Twin-screw extruder gear case
A technology for twin-screw extruders and gearboxes, which is applied to belts/chains/gears, mechanical equipment, transmission parts, etc. It can solve the problems of reduced service life, axial movement of short output shafts, etc., to prolong life, Solve the effect of axial movement
Active Publication Date: 2012-12-26
南京金格尔齿轮箱有限公司
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Problems solved by technology
The service life of the tandem thrust bearing is reduced due to lack of preload, and the reduction gear box of the twin-screw extruder often has the phenomenon of axial movement of the short output shaft
Method used
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[0017] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.
[0018] Such as Figure 1 to Figure 3 As shown, the components included in the embodiment of the present invention are: long output shaft 1, gear box 2, short output shaft 3, transmission gear shaft 4, tandem thrust bearing 5, dressing washer 6, spring retainer 7, and fixing screw 8 , Compression spring 9, correction ring 10, plane thrust bearing 11, support bearing 12.
[0019] The long output shaft 1 transmits the torque to the transmission gear shaft 4 through a pair of gears (at the left end of the long output shaft 1), and the transmission gear shaft 4 transmits the torque to the short output shaft 3 through the gears on the shaft, and the transmission of the two pairs of gears The ratio is reciprocal, so that the long output shaft 1 and the short output shaft 3 rotate in the same direction and at the same speed.
[0020] Both ends of the...
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The invention discloses a twin-screw extruder gear case. The twin-screw extruder gear case prolongs service life of a tandem thrust bearing and prevents a short output shaft from axial float. A tandem thrust bearing preloading device is arranged on the other end of the short output gear shaft provided with the tandem thrust bearing, and comprises a spring clamping ring, a fixed screw of the spring clamping ring, compression springs, a revising ring, a plane thrust bearing transmitting preloading force and inner rings of double-line cylindrical roller bearings. The preloading force of the tandem thrust bearing preloading device is generated by a plurality of the springs fixed on a small hole of a case body by the spring clamping ring being compressed. Spring force is transmitted from the revising ring, the plane thrust bearing, the inner ring of a supporting bearing (12), a left step and a right step of the short output shaft, the tandem thrust bearing to a finishing gasket and finally acts on the gear case body on the left end, while the spring force is transmitted from the spring clamping ring to the screw on the spring clamping ring, and finally acts on the gear case body on the right end.
Description
technical field [0001] The invention relates to a gear box for a twin-screw extruder, in particular to a reduction gear box for a twin-screw extruder with a pre-tensioning device. Through the axial pre-tensioning device, the device ensures the stability of the tandem thrust bearing The use improves the reliability of the gearbox. Background technique [0002] Twin-screw extruder reduction gearbox mainly realizes two functions of deceleration and power distribution. It not only reduces the motor speed to the required speed of the extruder screw, but also distributes the power of the input shaft to the two output shafts equally. [0003] The twin-screw extruder propels the material through the rotation of the screw sleeve in the screw barrel. The screw sleeve is installed on the long screw through the inner and outer splines, and the long screw is rigidly connected with the two output shafts of the gearbox through the spline sleeve. The screw sleeve bears a large reverse thru...
Claims
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IPC IPC(8): F16H57/023F16H57/021B29C47/08
Inventor 周永良汤本金王淑娟薛焦
Owner 南京金格尔齿轮箱有限公司