CN2188457Y - Centrifugal adjustable energy-storing electric wrench - Google Patents

Abstract

The utility model provides a centrifugal torque adjustable energy storing electric wrench. The utility model is provided with a fly hammer body-centrifugal type mechanical speed controlling mechanism and a torque controlled mechanism. The torque is controlled through controlling rotation speed. An impulse pin is elastically pushed by an elastic pressing device and a shifting fork rod, and a wrench shaft and a sleeve barrel are driven to achieve the purpose of loading and unloading screw thread connection bodies of various specifications. The utility model has the advantages of compact structure, electricity saving, high safety and reliability, easy fabrication, low cost, small volume, large torque, strong adjustability, large practical range and easy repair and use. The utility model reaching the purpose of one machine with multiple functions is suitable for loading and unloading screw thread connection bodies of various specifications. The utility model can also be used as tools with automobiles for automobiles.

Description

Centrifugal adjustable energy-storing electric wrench

The utility model belongs to a kind of energy storage electroplax hand of centrifugal adjustable moment of torsion.Be particularly suitable for the automobile driver's tool.

The patent No. is 92223527 and is called " impact electric plate shearing machine ".A kind of electric plate shearing machine is disclosed, it is by the percussion operating system that is contained in the back handle, motor, the percussion pull bar is connected with impulse pin in the fling rammer that is embedded in an other end by motor major axis centre bore, impact spring is housed behind the impulse pin, also have the plate axle, and be contained in the compositions such as power switch on the mid-handle.Though this electric plate shearing machine energy energy storage, acquisition is than high pulling torque, but operation requires to be contained in respectively two power switch and percussion switches on the handle must be with opening with putting, this just is difficult to accurately carry out synchronously, brings inconvenience to operation, also has when power voltage insufficient, motor can't reach rated speed and manually pull the trigger, or the electric motor starting time too shortly do not reach rated speed and pull the trigger yet, the nominal torque that causes not reaching design is all arranged, promptly whether to reach design load uncontrollable for moment of torsion.The moment of torsion of this electric plate shearing machine is nonadjustable single moment of torsion simultaneously.

The patent No. is: 912330937 are called " adjustable torque energy storage type electroplax hand ", its adopts fling rammer, impulse pin, spring and electromagnet, collector ring and the electroplax hand of the adjustable square that electronic devices and components such as the linear f-U converter be made up of N-S utmost point magnet ring, Hall element, dual power supply four computing integrated circuits and switch relay are formed, because of complex structure, the cost height, components and parts are subject to damaged evil idea and big because of power consumptions such as solenoid are set, the electronic component complexity causes maintenance difficult.

The utility model is the deficiency at above-mentioned two kinds of electroplax hands, and a kind of energy storage electroplax hand of novel, easy centrifugal adjustable moment of torsion is provided.It is driving with the motor, fling rammer-centrifugal mechanical control speed system is energy storage, control velocity modulation square, have compact conformation, make easyly, cost is low, power saving, volume is little and moment of torsion is big, and adjustable, usage range is wide, uses advantages such as easy to maintenance, is applicable to manufacturing, the various scales of the loading and unloading body that is threaded in the industries such as repair especially can be with car field work.

In order to solve above-mentioned task, the utility model is realized as follows, its structure is to adopt the fast mechanism 6 of fling rammer-centrifugal control and establish control torque mechanism 14 to constitute, its operation principle of this electroplax hand is: be power source with the motor, drive fling rammer-centrifugal mechanical control speed mechanism 6 and establish control torque mechanism 14, energy storage is carried out in rotation at a high speed, when rotating speed reaches the required rotating speed of a certain operation torque, spin 10 in the fast mechanism of centrifugal control is fallen out a certain distance under action of centrifugal force, promote to move behind the regulator board 12, thereby device 11, shift fork pull bar 8 are suppressed in pulling, 9, bullet pushes away impulse pin 7, thereby connecting plate axle 1 by bump, reaches plate axle 1 with the kinetic energy of fling rammer-centrifugal control speed mechanism 6 through impulse pin 7, reach sleeve and be converted into moment, impact and to tighten or the purpose of unscrewing screw connector.

Thereby the utility model compared with prior art, have the following advantages: 1, adopt centrifugal mechanical control speed (promptly transferring operation torque) mechanism, have simple and compact for structure, make easy to maintenance, the low and adjustable torque mechanism scope of cost big (98 Newton force-882 Newton force).2, adopt and to establish the control torque mechanism, reach control torque by the control rotating speed, when only reaching required operation torque setting value, the skewer pin is just worked, and moment of torsion is accurate like this, the automaticity height.3, adopt the series excitation type motor speed can reach 4,000-7,000 rev/mins, use power supply direct current 12V, 24V or 220V ac-dc dual power supply, power is little, only reaches 100W-200W, except that the electricity consumption of motor own, does not have other power consumer apparatus, has power saving, and safety is reliable.4, from complete machine, simple in structure, compactness, power saving, easy to manufacture, cost is low, and volume is little and moment of torsion is big, and adjustability is strong, and usage range is big, uses easy to maintenancely, is suitable for the body that is threaded of loading and unloading all size, reaches the purpose of a tractor serves several purposes.

1 couple of embodiment of the present utility model is further described below in conjunction with accompanying drawing:

Accompanying drawing 1 is a structural representation of the present utility model.

Among the figure 1, plate axle 2, little ball 3, axle sleeve 4, casing 5, bolt 6, fling rammer-centrifugal control speed mechanism 7, impulse pin 8, shift fork 9, pull bar 10, spin 11, suppress device 12, regulator board 13, regulating spring 14, establish control torque mechanism 15, fan blade 16, forward-reverse switch 17, motor.

As shown in Figure 1, establishing the control torque mechanism is by the center of adjusting rod 14 sky to be housed to be enclosed within bearing on the axle, regulating spring 13 coaxial rotations.Fling rammer-centrifugal control speed mechanical mechanism 6 is by a pair of impulse pin 7, fork 8, and pull bar 9 is installed in the fling rammer symmetric position, can make axially movable regulator board 12 and suppress device 11 and be contained in fling rammer 6 inclined-planes, and the balls 10 in the regulator board 12 constitute.At first, according to target, the adjusting rod that control torque mechanism 14 is established in speed governing reaches and selects this setting value of required operation torque for use.Skewer people power supply, mix up direction of rotation, connect switch 16, electric current is through the coil of motor stator, flow into rotor by brush, under the effect of electromagnetic force, rotor drives fan blade 15, and fast mechanism 6 is controlled in fling rammer-centrifugal mechanism, and a pair of impulse pin 7 that fuses with it, shift fork pull bar 8,9, four spin 10 and can make axially to claim moving regulator board 12 are suppressed device 10, spring 11, begin coaxial rotation and acceleration, when reaching the required rotating speed of a certain operation torque that mixes up, that is to say that centrifugal force that this rotating speed produces is enough to make centrifugal mechanism to control four spin 10 in the fast mechanism 6 and falls and then move to stretchy to the elastic force that is enough to make regulator board 12, overcomes mix up spring 13 and suppress device 11, stir pull bar 8,9, bullet pushes away the 6-8mm place that impulse pin 7 enters plate axle 1.By bump, the kinetic energy of fling rammer-centrifugal mechanical control speed mechanism 6 is passed to plate axle 1 and sleeve is converted into moment through impulse pin 7, impact the fastening nut or the body that is threaded.After the impact, the fast mechanism 6 of fling rammer-centrifugal control, the rotating speed of regulator board 12 and rotor sharply descends and is tending towards 0.At this moment, inclined-plane at fling rammer 6 pushes with the spring pressure that acts on regulator board 12 is crowded spin 10 in the centrifugal mechanical control speed mechanism 6 losing centrifugal force, the home position of rebounding, simultaneously, suppress plate 12 under the elastic force effect of spring 13, also retract original position forward, thereby drive is suppressed device 11 by shift fork pull bar 8,9, draw-in impulse pin 7 resets, plate axle 1 is separated with fling rammer 6, stretch axle behind the abutment plate axle and connect, continue to impact the threaded together connector as need with the maintenance of flyball body opening is moving, power supply continues to send, rotor begins again to quicken rotation, carries out the working cycles second time, in the time of need unscrewing connector, then the conversion forward-reverse switch 16, make motor counter-rotating, with the same program connector that unscrews.The adjusting rod that control torque mechanism 14 is established in adjustment obtains different torque setting values, promptly realized under different rotating speeds, fling rammer-the kinetic energy of centrifugal mechanical control speed mechanism 6 is driven plate axle 1 through impulse pin 7 and discharges different moments of torsion, reach purpose with the body that is threaded of loading and unloading different scales.

Claims (3)

1, a kind of by motor 17, forward-reverse switch 12, plate axle 1, the energy storage electroplax hand of the centrifugal adjustable moment of torsion that casing 4 constitutes is characterized in that, it is by fling rammer-centrifugal mechanism 6 and establish that control torque mechanism 14 constitutes.

2, centrifugal adjustable moment of torsion energy storage electroplax hand according to claim 1, its feature is by a pair of impulse pin 7 in fling rammer one centrifugal mechanical control speed mechanism 6, shift fork 8, pull bar 9 is installed in the fling rammer symmetric position, can make axially movable regulator board 12 and suppress device 11 and be contained in fling rammer 6 inclined-planes, the balls 10 in the regulator board 12 constitute.

3, centrifugal adjustable moment of torsion energy storage electroplax hand according to claim 1 is characterized in that establishing the control torque mechanism and is and by adjusting rod 14 centers sky is housed and is enclosed within bearing on the axle, regulating spring 13 coaxial rotations.

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