CN114850577A - Pipeline beveling machine - Google Patents

Abstract

The application discloses pipeline beveling machine belongs to pipeline welding technical field. This pipeline beveling machine includes: the device comprises a main shaft, and a first driving assembly, a tensioning assembly, a cutting assembly and a second driving assembly which are sleeved on the main shaft. When the first driving assembly and the tensioning assembly are positioned in the pipeline to be cut, the first driving assembly can drive the plurality of tensioning blocks in the tensioning assembly to move towards the direction of the inner wall of the pipeline to be cut. Under the effect of the synchronizer ring, the plurality of tensioning blocks can move towards the direction of the inner wall of the pipeline to be notched at the same time, so that the plurality of tensioning blocks can be abutted against the inner wall of the pipeline at the same time, after the tensioning assembly is fixed on the inner wall of the pipeline to be notched, the coincidence degree of the axial lead of the spindle sleeved by the tensioning assembly and the axial lead of the pipeline to be notched is high. Therefore, after the end face of one end of the pipeline to be cut is cut by the cutting assembly, the quality of the formed groove is high.

Description

Pipeline beveling machine

Technical Field

The application relates to the technical field of pipeline welding, in particular to a pipeline beveling machine.

Background

In order to facilitate oil and gas transmission, the oil and gas pipelines in service are mostly long-distance pipelines which are usually formed by welding multiple sections of pipelines. At present, two adjacent sections of pipelines can be welded by adopting an automatic welding technology so as to improve the welding efficiency of the pipelines.

In order to ensure the welding quality, a pipeline beveling machine is required to bevel the end face of the pipeline. In the related art, a pipe beveling machine mainly includes: the pipeline cutting device comprises a tensioning part abutted against the inner wall of the pipeline and a cutting part used for cutting the end face of the pipeline.

However, after the tensioning portion of the current pipeline beveling machine is abutted against the inner wall of the pipeline, the axis of the tensioning portion is difficult to coincide with the axis of the pipeline, so that the quality of a bevel formed by cutting the end face of the pipeline by the cutting portion of the pipeline beveling machine is poor, and the welding quality is poor when the pipeline is subsequently welded.

Disclosure of Invention

The embodiment of the application provides a pipeline beveling machine. The problem of the relatively poor quality of the groove that the end face of the pipeline is cut by the pipeline beveling machine in the prior art can be solved, the technical scheme is as follows:

there is provided a pipe beveling machine comprising:

the device comprises a main shaft, a first driving assembly, a tensioning assembly, a cutting assembly and a second driving assembly, wherein the first driving assembly, the tensioning assembly, the cutting assembly and the second driving assembly are sleeved on the main shaft;

the tight subassembly that rises includes: the first guide flange is fixedly connected with the first driving assembly, the second guide flange is fixedly connected with the main shaft, the synchronizing ring is slidably connected with the main shaft, the plurality of tensioning blocks are distributed around the main shaft and are all positioned between the first guide flange and the plurality of second guide flanges, and each tensioning block is movably connected with the first guide flange and the second guide flange and is clamped with the synchronizing ring;

the first drive assembly is configured to: when the main shaft extends into a pipeline to be cut, the main shaft moves towards the direction close to the tensioning assembly so as to drive the plurality of tensioning blocks to move towards the direction close to the inner wall of the pipeline simultaneously, and each tensioning block is enabled to be abutted against the inner wall of the pipeline;

the cutting pin assembly is positioned on one side of the tensioning assembly, which is far away from the first driving assembly, and the cutting assembly is movably connected with the main shaft;

the second driving assembly is connected with one side of the cutting pin assembly, which is far away from the tensioning assembly, and the second driving assembly is configured to: after each tensioning block in the tensioning assembly is abutted to the inner wall of the pipeline, the cutting pin assembly is driven to rotate on the main shaft, so that the cutting pin assembly cuts the end face of one end of the pipeline.

Optionally, each tensioning block is strip-shaped, and two ends of each tensioning block are provided with a first inclined surface, and the first inclined surfaces are located on one sides, close to the synchronizing rings, of the tensioning blocks;

the first guide flange and the second guide flange are respectively provided with a plurality of guide grooves corresponding to the plurality of tensioning blocks one to one, and the bottom surface of each guide groove is a second inclined surface matched with the first inclined surface of the corresponding tensioning block.

Optionally, both ends of each tensioning block are provided with at least one arc-shaped protruding structure, and the protruding structures are located on one side of the tensioning block, which is far away from the synchronizing ring.

Optionally, each tensioning block is close to one side of synchronizer ring has a joint groove, synchronizer ring and every joint groove joint in the tensioning block.

Optionally, the tensioning assembly further comprises: and each annular elastic connecting piece is respectively connected with the plurality of tensioning blocks.

Optionally, each of the annular elastic connectors includes: the tension device comprises a plurality of spring connecting pieces and a plurality of tension springs, wherein the spring connecting pieces are connected with the tension blocks in a one-to-one correspondence mode, and two ends of each tension spring are respectively connected with two adjacent spring connecting pieces.

Optionally, the pipe beveling machine further includes: a third drive assembly connected to a side of the second drive assembly remote from the spindle, the third drive assembly configured to: when the second driving component drives the cutting pin component to rotate on the main shaft, the second driving component is driven to move towards the direction close to one end of the pipeline.

Optionally, the pipe beveling machine further includes: the suspension box body is connected with the third driving assembly;

the third drive assembly includes: a thrust plate, a thrust structure and a plurality of thrust rods;

the plurality of thrust rods penetrate through the suspension box body, a first end of each thrust rod is fixedly connected with one side, far away from the main shaft, of the second driving assembly, a second end of each thrust rod is fixedly connected with the thrust plate, the pushing structure is respectively fixedly connected with the suspension box body and the thrust plate, and the pushing structure is configured to: the thrust plate is driven to move towards the direction close to or far away from the suspension box body.

Optionally, the pushing structure comprises: a pushing cylinder body and a telescopic rod movably connected with the pushing cylinder body, wherein one end of the telescopic rod is positioned outside the pushing cylinder body, the other end of the telescopic rod is positioned in the pushing cylinder body,

the pushing cylinder body is fixedly connected with one side, far away from the second driving assembly, of the hanging box body, and one end, located outside the pushing cylinder body, of the telescopic rod is fixedly connected with the thrust plate.

Optionally, the cutting assembly comprises: a rotating disk coupled to the second drive assembly, and a plurality of profiling cutters coupled to the rotating disk;

each of the contour cutters includes: a cutter seat movably connected with the rotating disc, and a profiling wheel and a cutting knife connected with the cutter seat.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

this pipeline beveling machine includes: the device comprises a main shaft, and a first driving assembly, a tensioning assembly, a cutting assembly and a second driving assembly which are sleeved on the main shaft. When the first driving assembly and the tensioning assembly are positioned in the pipeline to be cut, the first driving assembly can drive the plurality of tensioning blocks in the tensioning assembly to move towards the direction of the inner wall of the pipeline to be cut. Because in the tensioning assembly, the plurality of tensioning blocks are clamped with the synchronizing ring, and under the action of the synchronizing ring, the plurality of tensioning blocks can simultaneously move towards the direction of the inner wall of the pipeline to be notched, therefore, the plurality of tensioning blocks can simultaneously abut against the inner wall of the pipeline, so that after the tensioning assembly is fixed on the inner wall of the pipeline to be notched, the coincidence degree of the axial lead of the spindle sleeved by the tensioning assembly and the axial lead of the pipeline to be notched is higher. So, after adopting the second drive assembly that is located the pipeline of treating the incision outside to drive cutting assembly and cut the terminal surface of this one end of treating the pipeline of incision, the quality that forms the groove on the terminal surface of this one end of treating the pipeline of incision is higher, the effectual welding quality when having improved follow-up welding to the pipeline.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a pipe beveling machine provided in an embodiment of the present application;

FIG. 2 is a schematic structural view of another pipe beveling machine used in the embodiments of the present application;

FIG. 3 is a side view of the pipe beveling machine shown in FIG. 2;

fig. 4 is a schematic structural view of a tensioning block provided in the embodiment of the present application;

fig. 5 is a front view of the tensioning block shown in fig. 4.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a pipe beveling machine according to an embodiment of the present disclosure. The pipe beveling machine may include:

the spindle 100, and the first driving assembly 200, the tensioning assembly 300, the cutting assembly 400 and the second driving assembly 500 sleeved on the spindle 100.

The tensioning assembly 300 may include: a first guide flange 301, a second guide flange 302, a synchronizing ring 303 and a plurality of tensioning blocks 304.

The first guide flange 301 may be fixedly connected to the first driving assembly 200. The second guide flange 302 may be fixedly connected to the main shaft 100. The synchronizing ring 303 may also be slidably coupled to the main shaft 100. The plurality of tension blocks 304 are distributed around the main shaft 100, and the plurality of tension blocks 304 are all located between the first guide flange 301 and the second guide flange 302. Each tensioning block 304 is movably connected with the first guide flange 301 and the second guide flange 302 respectively, and each tensioning block 304 can be clamped with the synchronizing ring 303.

The first drive assembly 200 is configured to: when the main shaft 100 extends into the pipe to be cut, it moves to a direction close to the tension assembly 300. In the present application, since the first guiding flange 301 of the tensioning assembly 300 is fixedly connected to the first driving assembly 200, the second guiding flange 302 is fixedly connected to the main shaft 100. Therefore, when the first driving assembly 200 moves on the main shaft 100 to a direction close to the tension assembly 300, the first guiding flange 301 follows the first driving assembly 200 to move on the main shaft 300, and the second guiding flange 302 does not move on the main shaft 300. In this case, each of the tensioning blocks 304 in the tensioning assembly 300 is movably connected to the first guide flange 301 and the second guide flange 302, and each of the tensioning blocks 304 can be clamped to the synchronizing ring 303, so that under the action of the synchronizing ring 303, the plurality of tensioning blocks 304 in the tensioning assembly 300 simultaneously move toward the direction close to the inner wall of the pipe to be notched, so that each of the tensioning blocks 304 can abut against the inner wall of the pipe, and the tensioning assembly 300 can be fixed on the inner wall of the pipe.

The pin cutting assembly 400 is located on a side of the tensioning assembly 300 away from the first driving assembly 200. The cutting pin assembly 400 is movably connected to the main shaft.

The second driving assembly 500 may be coupled to a side of the cutting assembly 400 remote from the tensioning assembly 300. The second drive assembly 500 may be configured to: after each tensioning block 304 in the tensioning assembly 300 abuts against the inner wall of the notched pipe, the cutting pin assembly 400 is driven to rotate on the spindle 100, so that the cutting assembly 400 cuts the end face of one end of the pipe, and a groove is formed on the end face of one end of the pipe.

In the embodiment of the application, when the pipeline beveling machine is required to cut one end of a pipeline to be beveled to form a bevel, firstly, an operator can stretch the main shaft 100 in the pipeline beveling machine into the pipeline to be beveled, so that the first driving assembly 200 and the tensioning assembly 300 are located in the pipeline to be beveled along with the main shaft 100, and the cutting pin assembly 400 and the second driving assembly 500 are located outside the pipeline to be beveled; then, an operator can control the plurality of tensioning blocks 304 in the tensioning assembly 300 to simultaneously move towards the direction close to the inner wall of the pipeline to be cut by operating the first driving assembly 200; finally, an operator can control the cutting pin assembly 400 to rotate on the main shaft 100 by operating the second driving assembly 500, so as to cut one end of the pipe to be cut, and further form a groove on the end face of one end of the pipe to be cut.

It should be noted that, because the plurality of tensioning blocks 304 in the tensioning assembly 300 move towards the inner wall of the pipe to be notched simultaneously under the action of the synchronizing ring 303, the plurality of tensioning blocks 304 abut against the inner wall of the pipe to be notched simultaneously, so that after the tensioning assembly 300 is fixed on the inner wall of the pipe to be notched, the coincidence degree between the axial line of the spindle 100 sleeved by the tensioning assembly 300 and the axial line of the pipe to be notched is high. Therefore, the quality of the groove formed after the end face of one end of the pipeline to be notched is cut by the cutting assembly 400 subsequently is high, and the welding quality of the pipeline during subsequent welding is effectively improved.

To sum up, the pipeline beveling machine that this application embodiment provided includes: the device comprises a main shaft, and a first driving assembly, a tensioning assembly, a cutting assembly and a second driving assembly which are sleeved on the main shaft. When the first driving assembly and the tensioning assembly are positioned in the pipeline to be cut, the first driving assembly can drive the plurality of tensioning blocks in the tensioning assembly to move towards the direction of the inner wall of the pipeline to be cut. Because in the tensioning assembly, the plurality of tensioning blocks are clamped with the synchronizing ring, and under the action of the synchronizing ring, the plurality of tensioning blocks can simultaneously move towards the direction of the inner wall of the pipeline to be notched, therefore, the plurality of tensioning blocks can simultaneously abut against the inner wall of the pipeline, so that after the tensioning assembly is fixed on the inner wall of the pipeline to be notched, the coincidence degree of the axial lead of the spindle sleeved by the tensioning assembly and the axial lead of the pipeline to be notched is higher. So, after adopting the second drive assembly that is located the pipeline of treating the incision outside to drive cutting assembly and cut the terminal surface of this one end of treating the pipeline of incision, the quality that forms the groove on the terminal surface of this one end of treating the pipeline of incision is higher, the effectual welding quality when having improved follow-up welding to the pipeline.

Alternatively, as shown in fig. 2 and 3, fig. 2 is a schematic structural diagram of another pipeline beveling machine used in the embodiments of the present application, and fig. 3 is a side view of the pipeline beveling machine shown in fig. 2. The first driving assembly 200 in the pipe beveling machine may include: the tensioning cylinder 201 and the sealing plug body (not shown in the figure) are sleeved on the main shaft 100, the tensioning cylinder 201 can be movably connected with the main shaft 100, and the sealing plug body is located in the tensioning cylinder 201 and is fixedly connected with the main shaft 100. For example, the tensioning cylinder 201 may be a pneumatic cylinder or an oil hydraulic cylinder. The following embodiment is schematically illustrated by taking the tensioning cylinder 201 as an oil hydraulic cylinder.

In this case, the tensioning cylinder 201 has two chambers on either side of the sealing plug body. For example, the two cavities are respectively: a first cavity at one side close to the tensioning assembly 300 and a second cavity at one side far from the tensioning assembly 300. When the tensioning assembly 300 needs to be fixed in the pipeline to be notched, the first cavity is an oil inlet cavity, the second cavity is an oil outlet cavity, and the tensioning cylinder body 201 in the first driving assembly 200 moves towards the direction close to the tensioning assembly 300 under the action of the sealing plug body, so that the tensioning blocks 304 in the tensioning assembly 300 move towards the direction close to the inner wall of the pipeline to be notched, and the tensioning assembly 300 is fixed in the pipeline to be notched; when the fixed relationship between the tensioning assembly 300 and the pipeline to be notched needs to be released, the first cavity is an oil outlet cavity, the second cavity is an oil inlet cavity, and the tensioning cylinder 201 in the first driving assembly 200 moves in the direction away from the tensioning assembly 300 under the action of the sealing plug body, so that the tensioning blocks 304 in the tensioning assembly 300 move in the direction away from the inner wall of the pipeline to be notched, and the fixed relationship between the tensioning assembly 300 and the pipeline to be notched is released.

Optionally, as shown in fig. 2 and 3, the pipe beveling machine may further include: and the protective bracket 600 is connected with one side of the tensioning cylinder body 201 in the first driving assembly 200, which is far away from the tensioning assembly 300. This protective cradle 600 can overlap on one end of main shaft 100 for the protection is protected main shaft 100's one end, avoids stretching into main shaft 100 and treats the notched in-process, and the one end that appears main shaft 100 collides with the inner wall of this pipeline of treating the incision, leads to main shaft 100 to receive the phenomenon of damage. For example, the protection bracket 600 may be connected to a side of the tensioning cylinder 201 away from the tensioning assembly 300 by a bolt.

In the embodiment of the present application, as shown in fig. 2 and 3, the plurality of tensioning blocks 304 in the tensioning assembly 300 are uniformly distributed around the periphery of the spindle 100; the first guiding flange 301 of the tensioning assembly 300 can be in threaded connection with the tensioning cylinder 201 of the first driving assembly 200; the second guiding flange 302 of the tensioning assembly 300 can be fixedly connected with the main shaft 100 through bolts.

Optionally, as shown in fig. 4 and 5, fig. 4 is a schematic structural diagram of a tensioning block provided in an embodiment of the present application, and fig. 5 is a front view of the tensioning block shown in fig. 4. Each of the tension blocks 304 in the tension assembly 300 is strip-shaped, and both ends of each of the tension blocks 304 have a first inclined surface 3041. The first inclined surface 3041 of the tension block 304 is located on a side of the tension block 304 close to the synchronizing ring 303. The first guiding flange 301 and the second guiding flange 302 of the tensioning assembly 300 both have a plurality of guiding recesses (not labeled in the figures) corresponding to the plurality of tensioning blocks 304 one by one, and the bottom surface of each guiding recess is a second inclined surface matching with the first inclined surface 3041 of the corresponding tensioning block 304. The second inclined surface of the first guide flange 301 is located on one side of the first guide flange 301 close to the tension block 304, and the second inclined surface of the second guide flange 302 is located on one side of the second guide flange 302 close to the tension block 304.

In this case, the first end of each tension block 304 in the tension assembly 300 is located in the corresponding guide groove in the first guide flange 301, and the first inclined surface 3041 on the first end of the tension block 304 is matched with the bottom surface (i.e., the second inclined surface) of the corresponding guide groove, so that the first end of the tension block 304 can slide in the corresponding guide groove; similarly, the second end of each of the tensioning blocks 304 in the tensioning assembly 300 is located in the corresponding guide groove of the second guide flange 301, and the first inclined surface 3041 on the second end of the tensioning block 304 is matched with the bottom surface (i.e., the second inclined surface) of the corresponding guide groove, so that the second end of the tensioning block 304 can slide in the corresponding guide groove.

Thus, when the tensioning cylinder 201 in the first driving assembly 200 moves towards the tensioning assembly 300, the tensioning cylinder 201 drives the first guide flange 301 in the tensioning assembly 300 to move towards the second guide flange 302, and at this time, the plurality of tensioning blocks 303 move towards the direction away from the main shaft 100; when the tensioning cylinder 201 of the first driving assembly 200 moves away from the tensioning assembly 300, the tensioning cylinder 201 drives the first guide flange 301 of the tensioning assembly 300 to move away from the second guide flange 302, and at this time, the tensioning blocks 303 move towards the main shaft 100.

Optionally, as shown in fig. 4 and fig. 5, each of the tensioning blocks 304 in the tensioning assembly 300 further has at least one circular arc-shaped protrusion 3042 at both ends, and the protrusion 3042 is located at a side of the tensioning block 304 away from the synchronizing ring 303.

As an example, two circular arc-shaped protruding structures 3042 may be provided at both ends of each tensioning block 304. The tensioning block 304 may abut against the inner wall of the pipe to be notched via a raised structure 3042. Because the contact surface between the protruding structure 3042 of the tensioning block 304 and the inner wall of the pipe to be notched is arc-shaped, the protruding structure 3042 can better adhere to the inner wall of the pipe to be notched. In this way, even if the pipe to be cut has a certain ovality, the protruding structure 3042 can be abutted against the inner wall of the pipe to be cut, and the coincidence degree between the axis of the main shaft 100 and the axis of the pipe to be cut is further improved.

In the present application, when the two ends of the tension block 304 are provided with the protruding structures 3042, a recessed structure 3043 is formed on a side of the tension block 304 away from the synchronizing ring 303, and the recessed structure 3043 is located between the protruding structures 3042 at the two ends of the tension block 304. Thus, when the tightening block 304 abuts against the inner wall of the pipe to be cut, the groove structure 3043 in the tightening block 304 can avoid the inner weld seam in the pipe to be cut, and the inner weld seam in the pipe to be cut can be located between the protrusion structures 3042 at the two ends of the tightening block 304, so that the abutting firmness between the tightening block 304 and the inner wall of the pipe to be cut is effectively improved, and the coincidence degree between the axial line of the spindle 100 and the axial line of the pipe to be cut can be further improved.

In the embodiment of the present application, as shown in fig. 4 and 5, each of the tension blocks 304 in the tension assembly 300 has a snap groove 3044 on a side close to the synchronizing ring 303. The synchronizing ring 303 of the tensioning assembly 300 can be engaged with the engaging groove 3044 of each tensioning block 304. In the present application, the synchronizing ring 303 may be in clearance fit with the catching groove 3044 in each of the tension blocks 304, and each of the tension blocks 304 may be driven by the first guiding flange 301 to move in a direction away from or close to the synchronizing ring 303.

Optionally, as shown in fig. 2 and 3, the tensioning assembly 300 in the pipe beveling machine may further include: at least two annular elastic connecting elements 305. Each annular elastic connecting piece 305 is connected with a plurality of tensioning blocks 304 in a distributed way. The annular elastic connecting member 305 can ensure that the plurality of tension blocks 304 simultaneously move toward the main shaft 100 when the first guide flange 301 moves away from the second guide flange 302.

It should be noted that the present application is schematically illustrated by the tension assembly 300 including two annular elastic connecting members 305. One of the annular elastic connection members 305 is located on a side close to the first guide flange 301, and the other annular elastic connection member 305 is located on a side close to the second guide flange 302.

In the embodiment of the present application, each of the annular elastic connection members 305 may include: a plurality of spring attachments 3051 and a plurality of extension springs 3052.

The plurality of spring connectors 3051 of the annular elastic connector 305 are connected to the plurality of tension blocks 304 in a one-to-one correspondence. For example, as shown in fig. 4 and 5, each tension block 304 further has a connecting groove 3045, the connecting groove 3045 is located on a side of the tension block 304 away from the synchronizing ring 303, each spring connector 3051 can be located in the connecting groove 3045 in the corresponding tension block 304, and each spring connector 3051 can be fixedly connected with the corresponding tension block 304 through a bolt.

Each of the extension springs 3052 of the annular elastic link 305 has both ends connected to two adjacent spring links 3051, respectively. As such, the plurality of spring couplers 3051 and the plurality of extension springs 3052 may enclose: and an annular elastic connecting piece 305 connected with each tensioning block 304.

In this case, when the first guide flange 301 moves toward the second guide flange 302, the plurality of tension blocks 303 simultaneously move away from the main shaft 100 under the action of the synchronizing ring 303, and during the movement of the plurality of tension blocks 303 away from the main shaft 100, the annular elastic connection member 305 simultaneously expands outward, and each tension spring 3051 in the annular elastic connection member 305 is in a tension state; when the first guide flange 301 moves away from the second guide flange 302, each of the extension springs 3051 in the annular elastic coupling member 305 contracts simultaneously, so that the annular elastic coupling member 305 contracts uniformly and inwardly, and thus the plurality of tension blocks 303 move closer to the main shaft 100 simultaneously under the action of the annular elastic coupling member 305.

Alternatively, as shown in fig. 2 and 3, the cutting assembly 400 in the pipe beveling machine may include: a rotating disk 401 coupled to the second drive assembly 500, and a plurality of profiling cutters 402 coupled to the rotating disk 401. The rotating disc 501 can be sleeved on the spindle 100 and movably connected with the spindle 100. The second drive assembly 500 may drive the rotating disk 401 to rotate on the spindle 100 such that the plurality of profile cutters 402 on the rotating disk 401 also rotate about the spindle 100. In this manner, the end face of one end of the pipe to be notched can be cut by the plurality of rotating profile cutters 502.

In an embodiment of the present application, as shown in fig. 2 and 3, each of the profiling cutters 402 of the cutting assembly 400 may include: a blade seat 4021 movably connected to the rotating disk 401, and a profile wheel 4022 and a cutting blade 4023 connected to the blade seat 4021.

Illustratively, in each profile cutter 402, a profile wheel 4022 may be coupled to the blade seat 4021 by a support shaft 4024, and the profile wheel 4022 may be free to rotate on the support shaft 4024. The cutting blade 4023 may include: a knife bar 4023a with a first end connected with the knife holder 4021, and an insert 4023b connected with a second end of the knife bar 4023, wherein the insert 4023b can cut an end face of one end of a pipe to be cut. The support shaft 4024 has a length greater than that of the cutter bar 4023a so that when the main shaft is inserted into the pipe to be cut, the profile wheel 4022 is located inside the pipe to be cut and the cutting blade 4023 is located outside the pipe to be cut. The blade holder 4021 may be movably connected to the rotating disc 401 by a compression spring (not labeled) that is in compression when the cam 4022 is positioned within the pipe to be notched.

In this case, when the second driving assembly 500 drives the rotating disc 401 in the cutting assembly 400 to rotate, for each profile cutting member 402 in each cutting assembly 400, the tool apron 4021 in the profile cutting member 402 receives the resilience of the compression spring, and under the action of the resilience, the profile wheel 4022 in the profile cutting member 402 can be ensured to be always matched with the inner wall of the pipe to be notched, so that the cutting tool 4023 in the profile cutting member 402 can perform profile cutting on the end face of one end of the pipe to be notched, and the quality of a subsequent groove formed on the end face of one end of the pipe to be notched is further improved.

Alternatively, as shown in fig. 2, the second driving assembly 500 in the pipe beveling machine may include: the hydraulic drive system comprises a transmission case 501 sleeved on the spindle 100 and slidably connected with the spindle 100, a transmission mechanism (not shown in the figure) located in the transmission case 501, and a plurality of hydraulic motors 502 located outside the transmission case 501 and connected with the transmission case 501. The drive mechanism within the drive housing 501 may be coupled to each hydraulic motor 502 and the rotating disk 401 in the cutting assembly 400, respectively. The hydraulic motor 502 can rotate the rotary plate 401 by a transmission mechanism.

In this embodiment, as shown in fig. 2, the pipe beveling machine may further include: and a third driving assembly 700 connected to an end of the second driving assembly 500 away from the main shaft 100. The third drive assembly 700 is configured to: when the second driving assembly 500 drives the cutting assembly 400 to rotate on the main shaft 100, the second driving assembly 500 is driven to move towards the direction close to one end of the pipe to be cut, so that the cutting assembly 400 can cut one end of the pipe to be cut to form a groove.

Optionally, as shown in fig. 2, the pipe beveling machine may further include: a suspension housing 800 connected to the third drive assembly 700. This hangs box 800 has and hangs arm 801, when needs adopt this pipeline beveling machine to treat notched pipeline and carry out the groove preparation, can adopt hoist device to be connected with this arm 801 that hangs for this hoist device can be with the hoist and mount of pipeline beveling machine in treating the notched pipeline near.

In the present application, as shown in fig. 2, the third driving assembly 700 in the pipe beveling machine may include: a thrust plate 701, a pushing structure 702, and a plurality of thrust rods 703. Wherein the plurality of thrust rods 703 of the third drive assembly 700 are each passed through the suspension housing 800.

A first end of each thrust rod 703 in the third drive assembly 700 may be fixedly connected to an end of the second drive assembly 500 remote from the main shaft 100. Illustratively, a first end of each thrust rod 703 may be fixedly connected to a side of the transmission case 501 of the second drive assembly 500 away from the main shaft 100. For example, a first end of each thrust rod 703 has an external thread, a side of the transmission case 501 away from the main shaft 100 has a plurality of threaded holes corresponding to the plurality of thrust rods 703 one to one, and the first end of each thrust rod 703 can be in threaded connection with the corresponding threaded hole in the transmission case 501.

A second end of each thrust rod 703 in the third drive assembly 700 may be fixedly coupled to the thrust plate 701. For example, the second end of each thrust rod 703 also has an external thread, the thrust plate 701 has a plurality of first through holes corresponding to the plurality of thrust rods 703 one to one, and the third driving assembly 700 may further include: a plurality of first nuts 704 corresponding to the plurality of thrust rods 703 one to one. The second end of each thrust rod 703 passes through a corresponding first through hole in the thrust plate 701 and then is in threaded connection with a corresponding first nut 704, and the first nut 704 is located on the side of the thrust plate 701 away from the thrust rod 703. In this way, the first nut 704 is screwed to the thrust rod 703, whereby the thrust rod 703 and the thrust plate 701 can be fixedly connected to each other.

The pushing structure 702 of the third driving assembly 700 is fixedly connected to the suspension housing 800 and the thrust plate 701, respectively. The pushing structure 702 is configured to: the thrust plate 701 is driven to move toward or away from the suspension housing 800. For example, when the pushing structure 702 drives the thrust plate 701 to move in a direction close to the suspension box 800, the thrust plate 701 may drive the plurality of thrust rods 703 to move in a direction close to the spindle 100, so that the plurality of thrust rods 703 may drive the second driving assembly 500 and the cutting assembly 400 to move in a direction away from the suspension box 800; similarly, when the pushing structure 702 drives the thrust plate 701 to move in a direction away from the suspension box 800, the thrust plate 701 may drive the plurality of thrust rods 703 to move in a direction away from the main shaft 100, so that the plurality of thrust rods 703 may drive the second driving assembly 500 and the cutting assembly 400 to move in a direction close to the suspension box 800.

As an example, the pushing structure 702 in the third driving assembly 700 may include: a pushing cylinder 7021 and a telescopic rod 7022 movably connected with the pushing cylinder 7021. One end of the telescopic rod 7022 is located inside the pushing cylinder 7021, and the other end is located outside the pushing cylinder 7021. It should be noted that the pushing cylinder 7021 may be a pneumatic cylinder or an oil hydraulic cylinder. The following embodiments are schematically described by taking the pushing cylinder 7021 as an oil hydraulic cylinder.

In this application, the pushing cylinder 7021 may be fixedly connected to a side of the suspension box 800 away from the second driving assembly 500, and an end of the telescopic rod 7022 located outside the pushing cylinder 7021 may be fixedly connected to the thrust plate 701. For example, one end of the extension bar 7022 located outside the pushing cylinder 7021 has an external thread, the thrust plate 701 further has a second through hole, and the pushing structure 702 may further include: a second nut 7023. One end of the telescopic rod 7022, which is located outside the pushing cylinder 7021, can pass through the second through hole and then be in threaded connection with the second nut 7023, and the second nut 7023 is located on one side of the thrust plate 701, which is far away from the thrust rod 703. In this way, the second nut 7023 is screwed to the telescopic rod 7022, so that the telescopic rod 7022 and the thrust plate 701 can be fixedly connected to each other.

In this case, when the third driving assembly 700 is required to drive the second driving assembly 500 to move towards the direction close to the end of the pipe to be cut, so that the cutting assembly 400 can cut at the end of the pipe to be cut to form the groove, the pushing structure 702 in the third driving assembly 700 is required to drive the thrust plate 701 to move towards the direction close to the hanging box 800, and the telescopic rod 7022 in the pushing structure 702 is required to move towards the pushing cylinder 7021. At this time, the rod chamber in the pushing cylinder 7021 is an oil inlet chamber, and the rodless chamber in the pushing cylinder 7021 is an oil outlet chamber. Thus, the pushing cylinder 7021 needs less oil when operating, so that the cutting assembly 400 has higher stability when moving in the direction of the pipe to be cut. The speed of the cutting assembly 400 moving towards the direction of the pipe to be cut is controlled to be 3-6 mm per minute, so that the processing requirement of the groove is met.

With reference to the above embodiments, the following embodiments schematically illustrate the process of performing groove machining on a pipe to be cut by using the pipe beveling machine provided by the embodiments of the present application:

firstly, an operator can connect the hoisting device with the suspension box 800 in the pipeline beveling machine, so that the hoisting device can hoist the pipeline beveling machine in the vicinity of the pipeline to be notched.

Meanwhile, an operator can extend the main shaft 100 in the pipe beveling machine into the pipe to be cut, and ensure that the copying wheel 4022 in the first driving assembly 200, the tensioning assembly 300 and the cutting assembly 400 is positioned in the pipe to be cut, and the cutting blade 4023 in the cutting pin assembly 400 and the second driving assembly 500 are positioned outside the pipe to be cut. And the distance between the cutting blade 4023 in the cutting pin assembly 400 and the end surface of one end of the pipe to be cut is secured in the range of 3 to 5 mm.

Then, an operator can operate the first driving assembly 200 to move the tensioning cylinder 201 in the first driving assembly 200 to a direction close to the tensioning assembly 300, so as to drive the first guide flange 301 in the tensioning assembly 300 to move to a direction close to the second guide flange 302, so that the plurality of tensioning blocks 304 simultaneously move to a direction close to the inner wall of the pipeline to be cut under the action of the synchronizing ring 303, and fix the tensioning assembly 300 on the inner wall of the pipeline to be cut, and can ensure that the coincidence degree of the axial line of the spindle 100 and the axial line of the pipeline to be cut is high.

Finally, an operator can drive the rotating disc 401 in the cutting pin assembly 400 to rotate on the main shaft 100 by controlling the second driving assembly 300, and meanwhile, the operator can drive the cutting assembly 400 to move towards one end of the pipe to be cut by controlling the third driving assembly 700, so that the rotating cutting knife 4023 in the cutting assembly 400 can cut one end of the pipe to be cut, and a groove is formed on the end face of one end of the pipe to be cut.

It should be noted that, the machining error of the blunt edge and the flatness of the groove formed by performing groove machining on the pipeline to be notched in the above manner is within ± 0.2 mm, and the quality of the groove formed on the end face of one end of the pipeline to be notched is high.

To sum up, the pipeline beveling machine that this application embodiment provided includes: the device comprises a main shaft, and a first driving assembly, a tensioning assembly, a cutting assembly and a second driving assembly which are sleeved on the main shaft. When the first driving assembly and the tensioning assembly are positioned in the pipeline to be cut, the first driving assembly can drive the plurality of tensioning blocks in the tensioning assembly to move towards the direction of the inner wall of the pipeline to be cut. Because in the tensioning assembly, the plurality of tensioning blocks are clamped with the synchronizing ring, and under the action of the synchronizing ring, the plurality of tensioning blocks can simultaneously move towards the direction of the inner wall of the pipeline to be notched, therefore, the plurality of tensioning blocks can simultaneously abut against the inner wall of the pipeline, so that after the tensioning assembly is fixed on the inner wall of the pipeline to be notched, the coincidence degree of the axial lead of the spindle sleeved by the tensioning assembly and the axial lead of the pipeline to be notched is higher. So, after adopting the second drive assembly that is located the pipeline of treating the incision outside to drive cutting assembly and cut the terminal surface of this one end of treating the pipeline of incision, the quality that forms the groove on the terminal surface of this one end of treating the pipeline of incision is higher, the effectual welding quality when having improved follow-up welding to the pipeline.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is intended to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.

Claims (10)

1. A pipe beveling machine, comprising:

the device comprises a main shaft, a first driving assembly, a tensioning assembly, a cutting assembly and a second driving assembly, wherein the first driving assembly, the tensioning assembly, the cutting assembly and the second driving assembly are sleeved on the main shaft;

the tight subassembly that rises includes: the first guide flange is fixedly connected with the first driving assembly, the second guide flange is fixedly connected with the main shaft, the synchronizing ring is slidably connected with the main shaft, the plurality of tensioning blocks are distributed around the main shaft and are all positioned between the first guide flange and the plurality of second guide flanges, and each tensioning block is movably connected with the first guide flange and the second guide flange respectively and is clamped with the synchronizing ring;

the first drive assembly is configured to: when the main shaft extends into a pipeline to be cut, the main shaft moves towards the direction close to the tensioning assembly so as to drive the plurality of tensioning blocks to move towards the direction close to the inner wall of the pipeline simultaneously, and each tensioning block is enabled to be abutted against the inner wall of the pipeline;

the cutting pin assembly is positioned on one side of the tensioning assembly, which is far away from the first driving assembly, and the cutting assembly is movably connected with the main shaft;

the second driving assembly is connected with one side of the cutting pin assembly, which is far away from the tensioning assembly, and the second driving assembly is configured to: after each tensioning block in the tensioning assembly is abutted to the inner wall of the pipeline, the cutting pin assembly is driven to rotate on the main shaft, so that the cutting pin assembly cuts the end face of one end of the pipeline.

2. The pipe beveling machine of claim 1,

each tensioning block is strip-shaped, two ends of each tensioning block are provided with first inclined planes, and the first inclined planes are positioned on one sides, close to the synchronizing rings, of the tensioning blocks;

the first guide flange and the second guide flange are respectively provided with a plurality of guide grooves corresponding to the plurality of tensioning blocks one to one, and the bottom surface of each guide groove is a second inclined surface matched with the first inclined surface of the corresponding tensioning block.

3. The pipe beveling machine of claim 2,

each two ends of each tensioning block are provided with at least one arc-shaped protruding structure, and the protruding structures are located on one side, far away from the synchronizing ring, of each tensioning block.

4. The pipe beveling machine of claim 1,

each tensioning block is close to one side of the synchronizing ring is provided with a clamping groove, and the synchronizing ring is clamped with each clamping groove in the tensioning block.

5. The pipe beveling machine of claim 1,

the tensioning assembly further comprises: and each annular elastic connecting piece is respectively connected with the plurality of tensioning blocks.

6. The pipe beveling machine of claim 5,

each of the annular elastic connecting members includes: the tension device comprises a plurality of spring connecting pieces and a plurality of tension springs, wherein the spring connecting pieces are connected with the tension blocks in a one-to-one correspondence mode, and two ends of each tension spring are respectively connected with two adjacent spring connecting pieces.

7. The pipe beveling machine of any one of claims 1 to 6,

the pipe beveling machine further comprises: a third drive assembly connected to a side of the second drive assembly remote from the spindle, the third drive assembly configured to: when the second driving component drives the cutting pin component to rotate on the main shaft, the second driving component is driven to move towards the direction close to one end of the pipeline.

8. The pipe beveling machine of claim 7,

the pipe beveling machine further comprises: the suspension box body is connected with the third driving assembly;

the third drive assembly includes: a thrust plate, a thrust structure and a plurality of thrust rods;

the plurality of thrust rods penetrate through the suspension box body, a first end of each thrust rod is fixedly connected with one side, far away from the main shaft, of the second driving assembly, a second end of each thrust rod is fixedly connected with the thrust plate, the pushing structure is respectively fixedly connected with the suspension box body and the thrust plate, and the pushing structure is configured to: the thrust plate is driven to move towards the direction close to or far away from the suspension box body.

9. The pipe beveling machine of claim 8,

the pushing structure includes: a pushing cylinder body and a telescopic rod movably connected with the pushing cylinder body, wherein one end of the telescopic rod is positioned outside the pushing cylinder body, the other end of the telescopic rod is positioned in the pushing cylinder body,

the pushing cylinder body is fixedly connected with one side, far away from the second driving assembly, of the hanging box body, and one end, located outside the pushing cylinder body, of the telescopic rod is fixedly connected with the thrust plate.

10. The pipe beveling machine of any one of claims 1 to 6,

the cutting assembly includes: a rotating disk coupled to the second drive assembly, and a plurality of profiling cutters coupled to the rotating disk;

each of the contour cutters includes: a cutter seat movably connected with the rotating disc, and a profiling wheel and a cutting knife connected with the cutter seat.

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