阅读说明：本技术 一种球墨铸铁用管件内壁清理装置及其使用方法 (Pipe fitting inner wall cleaning device for nodular cast iron and using method thereof ) 是由 方晨 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种球墨铸铁用管件内壁清理装置及其使用方法,包括底座,所述底座顶部一侧连接有支架,所述支架一侧贯穿有转轴,所述转轴与支架通过轴承转动连接,所述转轴外部设置有两个对称分布的清理机构,所述底座顶部远离支架的一侧设有滑台,所述滑台与底座滑动连接,所述滑台顶部设有两个夹持机构,所述清理机构包括固定条,所述固定条设在转轴外侧,所述固定条与转轴平行设置,所述转轴外壁开设有与固定条相对应的固定槽。本发明通过挡板推动固定条,使固定条被收纳入固定槽中,然后通过挡板表面的限位槽,然后在弹簧的作用下固定条被撑开并抵在管件内壁,可以根据可以根据管件内径尺寸自动调节,使用更加方便。(The invention discloses a cleaning device for the inner wall of a pipe fitting for nodular cast iron and a using method thereof. The fixing strip is pushed by the baffle plate to be accommodated in the fixing groove, then the fixing strip is propped open and against the inner wall of the pipe fitting under the action of the spring through the limiting groove on the surface of the baffle plate, and the fixing strip can be automatically adjusted according to the inner diameter of the pipe fitting, so that the use is more convenient.)

1. The utility model provides a pipe fitting inner wall cleaning device for nodular cast iron, includes base (1), its characterized in that: the automatic cleaning device is characterized in that a support (2) is connected to one side of the top of the base (1), a rotating shaft (3) penetrates through one side of the support (2), the rotating shaft (3) is rotatably connected with the support (2) through a bearing, two cleaning mechanisms which are symmetrically distributed are arranged outside the rotating shaft (3), a sliding table (4) is arranged on one side, away from the support (2), of the top of the base (1), the sliding table (4) is slidably connected with the base (1), and two clamping mechanisms are arranged on the top of the sliding table (4);

the cleaning mechanism comprises a fixed strip (5), the fixed strip (5) is arranged on the outer side of the rotating shaft (3), the fixed strip (5) is arranged in parallel with the rotating shaft (3), a fixed groove (6) corresponding to the fixed strip (5) is formed in the outer wall of the rotating shaft (3), two connecting rods (7) distributed in parallel are arranged between the fixed strip (5) and the fixed groove (6), two ends of each connecting rod (7) are hinged to the inner walls of the fixed strip (5) and the fixed groove (6) respectively, and two supporting assemblies which are vertically and symmetrically distributed to a central axis about the fixed strip (5) are arranged between the two connecting rods (7);

the supporting component comprises a sliding groove (8), the sliding groove (8) is formed in the bottom of the inner wall of the fixing groove (6), the sliding block (9) is arranged inside the sliding groove (8) and connected with the sliding groove in a sliding mode, a supporting rod (10) is hinged to the top end of the sliding block (9), one end, far away from the sliding block (9), of the supporting rod (10) extends to the inner side of the fixing strip (5) and is hinged to the fixing strip (5), the supporting rod (10) is inclined towards the center of the fixing strip (5), a spring (11) is arranged on one side of the sliding block (9), and two ends of the spring (11) are respectively connected with the sliding groove (8) and the sliding block (9).

2. The pipe fitting inner wall cleaning device for nodular cast iron according to claim 1, wherein: fixture is including connecting support column (12) at slip table (4) top, support column (12) top is connected with fixed clamp cover (13), fixed clamp cover (13) cross sectional shape sets up to the C shape, fixed clamp cover (13) outside is provided with a plurality of ejector pins (14), ejector pin (14) run through fixed clamp cover (13) and with fixed clamp cover (13) sliding connection.

3. The pipe fitting inner wall cleaning device for nodular cast iron according to claim 2, wherein: the ejector rods (14) are radially distributed about the central axis of the fixed jacket (13), the central axis of the fixed jacket (13) coincides with the central axis of the rotating shaft (3), the movable jackets (15) are arranged on two sides of the fixed jacket (13), a limiting rod (16) penetrates between the two movable jackets (15), the limiting rod (16) is connected with the movable jackets (15) in a sliding mode, and the limiting rod (16) penetrates through the fixed jacket (13) and is fixedly connected with the fixed jacket (13).

4. The pipe fitting inner wall cleaning device for nodular cast iron according to claim 3, wherein: the clamping block (17) is connected to one end, close to the inner side of the fixed clamping sleeve (13), of the ejector rod (14), two movable rods (18) which are symmetrically distributed are hinged to the other end of the ejector rod (14), one ends, far away from the ejector rod (14), of the two movable rods (18) extend to the outer sides of the two movable clamping sleeves (15) respectively, and the movable rods (18) are hinged to the movable clamping sleeves (15).

5. The pipe fitting inner wall cleaning device for nodular cast iron according to claim 3, wherein: a screw rod (19) penetrates between the two movable clamping sleeves (15), the thread turning directions of the two ends of the screw rod (19) are opposite, the two ends of the screw rod (19) are respectively in threaded connection with the two movable clamping sleeves (15), and the screw rod (19) penetrates through the fixed clamping sleeve (13) and is rotationally connected with the fixed clamping sleeve (13).

6. The pipe fitting inner wall cleaning device for nodular cast iron according to claim 1, wherein: one side that slip table (4) top is close to pivot (3) is connected with baffle (20), spacing hole (21) have been seted up on baffle (20) surface, pivot (3) and spacing hole (21) phase-match.

7. The pipe fitting inner wall cleaning device for nodular cast iron according to claim 1, wherein: support (2) one side is connected with motor (22), motor (22) output shaft is connected with pivot (3) transmission, fixed strip (5) outer wall is connected with the clearance emery cloth.

8. The pipe fitting inner wall cleaning device for nodular cast iron according to claim 1, wherein: one side that support (2) were kept away from in slip table (4) is equipped with fixing base (23), establish at base (1) top fixing base (23), fixing base (23) and base (1) fixed connection, it is connected with lead screw (24) to rotate between fixing base (23) and support (2), lead screw (24) both ends rotate with fixing base (23) and support (2) respectively and are connected, lead screw (24) run through slip table (4) and with slip table (4) threaded connection.

9. The pipe inner wall cleaning device for nodular cast iron according to claim 8, wherein: the front side of the bracket (2) is provided with a crank (25), and the crank (25) is in transmission connection with the screw rod (24) through a bevel gear.

10. The use method of the pipe inner wall cleaning device for nodular cast iron according to any one of claims 1 to 9 is characterized in that: the method comprises the following steps:

(A) positioning the pipe fitting: the pipe fitting to be cleaned is flatly placed on the two fixed jackets 13, the screw rods 19 are rotated, the thread turning directions of the two ends of each screw rod 19 are opposite, the movable jackets 15 on the two sides of each fixed jacket 13 can be driven to be far away from the fixed jackets 13, at the moment, the movable jackets 15 pull one ends of the movable rods 18 to be far away from the ejector rods 14, the other ends of the movable rods 18 pull the ejector rods 14 to move towards the inner sides of the fixed jackets 13, so that the clamp blocks 17 at one ends of the ejector rods 14 extrude and clamp the pipe fitting, and meanwhile, the ejector rods 14 are driven by the movable jackets 15 and the movable rods 18 to synchronously move, so that the center of the pipe fitting is superposed with the central axis of the fixed jackets 13;

(B) and adjusting the rotating shaft: a hand crank 25 drives the screw rod 24 through a bevel gear, so that the sliding table 4 slides along the screw rod 24 to a direction close to the bracket 2, and one end of the rotating shaft 3 close to the baffle is inserted into the limiting hole 21;

(C) and folding in the fixing strip: along with the insertion of the rotating shaft 3, one end of the fixing strip 5, which is close to the baffle, abuts against the surface of the baffle 20 and is supported by the two supporting rods 10, the sliding block 9 at the other end of each supporting rod 10 is under the elastic action of the springs 11, the elastic forces of the two springs 11 are offset, the fixing strip 5 is located at the outermost end, along with the continuous movement of the sliding table 4, the fixing strip 5 is pushed by the baffle 20 to move towards the direction of the motor 22, the fixing strip 5 is connected with the rotating shaft 3 through the two connecting rods 7 which are arranged in parallel, along with the horizontal movement of the fixing strip 5, the connecting rods 7 rotate to drive the fixing strip 5 to approach towards the direction of the rotating shaft 3 until being collected into the fixing groove 6, at the moment, the sliding block 9 slides along the sliding groove 8, so that the two springs 11 are compressed and stretched respectively, the elastic forces of the two springs 11 are not offset, and the fixing strip 5 is subjected to outward thrust;

(D) adjusting the fixing strip: with the continuous movement of the sliding table 4, the fixing strips 5 and the rotating shaft 3 penetrate through the limiting holes 21 to enter the pipe fitting, when the fixing strips 5 are completely inserted into the pipe fitting, the two fixing strips 5 can be rapidly ejected out under the action of the two springs 11 to be separated from the fixing groove 6, so that the abrasive cloth on the outer wall of each fixing strip 5 is pressed in the pipe fitting;

(E) cleaning the pipe fittings: starter motor 22, motor 22 output shaft rotate and drive pivot 3 and rotate, and then drive the emery cloth of 5 outer walls of fixed strip and rotate the clearance to the pipe fitting inner wall, and after the clearance was accomplished, the counter rotation crank 25 makes slip table 4 slide to the direction of keeping away from support 2, and then makes fixed strip 5 leave inside the pipe fitting, expandes once more and resets to accomplish the clearance process of pipe fitting.

Technical Field

The invention relates to the technical field of nodular cast iron pipe fittings, in particular to a pipe fitting inner wall cleaning device for nodular cast iron and a using method thereof.

Background

The ductile iron is a high-strength cast iron material developed in the 20 th century and the fifties, the comprehensive performance of the ductile iron is close to that of steel, and the ductile iron is successfully applied to the process of casting parts with complex stress and higher requirements on strength, toughness and wear resistance based on the excellent performance of the ductile iron; now, nodular cast iron is rapidly developed into a widely-used cast iron material second to gray cast iron, namely, nodular cast iron which is produced by spheroidizing and inoculating spheroidal graphite and has improved mechanical properties, particularly, improved plasticity and toughness, so that strength higher than that of carbon steel is obtained.

However, after the pipe fitting is cast, the inner wall cleaning device is required to be used for cleaning the interior of the pipe fitting, the defects of burr protrusion and the like in the pipe fitting are overcome, the existing cleaning device can only be used for cleaning the pipe fitting with a single inner diameter generally, and the part of the cleaning device with the diameter-variable capability also needs to be operated in a complicated mode, so that the cleaning device is inconvenient to use.

Therefore, it is necessary to provide a cleaning device for the inner wall of a pipe for nodular cast iron and a method for using the same to solve the above problems.

Disclosure of Invention

The invention aims to provide a pipe fitting inner wall cleaning device for nodular cast iron and a using method thereof.

In order to achieve the above purpose, the invention provides the following technical scheme: a pipe fitting inner wall cleaning device for nodular cast iron comprises a base, wherein one side of the top of the base is connected with a support, a rotating shaft penetrates through one side of the support, the rotating shaft is rotatably connected with the support through a bearing, two cleaning mechanisms which are symmetrically distributed are arranged outside the rotating shaft, a sliding table is arranged on one side, away from the support, of the top of the base, the sliding table is slidably connected with the base, and two clamping mechanisms are arranged on the top of the sliding table;

the cleaning mechanism comprises a fixed strip, the fixed strip is arranged on the outer side of the rotating shaft, the fixed strip is arranged in parallel with the rotating shaft, a fixed groove corresponding to the fixed strip is formed in the outer wall of the rotating shaft, two connecting rods distributed in parallel are arranged between the fixed strip and the fixed groove, two ends of each connecting rod are respectively hinged with the fixed strip and the inner wall of the fixed groove, and two supporting assemblies which are vertically and symmetrically distributed to a central axis relative to the fixed strip are arranged between the two connecting rods;

the supporting component comprises a sliding groove, the sliding groove is formed in the bottom of the inner wall of the fixing groove, a sliding block is arranged inside the sliding groove and connected with the sliding groove in a sliding mode, a supporting rod is hinged to the top end of the sliding block, one end, far away from the sliding block, of the supporting rod extends to the inner side of the fixing strip and is hinged to the fixing strip, the supporting rod is inclined towards the center of the fixing strip, a spring is arranged on one side of the sliding block, and the two ends of the spring are respectively connected with the sliding block and the sliding groove in a fixing mode.

Preferably, fixture is including connecting the support column at the slip table top, the support column top is connected with fixed clamp cover, fixed clamp cover cross sectional shape sets up to the C shape, fixed clamp cover outside is provided with a plurality of ejector pins, the ejector pin run through fixed clamp cover and with fixed clamp cover sliding connection.

Preferably, the ejector rods are radially distributed about the central axis of the fixed jacket, the central axis of the fixed jacket coincides with the central axis of the rotating shaft, the movable jackets are arranged on two sides of the fixed jacket, a limiting rod penetrates between the two movable jackets and is connected with the movable jackets in a sliding manner, and the limiting rod penetrates through the fixed jacket and is fixedly connected with the fixed jacket.

Preferably, one end of the ejector rod close to the inner side of the fixed jacket is connected with a clamping block, the other end of the ejector rod is hinged with two movable rods which are symmetrically distributed, one ends of the two movable rods, far away from the ejector rod, extend to the outer sides of the two movable jackets respectively, and the movable rods are hinged with the movable jackets.

Preferably, a screw rod penetrates through the two movable clamping sleeves, the thread turning directions of the two ends of the screw rod are opposite, the two ends of the screw rod are respectively in threaded connection with the two movable clamping sleeves, and the screw rod penetrates through the fixed clamping sleeve and is in rotary connection with the fixed clamping sleeve.

Preferably, one side of the top of the sliding table, which is close to the rotating shaft, is connected with a baffle plate, a limiting hole is formed in the surface of the baffle plate, and the rotating shaft is matched with the limiting hole.

Preferably, one side of the support is connected with a motor, an output shaft of the motor is in transmission connection with the rotating shaft, and the outer wall of the fixing strip is connected with cleaning abrasive cloth.

Preferably, one side that the support was kept away from to the slip table is equipped with the fixing base, the fixing base is established at the base top, fixing base and base fixed connection, it is connected with the lead screw to rotate between fixing base and the support, the lead screw both ends rotate with fixing base and support respectively and are connected, the lead screw runs through the slip table and with slip table threaded connection.

Preferably, a crank is arranged on the front side of the support and is in transmission connection with the screw rod through a bevel gear.

A use method of a pipe fitting inner wall cleaning device for nodular cast iron comprises the following steps:

(A) positioning the pipe fitting: the pipe fitting to be cleaned is flatly placed on the two fixed jackets 13, the screw rods 19 are rotated, the thread turning directions of the two ends of each screw rod 19 are opposite, the movable jackets 15 on the two sides of each fixed jacket 13 can be driven to be far away from the fixed jackets 13, at the moment, the movable jackets 15 pull one ends of the movable rods 18 to be far away from the ejector rods 14, the other ends of the movable rods 18 pull the ejector rods 14 to move towards the inner sides of the fixed jackets 13, so that the clamp blocks 17 at one ends of the ejector rods 14 extrude and clamp the pipe fitting, and meanwhile, the ejector rods 14 are driven by the movable jackets 15 and the movable rods 18 to synchronously move, so that the center of the pipe fitting is superposed with the central axis of the fixed jackets 13;

(B) and adjusting the rotating shaft: a hand crank 25 drives the screw rod 24 through a bevel gear, so that the sliding table 4 slides along the screw rod 24 to a direction close to the bracket 2, and one end of the rotating shaft 3 close to the baffle is inserted into the limiting hole 21;

(C) and folding in the fixing strip: along with the insertion of the rotating shaft 3, one end of the fixing strip 5, which is close to the baffle, abuts against the surface of the baffle 20 and is supported by the two supporting rods 10, the sliding block 9 at the other end of each supporting rod 10 is under the elastic action of the springs 11, the elastic forces of the two springs 11 are offset, the fixing strip 5 is located at the outermost end, along with the continuous movement of the sliding table 4, the fixing strip 5 is pushed by the baffle 20 to move towards the direction of the motor 22, the fixing strip 5 is connected with the rotating shaft 3 through the two connecting rods 7 which are arranged in parallel, along with the horizontal movement of the fixing strip 5, the connecting rods 7 rotate to drive the fixing strip 5 to approach towards the direction of the rotating shaft 3 until being collected into the fixing groove 6, at the moment, the sliding block 9 slides along the sliding groove 8, so that the two springs 11 are compressed and stretched respectively, the elastic forces of the two springs 11 are not offset, and the fixing strip 5 is subjected to outward thrust;

(D) adjusting the fixing strip: with the continuous movement of the sliding table 4, the fixing strips 5 and the rotating shaft 3 penetrate through the limiting holes 21 to enter the pipe fitting, when the fixing strips 5 are completely inserted into the pipe fitting, the two fixing strips 5 can be rapidly ejected out under the action of the two springs 11 to be separated from the fixing groove 6, so that the abrasive cloth on the outer wall of each fixing strip 5 is pressed in the pipe fitting;

(E) cleaning the pipe fittings: starter motor 22, motor 22 output shaft rotate and drive pivot 3 and rotate, and then drive the emery cloth of 5 outer walls of fixed strip and rotate the clearance to the pipe fitting inner wall, and after the clearance was accomplished, the counter rotation crank 25 makes slip table 4 slide to the direction of keeping away from support 2, and then makes fixed strip 5 leave inside the pipe fitting, expandes once more and resets to accomplish the clearance process of pipe fitting.

In the technical scheme, the invention provides the following technical effects and advantages:

1. compared with the prior art, the fixing strip is pushed by the baffle plate, so that the fixing strip is accommodated in the fixing groove, passes through the limiting groove on the surface of the baffle plate, is propped open and abuts against the inner wall of the pipe fitting under the action of the spring, can be automatically adjusted according to the inner diameter size of the pipe fitting, and is convenient to use;

2. compared with the prior art, the ejector rods are radially distributed about the central axis of the fixing jacket, so that the center of a clamped pipe fitting can be superposed with the center of the fixing jacket, pipe fittings with different sizes can be positioned, the center of the pipe fitting can be positioned, and the up-and-down adjustment is not needed;

3. compared with the prior art, the fixing strip can be stored and released in the pipe fitting by arranging the limiting hole on the baffle, and one end of the rotating shaft can be supported through the limiting hole when the fixing strip is not used, so that the deformation of the rotating shaft due to the fact that one end of the rotating shaft cannot be supported for a long time is avoided.

Drawings

For a clearer explanation of the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the spindle according to the present invention;

FIG. 3 is a schematic view of the internal structure of the rotating shaft after the fixing strip is received;

FIG. 4 is an enlarged view of the portion A of FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the fitting structure of the fixed and movable jackets according to the present invention;

FIG. 6 is a schematic view of the matching structure of the lead screw and the crank of the present invention.

Description of reference numerals:

the device comprises a base 1, a support 2, a rotating shaft 3, a sliding table 4, a fixing strip 5, a fixing groove 6, a connecting rod 7, a sliding groove 8, a sliding block 9, a supporting rod 10, a spring 11, a supporting column 12, a fixing jacket 13, a top rod 14, a movable jacket 15, a limiting rod 16, a clamping block 17, a movable rod 18, a screw rod 19, a baffle 20, a limiting hole 21, a motor 22, a fixing seat 23, a screw rod 24 and a crank 25.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be further described in detail with reference to the accompanying drawings.

The invention provides a cleaning device for the inner wall of a pipe fitting for nodular cast iron, which comprises a base 1, wherein one side of the top of the base 1 is connected with a support 2, a rotating shaft 3 penetrates through one side of the support 2, the rotating shaft 3 is rotatably connected with the support 2 through a bearing, two cleaning mechanisms which are symmetrically distributed are arranged outside the rotating shaft 3, a sliding table 4 is arranged on one side of the top of the base 1, which is far away from the support 2, the sliding table 4 is in sliding connection with the base 1, and two clamping mechanisms are arranged on the top of the sliding table 4;

the cleaning mechanism comprises a fixed strip 5, the fixed strip 5 is arranged on the outer side of a rotating shaft 3, the fixed strip 5 is arranged in parallel with the rotating shaft 3, a fixed groove 6 corresponding to the fixed strip 5 is formed in the outer wall of the rotating shaft 3, two connecting rods 7 distributed in parallel are arranged between the fixed strip 5 and the fixed groove 6, two ends of each connecting rod 7 are respectively hinged with the inner walls of the fixed strip 5 and the fixed groove 6, and two supporting components which are vertically and symmetrically distributed to a central axis relative to the fixed strip 5 are arranged between the two connecting rods 7;

the supporting component comprises a sliding groove 8, the sliding groove 8 is formed in the bottom of the inner wall of the fixing groove 6, a sliding block 9 connected with the sliding groove 8 is arranged inside the sliding groove 8, a supporting rod 10 is hinged to the top end of the sliding block 9, one end, far away from the sliding block 9, of the supporting rod 10 extends to the inner side of the fixing strip 5 and is hinged to the fixing strip 5, the supporting rod 10 is inclined towards the center of the fixing strip 5, a spring 11 is arranged on one side of the sliding block 9, and two ends of the spring 11 are respectively connected with the sliding block 9 and the sliding groove 8 in a fixed mode.

Further, in above-mentioned technical scheme, fixture is including connecting the support column 12 at 4 tops of slip table, 12 top of support column are connected with fixed clamp cover 13, fixed clamp cover 13 cross sectional shape sets up to the C shape, fixed clamp cover 13 outside is provided with a plurality of ejector pins 14, ejector pin 14 run through fixed clamp cover 13 and with fixed clamp cover 13 sliding connection, conveniently follow fixed clamp cover 13 top installation pipe fitting, can be quick carry out the pipe fitting fixed.

Further, in the above technical solution, the plurality of the ejector rods 14 are radially distributed about the central axis of the fixed jacket 13, the central axis of the fixed jacket 13 coincides with the central axis of the rotating shaft 3, the movable jackets 15 are respectively disposed at both sides of the fixed jacket 13, a limiting rod 16 penetrates between the two movable jackets 15, the limiting rod 16 is slidably connected with the movable jackets 15, the limiting rod 16 penetrates through the fixed jacket 13 and is fixedly connected with the fixed jacket 13, and the movable jackets 15 are limited by the limiting rod 16, so that the movable jackets 15 are always parallel to the fixed jacket 13.

Further, in the above technical solution, one end of the ejector rod 14 close to the inner side of the fixed jacket 13 is connected with a clamping block 17, the other end of the ejector rod 14 is hinged with two symmetrically distributed movable rods 18, one end of each of the two movable rods 18 far away from the ejector rod 14 extends to the outer sides of the two movable jackets 15, the movable rods 18 are hinged with the movable jackets 15, and the movable jackets 14 can drive the plurality of movable rods 18 to drive the ejector rod 14 to move simultaneously by moving the two movable jackets 15 along the limiting rods 16.

Further, in the above technical solution, a screw rod 19 penetrates between the two movable jackets 15, the thread directions of the two ends of the screw rod 19 are opposite, the two ends of the screw rod 19 are respectively in threaded connection with the two movable jackets 15, the screw rod 19 penetrates through the fixed jacket 13 and is rotatably connected with the fixed jacket 13, and the two movable jackets 15 can move synchronously by rotating the screw rod 19.

Further, in above-mentioned technical scheme, one side that 4 tops of slip table are close to pivot 3 is connected with baffle 20, spacing hole 21 has been seted up on the baffle 20 surface, pivot 3 and spacing hole 21 phase-match can support pivot 3 through spacing hole 21, warp because of lacking the support when avoiding pivot 3 not using.

Further, in the above technical scheme, 2 one side of support is connected with motor 22, motor 22 output shaft is connected with 3 transmissions of pivot, 5 outer wall connections of fixed strip have the clearance emery cloth, and motor 22 output shaft drives pivot 3 and rotates, makes the clearance emery cloth of 5 outer walls of fixed strip clear up.

Further, in above-mentioned technical scheme, one side that support 2 was kept away from to slip table 4 is equipped with fixing base 23, fixing base 23 is established at base 1 top, fixing base 23 and base 1 fixed connection, it is connected with lead screw 24 to rotate between fixing base 23 and the support 2, lead screw 24 both ends rotate with fixing base 23 and support 2 respectively and are connected, lead screw 24 run through slip table 4 and with 4 threaded connection of slip table, rotate through lead screw 24 and drive slip table 4 and remove.

Further, in the above technical scheme, a crank 25 is arranged on the front side of the support 2, the crank 25 is in transmission connection with the screw rod 24 through a bevel gear, and the screw rod 24 in transmission connection with the crank 25 is conveniently driven to rotate by rotating the crank 25.

A use method of a pipe fitting inner wall cleaning device for nodular cast iron comprises the following steps:

(A) positioning the pipe fitting: the pipe fitting to be cleaned is horizontally placed on the two fixed jackets 13, the fixed jackets 13 are arranged into a C shape, the pipe fitting can be placed from a gap at the top of the fixed jackets 13, the pipe fitting clamping efficiency is improved, the movable jackets 15 at two sides of the fixed jackets 13 can be driven to be far away from the fixed jackets 13 by rotating the screw rods 19, at the moment, the movable jackets 15 pull one ends of the movable rods 18 to be far away from the ejector rods 14, the other ends of the movable rods 18 pull the ejector rods 14 to move towards the inner sides of the fixed jackets 13, so that the clamping blocks 17 at one ends of the ejector rods 14 extrude and clamp the pipe fitting, the ejector rods 14 are radially distributed about the central axis of the fixed jackets 13, and meanwhile, the ejector rods 14 synchronously move under the driving of the movable jackets 15 and the movable rods 18, and the center of the pipe fitting is coincided with the central axis of the fixed jackets 13;

(B) and adjusting the rotating shaft: a hand crank 25 drives the screw rod 24 through a bevel gear, so that the sliding table 4 slides along the screw rod 24 to a direction close to the bracket 2, and one end of the rotating shaft 3 close to the baffle is inserted into the limiting hole 21;

(C) and folding in the fixing strip: along with the insertion of the rotating shaft 3, one end of the fixing strip 5, which is close to the baffle, abuts against the surface of the baffle 20 and is supported by the two supporting rods 10, the sliding block 9 at the other end of each supporting rod 10 is under the elastic action of the springs 11, the elastic forces of the two springs 11 are offset, the fixing strip 5 is located at the outermost end, along with the continuous movement of the sliding table 4, the fixing strip 5 is pushed by the baffle 20 to move towards the direction of the motor 22, the fixing strip 5 is connected with the rotating shaft 3 through the two connecting rods 7 which are arranged in parallel, along with the horizontal movement of the fixing strip 5, the connecting rods 7 rotate to drive the fixing strip 5 to approach towards the direction of the rotating shaft 3 until being collected into the fixing groove 6, at the moment, the sliding block 9 slides along the sliding groove 8, so that the two springs 11 are compressed and stretched respectively, the elastic forces of the two springs 11 are not offset, and the fixing strip 5 is subjected to outward thrust;

(D) adjusting the fixing strip: with the continuous movement of the sliding table 4, the fixing strips 5 and the rotating shaft 3 penetrate through the limiting holes 21 to enter the pipe fitting, when the fixing strips 5 are completely inserted into the pipe fitting, the two fixing strips 5 can be rapidly ejected out under the action of the two springs 11 to be separated from the fixing groove 6, so that the abrasive cloth on the outer wall of each fixing strip 5 is pressed in the pipe fitting;

(E) cleaning the pipe fittings: starter motor 22, motor 22 output shaft rotates and drives pivot 3 and rotate, and then the emery cloth that drives 5 outer walls of fixed strip rotates the clearance to the pipe fitting inner wall, the back is accomplished in the clearance, the counter rotation crank 25, make slip table 4 to the direction of keeping away from support 2 slide, and then make fixed strip 5 leave inside the pipe fitting, expand once more and reset, thereby accomplish the cleaning process of pipe fitting, accomodate fixed strip 5 through spacing hole 21 inside fixed slot 6, then at the inside release of pipe fitting, can be according to pipe fitting internal diameter size automatically regulated, it is more convenient to use.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.