A combined steel pipe inner wall segmented grinding device

Abstract

This utility model discloses a combined steel pipe inner wall segmented grinding device, belonging to the field of steel pipe processing technology. The combined steel pipe inner wall segmented grinding device includes a support rod, on which a rotary motor and an insertion rod are mounted. The output end of the rotary motor is connected to the insertion rod. The insertion rod is equipped with a straight pipe grinding mechanism and a bent pipe grinding mechanism. The straight pipe grinding mechanism includes multiple first sandpapers and a first support block. The first sandpapers are mounted on the first support block and have a first grinding surface that mates with the inner wall of the straight pipe section in the steel pipe body. This utility model provides a combined steel pipe inner wall segmented grinding device where the support rod has two states: a straight pipe grinding state and a bent pipe grinding state. When the support rod is in the straight pipe grinding state, it can grind the straight pipe section of the steel pipe body and grind the inner wall of the bent pipe section, thereby realizing segmented grinding of the inner wall of the steel pipe body.

Description

Technical Field

[0001] This utility model belongs to the field of steel pipe processing technology, specifically relating to a combined steel pipe inner wall segmented grinding device. Background Technology

[0002] Steel pipes are hollow, long tubes made from steel through specific processes. They are widely used in fluid transportation, structural support, and other fields. When the inner wall of a steel pipe comes into contact with air, oxygen and iron undergo an oxidation reaction to produce rust, and it also forms an electrolyte solution with moisture in the environment.

[0003] To meet market demand, some steel pipes are designed with bent pipe structures. When grinding the pipe, the grinding device usually abuts against the inner walls on both sides of the steel pipe, which can grind the entire steel pipe. However, this grinding mechanism cannot pass through the bent part of the steel pipe. Therefore, this application proposes a combined steel pipe inner wall segmented grinding device. Utility Model Content

[0004] The purpose of this utility model is to provide a combined steel pipe inner wall segmented grinding device to solve the problem that the existing grinding devices mentioned in the background art usually abut against the inner walls of both sides of the steel pipe when grinding the pipe, so that the entire steel pipe can be ground, but this grinding mechanism cannot pass through the bent part of the steel pipe.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined steel pipe inner wall segmented grinding device, including a support rod, on which a rotary motor and an insertion rod are provided, the output end of the rotary motor is connected to the insertion rod, and the insertion rod is provided with a straight pipe grinding mechanism and a bent pipe grinding mechanism;

[0006] The straight pipe grinding mechanism includes multiple first grinding sandpapers and a first support block. The first grinding sandpapers are installed on the first support block, and the first grinding sandpapers are provided with a first grinding surface that mates with the inner wall of the straight pipe section in the steel pipe body.

[0007] The insertion rod is equipped with a spacing adjustment mechanism, which is connected to the first support block. The spacing adjustment mechanism is used to adjust the distance between the first support block and the insertion rod.

[0008] The pipe bending and grinding mechanism includes several second sandpapers and a second support block, with the second sandpapers installed on the outer wall of the second support block;

[0009] The spacing adjustment mechanism is connected to the second support block and is used to adjust the distance between the second support block and the insertion rod.

[0010] Preferably, the steel pipe body includes two straight pipe sections and a bent pipe section, with the two ends of the bent pipe section respectively connected to the two straight pipe sections, and the bent pipe section and the two straight pipe sections are smoothly connected.

[0011] Preferably, the second sandpaper has a second sanding surface, and the cross-section of the second sanding surface is set as an arc shape with a central protrusion on both sides.

[0012] Preferably, the support rod has at least two states, including a straight tube grinding state and a bent tube grinding state.

[0013] Preferably, when the support rod is in the straight tube grinding state, the first sandpaper is in contact with the inner wall of the steel pipe body, and there is a gap between the second sandpaper and the inner wall of the steel pipe body.

[0014] Preferably, when the support rod is in the bending and grinding state, the second sandpaper is pressed against the inner wall of the steel pipe body, and there is a gap between the first sandpaper and the inner wall of the steel pipe body.

[0015] Preferably, the straight tube grinding mechanism further includes a first adjusting rod and a first adjusting tube, a first support block is mounted on the first adjusting rod, the first adjusting rod and the first adjusting tube are slidably engaged, and the first adjusting tube is mounted on the insert rod.

[0016] Preferably, the bending and grinding mechanism further includes a second adjusting rod and a second adjusting tube, the second support block is mounted on the second adjusting rod, the second adjusting rod is inserted into the second adjusting tube, and the second adjusting tube is mounted on the insert rod.

[0017] Preferably, the spacing adjustment mechanism includes a rotating frame, a support base, a lower adjustment frame, an upper adjustment frame, and an adjustment motor. The rotating frame is rotatably mounted on the support base, and the output end of the adjustment motor is connected to the rotating frame. Two connecting shafts are inserted into both ends of the rotating frame, one of which is inserted into a vertically distributed lower adjustment slot in the lower adjustment frame, and the other connecting shaft is inserted into a vertically distributed upper adjustment slot in the upper adjustment frame. The lower adjustment frame is mounted on a first adjustment rod, and the upper adjustment frame is mounted on a second adjustment rod.

[0018] Preferably, the support rod is provided with a grip and an elastic component on its outer side. The grip is rotatably connected to the support rod. There are two elastic components, which are respectively installed in two directions where the support rod can move.

[0019] Beneficial effects:

[0020] This utility model provides a combined steel pipe inner wall segmented grinding device. The positions of the first and second support blocks are adjusted by a spacing adjustment mechanism, allowing the support rod to have two states: straight pipe grinding and curved pipe grinding. When the support rod is in the straight pipe grinding state, the first sandpaper is in contact with the inner wall of the steel pipe body, while the second sandpaper has a gap with the inner wall of the steel pipe body. At this time, the first sandpaper is in contact with the inner wall of the straight section of the steel pipe body, enabling grinding of the straight section. When the support rod is in the curved pipe grinding state, the second sandpaper rests against the inner wall of the steel pipe body, while the first sandpaper has a gap with the inner wall of the steel pipe body. At this time, the second sandpaper abuts against the inner wall of the curved section of the steel pipe body. Starting the rotary motor at this time drives the second sandpaper to rotate, grinding the inner wall of the curved section, thereby achieving segmented grinding of the inner wall of the steel pipe body.

[0021] The support rod can rotate around the handle. The elastic component is used to limit the rotation of the support rod, so that the support rod has a force to restore it to the parallel direction with the handle. In this way, the user can push the handle to move the support rod and other components inside the steel pipe body and move it against the inner wall of the steel pipe body. When it reaches the bend, the rotatable support rod can move along the inner wall of the steel pipe body under the push of the handle, so that the bend can be ground. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the steel pipe body in this utility model;

[0023] Figure 2 This is one of the structural schematic diagrams of the combined steel pipe inner wall segmented grinding device in this utility model;

[0024] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0025] Figure 4 This is the second schematic diagram of the combined steel pipe inner wall segmented grinding device in this utility model;

[0026] Figure 5 This utility model Figure 4 A magnified structural diagram at point B in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Steel pipe body; 2. Straight pipe grinding mechanism; 201. First sandpaper; 202. First support block; 203. First adjusting rod; 204. First adjusting tube; 3. Bending pipe grinding mechanism; 301. Second sandpaper; 302. Second support block; 303. Second adjusting rod; 304. Second adjusting tube; 4. Rotating frame; 5. Lower adjusting frame; 6. Upper adjusting frame; 7. Adjusting motor; 8. Support rod; 9. Handle; 10. Elastic component. Detailed Implementation

[0029] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0030] like Figures 1-5 As shown in the figure, the present invention provides a combined steel pipe inner wall segmented grinding device, including a support rod 8, on which a rotary motor and an insert rod are provided. The output end of the rotary motor is connected to the insert rod. Specifically, the output end of the rotary motor and the insert rod can be connected by a coupling. The insert rod is provided with a straight pipe grinding mechanism 2 and a bent pipe grinding mechanism 3.

[0031] For reference Figure 1 The two steel pipe bodies 1 are connected by bolts and nuts to form a combined steel pipe structure. The steel pipe body 1 includes two straight pipe sections and a bent pipe section. The two ends of the bent pipe section are respectively connected to the two straight pipe sections, and the bent pipe section is smoothly connected to the two straight pipe sections.

[0032] Specifically, the straight pipe grinding mechanism 2 includes multiple first sandpapers 201 and first support blocks 202. The first sandpapers 201 are mounted on the first support blocks 202. The first sandpapers 201 are provided with a first grinding surface that cooperates with the inner wall of the straight pipe section in the steel pipe body 1. The side of the first sandpapers 201 away from the first support blocks 202 is the first grinding surface. The area of ​​the first grinding surface that is in contact with the inner wall of the straight pipe section in the steel pipe body 1 is larger than the area of ​​the second grinding surface that is in contact with the inner wall of the steel pipe body 1.

[0033] It should be noted that a spacing adjustment mechanism is installed on the insertion rod, which is connected to the first support block 202. The spacing adjustment mechanism is used to adjust the distance between the first support block 202 and the insertion rod.

[0034] More specifically, the pipe bending and grinding mechanism 3 includes several second sandpapers 301 and second support blocks 302. The second sandpapers 301 are installed on the outer wall of the second support blocks 302. The second sandpapers 301 are provided with a second grinding surface. The cross-section of the second grinding surface is set as an arc shape with a central protrusion on both sides. The second grinding surface is used to grind the inner wall of the pipe bending section. During grinding, the central protrusion of the second grinding surface contacts the inner wall of the pipe bending section. During the movement along the inner wall of the pipe bending section, the second grinding surface will not interfere with the inner wall of the pipe bending section, and will not hinder the movement of the pipe bending and grinding mechanism 3 inside the pipe bending section.

[0035] It should be noted that the spacing adjustment mechanism is connected to the second support block 302, and the spacing adjustment mechanism is used to adjust the distance between the second support block 302 and the insertion rod.

[0036] The spacing adjustment mechanism adjusts the distance between the first support block 202 and the second support block 302, allowing the support rod 8 to have at least two states, including a straight tube grinding state and a bent tube grinding state. When the support rod 8 is in the straight tube grinding state, the first sandpaper 201 is in contact with the inner wall of the steel pipe body 1, and there is a gap between the second sandpaper 301 and the inner wall of the steel pipe body 1. When the support rod 8 is in the bent tube grinding state, the second sandpaper 301 is pressed against the inner wall of the steel pipe body 1, and there is a gap between the first sandpaper 201 and the inner wall of the steel pipe body 1. Power supplies, controllers, and other components are installed on the support rod 8 for controlling components such as the rotary motor.

[0037] The positions of the first support block 202 and the second support block 302 are adjusted by the spacing adjustment mechanism, allowing the support rod 8 to have two states: straight pipe grinding state and curved pipe grinding state. When the support rod 8 is in the straight pipe grinding state, the first sandpaper 201 is in contact with the inner wall of the steel pipe body 1, and there is a gap between the second sandpaper 301 and the inner wall of the steel pipe body 1. At this time, the first sandpaper 201 is in contact with the inner wall of the straight pipe section of the steel pipe body 1, which can perform grinding work on the straight pipe section of the steel pipe body 1. When the support rod 8 is in the curved pipe grinding state, the second sandpaper 301 is against the inner wall of the steel pipe body 1, and there is a gap between the first sandpaper 201 and the inner wall of the steel pipe body 1. At this time, the second sandpaper 301 is in contact with the inner wall of the curved pipe section of the steel pipe body 1. When the rotary motor is started, it can drive the second sandpaper 301 to rotate and grind the inner wall of the curved pipe section, thereby realizing the segmented grinding work of the inner wall of the steel pipe body 1.

[0038] For reference Figure 5 The straight tube grinding mechanism 2 also includes a first adjusting rod 203 and a first adjusting tube 204. A first support block 202 is installed on the first adjusting rod 203. The first adjusting rod 203 and the first adjusting tube 204 are slidably engaged. The first adjusting tube 204 is installed on the insert rod.

[0039] For reference Figure 3 The bending and grinding mechanism 3 also includes a second adjusting rod 303 and a second adjusting tube 304. The second support block 302 is installed on the second adjusting rod 303, the second adjusting rod 303 is inserted into the second adjusting tube 304, and the second adjusting tube 304 is installed on the insert rod.

[0040] For reference Figure 5 The spacing adjustment mechanism includes a rotating frame 4, a support base, a lower adjustment frame 5, an upper adjustment frame 6, and an adjustment motor 7. The rotating frame 4 is rotatably mounted on the support base. The output end of the adjustment motor 7 is connected to the rotating frame 4, and the adjustment motor 7 can drive the rotating frame 4 to rotate. Specifically, the output shaft of the adjustment motor 7 is connected to the rotating frame 4 through a flat keyway.

[0041] It should be noted that two connecting shafts are inserted into both ends of the rotating frame 4. One connecting shaft is inserted into the vertically distributed lower adjusting groove in the lower adjusting frame 5, and the other connecting shaft is inserted into the vertically distributed upper adjusting groove in the upper adjusting frame 6. The lower adjusting frame 5 is mounted on the first adjusting rod 203, and the upper adjusting frame 6 is mounted on the second adjusting rod 303.

[0042] Start the adjustment motor 7. The adjustment motor 7 can drive the rotating frame 4 to rotate up or down. When the rotating frame 4 rotates, it can skip the connecting shaft, lower adjustment frame 5, upper adjustment frame 6 and other components to drive the first adjustment rod 203 and the second adjustment rod 303 to move, thereby adjusting the depth of the first adjustment rod 203 inserted into the first adjustment tube 204 and the depth of the second adjustment rod 303 inserted into the second adjustment tube 304, and then adjusting the distance between the first sandpaper 201, the second sandpaper 301 and the insertion rod.

[0043] To facilitate control over the depth to which the support rod 8 is inserted into the steel pipe body 1, a grip 9 and an elastic component 10 are provided on the outside of the support rod 8. The grip 9 is rotatably connected to the support rod 8. There are two elastic components 10, which are respectively installed in two directions where the support rod 8 can move. The elastic component 10 is a spring, specifically a metal spring with a length of 6cm and a wire diameter of 8mm.

[0044] The support rod 8 can rotate around the handle 9. The elastic component 10 is used to limit the rotation of the support rod 8, so that the support rod 8 has a force to restore its parallel direction with the handle 9. In this way, the user can push the handle 9 to push the support rod 8 and other components to move inside the steel pipe body 1 and move against the inner wall of the steel pipe body 1. When it reaches the bend, the rotatable support rod 8 can move along the inner wall of the steel pipe body 1 under the push of the handle 9, so that the bend can be ground.

[0045] In summary, this utility model embodiment provides a combined steel pipe inner wall segmented grinding device. The positions of the first support block 202 and the second support block 302 are adjusted by a spacing adjustment mechanism, allowing the support rod 8 to have two states: a straight pipe grinding state and a bent pipe grinding state. When the support rod 8 is in the straight pipe grinding state, the first sandpaper 201 is in contact with the inner wall of the steel pipe body 1, while the second sandpaper 301 has a gap with the inner wall of the steel pipe body 1. At this time, the first sandpaper 201 and the straight section of the steel pipe body 1 are in close contact. The inner wall of the support rod 8 is in the bending grinding state, and the second sandpaper 301 is pressed against the inner wall of the steel pipe body 1. The first sandpaper 201 is spaced from the inner wall of the steel pipe body 1. At this time, the second sandpaper 301 is in contact with the inner wall of the bending part of the steel pipe body 1. When the rotary motor is started, the second sandpaper 301 can be driven to rotate to grind the inner wall of the bending part, thereby realizing the segmented grinding of the inner wall of the steel pipe body 1.

[0046] The support rod 8 can rotate around the handle 9. The elastic component 10 is used to limit the rotation of the support rod 8, so that the support rod 8 has a force to restore its parallel direction with the handle 9. In this way, the user can push the handle 9 to push the support rod 8 and other components to move inside the steel pipe body 1 and move against the inner wall of the steel pipe body 1. When it reaches the bend, the rotatable support rod 8 can move along the inner wall of the steel pipe body 1 under the push of the handle 9, so that the bend can be ground.

[0047] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A combined steel pipe inner wall segment polishing device, comprising a support rod (8), characterized in that, The support rod (8) is equipped with a rotary motor and a plug rod. The output end of the rotary motor is connected to the plug rod. The plug rod is equipped with a straight tube grinding mechanism (2) and a bent tube grinding mechanism (3). The straight pipe grinding mechanism (2) includes multiple first grinding sandpapers (201) and a first support block (202). The first grinding sandpapers (201) are installed on the first support block (202), and the first grinding sandpapers (201) are provided with a first grinding surface that cooperates with the inner wall of the straight pipe section in the steel pipe body (1). The insertion rod is equipped with a spacing adjustment mechanism, which is connected to the first support block (202). The spacing adjustment mechanism is used to adjust the distance between the first support block (202) and the insertion rod. The bending pipe grinding mechanism (3) includes several second sandpapers (301) and a second support block (302). The second sandpapers (301) are installed on the outer wall of the second support block (302). The spacing adjustment mechanism is connected to the second support block (302) and is used to adjust the distance between the second support block (302) and the insertion rod.

2. A segmented polishing device for the interior wall of a steel pipe according to claim 1, wherein The steel pipe body (1) includes two straight pipe sections and a bent pipe section. The two ends of the bent pipe section are respectively connected to the two straight pipe sections, and the bent pipe section is smoothly connected to the two straight pipe sections.

3. A segmented polishing device for the interior wall of a steel pipe according to claim 1, wherein The second sandpaper (301) is provided with a second sanding surface, and the cross-section of the second sanding surface is set as an arc shape with a central protrusion on both sides.

4. A segmented polishing device for the interior wall of a steel pipe according to claim 1, wherein The support rod (8) has at least two states, including a straight tube grinding state and a bent tube grinding state.

5. A modular steel pipe inner wall segmental polishing apparatus as claimed in claim 4, characterized in that, When the support rod (8) is in the straight pipe grinding state, the first sandpaper (201) is in contact with the inner wall of the steel pipe body (1), and there is a gap between the second sandpaper (301) and the inner wall of the steel pipe body (1).

6. A modular steel pipe inner wall segmental polishing apparatus as claimed in claim 5, characterized in that, When the support rod (8) is in the bending and grinding state, the second sandpaper (301) is pressed against the inner wall of the steel pipe body (1), and there is a gap between the first sandpaper (201) and the inner wall of the steel pipe body (1).

7. The combined steel pipe inner wall segmented grinding device as described in claim 1, characterized in that, The straight tube grinding mechanism (2) also includes a first adjusting rod (203) and a first adjusting tube (204). A first support block (202) is installed on the first adjusting rod (203). The first adjusting rod (203) and the first adjusting tube (204) are slidably engaged. The first adjusting tube (204) is installed on the insert rod.

8. A modular steel pipe inner wall segmental polishing apparatus as claimed in claim 7, characterized in that, The bending and grinding mechanism (3) further includes a second adjusting rod (303) and a second adjusting tube (304). The second support block (302) is installed on the second adjusting rod (303), the second adjusting rod (303) is inserted into the second adjusting tube (304), and the second adjusting tube (304) is installed on the insert rod.

9. A modular steel pipe inner wall segmental polishing apparatus as claimed in claim 8, characterized in that, The spacing adjustment mechanism includes a rotating frame (4), a support base, a lower adjustment frame (5), an upper adjustment frame (6), and an adjustment motor (7). The rotating frame (4) is rotatably mounted on the support base. The output end of the adjustment motor (7) is connected to the rotating frame (4). Two connecting shafts are inserted into both ends of the rotating frame (4). One connecting shaft is inserted into the vertically distributed lower adjustment slot in the lower adjustment frame (5), and the other connecting shaft is inserted into the vertically distributed upper adjustment slot in the upper adjustment frame (6). The lower adjustment frame (5) is mounted on the first adjustment rod (203), and the upper adjustment frame (6) is mounted on the second adjustment rod (303).

10. A segmented polishing device for the interior wall of a steel pipe according to claim 1, wherein The support rod (8) is provided with a grip (9) and an elastic component (10) on its outer side. The grip (9) is rotatably connected to the support rod (8). There are two elastic components (10), and the two elastic components (10) are respectively installed in two directions where the support rod (8) can move.

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