Screw-down cylinder hoisting device and application method thereof

Abstract

The invention belongs to the technical field of rolling mill equipment installation, and particularly relates to a screw-down cylinder hoisting device and an application method thereof.The screw-down cylinder hoisting device comprises an installation base, and the installation base is formed by combining two H-shaped steel cross beams and four H-shaped steel longitudinal beams; the two H-shaped steel cross beams and the two H-shaped steel longitudinal beams in the middle are combined to form a mounting part for accommodating the screw-down cylinder, and supporting plates for placing the screw-down cylinder are arranged on the lower flanges of the H-shaped steel cross beams and the H-shaped steel longitudinal beams; and stabilizing devices are arranged on upper flange plates of the H-shaped steel cross beams and the H-shaped steel longitudinal beams of the mounting parts and used for stabilizing the position of the screw-down cylinder. According to the lifting device provided by the invention, the mounting part is arranged on the mounting base, the screw-down cylinder is arranged in the mounting part, and the position of the screw-down cylinder is stabilized through the stabilizing device, so that the lifting process of the screw-down cylinder is safer through the lifting device provided by the invention. According to the hoisting method provided by the invention, the screw-down cylinder and the rolling mill body equipment are synchronously mounted, the screw-down cylinder pipeline and the rolling mill hydraulic system pipeline are simultaneously subjected to oil flushing, the construction period is shortened, the labor cost is reduced, and the construction is completed in advance, so that a production line is put into production early and benefits are generated early.

Description

Technical Field

[0001] This invention relates to the field of equipment hoisting technology, and in particular to a cylinder hoisting device and its application method. Background Technology

[0002] The pressing cylinder is an important component of the rolling mill, located on the drive side and the top of the operating side frame window. During equipment installation, because the installation location of the pressing cylinder is inconvenient for hoisting, the hydraulic pipeline system is usually flushed first, and the rolling mill roll changing device is debugged first. After the rolling mill roll changing device and limit device are installed and debugged, the pressing cylinder is then sent into the inside of the rolling mill frame for installation using the pressing cylinder replacement device.

[0003] Because the pressing cylinder cannot be installed synchronously with the rolling mill body, its piping also cannot be installed. After the hydraulic piping is installed, it requires ringing, oil flushing, and pipe restoration. Furthermore, since the pressing cylinder's electrical system is installed later, it also needs to be debugged. Traditional installation methods, where the pressing cylinder is installed later, extend the overall construction period and waste significant construction costs. Therefore, developing a device that facilitates the lifting of the pressing cylinder to enable synchronous installation with the rolling mill body, thereby optimizing the pressing cylinder installation process, is one of the important problems that needs to be solved. Summary of the Invention

[0004] In view of the above-mentioned problems in the existing technology, the purpose of the present invention is to provide a device that facilitates the hoisting of the pressing cylinder.

[0005] Another object of the present invention is to provide a method for facilitating the hoisting of a cylinder.

[0006] To solve the above problems, the present invention adopts the following technical solution: a cylinder lifting device, including a mounting base, the mounting base being composed of two H-beams and four H-beams; the two H-beams and the two middle H-beams together form a mounting section for accommodating the cylinder, and the lower flanges of the H-beams and H-beams are provided with support plates for placing the cylinder; the upper flanges of the H-beams and H-beams of the mounting section are provided with stabilizing devices for stabilizing the position of the cylinder. This application combines two H-beams and four H-beams to form a mounting base, and the mounting base is provided with a mounting section for placing the cylinder, thus fixing the position of the cylinder during placement; furthermore, since the lower flanges of the H-beams and H-beams are provided with support plates for placing the cylinder, which cooperate with the base plate to form a placement groove for accommodating the cylinder, this application makes the cylinder lifting process more stable and safer by setting the mounting section in a groove shape.

[0007] Furthermore, the stabilizing device includes a fixed base plate. Specifically, fixed base plates are respectively provided on the upper flange plates of the H-beam crossbeam and H-beam longitudinal beam. A support portion extends upward from the end of the fixed base plate near the pressing cylinder, and the support portion is used to support the periphery of the pressing cylinder. With this configuration, the stabilizing device of this application can ensure a firm position by providing fixed base plates on the upper flange plates of the H-beam crossbeam and H-beam longitudinal beam, and effectively support the pressing cylinder by providing the support portion extending upward near the pressing cylinder. When tilting occurs during hoisting, the support portion can limit the displacement of the pressing cylinder, making the position of the pressing cylinder more stable during hoisting and making the hoisting operation safer.

[0008] Furthermore, the support portion has an arc-shaped curved surface, the shape of which matches the outer edge shape of the pressing cylinder. This design, where the arc-shaped curved surface of the support portion matches the outer edge shape of the pressing cylinder, effectively increases the contact area between the support portion and the pressing cylinder, further improving the stability.

[0009] Furthermore, a rubber sheet is provided on the contact surface between the support and the pressing cylinder, and the rubber sheet is fixed to the curved surface of the support. This design, due to the elasticity of the rubber sheet itself, effectively reduces friction between the pressing cylinder and the support during hoisting, protecting the surface of the pressing cylinder from wear.

[0010] Furthermore, a support plate is provided between the support part and the fixed base plate; the vertical cross-section of the support plate is a right-angled triangle; one right-angled side of the support plate is fixedly connected to the fixed base plate; the other right-angled side is fixedly connected to the support part. By employing this technique, the structural stability of the stabilizing device is further improved by providing a support plate between the support part and the fixed base plate; the support plate also provides further protection when hoisting heavy-duty pressing cylinders.

[0011] Furthermore, reinforcing ribs are provided at the lower corners of the pallet, and these ribs are fixed to the lower flange plates of the H-beam crossbeam and H-beam longitudinal beam. This technical approach makes the bottom structure of the pallet more stable and the hoisting process safer.

[0012] Furthermore, the mounting base has four lifting points at its four corners, namely the first lifting point, the second lifting point, the fifth lifting point, and the sixth lifting point, and the mounting base has a third lifting point and a fourth lifting point on its left side.

[0013] Furthermore, the stabilizing device is fixed to the upper flange plates of the H-beam crossbeam and H-beam longitudinal beam by bolts. This arrangement further ensures the connection between the stabilizing device and the upper flange plates of the H-beam crossbeam and H-beam longitudinal beam. Furthermore, the H-beam longitudinal beam and the upper flange plate of the H-beam combine to form a frame through which the pressing cylinder passes, wherein the opposing surfaces of the H-beam longitudinal beam and the opposing surfaces of the upper flange plate of the H-beam crossbeam are arc-shaped surfaces, and the combination of these arc-shaped surfaces forms an annular channel whose shape matches the outer edge shape of the pressing cylinder.

[0014] This application also provides an application method for implementing the cylinder lifting device as described in claim 1, the application method comprising the following steps:

[0015] Step 1: Fabricate the hoisting device according to the dimensions of the rolling mill stand window and the pressing cylinder;

[0016] Step 2: After the hoisting device is manufactured, non-destructive testing is performed on the welds of the hoisting device to ensure the safety of its use.

[0017] Step 3: Construct a work platform according to the window size of the rolling mill stand and the distance between the two stands, and then use the four balance bars of the upper support roller as support points to install the work platform.

[0018] Step 4: After using a bridge crane, hand hoist, wire rope, shackle, and lifting ring to lift the cylinder into the installation part of the hoisting device, install 4 stabilizing devices on the two H-beams and the two middle H-beams respectively. Use rubber to separate the stabilizing devices from the cylinder to avoid damaging the paint layer of the hydraulic cylinder.

[0019] Step 5: Using the main lifting trench of the bridge crane, the hand-operated hoist, wire rope, and shackles, attach them to the first, second, third, and fourth lifting points of the lifting device. The first and second lifting points use wire rope shackles, while the third and fourth lifting points each use two hand-operated hoists to lift the cylinder. (See...) Figure 3 )

[0020] Step 6: Hang two hand-operated hoists on the auxiliary hooks of the bridge crane for standby;

[0021] Step 7: Operate the bridge crane to send the pressing cylinder into the mill stand window. Workers stand on the work platform and attach the two hand-operated hoists of the bridge crane's auxiliary hook to the fifth and sixth lifting points respectively; (see...) Figure 4 )

[0022] Step 8: Loosen the third and fourth lifting points of the hand-operated hoist on the main lifting trench of the bridge crane, so that the first, second, fifth, and sixth lifting points bear the load; (see...) Figure 5 )

[0023] Step 9: Operate the bridge crane trolley to move the pressing cylinder directly below the installation position;

[0024] Step 10: Operate the main and auxiliary trenches of the bridge crane separately. When the height is close to the installation height, use the hand chain hoist to adjust the height and lift the cylinder into place.

[0025] Step 11: Secure the pressing cylinder to the frame using bolts, and loosen the bolts on the pressing cylinder stabilizing device;

[0026] Step 12: Operate the main and auxiliary troughs of the bridge crane to lower them respectively, and hang the two hand-operated hoists of the main trough of the bridge crane at the third and fourth lifting points respectively and level them;

[0027] Step 13: Loosen the fifth and sixth lifting points of the hand chain hoist in the auxiliary lifting groove of the bridge crane, so that the first, second, third, and fourth lifting points are under stress;

[0028] Step 14: Operate the bridge crane to move the lifting device off the frame for the installation of the next pressing cylinder.

[0029] Using this method for hoisting allows for simultaneous oil flushing of the pressing cylinder pipeline and the rolling mill hydraulic system pipeline, shortening the construction period, reducing labor costs, and enabling the production line to be put into operation and generate benefits sooner.

[0030] Working Principle: A cylinder lifting device includes an installation section composed of two H-beams and four H-beams longitudinal beams. The two H-beams and the two intermediate H-beams longitudinal beams form an installation section that can accommodate the cylinder. The lower flanges of the H-beams and longitudinal beams are provided with support plates for placing the cylinder. The upper flanges of the H-beams and longitudinal beams in the installation section are equipped with stabilizing devices to stabilize the position of the cylinder. This application achieves this by using an installation section that accommodates the cylinder, formed by combining two H-beams and the two intermediate H-beams longitudinal beams, and by providing support plates for placing the cylinder on the lower flanges of the H-beams and longitudinal beams. The upper flanges of the two H-beams and the two intermediate H-beams, and the lower flanges of the two H-beams and the two intermediate H-beams, in conjunction with the support plates, form a groove for accommodating the cylinder. By setting the installation section in a groove shape, the lifting of the cylinder is more stable and safer. This application further enhances safety by installing stabilizing devices on all four sides of the installation section to stabilize the position of the pressing cylinder, making the transport of the pressing cylinder during hoisting safer and improving overall safety. This application also utilizes a hoisting device to pre-install the pressing cylinder, allowing for simultaneous oil flushing of the pressing cylinder pipeline and the rolling mill hydraulic system pipeline, shortening the construction period, reducing labor costs, and enabling the production line to be put into operation and generate profits sooner.

[0031] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0032] 1. This application provides an installation section on the mounting base. The installation section consists of a frame formed by H-beams (horizontal and longitudinal beams) and upper flanges, and a support plate located on the lower flanges of the H-beams. The frame and support plate cooperate to form a placement groove for accommodating the pressing cylinder. By setting the installation section in a groove shape, the position of the pressing cylinder is stable during hoisting, ensuring high safety. Furthermore, this application provides stabilizing devices on the upper flanges of the H-beams (horizontal and longitudinal beams) to stabilize the position of the pressing cylinder, making the transportation of the pressing cylinder during hoisting safer and improving overall safety.

[0033] 2. This application provides six lifting points on the mounting base, and uses different lifting points to lift the cylinder at different stages of the lifting process, making the lifting process more stable.

[0034] 3. This application ensures the stability of the device by setting a fixed base plate on the upper flange plate of the H-beam crossbeam and H-beam longitudinal beam. Furthermore, by setting an upwardly extending support part near the end of the pressing cylinder, effective support is provided for the pressing cylinder. When tilting occurs during hoisting, the support part can limit the displacement of the pressing cylinder, making the pressing cylinder more stable during hoisting and the hoisting operation safer.

[0035] 4. The pallet described in this application is provided with reinforcing ribs at the four lower corners, and the reinforcing ribs are fixed to the lower flange plates of the H-beam crossbeam and H-beam longitudinal beam; this technical means makes the bottom structure of the pallet more stable and the hoisting process safer;

[0036] 5. The application method provided in this application enables simultaneous oil flushing of the pressing cylinder pipeline and the rolling mill hydraulic system pipeline, shortening the construction period, reducing labor costs, and completing the project ahead of schedule so that the production line can be put into operation and generate benefits as soon as possible. Attached Figure Description

[0037] Figure 1 This is a top view of the hoisting device according to an embodiment of this application;

[0038] Figure 2 This is a side view of the hoisting device according to an embodiment of this application;

[0039] Figure 3 This is a schematic diagram of the lifting of the cylinder in an embodiment of this application;

[0040] Figure 4 This is a schematic diagram of the cylinder lifting process in an embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the cylinder lifting process in an embodiment of this application;

[0042] Figure 6 This is a schematic diagram of the tray structure according to an embodiment of this application;

[0043] Among them, 1. H-beam crossbeam, 2. H-beam longitudinal beam, 3. Installation part, 4. Stabilizing device, 11. First lifting point, 12. Second lifting point, 13. Third lifting point, 14. Fourth lifting point, 15. Fifth lifting point, 16. Sixth lifting point, 32. Support plate, 33. Reinforcing rib, 41. Fixed base plate, 42. Support part, 43. Support plate, 44. Bolt, 45. Rubber. Detailed Implementation

[0044] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," and "inner," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0047] Example 1

[0048] This invention provides a cylinder lifting device, including a mounting base composed of two H-beams (horizontal beams 1 and vertical beams 2). The two H-beams (horizontal beams 1 and vertical beams 2) together form a mounting section for accommodating the cylinder. A support plate 32 for placing the cylinder is provided on the lower flange of the H-beams (horizontal beams 1 and vertical beams 2). A stabilizing device 4 is provided on the upper flange of the H-beams (horizontal beams 1 and vertical beams 2) for stabilizing the position of the cylinder. This application provides a mounting section 3 in the middle of the mounting base. The mounting section 3 consists of a frame formed by the upper flanges of the H-beams (vertical beams 2 and horizontal beams 1) and a support plate 32 for placing the cylinder located below the frame. The H-beams (vertical beams 2 and support plate 32) cooperate to form a groove for accommodating the cylinder. By setting the mounting section 3 in a groove shape, the lifting of the cylinder is more stable and safer. This application further stabilizes the position of the pressing cylinder by installing stabilizing devices 4 on the two H-beams 1 and the two intermediate H-beams 2, making the transportation of the pressing cylinder safer and improving safety during hoisting. Since the pressing cylinder's position is fixed, operators can make further adjustments to the installation section 3 according to on-site construction needs.

[0049] It should be noted that, in some embodiments, the mounting part 3 formed by the combination of the two H-beam crossbeams 1 and the two intermediate H-beam longitudinal beams 2 has a relatively high pressing cylinder. The height of the groove of the mounting part 3 cannot guarantee the stability of the pressing cylinder's position, and it may tilt during hoisting due to its high height. Therefore, the stabilizing device 4 described in this application includes a fixed base plate 41. The upper flange plates of the H-beam crossbeams 1 and the two intermediate H-beam longitudinal beams 2 are provided with the fixed base plate 41. A support part 42 extends upward from the end of the fixed base plate 41 near the pressing cylinder. The support part 42 is used to support the periphery of the pressing cylinder. The fixed base plate 41 of the stabilizing device 4 of this application is fixed to the H-beam crossbeams 1 and the two intermediate H-beam longitudinal beams 2, which can ensure the stabilizing device 4 is firmly positioned. Furthermore, by providing an upwardly extending support part 42 near the pressing cylinder, effective support is achieved for the pressing cylinder, making the pressing cylinder more stable during hoisting and the hoisting operation safer. For example, during hoisting, the pressing cylinder may tilt due to turning or collision. By using the support part 42 described in this application, the support part 42 can effectively support the pressing cylinder and prevent it from tilting. In some preferred embodiments, the height of the support part 42 is more than 2 / 3 of the height of the pressing cylinder.

[0050] In some embodiments, the support portion 42 has an arcuate surface, the shape of which matches the outer edge shape of the pressing cylinder. This application adapts the arcuate surface of the support portion 42 to the outer edge shape of the pressing cylinder, effectively increasing the contact area between the support portion 42 and the pressing cylinder, further improving stability. In some preferred embodiments, the support portion 42 and the fixed base plate 41 are integrally formed, effectively ensuring the structural stability of the support portion 42 and the fixed base plate 41.

[0051] In some cases, the pressing cylinder may tilt during hoisting due to turning or collision, causing it to collide with the support part 42. By providing a rubber sheet 45 at the contact surface between the support part 42 and the pressing cylinder, and fixing the rubber sheet 45 to the curved surface of the support part 42, the elasticity of the rubber sheet 45 can effectively reduce friction between the pressing cylinder and the support part 42 during hoisting, protecting the surface of the pressing cylinder from wear and ensuring its integrity.

[0052] To further improve the supporting effect between the support part 42 and the fixed base plate 41, a support plate 43 is provided between the support part 42 and the fixed base plate 41; the vertical cross section of the support plate 43 is a right-angled triangle; one right-angled side of the support plate 43 is fixedly connected to the fixed base plate 41; the other right-angled side is fixedly connected to the support part 42. This application, by providing a support plate 43 between the support part 42 and the fixed base plate 41, further improves the structural stability of the stabilizing device 4; when hoisting the heavy-duty pressing cylinder, the support plate 43 can further provide protection.

[0053] In some preferred embodiments, reinforcing ribs 33 are provided at the lower corners of the pallet, and the reinforcing ribs 33 are fixed to the lower flange plates of the H-beam crossbeam 1 and the H-beam longitudinal beam 2. This makes the bottom structure of the pallet 33 at the bottom of the mounting part 3 more stable and the hoisting process safer. For example, when placing a heavy pressing cylinder, the reinforcing ribs 33 on the pallet 32 ​​can prevent it from deforming under pressure, ensuring safe operation during the hoisting process.

[0054] In some preferred embodiments, such as Figure 6 As shown, a placement hole is provided in the middle of the support plate 32, and the diameter of the placement hole is smaller than the outer edge of the pressing cylinder. When the pressing cylinder is placed on the support plate 32, the placement hole can limit the pressing cylinder and fix its lower position, further improving the stability during the hoisting process. Furthermore, the support plate 32 is square, with a circular hole in the middle for the protruding part of the pressing cylinder piston rod. The diameter of the circular hole is larger than the piston rod diameter but smaller than the cylinder body diameter.

[0055] Preferably, the mounting base described in this application has four lifting points at its four corners, namely the first lifting point 11, the second lifting point 12, the fifth lifting point 15, and the sixth lifting point 16; the third lifting point 13 and the fourth lifting point 14 are located on the left side of the mounting part 3, wherein the mounting part 3 is located slightly to the right of the middle of the H-shaped crossbeam 1.

[0056] This application establishes lifting points at the four corners of the mounting base and on the left side of the mounting section 3. During the lifting of the cylinder, a bridge crane's main lifting groove, hand-operated hoists, wire ropes, shackles, and hooks are used to attach to the 1st, 2nd, 3rd, and 4th lifting points of the lifting device. Points 1 and 2 use wire rope shackles, while points 3 and 4 each use two hand-operated hoists to lift the cylinder, ensuring a smooth lifting process. When the bridge crane delivers the cylinder to the mill frame window, workers stand on the work platform and attach the two hand-operated hoists of the bridge crane's auxiliary hook to the 5th and 6th lifting points respectively. The hand-operated hoists at points 3 and 4 of the bridge crane's main lifting groove are then released, allowing the 1st, 2nd, 5th, and 6th lifting points to bear the load, ensuring a smooth translation during lifting and effectively improving the safety of the lifting operation.

[0057] Furthermore, the stabilizing device 4 is fixed to the upper flange plates of the H-beam crossbeam 1 and the H-beam longitudinal beam 2 by bolts. Specifically, the fixing base 41 of the locking device 4 is fixed to the upper flange plates of the H-beam crossbeam 1 and the H-beam longitudinal beam 2 by bolts.

[0058] In summary, this application includes an installation base composed of two H-beam crossbeams 1 and four H-beam longitudinal beams 2. The two H-beam crossbeams 1 and the two intermediate H-beam longitudinal beams 2 form an installation section that can accommodate the pressing cylinder. The lower flanges of the H-beam crossbeams 1 and H-beam longitudinal beams 2 are provided with support plates 32 for placing the pressing cylinder. The upper flanges of the H-beam crossbeams 1 and H-beam longitudinal beams 2 in the installation section are provided with stabilizing devices 4 to stabilize the position of the pressing cylinder. This application further enhances the stability and safety of the pressing cylinder by incorporating an installation section 3 in the middle of the installation base. The installation section 3 consists of a frame formed by the upper flanges of the H-beam longitudinal beams 2 and H-beam crossbeams 1, and support plates 32 located below the frame. The H-beam longitudinal beams 2 and support plates 32 cooperate to form a placement groove for accommodating the pressing cylinder. By designing the installation section 3 as a groove, the lifting of the pressing cylinder is more stable and safer. This application further enhances safety by installing stabilizing devices 4 on the lower flanges of the H-beam crossbeam 1 and H-beam longitudinal beam 2 to stabilize the position of the pressing cylinder, thus making the transport of the pressing cylinder safer and improving overall safety during hoisting. Additionally, this application provides six lifting points on the mounting base, allowing for the use of different lifting points to hoist the pressing cylinder at different stages of the hoisting process, thereby making the hoisting more stable.

[0059] Example 2

[0060] The present application provides a cylinder lifting device, and its application method includes the following steps:

[0061] Step 1: Fabricate the hoisting device according to the dimensions of the rolling mill stand window and the pressing cylinder;

[0062] Step 2: After the hoisting device is manufactured, non-destructive testing is performed on the welds of the hoisting device to ensure the safety of its use.

[0063] Step 3: Construct a work platform according to the window size of the rolling mill stand and the distance between the two stands, and then use the four balance bars of the upper support roller as support points to install the work platform.

[0064] Step 4: After using a bridge crane, hand hoist, wire rope, shackle, and lifting ring to lift the cylinder into the installation part of the hoisting device, install 4 stabilizing devices 4 on the two H-beams (1) and the two middle H-beams (2). The stabilizing devices 4 and the cylinder are separated by rubber 44 to avoid damage to the paint layer of the hydraulic cylinder.

[0065] Step 5: Using the main lifting trench of the bridge crane, a hand-operated hoist, wire rope, and shackles, attach the crane to the first lifting point 11, the second lifting point 12, the third lifting point 13, and the fourth lifting point 14 of the lifting device. The first lifting point 11 and the second lifting point 12 are wire rope shackles. Two hand-operated hoists are attached to the third lifting point 13 and the fourth lifting point 14 respectively to lift the cylinder. (See...) Figure 3 )

[0066] Step 6: Hang two hand-operated hoists on the auxiliary hooks of the bridge crane for standby;

[0067] Step 7: Operate the bridge crane to send the pressing cylinder into the mill stand window. Construction workers stand on the work platform and attach the two hand-operated hoists of the bridge crane's auxiliary hook to positions 5 (lifting point 15) and 6 (lifting point 16) respectively; (see...) Figure 4 )

[0068] Step 8: Loosen the third lifting point 13 and the fourth lifting point 14 of the hand-operated hoist in the main lifting trench of the bridge crane, so that the first lifting point 11, the second lifting point 12, the fifth lifting point 15, and the sixth lifting point 16 bear the load; (see...) Figure 5 )

[0069] Step 9: Operate the bridge crane trolley to move the pressing cylinder directly below the installation position;

[0070] Step 10: Operate the main and auxiliary trenches of the bridge crane separately. When the height is close to the installation height, use the hand chain hoist to adjust the height and lift the cylinder into place.

[0071] Step 11: Secure the pressing cylinder to the frame using bolts, and loosen the bolts on the pressing cylinder stabilizing device 4.

[0072] Step 12: Lower the main and auxiliary troughs of the bridge crane separately, and hang the two hand-operated hoists of the main trough of the bridge crane at the third lifting point 13 and the fourth lifting point 14 respectively and level them.

[0073] Step 13: Loosen the fifth lifting point 15 and the sixth lifting point 16 of the hand chain hoist in the auxiliary lifting groove of the bridge crane, so that the first lifting point 11, the second lifting point 12, the third lifting point 13, and the fourth lifting point 14 are under stress.

[0074] Step 14: Operate the bridge crane to move the lifting device off the frame for the installation of the next pressing cylinder.

[0075] In summary, this application places the pressing cylinder in the placement slot of the mounting section and, by installing a stabilizing device on the mounting section, ensures the stability of the pressing cylinder's position during transportation. Furthermore, by providing six lifting points on the mounting base, different lifting points are used to lift the pressing cylinder at different stages of the lifting process, making the lifting more stable. This allows for simultaneous oil flushing of the pressing cylinder pipeline and the rolling mill hydraulic system pipeline, shortening the construction period, reducing labor costs, and enabling the production line to be put into operation and generate profits sooner.

[0076] Finally, it should be pointed out that the above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A cylinder lifting device, characterized in that, The device includes a mounting base, which is composed of two H-beam crossbeams (1) and four H-beam longitudinal beams (2). The two H-beam crossbeams (1) and the two middle H-beam longitudinal beams (2) are combined to form a mounting part that can accommodate the pressing cylinder. The lower flanges of the H-beam crossbeams (1) and H-beam longitudinal beams (2) are provided with support plates (32) for placing the pressing cylinder. The upper flanges of the H-beam crossbeams (1) and H-beam longitudinal beams (2) of the mounting part are provided with stabilizing devices (4) to stabilize the position of the pressing cylinder.

2. The cylinder lifting device according to claim 1, characterized in that, The stabilizing device (4) includes a fixed base plate (41). Specifically, the upper flanges of the H-beam crossbeam (1) and the H-beam longitudinal beam (2) are respectively provided with fixed base plates (41). The fixed base plate (41) extends upward to the end near the pressing cylinder and is provided with a support part (42). The support part (42) is used to support the periphery of the pressing cylinder.

3. The cylinder lifting device according to claim 2, characterized in that, The support part (42) has an arc-shaped surface, and the shape of the arc-shaped surface is adapted to the shape of the outer edge of the pressing cylinder.

4. The cylinder lifting device according to claim 3, characterized in that, The contact surface between the support part (42) and the pressing cylinder is provided with rubber, and the rubber is fixed on the curved surface of the support part (42).

5. The cylinder lifting device according to claim 2, characterized in that, A support plate (43) is provided between the support part (42) and the fixed base plate (41); the vertical section of the support plate (43) is a right triangle; one right-angled side of the support plate (43) is fixedly connected to the fixed base plate (41); the other right-angled side is fixedly connected to the support part (42).

6. The cylinder lifting device according to claim 1, characterized in that, A reinforcing rib (33) is provided below the pallet (32), and the reinforcing rib is fixed to the lower flange of the H-shaped steel longitudinal beam (2).

7. The cylinder lifting device according to claim 1, characterized in that, The H-beam longitudinal beam (2) of the mounting base is provided with four lifting points at its four corners, namely the first lifting point (11), the second lifting point (12), the fifth lifting point (15), and the sixth lifting point (16); the H-beam longitudinal beam (2) on the left side of the pressing cylinder is provided with the third lifting point (13) and the fourth lifting point (14).

8. The cylinder lifting device according to claim 1, characterized in that, The stabilizing device (4) is fixed to the upper flange plate of the H-beam crossbeam (1) and the H-beam longitudinal beam (2) by bolts.

9. The cylinder lifting device according to claim 1, characterized in that, The H-beam longitudinal beam (2) and the upper flange of the H-beam (1) are combined to form a frame through which the pressing cylinder passes. The opposing surfaces of the H-beam longitudinal beam (2) and the opposing surfaces of the upper flanges of the H-beam transverse beam (1) are arc-shaped. The arc-shaped surfaces are combined to form an annular channel, the shape of which is adapted to the shape of the outer edge of the pressing cylinder.

10. A method for implementing the cylinder lifting device as described in claim 1, characterized in that, The application method includes the following steps: Step 1: Fabricate the hoisting device according to the dimensions of the rolling mill stand window and the pressing cylinder; Step 2: After the hoisting device is manufactured, non-destructive testing is performed on the welds of the hoisting device to ensure the safety of its use. Step 3: Construct a work platform according to the window size of the rolling mill stand and the distance between the two stands, and then use the four balance bars of the upper support roller as support points to install the work platform. Step 4: After using a bridge crane, hand hoist, wire rope, shackle, and lifting ring to lift the cylinder into the installation part of the lifting device, install 4 stabilizing devices (4) on the two H-beams (1) and the two middle H-beams (2). Use rubber (44) to separate the stabilizing devices (4) from the cylinder to avoid damage to the paint layer of the hydraulic cylinder. Step 5: Using the main lifting groove of the bridge crane, the hand chain hoist, the wire rope, the shackle, and hang it to the first lifting point (11), the second lifting point (12), the third lifting point (13), and the fourth lifting point (14) of the lifting device. The first lifting point (11) and the second lifting point (12) are wire rope shackles. The third lifting point (13) and the fourth lifting point (14) are each hung with two hand chain hoists to lift the cylinder. Step 6: Hang two hand-operated hoists on the auxiliary hooks of the bridge crane for standby; Step 7: Operate the bridge crane to send the pressing cylinder into the window of the rolling mill frame. The construction personnel stand on the work platform and hang the two hand-operated hoists of the bridge crane auxiliary hook at the fifth lifting point (15) and the sixth lifting point (16) respectively. Step 8: Loosen the third lifting point (13) and fourth lifting point (14) of the hand chain hoist in the main lifting groove of the bridge crane, so that the first lifting point (11), second lifting point (12), fifth lifting point (15), and sixth lifting point (16) are subjected to force; Step 9: Operate the bridge crane trolley to move the pressing cylinder directly below the installation position; Step 10: Operate the main and auxiliary trenches of the bridge crane separately. When the height is close to the installation height, use the hand chain hoist to adjust the height and lift the cylinder into place. Step 11: Secure the pressing cylinder to the frame using bolts, and loosen the bolts on the pressing cylinder stabilizing device 4. Step 12: Lower the main and auxiliary troughs of the bridge crane respectively, and hang the two hand-operated hoists of the main trough of the bridge crane at the third lifting point (13) and the fourth lifting point (14) respectively and level them; Step 13: Loosen the fifth lifting point (15) and the sixth lifting point (16) of the hand chain hoist of the auxiliary lifting groove of the bridge crane, so that the first lifting point (11), the second lifting point (12), the third lifting point (13), and the fourth lifting point (14) are subjected to force; Step 14: Operate the bridge crane to move the lifting device off the frame for the installation of the next pressing cylinder.

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