CN105067217A - A mechanical device for part impact fatigue tests - Google Patents
A mechanical device for part impact fatigue tests Download PDFInfo
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- CN105067217A CN105067217A CN201510554076.3A CN201510554076A CN105067217A CN 105067217 A CN105067217 A CN 105067217A CN 201510554076 A CN201510554076 A CN 201510554076A CN 105067217 A CN105067217 A CN 105067217A
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Abstract
The invention provides a mechanical device for part impact fatigue tests. The mechanical device comprises a T-shaped support. A cylinder support base is fixed on a horizontal bottom plate of the T-shaped support. An execution cylinder is connected to the cylinder support base. A cylinder end of the execution cylinder is connected with a tripping mechanism assembly through a single rod knuckle bearing. The upper portion of the tripping mechanism assembly is connected with a cylinder drum support fixed on a vertical strut of the T-shaped support. A guide support is fixed on the top end of the vertical strut of the T-shaped support. The guide support is provided with a guide wheel. The mechanical device is small in size, occupies less space, enables the load to be adjusted, and can simulate the actual stress condition of relevant parts. The detection process is controllable and the fault observation and detection are convenient. The mechanical device is of a fully mechanical device, is high in reliability, and is low in manufacture and test costs.
Description
Technical field
The present invention relates to repeated impact test device, be specifically related to a kind of mechanical hook-up of parts repeated impact test.
Background technology
Fork truck parts are in its life cycle, and often bear the circulation impact effect of certain load, the time has been grown, and parts can produce fatigue damage, thus cause inefficacy not use.Such as, the steel cylinder bracket that liquefied gas fork truck uses, can be subject to the impact of full gas cylinder in scavenging period; Complete machine is jolting in block and stacking operation process excessively, and the region of interest of door frame and vehicle frame can be subject to the impact etc. from ground and stacking goods; The parts such as fork truck steel cylinder bracket, door frame and vehicle frame, in use, due to the ringing of shock load, weld seam such as to tear at the inefficacy often to cause it to occur, has a strong impact on use and the security of car load.So utilize research technique and fast and effeciently detect that this kind impacts the impact on parts thin spot before dispatching from the factory, thus judge whether its life-span meets design needs, effectively will promote improvement and the upgrading of product, and accelerate the speed that it is introduced to the market.
Simulate the repeated impact test of parts at present, realize often through large suction electromagnet, it is large that it takes up an area space, and testing expenses are high; And the test unit of fully mechanical, owing to lacking quick-release mechanism, freely impacting of test load cannot be realized; Utilize cylinder to coordinate and abandon the correlation test that valve carries out fast, because cylinder self exists vapour lock, effect is undesirable, is difficult to the thin spot accurately finding parts, have impact on the progress of product improvement upgrading.
Summary of the invention
Object of the present invention is exactly to solve above-mentioned Problems existing, provides a kind of mechanical hook-up of parts repeated impact test.Achieve load freely impacting parts, the impact fatigue behavior of checking parts, searches parts thin spot.
Technical scheme of the present invention is:
A kind of mechanical hook-up of parts repeated impact test, comprise T-shaped support, the horizonal base plate of described T-shaped support is installed with cylinder saddle, described cylinder saddle is connected with execution cylinder, the cylinder end of described execution cylinder is connected with tripping mechanism assembly by single pole oscillating bearing; Described tripping mechanism assembly top is connected with the cylinder barrel bracket in the vertical struts being fixedly arranged on described T-shaped support; The top of the vertical struts of described T-shaped support is installed with guiding trestle, and described guiding trestle is provided with guide wheel.
Further scheme, the two ends of described single pole oscillating bearing are connected with tripping mechanism assembly and the cylinder end performing cylinder respectively by set nut; Described cylinder barrel bracket is spill, and its two side ends is respectively equipped with the ear seat axle sleeve for connecting tripping mechanism assembly.
Further scheme, described tripping mechanism assembly comprises the cylinder barrel of hollow, is arranged with dropout guide pin bushing in the bottom of described cylinder barrel, and described dropout guide pin bushing internal sleeve is provided with guide pillar assembly; The top inner sleeve of described cylinder barrel has piston assembly; Rapid abutting joint between guide pillar assembly and piston assembly or Quick release is realized by performing cylinder flexible; The top of described cylinder barrel is installed with top cover; The outer end, top of described cylinder barrel is installed with shipping and reselling on another market of being connected with described cylinder barrel bracket.
Further scheme, described cylinder barrel offers the kidney slot for observing.
Further scheme, described dropout guide pin bushing is connected and fixed by the bottom of screw and cylinder barrel; Described top cover is connected and fixed by the top of screw and cylinder barrel.
Further scheme, described guide pillar assembly comprises the guide pillar be connected with described single pole oscillating bearing, offers interior counterbore, be installed with lower latch spring in described interior counterbore in the middle of the top of described guide pillar; The top of guide pillar is fixedly connected with snap close guide pin bushing; Described snap close guide pin bushing internal vertical is provided with crossover sub; The top of described crossover sub is connected with quick change male contact, bottom through the top being positioned at described lower latch spring bottom snap close guide pin bushing; Crossover sub between snap close guide pin bushing and quick change male contact is arranged with latch spring.
The bottom of described crossover sub is fixed on the bottom face of snap close guide pin bushing by hold-down nut.
Described piston assembly comprises the screw thread hanger for joint test load, is also fixedly connected with quick change famale connector through piston after the described bottom of screw thread hanger is fixedly connected with the bottom of piston; Be arranged with dropout Hough pair in the latch closure ring of described quick change famale connector bottom periphery, bottom the periphery that described dropout Hough is right, be provided with dropout boss; The screw thread hanger being positioned at upper piston area is arranged with buffer spring, the screw thread hanger being positioned at buffer spring upper end is installed with for spacing loose rib and standard back-up ring.
Quick change famale connector in the present invention and quick change male contact are hydraulic quick connectors pair, are standardized products.Wherein be provided with steel ball snap close bottom quick change famale connector, releasing ring on quick change famale connector is upwards run by External Force Acting, quick change male contact is made to enter quick change famale connector inner, realize groove on quick change male contact to carry out docking or being separated with quick change famale connector steel ball snap close, then releasing ring under the action of the spring self-return carry out snap close.
T-shaped support in the present invention is the carrier that all the other parts are installed, and performs the power that cylinder provides whole test unit, and the effect of single pole oscillating bearing is the axial deviation between execution cylinder and tripping mechanism assembly eliminated, to ensure the normal delivery of power.Tripping mechanism assembly is the core institution of this device, joint test load, realizes the quick release of load simultaneously, reaches the object to parts repeated impact test.
The endoporus of dropout guide pin bushing in the present invention matches with the cylindrical of guide pillar, thus realizes the guiding of whole device; In addition, dropout guide pin bushing also achieves the disengagement action between piston assembly and guide pillar assembly.
The endoporus of cylinder barrel and the cylindrical of piston, by clearance fit, ensure that guide pillar assembly and piston assembly precise positioning in motion process, improve the reliability of rapid abutting joint.
Ship and resell on another market and be welded on cylinder barrel outer wall and be connected with ear seat axle sleeve, because ear seat axle sleeve is actively installed on cylinder barrel bracket, so cylinder barrel bracket and ear seat axle sleeve with the use of, tripping mechanism assembly can be rotated freely within the specific limits, avoids whole mechanism to occur the phenomenons such as stuck.
End cap periphery is connected with cylinder barrel by screw, and the buffer spring of screw thread hanger in the middle of end cap in hole between screw thread hanger and piston is for the power of absorption test load in return stroke, plays the effect of buffering.The middle part of screw thread hanger is sheathed is provided with loose rib, to be contacted realize the spacing of piston assembly by loose rib with end cap; The middle part of screw thread hanger is arranged with for carrying out spacing standard back-up ring to buffer spring profit.
The bottom of described crossover sub is through snap close guide pin bushing bottom through-hole, and through hole internal diameter coordinates with the Excircle machining face of crossover sub, ensure that quick change male contact is at the total precise positioning of motion process.
The present invention is a fully mechanical parts impact fatigue testing machine tool device, this device mainly utilize hydraulic pressure hydraulic quick coupler to corresponding mechanical mechanism design forming quick-release mechanism assembly.By being connected to the test load on quick-release mechanism assembly, achieve load freely impacting parts, thus achieve freely impacting of test load, reach the object of the impact fatigue behavior of checking parts, thus find out the thin spot of each parts, improve the safety in utilization of parts and car load, effectively promote improvement and the upgrading of product, accelerate the speed that it is introduced to the market.This device also easily extensible carries out parts fall-down test as fall-down test device.
This device is bolted in track by T-shaped, by rope joint test load on screw thread hanger, join dependency gas circuit assembly and electric controling element, be used for checking by the presentation quality of test specimen, confirm the integrality of weld seam and structure, time necessary, do defect detecting test to by examination parts.Observed once by test specimen every 1 hour in testing process, see if there is permanent deformation and weld seam and the failure conditions such as to tear, until test reaches the number of times of regulation.
So advantage of the present invention has:
This device is the impact fatigue behavior detecting related components, and its volume is little, occupation of land space is little, and magnitude of load is adjustable, can simulate the actual loading situation of related components.In addition, the testing process of this device is controlled, fault observe and easy to detect.The highly versatile of this device, easily extensible carries out the fall-down test of related components.This device is fully mechanical structure, and reliability is high, make and experimentation cost all relatively low.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the tripping mechanism assembly structure schematic diagram in the present invention;
Fig. 3 is the guide pillar assembly structure schematic diagram in the present invention;
Fig. 4 is the piston assembly structural representation in the present invention.
In figure: 1-T type support, 2-cylinder saddle, 3-performs cylinder, 4-single pole oscillating bearing, 5-tripping mechanism assembly: 51-kidney slot, 52-guide pillar assembly, 53-dropout guide pin bushing, 54-screw, 55-cylinder barrel, 56-ships and resell on another market, 57-piston assembly, 58-end cap, 521-guide pillar, latch spring under 522-, 523-hold-down nut, 524-crossover sub, 525-quick change male contact, the upper latch spring of 526-, 527-snap close guide pin bushing, 571-dropout boss, 572-dropout Hough pair, 573-quick change famale connector, 574-piston, 575-loose rib, 576-standard back-up ring, 577-buffer spring, 578-screw thread hanger, 6-cylinder barrel bracket, 7-ear seat axle sleeve, 8-guiding trestle, 9-guide wheel.
Embodiment
As shown in Figure 1, a kind of mechanical hook-up of parts repeated impact test, comprise T-shaped support 1, the horizonal base plate of described T-shaped support 1 is installed with cylinder saddle 2, described cylinder saddle 2 is connected with and performs cylinder 3, the cylinder end of described execution cylinder 3 is connected with tripping mechanism assembly 5 by single pole oscillating bearing 4; Described tripping mechanism assembly 5 top is connected with the cylinder barrel bracket 6 in the vertical struts being fixedly arranged on described T-shaped support 1; The top of the vertical struts of described T-shaped support 1 is installed with guiding trestle 8, and described guiding trestle 8 is provided with guide wheel 9.
Test load is connected by the upper end of rope with tripping mechanism assembly 5, and rope is led by guide wheel 9, improves the accuracy of test.
Further scheme, the two ends of described single pole oscillating bearing 4 are connected respectively by set nut and tripping mechanism assembly 5, the cylinder end that performs cylinder 3; Described cylinder barrel bracket 6 is spill, and its two side ends is respectively equipped with the ear seat axle sleeve 7 for connecting tripping mechanism assembly 5.
As shown in Figure 2, tripping mechanism assembly 5 comprises the cylinder barrel 55 of hollow, is arranged with dropout guide pin bushing 53 in the bottom of described cylinder barrel 55, and described dropout guide pin bushing 53 internal sleeve is provided with guide pillar assembly 52; The top inner sleeve of described cylinder barrel 55 has piston assembly 57; Rapid abutting joint between guide pillar assembly 52 and piston assembly 57 or Quick release is realized by performing cylinder 3 flexible; The top of described cylinder barrel 55 is installed with top cover 58; The outer end, top of described cylinder barrel 55 be installed be connected with described cylinder barrel bracket 6 ship and resell on another market 56.
Further scheme, described cylinder barrel 55 offers kidney slot 51(for observing as shown in Figure 1); Ship and resell on another market and 56 be welded on cylinder barrel 55 outer wall and be connected with the ear seat axle sleeve 7 be actively installed on cylinder barrel bracket 6, by cylinder barrel bracket 6 and ear seat axle sleeve 7 with the use of, tripping mechanism assembly 6 can be rotated freely within the specific limits, avoid whole mechanism to occur the phenomenons such as stuck.And the position of conveniently adjusted cylinder barrel 55, thus be convenient to observe the rapid abutting joint between guide pillar assembly 52 and piston assembly 57 by kidney slot 51 and throw off action.
Further scheme, described dropout guide pin bushing 53 is connected and fixed by the bottom of screw 54 with cylinder barrel 55; Described top cover 58 is connected and fixed by the top of screw 54 with cylinder barrel 55.
As shown in Figure 3, guide pillar assembly 52 comprises the guide pillar 521 be connected with described single pole oscillating bearing 4, offers interior counterbore, be installed with lower latch spring 522 in described interior counterbore in the middle of the top of described guide pillar 521; The top of guide pillar 521 is fixedly connected with snap close guide pin bushing 527; Described snap close guide pin bushing 527 internal vertical is provided with crossover sub 524; The top of described crossover sub 524 is connected with quick change male contact 525, bottom are positioned at described lower latch spring 522 top through the bottom of snap close guide pin bushing 527; Crossover sub 524 between snap close guide pin bushing 527 and quick change male contact 525 is arranged with latch spring 526.
Further scheme, the bottom of described crossover sub 524 is fixed on the bottom face of snap close guide pin bushing 527 by hold-down nut 523.
As shown in Figure 4, piston assembly 57 comprises the screw thread hanger 578 for joint test load, and the bottom of described screw thread hanger 578 is fixedly connected with the bottom of piston 574 rear and is fixedly connected with quick change famale connector 573 through piston 574; Be arranged with dropout Hough to 572 in the latch closure ring of described quick change famale connector 573 bottom periphery, described dropout Hough is provided with dropout boss 571 to bottom the periphery of 572; The screw thread hanger 578 being positioned at piston 574 top is arranged with buffer spring 577, the screw thread hanger 578 being positioned at buffer spring 577 upper end is installed with for spacing loose rib 575 and standard back-up ring 576.
The mechanical hook-up of this repeated impact test, specific works principle is decomposed as follows:
1, perform the rear end air inlet of cylinder 3, cylinder piston rod is released, passes to tripping mechanism assembly 5 by single pole oscillating bearing 4;
2, by the guide effect of dropout guide pin bushing 53, the stressed entirety of guide pillar assembly 52 moves upward, until the top of quick change male contact 525 on guide pillar assembly 52 contacts with the quick change famale connector 573 of piston assembly 57;
3, piston assembly 57 also moves upward together under the effect of guide pillar assembly 52 thrust, until the top of piston 574 contacts with end cap 58, achieves spacing;
4, because the releasing ring of quick change famale connector 573 is not thrown off, along with the piston rod performing cylinder 3 continues to release, upper latch spring 536 then on guide pillar assembly 52 and lower latch spring 522 are compressed, then quick change male contact 525 continues to move upward, until the top end face of snap close guide pin bushing 527 contacts to the dropout boss 571 on 572 with dropout Hough;
5, along with the piston rod performing cylinder 3 continues to release, then snap close guide pin bushing 527 promotes dropout Hough and moves upward together to 572, then drive the releasing ring on quick change famale connector 573 move upward and thread off, make quick change male contact 525 enter quick change famale connector 573 inside and dock; Now due to the position-limiting action of end cap 58, entirety moves upward release;
6, by electrical control, transfer the front end airflow performing cylinder 3 to, its piston rod drives guide pillar assembly 52 entirety to move downward;
7, because the rigidity of upper latch spring 536 and lower latch spring 522 is greater than the spring on quick change famale connector 573 in releasing ring, the end face of snap close guide pin bushing 527 is separated the dropout boss 571 on 572 with dropout Hough, and quick change male contact 525 and quick change famale connector 573 keep mated condition;
8, make the releasing ring return on quick change famale connector 573 after performing cylinder 3 continuation contraction, then quick change male contact 525 and quick change famale connector 573 are locked;
9, piston assembly 57 moves downward with guide pillar assembly 52 under the effect performing cylinder 3, pulls the test load be connected in piston assembly 57, until dropout Hough contacts with the upper surface of dropout guide pin bushing 53 to the dropout boss 571 on 572 simultaneously;
10, along with execution cylinder continuation effect, the releasing ring on quick change famale connector 573 is upwards backed down by dropout boss 571 by dropout guide pin bushing 53, after releasing ring arrives certain position, and quick change male contact (28) and change famale connector (30) unblock and be separated;
11, piston assembly 57 is separated with guide pillar assembly 52 under the retroaction of test load, and piston assembly 57 moves upward under the guide effect of cylinder barrel 55;
12, after loose rib 575 contacts with end cap 58, buffer spring 577 is compressed, and realizes the steady release of the kinetic energy of piston assembly 57, avoids producing device entirety impacting; Complete a do action, this continues to carry out, until terminate.
Above embodiment is not limited only to protection scope of the present invention, all modify based on basic thought of the present invention or change all belong to protection scope of the present invention.
Claims (8)
1. the mechanical hook-up of a parts repeated impact test, comprise T-shaped support (1), it is characterized in that: the horizonal base plate of described T-shaped support (1) is installed with cylinder saddle (2), described cylinder saddle (2) is connected with and performs cylinder (3), the cylinder end of described execution cylinder (3) is connected with tripping mechanism assembly (5) by single pole oscillating bearing (4); Described tripping mechanism assembly (5) top is connected with the cylinder barrel bracket (6) in the vertical struts being fixedly arranged on described T-shaped support (1); The top of the vertical struts of described T-shaped support (1) is installed with guiding trestle (8), and described guiding trestle (8) is provided with guide wheel (9).
2. the mechanical hook-up of a kind of parts repeated impact test according to claim 1, is characterized in that: the two ends of described single pole oscillating bearing (4) are connected respectively by set nut and tripping mechanism assembly (5) and the cylinder end that performs cylinder (3); Described cylinder barrel bracket (6) is spill, and its two side ends is respectively equipped with the ear seat axle sleeve (7) for connecting tripping mechanism assembly (5).
3. the mechanical hook-up of a kind of parts repeated impact test according to claim 1, it is characterized in that: described tripping mechanism assembly (5) comprises the cylinder barrel (55) of hollow, be arranged with dropout guide pin bushing (53) in the bottom of described cylinder barrel (55), described dropout guide pin bushing (53) internal sleeve is provided with guide pillar assembly (52); The top inner sleeve of described cylinder barrel (55) has piston assembly (57); Rapid abutting joint between guide pillar assembly (52) and piston assembly (57) or Quick release is realized by performing the flexible of cylinder (3); The top of described cylinder barrel (55) is installed with top cover (58); The outer end, top of described cylinder barrel (55) is installed with ship and resell on another market (56) that are connected with described cylinder barrel bracket (6).
4. the mechanical hook-up of a kind of parts repeated impact test according to claim 3, is characterized in that: described cylinder barrel (55) offers the kidney slot (51) for observing.
5. the mechanical hook-up of a kind of parts repeated impact test according to claim 3, is characterized in that: described dropout guide pin bushing (53) is connected and fixed by the bottom of screw (54) with cylinder barrel (55); Described top cover (58) is connected and fixed by the top of screw (54) with cylinder barrel (55).
6. the mechanical hook-up of a kind of parts repeated impact test according to claim 3, it is characterized in that: described guide pillar assembly (52) comprises the guide pillar (521) be connected with described single pole oscillating bearing (4), offer interior counterbore in the middle of the top of described guide pillar (521), in described interior counterbore, be installed with lower latch spring (522); The top of guide pillar (521) is fixedly connected with snap close guide pin bushing (527); Described snap close guide pin bushing (527) internal vertical is provided with crossover sub (524); The top of described crossover sub (524) is connected with quick change male contact (525), bottom are positioned at described lower latch spring (522) top through snap close guide pin bushing (527) bottom; Be positioned on the crossover sub (524) between snap close guide pin bushing (527) and quick change male contact (525) and be arranged with latch spring (526).
7. the mechanical hook-up of a kind of parts repeated impact test according to claim 6, is characterized in that: the bottom of described crossover sub (524) is fixed on the bottom face of snap close guide pin bushing (527) by hold-down nut (523).
8. the mechanical hook-up of a kind of parts repeated impact test according to claim 3, it is characterized in that: described piston assembly (57) comprises the screw thread hanger (578) for joint test load, the bottom of described screw thread hanger (578) is fixedly connected with the bottom of piston (574) rear and is fixedly connected with quick change famale connector (573) through piston (574); Be arranged with dropout Hough to (572) in the latch closure ring of described quick change famale connector (573) bottom periphery, described dropout Hough is to being provided with dropout boss (571) bottom the periphery of (572); The screw thread hanger (578) being positioned at piston (574) top is arranged with buffer spring (577), the screw thread hanger (578) being positioned at buffer spring (577) upper end is installed with for spacing loose rib (575) and standard back-up ring (576).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510554076.3A CN105067217B (en) | 2015-09-02 | 2015-09-02 | A kind of mechanical device of parts repeated impact test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510554076.3A CN105067217B (en) | 2015-09-02 | 2015-09-02 | A kind of mechanical device of parts repeated impact test |
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| Publication Number | Publication Date |
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| CN105067217A true CN105067217A (en) | 2015-11-18 |
| CN105067217B CN105067217B (en) | 2017-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510554076.3A Active CN105067217B (en) | 2015-09-02 | 2015-09-02 | A kind of mechanical device of parts repeated impact test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106053003A (en) * | 2016-07-27 | 2016-10-26 | 苏州博众精工科技有限公司 | Blocking mechanism |
| CN107101797A (en) * | 2017-06-01 | 2017-08-29 | 南京理工大学 | A kind of tubular experimental provision for measuring buffer shock resistance |
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| CN103926047A (en) * | 2014-05-06 | 2014-07-16 | 哈尔滨建成集团有限公司 | Packaging box drop test device and method |
| CN204128770U (en) * | 2014-10-14 | 2015-01-28 | 合肥工业大学 | Vertical drop formula impact experiment test platform |
| CN104655386A (en) * | 2015-01-29 | 2015-05-27 | 嘉瑞福(浙江)家具有限公司 | Full-automatic control chair seat impact resistance test device and test method |
| CN204903125U (en) * | 2015-09-02 | 2015-12-23 | 安徽合力股份有限公司 | Experimental mechanical device of spare part impact fatigue |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013072819A (en) * | 2011-09-28 | 2013-04-22 | Aron Kasei Co Ltd | Shock resistance test device |
| CN103926047A (en) * | 2014-05-06 | 2014-07-16 | 哈尔滨建成集团有限公司 | Packaging box drop test device and method |
| CN204128770U (en) * | 2014-10-14 | 2015-01-28 | 合肥工业大学 | Vertical drop formula impact experiment test platform |
| CN104655386A (en) * | 2015-01-29 | 2015-05-27 | 嘉瑞福(浙江)家具有限公司 | Full-automatic control chair seat impact resistance test device and test method |
| CN204903125U (en) * | 2015-09-02 | 2015-12-23 | 安徽合力股份有限公司 | Experimental mechanical device of spare part impact fatigue |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053003A (en) * | 2016-07-27 | 2016-10-26 | 苏州博众精工科技有限公司 | Blocking mechanism |
| CN106053003B (en) * | 2016-07-27 | 2018-12-07 | 博众精工科技股份有限公司 | blocking mechanism |
| CN107101797A (en) * | 2017-06-01 | 2017-08-29 | 南京理工大学 | A kind of tubular experimental provision for measuring buffer shock resistance |
| CN107101797B (en) * | 2017-06-01 | 2023-08-04 | 南京理工大学 | Cylindrical experimental device for measuring shock resistance of buffer |
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| CN105067217B (en) | 2017-12-19 |
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