Hoisting blind flange for hoisting equipment

By designing a lifting blind flange for lifting equipment, the problem of small equipment lacking lifting lugs during sectional lifting is solved, and a safe and efficient lifting process is achieved, reducing equipment damage and construction costs.

CN222684021UActive Publication Date: 2025-03-28SINOCHEM HUAYI ENGINEERING TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421525777.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-29
Publication Date
2025-03-28
Estimated Expiration
2034-06-29

AI Technical Summary

Technical Problem

When lifting equipment in segments, small equipment lacks designed lifting lugs, which usually requires a suspender locking flange for lifting, which can easily cause equipment damage.

Method used

A lifting blind flange for lifting equipment is designed, including blind flange, hanging lugs and connecting parts. By setting mounting holes and connecting parts on the blind flange and flange, the connection between the flange and the blind flange is realized, so as to facilitate lifting.

Benefits of technology

Through this technical solution, the equipment damage during lifting is reduced, the lifting efficiency and stability are improved, and the construction cost is reduced.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222684021U_ABST
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Abstract

The utility model relates to the technical field of hoisting auxiliary devices, and provides a hoisting blind flange for hoisting equipment, the hoisting blind flange comprises a blind flange, a lifting lug and a connecting piece, the lifting lug is welded to one side of the blind flange; a plurality of first mounting holes are formed in the blind flange, and all the first mounting holes are formed around the axis of the blind flange at intervals; the small equipment is provided with a flange which is provided with a plurality of second mounting holes; when the flange is connected with the blind flange, the first mounting hole and the second mounting hole are arranged oppositely, and the connecting piece is arranged in the first mounting hole and the second mounting hole in a penetrating mode. According to the hoisting blind flange for the hoisting equipment, the situation that the equipment is damaged during hoisting is reduced.
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Description

Technical Field

[0001] The present application relates to the technical field of lifting auxiliary devices, and in particular to a lifting blind flange for lifting equipment. Background Art

[0002] As the equipment in a chemical plant is used for a longer time, the probability of problems will increase. When equipment fails, it needs to be repaired. Replacing a new equipment requires a lot of time and cost, so in many cases, the equipment will be disassembled for repair.

[0003] There are lifting lugs available for hoisting the equipment as a whole, but when hoisting the equipment in sections, some small equipment may not be designed with related lifting lugs; therefore, the usual method is to use a sling to lock the flange of the small equipment for hoisting, such as ERP equipment, and this hoisting method will cause damage to the equipment. Utility Model Content

[0004] In order to reduce damage to equipment during hoisting, the present application provides a hoisting blind flange for hoisting equipment.

[0005] The present application provides a lifting blind flange for lifting equipment using the following technical solution:

[0006] A lifting blind flange for lifting equipment, comprising a blind flange, a lifting ear and a connecting piece, wherein the lifting ear is welded to one side of the blind flange; the blind flange is provided with a plurality of first mounting holes, and all the first mounting holes are arranged at intervals around the axis of the blind flange; the small equipment has a flange, and the flange has a plurality of second mounting holes; when the flange is connected to the blind flange, the first mounting hole and the second mounting hole are arranged opposite to each other, and the connecting piece is passed through the first mounting hole and the second mounting hole.

[0007] By adopting the above technical solution, when hoisting small equipment, the blind flange and the flange are first abutted so that the first mounting hole and the second mounting hole are arranged opposite each other, and then the connecting piece is inserted into the first mounting hole and the second mounting hole, so as to complete the connection between the flange and the blind flange; at this time, the staff connects the lifting strap of the lifting equipment with the lifting ear, thereby facilitating the hoisting of the small equipment and reducing the possibility that the lifting strap of the equipment directly locks the flange of the small equipment for hoisting, thereby reducing the damage to the equipment during hoisting.

[0008] Optionally, the connecting member includes a bolt and a nut, the bolt is inserted into the first mounting hole and the second mounting hole, and the nut is used to cooperate with the bolt.

[0009] By adopting the above technical solution, the bolts are inserted into the first mounting hole and the second mounting hole, and the nuts are matched with the bolts, so that the flange and the blind flange can be clamped between the bolt head and the nut, that is, the connection between the flange and the blind flange is completed, so that the staff can connect the lifting strap of the lifting equipment to the lifting ear of the blind flange.

[0010] Optionally, the connecting member includes a connecting rod, a clamping portion and a fixing ring, the clamping portion is arranged at one end of the connecting rod; a fixing groove is opened on the side wall of the connecting rod, and a fixing block is movably installed in the fixing groove. When the connecting ring is passed through the first mounting hole and the second mounting hole, and the flange and the blind flange are clamped between the clamping portion and the fixing ring, the fixing block is used to abut against the side of the fixing ring away from the clamping portion.

[0011] By adopting the above technical solution, the connecting rod is passed through the first mounting hole and the second mounting hole, and one side of the abutting portion is abutted against the flange, and then the fixing ring is sleeved on the connecting rod, so that one side of the fixing ring is abutted against the blind flange; and the fixing block is moved in the fixing groove so that it abuts against the fixing ring, thereby reducing the movement of the fixing ring groove away from one side of the blind flange, that is, the clamping of the flange and the blind flange by the abutting portion and the fixing ring is completed.

[0012] Moreover, this installation method can improve the connection efficiency between the flange and the blind flange, and reduce the need for multiple rotations to allow the connecting piece to fix the flange and the blind flange.

[0013] Optionally, a first spring is provided between the fixing block and the inner wall of the fixing groove, and the elastic force of the first spring is used to drive the fixing block to move toward a side away from the fixing groove.

[0014] By adopting the above-mentioned technical solution and setting the first spring, the fixed block can be kept in contact with one side of the fixed ring under normal conditions, thereby reducing the situation where the connecting rod is separated from the first mounting hole and the second mounting hole during the lifting process, and increasing the stability of the lifting equipment in lifting small equipment.

[0015] Optionally, a guide surface for guiding the fixing block into the fixing groove is provided on a side of the fixing block away from the abutting portion.

[0016] By adopting the above-mentioned technical solution and setting a guide surface, when the connecting rod is passed through the first mounting hole and the second mounting hole and the fixing ring is sleeved on the connecting rod, the fixing block enters the fixing groove under the guidance of the guide surface, thereby improving the stability of the connecting piece mounting flange and the blind flange.

[0017] Optionally, the clamping part includes a positioning plate, a clamping ring and a second spring, and the positioning plate is fixed to one end of the connecting rod; the second spring and the clamping ring are both sleeved on the outer wall of the connecting rod, and the two ends of the second spring are respectively connected to the clamping ring and the positioning plate, and the second spring remains in a compressed state.

[0018] By adopting the above-mentioned technical solution, the elastic force of the second spring can drive the clamping ring to move toward the side away from the positioning plate, so that the clamping ring and the fixing ring can be clamped between the flange and the blind flange, further improving the stability between the flange and the blind flange, and reducing the stability of the lifting equipment lifting small equipment.

[0019] Optionally, all the first mounting holes together form a mounting portion, and the mounting portions are provided in multiple groups, and all the mounting portions are spaced apart along the axis of the blind flange.

[0020] By adopting the above technical solution and providing multiple groups of mounting parts, the blind flange can be matched with flanges of different sizes of small equipment, thereby improving the practicality of the blind flange.

[0021] Optionally, the blind flange is provided with a rubber gasket, and the rubber gasket is used to abut against the flange surface.

[0022] By adopting the above technical solution and arranging a rubber pad, the flange and the blind flange can be separated to protect the flange surface of small equipment.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting a blind flange and a lifting lug on the blind flange, the flange and the blind flange are connected using a connector; the staff connects the lifting strap of the lifting equipment to the lifting lug, thereby facilitating the lifting of small equipment and reducing the possibility that the lifting strap of the equipment directly locks the flange of the small equipment during lifting, thereby reducing the damage to the equipment during lifting;

[0025] 2. By setting a second spring, a positioning plate and a clamping ring, the elastic force of the second spring can drive the clamping ring to move toward the side away from the positioning plate, so that the clamping ring and the fixing ring can be clamped between the flange and the blind flange, further improving the stability between the flange and the blind flange, and reducing the stability of the lifting equipment hoisting small equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of Example 1;

[0027] Figure 2 is a partial cross-sectional view of Example 1;

[0028] Figure 3 is a partial cross-sectional view of Example 2;

[0029] Figure 4 yes Figure 3 A local enlarged view of point A;

[0030] Figure 5 This is a partial cross-sectional view of Example 3.

[0031] Explanation of the accompanying drawings: 1. blind flange; 11. first mounting hole; 12. rubber gasket; 13. mounting portion; 2. lifting ear; 3. connecting piece; 31. bolt; 32. nut; 33. connecting rod; 331. fixing groove; 34. tightening portion; 341. positioning plate; 342. tightening ring; 343. second spring; 35. fixing ring; 36. fixing block; 37. first spring; 38. guide surface; 4. flange; 41. second mounting hole. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] Embodiment 1:

[0034] The embodiment of the present application discloses a lifting blind flange 1 for lifting equipment.

[0035] Reference Figure 1 A lifting blind flange 1 for lifting equipment comprises a blind flange 1, a lifting lug 2 and a connecting piece 3. The blind flange 1 and the lifting lug 2 are both supported by a 20 mm thick carbon steel plate. Two groups of lifting lugs 2 are provided. The two groups of lifting lugs 2 are welded to the blind flange 1 and are located on opposite sides of the axis of the blind flange 1.

[0036] Reference Figure 2 The blind flange 1 is provided with a plurality of first mounting holes 11, and all the first mounting holes 11 are arranged at intervals around the axis of the blind flange 1; the small device has a flange 4, and the flange 4 has a plurality of second mounting holes 41, and all the second mounting holes 41 are arranged at intervals around the axis of the flange 4. When the flange 4 is connected to the blind flange 1, the connecting member 3 is penetrated through the first mounting holes 11 and the second mounting holes 41.

[0037] A rubber gasket 12 is provided on the side of the blind flange 1 away from the lifting ear 2. The rubber gasket 12 is annular in shape and is adhered to one side of the blind flange 1. During the connection between the blind flange 1 and the flange 4, the rubber gasket 12 separates the flange 4 from the blind flange 1 and covers the surface of the flange 4, thereby protecting the flange 4 of the small equipment.

[0038] In this embodiment, the connecting member 3 includes a bolt 31 and a nut 32. The bolt 31 is sequentially inserted into the first mounting hole 11 and the second mounting hole 41, and the nut 32 is matched with the end of the bolt 31, so that the flange 4 and the blind flange 1 can be clamped between the head of the bolt 31 and the nut 32, that is, the connection between the flange 4 and the blind flange 1 is completed; the bolt 31 and the nut 32 have a simple structure and a low price, so that the staff can assemble them and reduce the construction cost.

[0039] The implementation principle of Example 1 of the present application is:

[0040] When hoisting small equipment, firstly, the blind flange 1 and the flange 4 are abutted so that the first mounting hole 11 and the second mounting hole 41 are arranged opposite to each other, so that the bolt 31 and the nut 32 can cooperate to complete the connection between the flange 4 and the blind flange 1; at this time, the staff connects the lifting strap of the lifting equipment with the lifting ear 2, thereby facilitating the hoisting of the small equipment and reducing the possibility that the lifting strap of the equipment directly locks the flange 4 of the small equipment for hoisting, thereby reducing the damage to the equipment during hoisting.

[0041] Moreover, the flange 4 and the lifting lug 2 can be made from local steel plates used in construction, and can be processed and manufactured according to existing equipment; so that the staff can manufacture according to the flange 4 of small equipment, thereby improving convenience.

[0042] Embodiment 2:

[0043] The embodiment of the present application discloses a lifting blind flange 1 for lifting equipment.

[0044] Reference Figure 3 , the difference between the embodiment 2 of the present application and the embodiment 1 is that the connecting member 3 includes a connecting rod 33, a fastening portion 34 and a fixing ring 35, the fastening portion 34 includes a positioning plate 341, a fastening ring 342 and a second spring 343, the positioning plate 341 is fixed to one end of the connecting rod 33, the second spring 343 and the fastening ring 342 are sequentially sleeved on the outer wall of the connecting rod 33, and the two ends of the second spring 343 are respectively fixed to the positioning plate 341 and the fastening ring 342. The elastic force of the second spring 343 drives the fastening ring 342 to move toward the side away from the positioning plate 341.

[0045] Reference Figure 4 The connecting rod 33 has two opposite side walls formed with fixing grooves 331, in which fixing blocks 36 are movably installed; a guide surface 38 is provided on the side of the fixing block 36 away from the tightening ring 342, and the distance between the guide surface 38 and the positioning plate 341 increases step by step from the side of the fixing block 36 away from the fixing groove 331 to the side close to the fixing groove 331, and the guide surface 38 is used to guide the fixing block 36 into the fixing groove 331.

[0046] A first spring 37 is disposed between the fixing block 36 and the inner wall of the fixing groove 331 . The elastic force of the first spring 37 drives the fixing block 36 to move toward a side away from the fixing groove 331 .

[0047] The implementation principle of Example 2 of the present application is:

[0048] When connecting the flange 4 to the blind flange 1, firstly, the connecting rod 33 is passed through the first mounting hole 11 and the second mounting hole 41. At this time, the guide surface 38 of the fixing block 36 abuts against the inner walls of the first mounting hole 11 and the second mounting hole 41 to guide the fixing block 36 into the fixing groove 331; so that the fixing groove 331 passes through the first mounting hole 11 and the second mounting hole 41 smoothly and the clamping ring 342 abuts against one side of the blind flange 1;

[0049] Then, the fixing ring 35 is sleeved on the connecting ring, and after the fixing ring 35 passes through the fixing groove 331, the fixing block 36 protrudes out of the fixing groove 331 again under the elastic force of the first spring 37; so that one side of the fixing ring 35 abuts against the fixing block 36, and the flange 4 and the blind flange 1 can be clamped between the fixing ring 35 and the clamping ring 342; that is, the installation of the flange 4 and the blind flange 1 is completed. And this installation method can improve the connection efficiency of the flange 4 and the blind flange 1, and reduce the need for multiple rotations to fix the flange 4 and the blind flange 1 with the connecting member 3.

[0050] Embodiment 3:

[0051] The embodiment of the present application discloses a lifting blind flange 1 for lifting equipment.

[0052] Reference Figure 5 The difference between the embodiment 3 of the present application and the embodiment 1 is that: all the first mounting holes 11 form a mounting portion 13 together, and the mounting portions 13 are provided in multiple groups, and all the mounting portions 13 are arranged at intervals along the radial direction of the flange 4. By providing multiple groups of mounting portions 13, the blind flange 1 can be matched with flanges 4 of different sizes of small equipment, thereby improving the practicality of the blind flange 1.

[0053] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lifting blind flange for lifting equipment, characterized in that: The device comprises a blind flange (1), a lifting lug (2) and a connecting piece (3), wherein the lifting lug (2) is welded to one side of the blind flange (1); the blind flange (1) is provided with a plurality of first mounting holes (11), and all the first mounting holes (11) are arranged at intervals around the axis of the blind flange (1); the small device comprises a flange (4), and the flange (4) comprises a plurality of second mounting holes (41); when the flange (4) is connected to the blind flange (1), the first mounting holes (11) and the second mounting holes (41) are arranged opposite to each other, and the connecting piece (3) is passed through the first mounting holes (11) and the second mounting holes (41).

2. A lifting blind flange for lifting equipment according to claim 1, characterized in that: The connecting member (3) comprises a bolt (31) and a nut (32); the bolt (31) is inserted through the first mounting hole (11) and the second mounting hole (41); and the nut (32) is used to cooperate with the bolt (31).

3. A lifting blind flange for lifting equipment according to claim 1, characterized in that: The connecting member (3) comprises a connecting rod (33), a pressing portion (34) and a fixing ring (35), wherein the pressing portion (34) is arranged at one end of the connecting rod (33); a fixing groove (331) is provided on a side wall of the connecting rod (33), and a fixing block (36) is movably installed in the fixing groove (331); when the connecting rod (33) is inserted into the first mounting hole (11) and the second mounting hole (41), and the flange (4) and the blind flange (1) are clamped between the pressing portion (34) and the fixing ring (35), the fixing block (36) is used to abut against a side of the fixing ring (35) away from the pressing portion (34).

4. A lifting blind flange for lifting equipment according to claim 3, characterized in that: A first spring (37) is provided between the fixing block (36) and the inner wall of the fixing groove (331), and the elastic force of the first spring (37) is used to drive the fixing block (36) to move towards a side away from the fixing groove (331).

5. A lifting blind flange for lifting equipment according to claim 4, characterized in that: A guide surface (38) for guiding the fixing block (36) to enter the fixing groove (331) is provided on one side of the fixing block (36) away from the abutting portion (34).

6. A lifting blind flange for lifting equipment according to claim 3, characterized in that: The abutting portion (34) comprises a positioning plate (341), a abutting ring (342) and a second spring (343); the positioning plate (341) is fixed to one end of the connecting rod (33); the second spring (343) and the abutting ring (342) are both sleeved on the outer wall of the connecting rod (33), and the two ends of the second spring (343) are respectively connected to the abutting ring (342) and the positioning plate (341); the second spring (343) is kept in a compressed state.

7. The hoisting blind flange for hoisting equipment according to claim 1, characterized in that: All the first mounting holes (11) together form a mounting portion (13), and a plurality of groups of the mounting portions (13) are provided, and all the mounting portions (13) are arranged at intervals along the axis of the blind flange (1).

8. The hoisting blind flange for hoisting equipment according to claim 1, characterized in that: The blind flange (1) is provided with a rubber gasket (12), and the rubber gasket (12) is used to abut against the surface of the flange (4).