Metal pipeline inner wall polishing tool
By designing the inner wall grinding tooling of metal pipes with adjustable grinding components and screw rotation mechanism, the problem of uniform specifications of grinding tooling in the prior art cannot adapt to metal pipes with different inner diameters is solved, and efficient and simple grinding of metal pipe inner walls is achieved.
Patent Information
- Application Number
- CN202421170677.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The specifications of existing metal pipe grinding tools are uniform, and they cannot adapt to metal pipes of different inner diameters, resulting in complex operation and low adaptability, and the grinding quality of the inner wall of the metal pipe cannot be guaranteed.
A metal pipe inner wall grinding tool is designed including a rotating shaft and an adjustable grinding assembly, which moves the grinding sheets away from each other by forward rotating screws and adapts metal pipes of different inner diameters through the adjustment assembly.
The four grinding sheets are adjusted in pitch, adapting to metal pipes of different inner diameters. The grinding process is simple and easy to operate and has high adaptability, ensuring high-quality grinding of the inner wall of the metal pipe.
Smart Images
Figure CN222511619U_ABST
Abstract
Description
Technical Field
[0001] The utility model specifically relates to a tool for grinding the inner wall of a metal pipeline. Background Art
[0002] Metal pipes are a kind of material widely used in various industrial fields. They can be made of different metals, such as aluminum, phosphor bronze, carbon steel, stainless steel, etc., and have various shapes, including straight pipes, corrugated pipes, porous pipes, etc. Each shape has its specific use. Not only can different sizes, steel pipe materials and different surface forms be provided according to the specific needs of customers, but also surface treatment can be performed to meet specific use requirements. Before using metal pipes, there are strict requirements on the smoothness and defect-freeness of the inner surface. Therefore, in most cases, the inner surface of the finished metal pipe needs to be polished to ensure the smoothness of the inner surface of the finished pipe, reduce or eliminate defects, so as to ensure the normal use of the metal pipe in the later stage and its service life;
[0003] However, the current grinding tools generally have uniform structures, and one specification is only suitable for metal pipes with one inner diameter. When metal pipes with different inner diameters need to be polished, it is necessary to use grinding tools of various specifications. The operation is complicated and the adaptability is low. The grinding quality of the inner wall of the metal pipe cannot be guaranteed, and improvement is needed.
[0004] Therefore, it is necessary to invent a metal pipe inner wall grinding tool to solve the above problems. Utility Model Content
[0005] (I) Purpose of the utility model
[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a metal pipe inner wall grinding tool. By rotating two screws in the forward direction, four grinding plates are moved away from each other. At this time, the motor can be directly started to drive the four grinding plates to grind the inner wall of the metal pipe. The spacing between the four grinding plates of the grinding tool is adjustable, which can adapt to the grinding of metal pipes with different inner diameters. The whole process is simple and easy to operate, and has high adaptability.
[0007] (II) Technical solution
[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal pipe inner wall grinding tool, comprising a rotating shaft and a grinding component arranged on the rotating shaft;
[0009] The grinding assembly includes four cylinders installed at the ends of the rotating shaft, a slide plate inside the cylinder that can slide along the length direction of the cylinder, a connecting rod installed on the top of the slide plate and can slide out of the cylinder along the length direction of the cylinder, and a grinding sheet connected to the end of the connecting rod;
[0010] An adjusting assembly is also installed on the outer side of the rotating shaft to control the stroke of the grinding sheet sliding out of the cylinder to adapt to the grinding of the inner wall of metal pipes with different inner diameters.
[0011] Preferably, the four columns are arranged in a cross shape at the end of the rotating shaft, and each column is provided with a sliding groove for the sliding plate to slide, and each column is provided with a sliding hole for the connecting rod to slide on the side wall away from the rotating shaft, and the cross-sectional area of the sliding hole is smaller than the cross-sectional area of the sliding groove.
[0012] Preferably, the adjustment components are provided in two groups, respectively adjusting two longitudinally distributed columns and two transversely distributed columns.
[0013] Preferably, the two groups of adjustment components each include a plate body connected to both sides of the rotating shaft, a strip plate that can slide along the length direction of the plate body, and a screw rod that passes through the two strip plates and is connected to the two plate bodies.
[0014] Preferably, the side of the strip plate away from the plate body is connected to the adjacent slide plate, and the side of the plate body close to the column is provided with a clearance groove for the strip plate to slide, and each column is also provided with a strip hole for the strip plate to slide on the side close to the plate body.
[0015] Preferably, each of the screw rods passes through a bearing arrangement, and bearings are arranged at the connection between the screw rod and the rotating shaft and at the connection between the screw rod and the plate body.
[0016] Preferably, the strip plate and the screw are arranged to be threadedly connected, and the thread rotation directions of each screw located on both sides of the rotating shaft are opposite.
[0017] Preferably, a motor is provided at the end of the rotating shaft away from the grinding assembly, and the output end of the motor is connected to the end of the rotating shaft through a coupling.
[0018] Compared with the prior art, the above technical solution of the utility model has the following beneficial effects:
[0019] The utility model rotates two screw rods in the forward direction so that the four grinding discs move away from each other, and the effective grinding range of the grinding discs is increased, so that the grinding discs can fit the inner walls of metal pipes with different inner diameters, and the two grinding discs distributed laterally are controlled by the same screw rod, and the two grinding discs distributed longitudinally are also controlled by the same screw rod, that is, the expansion strokes of the two grinding discs in the upper and lower directions are consistent, and the expansion strokes of the two grinding discs in the front and rear directions are also consistent, so that when the four grinding discs are expanded, the rotating shaft just coincides with the axis of the metal pipe. At this time, the motor can be directly started to drive the four grinding discs to grind the inner wall of the metal pipe. The spacing between the four grinding discs of the grinding tool is adjustable, which can adapt to the grinding of metal pipes with different inner diameters. The whole process is simple and easy to operate, and has high adaptability. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0022] Figure 2 This is a schematic diagram of the connection structure between the column and the slide plate of the utility model;
[0023] Figure 3 It is a schematic diagram of the connection structure of the slide plate and the strip plate of the utility model.
[0024] Description of reference numerals:
[0025] 1 rotating shaft, 21 column, 22 slide plate, 23 connecting rod, 24 grinding sheet, 31 plate body, 32 strip plate, 33 screw rod, 4 motor. DETAILED DESCRIPTION
[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0027] The utility model provides Figure 1-3 The tool for grinding the inner wall of a metal pipe shown in the figure comprises a rotating shaft 1 and a grinding component arranged on the rotating shaft 1;
[0028] The grinding assembly includes four columns 21 installed at the ends of the rotating shaft 1, a slide plate 22 inside the columns 21 that can slide along the length direction of the columns 21, a connecting rod 23 installed on the top of the slide plate 22 and can slide out of the columns 21 along the length direction of the columns 21, and a grinding sheet 24 connected to the end of the connecting rod 23;
[0029] An adjustment component is also installed on the outside of the rotating shaft 1, and there are two groups of adjustment components. The two groups of adjustment components include a plate body 31 connected to both sides of the rotating shaft 1, a strip plate 32 that can slide along the length direction of the plate body 31, and a screw rod 33 that passes through the two strip plates 32 and is connected to the two plate bodies 31. The two longitudinally distributed columns 21 and the two transversely distributed columns 21 can be adjusted respectively to control the stroke of the grinding sheet 24 sliding out of the column 21 to adapt to the inner wall grinding of metal pipes with different inner diameters.
[0030] In one embodiment, the four columns 21 are arranged in a cross shape at the end of the rotating shaft 1, and each of the columns 21 is provided with a sliding groove for the sliding plate 22 to slide, and each of the side walls of the columns 21 away from the rotating shaft 1 is provided with a sliding hole for the sliding of the connecting rod 23, and the cross-sectional area of the sliding hole is smaller than the cross-sectional area of the sliding groove, so that the sliding plate 22 can limit the sliding stroke of the connecting rod 23 to ensure the stability of the connecting rod 23 when sliding.
[0031] In one embodiment, the side of the strip plate 32 away from the plate body 31 is connected to the adjacent slide plate 22, and the side of the plate body 31 close to the column 21 is provided with a clearance groove for the strip plate 32 to slide, and each column 21 is also provided with a strip hole for the strip plate 32 to slide on the side close to the plate body 31, so that the strip plate 32 can drive the slide plate 22 to slide synchronously.
[0032] In one embodiment, each of the screws 33 is penetrated by a bearing, and bearings are provided at the connection between the screw 33 and the rotating shaft 1 and at the connection between the screw 33 and the plate body 31 to ensure the stability of the screw 33 when rotating. The strip plates 32 and the screw 33 are arranged to be threadedly connected, and the thread rotation directions of each screw 33 on both sides of the rotating shaft 1 are arranged in opposite directions, so that when the screw 33 rotates, the two strip plates 32 distributed laterally or the two strip plates 32 distributed longitudinally can move away from each other.
[0033] In one embodiment, a motor 4 is provided at the end of the rotating shaft 1 away from the grinding assembly, and the output end of the motor 4 is connected to the end of the rotating shaft 1 through a coupling to facilitate driving the four grinding discs 24 to rotate and realize grinding of the inner wall of the metal pipe.
[0034] The specific implementation method is as follows: when the utility model is used, the staff inserts the grinding assembly as a whole into the metal pipe whose inner wall needs to be polished, and then rotates the screw 33 vertically penetrating the rotating shaft 1 in the positive direction, at which time the two vertically distributed strip plates 32 will move away from each other, thereby driving the two vertically distributed slide plates 22 to move away vertically, so that the ends of the two vertically distributed connecting rods 23 move away from each other, and further, the two vertically distributed grinding sheets 24 move away from each other and abut against the inner wall surfaces of the top and bottom of the metal pipe;
[0035] Then, the staff rotates another screw rod 33 that passes through the rotating shaft 1 in the forward direction. At this time, the two transversely distributed strip plates 32 will also drive the two transversely distributed slide plates 22 to move away from each other, so that the two transversely distributed connecting rods 23 drive the two transversely distributed grinding plates 24 to move away from each other and contact the inner wall surfaces of the front and rear parts of the metal pipe. At this time, the four grinding plates 24 are in contact with the inner wall of the metal pipe respectively, and the bearing coincides with the axis of the metal pipe.
[0036] The staff starts the motor 4 to rotate its output end, and then drives the rotating shaft 1 to rotate through the coupling, and further makes the four grinding discs 24 rotate synchronously to grind the inner wall of the metal pipe. The whole process is simple and easy to operate. After the inner wall of the metal pipe is polished, the staff rotates the two screws 33 in the opposite direction to make the four grinding discs 24 close to each other again, and then the grinding tool can be directly pulled out of the metal pipe for the next use.
[0037] This implementation specifically solves the problem of current grinding tools in the prior art, which generally have a unified structure and one specification is only suitable for metal pipes with one inner diameter. When metal pipes with different inner diameters need to be polished, it is necessary to use grinding tools of various specifications, which are complicated to operate and have low adaptability, and the grinding quality of the inner wall of the metal pipe cannot be guaranteed, which is a problem that needs to be improved.
[0038] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A tool for grinding the inner wall of a metal pipe, characterized in that: It comprises a rotating shaft (1) and a grinding component arranged on the rotating shaft (1); The grinding assembly comprises four columns (21) mounted at the ends of the rotating shaft (1), a slide plate (22) inside the columns (21) and capable of sliding along the length direction of the columns (21), a connecting rod (23) mounted on the top of the slide plate (22) and capable of sliding out of the columns (21) along the length direction of the columns (21), and a grinding sheet (24) connected to the ends of the connecting rods (23); An adjustment component is also installed on the outer side of the rotating shaft (1) for controlling the travel of the grinding sheet (24) sliding out of the column (21) to adapt to the grinding of the inner wall of metal pipes with different inner diameters.
2. A metal pipe inner wall grinding tool according to claim 1, characterized in that: The four columns (21) are arranged in a cross shape at the end of the rotating shaft (1), and each column (21) is provided with a slide groove for the sliding plate (22) to slide inside, and a side wall of each column (21) away from the rotating shaft (1) is provided with a slide hole for the sliding of the connecting rod (23), and the cross-sectional area of the slide hole is smaller than the cross-sectional area of the slide groove.
3. A metal pipe inner wall grinding tool according to claim 2, characterized in that: The adjustment components are provided in two groups, respectively adjusting two longitudinally distributed columns (21) and two transversely distributed columns (21).
4. A metal pipe inner wall grinding tool according to claim 3, characterized in that: The two sets of adjustment components each comprise a plate body (31) connected to both sides of the rotating shaft (1), a strip plate (32) that can slide along the length direction of the plate body (31), and a screw rod (33) that passes through the two strip plates (32) and is connected to the two plate bodies (31).
5. A metal pipe inner wall grinding tool according to claim 4, characterized in that: The side of the strip plate (32) away from the plate body (31) is connected to the adjacent slide plate (22), and the side of the plate body (31) close to the column (21) is provided with a clearance groove for the strip plate (32) to slide, and each column (21) is also provided with a strip hole for the strip plate (32) to slide on the side close to the plate body (31).
6. A metal pipe inner wall grinding tool according to claim 4, characterized in that: Each of the screw rods (33) passes through a bearing arrangement, and bearings are arranged at the connection between the screw rod (33) and the rotating shaft (1) and at the connection between the screw rod (33) and the plate body (31).
7. A metal pipe inner wall grinding tool according to claim 4, characterized in that: The strip plate (32) and the screw rod (33) are arranged to be threadedly connected, and the threads of each screw rod (33) are arranged on both sides of the rotating shaft (1) with opposite directions of rotation.
8. The metal pipe inner wall grinding tool according to claim 1, characterized in that: A motor (4) is provided at the end of the rotating shaft (1) away from the grinding assembly, and an output end of the motor (4) is connected to the end of the rotating shaft (1) via a coupling.