A hydraulic device for the jacking construction of ductile iron pipes

Abstract

The present application relates to a hydraulic device for the jacking construction of ductile iron pipes, belonging to the technical field of ductile iron pipe jacking construction equipment. It includes a mounting frame, a support plate, a hydraulic cylinder, a hanging member, a pulling mechanism, and a control component. The support plate is slidably mounted on the mounting frame. The fixed end of the hydraulic cylinder is fixedly mounted on the mounting frame, and the movable end of the hydraulic cylinder is fixedly connected to the support plate. When the hydraulic cylinder works, it pushes the support plate to slide on the mounting frame. The hanging member is mounted on the mounting frame, and the hanging member is used to hang the mounting frame on the socket of the ductile iron pipe to be jacked. The pulling mechanism is mounted on the support plate, and the pulling mechanism is used to fix the socket of the ductile iron pipe to be jacked at the socket of the already installed ductile iron pipe. The control component is mounted on the mounting frame, and the control component is used to control the operating state of the hydraulic cylinder. The present application has the effect of improving the efficiency of the jacking construction of large-diameter ductile iron pipes.

Description

Technical Field

[0001] This application relates to the technical field of jacking construction equipment for ductile iron pipes, and particularly to a hydraulic device for jacking construction of ductile iron pipes. Background Art

[0002] With the substantial increase in domestic water conservancy projects, the application of large-diameter ductile iron pipes in large-scale water transmission and distribution projects is becoming more and more widespread. However, the construction of large-diameter ductile iron pipes is more difficult. Especially during the installation process, it is necessary to overcome the problems of large volume and weight, which puts higher requirements on construction progress and cost control. Therefore, how to improve the installation efficiency of large-diameter ductile iron pipes has become an important issue in water conservancy project construction.

[0003] In the existing construction technologies, in order to address the installation difficulties of large-diameter ductile iron pipes, an installation method using a hoisting device in cooperation with a chain block is usually adopted. The crane is used to lift the ductile iron pipe to be jacked. By installing chain blocks on both sides of the pipe to be jacked and the already installed pipe, the socket and spigot of the two pipes are aligned, and the chain blocks are manually operated to connect the two pipes. Although this method can connect large-diameter ductile iron pipes, when manually operating the chain block for jacking, the forces on both sides are not synchronized, resulting in low quality of pipe jacking installation.

[0004] In view of the above related technologies, during the installation process of large-diameter ductile iron pipes, due to the large volume and weight of the pipes, the traditional hoisting and chain block methods are complex in operation and labor-intensive, resulting in slow construction progress and poor construction quality, and it is difficult to meet the requirements of rapid construction of modern water conservancy projects. Summary of the Invention

[0005] In order to improve the docking and installation efficiency of large-diameter ductile iron pipes, this application provides a hydraulic device for jacking construction of ductile iron pipes.

[0006] A hydraulic device for jacking construction of ductile iron pipes provided by this application adopts the following technical solutions:

[0007] A hydraulic device for jacking construction of ductile iron pipes includes:

[0008] An installation frame;

[0009] A support plate, the support plate is slidably installed on the installation frame;

[0010] A hydraulic cylinder, the fixed end of the hydraulic cylinder is fixedly installed on the installation frame, and the movable end of the hydraulic cylinder is fixedly connected to the support plate;

[0011] A hanging member, the hanging member is installed on the installation frame, and the hanging member is used to hang the installation frame on the ductile iron pipe to be jacked;

[0012] The pulling mechanism is installed on the support plate. The pulling mechanism includes a tensioning assembly and a fixing assembly, and is used to fix the socket of the ductile iron pipe to be jacked into the socket of the already installed ductile iron pipe.

[0013] The control component is installed on the mounting frame and is used to control the operating state of the hydraulic cylinder.

[0014] By adopting the above technical solutions, the device can be quickly and conveniently suspended at the socket of the ductile iron pipe to be jacked through the hanging parts. The structural design of the mounting frame and the support plate makes the whole device structurally stable, ensuring the stability of the installation process. During the jacking process, the tensioning assembly and the fixing assembly in the pulling mechanism work together to ensure that the socket of the ductile iron pipe to be jacked is aligned with the socket of the already installed ductile iron pipe, and a hydraulic cylinder is used as the jacking power source for jacking. Compared with the traditional manual operation of a chain hoist, it can provide a stronger and more stable thrust, shortening the time for pipe docking, improving the construction efficiency. At the same time, the operating state of the hydraulic cylinder is precisely controlled through the control component, further enhancing the operation convenience of the device. In summary, the device significantly improves the docking and installation efficiency of ductile iron pipes and shortens the construction period.

[0015] Optionally, the hanging parts include:

[0016] Hanging ears, two hanging ears are provided, and the two hanging ears are symmetrically and fixedly installed at both ends of the mounting frame;

[0017] Hanging ropes, both ends of the hanging ropes respectively pass through the two hanging ears, and the hanging ropes are hung at the socket of the ductile iron pipe to be jacked;

[0018] Adjusting lock, the adjusting lock is installed on the hanging rope and is used to adjust the length of the hanging rope.

[0019] By adopting the above technical solutions, the whole device can be conveniently and quickly suspended at the socket of the ductile iron pipe to be jacked. The two symmetrically arranged hanging ears ensure the installation stability of the device. The length of the hanging rope can be flexibly adjusted through the hanging rope and the adjusting lock, ensuring the applicability and stability of the device on ductile iron pipes with different diameters, thereby improving the flexibility and efficiency of construction.

[0020] Optionally, two groups of tensioning assemblies are provided, and the two groups of tensioning assemblies are symmetrically installed at both ends of the support plate. The tensioning assembly includes:

[0021] Tensioning motor, the fixed end of the tensioning motor is fixedly installed on the support plate;

[0022] A reel, the reel is rotatably mounted on the support plate, and the reel is fixedly connected to the output end of the tensioning motor;

[0023] A steel wire rope, the steel wire rope is wound around the drum, and one end of the steel wire rope is fixedly connected to the drum;

[0024] A hook is fixedly mounted on an end of the steel wire rope away from the drum.

[0025] By adopting the above technical solution, the tensioning assembly can control the reel through the tensioning motor to perform synchronous tensioning operations on both sides of the pipeline at the same time, ensuring the synchronization of the forces on both sides of the pipeline, so that the ductile iron pipe to be pushed in can be more accurately docked at the socket of the installed ductile iron pipe, avoiding displacement and tilting during the jacking process, thereby improving the stability and safety of the installation. At the same time, the tensioning motor drives the reel to rotate to realize the retraction and release of the wire rope, which is fast and labor-saving. Compared with manual operation of the fall chain tensioning, it greatly improves the construction efficiency and reduces the labor cost and construction time.

[0026] Optionally, the fixing assembly is provided with two groups, and the two groups of the fixing assembly are symmetrically mounted at two ends of the support plate, and the fixing assembly includes:

[0027] A screw rod, the screw rod is rotatably mounted on the support plate;

[0028] A mounting ring, the mounting ring being fixedly mounted on one end of the screw rod close to the ductile iron pipe to be pushed in;

[0029] A fastening nut, the fastening nut being threadedly connected to the screw rod;

[0030] A pulling rope, one end of which is fixedly connected to the mounting ring, and one end of which is away from the mounting ring is fixedly connected to the installed ductile iron pipe.

[0031] By adopting the above technical solution, after the tensioning assembly tightens the two pipes together, the two ends of the pulling rope are fixedly connected to the mounting ring and the installed ductile iron pipe, and then locked and fixed by rotating the screw rod and the fastening nut. The two aligned ductile iron pipes are fixed from both sides to ensure the reliability and safety of the connection, avoid installation failure or safety accidents caused by looseness, and at the same time make the pipeline more evenly stressed during the jacking process, ensuring stability during the jacking process.

[0032] Optionally, the control component includes:

[0033] A control box, the control box being fixedly mounted on the mounting frame;

[0034] An oil tank, the oil tank is arranged in the control box, and hydraulic oil is placed in the oil tank;

[0035] A hydraulic pump, the hydraulic pump is fixedly installed in the control box, and the hydraulic pump is connected to the oil tank;

[0036] A drive motor, wherein the drive motor is fixedly installed in the control box, the drive motor is connected to the hydraulic pump, and the drive motor is used to drive the hydraulic pump to operate;

[0037] An electromagnetic control valve is fixedly installed in the control box and is arranged between the hydraulic pressure and the hydraulic cylinder.

[0038] By adopting the above technical solution, the control box provides a stable installation location, which is convenient for centralized management and maintenance of various control components. During the jacking process, the drive motor provides power for the operation of the hydraulic pump. The hydraulic pump pressurizes the hydraulic oil in the tank and delivers it to the hydraulic cylinder. The electromagnetic control valve can accurately control the flow direction of the oil circuit. By controlling the oil circuit, the hydraulic cylinder can move forward, backward and stop. These components work together to ensure the efficient operation and precise operation of the device, thereby improving the installation efficiency of the ductile iron pipe and making the operation of the entire hydraulic device more stable and reliable.

[0039] Optionally, a protective cover is fixedly mounted on the hanging rope, and the protective cover is used to prevent the hanging rope from damaging the surface of the ductile iron pipe.

[0040] By adopting the above technical solution, the protective cover can effectively prevent the hanging rope from damaging the surface of the ductile iron pipe during the hanging jacking process, thereby ensuring the appearance quality and service life of the pipeline. At the same time, the protective cover can increase the friction between the hanging rope and the pipeline, making the hanging more stable.

[0041] Optionally, a lifting belt is provided on the mounting frame, and both ends of the lifting belt are fixedly mounted on the mounting frame.

[0042] By adopting the above technical solution, during the installation and disassembly process, there is no need for manual transportation. The device can be directly lifted to the next installation location using a lifting device through a lifting belt, which greatly saves time and labor costs. Compared with traditional manual handling methods, this method is faster and more efficient, can significantly shorten the construction period, and further improve construction efficiency.

[0043] Optionally, a plurality of steel bars are fixedly installed at intervals on the outer peripheral side of the fastening nut.

[0044] By adopting the above technical solution, multiple steel bars provide operators with better fulcrums and gripping positions when tightening the locking nuts. During the construction process, operators can more easily hold the steel bars to turn the locking nuts without the need for additional tools, thereby improving the convenience of operation.

[0045] In summary, the present application includes at least one of the following beneficial technical effects:

[0046] By using a hydraulic device to replace the traditional manual chain block, a more powerful and stable thrust is provided. By precisely controlling the operating state of the hydraulic cylinder through the control component, automated operation is achieved, shortening the construction time of pipe jacking.

[0047] By providing a hanging member, the mounting frame can be quickly and conveniently hung on the ductile iron pipe, and at the same time, it can adapt to ductile iron pipes of different diameters. The operation is simple and fast, greatly improving the installation efficiency.

[0048] By providing a pulling mechanism, the pulling motor and the reel in the tensioning component can quickly pull the ductile iron pipe to be jacked, ensuring the accurate butt joint of its socket with the socket of the fixed ductile iron pipe, reducing the labor cost and labor intensity. Then, through the lead screw, lock nut and pulling rope in the fixing component, the pipe to be jacked is firmly butt-jointed and fixed at the tensioning position, ensuring that during the jacking process, the pipe can be effectively prevented from shaking or shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 is an installation schematic diagram of the hydraulic device for jacking construction in an embodiment of the present application;

[0050] Figure 2 is a structural schematic diagram of the hydraulic device for jacking construction in an embodiment of the present application;

[0051] Figure 3 is an embodiment of the present application Figure 2 partial enlarged view of part A;

[0052] Figure 4 is a structural schematic diagram of the control component for display in an embodiment of the present application.

[0053] Description of the reference numerals:

[0054] 1, ductile iron pipe to be jacked; 2, mounting frame; 3, support plate; 4, hydraulic cylinder; 5, hanging member; 51, hanging ear; 52, hanging rope; 53, adjustment lock; 531, lock piece; 532, lock ring; 533, lock nut; 6, pulling mechanism; 61, tensioning component; 611, pulling motor; 612, reel; 613, steel wire rope; 614, hook; 62, fixing component; 621, lead screw; 622, mounting ring; 623, fastening nut; 624, pulling rope; 7, control component; 71, control box; 72, fuel tank; 73, hydraulic pump; 74, drive motor; 75, solenoid control valve; 8, protective sleeve; 9, lifting belt; 10, steel bar column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0055] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0056] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0058] The following further elaborates on this application in conjunction with the attached Figures 1-4 drawings.

[0059] The embodiment of this application discloses a hydraulic device for the jacking construction of ductile iron pipes.

[0060] Refer to Figure 1, The hydraulic device for the jacking construction of ductile iron pipes includes an installation frame 2, a support plate 3, two hydraulic cylinders 4, a hanging member 5, two sets of pulling mechanisms 6, and a control component 7. The support plate 3 is slidably installed on the installation frame 2. The fixed end of the hydraulic cylinder 4 is fixedly installed on the installation frame 2, and the movable end of the hydraulic cylinder 4 is fixedly connected to the support plate 3. When the hydraulic cylinder 4 works, it pushes the support plate 3 to slide on the installation frame 2. The hanging member 5 is installed on the installation frame 2 and is used to hang the installation frame 2 on the socket of the ductile iron pipe 1 to be jacked. The pulling mechanism 6 is installed on the support plate 3 and includes a tensioning component 61 and a fixing component 62. The pulling mechanism 6 is used to fix the socket of the ductile iron pipe 1 to be jacked at the socket of the already installed ductile iron pipe. The control component 7 is installed on the installation frame 2 and is used to control the operating state of the hydraulic cylinder 4.

[0061] During use, the device is hoisted to the socket of the ductile iron pipe 1 to be jacked by a hoisting device such as a crane. After the operator hangs the device at the socket of the ductile iron pipe through the hanging member 5, the ductile iron pipe is then hoisted to the docking installation location. Dust, sand grains, stones and other sundries within the socket and spigot range are cleaned to ensure that the socket and spigot of the pipe are clean and free of sundries. The rubber ring is correctly installed and vegetable oil is applied for lubrication to complete the preparatory work before jacking.

[0062] Align the spigot of the pipe to be jacked with the socket of the already installed pipe. Start the tensioning component 61, slowly push the spigot of the ductile iron pipe 1 to be jacked into the socket of the already installed ductile iron pipe and gradually tighten it. Then, fix the ductile iron pipe 1 to be jacked with the already installed ductile iron pipe through the fixing component 62. After ensuring that it is tightened and fixed firmly, start the hydraulic cylinder 4 through the control component 7, so that the hydraulic cylinder 4 pushes the spigot of the ductile iron pipe 1 to be jacked into the socket of the already installed ductile iron pipe gradually, making the pipe connection firm and completing the jacking construction. Then, close the hydraulic cylinder 4 for subsequent inspection and pipe trench backfilling work.

[0063] Refer to Figure 2 and Figure 3 , The hanging member 5 includes a hanging ear 51, a hanging rope 52, and an adjustment lock 53. There are two hanging ears 51, and the two hanging ears 51 are symmetrically and fixedly installed at both ends of the installation frame 2. Both ends of the hanging rope 52 are passed through the two hanging ears 51 through a rotatable ring structure. The hanging rope 52 is hung at the socket of the ductile iron pipe 1 to be jacked, and a protective sleeve 8 is fixedly installed on the hanging rope 52. The protective sleeve 8 is used to prevent the hanging rope 52 from damaging the surface of the ductile iron pipe.

[0064] The adjusting buckle 53 is installed on the hanging rope 52. The adjusting buckle 53 is used to adjust the length of the hanging rope 52. The adjusting buckle 53 includes a locking piece 531, a locking ring 532 and a locking nut 533. The locking ring 532 is U-shaped. Both ends of the U-shape are inserted into the locking piece 531, and threads are provided at both ends of the U-shape, which cooperate with the locking nut 533. After adjusting the hanging rope 52 to the appropriate length, it is passed through the hole formed by the locking piece 531 and the locking ring 532, and fixed with the locking nut 533 to achieve the adjustment purpose.

[0065] During use, according to the diameter of the ductile iron pipe 1 to be jacked and the position requirements of the mounting frame 2, determine the appropriate length required for the hanging rope 52. Pull the hanging rope 52 to adjust its length to the appropriate position. Then pass the hanging rope 52 through the hole formed by the locking piece 531 and the locking ring 532. Screw the locking nut 533 onto the threads at both U-shaped ends of the locking ring 532, and gradually tighten the locking nut 533 so that the locking piece 531 and the locking ring 532 tightly clamp the hanging rope 52 to fix the length of the hanging rope 52. Hang the hanging rope 52 with adjusted length on the socket of the ductile iron pipe 1 to be jacked. The protective sleeve 8 on the hanging rope 52 can effectively prevent the hanging rope 52 from damaging the surface of the ductile iron pipe during the hanging and jacking process. The hanging member 5 enables the device to be quickly hung on the sockets of ductile iron pipes 1 with different diameters to be jacked, with strong applicability and high flexibility.

[0066] Refer to Figure 1 and Figure 2 As shown in [relevant figure numbers], two sets of tensioning components 61 are provided. The two sets of tensioning components 61 are symmetrically installed at both ends of the support plate 3. The tensioning component 61 includes a tensioning motor 611, a winding drum 612, a steel wire rope 613 and a hook 614. The fixed end of the tensioning motor 611 is fixedly installed on the support plate 3. The winding drum 612 is rotatably installed on the support plate 3. The winding drum 612 is horizontally arranged and the axis of the winding drum 612 is perpendicular to the ductile iron pipe 1 to be jacked. The winding drum 612 is fixedly connected to the output end of the tensioning motor 611. The steel wire rope 613 is wound around the winding drum 612. The steel wire rope 613 can be made of high-strength alloy materials such as carbon steel, alloy steel or stainless steel. One end of the steel wire rope 613 is fixedly connected to the winding drum 612, and the hook 614 is fixedly installed at the end of the steel wire rope 613 away from the winding drum 612.

[0067] When in use, the socket of the ductile iron pipe 1 to be pushed in is aligned with the socket of the installed ductile iron pipe through the lifting device. After the docking interface is aligned, the hooks 614 on both sides of the tensioning assembly 61 are hung on the installed ductile iron pipe, and the tensioning motor 611 is started. The output end of the tensioning motor 611 drives the reel 612 to rotate, and the wire rope 613 begins to be wound. As the reel 612 rotates, the wire rope 613 is gradually tightened, and the ductile iron pipe 1 to be pushed in, which has been preliminarily docked, is slowly pushed into the socket of the installed pipe and gradually tightened. During the tightening process, the speeds of the tensioning motors 611 on both sides are kept consistent, so that the force on both sides of the pipe mouth is evenly applied. When there is no obvious movement at the socket interface of the two pipes, the tightening is stopped. There is no need for manual tightening, which reduces labor intensity.

[0068] Reference Figure 1 and Figure 2 Corresponding to the tensioning assembly 61 , two groups of fixing assemblies 62 are also provided. The two groups of fixing assemblies 62 are symmetrically installed at both ends of the support plate 3 . The fixing assemblies 62 include a screw rod 621 , a fastening nut 623 and a pulling rope 624 . The screw rod 621 is passed through and rotatably installed on the support plate 3. The axis of the screw rod 621 is set parallel to the axis of the ductile iron pipe 1 to be pushed in. A mounting ring 622 is fixedly installed on one end of the screw rod 621. The mounting ring 622 is used to fix the pulling rope 624. The fastening nut 623 is threadedly connected to the end of the screw rod 621 away from the mounting ring 622. Three steel bars 10 are fixedly installed on the outer peripheral side of the fastening nut 623. Generally, welding is used. The steel bars 10 are evenly arranged circumferentially with the axis of the fastening nut 623 as the center. One end of the pulling rope 624 is fixedly connected to the mounting ring 622, and the other end of the pulling rope 624 is detachably connected to the installed ductile iron pipe. The pulling rope 624 should be made of a non-elastic material with high tensile strength.

[0069] When in use, after the tensioning assembly 61 has preliminarily tightened the ductile iron pipe 1 to be pushed in and the installed ductile iron pipe, one end of the pulling rope 624 is fixedly connected to the mounting ring 622 at one end of the screw rod 621 to ensure that the connection is firm and reliable, and the other end of the pulling rope 624 is fixedly connected to the installed ductile iron pipe. A suitable connection method can be used to ensure that the connection is stable and easy to disassemble. When the screw rod 621 is adjusted to a suitable position, the fastening nut 623 is threadedly connected to the end of the screw rod 621 away from the mounting ring 622, and the fastening nut 623 is rotated through the steel column 10 to provide a better fulcrum for screwing the fastening nut 623. The tension of the pulling rope 624 is observed to ensure that the pulling rope 624 always maintains appropriate tension to fix the ductile iron pipe 1 to be pushed in and complete the preparations before pushing.

[0070] Reference Figure 2 and Figure 4, the control assembly 7 includes a control box 71, an oil tank 72, a hydraulic pump 73, a drive motor 74, and an electromagnetic control valve 75. The control box 71 is fixedly installed on the mounting frame 2. The oil tank 72 is arranged inside the control box 71, and hydraulic oil is placed in the oil tank 72. The hydraulic pump 73 is fixedly installed inside the control box 71, and the hydraulic pump 73 is communicated with the oil tank 72. The drive motor 74 is fixedly installed inside the control box 71, and the drive motor 74 is connected to the hydraulic pump 73. The drive motor 74 is used to drive the hydraulic pump 73 to operate. The electromagnetic control valve 75 is fixedly installed inside the control box 71, and the electromagnetic control valve 75 is communicated and arranged between the hydraulic pump 73 and the hydraulic cylinder 4.

[0071] During use, when the preparatory work such as tensioning and fixing is completed, start the drive motor 74. The drive motor 74 starts to run, provides power for the hydraulic pump 73. The hydraulic pump 73 transports the oil in the oil tank 72 to the hydraulic cylinder 4, and controls the flow direction and flow rate of the hydraulic oil through the electromagnetic control valve 75. When jacking, make the hydraulic oil flow into the piston chamber of the hydraulic cylinder 4, push the piston of the hydraulic cylinder 4 to extend. Since the distance between the support plate 3 and the already installed ductile iron pipe is fixed, the hydraulic cylinder 4 will drive the mounting frame 2 to jack forward, and then drive the ductile iron pipe 1 to be jacked continuously into the socket of the already installed ductile iron pipe.

[0072] When the jacking construction of the ductile iron pipe is completed or construction needs to be paused, by controlling the electromagnetic control valve 75, make the hydraulic cylinder 4 stop operating, cut off the flow direction of the hydraulic oil, make the piston rod of the hydraulic cylinder 4 retract or stay in the current position, turn off the drive motor 74, and the hydraulic pump 73 stops working. The control assembly 7 realizes the precise control of the hydraulic cylinder 4, ensures the efficient operation and precise operation of the hydraulic device, and improves the installation efficiency of the ductile iron pipe.

[0073] Refer to Figure 1 , a lifting belt 9 is arranged on the mounting frame 2. Both ends of the lifting belt 9 are tied to the mounting frame 2, and the two tying positions are symmetrical. When tying, it is necessary to ensure firmness and reliability. Appropriate knotting methods or special fixing buckles for the lifting belt 9 can be used. Use the hook of lifting equipment such as a crane or a hoist to lift the entire hydraulic device through the lifting belt 9 to realize the transfer of the device, avoid the heavy labor of manual transfer, reduce the work burden of construction workers. At the same time, through the lifting by the lifting device, the device can be moved more smoothly, reduce the collision of the device during the transfer process, and protect the integrity and performance of the device.

[0074] The implementation principle of a hydraulic device for the jacking construction of ductile iron pipes in an embodiment of the present application is as follows: During the jacking construction of ductile iron pipes, first, the entire device is suspended at the socket of the ductile iron pipe 1 to be jacked through the hanging member 5. The hanging ears 51 are symmetrically installed on both sides of the mounting frame 2. The hanging ropes 52 pass through the hanging ears 51 and are hung on the socket. The adjusting buckle 53 can adjust the length of the hanging ropes 52 according to the actual situation to ensure the stable suspension of the mounting frame 2. At the same time, the protective sleeve 8 on the hanging ropes 52 prevents damage to the surface of the ductile iron pipe.

[0075] The tensioning assembly 61 and the fixing assembly 62 work together. The tensioning motor 611 drives the reel 612 to rotate, winds up the steel wire rope 613, and pulls the ductile iron pipe to be jacked closer to the already installed ductile iron pipe. The hook 614 is fixed at one end of the steel wire rope 613, which is convenient for connecting with the already installed ductile iron pipe. One end of the pulling rope 624 is connected to the already installed ductile iron pipe, and the other end controls the tension through the adjusting screw 621 and the fastening nut 623, thereby ensuring that the already installed ductile iron pipe and the ductile iron pipe 1 to be jacked are fixed to each other, and further ensuring the accurate docking of the ductile iron pipe to be jacked and the already installed ductile iron pipe.

[0076] The support plate 3 slides on the mounting frame 2 driven by the hydraulic cylinder 4. The drive motor 74 in the control assembly 7 drives the hydraulic pump 73 to extract hydraulic oil from the fuel tank 72 and precisely controls the telescoping of the hydraulic cylinder 4 through the electromagnetic control valve 75. When the hydraulic cylinder 4 works, it pushes the support plate 3 to move, providing stable power for the jacking of the pipeline. The lifting belt 9 on the mounting frame 2 plays an important role during the installation and disassembly process. It can be easily connected to the lifting equipment to achieve the rapid transfer of the device without manual transfer, improving the construction efficiency.

[0077] In summary, through the coordinated action of each component, the hydraulic device realizes the high-efficiency, precision, and stability of the jacking construction of ductile iron pipes, providing a strong guarantee for the engineering construction.

[0078] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A hydraulic device for ductile iron pipe jacking construction, characterized in that: include: Mounting frame (2); A support plate (3), the support plate (3) being slidably mounted on the mounting frame (2); A hydraulic cylinder (4), wherein a fixed end of the hydraulic cylinder (4) is fixedly mounted on the mounting frame (2), and a movable end of the hydraulic cylinder (4) is fixedly connected to the support plate (3); A hanging member (5), the hanging member (5) being mounted on the mounting frame (2), the hanging member (5) being used to hang the mounting frame (2) on the ductile iron pipe (1) to be jacked; A pulling mechanism (6), the pulling mechanism (6) being mounted on the support plate (3), the pulling mechanism (6) comprising a tensioning assembly (61) and a fixing assembly (62), the pulling mechanism (6) being used to fix the spigot of the ductile iron pipe (1) to be pushed in at the socket of the installed ductile iron pipe; A control component (7), the control component (7) being mounted on the mounting frame (2), the control component (7) being used to control the operating state of the hydraulic cylinder (4); The tensioning assembly (61) is provided in two groups, and the two groups of the tensioning assembly (61) are symmetrically mounted at two ends of the support plate (3). The tensioning assembly (61) comprises: A tensioning motor (611), wherein a fixed end of the tensioning motor (611) is fixedly mounted on the support plate (3); A reel (612), the reel (612) being rotatably mounted on the support plate (3), the reel (612) being fixedly connected to an output end of the tensioning motor (611); a steel wire rope (613), the steel wire rope (613) being wound around the drum (612), one end of the steel wire rope (613) being fixedly connected to the drum (612); A hook (614), the hook (614) being fixedly mounted on an end of the steel wire rope (613) away from the drum (612); Two groups of the fixing components (62) are provided, and the two groups of the fixing components (62) are symmetrically mounted at two ends of the support plate (3). The fixing components (62) include: a screw rod (621), the screw rod (621) being rotatably mounted on the support plate (3); A mounting ring (622), the mounting ring (622) being fixedly mounted on one end of the screw rod (621) close to the ductile iron pipe (1) to be pushed in; a fastening nut (623), wherein the fastening nut (623) is threadedly connected to the screw rod (621); A pulling rope (624), one end of the pulling rope (624) being fixedly connected to the mounting ring (622), and one end of the pulling rope (624) being away from the mounting ring (622) being fixedly connected to the installed ductile iron pipe; The hanging component (5) comprises: A hanging ear (51), wherein two hanging ears (51) are provided, and the two hanging ears (51) are symmetrically and fixedly mounted at two ends of the mounting frame (2); A hanging rope (52), the two ends of which are respectively passed through the two hanging ears (51), and the hanging rope (52) is hung on the socket of the ductile iron pipe (1) to be pushed in; An adjusting lock buckle (53), the adjusting lock buckle (53) being mounted on the hanging rope (52), the adjusting lock buckle (53) being used to adjust the length of the hanging rope (52); The control component (7) comprises: A control box (71), the control box (71) being fixedly mounted on the mounting frame (2); An oil tank (72), the oil tank (72) being arranged in the control box (71), and hydraulic oil being placed in the oil tank (72); A hydraulic pump (73), the hydraulic pump (73) being fixedly mounted in the control box (71), the hydraulic pump (73) being in communication with the oil tank (72); a drive motor (74), the drive motor (74) being fixedly mounted in the control box (71), the drive motor (74) being connected to the hydraulic pump (73), and the drive motor (74) being used to drive the hydraulic pump (73) to operate; An electromagnetic control valve (75), wherein the electromagnetic control valve (75) is fixedly installed in the control box (71), and the electromagnetic control valve (75) is arranged between the hydraulic pump (73) and the hydraulic cylinder (4).

2. The hydraulic device for ductile iron pipe jacking construction according to claim 1, characterized in that: A protective sleeve (8) is fixedly mounted on the hanging rope (52), and the protective sleeve (8) is used to prevent the hanging rope (52) from damaging the surface of the ductile iron pipe (1) to be pushed in.

3. The hydraulic device for ductile iron pipe jacking construction according to claim 1, characterized in that: A lifting belt (9) is provided on the mounting frame (2), and both ends of the lifting belt (9) are fixedly mounted on the mounting frame (2).

4. The hydraulic device for ductile iron pipe jacking construction according to claim 1, characterized in that: A plurality of steel bars (10) are fixedly installed at intervals on the outer peripheral side of the fastening nut (623).

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