Shield machine and its segment laying mechanism

Abstract

The present invention relates to a shield machine and its segment laying mechanism, the segment laying mechanism comprises a rotating member, a moving assembly, a telescopic member and a picking member; wherein, there are at least two moving assemblies, at least two moving assemblies are arranged at intervals around the circumference of the rotating member, the moving assembly comprises a connecting part connected to the rotating member, and a moving part capable of reciprocating along the axial direction of the rotating member relative to the connecting part; there are at least two telescopic members, the telescopic members are provided with connecting ends and telescopic ends arranged at intervals, each moving part is connected to at least one connecting end; the picking member is connected to the telescopic end, and at least one picking member is corresponding to each telescopic end. The segment laying mechanism can synchronously lay at least two segments on their respective positions to be laid, so that the stacking and laying of at least two segments on the tunnel wall can be completed quickly, and the laying efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of shield construction, in particular to a shield machine and a segment laying mechanism thereof. Background Art

[0002] With the continuous acceleration of urbanization, the application of shield construction method is becoming more and more widespread. During the tunnel excavation process, the shield machine needs to lay the pipe segments on the inner wall of the tunnel to resist the soil pressure, groundwater pressure and some special load forces. The traditional pipe segment laying mechanism can only stack the pipe segments in a single piece during the laying process, and the laying efficiency is low. Summary of the invention

[0003] Based on this, it is necessary to provide a shield machine and its segment laying mechanism to address the problem of low laying efficiency.

[0004] The technical solution is as follows:

[0005] On the one hand, a segment laying mechanism is provided, comprising:

[0006] Rotating parts;

[0007] A moving assembly, wherein the moving assembly is at least two and the at least two moving assemblies are arranged at intervals around the circumference of the rotating member, and the moving assembly comprises a connecting portion connected to the rotating member, and a moving portion capable of reciprocating relative to the connecting portion along the axial direction of the rotating member;

[0008] A telescopic member, wherein there are at least two of the telescopic members, the telescopic member is provided with a connecting end and a telescopic end arranged at intervals, and each of the moving parts is connected to at least one of the connecting ends;

[0009] A picking piece is connected to the telescopic end, and each telescopic end is provided with at least one picking piece.

[0010] In the segment laying mechanism of the above-mentioned embodiment, when the rotating part rotates a corresponding angle, it can drive at least two moving components, the telescopic part and the picking part to rotate a corresponding angle, and combined with the movement of the moving part along the first axial direction of the rotating part, the telescopic part and the picking part correspondingly connected to the moving part can be driven to move to just above the segment; when the telescopic part just above the segment is extended, the picking part on the telescopic end moves to pick up the segment, thereby completing the picking of at least two segments at one time; then the telescopic part retracts so that the segments are all suspended; and then combined with the movement of the moving part along the second axial direction of the rotating part, the at least two picked up segments can be moved to just above their respective positions to be laid, and further combined with the extension of the telescopic part and the unloading of the segments by the picking part, at least two segments can be laid synchronously on their respective positions to be laid, so that the stacking and laying of at least two segments on the tunnel wall can be completed quickly, and the laying efficiency is high. Furthermore, the rotating part only needs to rotate once, each moving part only needs to reciprocate once along the axial direction of the rotating part, and the telescopic part only needs to extend twice and retract once to complete the laying of at least two pipe segments. This reduces the number of movements of the rotating part, moving components and telescopic parts, which is beneficial to extending their service life, ensuring work reliability, and improving laying efficiency.

[0011] The technical solution is further described below:

[0012] In one of the embodiments, the segment laying mechanism further comprises a transition piece connected to the telescopic end, the transition piece has a transition surface that can match the outer contour of the segment, and the picking piece is provided on the transition surface.

[0013] In one embodiment, a mounting groove is provided on the adapter surface, the picking component includes a suction nozzle and a vacuum pump for evacuating the suction nozzle, the suction nozzle is arranged in the mounting groove, and the adsorption surface of the suction nozzle is on the same surface as the adapter surface.

[0014] In one of the embodiments, the segment laying mechanism further includes a mounting assembly, wherein the mounting assembly is disposed in the mounting groove, and the mounting assembly enables the suction nozzle to be mounted at any position along the length direction of the mounting groove.

[0015] In one embodiment, the mounting assembly includes a connecting member and a mounting member arranged along the length direction of the mounting groove, the connecting member slidingly cooperates with the mounting member, and along the length direction of the mounting groove, the mounting member is provided with at least two first connecting parts for fixed connection with the connecting member, and the suction nozzle is connected to the connecting member.

[0016] In one embodiment, each of the mounting members corresponds to at least two of the connecting members, and the connecting members and the suction nozzles are arranged in a one-to-one correspondence.

[0017] In one of the embodiments, at least two installation grooves spaced apart are provided on the adapter surface along the length direction of the adapter surface.

[0018] In one embodiment, the moving component includes an electric slide or a linear motor.

[0019] In one of the embodiments, the segment laying mechanism further comprises a rotation driving element, and a rotation output end of the rotation driving element is transmission-connected to the rotating member.

[0020] On the other hand, a shield machine is provided, comprising the segment laying mechanism.

[0021] The shield machine of the above embodiment can efficiently complete the stacking and laying of the segments on the tunnel wall by using the segment laying mechanism after the tunnel is opened, and the laying efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a structural schematic diagram of a pipe segment laying mechanism according to an embodiment;

[0025] Figure 2 for Figure 1 A schematic diagram of the connection between the moving part and the telescopic member of the segment laying mechanism;

[0026] Figure 3 for Figure 1 A schematic structural diagram of a transfer surface of a transfer piece of a segment laying mechanism;

[0027] Figure 4 for Figure 3 A schematic diagram of a structure in which a suction nozzle is installed on a transfer surface of a transfer piece of a pipe segment laying mechanism;

[0028] Figure 5 for Figure 1 Schematic diagram of the assembly of the rotating drive element and the rotating parts of the segment laying mechanism.

[0029] Description of reference numerals:

[0030] 10. Segment laying mechanism, 100. Rotating member, 200. Moving assembly, 210. Connecting portion, 220. Moving portion, 300. Telescopic member, 310. Connecting end, 320. Telescopic end, 400. Picking member, 410. Suction nozzle, 411. Adsorption surface, 420. Vacuum pump, 500. Adapter, 510. Adapter surface, 511. Mounting groove, 610. Connecting member, 611. Second threaded hole, 620. Mounting member, 621. First threaded hole, 700. Rotational drive element, 710. Rotational output end. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] like Figure 1 As shown, in one embodiment, a segment laying mechanism 10 is provided, comprising a rotating member 100, a moving assembly 200, a telescopic member 300 and a picking member 400. Thus, when the rotating member 100 rotates, it can drive the moving assembly 200, the telescopic member 300 and the picking member 400 to rotate synchronously, and the moving assembly 200 drives the telescopic member 300 to move, so that the picking member 400 moves to the top of the segment (not shown); then, the telescopic member 300 is extended, so that the picking member 400 is used to pick up the segment; then, the telescopic member 300 is retracted to make the segment suspended in the air; then, the moving assembly 200 is used to drive the telescopic member 300, the picking member 400 and the segment to move together to the top of the position to be laid; finally, the telescopic member 300 is extended again, and the picking member 400 unloads the segment, so that the segment is laid on the position to be laid; this reciprocating process can complete the laying of the segment on the inner wall of the tunnel.

[0033] like Figure 1 and Figure 2As shown, specifically, there are at least two moving components 200, and at least two moving components 200 are arranged at intervals around the circumference of the rotating member 100. The moving component 200 includes a connecting portion 210 connected to the rotating member 100 by screwing, welding, riveting or clamping, and a moving portion 220 that can reciprocate along the axial direction of the rotating member 100 relative to the connecting portion 210; the telescopic member 300 is provided with connecting ends 310 and telescopic ends 320 arranged at intervals, and each moving portion 220 is connected to at least one connecting end 310 by screwing, welding, riveting or clamping; the picking member 400 is connected to the telescopic end 320 by screwing, welding, riveting or clamping, and each telescopic end 320 is provided with at least one picking member 400. Thus, when the rotating member 100 rotates a corresponding angle, it can drive at least two moving components 200, the telescopic member 300 and the picking member 400 to rotate a corresponding angle, and the moving part 220 is combined with the first axial direction of the rotating member 100 (such as Figure 2 The telescopic member 300 and the picking member 400 connected to the moving part 220 are moved to the top of the pipe segment; when the telescopic member 300 above the pipe segment is extended, the picking member 400 on the telescopic end 320 is moved to pick up the pipe segment, thereby completing the picking up of at least two pipe segments at one time; then the telescopic member 300 is retracted to make the pipe segments suspended; then, the moving part 220 is combined with the second axial direction (as shown in FIG. Figure 2 The movement of the at least two pipe segments picked up by the telescopic member 300 (shown in the direction B) (wherein the second axial direction is opposite to the first axial direction, for example, the second axial direction is to the left, and the first axial direction is to the right), so that the at least two pipe segments picked up can be moved to the top of their respective positions to be laid, and further combined with the extension of the telescopic member 300 and the unloading of the pipe segments by the picking member 400, at least two pipe segments are synchronously laid on their respective positions to be laid, so that the stacking and laying of at least two pipe segments on the tunnel wall can be completed quickly, and the laying efficiency is high. In addition, the rotating member 100 only needs to rotate once, each moving part 220 only needs to reciprocate once along the axial direction of the rotating member 100, and the telescopic member 300 only needs to extend twice and retract once to complete the laying of at least two pipe segments once, which reduces the number of movements of the rotating member 100, the moving assembly 200 and the telescopic member 300, which is conducive to extending their service life, ensuring the reliability of work, and also improving the laying efficiency.

[0034] The rotating member 100 may be a turntable, a rotating wheel or other rotating element. The moving component 200 may be an electric slide rail, a linear motor or other element capable of driving the telescopic member 300 to move linearly; when the moving component 200 is an electric slide rail, the track of the electric slide rail is the connecting part 210, and the slider of the electric slide rail is the moving part 220, and the slider can move back and forth along the track; when the moving component 200 is a linear motor, the stator part of the linear motor is the connecting part 210, and the moving part of the linear motor is the moving part 220. The telescopic member 300 may be a hydraulic cylinder, a pneumatic cylinder or other existing element capable of providing telescopic motion, and the cylinder body (i.e., the connecting end 310) may be fixedly mounted on the moving part 220 by welding, screwing or the like, and the picking member 400 may be fixedly mounted on the end of the telescopic rod (i.e., the telescopic end 320) by welding or screwing or the like.

[0035] It should be noted that each telescopic end 320 is provided with at least one corresponding picking member 400 , which means that each telescopic end 320 may be provided with only one picking member 400 , or may be provided with two, three or more picking members 400 .

[0036] In addition, there may be an intermediate element between the picking member 400 and the telescopic end 320 to facilitate installation and connection. Figures 1 to 4 As shown, in one embodiment, the pipe segment laying mechanism 10 further includes an adapter 500 connected to the telescopic end 320. The adapter 500 has a transfer surface 510 that can match the outer contour of the pipe segment. The pick-up member 400 is fixed on the transfer surface 510 by screwing, welding or riveting. In this way, after the adapter 500 is fixed on the telescopic end 320 by welding, riveting or screwing, the pick-up member 400 is fixed on the transfer surface 510 of the adapter 500 by welding, riveting, screwing or clamping, etc., which is convenient and reliable to install. In addition, the contour of the transfer surface 510 matches the outer contour of the pipe segment. After the pick-up member 400 picks up the pipe segment, the outer wall of the pipe segment can be fitted with the transfer surface 510, ensuring that the pick-up member 400 can stably and reliably pick up the pipe segment to avoid falling. Furthermore, at least two pick-up members 400 may be distributed on the adapter surface 510, so that the planes where the pick-up surfaces of all pick-up members 400 are located are parallel to the adapter surface 510, so that at least two pick-up members 400 can achieve reliable and stable connection with the pipe segment without gaps. The adapter 500 may be an adapter plate, an adapter sheet or other structures.

[0037] like Figure 3 and Figure 4 As shown, further, a mounting groove 511 is provided on the transfer surface 510. Figure 1 and Figure 4 As shown, the pick-up member 400 includes a suction nozzle 410 and a vacuum pump 420 for evacuating the suction nozzle 410. Figure 4 As shown, the suction nozzle 410 is arranged in the installation groove 511, and the suction surface 411 of the suction nozzle 410 is on the same surface as the transition surface 510. In this way, when the telescopic end 320 of the telescopic member 300 is extended and retracted, thereby driving the transition surface 510 to move to fit the outer wall of the pipe segment, the suction nozzle 410 can be vacuumed by the vacuum pump 420, so that the pipe segment can be stably and reliably adsorbed and picked up, so that the pipe segment can be stably and reliably fit the transition surface 510, combined with the retraction of the telescopic member 300 and the movement of the moving part 220 along the second axial direction, the pipe segment can be transported to the top of the part to be laid. Among them, the suction surface 411 of the suction nozzle 410 refers to the end face of the suction nozzle 410 facing the pipe segment, and preferably the contour of the suction surface 411 also matches the outer contour of the pipe segment, which increases the fitting area and makes the adsorption more reliable. The vacuum pump 420 can be fixed on the rotating member 100 by means of clamping, screwing or riveting, or it can be external. The mounting groove 511 may be a strip groove. Of course, in other embodiments, the picking member 400 may also pick up the pipe segment by clamping (eg, grabbing by a manipulator).

[0038] The suction nozzle 410 may be fixed on the inner wall of the mounting groove 511 by means of snap connection, plug connection or screw connection; of course, the suction nozzle 410 may also be arranged in the mounting groove 511 through an intermediate element.

[0039] In one embodiment, the segment laying mechanism 10 further includes an installation assembly (not labeled). The installation assembly is disposed in the installation slot 511, and the installation assembly enables the suction nozzle 410 to be installed along the length direction of the installation slot 511 (e.g. Figure 3 and Figure 4 In this way, the installation assembly can not only realize the installation of the suction nozzle 410 in the installation groove 511, but also flexibly adjust the installation position of the suction nozzle 410 in the installation groove 511 according to the actual size of the pipe segment, so as to ensure that the suction nozzle 410 can accurately and reliably suck and pick up the pipe segment.

[0040] Among them, the installation component enables the suction nozzle 410 to be installed at any position along the length direction of the installation groove 511. This can be achieved by sliding cooperation between the installation component and the suction nozzle 410, or by fixing the suction nozzle 410 in the length direction of the installation component by welding, screwing or riveting.

[0041] like Figure 3 and Figure 4As shown, in one embodiment, the mounting assembly includes a connecting member 610 and a mounting member 620 arranged along the length direction of the mounting groove 511. The connecting member 610 and the mounting member 620 are slidably matched. Along the length direction of the mounting groove 511, the mounting member 620 is provided with at least two first connecting parts for fixedly connecting with the connecting member 610. The suction nozzle 410 is connected to the connecting member 610. In this way, after the suction nozzle 410 is fixed on the connecting member 610 by screwing, riveting or welding, the suction nozzle 410 can be driven to move flexibly along the length direction of the mounting groove 511 through the sliding cooperation between the connecting member 610 and the mounting member 620, and the connecting member 610 is fixedly connected with different first connecting parts, and after changing the installation position of the suction nozzle 410 in the length direction of the mounting groove 511, stable and reliable installation and fixation can be achieved to ensure the reliability of the work. By changing the installation position of the suction nozzle 410 in the length direction of the installation groove 511, the installation position of the suction nozzle 410 can be adapted to the requirements of picking up pipe segments of different lengths and weights, ensuring the stability and reliability of pipe segment picking, and also enabling the suction nozzle 410 to fit the outer wall of the pipe segment as much as possible, so as to achieve a good adsorption effect. Among them, the mounting member 620 can be rod-shaped or strip-shaped, and the mounting member 620 can be connected to the inner wall of the installation groove 511 by welding, riveting or screwing, so that the mounting member 620 is fixed in the installation groove 511 along the length direction of the installation groove 511; the connecting member 610 can be block-shaped or plate-shaped; by providing a corresponding slide groove or slide rail on the mounting member 620, the sliding cooperation between the connecting member 610 and the slide groove or slide rail can be utilized to realize the reciprocating movement of the connecting member 610 along the length direction of the installation groove 511, thereby driving the suction nozzle 410 to reciprocate along the length direction of the installation groove 511.

[0042] Furthermore, each mounting member 620 corresponds to at least two connecting members 610, and the connecting members 610 are arranged in one-to-one correspondence with the suction nozzles 410. In this way, at least two suction nozzles 410 can be arranged corresponding to one mounting member 620 by using at least two connecting members 610, which can not only ensure stable and reliable suction and picking of the pipe segment, but also can meet the picking requirements of pipe segments of different sizes by flexibly adjusting the installation and fixing position of each suction nozzle 410 in the installation groove 511, ensure that the suction force on the pipe segment is uniform, and prevent the pipe segment from falling after being suspended in the air.

[0043] The fixed connection between the connecting member 610 and the first connecting portion can be achieved by plugging, snapping, screwing, etc., as long as the connecting member 610 and the mounting member 620 can be stably and reliably connected as a whole. Figure 3As shown, for example, the first connecting portion includes a first threaded hole 621 arranged on the mounting member 620, at least two first threaded holes 621 are arranged at intervals along the length direction of the mounting member 620, and the connecting member 610 is provided with a second threaded hole 611 that can be connected with the first threaded hole 621. When the connecting member 610 slides to a suitable position relative to the mounting member 620 so that the first threaded hole 621 is connected with the second threaded hole 611, the fasteners such as bolts or screws are matched with the threads of the second threaded hole 611 and the first threaded hole 621, so as to realize the installation and fixation of the connecting member 610 and the mounting member 620, and then realize the adjustment of the installation position of the suction nozzle 410 in the mounting groove 511.

[0044] In one embodiment, along the length direction of the transition surface 510 (eg Figure 3 and Figure 4 As shown in the D direction, at least two installation grooves 511 are provided on the transition surface 510. In this way, by opening at least two installation grooves 511 on the transition surface 510, a suction nozzle 410 is installed in each installation groove 511, and the adsorption surface 411 of the suction nozzle 410 coincides with the transition surface 510, so that the adsorption and picking up of the pipe segment can be achieved more stably and reliably; and at least two installation grooves 511 are arranged at intervals along the length direction of the transition surface 510, and a suction nozzle 410 is provided in each installation groove 511, which can also meet the requirements for picking up pipe segments of different widths. Furthermore, each installation groove 511 is correspondingly provided with an installation component, and the installation member 620 of each installation component corresponds to at least two connecting members 610, that is, each installation groove 511 is correspondingly provided with at least two suction nozzles 410, and the installation position of the suction nozzle 410 in the installation groove 511 can be flexibly adjusted. In this way, it can be flexibly adjusted according to changes in the size (length and width) of the pipe segment to meet usage requirements.

[0045] like Figure 5 As shown, on the basis of any of the above embodiments, the segment laying mechanism 10 further includes a rotary drive element 700, and a rotary output end 710 of the rotary drive element 700 is transmission-connected with the rotating member 100. In this way, the rotary output end 710 of the rotary drive element 700 is rotated to drive the rotating member 100 to rotate, thereby driving the moving assembly 200, the telescopic member 300 and the picking member 400 to rotate synchronously, and combining the movement of the moving assembly 200, the telescopic member 300 and the picking action of the picking member 400, the segment laying is completed. Among them, the rotary drive element 700 can be a servo motor or other existing elements that can provide a rotary driving force. The transmission connection between the rotary output end 710 and the rotating member 100 can be achieved by the cooperation of a key and a keyway, or by a coupling connection.

[0046] In one embodiment, a shield machine is further provided, comprising the segment laying mechanism 10 of any of the above embodiments.

[0047] The shield machine of the above embodiment can efficiently complete the stacking and laying of the segments on the tunnel wall by using the segment laying mechanism 10 after the tunnel is opened, and the laying efficiency is high.

[0048] In the description of the present invention, it should be understood that 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 positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. The term "and / or" used in the present invention includes any and all combinations of one or more related listed items.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0053] It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" may mean within one or more standard deviations, which are not limited here.

[0054] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A segment laying mechanism, characterized in that: include: A rotating member, wherein the rotating member is a rotating disk or a rotating wheel; A moving assembly, wherein the moving assembly is at least two and the at least two moving assemblies are arranged at intervals around the circumference of the rotating member, and the moving assembly comprises a connecting portion connected to the rotating member, and a moving portion capable of reciprocating relative to the connecting portion along the axial direction of the rotating member; A telescopic member, wherein there are at least two of the telescopic members, the telescopic member is provided with a connecting end and a telescopic end arranged at intervals, and each of the moving parts is connected to at least one of the connecting ends; A picking piece, the picking piece is connected to the telescopic end, and each telescopic end is provided with at least one picking piece; A transfer piece, the transfer piece is connected to the telescopic end, the transfer piece has a transfer surface that can match the outer contour of the pipe segment, the transfer surface is provided with the picking piece; the transfer surface is provided with a mounting groove, the picking piece includes a suction nozzle and a vacuum pump for vacuuming the suction nozzle, the suction nozzle is arranged in the mounting groove, and the suction surface of the suction nozzle and the transfer surface are on the same surface; The mounting assembly is arranged in the mounting groove, and the mounting assembly enables the suction nozzle to be mounted at any position along the length direction of the mounting groove.

2. The segment laying mechanism according to claim 1, characterized in that: The mounting assembly includes a connecting piece and a mounting piece arranged along the length direction of the mounting groove. The connecting piece is slidably matched with the mounting piece. Along the length direction of the mounting groove, the mounting piece is provided with at least two first connecting parts for fixed connection with the connecting piece, and the suction nozzle is connected to the connecting piece.

3. The segment laying mechanism according to claim 2, characterized in that: Each of the mounting members corresponds to at least two of the connecting members, and the connecting members and the suction nozzles are arranged in a one-to-one correspondence.

4. The segment laying mechanism according to claim 1, characterized in that: At least two installation grooves are arranged at intervals on the adapter surface along the length direction of the adapter surface.

5. The segment laying mechanism according to any one of claims 1 to 4, characterized in that: The moving assembly includes an electric slide or a linear motor.

6. The segment laying mechanism according to any one of claims 1 to 4, characterized in that: The segment laying mechanism further comprises a rotary drive element, a rotary output end of which is transmission-connected to the rotating member.

7. A shield machine, characterized in that: It comprises a segment laying mechanism as described in any one of claims 1 to 6.

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