CN203629943U - Piston test tool - Google Patents
Piston test tool Download PDFInfo
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- CN203629943U CN203629943U CN201320764654.2U CN201320764654U CN203629943U CN 203629943 U CN203629943 U CN 203629943U CN 201320764654 U CN201320764654 U CN 201320764654U CN 203629943 U CN203629943 U CN 203629943U
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- piston
- sleeve
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- connecting rod
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- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 230000033001 locomotion Effects 0.000 abstract description 9
- 239000010720 hydraulic oil Substances 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 230000033764 rhythmic process Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 4
- 238000007906 compression Methods 0.000 abstract 4
- 239000007788 liquid Substances 0.000 description 10
- 238000013459 approach Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model discloses a piston test tool. The piston test tool comprises a cylinder body, a pressure-proof sealing cover, a base, a sleeve, a connection rod and a compression spring, wherein the pressure-proof sealing cover and the base are sealed at the both ends of the cylinder body respectively; the sleeve is fixedly arranged at the inner side of the pressure-proof sealing cover; the connection rod can axially move inside the sleeve; the compression spring is contained inside the sleeve; the both ends of the compression spring abut against the sleeve and the connection rod respectively. With the adoption of the piston test tool provided by the utility model, high-pressure high-frequency pulse hydraulic oil is introduced into a cylinder body in a test; the connection rod can axially move inside the sleeve under the impact effect of the pulse hydraulic oil, so that a piston also can synchronously and axially move together with the connection rod; furthermore, the reciprocating motion of the piston inside the cylinder body can be realized under the restoring force of the compression spring at the rhythm of the pulse hydraulic oil, so that the actual piston movement can be simulated to the greater extent. Therefore, the stress condition between a piston pin hole and a piston pin is more similar to the actual stress condition. The verifying accuracy of the fatigue intensity of the piston pin hole can be improved.
Description
Technical field
The utility model relates to Piston Machining technical field, particularly a kind of piston test frock.
Background technology
Along with engine is to the development of high power, high detonation pressure, high rotating speed, low emission direction, requirement to piston fatigue intensity and life-span is more and more higher, in order to make piston structure reach optimization, just need to be to the verification experimental verification that carries out in the fatigue strength of piston and life-span, by verification experimental verification, can shorten the construction cycle of piston.
At present, existing a kind of piston test frock as shown in Figure 1, is tested by the explosion pressure that piston pin hole position is born in cylinder sleeve, finally reaches the object of optimization piston pin-and-hole structure.This frock comprises pressure-resistant seal lid 1, cylinder body 5, base 7, stationary links 3 etc., stationary links 3 is fixed on pressure-resistant seal lid 1, piston 6 is fixed in stationary links 3 by piston pin 4, when test, in cylinder body 5, be filled with hydraulic oil 8 with sinusoidal wave load mode, hydraulic oil 8 carries out periodic shock to piston 6 heads, and hydraulic oil 8 is discharged from the oil-out 2 of cylinder body 5, thereby checking piston 6 heads and piston pin hole bear the fatigue strength of explosion pressure.But, piston 6 and stationary links 3 are in the time of the impact of pulse liquid force feed of bearing high voltagehigh frequency rate, piston 6 connecting rod 3 that is fixed withstands, can not be in the interior movement of cylinder body 5, make to produce rigid extruding between piston pin 4 and piston 6, cause piston pin hole stressed abnormal, serious wear, differ greatly with normal piston pin hole is stressed, thereby affected the correct judgement to piston pin hole fatigue strength.
In sum, how making the force-bearing situation between piston pin hole and piston pin approach real force-bearing situation, is those skilled in the art's problem demanding prompt solutions.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of piston test frock, so that the force-bearing situation between piston pin hole and piston pin approaches the force-bearing situation in piston real motion process, thus the accuracy of the fatigue strength of raising checking piston pin hole.
For achieving the above object, the utility model provides following technical scheme:
A kind of piston test frock, comprising:
Cylinder body, described cylinder body offers oil-out;
The pressure-resistant seal lid and bottom seat that is sealed in respectively described cylinder body two ends, offers oil-in on described base;
Also comprise:
Be fixed on the sleeve of the inner side of described pressure-resistant seal lid;
Can be in described sleeve axially movable connecting rod, one end of described connecting rod is provided with the connecting hole for connecting piston pin;
Be contained in described sleeve and two ends respectively with the Compress Spring of described sleeve and described connecting rod butt.
Preferably, in above-mentioned piston test frock, also comprise cover be fixed in described cylinder interior for coordinating with described piston the cylinder jacket contacting.
Preferably, in above-mentioned piston test frock, between described cylinder jacket and piston, be provided with piston ring.
Preferably, in above-mentioned piston test frock, the opening end of described sleeve is provided with the first limiting section; One end that is positioned at described sleeve of described connecting rod is provided with described the first limiting section and coordinates the second spacing limiting section.
Preferably, in above-mentioned piston test frock, the connecting portion of described base and described cylinder body is provided with O-ring seal.
Preferably, in above-mentioned piston test frock, between described pressure-resistant seal lid and described cylinder body, be threaded.
Compared with prior art, the beneficial effects of the utility model are:
The piston test frock that the utility model provides, be formed for the sealed chamber of accommodating piston and hydraulic oil by cylinder body, pressure-resistant seal lid and bottom seat, at the inner side of pressure-resistant seal lid fixed muffle, connecting rod can move axially in sleeve, between sleeve and connecting rod, is provided with Compress Spring.When test, piston is placed in cylinder body, by piston pin, piston pin hole is connected with the connecting hole of connecting rod, by the oil-in on base to the pulse liquid force feed that passes into high voltagehigh frequency rate in cylinder body, under the percussive action of pulse liquid force feed, because connecting rod can move axially in sleeve, therefore piston also can be synchronizeed and move axially with connecting rod in cylinder body, and under the restoring force effect of Compress Spring, coordinate the rhythm of pulse liquid force feed, realize the to-and-fro movement of piston in cylinder body, thereby simulate to a great extent real piston movement, with piston in prior art cannot move rigid extruding between caused piston pin hole and piston pin stressed compared with, the piston test frock that the utility model provides makes force-bearing situation between piston pin hole and piston pin more close to the force-bearing situation in piston real motion process, thereby improve the accuracy of the fatigue strength of checking piston pin hole.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or scheme of the prior art, to accompanying drawing that describe required use in embodiment or prior art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those skilled in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of piston test frock of the prior art;
The structural representation of a kind of piston test frock that Fig. 2 provides for the utility model embodiment;
The local structure for amplifying schematic diagram of a kind of piston test frock that Fig. 3 provides for the utility model embodiment.
In above-mentioned Fig. 1, pressure-resistant seal lid 1, oil-out 2, stationary links 3, piston pin 4, cylinder body 5, piston 6, base 7, hydraulic oil 8;
In Fig. 2 and Fig. 3, pressure-resistant seal lid 01, sleeve 02, the first limiting section 021, Compress Spring 03, oil-out 04, connecting rod 05, the second limiting section 501, piston pin 06, cylinder body 07, cylinder jacket 08, piston ring 09, piston 010, O-ring seal 011, base 012, oil-in 013, pulse liquid force feed 014.
Embodiment
The utility model provides a kind of piston test frock, makes the force-bearing situation between piston pin hole and piston pin approach the force-bearing situation in piston real motion process, thereby has improved the accuracy of the fatigue strength of checking piston pin hole.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Based on embodiment of the present utility model, all other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belong to the scope that the utility model is protected.
Please refer to Fig. 2 and Fig. 3, the structural representation of a kind of piston test frock that Fig. 2 provides for the utility model embodiment; The local structure for amplifying schematic diagram of a kind of piston test frock that Fig. 3 provides for the utility model embodiment.
The utility model embodiment provides a kind of piston test frock, comprises cylinder body 07, pressure-resistant seal lid 01, base 012, sleeve 02, connecting rod 05, Compress Spring 03; Wherein: on cylinder body, offer oil-out 04; Pressure-resistant seal lid 01 and base 012 are sealed in respectively the two ends of cylinder body 07, form a sealed chamber for accommodating piston 010 and pulse liquid force feed 014, offer oil-in 013 on base 012; Sleeve 02 is fixed on the inner side of pressure-resistant seal lid 01, and connecting rod 05 can be sheathed in described sleeve 02, and moves axially in sleeve 02, and one end of connecting rod 05 is provided with the connecting hole for connecting piston pin 06; Compress Spring 03 is contained in the inside of sleeve 02, and the two ends of Compress Spring 03 butt sleeve 02 and connecting rod 05 respectively.
The principle of work of above-mentioned piston test frock is: while test, piston 010 is connected in by piston pin 06 on the connecting hole of connecting rod 05, pressure-resistant seal lid 01 and base 012 are enclosed in cylinder body 07 two ends, piston 010 is contained in cylinder body 07, afterwards, pulse liquid force feed 014 by from the oil-in 013 on base 012 to the inner injection high voltagehigh frequency of cylinder body 07 rate, pulse liquid force feed 014 is carried out pulse shock to piston 010, after piston 010 is impacted, can move axially, because the connecting rod 05 being connected with piston 010 can move axially in sleeve 02, therefore, piston 010 moves axially together with connecting rod 05 in cylinder body 07, in mobile process, Compress Spring 03 is pushed by connecting rod 05, produce restoring force, in the time that the surge pressure of pulse liquid force feed 014 reaches smaller value, the restoring force of Compress Spring 03 oppositely pushes back connecting rod 05, and then piston 010 is oppositely moved, by periodic repetition, under the mating reaction of Compress Spring 03 and pulse liquid force feed 014, realize piston 010 moving back and forth in cylinder body 07, simulate comparatively truly the actual motion of piston 010 in cylinder body 07, with piston 6 of the prior art cannot move between the piston pin 4 that causes and piston pin hole rigid extruding stressed compared with, force-bearing situation between piston pin 06 and the piston pin hole of the piston test frock simulation that the utility model embodiment provides more approaches real force-bearing situation, thereby can verify more accurately the fatigue strength at piston pin hole position, for the improvement of follow-up piston structure provides reference information more accurately, and then shorten the R&D cycle.
Piston test frock is further optimized, piston test frock in the present embodiment also comprises that cover is fixed in the cylinder jacket 08 of cylinder body 07 inside, cylinder jacket 08 coordinates and contacts with piston 010, further, near real piston 010 working environment, makes authorization information more accurate.
Further, in the present embodiment, between cylinder jacket 08 and piston 010, be also provided with piston ring 09, further improve the sealing property of piston 010 and cylinder jacket 08, further approach the moving situation of real piston 010.
The present embodiment is optimized sleeve 02 and connecting rod 05, and the opening end of sleeve 02 is provided with the first limiting section 021, and one end that is positioned at sleeve 02 of connecting rod 05 is provided with and coordinates the second spacing limiting section 051 with the first limiting section 021.By the first limiting section 021 and the second limiting section 051 are set, make connecting rod 05 in sleeve 02, move back and forth Shi Buhui from sleeve 02 out, in the time that connecting rod 05 moves to the opening end of sleeve 02, limit the second limiting section 051 by the first limiting section 021 and continue mobile; The first limiting section 021 and the second limiting section 051 can be the ring-shaped steps that cooperatively interacts.Certainly, limiting section also can be set between sleeve 02 and connecting rod 05, in the time of the length long enough of sleeve 02, connecting rod 05 can from sleeve 02 out, therefore not need to arrange limiting section.According to actual needs, determine whether to arrange limiting section, the present embodiment is a preferred technical scheme, and the utility model is also not specifically limited.
In order to guarantee sealing good between base 012 and cylinder body 07, at base 012 and the connecting portion of cylinder body 07, O-ring seal 011 is set.
As optimization, between pressure-resistant seal lid 01 in the present embodiment and cylinder body 07, be threaded, in the end of cylinder body 07, external thread is set, on pressure-resistant seal lid 01, be provided with the internal thread coordinating with the external thread of cylinder body 07, when installation, pressure-resistant seal lid 01 thread seal be connected to the end of cylinder body 07.In addition, pressure-resistant seal lid 01 can also be bolted on the end face of cylinder body 07.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a piston test frock, comprising:
Cylinder body (07), described cylinder body (07) offers oil-out (04);
The pressure-resistant seal lid (01) and the base (012) that are sealed in respectively described cylinder body (07) two ends, offer oil-in (013) on described base (012);
It is characterized in that, also comprise:
Be fixed on the sleeve (02) of the inner side of described pressure-resistant seal lid (01);
Can be in described sleeve (02) axially movable connecting rod (05), one end of described connecting rod (05) is provided with the connecting hole for connecting piston pin (06);
Be contained in described sleeve (02) and two ends respectively with the Compress Spring (03) of described sleeve (02) and described connecting rod (05) butt.
2. piston test frock according to claim 1, is characterized in that, also comprise cover be fixed in described cylinder body (07) inner for coordinating with described piston (010) cylinder jacket (08) contacting.
3. piston test frock according to claim 2, is characterized in that, between described cylinder jacket (08) and piston (010), is provided with piston ring (09).
4. according to the piston test frock described in claim 1-3 any one, it is characterized in that, the opening end of described sleeve (02) is provided with the first limiting section (021); One end that is positioned at described sleeve (02) of described connecting rod (05) is provided with and coordinates spacing the second limiting section (051) with described the first limiting section (021).
5. piston test frock according to claim 4, is characterized in that, described base (012) is provided with O-ring seal (011) with the connecting portion of described cylinder body (07).
6. piston test frock according to claim 4, is characterized in that, between described pressure-resistant seal lid (01) and described cylinder body (07), is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320764654.2U CN203629943U (en) | 2013-11-28 | 2013-11-28 | Piston test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320764654.2U CN203629943U (en) | 2013-11-28 | 2013-11-28 | Piston test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203629943U true CN203629943U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320764654.2U Expired - Lifetime CN203629943U (en) | 2013-11-28 | 2013-11-28 | Piston test tool |
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| Country | Link |
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| CN (1) | CN203629943U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017880A (en) * | 2016-05-18 | 2016-10-12 | 中国北方发动机研究所(天津) | Piston mechanical fatigue tester capable of applying side force |
| CN106768781A (en) * | 2017-01-10 | 2017-05-31 | 北京强度环境研究所 | A kind of waveform generator for blocking impact test |
| CN107991051A (en) * | 2017-12-07 | 2018-05-04 | 浙江正泰电器股份有限公司 | The inspection equipment of plastic tube impact strength |
| CN109211553A (en) * | 2018-09-30 | 2019-01-15 | 滨州学院 | Piston pin hole fatigue experimental device and method |
| CN109612701A (en) * | 2018-12-12 | 2019-04-12 | 中国北方发动机研究所(天津) | The high detonation pressure simulator of piston element fatigue test |
-
2013
- 2013-11-28 CN CN201320764654.2U patent/CN203629943U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017880A (en) * | 2016-05-18 | 2016-10-12 | 中国北方发动机研究所(天津) | Piston mechanical fatigue tester capable of applying side force |
| CN106017880B (en) * | 2016-05-18 | 2018-11-02 | 中国北方发动机研究所(天津) | A kind of piston machine fatigue experimental device that can apply lateral force |
| CN106768781A (en) * | 2017-01-10 | 2017-05-31 | 北京强度环境研究所 | A kind of waveform generator for blocking impact test |
| CN106768781B (en) * | 2017-01-10 | 2024-05-10 | 北京强度环境研究所 | Waveform generator for blocking impact test |
| CN107991051A (en) * | 2017-12-07 | 2018-05-04 | 浙江正泰电器股份有限公司 | The inspection equipment of plastic tube impact strength |
| CN107991051B (en) * | 2017-12-07 | 2023-09-12 | 浙江正泰电器股份有限公司 | Equipment for testing impact resistance of plastic pipe |
| CN109211553A (en) * | 2018-09-30 | 2019-01-15 | 滨州学院 | Piston pin hole fatigue experimental device and method |
| CN109612701A (en) * | 2018-12-12 | 2019-04-12 | 中国北方发动机研究所(天津) | The high detonation pressure simulator of piston element fatigue test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |