A large-diameter PCCP pipeline joint treatment construction platform

Abstract

The present invention relates to a pipeline construction operation platform, and specifically to a large-diameter PCCP pipeline joint processing construction platform, comprising a rotating support frame, an arc-shaped support frame, a top guardrail, a bolt connector, a steel plate platform frame and an adaptive walking base, wherein the arc-shaped support frame is placed on the outside of the PCCP pipeline, the rotating support frame is movably installed at the bottom of the arc-shaped support frame through a pipe connector, a top guardrail is welded to the outside of the upper part of the arc-shaped support frame, the middle part of the top guardrail is fixedly connected by a bolt connector, a steel plate platform frame is welded to the top of the arc-shaped support frame, and a top steel plate body is tied to the upper part of the steel plate platform frame. The operation platform of the present invention can be divided into multiple pieces for welding, and assembled and connected by bolts after welding. The manufacturing method is simple and the installation is easy. The top is placed on the installed pipeline, and the lower part is supported on the first-phase concrete base of the pipeline, and the support stability is good.

Description

Technical Field

[0001] The invention relates to a pipeline construction operation platform, in particular to a large-diameter PCCP pipeline joint processing construction platform. Background Art

[0002] In the construction of large-scale water resource allocation projects, the PCCP buried pipe sections of pipeline projects are laid over long distances and have large pipe diameter spans. The pipes are usually connected by sockets. The pipe interface gaps must be grouted and anti-corrosion treated later. After the pipeline is installed, the pipe top height reaches 2.9m-3.8m, which is a high-altitude operation. Each section of the pipeline is 6m long, with a large number of joints. It is not convenient for operators to perform joint treatment operations on the top of the pipe. After the construction workers complete the joint treatment, they can perform subsequent backfilling operations. Therefore, it is very important to improve the efficiency of joint treatment. In the traditional method, gantry scaffolding is set on both sides of the pipeline, and scaffolding boards are laid as joint treatment operation platforms. However, the foundation pits on both sides of the pipeline are narrow and the construction lines are long. The gantry scaffolding is not only difficult to place stably, but also difficult to move frequently. In addition, after the scaffolding is erected, it is affected by the pipeline and is close to 1.5m from the grouting port on the top of the pipe. Steel pipes and scaffolding boards need to be set up before joint operations can be performed, which results in a long time for joint operations and affects the subsequent foundation pit backfilling operations. In addition, the width of the interface gap is only 10mm-25mm, and it is difficult to accurately deliver the grouting into the gap, which easily causes waste of expansion mortar. In order to speed up the construction progress, reduce mortar waste, and ensure operation safety, a joint processing operation platform with stable support, easy installation, and convenient for frequent movement and grouting is urgently needed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a large-diameter PCCP pipeline joint processing construction platform in view of the shortcomings of the existing technology. The platform can be divided into multiple welded structures, which can be assembled and overlapped by bolts after welding, and can be moved without disassembly. The manufacturing and installation method is simple. Through the segmented splicing structure and the local deformation structure, stable static support and convenient dynamic movement are achieved. It is very suitable for large-diameter PCCP pipeline joint processing operations.

[0004] The technical problem to be solved by the present invention is achieved through the following technical solutions. The present invention discloses a large-diameter PCCP pipeline joint processing construction platform, including a rotating support frame, an arc-shaped support frame, a top guardrail, a bolt connector, a steel plate platform frame and an adaptive walking base. The arc-shaped support frame and the steel plate platform frame are both obtained by prefabrication and welding. The arc-shaped support frame is symmetrically placed on the outside of the PCCP pipeline. A plug connector is provided on the top of the rotating support frame. The rotating support frame is rotatably installed on the bottom of the arc-shaped support frame through the plug connector. Top guardrails are welded on the outer side of the upper part of the arc-shaped support frame, and the top guardrails on both sides are fixedly connected by a bolt connector. A steel plate platform frame is welded on the top of the arc-shaped support frame, a top steel plate body is tied on the upper part of the steel plate platform frame, and a grouting funnel is welded on the side of the top steel plate body. An adaptive walking base is provided at the bottom of the rotating support frame, and the adaptive walking base realizes self-locking support and autonomous walking through lateral offset and longitudinal creeping.

[0005] Furthermore, the rotating support skeleton includes an inner ladder frame, an outer ladder frame and a transverse buckle plate, the inner ladder frame and the outer ladder frame are ladder structures with ladder frame transverse axes spaced apart, the inner ladder frame and the outer ladder frame are parallel to each other and the bottoms are rotatably connected to the adaptive walking base, the left and right sides of the transverse buckle plate are provided with buckle joints, the buckle joints include hooks, the inner ladder frame and the outer ladder frame are rotatably connected between the corresponding ladder frame transverse axes through the hooks, the inner ladder frame and the outer ladder frame are provided with a pipe connector at the top, the bottom of the arc-shaped support skeleton is rotatably connected with an auxiliary deflection support plate, the outer frame is correspondingly provided with a plurality of support slots, and the auxiliary deflection support plate is used to progressively contact and support the lateral offset movement of the rotating support skeleton.

[0006] Furthermore, the insert tube connector includes an outer tube and an inner insert tube, the outer tube is longitudinally welded to the bottom of the arc-shaped support frame, the rear sides of the inner ladder frame and the outer ladder frame are configured as welding ends, the inner insert tube is longitudinally welded to the welding ends to form a right-angle tube structure, the front sides of the inner ladder frame and the outer ladder frame are configured as supporting ends for contacting the outer tube, and a fixed cross bar is welded between the outer tubes on the left and right sides of the bottom of the arc-shaped support frame.

[0007] Furthermore, the lateral space formed between the inner ladder frame, the outer ladder frame and the transverse gusset plate is used to insert Type I plug-in boxes and Type II plug-in boxes in different states. Type I plug-in boxes correspond to the working state during longitudinal movement operation, and Type II plug-in boxes correspond to the working state during transverse locking normal construction operation. Diagonal reinforcement rods are welded inside Type I plug-in boxes and Type II plug-in boxes.

[0008] Furthermore, the adaptive walking base includes a rubber base, self-locking floating wheels and a crawling mechanism. The bottom of the rubber base is provided with anti-slip rubber, and self-locking floating wheels are installed on the left and right sides of the rubber base. The crawling mechanism is embedded in the middle of the rubber base, and the crawling mechanism is used for autonomous longitudinal crawling and displacement.

[0009] Furthermore, the self-locking floating wheel is provided with a floating deflection wheel frame, through which the self-locking floating wheel is rotatably connected to the rubber base, an elastic element is connected between the floating deflection wheel frame and the side of the rubber base, and the outer side of the rim of the self-locking floating wheel is provided with longitudinally extending transverse stripes.

[0010] Furthermore, the crawling mechanism includes a crawling wheel, a worm gear driving mechanism and a reduction motor device. The crawling wheel is provided with a coaxial gear, which is connected through a worm gear driving connection in the worm gear driving mechanism. The end output shaft of the reduction motor device is connected to a worm gear meshing with the worm wheel to realize self-locking drive.

[0011] Furthermore, the PCCP pipeline is installed on the upper part of the first-phase concrete base through two groups of symmetrically arranged concrete pads. The concrete pads are arranged at intervals along the length direction of the PCCP pipeline, and the longitudinal walking construction section of the adaptive walking base corresponds to the position of the concrete pads.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] (1) The operating platform of the present invention can be divided into multiple pieces for welding, and then assembled and connected by bolts after welding. The manufacturing method is simple and the installation is easy. The top is placed on the installed pipeline, and the lower part is supported on the first-phase concrete base of the pipeline. The support stability is good, and it is very suitable for large-diameter PCCP pipeline joint processing operations;

[0014] (2) After each joint is constructed, the present invention adjusts the deflection of the rotating support frame so that the top of the platform is slightly suspended above the pipe, and then moves longitudinally to the next pipe joint on the first-stage concrete base through the bottom crawling wheel to continue the operation, thereby avoiding the difficulty of moving the skeleton platform and frequent disassembly and assembly, and effectively shortening the cycle operation time;

[0015] (2) The present invention provides a detachable and deflectable lower rotating support frame with an adaptive walking base, which can be quickly operated and switched among the three states of installation welding adjustment state, static construction working state and longitudinal displacement state. The operation is flexible and can be adjusted according to actual construction conditions. In addition, the self-locking structure has good safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional schematic diagram of the overall operating platform of the present invention;

[0017] Figure 2It is a side schematic diagram of the overall operating platform of the present invention;

[0018] Figure 3 It is a schematic structural diagram of the rotating support frame 1 of the present invention;

[0019] Figure 4 The present invention Figure 3 A partial enlarged view of position A in the middle;

[0020] Figure 5 It is a schematic structural diagram of the adaptive walking base 6 of the present invention;

[0021] Figure 6 The present invention Figure 5 A partial enlarged view of position B in the middle;

[0022] Figure 7 It is a simplified diagram of the structure of the type I plug-in box 16 and the type II plug-in box 17 of the present invention;

[0023] Figure 8 Schematic diagram of the end surface structure of the crawling wheel 63a of the present invention;

[0024] 1-rotating support frame, 11-insertion pipe connector, 111-inner insertion pipe, 111a-welding end, 111b-supporting end, 112-outer cylinder, 113-fixed cross bar, 12-inner ladder frame, 13-outer ladder frame, 131-ladder frame horizontal axis, 14-auxiliary deflection support plate, 14a-support slot, 15-cross buckle plate, 151-buckle joint, 151a-hook head, 16-type I plug-in box, 17-type II plug-in box, 2-arc support frame, 3-top guardrail, 4-bolt connector, 5-steel plate platform frame, 51-top steel plate body, 6-adaptive walking base, 61-rubber base, 62-self-locking floating wheel, 621-floating deflection wheel frame, 63-crawling mechanism, 63a-crawling wheel, 7-first phase concrete base, 71-concrete pad, 8-PCCP pipeline, 9-grouting funnel. DETAILED DESCRIPTION

[0025] like Figure 1-5As shown, the present invention discloses a large-caliber PCCP pipeline 8 joint processing construction platform, including a rotating support frame 1, an arc-shaped support frame 2, a top guardrail 3, a bolt connector 4, a steel plate platform frame 5 and an adaptive walking base 6. The PCCP pipeline 8 is installed on the upper part of the first-phase concrete base 7 through two groups of symmetrically arranged concrete pads 71. The concrete pads 71 ​​are arranged at intervals along the length direction of the PCCP pipeline 8. The longitudinal walking construction interval of the adaptive walking base 6 corresponds to the position of the concrete pads 71. The arc-shaped support frame 2 and the steel plate platform frame 5 are both obtained by prefabrication and welding. The arc-shaped support frame 2 is symmetrically placed on the outside of the PCCP pipeline 8. The rotating support frame 1 includes an inner ladder frame 12, an outer ladder frame 13 and a transverse buckle plate 15. The inner ladder frame 12 and the outer ladder frame 13 are both ladder-type structures with ladder frame transverse axes 131 arranged at intervals. The inner ladder frame 12 and the outer ladder frame 13 are parallel to each other and the bottoms are both rotatably connected to the adaptive walking base 6. The transverse buckle plate 15 is provided with buckle joints on both sides. The head 151 includes a hook head 151a. The inner ladder frame 12 and the outer ladder frame 13 are connected to each other by a hook head 151a corresponding to the ladder frame transverse axis 131. The inner ladder frame 12 and the outer ladder frame 13 are provided with a plug-in connector 11 at the top. The bottom of the arc-shaped support frame 2 is connected to an auxiliary deflection support plate 14 for rotation. The outer frame body is provided with a plurality of support slots 14a. The auxiliary deflection support plate 14 is used for progressive contact support of the lateral displacement movement of the rotating support frame 1. The lateral space formed between the inner ladder frame 12, the outer ladder frame 13 and the transverse buckle plate 15 is used for inserting the type I plug-in box 16 and the type II plug-in box 17 in different states. The type I plug-in box 16 corresponds to the working state during the longitudinal movement operation, and the type II plug-in box 17 corresponds to the working state during the transverse locking normal construction operation. The type I plug-in box 16 and the type II plug-in box 17 are welded with diagonal reinforcing rods inside.

[0026] A pipe connector 11 is provided at the top of the rotating support skeleton 1, and the rotating support skeleton 1 is rotatably installed at the bottom of the arc-shaped support skeleton 2 through the pipe connector 11. The pipe connector 11 includes an outer cylinder 112 and an inner pipe 111. The outer cylinder 112 is longitudinally welded to the bottom of the arc-shaped support skeleton 2. The rear sides of the inner ladder frame 12 and the outer ladder frame 13 are configured as welding ends 111a. The inner pipe 111 is longitudinally welded to the welding ends 111a to form a right-angle tube structure. The front sides of the inner ladder frame 12 and the outer ladder frame 13 are configured as supporting ends 111b for contacting the outer cylinder 112. A fixed cross bar 113 is welded between the outer cylinders 112 on the left and right sides of the bottom of the arc-shaped support skeleton 2.

[0027] A top guardrail 3 is welded to the outer side of the upper part of the arc-shaped support frame 2, and the top guardrails 3 on both sides are fixedly connected by a bolt connector 4. A steel plate platform frame 5 is welded to the top of the arc-shaped support frame 2, and a top steel plate body 51 is tied to the upper part of the steel plate platform frame 5. A grouting funnel 9 is welded to the outer hanging side of the top steel plate body 51. An adaptive walking base 6 is provided at the bottom of the rotating support frame 1, and the adaptive walking base 6 realizes self-locking support and autonomous walking through lateral offset and longitudinal crawling.

[0028] The structure of the adaptive walking base 6 is further described below. The adaptive walking base 6 includes a rubber base 61, a self-locking floating wheel 62 and a crawling mechanism 63. The bottom of the rubber base 61 is provided with an anti-slip rubber. The self-locking floating wheels 62 are installed on the left and right sides of the rubber base 61. The crawling mechanism 63 is embedded in the middle of the rubber base 61. The crawling mechanism 63 is used for autonomous longitudinal crawling displacement. Among them, the self-locking floating wheel 62 is provided with a floating deflection wheel frame 621. The self-locking floating wheel 62 is rotatably connected to the rubber base 61 through the floating deflection wheel frame 621. An elastic element is connected between the floating deflection wheel frame 621 and the side of the rubber base 61. The outer side of the wheel rim of the self-locking floating wheel 62 is provided with longitudinally extending horizontal stripes. Among them, the crawling mechanism 63 includes a crawling wheel 63a, a worm gear driving mechanism and a reduction motor device. The crawling wheel 63a is provided with a coaxial gear, which is connected through a worm gear driving connection in the worm gear driving mechanism. The terminal output shaft of the reduction motor device is connected to a worm meshing with the worm gear to realize self-locking drive.

[0029] During actual construction and use, after the top operating platform is prefabricated, welded and assembled, the steel plate platform frame 5 is placed on the pipeline, the arc-shaped support frame 2 is located on both sides, the top of the rotating support frame 1 is inserted into the bottom of the arc-shaped support frame 2, and the bottom of the rotating support frame 1 is placed on the first phase concrete base of the pipeline, and the cross buckle plate 15 is installed to form a parallel support, and the platform has good stability. The adaptive walking base 6 of the bottom rotating support skeleton 1 is pushed laterally. Since the horizontal stripes of the crawling wheel 63a do not affect the movement of the self-locking floating wheel 62, the self-locking floating wheel 62 is moved to the specified position in the direction of the PCCP pipeline 8 according to the pre-calculated size. At this time, the adaptive walking bases 6 on both sides are subjected to pressure from above, so that the rubber base 61 contacts the surface of the first-phase concrete base, and the gravity on both sides forms a self-locking effect. During the movement, the auxiliary deflection support plate 14 is operated for temporary support, and the type II plug-in box 17 is inserted after reaching the specified position. After the operator reaches the top of the pipe, the safety rope is hung on the safety guardrail, which effectively ensures the safety of high-altitude operations; then the joint grouting and anti-corrosion operations are started, and the slurry is directly injected into the grouting port on the top of the pipe through the grouting funnel 9, which not only greatly reduces the waste of expansion mortar caused by improper operation, but also speeds up the grouting efficiency. After each joint is constructed, the height of the lower skeleton is adjusted, that is, the adaptive walking base 6 continues to move toward the PCCP pipe 8, so that the top of the platform is slightly suspended above the pipe, and then the bottom crawling wheel 63a is controlled to move to the next pipe joint on the first-phase concrete base to continue the operation, thereby avoiding the difficulty in moving the skeleton platform and frequent disassembly and assembly, and effectively shortening the cycle operation time.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A large-diameter PCCP pipeline joint treatment construction platform, characterized by: It includes a rotating support frame, an arc-shaped support frame, a top guardrail, a bolt connector, a steel plate platform frame and an adaptive walking base. The arc-shaped support frame and the steel plate platform frame are obtained by prefabrication and welding. The arc-shaped support frame is symmetrically placed on the outside of the PCCP pipeline. A plug connector is provided on the top of the rotating support frame. The rotating support frame is rotatably installed on the bottom of the arc-shaped support frame through the plug connector. Top guardrails are welded on the outer side of the upper part of the arc-shaped support frame. The top guardrails on both sides are fixedly connected by bolt connectors. A steel plate platform frame is welded on the top of the arc-shaped support frame. A top steel plate body is tied on the upper part of the steel plate platform frame. A grouting funnel is welded on the side of the top steel plate body. An adaptive walking base is provided at the bottom of the rotating support frame. The adaptive walking base includes a rubber base, a self-locking floating wheel and a crawler. The structure comprises a non-slip rubber at the bottom of the rubber base, self-locking floating wheels are installed on the left and right sides of the rubber base, the crawling mechanism is embedded in the middle of the rubber base, and the crawling mechanism is used for autonomous longitudinal crawling and displacement, the self-locking floating wheel is provided with a floating deflection wheel frame, the self-locking floating wheel is rotatably connected to the rubber base through the floating deflection wheel frame, an elastic element is connected between the floating deflection wheel frame and the side of the rubber base, and the outer side of the wheel rim of the self-locking floating wheel is provided with longitudinally extending transverse stripes, the crawling mechanism comprises a crawling wheel, a worm gear driving mechanism and a reduction motor device, the crawling wheel is provided with a coaxial gear, the coaxial gear is connected through the worm gear driving connection in the worm gear driving mechanism, the end output shaft of the reduction motor device is connected with a worm gear meshing with the worm gear to realize self-locking drive, and the adaptive walking base realizes self-locking support and autonomous walking through lateral displacement and longitudinal crawling.

2. A large-diameter PCCP pipe joint treatment construction platform according to claim 1, characterized in that: The rotating support skeleton includes an inner ladder frame, an outer ladder frame and a transverse buckle plate. The inner ladder frame and the outer ladder frame are ladder structures with ladder frame transverse axes spaced apart. The inner ladder frame and the outer ladder frame are parallel to each other and are rotatably connected to the adaptive walking base at the bottom. Buckle joints are provided on the left and right sides of the transverse buckle plate. The buckle joints include hooks. The inner ladder frame and the outer ladder frame are rotatably connected between the corresponding ladder frame transverse axes through the hooks. A plug connector is provided on the top of the inner ladder frame and the outer ladder frame. The bottom of the arc-shaped support skeleton is rotatably connected with an auxiliary deflection support plate. The outer frame is correspondingly provided with a plurality of support slots. The auxiliary deflection support plate is used to progressively contact and support the lateral offset movement of the rotating support skeleton.

3. A large-diameter PCCP pipe joint treatment construction platform according to claim 2, characterized in that: The insert tube connector includes an outer tube and an inner insert tube, the outer tube is longitudinally welded to the bottom of the arc-shaped support frame, the rear sides of the inner ladder frame and the outer ladder frame are configured as welding ends, the inner insert tube is longitudinally welded to the welding ends to form a right-angle tube structure, the front sides of the inner ladder frame and the outer ladder frame are configured as supporting ends for contacting the outer tube, and a fixed cross bar is welded between the outer tubes on the left and right sides of the bottom of the arc-shaped support frame.

4. A large-diameter PCCP pipe joint processing construction platform according to claim 2, characterized in that: The lateral space formed between the inner ladder frame, the outer ladder frame and the transverse buckle plate is used to insert Type I plug-in boxes and Type II plug-in boxes in different states. Type I plug-in boxes correspond to the working state during longitudinal movement operation, and Type II plug-in boxes correspond to the working state during transverse locking normal construction operation. Diagonal reinforcement rods are welded inside Type I plug-in boxes and Type II plug-in boxes.

5. A large-diameter PCCP pipe joint treatment construction platform according to claim 1, characterized in that: The PCCP pipeline is installed on the upper part of the first-phase concrete base through two groups of symmetrically arranged concrete pads. The concrete pads are arranged at intervals along the length direction of the PCCP pipeline, and the longitudinal walking construction section of the adaptive walking base corresponds to the position of the concrete pads.

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