CN207456706U - A kind of tightness test device of rear axle of electric automobile - Google Patents
A kind of tightness test device of rear axle of electric automobile Download PDFInfo
- Publication number
- CN207456706U CN207456706U CN201721465498.4U CN201721465498U CN207456706U CN 207456706 U CN207456706 U CN 207456706U CN 201721465498 U CN201721465498 U CN 201721465498U CN 207456706 U CN207456706 U CN 207456706U
- Authority
- CN
- China
- Prior art keywords
- inlet pipe
- air inlet
- rear axle
- electric automobile
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of tightness test device of rear axle of electric automobile, its key points of the technical solution are that：Including detection device, the detection device includes air inlet pipe, is communicated in the charge gun of air inlet pipe one end and is arranged at the pressure gauge on charge gun and for detecting gas pressure in air inlet pipe；The inflation is robbed is connected to compressed air source away from one end of air inlet pipe；The one end of the air inlet pipe away from the charge gun is used to dock the intake valve of rear axle of electric automobile, charge gun is towards after injecting air in pontic, can the gas leakage situation in pontic be detected by the reading of pointer on pressure gauge, when being detected using above-mentioned tightness test device to the air-tightness inside rear axle of electric automobile, it can accurately and effectively find out the gas leakage situation inside rear axle of electric automobile, accuracy degree is high.
Description
Technical field
The utility model is related to air-leakage test field, the air-tight test dress of more particularly to a kind of rear axle of electric automobile
It puts.
Background technology
Common rear axle of electric automobile air-leakage test such as notification number is the Chinese utility model patent of CN204004374U,
It discloses axle housing air-tight test sealing devices, including being arranged at the baffle on the outside of two spindle noses with sealing ring, and pass through one
Root bolt is connected, and fixed setting is there are one screw rod in interior fastening plates, and screw rod is radially vertical with plane where interior fastening plates, outside
It is provided with hole on sealing plate, the hole that the screw rod in interior fastening plates is inserted on external seal plate simultaneously passes through nut and tightens；In outer sealing plate
Sealing ring is provided between bridge bag mouth outside, air intake valve and drain tap are additionally provided on outer sealing plate.
Then pontic can be put into fertilizer by above-mentioned tightness test device by air intake valve towards after injecting air in pontic
In soap pond, and according to bubble whether is generated in pond come determine axle housing whether gas leakage；Although this detection method is simple, need
Pontic is put into suds, pontic is taken out to the soap bubble wiped out on pontic again after detection and is dried,
Entire detection process is comparatively laborious.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of the airtight of rear axle of electric automobile
Property experimental rig, with the advantage that detection process is simple, detection efficiency is high.
The above-mentioned technical purpose of the utility model technical scheme is that：A kind of rear axle of electric automobile
Tightness test device, including detection device, the detection device includes air inlet pipe, is communicated in the inflation of air inlet pipe one end
It rifle and is arranged on charge gun and the pressure gauge for detecting gas pressure in air inlet pipe；The charge gun deviates from air inlet pipe
One end be connected to compressed air source；The one end of the air inlet pipe away from the charge gun be used for dock rear axle of electric automobile into
Air valve, charge gun can detect the gas leakage situation in pontic towards after injecting air in pontic by the reading of pointer on pressure gauge.
Through the above technical solutions, when needing to detect the air-tightness of rear axle of electric automobile, charge gun is connected to compression
Then air-source makes air inlet pipe butt up against the intake valve on automobile axle, the handle pressed on charge gun makes gas via air inlet
Pipe is entered in rear axle of electric automobile, while pressure gauge is filled with one atmospheric pressure value of generation due to gas；If rear axle of electric automobile
In situation about leaking air, the pointer in pressure gauge can deflect, in order to which testing staff observes the situation of gas leakage in time,
Entire detection process is fairly simple, and the display of testing result is more convenient, is conducive to improve the inspection of rear axle of electric automobile air-tightness
Survey efficiency.
Preferably, one end that the air inlet pipe is used to dock with the intake valve is fixedly connected with taper joint, the cone
Shape connector is equipped with external screw thread.
Through the above technical solutions, when air inlet pipe butts up against intake valve, can by taper joint by threads turn into
In air valve, so that the connection sealing of air inlet pipe and intake valve is stronger, to reduce the leakage of gas, so that the instruction of pressure gauge
It is more accurate, and then the precision of air-leakage test can be improved.
Preferably, the air inlet pipe is divided into the first air inlet pipe and the second air inlet pipe, and the air inlet pipe is connected equipped with three
Head, first air inlet pipe and the second air inlet pipe butt up against the two of which connector of the three-way connection, the three-way connection
The 3rd connector be connected with electronics air gauge；Connecting line, the other end of the connecting line are provided on the electronics air gauge
It is provided with power transformer.
Through the above technical solutions, when being filled with air progress air-leakage test in rear axle of electric automobile, it can startup power supply
Transformer makes voltage reach the voltage for being suitble to the work of electronics air gauge, and after ensureing the barometric normal work of electronics, air can
It is entered via three-way connection in electronics air gauge and generates a reading, if gas leakage is less in rear axle of electric automobile, pressure gauge
Indicators turn make the naked eyes None- identified of testing staff, the variation that can pass through reading in the electronics air gauge of higher precision carries out
Identification, in order to more intuitively find out gas leakage situation small in rear axle of electric automobile, makes the accuracy of detection of entire detection device
Higher；Meanwhile pressure gauge is conducive to improve the detection efficiency of entire detection device with the barometric collective effect of electronics.
Preferably, the blow vent of first air inlet pipe and second air inlet pipe be located at electronics it is barometric just under
Side.
Through the above technical solutions, when air is entered by air inlet pipe in rear axle of electric automobile, air can directly exist
It is just entered from bottom to top in electronics air gauge when reaching blow vent, making air, reduction is connected with three when by three-way connection
Head contact area, so as to reduce contact of the air with three-way connection and air inlet pipe junction, advantageously reduce air into
Enter into the gap between three-way connection and air inlet pipe, and then the reading admitted air into after electronics air gauge is more accurate.
Preferably, the junction of the electronics air gauge and the three-way connection is provided with sealing ring.
Through the above technical solutions, when air is entered via three-way connection in electronics air gauge, to increase electron gas
The leakproofness between table and three-way connection is pressed, it is several from what is overflowed between three-way connection and electronics air gauge to advantageously reduce air
Rate, after being further ensured that air enters electronics air gauge, the accuracy of barometer reading.
Preferably, insulation cable concentrator, the insulation line concentration are connected between the electronics air gauge and the three-way connection
Box is equipped with the through hole passed through for the connecting line.
Through the above technical solutions, when connecting line is long, collected after can connecting line being passed through to through hole to insulation joint
In box, in energization detection process, connecting line can be reduced exposed to the probability of abrasion is caused outside, to ensure the peace of testing staff
Entirely；When the power supply distance for needing to connect is longer, the connecting line in the cable concentrator that insulate can be taken out to increase connecting line from box
Length, with ensure detection be normally carried out.
Preferably, the insulation cable concentrator includes box cover and box body, and the end of the box cover is equipped with elastomer block, the box
The one side of body is equipped with slot, and the elastomer block is plugged with the slot.
Through the above technical solutions, when connecting line is collected to insulation cable concentrator, elastomer block can be inserted into slot
In, so that box cover is fixed on box body, and then connecting line is concentrated in box body；When needing to take out connecting line from box body
When, elastomer block is separated with slot, connecting line can be taken out by opening the lid, and simple operation is high.
Preferably, the elastomer block include be fixed on cover side wall the first fork plate and with first fork plate one
The second hinged fork plate is held, there are angle gaps, the angle gap between first fork plate and second fork plate to be located at
Away from the one side of the slot, be equipped with spring in the angle gap, the elastic force of the spring be applied to simultaneously the first fork plate with
Second fork plate.
Through the above technical solutions, when need by connecting line collect to insulation cable concentrator inside when, first by the first fork plate with
Hinge joint between second fork plate is inserted into slot, and the side wall of slot can generate squeezing action to the second fork plate, receive spring
Contracting, angle gap become smaller, until the first fork plate passes through slot, to complete the grafting between elastomer block and slot；When needs will be even
When wiring is taken out from box body, the second fork plate is squeezed, angle gap is made to become smaller, the second fork plate is separated with the cell wall of slot, is opened
Box cover, to take out the connecting line in the cable concentrator that insulate, whole simple operation is high.
In conclusion the utility model having the beneficial effect that in contrast to the prior art：
1st, after the air inlet pipe in detection device is docked with the intake valve of rear axle of electric automobile, charge gun is opened in pontic
Air is injected, to pass through the pointer variation detection in vivo gas leakage situation of bridge on pressure gauge；Entire detection process is fairly simple, inspection
The display of survey result is more convenient, is conducive to improve the detection efficiency of rear axle of electric automobile air-tightness.
2nd, three-way connection is connected in air inlet pipe, electronics air gauge is connected on three-way connection, high-precision electricity can be passed through
The variation of reading in sub- air gauge in order to more intuitively find out gas leakage situation subtle in rear axle of electric automobile, makes entirely to examine
Survey the accuracy of detection higher of device.
3rd, insulation cable concentrator is hinged between electronics air gauge and three-way connection, insulation cable concentrator includes box cover and box
Body, the end of box cover are equipped with elastomer block, and the one side of box body is equipped with slot, and connecting line can be taken in wherein, subtracted by insulation cable concentrator
The abrasion of few connecting line ensures the security of testing staff；Simultaneously insulate cable concentrator can by the grafting of elastomer block and slot with
Make the collection of connecting line or take out more convenient, whole simple operation height.
Description of the drawings
Fig. 1 is the overall structure figure that embodiment is connected with existing rear axle of electric automobile, for emphasis displaying embodiment and now
There is the overall structure that rear axle of electric automobile connects；
Fig. 2 is the overall structure figure of embodiment, for the overall structure of emphasis displaying embodiment；
Fig. 3 is the sectional view at three-way connection in embodiment, for the connection knot of each several part in emphasis displaying three-way connection
Structure；
Fig. 4 is the sectional view of insulation cable concentrator in embodiment, and disassembly and assembly structure between box cover and box body is shown for emphasis；
Fig. 5 is the enlarged drawing in A portions in Fig. 4, and elastomer block and the structure of slot are shown for emphasis.
Reference numeral：1st, detection device；11st, charge gun；12nd, pressure gauge；13rd, air inlet pipe；131st, the first air inlet pipe；132、
Second air inlet pipe；133rd, blow vent；2nd, rear axle of electric automobile；21st, pontic；22nd, intake valve；221st, internal thread；23rd, air bleeding valve
23；3rd, taper joint；31st, external screw thread；4th, three-way connection；41st, sealing ring；5th, electronics air gauge；6th, connecting line；7th, power supply transformation
Device；8th, insulate cable concentrator；81st, through hole；82nd, box cover；821st, elastomer block；8211st, the first fork plate；8212；Second fork plate；8213、
Angle gap；83rd, box body；831st, slot；9th, spring.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Referring to Fig. 1, existing rear axle of electric automobile 2 includes pontic 21, be provided on pontic 21 to inject gas into
Air valve 22 and the air bleeding valve 23 for discharging gas.
Referring to Fig. 1, Fig. 2, a kind of tightness test device of rear axle of electric automobile, for detecting rear axle of electric automobile 2
Air-tightness, including detection device 1, detection device 1 includes being passed through the air inlet pipe 13 of gas towards in intake valve 22, is communicated in air inlet pipe
The charge gun 11 of 13 one end and the pressure gauge 12 being arranged on charge gun 11；The one end of air inlet pipe 13 away from charge gun 11 is consolidated
Surely taper joint 3 is connected with, the lateral wall of taper joint 3 is equipped with external screw thread 31, the intake valve of existing rear axle of electric automobile 2
22 madial wall be equipped with 31 matched internal thread 221 of external screw thread, can taper joint 3 be connected to by intake valve by screw thread
After 22, gas is injected towards in pontic 21, is made at indicators turn to the particular pressure value on pressure gauge 12, after inflation,
The gas leakage situation in pontic 21 is determined by the deflection situation of pointer on pressure gauge 12 again.
Referring to Fig. 2, Fig. 3, air inlet pipe 13 is equipped with three-way connection 4, perpendicular to the joint of air inlet pipe 13 on three-way connection 4
Equipped with electronics air gauge 5, air inlet pipe 13 is divided for the first air inlet pipe 131 and the second air inlet pipe 132, the first air inlet pipe 131 and
Second air inlet pipe 132 and other two connector of three-way connection 4 are connected to each other, so that gas can be entered in electronics air gauge 5, the
The blow vent 133 of one air inlet pipe 131 and the second air inlet pipe 132 is located at the underface of electronics air gauge 5, leads to so that gas reaches
It is just entered from bottom to top in electronics air gauge 5 after gas port 133, reduces gas from the first air inlet pipe 131 and the second air inlet pipe
132 with the empty probability overflowed in connection gap of three-way connection 4, electronics air gauge 5 on the connectivity port madial wall of three-way connection 4
Equipped with sealing ring 41, to increase the leakproofness between electronics air gauge 5 and three-way connection 4.
Connecting line 6 is provided on electronics air gauge 5, the one end of connecting line 6 away from electronics air gauge 5 is provided with power supply transformation
Device 7, so that supply voltage reaches the voltage that suitable electronics air gauge 5 works, to ensure the normal work of electronics air gauge 5.
Insulation cable concentrator 8 is hingedly provided with referring to Fig. 4, Fig. 5, between electronics air gauge 5 and three-way connection 4, insulate line concentration
Box 8 includes box cover 82 and box body 83, and box cover 82 at the lid conjunction of box body 83 with being provided with the through hole 81 passed through for connecting line 6；
The stability when lid between box cover 82 and box body 83 closes in order to balance and convenience during dismounting, box cover 82 deviate from hinge joint
One side be equipped with elastomer block 821, the side wall of box body 83 is equipped with slot 831 that can be mating with elastomer block 821.
Elastomer block 821 include being fixedly connected on the first fork plate 8211 on 82 side wall of box cover and with the first fork plate 8211
Hinged the second fork plate 8212 in one end, the hinge joint is towards the one side of slot 831, the first fork plate 8211 and the second fork plate 8212
Between be equipped with spring 9, the elastic force of spring 9 is applied to the first fork plate 8211 and the second fork plate 8212, makes the first fork plate 8211 simultaneously
There are angle gaps 8213, the angle gap 8213 between the second fork plate 8212 to be located at away from the one side of slot 831.
Practical work process：
When the rear axle to electric vehicle is needed to carry out air-leakage test, charge gun 11 is connected to compressed air source, and
Air inlet pipe 13 butted up against by taper joint 3 in the intake valve 22 on rear axle of electric automobile 2, then power transformer 7 is connected
In on power supply, having been turned on electronics air gauge 5, the handle pressed on charge gun 11 makes gas enter electronic vapour via air inlet pipe 13
In vehicle rear axle 2, indicators turn on pressure gauge 12 to one it is specific it is vertical on, while generated on the display screen of electronics air gauge 5
One basic atmospheric pressure value, if situation about leaking air in rear axle of electric automobile 2, the pointer in pressure gauge 12 can deflect, and
Numerical value on electronic pressure gage 12 can change.
After detection, after closing power supply, taper joint 3 is produced out of intake valve 22, then by charge gun 11 with compressing
Air-source disconnects, and is discharged the gas in rear axle of electric automobile 2 by air bleeding valve 23.
The above is only the exemplary embodiment of the utility model, the protection model rather than limited the present invention
It encloses, the scope of protection of the utility model is determined by appended claim.
Claims (8)
1. a kind of tightness test device of rear axle of electric automobile, including detection device (1), it is characterized in that：The detection device
(1) include air inlet pipe (13), be communicated in the charge gun (11) of air inlet pipe (13) one end and be arranged on charge gun (11) and use
In the pressure gauge (12) of detection air inlet pipe (13) interior gas pressure；The charge gun (11) connects away from one end of air inlet pipe (13)
In compressed air source；The one end of the air inlet pipe (13) away from the charge gun (11) is used to dock rear axle of electric automobile (2)
Intake valve (22), charge gun (11) can be examined towards after injection air in pontic (21) by the reading of pointer on pressure gauge (12)
Survey the gas leakage situation in pontic (21).
2. a kind of tightness test device of rear axle of electric automobile according to claim 1, it is characterized in that：The air inlet pipe
(13) one end for being docked with the intake valve (22) is fixedly connected with taper joint (3), and the taper joint (3) is equipped with
External screw thread (31).
3. a kind of tightness test device of rear axle of electric automobile according to claim 1, it is characterized in that：The air inlet pipe
(13) it is divided into the first air inlet pipe (131) and the second air inlet pipe (132), the air inlet pipe (13) is equipped with three-way connection (4), institute
It states the first air inlet pipe (131) and the second air inlet pipe (132) butts up against the two of which connector of the three-way connection (4), it is described
3rd connector of three-way connection (4) is connected with electronics air gauge (5)；Connecting line is provided on the electronics air gauge (5)
(6), the other end of the connecting line (6) is provided with power transformer (7).
4. a kind of tightness test device of rear axle of electric automobile according to claim 3, it is characterized in that：Described first into
Tracheae (131) and the blow vent (133) of second air inlet pipe (132) are located at the underface of electronics air gauge (5).
5. a kind of tightness test device of rear axle of electric automobile according to claim 3, it is characterized in that：The electron gas
Pressure table (5) and the junction of the three-way connection (4) are provided with sealing ring (41).
6. a kind of tightness test device of rear axle of electric automobile according to claim 3, it is characterized in that：The electron gas
Insulation cable concentrator (8) is connected between pressure table (5) and the three-way connection (4), the insulation cable concentrator (8) is equipped with for institute
State the through hole (81) that connecting line (6) passes through.
7. a kind of tightness test device of rear axle of electric automobile according to claim 6, it is characterized in that：The insulation collection
Wire box (8) includes box cover (82) and box body (83), and the end of the box cover (82) is equipped with elastomer block (821), the box body
(83) one side is equipped with slot (831), and the elastomer block (821) plugs with the slot (831).
8. a kind of tightness test device of rear axle of electric automobile according to claim 7, it is characterized in that：The elastomer block
(821) include the first fork plate (8211) for being fixed on box cover (82) side wall and cut with scissors with one end of first fork plate (8211)
The second fork plate (8212) connect, there are angle gaps between first fork plate (8211) and second fork plate (8212)
(8213), the angle gap (8213) is located at is equipped in the one side of the slot (831), the angle gap (8213)
Spring (9), the elastic force of the spring (9) are applied to the first fork plate (8211) and the second fork plate (8212) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721465498.4U CN207456706U (en) | 2017-11-06 | 2017-11-06 | A kind of tightness test device of rear axle of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721465498.4U CN207456706U (en) | 2017-11-06 | 2017-11-06 | A kind of tightness test device of rear axle of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207456706U true CN207456706U (en) | 2018-06-05 |
Family
ID=62254159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721465498.4U Expired - Fee Related CN207456706U (en) | 2017-11-06 | 2017-11-06 | A kind of tightness test device of rear axle of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207456706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044540A (en) * | 2019-05-31 | 2019-07-23 | 中国空气动力研究与发展中心高速空气动力研究所 | The pressurizer of model surface pressure tap and its application in a kind of test of wind tunnel pressure measuring |
-
2017
- 2017-11-06 CN CN201721465498.4U patent/CN207456706U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044540A (en) * | 2019-05-31 | 2019-07-23 | 中国空气动力研究与发展中心高速空气动力研究所 | The pressurizer of model surface pressure tap and its application in a kind of test of wind tunnel pressure measuring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 Termination date: 20181106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |