Butt joint device and butt joint method for PCCP pipe joints
By designing a PCCP pipe section docking device including a base, a bracket system and a traction mechanism, the problems of difficult docking and difficult axis control in the traditional docking method are solved, and efficient and excellent quality docking effect is achieved.
Patent Information
- Application Number
- CN202411411160.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2024-12-31
AI Technical Summary
The traditional PCCP pipe section docking method is difficult to connect and the pipe axis after docking is difficult to control, and multiple people need to cooperate, which affects the installation quality.
A docking device including a base, a bracket system and a traction mechanism is designed. The position is adjusted by the walking mechanism, the fixed bracket and the movable bracket are slidingly matched, and the power mechanism and the traction cable are docked to ensure docking balance and coaxiality.
It improves the efficiency and quality of PCCP pipe section docking, reduces manpower consumption, significantly improves economic and quality benefits, and ensures the coaxiality and balance of pipelines after docking.
Smart Images
Figure CN119222392A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of PCCP pipe joint connection, and in particular to a PCCP pipe joint connection device and a method. Background Art
[0002] PCCP pipe section is a prestressed steel cylinder concrete pipe. PCCP pipe section is a composite pipe made of four basic raw materials: steel plate, prestressed steel wire, concrete and cement mortar. After the manufacturing processes of steel cylinder forming, concrete pouring, prestress control technology application and protective layer spraying, PCCP pipe section usually has a diameter of 3000mm-5000mm, with the characteristics of large weight and large diameter. It is suitable for large-scale water transmission projects between cross-regional water sources, water supply and distribution networks of tap water, industrial and agricultural irrigation systems, circulating water pipelines of power plants, various municipal pressure sewage main pipelines and inverted siphons, etc., and has a wide range of applications. PCCP pipe section adopts steel socket and spigot, which is welded with steel cylinder. The socket and spigot have grooves and rubber rings to form a flexible joint including sliding rubber rings. PCCP pipe sections of the same specifications can be butt-jointed through the socket and spigot to form a pipeline.
[0003] However, the traditional methods for connecting PCCP pipe segments are the hoist-inside pulling method and the hoist-outside pulling method. The traditional methods for connecting PCCP pipe segments have high requirements on the PCCP pipe segment installation traction fixing points, require the cooperation of multiple people, and are difficult to connect. The quality of PCCP pipe segment connection is greatly affected by the construction workers' proficiency in connecting pipes, which makes it difficult to control the axis of the PCCP pipe formed by the connection. Summary of the invention
[0004] The purpose of the present invention is to overcome the shortcomings of the prior art that the PCCP pipe joint connection is difficult and the axis of the PCCP pipeline after connection is difficult to control, and to provide a PCCP pipe joint connection device and a construction method.
[0005] In a first aspect, the present invention provides a PCCP pipe joint docking device, comprising a base, wherein the base is provided with a walking mechanism; A support system, the support system comprising a fixed support and a movable support, the fixed support is arranged on the base, the movable support is slidably matched with the fixed support, and an abutment is provided at one end of the movable support away from the base, and the abutment can abut against the socket end face of the PCCP pipe joint; The traction mechanism comprises a power mechanism and a traction cable, wherein the power mechanism is connected to the movable bracket, the traction cable is connected to the power mechanism, one end of the traction cable away from the power mechanism is connected to a tension mechanism, and the tension mechanism can be connected to the socket end face of another PCCP pipe joint in a limited position; At least two of the traction mechanisms are distributed along the pipeline circumference.
[0006] A docking device for a PCCP pipe joint of the present invention is provided with a walking mechanism on a base. The docking device can be moved in the PCPP pipe joint by controlling the walking mechanism, so that the position of the docking device can be adjusted so that the abutting piece abuts against the socket of the PCCP pipe joint, thereby ensuring that the PCPP pipe joint can be well stressed and the socket is prevented from being damaged by pulling. The docking device can move smoothly in the PCCP pipe joint by sliding with the fixed bracket and the movable bracket. When the docking device moves in the PCCP pipe joint, the movable bracket is retracted to prevent the movable bracket from hitting the inner wall of the PCPP pipe joint and causing damage to the PCCP pipeline. The traction mechanism is movable. The PCCP pipe joint is composed of a power mechanism and a traction cable, and a tension mechanism that can be limitedly connected to the socket end face of the PCCP pipe joint is arranged on the traction cable. The power mechanism can shorten the distance between the abutment and the tension mechanism by applying tension; when the abutment and the tension mechanism are respectively arranged on different PCCP pipe joints, the power mechanism can make different PCCP pipe joints approach each other, and ensure the good connection between adjacent PCCP pipe joints by tightening the traction cable; by arranging multiple traction mechanisms, the traction balance of the docking device on the PCCP pipe joint is guaranteed, so that adjacent PCCP pipe joints are easier to dock, and the coaxiality of the PCCP pipeline after docking is guaranteed.
[0007] Preferably, the support system further comprises a driving device, wherein the driving device is connected to the fixed support, and the driving device is connected to the movable support, and the driving device can drive the movable support and the fixed support to slide relative to each other.
[0008] The driving device can drive the movable bracket to slide on the fixed bracket to ensure that the movable bracket can provide sufficient supporting force; a sliding groove is provided on the fixed bracket, so that the movable bracket is adapted to be set in the sliding groove, and the sliding groove is adapted to the movable bracket, thereby ensuring that the movable bracket has sufficient supporting force and avoiding deformation at the connection between the movable bracket and the fixed bracket.
[0009] Preferably, the driving device comprises a hydraulic push rod, a seat body of the hydraulic push rod is connected to the fixed bracket, and a rod body of the hydraulic push rod is connected to the movable bracket.
[0010] Since the movable bracket only slides in the radial direction of the PCCP pipe segment, the hydraulic push can extend or retract the movable bracket through simple hydraulic control, which is convenient for precise stroke control.
[0011] Preferably, the support systems are respectively provided on two opposite sides of the base, and each of the support systems is respectively connected to the driving device.
[0012] By arranging movable brackets on both sides of the base, the opposite sides of the socket end faces of the PCCP pipe joint are respectively abutted by the abutment parts, thereby increasing the force-bearing area of the PCCP pipe joint and avoiding damage to the PCCP pipe joint; each movable bracket is connected to a driving device, and the stroke of the driving device is consistent, so that the docking device is always located in the middle of the PCCP pipe joint, and multiple traction mechanisms are arranged to avoid the PCCP pipe joint from being offset after being pulled, and to ensure that the PCCP pipe joint moves along the axis after being pulled.
[0013] Preferably, the support system includes an active support and a driven support, the active support and the driven support are both slidably connected to the fixed support, the active support and the driven support are respectively connected to the power mechanism, the abutment is arranged on the active support, and the driving device is connected to the active support.
[0014] Both the active bracket and the driven bracket can support the power mechanism, ensuring the supporting strength of the base for the power mechanism; when the active bracket slides, the power mechanism drives the driven bracket to slide, ensuring that the power mechanism can move with the active bracket.
[0015] Preferably, the abutment member is a sheet-like structural member, and the abutment member can extend into the socket gap of adjacent 2-3 PCCP pipe sections.
[0016] The sheet-like structural member is extended into the socket gap of the adjacent PCCP pipe sections, so that the docking device is easier to use and convenient for supporting the PCCP pipe sections.
[0017] Preferably, the traction mechanism comprises a hydraulic pull rod, a seat of the hydraulic pull rod is connected to the movable bracket, and a rod body of the hydraulic pull rod is connected to the traction cable.
[0018] Precise stroke control is performed through the hydraulic pull rod to ensure that multiple traction mechanisms can apply force to the PCCP pipe section evenly, thereby avoiding the PCCP pipe section from tilting during the traction process.
[0019] Preferably, the traction cable is provided with a line length adjustment mechanism, and the traction cable can be wound around the line length adjustment mechanism.
[0020] The length of the traction cable is adjusted by the line length adjustment mechanism, so that the docking device can continuously dock multiple PCCP pipe sections. After the current PCCP pipe section is docked, the traction cable is lengthened by the line length adjustment mechanism, and the docking device is moved to the next PCCP pipe section so that the next PCCP pipe section can be docked with the current PCCP pipe section.
[0021] Preferably, the tension mechanism comprises a tension rod and an abutment plate, the tension rod is connected to the abutment plate, the tension rod is connected to the traction cable, and the abutment plate can abut against the socket end face of the PCCP pipe joint.
[0022] The two ends of the tension rod respectively abut against the opposite sides of the end face of the socket of the PCCP pipe joint, thereby ensuring the force balance of the PCCP pipe joint. An abutment plate is arranged on the tension rod to increase the contact area with the socket of the PCCP pipe joint and avoid damage to the socket of the PCCP pipe joint.
[0023] In a second aspect, the present invention provides a method for butt jointing a PCCP pipe joint, using the above-mentioned butt jointing device for a PCCP pipe joint, comprising the following steps: S1: Arrangement of PCCP pipe sections: PCCP pipe sections include pre-installed pipe sections and pre-installed pipe sections placed in sequence; Placing the PCCP pipe segments coaxially facilitates quick docking of the PCCP pipe segments and ensures that the docking device can continuously dock the PCCP pipe segments; S2: S2: abutting the front installation pipe section; select the front installation pipe section 2-3 sections away from the installation pipe section as the clamping pipe section, adjust the position of the abutment in the clamping pipe section, extend the movable bracket, and make the abutment abut the inner annular seam of the clamping pipe section as the support point; The abutment piece abuts against the end surface of the clamping pipe section, so that the clamping pipe section can be displaced under the action of the traction mechanism; S3: Adjust the length of the traction cable: adjust the length of the traction cable to make the traction cable in a taut state, so that the bearing and tensioning mechanism limits the connection of the pre-installed pipe section away from the socket end face of the front-installed pipe section; When the traction mechanism is in motion, the adjacent PCCP pipe sections are limited by the abutment and the tension mechanism. S4: Tighten the PCCP pipe segment: Use the traction mechanism to abut against the inner annular seam of the pre-installed pipe segment and apply force to make the pre-installed pipe segment and the pre-installed pipe segment socket joint each other to complete the PCCP pipe segment installation; Adjacent PCCP pipe sections can be brought closer to each other under the action of the traction mechanism, so that the adjacent PCCP pipe sections can be well butted together; the traction cable is tightened to ensure that the sockets of adjacent PCCP pipe sections are well butted together; S5: Connect the PCCP pipe joints in sequence: repeat steps S2-S4 until the construction is completed; By sequentially butt-jointing adjacent PCCP pipe sections, the PCCP pipe sections are butt-jointed to form a PCCP pipeline; S6: Remove the docking device: Remove the tension mechanism to make the docking device exit the PCCP pipeline After the docking device is docked, withdraw the PCCP pipe section.
[0024] A method for butting PCCP pipe joints of the present invention uses a butting device for PCCP pipe joints, wherein an abutment member and a bearing and tensioning mechanism can respectively clamp a pre-installed pipe joint and two PCCP pipe joints of the clamped pipe joints, and the pre-installed PCCP pipe joint is pulled to move along the axial direction by a traction device, so that the sockets and spigots of adjacent PCCP pipe joints can be quickly butted, and the walking mechanism can quickly move in the PCCP pipeline, thereby improving the efficiency and qualified rate of pipeline installation, significantly reducing the consumption of manpower during the installation process, and significantly improving the economic benefits and quality benefits.
[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. A docking device for a PCCP pipe joint of the present invention is provided with a walking mechanism on a base. The docking device can be moved in the PCPP pipe joint by controlling the walking mechanism, so that the position of the docking device can be adjusted so that the abutting piece abuts against the socket of the PCCP pipe joint, thereby ensuring that the PCPP pipe joint can be well stressed and the socket is prevented from being damaged by pulling. The docking device can move smoothly in the PCCP pipe joint by sliding with the fixed bracket and the movable bracket. When the docking device moves in the PCCP pipe joint, the movable bracket is retracted to prevent the movable bracket from hitting the inner wall of the PCPP pipe joint and causing damage to the PCCP pipeline. The traction mechanism is composed of The utility model is composed of a power mechanism and a traction cable, on which a tension mechanism capable of being limitably connected with the socket end face of the PCCP pipe section is arranged, and the power mechanism can shorten the distance between the abutment and the tension mechanism by applying a pulling force; when the abutment and the tension mechanism are respectively arranged on different PCCP pipe sections, the power mechanism can bring different PCCP pipe sections closer to each other, and ensure good connection between adjacent PCCP pipe sections by tightening the traction cable; by arranging a plurality of traction mechanisms, the traction balance of the docking device on the PCCP pipe section is ensured, so that adjacent PCCP pipe sections are easier to dock, and the coaxiality of the PCCP pipeline after docking is ensured.
[0026] 2. A method for docking a PCCP pipe joint of the present invention uses a docking device for a PCCP pipe joint. The abutment piece and the tension mechanism can respectively clamp the pre-installed pipe joint and the two PCCP pipe joints of the clamped pipe joint. The PCCP of the pre-installed pipe joint is pulled by the traction device to move along the axial direction, so that the sockets of adjacent PCCP pipe joints can be quickly docked. The walking mechanism can quickly move in the PCCP pipeline, thereby improving the efficiency and qualified rate of pipeline installation, significantly reducing the consumption of manpower during the installation process, and significantly improving the economic benefits and quality benefits. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a structural schematic diagram of a docking device for a PCCP pipe joint of the present invention; Figure 2 It is a partial structural schematic diagram of a docking device of a PCCP pipe joint of the present invention; Figure 3 It is a structural schematic diagram of the tensioning mechanism of the present invention; Figure 4 It is a structural schematic diagram of the wire length adjustment mechanism of the present invention; Figure 5 The present invention is a schematic flow chart of a method for butting PCCP pipe joints.
[0028] Markings in the figure: 100-PCCP pipe joint, 1-base, 11-travel mechanism, 2-bracket system, 21-active bracket, 211-fixed bracket, 212-movable bracket, 22-driven bracket, 23-abutment, 3- traction mechanism, 31- power mechanism, 32- traction cable, 33- tension mechanism, 331- tension rod, 332- abutment plate, 4-driving device, 5-three-level electric box, 6-temporary tool box, 7-oil pump operating table, 8-wire length adjustment mechanism. DETAILED DESCRIPTION
[0029] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.
[0030] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.
[0031] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.
[0032] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.
[0033] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.
[0034] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.
[0035] Example 1 like Figure 1-Figure 4 As shown, a PCCP pipe joint docking device includes A base 1, wherein the base 1 is provided with a walking mechanism 11; A support system 2, the support system 2 comprises a fixed support 211 and a movable support 212, the fixed support 211 is arranged on the base 1, the movable support 212 is slidably matched with the fixed support 211, and an abutment 23 is provided at one end of the movable support 212 away from the base 1, and the abutment 23 can abut against the socket end face of the PCCP pipe joint 100; The traction mechanism 3 includes a power mechanism 31 and a traction cable 32. The power mechanism 31 is connected to the movable bracket 212. The traction cable 32 is connected to the power mechanism 31. One end of the traction cable 32 away from the power mechanism 31 is connected to a tension mechanism 33. The tension mechanism 33 can be connected to the socket end face of another PCCP pipe joint 100. At least two traction mechanisms 3 are distributed along the pipeline circumference.
[0036] A walking mechanism 11 is arranged on the base 1. By controlling the walking mechanism 11, the docking device can be moved in the PCCP pipe section, which is convenient for adjusting the position of the docking device so that the abutment 23 abuts against the socket of the PCCP pipe section 100, thereby ensuring that the PCCP pipe section can be well stressed and avoiding the socket from being damaged; the docking device can move smoothly in the PCCP pipe section 100 by sliding with the fixed bracket 211 and the movable bracket 212. When the docking device moves in the PCCP pipe section 100, the movable bracket 212 is retracted to avoid the movable bracket 212 from hitting the inner wall of the PCCP pipe section and causing damage to the PCCP pipeline; the traction mechanism 3 is composed of a power mechanism 31 and a traction cable 32. The traction cable 32 is provided with a tension mechanism 33 which can be limitedly connected to the socket end face of the PCCP pipe section 100. The power mechanism 31 can shorten the distance between the abutment 23 and the tension mechanism 33 by applying a pulling force. When the abutment 23 and the tension mechanism 33 are respectively arranged on different PCCP pipe sections 100, the power mechanism 31 can bring different PCCP pipe sections 100 closer to each other, and ensure good connection between adjacent PCCP pipe sections 100 by tightening the traction cable 32. By setting a plurality of traction mechanisms 3, the traction balance of the docking device on the PCCP pipe section 100 is ensured, so that adjacent PCCP pipe sections 100 are easier to dock, and the coaxiality of the PCCP pipeline after docking is ensured.
[0037] In one or several embodiments, the support system 2 further includes a driving device 4, which is connected to the fixed support 211 through the driving device 4 so that the driving mechanism is fixed on the fixed support 211, and the output end of the driving device 4 is connected to the movable support 212, so that the driving device 4 can drive the movable support 212 to slide relative to the fixed support 211, so that the driving device 4 controls the movable support 212 to slide on the fixed support 211, so that the stroke of the movable support 212 is controlled by the driving device 4, and when the docking device moves in the PCCP pipe section 100, the driving device 4 retracts the movable support 212 to prevent the movable support 212 from hitting the inner wall of the PCCP pipe section 100 and causing damage to the PCCP pipe section 100, and when the abutment 23 needs to be extended, the driving device 4 controls the movable support 212 to extend, so that the abutment 23 can abut against the socket end face of the PCCP pipe section 100.
[0038] In an optional embodiment, the driving device 4 includes a hydraulic push rod. Since during the use of the docking device, the movable bracket 212 only needs to be extended and retracted in the radial direction of the PCCP pipe segment 100, the use of a hydraulic push rod can perform more precise stroke control. The seat of the hydraulic push rod is connected to the fixed bracket 211, and the rod body of the hydraulic push rod is connected to the movable bracket 212, so that the hydraulic push rod can drive the movable bracket 212 to move when it moves.
[0039] In an optional embodiment, the support system 2 is respectively provided on opposite sides of the base 1, and each of the support systems 2 is respectively connected to the driving device 4. The movable supports 212 on both sides of the base 1 are extended simultaneously, and the abutment members 23 arranged on the movable supports 212 on both sides of the fixed support 211 respectively abut against the opposite sides of the socket end faces of the PCCP pipe section 100, thereby providing a more stable support effect for the docking device; each movable support 212 is respectively connected to a driving device 4, and the driving device 4 moves synchronously to ensure that the docking device is located at the center position of the PCCP pipe section 100, and each movable support 212 is respectively connected to a traction mechanism 3, so that the traction mechanism 3 applies a more balanced force to the PCCP pipe section 100; by setting two relative traction mechanisms 3, the traction mechanism 3 can maintain a state of force balance when traction is applied to the PCCP pipe section 100; the traction mechanism 3 applies force synchronously to ensure that the PCCP pipe section 100 is subjected to balanced force.
[0040] In an optional embodiment, the support system 2 is composed of an active support 21 and a driven support 22. The active support 21 and the driven support 22 are both slidably connected to the fixed support 211. The active support 21 and the driven support 22 are respectively connected to the power mechanism 31. Through the setting of the driven support 22, the traction mechanism 3 can be more firmly connected to the fixed support 211, ensuring the force stability of the traction mechanism 3. The abutment 23 is set on the active support 21, which makes it easier to control the extension of the abutment 23. The driving device 4 is connected to the active support 21, and the extension and retraction of the active support 21 is controlled by the driving device 4.
[0041] In one or several embodiments, the abutment 23 is a sheet-like structural member, and the abutment 23 can be inserted into the socket gap of the adjacent PCCP pipe joint 100; the sheet-like structural member can be inserted into the small gap at the socket connection, so that the docking device can be used to reinforce the pipeline, which is more convenient for actual use of the docking device.
[0042] In one or several embodiments, the traction mechanism 3 is a hydraulic pull rod. During the traction process, only the traction mechanism 3 needs to provide pulling force to bring adjacent PCCP pipe sections 100 closer to each other. Therefore, the hydraulic pull rod can accurately control the stroke of the hydraulic pull rod through stroke control. The seat of the hydraulic pull rod is connected to the movable bracket 212, and the rod body of the hydraulic pull rod is connected to the traction cable 32, so that the rod body of the pull rod can drive the traction cable 32 to move when it moves.
[0043] In an optional embodiment, a force monitoring device is provided on the hydraulic pull rod, through which the force applied by the rod body of the hydraulic railing to the traction cable 32 can be monitored, thereby avoiding damage to the socket of the PCCP pipe section 100 due to excessive force.
[0044] In one or several embodiments, the traction cable 32 is provided with a line length adjustment mechanism 8, and the traction cable 32 can be wound around the line length adjustment mechanism 8; the length of the traction cable 32 is adjusted by the line length adjustment mechanism 8, and after the current PCCP pipe segment 100 is docked, the length of the traction cable 32 can be extended to allow the docking device to move to the next PCCP pipe segment 100 for docking, so that the docking device can continuously dock the PCCP pipe segment 100.
[0045] In one or several embodiments, the tension mechanism 33 is composed of a tension rod 331 and an abutment plate 332. The tension rod 331 is connected to the abutment plate 332. The tension rod 331 is connected to the traction cable 32. The abutment plate 332 can abut against the socket end face of the PCCP pipe joint 100. Abutment plates 332 are provided at both ends of the tension rod 331. The two abutment plates 332 respectively abut against the opposite sides of the socket end face of the PCCP pipe joint 100, thereby increasing the force-bearing area of the socket of the PCCP pipe joint 100 and avoiding damage to the socket of the PCCP pipe joint 100.
[0046] In an optional embodiment, the base 1 and the fixed bracket 211 are provided with a lifting mechanism, and the lifting mechanism can adjust the height of the fixed bracket 211 .
[0047] Specifically, the electric three-wheel dump truck is modified to serve as the traveling mechanism 11 of the pipeline installation trolley, and a base 1 is formed on the traveling mechanism 11 by welding steel sections and steel plates. A fixed beam is welded on the base 1 as a fixed bracket 211, and retractable beams are used at both ends of the fixed beam as movable brackets 212. An ejection jack is provided as a driving device 4, and the seat of the ejection jack is hinged on the beam, and the telescopic beam is connected to the rod of the ejection jack to achieve the extension and retraction of the telescopic beam; a 2 cm steel plate is welded at the end of the telescopic beam as a support point for embedding the annular seam of the socket of the adjacent PCCP pipe section 100, and the side of the telescopic beam is hingedly connected to the inner pull jack as a traction mechanism 3, and the end of the inner pull jack is hinged to the traction cable 32. When the PCCP pipe segment 100 is docked and installed, after the traction cable 32 passes through the installation pipe segment, a log cross brace is used as a bearing and tensioning mechanism 33 on the non-installation side of the PCCP pipe segment 100 to abut against the socket of the PCCP pipe segment 100, and the traction cable 32 is tied to the log cross brace. By contracting the inner pulling jack, the PCCP pipe segment 100 is able to complete the docking installation of the socket of the PCCP pipe segment 100 under the action of the inner pulling traction. The inner pulling fixed fulcrum of the docking device and the inner pulling installation of the PCCP pipe segment 100 are both completed by pulling with the ejection jack, and the installation efficiency is fast and reliable, and the installation process significantly reduces the consumption of manpower.
[0048] Both the inner pull jack and the ejector jack are hydraulic jacks.
[0049] Traveling mechanism 11: The lower electric traveling mechanism 11 is modified by dismantling the dump truck of a common electric three-wheel dump truck on the market. The common size on the market is 70cm×60cm×50cm (length×width×height), which can meet the load-bearing and driving requirements of the PCCP pipe section 100.
[0050] Base 1: After the reconstruction, a steel plate with a thickness of 2 cm is welded on the structural steel frame of the walking mechanism 11 as the base 1 steel plate, and a 4 cm × 4 cm square steel is welded to the bottom of the steel plate as a reinforcing rib.
[0051] Fixed bracket 211 and movable bracket 212: Two steel plate supports with a thickness of 1 cm, a length of 43 cm and a height of 49 cm are vertically welded to the square steel frame of the trolley. The front and rear distance between the two steel plates is 15 cm. The welding is done by manual arc welding on both sides. 15 cm × 15 cm square steels are welded on both sides of the upper part of the steel plate as fixed beams to form a fixed bracket 211. The square steel serving as the fixed beam extends 45 cm. A 13 cm × 13 cm square steel is inserted inside the square steel as a retractable beam to form a movable bracket 212. A 20 cm × 13 cm × 2 cm (width × height × thickness) steel plate is welded at the end of the retractable beam as a steel clip. Ejection jacks are set on the retractable beam and the fixed beam. The rear side of the retractable beam is hinged to the inner pull jack serving as the traction mechanism 3. The end of the inner pull jack is hinged to the steel wire rope serving as the traction cable 32.
[0052] The driven bracket 22 is formed by vertically welding 6cm×6cm square steel to the steel plate of the base 1 to form a fixed beam of the driven bracket 22, and the length of the fixed beam is 155cm; 4cm×4cm square steel is inserted into the grooves on both sides of the fixed beam as the telescopic beam of the driven bracket 22. A three-level electric box 5 and a temporary tool box 6 are placed on the rear side of the driven bracket 22.
[0053] Hydraulic oil pump: An oil pump operating table 7 is arranged in the middle of the base 1, and the oil pump operating table 7 can control the ejection jack and the inner pull jack respectively.
[0054] Example 2 like Figure 5 As shown, a method for butt jointing a PCCP pipe joint, using a butt jointing device for a PCCP pipe joint in Example 1, comprises the following steps: S1: Arrange PCCP pipe sections: PCCP pipe sections include pre-installed pipe sections and pre-installed pipe sections placed in sequence; S2: abutting the front installation pipe section; selecting the front installation pipe section 2-3 sections away from the installation pipe section as the clamping pipe section, adjusting the position of the abutment in the clamping pipe section, extending the movable bracket, and making the abutment abut against the inner annular seam of the clamping pipe section as a supporting force point; S3: Adjust the length of the traction cable: adjust the length of the traction cable to make the traction cable in a taut state, so that the bearing and tensioning mechanism limits the connection of the pre-installed pipe section away from the socket end face of the front-installed pipe section; S4: Tighten the PCCP pipe segment: Use the traction mechanism to abut against the inner annular seam of the pre-installed pipe segment and apply force to make the pre-installed pipe segment and the pre-installed pipe segment socket joint each other to complete the PCCP pipe segment installation; S5: Connect the PCCP pipe joints in sequence: repeat steps S2-S4 until the construction is completed; S6: Remove the docking device: remove the tensioning mechanism to make the docking device withdraw from the PCCP pipeline.
[0055] By using a PCCP pipe joint docking device, the abutment and the tension mechanism can respectively clamp the two PCCP pipe joints, the pre-installed pipe joint and the front-installed pipe joint, and the adjacent PCCPs are pulled to move along the axial direction by the traction device, so that the sockets of adjacent PCCP pipe joints can be quickly docked, and the walking mechanism can quickly move in the PCCP pipeline, thereby improving the efficiency and qualified rate of pipeline installation, significantly reducing the consumption of manpower during the installation process, and significantly improving the economic benefits and quality benefits.
[0056] Example 3 A method for butt jointing a PCCP pipe segment, using a butt jointing device for a PCCP pipe segment in Example 1, comprising the following steps: ① driving into the pipeline → ② fixing the movable bracket → ③ installing the log cross brace → ④ pulling the pipeline to complete the butt joint → ⑤ removing the cross brace and entering the next cycle of construction ① Enter the pipeline The docking device is moved to a suitable position in the pipeline through the walking mechanism, so that the steel clamping plate stays at a suitable position of the front pipe section so that the steel clamping plate can be clamped at the annular seam.
[0057] ②Fix the movable bracket Through the middle oil pump operating table, the ejection jack is lifted. As the ejection jack is lifted, the telescopic beam is extended, so that the steel clip at the end of the telescopic beam is embedded in the socket connection seam of the inner ring of the adjacent PCCP pipe segment, forming a reliable and effective inner pulling support point.
[0058] ③ Installation of log cross braces First, lift the inner-pull jacks on both sides of the base to the longest stroke, and then hinge the steel wire rope at the end of the jack as a traction cable. Check the condition of the steel wire rope before use. The steel wire rope is extended from the end of the inner-pull jack to the socket on the non-installation side of the installation pipe segment. Use a log cross brace to support the socket on the non-installation side, and connect the two steel wire ropes to the log cross brace respectively to form a pipeline installation inner-pull system.
[0059] ④ Pull the pipeline to complete the docking Before the butt-jointed installation of the pipeline, check whether the steel clamping plate has been embedded in the socket connection seam of the front pipe joint and is safe and reliable. Check the operation of the ejection jack, internal pull jack, oil pump, wire rope, log cross brace and other parts. After confirming that each part is operating well, start the internal pull hydraulic oil pump to complete the butt-jointed installation of the PCCP pipe joint under the force of the internal pull jack.
[0060] ⑤Remove the horizontal brace and enter the next cycle of construction After the PCPP pipe joint is installed, the inner pull jack is lifted to separate the log cross brace from the pipe, and the log cross brace is removed from the wire rope. The inner pull fixing point of the steel pallet can be adjusted according to the actual situation on site. When the inner pull fixing point needs to be replaced, the jack is retracted to make the steel pallet out of the inner ring seam of the pipe. After the steel pallet is retracted to a certain position, it is driven to a suitable position and the pipe installation construction is continued.
[0061] A method for butt jointing PCCP pipe segments can greatly improve the efficiency and qualified rate of pipeline installation. The efficiency of butt jointing a PCCP pipe segment using a method for butt jointing PCCP pipe segments is about 20 minutes per segment, while the efficiency of the traditional manual installation method is 35 minutes per segment. Under the premise of completing the rated workload in the same time, the efficiency of this method is 1.75 times that of the traditional method. In addition, while the installation time of the pipe segment is reduced, the crane shift time is also reduced, and the use cost of mechanical equipment is reduced. The damage rate of the PCCP pipe mouth installed by this method is reduced by nearly 10% compared with the traditional method, and the economic and quality benefits are significantly improved.
[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A PCCP pipe joint docking device, characterized in that: include A base (1), wherein the base (1) is provided with a walking mechanism (11); A support system (2), the support system (2) comprising a fixed support (211) and a movable support (212), the fixed support (211) being arranged on the base (1), the movable support (212) being slidably matched with the fixed support (211), and an abutment member (23) being arranged at an end of one side of the movable support (212) away from the base (1), the abutment member (23) being capable of abutting against a socket end face of a PCCP pipe joint (100); The traction mechanism (3) comprises a power mechanism (31) and a traction cable (32), wherein the power mechanism (31) is connected to the movable bracket (212), the traction cable (32) is connected to the power mechanism (31), one end of the traction cable (32) away from the power mechanism (31) is connected to a tension mechanism (33), and the tension mechanism (33) can be connected to the socket end face of another PCCP pipe joint (100) in a limiting manner; At least two of the traction mechanisms (3) are distributed along the pipeline circumference.
2. A PCCP pipe joint docking device according to claim 1, characterized in that: The support system (2) further comprises a driving device (4), wherein the driving device (4) is connected to the fixed support (211), and the driving device (4) is connected to the movable support (212), and the driving device (4) is capable of driving the movable support (212) and the fixed support (211) to slide relative to each other.
3. A PCCP pipe joint docking device according to claim 2, characterized in that: The driving device (4) comprises a hydraulic push rod, the seat body of the hydraulic push rod is connected to the fixed bracket (211), and the rod body of the hydraulic push rod is connected to the movable bracket (212).
4. A PCCP pipe joint docking device according to claim 2, characterized in that: The support systems (2) are respectively provided on two opposite sides of the base (1), and each of the support systems (2) is respectively connected to the driving device (4).
5. A PCCP pipe joint docking device according to claim 4, characterized in that: The support system (2) comprises an active support (21) and a driven support (22), the active support (21) and the driven support (22) are both slidably connected to the fixed support (211), the active support (21) and the driven support (22) are respectively connected to the power mechanism (31), the abutment member (23) is arranged on the active support (21), and the drive device (4) is connected to the active support (21).
6. A PCCP pipe joint docking device according to claim 1, characterized in that: The abutment member (23) is a sheet-like structural member, and the abutment member (23) can extend into the socket gap of adjacent PCCP pipe joints (100).
7. A PCCP pipe joint docking device according to claim 1, characterized in that: The traction mechanism (3) comprises a hydraulic pull rod, the seat of the hydraulic pull rod is connected to the movable bracket (212), and the rod body of the hydraulic pull rod is connected to the traction cable (32).
8. A PCCP pipe joint docking device according to claim 1, characterized in that: The traction cable (32) is provided with a line length adjustment mechanism (8), and the traction cable (32) can be wound around the line length adjustment mechanism (8).
9. A PCCP pipe joint docking device according to claim 1, characterized in that: The tension mechanism (33) comprises a tension rod (331) and an abutment plate (332); the tension rod (331) is connected to the abutment plate (332); the tension rod (331) is connected to the traction cable (32); and the abutment plate (332) can abut against the socket end face of the PCCP pipe joint (100).
10. A method for butt jointing a PCCP pipe joint, characterized in that: A PCCP pipe joint docking device according to any one of claims 1 to 9 comprises the following steps: S1: Arrange PCCP pipe sections: PCCP pipe sections include pre-installed pipe sections and pre-installed pipe sections placed in sequence; S2: abutting the front installation pipe section; selecting the front installation pipe section 2-3 sections away from the installation pipe section as the clamping pipe section, adjusting the position of the abutment in the clamping pipe section, extending the movable bracket, and making the abutment abut against the inner annular seam of the clamping pipe section as a supporting force point; S3: Adjust the length of the traction cable: adjust the length of the traction cable to make the traction cable in a taut state, so that the bearing and tensioning mechanism limits the connection of the pre-installed pipe section away from the socket end face of the front-installed pipe section; S4: Tighten the PCCP pipe segment: Use the traction mechanism to abut against the inner annular seam of the pre-installed pipe segment and apply force to make the pre-installed pipe segment and the pre-installed pipe segment socket joint each other to complete the PCCP pipe segment installation; S5: Connect the PCCP pipe joints in sequence: repeat steps S2-S4 until the construction is completed; S6: Remove the docking device: remove the tensioning mechanism to make the docking device withdraw from the PCCP pipeline.