CN2150977Y - Torque moment controller for fastener fixer - Google Patents

Abstract

The utility model relates to a torque moment controller for a fastener fixer, which is composed of a piston, a plunger piston, a spring, two overrunning clutches, output shafts of an inner and an outer friction cones, a case, etc. The pulse rectilinear movement of the plunger piston is changed into the angular displacement of the overrunning clutches to drive the output shafts of the friction cones to output torque. Angular displacements can be accumulated, and the torque can be accurately controlled. The utility model has the advantages of simple structure, low cost, practicality and accurate positioning of torque moment. The utility model can be used for a fastener fixer which needs the torque moment.

Description

Torque moment controller for fastener fixer

The utility model relates to fastener installation tool, and the fastener installation tool that is used for controlling certain moment of torsion when securing member is installed of more clearly saying so is turned round controlling organization surely.

It is bigger that the general volume of controlling organization is turned round in domestic deciding at present.They remember mechanism with liquid and spring as energy, and control accuracy is poor, can not be used in require tightening torque accurately securing member install.Under the identical situation of tightening torque when requiring a plurality of securing members to install, be difficult to meet the demands.In other words, the fastener installation tool in past turns round surely that the controlling organization volume is big, and precision is low, can not be used in to require the accurately occasion of control tightening torque.

The purpose of this utility model just is to overcome above-mentioned shortcoming and defect, provide a kind of simple in structure, volume is little, cost is low, the fastener installation tool of tightening torque precise control is turned round controlling organization surely.

In order to achieve the above object, the utility model fastener installation tool turn round surely controlling organization by the housing that has the cylinder chamber, be installed in the torque-transmitting mechanisms in the housing, the torque limiting mechanism that is installed in the housing is constituted.Torque-transmitting mechanisms by be installed in the housing can straight-line and middle plunger and the back-moving spring thereof that has annular groove, can be in the annular groove of one end insertion plunger by the bearing pin of plunger swing, first freewheel clutch that the other end of outer ring and bearing pin is connected, the Wai Mo Ca Cone output shaft that is connected with the inner ring of the key and first freewheel clutch, inner ring and Wai Mo Ca Cone output shaft bonding and the outer ring is fixed on second freewheel clutch on the housing, piston in the cylinder chamber of wiping Cone output shaft one end and housing of rubbing outside is installed, be installed in the cylinder chamber of housing and Nei Mo Ca Cone output shaft formation that Yi Yuan Cone face engages with Wai Mo Ca Cone output shaft other end De Yuan Cone face.Torque limiting mechanism is fixed on the housing other end by an end and is fixed on giving on the Nei Mo Ca Cone output shaft and adds the reaction torque device and constituted.

The utility model is the outer ring of stirring first freewheel clutch with straight-line plunger, makes the pulse straight-line displacement be converted into the outer ring angular displacement.Second freewheel clutch adds up the pulse angle displacement, carries out work by outer, the Nei Mo Ca Cone output shaft output torque of being with Mo Ca Yuan Cone face.The qualification of its moment of torsion then will add the reaction torque device by giving.

Task of the present utility model comes to this and finishes.

The utility model is simple in structure, volume is little, cost is low.It has overcome tightening torque and has controlled inaccurate shortcoming, is that a kind of fastener installation tool of efficiently and accurately is turned round controlling organization surely.It can be widely used on fastener installation tool and Other Instruments, the equipment.

Below in conjunction with embodiment and accompanying drawing thereof the utility model is done further explanation.

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is the A-A cutaway view of Fig. 1.

Illustrated in figures 1 and 2, when compressed air or pressure oil or other work done medium entered the cylinder chamber 17 of housing 16, piston 2 moved to left and orders about Wai Mo Ca Cone output shaft 3 and be frictionally engaged with Nei Mo Ca Cone output shaft 10 Yi Yuan Cone faces 18.Thereby the angular displacement of Wai Mo Ca Cone output shaft 3 just can be by 10 outputs of Nei Mo Ca Cone output shaft.

Be installed in the plunger 1 that has annular groove 19 in the housing 16 and under the effect of intermittence external force P and back-moving spring 15, produce reciprocating motion (P power will enough overcome the reset force of back-moving spring 15), and make the outer ring 7 of first freewheel clutch 20 produce angular displacement by bearing pin 6.When plunger 1 is subjected to that intermittently external force P effect moves right, the outer ring 7 that the left side of the annular groove 19 of plunger 1 promotes bearing pin 6 and drives first freewheel clutch 20 clockwise rotates, the interior circle of outer ring 7 forces needle roller 8 to revolve round the sun clockwise, among the figure as can be seen the inner ring 9 of first freewheel clutch 20 do not change.Thereby also motionless with key 11 with Wai Mo Ca Cone output shaft 3 of its bonding, i.e. empty wagons.When external force P disappeared, back-moving spring 15 forced plunger 1 to move to left, and the right side of annular groove 19 promotes bearing pin 6 return that moves to left, and 7 of the outer rings of first freewheel clutch 20 rotate counterclockwise.The inner ring 9 that needle roller 8 blocks first freewheel clutch 20 makes it to rotate synchronously with outer ring 7.So Wai Mo Ca Cone output shaft 3 also rotates counterclockwise an angular displacement synchronously.The inner ring 5 that the rotation of Wai Mo Ca Cone output shaft 3 drives second freewheel clutch 21 again rotates synchronously.Thereby first, second freewheel clutch 20 and 21 is equidirectional settings, this moment second freewheel clutch, 21 empty wagons, Wai Mo Ca Cone output shaft 3 can rotate.Wai Mo Ca Cone output shaft 3 is passed to Nei Mo Ca Cone output shaft 10 to angular displacement by Yuan Cone face 18 simultaneously.Be installed with one between Nei Mo Ca Cone output shaft 10 and the housing 16 and give and add reaction torque device 14, as torsion spring etc., as torque limiting mechanism.The size of reaction torque increases with the increase of Nei Mo Ca Cone output shaft 10 angular displacements.The purpose of reaction torque is set, and is the angular displacement zero clearing with Nei Mo Ca Cone output shaft 10.When inside and outside Mo Ca Cone output shaft 10 and 18 disengagements of 3 De Yuan Cone faces, Nei Mo Ca Cone output shaft 10 is got back to the home position immediately under the reaction torque effect.

When intermittence, external force P occurred once more, plunger 1 moves to right again, and outer ring 7 clockwise rotates again, and needle roller 8 clockwise rotates, inner ring 9 is not worked, and Mo Ca Cone output shaft 3 clockwise rotated Wai at this moment Nei Mo Ca Cone output shaft 10 will drive by Yuan Cone face 18 under the reaction torque effect of reaction torque device 14.But, the outer ring 4 and the housing 16 of second freewheel clutch 21 are close to firmware 13 and are connected, the trend that Wai Mo Ca Cone output shaft 3 drive inner rings 5 clockwise rotate is prevented from, Wai Mo Ca Cone output shaft 3 can not clockwise rotate, the pulse angle displacement is just memorized, angular displacement is added up, and removes to drive fastener installation tool by Nei Mo Ca Cone output shaft 10.Surely turning round control is then realized by reaction torque device 14.As long as the each angular displacement of Nei Mo Ca Cone output shaft 10 is identical, the moment of torsion of transmission is also just identical.

When the work done pressure medium disappearance of piston 2 right-hand members, inside and outside Mo Ca Cone output shaft 10 and 3 De Yuan Cone faces 18 are thrown off, and angular displacement just can not be by 10 outputs of Nei Mo Ca Cone output shaft.On the contrary, it gets back to original position giving under the effect that adds reaction torque, prepares to carry out the output of angular displacement next time.

Present embodiment is made of housing 16, torque-transmitting mechanisms and torque limiting mechanism.Can constitute by bearing pin 6, first freewheel clutch 20, second freewheel clutch 21, key 11, Wai Mo Ca Cone output shaft 3, Nei Mo Ca Cone output shaft 10, the piston 2 of plunger 1 swing in the annular groove 19 of torque-transmitting mechanisms by plunger 1, back-moving spring 15, end insertion plunger 1.It is simple in structure, volume is little, and the moment of torsion precise control can be widely used in the fastener installation tool.

Claims (1)

1, a kind of fastener installation tool is turned round controlling organization surely, it is by the housing that has the cylinder chamber, be installed in the torque-transmitting mechanisms in the housing, the torque limiting mechanism that is installed in the housing constitutes, it is characterized in that said torque-transmitting mechanisms by be installed in the housing can rectilinear motion and middle plunger and the back-moving spring thereof that has annular groove, can be in the annular groove of one end insertion plunger by the bearing pin of plunger swing, first freewheel clutch that the other end of outer ring and bearing pin is connected, the external friction awl output shaft that is connected with the inner ring of the key and first freewheel clutch, inner ring and external friction awl output shaft bonding and the outer ring is fixed on second freewheel clutch on the housing, be installed in the piston in the cylinder chamber of external friction awl output shaft one end and housing, be installed in the cylinder chamber of housing and constituted with the interior cone of friction output shaft that the taper seat of the taper seat and the external friction awl output shaft other end engages, said torque limiting mechanism is fixed on the housing other end by an end and is fixed on giving on the interior cone of friction output shaft and adds the reaction torque device and constituted.

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