Sizing device for hot rolling perforation of steel pipe

Abstract

The utility model relates to the technical field of steel pipe processing, in particular to a sizing device for hot rolling perforation of a steel pipe, which is characterized in that a driving component is started to drive a sizing roller component to rotate, and the sizing roller component further performs sizing operation on the steel pipe; the oiling assembly sprays lubricating oil to the sizing roller assembly, so that the convenience is improved, and the machining efficiency is improved; comprising a frame, mounting plates, strip-shaped openings and bolts, the front end and the rear end of the frame are each provided with two sets of mounting plates, each set of mounting plates is provided with a set of strip-shaped openings, and each set of strip-shaped openings is internally provided with a set of bolts in a penetrating mode. A driving assembly is arranged on the frame, the driving assembly is used for rotating the sizing roller assembly, and the oiling assembly is used for spraying lubricating oil to the sizing roller assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing, in particular to a sizing device for hot rolling and piercing of steel pipes. Background Technique

[0002] Hot-rolled seamless steel pipes are generally pierced with solid billets. During production and processing, the solid billets are generally conveyed to a heating furnace for overall heating first, and then pierced through a mandrel. The pierced hot-rolled seamless steel pipes will be pushed out by a mandrel onto a receiving bracket, and then enter a walking beam reheating furnace for walking beam reheating, followed by sizing, cooling and straightening of the finished product, and finally finished product inspection and warehousing. Among them, a sizing device is required during the sizing process.

[0003] In the prior art, a patent document with the publication number of CN217492136U discloses a sizing device for hot rolling and piercing of steel pipes, including a sizing main body. A sizing roll is arranged in the shell of the sizing main body. A rotating shaft is arranged on the sizing roll. The sizing roll is rotatably arranged in the shell of the sizing main body through the rotating shaft. There are three sizing rolls arranged in a circumferential arrangement. The central position of the three sizing rolls is a central through groove, and a steel pipe is inserted into the central through groove.

[0004] During use, it is found that in the above device, the sizing roll is lubricated by an oil box. When it is necessary to add lubricating oil to the oil box, the above device needs to be shut down for operation, which affects the sizing efficiency of the steel pipe. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a sizing device for hot rolling and piercing of steel pipes with improved processing efficiency.

[0006] A sizing device for hot rolling and piercing of steel pipes of the utility model includes a frame, mounting plates, strip-shaped openings and bolts. Two groups of mounting plates are respectively arranged at the front and rear ends of the frame. A group of strip-shaped openings are respectively arranged on each group of mounting plates. A group of bolts are respectively inserted through each group of strip-shaped openings. It also includes a sizing roll assembly, a driving assembly and an oiling assembly. The sizing roll assembly is arranged inside the frame. The driving assembly is arranged on the frame. The driving assembly is used to drive the sizing roll assembly to rotate. The oiling assembly is used to spray lubricating oil on the sizing roll assembly. The driving assembly is started, so that the driving assembly drives the sizing roll assembly to rotate, and further enables the sizing roll assembly to perform sizing operations on the steel pipe. During the sizing process of the sizing roll assembly on the steel pipe, the oiling assembly sprays lubricating oil on the sizing roll assembly, improving convenience and processing efficiency.

[0007] Preferably, the sizing roll assembly includes a bracket, a rotating shaft, and a sizing roll body. Three pairs of brackets are circumferentially arranged inside the frame. A set of rotating shafts are rotatably arranged in each pair of brackets, and a set of sizing roll bodies are arranged on each set of rotating shafts. The three sets of sizing roll bodies rotate under the cooperation of the driving assembly. The steel pipe passes between the three sets of sizing roll bodies, and the three sets of sizing roll bodies cooperate with each other to perform sizing operations on the steel pipe.

[0008] Preferably, the driving assembly includes a support plate, a motor base, a driving motor, a rotating shaft, and a cone pulley. A support plate is arranged on the frame. The driving motor is installed at the top of the support plate through the motor base. A rotating shaft is arranged at the output end of the driving motor. One end of the rotating shaft is connected to one end of a set of rotating shafts. A set of cone pulleys are arranged on each set of rotating shafts, and the adjacent two sets of cone pulleys are meshed. Start the driving motor, so that the rotating shaft drives a set of rotating shafts to rotate. Since the two sets of cone pulleys on the three sets of rotating shafts are meshed with each other, the three sets of rotating shafts drive the three sets of sizing roll bodies to rotate, and the three sets of sizing roll bodies cooperate with each other to perform sizing on the steel pipe.

[0009] Preferably, the oiling assembly includes an oil tank, an oil pump, an annular pipe, an L-shaped oil spray pipe, and an oil delivery pipe. The oil tank and the oil pump are arranged at the top of the frame. The input end of the oil pump is communicated with the output end of the oil tank. The annular pipe is installed at the rear end of the frame. Three sets of L-shaped oil spray pipes are circumferentially arranged on the inner side wall of the annular pipe. The output end of the oil pump is provided with an oil delivery pipe, and the output end of the oil delivery pipe is communicated with the input end of the annular pipe. Lubricating oil is injected into the oil tank. Start the oil pump, so that the lubricating oil enters the annular pipe through the oil delivery pipe. The lubricating oil entering the annular pipe sprays the outer side walls of the rotating sizing roll bodies through the three sets of annular pipes respectively. When the lubricating oil in the oil tank is used up, the lubricating oil can be directly added to the oil tank without stopping the sizing process of the steel pipe, improving the convenience.

[0010] Preferably, it further includes a fixing frame and a lifting lug. The fixing frame is arranged at the top of the frame, and the lifting lug is arranged at the top of the fixing frame. When the frame needs to be moved, the staff operates the crane to cooperate with the lifting lug, so that the frame is hoisted and moved.

[0011] Preferably, it further includes a handle. The handle is arranged on the outer side wall of the frame. The staff moves the frame through the handle, improving the convenience.

[0012] Preferably, it further includes an observation window. The observation window is arranged on the oil tank. The staff observes the storage situation of the lubricating oil in the oil tank in cooperation with the observation window.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: By starting the driving component, the driving component drives the sizing roll component to rotate, and further enables the sizing roll component to perform sizing operation on the steel pipe. During the process of sizing the steel pipe by the sizing roll component, the oiling component sprays lubricating oil on the sizing roll component, improving convenience and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an isometric structural schematic diagram of the present utility model;

[0015] Figure 2 is a front view structural schematic diagram of the present utility model;

[0016] Figure 3 is an exploded structural schematic diagram of the present utility model;

[0017] Figure 4 is an enlarged structural schematic diagram of structures such as an oil tank and an annular pipe;

[0018] Figure 5 is an enlarged structural schematic diagram of structures such as a fixing frame and a lifting lug.

[0019] Reference numerals in the drawings: 1, frame; 2, mounting plate; 3, strip-shaped opening; 4, bolt; 5, bracket; 6, rotating shaft; 7, sizing roll body; 8, support plate; 9, motor base; 10, driving motor; 11, rotating shaft; 12, bevel wheel; 13, oil tank; 14, oil pump; 15, annular pipe; 16, L-shaped oil injector; 17, oil pipeline; 18, fixing frame; 19, lifting lug; 20, handle; 21, observation window. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0021] Embodiment 1

[0022] As Figure 1 and Figure 2 shown, a sizing device for hot rolling and piercing of steel pipes of the present utility model includes a frame 1, a mounting plate 2, a strip-shaped opening 3, and a bolt 4. Two groups of mounting plates 2 are respectively arranged at the front and rear ends of the frame 1. A group of strip-shaped openings 3 are respectively arranged on each group of mounting plates 2, and a group of bolts 4 are respectively passed through each group of strip-shaped openings 3. The sizing device further includes a sizing roll component, a driving component, and an oiling component. The sizing roll component is arranged inside the frame 1, the driving component is arranged on the frame 1, the driving component is used to drive the sizing roll component to rotate, and the oiling component is used to spray lubricating oil on the sizing roll component;

[0023] As Figure 1 、 Figure 2 and Figure 3 shown, the sizing roll assembly includes a bracket 5, a rotating shaft 6 and a sizing roll body 7. Three pairs of brackets 5 are circumferentially arranged inside the frame 1. A set of rotating shafts 6 are respectively rotatably arranged in each pair of brackets 5, and a set of sizing roll bodies 7 are respectively arranged on each set of rotating shafts 6;

[0024] As Figures 1 to 4 shown, the driving assembly includes a support plate 8, a motor base 9, a driving motor 10, a rotating shaft 11 and a cone pulley 12. The support plate 8 is arranged on the frame 1. The driving motor 10 is installed at the top of the support plate 8 through the motor base 9. The output end of the driving motor 10 is provided with the rotating shaft 11. One end of the rotating shaft 11 is connected to one end of a set of rotating shafts 6. A set of cone pulleys 12 are respectively arranged on each set of rotating shafts 6, and adjacent two sets of cone pulleys 12 are meshed with each other.

[0025] In this embodiment, the driving motor 10 is started, so that the rotating shaft 11 drives a set of rotating shafts 6 to rotate. Since the two sets of cone pulleys 12 on the three sets of rotating shafts 6 are meshed with each other, the three sets of rotating shafts 6 drive the three sets of sizing roll bodies 7 to rotate, and the three sets of sizing roll bodies 7 cooperate with each other to size the steel pipe.

[0026] Embodiment 2

[0027] As Figure 1 and Figure 2 shown, a sizing device for hot rolling and piercing of steel pipes according to the present utility model includes a frame 1, a mounting plate 2, a strip-shaped opening 3 and a bolt 4. Two sets of mounting plates 2 are respectively arranged at the front and rear ends of the frame 1. A set of strip-shaped openings 3 are respectively arranged on each set of mounting plates 2, and a set of bolts 4 are respectively inserted through each set of strip-shaped openings 3. The sizing device further includes a sizing roll assembly, a driving assembly and an oiling assembly. The sizing roll assembly is arranged inside the frame 1, the driving assembly is arranged on the frame 1, the driving assembly is used for driving the sizing roll assembly to rotate, and the oiling assembly is used for spraying lubricating oil on the sizing roll assembly;

[0028] As Figure 1 、 Figure 2 and Figure 3 shown, the sizing roll assembly includes a bracket 5, a rotating shaft 6 and a sizing roll body 7. Three pairs of brackets 5 are circumferentially arranged inside the frame 1. A set of rotating shafts 6 are respectively rotatably arranged in each pair of brackets 5, and a set of sizing roll bodies 7 are respectively arranged on each set of rotating shafts 6;

[0029] As Figures 1 to 4As shown in the figure, the driving component includes a support plate 8, a motor base 9, a driving motor 10, a rotating shaft 11 and a conical pulley 12. A support plate 8 is provided on the frame 1. The driving motor 10 is installed at the top end of the support plate 8 through the motor base 9. A rotating shaft 11 is provided at the output end of the driving motor 10. One end of the rotating shaft 11 is connected to one end of a set of rotating shafts 6. A set of conical pulleys 12 are respectively provided on each set of rotating shafts 6, and adjacent two sets of conical pulleys 12 are meshed with each other;

[0030] As Figure 4 shown in the figure, the oiling component includes an oil tank 13, an oil pump 14, an annular pipe 15, an L-shaped oil spray pipe 16 and an oil delivery pipe 17. The oil tank 13 and the oil pump 14 are provided at the top end of the frame 1. The input end of the oil pump 14 is communicated with the output end of the oil tank 13. The annular pipe 15 is installed at the rear end of the frame 1. Three groups of L-shaped oil spray pipes 16 are circumferentially arranged on the inner side wall of the annular pipe 15. The output end of the oil pump 14 is provided with the oil delivery pipe 17, and the output end of the oil delivery pipe 17 is communicated with the input end of the annular pipe 15;

[0031] It further includes a fixing frame 18, a lifting lug 19, a handle 20 and an observation window 21. The fixing frame 18 is provided at the top end of the frame 1, and the lifting lug 19 is provided at the top end of the fixing frame 18. The handle 20 is provided on the outer side wall of the frame 1, and the observation window 21 is provided on the oil tank 13.

[0032] In this embodiment, the driving motor 10 is started, so that the rotating shaft 11 drives a set of rotating shafts 6 to rotate. Since the two conical pulleys 12 on the three groups of rotating shafts 6 are meshed with each other, the three groups of rotating shafts 6 drive the three sizing roller bodies 7 to rotate. The three sizing roller bodies 7 cooperate with each other to size the steel pipe. Lubricating oil is injected into the interior of the oil tank 13, and the oil pump 14 is started, so that the lubricating oil enters the interior of the annular pipe 15 through the oil delivery pipe 17. The lubricating oil entering the interior of the annular pipe 15 is respectively sprayed on the outer side walls of the rotating sizing roller bodies 7 through the three annular pipes 15. When the lubricating oil in the oil tank 13 is used up, the lubricating oil can be directly added to the interior of the oil tank 13 without stopping the sizing process of the steel pipe.

[0033] The sizing roller body 7, the driving motor 10, the conical pulley 12 and the oil pump 14 of the sizing device for hot rolling and piercing of steel pipes of the present utility model are purchased on the market. Those skilled in the art only need to install and operate according to the attached operation manual, without the need for creative labor of those skilled in the art.

[0034] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A sizing device for hot rolling piercing of steel pipes, comprising a frame (1), mounting plates (2), strip-shaped openings (3) and bolts (4). Two groups of mounting plates (2) are respectively arranged at the front and rear ends of the frame (1). One group of strip-shaped openings (3) is respectively arranged on each group of mounting plates (2). One group of bolts (4) is respectively inserted through each group of strip-shaped openings (3). It is characterized in that, It also includes a sizing roll assembly, a driving assembly, and an oiling assembly. A sizing roll assembly is arranged inside the frame (1), a driving assembly is arranged on the frame (1), the driving assembly is used for rotating the sizing roll assembly, and the oiling assembly is used for spraying lubricating oil on the sizing roll assembly.

2. The sizing device for hot rolling and piercing of steel pipes according to claim 1, wherein, The sizing roll assembly includes a bracket (5), a rotating shaft (6), and a sizing roll body (7). Three pairs of brackets (5) are circumferentially arranged inside the frame (1). A set of rotating shafts (6) is rotatably arranged in each pair of brackets (5), and a set of sizing roll bodies (7) is arranged on each set of rotating shafts (6).

3. The sizing device for hot rolling piercing of steel pipes according to claim 2, characterized in that, The driving assembly includes a support plate (8), a motor base (9), a driving motor (10), a rotating shaft (11), and a cone pulley (12). The support plate (8) is arranged on the frame (1). The driving motor (10) is installed at the top of the support plate (8) through the motor base (9). A rotating shaft (11) is arranged at the output end of the driving motor (10). One end of the rotating shaft (11) is connected to one end of a set of rotating shafts (6). A set of cone pulleys (12) is arranged on each set of rotating shafts (6), and adjacent two sets of cone pulleys (12) are meshed with each other.

4. A sizing device for hot rolling and piercing of steel pipes according to claim 1, characterized in that, The oiling assembly includes an oil tank (13), an oil pump (14), an annular pipe (15), an L-shaped oil spray pipe (16), and an oil delivery pipe (17). The oil tank (13) and the oil pump (14) are arranged at the top of the frame (1). The input end of the oil pump (14) is communicated with the output end of the oil tank (13). The annular pipe (15) is installed at the rear end of the frame (1). Three groups of L-shaped oil spray pipes (16) are circumferentially arranged on the inner side wall of the annular pipe (15). The output end of the oil pump (14) is provided with the oil delivery pipe (17), and the output end of the oil delivery pipe (17) is communicated with the input end of the annular pipe (15).

5. A sizing device for hot rolling and piercing of steel pipes according to claim 1, characterized in that, It also includes a fixing frame (18) and a lifting lug (19). The fixing frame (18) is arranged at the top of the frame (1), and the lifting lug (19) is arranged at the top of the fixing frame (18).

6. A sizing device for hot rolling and piercing of steel pipes according to claim 1, characterized in that, It also includes a handle (20). The handle (20) is arranged on the outer side wall of the frame (1).

7. A sizing device for hot rolling piercing of steel pipes according to claim 4, characterized in that, It also includes an observation window (21). The observation window (21) is arranged on the oil tank (13).

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