09-30 | A strength test device for aerostatics connecting piece |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361187A (en) * | 2019-08-21 | 2019-10-22 | 合肥工业大学 | A kind of flexible structure test pneumatic load test device |
| CN113494996B (en) * | 2020-04-07 | 2024-07-09 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Intensity testing system for suspension sensing device |
| CN113494995B (en) * | 2020-04-07 | 2024-07-09 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Intensity testing system for suspension sensing device |
| CN112067332A (en) * | 2020-08-28 | 2020-12-11 | 合肥工业大学 | Experimental concentrated force loading test device of airship flexible structure |
| CN112326436A (en) * | 2020-10-29 | 2021-02-05 | 合肥工业大学 | Device and method for testing mechanical properties of inner curtain cloth assembly of airship |
| CN113232889A (en) * | 2021-06-11 | 2021-08-10 | 湖南航天远望科技有限公司 | Aerostat capsule soft accessory test system and test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102011017564B4 (en) * | 2011-04-26 | 2017-02-16 | Airbus Defence and Space GmbH | Method and system for inspecting a surface for material defects |
| CN102829988B (en) * | 2012-08-13 | 2015-04-15 | 清华大学 | Testing device for vertical and continuous loading at optional position of numerical control moving table |
| CN103913285B (en) * | 2012-12-31 | 2017-06-09 | 北京建筑工程学院 | A kind of mechanical test device |
| CN105806718B (en) * | 2016-03-08 | 2017-05-10 | 中国地质大学（武汉） | Structural surface direct shear test device for accurately controlling normal stress application process |
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