Torque amplifier for jumbolter

Abstract

The invention relates to a torque amplifier, particularly to a torque amplifier for the jumbolter, and solves the problem that when an anchor rod nut of the conventional jumbolter is installed, the pre-tightening force cannot meet the requirement and influences the supporting effect. The torque amplifier includes a stepped sleeve with the diameter on the right side smaller than the diameter on the left side, wherein a transmission gear ring is arranged on the inner wall on the left side of the sleeve; an input shaft is arranged on the left side of the sleeve; a driving gear positioned in the sleeve is fixed on the input shaft; a plurality of planetary gears meshed with the driving gear and the transmission gear ring are arranged between the driving gear and the transmission gear ring; shaft pins penetrate the shaft centers of the planetary gears; and an output shaft is fixed at the shaft center on the right side of the sleeve. The torque amplifier for the jumbolter has a reasonable and reliable structural design, meets the requirement for pre-tightening force and improves the efficiency for two to three times as the torque of the jumbolter is greatly amplified, is particularly suitable for work places with smaller space, and has the advantages of light weight, simplicity in operation, as well as convenience for use and maintenance, thereby effectively reducing the labor intensity of employees and improving the labor efficiency.

Description

technical field

[0001] The invention relates to a torque amplifier, in particular to a bolter torque amplifier. Background technique

[0002] In coal mine bolting operations, due to the small torque of the bolting rig, when using the bolting rig to install the bolt nut, the pre-tightening force of the bolting rig often cannot meet the safety design requirements for roof anchor net support, which affects the support effect. Cause safety hazards on coal mines. Contents of the invention

[0003] The invention provides a bolter torque amplifier in order to solve the problem that the pretightening force cannot meet the requirements and affect the supporting effect when the anchor nut is installed in the existing rocker rig.

[0004] The present invention is realized by adopting the following technical scheme: the torque amplifier of the rock bolter includes a stepped casing whose diameter on the right side is smaller than that on the left side, the inner wall on the left side ...

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