CN215891372U

CN215891372U - Nodular cast-iron pipe hydraulic pressure chain block installation device

Info

Publication number: CN215891372U
Application number: CN202122311913.3U
Authority: CN
Inventors: 何华茂; 林岚; 林一庚; 卓雄; 张敬明; 陈炜梁
Original assignee: Fuzhou Urban Construction Design Institute Co ltd
Current assignee: Fuzhou Urban Construction Design Institute Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-02-22
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a device for mounting a hydraulic inverted chain of a nodular cast iron pipe, wherein the device comprises: the sealing ring is arranged on a bell mouth between the two sections of the nodular cast iron pipes, the fixing support is arranged on one section of the nodular cast iron pipe, jack placing grooves are arranged at two ends of the fixing support, a horizontal rod perpendicular to a plane where the half circle of the fixing support is located is arranged in the middle of the top of the fixing support, the horizontal rod stretches across the two sections of the adjacent nodular cast iron pipes, and the horizontal rod on the fixing support is aligned to the central axis of the nodular cast iron pipe. This scheme is through setting up fixed bolster and horizon bar, can see whether two nodular cast-iron pipes are in the centering state in real time at the in-process of installation through the horizon bar, if not in the centering state, can realize the adjustment of rectifying a deviation fast in real time through the pressure size of the hydraulic jack of adjustment one side.

Description

Nodular cast-iron pipe hydraulic pressure chain block installation device

Technical Field

The utility model relates to the technical field of chain block installation, in particular to a hydraulic chain block installation device for a nodular cast iron pipe.

Background

For ductile iron pipes (ductile iron pipes for short) of different specifications, different installation tools can be adopted, simple tools such as DN150 and pipes below can be installed by crowbars according to a conventional construction method, and pipes of DN1200 and pipes above can be installed by chain block method tools (steel wire ropes, deformed steel bars and the parts of the chain blocks, which are in contact with the pipes, are protected by being padded with flexible materials so as to avoid damaging the pipe bodies and the inner and outer wall coatings thereof). Therefore, the chain block method has the advantages of material saving, labor saving and the like, is particularly suitable for projects with the characteristics of long distance, large caliber, straight pipe sections and the like, and has wide application prospect. The existing chain-winding method has the problems that when the pipe sections are butted, the deviation rectification adjustment needs to be manually and visually observed, and the deviation rectification effect is poor.

SUMMERY OF THE UTILITY MODEL

Therefore, a hydraulic chain block mounting device for a ductile cast iron pipe needs to be provided, and the problem that the deviation rectifying effect is poor when the existing chain block method is used for mounting is solved.

In order to achieve the above object, the present invention provides a ductile iron pipe hydraulic chain block installation apparatus, comprising: the sealing ring is arranged on a bell mouth between the two sections of the nodular cast iron pipes, the fixing support is arranged on one section of the nodular cast iron pipe, jack placing grooves are arranged at two ends of the fixing support, a horizontal rod perpendicular to a plane where the half-ring of the fixing support is located is arranged in the middle of the top of the fixing support, the horizontal rod stretches across the two sections of the adjacent nodular cast iron pipes, the horizontal rod on the fixing support is aligned to the central axis of the nodular cast iron pipe, hydraulic jacks are arranged in the jack placing grooves, two ends of each hydraulic jack are connected with chains with pipe hooks, the pipe hooks on the chains are hooked at the adjacent pipe mouths, and the pipe hooks are located at the central horizontal positions of the pipe mouths.

Further, the sealing washer includes rubber seal circle and sets up at the inside barb piece of rubber seal circle, and the internal diameter outside-in of rubber seal circle contracts, and barb piece sets up in the center direction of the big one side of rubber seal circle internal diameter and the little one side of barb point-to-point internal diameter.

Further, still include mouth of pipe butt joint subassembly, mouth of pipe butt joint subassembly includes two semicircular pipe muzzles and is used for the bolt of mouth of pipe cover equipment, and the pipe muzzle lateral wall is provided with a plurality of support arms that extend to the bellmouth, and the inboard of support arm forms the opening of holding bellmouth, and the open-ended internal diameter from outside to inside diminishes in proper order, and the internal diameter of opening bottom is unchangeable and is equal to the external diameter of bellmouth.

Furthermore, a plurality of distance measuring sensors are arranged at the bottom of the horizontal rod, at least two distance measuring sensors with preset distances are arranged above each section of nodular cast iron pipe, and a display screen connected with the distance measuring sensors is arranged at the top of the horizontal rod.

Further, the horizontal rod is a telescopic horizontal rod.

Different from the prior art, the technical scheme has the advantages that the fixing support and the horizontal rod are arranged, whether the horizontal rod is aligned with the central axis on the pipe wall or not can be seen in real time in the installation process, and if the horizontal rod is not aligned with the central axis on the pipe wall, the real-time and rapid deviation rectifying installation can be realized by adjusting the pressure of the hydraulic jack on one side.

Drawings

FIG. 1 is a flow chart of an installation method according to an embodiment;

FIG. 2 is a front view of the structure of an apparatus according to an embodiment;

FIG. 3 is a top view of the device structure according to an embodiment;

FIG. 4 is a side view of the structure of an apparatus according to an embodiment;

FIG. 5 is a schematic structural diagram of a seal ring according to an embodiment;

FIG. 6 is a schematic diagram of a seal ring in place according to an embodiment;

FIG. 7 is a side view of the apparatus of the present embodiment with the nozzle docking assembly attached.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1 to 7, the present embodiment provides a method for installing a hydraulic chain block of a ductile iron pipe, including the following steps: placing two sections of nodular cast iron pipes into a pipe ditch (a nodular cast iron pipe placing step in figure 1), and installing a sealing ring on a socket between the two sections of nodular cast iron pipes; placing a semicircular hoop type fixing support on the pipe wall of one section of nodular cast iron pipe, adjusting the fixing support to enable the jack placing grooves at two ends to be in a horizontal position, aligning a horizontal rod on the fixing support to the central axis of the nodular cast iron pipe (the central axis is generally drawn on the pipe wall and is parallel to the central axis of the pipe center), and enabling the horizontal rod of the fixing support to cross over the other section of nodular cast iron pipe; placing two hydraulic jacks into jack placing grooves at two ends respectively, hooking pipe hooks on chains connected with the two ends of the hydraulic jacks to adjacent pipe orifices, and enabling the pipe hooks to be located at the central horizontal positions of the pipe orifices; respectively starting the hydraulic jacks to apply force so as to straighten the chain; continuing to start the hydraulic jack, carrying out pipe orifice socket joint, and keeping a horizontal rod on the fixed support aligned with the central axis of the other section of nodular cast iron pipe; and releasing the hydraulic jack after the pipe orifice is inserted and inserted.

This scheme is through setting up fixed bolster and horizon bar, through the horizon bar whether with the axis alignment on the pipe wall, can see in real time whether two nodular cast iron pipes are in the centering state like this at the in-process of installation, if not in the centering state, can realize the installation of rectifying a deviation fast in real time through the pressure size of the hydraulic jack of adjustment one side.

In order to ensure that the sealing ring is not turned over and the sealing is ensured, the utility model also comprises the following steps: the thin narrow steel ruler is used as a trial rod, four-point inspection is carried out at intervals of 90 degrees around the socket pipe mouth, the compression ratio of the sealing ring is checked, the plugging depth of the trial rod at four points is equal to or less than the size of the ball head of the sealing ring away from the socket mouth, and the condition that the sealing ring is not turned over when the interface is connected normally is shown.

Further, the method also comprises the following steps: and backfilling the pipe trench. Backfilling materials such as soil and the like are backfilled into the pipe ditch, and the nodular cast iron pipe is further fixed and protected.

In order to avoid scratching the pipe wall of the nodular cast iron pipe during installation, the method also comprises the following steps: when the pipe hook hooks to the adjacent pipe orifice, a flexible material (such as foam, cloth and the like) is padded between the chain and the pipe wall for protection.

Preferably, the present invention further comprises the steps of: after the pipe orifice is inserted, the force of the jack is kept for a set time, and the complete insertion is ensured.

As a complete construction example, as shown in fig. 1. Step 1: and (5) preparing for construction. The construction method comprises construction qualification of construction units and constructors, preparation and verification of construction drawings and the like. And 2, hoisting and storing the ductile iron pipe. Including hoisting, transporting and storing. When the ductile iron pipes are stacked in multiple layers, the ductile iron pipes at the bottommost layer are placed on two rows of parallel sleepers, the sleepers are fixed by using wedges, one ductile iron pipe is arranged at a position one meter away from a bell end, the other ductile iron pipe is arranged at a position one meter away from a spigot end, the ductile iron pipes are parallel to each other, the bell ends are not required to be contacted with the ground, the bell sockets are arranged in a staggered mode, and the bell mouth of each layer extends out of the spigot socket of the next layer; if the building site and the temporary stacking site have no skid, bagged soil or sand can be woven to replace the skid. And 3, excavating a pipe trench and treating a foundation. And reserving a socket pit for the socket of the pipe at each interface so as to ensure that the pipeline is straight and meet the requirements of installation operation.

And 4, mounting the ductile iron pipe. The method comprises the following steps: the method for rounding the ductile iron pipe comprises the following steps: the pipe may cause the elliptical deformation of the pipe socket in the transportation, loading and unloading process, the elliptical deformation part of the pipe with DN500 and below specification needs to be cut off, and the pipe with DN500 specification can be used for circle calibration by using a special circle calibration tool. When rounding, attention should be paid to: calibration of the shot size reference data: excessive top expansion is needed during circle calibration, if the nominal diameter of the pipe is 100mm, the top expansion is needed to be 105mm during circle calibration, the top expansion excess value is related to factors such as the specification, the wall thickness and the ellipse degree of the pipe, and specific parameters can be determined through experiments during field circle calibration. (II) preparation work before installation: the tube is placed in the trench. And (III) installing a T-shaped interface ductile iron pipe: and (5) installing a sealing ring. And lubricating oil is coated on the working surface of the sealing ring and the socket working surface of the other pipe. And (4) installing the pipe, wherein the pipe can be installed by using tools such as a hydraulic chain block and the like. The method comprises the following steps: (1) installing a fixed support: and hooping the fixed support above the steel pipe, centering the horizontal rod, and keeping the fixed support on the central axis. And the inverted chains at the two ends adopt special hooks to pull the installed pipes and the pipes to be installed. The steel wire rope, the deformed steel bar and the contact part of the chain block and the pipe are protected by being padded with flexible materials so as to avoid damaging the pipe body and the inner and outer wall coatings of the pipe body. (2) Centering: and checking whether the position of the fixed support is centered and whether the connection between the jack and the chain is firm. (3) Force application by a jack: when all the appliances are installed in place, force is applied to the jack, the jack continuously applies force, the chains at two ends are stretched slowly, and stable socket joint of the whole pipeline is achieved through the balance rod. (4) Deviation rectification adjustment: in the process of applying force to the jack, whether the pipeline deviates from the socket or not is observed, and after the pressure is relieved and the position is adjusted through the jack, the pipeline is pressurized and applied with force for installation. (5) Voltage stabilization: and when the pipe socket position is stable, the jack force is kept for 10 seconds to ensure complete socket. Then, the position of the seal ring is checked. A thin narrow steel ruler is used as a trial rod, the compression ratio of the sealing ring is checked at four points of 90 degrees around a spigot, and the plugging depth of the trial rod at the four points is equal to or less than the distance from the ball head of the sealing ring to a socket, which shows that the sealing ring is not turned over when the interface is connected normally.

And 5, backfilling the pipe trench. And 6, testing the functionality of the pipeline. In the case of a service pipe, a hydrostatic test is performed according to relevant standards. Thus, the installation of the ductile iron pipe is completed.

The utility model provides a hydraulic chain block mounting device for a nodular cast iron pipe, which comprises: the device comprises two adjacent sections of nodular cast iron pipes 1 and a semicircular hoop type fixing support 2, wherein a sealing ring 4 is arranged on a bell mouth 3 between the two sections of nodular cast iron pipes, the fixing support 2 is arranged on one section of nodular cast iron pipe, jack placing grooves 5 are arranged at two ends of the fixing support, a horizontal rod 6 vertical to the plane where the half circle of the fixing support is located is arranged in the middle of the top of the fixing support, and the horizontal rod is a straight rod. The horizontal rod stretches across the two adjacent sections of nodular cast iron pipes, the horizontal rod on the fixing support is aligned to the central axis 7 of the nodular cast iron pipe, a hydraulic jack 8 is arranged in the jack placing groove, two ends of the hydraulic jack are connected with chains 9 with pipe hooks, the pipe hooks 10 on the chains are hooked at the adjacent pipe orifices, and the pipe hooks are located at the central horizontal positions of the pipe orifices. According to the utility model, the fixing support and the horizontal rod are arranged, and whether the horizontal rod is aligned with the central axis on the pipe wall or not can be determined in real time in the installation process, so that whether the two ductile cast iron pipes are in the centering state or not can be determined in real time, and if the two ductile cast iron pipes are not in the centering state, the real-time rapid deviation correction installation can be realized by adjusting the pressure of the hydraulic jack on one side.

In order to prevent the tube from shaking and causing the problem of seal leakage, as shown in fig. 5 and 6, the sealing ring 4 comprises a rubber sealing ring 40 and a barb member 41 arranged inside the rubber sealing ring, the inner diameter of the rubber sealing ring is contracted from outside to inside, and the barb member is arranged on one side with large inner diameter of the rubber sealing ring and in the center direction of one side with small barb pointing inner diameter. Therefore, when the pipe socket is inserted into the socket, the sealing ring can prop against the socket, and the problem of sealing leakage caused by shaking of the pipe is avoided.

In some embodiments, the central axis of the socket and the central axis of the socket may not be aligned, and external force is generally used to adjust the alignment. The automatic centering can be realized through the pipe orifice butt joint assembly, as shown in fig. 7, the automatic centering device further comprises a pipe orifice butt joint assembly 11, the pipe orifice butt joint assembly comprises two semicircular pipe orifice sleeves 12 and bolts 13 for assembling the pipe orifice sleeves, a plurality of supporting arms 14 (generally, two pipe orifice sleeves are arranged on the side wall of each pipe orifice sleeve, preferably, the supporting arms, the horizontal rods and the chains are arranged in a staggered mode) extending towards the bell mouth, an opening for accommodating the bell mouth is formed in the inner side of each supporting arm, the inner diameter of the opening is sequentially reduced from outside to inside, and the inner diameter of the bottom of the opening is unchanged and is equal to the outer diameter of the bell mouth. During installation, when the pipe is placed in the pipe ditch, the pipe orifice butt joint assembly can be installed and installed at the socket (the pipe orifice adjacent to the bell mouth), and the pipe orifice is sleeved and installed with a bolt for fastening. The opening faces the socket, and the bottom of the inclined part (the part with the gradually reduced inner diameter) of the opening is aligned with the nozzle of the socket, so that the socket is just positioned at the bottom of the inclined part and is aligned when the socket is aligned with the socket for insertion, and the aligned insertion is ensured. The depth of the inner diameter-unchanged part of the bottom of the opening is larger than that of the socket, so that the socket can be inserted into the bottom of the socket.

In order to conveniently know whether the two pipe sections are positioned on the same horizontal line or not, the bottom of the horizontal rod is provided with a plurality of distance measuring sensors 15, at least two distance measuring sensors which are spaced at preset distances are arranged above the nodular cast iron pipe of each section, and the top of the horizontal rod is provided with a display screen 16 connected with the distance measuring sensors. Therefore, the distance between the horizontal rod and the two pipe sections can be realized through the display screen, and the pipe sections with larger distance between the two pipe sections in one pipe section need to be supported by filling soil. Thereby ensuring that the two pipe sections are on the same horizontal line. Therefore, the horizontal rod and the central axis can be ensured to be aligned left and right, and the distance measuring sensor can be used for ensuring the vertical alignment, so that the two pipe sections can be positioned on the same axis, and the accurate installation is ensured.

For the convenience of storage, the horizontal rod is a telescopic horizontal rod. The horizontal bar is extended in use.

It should be noted that, although the above embodiments have been described herein, the utility model is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.

Claims

1. The utility model provides a nodular cast-iron pipe hydraulic pressure chain block installation device which characterized in that includes: the sealing ring is arranged on a bell mouth between the two sections of the nodular cast iron pipes, the fixing support is arranged on one section of the nodular cast iron pipe, jack placing grooves are arranged at two ends of the fixing support, a horizontal rod perpendicular to a plane where the half-ring of the fixing support is located is arranged in the middle of the top of the fixing support, the horizontal rod stretches across the two sections of the adjacent nodular cast iron pipes, the horizontal rod on the fixing support is aligned to the central axis of the nodular cast iron pipe, hydraulic jacks are arranged in the jack placing grooves, two ends of each hydraulic jack are connected with chains with pipe hooks, the pipe hooks on the chains are hooked at the adjacent pipe mouths, and the pipe hooks are located at the central horizontal positions of the pipe mouths.

2. The device for installing the hydraulic chain block of the ductile cast iron pipe as claimed in claim 1, wherein: the sealing washer includes rubber seal circle and sets up at the inside barb piece of rubber seal circle, and the internal diameter outside-in of rubber seal circle contracts, and barb piece sets up the central direction in the one side that the internal diameter is big and the directional one side that the internal diameter is little of barb.

3. The device for installing the hydraulic chain block of the ductile cast iron pipe as claimed in claim 1, wherein: still include mouth of pipe butt joint subassembly, mouth of pipe butt joint subassembly includes two semicircular pipe socket covers and is used for the bolt of the equipment of pipe socket cover, and the pipe socket cover lateral wall is provided with a plurality of support arms that extend to the bellmouth, and the inboard of support arm forms the opening of holding bellmouth, and open-ended internal diameter outside-in diminishes in proper order, and the internal diameter of opening bottom is unchangeable and is equal to the external diameter of bellmouth.

4. The device for installing the hydraulic chain block of the ductile cast iron pipe as claimed in claim 1, wherein: the bottom of the horizontal rod is provided with a plurality of distance measuring sensors, at least two distance measuring sensors with preset distances are arranged above the nodular cast iron pipe at each section, and the top of the horizontal rod is provided with a display screen connected with the distance measuring sensors.

5. The device for installing the hydraulic chain block of the ductile cast iron pipe as claimed in claim 1, wherein: the horizontal rod is a telescopic horizontal rod.