CN103759908B - Small-bore closed container pressure loss detecting device - Google Patents
Small-bore closed container pressure loss detecting device Download PDFInfo
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- CN103759908B CN103759908B CN201310655486.8A CN201310655486A CN103759908B CN 103759908 B CN103759908 B CN 103759908B CN 201310655486 A CN201310655486 A CN 201310655486A CN 103759908 B CN103759908 B CN 103759908B
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- draw bar
- guide draw
- orienting sleeve
- tested
- spacing gland
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Abstract
The invention discloses a kind of small-bore closed container pressure loss detecting device, it is characterized in that: the guide draw bar that can move axially is set in orienting sleeve, the bottom outer circumference surface of guide draw bar has been threaded float top board, air hole is provided with in guide draw bar, one end of air hole is communicated with tested air cavity at the bottom end face of guide draw bar, and the other end is connected with the survey gas joint running through orienting sleeve sidepiece elongated hole on the lateral wall of guide draw bar; Tested pore places spacing gland, and spacing gland is articulated in the periphery of tested pore with flange, and orienting sleeve is shored on the flange of spacing gland with its bottom end face; Between spacing gland and float top board, be provided with elastic seal cartridge, can sealing surface be formed between the outer circumference surface and the inwall of tested pore of elastic seal cartridge.Impermeability of the present invention is good, can ensure to detect data reliable, ensure the sealing of axle housing with this.
Description
Technical field
The present invention relates to a kind of small-bore closed container pressure loss detecting device, more particularly especially in automobile industry, vehicle bridge master subtracts in device, to the axle housing device for detecting sealability that the sealing after vehicle bridge and master subtract combination detects.
Background technology
In prior art, sealing propertytest after subtracting combination to vehicle bridge with master and axle housing sealing propertytest are realized by following manner: apertured elastic plug is inserted axle housing and breathes freely in unthreaded hole, the external diameter of elasticity plug, slightly larger than the aperture of ventilative unthreaded hole, relies on himself elasticity and hole wall to make up to make elasticity plug after inserting in ventilative unthreaded hole; But because ventilative unthreaded hole directly becomes to wear with drill bit, hole wall is coarse, himself elasticity of elasticity plug is swollen to rise limited, and this makes to make weak effect up between the hole wall of elasticity plug and ventilative unthreaded hole, and gas leakage is serious, and measurement data is with a low credibility; Elasticity plug is after the ventilative unthreaded hole of insertion simultaneously, rises because its elasticity is swollen, and extract comparatively difficulty, damage is serious, and usually often detect 20 axle housings and just may scrap an elasticity plug, use cost is quite high.
Summary of the invention
The present invention is the weak point for avoiding existing for above-mentioned prior art, a kind of small-bore closed container pressure loss detecting device is provided, ensure to detect data on the one hand reliable, the sealing of axle housing is ensured with this, and be unlikely to use intermediate axle shell leakage of oil, reduce the damage amount of device in using on the other hand, to reduce use cost.
The present invention is that technical solution problem adopts following technical scheme:
The design feature of small-bore of the present invention closed container pressure loss detecting device is:
The guide draw bar that can move axially is set in orienting sleeve, the bottom outer circumference surface of guide draw bar has been threaded float top board, air hole is provided with in guide draw bar, one end of described air hole is communicated with tested air cavity at the bottom end face of guide draw bar, and the other end is connected with the survey gas joint running through orienting sleeve sidepiece elongated hole on the lateral wall of guide draw bar.
Tested pore places spacing gland, and described spacing gland is articulated in the periphery of tested pore with flange, and described orienting sleeve is shored on the flange of described spacing gland with its bottom end face; Between described spacing gland and float top board, be provided with elastic seal cartridge, can sealing surface be formed between the outer circumference surface and the inwall of tested pore of described elastic seal cartridge.
The design feature of small-bore of the present invention closed container pressure loss detecting device is also: described elastic seal cartridge be match with tapered ramp between spacing gland and float top board, to make, under the common extruding of described spacing gland and float top board, to form sealing surface between the outer circumference surface and the inwall of tested pore of described elastic seal cartridge.
The design feature of small-bore of the present invention closed container pressure loss detecting device is also: arrange guide draw bar and move axially drives structure, that force bearing disk is set at the top end face of described orienting sleeve, at the top connecting thread bar of described guide draw bar, described threaded rod runs through described force bearing disk and rotating screw cap threaded engagement, and limit rotation by the trimming of described force bearing disk, described force bearing disk and orienting sleeve screw thread consolidation, described rotating screw cap is supported on described force bearing disk.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, impermeability of the present invention is good, can ensure to detect data reliable, and ensure the sealing of axle housing with this, and be unlikely to use intermediate axle shell leakage of oil.
2, testing process of the present invention can not cause damage, and durability is good, and use cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention:
Fig. 2 a is the main TV structure schematic diagram of force bearing disk in the present invention:
Fig. 2 b is force bearing disk plan structure schematic diagram in the present invention;
Number in the figure: 1 guide draw bar, 1a threaded rod, 2 orienting sleeves, 2a orienting sleeve sidepiece elongated hole, 3 force bearing disks, 3a trimming, 4 air holes, 5 spacing glands, 6 elastic seal cartridges, 7 float top boards, 8 rotating screw caps, 8a support set, 9 spline handles, 10 survey gas joint, 11 detecting devices, 12 axle shells.
Embodiment
See Fig. 1, Fig. 2 a and Fig. 2 b, the version of the present embodiment small aperture closed container pressure loss detecting device is:
The guide draw bar 1 that can move axially is set in orienting sleeve 2, the bottom outer circumference surface of guide draw bar has been threaded float top board 7, air hole 4 is provided with in guide draw bar 1, one end of air hole 4 is communicated with tested air cavity at the bottom end face of guide draw bar, and the other end is connected with the survey gas joint 10 running through orienting sleeve sidepiece elongated hole 2a on the lateral wall of guide draw bar;
Tested pore is placed spacing gland 5, and spacing gland 5 is articulated in the periphery of tested pore with flange, and orienting sleeve 2 is shored on the flange of spacing gland 5 with its bottom end face; Elastic seal cartridge 6 is provided with between spacing gland 5 and float top board 7, sealing surface can be formed between the outer circumference surface and the inwall of tested pore of elastic seal cartridge 6, spacing gland 5 and elastic seal cartridge 6 are and slide on guiding position bar 1, to make guide draw bar 1 and can move axially between spacing gland 5 and elastic seal cartridge 6.
Elastic seal cartridge 6 be match with tapered ramp between spacing gland 5 and float top board 7, to make, under the common extruding of spacing gland 5 and float top board 7, to form sealing surface between the outer circumference surface and the inwall of tested pore of elastic seal cartridge 6.
Guide draw bar is set and moves axially drives structure, that force bearing disk 3 is set at the top end face of orienting sleeve 2, at the top connecting thread bar 1a of guide draw bar 1, threaded rod 1a runs through force bearing disk 3 and rotating screw cap 8 threaded engagement, and limit rotation by the trimming 3a of force bearing disk, force bearing disk 3 and orienting sleeve 2 screw thread consolidation, rotating screw cap 8 is supported on force bearing disk 3 by support set 8a.
Stop relatively rotating between guide draw bar 1 and orienting sleeve 2 with the trimming 3a in force bearing disk 3 in the present embodiment, reliable with safety action.The hypomere of guide draw bar 1 is set to the cylindric body of rod, to ensure matching between itself and spacing gland 5 and float top board 7.The orienting sleeve sidepiece elongated hole 2a that orienting sleeve 2 sidepiece is arranged should ensure to survey that gas joint 10 is enough in orienting sleeve sidepiece elongated hole moves axially distance.The lateral wall of orienting sleeve 2 arranges spline handle 9, so that operation; For the ease of assembling, the external diameter 0.5mm less of the internal diameter diameter of tested pore of elastic seal cartridge 6 and spacing gland 5 can be set.
During use, elastic seal cartridge 6 is inserted in axle shell 12 together with float top board 7 and breathes freely in unthreaded hole, makes spacing pressure head 5 inconsistent with the surface of axle shell 12; Operator one only holds spline handle 9, and another hand rotary motion nut 8, makes guide draw bar 1 move up, and guide draw bar 1 drives float top board 7 and elastic seal cartridge 6 to move up; Move up simultaneously at guide draw bar 1, force bearing disk 3 is pushed downwards by its support set 8a by rotating nut 8, and pressure is passed to spacing pressure head 5 by orienting sleeve 2, spacing pressure head 5 therefore stop elastic seal cartridge 6 on move, elastic seal cartridge 6 is so made to be produced radial deformation by axial compression between spacing pressure head 5 and float top board 7, gap between its deformation displacement volume filling elastic seal cartridge 6 and ventilative unthreaded hole and guide draw bar 1, thus serve and stop gas leakage effect.
Be connected with survey gas joint 10 by detecting device 11, pressure-air enters in the tested axle housing of sealing by the vent holes in guide draw bar 1, after completing ventilation, closes and detects air switch in box, cut off the air inlet gas circuit of tested axle housing, enter pressure maintaining period; Recorded the proportionate relationship of decompression amount and dwell time in tested axle housing by detection box, and judge that whether the impermeability of tested axle housing is qualified by this proportionate relationship.
When detecting complete, retrograde rotation rotating nut 8, guide draw bar 1 moves down, and promote float top board 7 and move down, elastic seal cartridge 6 is recovered shape, now can take out pick-up unit easily in tested pore.
Claims (2)
1. a small-bore closed container pressure loss detecting device, is characterized in that:
The guide draw bar (1) that can move axially is set in orienting sleeve (2), the bottom outer circumference surface of guide draw bar has been threaded float top board (7), air hole (4) is provided with in guide draw bar (1), one end of described air hole (4) is communicated with tested air cavity at the bottom end face of guide draw bar, and the other end is connected with the survey gas joint (10) running through orienting sleeve sidepiece elongated hole on the lateral wall of guide draw bar;
Tested pore is placed spacing gland (5), described spacing gland (5) is articulated in the periphery of tested pore with flange, described orienting sleeve (2) is shored on the flange of described spacing gland (5) with its bottom end face; Between described spacing gland (5) and float top board (7), be provided with elastic seal cartridge (6), can sealing surface be formed between the outer circumference surface and the inwall of tested pore of described elastic seal cartridge (6); Described elastic seal cartridge (6) be match with tapered ramp between spacing gland (5) and float top board (7), to make, under the common extruding of described spacing gland (5) and float top board (7), to form sealing surface between the outer circumference surface and the inwall of tested pore of described elastic seal cartridge (6).
2. small-bore according to claim 1 closed container pressure loss detecting device, it is characterized in that: guide draw bar is set and moves axially drives structure, that force bearing disk (3) is set at the top end face of described orienting sleeve (2), on top connecting thread bar (1a) of described guide draw bar (1), described threaded rod (1a) runs through described force bearing disk (3) and rotating screw cap (8) threaded engagement, and limit rotation by the trimming (3a) of described force bearing disk (3), described force bearing disk (3) is fixedly connected with screw thread with orienting sleeve (2), described rotating screw cap (8) is supported on described force bearing disk (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310655486.8A CN103759908B (en) | 2013-12-06 | 2013-12-06 | Small-bore closed container pressure loss detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310655486.8A CN103759908B (en) | 2013-12-06 | 2013-12-06 | Small-bore closed container pressure loss detecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103759908A CN103759908A (en) | 2014-04-30 |
| CN103759908B true CN103759908B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310655486.8A Active CN103759908B (en) | 2013-12-06 | 2013-12-06 | Small-bore closed container pressure loss detecting device |
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| CN (1) | CN103759908B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316271A (en) * | 2014-11-04 | 2015-01-28 | 天津博益气动股份有限公司 | Air tightness testing tool for valve bodies of unthreaded hole connector types |
| CN107179165A (en) * | 2017-04-24 | 2017-09-19 | 歌尔股份有限公司 | Air tightness test frock |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007144819A (en) * | 2005-11-28 | 2007-06-14 | Kyoraku Co Ltd | Method for inspecting pinholes of blow-molded article and other plastic hollow bodies |
| CN201289425Y (en) * | 2008-11-13 | 2009-08-12 | 王德琨 | Vacuum gun for leak detection of heat exchanger |
| CN201359552Y (en) * | 2008-12-03 | 2009-12-09 | 上海恒谊制药设备有限公司 | Bottle air leakage rapid detection machine |
| WO2011089707A1 (en) * | 2010-01-22 | 2011-07-28 | 日鍛バルブ株式会社 | Method of testing air-tightness of hermetically sealed lash adjuster |
| CN202133521U (en) * | 2011-07-15 | 2012-02-01 | 纽迪希亚制药(无锡)有限公司 | Diameter-variable plug |
| CN203606094U (en) * | 2013-12-06 | 2014-05-21 | 安徽巨一自动化装备有限公司 | Small-bore enclosed container pressure loss detection device |
-
2013
- 2013-12-06 CN CN201310655486.8A patent/CN103759908B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007144819A (en) * | 2005-11-28 | 2007-06-14 | Kyoraku Co Ltd | Method for inspecting pinholes of blow-molded article and other plastic hollow bodies |
| CN201289425Y (en) * | 2008-11-13 | 2009-08-12 | 王德琨 | Vacuum gun for leak detection of heat exchanger |
| CN201359552Y (en) * | 2008-12-03 | 2009-12-09 | 上海恒谊制药设备有限公司 | Bottle air leakage rapid detection machine |
| WO2011089707A1 (en) * | 2010-01-22 | 2011-07-28 | 日鍛バルブ株式会社 | Method of testing air-tightness of hermetically sealed lash adjuster |
| CN202133521U (en) * | 2011-07-15 | 2012-02-01 | 纽迪希亚制药(无锡)有限公司 | Diameter-variable plug |
| CN203606094U (en) * | 2013-12-06 | 2014-05-21 | 安徽巨一自动化装备有限公司 | Small-bore enclosed container pressure loss detection device |
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| Publication number | Publication date |
|---|---|
| CN103759908A (en) | 2014-04-30 |
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Address after: No.5821, Fanfu Avenue, Baohe District, Hefei City, Anhui Province Patentee after: Anhui Juyi Technology Co., Ltd Address before: Baohe District of Hefei City, Anhui province 230051 Baohe Industrial Park Jianghuai heavy industry base Patentee before: ANHUI JEE AUTOMATION EQUIPMENT Co.,Ltd. |