CN113695986B

CN113695986B - Auxiliary device of arc-shaped pipeline

Info

Publication number: CN113695986B
Application number: CN202111028380.6A
Authority: CN
Inventors: 王明波; 刘奎荣; 朱建平; 付滨; 王庆; 贺小康; 王杰; 侯浩; 徐洪敏; 胡博; 周晓亮; 李洪涛; 吴宗放; 李旺
Original assignee: National Pipeline Network Southwest Pipeline Co Ltd
Current assignee: National Pipeline Network Southwest Pipeline Co Ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2023-06-09
Anticipated expiration: 2041-09-02
Also published as: CN113695986A

Abstract

The invention provides an auxiliary device of an arc-shaped pipeline, which comprises: the first swinging assembly comprises a first swinging frame and a first pipe bracket arranged on the first swinging frame, and a first clamping opening for the arc-shaped pipeline to pass through is formed on the first pipe bracket; and the second swinging assembly comprises a second swinging frame and a second pipe bracket arranged on the second swinging frame, a second clamping opening for the arc-shaped pipeline to pass through is formed on the second pipe bracket, and the second swinging frame is pivoted with the first swinging frame so as to adjust the opening and closing angle between the second swinging frame and the first swinging frame. According to the invention, the measurement and/or line drawing of different angles of the arc-shaped pipeline can be satisfied.

Description

Auxiliary device of arc-shaped pipeline

Technical Field

The invention relates to the technical field of auxiliary processing tools of pipelines, in particular to an auxiliary device for an arc-shaped pipeline.

Background

At present, the pipeline is applied to industries such as petroleum, chemical industry, electric power, ships, metallurgy, machinery, construction, pharmacy and the like, and the requirements on the pipeline are also more and more strict, especially an arc pipeline. In the process of blanking the arc-shaped pipeline, the angle required by the arc-shaped pipeline is required to be drawn, and then the arc-shaped pipeline is cut along the drawn line. There are two general line drawing procedures. The first is to manually measure the required angle by using an angle gauge, draw a plurality of positioning points, further enclose the outer wall of the pipeline by using a ring belt, then draw lines along the ring belt by using a special stone pen, and finally cut along the drawn lines. When the pipe diameter is great, must two people operate simultaneously and just can accomplish the setting-out work, extravagant manpower, lack effectual instrument moreover and lead to the line of drawing out often can't guarantee the parallel and level, influences the precision of follow-up cutting. The second is to use a template for lofting. That is, the cardboard is cut into a desired shape with a harder piece of paper and then the cardboard is wrapped around the tube to trace the cut.

At present, the line drawing procedure is difficult to ensure the accuracy of angles, and has great manual errors. And the arc-shaped pipeline is not fixed in the line drawing process, so that the arc-shaped pipeline can deflect axially and radially in the line drawing process, and the error is further increased.

Disclosure of Invention

The present invention aims to address at least one of the above-mentioned deficiencies of the prior art. For example, it is an object of the present invention to provide an auxiliary device for measuring and/or marking different angles of an arcuate pipe.

In order to achieve the above object, the present invention provides an auxiliary device for an arc-shaped pipe, the auxiliary device comprising: the first swinging assembly comprises a first swinging frame and a first pipe bracket arranged on the first swinging frame, and a first clamping opening for the arc-shaped pipeline to pass through is formed on the first pipe bracket; and the second swinging assembly comprises a second swinging frame and a second pipe bracket arranged on the second swinging frame, a second clamping opening for the arc-shaped pipeline to pass through is formed on the second pipe bracket, and the second swinging frame is pivoted with the first swinging frame so as to adjust the opening and closing angle between the second swinging frame and the first swinging frame and meet the measurement and/or line drawing of different angles of the arc-shaped pipeline.

In one exemplary embodiment, the auxiliary device may further include an angle adjustment guide unit, and the angle adjustment guide unit may include: a rotation shaft provided on one of the second pipe bracket and the first swing frame; a guide shaft provided on the other of the second pipe bracket and the first swing frame; and one end of the limiting frame is rotatably connected with the rotating shaft, a guide groove is formed in the limiting frame, and the guide shaft is inserted into the guide groove and is slidably arranged in the guide groove.

In one exemplary embodiment, the limit frame may include: the first end of the first guide rod is rotatably connected with the rotating shaft; and the first end of the second guide rod is connected with the second end of the first guide rod, an included angle is formed between the second guide rod and the first guide rod, the guide groove is formed on the second guide rod along the length direction, and the guide shaft relatively slides along the length direction in the guide groove when the opening and closing angle between the second swing frame and the first swing frame is regulated by the included angle.

In one exemplary embodiment, the included angle may be 60 to 120 °.

In one exemplary embodiment, the angle adjustment guide unit may further include a locking member for locking relative sliding between the guide shaft and the guide groove, the locking member being a nut sleeved on the guide shaft.

In an exemplary embodiment, the auxiliary device may further include: the first radial moving unit is used for driving the first pipe bracket to move back and forth relative to the first swinging frame along the bending radius direction of the arc-shaped pipeline; and/or a second radial moving unit for driving the second pipe bracket to move back and forth along the bending radius direction of the arc-shaped pipeline relative to the second swinging frame.

In one exemplary embodiment, the first radial moving unit may include: the first lead screw is arranged along the bending radius direction, the first end of the first lead screw is fixedly connected to the first pipe bracket, and the second end of the first lead screw is in threaded connection with the first swing frame.

In one exemplary embodiment, the second radial moving unit may include: and the second lead screw is arranged along the bending radius direction, the first end of the second lead screw is fixedly connected to the second pipe bracket, and the second end of the second lead screw is in threaded connection with the second swing frame.

In an exemplary embodiment, the first swing frame may be provided with a first mounting groove, the first adjusting hand wheel may be disposed in the first mounting groove, the first adjusting hand wheel may be sleeved on the first screw rod, and a threaded hole in threaded connection with the first screw rod may be formed on the first adjusting hand wheel.

In an exemplary embodiment, a second mounting groove may be formed on the second swing frame, a second adjusting hand wheel may be disposed in the second mounting groove, the second adjusting hand wheel may be sleeved on the second screw rod, and a threaded hole in threaded connection with the second screw rod is formed on the second adjusting hand wheel.

In one exemplary embodiment, the first pipe bracket may be disposed on the first swing frame through a first stopper assembly, and the first stopper assembly may include a first rail and a first rail groove extending in a bending radius direction of the arc-shaped pipe, the first rail may be formed on one of the first pipe bracket and the first swing frame, and the first rail groove may be formed on the other of the first pipe bracket and the first swing frame and movable with respect to the first rail.

In one exemplary embodiment, the second pipe bracket may be disposed on the second swing frame through a second stopper assembly, and the second stopper assembly may include a second rail and a second rail groove extending in a bending radius direction of the arc-shaped pipe and cooperating with each other, the second rail may be formed on one of the second pipe bracket and the second swing frame, and the second rail groove may be formed on the other of the second pipe bracket and the second swing frame and movable with respect to the second rail.

In one exemplary embodiment, the first swing frame may have a first mounting hole formed thereon, the first pipe bracket may be disposed in the first mounting hole, the first rail groove may be formed on top and bottom surfaces of the first pipe bracket, the first rail groove may have a groove structure, and the first rail may be formed as a protrusion structure that is received in the groove structure and is relatively slidable.

In one exemplary embodiment, the second swing frame may have a second mounting hole formed thereon, the second pipe bracket may be disposed in the second mounting hole, the second rail groove may be formed on top and bottom surfaces of the second pipe bracket, the second rail groove may have a groove structure, and the second rail may be formed as a protrusion structure that may be received in the groove structure and may be relatively slid.

In one exemplary embodiment, the first tube carrier may have a first card and a second card formed on both the top and bottom surfaces thereof, the first card and the second card being spaced apart to form the first rail groove, wherein one of the first card and the second card is detachably connected to the first tube carrier.

In one exemplary embodiment, the second tube bracket may have third and fourth clamping plates formed on both top and bottom surfaces thereof, the third and fourth clamping plates being spaced apart to form the second rail groove, wherein one of the third and fourth clamping plates is detachably connected with the second tube bracket.

In one exemplary embodiment, the first and second clamping ports may be formed in a ring shape corresponding to the arc-shaped pipe.

In an exemplary embodiment, the auxiliary device may further include a fastening unit including a fastening member, through holes through which the fastening member passes are provided in the first pipe bracket and the second pipe bracket, and the fastening member abuts against an outer wall of the arc-shaped pipe after passing through the through holes.

In an exemplary embodiment, the second swing frame and the first swing frame may be pivotally connected by a hinge.

In one exemplary embodiment, the hinge may have graduations formed thereon for reading the angle of the arcuate tube.

In one exemplary embodiment, the limit stop may be formed with graduations for reading the angle of the arc-shaped pipe.

In an exemplary embodiment, the first swing frame and/or the second swing frame has graduations formed thereon.

In one exemplary embodiment, the auxiliary device may further include a cutting tool and a scribing tool.

Compared with the prior art, the invention has the beneficial effects that: the accuracy of the angle measurement and the line drawing accuracy of the arc-shaped pipeline can be improved.

Drawings

FIG. 1 is a schematic view showing an operation state of an auxiliary device of an arc-shaped pipe according to an exemplary embodiment of the present invention;

FIG. 2 is a schematic view showing an auxiliary device closing state of an arc-shaped pipe according to an exemplary embodiment of the present invention;

FIG. 3 is a schematic view showing the structure of the first swing frame of FIG. 1;

FIG. 4 shows a schematic structural view of the first tube bracket of FIG. 1;

fig. 5 shows a schematic structural view of the stopper in fig. 1.

Reference numerals illustrate:

1-arc-shaped pipeline, 100-first swing assembly, 110-first swing frame, 111-first mounting beam, 112-first swing frame first beam, 113-first swing frame second beam, 114-first swing frame third beam, 115-first swing frame fourth beam, 116-first swing frame fifth beam, 117-first mounting port, 118-first mounting groove, 119-scale on first swing frame, 120-first pipe bracket, 121-first clamping port, 122-first clamping plate, 123-second clamping plate, 124-connecting pin, 125-connecting pin hole, 126-threaded hole, 200-second swing assembly, 210-second swing frame, 220-second pipe bracket, 221-second clamping opening, 222-third clamping plate, 300-angle adjustment guide unit, 310-rotating shaft, 320-guide shaft, 330-limit frame, 331-guide groove, 332-first guide rod, 333-second guide rod, 334-scale on limit frame, 400-first radial moving unit, 410-first lead screw, 420-first adjusting hand wheel, 500-second radial moving unit, 510-second lead screw, 520-second adjusting hand wheel, 610-first guide rail, 620-second guide rail, 710-jackscrew, 800-hinge, scale on 801-hinge, 900-fastening bolt.

Detailed Description

Hereinafter, the auxiliary device for an arc-shaped duct of the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the present application, the "first end" of each component may be an "upper end" shown in the drawing, and the "second end" may be a "lower end" shown in the drawing, where the "upper end" and the "lower end" are consistent with the up-down direction of the drawing, but the structure of the component of the present disclosure is not limited, for example, after the direction of the component shown in the drawing is changed, the "first end" may also be a "left end" shown in the drawing, and the "second end" may be a "right end" shown in the drawing.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

It should also be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.

Aiming at the problems that the angle of the arc-shaped pipeline is difficult to measure and the cutting line is further difficult to draw on the arc surface, the invention provides an auxiliary device of the arc-shaped pipeline, which comprises a first swinging component and a second swinging component. The first swinging assembly comprises a first swinging frame and a first pipe bracket arranged on the first swinging frame, and a first clamping opening for the arc-shaped pipeline to pass through is formed in the first pipe bracket; the second swinging assembly comprises a second swinging frame and a second pipe bracket arranged on the second swinging frame, a second clamping opening for the arc-shaped pipeline to pass through is formed on the second pipe bracket, and the second swinging frame is pivoted with the first swinging frame so as to adjust the opening and closing angle between the second swinging frame and the first swinging frame and meet the measurement and/or line drawing of different angles of the arc-shaped pipeline.

According to the invention, the angle of the arc-shaped pipeline can be accurately measured by measuring the rotation angle between the first swing frame and the second swing frame, and the problem that the angle cannot be accurately ensured when the arc-shaped pipeline is drawn is solved.

FIG. 1 is a schematic view showing an operation state of an auxiliary device of an arc-shaped pipe according to an exemplary embodiment of the present invention; FIG. 2 is a schematic view showing an auxiliary device closing state of an arc-shaped pipe according to an exemplary embodiment of the present invention; FIG. 3 is a schematic view showing the structure of the first swing frame of FIG. 1; FIG. 4 shows a schematic structural view of the first tube bracket of FIG. 1; fig. 5 shows a schematic structural view of the stopper in fig. 1.

As shown in fig. 1 to 5, in one exemplary embodiment, the auxiliary device for an arc-shaped pipe may include a first swing assembly 100, a second swing assembly 200, an angle adjustment guide unit 300, a first radial moving unit 400, a second radial moving unit 500, a first limit assembly, and a fastening unit.

Wherein the first swing assembly 100 and the second swing assembly 200 have the same structure. Accordingly, in the following description, a structure of the first swing assembly 100 will be mainly described in detail as an example.

The first swing assembly 100 may include a first swing frame 110 and a first pipe bracket 120 disposed on the first swing frame 110.

As shown in fig. 2 and 3, the first swing frame 110 may include a hollowed-out first swing frame body and a first mounting beam 111 disposed in the first swing frame body. The first swing frame body is formed by five beams connected end to end, that is, the first swing frame 110 is formed by connecting a first beam 112, a second beam 113, a third beam 114, a fourth beam 115, and a fifth beam 116 to each other. The first end of the first mounting beam 111 is connected to the junction of the first beam 112 and the second beam 113, and the second end of the first mounting beam 111 is connected to the junction of the fourth beam 115 and the fifth beam 116. The first mounting beam 111 divides the first swing frame body into two parts. Wherein the first part is a triangular frame structure consisting of a first beam 112, a fifth beam 116 and a first mounting beam 111. The second portion is a rectangular frame structure constituted by the second beam 113, the third beam 114, the fourth beam 115, and the first mounting beam 111. The rectangular frame structure forms a first mounting opening 117 for mounting the first tube bracket 120.

The first mounting beam 111 is provided with a through hole through which a first lead screw 410 (to be described later) passes and a first mounting groove 118. The first mounting groove 118 is used to mount a first adjustment hand wheel 420 (described later).

The first tube carrier 120 is disposed within the first mounting opening 117 and functions to carry the arcuate tube. As shown in fig. 4, a first clamping opening 121 through which the arc-shaped pipe is passed is formed on the first pipe bracket 120. The first clamping port 121 is formed in a ring shape corresponding to an arc-shaped pipe. The first pipe bracket body is of a cube structure, and a central part of the first pipe bracket body is provided with an opening to form an annular clamping space (namely, a first clamping opening). The arcuate conduit may pass through and be disposed in the first clamping port 121.

As shown in fig. 1, after the arc-shaped pipe is placed in the first clamping opening 121, in order to clamp the arc-shaped pipe more firmly, the arc-shaped pipe 1 may be fixed with respect to the first pipe bracket 120 by a fastening unit. The fastening unit may comprise one or more fasteners. The fastener may be a jackscrew 710. The second tube bracket 220 is provided with a through hole through which the jackscrew 710 passes. The jackscrew 710 may have a pointed end that abuts the outer wall of the arcuate tube 1 after passing through the through hole. The arc-shaped pipeline 1 can be fixed by tightening the jackscrews 710, so that the line drawing accuracy is improved. In addition to the fixing function, the inner diameter of the first clamping opening 121 can be changed by rotating the jackscrew 710, so that the arc-shaped pipelines 1 with different pipe diameters can be met. In the present embodiment, four jackscrews 710 are uniformly spaced in the circumferential direction, but the present invention is not limited thereto, and other fastening members may be used in addition to the jackscrews 710, and the number and arrangement of the jackscrews 710 may be adjusted as required.

The first radial moving unit 400 is configured to drive the first pipe bracket 120 to move back and forth along the bending radius direction R of the arc-shaped pipe 1 relative to the first swing frame 110, so as to satisfy the arc-shaped pipes with different bending radii.

The first radial moving unit 400 may include a first lead screw 410. The first lead screw 410 is disposed along the bending radius direction R and a first end of the first lead screw 410 is fixedly coupled to the first pipe bracket 120, and a second end of the first lead screw 410 is screw-coupled with the first swing frame 110. The first pipe bracket 120 is driven to move back and forth on the first swing frame 110 by the rotation of the first screw 410.

For ease of operation, a first adjustment hand wheel 420 may also be provided. As described above, the first swing frame 110 is provided with the first mounting groove 118, the first adjusting hand wheel 420 may be disposed in the first mounting groove 118, and the first adjusting hand wheel 420 is sleeved on the first screw 410, and the first adjusting hand wheel 420 is formed with the threaded hole 126 for being screwed with the first screw 410. By rotating the first adjusting hand wheel 420, the first screw 410 is driven to rotate, and the first pipe bracket 120 is driven to move to a proper position relative to the first swing frame 110.

That is, the first lead screw 410 serves to connect the first swing frame 110, the first pipe bracket 120, and the first adjustment hand wheel 420, and to convert the rotation of the first adjustment hand wheel 420 into the movement of the first pipe bracket 120 with respect to the first swing frame 110. However, the present invention is not limited thereto, and the first radial moving unit 400 may be other implemented radial moving driving elements capable of driving the first pipe bracket 120 and the first swing frame 110 to move relatively, so as to adapt to the arc-shaped pipe 1 with different bending radii, for example, may be an air cylinder, an electric screw, a bolt and nut, or the like.

The first swing frame 110 may have graduations formed thereon. For example, the side of the second beam 113 may be formed with graduations 119 to intuitively and accurately determine the moving distance of the first pipe bracket 120 with respect to the first swing frame 110, satisfying the auxiliary device being suitable for the arc-shaped pipes 1 of different bending radii.

To ensure that the movement of the first tube carrier 120 relative to the first swing frame 110 follows a predetermined trajectory. The first pipe bracket 120 may be disposed on the first swing frame 110 through a first limiting assembly. The first stopper assembly may include a first rail 610 and a first rail groove that extend in a bending radius direction of the arc-shaped pipe 1 and are engaged with each other, the first rail 610 being formed on one of the first pipe bracket 120 and the first swing frame 110, and the first rail groove being formed on the other of the first pipe bracket 120 and the first swing frame 110 and being movable with respect to the first rail 610.

In the embodiment shown in the drawings, the first rail grooves may be formed on the top and bottom surfaces of the first pipe bracket 120. The first track groove may be a groove structure. The first guide rail 610 may be formed in a protruding structure capable of being received in the groove structure and relatively slid, and the first guide rail 610 may be formed in a straight line shape.

The first guide rail 610 and the first rail groove are nested with each other, and the arrangement positions thereof are interchangeable. By the cooperation of the first guide rail 610 and the first rail groove, the first pipe bracket 120 can serve as an auxiliary guide in the process of moving relative to the first swing frame 110, and the degree of freedom of movement can be restricted.

In the present embodiment, as shown in fig. 1 and 4, the top surface of the first pipe bracket 120 faces the second beam 113 of the first swing frame, and the first guide rail 610 is formed on the second beam 113 of the first swing frame. Two clamping plates (i.e., a first clamping plate 122 and a second clamping plate 123) may be formed on the top surface of the first tube bracket 120. The first card 122 and the second card 123 face each other and are spaced apart to form a first rail groove.

Wherein one of the first clamping plate 122 and the second clamping plate 123 is detachably connected with the first pipe bracket 120. In this embodiment, the first clamping plate 122 may be integrally formed on the top surface of the first tube bracket 120. The second clamping plate 123 and the first pipe bracket 120 are detachably connected together through a connecting pin 124. The number of the connection pins 124 may be four. The first pipe bracket body may have a connection pin hole 125 formed thereon corresponding to the connection pin 124.

When the first pipe bracket 120 is installed in the first installation opening 117, the first clamping plate 122 is attached to one side wall of the first guide rail 610, the first clamping plate 122 is attached to the other side wall of the first guide rail 610, and the connecting pin 124 is inserted into the connecting pin hole 125, so that the second clamping plate 123 is connected with the first pipe bracket 120, a first rail groove is formed between the first clamping plate 122 and the second clamping plate 123, and the first guide rail 610 can be nested in the first rail groove, so that the first guide rail 610 and the first rail groove cannot be separated from each other in the bending radius direction of the arc-shaped rail. When the first pipe bracket 120 needs to be detached from the first swing frame 110, the connection pin 124 can be taken out from the connection pin hole 125, and the second clamping plate 123 can be taken away, so that the first pipe bracket 120 is separated from the first guide rail 610.

Similarly, a guide rail may be formed on the fourth beam 115 of the first swing frame, and two clamping plates spaced apart from each other may be provided on the bottom surface (a side surface facing the fourth beam 115) of the first pipe bracket 120, thereby forming a rail groove. So that the upper and lower sides of the first pipe bracket 120 are provided with the cooperation of the guide rail and the rail groove, and the movement of the first pipe bracket 120 relative to the first swing beam along the bending radius direction R of the arc-shaped pipe 1 is guided and restricted.

The second swing assembly 200 may include a second swing frame 210 and a second pipe bracket 220 disposed on the second swing frame 210. The second pipe bracket 220 is formed with a second clamping opening 221 through which the arc-shaped pipe 1 passes. The second clamping port 221 may be formed in a ring shape corresponding to the arc-shaped pipe 1. The second swing frame 210 may be formed with a second mounting opening therein, in which the second pipe bracket 220 is placed. The second pipe bracket 220 is provided with a through hole through which a fastener (e.g., a jackscrew) passes, and the jackscrew is pushed against the outer wall of the arc-shaped pipe 1 after passing through the through hole. The inner diameter of the second clamping opening 221 on the second pipe bracket 220 is changed by rotating the jackscrew, so that the arc-shaped pipeline 1 with different pipe diameters is met, the arc-shaped pipeline 1 can be fixed by tightening the jackscrew, and the line drawing accuracy is improved. The second swing frame 210 is provided with a second mounting groove. The structure of the second swing frame 210 is the same as that of the first swing frame 110 and will not be described in detail herein.

The second radial moving unit 500 may be used to move the second pipe bracket 220 back and forth in the bending radius direction R of the arc-shaped pipe with respect to the second swing frame 210. The second radial moving unit 500 is similar in structure and function to the first radial moving unit 400.

For example, the second radial moving unit 500 may include a second lead screw 510. The second lead screw 510 is disposed in a bending radius direction and a first end of the second lead screw 510 is fixedly coupled to the second pipe bracket 220, and a second end of the second lead screw 510 is screw-coupled with the second swing frame 210.

The second swing frame 210 is provided with a second installation groove, the second adjusting hand wheel 520 is arranged in the second installation groove, the second adjusting hand wheel 520 is sleeved on the second lead screw 510, and a threaded hole in threaded connection with the second lead screw 510 is formed in the second adjusting hand wheel 520.

The second pipe bracket 220 is disposed on the second swing frame 210 through a second limiting assembly. The specific structure of the second spacing assembly is the same as that of the first spacing assembly and will not be described herein.

For example, the second limiting assembly may include a second rail 620 and a second rail groove that extend in a bending radius direction of the arc-shaped pipe 1 and are engaged with each other, the second rail 620 being formed on one of the second pipe bracket 220 and the second swing frame 210, and the second rail groove being formed on the other of the second pipe bracket 220 and the second swing frame 210 and being movable with respect to the second rail 620.

The second rail groove may be formed on the top and bottom surfaces of the second pipe bracket 220, the second rail groove being a groove structure, and the second rail 620 may be formed as a protrusion structure capable of being received in the groove structure and relatively slid. The second guide rail 620 and the second rail groove are nested with each other, and the positions thereof are interchangeable.

Two clamping plates, namely, a third clamping plate 222 and a fourth clamping plate, can be formed on the top surface and the bottom surface of the second pipe bracket 220, and the third clamping plate 222 and the fourth clamping plate are spaced to form a second track groove, wherein one of the third clamping plate 222 and the fourth clamping plate is detachably connected with the second pipe bracket 220. The structure and arrangement of the third clamping plate 222 and the fourth clamping plate are the same as those of the first clamping plate 122 and the second clamping plate 123, and will not be described herein. In this embodiment, the third clamping plate 222 and the second pipe bracket 220 may be connected by a connecting pin.

The second adjusting hand wheel 520 can be rotated to drive the second screw 510 to rotate, so as to drive the second pipe bracket 220 to move on the second guide rail 620 of the second swing frame 210, so as to meet the requirement of the arc-shaped pipeline 1 with different bending radiuses.

The second swing frame 210 is pivotally connected to the first swing frame 110 to adjust the opening and closing angle between the second swing frame 210 and the first swing frame 110, so as to meet the measurement and/or line drawing of different angles of the arc-shaped pipeline.

In this embodiment, the second swing frame 210 and the first swing frame 110 may be pivoted by a hinge 800. Hinge 800 functions to provide a center of rotation for the entire device.

The hinge 800 may be formed with a scale 801 for reading the bending angle of the arc-shaped pipe, usually 0 ° to 90 °, or may be used for making an angle range according to the bending degree and the size of the measured arc-shaped pipe, so as to display the opening and closing angle between the second swing frame 210 and the first swing frame 110, and can measure the opening and closing angle between the first swing frame 110 and the second swing frame 210, thereby measuring the angle of the arc-shaped pipe 1.

The hinge 800 is detachably coupled to the second swing frame 210 and the first swing frame 110 by fasteners such as bolts. The hinge 800 may be provided with a threaded hole through which a bolt passes. The hinge 800 is connected to the first swing frame 110 and the second swing frame 210 by fastening bolts 900.

In order to guide and limit the rotation between the second swing frame 210 and the first swing frame 110, an angle adjustment guide unit 300 may be further included. The angle adjustment guide unit 300 may serve as an auxiliary guide during rotation of the first swing frame 110 with respect to the second swing frame 210, restraining the degree of freedom of rotation.

As shown in fig. 1, 2 and 5, the angle adjustment guide unit 300 may include a rotation shaft 310, a guide shaft 320, and a limit frame 330. The rotation shaft 310 may be provided on one of the second pipe bracket 220 and the first swing frame 110. The guide shaft 320 may be provided on the other of the second pipe bracket 220 and the first swing frame 110.

In the present embodiment, the rotation shaft 310 is fixedly provided on the first swing frame 110, and the guide shaft 320 is provided on the second swing frame 210.

One end of the limiting frame 330 is rotatably connected with the rotating shaft 310, a guide groove 331 is formed on the limiting frame 330, and the guide shaft 320 can be inserted into the guide groove 331 and slidably disposed in the guide groove 331. Along with the swing of the second swing frame 210, the guide shaft 320 moves along the guide groove 331 of the stopper 330.

The stopper 330 may include a first guide rod 332 and a second guide rod 333. A first end of the first guide rod 332 is rotatably coupled to the rotation shaft 310. The first end of the second guide rod 333 is connected to the second end of the first guide rod 332, and the second guide rod 333 forms an angle θ with the first guide rod 332. The guide groove 331 is formed on the second guide rod 333 in the length direction. The angle θ can ensure that the guide shaft 320 relatively slides in the guide groove 331 in the length direction when the opening and closing angle between the second swing frame 210 and the first swing frame 110 is adjusted. For example, the included angle θ may be 60 to 120 °. In view of the convenience of carrying after being taken up, the angle θ may be preferably 90 °, that is, the second guide rod 333 and the first guide rod 332 are perpendicular to each other, as shown in fig. 5, so that the auxiliary device occupies a small volume when being folded up in the closed state as shown in fig. 2. However, the invention is not limited thereto, and the angle of the included angle may also be changed according to the measured arc-shaped pipe size.

After the opening and closing degrees of the first swing frame 110 and the second swing frame 210 are properly adjusted, the angle adjustment guide unit 300 may further include a locking member for locking the relative sliding between the guide shaft 320 and the guide groove 331 in order to maintain the adjusted line drawing angle. The locking member may be a nut sleeved on the guide shaft 320. When the second swing frame 210 and the first swing frame 110 rotate to a desired opening and closing angle, the limiting frame 330 and the second swing frame 210 can be fixed by tightening the nuts, so as to limit the rotation of the second swing frame 210 and the first swing frame 110, and improve the line drawing accuracy of the arc-shaped pipeline 1.

The scale 334 can also be formed on the limiting frame 330, and the angle of the arc-shaped pipeline can be verified again by reading the scale 334 on the limiting frame 330.

According to the auxiliary device of the arc-shaped pipeline 1 of the exemplary embodiment of the invention, the sizes of the pipe bracket and the swinging frame can be adjusted according to the pipe diameter of the actual arc-shaped pipeline 1.

In addition, the auxiliary device may further comprise a cutting tool and a scribing tool. The line drawing tool may be a stone pen.

Hereinafter, a process of using the auxiliary device according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

S1, calculating the angle of the arc-shaped pipeline 1 needing to be drawn, horizontally placing the arc-shaped pipeline 1 by using a height ruler, and drawing four reference lines on the arc-shaped pipeline 1. The number of reference lines may be adjusted as desired, for example, to two, three, five or more reference lines.

S2, rotating the first adjusting hand wheel 420 and the second adjusting hand wheel 520 drives the first lead screw 410 and the second lead screw 510 to enable the first pipe bracket 120 to move to a proper position along the first guide rail 610 on the first swing frame 110, and the second pipe bracket 220 to move to a proper position along the second guide rail 620 on the second swing frame 210.

S3, the arc-shaped pipeline 1 is put in through the first clamping opening 121 of the first pipe bracket 120 and the second clamping opening 221 of the second pipe bracket 220.

And S4, rotating the first swing frame 110 to a required angle relative to the second swing frame 210 according to the angle scale on the hinge 800.

S5, adjusting the four jackscrews 710 on the first pipe bracket 120 and the second pipe bracket 220, and adjusting the tips of the four jackscrews 710 to align with the four reference lines. The four jackscrews 710 are then tightened to secure the arcuate tube 1.

S6, checking whether the corresponding angle on the hinge 800 is correct again, and screwing the bolt after the angle is correct, so that the first swing frame 110 and the second swing frame 210 are relatively fixed.

S7, carrying out line drawing operation on the arc-shaped pipeline 1 by using a stone pen.

S8, performing cutting operation by using a cutting tool.

According to the auxiliary device for the arc-shaped pipeline, disclosed by the embodiment of the invention, the opening and closing angles of the swinging frame can be adjusted, the measurement and line drawing of different angles of the arc-shaped pipeline are met, and the angles are carved on the hinge, so that the rotating angle of the swinging frame can be accurately measured, and the angle of the arc-shaped pipeline can be accurately and rapidly determined.

According to the auxiliary device for the arc-shaped pipeline, provided by the exemplary embodiment of the invention, the rotation of the adjusting hand wheel is regulated to drive the screw rod to rotate, so that the pipe bracket is driven to move forwards and backwards, and different arc-shaped pipelines are met.

According to the auxiliary device for the arc-shaped pipeline, provided by the exemplary embodiment of the invention, the scales are arranged on the swinging frames, and the moving distance of the pipe bracket on the guide rail can be adjusted through the scales on the two swinging frames, so that the arc-shaped pipeline with different bending radiuses can be satisfied.

According to the auxiliary device for the arc-shaped pipeline, provided by the embodiment of the invention, the scale can be formed on the limiting frame, and the angle of the arc-shaped pipeline can be verified again by reading the scale on the limiting frame.

According to the auxiliary device for the arc-shaped pipeline, the limiting frame is arranged on the swinging frame, and the bolt on the limiting frame can be screwed down to ensure that the swinging frame does not deflect in the line drawing process, so that the angle of the arc-shaped pipeline is ensured, and the line drawing precision is improved.

According to the auxiliary device for the arc-shaped pipeline, which is disclosed by the embodiment of the invention, the jackscrews are arranged on each pipe bracket, and by rotating the jackscrews, the arc-shaped pipeline can not rotate in the process of drawing lines, so that the accuracy of drawing lines is ensured, and the arc-shaped pipelines with different pipe diameters can be met.

The auxiliary device for the arc-shaped pipeline can be used for measuring and drawing angles of the arc-shaped pipeline, improves the accuracy of angle measurement and the accuracy of drawing the lines, is simple to operate, can be operated by a single person, occupies a small space and is convenient to carry.

Although the present invention has been described above by way of the combination of the exemplary embodiments, it should be apparent to those skilled in the art that various modifications and changes can be made to the exemplary embodiments of the present invention without departing from the spirit and scope defined in the appended claims.

Claims

1. An auxiliary device for an arcuate duct, said auxiliary device comprising:

the first swinging assembly comprises a first swinging frame and a first pipe bracket arranged on the first swinging frame, a first mounting opening is formed in the first swinging frame, the first pipe bracket is arranged in the first mounting opening, a first clamping opening for the arc-shaped pipeline to pass through is formed in the first pipe bracket, and the first clamping opening is formed into a ring shape corresponding to the arc-shaped pipeline; and

the second swinging assembly comprises a second swinging frame and a second pipe bracket arranged on the second swinging frame, a second mounting opening is formed in the second swinging frame, the second pipe bracket is arranged in the second mounting opening, a second clamping opening for the arc-shaped pipeline to pass through is formed in the second pipe bracket, the second clamping opening is formed into a ring shape corresponding to the arc-shaped pipeline, and the second swinging frame is pivoted with the first swinging frame so as to adjust the opening and closing angle between the second swinging frame and the first swinging frame, so that measurement and/or line drawing of different angles of the arc-shaped pipeline are met;

the first swing frame and/or the second swing frame are/is provided with scales;

the auxiliary device further includes an angle adjustment guide unit including:

a rotation shaft provided on one of the second swing frame and the first swing frame;

a guide shaft provided on the other of the second swing frame and the first swing frame; and

the limiting frame is rotatably connected with the rotating shaft at one end, a guide groove is formed in the limiting frame, and the guide shaft is inserted into the guide groove and is arranged in the guide groove in a sliding manner;

the limit frame comprises:

the first end of the first guide rod is rotatably connected with the rotating shaft; and

the first end of the second guide rod is connected with the second end of the first guide rod, an included angle is formed between the second guide rod and the first guide rod, the guide groove is formed on the second guide rod along the length direction, and when the opening and closing angle between the second swing frame and the first swing frame is regulated, the guide shaft relatively slides along the length direction in the guide groove, and the included angle is 60-120 degrees;

the first swing frame comprises a first beam, a second beam, a third beam, a fourth beam and a fifth beam which are connected end to end, and a first mounting beam arranged in the first swing frame body; the first beam, the fifth beam and the first mounting beam form a triangular frame structure, the second beam, the third beam, the fourth beam and the first mounting beam form a rectangular frame structure, and the first mounting opening is formed in the rectangular frame structure;

the auxiliary device further comprises a fastening unit, the fastening unit comprises a fastening piece, through holes for the fastening piece to pass through are formed in the first pipe bracket and the second pipe bracket, and the fastening piece abuts against the outer wall of the arc-shaped pipeline after passing through the through holes.

2. The auxiliary device for an arc-shaped pipe according to claim 1, wherein the angle adjusting guide unit further comprises a locking member for locking the relative sliding between the guide shaft and the guide groove, and the locking member is a nut sleeved on the guide shaft.

3. The arcuate duct assist apparatus of claim 1, further comprising:

the first radial moving unit is used for driving the first pipe bracket to move back and forth relative to the first swinging frame along the bending radius direction of the arc-shaped pipeline; and/or

And the second radial moving unit is used for driving the second pipe bracket to move back and forth along the bending radius direction of the arc-shaped pipeline relative to the second swinging frame.

4. The arcuate duct assist of claim 3 wherein said first radial moving unit comprises: the first lead screw is arranged along the bending radius direction, the first end of the first lead screw is fixedly connected to the first pipe bracket, and the second end of the first lead screw is in threaded connection with the first swing frame;

the second radial moving unit includes: and the second lead screw is arranged along the bending radius direction, the first end of the second lead screw is fixedly connected to the second pipe bracket, and the second end of the second lead screw is in threaded connection with the second swing frame.

5. The auxiliary device for the arc-shaped pipeline according to claim 4, wherein a first mounting groove is formed in the first swinging frame, a first adjusting hand wheel is arranged in the first mounting groove, the first adjusting hand wheel is sleeved on the first screw rod, and a threaded hole in threaded connection with the first screw rod is formed in the first adjusting hand wheel;

the second swing frame is provided with a second mounting groove, the second adjusting hand wheel is arranged in the second mounting groove, the second adjusting hand wheel is sleeved on the second screw rod, and a threaded hole in threaded connection with the second screw rod is formed in the second adjusting hand wheel.

6. The arcuate duct assist apparatus of claim 1, wherein the first pipe bracket is disposed on the first swing frame by a first stop assembly, the first stop assembly including a first rail and a first rail groove extending in a radius of curvature of the arcuate duct, the first rail being formed on one of the first pipe bracket and the first swing frame, the first rail groove being formed on the other of the first pipe bracket and the first swing frame and being movable relative to the first rail;

the second pipe bracket is arranged on the second swinging frame through a second limiting assembly, the second limiting assembly comprises a second guide rail and a second track groove, the second guide rail and the second track groove extend along the bending radius direction of the arc-shaped pipeline and are matched with each other, the second guide rail is formed on one of the second pipe bracket and the second swinging frame, and the second track groove is formed on the other of the second pipe bracket and the second swinging frame and can move relative to the second guide rail.

7. The auxiliary device for an arc-shaped pipe according to claim 6, wherein the first rail groove is formed on the top and bottom surfaces of the first pipe bracket, the first rail groove is a groove structure, and the first rail is formed as a protrusion structure capable of being received in the groove structure and relatively slid;

the second rail groove is formed on the top and bottom surfaces of the second pipe bracket, the second rail groove is of a groove structure, and the second guide rail is formed as a protruding structure capable of being accommodated in the groove structure and capable of sliding relatively.

8. The arcuate conduit assist of claim 7 wherein said first tube carrier has first and second clamp plates formed on both a top surface and a bottom surface thereof, said first and second clamp plates being spaced apart to form said first track groove, wherein one of said first and second clamp plates is removably connected to said first tube carrier;

and a third clamping plate and a fourth clamping plate are formed on the top surface and the bottom surface of the second pipe bracket, and are spaced apart to form the second track groove, wherein one of the third clamping plate and the fourth clamping plate is detachably connected with the second pipe bracket.

9. The auxiliary device for an arc-shaped pipe according to claim 1, wherein the fastening unit comprises 4 fasteners, and the four fasteners are uniformly spaced apart in a circumferential direction.

10. The auxiliary device for the arc-shaped pipeline according to claim 1, wherein the second swing frame is pivoted with the first swing frame through a hinge, and scales are formed on the hinge for reading the angle of the arc-shaped pipeline;

the limiting frame is provided with scales for reading the angle of the arc-shaped pipeline.

11. The auxiliary device according to any one of claims 1 to 10, further comprising a cutting tool and a line drawing tool.