2. New lifting platform balancing mechanism
As shown in Fig. 2, the large timing pulley is mounted on the ball screw 12, and the balancing device is mounted on the upper end of the motor shaft, and is connected by the small timing pulley 1. The stepping motor transmits the motion to the ball screw 12 through the timing pulleys 1, 11 to drive the screw to rotate, and the lifting platform rises or falls. The balancing device is still composed of an overrunning clutch and a self-locking device. The self-locking device is composed of 6 pieces of steel ball 6, compression spring 9, and flat end set screw 8. The working principle is that the small pulley 1 rotates to drive the shaft 2 to rotate. When the lifting platform rises, the star wheel 5 turns to disengage the roller 10 from the outer ring 4 of the overrunning clutch. The outer ring 4 does not rotate with the star wheel 5, and the self-locking device does not function. When the lifting platform descends, the star wheel 5 turns to make the roller 10 wedge between the star wheel 5 and the outer ring 4, so that the outer ring rotates together with the shaft, and the outer ring forms a relative movement with the friction ring 3 fixed at both ends, resulting in a relative motion. Friction, self-locking. Rotating the set screw 8 changes the amount of friction.
figure 2
1, 11. pulley 4. shaft 3. friction ring 4. outer ring 5. star wheel 6. steel ball 7. gland 8. set screw 9. compression spring 10. roller 12. ball screw 13. lifting station
3. Conclusion
The power and locking mechanism are combined into one, and two vertical holes are eliminated, which is easy to process. 02毫米。 The timing of the pulley is directly mounted on the vertical lead screw, the drive chain is shortened, the gear transmission error is eliminated, the accuracy is improved by 0. 02mm. The shaft II in Figure 1 and its on-axis bevel gear 4, bushing, retaining ring, washer, bearing, bearing housing, round nut and other parts are eliminated, saving 50%. The compression spring is pressed with six set screws, which is convenient and reliable.
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Decoiler Machine,Coil Decoiler,Steel Coil Decoiler,Coiler Decoiler
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