Connecting lug plate assembling bracket for derrick section of petroleum drilling machine

Abstract

The utility model discloses a petroleum drilling machine derrick section connecting lug plate assembling bracket which comprises a rectangular frame body defined by four sides of section steel, lifting points are arranged on the two sides of the frame body in the length direction respectively, and each lifting point comprises a section steel short section extending out of the outer side of the frame body and a lifting point limiting stop rod penetrating through the upper side and the lower side of the section steel short section. Limiting baffles of H-shaped structures are connected to the inner sides of the two ends of the frame body in the length direction in an embedded mode, and a single-double lug plate assembly is supported between the limiting baffles at the two ends in the longitudinal direction. The outer side of the short-edge profile steel of the frame body is further connected with a horizontal adjusting limiting device in a welded mode. Due to the arrangement of the single-double lug plate angle adjustment limiting device and the height adjustment supporting device, the angle of the single-double lug plate can be accurately adjusted before assembly, positioning and self-locking are achieved through the limiting baffle after the size is adjusted in place, accuracy adjustment is flexible and reliable, and the instability risk is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling mechanical equipment, in particular to a mounting bracket for connecting ear plates of a derrick section of an oil drilling rig. Background Technique

[0002] The derrick of a drilling rig is an important part of the oil drilling rig. Its main function is to place and suspend the traveling system, lifting rings, elevators, etc., and bear the loads generated during tripping, casing running and other operations. It is a metal truss structure with a certain height and space. Therefore, the derrick must have sufficient bearing capacity and overall stability. The derrick body is generally composed of five or six derrick monomers. The derrick monomer is a frame structure with a rectangular cross-section, open at the front, and the four corners are the main derrick legs that mainly play a role in connection and load bearing. Adjacent derrick monomers are connected by single and double ear plate groups welded on the derrick legs and pin shafts. The derrick legs are generally made of welded I-beams or H-beams. Since the end face of the derrick leg is the bearing surface, after the pin shaft is installed, it is necessary to ensure that the end faces between the derrick monomers are in close contact. Generally, the drawing requires that the contact area should be greater than 80%, the gap of the non-contact part should not be greater than 0.5 mm, and the drawing requires that the linear deviation of the derrick leg within the full length dimension should not be greater than ±10 mm. That is, the key to ensuring that the end faces of each derrick section are aligned and closely fitted is to determine the size of the hole diameter of the ear plate group and the diameter of the mating pin shaft and the relative position of the connecting ear plate group. It is required that the assembly of the section connecting ear plate group should ensure both the concentricity of the relevant double ear plates and an appropriate eccentricity of the holes of the double and single ear plates. Therefore, the relative position dimensions between holes and between holes and the connecting end face are extremely demanding when assembling the connecting ear plates of each derrick monomer section. In addition, considering the inevitable thermal deformation after welding and assembly, subtle welding deformation is likely to cause quality defects such as difficulty in inserting pins through each derrick section and non-compliance of the contact surface requirements. Under drilling conditions, it may cause a decrease in the bearing capacity and stability of the derrick.

[0003] To ensure that the end faces of each section of the derrick can fit closely, it is also necessary to ensure the concentricity of the double-ear plates, and at the same time ensure that the holes of the single and double-ear plates have an appropriate amount of eccentricity. In addition, the thermal deformation after welding during assembly needs to be considered. Therefore, determining the relative position of the single and double-ear plate groups is the key to the manufacturing process. When assembling the connecting ear plates of each single derrick section, the dimensional requirements for the relative positions of holes to holes and holes to the connecting end faces are extremely high. The connecting ear plate groups of the single derrick connecting section are designed at two positions, above and below, at the end of the welded I-beam of the main leg of the derrick. The upper group of connecting ear plate groups can be adjusted in terms of position, angle, etc. through conventional hoisting to complete the assembly. When assembling the lower group of connecting ear plate groups, since the single derrick sheet is in a suspended state, it needs to be lifted to the assembly position. Because there is no dedicated lifting point designed in the drawing, there is a risk of instability during hoisting, and it is impossible to efficiently and accurately achieve fine adjustment of the height, angle (position), etc. of the single and double-ear plate groups during assembly. It is difficult to ensure the drawing dimensions during the assembly process. Therefore, the present utility model proposes a universal assembly bracket for connecting ear plates of a petroleum drilling rig derrick section, which is applicable to the assembly operation of the connecting ear plate groups during the installation of any single K-type derrick sheet, and preferably solves this problem. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide an assembly bracket for connecting ear plates of a petroleum drilling rig derrick section, which can accurately lift the connecting ear plate group to the assembly position, and is provided with an overall height adjustment rod and an ear plate angle adjustment limit baffle to complete the positioning, and can efficiently complete the assembly operation under the condition of no hoisting, effectively improving the production efficiency, and at the same time reducing the safety risk during the operation process, so as to solve the problems proposed in the background technology.

[0005] To achieve the above purpose, the present utility model provides the following technical solution: An assembly bracket for connecting ear plates of a petroleum drilling rig derrick section, comprising a rectangular frame body surrounded by steel profiles on four sides. On both sides of the frame body along the length direction, lifting points are respectively provided. The lifting points include a short steel profile extending from the outside of the frame body and a lifting point limit rod penetrating through the upper and lower sides of the short steel profile; on the inner sides of both ends of the frame body along the length direction, H-shaped limit baffles are respectively embedded and connected, and a single and double-ear plate assembly is longitudinally lifted between the limit baffles at both ends; a horizontal adjustment limit device is also welded and connected to the outer side of the short-side steel profile of the frame body. The horizontal adjustment limit device includes a locking nut welded to the outside of the frame body, and an adjustment bolt is threadedly connected to the locking nut.

[0006] Preferably, the single and double-ear plate assembly includes double-ear plates arranged on both sides and a single-ear plate in the middle of the double-ear plates on both sides. The double-ear plates and the single-ear plate are connected by a positioning pin.

[0007] Preferably, the frame body includes four square steel pipes welded end to end in sequence.

[0008] The working process of the present utility model is as follows:

[0009] In the present utility model, hoisting points are arranged in the middle or at the four corners on the upper surface of the frame body. When hoisting, either steel wire ropes or slings can be selected. A limit stop rod is arranged at the end of the hoisting point to prevent the steel wire rope or sling from slipping out during hoisting.

[0010] The height adjustment support device is realized by a combination of bolts and nuts. Openings are made on the lower surface of the square tube of the frame body, and nuts are welded outside the openings. The height can be adjusted by long bolts. The horizontal adjustment device is also realized by a combination of bolts and nuts. Openings are made on the outer side of the square tube of the frame body, and nuts are welded outside the openings. One end of the long bolt is welded to the limit baffle as a whole, and the horizontal advancement and retreat can be adjusted by the long bolt. When in use, first place the single and double ear plate combination pin through on the bracket. After adjusting the angle of the single and double ear plate combination to the requirements of the drawing by the horizontal adjustment device, position it with the limit baffle and lock the nut. In addition, when adjusting, pads can be used between the single and double ear plates to make the gap between the single and double ear plates uniform. Then place the whole bracket under the end of each section connection of the derrick. Lift the single and double ear plate combination to fit with the lower wing plate of the welded I-beam of the derrick main leg through the height adjustment support device. After observing that the joint surfaces are uniform everywhere, spot-weld the single and double ear plate combination firmly. That is, complete the assembly operation of a set of single and double ear plates. After removing the bracket, continue the above operation to complete the assembly of other single and double ear plates.

[0011] The beneficial effects of the present utility model are as follows:

[0012] (1) Due to the setting of the single and double ear plate angle adjustment limit device and the height adjustment support device in the present utility model, the precise adjustment of the angle of the single and double ear plates can be completed before assembly. After the dimension adjustment is in place, it is positioned and self-locked by the limit baffle. The precision adjustment is flexible and reliable, effectively avoiding the risk of instability.

[0013] (2) During the assembly of the present utility model, conventional hoisting does not need to be adopted. Place the bracket under the end of the derrick main leg. The single and double ear plate group can be lifted to the position of the drawing size through the bolt and nut combination of the bracket itself, quickly realizing the flexible adjustment of the height dimension, eliminating the safety risk of lifting during the operation process, and greatly improving the assembly operation efficiency.

[0014] (3) In the present utility model, the main frame structure adopts thick-walled square tubes, with high overall stiffness and stability, and the bracket is light in weight, and the operation flexibility is reliable. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the top view of the process of lifting the single and double ear plate assembly of the present utility model;

[0017] Figure 3 is the front view of the process of lifting the single and double ear plate assembly of the present utility model;

[0018] Figure 4It is a schematic diagram of the angle adjustment process of the single and double ear plate components of the present utility model;

[0019] In the figure: 1 - Frame main body; 2 - Height adjustment support device; 3 - Horizontal adjustment limit device; 4 - Limit baffle; 5 - Hoisting point; 6 - Hoisting point limit bar. Specific implementation mode

[0020] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] As Figures 1-4 shown, a fitting bracket for the connecting ear plates of a derrick section of an oil drilling rig includes a rectangular frame main body 1 composed of four square steel pipes welded end to end in sequence. On both sides of the frame main body 1 along the length direction, hoisting points 5 are respectively provided. The hoisting point 5 includes a steel section short joint extending from the outside of the frame main body 1 and a hoisting point limit bar 6 penetrating through the upper and lower sides of the steel section short joint; on the inner sides of both ends of the frame main body 1 along the length direction, limit baffles 4 with an H-shaped structure are respectively embedded. Between the limit baffles 4 at both ends, a single and double ear plate assembly is supported longitudinally. The single and double ear plate assembly includes double ear plates arranged on both sides and a single ear plate in the middle of the double ear plates on both sides. The double ear plates and the single ear plate are connected by a positioning pin; on the outer side of the short-side steel section of the frame main body 1, a horizontal adjustment limit device 3 is also welded. The horizontal adjustment limit device 3 includes a locking nut welded on the outer side of the frame main body 1, and an adjustment bolt is threadedly connected to the locking nut.

[0022] The working process of the present utility model is as follows:

[0023] Hoisting points 5 are arranged in the middle or at the four corners on the frame main body 1. When hoisting, either a steel wire rope or a sling can be selected. A limit bar 6 is arranged at the end of the hoisting point to prevent the steel wire rope or the sling from slipping out during hoisting. The height adjustment support device 2 is realized by a combination of bolts and nuts. Open holes are made on the lower side of the square pipe of the frame main body 1, and nuts are welded outside the holes. The height can be adjusted by long bolts. The horizontal adjustment device 3 is also realized by a combination of bolts and nuts. Open holes are made on the outer side of the square pipe of the frame main body 1, and nuts are welded outside the holes. One end of the long bolt is welded to the limit baffle 4 as a whole, and the horizontal advancement and retreat can be adjusted by the long bolt. When in use, first place the single and double ear plate combination with a pin on the bracket. After adjusting the angle of the single and double ear plate combination to the requirements of the drawing through the horizontal adjustment device 3, position it with the limit baffle 4 and lock the nut. Additionally, when adjusting, a spacer plate can be used between the single and double ear plates to make the gap between the single and double ear plates uniform. Then place the whole bracket under the end of each connection of the derrick section. Lift the single and double ear plate combination to fit the lower wing plate of the welded I-beam of the derrick main leg through the height adjustment support device 2. After observing that the joint surfaces are uniform everywhere, spot-weld the single and double ear plate combination firmly. That is, a set of single and double ear plate fitting operations are completed. After removing the bracket, continue the above operations to complete the fitting of single and double ear plates at other places.

[0024] The utility model patent is applicable to the assembly of connecting lugs for any front-opening K-type derrick sections. When assembling the derrick, due to the inconvenience of observation and the lack of reasonable lifting points during the combined assembly of single and double lugs at the bottom, it mainly solves the problems of assembly efficiency and accuracy. Through the application of this utility model patent, precise fine-tuning of the position, angle, etc. of single and double lugs can be achieved efficiently and accurately, which well guarantees the quality requirements of the assembly operation. And it does not use hoisting during use, reducing the safety risks during the operation process.

[0025] The above are only the preferred examples of the utility model. It should be noted that for those of ordinary skill in the art, under the technical inspiration provided by the utility model and as common general knowledge in the mechanical field, other equivalent variations and improvements can also be made, which should also be regarded as the protection scope of the utility model.

Claims

1. An ear plate assembly bracket for connecting sections of a petroleum drilling rig derrick, characterized in that: It includes a rectangular frame body (1) surrounded by profiled steel on four sides. On both sides of the frame body (1) along the length direction, there are respectively lifting points (5). The lifting points (5) include profiled steel short sections extending from the outside of the frame body (1) and lifting point limiting rods (6) penetrating through the upper and lower sides of the profiled steel short sections. On the inner sides of both ends of the frame body (1) along the length direction, there are respectively embedded and connected with limiting baffles (4) of H-shaped structures. Between the limiting baffles (4) at both ends, a single and double ear plate assembly is supported longitudinally. On the outer side of the short-side profiled steel of the frame body (1), there is also welded and connected a horizontal adjustment limiting device (3). The horizontal adjustment limiting device (3) includes a locking nut welded on the outer side of the frame body (1), and an adjustment bolt is threadedly connected to the locking nut.

2. The fitting bracket for the connecting ear plate of the derrick section of an oil drilling rig according to claim 1, wherein: The single and double ear plate assembly includes double ear plates arranged on both sides and a single ear plate in the middle of the double ear plates on both sides. The double ear plates and the single ear plate are connected by a positioning pin.

3. A fitting bracket for a connecting ear plate of a derrick section of an oil drilling rig according to claim 1 or 2, characterized in that: The frame body (1) includes four square steel pipes welded end to end in sequence.

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