Anti-sideslip structure of petroleum drilling derrick dismounting and lifting device

Abstract

The utility model discloses an anti-sideslip structure of a petroleum drilling derrick dismounting and lifting device, and belongs to the technical field of oil field drilling equipment. Comprising a rolling assembly arranged at the top of the derrick lifting device, the rolling assembly protrudes upwards out of the derrick lifting device, a bearing part is formed at the top of the derrick lifting device, and a concave limiting part is arranged around the middle of the rolling assembly. The rolling assembly is rotatably arranged on the upper side of the lifting device, in the process that the lifting device lifts the derrick, the derrick and the lifting device can move relatively, due to the rolling assembly, friction between the derrick and the lifting device can be avoided, damage to the derrick can be avoided, and the derrick lifting device can be used for lifting the derrick. And the rolling assembly is further provided with a limiting part for limiting the derrick, the limiting part can limit the derrick, the derrick is prevented from being separated from the rolling assembly in the lifting process, and the working stability is improved.

Description

Technical Field

[0001] An anti - side - slip structure for a disassembly, assembly and lifting device of an oil drilling derrick belongs to the technical field of oilfield drilling equipment. Background Technique

[0002] An oil derrick generally consists of multiple sections. The traditional assembly method is to transport it to the well site and use multiple cranes and forklifts to cooperate to assemble it from bottom to top. And after each section is assembled, workers need to tighten it. Due to the large height of the derrick, when the derrick is hoisted and assembled, the operation is very inconvenient, and due to the need for high - altitude operation, there are great safety hazards.

[0003] Chinese Utility Model Patent CN220317276U discloses a self - propelled oil drilling derrick lifting device and its control system, including: a chassis frame with traveling devices provided at its left and right ends; a lifting platform that can be lifted on the chassis frame through a traveling and lifting hydraulic cylinder; a base provided below the lifting platform and fixedly connected to the lifting platform through an outer cylinder; a cross beam that can be lifted on the lifting platform through a cross - beam lifting hydraulic cylinder, and an inner cylinder that is slidably sleeved with the outer cylinder is provided on the cross beam; a controller connected to the traveling device, the traveling and lifting hydraulic cylinder, and the cross - beam lifting hydraulic cylinder; the control system includes: a remote controller and a wireless control module.

[0004] The above - mentioned technical solution has the following technical problems in the use process: The derrick is horizontally assembled, and then one end is supported on the foundation and used as a rotating shaft, and the lifting device jacks up the derrick, thus erecting the derrick. Since the derrick makes a circular motion with the fulcrum as the axis, and during the process of lifting the derrick, the lifting device is fixed. Therefore, during the process of the lifting device pushing the derrick to be erected, relative movement will occur between the derrick and the lifting device, which leads to wear between the lifting device and the derrick, and it is easy to damage the derrick and the lifting device, reducing the service life of the lifting device. Utility Model Content

[0005] The technical problem to be solved by the present utility model is: Overcoming the deficiencies of the prior art, providing an anti - side - slip structure for a disassembly, assembly and lifting device of an oil drilling derrick that can avoid damage to the derrick or the lifting device caused by relative movement between the derrick and the lifting device.

[0006] The solution adopted by the present utility model to solve its technical problem is: An anti - side - slip structure for a disassembly, assembly and lifting device of an oil drilling derrick includes a rolling component arranged at the top of the derrick lifting device. The rolling component protrudes upward from the derrick lifting device and forms a supporting part at the top of the derrick lifting device. An inward - concave limiting part is arranged around the middle of the rolling component.

[0007] Preferably, the rolling component includes a carrying roller. Mounting parts with diameters smaller than that of the middle part are arranged at both ends of the carrying roller, and the mounting parts are rotatably connected to the derrick lifting device.

[0008] Preferably, an annular limiting platform is arranged on the outer wall of the carrying roller. Limiting platforms are arranged at both ends of the carrying roller, and a limiting part is formed between the two limiting platforms.

[0009] Preferably, both ends of the rolling component are rotatably mounted on the derrick lifting device through cylindrical roller bearings, and at least two needle bearings are arranged side by side at each end of the rolling component.

[0010] Preferably, it further includes a fixed beam. The fixed beam is fixedly mounted on the top of the derrick lifting device. The rolling component is arranged directly above the fixed beam and is rotatably mounted on the fixed beam.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] The rolling component of the present utility model is rotatably arranged on the upper side of the lifting device. During the process of the lifting device lifting the derrick, relative movement will occur between the derrick and the lifting device. Due to the existence of the rolling component, friction between the derrick and the lifting device can be avoided, which can not only prevent damage to the derrick but also prevent damage to the lifting device. The rolling component is also provided with a limiting part for limiting the derrick. The limiting part can limit the derrick and prevent the derrick from separating from the rolling component during the lifting process, improving the working stability. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a partial schematic diagram of the present utility model;

[0015] Figure 3 is a schematic diagram of the relative position between the oil drilling derrick disassembly and assembly lifting device and the derrick before lifting;

[0016] Figure 4 is Figure 3 a partial enlarged view of part A in

[0017] Figure 5 is a schematic diagram of the relative position between the oil drilling derrick disassembly and assembly lifting device and the derrick after lifting;

[0018] Figure 6 is Figure 5 a partial enlarged view of part B in

[0019] In the figure: 1, carrying roller; 11, rolling bearing; 2, bearing seat; 21, grease injection port; 3, fixed beam; 4, limiting platform. Specific embodiments

[0020] The following further describes the present utility model in conjunction with specific embodiments. However, those skilled in the art should understand that the detailed description given here in conjunction with the accompanying drawings is for better explanation. The structure of the present utility model necessarily extends beyond these limited embodiments, and for some equivalent replacement schemes or common means, no detailed description will be given herein, but they still fall within the protection scope of the present application.

[0021] Figures 1 - 6 This is the best embodiment of the present utility model. The following further describes the present utility model in conjunction with the attached Figures 1 - 6 drawings.

[0022] Referring to the attached Figures 1 - 2 drawings, an anti-skid structure of a lifting device for disassembling and assembling an oil drilling derrick includes a rolling component arranged at the top of the derrick lifting device. The rolling component protrudes upward from the derrick lifting device and forms a supporting part at the top of the derrick lifting device. An inwardly concave limiting part is arranged around the middle of the rolling component. The rolling component of the present utility model is rotatably arranged on the upper side of the lifting device. During the process of the lifting device lifting the derrick, relative movement will occur between the derrick and the lifting device. Due to the existence of the rolling component, friction between the derrick and the lifting device can be avoided, which can not only prevent damage to the derrick but also prevent damage to the lifting device. The rolling component is also provided with a limiting part for limiting the derrick, and the limiting part can limit the derrick to avoid the derrick separating from the rolling component during the lifting process, improving the working stability.

[0023] The rolling component includes a roller 1. Both ends of the roller 1 are provided with mounting parts with diameters smaller than the middle diameter, and the mounting parts are rotatably connected to the derrick lifting device. Both ends of the rolling component are rotatably installed on the derrick lifting device through needle bearings 11. At least two needle bearings 11 are arranged side by side on each mounting part. The needle bearings 11 are detachably connected to the lifting device through bearing seats 2. The needle bearings 11 bear radial loads and have a long service life.

[0024] An annular limiting platform 4 is arranged around the outer wall of the roller 1. Limiting platforms 4 are arranged at both ends of the roller 1, and a limiting part is formed between the two limiting platforms 4. When lifting the derrick, the derrick is located between the two limiting platforms 4, and the two limiting platforms 4 can limit the derrick.

[0025] The anti-skid structure of the lifting device for disassembling and assembling the oil drilling derrick further includes a fixed beam 3. The fixed beam 3 is fixedly installed at the top of the derrick lifting device. The rolling component is arranged directly above the fixed beam 3 and is rotatably installed on the fixed beam 3. Through the arrangement of the fixed beam 3, it is convenient to install the roller 1.

[0026] Furthermore, the fixed beam 3 is horizontally arranged, the idler 1 is arranged parallel to the fixed beam 3, the idler 1 is located directly above the fixed beam 3, and both bearing seats 2 at the two ends of the idler 1 are fixedly connected to the fixed beam 3. A grease injection port 21 is arranged above the bearing seat 2, and the grease injection port 21 is located between the two needle roller bearings 11 on the corresponding side, so that each needle roller bearing 11 can be lubricated simultaneously.

[0027] In this embodiment, the derrick lifting device can adopt a self-propelled oil drilling derrick lifting device and its control system device disclosed in the utility model CN 220317276 U, and its specific structure and working principle will not be elaborated here.

[0028] When lifting the derrick, refer to the attached Figures 4 - 6 , before lifting, the derrick is supported on the idler 10. At this time, the contact point between the derrick and the idler 10 is the support point a. During the lifting process, since the equipment is fixed during the lifting process, and the derrick will slowly rise with the end fulcrum as the axis. After being lifted to the specified position, the contact point between the idler 10 and the derrick is the support point b. The support point a is located on the side of the support point b closer to the derrick fulcrum, and there is a gap between the support point a and the support point b. That is, during the lifting process, relative movement will inevitably occur between the derrick and the lifting device.

[0029] Taking the example of lifting the derrick from a height of 3000 mm to 6800 mm, the distance between the support point a and the support point b before and after lifting is about 400 mm. That is, the relative displacement between the lifting device and the derrick is about 400 mm. By arranging the idler 1, abrasion between the lifting device and the derrick can be avoided.

[0030] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. An anti-skid structure for a disassembly and assembly lifting device of a petroleum drilling derrick, characterized in that: It includes a rolling assembly arranged on the top of the derrick lifting device, the rolling assembly protrudes upward from the derrick lifting device, and forms a supporting part on the top of the derrick lifting device, and an inwardly concave limiting part is arranged around the middle of the rolling assembly.

2. The anti-side slip structure of the oil drilling derrick disassembly and lifting device according to claim 1 is characterized by: The rolling assembly comprises a roller (1), both ends of the roller (1) are provided with mounting parts with a diameter smaller than the diameter of the middle part, and the mounting parts are rotatably connected to the derrick lifting device.

3. The anti-side slip structure of the oil drilling derrick disassembly and lifting device according to claim 2 is characterized by: An annular limiting platform (4) is arranged around the outer wall of the roller (1), and limiting platforms (4) are arranged at both ends of the roller (1), and a limiting portion is formed between the two limiting platforms (4).

4. The anti-side slip structure of the oil drilling derrick disassembly and lifting device according to claim 1 or 2, characterized in that: Both ends of the rolling assembly are rotatably mounted on the derrick lifting device via needle roller bearings (11), wherein at least two needle roller bearings (11) are arranged side by side at each end of the rolling assembly.

5. The anti-side slip structure of the oil drilling derrick disassembly and lifting device according to claim 1, characterized in that: It also includes a fixed beam (3), which is fixedly mounted on the top of the derrick lifting device, and a rolling assembly is arranged directly above the fixed beam (3), and the rolling assembly is rotatably mounted on the fixed beam (3).

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