Underground pipeline mounting device and construction method thereof

Abstract

The invention discloses an underground pipeline mounting device and a construction method thereof, and the underground pipeline mounting device comprises a support frame which is arranged on the ground and is located on one side of a pit of a to-be-mounted pipeline; each electric hoist is arranged on the supporting frame in a sliding mode in the longitudinal direction of the concave pit; each electric hoist corresponds to one clamping mechanism, each to-be-installed pipeline corresponds to two clamping mechanisms in the installation process, each clamping mechanism is used for being arranged on the circumferential side face of the corresponding to-be-installed pipeline in a sleeving mode, and each clamping mechanism comprises a fixing block and a plurality of clamping blocks. The underground pipeline mounting device is simple in structure, low in manufacturing cost and capable of rapidly and fixedly connecting pipelines and stably and safely moving on the ground before moving to a pit, construction safety is guaranteed, after the pipelines are moved into the pit, the device can be conveniently and rapidly taken down from the pipelines, and construction efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline installation and construction, and more specifically, to an underground pipeline installation device and a construction method thereof. Background Art

[0002] Digging a pit underground and burying an underground drainage pipe in the pit is used to discharge urban sewage and rainwater in time, which is an important guarantee for ensuring the normal order of urban production and life. At present, underground municipal drainage pipes are usually made by splicing multiple pipe units. During the installation of underground pipes, the pipe units need to be hoisted and lowered into the pit. The existing technology usually uses a hoisting device to achieve this. Ropes are tied at both ends of the pipe, and the ropes are connected to the lifting components of the hoisting device. Then the pipe is hoisted and lowered into the pit. Due to the heavy weight of the pipe, it is impossible to ensure the construction safety during the pipe hoisting process by only connecting it with the hoisting device with a rope. In addition, after the pipe is hoisted into the pit, when welding the butt joints of the two adjacent pipes, other rotating tools are required to rotate the pipe to rotate the gap to be welded to the top for easy welding. Summary of the invention

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0004] In order to achieve these purposes and other advantages according to the present invention, there is provided an underground pipeline installation device, which includes: A support frame is provided on the ground and is located on one side of the pit where the pipeline is to be installed; A plurality of electric hoists are arranged on the support frame at intervals along the longitudinal direction of the pit, and each electric hoist is slidably arranged on the support frame along the longitudinal direction of the pit; Multiple clamping mechanisms, one clamping mechanism is correspondingly provided for each electric hoist, and two clamping mechanisms are correspondingly provided for each pipe to be installed during the installation process, each clamping mechanism is used to be sleeved on the circumferential side of the corresponding pipe to be installed, and each clamping mechanism includes: The fixing block is a cubic structure, with a circular through hole in the middle for the pipe to be installed to pass through, a roller at the bottom of the fixing block, and a lifting lug at the top for connecting with the hook of the corresponding electric hoist; A plurality of clamping blocks are arranged at intervals along the circumferential direction between the inner wall of the through hole and the pipe to be installed. Each clamping block is an arc-shaped structure adapted to the circumferential side of the pipe to be installed. The convex surface of the clamping block at the bottom is connected to the inner wall of the through hole through a vertically arranged support seat, and the convex surface of each remaining clamping block is connected to the inner wall of the through hole through a first telescopic rod, and the first telescopic rod is extended and retracted along the radial direction of the pipe.

[0005] Preferably, in the underground pipeline installation device, each clamping mechanism also includes a sleeve, which is arranged between the through hole and the multiple clamping blocks, and the sleeve is rotatably connected to the inner wall of the through hole through a bearing, and one end of the first telescopic rod corresponding to each clamping block is connected to the inner wall of the sleeve, and the other end is connected to the convex surface of the corresponding clamping block.

[0006] Preferably, in the underground pipeline installation device, a ball is rolled and embedded on the concave surface of the clamping block at the bottom, and an elastic rubber pad is applied on the concave surface of each clamping block except the bottom clamping block.

[0007] Preferably, in the underground pipeline installation device, each first telescopic rod is sleeved with a first spring, one end of which is connected to the inner wall of the sleeve, and the other end of which extends radially and is connected to the convex surface of the clamping block.

[0008] Preferably, in the underground pipeline installation device, each first telescopic rod comprises a first rod body and a second rod body which are slidably sleeved inside and outside, one end of the second rod body is fixedly connected to the inner wall of the sleeve, a first electromagnet is arranged inside the second rod body, one end of the first rod body passes through the other end of the second rod body and is inserted into the second rod body, and a first iron block adapted to the first electromagnet is arranged, and the other end of the first rod body is connected to the convex surface of the corresponding clamping block; The first spring and the first electromagnet are configured as follows: when the first electromagnet is energized, the first iron block moves toward the direction close to the sleeve under the adsorption action of the first electromagnet, thereby driving the clamping block to move toward the direction close to the sleeve, the first telescopic rod is shortened, the first spring is compressed, and the spatial size of the circular structure formed by the multiple clamping blocks is maximized; when the first electromagnet is de-energized, the first electromagnet releases the adsorption of the first iron block, and under the action of the first spring, the first telescopic rod is extended to push the clamping block toward the direction away from the sleeve, and the spatial size of the circular structure formed by the multiple clamping blocks becomes smaller.

[0009] Preferably, in the underground pipeline installation device, a plurality of second telescopic rods are provided on the outer wall of the inner ring of the bearing, the second telescopic rods include a fixed cylinder extending in the radial direction of the bearing and a limit rod with one end sliding along the radial direction of the bearing with the inner wall of the fixed cylinder, one end of the limit rod is connected to the inner wall of the fixed cylinder through a second spring, the other end of the limit rod is provided with a second iron block, and a second electromagnet adapted to the second iron block is provided on the inner wall of the outer ring of the bearing; The second spring and the second electromagnet are configured such that when the second electromagnet is powered on, the second iron block is adsorbed on the second electromagnet, the inner ring and the outer ring of the bearing are relatively fixed, and the sleeve and the fixed block are temporarily relatively fixed; when the second electromagnet is powered off, the second electromagnet releases the adsorption of the second iron block, the inner ring and the outer ring of the bearing are released from relative fixation, and the sleeve can rotate in a circle around the axis of the sleeve relative to the fixed block.

[0010] The present invention also provides a construction method of the underground pipeline installation device, which comprises: S1. A support frame is set up on one side of the pit where the pipe is to be installed, and a plurality of electric hoists are arranged on the support frame at intervals along the longitudinal direction of the pit, and each electric hoist is slidably connected to the support frame along the longitudinal direction of the pit; S2. Transport the pipeline to be installed to the other side of the pipeline pit, with the axis of the pipeline extending in the longitudinal direction of the pit, and number the pipelines 1 to n in the longitudinal direction of the pit; S3. A cushion block is arranged at the bottom of the No. 1 pipeline near the middle so that both ends of the pipeline are suspended in the air, and a clamping mechanism is respectively sleeved at both ends of the No. 1 pipeline. Specifically, before each clamping mechanism is sleeved on the pipeline, all the first electromagnets are energized, all the second electromagnets are energized, and the space size of the circular structure formed by the multiple clamping blocks is larger than the size of the pipeline. The square frame is pushed to the end of the pipeline, and the axis of the pipeline and the axis of the sleeve are located on the same line. The clamping mechanism is moved in the direction close to the pipeline, and the end of the pipeline passes through the space of the circular structure surrounded by the multiple clamping blocks. Then, all the first electromagnets are de-energized, and the clamping blocks are moved in the direction close to the circumferential side of the pipeline under the action of the first spring, and the multiple clamping blocks are in contact with the circumferential side wall of the pipeline; S4, connect the lifting lugs on each fixed block set on each No. 1 pipe to the hook of an electric hoist, at this time, the electric hoist and the corresponding square frame are arranged in correspondence with each other in the horizontal direction, start the two electric hoists corresponding to the No. 1 pipe, pull the No. 1 pipe toward the direction close to the pit to the top of the pit, and then start the electric hoist again to lower the No. 1 pipe and the two clamping mechanisms thereon into the pit; S5. Repeat operations S2 to S4 to move pipe No. 2 into the pit and connect the adjacent ends of pipe No. 1 and pipe No. 2; S6. Welding the butt joints of pipes No. 1 and No. 2 by using an electric welding device. During the welding process, the second electromagnet is powered off, so that the sleeve and the relatively fixed block rotate, thereby driving the pipes to rotate, and rotating the butt joints of the two pipes to the working position; S7. After the butt welding of pipe No. 1 and pipe No. 2 is completed, the first electromagnet is energized, and the clamping blocks on pipe No. 1 and pipe No. 2 release the clamping of the pipes. Then, the clamping mechanisms on pipe No. 1 and pipe No. 2 are moved along the longitudinal direction of the pit to the rear end of the pit. The two clamping mechanisms on pipe No. 1 are moved to pipe No. 2, and the first electromagnets of the two clamping mechanisms are powered off. The two clamping mechanisms clamp pipe No. 2. During the process of the two clamping mechanisms on pipe No. 1 moving toward the rear end of the pit, jacks are set at the bottom of the front end and middle part of pipe No. 1 to lift pipe No. 1 and keep pipe No. 1 and pipe No. 2 coaxially. The two clamping mechanisms on pipe No. 2 are moved to the installation station of pipe No. 3, and the electric hoist is started to lift the two clamping mechanisms corresponding to pipe No. 3 upward to the height that the bottom of the fixed block is flush with the ground. The clamping mechanisms are pulled horizontally to the place where pipe No. 3 is to be placed. S8, repeating the operations S3-S4, sleeve the two clamping mechanisms on the No. 3 pipe and move the No. 3 pipe into the pit, and repeating the operation S6 to weld the butt joints of the No. 2 pipe and the No. 3 pipe; S9. Repeat operations S7 to S8 to install pipes No. 4 to No. n. After the pipes are installed, move the clamping mechanism to the rear end of the pit, lift it upward from the rear end of the pit and take it out of the pit, remove the jack at the bottom of the pipe, and lower the pipe into place.

[0011] The present invention has at least the following beneficial effects: 1. The underground pipeline installation device provided by the present invention has a simple structure and a low cost. It can quickly fix and connect the pipeline. Before moving to the pit, it can be moved smoothly and safely on the ground, ensuring construction safety. After the pipeline is moved to the pit, the device can be conveniently and quickly removed from the pipeline, greatly improving construction efficiency. 2. The present invention further provides a sleeve rotatably arranged in the through hole of the fixed block through a bearing, and the clamping block is arranged on the inner wall of the sleeve through a first telescopic rod. The sleeve can rotate relative to the fixed block around the axis of the pipeline. When welding the butt joints of two pipelines, the pipeline can be rotated relative to the fixed block, and the annular butt joint can be rotated while welding. The part to be welded can be rotated to the top, which is convenient for welding by welding operators. 3. The present invention can realize automatic clamping and connection of multiple clamping blocks to the pipeline by setting the first electromagnet and the first iron block in cooperation with the first spring, and automatically disassemble the clamping mechanism from the pipeline, with a simple structure and convenient operation.

[0012] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a structural schematic diagram of an underground pipeline installation device in a technical solution of the present invention in a state of pulling the pipeline horizontally; Figure 2 It is a structural schematic diagram of the underground pipeline installation device described in another technical solution of the present invention in a state where the pipeline is pulled to the top of the pit; Figure 3 It is a structural schematic diagram of the underground pipeline installation device described in another technical solution of the present invention in a state where the pipeline is lowered into a pit; Figure 4 It is a structural schematic diagram of a clamping mechanism in another technical solution of the present invention; Figure 5 for Figure 4 A partial enlarged view of middle A; Figure 6 for Figure 4 A partial enlarged view of B in the middle; Figure 7 A pipeline installation construction state diagram in another technical solution of the present invention; Figure 8 for Figure 7 A partial enlarged view of C in the middle.

[0014] Explanation of the reference numerals: 1-pit; 21-base; 22-support rod; 3-electric hoist; 4-clamping mechanism; 41-fixed block; 411-lifting ear; 412-roller; 42-clamping block; 43-first telescopic rod; 431-first rod body; 432-second rod body; 433-first electromagnet; 434-first iron block; 44-first spring; 45-sleeve; 46-bearing; 461-inner ring; 462-outer ring; 47-second telescopic rod; 471-fixed cylinder; 472-limiting rod; 473-second spring; 474-second iron block; 475-second electromagnet; 5-pipeline. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0016] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0017] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified.

[0018] In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0019] like Figures 1 to 8 As shown, the present invention provides an underground pipeline installation device, which includes: A support frame is arranged on the ground and is located at one side of the pit 1 where the pipeline 5 is to be installed; A plurality of electric hoists 3 are arranged on the support frame at intervals along the longitudinal direction of the pit 1, and each electric hoist 3 is slidably arranged on the support frame along the longitudinal direction of the pit 1; Multiple clamping mechanisms 4, each electric hoist 3 is correspondingly provided with a clamping mechanism 4, and each pipeline 5 to be installed is correspondingly provided with two clamping mechanisms 4 during the installation process, each clamping mechanism 4 is used to be sleeved on the circumferential side of the corresponding pipeline 5 to be installed, and each clamping mechanism 4 includes: The fixing block 41 is a cubic structure. A circular through hole is provided in the middle of the fixing block 41 for the pipe 5 to be installed to pass through. A roller 412 is provided at the bottom of the fixing block 41, and a lifting lug 411 connected to the hook of the corresponding electric hoist 3 is provided at the top. A plurality of clamping blocks 42 are arranged at intervals along the circumferential direction between the through hole and the pipe 5 to be installed. Each clamping block 42 is an arc-shaped structure adapted to the circumferential side of the pipe 5 to be installed. The convex surface of the clamping block at the bottom is connected to the inner wall of the through hole through a vertically arranged support seat, and the convex surface of each remaining clamping block 42 is connected to the inner wall of the through hole through a first telescopic rod 43, and the first telescopic rod 43 is extended and retracted along the radial direction of the pipe 5.

[0020] In the above technical scheme, the present invention provides an underground pipeline 5 installation device for laying a pipeline 5 in an underground pit 1, which includes a support frame arranged on one side of the pit 1 where the pipeline 5 is to be installed, and includes a base 21 arranged on the ground and a support rod 22 arranged on the base 21, the support rod 22 is located above the pit 1, and a plurality of electric hoists 3 are arranged on the support rod 22 along the longitudinal interval of the pit 1 (the direction of laying the pipeline 5 is the longitudinal direction, and the direction perpendicular to the longitudinal direction is the transverse direction), and the main body of the electric hoist 3 is slidably arranged on the support rod 22 along the longitudinal direction of the pit 1; a pair of clamping mechanisms 4 are correspondingly arranged for each pipeline 5, and each clamp The holding mechanism 4 is used to clamp and fix the circumferential side of the pipe 5. A clamping mechanism 4 is correspondingly arranged on the circumferential side of each pipe 5 near its two ends. Each clamping mechanism 4 includes a fixing block 41, which is a cubic structure. A through hole is penetrated in the middle of the fixing block 41, which is used for the pipe 5 to pass through. A plurality of rollers 412 are arranged at the bottom of the fixing block 41, so that the fixing block 41 can move in any direction on the ground. A lifting ear 411 is arranged on the fixing block 41, which is used to connect with the hook of an electric hoist 3; a plurality of clamping blocks 42 (accurate) are arranged between the inner wall of the through hole of the fixing block 41 and the circumferential side of the pipe 5. It is said that a plurality of clamping blocks 42 are arranged at intervals along the circumferential direction on the side wall of the through hole of the fixed block 41), and the clamping block at the bottom is connected to the inner wall of the through hole through a vertically arranged support seat. The support seat with a rigid structure can provide load support for a pipe with a certain weight. Preferably, the support seat is arranged to have a structure that can be telescopically extended up and down to ensure that when the pipe is inserted between the plurality of clamping blocks, the axis of the pipe passes through the center of the through hole. Each of the remaining clamping blocks 42 is connected to the side wall of the through hole through a first telescopic rod 43. The first telescopic rod 43 is extended and retracted along the radial direction of the pipe 5, thereby driving the clamping block 42 to move radially along the pipe 5. The clamping block 42 is in contact with the pipe 5. The arc-shaped structure is adapted to the circumferential side surface, and the clamping block 42 can be sealed and abutted against the circumferential side surface of the pipe 5. The abutment of multiple clamping blocks 42 against the circumferential side surface of the pipe 5 realizes the fixed connection between the clamping mechanism 4 and the pipe 5; the clamping mechanism 4 provided by the present invention can walk on the ground, which is convenient to move and easy to quickly install and connect with the pipe 5. It is connected with the lifting ear 411 through the hook of the electric hoist. The electric hoist 3 is started to pull the pipe 5 on the ground to the vicinity of the pit 1. After adjusting the longitudinal position of the pipe 5, the pipe 5 is continued to move horizontally to the top of the pit 1, and then the pipe 5 is lowered into the pit 1 under the action of the electric hoist 3.

[0021] The underground pipeline 5 installation device provided by the present invention has a simple structure and a low cost. It can be quickly fixedly connected to the pipeline 5. Before moving to the pit 1, it can be moved smoothly and safely on the ground, ensuring construction safety. After the pipeline 5 is moved into the pit 1, the device can be conveniently and quickly removed from the pipeline 5, greatly improving construction efficiency.

[0022] In the actual construction process, it is preferred that four electric hoists 3 are provided, two of which form a pair, that is, two pairs of electric hoists 3 are provided, and two pairs (four) of clamping mechanisms 4 are correspondingly provided, each clamping mechanism 4 corresponds to one electric hoist 3, one pair of clamping mechanisms 4 fixes one pipe 5, and after the pipe 5 is moved into the pit 1 under the action of the corresponding one pair of electric hoists 3, the next pipe 5 is fixed by the other pair of clamping mechanisms 4 and moved into the pit 1 under the action of the corresponding other pair of electric hoists 3, and the two pipes 5 are butt-jointed, and the butt joints are welded. After the two pipes 5 are connected, the first telescopic rods 43 of one pair of clamping mechanisms 4 and the other pair of clamping mechanisms 4 are subsequently retracted to release the clamping and fixing of the previous pipe 5 by one pair of clamping mechanisms 4, and the clamping and fixing of the next pipe 5 by the other pair of clamping mechanisms 4 are released, and the two pairs of clamping mechanisms 4 are moved along the longitudinal direction of the pit 1 toward the rear end of the pit 1 (from the front to the back in the direction of laying of the pipe 5, which becomes the front end and the rear end of the pit 1), so that the other pair of clamping mechanisms 4 are detached from the next pipe 5 , one pair of clamping mechanisms 4 moves to the circumferential side of the next pipe 5. During this process, a jack can be set at the bottom of the previous pipe 5 to prevent the previous pipe 5 from falling to the bottom of the pit 1 under the action of gravity at the moment when the clamping mechanism 4 is separated from the pipe 5, causing the next pipe 5 to tilt and affecting the docking and welding operations of the next pipe 5 and the next pipe 5; under the action of the electric hoist 3, the other pair of clamping mechanisms 4 is lifted up from the pit 1 to the ground height, and the construction workers use another pair of clamping mechanisms 4 to fix the next pipe 5 along the horizontal direction toward the other side of the pit 1 (the position where the pipe 5 is placed), and move it into the pit 1 under the action of the electric hoist 3, and the next pipe 5 is docked and welded with the next pipe 5; repeat the operation to complete the movement, lowering and installation of other pipes 5. After the installation of the last pipe 5 is completed, the two pairs of clamping mechanisms 4 are moved toward the rear end of the pit 1 to separate from the pipe 5, and under the action of the electric hoist 3, the two pairs of clamping mechanisms 4 are lifted up and taken out of the pit 1.

[0023] In another technical solution, in the underground pipeline installation device, each clamping mechanism 4 further includes a sleeve 45, which is arranged between the inner wall of the through hole and the plurality of clamping blocks 42. The sleeve 45 is rotatably connected to the inner wall of the through hole through a bearing 46. One end of the first telescopic rod 43 corresponding to each clamping block 42 is connected to the inner wall of the sleeve 45, and the other end is connected to the convex surface of the corresponding clamping block 42. The present invention further rotatably arranges the sleeve 45 in the through hole of the fixed block 41 through a bearing 46, and the clamping block 42 is arranged on the inner wall of the sleeve 45 through the first telescopic rod 43. The sleeve 45 can rotate around the axis of the pipe 5 relative to the fixed block 41. When the two pipes 5 are welded to the seam, the pipe 5 can be rotated relative to the fixed block 41, and the part to be welded can be rotated to the top, which is convenient for welding by welding workers.

[0024] In another technical solution, in the underground pipeline installation device, a ball is embedded and rolled on the concave surface of the clamping block at the bottom, and an elastic rubber pad is laid on the concave surface of each of the remaining clamping blocks 42 except the bottom clamping block. A plurality of ball bearings are embedded and rolled on the concave surface of the clamping block at the bottom to reduce the friction between the bottom of the pipeline and the concave surface of the clamping block at the bottom when the pipeline is inserted between the plurality of clamping blocks, so as to facilitate the rapid insertion of the pipeline into the clamping mechanism and improve the work efficiency. An elastic rubber pad is laid on the concave surface of the remaining clamping blocks 42 to avoid friction damage to the side wall of the pipeline 5 caused by direct hard contact between the clamping blocks 42 and the pipeline 5, and at the same time, the stability of the clamping of the side of the pipeline 5 by the clamping blocks 42 can be improved.

[0025] In another technical solution, in the underground pipeline installation device, each first telescopic rod 43 is sleeved with a first spring 44, one end of which is connected to the inner wall of the sleeve 45, and the other end extends radially and is connected to the convex surface of the clamping block 42. The compressible first spring 44 is sleeved on the first telescopic rod 43, which can further improve the stability of the clamping block 42 to clamp and fix the side of the pipeline 5.

[0026] In another technical solution, in the underground pipeline installation device, each first telescopic rod 43 includes a first rod body 431 and a second rod body 432 which are slidably sleeved inside and outside, one end of the second rod body 432 is fixedly connected to the inner wall of the sleeve 45, a first electromagnet 433 is arranged inside the second rod body 432, one end of the first rod body 431 passes through the other end of the second rod body 432 and is inserted into the second rod body 432, and a first iron block 434 adapted to the first electromagnet 433 is arranged, and the other end of the first rod body 431 is connected to the convex surface of the corresponding clamping block 42; The first spring 44 and the first electromagnet 433 are configured as follows: when the first electromagnet 433 is energized, the first iron block 434 moves toward the direction close to the sleeve 45 under the adsorption action of the first electromagnet 433, thereby driving the clamping block 42 to move toward the direction close to the sleeve 45, the first telescopic rod 43 is shortened, the first spring 44 is compressed, and the spatial dimension of the circular structure formed by the multiple clamping blocks 42 is maximized; when the first electromagnet 433 is de-energized, the first electromagnet 433 releases the adsorption of the first iron block 434, and under the action of the first spring 44, the first telescopic rod 43 is extended to push the clamping block 42 toward the direction away from the sleeve 45, and the spatial dimension of the circular structure formed by the multiple clamping blocks 42 becomes smaller.

[0027] In the above technical scheme, the present invention further discloses a method for implementing the telescopic movement of the first telescopic rod 43. Specifically, the first telescopic rod 43 is configured as a first rod body 431 and a second rod body 432 which are arranged inside and outside the sleeve. One end of the second rod body 432 is fixedly connected to the inner wall of the sleeve 45, and the other end is slidably connected to one end of the first rod body 431 along the axial direction of the first telescopic rod 43. The other end of the first rod body 431 is connected to the convex surface of the clamping block 42. At the same time, a first electromagnet 433 is arranged at a position near one end of the second rod body 432, and a first iron block 434 adapted to the first electromagnet 433 is arranged at one end of the first rod body 431. When the first electromagnet 433 is energized , the first iron block 434 moves radially toward the direction close to the sleeve 45 under the magnetic adsorption of the first electromagnet 433, thereby driving the first telescopic rod 43 to contract, the first spring 44 is compressed, and the space size of the circular structure formed by the multiple clamping blocks 42 is the largest (greater than the diameter of the pipe 5). When the clamping mechanism 4 is moved to the circumferential side of the pipe 5, the first electromagnet 433 is powered off, releasing the magnetic adsorption force on the first iron block 434. Under the action of the first spring 44, the first telescopic rod 43 extends, and the clamping block 42 moves radially toward the side of the pipe 5. The concave surface of the clamping block 42 is sealed and abutted against the side of the pipe 5, thereby clamping and fixing the pipe 5. The first electromagnet 433 and the first iron block 434 are provided, and the first spring 44 is cooperated to realize the automatic clamping connection of the multiple clamping blocks 42 to the pipe 5, and the clamping mechanism 4 is automatically disassembled from the pipe 5. The structure is simple and the operation is convenient.

[0028] In another technical solution, in the underground pipeline installation device, a plurality of second telescopic rods 47 are provided on the outer wall of the inner ring 461 of the bearing 46, and the second telescopic rod 47 includes a fixed cylinder 471 extending radially along the bearing 46 and a limit rod 472 with one end sliding radially along the bearing 46 with the inner wall of the fixed cylinder 471, one end of the limit rod 472 is connected to the inner wall of the fixed cylinder 471 through a second spring 473, and the other end of the limit rod 472 is provided with a second iron block 474, and a second electromagnet 475 adapted to the second iron block 474 is provided on the inner wall of the outer ring 462 of the bearing 46; The second spring 473 and the second electromagnet 475 are configured as follows: when the second electromagnet 475 is energized, the second iron block 474 is adsorbed on the second electromagnet 475, and the inner ring 461 and the outer ring 462 of the bearing 46 are relatively fixed, thereby temporarily fixing the sleeve 45 and the fixed block 41 relatively; when the second electromagnet 475 is de-energized, the second electromagnet 475 releases the adsorption of the second iron block 474, and the inner ring 461 and the outer ring 462 of the bearing 46 are released from relative fixation, and the sleeve 45 can rotate in a circle around the axis of the sleeve 45 relative to the fixed block 41.

[0029] In the above technical solution, the present invention further arranges a second telescopic rod 47 on the outer wall of the inner ring 461 of the bearing 46, each second telescopic rod 47 comprises a fixed cylinder 471 and a limiting rod 472 extending in the radial direction, one end of the limiting rod 472 is connected to the inner wall of the fixed cylinder 471 through a second spring 473, and the other end is provided with a second iron block 474, and a second electromagnet 475 corresponding to the second iron block 474 is arranged on the inner wall of the outer ring 462 of the bearing 46, when the second electromagnet 475 is energized, the second electromagnet 475 generates a magnetic adsorption force on the second iron block 474, and the second iron block 474 is adsorbed on the second electromagnet 475, that is, the second telescopic rod 47 temporarily fixes and connects the inner ring 461 and the outer ring 462, and the inner ring 461 and the outer ring 462 are connected. 62 cannot rotate relative to each other, thereby fixing the sleeve 45 and the fixed block 41 relatively, and the sleeve 45 will not move relative to the fixed block 41. When there is no need to rotate the pipeline 5 relative to the fixed block 41, the second electromagnet 475 can be energized to position the pipeline 5 and the fixed block 41 relatively to avoid the pipeline 5 rotating at will relative to the fixed block 41 during the movement of the pipeline 5, thereby affecting the normal construction; when the two pipelines 5 are docked in the pit 1 and the docking seam welding is required, the second electromagnet 475 is powered off, and the second iron block 474 moves radially under the action of the second spring 473, and the inner ring 461 and the outer ring 462 are released from the relatively fixed connection, and the inner ring 461 and the outer ring 462 can rotate relative to each other, and the sleeve 45 can rotate relative to the fixed block 41, thereby driving the pipeline 5 to rotate.

[0030] The present invention also provides a construction method of the underground pipeline installation device, which comprises: S1, a support frame is set up on one side of the pit 1 where the pipe 5 is to be installed, and a plurality of electric hoists 3 are arranged on the support frame at intervals along the longitudinal direction of the pit 1, and each electric hoist 3 is slidably connected to the support frame along the longitudinal direction of the pit 1; S2, transport the pipe 5 to be installed to the other side of the pipe 5 pit 1, the axis of the pipe 5 extends along the longitudinal direction of the pit 1, and the pipes 5 are numbered 1 to n in the longitudinal direction of the pit 1; S3. A cushion block is arranged at the bottom of the No. 1 pipeline near the middle so that both ends of the pipeline are suspended in the air, and a clamping mechanism 4 is respectively sleeved at both ends of the No. 1 pipeline. Specifically, before each clamping mechanism 4 is sleeved on the pipeline, all the first electromagnets 433 are energized, all the second electromagnets 475 are energized, and the space size of the circular structure formed by the multiple clamping blocks 42 is larger than the size of the pipeline. The square frame is pushed to the end of the pipeline, and the axis of the pipeline and the axis of the sleeve 45 are located on the same line. The height of the support seat is adjusted so that the concave surface of the clamping block at the bottom corresponds to the concave surface of the bottom of the pipeline in the axial direction, and the clamping mechanism 4 is moved in the direction close to the pipeline. The end of the pipeline passes through the space of the circular structure surrounded by the multiple clamping blocks 42, and the bottom of the pipeline is placed on the concave surface of the clamping block at the bottom. Then, all the first electromagnets 433 are de-energized, and the clamping block 42 moves in the direction close to the circumferential side of the pipeline under the action of the first spring 44, and the multiple clamping blocks 42 abut against the circumferential side wall of the pipeline. S4, connect the lifting lug 411 on each fixing block 41 sleeved on each No. 1 pipe with the hook of an electric hoist 3, at this time, the electric hoist 3 and the corresponding clamping mechanism are arranged in correspondence along the horizontal direction, start the two electric hoists 3 corresponding to the No. 1 pipe, pull the No. 1 pipe toward the direction close to the pit 1 to the top of the pit 1, and then start the electric hoist 3 again to lower the No. 1 pipe and the two clamping mechanisms 4 thereon into the pit 1; S5, repeating operations S2 to S4, moving pipe No. 2 into pit 1, and docking the adjacent ends of pipe No. 1 with pipe No. 2; S6. Weld the butt joints of pipes No. 1 and No. 2 using an electric welding device. During the welding process, the second electromagnet 475 is powered off, so that the sleeve 45 and the relative fixed block 41 rotate, thereby driving the pipes to rotate, and rotating the butt joints of the two pipes to the working position; S7, after the butt welding of pipe No. 1 and pipe No. 2 is completed, the first electromagnet 433 is energized, the clamping blocks 42 on pipe No. 1 and pipe No. 2 release the clamping of the pipes, and then the clamping mechanisms 4 on pipe No. 1 and pipe No. 2 are moved toward the rear end of pit 1 along the longitudinal direction of pit 1, the two clamping mechanisms 4 on pipe No. 1 are moved to pipe No. 2, and the first electromagnet 433 of the two clamping mechanisms 4 is powered off, the two clamping mechanisms 4 clamp pipe No. 2, and in the process of the two clamping mechanisms 4 on pipe No. 1 moving toward the rear end of pit 1, jacks are set at the bottom of the front end and middle part of pipe No. 1 to lift pipe No. 1 and keep pipe No. 1 and pipe No. 2 coaxial; the two clamping mechanisms 4 on pipe No. 2 are moved to the installation station of pipe No. 3, the electric hoist 3 is started to lift the two clamping mechanisms 4 corresponding to pipe No. 3 upward to the height that the bottom of the fixed block 41 is flush with the ground, and the clamping mechanisms 4 are pulled horizontally to the place where pipe No. 3 is to be placed; S8, repeating the operations S3 and S4, sleeve the two clamping mechanisms 4 on the No. 3 pipe and move the No. 3 pipe into the pit 1, and repeating the operation S6 to weld the butt joints of the No. 2 pipe and the No. 3 pipe; S9, repeat operations S7~S8 to install pipes 4~n. After the pipes are installed, move the clamping mechanism 4 to the rear end of the pit 1, and lift it upward from the rear end of the pit 1 to take it out of the pit 1, remove the jack at the bottom of the pipe, and lower the pipe into place.

[0031] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be obvious to those skilled in the art.

[0032] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An underground pipeline installation device, characterized in that: include: A support frame is provided on the ground and is located on one side of the pit where the pipeline is to be installed; A plurality of electric hoists are arranged on the support frame at intervals along the longitudinal direction of the pit, and each electric hoist is slidably arranged on the support frame along the longitudinal direction of the pit; Multiple clamping mechanisms, one clamping mechanism is correspondingly provided for each electric hoist, and two clamping mechanisms are correspondingly provided for each pipe to be installed during the installation process, each clamping mechanism is used to be sleeved on the circumferential side of the corresponding pipe to be installed, and each clamping mechanism includes: The fixing block is a cubic structure, with a circular through hole in the middle for the pipe to be installed to pass through, a roller at the bottom of the fixing block, and a lifting lug at the top for connecting with the hook of the corresponding electric hoist; A plurality of clamping blocks are arranged at intervals along the circumferential direction between the through hole and the pipe to be installed. Each clamping block is an arc-shaped structure adapted to the circumferential side of the pipe to be installed. The convex surface of the clamping block at the bottom is connected to the inner wall of the through hole through a vertically arranged support seat, and the convex surface of each remaining clamping block is connected to the inner wall of the through hole through a first telescopic rod, and the first telescopic rod is extended and retracted along the radial direction of the pipe.

2. The underground pipeline installation device according to claim 1, characterized in that: Each clamping mechanism also includes a sleeve, which is arranged between the through hole and the multiple clamping blocks. The sleeve is rotatably connected to the inner wall of the through hole through a bearing. One end of the first telescopic rod corresponding to each clamping block is connected to the inner wall of the sleeve, and the other end is connected to the convex surface of the corresponding clamping block.

3. The underground pipeline installation device according to claim 2, characterized in that: A ball is embedded and rolled on the concave surface of the clamping block at the bottom, and an elastic rubber pad is laid on the concave surface of each clamping block except the bottom clamping block.

4. The underground pipeline installation device according to claim 3, characterized in that: A first spring is sleeved on each first telescopic rod, one end of which is connected to the inner wall of the sleeve, and the other end of which extends radially and is connected to the convex surface of the clamping block.

5. The underground pipeline installation device according to claim 4, characterized in that: Each first telescopic rod comprises a first rod body and a second rod body which are slidably sleeved inside and outside, one end of the second rod body is fixedly connected to the inner wall of the sleeve, a first electromagnet is arranged inside the second rod body, one end of the first rod body passes through the other end of the second rod body and is inserted into the second rod body, and a first iron block adapted to the first electromagnet is arranged, and the other end of the first rod body is connected to the convex surface of the corresponding clamping block; The first spring and the first electromagnet are configured as follows: when the first electromagnet is powered on, the first iron block moves toward the direction close to the sleeve under the adsorption action of the first electromagnet, thereby driving the clamping block to move toward the direction close to the sleeve, the first telescopic rod is shortened, the first spring is compressed, and the spatial size of the circular structure formed by the multiple clamping blocks is maximized; when the first electromagnet is powered off, the first electromagnet releases the adsorption of the first iron block, and under the action of the first spring, the first telescopic rod is extended to push the clamping block toward the direction away from the sleeve, and the spatial size of the circular structure formed by the multiple clamping blocks becomes smaller.

6. The underground pipeline installation device according to claim 5, characterized in that: A plurality of second telescopic rods are arranged on the outer wall of the inner ring of the bearing, and the second telescopic rods include a fixed cylinder extending in the radial direction of the bearing and a limit rod with one end sliding with the inner wall of the fixed cylinder in the radial direction of the bearing, one end of the limit rod is connected to the inner wall of the fixed cylinder through a second spring, and the other end of the limit rod is provided with a second iron block, and a second electromagnet adapted to the second iron block is arranged on the inner wall of the outer ring of the bearing; The second spring and the second electromagnet are configured such that when the second electromagnet is powered on, the second iron block is adsorbed on the second electromagnet, the inner ring and the outer ring of the bearing are relatively fixed, and the sleeve and the fixed block are temporarily relatively fixed; when the second electromagnet is powered off, the second electromagnet releases the adsorption of the second iron block, the inner ring and the outer ring of the bearing are released from relative fixation, and the sleeve can rotate in a circle around the axis of the sleeve relative to the fixed block.

7. The construction method of the underground pipeline installation device according to claim 6, characterized in that: include: S1. A support frame is set up on one side of the pit where the pipe is to be installed, and a plurality of electric hoists are arranged on the support frame at intervals along the longitudinal direction of the pit, and each electric hoist is slidably connected to the support frame along the longitudinal direction of the pit; S2. Transport the pipeline to be installed to the other side of the pipeline pit, with the axis of the pipeline extending in the longitudinal direction of the pit, and number the pipelines 1 to n in the longitudinal direction of the pit; S3. A cushion block is arranged at the bottom of the No. 1 pipeline near the middle so that both ends of the pipeline are suspended in the air, and a clamping mechanism is respectively sleeved at both ends of the No. 1 pipeline. Specifically, before each clamping mechanism is sleeved on the pipeline, all the first electromagnets are energized, all the second electromagnets are energized, and the space size of the circular structure formed by the multiple clamping blocks is larger than the size of the pipeline. The square frame is pushed to the end of the pipeline, and the axis of the pipeline and the axis of the sleeve are located on the same line. The clamping mechanism is moved in the direction close to the pipeline, and the end of the pipeline passes through the space of the circular structure surrounded by the multiple clamping blocks. Then, all the first electromagnets are de-energized, and the clamping blocks are moved in the direction close to the circumferential side of the pipeline under the action of the first spring, and the multiple clamping blocks are in contact with the circumferential side wall of the pipeline; S4, connect the lifting lugs on each fixed block set on each No. 1 pipe to the hook of an electric hoist, at this time, the electric hoist and the corresponding square frame are arranged in correspondence with each other in the horizontal direction, start the two electric hoists corresponding to the No. 1 pipe, pull the No. 1 pipe toward the direction close to the pit to the top of the pit, and then start the electric hoist again to lower the No. 1 pipe and the two clamping mechanisms thereon into the pit; S5. Repeat operations S2 to S4 to move pipe No. 2 into the pit and connect the adjacent ends of pipe No. 1 and pipe No. 2; S6. Welding the butt joints of pipes No. 1 and No. 2 by using an electric welding device. During the welding process, the second electromagnet is powered off, so that the sleeve and the relatively fixed block rotate, thereby driving the pipes to rotate, and rotating the butt joints of the two pipes to the working position; S7. After the butt welding of pipe No. 1 and pipe No. 2 is completed, the first electromagnet is energized, and the clamping blocks on pipe No. 1 and pipe No. 2 release the clamping of the pipes, and then the clamping mechanisms on pipe No. 1 and pipe No. 2 are moved along the longitudinal direction of the pit to the rear end of the pit, and the two clamping mechanisms on pipe No. 1 are moved to pipe No. 2, and the first electromagnets of the two clamping mechanisms are powered off. The two clamping mechanisms clamp pipe No.

2. During the process of the two clamping mechanisms on pipe No. 1 moving toward the rear end of the pit, jacks are set at the bottom of the front end and middle part of pipe No. 1 to lift pipe No. 1 and keep pipe No. 1 and pipe No. 2 coaxially; the two clamping mechanisms on pipe No. 2 are moved to the installation station of pipe No. 3, and the electric hoist is started to lift the two clamping mechanisms corresponding to pipe No. 3 upward to the height that the bottom of the fixed block is flush with the ground, and the clamping mechanisms are pulled horizontally to the place where pipe No. 3 is to be placed; S8, repeating the operations S3-S4, sleeve the two clamping mechanisms on the No. 3 pipe and move the No. 3 pipe into the pit, and repeating the operation S6 to weld the butt joints of the No. 2 pipe and the No. 3 pipe; S9. Repeat operations S7 to S8 to install pipes No. 4 to No. n. After the pipes are installed, move the clamping mechanism to the rear end of the pit, lift it upward from the rear end of the pit and take it out of the pit, remove the jack at the bottom of the pipe, and lower the pipe into place.

Images