High-speed wire and bar direct-drive roller box

Abstract

The utility model belongs to the technical field of high-speed wire rod rolling mills, and particularly discloses a high-speed wire and bar direct-drive roller box. According to the technical scheme, the direct-drive roller box comprises a left roller shaft, a right roller shaft, a roller box body, a left roller shaft gap mechanism and a right roller shaft gap mechanism, wherein the left roller shaft and the right roller shaft are used for realizing online rolling of wires and bars; the roller box body is used for fixedly supporting the left roller shaft and the right roller shaft; the rolling ends of the left roller shaft and the right roller shaft are fixed to the roller box through oil film bearings respectively, and the small ends of the left roller shaft and the right roller shaft are fixed to the roller box through rolling bearings respectively. Rotor coil assemblies are arranged on shaft bodies forming the left roller shaft and the right roller shaft respectively, and corresponding stator coil assemblies are arranged on the inner walls, corresponding to the rotor coil assemblies, of the left roller shaft roll gap mechanism and the right roller shaft roll gap mechanism. A control mechanism electrically connected with the stator coil assembly is arranged on the outer wall of the left roller shaft roll gap mechanism and the outer wall of the right roller shaft roll gap mechanism. The pre-finishing mill module has the advantages of being simple in structure, low in equipment failure rate and high in transmission efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-speed wire rolling mills, and in particular relates to a high-speed wire and bar direct-drive roll box used for a pinch roll box and a rolling mill roll box. Background Art

[0002] The rolling process of high-speed wire rod includes rough rolling process, pre-finishing rolling process and finishing rolling process. The pinch roll box and mill roll box (such as Figure 1 The invention is shown in the figure, and is composed of a motor mechanism (1), a speed change mechanism (2), a gear box (3) fixed with a bevel gear pair (4) and a driven shaft (31) and an idler shaft (32), and a roller box (5) fixed with left and right rollers (51) and (52) for clamping or rolling the wire rod. The working principle is that the power motor (1) drives the bevel gear pair (4) in the bevel wheel box through the gearbox (2), and then the bevel gear pair drives the driven shaft (31) and the idler shaft (32), thereby driving the left and right rollers (51, 52) in the roller box to realize online clamping or rolling of the wire rod. The roller box of this structure is not only large in size, complex in structure, low in transmission efficiency and high in failure rate, but also has extremely high energy consumption due to the presence of a gearbox and a bevel gear pair with extremely large volume. Utility Model Content

[0003] The utility model aims to provide a high-speed line and bar direct-drive roll box which has a simple structure, low equipment failure rate and high transmission efficiency and is suitable for a rolling mill roll box or a pinch roll box.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A high-speed wire and bar direct-drive roller box, which comprises a left roller and a right roller for realizing online rolling of wire and bar, a roller box for fixing and supporting the left roller and the right roller, and a left roller gap mechanism and a right roller gap mechanism for adjusting the distance between the left roller and the right roller; the characteristics are:

[0006] The rolling or pinching ends of the left roller and the right roller are fixed to the roller box through oil film bearings, and the small ends thereof are fixed to the roller box through rolling bearings;

[0007] Rotor coil assemblies are respectively arranged on the shafts constituting the left roller and the right roller, and corresponding stator coil assemblies are arranged on the inner walls of the left roller seam mechanism and the right roller seam mechanism corresponding to the rotor coil assemblies; control mechanisms electrically connected to the stator coil assemblies are arranged on the outer walls of the left roller seam mechanism and the right roller seam mechanism.

[0008] Additional technical features of the above-mentioned high-speed line and bar direct-drive roller box include:

[0009] 1. A symmetrical meshing gear mechanism is respectively arranged at the small ends of the left roller shaft and the right roller shaft;

[0010] 2. A roller shaft small end oil film bearing is provided at the small end of the left roller shaft and the right roller shaft;

[0011] 3. The left roller shaft roll gap mechanism and the right roller shaft roll gap mechanism are composed of eccentric sleeve mechanisms arranged on the roll shaft and the right roller shaft;

[0012] 4. The left roller gap mechanism and the right roller gap mechanism are constituted by spacing adjustment mechanisms arranged on the left roller and the right roller.

[0013] Compared with the prior art, the high-speed wire and bar direct-drive roll box suitable for the rolling mill roll box or the pinch roll box provided by the utility model has the following advantages: first, since the left and right rollers constituting the high-speed wire and bar direct-drive roll box are respectively composed of the rotor coil assembly arranged on the shaft body and the stator coil assembly respectively arranged on the inner wall of the left roller gap mechanism and the right roller gap mechanism, the left and right rollers constitute two synchronous and parallel motor structures, and the motors directly drive the left and right rollers to rotate, thereby eliminating the motor mechanism, the speed change mechanism and the bevel gear arranged in the bevel gear box in the prior art, and the passive shaft and the idle shaft driven by the bevel gear. The box structure is greatly simplified, the equipment failure rate is reduced, and the rolling efficiency of the high-speed wire and bar is improved; second, symmetrical meshing gear mechanisms are respectively arranged at the small ends of the left roller and the right roller, which can effectively ensure the consistency of the rotation speeds of the left roller and the right roller, and effectively improve the rolling and pinching stability of the wire and bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a rolling mill roll box in the prior art;

[0015] Figure 2 This is a schematic diagram of the structure of the high-speed line and bar direct-drive roller box provided by the utility model;

[0016] Figure 3 It is a schematic diagram of the first structure of the left and right roller shafts in the direct-drive roller box;

[0017] Figure 4 A schematic diagram of a second structure of left and right roller shafts constituting a direct-drive roller box;

[0018] Figure 5 To constitute Figure 4 The structural schematic diagram of the direct drive roller box shown;

[0019] Figure 6 To constitute Figure 4 Schematic diagram of the meshing structure of the left and right rollers shown

[0020] Figure 7 It is a schematic diagram of the structure of the eccentric sleeve mechanism on the left and right roller shafts;

[0021] Figure 8 It is a schematic diagram of the structure of the spacing adjustment mechanism on the left and right roller shafts;

[0022] Fig. 9 For use Figure 8 The schematic diagram of the structure of the pinch roller box with the spacing adjustment mechanism shown. DETAILED DESCRIPTION

[0023] The structure and working principle of the high-speed wire and bar direct-drive roll box unit provided by the utility model for use in a high-speed wire rolling mill module are further described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 2 , 3 , 7 and 9 are schematic diagrams of the structure of a high-speed wire and bar (rolling and pinching) direct-drive roller box provided by the utility model for use on a rolling mill. The structure constituting the high-speed wire and bar direct-drive roller box includes: a left rolling roller shaft 51 and a right rolling roller shaft 52 capable of realizing online rolling of wires and bars, and a roller box body 5 for fixing and supporting the left rolling roller shaft 51 and the right rolling roller shaft 52; a left rolling roller shaft roll gap mechanism 501 consisting of a left eccentric sleeve mechanism 511 and a corresponding left adjusting screw 512 matched therewith is fixed on the left rolling roller shaft 51, and a right rolling roller shaft roll gap mechanism 502 consisting of a right eccentric sleeve mechanism 521 and a corresponding right adjusting screw 522 matched therewith is fixed on the right rolling roller shaft 52. Among them, the rolling end and the small end of the above-mentioned left roller shaft 51 and the right roller shaft 52 are fixed to the roller box 5 through the oil film bearing 41 and the rolling bearing 42 respectively; the corresponding left rotor coil assembly 53 and the right rotor coil assembly 54 are respectively arranged on the shaft bodies constituting the above-mentioned left roller shaft 51 and the right roller shaft 52, and the corresponding left stator coil assembly 55 and the right stator coil assembly 56 are respectively arranged on the inner walls of the left roller shaft roll gap mechanism and the right roller shaft roll gap mechanism corresponding to the left and right rotor coil assemblies; and the control mechanism 57 electrically connected to the above-mentioned left and right stator coil assemblies is arranged on the outer walls of the left roller shaft roll gap mechanism and the right roller shaft roll gap mechanism.

[0025] Its working principle is to connect the control mechanism 57 to an AC power supply, that is, the left rotor coil assembly 53 and the left stator coil assembly 55 fixed on the left roller shaft 51 and the left roller shaft roll gap mechanism 501, and the right rotor coil assembly 54 and the right stator coil assembly 56 fixed on the right roller shaft 52 and the right roller shaft roll gap mechanism 502 respectively form a left and a right motor mechanism, and respectively constitute the left and right motor mechanism rotating shafts to drive the left roller shaft 51 and the right roller shaft 52 to rotate towards each other at the same time, thereby completing the rolling of high-speed wire and bar; the control mechanism 57 simultaneously controls the consistency of the voltage, current and other electrical parameters transmitted to the two motor mechanisms to ensure that the left and right motor mechanisms can rotate towards each other synchronously, so as to ensure the stability of the rolling or clamping performance of the high-speed wire and bar 7.

[0026] In the structure constituting the above-mentioned high-speed line and bar direct-drive roller box:

[0027] 1. In order to further improve the synchronization performance of the rotation speed of the left rolling roller shaft 51 and the right rolling roller shaft 52 and realize the quality control of the high-speed rolling of the wire rod, such as Figure 4 , 5 As shown in Figures 6 and 7, symmetrical left and right gears 58 and 59 are respectively provided at the small ends of the left roller shaft 51 and the right roller shaft 52, and the left and right gears 58 and 59 constitute a meshing gear mechanism with the left and right pinions 581 and 591 provided in the roller box; that is, the left and right gears 58 and 59 are meshed with each other through the meshing gear mechanism, so that the consistency of the rotational speeds of the left roller shaft 51 and the right roller shaft 52 can be achieved; of course, the left and right gears 58 and 59 are designed as directly meshing gear structures, which can also directly achieve the consistency of the rotational speeds of the left roller shaft 51 and the right roller shaft 52.

[0028] 2. Due to the high-speed rotation of the left roller shaft 51 and the right roller shaft 52 when rolling the wire, the roller shaft 51 and the fixed support box must be firm. In order to further improve the firmness, Figure 3 , 4 As shown, the small ends of the left roller shaft 51 and the right roller shaft 52 are provided with roller shaft small end oil film bearings 43, which can enable the high-speed rotating left roller shaft 51 and the right roller shaft 52 to withstand a large torque when rolling wire rods, and play a supporting and protective role for the high-speed rotating roller shafts;

[0029] 3. The left roller shaft gap mechanism and the right roller shaft gap mechanism for adjusting the distance between the left roller shaft 51 and the right roller shaft 52 can be as follows: Figure 7 The eccentric sleeve mechanism formed by the corresponding left and right eccentric sleeves 511, 521 and the corresponding left and right adjusting screws 512, 522 arranged on the left roller shaft 51 and the right roller shaft 52 is generally used in the roller box of the rolling mill; it can also be as shown in Figure 8 , 9The spacing adjustment mechanism 6 shown is arranged on the left roll shaft 51 and the right roll shaft 52; the spacing adjustment mechanism includes an upper adjustment mechanism 61 and a lower adjustment mechanism 62 respectively fixed on the left roll shaft 51 and the right roll shaft 52, and the upper and lower adjustment mechanisms can mesh and rotate through the corresponding fixed upper and lower arc-shaped racks 601 and 602, and the motor 64 fixed on the pinch roller box 5 and the rack 63 with the upper adjustment mechanism 61. The motor 64 drives the rack 63 to move up and down and drives the upper adjustment mechanism 61 to swing up and down, which can realize the symmetrical and uniform opening and closing of the left roll shaft 51 and the right roll shaft 52 relative to the rolling center line, thereby realizing the roller gap adjustment to meet the rolling or pinching of wires, bars 7 and round steels of different specifications.

Claims

1. A high-speed wire and bar direct-drive roll box, the structure of which comprises a left roll shaft (51) and a right roll shaft (52) for realizing online rolling of wire and bar, a roll box (5) for fixedly supporting the left roll shaft (51) and the right roll shaft (52), and a left roll shaft roll gap mechanism and a right roll shaft roll gap mechanism for adjusting the distance between the left roll shaft and the right roll shaft; characterized in that: The rolling ends of the left roller shaft (51) and the right roller shaft (52) are fixed to the roller box via oil film bearings, and the small ends thereof are fixed to the roller box via rolling bearings; Rotor coil assemblies are respectively arranged on the shaft bodies constituting the left roller shaft (51) and the right roller shaft (52); corresponding stator coil assemblies are arranged on the inner walls of the left roller shaft roll gap mechanism and the right roller shaft roll gap mechanism corresponding to the rotor coil assemblies; and control mechanisms electrically connected to the stator coil assemblies are arranged on the outer walls of the left roller shaft roll gap mechanism and the right roller shaft roll gap mechanism.

2. A high-speed wire and bar direct-drive roller box as claimed in claim 1, characterized in that: Symmetrical meshing gear mechanisms are respectively arranged at the small ends of the left roller shaft (51) and the right roller shaft (52).

3. A high-speed wire and bar direct-drive roller box as claimed in claim 1, characterized in that: Roller shaft small end oil film bearings are provided at the small ends of the left rolling roller shaft (51) and the right rolling roller shaft (52).

4. A high-speed wire and bar direct-drive roller box as claimed in claim 1, characterized in that: The left roller shaft roll gap mechanism and the right roller shaft roll gap mechanism are composed of eccentric sleeve mechanisms arranged on the left roller shaft (51) and the right roller shaft (52).

5. A high-speed wire and bar direct-drive roller box as claimed in claim 1, characterized in that: The left roller shaft gap mechanism and the right roller shaft gap mechanism are constituted by spacing adjustment mechanisms arranged on the left roller shaft (51) and the right roller shaft (52).

Images