A synchronous centering beveling machine for on-site machining of large pipelines

Abstract

This utility model provides a synchronous centering and beveling machine for on-site processing of large pipelines, comprising: a fixed base ring; clamping components; a ring-shaped multi-link mechanism disposed on the fixed base ring, the ring-shaped multi-link mechanism including multiple swing rods and multiple connecting rods, each swing rod having a groove at its limiting end, and the slider of each clamping component slidingly engaging with one groove; each swing rod being hinged to the fixed base ring via a first hinge end, and each swing rod being hinged to two connecting rods via a second hinge end, with multiple swing rods sequentially connected along the circumference of the fixed base ring via multiple connecting rods; a rotating ring rotatably sleeved on the outer circumference of the fixed base ring; a cutting blade assembly; a beveling blade assembly; a drive motor; and an electric push rod, the output end of which is hinged to a swing rod having a third hinge end. This utility model enables rapid centering and clamping of large pipelines, improving installation efficiency and centering accuracy, and reducing operational difficulty.

Description

Technical Field

[0001] This utility model relates to a large-scale pipeline on-site processing equipment, specifically a synchronous centering beveling machine for large-scale pipeline on-site processing, belonging to the field of on-site construction equipment technology. Background Technology

[0002] In construction and renovation projects in the metallurgical industry, especially in the on-site processing of large pipelines such as sintering machines and annular cooler flues, it is often necessary to perform on-site welding beveling on large pipelines such as flues and ducts with diameters reaching thousands of millimeters that have already been laid on-site. Although there are external clamping beveling machines commonly used in on-site operations, their fixing method usually involves setting multiple circumferentially distributed independent clamping screws on the machine body. Operators need to use tools such as wrenches to repeatedly tighten each clamping screw in turn, completing a full circle of adjustment around the pipeline. This is time-consuming and labor-intensive. Moreover, since the tightening torque and sequence of each clamping screw rely entirely on the operator's experience and feel, it is difficult to ensure that the center axis of the beveling machine is perfectly aligned with the pipeline. Alignment errors will directly lead to problems such as the cut surface not being perpendicular to the pipeline axis and uneven beveling angles, thus affecting the subsequent welding quality. Utility Model Content

[0003] Based on the above background, the purpose of this utility model is to provide a synchronous centering beveling machine for on-site processing of large pipelines, which solves the problems of low installation efficiency, poor centering accuracy and complicated operation of existing beveling machines mentioned in the background art.

[0004] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0005] A synchronous centering beveling machine for on-site machining of large pipelines includes:

[0006] Fixed base ring;

[0007] At least three clamping members are evenly distributed around the circumference of the fixed base ring, each clamping member is slidably connected to the fixed base ring, and each clamping member has a slider fixedly connected to it in the middle.

[0008] A ring-shaped multi-link mechanism is provided on the fixed base ring. The ring-shaped multi-link mechanism includes multiple swing rods and multiple connecting rods. Each swing rod has a first hinge end, a second hinge end, and a sliding groove limiting end. One of the swing rods also has a third hinge end. Each swing rod has a sliding groove at the sliding groove limiting end. The slider of each clamping member is slidably engaged with one sliding groove. The swing rod is hinged to the fixed base ring through the first hinge end. Each swing rod is hinged to two connecting rods through the second hinge end. The multiple swing rods are sequentially connected along the circumference of the fixed base ring through the multiple connecting rods.

[0009] A rotating ring is rotatably fitted around the outer periphery of the fixed base ring and is coaxially arranged with the fixed base ring. The outer periphery of the rotating ring is provided with an annular toothed ring.

[0010] A cutting disc assembly fixed to the rotating ring;

[0011] A beveled cutter head assembly fixed to the rotating ring and disposed opposite to the cutting cutter head assembly;

[0012] A drive motor, wherein the fixed end of the drive motor is fixedly connected to the fixed base ring, and the output end of the drive motor is provided with a drive gear, which meshes with the ring gear.

[0013] An electric actuator, wherein the fixed end of the electric actuator is hinged to the fixed base ring, and the output end of the electric actuator is hinged to a swing arm having a third hinge end.

[0014] Preferably, the clamping member includes a clamping block and a radial guide rod. The fixed base ring is provided with radial guide holes evenly distributed along its circumference. The radial guide rod is slidably inserted into the radial guide holes. The end of the radial guide rod is fixedly connected to the clamping block. The slider is located in the middle of the radial guide rod.

[0015] Preferably, the clamping block has a buffer pad on its surface facing the central axis of the fixing base ring, and the surface of the buffer pad has a serrated anti-slip texture.

[0016] Preferably, the fixed base ring includes a first base ring, a ring cover, and a second base ring that are fixedly connected in sequence. The rotating ring is disposed on the first base ring, and the annular multi-link mechanism and the clamping member are disposed on the second base ring. The ring cover is provided with a clearance hole for the clamping member to pass through.

[0017] Preferably, the cutting disc assembly includes a first sliding base, a first threaded feed mechanism, and a cutting blade holder. The first sliding base is fixedly connected to the rotating ring, and the cutting blade holder is slidably mounted on the first sliding base. The first threaded feed mechanism is disposed between the first sliding base and the cutting blade holder, and the first threaded feed mechanism is used to change the radial position of the cutting blade holder relative to the central axis of the rotating ring by rotation.

[0018] Preferably, the beveling cutter head assembly includes a second sliding base, a second thread feed mechanism, and a beveling tool holder. The second sliding base is fixedly connected to the rotating ring, and the beveling tool holder is slidably mounted on the second sliding base. The second thread feed mechanism is disposed between the second sliding base and the beveling tool holder, and the second thread feed mechanism is used to change the radial position of the beveling tool holder relative to the central axis of the rotating ring by rotation.

[0019] Preferably, the output end of the electric actuator is provided with a drive link, the drive link is perpendicular to the output end of the electric actuator, one end of the drive link is hinged to the output end of the electric actuator, and the other end of the drive link is hinged to the third hinge end of the swing arm, the extension direction of the swing arm is parallel to the extension direction of the output end of the electric actuator.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] This utility model discloses a synchronous centering beveling machine for on-site processing of large pipelines. By setting up a ring multi-link synchronous clamping mechanism driven by an electric push rod, all clamping parts can be moved synchronously by the electric push rod, realizing rapid centering and clamping of large pipelines. This changes the traditional beveling machine operation method that relies on manual multi-point decentralized adjustment, greatly improving installation efficiency and centering accuracy, reducing operation difficulty and labor intensity, and is particularly suitable for on-site beveling operations of large pipelines. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the main structure of a synchronous centering beveling machine for on-site processing of large pipelines according to this utility model;

[0024] Figure 2 This is a side view of the synchronous centering beveling machine for on-site processing of large pipelines according to this utility model.

[0025] Figure 3 This is an exploded structural diagram of a synchronous centering beveling machine for on-site processing of large pipelines according to this utility model;

[0026] Figure 4 This is a schematic diagram of the main structure of the rotating ring, the cutting blade assembly, and the bevel blade assembly in this utility model;

[0027] Figure 5 This is a front view schematic diagram of the clamping component and the ring multi-link mechanism in this utility model;

[0028] In the diagram: 1. Fixed base ring; 101. First base ring; 102. Ring cover; 103. Second base ring; 104. Radial guide hole; 105. Clearance hole; 2. Clamping component; 201. Clamping block; 202. Radial guide rod; 203. Slider; 204. Buffer pad; 205. Anti-slip texture; 3. Annular multi-link mechanism; 301. Swing rod; 302. Connecting rod; 303. First hinge end; 304. Second hinge end; 305. Slide groove Limiting end; 306, Third hinge end; 307, Slide groove; 4, Rotating ring; 401, Annular gear ring; 5, Cutting blade assembly; 501, First sliding base; 502, First thread feed mechanism; 503, Cutting blade holder; 6, Bevel blade assembly; 601, Second sliding base; 602, Second thread feed mechanism; 603, Bevel blade holder; 7, Drive motor; 701, Drive gear; 8, Electric push rod; 801, Drive connecting rod. Detailed Implementation

[0029] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0030] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the field. Unless otherwise specified, the methods in the following embodiments are conventional methods in the field. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0031] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to facilitate explanation and provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.

[0032] like Figure 1-5 As shown, an embodiment of this utility model discloses a synchronous centering beveling machine for on-site processing of large pipelines, including a fixed base ring 1, six clamping members 2 evenly distributed circumferentially along the fixed base ring 1, an annular multi-link mechanism 3 disposed on the fixed base ring 1, a rotating ring 4, a cutting blade assembly 5 fixed on the rotating ring 4, a beveling blade assembly 6 fixed on the rotating ring 4 and disposed opposite to the cutting blade assembly 5, a drive motor 7, and an electric push rod 8.

[0033] The fixed base ring 1 includes a first base ring 101, a ring cover 102 and a second base ring 103 that are fixedly connected in sequence. A rotating ring 4 is disposed on the first base ring 101. A ring multi-link mechanism 3 and a clamping member 2 are disposed on the second base ring 103. The ring cover 102 is provided with a clearance hole 105 for the clamping member 2 to pass through.

[0034] Each clamping element 2 is slidably connected to the fixed base ring 1, and each clamping element 2 has a slider 203 fixedly connected to it in the middle. The clamping element 2 includes a clamping block 201 and a radial guide rod 202. The fixed base ring 1 has radial guide holes 104 evenly distributed along its circumference. The radial guide rod 202 slides through the radial guide holes 104, so that the clamping element 2 can only move radially. The end of the radial guide rod 202 is fixedly connected to the clamping block 201, and the slider 203 is located in the middle of the radial guide rod 202. In order to protect the pipe surface and enhance adhesion, the surface of the clamping block 201 facing the central axis of the fixed base ring 1 is provided with a buffer pad 204, and the surface of the buffer pad 204 is provided with serrated anti-slip texture 205.

[0035] The annular multi-link mechanism 3 includes six rocker arms 301 and six connecting rods 302. Each rocker arm 301 has a triangular plate structure, a first hinge end 303, a second hinge end 304, and a sliding groove limiting end 305. One of the rocker arms 301 also has a third hinge end 306. Each rocker arm 301 has a sliding groove 307 at its sliding groove limiting end 305. The slider 203 of each clamping member 2 slides in cooperation with one sliding groove 307. The rocker arms 301 are hinged to the fixed base ring 1 through the first hinge end 303, and each rocker arm 301 is hinged to two connecting rods 302 through the second hinge end 304. The six rocker arms 301 are sequentially connected along the circumference of the fixed base ring 1 via the six connecting rods 302.

[0036] The rotating ring 4 is rotatably sleeved on the outer periphery of the fixed base ring 1 and is coaxially arranged with the fixed base ring 1. The outer periphery of the rotating ring 4 is provided with an annular toothed ring 401.

[0037] The cutting disc assembly 5 includes a first sliding base 501, a first threaded feed mechanism 502, and a cutting blade holder 503. The first sliding base 501 is fixedly connected to the rotating ring 4, and the cutting blade holder 503 is slidably mounted on the first sliding base 501. The first threaded feed mechanism 502 is located between the first sliding base 501 and the cutting blade holder 503, and is used to change the radial position of the cutting blade holder 503 relative to the central axis of the rotating ring 4 by rotation.

[0038] The beveling cutter head assembly 6 includes a second sliding base 601, a second thread feed mechanism 602, and a beveling tool holder 603. The second sliding base 601 is fixedly connected to the rotating ring 4, and the beveling tool holder 603 is slidably mounted on the second sliding base 601. The second thread feed mechanism 602 is located between the second sliding base 601 and the beveling tool holder 603, and is used to change the radial position of the beveling tool holder 603 relative to the central axis of the rotating ring 4 by rotation.

[0039] The fixed end of the drive motor 7 is fixedly connected to the fixed base ring 1, and the output end of the drive motor 7 is provided with a drive gear 701, which meshes with the ring gear 401.

[0040] The fixed end of the electric actuator 8 is hinged to the fixed base ring 1, and the output end of the electric actuator 8 is hinged to the swing arm 301 having a third hinge end 306. The output end of the electric actuator 8 is provided with a drive link 801, which is perpendicular to the output end of the electric actuator 8. One end of the drive link 801 is hinged to the output end of the electric actuator 8, and the other end of the drive link 801 is hinged to the third hinge end 306 of the swing arm 301. The extension direction of the swing arm 301 is parallel to the extension direction of the output end of the electric actuator 8.

[0041] The working principle of this synchronous centering beveling machine is as follows:

[0042] The synchronous centering beveling machine is placed on the large pipe to be processed. At this time, the output end of the electric push rod 8 is in the retracted state, the annular multi-link mechanism 3 is in the relaxed state, and all the clamping blocks 201 are in the loosened position away from the pipe center.

[0043] The operator activates the electric actuator 8. The output end of the electric actuator 8 extends, driving the connected rocker arm 301 to rotate around its first hinge end 303 via the drive link 801. Since the rocker arm 301 is connected to all other rocker arms 301 via the link 302, its rotation is immediately transmitted through the entire annular multi-link mechanism 3, causing all rocker arms 301 to rotate synchronously at the same angle.

[0044] As all the swing rods 301 swing synchronously, the slide grooves 307 on their limiting ends 305 simultaneously push their respective matching sliders 203, thereby causing all the clamping parts 2 to move synchronously and equidistantly towards the center of the pipe. When the buffer pads 204 on the inner side of all the clamping blocks 201 simultaneously contact the outer wall of the pipe, since the radial displacement of all the clamping parts 2 is exactly the same, the central axis of the synchronous centering beveling machine automatically aligns with the central axis of the pipe, achieving high-precision automatic centering. The electric push rod 8 continues to provide thrust until all the clamping blocks 201 generate sufficient clamping force on the pipe, firmly locking the synchronous centering beveling machine onto the pipe.

[0045] After clamping, the operator starts the drive motor 7, which drives the rotating ring 4, along with the cutting blade assembly 5 and the beveling blade assembly 6, to move in a circular motion around the pipe. The first thread feed mechanism 502 and the second thread feed mechanism 602 are adjusted as needed to cut and bevele the pipe.

[0046] After processing is completed, the electric push rod 8 is reversed to retract its output end, the annular multi-link mechanism 3 returns to the relaxed state, and all clamping blocks 201 synchronously retract to the loosened position, so that the synchronous centering beveling machine can be easily removed from the pipeline.

[0047] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A synchronous centering beveling machine for on-site processing of large pipelines, characterized in that: This synchronous centering beveling machine includes: Fixed base ring (1); At least three clamping members (2) are evenly distributed around the fixed base ring (1), each clamping member (2) is slidably connected to the fixed base ring (1), and each clamping member (2) is provided with a slider (203) fixedly connected to it in the middle. A ring-shaped multi-link mechanism (3) is provided on the fixed base ring (1). The ring-shaped multi-link mechanism (3) includes multiple swing rods (301) and multiple connecting rods (302). Each swing rod (301) has a first hinge end (303), a second hinge end (304), and a sliding groove limiting end (305). One of the swing rods (301) also has a third hinge end (306). Each swing rod (301) is provided with a sliding groove at the sliding groove limiting end (305). The slider (203) of each clamping member (2) is slidably engaged with a groove (307), the rocker arm (301) is hinged to the fixed base ring (1) through the first hinge end (303), each rocker arm (301) is hinged to two connecting rods (302) through the second hinge end (304), and multiple rocker arms (301) are connected sequentially along the circumference of the fixed base ring (1) through multiple connecting rods (302); A rotating ring (4) is rotatably sleeved on the outer periphery of the fixed base ring (1) and is coaxially arranged with the fixed base ring (1). The outer periphery of the rotating ring (4) is provided with an annular toothed ring (401). Cutting blade assembly (5) fixed on the rotating ring (4); A bevel cutter head assembly (6) is fixed on the rotating ring (4) and disposed opposite to the cutting cutter head assembly (5); A drive motor (7) is provided, the fixed end of which is fixedly connected to the fixed base ring (1), and the output end of the drive motor (7) is provided with a drive gear (701), which meshes with the ring gear (401). An electric push rod (8) is provided, with its fixed end hinged to the fixed base ring (1) and its output end hinged to a swing rod (301) having a third hinge end (306).

2. The synchronous centering beveling machine for on-site processing of large pipelines according to claim 1, characterized in that: The clamping member (2) includes a clamping block (201) and a radial guide rod (202). The fixed base ring (1) is provided with radial guide holes (104) evenly distributed along its circumference. The radial guide rod (202) slides through the radial guide hole (104). The end of the radial guide rod (202) is fixedly connected to the clamping block (201). The slider (203) is located in the middle of the radial guide rod (202).

3. A synchronous centering beveling machine for on-site processing of large pipelines according to claim 2, characterized in that: The clamping block (201) has a buffer pad (204) on its surface facing the central axis of the fixed base ring (1), and the surface of the buffer pad (204) has a serrated anti-slip texture (205).

4. A synchronous centering beveling machine for on-site processing of large pipelines according to claim 1, characterized in that: The fixed base ring (1) includes a first base ring (101), a ring cover (102), and a second base ring (103) that are fixedly connected in sequence. The rotating ring (4) is located on the first base ring (101), and the annular multi-link mechanism (3) and the clamping member (2) are located on the second base ring (103). The ring cover (102) is provided with a clearance hole (105) for the clamping member (2) to pass through.

5. A synchronous centering beveling machine for on-site processing of large pipelines according to claim 1, characterized in that: The cutting disc assembly (5) includes a first sliding base (501), a first threaded feed mechanism (502), and a cutting blade holder (503). The first sliding base (501) is fixedly connected to the rotating ring (4). The cutting blade holder (503) is slidably mounted on the first sliding base (501). The first threaded feed mechanism (502) is located between the first sliding base (501) and the cutting blade holder (503). The first threaded feed mechanism (502) is used to change the radial position of the cutting blade holder (503) relative to the central axis of the rotating ring (4) by rotation.

6. A synchronous centering beveling machine for on-site processing of large pipelines according to claim 1, characterized in that: The beveling cutter head assembly (6) includes a second sliding base (601), a second thread feed mechanism (602), and a beveling tool holder (603). The second sliding base (601) is fixedly connected to the rotating ring (4). The beveling tool holder (603) is slidably mounted on the second sliding base (601). The second thread feed mechanism (602) is located between the second sliding base (601) and the beveling tool holder (603). The second thread feed mechanism (602) is used to change the radial position of the beveling tool holder (603) relative to the central axis of the rotating ring (4) by rotation.

7. A synchronous centering beveling machine for on-site processing of large pipelines according to claim 1, characterized in that: The output end of the electric push rod (8) is provided with a drive link (801). The drive link (801) is perpendicular to the output end of the electric push rod (8). One end of the drive link (801) is hinged to the output end of the electric push rod (8), and the other end of the drive link (801) is hinged to the third hinge end (306) of the swing rod (301). The extension direction of the swing rod (301) is parallel to the extension direction of the output end of the electric push rod (8).

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