阅读说明：本技术 一种管道内壁切削光整装置及方法 (Device and method for cutting and finishing inner wall of pipeline ) 是由 淮文博 于 2019-09-27 设计创作，主要内容包括：本发明公开的一种管道内壁切削光整装置,包括第二橡胶塞,第二橡胶塞内部设有空腔,第二橡胶塞安装有电机,电机的转轴上安装有活动轴副,活动轴副连接万向节,万向节安装有刀具。通过采用第二橡胶塞,该第二橡胶塞能够适应不同弯度的管道,第二橡胶塞内安装电机,电机通过活动轴副、万向节连接刀具,确保第二橡胶塞在转弯的时候刀具也能够随之转向,对管道内壁进行切削光整。一种管道内壁切削光整方法,可以对不同类型管道内壁进行切削光整加工,其能够自适应各种非极端小曲率半径的弯管的内壁,并进行切削光整。(The invention discloses a pipe inner wall cutting and finishing device which comprises a second rubber plug, wherein a cavity is formed in the second rubber plug, a motor is installed on the second rubber plug, a movable shaft pair is installed on a rotating shaft of the motor and connected with a universal joint, and a cutter is installed on the universal joint. Through adopting the second rubber buffer, this second rubber buffer can adapt to the pipeline of different degrees of curvature, installs the motor in the second rubber buffer, and the motor passes through the vice, the universal joint of loose axle and connects the cutter, ensures that the cutter also can turn to thereupon when the second rubber buffer is in the turn, cuts the finish to the pipeline inner wall. A cutting and finishing method for the inner wall of pipeline features that the inner wall of different pipeline can be cut and finished, and the inner wall of elbow pipe with non-extremely small curvature radius can be self-adaptive.)

1. The utility model provides a pipe inner wall cutting and finishing device, its characterized in that, including second rubber buffer (5), second rubber buffer (5) is inside to be equipped with cavity (501), motor (8) are installed in second rubber buffer (5), install the loose axle pair (9) in the pivot of motor (8), universal joint (4) are connected in the vice (9) of loose axle, cutter (15) are installed in universal joint (4).

2. The pipe inner wall cutting and finishing device according to claim 1, wherein the knuckle (4) comprises an input shaft (10) and an output shaft (12); the input shaft (10) is connected with the output shaft (12) through a universal joint cross (11);

the input shaft (10) is connected with the movable shaft pair (9), and the output shaft (12) is connected with the cutter (15).

3. The pipe inner wall cutting and finishing device according to claim 2, wherein the output shaft (12) is connected with a bearing (13) in a matching way; and the outer ring of the bearing (13) is connected with a bearing hoop (14).

4. The pipe inner wall cutting and finishing device according to claim 3, wherein the bearing clamp (14) is arranged at the opening of the cavity (501); the outer ring of the bearing hoop (14) is in interference fit with the cavity (501).

5. The pipe inner wall cutting and finishing device according to claim 1, wherein the radial distance of the cutter (15) is equal to the diameter of the second rubber plug (5).

6. The pipe inner wall cutting and finishing device according to claim 2, wherein the movable shaft pair (9) comprises a movable shaft body (901), a first shaft hole (902) is axially formed in the movable shaft body (901), and a rotating shaft of the motor (8) is installed in the first shaft hole (902); a first sliding key groove (903) is formed in the shaft hole (902).

7. The pipe inner wall cutting and finishing device according to claim 6, wherein the input shaft (10) comprises an input shaft body (1001), the surface of the input shaft body (1001) is provided with a sliding key (1002), and the sliding key (1002) can be embedded into the first sliding key groove (903);

a first lug (1003) is integrally connected to the end of the input shaft body (1001), and a first hinge hole (1004) is formed in the first lug (1003);

the output shaft (12) comprises an output shaft body (1201), one end part of the output shaft body (1201) is integrally connected with a second lug (1203), and a second hinge hole (1204) is formed in the second lug (1203);

the second hinge hole (1004) and the first hinge hole (1204) are both connected with the universal joint cross (11);

the output shaft body (1201) is welded with a key (1202) on the surface.

8. The pipe inner wall cutting and finishing device as claimed in claim 7, wherein the cutter (15) comprises a cutter body, a plurality of cutter teeth are distributed on the cutter body along the circumferential direction of the cutter body, and an arc-shaped chip winding groove (1503) is arranged at the end part of each cutter tooth.

9. The pipe inner wall cutting and finishing device of claim 8, wherein the cutter body further comprises a second shaft hole (1501) formed in the center, the second shaft hole (1501) is provided with a key slot (1502), the second shaft hole (1501) is matched with the output shaft body (1201), and the key slot (1502) is matched with the key (1202).

10. A method for cutting and finishing the inner wall of a pipeline is characterized in that the device for cutting and finishing the inner wall of the pipeline based on any one of claims 1 to 9 comprises the following specific steps:

step 1: initializing a working state; selecting the sizes of the second rubber plug (5) and the cutter (15) to be equal to the inner diameter of the pipeline (1); slowly plugging a cutter (15) and a second rubber plug (5) into the pipeline (1); starting the motor (8), wherein the motor (8) drives the cutter (15) to rotate and keeps a cutting state;

step 2: the inner wall of the pipeline is cut and smoothed and is turned in a cutting state; the second rubber plug (5) advances towards the interior of the pipeline (1), and the advancing path of the second rubber plug (5) is matched with the path of the pipeline (1); when the pipeline (1) needs to turn, the front end of the second rubber plug (5) turns, namely, the bearing hoop (14) of the second rubber plug (5) synchronously deflects, the bearing hoop (14) drives the bearing (13) and the output shaft (10) to turn, the cutting advancing direction of the cutter (15) also changes along with the bending of the pipeline (1), and the turning of the cutting state is realized.

Technical Field

The invention belongs to the technical field of pipeline finishing, and relates to a device and a method for cutting and finishing the inner wall of a pipeline.

Background

The pipeline is a common part in production and life, and comprises a straight pipe and an elbow pipe. The metal long bent pipe is formed by sheet metal forming or sectional welding, and the inner wall of the pipeline usually has some defects due to the production process; for the bent pipe processed by the sheet metal, the stress concentration is obvious at the place with smaller curvature radius, and the microcracks and folds of the pipeline are easy to cause; for the bent pipe processed by welding, the inner wall of the pipeline at the welding position is not smooth; the defects and the non-smooth places belong to the positions of multiple faults of the pipeline, such as pipeline cracks and liquid leakage and air leakage. In order to solve the problem, the surface defect layer is removed by a mechanical finishing method which is generally adopted at present, compared with the original size, the surface defect layer only usually has lower strength loss, but a plurality of surface defects and stress concentration can be eliminated, and the reliability and the service life of the structure are improved.

For the inner wall of the pipeline, the finishing processing difficulty mainly shows three aspects, namely that the narrow and open space in the pipeline is poor, and how to send the processing device into the pipeline; secondly, if the pipeline is bent, how to make the processing device move in the bent pipe and work normally; and thirdly, how to ensure that the finishing at each curvature position keeps the diameter of the inner wall of the pipeline consistent.

Disclosure of Invention

The invention aims to provide a device for cutting and finishing the inner wall of a pipeline, which can finish the inner wall of a bent pipe.

The invention also aims to provide a method for cutting and polishing the inner wall of the pipeline.

The invention adopts a technical scheme that: the utility model provides a pipe inner wall cutting burnishing device, includes the second rubber buffer, the inside cavity that is equipped with of second rubber buffer, and the motor is installed to the second rubber buffer, installs the loose axle pair in the pivot of motor, and the universal joint is connected to the loose axle pair, and the cutter is installed to the universal joint.

The present invention is also characterized in that,

the universal joint comprises an input shaft and an output shaft; the input shaft is connected with the output shaft through a universal joint cross.

The input shaft is connected with the movable shaft pair, and the output shaft is connected with the cutter.

The output shaft is connected with a bearing in a matching way; the outer ring of the bearing is connected with a bearing hoop.

The bearing hoop is arranged at the opening of the cavity; the outer ring of the bearing hoop is in interference fit with the cavity.

The radial distance of the cutter is equal to the diameter of the second rubber plug.

The movable shaft pair comprises a movable shaft body, a first shaft hole is axially formed in the movable shaft body, and a rotating shaft of the motor is arranged in the first shaft hole; the inside in shaft hole is equipped with first sliding key groove.

The input shaft comprises an input shaft body, the surface of the input shaft body is provided with a sliding key, and the sliding key can be embedded into the first sliding key groove;

the end part of the input shaft body is integrally connected with a first lug, and a first hinge hole is formed in the first lug;

the output shaft comprises an output shaft body, one end part of the output shaft body is integrally connected with a second lug, and a second hinge hole is formed in the second lug;

the second hinge hole and the first hinge hole are both connected with the universal joint in a cross manner;

the surface of the output shaft body is welded with a key.

The cutter includes the cutter body, and the cutter body distributes along its circumferencial direction has a plurality of sword tooth, and the tip of every sword tooth all is equipped with arc chip groove.

The cutter body still includes that the center has seted up the second shaft hole, and the second shaft hole is equipped with the keyway, and the second shaft hole cooperatees with the output axis body, and the keyway cooperatees with the key.

The other technical scheme adopted by the invention is as follows: a pipeline inner wall cutting and finishing method is based on a pipeline inner wall cutting and finishing device and comprises the following specific steps:

step 1: initializing a working state; selecting the second rubber plug and the cutter to be equal to the inner diameter of the pipeline in size; slowly plugging a cutter and a second rubber plug into the pipeline; starting a motor, wherein the motor drives the cutter to rotate and keeps a cutting state;

step 2: the inner wall of the pipeline is cut and smoothed and is turned in a cutting state; the second rubber plug advances towards the interior of the pipeline, and the advancing path of the second rubber plug is matched with the path of the pipeline; when the pipeline need turn, the front end of second rubber buffer also turns round along with it, and the bearing clamp of second rubber buffer deflects in step promptly, and bearing clamp strap movable bearing, output shaft turn to, and the cutter cutting advancing direction also changes along with the bending of pipeline, realizes the turn of cutting state.

The invention has the beneficial effects that: according to the device for cutting and finishing the inner wall of the road, the second rubber plug is adopted and can adapt to pipelines with different curvatures, the motor is arranged in the second rubber plug and is connected with the cutter through the movable shaft pair and the universal joint, so that the cutter can turn along with the second rubber plug when the second rubber plug turns, and the inner wall of the pipeline is cut and finished. A cutting and finishing method for the inner wall of pipeline features that the inner wall of different pipeline can be cut and finished, and the inner wall of elbow pipe with non-extremely small curvature radius can be self-adaptive.

Drawings

FIG. 1 is a schematic structural view of a pipe inner wall cutting and finishing device according to the present invention;

FIG. 2 is a perspective view of a pipe inner wall cutting and finishing apparatus according to the present invention;

FIG. 3 is an exploded view of a pipe inner wall cutting and finishing apparatus according to the present invention;

FIG. 4 is a schematic structural diagram of a third propulsion unit in an embodiment of a pipe inner wall cutting and polishing device according to the present invention.

In the figure, 1, a pipeline, 2, a first rubber plug, 3, a flexible pipe, 301, a pipe wall hole, 4, a universal joint, 5, a second rubber plug, 501, a cavity, 6, a working body, 7, a cavity, 8, a motor, 9, a movable shaft pair, 901, a movable shaft body, 902, a first shaft hole, 903, a first sliding key groove, 10, an input shaft, 1001, an input shaft body, 1002, a sliding key, 1003, a first lug, 11, a universal joint cross, 12, an output shaft, 1201, an output shaft body, 1202, a key, 1203, a second lug, 1204, a second hinge, 13, a bearing, 14, a bearing hoop, 15, a cutter, 1501, a second shaft hole, 1502, a key groove, 1503, an arc-shaped chip winding groove and 16 cables.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The invention provides a pipe inner wall cutting and finishing device which comprises a second rubber plug 5, wherein a cavity 501 is arranged in the second rubber plug 5, a motor mounting groove is arranged in the second rubber plug 5, a motor 8 is arranged in the motor mounting groove, a rotating shaft of the motor 8 is provided with a movable shaft pair 9, the movable shaft pair 9 is connected with an input shaft 10 of a universal joint 4, and an output shaft 12 of the universal joint 4 is provided with a cutter 15, as shown in figures 1-3.

The output shaft 12 of the universal joint 4 is connected with an inner ring of a bearing 13 in a matching way, and the bearing 13 is used for restraining the output shaft 12 of the universal joint to rotate around the axis of the bearing 13.

A bearing yoke 14 is attached to the outer ring of the bearing 13, the bearing yoke 14 being adapted to restrain the outer ring of the bearing 13.

The bearing hoop 14 is arranged at the opening of the cavity 501, and the outer ring of the bearing hoop 14 is in interference fit with the cavity 501.

The radial distance of the cutters 15 is equal to the diameter of the second rubber stopper 5.

As shown in fig. 3, the movable shaft pair 9 includes a movable shaft body 901, a first shaft hole 902 is axially formed in the movable shaft body 901, and a rotating shaft of the motor 8 is installed in the first shaft hole 902; a first sliding key groove 903 is formed in the inner wall of the shaft hole 902 in the direction of a generatrix;

the universal joint 4 comprises an input shaft 10, and the input shaft 10 is connected with an output shaft 12 through a universal joint cross 11;

the input shaft 10 comprises an input shaft body 1001, a sliding key 1002 is welded on the surface of the input shaft body 1001, the sliding key 1002 can be embedded into the first sliding key groove 903, and the sliding key 1002 and the first sliding key groove 903 are in clearance fit; the number of the sliding keys 1002 is matched with the number and distribution of the first sliding key grooves 903;

two first lugs 1003 are integrally connected to the end of the input shaft 1001, and each first lug 1003 is provided with a first hinge hole 1004;

the output shaft 12 comprises an output shaft body 1201, one end part of the output shaft body 1201 is integrally connected with two second lugs 1203, each second lug 1203 is provided with a second hinge hole 1204, and the second hinge holes 1004 and the first hinge holes 1204 are both connected with the universal joint cross 11;

the output shaft body 1201 is welded with a key 1202 on the surface.

The cutter 15 comprises a cutter body, a plurality of cutter teeth are distributed on the cutter body along the circumferential direction of the cutter body, an arc chip coiling groove 1503 is arranged at the end part of each cutter tooth, and the arc chip coiling groove 1503 is used for discharging chips and changing the chip coiling direction;

the cutter body further comprises a second shaft hole 1501 formed in the center in the axial direction, the second shaft hole 1501 is provided with a key groove 1502, the second shaft hole 1501 is matched with the shaft body 1201 of the output shaft 12, and the key groove 1502 is matched with the key 1202.