CN201394570Y

CN201394570Y - Short stress path rolling mill

Info

Publication number: CN201394570Y
Application number: CN2009201270784U
Authority: CN
Inventors: 熊光仪
Original assignee: Individual
Current assignee: CHONGQING HENGERTONG METALLURGY NEW TECHNOLOGY Co Ltd
Priority date: 2009-04-21
Filing date: 2009-04-21
Publication date: 2010-02-03
Anticipated expiration: 2019-04-21

Abstract

The utility model discloses a short stress path rolling mill which comprises a base, and two tension columns, tension column nuts, rolls, roll nuts, a roll shaft and a guide mechanism which are installed on the base, wherein the base is provided with two vertical arms, the upper portions and the lower portions of the vertical arms are respectively fixed with upper support arms and lower support arms through pins, the other ends of the upper support arms and the lower support arms are threaded on the tension columns through long circular holes, and are connected with the tension columns throughthe tension column nuts, the rolls are respectively installed on the upper support arm and the lower support arm through the roll nut and the roll shaft, and the axial gap of the roll is adjustable.The rolling mill changes the synchronous regulation on the left side and the right side of four tension column roll gaps of a Swedish short stress path machine into the single-side regulation of two tension column gaps, has the same short stress path, greatly simplifies the structure, and reduces the production cost of the mill.

Description

A kind of short-stress path rolling mill

Technical field

The utility model relates to steel rolling equipment.

Background technology

For rolling mill, traditional have memorial archway formula and a Sweden's formula, memorial archway formula milling train stress line length, poor rigidity, and Sweden's formula short stress path rolling mill good rigidly, stable performance, it generally needs four tension force posts and four tension force post nuts, two cover roller gap adjusting devices, structure and complex operation, device fabrication cost height, restricted application.

Summary of the invention

The utility model proposes a kind of simple and reasonable short-stress path rolling mill at the deficiency that prior art exists.

The technical solution of the utility model is as follows:

This short-stress path rolling mill comprises support, is installed in two tension force posts, tension force post nut, roll, roll nut, roll mandrel and guide and guard mechanism on the support.It is characterized in that on described pedestal, being equipped with two upright arms, upper and lower at described upright arm is fixed with lower branch arm respectively with pin, the other end of last lower branch arm is through on the tension force post by slotted hole, connect with the tension force post by tension force post nut, described roll is installed in respectively on the lower branch arm by roll nut and roll mandrel, and end play is adjustable.The tension force post all has screw thread in two ends up and down, and rotation direction is opposite, when the rotating tension post, tension force post nut maintains static, because tension force post two ends are positive left-hand thread, therefore can be driven by tension force post nut up and down and go up lower branch arm and do opening and closing movement, thereby the gap that is installed in the roll shop building on the lower branch arm is changed, the rotation adjustment of tension force post both can be manual also electronic.

On the described roll mandrel screw thread is arranged, the roll nut is assemblied on the roll mandrel, is positioned at the roll both sides, can regulate the axial location of roll on roll mandrel by turn roll nut.

Be provided with pressure ring between the roll nut of described roll and both sides, purpose be balanced nut act on the roll normal pressure with the protection roll.

The described lower branch arm of going up is provided with tension spring between the opposite face that connects the tension force styletable, last lower branch arm is carried out pre-tensioning.

Four tension force post roll gap the right and lefts that this rolling mill becomes the short stress machine of Sweden's formula are adjusted into the monolateral adjustment of two tension force post roll gap simultaneously, adopt to go up promptly between the lower branch arm relatively that centre-to-centre spacing one end immobilizes and the other end can be regulated by tension force post and tension force post nut, so that need adjust gap between top and bottom rolls according to rolling mill practice, the line of tension that has same weak point like this, but simplify rolling mill structure greatly, reduced the device fabrication cost.

This kind rolling mill both can be used for producing common cold rolled reinforcing steel bar with ribs, also can be used for the cold rolled reinforcing steel bar with ribs that manufacturing machine performance and mechanical property meet grade III steel muscle and level Four reinforcing bar, also can be used for common hot rolling or cold rolling round steel production, this kind rolling mill both can be installed in active steel rolling production-line, also can be installed in the passive type steel rolling production-line.

Description of drawings

Fig. 1 is the structural representation of this milling train;

Fig. 2 is the A-A cutaway view of Fig. 1.

The specific embodiment

Describe the structure and the working method of this milling train in detail below in conjunction with accompanying drawing:

Referring to Fig. 1 and Fig. 2, this short-stress path rolling mill mainly consists of the following components: the upright arm of support 11, two 1, two pairs are gone up the secondary roll of lower branch arm 2, one 3, the two pairs of pressure rings 4, two width of cloth roll nuts 5, two roll mandrels 6, two tension force post 7, two secondary tension force post nuts 8, guide and guard mechanism 9.

Wherein, upright arm 1 is installed on the support 11, be positioned at the both sides of guide and guard mechanism 9, upper and lower at upright arm 1 is separately installed with lower branch arm 2, one end of last lower branch arm 2 is fixed on the Kong Wei up and down of upright arm 1 with pin 10, the other end is by being through by slotted hole on the tension force post 7 that is installed on the support 11, and connects with tension force post 7 by tension force post nut 8.The tension force post all has screw thread in two ends about in the of 7, and rotation direction is opposite, cooperate for the opposite threads duplicate invoice connects with tension force post nut 8 up and down, and tension force post nut 8 is installed in the end of lower branch arm 2, and with tension force post 7 screw threads assemblings, the adjustment that realizes up-down rollers 3 gaps by drawing tension post nut 8, tension force post 7.Between the last lower branch arm 2 tension spring 13 is installed, carries out pre-tensioning by elastic force.Roll 3 is installed on the lower branch arm 2 by roll mandrel 6 and roll nut 5, and axially adjustable.Between roll nut 5 and roll 3, install by pressure ring 4.On the roll mandrel 6 screw thread is arranged, can regulate the axial location of roll 3 on roll mandrel 6 by turn roll nut 5.

Guide and guard mechanism 9 can stablize direction and the position of reinforcing bar (rod) 12 before entering roll 3 by Roll Collar, helps out to guaranteeing rolling quality.The Roll Collar gap length can be adjusted, and to adapt to the rolling reinforcing bar production of different size, the mode that its gap is adjusted is a lot, and relatively Chang Yong mode is based on the worm and gear transmission adjustment mode of lever principle.

The course of work of this milling train: reinforcing bar 12 enters top and bottom rolls 3 through guide and guard mechanism 9, and the gap of guide and guard mechanism 9 is to adjust according to reinforcing bar (rod) size that enters, and generally is adjusted into the zero clearance.Roll 3 is axially adjustable, and the groove on the roll 3 must be adjusted to and make the center line of its groove consistent with the guide groove center line of the Roll Collar of guide and guard mechanism 9, adjusts to simultaneously to make the central lines unanimity of 3 liang of grooves of top and bottom rolls.According to the rolling mill practice requirement, by rotating tension force post 7 clockwise or counterclockwise, can make top and bottom rolls 3 roll gap become big or diminish, thereby reinforcing bar (rod) 12 is of the required size, when rolling, shorter by upright arm 1, support arm 2 and tension force post 7 formed line of tensions, good rigidly, and simple in structure, low cost of manufacture.

Claims

1, a kind of short-stress path rolling mill comprises support (11), is installed in two tension force posts (7), tension force post nut (8), roll (3), roll nut (5), roll mandrel (6) and guide and guard mechanism (9) on the support; It is characterized in that: two upright arms (1) are installed on described pedestal, use pin (10) to be fixed with lower branch arm (2) respectively in the position, hole up and down of described upright arm (1), the other end of last lower branch arm (2) is through on the tension force post (7) by slotted hole, and connects with tension force post (7) by tension force post nut (8); Described roll (3) is installed in respectively on the lower branch arm (2) by roll nut (5), roll mandrel (6), and end play is adjustable; Tension force post up and down two ends all has screw thread with the position that tension force post nut (8) assembles, and the thread rotary orientation at two ends is opposite up and down.

2, short-stress path rolling mill according to claim 1 is characterized in that, described roll mandrel has screw thread on (6), and roll nut (5) is assemblied on the roll mandrel (6), is positioned at roll (3) both sides, regulates the axial location of roll (3).

3, short-stress path rolling mill according to claim 1 and 2 is characterized in that, is provided with pressure ring (4) between the roll nut (5) of described roll (3) and both sides.

4, short-stress path rolling mill according to claim 3 is characterized in that, the described lower branch arm (2) of going up is provided with tension spring (13) between the opposite face that connects tension force post (7) end, last lower branch arm (2) is carried out pre-tensioning.