Steel pipe straightening machine

Abstract

The utility model belongs to the technical field of steel pipe production, and particularly relates to a steel pipe straightening machine which comprises a machine base. At least two groups of compression roller assemblies are arranged up and down, a pipe passing channel is arranged between the upper and lower compression roller assemblies, and the pipe passing channel allows a steel pipe to pass through; the driving assembly is used for driving the pressing roller assembly to rotate, straightening the steel pipe and driving the steel pipe to be conveyed along the pipe passing channel. The supporting structure is arranged in the pipe passing channel and used for preventing the steel pipe from being pressed to sink inwards and deform. A steel pipe is fed into the pipe passing channel between the upper pressing roller assembly and the lower pressing roller assembly, the driving assembly enables the pressing roller assemblies to rotate to extrude and straighten the steel pipe and drive the steel pipe to be conveyed along the pipe passing channel, the supporting structure in the pipe passing channel prevents the steel pipe from being pressed to sink inwards and deform, and the quality of the steel pipe can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe production, in particular to a steel pipe straightening machine. Background Art

[0002] The steel pipe straightening machine is a mechanical device used to straighten and repair bent and deformed steel pipes. Its basic principle is to forcibly straighten the bent steel pipe by applying external force. The following are some of the main functions and features of the steel pipe straightening machine: 1. Repair bent steel pipes: Its main function is to restore the bent and deformed steel pipes caused by use or external force to a straight state so that they can be used normally again. 2. Non-damage straightening: When using the steel pipe straightening machine for straightening, it can ensure that there is no indentation or shrinkage on the surface of the straightened steel pipe, maintaining the integrity and performance of the steel pipe.

[0003] Steel pipes usually have a hollow cross-section, so during the straightening process, excessive pressure may cause the surface of the steel pipe to deform and sink toward the hollow interior, thereby affecting the subsequent normal use of the steel pipe. Utility Model Content

[0004] The purpose of the utility model is to provide a steel pipe straightening machine to solve the above-mentioned technical problems, so as to achieve the effect of ensuring the quality of the steel pipe.

[0005] In view of this, the utility model provides a steel pipe straightening machine including a machine base, on which is arranged:

[0006] A pressure roller assembly, the pressure roller assembly includes at least two groups arranged in an upper and lower manner, a pipe passage is arranged between the upper and lower pressure roller assemblies, and the pipe passage allows the steel pipe to pass through;

[0007] A driving assembly, the driving assembly is used to drive the pressing roller assembly to rotate, straighten the steel pipe and drive the steel pipe to be transmitted along the pipe passage;

[0008] The support structure is arranged in the pipe passage to prevent the steel pipe from being compressed and deformed inward.

[0009] In this technical solution, the steel pipe is fed into the pipe passing channel between the upper and lower pressure roller assemblies. The driving assembly rotates the pressure roller assembly to extrude and straighten the steel pipe and drive the steel pipe to be transmitted along the pipe passing channel. The supporting structure in the pipe passing channel prevents the steel pipe from being compressed and deformed inward, thereby ensuring the quality of the steel pipe.

[0010] Furthermore, the supporting structure is a solid rod having the same shape as the hollow cross-section of a standard steel pipe, and the cross-sectional area of ​​the solid rod gradually increases from the inlet end to the outlet end of the pipe passage, and the cross-sectional area of ​​the solid rod at the outlet end of the pipe passage is the same as the hollow cross-sectional area of ​​the standard steel pipe.

[0011] Furthermore, the solid rod is fixedly sleeved on a core shaft, the core shaft is longer than twice the length of the solid rod, and one end of the core shaft is placed on a support frame.

[0012] In the present technical solution, one end of the steel pipe is inserted into the solid rod at the entrance end of the pipe passage and is located between the two pressure roller assemblies. Therefore, the cross-sectional area of ​​the solid rod is small, so the steel pipe can be inserted on the outside. Then the driving assembly drives the steel pipe to be straightened and drives the steel pipe to slide along the pipe passage and slide outside the solid rod. As the cross-sectional area of ​​the solid rod becomes larger and larger, the steel pipe is straightened without excessive concave deformation. Even if there is any, it will be corrected by the solid rod. Then the steel pipe is continuously transmitted along the length direction of the core shaft until the end of the steel pipe is completely out of the pressure roller assembly. At this time, the support frame can be removed to pull out the steel pipe, and then the support frame is moved back to its original position to support the core shaft in the circumferential direction, and the end limits the core shaft to prepare for the straightening of the next steel pipe.

[0013] Furthermore, the edges where the four sides of the solid rod are connected are evenly transitioned through arcs.

[0014] In this technical solution, it is convenient for the steel pipe to slide outside the solid rod.

[0015] Furthermore, the pressure roller assembly includes a rotating shaft, a pressure wheel is fixedly connected to the outside of the rotating shaft, and an annular groove is provided on the pressure wheel.

[0016] Furthermore, a plurality of groups of pressing roller assemblies are arranged along the length direction of the machine base, and the distance between the upper and lower pressing roller assemblies gradually decreases from the inlet end to the outlet end of the tube passage along the length direction of the machine base.

[0017] In the present technical solution, the steel pipe can be straightened gradually in this way, and the pressure applied by a single set of roller assemblies will not be too large, and the steel pipe will not be deformed too much.

[0018] Furthermore, the driving assembly includes:

[0019] A first transmission tooth, wherein the rotating shaft of each pressure roller assembly is connected with a first transmission tooth, and the first transmission teeth of the upper and lower pressure roller assemblies are meshed with each other;

[0020] An intermediate transmission tooth is provided between two adjacent pressure roller assemblies along the length direction of the machine base, and the intermediate transmission tooth is respectively meshed with the first transmission teeth on both sides;

[0021] A power source is connected to one of the intermediate transmission teeth and can drive the intermediate transmission tooth to rotate circumferentially.

[0022] In the technical solution, when the power source drives one of the intermediate transmission teeth to rotate circumferentially, the intermediate transmission tooth will drive all the first transmission teeth to rotate.

[0023] Furthermore, the power source includes a motor and a reducer, the output end of the motor is connected to the input end of the reducer through a belt drive, and the output end of the reducer is connected to one of the intermediate transmission teeth.

[0024] Furthermore, each upper pressing roller assembly is also provided with a position adjustment structure, and the position adjustment structure is used to adjust the distance between the upper and lower pressing roller assemblies.

[0025] Furthermore, the position adjustment structure includes:

[0026] A card plate, wherein the card plate is arranged on the machine base;

[0027] A bolt, wherein the bolt passes through the clamping plate and one end of the bolt is fixedly connected to the pressure roller assembly located above;

[0028] Nuts, at least two of which are provided, the nuts are threadedly connected to the bolts, and nuts are respectively provided on the upper and lower sides of the clamping plate, and the two nuts clamp the clamping plate.

[0029] In the present technical solution, when it is necessary to adjust the distance between the upper and lower pressure roller assemblies, it is only necessary to adjust the vertical position of the upper pressure roller assembly, rotate the nuts on both sides of the card plate to make the two nuts move away from the card plate, and if it is necessary to raise the position of the upper pressure roller assembly, move the bolt upward to move the pressure roller assembly upward to a suitable position, and then rotate the two nuts to clamp the card plate; if it is necessary to lower the position of the upper pressure roller assembly, move the bolt downward to move the pressure roller assembly downward to a suitable position, and then rotate the two nuts to clamp the card plate.

[0030] The beneficial effects of the utility model are:

[0031] 1. The supporting structure in the pipe passage prevents the steel pipe from being compressed and deformed inward, thus ensuring the quality of the steel pipe.

[0032] 2. The edges of the four sides of the solid rod are evenly connected through arc transition to facilitate the sliding of the steel pipe outside the solid rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional diagram of the utility model;

[0034] Figure 2 It is a position relationship diagram of the support frame, the solid rod and the mandrel;

[0035] Figure 3 yes Figure 1 A partial enlarged view of middle A;

[0036] Figure 4 It is a three-dimensional view of the pressure roller assembly.

[0037] The symbols in the figure are:

[0038] 1. Machine base; 2. Pressure roller assembly; 3. Support structure; 4. Solid rod; 5. Mandrel; 6. Support frame; 7. Rotating shaft; 8. Pressure wheel; 9. Annular groove; 10. Inlet end; 11. Outlet end; 12. First transmission tooth; 13. Intermediate transmission tooth; 14. Motor; 15. Reducer; 16. Belt; 17. Clamp; 18. Bolt; 19. Nut. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0040] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0042] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0043] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0044] Embodiment 1:

[0045] like Figure 1 As shown, a steel pipe straightening machine includes a machine base 1, on which a roller assembly 2, a driving assembly and a supporting structure 3 are arranged. The roller assembly 2 includes at least two groups arranged in an upper and lower manner, and a pipe passage is arranged between the upper and lower roller assemblies 2, and the pipe passage allows the steel pipe to pass through; the driving assembly is used to drive the roller assembly 2 to rotate, straighten the steel pipe and drive the steel pipe to be transmitted along the pipe passage; the supporting structure 3 is arranged in the pipe passage to prevent the steel pipe from being compressed and deformed inward.

[0046] The steel pipe is fed into the pipe passage between the upper and lower roller assemblies 2. The driving assembly rotates the roller assembly 2 to extrude and straighten the steel pipe and drive the steel pipe to be transmitted along the pipe passage. The support structure 3 in the pipe passage prevents the steel pipe from being compressed and deformed inward, thereby ensuring the quality of the steel pipe.

[0047] Embodiment 2:

[0048] like Figure 1-2As shown, the support structure 3 is a solid rod 4 with the same shape as the hollow cross-section of a standard steel pipe, and the cross-sectional area of ​​the solid rod 4 gradually increases from the inlet end 10 to the outlet end 11 of the pipe passage, and the cross-sectional area of ​​the solid rod 4 at the outlet end 11 of the pipe passage is the same as the hollow cross-sectional area of ​​the standard steel pipe. The solid rod 4 is fixedly sleeved on a mandrel 5, and the mandrel 5 is longer than twice the length of the solid rod 4, and one end of the mandrel 5 is mounted on a support frame 6.

[0049] One end of the steel pipe is inserted into the solid rod 4 at the entrance end 10 of the pipe passage and is located between the two roller assemblies 2. Therefore, the cross-sectional area of ​​the solid rod 4 is small, so the steel pipe can be sleeved on the outside. Then the driving assembly drives the steel pipe to be straightened and drives the steel pipe to slide along the pipe passage outside the solid rod 4. As the cross-sectional area of ​​the solid rod 4 becomes larger and larger, the steel pipe is straightened without too much concave deformation. Even if there is any, it will be corrected by the solid rod 4. Then the steel pipe is continuously transmitted along the length direction of the core shaft 5 until the end of the steel pipe is completely out of the roller assembly 2. At this time, the support frame 6 can be removed to pull out the steel pipe, and then the support frame 6 can be moved back to the original position to support the core shaft 5 in the circumferential direction, and the end of the core shaft 5 is limited to prepare for the straightening of the next steel pipe. The four sides of the solid rod 4 are connected evenly through the arc transition. It is convenient for the steel pipe to slide outside the solid rod 4.

[0050] Embodiment 3:

[0051] like Figure 1 and Figure 4 As shown, the pressing roller assembly 2 includes a rotating shaft 7, a pressing wheel 8 is fixedly connected to the outside of the rotating shaft 7, and an annular groove 9 is provided on the pressing wheel 8. Multiple groups of pressing roller assemblies 2 are arranged along the length direction of the machine base 1, and the distance between the upper and lower pressing roller assemblies 2 gradually decreases from the inlet end 10 to the outlet end 11 of the pipe passage along the length direction of the machine base 1. In this way, the steel pipe can be straightened step by step, and the pressure applied by a single group of pressing roller assemblies 2 will not be too large, and the steel pipe will not be deformed too much.

[0052] The driving assembly includes a first transmission tooth 12, an intermediate transmission tooth 13 and a power source. The first transmission tooth 12 is connected to the rotating shaft 7 of each roller assembly 2, and the first transmission teeth 12 of the upper and lower roller assemblies 2 are meshed with each other; an intermediate transmission tooth 13 is arranged between two adjacent roller assemblies 2 along the length direction of the machine base 1, and the intermediate transmission teeth 13 are respectively meshed with the first transmission teeth 12 on both sides; the power source is connected to one of the intermediate transmission teeth 13 to drive the intermediate transmission teeth 13 to rotate circumferentially. When the power source drives one of the intermediate transmission teeth 13 to rotate circumferentially, the intermediate transmission tooth 13 will drive all the first transmission teeth 12 to rotate. The power source includes a motor 14 and a reducer 15, and the output end of the motor 14 is connected to the input end of the reducer 15 through a belt 16, and the output end of the reducer 15 is connected to one of the intermediate transmission teeth 13.

[0053] Embodiment 3:

[0054] like Figure 1 and Figure 3 As shown, each of the upper pressure roller assemblies 2 is also provided with a position adjustment structure, which is used to adjust the distance between the upper and lower pressure roller assemblies 2. The position adjustment structure includes a clamping plate 17, a bolt 18 and a nut 19. The clamping plate 17 is provided on the machine base 1; the bolt 18 passes through the clamping plate 17 and one end is fixedly connected to the upper pressure roller assembly 2; at least two nuts 19 are provided, the nuts 19 are threadedly connected to the bolts 18, and nuts 19 are respectively provided on the upper and lower sides of the clamping plate 17, and the two nuts 19 clamp the clamping plate 17.

[0055] When it is necessary to adjust the distance between the upper and lower pressure roller assemblies 2, it is only necessary to adjust the vertical position of the upper pressure roller assembly 2, rotate the nuts 19 on both sides of the clamping plate 17 to make the two nuts 19 move away from the clamping plate 17, and if it is necessary to raise the position of the upper pressure roller assembly 2, move the bolt 18 upward to bring the pressure roller assembly 2 up to a suitable position, and then rotate the two nuts 19 to clamp the clamping plate 17; if it is necessary to lower the position of the upper pressure roller assembly 2, move the bolt 18 downward to bring the pressure roller assembly 2 down to a suitable position, and then rotate the two nuts 19 to clamp the clamping plate 17.

[0056] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A steel pipe straightening machine, characterized in that , comprising a base (1), on which is disposed: A pressure roller assembly (2), the pressure roller assembly (2) comprising at least two groups arranged in an upper and lower manner, a pipe passage is arranged between the upper and lower pressure roller assemblies (2), and the pipe passage allows the steel pipe to pass through; A driving assembly, the driving assembly is used to drive the pressing roller assembly (2) to rotate, straighten the steel pipe and drive the steel pipe to be transported along the pipe passage; A support structure (3) is arranged in the pipe passage to prevent the steel pipe from being deformed and concave inwards due to pressure.

2. A steel pipe straightening machine according to claim 1, characterized in that: The support structure (3) is a solid rod (4) having the same shape as the hollow cross-section of a standard steel pipe. The cross-sectional area of ​​the solid rod (4) gradually increases from the inlet end (10) to the outlet end (11) of the pipe passage. The cross-sectional area of ​​the solid rod (4) at the outlet end (11) of the pipe passage is the same as the hollow cross-sectional area of ​​the standard steel pipe.

3. A steel pipe straightening machine according to claim 2, characterized in that: The solid rod (4) is fixedly sleeved on a core shaft (5), the core shaft (5) is longer than twice the length of the solid rod (4), and one end of the core shaft (5) is mounted on a support frame (6).

4. A steel pipe straightening machine according to claim 3, characterized in that: The four sides of the solid rod (4) are connected by arc transitions.

5. A steel pipe straightening machine according to claim 4, characterized in that: The pressing roller assembly (2) comprises a rotating shaft (7), the rotating shaft (7) is fixedly connected to a pressing wheel (8) on the outside, and an annular groove (9) is provided on the pressing wheel (8).

6. A steel pipe straightening machine according to claim 5, characterized in that: A plurality of groups of pressing roller assemblies (2) are arranged along the length direction of the machine base (1), and the distance between the upper and lower pressing roller assemblies (2) gradually decreases from the inlet end (10) to the outlet end (11) of the tube passage along the length direction of the machine base (1).

7. A steel pipe straightening machine according to claim 6, characterized in that: The drive assembly comprises: A first transmission tooth (12), the rotating shaft (7) of each pressure roller assembly (2) is connected with the first transmission tooth (12), and the first transmission teeth (12) of the upper and lower pressure roller assemblies (2) are meshed with each other; An intermediate transmission tooth (13) is provided between two adjacent pressure roller assemblies (2) along the length direction of the machine base (1), and the intermediate transmission tooth (13) is respectively meshed with the first transmission teeth (12) on both sides; A power source is connected to one of the intermediate transmission teeth (13) and can drive the intermediate transmission tooth (13) to rotate in a circumferential direction.

8. A steel pipe straightening machine according to claim 7, characterized in that: The power source comprises a motor (14) and a reducer (15); the output end of the motor (14) is connected to the input end of the reducer (15) via a belt (16); and the output end of the reducer (15) is connected to one of the intermediate transmission teeth (13).

9. A steel pipe straightening machine according to claim 8, characterized in that: Each upper pressing roller assembly (2) is also provided with a position adjustment structure, and the position adjustment structure is used to adjust the distance between the upper and lower pressing roller assemblies (2).

10. A steel pipe straightening machine according to claim 9, characterized in that: The position adjustment structure comprises: A card plate (17), wherein the card plate (17) is arranged on the machine base (1); A bolt (18), wherein the bolt (18) passes through the clamping plate (17) and one end of the bolt (18) is fixedly connected to the pressure roller assembly (2) located above; Nuts (19), at least two of which are provided, the nuts (19) are threadedly connected to the bolts (18), and nuts (19) are respectively provided on the upper and lower sides of the clamping plate (17), and the two nuts (19) clamp the clamping plate (17).

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