CN2394760Y

CN2394760Y - Nut dismantling machine

Info

Publication number: CN2394760Y
Application number: CN 99246704
Authority: CN
Inventors: 邱洪诗
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-10-13
Filing date: 1999-10-13
Publication date: 2000-09-06
Anticipated expiration: 2009-10-13

Abstract

The utility model discloses a nut dismantling machine for screwing or loosening nuts. A planetary gear is arranged on the main shaft of the power speed reduction drive device of the utility model and is respectively engaged with the gear on a motor shaft and the inner gear in the motor end cover. A pressure spring is sheathed on the main shaft, a movable sleeve pressing the pressure spring is movably installed on the main shaft, and a cross wrench shaft in embedded in the drive groove of the movable sleeve. When the rotation of an output shaft exceeds the selected torque, the movable sleeve is retracted by overcoming the pressure of the pressure spring, and the main shaft carries out idle rotation, so components screwed can be protected. Therefore, the utility model is convenient in operation and is capable of dismantling various nuts.

Description

The nut changer

The utility model relates to the portable power tools that screws or unclamp nut, especially a kind ofly is used for the nut changer that dismounting is ridden and climbed nut.

Ride and climb the axle housing that nut coupling " U " type bolt is used for the damping spring of motor vehicle is fixed on output shaft.By a kind of " ride and climb the nut changer " of two subsidiary factories of Zhejiang Province's fairy house county hydraulic part factory production and sales, mainly by the two-direction switch of the connecting axle of installing on the speed reduction gearing of power motor, transferring power motor power, the output shaft of outer sleeves, the deceleration commutation conical gear that is installed in the output shaft end, the final stage conical gear, the rotating of pulling axle, steering maneuver motor that is connected with connecting axle and carry frame and the road wheel that above-mentioned parts walk and form.The eccentric bushing of its dynamic retarding transmission device is connected with external gear through bearing, geared end has cross chute outside, be embedded with cross in the cross chute and pull axle, the block that axle pulled in cross is embedded in the cross chute of output shaft end, in the housing of speed reduction gearing, be installed with internal gear corresponding to external gear, exist tooth poor between internal gear and the external gear, eccentric bushing and power motor output shaft interference fit.The dynamic retarding transmission device of this structure relies on gear and the cross between the output shaft installed on the power motor output shaft to pull a transferring power; Rely on external gear that eccentric bushing drives and be fixed in internal gear on the housing and mesh and realize slowing down.But this dynamic retarding transmission device does not have torque control protective device; screw ride climb nut after, this dynamic retarding transmission device still work, easily twist into two parts " U " type bolt; therefore screw the working experience that nut must rely on operating personnel, have the shortcoming of inconvenient operation.

The purpose of this utility model is to overcome the deficiencies in the prior art, and provides a kind of torque control protective device that is provided with, the nut changer that operating personnel are easy to operate.

For achieving the above object, the utility model comprises power motor, the speed reduction gearing of transferring power motor power, the output shaft of outer sleeves, be installed in the deceleration commutation conical gear of output shaft end, the connecting axle of installing on the final stage conical gear, what be connected with connecting axle pulls axle, the two-direction switch of the rotating of steering maneuver motor and carry the frame and the road wheel of the walking of above-mentioned parts, one end of the main shaft of described dynamic retarding transmission device is equipped with planetary gear through the gear shaft symmetry, the other end has the herringbone helicla flute, main shaft is movably installed on the end cap of power motor, the output shaft of power motor stretches in the axis hole of main shaft, and be provided with gear endways, planetary gear respectively with the power motor output shaft on gear, the internal gear that is fixed in the power motor end cap is meshed; The place, axle center of movable sleeve has axis hole, and the one end is a cavity, and the other end is arranged with boss, driving groove and locating slot; Compression spring is set on the main shaft, between the shaft shoulder of compression spring bottom and main shaft, bearing is housed, movable sleeve cavity end is set on compression spring and the main shaft, the shoulder abutment of movable sleeve cavity is in the top of compression spring, between the locating slot of the herringbone helicla flute of main shaft and movable sleeve, ball is housed, the block that axle pulled in cross is embedded in the driving groove between two boss of movable sleeve, and its output is connected with described output shaft.

The utility model is because the main shaft one end symmetry of dynamic retarding transmission device is equipped with planetary gear; two planetary gears are meshed with the gear of power motor output shaft end and the internal gear that is loaded in the electric motor end cap respectively; compression spring is set on the main shaft; movable sleeve presses the ball that is equipped with between the locating slot of compression spring by the herringbone helicla flute of main shaft and movable sleeve and is installed on the main shaft; the driving groove that axle is embedded in movable sleeve pulled in cross; when output shaft rotation surpasses selected torque; movable sleeve overcomes compression spring pressure retraction; make main shaft idle running; thereby the parts that screwed are played a protective role, therefore easy to operate.

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

Fig. 1 is a front view of the present utility model;

Fig. 2 is the amplification view along A-A line among Fig. 1;

Fig. 3 is a herringbone spiral fluted expanded view on the utility model main shaft.

As shown in Figure 1, power motor 1, output shaft 2, the frame 8 that is placed on axle sleeve 3 on the output shaft, is installed on the connecting axle 5 installed on the deceleration commutation conical gear 4, final stage conical gear 4 of output shaft 2 ends, makes with the angle bar weldering with parts such as the two-direction switch 7 of the connecting axle 5 universal rotatings of pulling axle 6, steering maneuver motor 1 that are connected and carrying power motor 1, output shafts 2 and the road wheel 9 that is installed on frame 8 bottoms, same as the prior art, this does not give unnecessary details.

As shown in Figure 2, in power motor 1 end cap, internal gear 10 fixedly is housed with bearing pin, main shaft 11 1 ends that connect the dynamic retarding transfer device of power motor 1 output final stage are equipped with two planetary gears 12 through the gear shaft symmetry, the other end symmetry of main shaft 11 has herringbone helicla flute 13, and the structure of herringbone helicla flute 13 as shown in Figure 3.

In Fig. 2, main shaft 11 is movably installed on the end cap of power motor 1 through bearing, the output shaft end of power motor 1 is provided with gear 14, it stretches in the axis hole of main shaft 11, two planetary gears 12 respectively with power motor 1 output shaft on gear 14 and the internal gear 10 that is loaded on the electric motor end cap be meshed, the place, axle center of movable sleeve 15 has through hole, and the one end is a cavity 16, and other end symmetry respectively is shaped on boss 17, driving groove 18 and locating slot 19; Compression spring 20 is set on the main shaft 11, be the friction between the shaft shoulder that reduces compression spring 20 and main shaft 11, between the shaft shoulder of compression spring 20 bottoms and main shaft 11, rolling bearing 21 is housed, movable sleeve 15 cavity ends are set on compression spring 20 and the main shaft 11, the shoulder abutment of movable sleeve 15 cavitys is in the top of compression spring 20, under the effect of anchor clamps, movable sleeve 15 overcomes the pressure retraction of compression spring 20, ball 22 is embedded in the locating slot 19 of herringbone helicla flute 13 and movable sleeve 15 on the main shaft 11, thereby movable sleeve 15 activities are loaded on the main shaft 11; Cross is pulled in the driving groove 18 between the boss 17 that axle 23 block is loaded on movable sleeve 15, and its output is connected with output shaft 2.

During use, the box spanner of dismounting nut is loaded on pulls on the axle 6, the nut of required loading and unloading is inserted in the box spanner, handle two-direction switch 7, the rotating of control power motor 1 screws nut or unclamps.When nut screws, cross is pulled axle 23 rotations and is obstructed, force movable sleeve 15 to overcome the spring pressure of compression spring 15, make herringbone helicla flute 13 intrinsic displacements of ball 22 at main shaft 11, make movable sleeve 15 retractions, cross is pulled the block of axle 22 and is produced relatively and slide on boss 17, driving groove 18 surfaces of movable sleeve 15 ends, and no longer transferring power is avoided bolt is twisted into two parts.

Claims

1, a kind of nut changer, by power motor, the speed reduction gearing of transferring power motor power, the output shaft of outer sleeves, be installed in the deceleration commutation conical gear of output shaft end, the connecting axle of installing on the final stage conical gear, what be connected with connecting axle pulls axle, the two-direction switch of the rotating of steering maneuver motor and the frame and the road wheel that carry the walking of above-mentioned parts are formed, its feature will in: main shaft one end of described dynamic retarding transmission device is equipped with planetary gear through the gear shaft symmetry, the other end has the herringbone helicla flute, main shaft is movably installed on the end cap of power motor, the output shaft of power motor stretches in the axis hole of main shaft, and be provided with gear endways, planetary gear respectively with the power motor output shaft on gear, the internal gear that is fixed in the power motor end cap is meshed; The place, axle center of movable sleeve has axis hole, and the one end is a cavity, and the other end is arranged with boss, driving groove and locating slot; Compression spring is set on the main shaft, between the shaft shoulder of compression spring bottom and main shaft, bearing is housed, movable sleeve cavity end is set on compression spring and the main shaft, the shoulder abutment of movable sleeve cavity is in the top of compression spring, between the locating slot of the herringbone helicla flute of main shaft and movable sleeve, ball is housed, the block that axle pulled in cross is embedded in the driving groove between two boss of movable sleeve, and its output is connected with described output shaft.