CN105444964B - The airtightness detection method and device of the lubricating oil packet of shaft gear case side - Google Patents
The airtightness detection method and device of the lubricating oil packet of shaft gear case side Download PDFInfo
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- CN105444964B CN105444964B CN201410404093.4A CN201410404093A CN105444964B CN 105444964 B CN105444964 B CN 105444964B CN 201410404093 A CN201410404093 A CN 201410404093A CN 105444964 B CN105444964 B CN 105444964B
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Abstract
The present invention provides a kind of airtightness detection methods of the lubricating oil packet of shaft gear case side, include the following steps: on the transmission shaft before machine, airtightness detection is carried out to the installation position of the first flange of one end far from the gear-box of the lubricating oil packet；On the transmission shaft after machine, airtightness detection is carried out to the installation position of the second flange of one end close to the gear-box of the lubricating oil packet.The present invention can ensure that the airtightness of the installation position of the flange at the both ends of the lubricating oil packet of gear-box side is intact, to guarantee the lubricating oil No leakage in equipment operation, ensure that safety in production, avoid unit exception and disorderly closedown.
Description
Technical field
The present invention relates to the detection fields of cold rolling machinery, in particular to a kind of lubricating oil packet of shaft gear case side is close
Closing property detection method and device.
Background technique
As shown in Figure 1, the transmission shaft 1 that the rack of cold-rolling mill uses is usually 10 form of barreled tooth flank.Due to drum-shaped tooth type
The stroke of transmission shaft 1 and the particularity of swing angle accommodate profit at drum type tooth 10 usually using lubricating oil packet 11,11 '
Lubricating oil.Lubricating oil packet positioned at the close gear-box (not shown) side of transmission shaft 1 is shown in FIG. 1 11, is located at close
The lubricating oil packet of roll side is shown in FIG. 1 11 '.
Since lubricating oil packet 11,11 ' is rubber product, easily it is lost, service life usually only some months.To replacement week
When the phase, need to replace the lower machine of transmission shaft 1 to the lubricating oil packet 11,11 ' of its two sides.
After the replacement of lubricating oil packet, the flange at the both ends of the lubricating oil packet 11 ' of roll side is installed when repairing, because
This can guarantee the leakproofness of its installation.But the installation of the lubricating oil packet 11 of gear box side is more complicated, as shown in Fig. 2, needing
The first flange 111 of its one end far from gear-box 2 is mounted on transmission shaft 1 when lubricating oil packet 11 is repaired, but its is close
On the output sleeve 20 that the second flange 112 of one end of gear-box 2 is just installed to gear-box 2 in machine on transmission shaft 1.
Due to the particularity of gear box side lubricating oil packet 11 during installation, it is easy to happen the flange peace at the both ends of lubricating oil packet
Situation not in place is filled, causes installation position that oil leak occurs, lubricating oil when transmission shaft 1 works inside lubricating oil packet can be in short-term
It is interior to have got rid of, it directly contributes barreled tooth flank 10 and works in the state of unlubricated, eventually damage barreled tooth flank 10 in a short time, from
And equipment fault is caused to shut down, it is brought greater impact to production activity.
Summary of the invention
For this purpose, the present invention provides a kind of airtightness detection methods of the lubricating oil packet of shaft gear case side, including such as
Lower step: S1. is on the transmission shaft before machine, to the first flange of one end far from the gear-box of the lubricating oil packet
Installation position carries out airtightness detection；S2. on the transmission shaft after machine, to the lubricating oil packet close to the gear-box
The installation position of the second flange of one end carries out airtightness detection.
Preferably, the airtightness detection is carried out using the compressed gas with predetermined pressure.
Preferably, the predetermined pressure is greater than or equal to transmission shaft lubricating oil packet in maximum (top) speed and is born
The pressure from its internal lubricating oil.
Preferably, the predetermined pressure by the transmission shaft lubricating oil packet in maximum (top) speed bear from its
1.3 times of the pressure of internal lubricating oil.
Preferably, the predetermined pressure is 0.38kgf/cm2。
The present invention also provides a kind of tightness detector of the lubricating oil packet of shaft gear case side, feature exists
In, comprising: can accommodate the barreled tooth flank of the transmission shaft, one end is provided with air inlet, the other end is provided with third flange
Seal casing；Steam hose and the first shut-off valve being connected in turn between the inlet end and outlet side of the steam hose,
Pressure reducing valve, first pressure gauge, the second shut-off valve and second pressure gauge.
Preferably, the pressure reducing valve has manual exhaust portion, and the range of the pressure reducing valve is 0.02~0.87MPa.
The present invention also provides the methods that the lubricating oil packet of a kind of pair of shaft gear case side carries out airtightness detection, special
Sign is, carries out the following steps of airtightness detection including the installation position to the first flange: S81. is by the third method
The blue and second flange airtight connection, is connected to compressed-air production apparatus, outlet for the inlet end of the steam hose
Hold airtight connection to the air inlet；S82. minimum range is set by the pressure reducing valve, opens first shut-off valve, closed
Second shut-off valve is passed through compressed air in the inlet end of the steam hose；S83. set predetermined for the pressure reducing valve
Pressure observes first pressure gauge, until pressure, which is stablized, executes S84；S84. the second shut-off valve is opened, second pressure gauge is observed, to
Stablize to pressure and closes the first shut-off valve and the second shut-off valve；S85. it keeps the predetermined time, the pressure that observation second pressure gauge is shown
Whether force value declines, and then judges that the airtightness of the installation position of the first flange is bad if any decline, judges if without decline
The airtightness of the installation position of the first flange is intact.
It further, further include the following steps that airtightness detection is carried out to the installation position of the second flange: S91.
The transmission shaft is installed on the output sleeve of the gear-box, the inlet end of the steam hose is connected to compressed air
Generate equipment, tank filler sleeve of the outlet side airtight connection to the output sleeve；S92. minimum is set by the pressure reducing valve
Journey opens first shut-off valve, closes second shut-off valve, is passed through compressed air in the inlet end of the steam hose；
S93. predetermined pressure is set by the pressure reducing valve, observes first pressure gauge, until pressure, which is stablized, executes S94；S94. is opened
Two shut-off valves observe second pressure gauge, until pressure, which is stablized, closes the first shut-off valve and the second shut-off valve；S95. pre- timing is kept
Between, whether the pressure value that observation second pressure gauge is shown declines, and then judges the installation position of the second flange if any decline
Airtightness is bad, and the airtightness of the installation position of second flange is intact as described in judgement if without decline.
Preferably, the predetermined time is 30 minutes.
The present invention by before the machine on transmission shaft to the installation of the first flange of one end of the separate gear-box of lubricating oil packet
Position carries out airtightness detection, and on transmission shaft after machine to the second flange of one end of the close gear-box of lubricating oil packet
Installation position carry out airtightness detection, it can be ensured that the installation position of the flange at the both ends of the lubricating oil packet of gear-box side it is close
Closing property is intact, to guarantee the lubricating oil No leakage in equipment operation, ensure that safety in production, avoids unit exception and failure
It shuts down.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of transmission shaft and its lubricating oil packet；
Fig. 2 is the mounting structure schematic diagram of transmission shaft and gear-box；
Fig. 3 is the flow diagram of the airtightness detection method of the lubricating oil packet of shaft gear case side of the invention；
Fig. 4 is first part's structure of the tightness detector of the lubricating oil packet of shaft gear case side of the invention
Schematic diagram；
Fig. 5 is the second part structure of the tightness detector of the lubricating oil packet of shaft gear case side of the invention
Scheme of installation；
Fig. 6 is the peace to first flange of the airtightness detection method of the lubricating oil packet of shaft gear case side of the invention
Fill the device connection schematic diagram that position carries out airtightness detection；
Fig. 7 is the peace to second flange of the airtightness detection method of the lubricating oil packet of shaft gear case side of the invention
Fill the device connection schematic diagram that position carries out airtightness detection.
Description of symbols:
1: transmission shaft 10: barreled tooth flank
11: the lubricating oil packet close to gear-box side
11 ': the lubricating oil packet close to roll side
111: first flange 112: second flange
2: gear-box 20: output sleeve 201: tank filler sleeve
30: the first part 300 of tightness detector: steam hose
3001: inlet end 3002: outlet side
301: the first shut-off valves 302: pressure reducing valve
303: 304: the second shut-off valve of first pressure gauge
305: second pressure gauge
31: the second part 310 of tightness detector: seal casing
311: air inlet 312: third flange
32: jointing
Specific embodiment
With reference to the accompanying drawings and detailed description to the airtightness of the lubricating oil packet of shaft gear case side of the invention
Detection method and device are described in further detail, but not as a limitation of the invention.
It is the process signal of the airtightness detection method of the lubricating oil packet of shaft gear case side of the invention referring to Fig. 3
Figure.The airtightness detection method of the lubricating oil packet of shaft gear case side of the invention, includes the following steps: S1. in transmission shaft
Before upper machine, airtightness detection is carried out to the installation position of the first flange of one end of the separate gear-box of lubricating oil packet；S2. it is passing
On moving axis after machine, airtightness detection is carried out to the installation position of the second flange of one end of the close gear-box of lubricating oil packet.
The method and apparatus for carrying out airtightness detection, can using various airtightness detection in the prior art method and
Device, for example, what the airtightness disclosed in the patent document of Publication No. CN103471785A or CN101059388A detected
Method and apparatus.
Preferably, airtightness detection method of the invention uses the compressed gas with predetermined pressure to carry out airtightness inspection
It surveys.In order to guarantee the reliability of airtightness detection, need using the compressed gas with certain pressure；Simultaneously, it is contemplated that use
The compressed gas of hypertonia will lead to the damage of lubricating oil packet, and the pressure of used compressed gas can not be excessive.Therefore, it needs
Determine the pressure for carrying out the suitable compressed gas of airtightness detection, i.e., above-mentioned predetermined pressure.
In general, the predetermined pressure should be greater than or equal to transmission shaft lubricating oil packet in maximum (top) speed be born from its
The pressure of internal lubricating oil.Preferably, predetermined pressure by transmission shaft the lubricating oil packet in maximum (top) speed bear from its
1.3 times of the pressure of internal lubricating oil.
The pressure for the lubricating oil inside it that lubricating oil packet is born when transmission shaft is in maximum (top) speed can not pass through
The technical parameter of lubricating oil packet is obtained or is unable to measure in the case where obtaining, and the maximum pressure can be obtained by calculating,
To calculate above-mentioned predetermined pressure.
It, can be with for example, the pressure P for the lubricating oil inside it that transmission shaft lubricating oil packet in maximum (top) speed is born
By calculate transmission shaft in maximum (top) speed to lubricating oil generate centrifugal force F and lubricating oil packet internal surface area A ratio come
It obtains, it may be assumed that
P=F/A=mv2R1/2πR2L2, wherein m is the quality of the lubricating oil in lubricating oil packet, and v is transmission shaft in maximum
Linear velocity when revolving speed, R1For the radius of the close gear-box side of transmission shaft, R2For the radius of lubricating oil packet, L2For lubricating oil
The length of packet.
Wherein, the quality m of the lubricating oil in lubricating oil packet can be calculate by the following formula:
M=ρ V, wherein ρ is the density of lubricating oil, and V is the volume of lubricating oil.In general, the density p of lubricating oil is 0.9 thousand
Gram/cubic decimeter, the volume V of the lubricating oil in lubricating oil packet are 5.8 cubic decimeters, the quality of the lubricating oil in lubricating oil packet
M is 7.65 kilograms.
Linear velocity v of the transmission shaft in maximum (top) speed can be calculate by the following formula:
V=nL1, wherein n is revolving speed of the transmission shaft in maximum (top) speed, and usual value is 526.316 revs/min, L1To pass
The perimeter of the close gear-box side of moving axis, with 2 π R1It calculates, in R1When value is 0.22 meter, L1It is 1.38 meters.It is possible thereby to
It calculates, linear velocity v of the transmission shaft in maximum (top) speed is 726.316 ms/min, i.e. 12.12 meter per seconds.
Radius R based on above data and formula and lubricating oil packet2For 0.1845 meter, the length L of lubricating oil packet2For
It 0.15 meter, can calculate, the pressure P for the lubricating oil inside it that transmission shaft lubricating oil packet in maximum (top) speed is born is
0.29kgf/cm2。
In view of the reliability of airtightness detection, compressed air pressure when actually detected is mentioned than theory detection pressure value
High by 30%, i.e., predetermined pressure preferred value is 1.3 times of the pressure value, as 0.38kgf/cm2。
It is for the tightness detector of the lubricating oil packet of shaft gear case side of the invention respectively referring to Fig. 4 and Fig. 5
First part 30 and second part 31 structure schematic diagram.
The first part 30 of the tightness detector of the lubricating oil packet of shaft gear case side of the invention includes ventilation
Hose 300, and be connected in turn between the inlet end 3001 of steam hose 300 and outlet side 3002 the first shut-off valve 301,
Pressure reducing valve 302, first pressure gauge 303, the second shut-off valve 304 and second pressure gauge 305.Shaft gear case side of the invention
Barreled tooth flank 10 of the second part 31 of the tightness detector of lubricating oil packet including transmission shaft 1 can be accommodated, one end setting
There are air inlet 311, the other end to be provided with the seal casing 310 of third flange 312.
Preferably, the bottom of the pressure reducing valve 302 has manual exhaust portion (for example, manual exhaust button), can hand at any time
It is dynamic that operation is exhausted to the overbottom pressure inside pressure reducing valve 302.According to the above-mentioned calculating to predetermined pressure it is found that the range of pressure reducing valve
Preferably 0.02~0.87MPa.
The present invention also provides the airtightness detection methods of the lubricating oil packet of the shaft gear case side based on above-mentioned apparatus.
Before carrying out airtightness detection using the device, airtightness detection, the i.e. inlet end in steam hose 300 first are carried out to the device
3001 are passed through compressed air, while outlet side 3002 being blocked, and keep whether pressure in 30 minutes observation pressure gauges has decline, from
And judge whether the device is closed.After confirming that the device is closed, it can start to the lubricating oil packet of shaft gear case side
Airtightness is detected.
On transmission shaft 1 before machine, to the mounting portion of the first flange 111 of one end of the separate gear-box 2 of lubricating oil packet 11
Position carries out airtightness detection.Step S81, as shown in fig. 6, by third flange 312 and second flange 112 on seal casing 310
Airtight connection is carried out by fastening bolt etc., the inlet end 3001 of steam hose 300 is connected to compressed-air production apparatus (example
Such as air compression station, air compressor), outlet side 3002 passes through the airtight connections such as jointing 32 to air inlet 311.
Step S82 sets minimum range for pressure reducing valve 302, opens the first shut-off valve 301, closes the second shut-off valve
304, compressed air is passed through in the inlet end 3001 of steam hose 300.Pressure reducing valve 302 is set predetermined pressure by step S83,
First pressure gauge 303 is observed, until pressure, which is stablized, executes S84.Step S84 opens the second shut-off valve 304, observes second pressure
Table 305, until pressure, which is stablized, closes the first shut-off valve 301 and the second shut-off valve 304.Step S85 is kept for the predetermined time (preferably
It is 30 minutes), whether the pressure value that observation second pressure gauge 305 is shown declines, and the peace of first flange 111 is then judged if any decline
The airtightness for filling position is bad, judges that the airtightness of the installation position of first flange 111 is intact if without decline.
On transmission shaft 1 after machine, to the mounting portion of the second flange 112 of one end of the close gear-box 2 of lubricating oil packet 11
Position carries out airtightness detection.Step S91 will lead to as shown in fig. 7, transmission shaft 1 is installed on the output sleeve 20 of gear-box 2
The inlet end 3001 of gas hose 300 is connected to compressed-air production apparatus (such as air compression station, air compressor etc.), outlet side
Tank filler sleeve 201 of 3002 airtight connections to output sleeve 20.
Step S92 sets minimum range for pressure reducing valve 302, opens the first shut-off valve 301, closes the second shut-off valve
304, compressed air is passed through in the inlet end 3001 of steam hose 300.Pressure reducing valve 302 is set predetermined pressure by step S93,
First pressure gauge 303 is observed, until pressure, which is stablized, executes S94.Step S94 opens the second shut-off valve 304, observes second pressure
Table 305, until pressure, which is stablized, closes the first shut-off valve 301 and the second shut-off valve 304.Step S95 is kept for the predetermined time (preferably
It is 30 minutes), whether the pressure value that observation second pressure gauge 305 is shown declines, and the peace of second flange 112 is then judged if any decline
The airtightness for filling position is bad, judges that the airtightness of the installation position of second flange 112 is intact if without decline.
After the completion of airtightness detection, can by the tank filler sleeve 201 of output sleeve 20 lubricating oil is injected into lubricating oil packet 11,
After install plug on tank filler sleeve 201.Later, transmission shaft 1 can carry out normal production operation.
The present invention provides the airtightness of the installation position of the flange at the both ends to the lubricating oil packet for protecting gear-box side
Completely, reliably, the detection scheme of safety, can its airtightness it is intact, to guarantee the lubricating oil No leakage in equipment operation, protect
Safety in production has been demonstrate,proved, unit exception and disorderly closedown are avoided.
The above specific embodiment is only exemplary embodiments of the present invention, it is impossible to be used in limits the present invention, the present invention
Protection scope be defined by the claims.Those skilled in the art can within the spirit and scope of the present invention, to this
Various modifications or equivalent replacements are made in invention, these modifications or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (8)
1. a kind of tightness detector of the lubricating oil packet of shaft gear case side characterized by comprising
Can accommodate the barreled tooth flank of the transmission shaft, one end is provided with air inlet, the other end is provided with the sealing of third flange
Housing；
Steam hose and the first shut-off valve being connected in turn between the inlet end and outlet side of the steam hose, decompression
Valve, first pressure gauge, the second shut-off valve and second pressure gauge；
The third flange can be with the second flange airtight connection of one end close to the gear-box of the lubricating oil packet.
2. the tightness detector of the lubricating oil packet of shaft gear case according to claim 1 side, which is characterized in that
The pressure reducing valve has manual exhaust portion, and the range of the pressure reducing valve is 0.02~0.87MPa.
3. a kind of airtightness of the lubricating oil packet of the shaft gear case side based on tightness detector described in claim 1
Detection method, which is characterized in that carry out the airtightness detection, the airtightness inspection using the compressed gas with predetermined pressure
Survey method includes the following steps:
S1. on the transmission shaft before machine, to the peace of the first flange of one end far from the gear-box of the lubricating oil packet
It fills position and carries out airtightness detection；
S2. on the transmission shaft after machine, to the peace of the second flange of one end close to the gear-box of the lubricating oil packet
It fills position and carries out airtightness detection；
Airtightness detection is carried out to the installation position of the first flange to include the following steps:
S81. by the third flange and the second flange airtight connection, the inlet end of the steam hose is connected to compression
Air generating device, outlet side airtight connection to the air inlet；
S82. minimum range is set by the pressure reducing valve, opens first shut-off valve, second shut-off valve is closed, in institute
The inlet end for stating steam hose is passed through compressed air；
S83. the predetermined pressure is set by the pressure reducing valve, observes the first pressure gauge, executed until pressure is stablized
S84；
S84. second shut-off valve is opened, the second pressure gauge is observed, until pressure, which is stablized, closes first shut-off valve
With the second shut-off valve；
S85. the predetermined time is kept, observes whether the pressure value that the second pressure gauge is shown declines, then judges institute if any decline
The airtightness for stating the installation position of first flange is bad, the airtightness of the installation position of first flange as described in judgement if without decline
It is intact.
4. the airtightness detection method of the lubricating oil packet of shaft gear case according to claim 3 side, which is characterized in that
Airtightness detection is carried out to the installation position of the second flange to include the following steps:
S91. the transmission shaft is installed on the output sleeve of the gear-box, the inlet end of the steam hose is connected to
Compressed-air production apparatus, tank filler sleeve of the outlet side airtight connection to the output sleeve；
S92. minimum range is set by the pressure reducing valve, opens first shut-off valve, second shut-off valve is closed, in institute
The inlet end for stating steam hose is passed through compressed air；
S93. predetermined pressure is set by the pressure reducing valve, observes the first pressure gauge, until pressure, which is stablized, executes S94；
S94. second shut-off valve is opened, the second pressure gauge is observed, until pressure, which is stablized, closes first shut-off valve
With the second shut-off valve；
S95. the predetermined time is kept, observes whether the pressure value that the second pressure gauge is shown declines, then judges institute if any decline
The airtightness for stating the installation position of second flange is bad, the airtightness of the installation position of second flange as described in judgement if without decline
It is intact.
5. the airtightness detection method of the lubricating oil packet of shaft gear case according to claim 3 or 4 side, feature exist
In the predetermined time is 30 minutes.
6. the airtightness detection method of the lubricating oil packet of shaft gear case according to claim 3 side, which is characterized in that
The predetermined pressure be greater than or equal to transmission shaft lubricating oil packet in maximum (top) speed born inside it
The pressure of lubricating oil.
7. the airtightness detection method of the lubricating oil packet of shaft gear case according to claim 3 side, which is characterized in that
The predetermined pressure is by the transmission shaft lubricating oil inside it that the lubricating oil packet is born in maximum (top) speed
1.3 times of pressure.
8. the airtightness detection method of the lubricating oil packet of shaft gear case according to claim 3 side, which is characterized in that
The predetermined pressure is 0.38kgf/cm2。
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| CN201410404093.4A CN105444964B (en) | 2014-08-15 | 2014-08-15 | The airtightness detection method and device of the lubricating oil packet of shaft gear case side |
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| CN201410404093.4A CN105444964B (en) | 2014-08-15 | 2014-08-15 | The airtightness detection method and device of the lubricating oil packet of shaft gear case side |
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| Publication number | Publication date |
|---|---|
| CN105444964A (en) | 2016-03-30 |
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