A shield machine main drive reducer overload protector and shield machine
An overload protector and reducer technology, applied in the direction of automatic clutch, clutch, mechanical equipment, etc., can solve the problems of the overload protection mechanism of the reducer being unavailable, the main drive of the shield machine, etc., to achieve small occupied space, accurate fracture position, The effect of avoiding damage
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Embodiment 2
[0043] Embodiment 2: The safety bolt 4 is sleeved with a spring 7, and the spring 7 is arranged between the torque shaft 5 and the end cover 3, and both ends of the spring 7 are in contact with the torque shaft 5 and the end cover 3, so that After the torque shaft 5 is disconnected from the end cover 3 , the torque shaft 5 is bounced toward the motor side to avoid damage caused by friction with the end cover 3 . Specifically, the torque shaft 5 and the end cover 3 are respectively provided with spring grooves for accommodating the spring 7, wherein the torque shaft 5 is provided with a torque shaft spring groove 51, the end cover 3 is provided with an end cover spring groove, and the two ends of the spring 7 are respectively It abuts against the ends of the two torque slots that are far away from each other. Moreover, the spring 7 is compressed when it is fitted on the safety bolt 4 and inserted between the two spring grooves, so that it has a preloading force for springing th...
Embodiment 3
[0044] Embodiment 3: The safety bolt 4 is provided with a fracture reminder structure for reminding when the safety bolt 4 is overloaded and the safety bolt 4 is broken.
[0045] Further, the breakage reminder structure includes a cavity 42 axially disposed on the safety bolt 4, the cavity 42 is disposed on the side of the safety bolt 4 close to the end cover 3, the outer end of the cavity 42 is open, and passes through the safety bolt 4. The plug 9 with a transparent material is closed, so that the inside of the cavity can be seen through the transparent material. The cavity 42 is provided with colored liquid, which may be a bright colored liquid such as yellow or red. The length of the cavity 42 extending in the safety bolt 4 is greater than the length of the prestressed groove 41 from the outer end of the safety bolt 4 , that is, the length of the cavity spans the position where the safety bolt 4 is provided with the prestressed groove 41 , so that the safety bolt 4 After ...
Embodiment 4
[0046] Example 4: The end of the torque shaft 5 close to the protector housing passes through the motor shaft 1, and a bearing 6 is arranged between the torque shaft 5 and the sleeve 2, and the bearing 6 and the sleeve 2 are in clearance fit, and the bearing 6 Interference fit with sleeve 2. Specifically, an annular groove is provided at one end of the sleeve 2 close to the end cover 3, so that there is an annular space between the end of the sleeve 2 and the torque shaft 5, a bearing 6 is arranged in the annular groove, and the bearing is sleeved on the torque shaft 5. On the shaft 5, but there is a certain clearance between the bearing and the torque shaft 5 so that the torque shaft has a space to be separated from the end cover 3; To the effect of the axial positioning of the bearing 6. In addition, after disengagement, the bearing between the torque shaft 5 and the sleeve 2 can rotate relative to each other, and the radial displacement of the torque shaft can be avoided, ...
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