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Pneumatic Impulse Tools with Shutoff Mechanism

A pulse and tool technology, applied in the direction of motor tools, manufacturing tools, portable motor devices, etc., can solve the problems of simple production and implementation, and achieve the effect of simple structure

Active Publication Date: 2019-04-05
ATLAS COPCO INDAL TECHN AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, there is a need for a more reliable shut-off mechanism than conventional spring-controlled shut-off structures, but which is relatively simple to produce and implement

Method used

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  • Pneumatic Impulse Tools with Shutoff Mechanism
  • Pneumatic Impulse Tools with Shutoff Mechanism
  • Pneumatic Impulse Tools with Shutoff Mechanism

Examples

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Embodiment Construction

[0022] exist figure 1 A pneumatic torque pulse transmission power tool 10 with an automatic power shutoff mechanism is shown in . The power tool 10 includes an air motor 11 driven by pressurized air. An air inlet portion 12 is arranged to be connected to a supply of pressurized air and an air outlet portion 13 is arranged to discharge air from the motor. An air supply passage 14 is provided for supplying pressurized air to the motor 11 , and the air supply passage 14 includes a shut-off valve 15 .

[0023] Furthermore, the power tool 10 includes a drive member 16 driven in rotation by means of the air motor 11 . The drive member is connected to the rotor 19 of the motor 11 via a hexagonal connection 20 . The drive member 16 intermittently drives an anvil 21 partially located in the drive member 16 and extending through the front of the drive member and integrally connected to an output shaft 22 . Additionally, the illustrated power tool 10 includes a handle 23 and a trigge...

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PUM

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Abstract

A pneumatic torque pulse transmission power tool (10) having an automatic power shut-off mechanism, the power tool (10) comprising: an air motor (11); a driving member (16), which is driven by the air motor (11) driven to rotate; an air supply passage (14) for supplying pressurized air to the motor (11); a shut-off valve (15) provided in the air supply passage; and a valve control device (17) for It is arranged to close the shut-off valve (15) and prevent the flow of air to the air motor (11) when the magnitude of the retardation experienced by the drive member (16) exceeds a certain threshold level. The valve control device (17) includes an inertial responsive member (18) arranged to rotate with the drive member (16) and pivotally arranged in an inertial response relative to the drive member (16). Between an initial position where the member does not interfere with the shut-off valve (15) and a shut-off position where the inertial responsive member allows the shut-off valve (15) to close. The valve control device (17) further comprises an air damped motion limiter (29) arranged to resist movement of the inertial responsive member (18) towards its off position, thereby causing the off The valve (15) only closes when the magnitude of the retardation experienced by the drive member (16) exceeds a certain threshold level corresponding to the damping force of the air damped motion limiter (29). A spring (35) may be provided in an air damped motion limiter (29).

Description

technical field [0001] The present invention relates to a pneumatic torque pulse tool for tightening threaded joints which includes an automatic power shut-off device. In particular, the present invention relates to a torque pulse tool comprising a housing, a hydraulic pulse generator, an air motor with a rotor drivingly coupled to the pulse generator, wherein the shut-off means comprises an air inlet valve and a damper-response actuator, the air inlet valve being associated with the motor and adjustable between an open state and a closed state, said damper-response actuator being co-rotatable with the rotor and comprising an inertial actuator and a connecting member, The connecting member couples the inlet valve to an actuating device for switching the inlet valve from an open state to a closed state by actuation of the actuating device when a predetermined maximum damping amplitude level is reached. Background technique [0002] A torque-transmitting impulse power tool in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B21/02B25B23/145
CPCB25B21/02B25B23/1453B25F5/005B25B23/145
Inventor P·T·索德朗F·N·维达尔莱尔歇
Owner ATLAS COPCO INDAL TECHN AB
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