A kind of feed angle adjusting device of three-roller type skew rolling mill
Technical field
The present invention relates to a kind of hot rolled seamless steel tube milling equipment, particularly a kind of feed angle adjusting device of three-roller type skew rolling mill.
Background technology
The feed angle adjustment of existing three-roll-type skew rolling mill of open-type stand is to adopt three rolls are adjusted separately respectively, by 3 the cover separately independently the leading screw guiding mechanism respectively the roll that is installed in the frame is adjusted, the adjustment that there is the feed angle that can not make three rolls in this structure is synchronously with the carrying out of precision, make the rolling accuracy of hollow forging low, the technical problem of waste product often occurs.
Summary of the invention
The invention provides a kind of feed angle adjusting device of three-roller type skew rolling mill, the adjustment that has solved the feed angle of three rolls that prior art exists can not make the rolling accuracy of hollow forging hang down the technical problem that waste product often occurs synchronously with the carrying out of precision
The present invention overcomes the above problems by following scheme:
A kind of feed angle adjusting device of three-roller type skew rolling mill, comprise upper spider, last drum device, topping roll case and topping roll assembly, on upper spider, be set with the double output shaft drive motors respectively, the first worm gear lift, the second worm gear lift and the 3rd worm gear lift, one output shaft of double output shaft drive motors links together by first shaft coupling and drive link and first commutator and second shaft coupling and drive link, one end of the power shaft of second shaft coupling and drive link and the first worm gear lift links together, the other end of the power shaft of the first worm gear lift links together by the power shaft of the 3rd shaft coupling and the drive link and the second worm gear lift, another output shaft of double output shaft drive motors links together by second commutator and tetrad axial organ and drive link, and the power shaft of tetrad axial organ and drive link and the 3rd worm gear lift links together; One end of the output shaft of the first worm gear lift and first fork links together, the other end of first fork links together with an end that fixes on the first connecting rod on the upper spider by first hinges fixing, the other end of first connecting rod and last drum device are fixed together, one end of the output shaft of the second worm gear lift and second fork links together, the other end of second fork links together with an end that fixes on the second connecting rod on the upper spider by second hinges fixing, the other end of second connecting rod and lower-left drum device are fixed together, one end of the output shaft of the 3rd worm gear lift and the 3rd fork links together, the other end of the 3rd fork links together with an end that fixes on the third connecting rod on the upper spider by the 3rd hinges fixing, and the other end of third connecting rod and bottom right drum device are fixed together.
Described first commutator is provided with position sensor, and second commutator is provided with the mechanical limit position protective device.
The present invention has realized the concentrated synchronously adjustment of three-roller type skew rolling mill feed angle, has improved the rolling quality of hollow forging.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Fig. 2 is that A-A among Fig. 1 is to cutaway view
Fig. 3 is that B-B among Fig. 1 is to cutaway view
Fig. 4 is that C-C among Fig. 1 is to cutaway view
Specific embodiment:
A kind of feed angle adjusting device of three-roller type skew rolling mill, comprise upper spider 1, last drum device 2, topping roll case 3 and topping roll assembly 4, on upper spider 1, be set with double output shaft drive motors 6 respectively, the first worm gear lift 9, the second worm gear lift 11 and the 3rd worm gear lift 14, one output shaft of double output shaft drive motors 6 links together by first shaft coupling and drive link 5 and first commutator 7 and second shaft coupling and drive link 8, one end of the power shaft of second shaft coupling and drive link 8 and the first worm gear lift 9 links together, the other end of the power shaft of the first worm gear lift 9 links together by the power shaft of the 3rd shaft coupling and the drive link 23 and the second worm gear lift 11, another output shaft of double output shaft drive motors 6 links together by second commutator 12 and tetrad axial organ and drive link 13, and the power shaft of tetrad axial organ and drive link 13 and the 3rd worm gear lift 14 links together; One end of the output shaft of the first worm gear lift 9 and first fork 23 links together, the other end of first fork 23 links together with an end that is fixed on the first connecting rod 1 on the upper spider 1 by first hinge 18, the other end of first connecting rod 1 and last drum device 2 are fixed together, one end of the output shaft of the second worm gear lift 11 and second fork 19 links together, the other end of second fork 19 links together with an end that is fixed on the second connecting rod on the upper spider 1 by second hinge 20, the other end of second connecting rod and lower-left drum device are fixed together, one end of the output shaft of the 3rd worm gear lift 14 and the 3rd fork 21 links together, the other end of the 3rd fork 21 links together with an end that is fixed on the third connecting rod on the upper spider 1 by the 3rd hinge 22, and the other end of third connecting rod and bottom right drum device are fixed together.
Described first commutator 7 is provided with position sensor 15, the second commutators 12 and is provided with mechanical limit position protective device 16.