CN210966381U - Short stress rolling mill pressure-bearing flange - Google Patents
Short stress rolling mill pressure-bearing flange Download PDFInfo
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- CN210966381U CN210966381U CN201921824945.XU CN201921824945U CN210966381U CN 210966381 U CN210966381 U CN 210966381U CN 201921824945 U CN201921824945 U CN 201921824945U CN 210966381 U CN210966381 U CN 210966381U
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Abstract
The utility model discloses a short stress rolling mill bearing flange, which relates to the technical field of short stress rolling mill accessories and comprises a flange plate made of steel and a pull rod positioning copper sleeve sleeved on a pull rod, wherein the flange plate is fixedly connected with a rolling mill frame through a positioning bolt; one end of the flange plate extends outwards along the axial direction from the outer edge of the central hole to form a positioning convex ring, the positioning convex ring extends into the positioning hole of the rolling mill frame, the pull rod positioning copper sleeve is arranged in the positioning hole and is in interference fit with the rolling mill frame, and the pull rod positioning copper sleeve is positioned between the shoulder of the pull rod and the positioning convex ring. The utility model provides a current short stress rolling mill pressure-bearing flange can seriously influence the normal development of production and the problem of finished product quality to the wearing and tearing pull rod.
Description
Technical Field
The utility model belongs to the technical field of short stress rolling mill accessory technique and specifically relates to a pressure-bearing flange for steel industry short stress rolling mill.
Background
The short stress rolling mill is applied to a bar line section bar production line and mainly comprises five parts of base assembly, pull rod assembly, roller system assembly, pressing assembly and guide beam assembly. The stability control of the short stress rolling mill mainly depends on the pull rod assembly and the roller system assembly. Four pull rods in the pull rod assembly act on four corners of the rolling mill respectively, and the pull rods are positioned on the rack by two pressure-bearing flanges respectively; the pressure-bearing flange is fixed on the frame to play a role in positioning; the pull rod rotates to support the upper and lower rollers and regulate the roller gap. The matching tolerance range of the inner diameter of the bearing flange and the outer diameter of the pull rod used by the applicant in the past is as follows: 0.12-0.25 mm, axial adjusting gap of 0.1-0.2 mm, and material of the pressure-bearing flange is ZCuAl10Fe3The material of the pull rod is 42 CrMo. When the pressure-bearing flange and the pull rod move mutually, mutual friction can be generated, and the pressure-bearing flange is soft in material, so that the pressure-bearing flange is worn firstly, and the pull rod is protected. Due to the limitation of installation space, the number of the 12 positioning bolts for fixing the pressure-bearing flange is only M8. In the actual production process, the impact force applied to the rolling mill also changes randomly due to the change of the material type and the steel temperature, so that the failure of the rolling mill caused by the breakage of the positioning bolts of the pressure-bearing flange frequently occurs. Because the pressure-bearing flange is made of copper, after the positioning bolt is broken, the broken bolt cannot be taken out and a new bolt cannot be returned on line, the positioning bolt cannot be repositioned in a temporary welding mode, only the rolling mill can be replaced for offline maintenance, the yield is limited, and the labor intensity of workers is increased. The applicant changes the pressure-bearing legal material into 45 steel, and after the positioning bolt is broken, the positioning bolt can be processed in a mode of temporarily welding the pressure-bearing flange on site, so that similar rolling mill faults are temporarily relieved. With the improvement of the steel industry market in two years, the rolling mill is in an overload running state for a long time, and parts of the rolling mill are abradedIs a major factor causing poor stability of the rolling mill. The bearing flange after being changed in material causes great damage to the pull rod, the pull rod loses the positioning effect after being worn, and a rolling mill shakes violently in the production process, so that the normal development of production and the quality of finished products are seriously influenced. The pull rod is a main part of the pull rod assembly, and is expensive and more in number. Therefore, how to reduce the faults and avoid the wear of the pull rod is realized, so that the rolling mill meets the designed use requirement, and the reasonable improvement of the pressure-bearing flange is of great importance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a short stress rolling mill bearing flange, this kind of flange can solve current short stress rolling mill bearing flange and can be to wearing and tearing pull rod, seriously influence the normal development of production and the problem of finished product quality.
In order to solve the above problem, the utility model discloses a technical scheme is: the short-stress rolling mill pressure-bearing flange comprises a flange plate made of steel and a pull rod positioning copper sleeve sleeved on a pull rod, wherein the flange plate is fixedly connected with a rolling mill frame through a positioning bolt; one end of the flange plate is formed by extending the outer edge of the central hole outwards along the axial direction to form a positioning convex ring, the positioning convex ring extends into the positioning hole of the rolling mill frame, the pull rod positioning copper sleeve is arranged in the positioning hole in interference fit with the rolling mill frame, and the pull rod positioning copper sleeve is positioned between the shoulder of the pull rod and the positioning convex ring.
In the above technical scheme of the short stress rolling mill pressure-bearing flange, a more specific technical scheme may also be: and a positioning ring groove for placing a dust ring is formed in the wall of the central hole on the flange plate, and the positioning ring groove is positioned at one end, far away from the positioning convex ring, of the flange plate.
Furthermore, an oil storage tank with one end extending to the outer end face of the positioning convex ring is axially arranged on the flange plate on the hole wall of the central hole, and the oil storage tank is isolated from the positioning ring groove.
Furthermore, a plurality of oil storage tanks are arranged on the hole wall of the central hole in an annular array.
Furthermore, the outer edge of the flange plate is provided with a chamfer, and a bolt hole of the positioning bolt penetrates through the inclined plane of the chamfer to form a notch.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
1. the pressure-bearing flange is designed into a split structure which is not composed of a steel flange plate and a pull rod positioning copper ring, so that the condition that the rolling mill shakes violently due to the fact that the pull rod is abraded is avoided, the quality of a finished product is guaranteed, and meanwhile, the normal development of production can be guaranteed through a processing mode of temporarily welding the pressure-bearing flange on site after a positioning bolt of the pressure-bearing flange is broken;
2. the pressure-bearing flange is convenient and practical to mount, has a very good using effect, greatly improves the stability and the service life of a rolling mill in the production process, reduces the fault time, effectively improves the production operation rate and stabilizes the product quality;
3. when the rolling mill is maintained, only the worn copper ring at the lower part needs to be replaced, the steel part at the upper part is not easy to damage and does not need to be replaced, and the cost of spare parts is reduced;
4. a positioning ring groove is arranged to install a dust ring, so that dust is prevented from entering between the pressure-bearing flange and the pull rod to influence the rotation of the pull rod;
5. oil storage tanks are uniformly distributed, so that the pull rod is ensured to have enough lubricating oil for lubrication;
6. the chamfer inclined plane which is penetrated through the bolt hole is arranged on the flange plate, and whether the bolt is lost, loosened or broken or not can be conveniently checked from the formed notch.
Drawings
FIG. 1 is a schematic structural diagram of a pressure-bearing flange of the short-stress rolling mill.
FIG. 2 is an assembly schematic diagram of the pressure-bearing flange of the short-stress rolling mill.
Detailed Description
The invention will be described in more detail with reference to the following embodiments:
shown in FIGS. 1 and 2The short stress rolling mill pressure-bearing flange is of an up-down split structure and mainly comprises a flange plate 1 made of steel and a pull rod positioning copper sleeve 2 sleeved on a pull rod 4, wherein the flange plate 1 and the pull rod positioning copper sleeve 2 are coaxially arranged, the flange plate 1 is also sleeved on the pull rod 4 and is fixedly connected with a rolling mill frame 3 through a plurality of positioning bolts, and a pull rod positioning sleeve 2 is embedded in a positioning hole of the rolling mill frame 3 and is in interference fit with the rolling mill frame 3; in order to avoid the flange plate 1 from wearing the pull rod 4, the aperture of the central hole 1-1 of the flange plate 1 is slightly larger than the inner diameter of the pull rod positioning copper sleeve 2. The flange plate 1 of the embodiment is made of 45 steel, and the pull rod positioning copper sleeve 2 is made of ZCuAl10Fe3. The outer edge of one end face of the flange plate 1 is provided with a chamfer, the inclined plane 1-5 of the chamfer and the bolt hole 1-4 for penetrating and installing the positioning bolt penetrate to form a gap, and the state of the positioning bolt can be observed more conveniently from the gap; on the other end face of the flange plate 1, a positioning convex ring 1-6 is formed by extending the hole wall of the central hole 1-1 outwards along the axial direction, the positioning convex ring 1-6 is inserted into the positioning hole of the rolling mill frame 3, the rapid positioning can be realized, the positioning convex ring can be matched with the pull rod positioning sleeve 2 to obtain accurate measurement data, the gap adjustment during the assembly is convenient, and the control requirement of the 0.1-0.2 mm axial gap between the flange and the pull rod 4 is met. In order to ensure the smooth rotation of the pull rod and reduce friction, a plurality of oil storage tanks 1-3 are distributed on the hole wall of the central hole 1-1 of the flange plate 1, one ends of the oil storage tanks 1-3 axially extend from the middle of the hole wall of the central hole 1-1 to the outer end face of the positioning convex ring 1-6, and the oil storage tanks 1-3 are annularly arranged on the hole wall by taking the axis of the flange plate 1 as a central line, so that the uniform lubrication effect can be achieved. A positioning ring groove 1-2 for placing a dust ring 5 is formed in the hole wall of a central hole 1-1 of a flange plate 1, the positioning ring groove 1-2 is isolated from an oil storage tank 1-3 and is positioned at one end, far away from a positioning convex ring 1-6, of the flange plate 1, the positioning ring groove 1-2 in the embodiment is a groove body of a stepped structure formed by combining a small-diameter groove 1-21 and a large-diameter groove 1-22, and the small-diameter groove 1-21 is formed between the end face of the flange plate 1 and the large-diameter groove 1-22 so as to be convenient for embedding the dust ring 5 and avoid axial movement of the dust ring 5.
As shown in fig. 2, during assembly, to install the short-stress rolling mill pressure-bearing flanges at the two ends of the pull rod 4, the pressure-bearing flange located below is installed first, the pull rod 4 is inserted into the positioning hole of the rolling mill housing 3, the lower end of the pull rod is inserted into the pressure-bearing flange below, then the pressure-bearing flange above is sleeved on the upper portion of the pull rod 4, and the pull rod 4 is connected and fixed through the positioning bolt, so that the assembly of the pull rod 4 is completed. When the pressure-bearing flange is installed, the pull rod positioning sleeve 2 is firstly embedded into a positioning hole of the rolling mill frame 3, the pull rod 4 is inserted into the pull rod positioning sleeve 2, one end of the pull rod positioning sleeve 2 is abutted to a shoulder of the pull rod 4, then the flange plate 1 is sleeved on the pull rod 4, the positioning convex rings 1-6 of the flange plate 1 are inserted into the positioning hole of the rolling mill frame 3, the pull rod positioning copper sleeve 2 is positioned between the shoulder of the pull rod 4 and the positioning convex rings 1-6 of the flange plate 1, the gap between the positioning convex rings 1-6 and the pull rod positioning copper sleeve 2 is controlled to be 0.1 mm-0.2 mm, and finally the flange plate 1 is connected and fixed on the rolling mill frame 3 through the positioning bolt.
The structure and the material of the pressure-bearing flange of the short-stress rolling mill are redesigned, and when the positioning bolt of the pressure-bearing flange is broken, the fault can be temporarily processed in a welding mode; on the premise of ensuring that the positioning effect meets the design and use requirements, the pull rod is prevented from being damaged, and the stability of the rolling mill is improved.
Claims (5)
1. The utility model provides a short stress rolling mill pressure-bearing flange which characterized in that: the rolling mill comprises a flange plate made of steel and a pull rod positioning copper sleeve sleeved on a pull rod, wherein the flange plate is fixedly connected with a rolling mill frame through a positioning bolt; one end of the flange plate is formed by extending the outer edge of the central hole outwards along the axial direction to form a positioning convex ring, the positioning convex ring extends into the positioning hole of the rolling mill frame, the pull rod positioning copper sleeve is arranged in the positioning hole in interference fit with the rolling mill frame, and the pull rod positioning copper sleeve is positioned between the shoulder of the pull rod and the positioning convex ring.
2. The short stress rolling mill pressure-bearing flange according to claim 1, characterized in that: and a positioning ring groove for placing a dust ring is formed in the wall of the central hole on the flange plate, and the positioning ring groove is positioned at one end, far away from the positioning convex ring, of the flange plate.
3. The short stress rolling mill pressure flange according to claim 2, characterized in that: and an oil storage tank with one end extending to the outer end face of the positioning convex ring is axially arranged on the flange plate on the hole wall of the central hole, and the oil storage tank is isolated from the positioning ring groove.
4. A short stress rolling mill pressure flange according to claim 3, characterized in that: and a plurality of oil storage tanks are arranged on the hole wall of the central hole in an annular array.
5. A short stress rolling mill pressure-bearing flange according to any one of claims 1 to 4, characterized in that: and the outer edge of the flange plate is provided with a chamfer, and a bolt hole of the positioning bolt penetrates through the inclined plane of the chamfer to form a notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921824945.XU CN210966381U (en) | 2019-10-28 | 2019-10-28 | Short stress rolling mill pressure-bearing flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921824945.XU CN210966381U (en) | 2019-10-28 | 2019-10-28 | Short stress rolling mill pressure-bearing flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210966381U true CN210966381U (en) | 2020-07-10 |
Family
ID=71440684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921824945.XU Active CN210966381U (en) | 2019-10-28 | 2019-10-28 | Short stress rolling mill pressure-bearing flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210966381U (en) |
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2019
- 2019-10-28 CN CN201921824945.XU patent/CN210966381U/en active Active
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