Steel throwing and transferring device of annular furnace

Abstract

The utility model belongs to the technical field of seamless steel pipe production equipment, and particularly relates to an annular furnace steel throwing and transferring device which comprises steel throwing racks, a conveying roller way is arranged on one side of the steel throwing racks arranged side by side in parallel, and a plurality of transition racks are arranged between the steel throwing racks and the conveying roller way. All the transition racks are also arranged in parallel, one end of each transition rack extends into the blanking gap between the two adjacent steel throwing racks, and the other end of each transition rack extends to the position above the conveying roller way. The table top formed by arranging the side edges of the rack plates on the steel throwing rack at intervals replaces a whole bearing plane in the prior art, oxide skin vibrated off from the blank directly falls off through the gaps between the rack plates, and the situation that the stop position of the blank after smashing and the efficiency of conveying the blank to a conveying roller way are affected due to excessive accumulation of the oxide skin is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of seamless steel pipe production equipment, and in particular relates to a ring furnace steel throwing and transferring device. Background Art

[0002] On the hot-rolled seamless steel pipe production line, after the billet is heated to the set temperature in the ring furnace, it will be taken out by the clamp and directly hit on the steel throwing table. This operation will shake off the oxide scale on the surface of the billet. At the same time, it will be rolled into the pre-piercing transmission roller through the inclined arm bar and sent to the subsequent perforation station by the roller.

[0003] Patent CN107695112A discloses a device for removing steel billets on a rolling mill discharge roller, which belongs to the technical field of steel rolling equipment and is used for removing steel billets on a rolling mill discharge roller. The technical scheme is as follows: the oil cylinder base and the steel throwing stand are located on the same side of the roller, the oil cylinder base is below the steel throwing stand, the cylinder body of the oil cylinder is connected to the oil cylinder base through a rotating shaft, the connecting rod shaft seat is fixedly installed on the steel throwing stand, the connecting rod is installed on the connecting rod shaft seat through the connecting rod rotating shaft, one end of the connecting rod is rotatably connected to the front end of the oil cylinder push rod, the other end of the connecting rod is located between the two rollers of the roller, and the upper surface of the connecting rod is lower than the roller surface. The invention has the characteristics of scientific and reasonable technical scheme, simple structure, strong practicality, and not easy to damage, prolongs the service life of the equipment, can quickly and effectively remove the steel billet, reduces the damage to the steel billet caused by operation, reduces the production cost, and has broad application prospects and huge economic benefits in the production of rolling mills.

[0004] In the above scheme, a mechanism for transferring steel billets is designed, but the scheme ignores the fact that the oxide scale that falls off when the heated steel billet hits the steel-throwing table is left on the table. The oxide scale that accumulates after cooling will affect the position where the subsequent steel billet falls, and may cause the steel billet to fall from the table. If the steel-throwing table also includes a transportation function, the accumulated oxide scale will also hinder the movement of the steel billet. Utility Model Content

[0005] The utility model aims at the above problems and provides a ring furnace steel-swinging transfer device which can solve the above technical problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The ring furnace steel throwing transfer device includes a steel throwing platform, a transmission roller is arranged in parallel on one side of a plurality of parallel steel throwing platforms, a plurality of transition platforms are arranged between the steel throwing platforms and the transmission roller, each of the transition platforms is also arranged in parallel and one end of each of the transition platforms extends into the blanking gap between two adjacent steel throwing platforms, and the other end of the transition platform extends to above the transmission roller.

[0008] In the annular furnace steel-swinging transfer device, the steel-swinging frame includes a frame plate and a support seat, one side surface of the frame plate is provided with a collision contact surface, and the collision contact surface is connected to the support seat on the opposite side surface.

[0009] In the annular furnace steel transfer device, the two support seats with different heights are respectively connected to the ends of the platform plate, so that the collision contact surface is inclined toward the transmission roller.

[0010] In the annular furnace steel transfer device, the connection points between the two support seats and the platform plate have the same height, and the collision contact surface is inclined toward the transmission roller.

[0011] In the annular furnace steel transfer device, the edge of the collision contact surface is provided with a protective fillet.

[0012] In the annular furnace steel transfer device, one end of the transition platform close to the platform plate is lower than the lowest point of the collision contact surface.

[0013] In the annular furnace steel transfer device, the transition platform includes a platform rod and a fixed seat, the fixed seat is connected to the rod body of the platform rod, so that one end of the platform rod extends above the transmission roller, and the other end of the platform rod extends into the blanking gap.

[0014] In the annular furnace steel-swinging and transferring device, the stand rod is divided into a long rod portion close to the steel-swinging stand and a short rod portion close to the transmission roller, with the connection with the fixed seat as the boundary.

[0015] In the annular furnace steel transfer device, each driving roller in the transmission roller is arranged at the same angle to be tilted relative to the transport direction of the transmission roller.

[0016] In the annular furnace steel transfer device, the driving roller is provided with an adjusting frame connected to the roller shaft, and the adjusting frame is provided with a rotating shaft so that the driving roller can rotate horizontally around the rotating shaft.

[0017] The advantages of the utility model are:

[0018] The table top composed of the side gaps of the table plates on the swing steel table replaces the previous entire receiving plane. The gaps between the table plates are used to allow the oxide scale shaken off the blank to fall directly, avoiding excessive accumulation of oxide scale that affects the staying position of the blank after being smashed and the efficiency of its transportation to the transmission roller.

[0019] A transition stand is arranged between the swing stand and the transmission roller. The transition stand has a long suspended stand rod, which allows the blank to vibrate slightly when rolling on the elastically swingable stand rod, thereby further shaking off the oxide scale on the blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the steel swinging stand of the utility model.

[0022] Figure 3 This is a schematic diagram of the transition stand structure of the utility model.

[0023] Figure 4 This is a schematic diagram of the transmission roller structure of the utility model.

[0024] In the figure, there are a steel swinging stand 1, a stand plate 11, a support seat 12, a collision contact surface 13, a transmission roller 2, an adjustment frame 21, a rotating shaft 22, a transition stand 3, a stand rod 31, a fixing seat 32, and a blanking gap 4. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the utility model and the accompanying drawings to further describe the technical solution of the utility model, but the utility model is not limited to these embodiments.

[0026] Example 1

[0027] like Figure 1-Figure 4 As shown, the annular furnace steel throwing and transferring device includes a steel throwing platform 1, and a transmission roller 2 is arranged in parallel on one side of a plurality of parallel steel throwing platforms 1, and a plurality of transition platforms 3 are arranged between the steel throwing platforms 1 and the transmission roller 2. Each transition platform 3 is also arranged in parallel and one end of each transition platform 3 extends into the blanking gap 4 between two adjacent steel throwing platforms 1, and the other end of the transition platform 3 extends to above the transmission roller 2.

[0028] That is, a table top composed of a plurality of independent swing-steel stands 1 arranged with gaps between each other replaces the previous entire supporting plane, and the gaps between each swing-steel stand 1 are utilized to allow the oxide scale shaken off the blank to fall directly, thereby avoiding excessive accumulation of the oxide scale that affects the staying position of the blank after being smashed and hinders the efficiency of transportation to the transmission roller.

[0029] Moreover, when the steel billet falls onto the transition platform 3, since the supporting contact points of the transition platform 3 and the swing-steel platform 1 on the steel billet are staggered, the original contact position of the steel billet with the swing-steel platform 1 can be exposed, so that the oxide scale that may be blocked by the swing-steel platform 1 and not fall off can fall off when it reaches the transition platform 3.

[0030] In this embodiment, the steel throwing platform 1 includes a platform plate 11 and a support seat 12. A collision contact surface 13 is provided on one side of the platform plate 11, and the collision contact surface 13 is connected to the support seat 12 on the opposite side.

[0031] The steel throwing stand 1 is a thin steel plate fixed upright on a support seat 12, and the upper end surfaces of the steel plates on each steel throwing stand 1 are maintained on the same horizontal plane, supporting the steel billet through a smaller contact surface.

[0032] Usually, the smaller side of the steel plate is used as the collision contact surface 13 and fixed on the support seat 12 facing upward, and a gap is separated between the collision contact surfaces 13 to prevent the steel billet from being skewed when placed, so that the steel billet can be placed stably while allowing the oxide scale to fall from the gap.

[0033] Preferably, two support seats 12 of different heights are respectively connected to the ends of the platform plate 11 so that the collision contact surface 13 is inclined toward the conveying roller 2 .

[0034] Because the steel swinging platform 1 also has the function of transporting the steel billet to the conveying roller 2, the collision contact surface 13 needs to be set with a certain inclination so that the columnar steel billet can naturally roll toward the conveying roller 2. The inclination is generated by the two support seats 12 supporting the platform plate 11, so that the support seats 12 have a height difference when they are set to form an inclined surface.

[0035] The support seats 12 are in the form of two axially sliding sleeves, which are adjusted and fixed by bolt rods and holes, so as to achieve the height difference between the two support seats 12.

[0036] Preferably, the edge of the collision contact surface 13 is provided with a protective fillet or chamfer.

[0037] In order to prevent the steel billet from colliding and scratching with the sharp edge of the platform plate 11 during the falling and rolling, the edge of the collision contact surface 13 is polished into a rounded corner or chamfered corner to ensure that the surface of the steel billet is not damaged. At the same time, the rounded corner or chamfered corner of the edge enlarges the blanking gap 4 in disguise and is also conducive to the falling of the oxide scale.

[0038] Preferably, one end of the transition platform 3 close to the platform plate 11 is lower than the lowest point of the collision contact surface 13 .

[0039] Making the transition platform 3 lower than the collision contact surface 13 can create a certain drop in the tracks of the two. When the billet rolls from the steel-throwing platform 1 to the transition platform 3, it is equivalent to implementing a second throw to further remove the oxide scale remaining on the billet.

[0040] Of course, the rolling tracks of the transition stand 3 and the steel-throwing stand 1 can also be connected, and the transition stand 3 can be set to a gentler inclination angle than the steel-throwing stand 1. When switching to the transition stand 3, it can also impact the steel billet to shake off the oxide scale.

[0041] In this embodiment, the transition stand 3 includes a stand rod 31 and a fixed seat 32. The fixed seat 32 is connected to the rod body of the stand rod 31, so that one end of the stand rod 31 extends above the transmission roller 2, and the other end of the stand rod 31 extends into the blanking gap 4.

[0042] The transition stand 3 has only one fixed seat 32 connected to the rod body for support, so that the stand rods 31 suspended at both ends have a certain elasticity, so that the accelerated steel billet after rolling in the hole has a buffering effect when it lands on the stand rod 31, avoiding deformation of the steel billet surface caused by excessive impact.

[0043] Preferably, the stand rod 31 is divided into a long rod portion close to the steel swing stand 1 and a short rod portion close to the transmission roller 2 at the connection with the fixing seat 32 .

[0044] The long rod part close to the side of the steel-throwing platform 1 needs to receive the steel billet. Usually, there is a height difference between the steel-throwing platform 1 and the long rod part so that the steel billet can be thrown down again to further remove the oxide scale. Because of its suspended and long force arm characteristics, the long rod part will swing elastically when the steel billet falls, which can avoid rigid impact of the steel billet and damage to the surface. The vibration generated by the elastic swing can shake off the remaining oxide scale.

[0045] On the side of the short rod portion, the steel billet needs to be accurately and stably introduced into the conveying roller 2 , so the stand rod 31 is made shorter and more rigid, so that the steel billet can be rolled stably and unnecessary vibration can be avoided to affect the position of the steel billet falling into the conveying roller 2 .

[0046] In this embodiment, each driving roller in the conveying roller conveyor 2 is arranged to be tilted at the same angle to the conveying direction of the conveying roller conveyor 2 .

[0047] The driving rollers are still arranged according to the transmission roller 2, but the roller axes of the driving rollers are deflected at the same angle. When the rollers are of a concave roller surface type, the cylindrical billet can not only move with the transmission roller 2, but also rotate about its axis during movement, so that the arc surface of the billet can be evenly contacted with the roller surface, preventing the billet from being deformed due to long-term unilateral contact under the action of gravity.

[0048] Preferably, the driving roller is provided with an adjusting frame 21 connected to the roller shaft, and the adjusting frame 21 is provided with a rotating shaft 22 so that the driving roller can rotate horizontally around the rotating shaft.

[0049] A conveying roller 2 needs to adapt to steel billets of different diameters, and the deflection angle of its driving roller also needs to be adjusted. In order to facilitate the adjustment of each driving roller, an adjustment frame 21 is installed at both ends of the rotating shaft of each driving roller, and a rotating shaft connected to the reference plane is vertically installed on one side of the adjustment frame 21, so that the driving roller can adjust the deflection angle by relying on the rotating shaft.

[0050] Example 2

[0051] On the basis of Example 1, the arrangement of the steel swinging stand 1 is changed, the connection between the two support seats 12 and the stand plate 11 has the same height, and the collision contact surface 13 is inclined toward the transmission roller 2.

[0052] That is, a right-angled trapezoidal platform plate 11 is used, the right-angled sides are fixed on two support seats 12 of the same height, and the opposite oblique sides are used as collision contact surfaces 13 to form an inclined surface. Compared with the adjustable support seat 12 in Example 1, although the convenience of adjustment is lost, the support seats 12 of the same height bring better stability, so that the steel throwing platform 1 can withstand the impact of larger-sized steel billets.

[0053] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A ring furnace steel-throwing transfer device, comprising a steel-throwing stand (1), characterized in that: A transmission roller (2) is arranged in parallel on one side of a plurality of parallel steel-throwing racks (1), and a plurality of transition racks (3) are arranged between the steel-throwing racks (1) and the transmission roller (2). Each of the transition racks (3) is also arranged in parallel, and one end of each of the transition racks (3) extends into the blanking gap (4) between two adjacent steel-throwing racks (1), and the other end of the transition rack (3) extends to above the transmission roller (2).

2. The annular furnace steel transfer device according to claim 1 is characterized in that: The steel throwing platform (1) comprises a platform plate (11) and a support seat (12); one side surface of the platform plate (11) is provided with a collision contact surface (13); and the collision contact surface (13) is connected to the support seat (12) at the opposite side surface.

3. The annular furnace steel transfer device according to claim 2, characterized in that: The two support seats (12) of different heights are respectively connected to the ends of the platform plate (11), so that the collision contact surface (13) is inclined toward the transmission roller (2).

4. The annular furnace steel transfer device according to claim 2, characterized in that: The connection points between the two support seats (12) and the platform plate (11) are at the same height, and the collision contact surface (13) is arranged to be inclined toward the transmission roller (2).

5. The annular furnace steel transfer device according to claim 3 or 4, characterized in that: The edge of the collision contact surface (13) is provided with a protective rounded corner.

6. The annular furnace steel transfer device according to claim 3 or 4, characterized in that: One end of the transition platform (3) close to the platform plate (11) is lower than the lowest point of the collision contact surface (13).

7. The annular furnace steel transfer device according to claim 1, characterized in that: The transition stand (3) comprises a stand rod (31) and a fixed seat (32), wherein the fixed seat (32) is connected to the rod body of the stand rod (31), so that one end of the stand rod (31) extends above the transmission roller (2), and the other end of the stand rod (31) extends into the blanking gap (4).

8. The annular furnace steel transfer device according to claim 7, characterized in that: The stand rod (31) is divided into a long rod portion close to the steel swing stand (1) and a short rod portion close to the transmission roller (2) at the connection with the fixing seat (32).

9. The annular furnace steel transfer device according to claim 1, characterized in that: Each driving roller in the transmission roller conveyor (2) is arranged at the same angle to be tilted relative to the transport direction of the transmission roller conveyor (2).

10. The annular furnace steel transfer device according to claim 9, characterized in that: The driving roller is provided with an adjustment frame (21) connected to the roller shaft, and the adjustment frame (21) is provided with a rotating shaft so that the driving roller can rotate horizontally around the rotating shaft.

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