Wear-resistant pipeline outer groove milling device

Abstract

The invention relates to the field of pipeline machining, in particular to a wear-resistant pipeline outer groove milling device which comprises a wear-resistant pipeline and a milling cutter arranged in the radial direction of the wear-resistant pipeline. The power mechanism is mounted on the wear-resistant pipeline, a cutter mounting assembly is arranged on the power mechanism, and the milling cutter is mounted on the cutter mounting assembly; the splash-proof box is arranged on the cutter mounting assembly, and the milling cutter is located in the splash-proof box; the sliding box is detachably arranged at the bottom of the splash-proof box, and the bottom of the sliding box is inserted into the wear-resistant pipeline; the sliding side plates are axially slidably arranged on two sides of the sliding box along the wear-resistant pipeline, the tops of the sliding side plates are in contact with the bottoms of the side plates, and the front ends of the sliding side plates are in contact with the end surface of the wear-resistant pipeline. By changing the position of the milling cutter, an outer groove can be milled in the end of the wear-resistant pipeline, groove milling can be completed while the wear-resistant pipeline is cut off, and the application range is wider. And flying chips can be effectively prevented, the workload of cleaning a site is reduced, and the milling safety is also improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pipeline machining, and in particular to a wear-resistant pipeline outer groove milling device. BACKGROUND

[0002] The wear-resistant pipeline is a pipeline specially designed for use in high-wear environments, which is usually made of high-hardness and high-wear-resistant materials such as special alloy steel, ceramic composite materials and the like to resist the wear caused by the material in the conveying process to the pipeline. In order to facilitate welding and improve the welding quality, an outer groove is usually machined at the end of the pipeline.

[0003] A kind of milling cutter device for pipeline outer groove processing is disclosed in Chinese patent CN114029533B, the upper front side position of bottom plate is fixedly provided with pipeline rotating support device, pipeline rotating support device is used to support and rotate pipeline;Milling cutter device is fixedly arranged at the rear side of pipeline rotating support device near front position, and milling cutter device is used for groove milling machining of the outer edge of pipeline end. The invention improves the smoothness of the outer groove milling surface of the pipeline, eliminates the further polishing process and improves the machining efficiency of the outer groove of the pipeline.

[0004] However, the above-mentioned disclosed scheme has the following disadvantages: the flying chips are serious during the pipeline groove milling process, and the flying debris of the pipeline affects the working environment, increases the subsequent cleaning workload, and also has the safety hazard of hurting people. And it cannot realize integrated cutting and milling groove machining. SUMMARY

[0005] The application aims to solve the problems of serious flying chips and inability to realize integrated cutting and milling groove machining in the background art, and provides a wear-resistant pipeline outer groove milling device.

[0006] The technical scheme of the application is as follows: a wear-resistant pipeline outer groove milling device, comprising a wear-resistant pipeline and a milling cutter arranged along the radial direction of the wear-resistant pipeline;Further comprising:

[0007] A power mechanism is installed on the wear-resistant pipeline, a tool mounting assembly is arranged on the power mechanism, the milling cutter is installed on the tool mounting assembly, the power mechanism drives the milling cutter to rotate axially, and simultaneously drives the milling cutter to move along the radial direction and the axial direction of the wear-resistant pipeline;

[0008] A splash-proof box is arranged on the tool mounting assembly, the milling cutter is located in the splash-proof box, and the two side plates of the splash-proof box are symmetrical about the axis of the wear-resistant pipeline and extend to the vicinity of the outer wall of the wear-resistant pipeline at the bottom.

[0009] A sliding box is detachably arranged at the bottom of the splash-proof box, and the bottom of the sliding box is inserted into the wear-resistant pipeline.

[0010] And sliding side plates are arranged on both sides of the sliding box along the axial direction of the wear-resistant pipeline, the top of the sliding side plate and the bottom of the side plate are in contact, and the front end of the sliding side plate is in contact with the end face of the wear-resistant pipeline.

[0011] Preferably, the strip chip winding mechanism is used for winding the long strip-shaped metal chips generated by milling, and the strip chip winding mechanism comprises a supporting rod arranged on the sliding box in the axial direction of the wear-resistant pipeline and rotating, a roller arranged on the front end of the supporting rod and in rolling contact with the inner wall of the wear-resistant pipeline, a strip chip winding rod arranged on the sliding box in the axial direction of the wear-resistant pipeline and rotating, and gears arranged on the strip chip winding rod and the supporting rod and meshing with each other; the strip chip winding rod is located on the front side of the rotating direction of the milling cutter.

[0012] Preferably, a screw is arranged on the sliding box along the axial direction of the wear-resistant pipeline, a vertical plate is arranged at the rear end of the sliding side plate, a through hole is arranged on the vertical plate for the screw to pass through, and two limiting discs are arranged on the screw and respectively attached to the two sides of the vertical plate.

[0013] Preferably, the power mechanism comprises a supporting ring sleeved on the outer wall of the wear-resistant pipeline, a ring gear rotatingly connected with the supporting ring, a motor arranged on the supporting ring, a driving gear arranged on the output shaft of the motor and meshing with the ring gear, and a mounting ring arranged on the ring gear; the cutter mounting assembly is arranged on the mounting ring.

[0014] Preferably, the cutter mounting assembly comprises a box body connected with the mounting ring, a lifting block slidingly arranged in the box body in the vertical direction, and a clamp arranged on the lifting block and clamping the milling cutter; an inclined surface is arranged on the top of the lifting block.

[0015] Preferably, a through hole is arranged on the splash-proof box for the box body to pass through, and the splash-proof box is slidingly connected with the box body in the vertical direction; a mounting plate is arranged on the splash-proof box, vertical screw holes are arranged on the mounting plate and the box body, and the mounting plate is connected with the box body through locking bolts.

[0016] Preferably, the splash-proof box further comprises a sliding plate slidingly connected with the inclined surface, a cross rod connected with the sliding plate, an end plate arranged on the front end of the cross rod, a plurality of rolling balls rotatingly arranged on the end plate, a moving ring slidingly arranged on the outer wall of the supporting ring in the axial direction, and an axial telescopic device arranged on the supporting ring and pushing the moving ring to move; the rolling balls are in rolling contact with the moving ring, and the axial telescopic device is a pneumatic cylinder, a hydraulic cylinder or an electric push rod.

[0017] Preferably, a vertical annular upward turning edge is arranged on the outer peripheral wall of the supporting ring, a through hole is arranged on the upward turning edge for the telescopic rod of the axial telescopic device to pass through, and a plurality of guide rods are arranged on the moving ring along the axial direction of the wear-resistant pipeline; a plurality of guide holes are arranged on the upward turning edge for the guide rods to pass through.

[0018] Compared with the prior art, the present application has the following beneficial technical effects:

[0019] 1. By changing the position of the milling cutter, both the end of the wear-resistant pipe can be milled with an outer bevel, and the bevel milling can be completed while cutting off the wear-resistant pipe, and the application range is wider.

[0020] 2. Whether it is directly milling the outer bevel of the end or cutting and bevel milling, the milling cutter is always located in the space surrounded by the splash-proof box, the sliding box, the sliding side plate and the wear-resistant pipe, which can effectively prevent flying chips, reduce the workload of cleaning the site, and also improve the safety of milling. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of an embodiment of the application;

[0022] Figure 2 is Figure 1 is a structural schematic diagram from another perspective;

[0023] Figure 3 is Figure 1 is a partially cutaway schematic diagram;

[0024] Figure 4 is a schematic diagram of the internal structure of the splash-proof box;

[0025] Figure 5 is a schematic diagram of the mounting structure of the milling cutter.

[0026] Reference signs: 1, wear-resistant pipe; 2, milling cutter; 3, support ring; 4, centering installation groove; 5, centering top rod; 6, radial telescopic device; 7, motor; 8, annular groove; 9, driving gear; 10, annular gear ring; 11, mounting ring; 12, box body; 13, lifting block; 14, inclined surface; 15, sliding plate; 16, clamp; 17, cross rod; 18, limiting ring; 19, spring; 20, end plate; 21, ball; 22, moving ring; 23, axial telescopic device; 24, guide rod; 25, splash-proof box; 26, side plate; 27, sliding side plate; 28, sliding box; 29, connecting plate; 30, support rod; 31, roller; 32, chip winding rod; 33, gear; 34, screw; 35, knob; 36, mounting plate; 37, locking bolt. DETAILED DESCRIPTION

[0027] Example one, as shown in the drawings, the application proposes a wear-resistant pipe outer bevel milling device, which comprises a wear-resistant pipe 1 and a milling cutter 2 arranged radially along the wear-resistant pipe 1; further comprising: Figures 1-4

[0028] ​The power mechanism is installed on the wear-resistant pipeline 1, a tool mounting assembly is arranged on the power mechanism, a milling cutter 2 is installed on the tool mounting assembly, the power mechanism drives the milling cutter 2 to rotate in the axial direction, and the milling cutter 2 can also be driven to move in the radial direction and the axial direction of the wear-resistant pipeline 1; when the end of the wear-resistant pipeline 1 is milled, the milling cutter 2 is slowly moved in the axial direction while rotating; when cutting and outer bevel machining are required, the milling cutter 2 is moved in the radial direction of the wear-resistant pipeline 1 while rotating;

[0029] The splash-proof box 25 is arranged on the tool mounting assembly, the milling cutter 2 is located in the splash-proof box 25, the two side plates 26 of the splash-proof box 25 are symmetrical about the axis of the wear-resistant pipeline 1, and the bottom of the splash-proof box 25 extends to the vicinity of the outer wall of the wear-resistant pipeline 1; specifically, the distance between the bottom of the side plate 26 and the outer wall of the wear-resistant pipeline 1 is 1-3 mm, and the two do not contact, so that the rotating resistance is not increased, and the small gap can also block the flying chips well.

[0030] The sliding box 28 is detachably arranged at the bottom of the splash-proof box 25, and the bottom of the sliding box 28 is inserted into the wear-resistant pipeline 1.

[0031] The sliding side plate 27 is arranged at the two sides of the sliding box 28 in the axial direction of the wear-resistant pipeline 1, the top of the sliding side plate 27 is in contact with the bottom of the side plate 26, and the front end of the sliding side plate 27 is in contact with the end face of the wear-resistant pipeline 1; the splash-proof box 25, the side plate 26, the sliding box 28, the sliding side plate 27 and the wear-resistant pipeline 1 form a relatively closed space, the milling cutter 2 is located in the space, the flying chips generated in the outer bevel milling are fallen into the space for temporary collection, and the flying chips can be conveniently cleaned by removing the sliding box 28 when the flying chips need to be discharged.

[0032] The strip chip winding mechanism is used for winding the long strip-shaped metal chips generated in the milling; the strip chip winding mechanism comprises a supporting rod 30 arranged in the axial direction of the wear-resistant pipeline 1 and rotating on the sliding box 28, a roller 31 arranged at the front end of the supporting rod 30 and rolling in contact with the inner wall of the wear-resistant pipeline 1, a strip chip winding rod 32 arranged in the axial direction of the wear-resistant pipeline 1 and rotating on the sliding box 28, and a gear 33 arranged on the strip chip winding rod 32 and the supporting rod 30 and meshing with each other; the strip chip winding rod 32 is located on the front side of the rotating direction of the milling cutter 2, and the strip chip winding rod 32 is located outside the wear-resistant pipeline 1; in order to improve the winding effect, a spiral plate is arranged on the strip chip winding rod 32, and a connecting plate 29 is arranged on the top of the splash-proof box 25 and the top of the sliding box 28; the two connecting plates 29 are connected through bolts, and the sliding box 28 can be taken out backward after the bolts are directly removed when the sliding box 28 is removed.

[0033] In the second embodiment, the sliding structure of the sliding side plate 27 is introduced in detail.

[0034] As Figure 4As shown, the screw 34 is arranged on the sliding box 28 along the axis direction of the wear-resistant pipeline 1, a vertical plate is arranged at the rear end of the sliding side plate 27, the vertical plate is provided with a through hole for the screw 34 to pass through, two limiting discs are arranged on the screw 34, the two limiting discs are respectively attached to the two sides of the vertical plate, and the front and rear positions of the sliding side plate 27 can be adjusted by rotating the screw 34 to move forward and backward. When the end of the wear-resistant pipeline 1 is milled, the sliding side plate 27 is relatively rearward, when cutting and milling the bevel is needed, the position of the sliding side plate 27 is relatively forward, and in order to facilitate the rotation of the screw 34, a knob 35 is arranged at the rear end of the screw 34.

[0035] In example three, the application provides a wear-resistant pipeline outer bevel milling device, compared with example two, the structure of the power mechanism is introduced in detail.

[0036] As shown in the figure, Figures 1-3 The power mechanism includes a support ring 3 sleeved on the outer wall of the wear-resistant pipeline 1, an annular gear ring 10 rotationally connected with the support ring 3, a motor 7 arranged on the support ring 3, a driving gear 9 arranged on the output shaft of the motor 7 and engaged with the annular gear ring 10, and a mounting ring 11 arranged on the annular gear ring 10. Specifically, an annular groove 8 is arranged on the end face of the support ring 3 facing the milling cutter 2, the driving gear 9 and the annular gear ring 10 are both located in the annular groove 8, the teeth of the annular gear ring 10 are on the inner circumferential surface thereof, the outer circumferential wall of the annular gear ring 10 is rotationally connected with the groove wall of the annular groove 8, a centering mounting groove 4 is arranged on the end face of the support ring 3 away from the milling cutter 2, the motor 7 is arranged in the centering mounting groove 4, a plurality of centering jacks 5 are arranged in the centering mounting groove 4 and slide along the radial direction, the centering jacks 5 pass through the centering mounting groove 4 and abut against the wear-resistant pipeline 1, a plurality of radial extension devices 6 for driving the radial movement of the centering jacks 5 are arranged in the centering mounting groove 4, the radial extension devices 6 are gas cylinders, hydraulic cylinders or electric push rods, in this embodiment, four radial extension devices 6 and four centering jacks 5 are arranged, and the four centering jacks 5 are uniformly distributed along the circumferential direction with the axis of the wear-resistant pipeline 1 as the center; the tool mounting assembly is arranged on the mounting ring 11.

[0037] As shown in the figure, Figures 3-5 The tool mounting assembly includes a box body 12 connected with the mounting ring 11, a lifting block 13 slidingly arranged in the box body 12 along the vertical direction, and a clamp 16 arranged on the lifting block 13, the milling cutter 2 is clamped by the clamp 16, and an inclined surface 14 is arranged on the top of the lifting block 13; specifically, the top of the box body 12 and the end facing the milling cutter 2 are both open, a sliding groove is vertically arranged on the inner wall of the box body 12, and a sliding block matched with the sliding groove is arranged on the lifting block 13.

[0038] As shown in the figure, Figure 3As shown, the splash-proof box 25 is provided with a through hole for the box body 12 to pass through, and the splash-proof box 25 is slidably connected to the box body 12 in the vertical direction. The splash-proof box 25 is provided with a mounting plate 36, and the mounting plate 36 and the box body 12 are provided with vertically opposite threaded holes. The mounting plate 36 is connected to the box body 12 by locking bolts 37.

[0039] like Figure 3 and Figure 5 As shown, it also includes a slide plate 15 slidably connected to the inclined plane 14, a crossbar 17 connected to the slide plate 15, an end plate 20 set at the front end of the crossbar 17, a plurality of balls 21 rotatably set on the end plate 20, a movable ring 22 slidably set on the outer wall of the support ring 3 along the axial direction, and an axial telescopic device 23 set on the support ring 3 to push the movable ring 22 to move. The balls 21 and the movable ring 22 are in rolling contact. The axial telescopic device 23 is a cylinder, a hydraulic cylinder or an electric push rod. Specifically, the slide plate 15 slides along the inclined plane 14, and the height of the slide plate 15 remains unchanged, thereby pushing the lifting block 13 to move up or down. A limit ring 18 is set on the crossbar 17, and a spring 19 is sleeved on the crossbar 17. The two ends of the spring 19 are respectively connected to the limit ring 18 and the box body 12.

[0040] like Figure 3 As shown, further, a vertical annular upturned edge is provided on the outer peripheral wall of the support ring 3, and a through hole is provided on the upturned edge for the telescopic rod of the axial telescopic device 23 to pass through. Multiple guide rods 24 are provided on the moving ring 22 along the axial direction of the wear-resistant pipe 1, and multiple guide holes are provided on the upturned edge for the guide rods 24 to pass through.

[0041] In summary, when using this invention, if it is necessary to mill the outer bevel at the end of the wear-resistant pipe 1, the support ring 3 is placed on the wear-resistant pipe 1, and multiple radial telescopic devices 6 are started simultaneously. By adjusting multiple centering rods 5, the support ring 3 is made coaxial with the wear-resistant pipe 1. It should be noted that the support ring 3 is not completely fixed so that the milling cutter 2 is located in front of the wear-resistant pipe 1. The height of the milling cutter 2 is adjusted by the axial telescopic device 23 so that the cut of the milling cutter 2 includes the pipe wall of the wear-resistant pipe 1 in height. Then, the motor 7 is started, and the milling cutter 2 begins to rotate through the cooperation of the drive gear 9 and the ring gear 10. The support ring 3 is manually positioned to prevent it from rotating, and the support ring 3 is slowly pulled backward, which drives the milling cutter 2 to move backward and gradually complete the milling of the outer bevel. When it is necessary to cut off the end of the wear-resistant pipe 1 and simultaneously complete the beveling, the support ring 3 is placed on the wear-resistant pipe 1, and multiple radial telescopic devices 6 are activated simultaneously. Multiple centering rods 5 fix the support ring 3 to the wear-resistant pipe 1. It is important to note that at this time, the support ring 3 is completely fixed, placing the milling cutter 2 on the outer side of the outer wall of the wear-resistant pipe 1. The motor 7 is started, and through the cooperation of the drive gear 9 and the ring gear 10, the milling cutter 2 begins to rotate. The height of the milling cutter 2 is slowly adjusted by the axial telescopic device 23, allowing the milling cutter 2 to gradually move along the radial direction of the wear-resistant pipe 1, completing the cutting off of the wear-resistant pipe 1 while simultaneously performing beveling. Whether directly milling the outer beveling of the end or cutting and beveling, the milling cutter 2 is always located within the space enclosed by the splash guard 25, the sliding box 28, the sliding side plate 27, and the wear-resistant pipe 1, effectively preventing flying debris, reducing the workload of cleaning the site, and improving the safety of milling.

[0042] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A milling device for the outer bevel of a wear-resistant pipe, comprising a wear-resistant pipe (1) and a milling cutter (2) arranged radially along the wear-resistant pipe (1); characterized in that, Also includes: The power mechanism is installed on the wear-resistant pipe (1). A tool mounting assembly is set on the power mechanism. The milling cutter (2) is mounted on the tool mounting assembly. The power mechanism drives the milling cutter (2) to rotate axially and can also drive the milling cutter (2) to move radially and axially along the wear-resistant pipe (1). A splash guard (25) is set on the tool mounting assembly. The milling cutter (2) is located inside the splash guard (25). The two side plates (26) of the splash guard (25) are symmetrical about the axis of the wear-resistant pipe (1) and their bottoms extend to the vicinity of the outer wall of the wear-resistant pipe (1). The sliding box (28) is detachably installed at the bottom of the splash guard (25), and the bottom of the sliding box (28) is inserted into the wear-resistant pipe (1); And a sliding side plate (27) is slidably disposed on both sides of the sliding box (28) along the axial direction of the wear-resistant pipe (1). The top of the sliding side plate (27) and the bottom of the side plate (26) are in contact, and the front end of the sliding side plate (27) is in contact with the end face of the wear-resistant pipe (1).

2. The wear-resistant pipe external beveling milling device according to claim 1, characterized in that, It also includes a chip winding mechanism for winding long strips of metal chips generated during milling; the chip winding mechanism includes a support rod (30) rotatably mounted on a sliding box (28) along the axial direction of the wear-resistant pipe (1), a roller (31) mounted on the front end of the support rod (30) and rollingly contacting the inner wall of the wear-resistant pipe (1), a chip winding rod (32) rotatably mounted on the sliding box (28) along the axial direction of the wear-resistant pipe (1), and gears (33) meshing with each other on the chip winding rod (32) and the support rod (30); the chip winding rod (32) is located in front of the milling cutter (2) in the direction of rotation.

3. The wear-resistant pipe external beveling milling device according to claim 1, characterized in that, A screw (34) is provided on the sliding box (28) along the axis of the wear-resistant pipe (1). A vertical plate is provided at the rear end of the sliding side plate (27). A through hole is provided on the vertical plate for the screw (34) to pass through. Two limiting plates are provided on the screw (34). The two limiting plates are respectively attached to the two sides of the vertical plate.

4. The wear-resistant pipe external beveling milling device according to claim 1, characterized in that, The power mechanism includes a support ring (3) fitted on the outer wall of the wear-resistant pipe (1), an annular gear ring (10) rotatably connected to the support ring (3), a motor (7) mounted on the support ring (3), a drive gear (9) mounted on the output shaft of the motor (7) and meshing with the annular gear ring (10), and a mounting ring (11) mounted on the annular gear ring (10); the tool mounting assembly is mounted on the mounting ring (11).

5. The wear-resistant pipe external beveling milling device according to claim 4, characterized in that, The tool mounting assembly includes a housing (12) connected to the mounting ring (11), a lifting block (13) slidably disposed in the housing (12) in the vertical direction, and a clamp (16) disposed on the lifting block (13). The milling cutter (2) is clamped by the clamp (16), and the top of the lifting block (13) is provided with a slope (14).

6. The wear-resistant pipe external beveling milling device according to claim 5, characterized in that, The splash-proof box (25) is provided with a through hole for the box body (12) to pass through, and the splash-proof box (25) is slidably connected to the box body (12) in the vertical direction. The splash-proof box (25) is provided with a mounting plate (36), and the mounting plate (36) and the box body (12) are provided with vertically opposite threaded holes. The mounting plate (36) is connected to the box body (12) by a locking bolt (37).

7. The wear-resistant pipe external beveling milling device according to claim 5, characterized in that, It also includes a sliding plate (15) slidably connected to the inclined plane (14), a crossbar (17) connected to the sliding plate (15), an end plate (20) set at the front end of the crossbar (17), a plurality of balls (21) rotatably set on the end plate (20), a movable ring (22) slidably set on the outer wall of the support ring (3) along the axis, and an axial telescopic device (23) set on the support ring (3) to push the movable ring (22) to move. The balls (21) and the movable ring (22) are in rolling contact. The axial telescopic device (23) is a cylinder, a hydraulic cylinder or an electric push rod.

8. The wear-resistant pipe external beveling milling device according to claim 7, characterized in that, A vertical annular upturned edge is provided on the outer peripheral wall of the support ring (3). A through hole is provided on the upturned edge for the telescopic rod of the axial telescopic device (23) to pass through. Multiple guide rods (24) are provided on the moving ring (22) along the axial direction of the wear-resistant pipe (1). Multiple guide holes are provided on the upturned edge for the guide rods (24) to pass through.

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