Reeling drum of single-stand rolling mill with integrated shaft structure

Abstract

The utility model discloses a single-stand rolling mill coiling drum with an integrated shaft structure, which relates to the technical field of metallurgical machinery and comprises a mandrel, a pyramid shaft is arranged at the left end of the mandrel, a hollow shaft is sleeved on the mandrel, sector plates are arranged on the periphery of the pyramid shaft, the sector plates are connected with the pyramid shaft through connecting keys, and T-shaped sliding blocks are fixedly mounted at the right ends of the sector plates. Copper sleeves are arranged on the inner walls of the left end and the right end of the hollow shaft, a flange is arranged at the left end of the hollow shaft, R-angle transition is arranged between the flange and the side face of the hollow shaft, a sliding groove corresponding to the sliding block is formed in the flange, R-angle transition is arranged at the corner of the inner side of the sliding groove, and the sliding block is clamped in the sliding groove and slides in the radial direction of the hollow shaft; the hollow shaft has the beneficial effects that after the structure is optimized, the phenomena that the original position of the hollow shaft is easy to fracture, oil leakage, oil leakage, tearing, fracture, large jumping value and the like are easy to occur in field use are changed, stress concentration is avoided, the strength of the hollow shaft is improved, the service life is prolonged, the jumping value is small, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical machinery, in particular to a single-frame rolling mill coiling drum with an integrated shaft structure. Background Art

[0002] After processing, the steel strip and aluminum strip need to be coiled into a coil to facilitate the next process, transportation and sale. After the steel strip and aluminum strip are coiled, they need to be unloaded from the coiler. Figure 1-Figure 7 As shown, the existing take-up reel includes a core shaft, a pyramid shaft is fixedly installed on the left end of the core shaft, a hollow shaft is sleeved on the core shaft, fan-shaped plates are arranged around the pyramid shaft, the fan-shaped plates and the pyramid shaft are connected by a connecting key, a T-shaped slider is fixedly installed on the right end of the fan-shaped plate, copper sleeves are arranged on the inner walls of the left and right ends of the hollow shaft, a flange is arranged on the left end of the hollow shaft, a slide groove is arranged on the flange corresponding to the slide groove, the slide groove is stuck in the slide groove and slides radially along the hollow shaft, a guide groove is arranged on the core shaft, a guide key is inserted at the position corresponding to the guide groove on the hollow shaft, and a pressure plate is fixedly installed on the outer surface of the hollow shaft at the position corresponding to the guide key Plate, a hydraulic cylinder is fixedly installed on the right end of the hollow shaft, the piston of the hydraulic cylinder is fixed on the right end of the mandrel, and a rotary joint is arranged on the right end of the hydraulic cylinder; the oil passage inside the hollow shaft includes a first hydraulic oil hole, a second hydraulic oil hole, a third hydraulic oil hole and a fourth hydraulic oil hole, the first hydraulic oil hole extends from the left end of the hollow shaft to the inside, the second hydraulic oil hole extends from the side of the hollow shaft to the inside, the third hydraulic oil hole extends from the side of the flange to the inside, and the fourth hydraulic oil hole extends from the right end of the hollow shaft to the inside, and the openings of the first hydraulic oil hole and the second hydraulic oil hole are blocked by welding. However, the take-up drum is usually installed at a right angle to the root of the winding machine. During the on-site winding and tensioning of this structure, due to the large tension (about 15 tons) and fast speed of the single-stand rolling mill, coupled with the problems of machining accuracy and roughness of the original equipment, it is easy to cause cracks or even breakage at the root of the hollow shaft and the slider screw is broken by shear force. During on-site use, it is easy to break and crack, and the runout value is large. Due to work requirements, this type of reel has a mechanical hydraulic jaw, and the hollow shaft itself has a hydraulic oil circuit. After breaking, the hollow shaft will seep and leak oil, the reel jaw cannot be used normally, and the large runout value will cause damage to the plate type, and more seriously, it will directly cause the equipment to shut down. During on-site use, it is easy for the support position to run out too much, the inner hole of the hollow shaft copper sleeve is not concentric with the outer cylindrical bearing position and gear position, the pyramid shaft and the inner hole of the copper sleeve are not concentric and there is a gap, the runout is large, and cracks, oil seepage, and oil leakage appear at the root of the hollow shaft. It is inconvenient to disassemble and operate during on-site maintenance and repair; and the first hydraulic oil hole and the second hydraulic oil hole are welded and blocked, which is prone to oil leakage and seepage after a period of use. Utility Model Content

[0003] The purpose of the utility model is to provide a single-frame rolling mill coiling reel with an integrated shaft structure, which has a simple structure, stable operation and high reliability in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A winding drum of a single-frame rolling mill with an integrated shaft structure comprises a core shaft, the left end of the core shaft is set as a pyramid shaft, a hollow shaft is sleeved on the core shaft, fan-shaped plates are set around the pyramid shaft, the fan-shaped plates are connected to the pyramid shaft by a connecting key, a T-shaped slider is fixedly installed on the right end of the fan-shaped plate, copper sleeves are set on the inner walls of the left and right ends of the hollow shaft, a flange is set at the left end of the hollow shaft, an R-angle transition is set between the flange and the side surface of the hollow shaft, a slide groove is set on the flange corresponding to the slider, an R-angle transition is set at the inner corner of the slide groove, the slider is clamped in the slide groove and slides radially along the hollow shaft, a guide groove is set on the core shaft, a guide key is inserted into the hollow shaft corresponding to the guide groove position, and the outer surface of the hollow shaft A pressure plate is fixedly installed corresponding to the position of the guide key, a hydraulic cylinder is fixedly installed on the right end of the hollow shaft, the piston of the hydraulic cylinder is fixed on the right end of the core shaft, and a rotary joint is arranged on the right end of the hydraulic cylinder; the oil passage inside the hollow shaft comprises a first hydraulic oil hole, a second hydraulic oil hole, a third hydraulic oil hole and a fourth hydraulic oil hole, the first hydraulic oil hole extends inward from the left end face of the hollow shaft, the second hydraulic oil hole extends inward from the side face of the hollow shaft, the third hydraulic oil hole extends inward from the side face of the hollow shaft close to one end of the flange, the fourth hydraulic oil hole extends inward from the right end face of the hollow shaft, and the orifice positions of the first hydraulic oil hole and the second hydraulic oil hole are sealed with a taper plug by a taper drilling method.

[0006] Preferably: a cone head is provided at the left end of the pyramid shaft through a bearing sleeve.

[0007] Preferably: the number of the sector plates is four, one of which is a jaw sector plate; the connecting key includes a T key and a dovetail key; the jaw sector plate is slidably connected to the pyramid shaft via the dovetail key, and the remaining three sector plates are slidably connected to the pyramid shaft via the T key.

[0008] Preferably: the copper sleeve is cold-mounted on both ends of the hollow shaft in an overfitting manner.

[0009] Preferably, the thickness of the flange is increased and the root portion thereof is in an arc transition.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The thickness of the hollow shaft flange is thickened, and the flange and the packaging position have a large arc transition at the root. The root R transition roughness requirements at the four grooves are increased to avoid stress concentration. The hollow shaft with optimized structural design increases strength, thickness increases, root arc transition, and the roughness requirements at the arc transition area are increased to avoid stress concentration. The hollow shaft with optimized structural design increases strength, extends service life, improves production efficiency, and reduces production costs;

[0012] 2. The radial hydraulic oil hole with thin wall thickness at the original flange position is changed to a circular position with thick wall thickness;

[0013] 3. The hydraulic oil holes are drilled with taper wire and sealed with taper wire plugs, which improves the original welding plugging and prevents oil leakage and oil seepage after a period of use;

[0014] 4. The copper sleeves at both ends of the inner hole of the hollow shaft are cold-fitted by over-fitting, and then the inner hole size of the copper sleeves at both ends is fine-machined to ensure that the inner hole is concentric with the hollow shaft; in this way, the effective runout value is achieved after the reel is assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the internal structure of an existing take-up reel.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the hollow shaft of the existing take-up reel.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the hollow shaft of the existing take-up reel from another perspective.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the core shaft of the existing take-up reel.

[0020] Figure 5 It is a schematic diagram of the internal structure of the hollow shaft of the existing take-up reel.

[0021] Figure 6 It is a sectional view taken along the FF direction of an existing take-up reel.

[0022] Figure 7 It is a GG sectional view of the existing take-up reel.

[0023] Figure 8It is a schematic diagram of the internal structure of a hollow shaft of a winding drum of a single-frame rolling mill with an integrated shaft structure described in the utility model.

[0024] Fig. 9 It is a cross-sectional view of the F'-F' direction of a coiling drum of a single-frame rolling mill with an integrated shaft structure described in the utility model.

[0025] Fig.10 It is a G'-G' sectional view of a coiling drum of a single-frame rolling mill with an integrated shaft structure described in the utility model.

[0026] The following are the descriptions of the reference numerals:

[0027] 1. Mandrel; 2. Pyramid shaft; 3. Hollow shaft; 4. Fan-shaped plate; 5. Connecting key; 6. Flange; 7. Slide groove; 8. Sliding block; 9. Guide groove; 10. Guide key; 11. Pressing plate; 12. Hydraulic cylinder; 13. Rotary joint; 14. Copper sleeve; 151. First hydraulic oil hole; 152. Second hydraulic oil hole; 153. Third hydraulic oil hole; 154. Fourth hydraulic oil hole; 16. Cone head. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0030] The utility model is further described below in conjunction with the accompanying drawings:

[0031] like Figure 8-Figure 10 As shown, a single-frame rolling mill winding drum with an integrated shaft structure includes a mandrel 1, a pyramid shaft 2 is set at the left end of the mandrel 1, a hollow shaft 3 is sleeved on the mandrel 1, a fan-shaped plate 4 is set around the pyramid shaft 2, the fan-shaped plate 4 and the pyramid shaft 2 are connected by a connecting key 5, a T-shaped slider 8 is fixedly installed on the right end of the fan-shaped plate 4, copper sleeves 14 are set on the inner walls of the left and right ends of the hollow shaft 3, a flange 6 is set at the left end of the hollow shaft 3, an R angle transition is set between the flange 6 and the side of the hollow shaft 3, a slide groove 7 is set on the flange 6 corresponding to the slide 8, and a sliding groove 7 is set on the sliding groove 7. An R angle transition is set at the inner corner of the groove 7, and the two R angle transitions avoid stress concentration. The hollow shaft 3 with optimized structural design increases strength, increases thickness, and has a circular arc transition at the root. The roughness requirement at the place where the circular arc is excessive is improved to avoid stress concentration. The hollow shaft 3 with optimized structural design increases strength, extends service life, improves production efficiency, and reduces production costs; the slider 8 is stuck in the slide groove 7 and slides radially along the hollow shaft 3. A guide groove 9 is provided on the core shaft 1, and a guide key 10 is inserted at the position corresponding to the guide groove 9 on the hollow shaft 3. A pressure plate 11 is fixedly installed on the outer surface of the spindle 3 corresponding to the position of the guide key 10, a hydraulic cylinder 12 is fixedly installed on the right end of the hollow shaft 3, the piston of the hydraulic cylinder 12 is fixed on the right end of the spindle 1, and a rotary joint 13 is arranged on the right end of the hydraulic cylinder 12; the oil passage inside the hollow shaft 3 includes a first hydraulic oil hole 151, a second hydraulic oil hole 152, a third hydraulic oil hole 153 and a fourth hydraulic oil hole 154, the first hydraulic oil hole 151 extends from the left end of the hollow shaft 3 to the inside, and the second hydraulic oil hole 152 extends from the side of the hollow shaft 3 to the inside. The third hydraulic oil hole 153 extends inward from the side of the hollow shaft 3 close to the flange 6. The original flange 6 position has a thin wall thickness and the radial third hydraulic oil hole 153 is changed to the side of the hollow shaft 3 to reduce the strength influence of the flange 6. The fourth hydraulic oil hole 154 extends inward from the right end of the hollow shaft 3. The orifice positions of the first hydraulic oil hole 151 and the second hydraulic oil hole 152 are sealed with a taper wire plug by a taper wire drilling method, which improves the original welding plug, which is prone to oil leakage and oil seepage after a period of use.

[0032] A cone head 16 is provided at the left end of the pyramid shaft 2 through a bearing; there are four sector plates 4, one of which is a jaw sector plate 4; the connecting key 5 includes a T key and a dovetail key; the jaw sector plate 4 is slidably connected to the pyramid shaft 2 through the dovetail key, and the remaining three sector plates 4 are slidably connected to the pyramid shaft 2 through the T key; the copper sleeve 14 is cold-mounted at both ends of the hollow shaft 3 in an overfit manner, and then the inner hole size of the copper sleeve 14 at both ends is finely machined to ensure that the inner hole is concentric with the hollow shaft 3; in this way, the effective runout value after the reel is assembled is achieved; the thickness of the flange 6 is increased and the root is transitioned into a circular arc, which increases the tensile strength of the flange 6 connecting the sector plate 4.

[0033] The jaw sector plate 4 is a universal standard part or a part known to those skilled in the art. Its structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods, so no further description will be made here.

[0034] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements shall fall within the scope of the utility model to be protected.

Claims

1. A single-frame rolling mill coiling reel with an integrated shaft structure, comprising a mandrel (1), characterized in that: The left end of the core shaft (1) is set as a pyramid shaft (2), the core shaft (1) is sleeved with a hollow shaft (3), the pyramid shaft (2) is surrounded by a fan-shaped plate (4), the fan-shaped plate (4) is connected to the pyramid shaft (2) by a connecting key (5), a T-shaped slider (8) is fixedly installed on the right end of the fan-shaped plate (4), the inner walls of the left and right ends of the hollow shaft (3) are provided with copper sleeves (14), the left end of the hollow shaft (3) is provided with a flange (6), and the flange (6) is connected to the hollow shaft (3). An R-angle transition is arranged on the side of the core shaft (3); a slide groove (7) is arranged on the flange (6) corresponding to the slide block (8); an R-angle transition is arranged on the inner corner of the slide groove (7); the slide block (8) is clamped in the slide groove (7) and slides radially along the hollow shaft (3); a guide groove (9) is arranged on the core shaft (1); a guide key (10) is inserted into the hollow shaft (3) at a position corresponding to the guide groove (9); and a guide key (10) is fixed on the outer surface of the hollow shaft (3) at a position corresponding to the guide key (10). A pressure plate (11) is fixedly installed on the right end of the hollow shaft (3); a hydraulic cylinder (12) is fixedly installed on the right end of the core shaft (1); a piston of the hydraulic cylinder (12) is fixed on the right end of the core shaft (1); a rotary joint (13) is arranged on the right end of the hydraulic cylinder (12); an oil passage inside the hollow shaft (3) comprises a first hydraulic oil hole (151), a second hydraulic oil hole (152), a third hydraulic oil hole (153) and a fourth hydraulic oil hole (154); the first hydraulic oil hole (151) is connected to the hollow shaft via a first hydraulic oil hole (151), a second hydraulic oil hole (152), a third hydraulic oil hole (153) and a fourth hydraulic oil hole (154); The left end surface of the shaft (3) extends inwardly, the second hydraulic oil hole (152) extends inwardly from the side surface of the hollow shaft (3), the third hydraulic oil hole (153) extends inwardly from the side surface of one end of the hollow shaft (3) close to the flange (6), and the fourth hydraulic oil hole (154) extends inwardly from the right end surface of the hollow shaft (3), and the opening positions of the first hydraulic oil hole (151) and the second hydraulic oil hole (152) are blocked with taper plugs using a taper drilling method.

2. The single-frame rolling mill coiling reel with integrated shaft structure according to claim 1, characterized in that: The left end of the pyramid shaft (2) is provided with a cone head (16) via a bearing sleeve.

3. The single-frame rolling mill coiling reel with integrated shaft structure according to claim 1, characterized in that: The number of the sector plates (4) is four, one of which is a jaw sector plate (4); the connection key (5) comprises a T key and a dovetail key; the jaw sector plate (4) is slidably connected to the pyramid shaft (2) via the dovetail key, and the remaining three sector plates (4) are slidably connected to the pyramid shaft (2) via the T key.

4. The single-frame rolling mill coiling reel with integrated shaft structure according to claim 1, characterized in that: The copper sleeve (14) is cold-mounted on both ends of the hollow shaft (3) by means of a transition fit.

5. The single-frame rolling mill coiling reel with integrated shaft structure according to claim 1, characterized in that: The thickness of the flange (6) is increased.

Images