Built-in insertion-type concrete vibrator for electric motor and its abnormal operation protection method
A motor and vibrator technology, applied in electromechanical devices, electric components, emergency protection circuit devices, etc., can solve the problems of high noise, energy consumption and labor intensity, affecting practical value, etc., to achieve high production efficiency, long life, obvious economic effect
Inactive Publication Date: 2010-05-19
SHANGHAI SERVO MOTOR CONTROL
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Problems solved by technology
These problems have affected its practical value, making most construction teams still choose the planetary roller cone inserting concrete vibrator with high noise, energy consumption and labor intensity.
Method used
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Embodiment Construction
[0019] refer to figure 1 , which is a schematic diagram of the structure of a plug-in concrete vibrator with a built-in motor.
[0020] As shown in the figure, the present invention includes a rubber hose 20, a cable 21, a vibrating rod 22, a controller 23 and a power cord (omitted in the figure). One end of the vibrating rod 22 is connected with a rubber hose 20 for hand-held operation. The connecting cable 21 passes through the rubber hose 20 for electrical connection between the controller 23 and the vibrating rod 22 .
[0021] refer to figure 2 , which is a schematic diagram of the structure of a vibrating rod with a plug-in concrete vibrator inside the motor.
[0022] As shown in the figure, the vibrating rod structure includes upper sleeve 1, O-ring 2, locking screw and spring washer 3, pressure plate 4, sealing ring 5, wave washer 6, bearing housing 7, small bearing 8, three-slot stator core and Winding 9, magnetic steel 10, small rubber ring 11, rotating shaft 12,...
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The invention relates to a motor-inserted concrete vibrator and its abnormal operation protecting method, where the built-in motor adopts rotor position sensor-free PM motor whose stator is of a three-slot structure, whose three windings are directly coiled on three teeth and whose rotor adopts segmented annular magnetic steel which is directly jacketed on rotating shaft and fixed with glue, wherean eccentric block is welded on the rotating shaft, supported by multiple parallel rollers and ball bearings; the motor is cooled with machine oil, and the cooling oil and bearing lubricant are merged into one; the stick body, upper sleeve and lower cone are interlinked through thread; the rotating direction of the thread cooperates with that of the motor, and as operating, the upper and lower threads are automatically tightened by force; the power of the built-in motor can be above twice higher than the limit power of the existing technique; and the vibrating stick has functions of abnormaloperation protection and abnormal use condition protection and has a service life above 4000 h and noises below 70db, saving energy, portable and having a weight of only several kg.
Description
technical field [0001] The invention relates to a plug-in concrete vibrator with a built-in motor and an abnormal operation protection method thereof, which are used in construction engineering and belong to the technical field of construction machinery. Background technique [0002] Concrete vibrator is one of the necessary tools for pouring concrete. Construction industries such as building houses, roads, bridges, and water conservancy projects cannot do without it, and it is widely used. [0003] At present, more than 90% of the concrete vibrators used in engineering are planetary roller cone-inserted concrete vibrators, which have been in use since the 1960s. [0004] The basic structure and principle of the planetary roller cone plug-in concrete vibrator is as follows: the ordinary asynchronous motor drives the roller cone to perform planetary rolling along the pipe wall in the casing through the flexible shaft. The roller cone rotates once and rolls along the pipe wa...
Claims
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IPC IPC(8): E04G21/08H02K7/075H02K11/00H02H7/08H02K1/27H02K11/25
Inventor 舒展
Owner SHANGHAI SERVO MOTOR CONTROL