Pipe piece splicing device and machining method for spliced pipe pieces

Abstract

The invention discloses a duct piece splicing device and a machining method for splicing duct pieces. The duct piece splicing device comprises a duct piece mounting head component, and the duct piece mounting head component comprises a main shaft, a first supporting and jacking mechanism and a second supporting and jacking mechanism; the first supporting and jacking mechanism and the second supporting and jacking mechanism are arranged on the main shaft and can do telescopic motion in the direction away from the axis of the main shaft, and pipe pieces detachably arranged on the first supporting and jacking mechanism and the second supporting and jacking mechanism can be stably supported and jacked to the inner wall of a pipeline of a pipeline workpiece. According to the machining method for assembling the duct piece, the duct piece assembling device is used for machining the duct piece workpiece, the automation degree can be improved when the duct piece is attached to the inner wall of the pipeline workpiece, the process and the result are accurate and efficient, and the cost of manpower and material resources is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of component and material assembly processing, and in particular to a pipe segment assembling device and a processing method for assembling pipe segments. Background Art

[0002] As machining becomes increasingly advanced and efficient, the devices, assembly methods, and processes for the automated assembly of multiple separate components or parts in special-shaped workpieces are also gradually being iterated and updated. For those process links or entire processing methods that require segment patching on the inner wall of a pipeline workpiece, the traditional segment splicing method usually cannot complete the assembly of the entire annular segment on the outside, but needs to be positioned and spliced ​​into annular segments one by one inside the pipeline. Therefore, a special support structure needs to be set up for each spliced ​​segment, so this method is not only inefficient, but also has many challenges in terms of quality and safety, resulting in increased operational complexity and limiting the accuracy and efficiency of subsequent segment splicing and fixation.

[0003] In the prior art, the utility model with announcement number CN221442594U discloses a technical solution for a shield segment splicing device, which realizes the rapid connection and disassembly of shield segments through hydraulic drive, and has the advantages of simple structure and convenient operation. However, the device is suitable for a larger working space. For a small inlet and large diameter pipeline, the hydraulic drive mode causes the device to be too large, and its applicability is limited in narrow environments such as the inner cavity of the closed pipeline, which increases the complexity and maintenance cost of the system and reduces the operational flexibility.

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention proposes a segment splicing device and a processing method for assembling segments. The device can pre-assemble multiple segments outside the pipeline to form a segment whose outer contour can be contracted into a nearly annular structure, which is fed through the entrance of the pipeline and automatically unfolded into a complete circular segment inside the pipeline, thereby improving work efficiency, ensuring splicing quality, and ensuring smooth construction links, as well as the safety of workpieces and personnel. In addition, the device is also designed with a stable and precise top support, which provides sufficient support force when supporting the segment, improves efficiency and installation accuracy, reduces installation difficulty, and solves the problem of low automation in traditional methods. Summary of the invention

[0005] The purpose of the present application is to provide a pipe segment assembly device and a processing method for assembling pipe segments, which can improve the degree of automation in assembling and fixing pipe segments in the inner cavity of a pipeline workpiece, improve efficiency, and after the pipe segments are accurately connected and positioned on the device, assemble multiple pipe segments at one time, thereby ensuring efficiency and installation accuracy, reducing unnecessary cost consumption, and enabling the pipe segment assembly process to proceed smoothly.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a pipe segment assembly device, characterized in that the pipe segment assembly device includes a pipe segment installation head component, and the pipe segment installation head component includes a main shaft, a first supporting mechanism and a second supporting mechanism; the first supporting mechanism and the second supporting mechanism are installed on the main shaft, and can be telescopically moved in the direction away from the axis of the main shaft, and can firmly support the pipe segment detachably installed on the first supporting mechanism and the second supporting mechanism to the inner wall of the pipe workpiece.

[0007] Optionally, the first supporting mechanism is provided with a first supporting head and a second supporting head, and the second supporting mechanism is provided with a third supporting head and a fourth supporting head; the first supporting head, the second supporting head, the third supporting head and the fourth supporting head are respectively provided with more than one connecting point of each pipe segment, and at least one separate pipe segment can be detachably connected to the connecting point of each pipe segment.

[0008] Optionally, the first supporting head is provided with two pipe segment connection points, which are respectively connected to pipe segment one and pipe segment two, and the second supporting head is also provided with two pipe segment connection points, which are respectively connected to pipe segment three and pipe segment four; the pipe segment connection point of the third supporting head is connected to pipe segment five, and the pipe segment connection point of the fourth supporting head is connected to pipe segment six.

[0009] Optionally, the segment installation head component also includes a first ring, a first telescopic rod and a second telescopic rod; the main shaft is inserted into the first ring, and the first ring is provided with a first hinge seat; one end of the first telescopic rod is installed on the main shaft, and the other end is connected to the first supporting head, and a fifth hinge seat is installed between the connecting positions of the two ends of the first telescopic rod; one end of the second telescopic rod is installed on the main shaft, and the other end is connected to the first supporting head, and a sixth hinge seat is installed between the connecting positions of the two ends of the second telescopic rod; the segment installation head component also includes a first hinge rod, a second hinge rod, a side hinge rod group one and a side hinge rod group two, one end of the first hinge rod is hinged to the first One of the hinge points of an articulated seat, and the other end is hinged to a hinge point of the fifth articulated seat; one end of the second articulated rod is hinged to another hinge point of the first articulated seat, and the other end is hinged to a hinge point of the sixth articulated seat; one end of each of the two articulated rods in the side articulated rod group one is hinged to the other two hinge points in the fifth articulated seat, and the other end of each of the two articulated rods in the side articulated rod group one is connected to pipe segment one and pipe segment two respectively; one end of each of the two articulated rods in the side articulated rod group two is hinged to the other two hinge points in the sixth articulated seat, and the other end of each of the two articulated rods in the side articulated rod group two is connected to pipe segment three and pipe segment four respectively.

[0010] Optionally, the segment mounting head component further comprises a second sleeve ring, a third sleeve ring, a main shaft base, a first hinge rod group and a second hinge rod group, and the main shaft is inserted into the second sleeve ring and the third sleeve ring; The second collar is provided with a second hinge seat, the third collar is provided with a third hinge seat, the main shaft base is provided with a fourth hinge seat, one end of the three hinge rods in the hinge rod group one is hinged to one of the hinge points of the second hinge seat, the third hinge seat and the fourth hinge seat respectively, the other ends of the three hinge rods in the hinge rod group one are hinged to the three hinge points on the third support head in sequence, one end of the three hinge rods in the hinge rod group two is hinged to the other hinge point of the second hinge seat, the third hinge seat and the fourth hinge seat respectively, the other ends of the three hinge rods in the hinge rod group two are hinged to the three hinge points on the fourth support head in sequence.

[0011] The first telescopic rod and the second telescopic rod are installed between the main shaft base and the third ring at the position of the main shaft, the third ring is installed between the installation position of the first telescopic rod and the second telescopic rod and the second ring, and the second ring is installed between the first ring and the third ring.

[0012] Optionally, a transmission component is provided in the main shaft (31), which can drive the first ring (32), the second ring (33) and the third ring (34) to reciprocate on the main shaft (31).

[0013] Optionally, the transmission component is a screw rod, a graded oil cylinder, a graded electric cylinder or an electric motor.

[0014] The present invention further discloses a method for processing an assembled pipe segment, and its technical solution is to use the pipe segment assembly device to process the pipe segment as a workpiece, and the processing method includes the following steps: Step 1): fix the pipeline workpiece, and connect the pipe segment to the connection points on the first supporting mechanism and the second supporting mechanism, which are respectively connected to the pipe segment as the workpiece; Step 2): adjusting the transmission member of the main shaft so that the first supporting mechanism and the second supporting mechanism are retracted toward the axis of the main shaft, so that the outer edge contours of all the connected segments can move along the axial direction of the main shaft and enter the inner cavity space of the pipeline workpiece; Step 3): centering and positioning the pre-installed segments and the segment installation head components, so that the segment installation head components connected with the segments enter a preset working position, adjusting the transmission components of the spindle, so that the first and second support mechanisms perform a support action in a direction away from the axis of the spindle, and the segments are stretched out, and the transmission components are further adjusted so that the two edges of the segments along the axis of the spindle abut against the adjacent segments, and the segments abut against the pipeline workpiece on the surface of the inner wall of the pipeline workpiece; Step 4): Fix the pipe segment to the inner wall of the pipe workpiece, adjust the transmission component of the main shaft to shrink the first supporting mechanism and the second supporting mechanism toward the axis of the main shaft, and then withdraw and reset the pipe segment installation head component from the inner cavity of the pipe workpiece.

[0015] Optionally, the pipe segment 1 in the step 1) is also connected to one end of an articulated rod in the side articulated rod group 1, and the pipe segment 2 is also connected to one end of another articulated rod in the side articulated rod group 1; the pipe segment 3 is also connected to one end of an articulated rod in the side articulated rod group 2, and the pipe segment 4 is also connected to one end of another articulated rod in the side articulated rod group 2; in the step 4), the pipe segment is fixed to the inner wall of the pipeline workpiece by gluing, welding, or drilling holes in the pipe segment and the pipeline workpiece and using pins to connect them.

[0016] A pipe segment assembly device and a processing method for assembling pipe segments provided in the present application can achieve the following technical effects in the processing of the working process of fixing the pipe segment workpiece on the inner wall of the pipeline workpiece, which can improve the mechanical level of processing, reduce the inaccuracy caused by too many steps of manual operation by personnel, reduce working hours and manpower investment, and make the positioning of installed pipe segments more accurate and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of a pipe segment assembly device provided by an embodiment of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of a segment installation head component provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of the assembled three-dimensional structure of a segment mounting head component provided by an embodiment of the present invention; Figure 4It is a schematic diagram of a processing step of connecting a pipe segment to a pipe segment mounting head component and placing it into a pipeline workpiece in a processing method for assembling pipe segments provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of a processing step in which a pipe segment of a processing method for assembling pipe segments provided by an embodiment of the present invention is connected to a pipe segment mounting head component and a first supporting mechanism supports the connected pipe segment to the inner wall of a pipeline workpiece; Figure 6 It is a schematic diagram of a processing step of connecting a pipe segment to a pipe segment mounting head component and using a first supporting mechanism and a second supporting mechanism to support the connected pipe segment to the inner wall of a pipeline workpiece in a processing method for assembling pipe segments provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of a processing flow of a step of connecting a pipe segment to a pipe segment mounting head component to a step of supporting the pipe segment to the inner wall of a pipeline workpiece in a processing method for assembling pipe segments provided by an embodiment of the present invention; Reference numerals: 1, pipe workpiece; 2, pipe segment; 21, pipe segment one; 22, pipe segment two; 23, pipe segment three; 24, pipe segment four; 25, pipe segment five; 26, pipe segment six; 3, pipe segment mounting head component; 31, main shaft; 32. First sleeve; 321. First hinged seat; 33. Second sleeve; 331. Second hinged seat; 34. Third sleeve; 341. Third hinged seat; 35. Spindle base; 351. Fourth hinged seat; 36. First support mechanism; 361. Support head one; 362. Support head two; 363. First telescopic rod; 364. Second telescopic rod; 365. Fifth hinged seat; 366. Sixth hinged seat; 367. First hinged rod; 368. Second hinged rod; 37. Second support mechanism; 371. Third support head; 372. Fourth support head; 373. Articulated rod group one; 374. Articulated rod group two; 375. Side articulated rod group one; 376. Side articulated rod group two. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the present invention, unless otherwise clearly stipulated and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] In order to illustrate the technical solution of the present application, the following is described through specific embodiments: According to one embodiment, combined Figure 1 , Figure 2 and Figure 3 As shown, the present application provides a pipe segment assembly device in this embodiment, characterized in that the pipe segment assembly device includes a pipe segment installation head component 3, and the pipe segment installation head component 3 includes a main shaft 31, a first supporting mechanism 36 and a second supporting mechanism 37; the first supporting mechanism 36 and the second supporting mechanism 37 are installed on the main shaft 31, and can telescopically move in the direction away from the axis of the main shaft 31, and can firmly support the pipe segment 2 detachably installed on the first supporting mechanism 36 and the second supporting mechanism 37 to the inner wall of the pipe workpiece 1. Here, each pipe segment of the component of the pipe segment 2 is not specifically limited, and is determined according to the pipe segments to be assembled for processing. The setting method of the pipe segment 2 connection point on the pipe segment installation head component 3 and whether to connect the corresponding pipe segment can be determined according to the purpose of processing.

[0022] exist Figure 2 and Figure 3 The present application also provides a pipe segment assembly device, wherein the first supporting mechanism 36 is provided with a first supporting head 361 and a second supporting head 362, and the second supporting mechanism 37 is provided with a third supporting head 371 and a fourth supporting head 372; the first supporting head 361, the second supporting head 362, the third supporting head 371 and the fourth supporting head 372 are respectively provided with more than one connection point of the pipe segment 2, and at least one separate pipe segment 2 can be detachably connected to the connection point of each pipe segment 2.

[0023] According to another embodiment, the present application also provides a pipe segment assembly device, wherein the first supporting head 361 is provided with two connecting points of pipe segments 2, which are respectively connected to pipe segment one 21 and pipe segment two 22, and the second supporting head 362 is also provided with two connecting points of pipe segments 2, which are respectively connected to pipe segment three 23 and pipe segment four 24; the pipe segment 2 connection point of the third supporting head 371 is connected to pipe segment five 25, and the pipe segment 2 connection point of the fourth supporting head 372 is connected to pipe segment six 26.

[0024] According to another embodiment, the present application also provides a segment assembly device, still in combination with Figures 1 to 3 The content of the pipe segment installation head component 3 also includes a first ring 32, a first telescopic rod 363 and a second telescopic rod 364; the main shaft 31 is inserted into the first ring 32, and the first ring 32 is provided with a first hinge seat 321; one end of the first telescopic rod 363 is installed on the main shaft 31, and the other end is connected to the first support head 361, and a fifth hinge seat 365 is installed between the connection positions at both ends of the first telescopic rod 363; one end of the second telescopic rod 364 is installed on the main shaft 31, and the other end is connected to the first support head 362, and a sixth hinge seat 366 is installed between the connection positions at both ends of the second telescopic rod 364; the pipe segment installation head component 3 also includes a first hinge rod 367, a second hinge rod 368, a side hinge rod group 1 375 and a side hinge rod group 2 376, the first hinge One end of the rod 367 is hinged to one of the hinge points of the first hinge seat 321, and the other end is hinged to a hinge point of the fifth hinge seat 365; one end of the second hinge rod 368 is hinged to another hinge point of the first hinge seat 321, and the other end is hinged to a hinge point of the sixth hinge seat 366; one end of the two hinged rods in the side hinged rod group 1 375 are respectively hinged to the other two hinge points in the fifth hinge seat 365, and the other ends of the two hinged rods in the side hinged rod group 1 375 are respectively connected to pipe segment 1 21 and pipe segment 2 22; one end of the two hinged rods in the side hinged rod group 2 376 are respectively hinged to the other two hinge points in the sixth hinge seat 366, and the other ends of the two hinged rods in the side hinged rod group 2 376 are respectively connected to pipe segment 3 23 and pipe segment 4 24.

[0025] According to another embodiment, the segment mounting head component 3 further includes a second collar 33, a third collar 34, a spindle base 35, an articulated rod group 1 373 and an articulated rod group 2 374, the spindle 31 is inserted into the second collar 33 and the third collar 34; the second collar 33 is provided with a second articulated seat 331, the third collar 34 is provided with a third articulated seat 341, the spindle base 35 is provided with a fourth articulated seat 351, and one end of the three articulated rods in the articulated rod group 1 373 is respectively articulated to the second articulated seat 331, the third articulated seat 341, and the spindle base 35 is provided with a fourth articulated seat 351. The hinged seat 341 and one of the hinge points of the fourth hinged seat 351, the other ends of the three hinged rods in the hinged rod group 1 373 are hinged to the three hinge points on the third support head 371 in sequence, one ends of the three hinged rods in the hinged rod group 2 374 are hinged to another hinge point of the second hinged seat 331, the third hinged seat 341 and the fourth hinged seat 351, and the other ends of the three hinged rods in the hinged rod group 2 374 are hinged to the three hinge points on the fourth support head 372 in sequence.

[0026] According to another embodiment, the present application further provides a segment assembly device, wherein the first telescopic rod 363 and the second telescopic rod 364 are installed between the spindle base 35 and the third sleeve ring 34 at the position of the spindle 31, the third sleeve ring 34 is installed between the installation position of the first telescopic rod 363 and the second telescopic rod 364 and the second sleeve ring 33, and the second sleeve ring 33 is installed between the first sleeve ring 32 and the third sleeve ring 34. This method can ensure that the components of the first top supporting mechanism 36 and the second top supporting mechanism 37 do not interfere with each other during operation.

[0027] According to another embodiment, the present application further provides a segment assembly device, wherein a transmission component is provided in the main shaft 31 , which can drive the first ring 32 , the second ring 33 and the third ring 34 to reciprocate on the main shaft 31 .

[0028] according to Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the present application also provides a processing method for assembling pipe segments, which requires the use of a pipe segment assembling device, step 1): fix the pipeline workpiece 1, connect the pipe segment 2 to the connection points on the first supporting mechanism 36 and the second supporting mechanism 37 that are respectively connected to the pipe segment 2 as the workpiece; specifically, it can be that pipe segment one 21 and pipe segment two 22 are connected to the respective connection points on the first supporting head 361, pipe segment three 23 and pipe segment four 24 are connected to the respective connection points on the second supporting head 362, pipe segment five 25 is connected to the connection point of the third supporting head 371, and pipe segment six 26 is connected to the connection point of the fourth supporting head 371.

[0029] Step 2): adjusting the transmission member of the main shaft 31 so that the first supporting mechanism 36 and the second supporting mechanism 37 are retracted toward the axis of the main shaft 31, so that the outer edge contours of all the connected segments 2 can move along the axial direction of the main shaft 31 and enter the inner cavity space of the pipeline workpiece 1; Step 3): align and position the pre-installed segment 2 and the segment installation head component 3, so that the segment installation head component 3 connected with the segment 2 enters a preset working position, adjust the transmission component of the main shaft 31, so that the first support mechanism 36 and the second support mechanism 37 perform a support action in a direction away from the axis of the main shaft 31, and stretch the segment 2, continue to adjust the transmission component so that the two edges of each segment 2 along the axis of the main shaft 31 abut against the adjacent segments 2, and make the segment 2 abut against the surface of the inner wall of the pipeline workpiece 1; specifically, in order to ensure the precision and accuracy of the processing, it can be that the pre-installed segment 2 and the segment installation head component 3 are centered and positioned, so that the segment installation head component 3 connected with the segment 2 enters a preset working position, and the transmission component of the main shaft 31 is adjusted so that the first support mechanism 36 and the second support mechanism 37 perform a support action in a direction away from the axis of the main shaft 31, and stretch the segment 2, and continue to adjust the transmission component so that the two edges of each segment 2 along the axis of the main shaft 31 abut against the adjacent segments 2, and make the segment 2 abut against the pipeline workpiece 1 against the surface of the inner wall of the pipeline workpiece 1; specifically, in order to ensure the precision and accuracy of the processing, it can be that Centering and positioning, so that the segment installation head component 3 connected with the segment 2 enters the preset working position, and the transmission component of the main shaft 31 is adjusted, so that the first supporting mechanism 36 and the second supporting mechanism 37 realize the supporting action in the direction away from the axis of the main shaft 31, and the segment 1 21, the segment 22, the segment 3 23 and the segment 4 24 connected to the first supporting head 361 and the second supporting head 362 are stretched out, and the transmission component is continuously adjusted so that the two sides of the segments 1 21, the segment 2 22, the segment 3 23, the segment 4 24, the segment 5 25 and the segment 6 26 along the axis of the main shaft 31 are respectively abutted against the adjacent segments 2, and the surface of the segments 2 facing the inner wall of the pipeline workpiece 1 is abutted against the pipeline workpiece 1; Step 4): Fix the pipe segment 2 to the inner wall of the pipe workpiece 1, adjust the transmission component of the main shaft 31, shrink the first supporting mechanism 36 and the second supporting mechanism 37 toward the axis of the main shaft 31, and then withdraw the pipe segment mounting head component 3 from the inner cavity of the pipe workpiece 1 and reset it. Figure 7 The process sequence of the entire processing method can be seen.

[0030] According to another embodiment, the present application also provides a processing method for assembling pipe segments, wherein the pipe segment 1 21 in the step 1) is also connected to one end of one of the hinged rods in the side hinged rod group 1 375, and the pipe segment 2 22 is also connected to one end of another hinged rod in the side hinged rod group 1 375; the pipe segment 3 23 is also connected to one end of one of the hinged rods in the side hinged rod group 2 376, and the pipe segment 4 24 is also connected to one end of another hinged rod in the side hinged rod group 2 376; in the step 4), the pipe segment 2 is fixed to the inner wall of the pipeline workpiece 1 by gluing, welding, or drilling holes in the pipe segment 2 and the pipeline workpiece 1 and using pins to connect them.

[0031] Therefore, in the technical solution of the invention disclosed in the present application, the segment installation head component and its components of the mechanism arrangement of the segment assembly device are reasonably structured, easy to operate and maintain, and the segment assembly processing method and the segment workpiece installation are also easy to operate. After simple centering and positioning, the segment assembly process with a high level of automation can be carried out, thereby improving efficiency and precision and reducing processing costs.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A segment assembly device, characterized in that: The segment assembly device comprises a segment installation head component (3), wherein the segment installation head component (3) comprises a main shaft (31), a first supporting mechanism (36) and a second supporting mechanism (37); The first supporting mechanism (36) and the second supporting mechanism (37) are mounted on the main shaft (31) and are capable of telescopic movement in a direction away from the axis of the main shaft (31), and are capable of firmly supporting the pipe segment (2) detachably mounted on the first supporting mechanism (36) and the second supporting mechanism (37) to the inner wall of the pipe workpiece (1).

2. A segment assembly device according to claim 1, characterized in that: The first supporting mechanism (36) is provided with a first supporting head (361) and a second supporting head (362), and the second supporting mechanism (37) is provided with a third supporting head (371) and a fourth supporting head (372); The first supporting head (361), the second supporting head (362), the third supporting head (371) and the fourth supporting head (372) are respectively provided with more than one connection point of the pipe segment (2), and at least one separate pipe segment (2) can be detachably connected to the connection point of each pipe segment (2).

3. A segment assembly device according to claim 2, characterized in that: The first supporting head (361) is provided with connection points of the two pipe segments (2), respectively connecting pipe segment one (21) and pipe segment two (22); the second supporting head (362) is also provided with two connection points of the pipe segments (2), respectively connecting pipe segment three (23) and pipe segment four (24); The pipe segment (2) connection point of the third supporting head (371) is connected to the pipe segment five (25), and the pipe segment (2) connection point of the fourth supporting head (372) is connected to the pipe segment six (26).

4. A segment assembly device according to claim 3, characterized in that: The segment mounting head component (3) further comprises a first sleeve ring (32), a first telescopic rod (363) and a second telescopic rod (364); The main shaft (31) is inserted into a first sleeve ring (32), and a first hinge seat (321) is provided on the first sleeve ring (32); One end of the first telescopic rod (363) is mounted on the main shaft (31), and the other end is connected to the first supporting head (361), and a fifth hinge seat (365) is installed between the connecting positions of the two ends of the first telescopic rod (363); one end of the second telescopic rod (364) is mounted on the main shaft (31), and the other end is connected to the first supporting head (362), and a sixth hinge seat (366) is installed between the connecting positions of the two ends of the second telescopic rod (364); The segment mounting head component (3) further comprises a first hinge rod (367), a second hinge rod (368), a side hinge rod group 1 (375) and a side hinge rod group 2 (376), wherein one end of the first hinge rod (367) is hinged to one of the hinge points of the first hinge seat (321), and the other end is hinged to one of the hinge points of the fifth hinge seat (365); one end of the second hinge rod (368) is hinged to another hinge point of the first hinge seat (321), and the other end is hinged to one of the hinge points of the sixth hinge seat (366); One end of each of the two hinged rods in the side hinged rod group one (375) is hinged to the other two hinge points in the fifth hinged seat (365), and the other end of each of the two hinged rods in the side hinged rod group one (375) is connected to pipe segment one (21) and pipe segment two (22) respectively; one end of each of the two hinged rods in the side hinged rod group two (376) is hinged to the other two hinge points in the sixth hinged seat (366), and the other end of each of the two hinged rods in the side hinged rod group two (376) is connected to pipe segment three (23) and pipe segment four (24) respectively.

5. A segment assembly device according to claim 4, characterized in that: The segment mounting head component (3) further comprises a second sleeve ring (33), a third sleeve ring (34), a main shaft base (35), a first hinge rod group (373) and a second hinge rod group (374), wherein the main shaft (31) is inserted into the second sleeve ring (33) and the third sleeve ring (34); The second collar (33) is provided with a second hinge seat (331), the third collar (34) is provided with a third hinge seat (341), the spindle base (35) is provided with a fourth hinge seat (351), one end of the three hinge rods in the hinge rod group (373) is respectively hinged to one of the hinge points of the second hinge seat (331), the third hinge seat (341) and the fourth hinge seat (351), and the three hinge rods in the hinge rod group (373) are respectively hinged to one of the hinge points of the second hinge seat (331), the third hinge seat (341) and the fourth hinge seat (351). The other end of the hinged rod is hinged to the three hinge points on the third supporting head (371) in sequence, one end of the three hinged rods in the second hinged rod group (374) is hinged to another hinge point of the second hinged seat (331), the third hinged seat (341) and the fourth hinged seat (351), and the other end of the three hinged rods in the second hinged rod group (374) is hinged to the three hinge points on the fourth supporting head (372) in sequence.

6. A segment assembly device according to claim 5, characterized in that: The first telescopic rod (363) and the second telescopic rod (364) are installed between the main shaft base (35) and the third ring (34) at the position of the main shaft (31); the third ring (34) is installed between the installation position of the first telescopic rod (363) and the second telescopic rod (364) and the second ring (33); the second ring (33) is installed between the first ring (32) and the third ring (34).

7. A segment assembly device according to claim 6, characterized in that: The main shaft (31) is provided with a transmission component capable of driving the first sleeve ring (32), the second sleeve ring (33) and the third sleeve ring (34) to reciprocate on the main shaft (31).

8. The segment assembly device according to claim 7, characterized in that: The transmission component is a screw rod, a graded oil cylinder, a graded electric cylinder or an electric motor.

9. A method for processing assembled pipe segments, characterized in that: The pipe segment assembling device according to any one of claims 1 to 8 is used to process a pipe segment (2) as a workpiece, and the processing method comprises the following steps: Step 1): fix the pipeline workpiece (1), and connect the pipe segment (2) to the connection points on the first supporting mechanism (36) and the second supporting mechanism (37) which are respectively connected to the pipe segment (2) as the workpiece; Step 2): adjusting the transmission component of the main shaft (31) so that the first supporting mechanism (36) and the second supporting mechanism (37) are retracted toward the axis of the main shaft (31), so that the contours of the outer edges of all the connected segments (2) can move along the axial direction of the main shaft (31) and enter the inner cavity space of the pipeline workpiece (1); Step 3): centering and positioning the pre-installed pipe segment (2) and the pipe segment installation head component (3), so that the pipe segment installation head component (3) connected with the pipe segment (2) enters a pre-set working position, adjusting the transmission component of the main shaft (31), so that the first supporting mechanism (36) and the second supporting mechanism (37) perform a supporting action in a direction away from the axis of the main shaft (31), and the pipe segment (2) is stretched out, and the transmission component is further adjusted so that the two edges of each pipe segment (2) along the axis of the main shaft (31) abut against the adjacent pipe segments (2), and the pipe segment (2) abuts against the pipe workpiece (1) on the surface of the inner wall of the pipe workpiece (1); Step 4): Fix the pipe segment (2) to the inner wall of the pipe workpiece (1), adjust the transmission component of the main shaft (31), shrink the first supporting mechanism (36) and the second supporting mechanism (37) toward the axis of the main shaft (31), and then withdraw and reset the pipe segment mounting head component (3) from the inner cavity of the pipe workpiece (1).

10. A method for processing assembled pipe segments according to claim 9, characterized in that: The tube segment 1 (21), tube segment 2 (22), tube segment 3 (23) and tube segment 4 (24) in step 1) have other connection points and are also respectively connected to components on the tube segment mounting head component (3), so that the tube segment 1 (21), tube segment 2 (22), tube segment 3 (23) and tube segment 4 (24) can achieve closing and unfolding actions when the first supporting mechanism (36) and the second supporting mechanism (37) are contracted and supported; In the step 4), the pipe segment (2) is fixed to the inner wall of the pipeline workpiece (1) by gluing, welding or drilling holes in the pipe segment (2) and the pipeline workpiece (1) and connecting them with pins.

Images