Reciprocating type reducing pipe mill for seamless steel pipe
By designing a seamless steel pipe reciprocating pipe reversing and reducing diameter of pipe rolling machine with a fixed frame and a removable rolling mechanism, the roller distance is automatically adjusted by pressing the oil cylinder and locking the oil cylinder, the problem of determining the diameter of pipe reduction requirements is solved in different waste pipe specifications. , reduces equipment complexity and production costs and improves production efficiency.
Patent Information
- Application Number
- CN202421191859.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-05-29
AI Technical Summary
In the existing seamless steel pipe production lines, the fixed diameter reduction requirements for each waste pipe specification are different, resulting in a large number of replaceable rolling mechanisms that must be equipped, resulting in complex structures, high equipment investment and high production costs.
Design a seamless steel pipe reciprocating pipe rolling machine, adopting a fixed frame and a removable rolling mechanism, control the roller distance by pressing the oil cylinder and locking the oil cylinder, and realizes automatic adjustments in combination with a speed reduction motor and encoder to meet different wastes. Requirements for fixed diameter reduction of pipe specifications.
The fixed-drain reduction rolling of different specifications of waste pipes has been achieved, reducing equipment complexity and investment, and improving production efficiency and cost-effectiveness.
Smart Images
Figure CN222359009U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of seamless steel pipe processing, in particular to a seamless steel pipe reciprocating reducing pipe rolling machine. Background Art
[0002] In the seamless steel pipe production line, the steel pipe produced by the pipe rolling mill is called a rough pipe. The rough pipe is transported to the sizing mill and rolled into the final finished steel pipe. The sizing mill is mainly composed of a fixed frame and a roller mechanism. In some production lines, the rough pipe needs to be reheated or supplemented with heat before being transported to the sizing mill to ensure that the temperature of the rough pipe meets the requirements of the sizing mill for deformation rolling.
[0003] However, different rough pipe production specifications have different sizing and reducing requirements, so each rough pipe specification must be equipped with a different roller mechanism or a replaceable roller mechanism, which results in the seamless steel pipe production line having to be equipped with a large number of replaceable roller mechanisms. Therefore, the existing sizing and reducing mill has the disadvantages of complex structure, high equipment investment, and high production cost. Utility Model Content
[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a seamless steel pipe reciprocating reducing pipe rolling mill that can meet different fixed reducing requirements.
[0005] In order to achieve the above-mentioned object, the utility model is implemented by the following technical scheme: a seamless steel pipe reciprocating reducing pipe mill, comprising a fixed frame, the fixed frame having a mounting position, and a roller mechanism is arranged in the mounting position;
[0006] The rolling mechanism includes a roller frame, a guide rail and two roller assemblies, the roller frame is connected to the fixed frame, the guide rail is fixedly installed on the roller frame, the two roller assemblies are respectively arranged on both sides of the roller frame, the roller assembly includes a bearing seat, a roller body, a reduction motor and a pressing cylinder, the bearing seat is arranged on the guide rail and is slidingly connected to the guide rail, the roller body is arranged on the bearing seat and is rotatably connected to the bearing seat, the reduction motor is arranged on the outer side of the fixed frame, the output shaft of the reduction motor is connected to the roller body through a universal coupling, and the pressing cylinder is used to control the movement of the bearing seat on the guide rail.
[0007] Furthermore, the roller assembly further comprises a locking oil cylinder, a cylinder body of the locking oil cylinder is fixedly connected to the roller frame, and a T-shaped head is fixedly installed on the piston rod of the locking oil cylinder;
[0008] The bearing seat is provided with a T-shaped slot adapted to the T-shaped head.
[0009] Furthermore, the roller assembly also includes a depression amount detector and a locking detector. The depression amount detector is used to measure the real-time position of the piston rod of the depression cylinder, and the locking detector is used to measure the real-time position of the piston rod of the locking cylinder.
[0010] Furthermore, encoders are fixedly mounted on the tail ends of the output shafts of the two reduction motors.
[0011] Furthermore, the roller frame is detachably connected to the fixed frame;
[0012] A replacement mechanism is also provided on the outer side of the fixed frame, and the replacement mechanism includes a track, an electric trolley, a turning frame and a turning cylinder. The track extends laterally and is fixedly connected to the fixed frame. The electric trolley is arranged on the track and can travel on the track. The first end of the turning frame is rotatably connected to the electric trolley, and the second end of the turning frame is a free end. The rolling roller mechanism is placed on the turning frame, and the turning cylinder is used to control the second end of the turning frame to turn up and down.
[0013] Furthermore, the number of the installation positions is three, and the three installation positions are alternately arranged left and right at equal intervals in the horizontal direction;
[0014] The replacement mechanisms are respectively arranged on both sides of the fixed frame.
[0015] Furthermore, the angle between the axis of the installation position and the horizontal plane is 45°.
[0016] Beneficial effects of the utility model: the utility model provides a seamless steel pipe reciprocating reducing pipe rolling machine. After the depression cylinders in the two roller assemblies are started, the corresponding bearing seats will move, thereby causing the roller spacing between the two roller bodies to change. When the roller spacing reaches the preset value, the depression cylinders stop working and keep the position unchanged. Therefore, the utility model can meet the fixed reducing requirements of rough pipe production with different specifications. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model when used in conjunction with each other;
[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model;
[0019] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;
[0020] Figure 4 This is a front view structural schematic diagram of the utility model;
[0021] Figure 5 It is a side view structural schematic diagram of the utility model;
[0022] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure along the AA direction;
[0023] Figure 7 for Figure 6 The enlarged structural diagram of the middle A part;
[0024] Figure 8 for Figure 6 Schematic diagram of the structure after the middle turning frame is turned over;
[0025] Fig. 9 It is a schematic diagram of the local structure of the roller mechanism.
[0026] Figure markings: 10-front lifting conveyor roller, 20-rear lifting roller, 30-fixed frame, 31-mounting position, 40-roller mechanism, 41-roller frame, 50-roller assembly, 51-bearing seat, 52-roller body, 53-reduction motor, 531-universal coupling, 54-pressing cylinder, 55-locking cylinder, 56-T-slot, 57-pressing amount detector, 58-locking detector, 59-encoder, 60-replacement mechanism, 61-track, 62-electric trolley, 63-turning frame, 64-turning cylinder, 70-waste pipe. DETAILED DESCRIPTION
[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0028] In this application, unless otherwise clearly specified and limited, the terms "connection" and "fixation" 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0029] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "horizontal", "top", "bottom", "up", "down", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.
[0031] like Figure 1-Figure 9 As shown, the utility model provides a seamless steel pipe reciprocating reducing tube rolling mill, which is used in conjunction with a front lifting conveying roller 10 and a rear lifting roller 20, and includes a fixed frame 30, on which is a mounting position 31, in which a roller mechanism 40 is arranged.
[0032] The roller mechanism 40 includes a roller frame 41, a guide rail and two roller wheel assemblies 50. The roller frame 41 is connected to the fixed frame 30, and the roller frame 41 is adapted to the mounting position 31. The guide rail is fixedly mounted on the roller frame 41.
[0033] Two roller assemblies 50 are respectively arranged on both sides of the roller frame 41, and the roller assembly 50 includes a bearing seat 51, a roller body 52, a reduction motor 53 and a pressing cylinder 54. The bearing seat 51 is arranged on the guide rail and is slidably connected to the guide rail. The roller body 52 is arranged on the bearing seat 51 and is rotatably connected to the bearing seat 51. The reduction motor 53 is arranged on the outer side of the fixed frame 30, and the output shaft of the reduction motor 53 is connected to the roller body 52 through a universal coupling 531. The reduction motor 53 is electrically connected to the electrical system to provide power for the rotation of the roller body 52. The cylinder body of the pressing cylinder 54 is fixedly connected to the roller frame 41, and the piston rod of the pressing cylinder 54 is fixedly connected to the bearing seat 51. The pressing cylinder 54 is used to control the movement of the bearing seat 51 on the guide rail, and the pressing cylinder 54 is electrically connected to the electrical system.
[0034] The specific working process of the utility model is as follows: first, the electrical system controls the pressing cylinders 54 in the two roller assemblies 50 to start at the same time, and the piston rod of the pressing cylinder 54 is extended, thereby driving the corresponding bearing seat 51 to move, and the roller gap between the two roller bodies 52 will gradually decrease. When the roller gap reaches the preset value, the pressing cylinder 54 stops working and keeps the position unchanged. During the process of reducing the roller gap, the two roller bodies 52 will perform fixed diameter reduction rolling on the rough pipe 70. Then, the electrical system controls the reduction motors 53 in the two roller assemblies 50 to start at the same time, and the reduction motors 53 drive the corresponding roller bodies 52 to rotate through the universal coupling 531, and the rough pipe 70 will move forward, thereby performing a fixed diameter reduction rolling operation on the entire rough pipe 70.
[0035] Operation principle: The rough pipe 70 rolled by the tube rolling mill is transported to the utility model through the front lifting conveyor roller 10, and is sent from the tail end of the fixed frame 30 to the rear lifting conveyor roller 20 after the sizing rolling operation of the utility model. If the sizing reduction amount of the rough pipe 70 is large, when the tail end of the rough pipe 70 is sent out of the fixed frame 30, the rear lifting conveyor roller 20 reverses and feeds the rough pipe 70 into the fixed frame 30 in reverse. At this time, the utility model has used the idle time to complete the roller gap adjustment again, and the rough pipe 70 is sent to the utility model for the second time. When the head end of the rough pipe 70 is sent out of the fixed frame 30, the front lifting conveyor roller 10 reverses and feeds the rough pipe 70 into the fixed frame 30 again in reverse. The sizing rolling operation is repeated in this way, and finally a finished steel pipe with an outer diameter and wall thickness that meet the requirements is obtained, and it is transported to the next process through the rear lifting conveyor roller 20.
[0036] When the present invention reciprocates to perform the reducing rolling operation on the rough pipe 70, in order to adapt to the rough pipe 70 of different diameters, the roller spacing adjustment, the adjustment of the height of the front lifting conveyor roller table 10 and the rear lifting conveyor roller table 20 are all controlled by the automatic program of the electrification system.
[0037] In one embodiment, the roller assembly 50 further includes a locking cylinder 55, the cylinder body of the locking cylinder 55 is fixedly connected to the roller frame 41, a T-head is fixedly installed on the piston rod of the locking cylinder 55, and the locking cylinder 55 is electrically connected to the electrification system.
[0038] The bearing seat 51 is provided with a T-slot 56 adapted to the T-head.
[0039] After the oil cylinder 54 is pressed into place, the electrical system controls the piston rod of the locking oil cylinder 55 to extend, and the T-shaped head presses the corresponding T-shaped slot 56, thereby locking the roller body 52 to prevent the roller gap from changing during the rolling process.
[0040] In one embodiment, the roller assembly 50 further includes a depression amount detector 57 and a locking detector 58. The depression amount detector 57 is electrically connected to the electrical system and is used to measure the real-time position of the piston rod of the depression cylinder 54. The locking detector 58 is electrically connected to the electrical system and is used to measure the real-time position of the piston rod of the locking cylinder 55.
[0041] The pressing amount detector 57 and the locking detector 58 are both high-precision linear displacement sensors. The real-time position of the piston rod of the pressing oil cylinder 54 and the real-time position of the piston rod of the locking oil cylinder 55 are accurately measured by the pressing amount detector 57 and the locking detector 58 respectively and fed back to the electrical system for reliable control.
[0042] In one embodiment, encoders 59 are fixedly mounted on the tail ends of the output shafts of the two reduction motors 53 .
[0043] The two encoders 59 perform a real-time closed-loop comparison to control the rotation speeds of the two roller bodies 52 to be consistent.
[0044] In one embodiment, the roller frame 41 is detachably connected to the fixed frame 30 .
[0045] A replacement mechanism 60 is also provided on the outside of the fixed frame 30, and the replacement mechanism 60 includes a track 61, an electric trolley 62, a flip frame 63 and a flip cylinder 64. The track 61 extends in the transverse direction and is fixedly connected to the fixed frame 30. The electric trolley 62 is arranged on the track 61 and can travel on the track 61. The electric trolley 62 is electrically connected to the electrical system. The first end of the flip frame 63 is rotatably connected to the electric trolley 62, and the second end of the flip frame 63 is a free end. The rolling mechanism 40 is placed on the flip frame 63. The cylinder body of the flip cylinder 64 is hinged to the electric trolley 62, and the piston rod of the flip cylinder 64 is hinged to the second end of the flip frame 63. The flip cylinder 64 is used to control the second end of the flip frame 63 to flip up and down.
[0046] Preferably, each roller assembly 50 comprises two bearing seats 51. Each bearing seat 51 is cooperated by a pressing cylinder 54, a locking cylinder 55, a pressing amount detector 57 and a locking detector 58.
[0047] When the roller mechanism 40 needs to be replaced and repaired, the electrical system controls the turning cylinder 64 to start, and the turning cylinder 64 drives the turning frame 63 to rotate around its first end to a certain angle until the top of the turning frame 63 is aligned with the bottom of the installation position 31, and then the roller mechanism 40 is pulled out from the installation position 31. When the roller mechanism 40 is pulled out to the right position, the turning frame 63 is reset. At this time, the roller mechanism 40 is disassembled and can be hoisted to other locations by a crane or directly stored here for maintenance. When the roller mechanism 40 needs to be reinstalled, the reinstallation steps are opposite to the disassembly steps, which will not be repeated here.
[0048] Preferably, a plurality of electric trolleys 62 can be arranged on the track 61 for backup.
[0049] In one embodiment, there are three mounting positions 31, which are alternately arranged at equal intervals in the horizontal direction, and the opening direction of the mounting positions 31 faces upward. A rolling mechanism 40 is arranged in each mounting position 31, which can improve the efficiency of the fixed diameter reduction rolling operation of the rough pipe 70.
[0050] Replacement mechanisms 60 are respectively provided on both sides of the fixed frame 30 .
[0051] In one embodiment, the angle between the axis of the mounting position 31 and the horizontal plane is 45°. When the roller mechanism 40 needs to be replaced or repaired, the electrical system controls the turning cylinder 64 to start, and the turning cylinder 64 drives the turning frame 63 to rotate 45° around its first end, so that the roller mechanism 40 can be quickly taken out.
[0052] The replacement of the roller mechanism 40 and the adjustment of the roller distance are the main features of the utility model. In order to accurately understand the specific process, a detailed description is now given:
[0053] First, replacement and adjustment of a single rolling mechanism 40: after all the rolling mechanisms 40 are installed at the assembly site, the roll pitch and state are the same, that is, the roll pitch is at the maximum position, the three mounting positions 31 of the fixed frame 30 are not installed with the rolling mechanisms 40, and the pressing cylinder 54 and the locking cylinder 55 are in the initial position under the control of the pressing amount detector 57 and the locking detector 58 respectively, that is, the pressing cylinder 54 retreats to the last position, and the locking cylinder 55 retreats to the last position.
[0054] When the roller mechanism 40 is turned 45° along the turning frame 63 and installed in the corresponding installation position 31, the T-shaped heads on the four locking cylinders 55 of each roller mechanism 40 are just installed in the T-shaped slots 56 on the four bearing seats 51 of the roller mechanism 40. After the roller mechanism 40 is installed in place, the piston rods of the four groups of pressing cylinders 54 extend and push the two roller bodies 52 to approach each other. At the same time, the T-shaped heads on the four groups of locking cylinders 55 move and extend in coordination under the drive of the locking cylinders 55. After the roller spacing of the roller mechanism 40 reaches the preset value, the pressing cylinders 54 stop working and keep the position unchanged. The T-shaped heads on the locking cylinders 55 press the T-shaped slots 56 on the corresponding bearing seats 51 under the drive of the locking cylinders 55. The roller mechanism 40 is locked and maintained, and the roller mechanism 40 is installed. The removal process of the roller mechanism 40 is opposite to the installation process, which will not be repeated here.
[0055] Second, dynamic adjustment of the three roller mechanisms 40 during the sizing reduction rolling operation: the roller spacing of the three roller mechanisms 40 in the utility model will be adjusted to the initial waiting state and maintained in turn according to the outer diameter of the rough pipe 70 before the first sizing reduction rolling operation. After the first fixed-reduction rolling operation is completed, the roller spacing of the three roller mechanisms 40 is quickly adjusted to adapt to the next rolling of the same rough pipe 70. In principle, the same rough pipe 70 needs to be reciprocated and rolled several times according to the fixed reduction amount, so the roller spacing of each roller mechanism 40 needs to be adjusted several times, that is, when the rough pipe 70 is rolled in the forward direction, the tail end of the rough pipe 70 leaves any roller mechanism 40 or when the head end of the rough pipe 70 leaves any roller mechanism 40 during reverse rolling, the roller diameter of this roller mechanism 40 is quickly adjusted, that is, the locking cylinder 55 is first quickly released to a certain value, and then the pressing cylinder 54 is quickly changed to a preset value, and the two roller bodies 52 are pushed to move, and finally the locking cylinder 55 is locked, and the roller spacing adjustment of this roller mechanism 40 is completed, waiting for the next rolling of the rough pipe 70. The three rolling mechanisms 40 are controlled by the electrical system and adjusted in sequence according to this rule until the rough pipe 70 is rolled to the required specifications, and then the three rolling mechanisms 40 return to the initial waiting state.
[0056] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.
[0057] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A seamless steel pipe reciprocating reducing mill, characterized in that: It comprises a fixed frame, the fixed frame has a mounting position, and a roller mechanism is arranged in the mounting position; The rolling mechanism includes a roller frame, a guide rail and two roller assemblies, the roller frame is connected to the fixed frame, the guide rail is fixedly installed on the roller frame, the two roller assemblies are respectively arranged on both sides of the roller frame, the roller assembly includes a bearing seat, a roller body, a reduction motor and a pressing cylinder, the bearing seat is arranged on the guide rail and is slidingly connected to the guide rail, the roller body is arranged on the bearing seat and is rotatably connected to the bearing seat, the reduction motor is arranged on the outer side of the fixed frame, the output shaft of the reduction motor is connected to the roller body through a universal coupling, and the pressing cylinder is used to control the movement of the bearing seat on the guide rail.
2. A seamless steel pipe reciprocating reducing mill according to claim 1, characterized in that: The roller assembly further comprises a locking oil cylinder, the cylinder body of the locking oil cylinder is fixedly connected to the roller frame, and a T-shaped head is fixedly mounted on the piston rod of the locking oil cylinder; The bearing seat is provided with a T-shaped groove adapted to the T-shaped head.
3. A seamless steel pipe reciprocating reducing mill according to claim 2, characterized in that: The roller assembly also includes a depression detector and a locking detector. The depression detector is used to measure the real-time position of the piston rod of the depression cylinder, and the locking detector is used to measure the real-time position of the piston rod of the locking cylinder.
4. A seamless steel pipe reciprocating reducing mill according to claim 1, characterized in that: Encoders are fixedly mounted on the tail ends of the output shafts of the two reduction motors.
5. The seamless steel pipe reciprocating reducing mill according to claim 1, characterized in that: The roller frame is detachably connected to the fixed frame; A replacement mechanism is also provided on the outer side of the fixed frame, and the replacement mechanism includes a track, an electric trolley, a turning frame and a turning cylinder. The track extends laterally and is fixedly connected to the fixed frame. The electric trolley is arranged on the track and can travel on the track. The first end of the turning frame is rotatably connected to the electric trolley, and the second end of the turning frame is a free end. The rolling roller mechanism is placed on the turning frame, and the turning cylinder is used to control the second end of the turning frame to turn up and down.
6. A seamless steel pipe reciprocating reducing mill according to claim 5, characterized in that: The number of the installation positions is three, and the three installation positions are alternately arranged left and right in a lateral direction at equal intervals; The replacement mechanisms are respectively arranged on both sides of the fixed frame.
7. A seamless steel pipe reciprocating reducing mill according to claim 6, characterized in that: The angle between the axis of the installation position and the horizontal plane is 45°.