A steel pipe inner grinding device and an inner grinder protection device thereof

Abstract

The utility model discloses a kind of steel pipe inner grinding equipment and its inner grinder protective device, it is related to safety device technical field.The inner grinder protective device includes base, linear motion mechanism, protective cover and positioning fixing mechanism, wherein, base is located at the lower end of the head of steel pipe to be processed, protective cover is installed on base by linear motion mechanism, protective cover can slide on linear motion mechanism along the axial direction of steel pipe to be processed, when protective cover slides to the head of steel pipe to be processed, protective cover can cooperate with base to form the fence space for effectively preventing high-speed grinding wheel fragmentation splashing, positioning fixing mechanism is used to limit the sliding of protective cover along the axial direction of steel pipe, steel pipe inner grinding equipment includes inner grinder, inner grinder protective device, first idler and second idler, and inner grinder includes motor, drill rod and grinding wheel.The utility model can ensure the convenience of operator when replacing steel pipe, and can effectively prevent the danger of high-speed grinding wheel fragmentation, splinter splashing.

Description

Technical Field

[0001] This utility model relates to the field of safety protection device technology, specifically to a steel pipe internal grinding equipment and its internal grinding mill protection device. Background Technology

[0002] An internal grinding mill is a specialized piece of equipment used for processing the inner surface of steel pipes. It can process different types of steel pipes, such as stainless steel pipes, alloy steel pipes, and straight seam welded pipes, grinding, removing rust, eliminating defects, and refurbishing their inner surfaces. In order to obtain a smooth and clean inner surface, thereby improving the quality of steel pipes and increasing economic benefits, the technology of steel pipe internal grinding is becoming increasingly important.

[0003] However, the grinding wheel in the internal grinding mill is at risk of breaking during the high-speed grinding of the inner wall surface of the steel pipe. Due to centrifugal force, the grinding wheel fragments are easily thrown out, posing a safety hazard of injury.

[0004] Therefore, the present invention aims to provide a protective device that can prevent the danger of high-speed grinding wheel breakage and splashing. Utility Model Content

[0005] The purpose of this utility model is to provide a steel pipe internal grinding equipment and its internal grinding mill protection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an internal grinding mill protective device, comprising a base, a linear motion mechanism, a protective cover, and a positioning and fixing mechanism. The base is located at the lower end of the head of the steel pipe to be processed. The protective cover is installed on the base through the linear motion mechanism. The protective cover can slide along the axial direction of the steel pipe to be processed on the linear motion mechanism. When the protective cover slides to the head of the steel pipe to be processed, the protective cover can cooperate with the base to form a barrier space to effectively prevent the high-speed grinding wheel from breaking and splashing. The positioning and fixing mechanism is used to restrict the sliding of the protective cover along the axial direction of the steel pipe.

[0007] Based on the above technical features, when the internal grinding mill grinds the inner wall surface of the steel pipe, the protective cover can be slid to the head of the steel pipe to be processed (i.e., the protective cover is slid to the processing area). After the steel pipe grinding is completed and needs to be replaced, the protective cover can be slid back to its original position. Therefore, this protective device ensures the convenience of operators when replacing steel pipes and effectively prevents the danger of high-speed grinding wheel breakage and flying fragments. Simultaneously, the protective cover can be limited by a positioning and fixing mechanism to prevent vibrations during the grinding of the steel pipe, which could cause the protective cover to slip or shift, ultimately failing to provide protection.

[0008] Preferably, in this technical solution, the linear motion mechanism includes a slide rail and a pulley assembly. The slide rail is fixedly mounted on the base along the axial direction of the steel pipe to be processed, and the pulley assembly is fixedly mounted at each of the four corners of the protective cover. The protective cover is slidably mounted on the slide rail via the pulley assembly. More preferably, the linear motion mechanism further includes limiting blocks, which are fixedly mounted at both ends of the slide rail to prevent the protective cover from sliding off the slide rail.

[0009] Based on the above technical features, since the protective cover is bulky and difficult to move, the linear motion mechanism composed of slide rails and pulleys in this utility model can effectively reduce motion resistance. At the same time, it is also suitable for scenarios where the protective cover reciprocates multiple times.

[0010] Preferably, in this technical solution, the positioning and fixing mechanism includes a positioning pin and a tensioning device. The slide rail has a positioning hole that mates with the positioning pin. The protective cover can be limited and constrained at the head of the steel pipe to be processed by the positioning pin inserted into the positioning hole. One end of the tensioning device is connected to the protective cover, and the other end is connected to the base, further restricting the sliding of the protective cover on the slide rail. More preferably, the positioning pin is a fully threaded bolt, and the positioning hole is a fully threaded bolt hole.

[0011] Based on the above technical features, the protective cover can be quickly positioned by inserting a positioning pin into the positioning hole, so that the protective cover can be quickly limited and constrained to the head position of the steel pipe to be processed. At the same time, the tensioning device can effectively prevent the protective cover from sliding and causing displacement.

[0012] Preferably, in this technical solution, the protective device further includes four fixing plates installed on the base. The number of the tensioning devices corresponds one-to-one with the fixing plates, and one end of the tensioning device is connected to the protective cover, while the other end is connected to the fixing plate. Along the axial direction of the steel pipe, two fixing plates are distributed on one side of the base, and the other two fixing plates are distributed on the other side of the base. The fixing plates located on both sides of the base are located on both sides of the positioning hole.

[0013] Based on the above technical features, the coordinated action of four tensioning devices in different directions disperses the load impact, effectively preventing the protective cover from shifting and failing to provide protection.

[0014] In this technical solution, the tensioning device is preferably a tension spring. Along the axial direction of the steel pipe, the fixing plate has multiple tension holes, and the tension spring can be hooked into different tension holes to quickly adjust the tension.

[0015] Based on the above technical features, the tensioning device uses a tension spring, which can effectively absorb vibration energy and prevent the locating pin from undergoing plastic deformation due to impact loads. Furthermore, by attaching it to different tension holes, the effective tensile length of the spring can be changed, allowing for graded adjustment of the tension force.

[0016] In this technical solution, the protective cover is preferably made of steel wire mesh.

[0017] A steel pipe internal grinding device includes an internal grinding mill, a first idler roller, a second idler roller, and a protective device for the internal grinding mill. The internal grinding mill includes a motor, a drill rod, and a grinding wheel. The internal grinding device has a processing area, and the protective device covers the outside of the processing area. One end of the drill rod is connected to the power output end of the motor, and the other end of the drill rod is equipped with a grinding wheel for extending into the steel pipe to be processed to grind the inner wall surface of the steel pipe. The grinding wheel is located within the processing area. Along the axial direction of the steel pipe to be processed, the first idler roller and the second idler roller are respectively located on both sides of the protective device. The first idler roller supports the drill rod, and the second idler roller supports the steel pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal mill protection device in its original working position in this embodiment of the present invention;

[0019] Figure 2 As an embodiment of this utility model Figure 1 Top view;

[0020] Figure 3 This is a schematic diagram of the structure of the internal grinding mill protective device sliding to the processing area of ​​the steel pipe internal grinding equipment in an embodiment of this utility model;

[0021] Figure 4 As an embodiment of this utility model Figure 3 Side view.

[0022] In the diagram: 1. Internal grinding mill; 2. Base; 3. Slide rail; 4. Pulley assembly; 5. Limiting block; 6. Protective cover; 7. Steel pipe; 8. Positioning pin; 9. Tensioning device; 10. Fixing plate; 11. Motor; 12. Drill rod; 13. Grinding wheel; 14. First idler roller; 15. Second idler roller. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0027] like Figures 1 to 4 As shown, this utility model provides a technical solution: a steel pipe internal grinding equipment and its internal grinding mill protection device, wherein the internal grinding mill protection device includes a base 2, a linear motion mechanism, a protective cover 6 and a positioning and fixing mechanism.

[0028] Specifically, such as Figures 1 to 3 As shown, the base 2 is located at the lower end of the head of the steel pipe 7 to be processed. The protective cover 6 is installed on the base 2 through a linear motion mechanism. The protective cover 6 can slide on the linear motion mechanism along the axial direction of the steel pipe 7 to be processed. When the protective cover 6 slides to the head of the steel pipe 7 to be processed, the protective cover 6 can cooperate with the base 2 to form a barrier space to effectively prevent the high-speed grinding wheel from breaking and splashing. The positioning and fixing mechanism is used to limit the sliding of the protective cover 6 along the axial direction of the steel pipe 7.

[0029] When using the protective device of this invention, when the internal grinding mill 1 grinds the inner wall surface of the steel pipe 7, the protective cover 6 can be slid to the head position of the steel pipe 7 to be processed (that is, the protective cover is slid to the processing area of ​​the steel pipe internal grinding equipment), placing the head of the steel pipe to be processed within the enclosed space. When the steel pipe 7 is finished being ground and needs to be replaced, the protective cover 6 can be slid back to its original position. Therefore, the protective device can ensure the convenience of operators when replacing the steel pipe 7, and effectively prevent the danger of the high-speed grinding wheel 13 breaking and fragments flying. At the same time, the protective cover 6 can be limited by the positioning and fixing mechanism to prevent the equipment from vibrating when the internal grinding mill 1 grinds the steel pipe 7, which could easily cause the protective cover 6 to slide or shift, ultimately failing to provide protection.

[0030] Furthermore, in this embodiment of the present invention, the linear motion mechanism includes a slide rail 3, a pulley assembly 4, and a limiting block 5. The slide rail 3 is fixedly installed on the base 2 along the axial direction of the steel pipe 7 to be processed. Pulley assemblies 4 are fixedly installed at each of the four corners of the protective cover 6. The protective cover 6 is slidably installed on the slide rail 3 via the pulley assemblies 4. The limiting block 5 is fixedly installed at both ends of the slide rail 3 to prevent the protective cover 6 from sliding off the slide rail 3. The linear motion mechanism composed of the slide rail 3 and pulley assembly 4 effectively reduces motion resistance and is also suitable for scenarios where the protective cover 6 undergoes multiple reciprocating movements. Of course, in other embodiments, other linear motion mechanisms can be used to replace the slide rail 3 and pulley assembly 4. For example, a linear module or a sliding guide rail system can be used, as long as it is suitable for the reciprocating linear motion of the protective cover 6.

[0031] like Figures 1 to 3 As shown, the positioning and fixing mechanism includes a positioning pin 8 and a tensioning device 9. The slide rail 3 has a positioning hole that cooperates with the positioning pin 8. The protective cover 6 can be limited and constrained at the head of the steel pipe 7 to be processed by the positioning pin 8 inserted into the positioning hole. One end of the tensioning device 9 is connected to the protective cover 6 and the other end is connected to the base 2 to further restrict the sliding of the protective cover 6 on the slide rail 3.

[0032] Specifically, such as Figure 1 As shown, when the protective cover 6 is in its original position, the positioning pin 8 is in a floating state, that is, the positioning pin 8 is separated from the positioning hole, as shown. Figure 3 As shown, when the protective cover 6 slides to the processing area, the positioning pin 8 is in a locked state (fixed state), that is, the positioning pin 8 and the positioning hole are in a limiting fit, and the protective cover 6 is positioned and constrained at the head position of the steel pipe 7 to be processed by mechanical force.

[0033] Furthermore, in this embodiment of the invention, the positioning pin 8 is a fully threaded bolt, and the positioning hole is a fully threaded bolt hole. Additionally, the positioning pin 8 is only provided on one side of the protective cover 6. The tensioning device 9 is a tension spring to quickly absorb vibration energy and prevent the positioning pin 8 from undergoing plastic deformation due to impact loads. The protective cover 6 is made of wire mesh.

[0034] like Figures 1 to 3 As shown, the internal mill protective device also includes four fixed plates 10 mounted on the base 2. The number of tensioning devices 9 corresponds one-to-one with the fixed plates 10, and one end of each tensioning device 9 is connected to the protective cover 6, while the other end is connected to the fixed plate 10. Along the axial direction of the steel pipe 7, two fixed plates 10 are distributed on one side of the base 2, and the other two fixed plates 10 are distributed on the other side of the base 2. The fixed plates 10 located on both sides of the base 2 are positioned on both sides of the positioning hole. Through the coordinated action of the four tensioning devices 9 in different directions, the load impact is dispersed, effectively preventing the protective cover 6 from shifting and failing to provide protection.

[0035] Furthermore, along the axial direction of the steel pipe 7, the fixing plate 10 has multiple pull holes, and the tension spring can be hooked into different pull holes to quickly adjust the tension. Preferably, hooks can be provided at both ends of the tension spring. By hooking the tension spring into different pull holes, the effective tensile length of the tension spring can be changed, and the tension can be adjusted in stages.

[0036] like Figure 3 and Figure 4 As shown, a steel pipe internal grinding equipment includes an internal grinding mill 1, a first idler roller 14, a second idler roller 15, and the aforementioned internal grinding mill protective device. The internal grinding mill 1 includes a motor 11, a drill rod 12, and a grinding wheel 13. The steel pipe internal grinding equipment has a processing area, and the internal grinding mill protective device is installed outside the processing area.

[0037] One end of the drill rod 12 is connected to the power output end of the motor 11, and the other end of the drill rod 12 is equipped with a grinding wheel 13 for extending into the steel pipe 7 to be processed to grind the inner wall surface of the steel pipe 7. The grinding wheel 13 is located in the processing area. Along the axial direction of the steel pipe 7 to be processed, the first roller 14 and the second roller 15 are respectively located on both sides of the internal grinding mill protective device. The first roller 14 is used to support the drill rod 12, and the second roller 15 is used to support the steel pipe 7.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An internal mill guard characterized in that, It includes a base (2), a linear motion mechanism, a protective cover (6), and a positioning and fixing mechanism, wherein: The base (2) is located at the lower end of the head of the steel pipe (7) to be processed; The protective cover (6) is installed on the base (2) through a linear motion mechanism. The protective cover (6) can slide on the linear motion mechanism along the axial direction of the steel pipe (7) to be processed. When the protective cover (6) slides to the head of the steel pipe (7) to be processed, the protective cover (6) can cooperate with the base (2) to form a barrier space to effectively prevent the high-speed grinding wheel from breaking and splashing. The positioning and fixing mechanism is used to restrict the protective cover (6) from sliding along the axial direction of the steel pipe (7).

2. The internal mill guard according to claim 1, characterized in that The linear motion mechanism includes a slide rail (3) and a pulley assembly (4), wherein, The slide rail (3) is fixedly installed on the base (2) along the axial direction of the steel pipe (7) to be processed. The pulley assembly (4) is fixedly installed at each of the four corners of the protective cover (6). The protective cover (6) is slidably installed on the slide rail (3) through the pulley assembly (4).

3. The internal mill guard according to claim 2, wherein, The linear motion mechanism also includes a limiting block (5), which is fixedly installed at both ends of the slide rail (3) to prevent the protective cover (6) from sliding off the slide rail (3).

4. The internal mill protection device according to claim 2, characterized in that, The positioning and fixing mechanism includes a positioning pin (8) and a tensioning device (9), wherein, The slide rail (3) is provided with a positioning hole that cooperates with the positioning pin (8). The protective cover (6) can be limited and constrained at the head of the steel pipe (7) to be processed by the positioning pin (8) inserted into the positioning hole. One end of the tensioning device (9) is connected to the protective cover (6), and the other end is connected to the base (2), which is used to further restrict the sliding of the protective cover (6) on the slide rail (3).

5. The internal mill guard according to claim 4, wherein, The positioning pin (8) is a full-thread bolt, and the positioning hole is a full-thread bolt hole.

6. The internal mill protection device according to claim 4, characterized in that, The protective device also includes four fixing plates (10) installed on the base (2). The number of the tensioning devices (9) corresponds one-to-one with the fixing plates (10), and one end of the tensioning device (9) is connected to the protective cover (6), and the other end is connected to the fixing plate (10). Along the axial direction of the steel pipe (7), two fixing plates (10) are distributed on one side of the base (2), and two other fixing plates (10) are distributed on the other side of the base (2), and the fixing plates (10) on both sides of the base (2) are located on both sides of the positioning hole.

7. An internal mill guard according to claim 6, characterised in that, The tensioning device (9) is a tension spring.

8. The internal mill guard according to claim 7, characterized in that Along the axial direction of the steel pipe (7), the fixing plate (10) has multiple pull holes, and the tension spring can be hooked into different pull holes to quickly adjust the tension.

9. The internal mill guard according to claim 1, wherein, The protective cover (6) is made of steel wire mesh.

10. A pipe mill, comprising an inner mill (1), a first roller (14) and a second roller (15), the inner mill (1) comprising a motor (11), a drill rod (12) and a grinding wheel (13), characterized in that, The steel pipe internal grinding equipment also includes the internal grinding mill protection device as described in any one of claims 1-9; wherein: The steel pipe internal grinding equipment has a processing area, and the internal grinding mill protective device is installed on the outside of the processing area; One end of the drill rod (12) is connected to the power output end of the motor (11), and the other end of the drill rod (12) is equipped with a grinding wheel (13) for extending into the steel pipe (7) to be processed to grind the inner wall surface of the steel pipe (7). The grinding wheel (13) is located in the processing area. Along the axial direction of the steel pipe (7) to be processed, the first roller (14) and the second roller (15) are respectively located on the two sides of the inner grinder protection device, the first roller (14) is used for supporting the drill rod (12), and the second roller (15) is used for supporting the steel pipe (7).

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