A segment assembling device and a method for processing segments

Abstract

The application discloses a pipe piece assembling device and a pipe piece assembling processing method. The pipe piece assembling device comprises a pipe piece mounting head component, the pipe piece mounting head component comprises a main shaft, a first supporting mechanism and a second supporting mechanism; the first supporting mechanism and the second supporting mechanism are arranged on the main shaft and can move in the direction away from the axis of the main shaft, and can stably support the pipe piece detachably arranged on the first supporting mechanism and the second supporting mechanism to the inner wall of the pipe workpiece. The pipe piece assembling processing method uses the pipe piece assembling device to process the pipe piece workpiece, so that the degree of automation is improved when the pipe piece is attached and mounted to the inner wall of the pipe workpiece, and the process and result are accurate, efficient and low in cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of component and material assembly processing, in particular to a segment assembling device and a processing method for assembling segments. BACKGROUND

[0002] With the increasingly advanced and efficient mechanical processing, the devices and assembly methods and processes for the automatic assembly of separated multiple components or parts in special-shaped workpieces are gradually being iterated and updated. For the process step or the entire processing method that requires segment patching on the inner wall of a pipe workpiece, the traditional segment splicing method usually cannot complete the assembly of the entire annular segment externally, but needs to be positioned and spliced into an annular segment one by one inside the pipe. Therefore, a special support structure needs to be set up for each splicing, so this way not only has low efficiency, but also has many challenges in quality and safety, causing an increase in operation complexity and limiting the accuracy and efficiency of subsequent segment splicing and fixing.

[0003] In the prior art, the utility model with the publication number CN221442594U discloses a technical scheme of a shield segment splicing device, which realizes the quick connection and disassembly of the shield segment through hydraulic driving, and has the advantages of simple structure and convenient operation. However, this device is suitable for larger working spaces, and for small-inlet large-diameter pipes, the hydraulic driving method leads to an excessively large equipment size, which limits the applicability in narrow environments such as the inner cavity of a closed pipe, increases the complexity and maintenance cost of the system, and reduces the operation flexibility.

[0004] In view of the above-mentioned deficiencies of the prior art, the present application provides a segment splicing device and a processing method for assembling segments. The device can first pre-assemble multiple segments into a structure with an outer contour that can be contracted into an approximately annular shape outside the pipe, send it into the pipe through the inlet of the pipe, and automatically expand it into a complete circular segment inside the pipe, thereby improving work efficiency, ensuring splicing quality, and ensuring smooth construction links and the safety of workpieces and personnel. In addition, the device is also designed with a stable and precise support to provide sufficient support force when supporting the segments, thereby improving efficiency and installation accuracy and reducing installation difficulty, thereby solving the problem of low automation degree in the traditional method. SUMMARY

[0005] The present application aims to provide a segment assembling device and a processing method for assembling segments, which can improve the automation degree of segment assembly and fixation in the inner cavity of a pipe workpiece, improve efficiency, and enable multiple segments to be assembled at one time after accurate connection and positioning of the segments on the device, thereby ensuring efficiency and installation accuracy, reducing unnecessary cost consumption, and enabling the smooth progress of the segment assembly process.

[0006] The technical scheme adopted by the present application to solve the technical problem is: a pipe piece assembling device, characterized in that the pipe piece assembling device comprises a pipe piece mounting head component, the pipe piece mounting head component comprises a main shaft, a first supporting mechanism and a second supporting mechanism; the first supporting mechanism and the second supporting mechanism are arranged on the main shaft and can move in the direction away from the axis of the main shaft, and can stably support the pipe pieces detachably arranged on the first supporting mechanism and the second supporting mechanism to the inner wall of the pipeline 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 pipe piece connecting point, and at least one single pipe piece can be detachably connected to each pipe piece connecting point.

[0008] Optionally, the first supporting head is provided with two pipe piece connecting points for connecting pipe piece one and pipe piece two respectively, and the second supporting head is also provided with two pipe piece connecting points for connecting pipe piece three and pipe piece four respectively; the third supporting head is connected with pipe piece five at the pipe piece connecting point, and the fourth supporting head is connected with pipe piece six at the pipe piece connecting point.

[0009] Optionally, the pipe piece mounting head component further comprises a first sleeve ring, a first telescopic rod and a second telescopic rod; the main shaft is arranged in the first sleeve ring, and the first sleeve ring is provided with a first hinge seat; one end of the first telescopic rod is arranged on the main shaft, and the other end is connected to the first supporting head, and a fifth hinge seat is arranged between the connection positions of the two ends of the first telescopic rod; one end of the second telescopic rod is arranged on the main shaft, and the other end is connected to the first supporting head, and a sixth hinge seat is arranged between the connection positions of the two ends of the second telescopic rod; the pipe piece mounting head component further comprises 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 hingedly connected to one of the hinge points of the first hinge seat, and the other end is hingedly connected to one of the hinge points of the fifth hinge seat; one end of the second hinge rod is hingedly connected to the other hinge point of the first hinge seat, and the other end is hingedly connected to one of the hinge points of the sixth hinge seat; one end of each of the two hinge rods in the side hinge rod group one is hingedly connected to the other two hinge points in the fifth hinge seat, and the other end of each of the two hinge rods in the side hinge rod group one is connected to pipe piece one and pipe piece two respectively; one end of each of the two hinge rods in the side hinge rod group two is hingedly connected to the other two hinge points in the sixth hinge seat, and the other end of each of the two hinge rods in the side hinge rod group two is connected to pipe piece three and pipe piece four respectively.

[0010] Optionally, the pipe piece mounting head component further comprises a second collar, a third collar, a main shaft base, a first set of articulated rods and a second set of articulated rods, and the main shaft is arranged in the second collar and the third collar;

[0011] The second collar is provided with a second articulated seat, the third collar is provided with a third articulated seat, the main shaft base is provided with a fourth articulated seat, one end of the three articulated rods in the first set of articulated rods is articulated to one of the articulated points of the second articulated seat, the third articulated seat and the fourth articulated seat respectively, and the other end of the three articulated rods in the first set of articulated rods is articulated to the three articulated points on the third supporting head in sequence respectively, one end of the three articulated rods in the second set of articulated rods is articulated to the other articulated points of the second articulated seat, the third articulated seat and the fourth articulated seat respectively, and the other end of the three articulated rods in the second set of articulated rods is articulated to the three articulated points on the fourth supporting head in sequence respectively.

[0012] The first telescopic rod and the second telescopic rod are arranged between the main shaft base and the third collar at the position of the main shaft, the third collar is arranged between the arrangement positions of the first telescopic rod and the second telescopic rod and the second collar, and the second collar is arranged between the first collar and the third collar.

[0013] Optionally, the main shaft (31) is provided with a transmission component, which can drive the first collar (32), the second collar (33) and the third collar (34) to reciprocate on the main shaft (31).

[0014] Optionally, the transmission component is a lead screw, a stepped oil cylinder, a stepped electric cylinder or an electric motor.

[0015] The application further discloses a pipe piece assembling processing method, which comprises the following steps of using the pipe piece assembling device to process a pipe piece as a workpiece.

[0016] Step 1): fixing the pipe workpiece and connecting the pipe piece to the connecting points on the first supporting mechanism and the second supporting mechanism which are connected to the pipe piece as the workpiece;

[0017] Step 2): adjusting the transmission component of the main shaft, so that the first supporting mechanism and the second supporting mechanism are contracted towards the axial center of the main shaft, and the contour of the outer edge of all the connected pipe pieces can travel along the axial direction of the main shaft and enter the inner cavity space of the pipe workpiece.

[0018] Step 3): centering and positioning the preloaded pipe segments and the pipe segment installation head component, making the pipe segment installation head component connected with the pipe segments enter the preset working position, adjusting the transmission component of the main shaft to make the first and second jacking mechanisms realize jacking action in the direction away from the axis of the main shaft and make the pipe segments stretch out, and continuously adjusting the transmission component to make the two edges of the pipe segments along the direction of the axis of the main shaft abut against the adjacent pipe segments and make the pipe segments abut against the inner wall of the pipeline workpiece;

[0019] Step 4): fixing the pipe segments to the inner wall of the pipeline workpiece, adjusting the transmission component of the main shaft to make the first and second jacking mechanisms shrink in the direction of the axis of the main shaft, and then making the pipe segment installation head component retreat from the inner cavity of the pipeline workpiece.

[0020] Optionally, the pipe segment one in step 1) is further connected to one end of one of the side articulated rod groups one, the pipe segment two is further connected to one end of another of the side articulated rod groups one, the pipe segment three is further connected to one end of one of the side articulated rod groups two, and the pipe segment four is further connected to one end of another of the side articulated rod groups two; and the fixing of the pipe segments to the inner wall of the pipeline workpiece in step 4) is by means of gluing, welding or using a pin shaft to connect the pipe segments and the pipeline workpiece.

[0021] The pipe segment assembling device and the pipe segment assembling method provided by the application can improve the mechanical level of processing, reduce the inaccuracy caused by too many manual operation steps, reduce the working hours and labor input, and make the positioning of the pipe segments more accurate and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0023] Figure 1 is a structural schematic diagram of the pipe segment assembling device provided by an embodiment of the application;

[0024] Figure 2 is a three-dimensional structural schematic diagram of the pipe segment installation head component provided by an embodiment of the application;

[0025] Figure 3is an assembly perspective view of a pipe piece mounting head component provided by an embodiment of the present application;

[0026] Figure 4 is a schematic view of a processing link of a pipe piece connecting on a pipe piece mounting head component and being placed into a pipe workpiece in a pipe piece assembling method provided by an embodiment of the present application;

[0027] Figure 5 is a schematic view of a processing link of a pipe piece connecting on a pipe piece mounting head component and being propped and topped by a first propping and topping mechanism to an inner wall of a pipe workpiece in a pipe piece assembling method provided by an embodiment of the present application;

[0028] Figure 6 is a schematic view of a processing link of a pipe piece connecting on a pipe piece mounting head component and being propped and topped by a first propping and topping mechanism and a second propping and topping mechanism to an inner wall of a pipe workpiece in a pipe piece assembling method provided by an embodiment of the present application;

[0029] Figure 7 is a schematic view of a processing flow of a pipe piece connecting to a pipe piece mounting head component step to a pipe piece being propped and topped to an inner wall of a pipe workpiece step in a pipe piece assembling method provided by an embodiment of the present application;

[0030] Fig. 1 is a pipe workpiece; Fig. 2 is a pipe piece; Fig. 2.1 is a first pipe piece; Fig. 2.2 is a second pipe piece; Fig. 2.3 is a third pipe piece; Fig. 2.4 is a fourth pipe piece; Fig. 2.5 is a fifth pipe piece; Fig. 2.6 is a sixth pipe piece; Fig. 3 is a pipe piece mounting head component; Fig. 3.1 is a main shaft; Fig. 3.2 is a first sleeve ring; Fig. 3.2.1 is a first hinged seat; Fig. 3.3 is a second sleeve ring; Fig. 3.3.1 is a second hinged seat; Fig. 3.4 is a third sleeve ring; Fig. 3.4.1 is a third hinged seat; Fig. 3.5 is a main shaft base; Fig. 3.5.1 is a fourth hinged seat; Fig. 3.6 is a first propping and topping mechanism; Fig. 3.6.1 is a first propping and topping head; Fig. 3.6.2 is a second propping and topping head; Fig. 3.6.3 is a first telescopic rod; Fig. 3.6.4 is a second telescopic rod; Fig. 3.6.5 is a fifth hinged seat; Fig. 3.6.6 is a sixth hinged seat; Fig. 3.6.7 is a first hinged rod; Fig. 3.6.8 is a second hinged rod; Fig. 3.7 is a second propping and topping mechanism; Fig. 3.7.1 is a third propping and topping head; Fig. 3.7.2 is a fourth propping and topping head; Fig. 3.7.3 is a first hinged rod set; Fig. 3.7.4 is a second hinged rod set; Fig. 3.7.5 is a first side hinged rod set; Fig. 3.7.6 is a second side hinged rod set. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0032] In the present application, unless otherwise explicitly specified and limited, the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] In order to illustrate the technical solutions of the present application, the following will be described by specific embodiments:

[0034] According to an embodiment, in combination with Figure 1 , Figure 2 and Figure 3 , the present application provides a pipe piece assembling device in this embodiment, characterized in that the pipe piece assembling device comprises a pipe piece mounting head member 3, the pipe piece mounting head member 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 installed on the main shaft 31 and can move in the direction away from the axis of the main shaft 31, and can stably support the pipe piece 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, the components of the pipe piece 2 are not specifically limited, and are determined according to the pipe piece required for processing and assembly, and the connection point setting mode of the pipe piece 2 on the pipe piece mounting head member 3 and whether the corresponding pipe piece is connected can be determined according to the purpose of processing.

[0035] In Figure 2 and Figure 3 , the present application further provides a pipe piece assembling device, 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 one or more connection points of the pipe piece 2, and at least one single pipe piece 2 can be detachably connected to each connection point of the pipe piece 2.

[0036] According to another embodiment, the application further provides a segment assembling device, the first supporting head 361 is provided with two segment 2 connecting points, which are connected with segment one 21 and segment two 22 respectively, the second supporting head 362 is also provided with two segment 2 connecting points, which are connected with segment three 23 and segment four 24 respectively; the segment five 25 is connected on the segment 2 connecting point of the third supporting head 371, and the segment six 26 is connected on the segment 2 connecting point of the fourth supporting head 372.

[0037] According to another embodiment, the application further provides a segment assembling device, still in combination with the content of Figures 1 to 3 The segment installing head component 3 further comprises a first collar 32, a first telescopic rod 363 and a second telescopic rod 364; the main shaft 31 is arranged in the first collar 32, and the first collar 32 is provided with a first hinged seat 321; one end of the first telescopic rod 363 is arranged on the main shaft 31, and the other end is connected with the first supporting head 361, and a fifth hinged seat 365 is arranged between the connecting positions of the two ends of the first telescopic rod 363; one end of the second telescopic rod 364 is arranged on the main shaft 31, and the other end is connected with the first supporting head 362, and a sixth hinged seat 366 is arranged between the connecting positions of the two ends of the second telescopic rod 364; the segment installing head component 3 further comprises a first hinged rod 367, a second hinged rod 368, a side hinged rod group one 375 and a side hinged rod group two 376, one end of the first hinged rod 367 is hinged to one of the hinged points of the first hinged seat 321, and the other end is hinged to one of the hinged points of the fifth hinged seat 365; one end of the second hinged rod 368 is hinged to the other hinged point of the first hinged seat 321, and the other end is hinged to one of the hinged points of the sixth hinged 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 hinged points of the fifth hinged seat 365 respectively, and the other end of each of the two hinged rods in the side hinged rod group one 375 is connected with segment one 21 and 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 hinged points of the sixth hinged seat 366 respectively, and the other end of each of the two hinged rods in the side hinged rod group two 376 is connected with segment three 23 and segment four 24 respectively.

[0038] According to another embodiment, the pipe segment installation head component 3 further comprises a second collar 33, a third collar 34, a main shaft base 35, a first set of articulated rods 373 and a second set of articulated rods 374, the main shaft 31 is arranged in 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 main shaft base 35 is provided with a fourth articulated seat 351, one end of the three articulated rods in the first set of articulated rods 373 is respectively articulated to one of the articulated points of the second articulated seat 331, the third articulated seat 341 and the fourth articulated seat 351, the other end of the three articulated rods in the first set of articulated rods 373 is respectively articulated to the three articulated points on the third supporting head 371 in order, one end of the three articulated rods in the second set of articulated rods 374 is respectively articulated to the other one of the articulated points of the second articulated seat 331, the third articulated seat 341 and the fourth articulated seat 351, the other end of the three articulated rods in the second set of articulated rods 374 is respectively articulated to the three articulated points on the fourth supporting head 372 in order.

[0039] According to another embodiment, the pipe segment installation device is provided, the first telescopic rod 363 and the second telescopic rod 364 are arranged between the main shaft base 35 and the third collar 34 at the position of the main shaft 31, the third collar 34 is arranged between the arrangement position of the first telescopic rod 363 and the second telescopic rod 364 and the second collar 33, and the second collar 33 is arranged between the first collar 32 and the third collar 34. In this way, the components of the first supporting mechanism 36 and the second supporting mechanism 37 can be ensured not to interfere with each other during operation.

[0040] According to another embodiment, the pipe segment installation device is provided, the main shaft 31 is provided with a transmission component, which can drive the first collar 32, the second collar 33 and the third collar 34 to reciprocate on the main shaft 31.

[0041] According to another embodiment, the pipe segment installation device is provided, the main shaft 31 is provided with a transmission component, which can drive the first collar 32, the second collar 33 and the third collar 34 to reciprocate on the main shaft 31. Figure 4 、 Figure 5 、 Figure 6 and Figure 7 According to another embodiment, the pipe segment installation device is provided, the main shaft 31 is provided with a transmission component, which can drive the first collar 32, the second collar 33 and the third collar 34 to reciprocate on the main shaft 31.

[0042] Step 2): Adjust the transmission member of the main shaft 31 to make the first and second jacking mechanisms 36 and 37 shrink towards the axial center of the main shaft 31, so that the outer edges of all the connected pipe pieces 2 can move along the axial direction of the main shaft 31 and enter the inner cavity space of the pipe workpiece 1;

[0043] Step 3): Center and position the pre-assembled pipe pieces 2 and the pipe piece mounting head member 3, so that the pipe piece mounting head member 3 connected with the pipe pieces 2 enters the pre-set working position, adjust the transmission member of the main shaft 31 to make the first and second jacking mechanisms 36 and 37 perform jacking actions away from the axial center of the main shaft 31, and make the pipe pieces 2 expand, continue to adjust the transmission member to make the two edges of each pipe piece 2 along the axial direction of the main shaft 31 abut against the adjacent pipe pieces 2, and make the pipe pieces 2 abut against the inner wall of the pipe workpiece 1. Specifically, in order to ensure the machining accuracy and precision, the pre-assembled pipe pieces 2 and the pipe piece mounting head member 3 can be centered and positioned, so that the pipe piece mounting head member 3 connected with the pipe pieces 2 enters the pre-set working position, the transmission member of the main shaft 31 is adjusted to make the first and second jacking mechanisms 36 and 37 perform jacking actions away from the axial center of the main shaft 31, and make the first and second jacking heads 361 and 362 connected with the pipe pieces 1, 2, 3 and 4 expand, continue to adjust the transmission member to make the two edges of each pipe piece 1, 2, 3, 4, 5 and 6 along the axial direction of the main shaft 31 abut against the adjacent pipe pieces 2, and make the pipe pieces 2 abut against the inner wall of the pipe workpiece 1.

[0044] Step 4): Fix the pipe pieces 2 to the inner wall of the pipe workpiece 1, adjust the transmission member of the main shaft 31 to make the first and second jacking mechanisms 36 and 37 shrink towards the axial center of the main shaft 31, and then make the pipe piece mounting head member 3 retreat from the inner cavity of the pipe workpiece 1. The entire machining method can be seen from the following flow chart. Figure 7

[0045] ​According to another embodiment, the application also provides a method for assembling the pipe segments, wherein the pipe segment one 21 is connected to one end of one of the side hinge rod groups one 375, the pipe segment two 22 is connected to one end of another of the side hinge rod groups one 375, the pipe segment three 23 is connected to one end of one of the side hinge rod groups two 376, and the pipe segment four 24 is connected to one end of another of the side hinge rod groups two 376; and the pipe segment two is fixed to the inner wall of the pipe workpiece one by means of gluing, welding or using a pin shaft to connect through holes in the pipe segment two and the pipe workpiece one.

[0046] Therefore, in the technical scheme of the application disclosed in the application, the pipe segment mounting head member of the pipe segment assembling device and the structure of the components thereof are reasonable, which facilitates operation and maintenance. For the method for assembling the pipe segments, the installation of the pipe segment workpiece is also easy to operate, and after simple centering and positioning, the pipe segment assembling process with high automation level can be performed. Thus, the efficiency and precision are improved, and the processing cost is reduced.

[0047] Finally, it should be noted that: the above only describes the preferred embodiments of the application and is not intended to limit the application. Although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the application. Any modification, equivalent replacement, improvement, etc. shall be included in the protection scope of the application.

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); 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 one or more connection points of the tube segments (2), and at least one separate tube segment (2) can be detachably connected to the connection point of each tube segment (2); The segment mounting head component (3) further includes a first collar (32), a first telescopic rod (363) and a second telescopic rod (364); The main shaft (31) is inserted into a first sleeve (32), and a first hinge seat (321) is provided on the first sleeve (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 connection 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 second supporting head (362), and a sixth hinge seat (366) is installed between the connection 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 (375) is hinged to two other hinge points in the fifth hinge seat (365), and the other end of each of the two hinged rods in the side hinged rod group (375) is connected to the first pipe segment (21) and the second pipe segment (22). One end of each of the two hinged rods in the side hinged rod group (376) is hinged to two other hinge points in the sixth hinge seat (366), and the other end of each of the two hinged rods in the side hinged rod group (376) is connected to the third pipe segment (23) and the fourth pipe segment (24). The segment mounting head component (3) further comprises a second sleeve ring (33), a third sleeve ring (34), a main shaft base (35), a hinge rod group 1 (373) and a hinge rod group 2 (374); 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 hinged to one of the hinge points of the second hinge seat (331), the third hinge seat (341) and the fourth hinge seat (351), respectively. The other end of the hinged rod is hinged to the three hinge points on the third support 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 hinge seat (331), the third hinge seat (341) and the fourth hinge 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 support head (372) in sequence; 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).

2. The segment assembly device according to claim 1, characterized in that: The first supporting head (361) is provided with two connecting points of the tube segments (2), which are respectively connected to the tube segment 1 (21) and the tube segment 2 (22); the second supporting head (362) is also provided with two connecting points of the tube segments (2), which are respectively connected to the tube segment 3 (23) and the tube segment 4 (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).

3. The segment assembly device according to claim 1, 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).

4. The segment assembly device according to claim 1, characterized in that: The transmission component is a screw rod, a graded oil cylinder, a graded electric cylinder or an electric motor.

5. A method for assembling pipe segments, characterized by: The pipe segment assembly device according to any one of claims 1 to 4 is used to process a pipe segment (2) as a workpiece, and the processing method includes the following steps: Step 1): Fix the pipe workpiece (1) and connect the pipe segment (2) to the connection points on the first supporting mechanism (36) and the second supporting mechanism (37) that are connected to the pipe segment (2) as the workpiece respectively; 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 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): aligning and positioning the pre-installed pipe segment (2) and the pipe segment mounting head component (3), so that the pipe segment mounting head component (3) connected to 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 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), so that the first supporting mechanism (36) and the second supporting mechanism (37) are retracted toward the axis of the main shaft (31), and then the pipe segment mounting head component (3) is withdrawn and reset from the inner cavity of the pipe workpiece (1).

6. A method for processing assembled pipe segments according to claim 5, 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 the action of closing and unfolding 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.

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