CN209356142U - A kind of car deceleration device shell air tightness detection apparatus - Google Patents
A kind of car deceleration device shell air tightness detection apparatus Download PDFInfo
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- CN209356142U CN209356142U CN201821186966.9U CN201821186966U CN209356142U CN 209356142 U CN209356142 U CN 209356142U CN 201821186966 U CN201821186966 U CN 201821186966U CN 209356142 U CN209356142 U CN 209356142U
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- cylinder
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- extension bar
- pressure head
- low pressure
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Abstract
A kind of car deceleration device shell air tightness detection apparatus, including press device, upper sealing device, lower sealing device, air supply system, low pressure leak detection system, master control system, it is characterized by: above-mentioned upper sealing device, including extension bar and pressure head, the connection of the piston rod of the extension bar and cylinder, extension bar centre drill axial blind hole, extension bar bar portion bit pressure contracting air inflow openings and low-pressure leak instrument connect two, the hole radial hole penetrated through with blind hole, the tapping of radial hole front end, open the through-hole of overcompression air in the pressure head center, pressure head lower end annular groove covers sealing ring, under the effect of cylinder (13) pressure, it is sealed with reducer shell upper end oil sealing hole end surface (3).Above-mentioned lower sealing device is mounted at equipment platform central openings, and lower sealing device is that tubbiness seals cylinder, cylinder body upper end opening, with reducer shell lower end flange face sealing, including seal with O ring cylinder and narrow annulus microprotrusion linear sealing cylinder.
Description
Technical field
The utility model relates to auto parts and components quality testing field more particularly to a kind of airtight inspections of car deceleration device shell
Survey device and its detection method.
Background technique
Fig. 1, Fig. 2 are existing car deceleration device schematic diagram of housing structure.Since the technique of casting, environment are different, process
Car deceleration device shell after there may be penetrability cavity, micro-crack, once it is this with penetrability cavity or micro-
After the car deceleration device shell entrucking of crackle, since its inner sealing is poor, the lubricating oil in drive axle is caused to be easy logical
It crosses penetrability cavity or micro-crack leaks out, influence the function of retarder, make vehicle using difficulty, increase and use Che Chengben,
Cause economic loss, and if rear axle oil leak it is serious, can to vehicle safety run constitute a threat to, lead to the generation of accident.Cause
This is required to carry out air-leakage test to reducer shell before entrucking.
Existing detection device is subtracted shell upper end oil sealing hole and subtracted and adopted at end flange face under shell using oil cylinder or cylinder-pressing
It is realized and is sealed with thick rubber slab, but generally can not achieve reliable sealing, the reason is that: subtract shell upper end oil sealing hole (2) axis and subtracts shell
There is bias in lower end flange face (4) central axis, the pressing force for being transmitted to flange face by subtracting shell upper end cannot be uniformly distributed
On flange face, the small position of pressing force is also easy to produce leakage.And several bolt through-holes are drilled on reducer shell flange face,
When carrying out air seal test, compressed air may be revealed through bolt through-hole, caused sealing leak and can not be detected.For this purpose, needing
Will using the brush water on shell or it is underwater by the way of detect shell with the presence or absence of Air Leakage Defect.And the defect of above-mentioned detection method
Have: subtracting shell and come into contact in a large area water, local water easy-storing causes to get rusty；It cannot achieve the automatic operation of overall process, operating process pair
Worker's sense of responsibility requires height, and erroneous detection risk is big；Large labor intensity, especially working environment is very poor in winter；Leakage can not be read
The specific value of amount is not easy to analysis shell leakage reason.
Summary of the invention
In view of the above problems or defect, the utility model devise a kind of air tightness detection apparatus being automatically brought into operation and
Its detection method is detected for the leakproofness to car deceleration device shell.
The technical solution adopted in the utility model is:
A kind of car deceleration device shell air tightness detection apparatus, including press device, upper sealing device, lower sealing device, confession
Gas system, low pressure leak detection system, master control system, it is characterised in that:
Above-mentioned press device includes press frame and cylinder, and the press frame is fixed by bolts on platform, the gas
Cylinder is fixed by bolts to press frame top；
The piston rod of above-mentioned upper sealing device, including extension bar and pressure head, the extension bar and cylinder connects, extension bar center auger spindle
To blind hole, extension bar bar portion bit pressure contracting air inflow openings and low-pressure leak instrument connect radial hole of two, the hole with blind hole perforation, radial hole
Front end tapping, the pressure head use nylon material, and pressure head lower end diameter is 1-2mm smaller than reducer shell oil sealing bore dia, pressure head
Leading end chamfer, pressure head are bolted on the ring flange of extension bar lower end, close using O shape between extension bar lower end ring flange and pressure head
The through-hole of overcompression air is opened at seal sealing, pressure head center, and pressure head lower end annular groove covers sealing ring；
Above-mentioned lower sealing device is mounted at equipment platform central openings, and lower sealing device is that tubbiness seals cylinder, on cylinder body
End opening, with reducer shell lower end flange face sealing, including seal with O ring cylinder and narrow annulus microprotrusion linear sealing cylinder；The O
Shape circle sealing cylinder arranges rubber o-ring on sealed cylinder block end face of flange；The narrow annulus microprotrusion linear sealing cylinder is in sealing cylinder
Narrow annulus, narrow annulus upper berth rubber gasket are processed on body end face of flange；
The air supply system includes gas source, cylinder supply air line and low pressure supply air line, the cylinder supply air line and gas
Cylinder connection, the low pressure supply air line are connect with compressed air air inlet on extension bar, and to reducer shell inner inflatable, low pressure is supplied
Pressure reducing valve is set on air pipe；
The low pressure leak detection system includes low pressure leak detection pipeline and low pressure leak detection instrument, the low pressure on extension bar
Pneumatic joint is installed in leakage instrument interface front end tapping, is connected low pressure leak detection pipeline and is accessed low pressure leak detection instrument；
The master control system is mounted below equipment platform in electrical cabinet, is filled with press device, upper sealing device, lower sealing
It sets, the connection of air supply system, low pressure leak detection system signal, by receiving the signal of operation button output, driving is controlled to be set up
Standby to receive signal, the operation button is mounted in pressure head lateral frame.
The utility model beneficial effect is shown:
(1) whole process computer controls, high degree of automation, leakage automatic alarm occurs, caused by avoiding human factor
Error improves the accuracy of detection and the speed of detection, and then improves the efficiency entirely detected.
(2) it seals reliable and stable, guarantees 30,000 detection no replacement is required air lockings.
(3) without the detection of underwater or brush water, operating environment is improved, reduces part corrosion risk.
(4) microprotrusion linear sealing mode solves the problems, such as the sealing reliability in small space inner flange face, long service life.
(5) detection device complete machine relevance factor is improved, different reducer shells is examined only to need to change pressure head and sealing cylinder, section
Production and application cost is saved.
(6) whole process computer controls, and is easy to computer communication, realizes network monitoring.
Detailed description of the invention Fig. 1 is car deceleration device schematic diagram of housing structure.
Fig. 2 is car deceleration device shell flange face bolt hole and seam allowance gap schematic diagram.
Fig. 3 is a kind of car deceleration device shell air tightness detection apparatus structural schematic diagram of the utility model.
Fig. 4 is a kind of car deceleration device shell air tightness detection apparatus schematic perspective view of the utility model.
Fig. 5 is a kind of car deceleration device shell air tightness detection apparatus upper sealing device structure section view signal of the utility model
Figure.
Fig. 6 is O-ring sealing means schematic diagram when end flange face seam allowance is larger under reducer shell.
Fig. 7 is microprotrusion linear sealing schematic diagram when end flange face seam allowance is smaller under reducer shell.
Fig. 8 is that a kind of car deceleration device shell air tightness detection apparatus lower sealing device seal with O ring cylinder of the utility model is close
Envelope scheme schematic perspective view.
Fig. 9 is that a kind of car deceleration device shell air tightness detection apparatus lower sealing device seal with O ring cylinder of the utility model is close
Envelope scheme stereochemical structure schematic cross-sectional view.
Figure 10 is a kind of car deceleration device shell air tightness detection apparatus lower sealing device microprotrusion linear sealing of the utility model
Cylinder encapsulation scheme schematic perspective view.
Figure 11 is a kind of car deceleration device shell air tightness detection apparatus lower sealing device microprotrusion linear sealing of the utility model
Cylinder encapsulation scheme stereochemical structure schematic cross-sectional view.
In figure, 1, reducer shell；2, reducer shell upper end oil sealing hole；3, reducer shell upper end oil sealing hole end surface；
4, end flange face under reducer shell；5, reducer shell lower end flange face bolt hole；6, end flange face is stopped under reducer shell
Mouthful；8, equipment platform；9, cylinder is sealed；10, rubber slab；11, electrical cabinet；12, press frame；13, cylinder；14, gas source；15, gas
Cylinder supply air line；16, extension bar；17, blind hole；18, compressed air inlet port；19, low-pressure leak instrument interface；20, low pressure air supply pipe
Road；21, pressure reducing valve；22, low pressure leak detection pipeline；23, low pressure leak detection instrument；24, low pressure reveals instrument support；25, pressure head；
26, sealing ring；27, pressure head lateral frame；28, operation button；29, cylinder piston rod；30, O-ring seals；31, narrow annulus；
32, bolt；33, pressure ring, 34, gasket.A, need to detect the region of casting leakproofness；L, end flange face spiral shell under reducer shell
Keyhole and seam allowance gap；A, pressure head lower end；B, pressure head front end.
Specific embodiment is with reference to the accompanying drawings and detailed description described further the utility model.
The utility model provides a kind of car deceleration device shell air tightness detection apparatus, by 1 upper end oil sealing of reducer shell
Hole end surface 3 and lower end flange face 4 sealing, a series of processes such as detection of 1 casting flaw of reducer shell by PLC control system from
Dynamic control is completed.
As shown in Figure 3, Figure 4, the utility model include press device, upper sealing device, lower sealing device, air supply system,
Low pressure leak detection system, master control system, press device include press frame 12 and cylinder 13, and press frame 12 is fixed with bolt
On equipment platform 8, cylinder 13 is fixed by bolts to 12 top of press frame, and when detection, cylinder piston rod is as needed up and down
It moves back and forth.
As shown in figs. 3 and 5, upper sealing device is used to seal with reducer shell upper end oil sealing hole end surface 3, and device includes
Extension bar 16 and pressure head 25,16 threaded upper ends hole of extension bar is connect with 29 external screw thread of cylinder piston rod, in the present embodiment, in extension bar 16
Heart auger spindle is to 10 blind hole 17 of φ, 16 bar portion bit pressure contracting air inflow openings 18 of extension bar and 19 two, low-pressure leak instrument interface and blind hole 17
The radial hole of perforation；To prevent maloperation from weighing tested reducer shell wounded, pressure head 25 uses nylon material, 25 upper end of pressure head with connect
The connection of 16 lower end ring flange of bar, junction are sealed using sealing ring, prevent compressed air leakage；When test, different retarders
Shell matches different pressure heads, and in embodiment, being tested reducer shell oil sealing bore dia is respectively φ 62 and φ 65, pressure head 25
Point diameter need it is 1-2mm small than subtracting 2 diameter of shell oil sealing hole, then the pressure head 25 in the present embodiment include 60 pressure head of diameter phi and directly
Diameter φ 63 presses first two, and 25 Leading end chamfer of pressure head play the guiding role, and when carrying out compressing operation, retarder is inserted into 25 front end of pressure head
Shell oil sealing hole 2 prevents pressure partially, and 10 through-hole of φ is opened by compressed air in 25 center of pressure head, and 25 annular groove of pressure head covers sealing ring, in gas
Under the effect of 13 pressure of cylinder, sealed with reducer shell upper end oil sealing hole end surface 3.
As shown in Figure 2, Figure 3, Figure 4, lower sealing device is mounted at 8 central openings of equipment platform, and lower sealing device is bucket
Shape seals cylinder 9, and cylinder body upper end opening cooperates with the sealing of end flange face 4 under reducer shell.It is drilled on reducer shell flange face
Several bolt through-holes, when air seal test, in order to avoid compressed air may be revealed through bolt through-hole, we must illustrated
Sealing is realized in the range of L, therefore sealing cylinder 9 includes two kinds of seal with O ring cylinder and microprotrusion linear sealing cylinder.
Seal with O ring cylinder punishes several bolt through-hole edges of cloth in flange face and subtracts shell as shown in Fig. 6, Fig. 8, Fig. 9
When seam allowance position dimension L > 5mm, arrange that O-ring seals 30, pressure head 25 will slow down in plane on sealing 9 cylinder body flange face of cylinder
Device shell 1 is pressed onto 9 upper flanges face of sealed cylinder block, and O-ring seals 30 seal reducer shell (1) and sealing cylinder 9 between the two
Gap.In embodiment, be tested reducer shell seam allowance size φ 190(0-0.1) subtract shell, L 7mm, using in 190(
Diameter) × 3.55 O-ring seals.
Microprotrusion linear sealing cylinder, as shown in Fig. 7, Figure 10, Figure 11, when the bolt bore edges and retarder of flange face punishment cloth
When shell seam allowance 7≤5mm of gap size, because of the bolt hole on too close reducer shell flange face, sealed cylinder block flange end
The space of seal groove is not arranged in face, therefore, using a kind of method of narrow annulus microprotrusion linear sealing.In sealed cylinder block 9
On flange face, one protrusion 1.0mm's of processing, the narrow annulus 31 of section radius R1 is spreading the rubber material of one layer of 4mm thickness above
Gasket 34.After cylinder 13 pushes, projection contacts of the shell flange face on rubber slab and 9 end face of flange of sealed cylinder block, by
Relatively narrow in protrusion, unit pressure is larger, and rubber slab is reliably compacted, and realizes sealing.
Several screw holes are bored on sealing 9 flange face of cylinder, fasten pressure ring 33 with bolt 32, sealing 9 flange of cylinder will be laid in
Rubber slab on face compresses, and main function is to be in a fixed position rubber slab.Rubber slab within pressure ring inner ring not by
It compresses, rubber slab covers the protrusion on 9 end face of flange of cylinder body.In embodiment, seam allowance size φ 179(0-0.1) subtract
Shell, size L are 4mm, need to cut using linear sealing mode, raised annular radii φ 181, section radius R1, height 1mm
Face prevents sharp edge shearing sealing pad at semicircle.
Air supply system is as shown in Figure 3, Figure 4, including gas source 14, cylinder supply air line 15, low pressure supply air line 20 and decompression
Valve 21, cylinder supply air line 15 is connect with cylinder 13, and after ventilation, cylinder piston rod 29 can move up and down；The setting of pressure reducing valve 21 exists
On low pressure supply air line 20, low pressure supply air line 20 connects the compressed air inlet port 18 on extension bar 16, filters through pressure reducing valve 21
Be passed through by low pressure supply air line 20 from compressed air inlet port 18 with the compressed air of decompression, to reducer shell inside fill
Gas；
As shown in Figure 3, Figure 4, low pressure leak detection system includes low pressure leak detection pipeline 22 and low pressure leak detection instrument
23, pneumatic joint is installed in the 19 front end tapping of low-pressure leak instrument interface on extension bar 16, and connection low pressure leak detection pipeline 22 simultaneously connects
Enter low pressure leak detection instrument 23；
Master control system is mounted below equipment platform in electrical cabinet, with press device, upper sealing device, lower sealing device,
Air supply system, the connection of low pressure leak detection system signal, the signal exported by receiving operation button 28 drive controlled device
Signal is received, to complete entire detection process, the operation button 28 is mounted in pressure head lateral frame 27.
Claims (1)
1. a kind of car deceleration device shell air tightness detection apparatus, including press device, upper sealing device, lower sealing device, gas supply
System, low pressure leak detection system, master control system, it is characterised in that:
Above-mentioned press device includes press frame and cylinder, and the press frame is fixed by bolts on platform, and the cylinder is used
Bolt is fixed on press frame top；
The piston rod of above-mentioned upper sealing device, including extension bar and pressure head, the extension bar and cylinder connects, and extension bar centre drill is axially blind
Hole, extension bar bar portion bit pressure contracting air inflow openings and low-pressure leak instrument connect radial hole of two, the hole with blind hole perforation, radial hole front end
Tapping, the pressure head use nylon material, and pressure head lower end diameter is 1-2mm smaller than reducer shell oil sealing bore dia, pressure head front end
Chamfering, pressure head are bolted on the ring flange of extension bar lower end, and O-ring seals are used between extension bar lower end ring flange and pressure head
The through-hole of overcompression air is opened at sealing, pressure head center, and pressure head lower end annular groove covers sealing ring；
Above-mentioned lower sealing device is mounted at equipment platform central openings, and lower sealing device is that tubbiness seals cylinder, and cylinder body upper end is opened
Mouthful, with reducer shell lower end flange face sealing, including seal with O ring cylinder and narrow annulus microprotrusion linear sealing cylinder；The O-ring
Sealing cylinder arranges rubber o-ring on sealed cylinder block end face of flange；The narrow annulus microprotrusion linear sealing cylinder is in sealed cylinder block method
Narrow annulus, narrow annulus upper berth rubber gasket are processed on blue end face；
Above-mentioned air supply system includes gas source, cylinder supply air line and low pressure supply air line, and the cylinder supply air line and cylinder connect
It connects, the low pressure supply air line is connect with compressed air air inlet on extension bar, to reducer shell inner inflatable, low pressure air supply pipe
Road setting pressure reducing valve；
Above-mentioned low pressure leak detection system includes low pressure leak detection pipeline and low pressure leak detection instrument, the low-pressure leak on extension bar
Pneumatic joint is installed in instrument interface front end tapping, is connected low pressure leak detection pipeline and is accessed low pressure leak detection instrument；
Above-mentioned master control system is mounted below equipment platform in electrical cabinet, with press device, upper sealing device, lower sealing device,
Air supply system, the connection of low pressure leak detection system signal, by receiving the signal of operation button output, driving controlled device is connect
The collection of letters number, the operation button is mounted in pressure head lateral frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821186966.9U CN209356142U (en) | 2018-07-26 | 2018-07-26 | A kind of car deceleration device shell air tightness detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821186966.9U CN209356142U (en) | 2018-07-26 | 2018-07-26 | A kind of car deceleration device shell air tightness detection apparatus |
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| CN209356142U true CN209356142U (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821186966.9U Active CN209356142U (en) | 2018-07-26 | 2018-07-26 | A kind of car deceleration device shell air tightness detection apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624408A (en) * | 2021-09-06 | 2021-11-09 | 方盛车桥（柳州）有限公司 | Main reducer assembly gas tightness detection device |
-
2018
- 2018-07-26 CN CN201821186966.9U patent/CN209356142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624408A (en) * | 2021-09-06 | 2021-11-09 | 方盛车桥（柳州）有限公司 | Main reducer assembly gas tightness detection device |
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