Pipeline built-in expansion joint and pipeline installation method

Abstract

This invention discloses a built-in telescopic device for pipelines and a pipeline installation method. The built-in telescopic device includes a telescopic arm assembly, a guide wheel, a first pipeline, and a first tensioning assembly. The telescopic arm assembly includes a first telescopic arm, a second telescopic arm, and a third telescopic arm. The first telescopic arm is slidably inserted within the second telescopic arm, and the second telescopic arm is slidably inserted within the third telescopic arm. The guide wheel is rotatably connected to the rear end of the second telescopic arm. One end of the first pipeline extends into the gap between the second and third telescopic arms and is fixed to the front end of the third telescopic arm. The middle portion of the first pipeline is wound around the guide wheel, and the other end of the first pipeline extends into the first telescopic arm and is fixed to the front end of the first telescopic arm. The first tensioning assembly abuts against the first pipeline and is used to tension the first pipeline. In this application, the first tensioning assembly can tension the first pipeline, which can reduce the phenomenon of slack, jumping, and tangling of the first pipeline before and after the guide wheel.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, and in particular to a pipeline-embedded telescopic device and pipeline installation method. Background Technology

[0002] Currently, there are various methods for laying hydraulic lines and cables in aerial work platforms. External reel-type cable delivery devices expose the conduits, which are prone to aging over time. In special working environments, such as pruning branches or harvesting fruit, the exposed conduits are easily scratched and damaged by debris, leading to malfunctions and, in severe cases, safety accidents. As aerial work platforms become increasingly taller, the boom cross-section inevitably becomes smaller. Traditional cable delivery devices, due to their space constraints, limit the lightweight design of the boom. To solve these problems, a new cable laying method has emerged—the built-in roller-type cable laying method. However, with this method, during boom retraction, the cables are prone to slack and jumping around in front of and behind the rollers, which can interfere with structural components. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a pipeline built-in telescopic device and pipeline installation method, which solves the problem in the prior art of built-in roller type pipeline laying method that the pipeline is prone to slack and jump before and after the roller during the boom retraction process, thus causing interference with structural components.

[0004] The pipeline-embedded expansion joint device according to an embodiment of the present invention includes:

[0005] The telescopic arm assembly includes a first telescopic arm, a second telescopic arm, and a third telescopic arm, wherein the first telescopic arm is slidably inserted inside the second telescopic arm, and the second telescopic arm is slidably inserted inside the third telescopic arm.

[0006] The guide wheel is rotatably connected to the rear end of the second telescopic arm;

[0007] The first pipeline includes a first segment, a second segment, and a third segment connected in sequence. The first segment is located in the gap between the second telescopic arm and the third telescopic arm. The end of the first segment away from the second segment is fixed to the front end of the third telescopic arm. The second segment is wound around the wire guide wheel. The third segment extends into the first telescopic arm. The end of the third segment away from the second segment is fixed to the front end of the first telescopic arm.

[0008] A first tensioning component is mounted on the telescopic arm assembly. The first tensioning component abuts against the first line segment or the third line segment. The first tensioning component is used to tension the first pipeline.

[0009] The pipeline-embedded expansion joint according to embodiments of the present invention has at least the following beneficial effects:

[0010] During the extension process of the telescopic arm assembly, the first telescopic arm extends forward from inside the second telescopic arm, and the second telescopic arm extends forward from inside the third telescopic arm. The third segment pulls the second segment, and the second segment pulls the first segment, causing the guide wheel to rotate. The first tensioning component can then tension the first pipeline. During the retraction process of the telescopic arm assembly, the first telescopic arm retracts backward into the second telescopic arm, and the second telescopic arm retracts backward into the third telescopic arm. The first segment pulls the second segment, and the second segment pulls the third segment, causing the guide wheel to rotate. The first tensioning component can then tension the first pipeline. During the telescopic arm's extension and retraction, the first tensioning component can tension the first pipeline, reducing the slack, jumping, and tangling of the first pipeline before and after the guide wheel, ensuring a smooth retraction process for the first pipeline.

[0011] According to some embodiments of the present invention, the pipeline-embedded telescopic device further includes a second tensioning component, which is mounted on the telescopic arm assembly. The second tensioning component is used to tension the first pipeline. When the first tensioning component abuts against the first segment, the second tensioning component abuts against the third segment; when the first tensioning component abuts against the third segment, the second tensioning component abuts against the first segment.

[0012] According to some embodiments of the present invention, when the first tensioning component abuts against the first line segment, the first tensioning component is mounted on the second telescopic arm near the guide wheel, and the second tensioning component is mounted on the rear end of the first telescopic arm; when the first tensioning component abuts against the third line segment, the second tensioning component is mounted on the second telescopic arm near the guide wheel, and the first tensioning component is mounted on the rear end of the first telescopic arm.

[0013] According to some embodiments of the present invention, when the first tensioning assembly abuts against the first line segment, the first tensioning assembly includes a tensioning wheel, a tensioning seat, and a first tensioning spring. One end of the first tensioning spring is connected to the second telescopic arm, and the other end of the first tensioning spring is connected to the tensioning seat. The tensioning wheel is rotatably connected to the tensioning seat and abuts against the first line segment. The second tensioning assembly includes a damping element and a second tensioning spring. The damping element is sleeved on the third line segment. One end of the second tensioning spring is connected to the first telescopic arm, and the other end of the second tensioning spring is connected to the damping element.

[0014] According to some embodiments of the present invention, a bracket is provided at the rear end of the second telescopic arm. The bracket includes a rotating shaft, two support plates, and a locking member. The two support plates are spaced apart and connected to the second telescopic arm. A rotating hole is provided on each support plate, and a slot communicating with the rotating hole is provided on the support plate. Two first slots are spaced apart on the surface of the rotating shaft along the length direction of the rotating shaft. The slot is used to guide the first slot of the rotating shaft into the rotating hole. The rotating hole is used to install the rotating shaft. The locking member is connected to one end of the rotating shaft and is used to limit the two first slots to be misaligned with the two support plates. A wire guide wheel is rotatably connected to the rotating shaft and is located between the two support plates.

[0015] According to some embodiments of the present invention, the bracket is installed inside the rear end of the second telescopic arm, and a clearance opening is provided below the rear end of the second telescopic arm, with the lower end of the wire guide wheel protruding along the clearance opening.

[0016] According to some embodiments of the present invention, the bracket further includes a first wire stop bar and a second wire stop bar, the first wire stop bar and the second wire stop bar being detachably connected to the two support plates, the first wire stop bar being located above the wire guide wheel, and the second wire stop bar being located below and behind the wire guide wheel, the first wire stop bar and the second wire stop bar being used to restrict the pipeline on the wire guide wheel.

[0017] According to some embodiments of the present invention, the locking member includes a locking plate, one end of which is provided with a second slot, the first slot of the rotating shaft is engaged in the second slot, and the other end of the locking plate is connected to the support plate. The locking plate is used to restrict the movement of the rotating shaft in the slot.

[0018] According to some embodiments of the present invention, the pipeline-embedded telescopic device further includes a second pipeline and a cable chain, the telescopic arm assembly further includes a fourth telescopic arm, the third telescopic arm is slidably inserted within the fourth telescopic arm, the second pipeline includes a fourth segment and a fifth segment connected together, the fourth segment is located in the gap between the second telescopic arm and the third telescopic arm, the front end of the fourth segment is connected to the first segment, one end of the cable chain is connected to the rear end of the third telescopic arm, the other end of the cable chain extends into the gap between the third telescopic arm and the fourth telescopic arm and is fixed to the front end of the fourth telescopic arm, and the fifth segment is located within the cable chain.

[0019] A pipeline installation method according to an embodiment of the present invention includes the following steps:

[0020] S1. The fifth segment extends into the cable chain. One end of the cable chain is installed at the rear end of the third telescopic arm. The other end of the cable chain extends into the gap between the third telescopic arm and the fourth telescopic arm and is fixed at the front end of the fourth telescopic arm. The fourth segment extends into the gap between the second telescopic arm and the third telescopic arm. The front end of the fourth segment is fixed at the front end of the third telescopic arm and is connected to the first segment.

[0021] S2. Install the first tensioning assembly. The first tensioning assembly is installed on the second telescopic arm and protrudes along the clearance opening.

[0022] S3. The wire guide wheel is sleeved on the rotating shaft. The two first slots of the rotating shaft extend into the rotating hole along the two slots. The rotating shaft moves axially. The two first slots on the rotating shaft are offset from the two support plates. The other slot on the rotating shaft is located on the outside of the two support plates. The other slot on the rotating shaft is located on the inside of the two support plates. The second slot of the card plate is engaged with the rotating shaft and protrudes from the first slot on the outside of the two support plates.

[0023] S4. The second line segment is wound on the guide wheel, the first tensioning assembly abuts against the first line segment, the third line segment extends into the damping element of the second tensioning assembly, the third line segment extends into the interior of the first telescopic arm, the second tensioning spring of the second tensioning assembly is fixed to the rear end of the first telescopic arm, and the end of the third line segment away from the second line segment is fixed to the front end of the first telescopic arm to straighten the first pipeline. Before the first pipe clamp clamps the first pipeline, the first tensioning spring and the second tensioning spring need to be pre-tightened.

[0024] S5. The second wire guide rod connects to two support plates, the first wire stop rod connects to two support plates, and the other end of the clamping plate is fixed to one end of the first wire stop rod.

[0025] The pipeline installation method according to embodiments of the present invention has at least the following beneficial effects:

[0026] Cable chains are arranged on the fourth telescopic arm with the largest cross-section, and cable guide wheels are used to transport pipelines on the first, second, and third telescopic arms with smaller cross-sections. This clever combination of cable chains and cable guide wheels in pipeline laying not only solves the problem that external reels are prone to damaging pipelines, but also solves the problem that internal cable chains occupy a lot of space, especially the difficulty in arranging the innermost cable chain.

[0027] The guide wheel is easy to install and can adapt to extremely narrow installation spaces. The guide wheel is installed inside the rear end of the second telescopic arm, which can improve space utilization, does not affect the telescopic length of the telescopic arm, ensures a compact overall structure, and is conducive to the overall lightweighting of the telescopic arm assembly.

[0028] During the extension process of the telescopic arm assembly, the first telescopic arm extends forward from inside the second telescopic arm, and the second telescopic arm extends forward from inside the third telescopic arm. The third segment pulls the second segment, and the second segment pulls the first segment, causing the guide wheel to rotate. The first tensioning component can then tension the first pipeline. During the retraction process of the telescopic arm assembly, the first telescopic arm retracts backward into the second telescopic arm, and the second telescopic arm retracts backward into the third telescopic arm. The first segment pulls the second segment, and the second segment pulls the third segment, causing the guide wheel to rotate. The first tensioning component can then tension the first pipeline. During the telescopic arm extension and retraction process, the first tensioning component can tension the first pipeline, which can reduce the phenomenon of slack, jumping, and tangling of the pipeline before and after the guide wheel, and ensure a smooth pipeline retraction process.

[0029] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0031] Figure 1 This is a schematic diagram of the structure of the pipeline-embedded expansion joint device according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0033] Figure 3 This is a schematic diagram of the second telescopic arm, bracket, and cable guide wheel of the pipeline-embedded telescopic device according to an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the structure of the rotating shaft of the pipeline-embedded telescopic device according to an embodiment of the present invention;

[0035] Figure 5 This is a side view of the cable guide wheel and bracket of the pipeline built-in telescopic device according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the support plate of the pipeline built-in expansion joint device according to an embodiment of the present invention.

[0037] Icon labels:

[0038] 100. Telescopic arm assembly; 110. First telescopic arm; 111. First pipe clamp; 120. Second telescopic arm; 121. Clearance opening; 130. Third telescopic arm; 131. Second pipe clamp; 132. Third pipe clamp; 140. Fourth telescopic arm;

[0039] 200. Guide roller;

[0040] 300, First pipeline; 310, First segment; 320, Second segment; 330, Third segment;

[0041] 400. First tensioning assembly; 410. Tensioning wheel; 420. First tensioning spring;

[0042] 500. Second tensioning assembly; 510. Damping component; 520. Second tensioning spring;

[0043] 600, bracket; 610, support plate; 611, rotating hole; 612, slot; 613, mounting hole; 620, rotating shaft; 621, first slot; 630, retaining plate; 631, second slot; 640, first wire stop bar; 650, second wire stop bar;

[0044] 700, Second pipeline; 710, Fourth segment; 720, Fifth segment;

[0045] 800. Cable chain. Detailed Implementation

[0046] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] Please see Figure 1 , Figure 2 and Figure 3 According to an embodiment of the present invention, a pipeline-embedded telescopic device includes a telescopic arm assembly 100, a guide wheel 200, a first pipeline 300, and a first tensioning assembly 400. The telescopic arm assembly 100 includes a first telescopic arm 110, a second telescopic arm 120, and a third telescopic arm 130. The first telescopic arm 110 is slidably inserted within the second telescopic arm 120, and the second telescopic arm 120 is slidably inserted within the third telescopic arm 130. The guide wheel 200 is rotatably connected to the rear end of the second telescopic arm 120. The first pipeline 300 includes a first segment 310, a second segment 320, and a third segment 330 connected sequentially. The first segment 310 is located in the gap between the second telescopic arm 120 and the third telescopic arm 130, and the end of the first segment 310 away from the second segment 320 is fixed to the front end of the third telescopic arm 130 by a second pipe clamp 131. The second line segment 320 is wound around the guide wheel 200, and the third line segment 330 extends into the first telescopic arm 110. The end of the third line segment 330 away from the second line segment 320 is fixed to the front end of the first telescopic arm 110 by the first pipe clamp 111. The first pipeline 300 is a flexible pipeline. During the telescopic arm assembly 100's extension and retraction, the first pipeline 300 can be pulled, causing the guide wheel 200 to rotate. The first tensioning assembly 400 is installed on the telescopic arm assembly 100. The first tensioning assembly 400 abuts against the first line segment 310 or the third line segment 330, and is used to tension the first pipeline 300.

[0050] During the extension process of the telescopic arm assembly 100, the first telescopic arm 110 extends forward from inside the second telescopic arm 120, and the second telescopic arm 120 extends forward from inside the third telescopic arm 130. The third line segment 330 pulls the second line segment 320, and the second line segment 320 pulls the first line segment 310, causing the guide wheel 200 to rotate. The first tensioning assembly 400 can then tension the first pipeline 300. During the retraction process of the telescopic arm assembly 100, the first telescopic arm 110 retracts backward into the second telescopic arm 120, and the second telescopic arm 120 retracts backward into the third telescopic arm 130. The first line segment 310 pulls the second line segment 320, and the second line segment 320 pulls the third line segment 330, causing the guide wheel 200 to rotate. The first tensioning assembly 400 can then tension the first pipeline 300. During the telescopic boom's extension and retraction process, the first tensioning component 400 can tension the first pipeline 300, which can reduce the loosening, jumping, and rope tangling of the first pipeline 300 before and after the guide wheel 200, ensuring a smooth retraction process for the first pipeline 300.

[0051] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The built-in telescopic device also includes a second tensioning component 500, which is mounted on the telescopic arm assembly 100 and is used to tension the first pipeline 300. When the first tensioning component 400 abuts against the first line segment 310, the second tensioning component 500 abuts against the third line segment 330. When the first tensioning component 400 abuts against the third line segment 330, the second tensioning component 500 abuts against the first line segment 310. By providing two tensioning components, the first line segment 310 and the third line segment 330 can be tensioned separately, providing double tension. The first tensioning component 400 and the second tensioning component 500 provide better tension for the first pipeline 300, effectively preventing tension failure. This effectively eliminates the risk of slack, jumping, and rope tangling in the first pipeline 300 before and after the line guide 200 during the telescopic arm assembly 100's extension and retraction.

[0052] In some embodiments, see Figure 1 , Figure 2 and Figure 3 When the first tensioning component 400 abuts against the first line segment 310, the first tensioning component 400 is installed on the second telescopic arm 120 near the guide wheel 200, and the second tensioning component 500 is installed at the rear end of the first telescopic arm 110. The first tensioning component 400's placement near the guide wheel 200 effectively eliminates the risk of the first line segment 310 slackening, jumping, and becoming tangled during the telescopic arm assembly 100's extension and retraction. The second tensioning component 500 is installed inside the first telescopic arm 110, adapting to extremely narrow installation spaces, facilitating installation, and also tensioning the third line segment 330, effectively eliminating the risk of the third line segment 330 slackening, jumping, and becoming tangled during the telescopic arm assembly 100's extension and retraction.

[0053] When the first tensioning component 400 abuts against the third line segment 330, the second tensioning component 500 is installed on the second telescopic arm 120 near the guide wheel 200, while the first tensioning component 400 is installed at the rear end of the first telescopic arm 110. The second tensioning component 500's placement near the guide wheel 200 effectively eliminates the risk of the first line segment 310 slackening, jumping, and becoming tangled during the telescopic arm assembly 100's extension and retraction. The first tensioning component 400, installed inside the first telescopic arm 110, can adapt to extremely narrow installation spaces, is easy to install, and can tension the third line segment 330, effectively eliminating the risk of the third line segment 330 slackening, jumping, and becoming tangled during the telescopic arm assembly 100's extension and retraction.

[0054] In some embodiments, see Figure 1 , Figure 2 and Figure 3 When the first tensioning assembly 400 abuts against the first line segment 310, the first tensioning assembly 400 includes a tensioning wheel 410, a tensioning seat, and a first tensioning spring 420. One end of the first tensioning spring 420 is connected to the second telescopic arm 120, and the other end of the first tensioning spring 420 is connected to the tensioning seat. The tensioning wheel 410 is rotatably connected to the tensioning seat and abuts against the first line segment 310. The first tensioning spring 420 pushes the tensioning wheel 410 out of the relief opening 121, and the tensioning wheel 410 abuts against the first line segment 310, thus tensioning the first line segment 310 and preventing the first line segment 310 from slack and jump during the telescopic arm assembly 100's extension and retraction.

[0055] The second tensioning assembly 500 includes a damping element 510 and a second tensioning spring 520. The damping element 510 is sleeved on the third line segment 330. One end of the second tensioning spring 520 is connected to the first telescopic arm 110, and the other end of the second tensioning spring 520 is connected to the damping element 510. The second tensioning spring 520 pulls the damping element 510, and the damping element 510 rubs against the third line segment 330, which can prevent the third line segment 330 from slackening and bouncing when the telescopic arm assembly 100 extends and retracts.

[0056] In some embodiments, see Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A bracket 600 is provided at the rear end of the second telescopic arm 120. The bracket 600 includes a rotating shaft 620, two support plates 610, and a locking member. The two support plates 610 are spaced apart and connected to the second telescopic arm 120. Each support plate 610 has a rotating hole 611 and a slot 612, with the slot 612 communicating with the rotating hole 611. The rotating shaft 620 has two first slots 621 on its surface, and two first slots 612 are spaced apart along the length of the rotating shaft 620. The slots 612 guide the first slots 621 of the rotating shaft 620 into the rotating holes 611, which are used to install the rotating shaft 620. The locking member is connected to one end of the rotating shaft 620 and is used to prevent the two first slots 621 from being offset from the two support plates 610. A wire guide wheel 200 is rotatably connected to the rotating shaft 620 and is located between the two support plates 610.

[0057] The first slot 621 is an annular groove. The width of the slot 612 is smaller than the diameter of the rotating hole 611, and the width of the slot 612 is smaller than the diameter of the rotating shaft 620. The width of the slot 612 is larger than the diameter of the first slot 621 of the rotating shaft 620.

[0058] During installation, the wire guide wheel 200 must first be fitted onto the rotating shaft 620. The first slot 621 of the rotating shaft 620 is aligned with the two support plates 610. The support plate 610 is then inserted into the slot 612 at the first slot 621 of the rotating shaft 620. The rotating shaft 620 is moved to the rotating hole 611, and then moved axially along the rotating shaft 620, so that the positions of the two first slots 621 of the rotating shaft 620 are misaligned with the positions of the two support plates 610. The rotating shaft 620 is then locked with a locking device, preventing it from moving axially and from being removed from the slot 612. This allows the wire guide wheel 200 to be installed more easily inside the rear end of the second telescopic arm 120, making it suitable for extremely narrow installation spaces.

[0059] In some embodiments, see Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The bracket 600 is installed inside the rear end of the second telescopic arm 120. A clearance opening 121 is provided below the rear end of the second telescopic arm 120, and the lower end of the wire guide wheel 200 protrudes along the clearance opening 121. The lower end of the wire guide wheel 200 extends along the clearance opening 121 to facilitate tensioning of the first wire segment 310, so that the first wire segment 310 will not rub against and interfere with the outer surface of the second telescopic arm 120.

[0060] In some embodiments, see Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The bracket 600 also includes a first line stop 640 and a second line stop 650, which are detachably connected to two support plates 610. The first line stop 640 is located above the line guide wheel 200, and the second line stop 650 is located below and behind the line guide wheel 200. The first line stop 640 and the second line stop 650 are used to limit the cable on the line guide wheel 200. The first line stop 640 and the second line stop 650 can effectively eliminate the risk of the first line segment 310 slack, jumping, and tangling when the telescopic arm assembly 100 extends or retracts.

[0061] In some embodiments, see Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The locking mechanism includes a locking plate 630. One end of the locking plate 630 has a second slot 631, into which the first slot 621 of the rotating shaft 620 engages. The other end of the locking plate 630 is connected to a support plate 610, and the locking plate 630 restricts the movement of the rotating shaft 620 towards the slot 612. The other end of the locking plate 630 has a through hole, which is fitted onto the second line-stopping rod 650. The support plate 610 has a mounting hole 613, and the end of the second line-stopping rod 650 has an external thread. The second line-stopping rod 650 passes through the mounting hole 613 and connects to a nut. The connection between the second line-stopping rod 650 and the nut facilitates easy assembly and disassembly, and also helps to secure the locking plate 630. The locking plate 630 also supports the rotating shaft 620, providing support and preventing the rotating shaft 620 from moving towards the slot.

[0062] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The built-in telescopic device also includes a second pipeline 700 and a cable chain 800. The second pipeline 700 includes a fourth segment 710 and a fifth segment 720 connected to each other. The telescopic arm assembly 100 also includes a fourth telescopic arm 140, and a third telescopic arm 130 slidably passes through the fourth telescopic arm 140. The fourth segment 710 is located in the gap between the second telescopic arm 120 and the third telescopic arm 130. The front end of the fourth segment 710 is connected to the first segment 310, and the rear end of the fourth segment 710 is fixed to the third telescopic arm 130 by a third pipe clamp 132. One end of the cable chain 800 is connected to the rear end of the third telescopic arm 130, and the other end of the cable chain 800 extends into the gap between the third telescopic arm 130 and the fourth telescopic arm 140 and is fixed to the front end of the fourth telescopic arm 140. The fifth segment 720 is located inside the cable chain 800.

[0063] A cable chain 800 is arranged on the fourth telescopic arm 140 with the largest cross-section, and the cable guide wheel 200 is used to transport the pipeline on the first telescopic arm 110, the second telescopic arm 120 and the third telescopic arm 130 with smaller cross-sections. This cable chain 800 and the cable guide wheel 200 are cleverly combined in the pipeline laying structure, which not only solves the problem that the external reel is easy to damage the pipeline, but also solves the problem that the built-in cable chain 800 occupies a lot of space, especially the difficulty in arranging the innermost cable chain 800.

[0064] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 According to an embodiment of the present invention, a pipeline installation method includes the following steps:

[0065] S1. The fifth segment 720 extends into the cable chain 800. One end of the cable chain 800 is installed at the rear end of the third telescopic arm 130, and the other end of the cable chain 800 extends into the gap between the third telescopic arm 130 and the fourth telescopic arm 140 and is fixed at the front end of the fourth telescopic arm 140. The fourth segment 710 extends into the gap between the second telescopic arm 120 and the third telescopic arm 130. The front end of the fourth segment 710 is fixed at the front end of the third telescopic arm 130, and the front end of the fourth segment 710 is connected to the first segment 310.

[0066] S2. Install the first tensioning component 400. The first tensioning component 400 is installed on the second telescopic arm 120 and is exposed along the recess 121.

[0067] S3. The guide wheel 200 is sleeved on the rotating shaft 620. The two first slots 621 of the rotating shaft 620 extend into the rotating hole 611 along the two slots 612. The rotating shaft 620 moves axially. The two first slots 621 on the rotating shaft 620 are offset from the two support plates 610. The other slot on the rotating shaft 620 is located outside the two support plates 610. The other slot on the rotating shaft 620 is located inside the two support plates 610. The second slot 631 of the clamping plate 630 is engaged with the first slot 621 of the rotating shaft 620 that is exposed outside the two support plates 610.

[0068] S4. The second line segment 320 is wound around the guide wheel 200. The first tensioning assembly 400 abuts against the first line segment 310. The third line segment 330 extends into the damping element 510 of the second tensioning assembly 500. The third line segment 330 extends into the interior of the first telescopic arm 110. The second tensioning spring 520 of the second tensioning assembly 500 is fixed to the rear end of the first telescopic arm 110. The end of the third line segment 330 away from the second line segment 320 is fixed to the front end of the first telescopic arm 110. The first pipeline 300 is straightened. Before the first pipe clamp 111 clamps the first pipeline 300, the first tensioning spring 420 and the second tensioning spring 520 need to be pre-tightened.

[0069] S5. The second wire guide rod connects to two support plates 610, the first wire stop rod 640 connects to two support plates 610, and the other end of the clamping plate 630 is fixed to one end of the first wire stop rod 640.

[0070] A cable chain 800 is arranged on the fourth telescopic arm 140 with the largest cross-section, and the cable guide wheel 200 is used to transport the pipeline on the first telescopic arm 110, the second telescopic arm 120 and the third telescopic arm 130 with smaller cross-sections. This cable chain 800 and the cable guide wheel 200 are cleverly combined in the pipeline laying structure, which not only solves the problem that the external reel is easy to damage the pipeline, but also solves the problem that the built-in cable chain 800 occupies a lot of space, especially the difficulty in arranging the innermost cable chain 800.

[0071] The guide wheel 200 is easy to install and can adapt to extremely narrow installation spaces. The guide wheel 200 is installed inside the rear end of the second telescopic arm 120, which can improve space utilization, does not affect the telescopic length of the telescopic arm assembly 100, ensures a compact overall structure, and is conducive to the overall lightweighting of the telescopic arm assembly 100.

[0072] During the extension process of the telescopic arm assembly 100, the first telescopic arm 110 extends forward from inside the second telescopic arm 120, and the second telescopic arm 120 extends forward from inside the third telescopic arm 130. The third line segment 330 pulls the second line segment 320, and the second line segment 320 pulls the first line segment 310, causing the guide wheel 200 to rotate. The first tensioning assembly 400 can then tension the first pipeline 300. During the retraction process of the telescopic arm assembly 100, the first telescopic arm 110 retracts backward into the second telescopic arm 120, and the second... The telescopic arm 120 retracts into the third telescopic arm 130. The first line segment 310 pulls the second line segment 320, and the second line segment 320 pulls the third line segment 330, causing the guide wheel 200 to rotate. The first tensioning component 400 can tension the first pipeline 300. During the telescopic arm's extension and retraction, the first tensioning component 400 can tension the first pipeline 300, which can reduce the loosening, jumping, and tangling of the first pipeline 300 before and after the guide wheel 200, and ensure that the first pipeline 300 retracts smoothly.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pipeline-embedded expansion joint device, characterized in that, include: The telescopic arm assembly includes a first telescopic arm, a second telescopic arm, and a third telescopic arm, wherein the first telescopic arm is slidably inserted inside the second telescopic arm, and the second telescopic arm is slidably inserted inside the third telescopic arm. The guide wheel is rotatably connected to the rear end of the second telescopic arm; The first pipeline includes a first segment, a second segment, and a third segment connected in sequence. The first segment is located in the gap between the second telescopic arm and the third telescopic arm. The end of the first segment away from the second segment is fixed to the front end of the third telescopic arm. The second segment is wound around the wire guide wheel. The third segment extends into the first telescopic arm. The end of the third segment away from the second segment is fixed to the front end of the first telescopic arm. A first tensioning component is installed on the telescopic arm assembly. The first tensioning component abuts against the first line segment or the third line segment. The first tensioning component is used to tension the first pipeline. A second tensioning component is mounted on the telescopic arm assembly. The second tensioning component is used to tension the first pipeline. When the first tensioning component abuts against the first line segment, the second tensioning component abuts against the third line segment; when the first tensioning component abuts against the third line segment, the second tensioning component abuts against the first line segment. When the first tensioning assembly abuts against the first line segment, the first tensioning assembly includes a tensioning wheel, a tensioning seat, and a first tensioning spring. One end of the first tensioning spring is connected to the second telescopic arm, and the other end of the first tensioning spring is connected to the tensioning seat. The tensioning wheel is rotatably connected to the tensioning seat, and the tensioning wheel abuts against the first line segment. The second tensioning assembly includes a damping element and a second tensioning spring. The damping element is sleeved on the third line segment. One end of the second tensioning spring is connected to the first telescopic arm, and the other end of the second tensioning spring is connected to the damping element.

2. The pipeline-embedded expansion joint device according to claim 1, characterized in that, When the first tensioning component abuts against the first line segment, the first tensioning component is installed on the second telescopic arm near the guide wheel, and the second tensioning component is installed at the rear end of the first telescopic arm; when the first tensioning component abuts against the third line segment, the second tensioning component is installed on the second telescopic arm near the guide wheel, and the first tensioning component is installed at the rear end of the first telescopic arm.

3. The pipeline-embedded expansion joint device according to claim 1, characterized in that, The second telescopic arm has a support bracket at its rear end. The support bracket includes a rotating shaft, two support plates, and a locking member. The two support plates are spaced apart and connected to the second telescopic arm. Each support plate has a rotating hole and a slot communicating with the rotating hole. The rotating shaft has two first slots spaced apart along its length. The slots guide the first slots of the rotating shaft into the rotating holes. The rotating holes are used to install the rotating shaft. The locking member is connected to one end of the rotating shaft and is used to limit the two first slots from being offset from the two support plates. The wire guide wheel is rotatably connected to the rotating shaft and is located between the two support plates.

4. The pipeline-embedded expansion joint device according to claim 3, characterized in that, The bracket is installed inside the rear end of the second telescopic arm, and a clearance opening is provided below the rear end of the second telescopic arm, with the lower end of the wire guide wheel protruding along the clearance opening.

5. The pipeline-embedded expansion joint device according to claim 3, characterized in that, The bracket also includes a first wire stop bar and a second wire stop bar, which are detachably connected to the two support plates. The first wire stop bar is located above the wire guide wheel, and the second wire stop bar is located below and behind the wire guide wheel. The first wire stop bar and the second wire stop bar are used to restrict the pipeline on the wire guide wheel.

6. The pipeline-embedded expansion joint device according to claim 3, characterized in that, The locking component includes a locking plate, one end of which is provided with a second slot. The first slot of the rotating shaft is engaged in the second slot, and the other end of the locking plate is connected to the support plate. The locking plate is used to restrict the movement of the rotating shaft in the slot.

7. The pipeline-embedded expansion joint device according to claim 1, characterized in that, It also includes a second pipeline and a cable chain. The telescopic arm assembly further includes a fourth telescopic arm. The third telescopic arm is slidably inserted within the fourth telescopic arm. The second pipeline includes a fourth segment and a fifth segment connected together. The fourth segment is located in the gap between the second telescopic arm and the third telescopic arm. The front end of the fourth segment is connected to the first segment. One end of the cable chain is connected to the rear end of the third telescopic arm. The other end of the cable chain extends into the gap between the third telescopic arm and the fourth telescopic arm and is fixed to the front end of the fourth telescopic arm. The fifth segment is located within the cable chain.

8. A pipeline installation method, applied to the pipeline-embedded expansion joint device as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. The fifth segment extends into the cable chain. One end of the cable chain is installed at the rear end of the third telescopic arm. The other end of the cable chain extends into the gap between the third telescopic arm and the fourth telescopic arm and is fixed at the front end of the fourth telescopic arm. The fourth segment extends into the gap between the second telescopic arm and the third telescopic arm. The front end of the fourth segment is fixed at the front end of the third telescopic arm and is connected to the first segment. S2. Install the first tensioning assembly. The first tensioning assembly is installed on the second telescopic arm and protrudes along the clearance opening. S3. The wire guide wheel is sleeved on the rotating shaft. The two first slots of the rotating shaft extend into the rotating hole along the two slots. The rotating shaft moves axially. The two first slots on the rotating shaft are offset from the two support plates. The other slot on the rotating shaft is located on the outside of the two support plates. The other slot on the rotating shaft is located on the inside of the two support plates. The second slot of the card plate is engaged with the rotating shaft and protrudes from the first slot on the outside of the two support plates. S4. The second line segment is wound on the guide wheel, the first tensioning assembly abuts against the first line segment, the third line segment extends into the damping element of the second tensioning assembly, the third line segment extends into the interior of the first telescopic arm, the second tensioning spring of the second tensioning assembly is fixed to the rear end of the first telescopic arm, and the end of the third line segment away from the second line segment is fixed to the front end of the first telescopic arm to straighten the first pipeline. Before the first pipe clamp clamps the first pipeline, the first tensioning spring and the second tensioning spring need to be pre-tightened. S5. The second wire guide rod connects to two support plates, the first wire stop rod connects to two support plates, and the other end of the clamping plate is fixed to one end of the first wire stop rod.

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