NJS's high-power hydraulic pressure torque wrench ( hydraulic pressure twisting force wrench )
One , the produce is briefly introduced
Continuously the lifing of inflexible manufacturing industry technique level in the wake of our country , in the interest of guarrantees the produce quality , the high intensity the adoping bolt that much installation and facilities shall be wide-ranging increasingly , and the taut firm beforehand taut moment to the bolt proposes the rigorous demand , and especially stands the heavy load lotus to reach to pound intensely the heave-duty inflexible installation of vibration more significant , and for the sake of the raise whorl connections quality and dependability , the hydraulic pressure torque wrench is succeeded in the development to the well-developed technique of synthetical application home and abroad of this mill scientific and technical personnel to beforehand taut moment that the accurately control high intensity bolt connections , yet assists you to resolve this hard nut to crack .
The hydraulic pressure torque wrench is assists you to pack and pulls down bolt and nut , the ideal means of taut torque is screwed in control that moreover be able to be comparatively more exact , it widely is applicable to professions such as metallurgy , electric power , chemical industry , machine and communication and so on inflexible installation and facilities , that the significant bolt connections fixs reaching the disassembling maintenance , the capacity conveniently promptly completees you packs puling down the bolt mission , may effectively gurrantee the torque value that you requireed moreover .
Two , composition and the work rule
The hydraulic pressure torque wrench ( catching sight of the picture 1 ) consists of that the hand stirs the high-pressure pump with brings click pulley style hydraulic pressure torque wrench two sections . Controing the laddle that the hand stird the high-pressure pump , the hydraulic pressure vat comes into being thrust , and after crank system generation moment , spuing on the nut turns an angle , thereby cause the torque transmit to transmit on the inside six jiaos of muffs of the escapement brining connectioing to the bolt , according to requires beforehand the taut bolt .
The hand stirs that the high-pressure pump consists of controing the laddle , high-pressure pump , commutation valve , fuel tank and petroleum pipelines that pressure gange and girdle join speedily and so on . Brings the click pulley style hydraulic pressure wrench to consist of the high-handed oil rim , hydraulic oil vat , crank and anti-s force staff , escapement and muff and so on and the former the series driving force source components , the latter act as the torque executive body .
Three , the main distinguishing feature
The hydraulic pressure torque wrench havees the below distinguishing feature :
( 1 ) by means of the systematic pressure gange of hydraulic pressure can accurately and dependable control beforehand taut moment .
( 2 ) lift the whorl connections the steel degree , and cuts down the danger that bolt fatigue is crack .
( 3 ) gurrantee widely adoping the dependability that the high intensity bolt connections that eases weight with the interest with practise thrift the room .
( the 4 ) use limit is vast and it is powerful to adapt to , usable to the bolt and interior angle screw taut beforehand .
( 5 ) manipulating simply , it is convenient to employ , economic security .
The four , produce type reaches the bolt being applicable and the nut limit
1 type in the table , parameter and sphere of application
The largesttest pressure MPa of oil vat
Oil vat diameter Mm
The largesttest work torque N.m
Hydraulic pressure vat stroke muff street corner
The wrench is applicable the whorl limit ( wide tooth )
Five , the operation means
1 , on the basis of beforehand inside six jiaos of muffs are selected andd provide to the taut nut dimensions .
2 , the demand in accordance the nut need to screw tightly either loosening compose the click pulley ( employ the right side when screwing the taut nut to the click pulley , employ left wingly to the click pulley when loosening the nut ) .
The 3 , grip brings that the high pressure that joins the speedily and low pressure gum tube sticks in joint part with the commutation valve of wrench ( high-handed 1/4 " , the low pressure in the interest of 3/8 " ) , and the queen reaching the designated position is sticked in in the demand , and incites to action that the outer garment that joins speedily turns an angle , and with locking .
4 , the force staff revolting depend to be living on bearing suit either else stand anti- force space relevant inside six jiaos .
5 , wrench connecting lever street corner size ought to be dominateeed to be living revolts inner place the force staff demarcation angle limit .
6 , strike when being getting near , and ought to circle the air bleeder one week towards the left , and unfold the air bleeder , and closes down such afterwards dealing with the air to place the most atthe furthest end ofly .
7 , hand stirs that the pump strikes when being getting near , and according to the hydraulic pressure vat piston rod extending and shrinks turns the commutation valve laddle , and serveing as when the laddle is living the left wing side place , the piston rod piece is extended , on the contrary in the interest of shrinking , but the pressure is fragmentaryly when being living the intermediate place .
In immediate future 8 , strike when being getting near , and may obtain the torque value by means of watcing the pressure gange reading value ( MPa ) . Pressure value ( MPa ) that is living in the hour of comeing out the bureau torque value requireing ( N.m ) on the basis of 2 formula calculation giving out in the table in adance .
9 , beforehand taut end queen places the commutation valve laddle to the middle place , and causes such pressure go back fragmentaryly .
So in immediate future 10 , unload Gao low pressure gum Guan Shi that the lower bound joins speedily , and ought to first of all incite to action that the outer garment that joins speedily circles an angle , and causes such gap alignment spacing annul pushing forward , and may pull up out the connector .
Six , pay attention to the matter
1 , joins gum Guan Ying is in the free state , and must not wind being smaller than 500mm's ring into the diameter .
2 , hydraulic pressure wrench every joint being living is annul shaft and maneuver place and ought to be apply grease , and decreases thanks to the fact that the rub creates the torque loss .
3 , when doing the hydraulic pressure systematically must not join really in the way of the hand .
4 , unloads joins queen down speedily , that such joins to show partly employ the plastic material to top the shade residing .
5 , work oil adopts ordinary hydraulic oil , and such shop sign is in the interest of YA-N32G either YA-N45G . ( balanceing 20#'s machine oil ) . Dos inner place the system oil each year have to replace washes the filter .
Seven , the hydraulic pressure torque wrench is usied
1 , connection the wrench type that the dimensions limit was select the use that you require on the basis of the whorl , and must not employ small-size bugler's taut standard great admittedly of the wrench bolt .
2 , oil vat pressure must not overtake the largesttest oil pressure 63MPa so as not to injuring the hydraulic pressure system .
3 , the different distinct types wrenchs are reached in accordance the table 2 , relevant formula calculation your what needs pressure ( MPa ) either torque ( N.m ) .
Example 1: Emploing NJS-I's mould wrench , taut firm M30's bolt , the taut torque is in the interest of 1004N.m's look-up 2 on the basis of formula P=M1/158=1004/158 6.4MPa beforehand . The pressure gange indicator points out when 6.4MPa , in immediate future such torque in the interest of 1004N.m .
Example 2: Emploing NJS-II's mould wrench , taut firm M42's bolt , the taut torque is in the interest of 2806N.m's look-up 2 on the basis of formula P=M2/200=2806/200 14MPa beforehand . The pressure gange indicator points out when 14MPa , in immediate future such torque in the interest of 2806N.m .
Example 3: Emploing NJS-III's mould wrench , taut firm M64's bolt , the taut torque is in the interest of 10147N.m's look-up 2 on the basis of formula P=M3/236=10147/236 43MPa beforehand . The pressure gange indicator points out when 43MPa , in immediate future such torque in the interest of 10147N.m .
Example 4: Emploing NJS-IV's mould wrench , taut firm M80's bolt , the taut torque is in the interest of 19626N.m's look-up 2 on the basis of formula P=M4/657=19626/657 29.9MPa beforehand . The pressure gange indicator points out when 29.9MPa , in immediate future such torque in the interest of 19626N.m .
Example 5: Emploing NJS-V's mould wrench , taut firm M100's bolt , the taut torque is in the interest of 39960N.m's look-up 2 on the basis of formula P=M4/657=39960/657 60.8MPa beforehand . The pressure gange indicator points out when 60.8MPa , in immediate future such torque in the interest of 39960N.m .
On the contrary like known pressure ( MPa ) on the basis of the table 2 what is give relevant formula too may be requestted out the relevant torque ( N.m )
Table 2 hydraulic pressure torque wrench oil vats together with homologous torque along with pressure and torque calculation formula
Pressure gange reading MPa
In the way of employ P=M1/158 when the known torque of M1=158P is requestted pressure when the known pressure of NJS-I's mould is requestted the torque
In the way of employ P=M2/200 when the known torque of M2=200P is requestted pressure when the known pressure of NJS-II's mould is requestted the torque
In the way of employ P=M3/236 when the known torque of M3=236P is requestted pressure when the known pressure of NJS-III's mould is requestted the torque
In the way of employ P=M4/657 when the known torque of M4=657P is requestted pressure when the known pressure of NJS-IV ( V ) mould is requestted the torque
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