Door-shaped frame device for large-scale equipment installation and application method of door-shaped frame device

Abstract

The invention discloses a door-shaped frame device for mounting large equipment and an application method of the door-shaped frame device. The door-shaped frame device comprises an overturning rack and two door-shaped side frames, wherein the two door-shaped side frames are oppositely arranged in parallel at an interval; the overturning rack is used for clamping and fixing large equipment to be installed. Special lifting lugs are fixed to the two sides, opposite to the two door-shaped side frames, of the overturning rack, and the special lifting lugs are fixedly connected with the overturning rack through bolts. The two door-shaped side frames are fixedly connected through a connecting rod located above the two door-shaped side frames. Hydraulic lifting cylinders are installed on cross beams of the two door-shaped side frames and connected with the special lifting lugs through steel strands. The application method comprises the following steps: firstly lifting the to-be-mounted large equipment in a horizontal state to a certain height to be separated from a contact surface, then sliding to a mounting position, and finally matching with hoisting equipment to erect the to-be-mounted large equipment. The device is reasonable in structural design, capable of being suitable for installation of overweight and oversized equipment, good in operation stability, convenient to operate, good in safety, low in cost and good in application prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment installation, and relates to a door-type frame device for large equipment installation and an application method thereof, and in particular to a door-type frame device which is particularly suitable for large equipment installation and can be used for synchronous walking and lifting, and a method for completing the installation of oversized and overweight equipment using the door-type frame device. Background Art

[0002] In large-scale metallurgical engineering projects, under the conditions of limited site, space and crane load in the workshop, the main methods used to install large equipment are double-machine lifting method, fixed hydraulic lifting method and traditional rotation balancing method. The above three methods have their own advantages and disadvantages. At present, with the increasing demand for wide and thick plates in the domestic and foreign markets, the large equipment for producing wide and thick plates is getting bigger and bigger in size and heavier in weight. The above three installation methods all have certain limitations and instability. Specifically, 1) The application premise of the double-machine lifting method is that the crane in the workshop must be able to meet the lifting load requirements, but when controlling investment costs, steel companies often only consider that the crane in the production line workshop can only meet the production needs, and will not consider increasing the lifting load of the crane for the installation of large equipment. The double-machine lifting method is difficult to meet the needs of overweight equipment installation; 2) Fixed hydraulic lifting method, as the size of the wide and thick plate rolling mill continues to increase, the height of some super-large rolling mill equipment has even exceeded 18m, and its lifting and lifting stroke is bound to increase accordingly, and the fixed frame vertical The height of the column must be at least 18m to meet the lifting requirements. When lifting and lowering at such a high altitude, the higher the center of gravity of the equipment, the worse the stability, which poses certain safety hazards. 3) The traditional rotation balancing method has complex processes and requires many supporting assembly parts, especially during the lifting and lowering process, which takes a long time to operate. At the same time, the lifting, lowering, extraction and addition of pads of multiple hydraulic cylinders are all operated manually. The synchronization of lifting and lowering is difficult to control and the stability is poor. In addition, a lot of manpower and material resources are required, which is very time-consuming and labor-intensive.

[0003] Therefore, it is of great practical significance to develop a method for installing oversized and overweight equipment with low cost, good applicability, good synchronization, convenient operation and good safety. Summary of the invention

[0004] Due to the above-mentioned defects in the prior art, the present invention provides a method for installing extra-large and extra-heavy equipment which is low in cost, has good applicability, good synchronization, is easy to operate and has good safety. Specifically, it provides a door-type frame device which is particularly suitable for the installation of large equipment and can be used for both synchronous movement and lifting, as well as a method for completing the installation of extra-large and extra-heavy equipment using the door-type frame device, so as to overcome the defects of the current large equipment installation method that is time-consuming, labor-intensive, difficult to operate, has poor safety and is difficult to apply to the installation of extra-large and extra-heavy equipment.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A door-type frame device for installing large equipment, comprising a turning platform, and two door-type side frames arranged oppositely and in parallel with each other;

[0007] The flip stand is used to clamp and fix the large equipment to be installed. The flip stand is fixed with special lifting ears on the two sides opposite to the two door-shaped side frames, and the special lifting ears are fixedly connected to the flip stand by a latch;

[0008] The two door-type side frames are fixedly connected by a connecting rod located above the two door-type side frames (the two door-type side frames are symmetrically arranged);

[0009] Hydraulic lifting cylinders are installed on the cross beams of the two door-type side frames, and the hydraulic lifting cylinders are connected to special lifting ears through steel strands.

[0010] The door-type frame device for large-scale equipment installation of the present invention has a reasonable structural design. The door-type frame device cooperates with the turning platform to not only lift the large-scale equipment to be installed, but also because the turning platform and the special lifting ears are fixed by pins, that is, the turning platform can be rotated with the pins as the rotation center, and can cooperate with the lifting equipment to turn over the large-scale equipment to be installed clamped and fixed by the turning platform; the hydraulic lifting cylinder of the door-type frame device is used as the main lifting equipment, and the lifting equipment in the factory is only used as an auxiliary, which can be suitable for the installation needs of overweight equipment; it has good operating stability, convenient operation, good synchronization, good safety of the overall process and relatively low overall cost, and has great application prospects.

[0011] As the preferred technical solution:

[0012] A door-shaped frame device for installation of large equipment as described above, wherein the connection between the cross beam and the two vertical bars in the door-shaped side frame is provided with a triangular support for strengthening the structure to ensure the stability of the frame device;

[0013] A side support is provided between the door-shaped side frame and the connecting rod to improve the overall stability of the door-shaped frame device.

[0014] In the door-type frame device for installing large equipment as described above, a hole is opened in the middle of the crossbeam of the door-type side frame and a hydraulic lifting cylinder is installed at the hole.

[0015] A portal frame device for installation of large equipment as described above, further comprising a walking device for driving the portal frame device to move;

[0016] The two door-type side frames are arranged on two tracks which are parallel to each other and arranged at intervals. The walking device includes two sets of hydraulic push cylinders which correspond to the two door-type side frames respectively. The two sets of hydraulic push cylinders synchronously drive the two door-type side frames to slide along the tracks.

[0017] A portal frame device for large equipment installation as described above further includes a central control unit;

[0018] The central control unit is connected with the control components of the hydraulic lifting cylinder and the hydraulic pushing cylinder, and the control of the hydraulic lifting cylinder and the hydraulic pushing cylinder can be realized through the central control unit. The hydraulic lifting cylinder and the hydraulic pushing cylinder are both equipped with oil supply and return pipes.

[0019] A portal frame device for installation of large equipment as described above, wherein the special lifting lug comprises two mutually parallel hanging lug steel plates;

[0020] The two hanging ear steel plates are provided with sleeve through holes matching each other, the hanging ear shaft sleeve is respectively welded and fixed to the two hanging ear steel plates after passing through the sleeve through holes, both ends of the hanging ear shaft sleeve are provided with round flange reinforcement plates, the round flange reinforcement plates are parallel to the hanging ear steel plates and welded closely, the two hanging ear steel plates are also welded and fixed by a T-shaped connecting plate, the horizontal plate of the T-shaped connecting plate is provided with a through hole for the steel strand to pass through, and a plurality of reinforcing rib plates are welded on the T-shaped connecting plate;

[0021] The steel strands are fixed to the lifting anchors after passing through the through holes of the horizontal plate, and a plurality of stop blocks for limiting the lifting anchors are arranged below the horizontal plate.

[0022] A door-type frame device for large equipment installation as described above, wherein the turning platform comprises a square frame structure, and the square frame structure matches the large equipment to be installed;

[0023] Both sides of the square frame structure are provided with stand shaft sleeves matching with the latch pins.

[0024] The present invention also provides an application method of the door-type frame device for large equipment installation as described above, comprising the following steps:

[0025] (1) Install the door frame device;

[0026] (2) Fix the flip platform in the middle of the large equipment to be installed to ensure that the large equipment to be installed can remain horizontal and stable when the flip platform is lifted, and fix the flip platform to the special lifting lugs with pins;

[0027] (3) The central control unit controls the hydraulic lifting cylinders to synchronously lift both sides of the flip platform so that the large equipment to be installed is out of contact with the installation surface;

[0028] (4) The central control unit controls the hydraulic push cylinder to synchronously drive the two door-type side frames to slide along the track to the position where the equipment is to be installed;

[0029] (5) Use the lifting equipment to lift the bottom end of the large equipment to be installed and slowly lower the bottom end of the large equipment to be installed. The large equipment to be installed will slowly rotate with the pin as the rotation center. At the same time, the central control unit controls the hydraulic lifting cylinder to synchronously lift both sides of the flip platform. The lifting equipment and the hydraulic lifting cylinder work together until the large equipment to be installed is in a vertical state, and ensure that the large equipment to be installed is directly above the equipment to be installed;

[0030] (6) The central control unit controls the hydraulic lifting cylinder to synchronously descend the flip platform until the large equipment to be installed falls on the equipment bottom plate, and the large equipment to be installed is fixed to the equipment bottom plate with bolts.

[0031] The above method uses a set of door-type frame devices that can move synchronously and be used for lifting. First, the large equipment to be installed in a horizontal state is lifted to a certain height to leave the contact surface, and then it slides to the installation position. Finally, it cooperates with the lifting equipment to stand up the large equipment to be installed, thereby completing the rapid and safe installation of the large equipment.

[0032] The above method perfectly combines "stabilization, rotation, lifting and placement" in one go, and can quickly install the large equipment to be installed. It not only greatly improves work efficiency and reduces labor intensity, but also ensures the installation accuracy of large equipment and the safety of operators.

[0033] The above method has certain similarities with the traditional rotation balancing method. It uses a hydraulic lifting cylinder and the factory's crane and other lifting equipment to achieve rotation (the lifting speed can reach 5~6m / h). It breaks through the traditional process of pausing and adding or subtracting steel pads every 200mm of lifting or 200mm of falling back. Each time takes about 1 hour. At the same time, four groups of personnel (4 people in each group) are required to remove or add steel pads near the positions of the four columns and beams respectively. The time-consuming and labor-intensive defects have greatly improved work efficiency, reduced labor intensity and safety risks, and shortened the construction period.

[0034] As the preferred technical solution:

[0035] According to the application method described above, after the large equipment to be installed falls on the equipment base plate, check whether the size meets the requirements, and then fix the large equipment to be installed;

[0036] The lifting equipment is a crane.

[0037] In the application method as described above, a supporting steel bench is installed between the turning platform and the top of the large equipment to be installed to ensure that there is no looseness between the top of the large equipment to be installed and the turning platform during the installation process.

[0038] The above technical solution is only a feasible technical solution of the present invention, and the protection scope of the present invention is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0039] The above invention has the following advantages or beneficial effects:

[0040] (1) The door-type frame device for installing large equipment of the present invention has a reasonable structural design. The door-type frame device cooperates with the turning platform to not only lift the large equipment to be installed, but also because the turning platform is fixed to the special lifting lug by a latch, that is, the turning platform can rotate with the latch as the rotation center, and can cooperate with the lifting equipment to turn over the large equipment to be installed clamped and fixed by the turning platform, thereby completing the installation of the large equipment;

[0041] (2) The portal frame device for installation of large equipment of the present invention uses the hydraulic lifting cylinder of the portal frame device as the main lifting device, and the in-plant hoisting equipment is only used as an auxiliary device, which can be suitable for the installation needs of overweight equipment;

[0042] (3) The door-type frame device for large equipment installation of the present invention has good operating stability, convenient operation, good synchronization, good overall process safety and relatively low overall cost;

[0043] (4) The application method of the portal frame device for large equipment installation of the present invention not only overcomes the problems of large investment, high labor input and low efficiency in the traditional rotation balancing method assembly process, but also greatly improves work efficiency, reduces labor intensity and safety risks, shortens the construction period, and has great application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention and its features, aspects and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings, in which like reference numerals indicate like parts throughout the drawings, with emphasis placed on illustrating the gist of the present invention.

[0045] Figure 1 A top view of a door-type frame device for installing large equipment according to the present invention;

[0046] Figure 2 for Figure 1 aa cross-section;

[0047] Figure 3 for Figure 2 bb section;

[0048] Figure 4 It is the front view of the special lifting lug I;

[0049] Figure 5 It is a left view of the special lifting lug I;

[0050] Figure 6 It is a schematic diagram of the connection node between the special lifting lug I and the steel strand I;

[0051] Figure 7 A top view of the flip stand;

[0052] Among them, 1-door-type side frame I, 2-door-type side frame II, 3-hydraulic lifting cylinder I, 4-hydraulic lifting cylinder II, 5-connecting rod, 6-side support I, 7-side support II, 8-triangular support I, 9-steel strand I, 10-special lifting ear I, 101-hanging ear steel plate I, 102-hanging ear steel plate II, 103-circular flange reinforcement plate I, 104-circular flange reinforcement plate II, 105-hanging ear shaft sleeve, 106-T-shaped connecting plate, 107-reinforcement rib plate, 108-through hole, 11-lifting anchor I, 12-stop block, 13-turning stand, 131-square frame structure, 132-stand shaft sleeve. DETAILED DESCRIPTION

[0053] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0054] Example 1

[0055] A door-type frame device used for installation of large equipment, such as Figures 1 to 3 As shown, including Figure 7 The turning platform 13 shown, and two door-type side frames (door-type side frame I 1 and door-type side frame II 2) arranged oppositely and in parallel with each other;

[0056] Turning stand 13 as Figure 7 As shown, it includes a square frame structure 131 for clamping and fixing the large equipment to be installed, the square frame structure 131 matches the large equipment to be installed, and the two sides of the square frame structure 131 are provided with a stand shaft sleeve 132 matching the latch, and the two sides opposite to the flip stand 13 and the two door-type side frames (door-type side frame I 1, door-type side frame II 2) are fixed with special lifting ears I 10 and special lifting ears II, and the special lifting ears I 10 and special lifting ears II are fixedly connected with the flip stand 13 by latches;

[0057] The special lifting lug I 10 has the same structure as the special lifting lug II. Figures 4 and 5As shown, it includes a hanging ear steel plate I 101 and a hanging ear steel plate II 102 which are parallel to each other, and sleeve through holes matching each other are opened on the hanging ear steel plate I 101 and the hanging ear steel plate II 102. After the hanging ear shaft sleeve 105 passes through the sleeve through hole, it is welded and fixed to the hanging ear steel plate I 101 and the hanging ear steel plate II 102 respectively. Both ends of the hanging ear shaft sleeve 105 are provided with a circular flange reinforcement plate I 103 and a circular flange reinforcement plate II 104. The circular flange reinforcement plate I 103 and the hanging ear steel plate I 101 are parallel and tightly welded, and the circular flange reinforcement plate II 104 and the hanging ear steel plate II 102 are parallel and tightly welded. The hanging ear steel plate I 101 and the hanging ear steel plate II 102 are also welded and fixed by a T-shaped connecting plate 106, a through hole 108 for the steel strand to pass through is opened on the horizontal plate of the T-shaped connecting plate 106, and a plurality of reinforcing rib plates 107 are welded on the T-shaped connecting plate 106;

[0058] The connection between the cross beam and the two vertical bars in the door-type side frame is provided with a triangular support for strengthening the structure (such as Figure 3 As shown, a triangular support I8 for strengthening the structure is provided at the connection between the cross beam and the two vertical rods in the door-type side frame I. A hole is opened in the middle of the cross beam of the door-type side frame I1 and a hydraulic lifting cylinder I3 is installed at the hole. A hole is opened in the middle of the cross beam of the door-type side frame II2 and a hydraulic lifting cylinder II4 is installed at the hole. The hydraulic lifting cylinder is connected to a special lifting lug through a steel strand (such as Figure 3 As shown, the hydraulic lifting cylinder 13 is connected to the special lifting lug 110 through the steel strand 19, and the connection node between the special lifting lug 1 and the steel strand 1 is as shown in FIG. Figure 6 As shown, the steel strand I9 passes through the through hole 108 of the horizontal plate and is fixed to the lifting anchor I11, and a plurality of stop blocks 12 for limiting the lifting anchor I11 are provided below the horizontal plate), the door-type side frame I1 and the door-type side frame II2 are fixedly connected by a connecting rod 5 located above the door-type side frame I1 and the door-type side frame II2, a side support I6 is provided between the door-type side frame I1 and the connecting rod 5, and a side support II7 is provided between the door-type side frame II2 and the connecting rod 5;

[0059] The door-type frame device also includes a traveling device and a central control unit for driving the movement of the door-type frame device. The door-type side frame I1 and the door-type side frame II2 are respectively arranged on two tracks parallel to each other and spaced apart. The traveling device includes two sets of hydraulic push cylinders, and the two sets of hydraulic push cylinders correspond to the door-type side frame I1 and the door-type side frame II2 respectively. The two sets of hydraulic push cylinders synchronously drive the door-type side frame I1 and the door-type side frame II2 to slide along the tracks. The central control unit is connected to the control components of the hydraulic lifting cylinder and the control components of the hydraulic push cylinder.

[0060] The above-mentioned door-type frame device for large equipment installation has been used in the Henan Steel Zhoukou wide and thick plate project. Specifically, the vertical rod length of the door-type side frame is L=6000mm, width B=850mm, and steel plate thickness T=25mm; the crossbeam length is L=7000mm, height H1=1000mm, upper wing plate width B1=1200mm, lower wing plate width B2=800mm, and plate thickness T=25mm; the connecting rod is L=9000mm, height H=750mm, upper and lower wing plate width B=650mm, and plate thickness T=25mm; the inclined support adopts a steel pipe with a diameter of ø219*10mm and a length of L=7500mm; the door-type side frame is fixed by high-strength bolts with specifications of M30*65, M30*75, and strength grade 10.9;

[0061] The inner diameter of the lifting lug shaft sleeve in the special lifting lug is ø251mm, the outer diameter is ø400mm, and the length is L=670mm; the steel plate of the hanging lug is round at one end and flat at the other end, with a length of L=1470mm and a thickness of T=50mm; the inner diameter of the round flange reinforcement plate is ø401mm, the outer diameter is ø650mm, and the thickness is T=30mm; the reinforcement rib plate is L=300mm long and T=30mm thick;

[0062] The hydraulic lifting cylinder is 350t class and the hydraulic pushing cylinder is 100t class.

[0063] The application method of the above-mentioned door-type frame device for installing large equipment comprises the following steps:

[0064] (1) Install the door frame device;

[0065] Specifically, assemble the two door-type side frames with vertical bars and horizontal beams on the ground, then lift the two door-type side frames with the crane in the workshop and place them vertically on the sliding track, fix the single door-type side frame with temporary support to keep it in a vertical state, then lift the connecting rod used to connect the two door-type side frames horizontally to the connecting position of the two door-type side frames with the crane, and connect and fix them with M30*65 high-strength bolts. During the process of tightening the bolts, it is necessary to continuously observe the verticality values ​​of the vertical bars on both sides of the door-type frame through instruments to ensure that the verticality deviation does not exceed 3mm / H, then connect the two oblique supports between the vertical bars and the connecting bars of the door-type side frames respectively, and finally install the two hydraulic lifting cylinders in the middle of the horizontal beams on both sides of the door-type side frames and fix them;

[0066] Install the lifting anchor on the special lifting lug, which is specifically fixed by the stop block. Lift the two special lifting lugs to the two sides of the turning platform by the crane, align them with the middle pins at both ends of the turning platform, and then use the manual hoist to pull the special lifting lug into the pin of the turning platform, and fix it with the steel strand through the lifting anchor on the special lifting lug, and the other end of the steel strand is connected to the lifting hydraulic cylinder on the crossbeam of the portal frame;

[0067] (2) Fix the flip table in the middle of the large equipment to be installed to ensure that the large equipment to be installed can remain horizontal and stable when the flip table is lifted. Fix the flip table to the special lifting lugs through latches. Install a supporting steel stool between the flip table and the top of the large equipment to be installed to ensure that there is no looseness between the top of the equipment and the flip table.

[0068] The tilting platform is composed of two U-shaped box beam structures on the left and right sides assembled by high-strength bolts (as shown in the figure Figure 7 As shown in the figure), first slowly insert and fit the two U-shaped beam structures from both sides of the rolling mill equipment, then insert the positioning pins, and then tighten them with M30*75 high-strength bolts, so that the turning platform can tightly clamp the large equipment to be installed;

[0069] (3) The central control unit controls the hydraulic lifting cylinders to synchronously lift both sides of the flip platform so that the large equipment to be installed is out of contact with the installation surface. Specifically, the height is raised by 300 mm, and the lifting speed is controlled at 120 mm / min.

[0070] (4) The central control unit controls the hydraulic push cylinder to synchronously drive the two door-type side frames to slide along the track to the position where the equipment is to be installed. Specifically, the travel speed is controlled at 250 mm / min;

[0071] (5) Use the lifting equipment (crane) to lift the bottom end of the large equipment to be installed and slowly lower it. The large equipment to be installed will slowly rotate with the pin as the rotation center. At the same time, the central control unit controls the hydraulic lifting cylinder to synchronously lift both sides of the flip platform. The lifting equipment and the hydraulic lifting cylinder work together until the large equipment to be installed is in a vertical state, and ensure that the large equipment to be installed is directly above the equipment to be installed;

[0072] (6) The central control unit controls the hydraulic lifting cylinder to synchronously descend the flip platform until the large equipment to be installed falls on the equipment base plate, checks the size to see if it meets the requirements, and then uses bolts to fix the large equipment to be installed to the equipment base plate.

[0073] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0074] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A door-type frame device for installation of large equipment, characterized in that: It includes a turning platform and two door-type side frames arranged oppositely and in parallel; The flip stand is used to clamp and fix the large equipment to be installed. The flip stand is fixed with special lifting ears on the two sides opposite to the two door-shaped side frames, and the special lifting ears are fixedly connected to the flip stand by a latch; The two door-type side frames are fixedly connected by a connecting rod located above the two door-type side frames; Hydraulic lifting cylinders are installed on the cross beams of the two door-type side frames, and the hydraulic lifting cylinders are connected to special lifting ears through steel strands.

2. A door-type frame device for large equipment installation according to claim 1, characterized in that: A triangular support for strengthening the structure is provided at the connection between the cross beam and the two vertical bars in the door-shaped side frame; A side support is provided between the door-shaped side frame and the connecting rod.

3. A door-type frame device for installation of large equipment according to claim 1, characterized in that: A hole is opened in the middle of the crossbeam of the door-shaped side frame, and a hydraulic lifting cylinder is installed at the hole.

4. A door-type frame device for large equipment installation according to claim 1, characterized in that: Also includes a walking device for driving the door-type frame device to move; The two door-type side frames are arranged on two tracks which are parallel to each other and arranged at intervals. The walking device includes two sets of hydraulic push cylinders which correspond to the two door-type side frames respectively. The two sets of hydraulic push cylinders synchronously drive the two door-type side frames to slide along the tracks.

5. A door-type frame device for installation of large equipment according to claim 4, characterized in that: It also includes a central control unit; The central control unit is connected with the control components of the hydraulic lifting cylinder and the hydraulic pushing cylinder.

6. A door-type frame device for large equipment installation according to claim 1, characterized in that: The special lifting lug comprises two mutually parallel lifting lug steel plates; The two hanging ear steel plates are provided with sleeve through holes matching each other, the hanging ear shaft sleeve is respectively welded and fixed to the two hanging ear steel plates after passing through the sleeve through holes, both ends of the hanging ear shaft sleeve are provided with round flange reinforcement plates, the round flange reinforcement plates are parallel to the hanging ear steel plates and welded closely, the two hanging ear steel plates are also welded and fixed by a T-shaped connecting plate, the horizontal plate of the T-shaped connecting plate is provided with a through hole for the steel strand to pass through, and a plurality of reinforcing rib plates are welded on the T-shaped connecting plate; The steel strands are fixed to the lifting anchors after passing through the through holes of the horizontal plate, and a plurality of stop blocks for limiting the lifting anchors are arranged below the horizontal plate.

7. A door-type frame device for large equipment installation according to claim 6, characterized in that: The turning platform comprises a square frame structure, and the square frame structure matches the large equipment to be installed; Both sides of the square frame structure are provided with stand shaft sleeves matching with the latch pins.

8. The application method of the door-type frame device for large equipment installation according to any one of claims 1 to 7, characterized in that: The following steps are involved: (1) Install the door frame device; (2) Fix the flip platform in the middle of the large equipment to be installed to ensure that the large equipment to be installed can remain horizontal and stable when the flip platform is lifted, and fix the flip platform to the special lifting lugs with pins; (3) The central control unit controls the hydraulic lifting cylinders to synchronously lift both sides of the flip platform so that the large equipment to be installed is out of contact with the installation surface; (4) The central control unit controls the hydraulic push cylinder to synchronously drive the two door-type side frames to slide along the track to the position where the equipment is to be installed; (5) Use the lifting equipment to lift the bottom end of the large equipment to be installed and slowly lower the bottom end of the large equipment to be installed. The large equipment to be installed will slowly rotate with the pin as the rotation center. At the same time, the central control unit controls the hydraulic lifting cylinder to synchronously lift both sides of the flip platform. The lifting equipment and the hydraulic lifting cylinder work together until the large equipment to be installed is in a vertical state, and ensure that the large equipment to be installed is directly above the equipment to be installed; (6) The central control unit controls the hydraulic lifting cylinder to synchronously descend the flip platform until the large equipment to be installed falls on the equipment bottom plate, and the large equipment to be installed is fixed to the equipment bottom plate with bolts.

9. The application method according to claim 8, characterized in that: After the large equipment to be installed falls on the equipment base plate, check that the size meets the requirements and then fix the large equipment to be installed; The lifting equipment is a crane.

10. The application method according to claim 8, characterized in that: A supporting steel stool is installed between the turning platform and the top of the large equipment to be installed.

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