Flange dislocation drawing device

Abstract

The utility model provides a flange dislocation drawing device which comprises a supporting rod, an upper end pull rod used for being inserted into a flange screw hole, a hydraulic device, a flange adapter used for abutting against the side face of a flange, a lower end pull rod and a hydraulic pump, the upper end pull rod is installed on one side of the top of the supporting rod, and the lower end pull rod is installed on one side of the bottom of the supporting rod. The hydraulic device is installed on the lower end pull rod, the flange adapter is installed on the hydraulic device, and the hydraulic pump is connected with the hydraulic device through a pipeline. The upper end pull rod is used for being inserted into a positioning flange screw hole to pull the positioning flange end. The curved surface of the flange adapter is in contact with the outer side of the deviated flange, the flange adapter disperses hydraulic pressure on the flange surface of the pipeline, and slipping and damage to the flange are reduced. And under the acting force of the hydraulic device, the staggered flange is pulled back to the normal position. Cost is low, manufacturing is easy, installation and operation are convenient, working efficiency is high, and the problem that daily large-diameter pipeline equipment flanges are difficult to install is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of installation of mechanical equipment for finished oil pipelines, in particular to a flange dislocation drawing device. Background Art

[0002] In the finished oil pipeline transportation station, all mechanical equipment devices are connected to the mechanical equipment body flange through pipeline welding flanges and bolted fastening. The types of mechanical equipment include organic pumps, ultrasonic flow meters, mass flow meters, valves, etc. There are equipment of different diameters including large-diameter flange connection equipment of DN300mm, DN400mm, and DN500mm.

[0003] During the construction period and long-term operation of pipeline equipment, it is necessary to frequently dismantle and reinstall maintenance work on related equipment. When the pipeline size and equipment size are not matched during construction, there is a phenomenon of forcibly pulling the flange for installation. Due to unreasonable flange installation, there is a large stress between the pipeline and the equipment. Stress may also be generated during the long-term operation of pipeline equipment, and the impact is relatively large. When the pipelines, valves and other equipment are dismantled and maintained and then reinstalled, there is often a large misalignment of the flange surfaces on both sides, and it is difficult to insert the installation connecting bolts into the flange screw holes, resulting in time-consuming and labor-intensive reinstallation.

[0004] In the disassembly and assembly of pipeline mechanical equipment, conventional tools include crowbars, flange openers, ordinary pullers, sledgehammers and other tools, which are not suitable for the installation of flanges of such large-diameter equipment. Inappropriate tools often increase the intensity of work, damage the equipment, cause deformation of the equipment, and cause leakage problems, resulting in low work efficiency and poor quality. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a flange dislocation drawing device in view of the deficiencies of the prior art.

[0006] The utility model provides a technical solution to the above-mentioned technical problems as follows: a flange dislocation pulling device, comprising: a support rod, an upper end pull rod for inserting into a flange screw hole, a hydraulic device, a flange adapter for abutting against the flange side, a lower end pull rod, and a hydraulic pump, wherein the upper end pull rod is installed on the top side of the support rod, the lower end pull rod is installed on the bottom side of the support rod, the hydraulic device is installed on the lower end pull rod, the flange adapter is installed on the hydraulic device, and the hydraulic pump is connected to the hydraulic device through a pipeline.

[0007] The beneficial effects of the technical solution of the utility model are as follows: the upper end pull rod is used to insert into the screw hole of the positioning flange to pull the positioning flange end. The flange adapter disperses the hydraulic pressure on the pipeline flange surface through the curved surface of the flange adapter to contact the outer side of the pull-off flange, reducing slippage and damage to the flange. Under the action of the hydraulic device, the misaligned flange is pulled back to the correct position. Low cost, simple production, convenient installation and operation, high work efficiency, solve the problem of difficult flange installation of daily large-diameter pipeline equipment.

[0008] Furthermore, the upper pull rod and the lower pull rod are located on the same side of the support rod, and the support rod, the upper pull rod and the lower pull rod form a C-shaped structure.

[0009] The beneficial effects of adopting the above further technical solution are: it is convenient to insert the upper end pull rod into the screw hole of the positioning flange to pull the positioning flange end. It is convenient to contact the outer side of the pulled flange through the curved surface of the flange adapter to disperse the hydraulic pressure on the pipeline flange surface, reduce slippage and damage to the flange. It is convenient to pull the misaligned flange back to the correct position under the action of the hydraulic device.

[0010] Furthermore, a reinforcing block is provided at the connection between the lower end pull rod and the support rod, and the support rod, the upper end pull rod and the lower end pull rod are all made of steel.

[0011] The beneficial effects of adopting the above further technical solution are: avoiding deformation and fracture of the bracket caused by large hydraulic pressure to ensure reliability of use and improving the load strength of the flange dislocation drawing device.

[0012] Furthermore, a hydraulic cylinder mounting platform is provided on a side of the lower end pull rod away from the support rod, and a hydraulic cylinder mounting port for mounting a hydraulic device is provided on the hydraulic cylinder mounting platform.

[0013] The beneficial effect of adopting the above further technical solution is that a hydraulic cylinder mounting opening is provided on the hydraulic cylinder mounting platform for placing the hydraulic device to prevent the hydraulic cylinder from slipping and shifting.

[0014] Furthermore, the hydraulic cylinder mounting platform is a square platform, and the hydraulic cylinder mounting opening is circular.

[0015] The beneficial effect of adopting the above further technical solution is that a circular hydraulic cylinder mounting opening is arranged on the square hydraulic cylinder mounting platform, which is convenient for placing the hydraulic device and preventing the hydraulic cylinder from slipping and shifting.

[0016] Furthermore, the upper end pull rod is adapted to the flange screw hole, the top end of the flange adapter is an arc-shaped structure, and the top end of the flange adapter is adapted to the side surface of the flange.

[0017] The beneficial effect of adopting the above further technical solution is that the flange adapter size matches the outer diameter surface of the flange and contacts with the flange, so that it will not slip during pulling, causing safety problems such as equipment damage and personal injury. The flange adapter disperses the hydraulic pressure on the pipeline flange surface, reducing slippage and damage to the flange.

[0018] Furthermore, the hydraulic device comprises: a hydraulic cylinder and a piston rod, the piston rod is slidably installed in the hydraulic cylinder, the flange adapter is installed on the piston rod, and the hydraulic pump is connected to the hydraulic cylinder through a hydraulic conduit.

[0019] The beneficial effects of adopting the above further technical solution are: it is easy to drive the piston rod to slide in the hydraulic cylinder through the hydraulic pump, the structure is simple, and the cost is reduced.

[0020] Furthermore, the hydraulic pump is provided with a hydraulic pump rocker.

[0021] The beneficial effect of adopting the above-mentioned further technical solution is: shake the hydraulic pump rocker, the pressure is transmitted to the hydraulic cylinder, pushing the piston rod and the flange adapter to support the other equipment flange together, slowly shake the hydraulic pump rocker, and under the push of the hydraulic pressure, the piston rod transmits the hydraulic pressure to the flange adapter to push the equipment flange of the offset pipe toward the pipe flange side of the offset pipe, pulling the equipment flange and the pipe flange to a coaxial position.

[0022] Furthermore, the upper end pull rod is a cylindrical structure.

[0023] The beneficial effect of adopting the above further technical solution is that the upper end pull rod is a cylindrical structure, which is easy to insert into the positioning flange screw hole and pull the positioning flange end.

[0024] Furthermore, the hydraulic device is a split type hydraulic jack.

[0025] The beneficial effects of adopting the above further technical solution are: simplifying the structure, reducing costs, and facilitating the installation and maintenance of the hydraulic device.

[0026] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a flange dislocation pulling device provided in an embodiment of the utility model.

[0028] Figure 2 A schematic structural diagram of a C-shaped bracket provided in an embodiment of the utility model.

[0029] Figure 3 Schematic diagram of the offset flange structure.

[0030] Figure 4 A schematic diagram of the flange dislocation pulling device and the dislocation flange installation provided in an embodiment of the utility model.

[0031] Figure 5 This is a schematic diagram of a large-diameter flange after being straightened after misalignment.

[0032] Explanation of the accompanying numbers: 1. Support rod; 2. Upper end pull rod; 3. Flange adapter; 4. Piston rod; 5. Reinforcement block; 6. Lower end pull rod; 7. Hydraulic cylinder mounting platform; 8. Hydraulic guide tube; 9. Hydraulic pump; 10. Hydraulic pump rocker; 11. Hydraulic cylinder; 12. Hydraulic cylinder mounting port; 13. Flange connecting bolt; 14. Pipe flange; 15. Equipment flange; 16. Flange screw hole; 17. Nut. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] like Figures 1 to 5 As shown, a flange dislocation pulling device provided by an embodiment of the utility model includes: a support rod 1, an upper end pull rod 2 for inserting into a flange screw hole, a hydraulic device, a flange adapter 3 for abutting against the side of the flange, a lower end pull rod 6, and a hydraulic pump 9. The upper end pull rod 2 is installed on the top side of the support rod 1, the lower end pull rod 6 is installed on the bottom side of the support rod 1, the hydraulic device is installed on the lower end pull rod 6, the flange adapter 3 is installed on the hydraulic device, and the hydraulic pump 9 is connected to the hydraulic device through a pipeline.

[0035] The beneficial effects of the technical solution of the utility model are as follows: the upper end pull rod is used to insert into the screw hole of the positioning flange to pull the positioning flange end. The flange adapter disperses the hydraulic pressure on the pipeline flange surface through the curved surface of the flange adapter to contact the outer side of the pull-off flange, reducing slippage and damage to the flange. Under the action of the hydraulic device, the misaligned flange is pulled back to the correct position. Low cost, simple production, convenient installation and operation, high work efficiency, solve the problem of difficult flange installation of daily large-diameter pipeline equipment.

[0036] The embodiment of the utility model provides a flange dislocation pulling device, which can be a large-caliber flange dislocation pulling device, including a C-shaped bracket (composed of a support rod, an upper end pull rod and a lower end pull rod), a hydraulic device, and a flange adapter.

[0037] Wherein, the C-shaped bracket includes an upper end of the bracket (upper end pull rod) which is cylindrical and is used to insert into the positioning flange screw hole and hold the positioning flange end.

[0038] A square platform (hydraulic cylinder mounting platform 7) is arranged at the lower end of the C-shaped bracket, and a circular base (hydraulic cylinder mounting opening 12) is arranged on the platform (hydraulic cylinder mounting platform 7) for placing the hydraulic device.

[0039] The flange adapter is installed with the jack movable rod (piston rod 4), and the curved surface of the flange adapter contacts the outer side of the pull-off flange.

[0040] The dislocated flange pulling device (dislocated flange pulling device) pulls the dislocated flange back to the correct position under the action of the hydraulic device.

[0041] Years of work practice have proved that when carrying out the installation of flanges of large-diameter dislocated equipment, an auxiliary installation device for flange pulling (flange dislocation pulling device) is needed to solve the problem of difficult installation of flanges of daily large-diameter pipeline equipment.

[0042] In view of the deficiencies in the flange installation technology of pipeline mechanical equipment in the prior art, the technical problem to be solved by the utility model is: how to provide a labor-saving and simple auxiliary installation device that can effectively solve the problem of pipeline flanges and equipment connecting flanges (equipment flanges) on large-diameter pipelines being misaligned due to large stress, resulting in difficulties in installing pipeline equipment.

[0043] An embodiment of the utility model provides a large-diameter offset flange pulling device (flange offset pulling device), which includes a C-type bracket. The bracket is similar to a C-type structure and is called a C-type bracket. The upper end of the C-type bracket is a cylindrical pull rod (upper end pull rod 2), which can be inserted into the flange screw hole to pull the positioning flange end. A square platform (hydraulic cylinder mounting platform 7) is added to the lower end of the C-type bracket. A circular base (hydraulic cylinder mounting port 12) is provided on the platform (hydraulic cylinder mounting platform 7) for placing a split hydraulic device. The hydraulic device is a split hydraulic jack. A flange adapter is installed on the top of the piston rod of the hydraulic jack, which contacts the outer side of the offset flange through the flange adapter.

[0044] Preferably, the C-shaped bracket includes an upper pull rod, a support rod, and a hydraulic device base (a hydraulic cylinder mounting platform 7 and a hydraulic cylinder mounting port 12) to form a C-shaped structure, and the bracket (C-shaped bracket) is made of high-strength steel.

[0045] Preferably, the diameter of the upper end pull rod matches the inner diameter of the flange screw hole, and the length matches the depth of the flange screw hole.

[0046] Preferably, the length of the cross bar (support bar 1) is consistent with the total length of the hydraulic jack and the force adapter block (flange adapter 3).

[0047] Preferably, the lower end of the C-shaped bracket is twice as long as the thickness of the flange, and a reinforcing connecting block (reinforcing block 5) is provided at the connection with the cross bar (support rod 1), and a hydraulic jack base (hydraulic cylinder mounting port 12) is provided at the tail end. The size of the base is compatible with the bottom of the hydraulic jack, so the hydraulic jack can be easily installed.

[0048] Preferably, the hydraulic jack is a cylindrical jack, and the telescopic top rod (piston rod 4) of the jack can be installed with a flange adapter, and the size of the flange adapter matches and contacts the outer diameter surface of the flange.

[0049] According to the above scheme, a pulling device for misaligned flanges in the connection between large-diameter high-pressure pipelines and equipment flanges is made (flange misalignment pulling device, which can be made according to flanges with DN406 and PN900 pound diameters). When the misaligned flanges cannot be directly installed with connecting bolts during equipment maintenance, the device (flange misalignment pulling device) can be used to insert the upper end pull rod of the C-type bracket from the outside of the positioning flange into a screw hole of the flange.

[0050] The hydraulic jack is installed on the base at the lower end of the bracket (C-type bracket), and the telescopic rod (piston rod 4) is installed with a force adapter (flange adapter 3) in contact with the side of the other flange. Through the action of the jack during pressure application, the two flanges exert force on each other, and after acting on the pipeline, the staggered flange sections are slowly aligned until the flange connecting bolts 13 are easily inserted into the screw holes (flange screw holes 16) of the two flanges. After the bolts are installed, the hydraulic pressure is removed and the C-type bracket is removed to complete the operation. During pulling, the pressure number can be observed in real time through the pressure gauge to avoid excessive force to damage the pipeline.

[0051] The auxiliary installation device has the characteristics of low development cost, simple production, convenient installation and operation, strong practicality and high work efficiency. It solves the difficulty of installing the misaligned flange in place, is safe and reliable, saves time and effort, and has extremely high industry promotion value.

[0052] like Figures 1 to 5 As shown, further, the upper end pull rod 2 and the lower end pull rod 6 are located on the same side of the support rod 1, and the support rod 1, the upper end pull rod 2 and the lower end pull rod 6 form a C-shaped structure.

[0053] The beneficial effects of adopting the above further technical solution are: it is convenient to insert the upper end pull rod into the screw hole of the positioning flange to pull the positioning flange end. It is convenient to contact the outer side of the pulled flange through the curved surface of the flange adapter to disperse the hydraulic pressure on the pipeline flange surface, reduce slippage and damage to the flange. It is convenient to pull the misaligned flange back to the correct position under the action of the hydraulic device.

[0054] like Figures 1 to 5As shown, further, a reinforcing block 5 is provided at the connection between the lower end tie rod 6 and the support rod 1, and the support rod 1, the upper end tie rod 2 and the lower end tie rod 6 are all made of steel.

[0055] The beneficial effects of adopting the above further technical solution are: avoiding deformation and fracture of the bracket caused by large hydraulic pressure to ensure reliability of use and improving the load strength of the flange dislocation drawing device.

[0056] like Figures 1 to 5 As shown, further, a hydraulic cylinder mounting platform 7 is provided on the side of the lower end pull rod 6 away from the support rod 1, and a hydraulic cylinder mounting port 12 for mounting a hydraulic device is provided on the hydraulic cylinder mounting platform 7.

[0057] The beneficial effect of adopting the above further technical solution is that a hydraulic cylinder mounting opening is provided on the hydraulic cylinder mounting platform for placing the hydraulic device to prevent the hydraulic cylinder from slipping and shifting.

[0058] like Figures 1 to 5 As shown, further, the hydraulic cylinder mounting platform 7 is a square platform, and the hydraulic cylinder mounting opening 12 is circular.

[0059] The beneficial effect of adopting the above further technical solution is that a circular hydraulic cylinder mounting opening is arranged on the square hydraulic cylinder mounting platform, which is convenient for placing the hydraulic device and preventing the hydraulic cylinder from slipping and shifting.

[0060] like Figures 1 to 5 As shown, further, the upper end pull rod 2 is adapted to the flange screw hole 16, the top end of the flange adapter 3 is an arc-shaped structure, and the top end of the flange adapter 3 is adapted to the side surface of the flange.

[0061] The beneficial effect of adopting the above further technical solution is that the flange adapter size matches the outer diameter surface of the flange and contacts with the flange, so that it will not slip during pulling, causing safety problems such as equipment damage and personal injury. The flange adapter disperses the hydraulic pressure on the pipeline flange surface, reducing slippage and damage to the flange.

[0062] like Figures 1 to 5 As shown, further, the hydraulic device includes: a hydraulic cylinder 11 and a piston rod 4, the piston rod 4 is slidably installed in the hydraulic cylinder 11, the flange adapter 3 is installed on the piston rod 4, and the hydraulic pump 9 is connected to the hydraulic cylinder 11 through a hydraulic conduit 8.

[0063] The beneficial effects of adopting the above further technical solution are: it is easy to drive the piston rod to slide in the hydraulic cylinder through the hydraulic pump, the structure is simple, and the cost is reduced.

[0064] like Figures 1 to 5 As shown, further, a hydraulic pump rocker 10 is provided on the hydraulic pump 9.

[0065] The beneficial effect of adopting the above-mentioned further technical solution is: shake the hydraulic pump rocker, the pressure is transmitted to the hydraulic cylinder, pushing the piston rod and the flange adapter to support the other equipment flange together, slowly shake the hydraulic pump rocker, and under the push of the hydraulic pressure, the piston rod transmits the hydraulic pressure to the flange adapter to push the equipment flange of the offset pipe toward the pipe flange side of the offset pipe, pulling the equipment flange and the pipe flange to a coaxial position.

[0066] like Figures 1 to 5 As shown, further, the upper end pull rod 2 is a cylindrical structure.

[0067] The beneficial effect of adopting the above further technical solution is that the upper end pull rod is a cylindrical structure, which is easy to insert into the positioning flange screw hole and pull the positioning flange end.

[0068] like Figures 1 to 5 As shown, further, the hydraulic device is a split hydraulic jack.

[0069] The beneficial effects of adopting the above further technical solution are: simplifying the structure, reducing costs, and facilitating the installation and maintenance of the hydraulic device.

[0070] Large-diameter pipelines and equipment are connected by flange bolts. There are 20 flange bolt holes 16, one end is the pipeline flange 14, and the other end is the equipment flange 15. During pipeline operation, the flanges are often disassembled and assembled. There are many large stresses in pipeline installation, which causes the flanges to be misaligned with each other, and the internal bolt holes are also misaligned. Figure 3 As shown, the flange connection bolts 13 cannot be completely inserted into the flange screw holes 16 on both sides, resulting in flange installation failure, which is time-consuming and labor-intensive.

[0071] The large-caliber offset flange pulling device (flange offset pulling device) provided in the embodiment of the utility model plays a key role. The large-caliber offset flange pulling device (flange offset pulling device) includes a C-shaped bracket and a hydraulic device, such as Figure 1 , Figure 3 As shown, the C-type bracket includes an upper end tie rod 2, the upper end tie rod 2 is connected to the support rod 1, the support rod 1 is connected to the lower end tie rod 6, and a reinforcing block 5 is provided at the corner to strengthen the firmness of the C-type bracket. A square hydraulic cylinder mounting platform 7 is provided at the tail end of the lower end tie rod 6, as shown in FIG. Figure 2 As shown, a circular hydraulic cylinder mounting opening 12 is designed on the hydraulic cylinder mounting platform 7 to prevent the hydraulic cylinder 11 from slipping and shifting, thereby forming a C-shaped pulling bracket.

[0072] like Figure 4As shown, the upper end tie rod 2 of the C-shaped bracket is inserted into a flange screw hole 16 at the farthest end of the misaligned pipe flange 14, so that the C-shaped bracket can firmly hold the misaligned pipe flange 14.

[0073] like Figure 1 and Figure 4 As shown, the hydraulic device includes a hydraulic cylinder 11, a piston rod 4, a flange adapter 3, a hydraulic conduit 8, a hydraulic pump 9, and a hydraulic pump rocker 10. The piston rod 4 in the hydraulic cylinder 11 is connected to the flange adapter 3, the hydraulic cylinder 11 and the hydraulic pump 9 are connected by the hydraulic conduit 8, and the hydraulic pump 9 is provided with a hydraulic pump rocker 10. When the hydraulic pump rocker 10 is shaken, the pressure is transmitted to the hydraulic cylinder 11, and the piston rod 4 and the flange adapter 3 are pushed together to support the other equipment flange 15. The hydraulic pump rocker 10 is slowly shaken. Under the push of the hydraulic pressure, the piston rod 4 transmits the hydraulic pressure to the flange adapter 3 and pushes the equipment flange 15 of the offset pipe to move toward the pipe flange 14 side of the offset pipe, and the equipment flange 15 and the pipe flange 14 are pulled to a coaxial position.

[0074] Figure 4 One side of the middle flange adapter 3 is completely in contact with the side of the equipment flange 15, so that it will not slip during pulling, causing safety issues such as equipment damage and personal injury.

[0075] like Figure 5 As shown, after the dislocated pipe flange 14 on one side and the dislocated equipment flange 15 on the other side are coaxial under the pulling action of hydraulic pressure, the flange connecting bolts 13 can be easily inserted into the flange screw holes 16 of the two flanges, and the nuts 17 can be installed. In this way, the large-diameter dislocated flange pulling device (flange dislocation pulling device) can be completely removed, and then the last bolt can be installed.

[0076] The C-type bracket can be manufactured solely from materials with better strength to avoid deformation and breakage of the bracket caused by high hydraulic pressure and ensure reliability in use.

[0077] The embodiment of the utility model provides a large-caliber dislocated flange pulling device (flange dislocated pulling device), including a C-shaped bracket, one end of the bracket can be inserted into a screw hole (flange screw hole 16) of the equipment flange 15, the other end of the bracket has a square plate (hydraulic cylinder mounting platform 7), the support rod and the square platform bracket have a reinforcing connection block, the square plate can be installed with a hydraulic device base (hydraulic cylinder mounting port 12), a flange adapter is installed on the hydraulic device telescopic rod (piston rod 4), the concave surface of the flange adapter fits the side of the pipeline flange, the size is adapted, the hydraulic device telescopic rod is pressed out by hydraulic pressure operation, the flange adapter disperses the hydraulic pressure on the pipeline flange surface, reducing slippage and damage to the flange; the two flanges move from the dislocated position to the parallel position under the interaction of hydraulic pressure, and the flange connection screw (flange connection bolt 13) is easily inserted into the flange screw hole 16 of the two flanges to complete the installation of the flange. The utility model has the characteristics of simple structure, simple operation, safety and labor saving, and is very suitable for solving the problem of large-caliber dislocated flanges being difficult to install.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A flange dislocation pulling device, characterized in that: include: A support rod, an upper pull rod for inserting into a flange screw hole, a hydraulic device, a flange adapter for abutting against the flange side, a lower pull rod, and a hydraulic pump. The upper pull rod is installed on the top side of the support rod, the lower pull rod is installed on the bottom side of the support rod, the hydraulic device is installed on the lower pull rod, the flange adapter is installed on the hydraulic device, and the hydraulic pump is connected to the hydraulic device through a pipeline.

2. A flange dislocation pulling device according to claim 1, characterized in that: The upper pull rod and the lower pull rod are located on the same side of the support rod, and the support rod, the upper pull rod and the lower pull rod form a C-shaped structure.

3. A flange dislocation pulling device according to claim 1, characterized in that: A reinforcing block is provided at the connection between the lower end pull rod and the support rod, and the support rod, the upper end pull rod and the lower end pull rod are all made of steel.

4. A flange dislocation pulling device according to claim 1, characterized in that: A hydraulic cylinder mounting platform is provided on one side of the lower end pull rod away from the support rod, and a hydraulic cylinder mounting port for mounting a hydraulic device is provided on the hydraulic cylinder mounting platform.

5. A flange dislocation pulling device according to claim 4, characterized in that: The hydraulic cylinder mounting platform is a square platform, and the hydraulic cylinder mounting opening is circular.

6. A flange dislocation drawing device according to claim 1, characterized in that: The upper end pull rod is matched with the flange screw hole, the top end of the flange adapter is an arc-shaped structure, and the top end of the flange adapter is matched with the side surface of the flange.

7. A flange dislocation pulling device according to claim 1, characterized in that: The hydraulic device comprises: a hydraulic cylinder and a piston rod, wherein the piston rod is slidably mounted in the hydraulic cylinder, the flange adapter is mounted on the piston rod, and the hydraulic pump is connected to the hydraulic cylinder via a hydraulic conduit.

8. The flange dislocation pulling device according to claim 1, characterized in that: The hydraulic pump is provided with a hydraulic pump rocker.

9. The flange dislocation drawing device according to claim 1, characterized in that: The upper end pull rod is a cylindrical structure.

10. The flange dislocation drawing device according to claim 1, characterized in that: The hydraulic device is a split type hydraulic jack.

Images