CN214264939U

CN214264939U - Steel pipe inner wall grinding device

Info

Publication number: CN214264939U
Application number: CN202021971083.6U
Authority: CN
Inventors: 罗强
Original assignee: Individual
Current assignee: Sichuan Tianyingxing Aviation Technology Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-09-24
Anticipated expiration: 2030-09-10

Abstract

The utility model discloses a steel pipe inner wall grinding device, comprises a workbench and a driving motor, the upper surface of workstation is provided with the recess, sliding fit is connected with the movable block on the recess, the upper surface of movable block is connected with the three-jaw chuck, coaxial fixedly connected with axis of rotation on driving motor's the output shaft, the right-hand member face fixedly connected with screw shaft of axis of rotation, the right-hand member cover of screw shaft is equipped with the screwed pipe, the right-hand member face fixedly connected with circular cone of screw shaft, the side of screwed pipe is provided with a plurality of through-holes, sliding fit is connected with the movable rod in every through-hole, the movable rod is connected with the side sliding fit of circular cone, the other end of movable rod is connected with the polishing piece, the side of movable rod is connected with the. The utility model discloses a setting of threaded spindle, screwed pipe, the piece of polishing, circular cone and movable rod, the movable rod can drive the piece of polishing flexible, and then can polish to the inner wall of different diameter steel pipes.

Description

Steel pipe inner wall grinding device

Technical Field

The utility model relates to a steel pipe machining technical field specifically relates to a steel pipe inner wall grinding device.

Background

Steel pipes are economical steel materials and can be used for transporting fluids and powdery solids, exchanging heat energy and manufacturing mechanical parts, and also can be used for manufacturing building structure net frames, pillars and mechanical supports. The steel pipe is used for manufacturing the highway bridge, so that steel can be saved, the construction is simplified, the area of a coating protective layer can be greatly reduced, and the investment and the maintenance cost are saved.

The inner wall of the steel pipe needs to be polished in the production process of the steel pipe, the existing steel pipe inner wall polishing device cannot polish the steel pipes with different diameters, and when another type of steel pipe is polished, a polishing head needs to be replaced frequently, so that the working efficiency is reduced.

Therefore, it is desirable to provide a polishing device for the inner wall of a steel pipe, which aims to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a steel pipe inner wall grinding device to solve the problem that exists among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a steel pipe inner wall grinding device, includes workstation and driving motor, the upper surface of workstation is provided with the recess, and sliding fit is connected with the movable block on the recess, and the last fixed surface of movable block is connected with three-jaw chuck, coaxial fixedly connected with axis of rotation on driving motor's the output shaft, the right-hand member face fixedly connected with screw shaft of axis of rotation, the right-hand member cover of screw shaft are equipped with the screwed pipe, and the right-hand member face fixedly connected with circular cone of screw shaft, the side of screwed pipe is provided with a plurality of through-holes, and sliding fit is connected with the movable rod in every through-hole, and the movable rod is connected with the side sliding fit of circular cone, and the other end of movable rod is connected with the polishing piece, and the side of movable rod is connected with the fixed plate, and the fixed plate passes through reset spring with the inner wall of screwed pipe and is connected.

As a further aspect of the present invention, the through-holes are distributed in a circumferential array about the center line of the threaded pipe, and the movable rods are also distributed in a circumferential array about the center line of the threaded pipe, and the number of the movable rods is the same as the number of the through-holes.

As a further aspect of the present invention, the fixed plate is connected to one end of the movable rod near the cone, the movable rod runs through the through hole, and the polishing sheet is located outside the threaded pipe.

As a further scheme of the utility model, the diameter of circular cone bottom surface is less than the diameter of screw thread axle, the bottom surface of circular cone and the terminal surface fixed connection of screw thread axle, reset spring's flexible direction is the same with the moving direction of movable rod.

As the utility model discloses a further scheme, fixed mounting has the bearing frame on the workstation, is provided with the bearing in the bearing frame, the lateral surface fixed connection of the hole axis of rotation of bearing, setting up of bearing frame and bearing have improved the utility model discloses an overall stability.

As a further scheme of the utility model, the quantity of movable block and three-jaw chuck is two, and the centre gripping steel pipe is more firm like this, be connected with the moving handle on the movable block, the moving handle is used for promoting the movable block.

As a further aspect of the present invention, the inner surface of the threaded pipe is provided with threads, the threaded pipe is connected with the threaded shaft by means of thread fit, and the cone is located inside the threaded pipe.

As a further aspect of the present invention, the center line of the three-jaw chuck and the center line collineation of the threaded pipe are set, the center line of the threaded pipe and the center line collineation of the cone are set, and the center line of the cone and the center line collineation of the rotation axis are set.

As a further scheme of the utility model, the below of workstation is provided with several supporting legs, driving motor's below is provided with motor support, motor support fixed mounting at the upper surface of workstation.

To sum up, the beneficial effects of the utility model are that:

the utility model can drive the polishing sheet to stretch out and draw back through the arrangement of the threaded shaft, the threaded pipe, the polishing sheet, the cone and the movable rod, thereby polishing the inner walls of steel pipes with different diameters; through the setting of reset spring and fixed plate, the movable rod can resume the normal position, makes things convenient for next use.

Drawings

Fig. 1 is a schematic front structural view of a steel pipe inner wall polishing device.

FIG. 2 is a connection relationship diagram of a threaded shaft and a threaded pipe in the steel pipe inner wall grinding device.

Fig. 3 is a schematic view of the internal structure of fig. 2 in another state.

Reference numerals: 1-supporting legs, 2-workbench, 3-groove, 4-moving block, 5-moving handle, 6-three-jaw chuck, 7-threaded shaft, 8-threaded pipe, 9-polishing piece, 10-rotating shaft, 11-bearing, 12-bearing seat, 13-driving motor, 14-motor bracket, 15-cone, 16-moving rod, 17-reset spring, 18-fixing plate and 19-through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following description of the present invention with reference to the accompanying drawings and specific embodiments will explain the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1, 2 and 3, a steel pipe inner wall grinding device comprises a worktable 2 and a driving motor 13, the upper surface of the workbench 2 is provided with a groove 3, the groove 3 is connected with a moving block 4 in a sliding fit manner, the upper surface of the moving block 4 is fixedly connected with a three-jaw chuck 6, a rotating shaft 10 is coaxially and fixedly connected to an output shaft of the driving motor 13, a threaded shaft 7 is fixedly connected to the right end face of the rotating shaft 10, a threaded pipe 8 is sleeved at the right end of the threaded shaft 7, a cone 15 is fixedly connected to the right end face of the threaded shaft 7, the side of screwed pipe 8 is provided with a plurality of through-holes 19, and sliding fit is connected with movable rod 16 in every through-hole 19, and movable rod 16 is connected with the side sliding fit of circular cone 15, and the other end of movable rod 16 is connected with polishing piece 9, and the side of movable rod 16 is connected with fixed plate 18, and fixed plate 18 passes through reset spring 17 with the inner wall of screwed pipe 8 and is connected.

A plurality of said through holes 19 are distributed in a circumferential array with respect to the centre line of the threaded pipe 8, a plurality of said movable rods 16 are also distributed in a circumferential array with respect to the centre line of the threaded pipe 8, the number of the movable rods 16 is the same as the number of the through holes 19.

The fixed plate 18 is connected to one end of the movable rod 16 close to the cone 15, the movable rod 16 penetrates through the through hole 19, and the polishing disc 9 is positioned outside the threaded pipe 8.

The diameter of the bottom surface of the cone 15 is smaller than that of the threaded shaft 7, the bottom surface of the cone 15 is fixedly connected with the end surface of the threaded shaft 7, and the extension direction of the return spring 17 is the same as the moving direction of the movable rod 16.

The inner surface of the threaded pipe 8 is provided with threads, the threaded pipe 8 is connected with the threaded shaft 7 in a threaded fit mode, and the cone 15 is located on the inner side of the threaded pipe 8.

The central line of the three-jaw chuck 6 and the central line of the threaded pipe 8 are arranged in a collinear way, the central line of the threaded pipe 8 and the central line of the cone 15 are arranged in a collinear way, and the central line of the cone 15 and the central line of the rotating shaft 10 are arranged in a collinear way.

Example 2

Referring to fig. 1, 2 and 3, the present embodiment is further described with respect to a steel pipe inner wall polishing apparatus described in specific example 1, in the present embodiment, a plurality of support legs 1 are disposed below a worktable 2, a motor support 14 is disposed below a driving motor 13, and the motor support 14 is fixedly mounted on an upper surface of the worktable 2; a bearing seat 12 is fixedly arranged on the workbench 2, a bearing 11 is arranged in the bearing seat 12, the outer side surface of an inner hole rotating shaft 10 of the bearing 11 is fixedly connected, and the arrangement of the bearing seat 12 and the bearing 11 improves the overall stability of the utility model; the quantity of movable block 4 and three-jaw chuck 6 is two, and the centre gripping steel pipe is more firm like this, be connected with removal handle 5 on the movable block 4, removal handle 5 is used for promoting movable block 4, and other structures of this embodiment and connected mode are the same with utility model embodiment 1 completely.

The utility model discloses working process does: firstly, clamping a steel pipe to be processed by using a three-jaw chuck 6, then moving a moving block 4 to enable a polishing piece 9 to enter the steel pipe, then rotating a threaded pipe 8 by hand to enable the threaded pipe 8 to move relative to a threaded shaft 7, moving a movable rod 16 on the surface of a cone 15, extending the movable rod 16 outwards until the polishing piece 9 is in contact with the inner wall of the steel pipe, and starting a driving motor 13 at the moment to polish the inner wall of the steel pipe; after polishing, the steel pipe is taken down, the threaded pipe 8 is rotated by hand again, the rotating direction is opposite to that before, and the movable rod 16 is contracted towards the inside of the threaded pipe 8 under the action of the return spring 17, so that the steel pipe is convenient to use when polishing next time.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A steel pipe inner wall polishing device comprises a workbench (2) and a driving motor (13), and is characterized in that a groove (3) is formed in the upper surface of the workbench (2), a moving block (4) is connected to the groove (3) in a sliding fit manner, a three-jaw chuck (6) is fixedly connected to the upper surface of the moving block (4), a rotating shaft (10) is fixedly connected to the output shaft of the driving motor (13) coaxially, a threaded shaft (7) is fixedly connected to the right end face of the rotating shaft (10), a threaded pipe (8) is sleeved at the right end of the threaded shaft (7), a cone (15) is fixedly connected to the right end face of the threaded shaft (7), a plurality of through holes (19) are formed in the side face of the threaded pipe (8), a movable rod (16) is connected to each through hole (19) in a sliding fit manner, and the movable rod (16) is connected to the side face of the cone (15) in a sliding fit manner, the other end of the movable rod (16) is connected with a polishing disc (9), the side surface of the movable rod (16) is connected with a fixed plate (18), and the fixed plate (18) is connected with the inner wall of the threaded pipe (8) through a return spring (17).

2. The steel pipe inner wall grinding device according to claim 1, wherein a plurality of the through holes (19) are distributed in a circumferential array with respect to a center line of the threaded pipe (8), a plurality of the movable rods (16) are also distributed in a circumferential array with respect to the center line of the threaded pipe (8), and the number of the movable rods (16) is the same as the number of the through holes (19).

3. The steel pipe inner wall grinding device according to claim 2, wherein the fixing plate (18) is connected to one end of a movable rod (16) close to the cone (15), the movable rod (16) penetrates through a through hole (19), and the grinding sheet (9) is located on the outer side of the threaded pipe (8).

4. The steel pipe inner wall grinding device is characterized in that the diameter of the bottom surface of the cone (15) is smaller than that of the threaded shaft (7), and the bottom surface of the cone (15) is coaxially and fixedly connected with the end surface of the threaded shaft (7).

5. The steel pipe inner wall grinding device according to claim 1, characterized in that a bearing seat (12) is fixedly installed on the workbench (2), a bearing (11) is arranged in the bearing seat (12), and an inner hole rotating shaft (10) of the bearing (11) is fixedly connected with the outer side surface.

6. The grinding device for the inner wall of the steel pipe as claimed in claim 1, wherein the number of the moving block (4) and the three-jaw chuck (6) is two, and a moving handle (5) is connected to the moving block (4).

7. The steel pipe inner wall grinding device is characterized in that the inner surface of the threaded pipe (8) is provided with threads, the threaded pipe (8) is in threaded fit connection with the threaded shaft (7), and the cone (15) is located on the inner side of the threaded pipe (8).

8. The steel pipe inner wall grinding device according to claim 1, wherein the center line of the three-jaw chuck (6) is arranged in line with the center line of the threaded pipe (8), the center line of the threaded pipe (8) is arranged in line with the center line of the cone (15), and the center line of the cone (15) is arranged in line with the center line of the rotating shaft (10).

9. The steel pipe inner wall grinding device is characterized in that a plurality of supporting legs (1) are arranged below the workbench (2), a motor support (14) is arranged below the driving motor (13), and the motor support (14) is fixedly installed on the upper surface of the workbench (2).