CN203606094U - Small-bore enclosed container pressure loss detection device - Google Patents
Small-bore enclosed container pressure loss detection device Download PDFInfo
- Publication number
- CN203606094U CN203606094U CN201320799720.XU CN201320799720U CN203606094U CN 203606094 U CN203606094 U CN 203606094U CN 201320799720 U CN201320799720 U CN 201320799720U CN 203606094 U CN203606094 U CN 203606094U
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- Prior art keywords
- sleeve
- draw bar
- orienting sleeve
- guiding
- guide draw
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Abstract
The utility model discloses a small-bore enclosed container pressure loss detection device which is characterized in that: a guiding sleeve is arranged, and an axially movable guiding pull rod is arranged in the guiding sleeve. The external circumferential surface of the bottom part of the guiding pull rod is connected with a floating pressure head in a threaded way. The guiding pull rod is internally provided with an air ventilation hole. One end of the air ventilation hole is communicated with the measured air cavity on the end surface of the bottom part of the guiding pull rod, and the other end is communicated with an air measuring joint penetrating through a long hole of the side part of the guiding sleeve on the external side wall of the guiding pull rod. A position-limiting pressure sleeve is placed on the measured air hole. The position-limiting pressure sleeve is hung on the external periphery of the measured air hole via flanging. The end surface of the bottom part of the guiding sleeve is supported against the flanging of the position-limiting pressure sleeve. An elastic sealing sleeve is arranged between the position-limiting pressure sleeve and the floating pressure head. A sealing surface can be formed between the external circumferential surface of the elastic sealing sleeve and the internal wall of the measured air hole. The small-bore enclosed container pressure loss detection device is great in airtight performance so that detection data are ensured to be reliable and thus sealing performance of an axle housing can be ensured.
Description
Technical field
The utility model relates to a kind of small-bore closed container pressure loss detecting device, and more particularly especially in automobile assembling industry, vehicle bridge master subtracts in device, and vehicle bridge is subtracted to the axle housing device for detecting sealability that the sealing after combination detects with master.
Background technology
In prior art, be that axle housing sealing propertytest is realized by following manner to vehicle bridge with the main sealing propertytest subtracting after combination: elasticity plug with holes is inserted in the ventilative unthreaded hole of axle housing, the external diameter of elasticity plug is slightly larger than the aperture of ventilative unthreaded hole, so that elasticity plug relies on himself elasticity and hole wall to make up after inserting in ventilative unthreaded hole; But because ventilative unthreaded hole is directly to become to wear with drill bit, hole wall is coarse, himself elasticity of elasticity plug is swollen to rise limitedly, and this makes to make weak effect up between elasticity plug and the hole wall of ventilative unthreaded hole, and seriously, measurement data is with a low credibility in gas leakage; Elasticity plug, inserting after ventilative unthreaded hole, rises because its elasticity is swollen simultaneously, extracts comparatively difficulty, and damage is serious, and 20 axle housings of common every detection just may be scrapped an elasticity plug, and use cost is quite high.
Utility model content
The utility model is for avoiding the existing weak point of above-mentioned prior art, a kind of small-bore closed container pressure loss detecting device is provided, guarantee on the one hand to detect data reliable, guarantee the sealing of axle housing with this, and be unlikely to use intermediate axle shell leakage of oil, reduce on the other hand the damage amount of device in using, to reduce use cost.
The utility model is that technical solution problem adopts following technical scheme:
The design feature of the utility model small-bore closed container pressure loss detecting device is:
One orienting sleeve is set, in described orienting sleeve, arranging can axially movable guide draw bar, float top board has been threaded on the bottom outer circumference surface of guide draw bar, in guide draw bar, be provided with air hole, 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 that runs through orienting sleeve sidepiece slotted hole on the lateral wall of guide draw bar.
On tested pore, place spacing gland, 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, between the outer circumference surface of described elastic seal cartridge and the inwall of tested pore, can form sealing surface.
The design feature of the utility model small-bore closed container pressure loss detecting device is also: between described elastic seal cartridge and spacing gland and float top board, be to match with wedge shape inclined-plane, to make, under the common extruding of described spacing gland and float top board, forming sealing surface between the outer circumference surface of described elastic seal cartridge and the inwall of tested pore.
The design feature of the utility model small-bore closed container pressure loss detecting device is also: at the top of described orienting sleeve, end face arranges force bearing disk, at the top of described guide draw bar connecting thread bar, described threaded rod runs through described force bearing disk and rotating screw cap threaded engagement, and rotated by the trimming restriction of described force bearing disk, described force bearing disk is fixedly connected with orienting sleeve screw thread, and described rotating screw cap is supported on described force bearing disk.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model impermeability is good, can guarantee to detect data reliable, and guarantee the sealing of axle housing with this, and be unlikely to use intermediate axle shell leakage of oil.
2, the utility model testing process can not cause damage, and durability is good, and use cost is low.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation:
Fig. 2 a is the main TV structure schematic diagram of force bearing disk in the utility model:
Fig. 2 b is force bearing disk plan structure schematic diagram in the utility model;
Number in the figure: 1 guide draw bar, 1a threaded rod, 2 orienting sleeves, 2a orienting sleeve sidepiece slotted 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
Referring to Fig. 1, Fig. 2 a and Fig. 2 b, the version of the present embodiment small aperture closed container pressure loss detecting device is:
One orienting sleeve 2 is set, in orienting sleeve 2, arranging can axially movable guide draw bar 1, float top board 7 has been threaded on the bottom outer circumference surface of guide draw bar, in guide draw bar 1, be provided with air hole 4, 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 that runs through orienting sleeve sidepiece slotted hole 2a on the lateral wall of guide draw bar;
On tested pore, place spacing gland 5, 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; Between spacing gland 5 and float top board 7, be provided with elastic seal cartridge 6, between the outer circumference surface of elastic seal cartridge 6 and the inwall of tested pore, can form sealing surface, spacing gland 5 and elastic seal cartridge 6 are and slide on the bar 1 of guiding position, so that can move axially between guide draw bar 1 and spacing gland 5 and elastic seal cartridge 6.
Between elastic seal cartridge 6 and spacing gland 5 and float top board 7, be to match with wedge shape inclined-plane, to make, under the common extruding of spacing gland 5 and float top board 7, forming sealing surface between the outer circumference surface of elastic seal cartridge 6 and the inwall of tested pore.
At the top of orienting sleeve 2, end face arranges force bearing disk 3, at the top of guide draw bar 1 connecting thread bar 1a, threaded rod 1a runs through force bearing disk 3 and rotating screw cap 8 threaded engagement, and rotated by the trimming 3a restriction of force bearing disk, force bearing disk 3 is fixedly connected with orienting sleeve 2 screw threads, and rotating screw cap 8 is supported on force bearing disk 3 by support set 8a.
In the present embodiment, be to stop relatively rotating between guide draw bar 1 and orienting sleeve 2 with the trimming 3a in force bearing disk 3, reliable with safety action.The hypomere of guide draw bar 1 is set to the cylindric body of rod, to guarantee matching between itself and spacing gland 5 and float top board 7.The orienting sleeve sidepiece slotted hole 2a of orienting sleeve 2 sidepiece settings should guarantee to survey gas joint 10 enough distances that moves axially in orienting sleeve sidepiece slotted hole.Spline handle 9 is set on the lateral wall of orienting sleeve 2, so that operation; For the ease of assembling, the external diameter of elastic seal cartridge 6 and spacing gland 5 can be set than the little 0.5mm of internal diameter diameter of tested pore.
When use, elastic seal cartridge 6 is inserted in the ventilative unthreaded hole of axle shell 12 together with float top board 7, makes spacing pressure head 5 inconsistent with the surface of axle shell 12; One of operator holds spline handle 9, and another hand-screw turns rotating nut 8, and guide draw bar 1 is moved 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, rotating nut 8 pushes force bearing disk 3 downwards by its support set 8a, 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, so make elastic seal cartridge 6 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 play prevention gas leakage effect.
Detecting device 11 is connected with survey gas joint 10, and pressure-air enters in the tested axle housing of sealing by the air hole hole in guide draw bar 1, completes after ventilation, closes and detects air switch in box, cuts off the air inlet gas circuit of tested axle housing, enters pressure maintaining period; Record decompression amount and the proportionate relationship of dwell time in tested axle housing by detecting box, and judge that by this proportionate relationship whether the impermeability of tested axle housing is qualified.
Detect when complete, retrograde rotation rotating nut 8, guide draw bar 1 moves down, and promotes float top board 7 and moves down, and elastic seal cartridge 6 is recovered shape, now can in tested pore, take out pick-up unit easily.
Claims (3)
1. a small-bore closed container pressure loss detecting device, is characterized in that:
One orienting sleeve (2) is set, in described orienting sleeve (2), setting can axially movable guide draw bar (1), float top board (7) has been threaded on the bottom outer circumference surface of guide draw bar, in guide draw bar (1), be provided with air hole (4), 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) that runs through orienting sleeve sidepiece slotted hole on the lateral wall of guide draw bar;
On tested pore, place 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), between the outer circumference surface of described elastic seal cartridge (6) and the inwall of tested pore, form sealing surface.
2. small-bore according to claim 1 closed container pressure loss detecting device, it is characterized in that: between described elastic seal cartridge (6) and spacing gland (5) and float top board (7), be to match with wedge shape inclined-plane, to make under the common extruding of described spacing gland (5) and float top board (7), between the outer circumference surface of described elastic seal cartridge (6) and the inwall of tested pore, form sealing surface.
3. small-bore according to claim 1 closed container pressure loss detecting device, it is characterized in that: at the top end face of described orienting sleeve (2), force bearing disk (3) is set, at the top of described guide draw bar (1) connecting thread bar (1a), described threaded rod (1a) runs through described force bearing disk (3) and rotating screw cap (8) threaded engagement, and rotated by trimming (3a) restriction of described force bearing disk (3), described force bearing disk (3) is fixedly connected with orienting sleeve (2) screw thread, described rotating screw cap (8) is supported on described force bearing disk (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320799720.XU CN203606094U (en) | 2013-12-06 | 2013-12-06 | Small-bore enclosed container pressure loss detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320799720.XU CN203606094U (en) | 2013-12-06 | 2013-12-06 | Small-bore enclosed container pressure loss detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203606094U true CN203606094U (en) | 2014-05-21 |
Family
ID=50718760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320799720.XU Withdrawn - After Issue CN203606094U (en) | 2013-12-06 | 2013-12-06 | Small-bore enclosed container pressure loss detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203606094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759908A (en) * | 2013-12-06 | 2014-04-30 | 安徽巨一自动化装备有限公司 | Small-hole-diameter closed container decompression detection device |
-
2013
- 2013-12-06 CN CN201320799720.XU patent/CN203606094U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759908A (en) * | 2013-12-06 | 2014-04-30 | 安徽巨一自动化装备有限公司 | Small-hole-diameter closed container decompression detection device |
| CN103759908B (en) * | 2013-12-06 | 2016-02-10 | 安徽巨一自动化装备有限公司 | Small-bore closed container pressure loss detecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140521 Effective date of abandoning: 20160210 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |