Cutting steel pipe clamping device

Abstract

The utility model relates to a clamping device for cutting a steel pipe, and aims to solve the problem of fixing a traditional steel pipe and improve the stability and efficiency of cutting operation. The device comprises a fixed plate, a telescopic plate, a connecting plate, a swing rod and the like, and can adapt to steel pipes with different pipe diameters through the symmetrical cross-shaped telescopic plate and the swing rod and the design of an inclined plane. The device is mainly and technically characterized in that through the synergistic effect of the telescopic plate, the fixing plate, the connecting plate and the swing rod, the stable and reliable stabilizing effect on the steel pipe in the machining process is achieved. Through the design of the idler wheels, the rolling bearings, the protrusions, the limiting grooves, the limiting blocks and the like, friction is reduced, the service life is prolonged, reliability is improved, and meanwhile mounting and dismounting are convenient.

Description

Technical Field

[0001] The present application relates to the field of devices for positioning, supporting or clamping workpieces, and in particular to a cutting steel pipe clamping device. Background Art

[0002] In traditional steel pipe cutting operations, fixing steel pipes has always been a difficult problem. Commonly used fastening devices often have certain limitations, such as being unable to adapt to steel pipes of different diameters and being unable to rotate during the cutting process, resulting in inconvenient operation and low efficiency. These traditional methods not only increase labor intensity, but may also affect cutting accuracy and safety due to unstable fixation. When a lathe is cutting longer shaft parts, if it is only clamped by the clamp at one end and the other end is processed, the middle part will jump during the rotation process, resulting in processing deviation. Utility Model Content

[0003] The purpose of this application is to provide a cutting steel pipe clamping device, which is used to solve the problem of difficulty in fixing the steel pipe during cutting. When cutting longer shaft parts, the middle part is prone to jumping, and the general fastening device cannot adapt to different pipe diameters and cannot rotate. Therefore, a cutting steel pipe clamping device that is easy to install is proposed.

[0004] To achieve the above purpose, the present application provides the following technical solution: a cutting steel pipe clamping device, comprising:

[0005] A fixing plate, wherein the fixing plate has a cavity, and the cavity has a first opening and a second opening;

[0006] A telescopic plate, the telescopic plate is in a symmetrical cross shape and has two symmetrical wing plates, one end of the telescopic plate extends out of the first opening and presses against the steel pipe, and the other end extends out of the second opening and connects to the cylinder;

[0007] The wing plate has an inclined surface;

[0008] A connecting plate, one end of which is hinged to the inner wall of the cavity, and the connecting plate can rotate in the cavity around a hinge axis;

[0009] A rocker rod, wherein the two rocker rods are symmetrically arranged on both sides of the telescopic plate, the middle part of the rocker rod is hinged to the inner wall of the cavity, the rocker rod has a first rod part and a second rod part, the middle part of the first rod part is hinged to the connecting plate, and the end of the first rod part is abutted against the inclined surface.

[0010] Preferably, the technical solution further includes a protrusion and a limiting groove, wherein the protrusion is arranged on the wing plate, the limiting groove is arranged on the connecting plate, the limiting groove is adapted to the protrusion, and the protrusion can slide in the limiting groove.

[0011] Preferably, this technical solution further includes a roller, which is arranged at the end of the first rod portion and rolls on the inclined surface.

[0012] Preferably, this technical solution further includes a first limiting block, which is arranged at the first opening. The two first limiting blocks are symmetrically arranged on both sides of the telescopic plate and abut against one side of the wing plate.

[0013] Preferably, this technical solution further includes a second limiting block, which is arranged at the second opening. The two second limiting blocks are symmetrically arranged on both sides of the telescopic plate and abut against one side of the wing plate.

[0014] Preferably, this technical solution further includes a rolling bearing, which is arranged at the end of the telescopic plate and the ends of the two swing rods.

[0015] Preferably, the line connecting the end of the telescopic plate and the ends of the two swing rods forms an equilateral triangle.

[0016] Preferably, the included angle between the inclined surface and the axis of the telescopic plate is 45 degrees.

[0017] Preferably, the limiting groove is arc-shaped.

[0018] Preferably, the connecting plate is L-shaped.

[0019] Compared with the prior art, the beneficial effects of this application are as follows:

[0020] The cutting steel pipe clamping device of the present utility model, through the cooperation of the telescopic plate, fixed plate, and connecting plate swing rod, by setting a symmetric cross-shaped telescopic plate and swing rod, and the design of the inclined surface, can adapt to steel pipes of different diameters, effectively solving the problem of poor adaptability of traditional fastening devices. This enables the steel pipe to be stably and reliably fixed during the cutting process, improving the flexibility and efficiency of the operation. The present utility model can effectively prevent the jumping and deviation of the steel pipe during the cutting process, greatly improving the processing accuracy and safety. The clamping device of the present utility model can be conveniently installed and disassembled, with simple operation, reducing the labor intensity of workers and improving the operation efficiency. The present utility model adopts the design of rollers and rolling bearings, reducing friction and improving the service life and reliability of the clamping device. By setting the protrusions, limiting grooves, and limiting blocks, the present utility model can accurately control the movement range of the telescopic plate and swing rod, avoiding excessive stretching and swinging, and further ensuring the processing accuracy. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of a cutting steel pipe clamping device proposed in an embodiment of this application;

[0022] Figure 2 The internal structure schematic diagram of an open state of a cutting steel pipe clamping device proposed in an embodiment of the present application;

[0023] Figure 3 The perspective view of the internal structure of an open state of a cutting steel pipe clamping device proposed in an embodiment of the present application;

[0024] Figure 4 The schematic diagram of a clamping state of a cutting steel pipe clamping device proposed in an embodiment of the present application;

[0025] In the figure: 1, fixed plate; 2, cavity; 3, first opening; 4, second opening; 5, telescopic plate; 6, wing plate; 7, inclined surface; 8, connecting plate; 9, swing rod; 10, first rod part; 11, second rod part; 12, protrusion; 13, limiting groove; 14, roller; 15, first limiting block; 16, second limiting block; 17, rolling bearing; 18, cylinder. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0027] It should be noted that in the description of the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, and does 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 cannot be understood as a limitation to the present application.

[0028] In addition, it should be understood that for the convenience of description, the sizes of the various components shown in the accompanying drawings are not drawn according to the actual proportional relationship. For example, the thickness or width of some layers may be exaggerated relative to other layers.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be necessary to further discuss and describe it specifically in the description of the subsequent drawings.

[0030] To solve the technical problems in the background art, as Figures 1-4 shown, the present application provides a technical solution: a cutting steel pipe clamping device, including:

[0031] The fixed plate 1 is made of a solid material, such as stainless steel, aluminum, etc., and has a cavity 2. The cavity 2 is designed with two openings, namely a first opening 3 and a second opening 4. The telescopic plate 5 is a symmetrical cross-shaped structure, and has two symmetrical wing plates 6. One end of the telescopic plate 5 extends out of the first opening 3 to tighten the steel pipe, and the other end extends out of the second opening 4 to connect the cylinder 18. The cylinder 18 provides power to the telescopic plate 5 for telescopic extension. The surface of the wing plate 6 is designed with an inclined surface 7, and the angle between the inclined surface 7 and one end of the extended part of the telescopic plate 5 is an obtuse angle. The inclined surface 7 is used to move one end of the swing rod 9 on both sides to deviate from the axis of the telescopic plate 5 when the telescopic plate 5 is extended. One end of the connecting plate 8 is hinged to the inner wall of the cavity 2, and the connecting plate 8 can rotate in the cavity 2 around the hinge axis. The two swing rods 9 are symmetrically arranged on both sides of the telescopic plate 5. The middle part of the swing rod 9 is hinged to the inner wall of the cavity 2, and the swing rod 9 has a first rod portion 10 and a second rod portion 11. The middle portion of the first rod portion 10 is hinged to the connecting plate 8 , and the end portion of the first rod portion 10 abuts against the inclined surface 7 .

[0032] During the operation, when it is necessary to cut a long steel pipe or other axial product, place the steel pipe in the clamping jaws provided by the machine, and place the cutting steel pipe clamping device in the middle of the steel pipe. Place the steel pipe in the enclosed space formed by one end of the telescopic plate 5 and the ends of the two rocker arms 9. The cylinder 18 drives the telescopic plate 5 to extend out of the first opening 3, and the wing plate 6 rises and presses against the rocker arm 9, pushing the first rod portion 10 of the rocker arm 9 outward, and the end of the first rod portion 10 slides along the inclined surface 7, and the rocker arm 9 rotates around the hinge axis, and the second rod portion 11 gathers toward the axis of the telescopic plate 5, so that the ends of the two second rod portions 11 and the end of the telescopic plate 5 together clamp the steel pipe and tighten the steel pipe. After the cutting is completed, the cylinder 18 retracts, the rocker arm 9 returns to its original position, and the pressing force of the wing plate 6 on the first rod portion 10 is relaxed, thereby releasing the steel pipe.

[0033] Furthermore, in order to automatically loosen the swing rod 9 relative to the steel pipe during the retraction of the cylinder 18, a protrusion 12 and a limiting groove 13 are added. The protrusion 12 is arranged at the central position of the wing plate 6. The shape of the protrusion 12 is cylindrical, and its diameter is slightly smaller than the width of the limiting groove 13 so as to slide within the limiting groove 13. The height of the protrusion 12 matches the thickness of the connecting plate 8 to ensure that the protrusion 12 can be in close contact with the limiting groove 13 when the device is working. The limiting groove 13 is arranged at the central part of the connecting plate 8. The shape of the limiting groove 13 is arc-shaped, its width is slightly larger than the diameter of the protrusion 12, and its depth is adapted to the height of the protrusion 12 to ensure that the protrusion 12 can slide freely within the limiting groove 13. During implementation, the matching relationship between the protrusion 12 and the limiting groove 13 is the core part of the present utility model. This matching relationship ensures that the protrusion 12 will not break away when sliding within the limiting groove 13 and can limit its sliding range. When the cylinder 18 retracts, driving the telescopic plate 5 to retract, the protrusion 12 slides within the limiting groove 13, and the connecting plate 8 rotates around its hinge point with the cavity 2, driving the first rod portion 10 of the swing rod 9 to slide towards the axis direction of the telescopic plate 5 to complete the relaxation action.

[0034] It should be noted that a roller 14 is arranged at the end of the first rod portion 10. The roller 14 adopts a solid wheel structure, and the material is high-quality steel or aluminum alloy. The surface is hardened to improve wear resistance and service life. A bearing is arranged inside the roller 14 to reduce the rolling resistance. When the first rod portion 10 moves on the inclined surface 7, the roller 14 contacts the inclined surface 7 and rotates through the bearing to realize the smooth movement of the first rod portion 10. At the same time, the setting of the roller 14 can also prevent the first rod portion 10 from directly contacting the inclined surface 7 and reduce wear.

[0035] Furthermore, a first limiting block 15 is arranged at the first opening 3. Its function is to limit the movement range of the wing plate 6 to ensure that the wing plate 6 will not exceed the predetermined range during movement. Two examples of the first limiting block 15 are respectively located on both sides of the telescopic plate 5 and are symmetrically distributed to jointly form a guiding and limiting effect on the telescopic plate 5 to prevent it from deviating from the axis direction during the telescopic process. When one side of the wing plate 6 abuts against the first limiting block 15, the telescopic plate 5 cannot continue to extend out of the first opening 3.

[0036] It should be noted that at the second opening 4, a second limiting block 16 is provided. As shown in the figure, the two second limiting blocks 16 are symmetrically arranged on both sides of the telescopic plate 5, and their positions and sizes match those of the wing plate 6. The second limiting block 16 is made of wear-resistant material and has good wear resistance and impact resistance, effectively protecting the wing plate 6 from damage. When the telescopic plate 5 expands and contracts at the second opening 4, the second limiting block 16 abuts against one side of the wing plate 6, restricting the excessive retraction of the telescopic plate 5 and ensuring its smooth movement. The second limiting blocks 16 are arranged on both sides of the telescopic plate 5 and also have a guiding function, guiding the telescopic plate 5 to move linearly between the first opening 3 and the second opening 4.

[0037] Furthermore, the rolling bearing 17 is one of the core technologies of the present utility model, and it is arranged at the end of the telescopic plate 5 and the ends of the two swing rods 9. The rolling bearing 17 has excellent wear resistance, load-bearing capacity and movement smoothness, and can effectively improve the movement performance of the mechanical structure. During the implementation process, when the driving device drives the telescopic plate 5 to extend, the rolling bearing 17 at the end of the swing rod 9 interacts with the rolling bearing 17 at the end of the telescopic plate 5, enabling the steel pipe waiting for processing parts to achieve a rotating function, which is beneficial for its processing.

[0038] It should be noted that the connecting lines of the ends of the telescopic plate 5 and the ends of the two swing rods 9 form an equilateral triangle. Specifically, one end of the telescopic plate 5 is connected to the air cylinder 18, and the other end is a free end. The length of the telescopic plate 5 can be adjusted according to needs to adapt to the requirements of different working environments. Two swing rods 9 are provided on both sides of the telescopic plate 5, and the middle parts of the swing rods 9 are connected by hinges, enabling the swing rods 9 to rotate around the hinges. The connecting lines of the ends of the telescopic plate 5 and the ends of the swing rods 9 form an equilateral triangle ABC. Among them, point A is the end of the telescopic plate 5, and points B and C are the ends of the two swing rods 9 respectively. When the telescopic plate 5 and the swing rods 9 are in the initial position, the side length of the equilateral triangle ABC is L. When the telescopic plate 5 contracts or extends, the side length of the equilateral triangle ABC will also change accordingly.

[0039] Furthermore, the inclined plane 7 is made of wear-resistant material and has a smooth surface, ensuring good rolling performance when the roller 14 moves on the inclined plane 7. The included angle between the inclined plane 7 and the axis of the telescopic plate 5 is 45 degrees, which is beneficial to achieving effective contact between the inclined plane 7 and the roller 14 and facilitating its up and down rolling.

[0040] It should be noted that the arc design of the limiting groove 13 can effectively limit the movement range of the protrusion 12, while reducing friction and impact during the movement process. The size of the limiting groove 13 matches the size of the limited component, ensuring that the limiting component can move smoothly in the limiting groove 13 while ensuring the limiting effect.

[0041] It should be noted that the L-shaped structure of the connecting plate 8 adopts an integral molding process, that is, the horizontal section and the vertical section are formed at one time to improve the overall performance of the connecting plate 8.

[0042] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A cutting steel pipe clamping device, characterized in that: include: A fixing plate (1), the fixing plate (1) having a cavity (2), the cavity (2) having a first opening (3) and a second opening (4); A telescopic plate (5), the telescopic plate (5) is in a symmetrical cross shape and has two symmetrical wing plates (6); one end of the telescopic plate (5) extends out of the first opening (3) and then presses against the steel pipe, and the other end extends out of the second opening (4) and is connected to the cylinder (18); The wing plate (6) has an inclined surface (7); A connecting plate (8), one end of which is hinged to the inner wall of the cavity (2), and the connecting plate (8) can rotate in the cavity (2) around a hinge axis; A rocker rod (9), wherein two rocker rods (9) are symmetrically arranged on both sides of the telescopic plate (5), the middle part of the rocker rod (9) is hinged to the inner wall of the cavity (2), the rocker rod (9) has a first rod part (10) and a second rod part (11), the middle part of the first rod part (10) is hinged to the connecting plate (8), and the end of the first rod part (10) is in contact with the inclined surface (7).

2. A cutting steel pipe clamping device according to claim 1, characterized in that: It also includes a protrusion (12) and a limiting groove (13), wherein the protrusion (12) is arranged on the wing plate (6), and the limiting groove (13) is arranged on the connecting plate (8), and the limiting groove (13) is adapted to the protrusion (12), and the protrusion (12) can slide in the limiting groove (13).

3. A cutting steel pipe clamping device according to claim 1, characterized in that: It also comprises a roller (14), wherein the roller (14) is arranged at the end of the first rod portion (10), and the roller (14) rolls on the inclined surface (7).

4. A cutting steel pipe clamping device according to claim 1, characterized in that: It also comprises a first limit block (15), wherein the first limit block (15) is arranged at the first opening (3), and two first limit blocks (15) are symmetrically arranged on both sides of the telescopic plate (5) and abut against one side of the wing plate (6).

5. A cutting steel pipe clamping device according to claim 1, characterized in that: It also comprises a second limit block (16), wherein the second limit block (16) is arranged at the second opening (4), and two second limit blocks (16) are symmetrically arranged on both sides of the telescopic plate (5) and abut against one side of the wing plate (6).

6. A cutting steel pipe clamping device according to claim 1, characterized in that: It also includes a rolling bearing (17), wherein the rolling bearing (17) is arranged at the end of the telescopic plate (5) and the ends of the two swing rods (9).

7. A cutting steel pipe clamping device according to claim 3, characterized in that: The line connecting the end of the telescopic plate (5) and the ends of the two swing rods (9) forms an equilateral triangle.

8. The cutting steel pipe clamping device according to claim 1, characterized in that: The angle between the inclined surface (7) and the axis of the telescopic plate (5) is 45 degrees.

9. A cutting steel pipe clamping device according to claim 2, characterized in that: The limiting groove (13) is arc-shaped.

10. A cutting steel pipe clamping device according to any one of claims 1 to 9, characterized in that: The connecting plate (8) is L-shaped.

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