Patent Document

FIELD 
       [0001]    The present disclosure relates to a device for testing a tilt angle of a machine cabinet. 
       BACKGROUND 
       [0002]    A cabinet usually accepts a plurality of computers or control equipments. In order to be aware of safety limits in a process of transporting or carrying, a certain tilt angle of the cabinet needs to be tested in manufacture, to see whether the cabinet meets a standard. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0003]    Many aspects of the present disclosure can be better understood with reference to the following drawing(s). The components in the drawing(s) are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawing(s), like reference numerals designate corresponding parts throughout the several views. 
           [0004]      FIG. 1  is a block diagram of an embodiment of a device connected to a machine cabinet. 
           [0005]      FIG. 2  illustrates an embodiment of a driver of the device of  FIG. 1 . 
       
    
    
     DETAILED DESCRIPTION 
       [0006]    The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean “at least one.” The references “a plurality of” and “a number of” mean “at least two.” 
         [0007]      FIG. 1  is a block diagram of an embodiment of a device  10  applied to a machine cabinet  100  to be tested. The device  10  can include an angle tester  11 , a controller  12 , and a driver  13 . The machine cabinet  100  is carried on the driver  13 . The device  10  can be used to test a tilt angle of the machine cabinet  100 . 
         [0008]    The angle tester  11  can include a sensor  14  and a dial  15  connected to the sensor  14 . The sensor  14  can be connected to the machine cabinet  100 , and used to sense the tilt angle of the machine cabinet  100 . The dial  15  can include a preset pointer  150  and a test pointer  151 . The preset pointer  150  can be pointed to a preset angle during testing. The test pointer  151  can point to an actual angle of tilt angle of the machine cabinet  100 . 
         [0009]    The controller  12  can include a processor  16  and a plurality of components connected to the processor  16 , such as a preset angle module  17 , a tilt angle display  18 , a test button  19 , a reset button  20 , a first switch  21 , and a second switch  22 . The preset angle module  17  can include a keyboard  170 , a preset angle display  171 , and a storage  172 . A value of the preset angle of the machine cabinet  100  can be preset through the keyboard  170 , stored in the storage  172 , and shown on the preset angle display  171 . In the embodiment, the first and second switches  21  and  22  are n-channel metal oxide semiconductor field-effect transistors (NMOSFETs). 
         [0010]      FIG. 2  illustrates an embodiment of the driver  13 . The driver  13  can include a motor  130 , a crown block  131 , a lifter  132 , and a lifting chain  135 . The motor  130  can include a main body  1301  fixed on a base board  134  and connected to the processor  16  through a power cable  133 , a transmission wheel  1303 , and a shaft  1302  connecting the main body  1301  and the transmission wheel  1303 . The lifter  132  can include a mast  1321  fixed on the base board  134  and a bracket  1322  adjacent to the bottom of the mast  1321 . The crown block  131  is on the top of the mast  1321 . A first end of the lifting chain  135  is fixed to the transmission wheel  1303 . A second end of the lifting chain  135  is fixed on the bracket  1322  through the crown block  131 . When the main body  1301  of the motor  130  receives a signal to rotate positively, both of the shaft  1302  and the transmission wheel  1303  rotate in a clockwise direction. The rotation of the transmission wheel  1303  causes the lifting chain  135  to roll, which causes the bracket  1322  to move up. When the main body  1301  of the motor  130  receives a signal to rotate in reverse, both of the shaft  1302  and the transmission wheel  1303  rotate in an anticlockwise direction. The bracket  1322  is dragged to move down through the transmission wheel  1303  so releasing the tension in lifting chain  135 . The main body  1301  receives a test order or a reset order from the processor  16  through the power cable  133 . 
         [0011]    The power cable  133  includes a live line and a neutral line  332 . The live line is composed of a first winding  330  and a second winding  331 . A gate of the first switch  21  is connected to the processor  16 . A drain of the first switch  21  is connected to the first winding  330  of the live line. A source of the first switch  21  is connected to the neutral line  332 . A gate of the second switch  22  is connected to the processor  16 . A drain of the second switch  22  is connected to the second winding  331  of the live line. A source of the second switch  22  is connected to the neutral line  332 . 
         [0012]    During testing, a first end of a bottom of the machine cabinet  100  is placed on a distal end portion of the bracket  1322  of the driver  13 , the driver  13  being on a flat and level surface, such as a floor. A second end of the bottom of the machine cabinet  100  is placed on a flat and level surface. When the test button of the controller  12  is pressed, the processor  16  receives a test order from the test button  19 , and outputs a digital logic-high signal to the first switch  21 . The first switch  21  is turned on. The neutral line  332  of the power cable  133  is connected to the first winding  330 . The transmission wheel  1303  and the crown block  131  rotate in the clockwise direction to make the bracket  135  move up through the transmission wheel  1303  to advance the lifting chain  135 . The first end of the bottom of the machine cabinet  100  is lifted up. The tilt angle is the angle between the bottom of the machine cabinet  100  and the flat and level surface tilt angle. 
         [0013]    The processor  16  receives the tilt angle of the machine cabinet  100  sensed by the sensor  14  of the angle tester  11 . The test pointer  151  points to the tilt angle indicated by the sensor  14 . The tilt angle display  18  shows a current tilt angle of the machine cabinet  100 . The processor  16  compares the tilt angle of the machine cabinet  100  with the preset angle. If the tilt angle is not equal to the preset angle, the processor  16  controls the driver  13  to continue rotating along the clockwise direction. The first end of the bottom of the machine cabinet  100  is lifted up by the crown block  131  and the transmission wheel  1303 , until the test pointer  151  matches the preset pointer  150 , i.e., the tilt angle equals the preset angle. When the tilt angle equals the preset angle, the processor  16  outputs a logic-low signal to the first switch  21 . The first switch  21  is turned off The neutral line  332  of the power cable  133  is disconnected from the first winding  330 . The motor  130  stops operation. The value of the tilt angle of machine cabinet  100  is displayed on the tilt angle display  18 . If the machine cabinet  100  does not topple at this time, the machine cabinet  100  meets the standard. 
         [0014]    When the reset button  20  of the controller is pressed, the processor  16  outputs a logic-high signal to the second switch  22 , according to a reset signal from the reset button  20 . The second switch  22  is turned on. The neutral line  332  of the power cable  133  is connected to the second winding  331 . The transmission wheel  1303  rotates in the anticlockwise direction. The bracket  1322  is dragged to move down through the transmission wheel  1303  to release the tension in lifting chain  135 . 
         [0015]    Thus, the tilt angle of the machine cabinet  100  is tested. 
         [0016]    While the disclosure has been described by way of example and in terms of preferred embodiment, it is to be understood that the disclosure is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements as would be apparent to those skilled in the art. Therefore, the range of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.

Technology Category: g