CN114235371B - Tail spring storage life evaluation test device - Google Patents
Tail spring storage life evaluation test device Download PDFInfo
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- CN114235371B CN114235371B CN202111557139.2A CN202111557139A CN114235371B CN 114235371 B CN114235371 B CN 114235371B CN 202111557139 A CN202111557139 A CN 202111557139A CN 114235371 B CN114235371 B CN 114235371B
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- 238000012360 testing method Methods 0.000 title claims abstract description 99
- 238000011156 evaluation Methods 0.000 title claims description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 210000000078 claw Anatomy 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
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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
- G01N3/26—Investigating twisting or coiling properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention provides a tail wing spring storage life assessment test device, which comprises a rotary loading plate formed by hinging a first plate body and a second plate body, wherein a spring rod of the rotary loading plate is used for sleeving a spring test piece, torsion loading is carried out on the spring test piece after the first plate body and the second plate body are folded, axial pressure loading is carried out on the spring test piece by adopting a screw rod transmission mechanism, and a screw rod of the screw rod transmission mechanism is used as the spring rod of the rotary loading plate; the screw rod transmission mechanism comprises a nut seat and two sleeve members arranged on two sides of the nut seat, the two sleeve members are fixedly connected to the rotary loading plate, one end of the spring test piece abuts against the nut seat, and the other end of the spring test piece abuts against one of the sleeve members. The invention has the advantages of good universality, stability and safety, easy operation, simple structure, small volume and low manufacturing cost, and is especially suitable for large tail springs.
Description
Technical Field
The invention belongs to the technical field of tail spring tests, and particularly relates to a tail spring storage life assessment test device.
Background
The tail spring is a spring installed on the tail of the missile, in practical cases, the tail spring of a certain missile is in a storage state for a long time, and torsion and axial power shortage of the spring may exist during launching, so that the function of a power system is invalid, and the striking precision and reliability of the corresponding system are affected. Based on the above, a set of test device for measuring torsion force and axial force is developed in the early stage (the device comprises a rotary loading plate and a central rod, and the use process comprises the steps of opening the rotary loading plate, pulling out the central rod, sleeving a spring sample, inserting a fixed central rod, inserting a fixing pin after applying proper pretightening force according to test requirements, folding the rotary loading plate, loading a torsion dynamometer and locking), and performing an acceleration test after the tail spring is mounted on the test device, so that the storage life of the tail spring is estimated. However, the test device can only perform a test on a small tail spring (the working load of the spring is not more than 500N) with the same specification, has poor universality, and cannot flexibly and accurately regulate and control the applied load.
Disclosure of Invention
The invention aims to provide a tail spring storage life assessment test device which at least can solve the technical problems that an existing test device can only conduct tests on small tail springs with the same specification, has poor universality and cannot flexibly and accurately regulate and control applied loads.
In order to achieve the above object, the present invention adopts the following technical scheme.
The utility model provides a fin spring stores life-span evaluation test device, includes the rotatory loading board that forms by first plate body and second plate body are articulated, and the spring lever of rotatory loading board is used for the cover to establish the spring test piece, folds the back through first plate body and second plate body and carries out torsion loading to the spring test piece, its characterized in that: the method comprises the steps that a screw rod transmission mechanism is adopted to carry out axial pressure loading on a spring test piece, and a screw rod of the screw rod transmission mechanism is adopted as a spring rod of a rotary loading plate; the screw rod transmission mechanism comprises a nut seat and two sleeve members arranged on two sides of the nut seat, the two sleeve members are fixedly connected to the rotary loading plate, one end of the spring test piece abuts against the nut seat, and the other end of the spring test piece abuts against one of the sleeve members.
For improving test device's stability, set up two sleeve pipes cover at the second plate body side and establish on the lead screw, two sleeve pipes are located two external member outsides, realize the contained angle regulation between first plate body and the second plate body through upset second plate body.
For further improving test device's stability, convenient operation simultaneously is provided with the bar hole on first plate body, and two external members are located bar hole both ends and fix on first plate body, and the nut seat is located the bar hole and can remove along the bar hole.
In order to accurately control torsion, a limiting piece is arranged on the first plate body, and when the second plate body is turned inwards to a limiting position, the inner wall of the second plate body is abutted against the top surface of the limiting piece.
In order to further improve accuracy of test results, a locking assembly used for locking the first plate body and the second plate body is arranged on the edge of the rotary loading plate.
In order to further improve the stability of the test device, the length of the first plate body is greater than that of the second plate body, and when the second plate body is turned outwards to the limit position, the outer wall of the second plate body is attached to the first plate body.
In order to conveniently regulate and control the applied torsion load, a wedge block with a strip-shaped groove is arranged on the inner wall of the first plate body, a first claw part of the spring test piece is clamped in the wedge block strip-shaped groove, and a second claw part of the spring test piece is abutted against the inner wall of the second plate body.
For being convenient for more accurate regulation and control torsion load of appling, as one of them preferred scheme, the voussoir articulates the position that is close to the external member on first plate body, and this articulated position is close to the spring test piece, is provided with the multi-disc clearance gauge piece that just separates to arrange in the voussoir side that keeps away from the spring test piece, and clearance gauge piece articulates to be connected on first plate body, and arbitrary clearance gauge piece can rotate to between voussoir and the first plate body inner wall.
In order to more accurately regulate and control the applied torsion load, as another preferable scheme, the wedge is hinged on the first plate body at a position close to the sleeve, the hinged part is close to the spring test piece, the first plate body is provided with a jackscrew in a penetrating mode, the front end of the jackscrew abuts against the bottom surface of the wedge far away from the spring test piece, and the deflection of the wedge is controlled by rotating the jackscrew.
The tail spring storage life evaluation test device provided by the invention has the following beneficial effects:
1. the device has good universality, can apply axial load and torsion load to tail springs with various specifications (different lengths, different diameters, different wire diameters and different loads) at the same time by adopting one set of device, can flexibly, accurately and quickly adjust the compression degree and compression rate of the tail springs, and has high availability and repeated utilization rate;
2. the axial load and the torsion load applied can be flexibly, accurately and quickly adjusted, the torsion angle of the tail wing spring can be accurately adjusted and controlled, and the adjustment and control precision of the torsion angle can reach 0.2-2 degrees/time (the torsion angle is changed by 0.2-2 degrees once per adjustment);
3. the stability and the safety are good, the operation is easy, and the device is particularly suitable for carrying out experiments aiming at large tail springs (the working load of the springs is not less than 500N);
4. simple structure, small volume and low manufacturing cost (less than two thousand yuan/set), and can be placed in a test box to develop an acceleration test.
Drawings
FIG. 1 is a schematic view of the tail spring shelf life evaluation test apparatus of example 1 (opened to the extreme position);
FIG. 2 is a schematic diagram of the tail spring shelf life evaluation test apparatus (during flipping) in example 1;
FIG. 3 is a schematic view of the tail spring shelf life evaluation test apparatus of example 1 (closed);
FIG. 4 is an enlarged view of the portion A of FIG. 2;
FIG. 5 is a schematic diagram of the tail spring shelf life evaluation test apparatus of example 2 (half open state);
FIG. 6 is a schematic diagram of a tail spring shelf life evaluation test apparatus in example 2 II (half open state);
FIG. 7 is a schematic view of the tail spring shelf life evaluation test apparatus of example 2 (opened to the extreme position);
FIG. 8 is a schematic view of example 2 without a plug blade under the wedge;
FIG. 9 is a schematic view of the wedge of example 2 after insertion of the feeler blade;
FIG. 10 is a schematic diagram of the tail spring shelf life evaluation test apparatus in example 4.
Detailed Description
The present invention is further described below with reference to the accompanying drawings and specific examples, which are provided to aid in understanding the principles of the present invention and its core ideas, but are not intended to limit the scope of the present invention. It should be noted that modifications to the present invention without departing from the principles of the invention would be obvious to one of ordinary skill in this art and would fall within the scope of the invention as defined in the appended claims.
Example 1
As shown in fig. 1 to 4, the empennage spring storage life evaluation test device comprises a rotary loading plate formed by hinging a first plate body 2 and a second plate body 11, wherein a spring rod of the rotary loading plate is used for sleeving a spring test piece 8, torsion loading is carried out on the spring test piece 8 after the first plate body 2 and the second plate body 11 are folded, axial pressure loading is carried out on the spring test piece 8 by adopting a screw rod transmission mechanism, and a screw rod 5 of the screw rod transmission mechanism is used as the spring rod of the rotary loading plate; the screw rod transmission mechanism comprises a nut seat 6 and two sleeve pieces 4 arranged on two sides of the nut seat 6, the two sleeve pieces 4 are fixedly connected to the rotary loading plate, one end of a spring test piece 8 is abutted against the nut seat 6, and the other end is abutted against one sleeve piece 4; the end part of the screw rod 5 is provided with a rotating piece 12, and the screw rod 5 can be driven to rotate when the rotating piece 12 is controlled to rotate, and the nut seat 6 is driven to axially move when the screw rod 5 rotates.
In this embodiment: two sleeve pipes 3 arranged at the side edges of the second plate body 11 are sleeved on the screw rod 5, the two sleeve pipes 3 are positioned at the outer sides of the two sleeve pipes 4, and the included angle between the first plate body 2 and the second plate body 11 is adjusted by overturning the second plate body 11.
In this embodiment: two limiting pieces 10 with the same specification are arranged on the first plate body 2, and when the second plate body 11 is turned inwards to the limit position, the inner wall of the second plate body 11 is abutted against the top surfaces of the two limiting pieces 10.
In this embodiment: the edge of the rotary loading plate is provided with a lock catch assembly 9 used for locking the first plate body 2 and the second plate body 11, specifically, the outer edges of the first plate body 2 and the second plate body 11 are provided with a protruding part 1, the protruding part 1 is provided with a notch for installing the lock catch assembly 9, and when the inner wall of the second plate body 11 is attached to the top surfaces of the two limiting pieces 10, the rotary loading plate is locked by adopting the lock catch assembly 9.
In this embodiment: wedge blocks 13 with strip grooves 16 are connected to the inner wall of the first plate body 2 through bolts, first claw portions 14 of the spring test pieces 8 are clamped in the strip grooves 16 of the wedge blocks 13, and second claw portions 7 of the spring test pieces 8 are abutted against the inner wall of the second plate body 11.
When in use, the utility model is characterized in that: firstly, a wedge 13 with proper specification is selected and installed on the inner wall of a first plate body 2, then a spring test piece 8 is clamped between a nut seat 6 and one of sleeve pieces 4, then a lead screw 5 is screwed in and penetrates through the spring test piece 8, the spring test piece 8 is sleeved on the lead screw 5, then the lead screw 5 is regulated to enable one end of the spring test piece 8 to abut against the end part of one of the sleeve pieces 4, the other end of the spring test piece 8 abuts against the nut seat 6, a claw part II 7 close to the nut seat 6 abuts against the inner wall of a second plate body 11, and meanwhile, a claw part I14 of the spring test piece 8 is clamped in a strip groove 16 of the wedge 13; then the position of the nut seat 6 is accurately adjusted by rotating the rotating member 12, then the first plate body 2 and the second plate body 11 are buckled and locked, finally the whole test device with the spring test piece 8 is placed in the environment test atmosphere for test, and after the test is finished, the spring test piece 8 is taken out and the storage life is evaluated.
Example 2
As shown in fig. 5 to 9, the empennage spring storage life evaluation test device comprises a rotary loading plate formed by hinging a first plate body 2 and a second plate body 11, wherein a spring rod of the rotary loading plate is used for sleeving a spring test piece 8, torsion loading is carried out on the spring test piece 8 after the first plate body 2 and the second plate body 11 are folded, axial pressure loading is carried out on the spring test piece 8 by adopting a screw rod transmission mechanism, and a screw rod 5 of the screw rod transmission mechanism is used as the spring rod of the rotary loading plate; the screw rod transmission mechanism comprises a nut seat 6 and two sleeve pieces 4 arranged on two sides of the nut seat 6, the two sleeve pieces 4 are fixedly connected to the rotary loading plate, one end of a spring test piece 8 is abutted against the nut seat 6, and the other end is abutted against one sleeve piece 4; the end part of the screw rod 5 is provided with a rotating piece 12, and the screw rod 5 can be driven to rotate when the rotating piece 12 is controlled to rotate, and the nut seat 6 is driven to axially move when the screw rod 5 rotates.
In this embodiment: two sleeve pipes 3 arranged at the side edges of the second plate body 11 are sleeved on the screw rod 5, the two sleeve pipes 3 are positioned at the outer sides of the two sleeve pipes 4, and the included angle between the first plate body 2 and the second plate body 11 is adjusted by overturning the second plate body 11.
In this embodiment: two limiting pieces 10 with the same specification are arranged on the first plate body 2, and when the second plate body 11 is turned inwards to the limit position, the inner wall of the second plate body 11 is abutted against the top surfaces of the two limiting pieces 10.
In this embodiment: the edge of the rotary loading plate is provided with a lock catch assembly 9 used for locking the first plate body 2 and the second plate body 11, specifically, the outer edges of the first plate body 2 and the second plate body 11 are provided with a protruding part 1, the protruding part 1 is provided with a notch for installing the lock catch assembly 9, and when the inner wall of the second plate body 11 is attached to the top surfaces of the two limiting pieces 10, the rotary loading plate is locked by adopting the lock catch assembly 9.
In this embodiment: wedge blocks 13 with strip grooves 16 are arranged on the inner wall of the first plate body 2, first claw portions 14 of the spring test pieces 8 are clamped in the strip grooves 16 of the wedge blocks 13, and second claw portions 7 of the spring test pieces 8 are abutted against the inner wall of the second plate body 11. The wedge 13 is hinged on the first plate body 2 at a position close to the sleeve 4 (the wedge 13 is sleeved on the shaft 18, two ends of the shaft 18 are connected to the support 19, the wedge 13 can rotate around the shaft 18), the hinged position is close to the spring test piece 8, a plurality of clearance gauge pieces 17 are arranged at the side of the wedge 13 far away from the spring test piece 8, the clearance gauge pieces 17 are 0.02mm, 0.05mm, 0.08mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm and 1mm thick, the clearance gauge pieces 17 are hinged on the first plate body 2, the free ends of the clearance gauge pieces 17 always extend out of the rotary loading plate, and any clearance gauge piece 17 can rotate between the wedge 13 and the inner wall of the first plate body 2.
When in use, the utility model is characterized in that: the installation method is the same as that of the embodiment, in this embodiment, torsion load can be accurately adjusted by means of the feeler gauge 17 and the wedge 13, when the first claw 14 of the spring test piece 8 is clamped in the strip-shaped groove 16 of the wedge 13 in the initial state, the wedge 13 is pressed against the inner wall of the first plate body 2, if the torsion load needs to be accurately adjusted, only the proper feeler gauge 17 needs to be rotated, so that the feeler gauge 17 is plugged/clamped between the wedge 13 and the inner wall of the first plate body 2 (as shown in fig. 9), and therefore micro deflection occurs to the wedge 13, adjustment of the torsion load is achieved, and finally, the rotary loading plate is locked by adopting the locking assembly 9. By adopting the scheme in the embodiment, the test is carried out aiming at a plurality of different test pieces, and only two minutes are consumed for replacing the spring test piece each time, so that 1-2 minutes can be saved compared with the device in the background technology.
Example 3
An empennage spring storage life evaluation test apparatus, referring to example 2, differs from example 2 in that the following structure is used instead of the gauge blade: the jackscrew is worn on the first plate body 2, the front end of the jackscrew is propped against the bottom surface of the wedge block 13 far away from the spring test piece 8, the tail part of the jackscrew is positioned on the back surface of the first plate body 2, and the deflection of the wedge block 13 is controlled by rotating the jackscrew, so that the torsion load is adjusted.
Example 4
An empennage spring storage life evaluation test apparatus, referring to embodiment 1, embodiment 2 or embodiment 3, differs from the foregoing embodiments in that: referring to fig. 10, a bar hole 15 is provided on the first plate body 2, two sleeve members 4 are positioned at both ends of the bar hole 15 and fixed on the first plate body 2, and a nut seat 6 is positioned in the bar hole 15 and can move along the bar hole 15; the length of the first plate body 2 is 1.5-2 times that of the second plate body 11, and when the second plate body 11 is turned outwards to the limit position, the outer wall of the second plate body 11 is abutted against the first plate body 2. The test device with the structure is more convenient to use, the stability of the test device is improved, the supporting structure of the test device can be stably placed on the table top through the first plate body 2 in the use process, and meanwhile, the second plate body 11 can be better protected.
In the remaining application, the rotary part 12 can be connected to the motor or the electric wrench in a mating manner during the test for the large spring test piece 8, so that an axial loading/adjustment can be carried out more quickly.
Claims (4)
1. The utility model provides a fin spring stores life-span evaluation test device, includes the rotatory loading board that forms by first plate body (2) and second plate body (11) are articulated, and spring lever of rotatory loading board is used for the cover to establish spring test piece (8), folds back through first plate body (2) and second plate body (11) and carries out torsion loading to spring test piece (8), its characterized in that: the screw rod transmission mechanism is adopted to carry out axial pressure loading on the spring test piece (8), and the screw rod (5) of the screw rod transmission mechanism is adopted as a spring rod of the rotary loading plate; the screw rod transmission mechanism comprises a nut seat (6) and two sleeve pieces (4) arranged on two sides of the nut seat (6), the two sleeve pieces (4) are fixedly connected to the rotary loading plate, one end of a spring test piece (8) is abutted against the nut seat (6), and the other end of the spring test piece is abutted against one of the sleeve pieces (4); two sleeves (3) arranged at the side edges of the second plate body (11) are sleeved on the screw rod (5), the two sleeves (3) are positioned at the outer sides of the two sleeve members (4), and the included angle between the first plate body (2) and the second plate body (11) is adjusted by overturning the second plate body (11); a limiting piece (10) is arranged on the first plate body (2), and when the second plate body (11) is turned inwards to a limit position, the inner wall of the second plate body (11) is abutted against the top surface of the limiting piece (10); the edge of the rotary loading plate is provided with a lock catch assembly (9) for locking the first plate body (2) and the second plate body (11); wedge blocks (13) with strip grooves (16) are arranged on the inner wall of the first plate body (2), first claw parts (14) of the spring test pieces (8) are clamped in the strip grooves (16) of the wedge blocks (13), and second claw parts (7) of the spring test pieces (8) are abutted against the inner wall of the second plate body (11).
2. The tail spring shelf life assessment test device of claim 1, wherein: be provided with bar hole (15) on first plate body (2), two external member (4) are located bar hole (15) both ends and fix on first plate body (2), and nut seat (6) are located bar hole (15) and can follow bar hole (15) and remove.
3. The tail spring shelf life assessment test device of claim 2, wherein: the length of the first plate body (2) is greater than that of the second plate body (11), and when the second plate body (11) is turned outwards to the limit position, the outer wall of the second plate body (11) is attached to the first plate body (2).
4. A tail spring shelf life assessment test apparatus according to claim 3, wherein: the wedge block (13) is hinged on the first plate body (2) at a position close to the sleeve member (4), and the hinged position is close to the spring test piece (8); a plurality of clearance gauge sheets (17) which are arranged at intervals are arranged on the side of the wedge block (13) far away from the spring test piece (8), the clearance gauge sheets (17) are hinged on the first plate body (2), and any clearance gauge sheet (17) can rotate to a position between the wedge block (13) and the inner wall of the first plate body (2); or, a jackscrew is arranged on the first plate body (2) in a penetrating way, the front end of the jackscrew is abutted against the bottom surface of the wedge block (13) far away from the spring test piece (8), and the deflection of the wedge block (13) is controlled by rotating the jackscrew.
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| CN202111557139.2A CN114235371B (en) | 2021-12-18 | 2021-12-18 | Tail spring storage life evaluation test device |
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| CN202111557139.2A CN114235371B (en) | 2021-12-18 | 2021-12-18 | Tail spring storage life evaluation test device |
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| CN114235371B true CN114235371B (en) | 2023-07-07 |
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