Large-bearing stress structure frame

Abstract

A large-bearing stress structure frame is suitable for a 5000-meter desert vehicle-mounted petroleum drilling and workover rig and is characterized in that a spliced I-shaped steel frame beam structure is adopted, and a spliced I-shaped steel frame beam is provided with an upper wing plate and a lower wing plate with variable cross sections, an integral web plate and double web plates arranged at the positions where local stress is large; six sets of supporting legs are arranged on the front portion, the middle portion and the rear portion of the frame in total and comprise four sets of hydraulic supporting legs and two sets of mechanical supporting legs, and the six sets of supporting legs are used for transmitting loads to the ground nearby at the large stress position, reducing the internal stress of the frame and achieving supporting and bearing in the vehicle transportation and drilling operation process on the premise of light weight. The frame mainly comprises a left longitudinal beam, a right longitudinal beam, a front hydraulic supporting leg, a cross beam, a front jack beam hydraulic supporting leg, a front jack beam, a middle mechanical supporting leg, a lifting cylinder beam, a lifting cylinder beam hydraulic supporting leg, a rear jack beam, a rear mechanical supporting leg and a rear jack beam hydraulic supporting leg.

Description

Technical Field

[0001] This invention relates to the technical field of oil and gas drilling, specifically to a high-load-bearing structural frame. Background Technology

[0002] Currently, oil drilling rigs with drilling depths below 4,000 meters on land are mainly truck-mounted, offering advantages such as flexible transport and rapid relocation. Drilling rigs exceeding 4,000 meters can weigh 100 tons or more when transported with the derrick. Due to limitations in road transport conditions and the insufficient load-bearing capacity of conventional chassis, skid-mounted drilling rigs are often used in these cases.

[0003] Desert drilling rigs are specialized drilling machines developed for the unique environment of desert regions. Compared to conventional drilling rigs of the same tonnage, they offer improved load-bearing capacity and obstacle-avoidance capabilities. However, conventional desert vehicle-mounted drilling rigs, due to limitations in load capacity and beam height, can only be fitted with small desert tires. This results in low ground clearance, insufficient passability, and inadequate obstacle-avoidance capabilities. Furthermore, the vehicle structure restricts the proper arrangement of various mechanical or hydraulic outriggers, leading to a lack of effective pathways for transferring the load from the transport vehicle platform to the ground within the frame. This creates numerous stress concentration points within the frame. Additionally, the limited frame width results in poor stability of the transport vehicle itself during operation.

[0004] With increasing demands for economic efficiency, effectiveness, and operational stability in the relocation and transportation of drilling rigs, customers are increasingly eager for truck-mounted oil drilling rigs exceeding 4,000 meters capable of operating in desert regions. The chassis, as the primary carrier for the relocation and operation of truck-mounted drilling rigs, plays a crucial role. Therefore, it is necessary to design a chassis with a high load-bearing structure adapted to the desert environment, equipped with large, desert-specific tires, to meet the needs of oilfield users both domestically and internationally. Summary of the Invention

[0005] The purpose of this invention is to provide a high-load-bearing structural frame suitable for 5000-meter desert-mounted oil drilling and repair rigs. It adopts a spliced ​​I-beam frame beam structure with an overall width of 3.6 meters. It is equipped with six outriggers, including four hydraulic outriggers and two mechanical outriggers, and is fitted with large desert-specific tires to meet the needs of oil drilling rigs for transportation and operation in desert areas.

[0006] The technical solution of this invention is: a high-load-bearing structural frame, characterized by adopting a spliced ​​I-beam frame beam structure, through a structural combination of variable cross-section upper and lower flanges, an integral web, and locally double webs, and equipped with four sets of hydraulic outriggers and two sets of mechanical outriggers at the front, middle, and rear of the frame, ensuring that the load can be transferred to the ground near the location of greater stress, reducing the internal stress of the frame, and achieving support and load-bearing during vehicle transportation and drilling operations under the premise of lightweight design. The main components include:

[0007] The longitudinal beams are I-beam structures spliced ​​together from the upper flange, lower flange, and web. There is one on each side, and they are the main load-bearing components. The front end is connected to the front bumper, and the rear end is connected to the rear jack beam.

[0008] The crossbeams are I-beam structures made up of upper flanges, lower flanges and webs, totaling five pieces, which connect the left and right longitudinal beams to form an integral frame.

[0009] The front jack beam is an integrally spliced ​​box girder with hydraulic outriggers on both sides. Its upper flange is welded to the lower flange of the left and right longitudinal beams. In the working state, it provides support for the front of the frame and transmits the load to the ground.

[0010] The rear jack beam is a spliced ​​I-beam structure with a partially closed three-plate design. Its upper flange bears part of the load of the derrick during transportation or operation. Hydraulic outriggers are arranged on both sides, and the load is transferred to the ground through the hydraulic outriggers during operation.

[0011] The lifting cylinder beam is welded to the outer side of the longitudinal beam. The upper surface is equipped with ear plates for installing the lifting cylinder. Hydraulic outriggers are installed directly below the ear plates, which can directly transfer most of the load when lifting the derrick to the ground.

[0012] Hydraulic outriggers are controlled by hydraulic valves. Each outrigger can extend or retract individually and is locked in place with a screw nut. They are used to lift and level the vehicle during operation.

[0013] The mechanical outriggers, using a lead screw structure, extend or retract manually by rotating them to support the frame during operation and limit downward deformation of the frame.

[0014] The aforementioned high-load-bearing structural frame is characterized by using variable cross-section upper and lower flanges for the spliced ​​I-beam frame beams. The front end of the frame experiences relatively less stress during operation and transportation, so a normal-width flange is used. Starting from the position of the automatic drilling device, a greater number of concentrated loads are distributed on the frame surface, at which point the lower flange is widened by 140mm. From the winch position to the rear, the stress becomes more concentrated, at which point the upper flange is widened by 90mm. The upper and lower flanges extend from the widened position all the way to the rear of the vehicle.

[0015] The aforementioned high-load-bearing structural frame is characterized by a structure in which the spliced ​​I-beam frame beams adopt a combination of main web and secondary web. Starting from the front jack beam position, the frame begins to bear a large load and vibration. At this time, the addition of secondary webs is used to improve the frame stiffness and stability.

[0016] The aforementioned high load-bearing structural frame is characterized by the installation of hydraulic outriggers at the front of the first axle, the rear of the third axle, below the lifting cylinder beam, and at the rear jack beam, and mechanical outriggers at the rear of the fourth and seventh axles. This avoids stress on the tires during operation and ensures that the load on the platform of the transport vehicle can be transferred to the ground nearby, thereby reducing the stress inside the frame.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. A high-load-bearing structural frame was designed, which has strong load-bearing capacity and large ground clearance, to meet the needs of rapid transportation and operation of vehicle-mounted oil drilling and repair rigs in the 5000-meter desert.

[0019] 2. The flanges of the spliced ​​I-beam frame beams adopt a variable cross-section structure, which reduces weight while ensuring load-bearing capacity.

[0020] 3. The web of the spliced ​​I-beam frame beam adopts a combination of single web and double web, which reduces weight while ensuring load-bearing capacity.

[0021] 4. Six sets of outriggers are installed, including four hydraulic outriggers and two mechanical outriggers, to avoid stress on the tires during operation and to ensure that the load on the platform of the transport vehicle can be transferred to the ground nearby, reducing the stress inside the frame. The outriggers, which are reasonably arranged at key stress points, also improve the stability of the transport vehicle during operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a distribution diagram of the mechanical and hydraulic outriggers in this invention. Detailed Implementation

[0024] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 , Figure 2 As shown, a high load-bearing structure frame mainly includes a left longitudinal beam 1, a right longitudinal beam 2, two front hydraulic outriggers 3, five crossbeams 4, two front jack beam hydraulic outriggers 5, a front jack beam 6, two middle mechanical outriggers 7, two lifting cylinder beams 8, two lifting cylinder beam hydraulic outriggers 9, two rear jack beams 10, two rear mechanical outriggers 11, and two rear jack beam hydraulic outriggers 12. The left longitudinal beam 1 and the right longitudinal beam 2 are welded together as a frame beam by the intermediate cross beam 4; the front hydraulic outrigger 3 is welded between the left longitudinal beam 1 and the right longitudinal beam 2; the front jack beam hydraulic outrigger 5 is installed in the cylinders on both sides of the front jack beam 6; the upper flange of the front jack beam 6 is welded to the lower flange of the left longitudinal beam 1 and the right longitudinal beam 2; the two middle mechanical outriggers are welded to the inner sides of the left longitudinal beam 1 and the right longitudinal beam 2 respectively; the two lifting cylinder beams 8 are welded to the outer sides of the left longitudinal beam 1 and the right longitudinal beam 2 respectively, and the lifting cylinder hydraulic outrigger 9 is installed directly below the lifting cylinder lug plate; the rear jack beam 10 is butt-welded to the ends of the left longitudinal beam 1 and the right longitudinal beam 2, and the rear jack beam hydraulic outrigger 12 is installed on both sides; the two rear mechanical outriggers 11 are installed on the lower flange of the left longitudinal beam 1 and the right longitudinal beam 2 near the rear jack beam 10.

[0026] In working condition, the front hydraulic outrigger 3, front jack beam hydraulic outrigger 5, middle mechanical outrigger 7, lifting cylinder beam hydraulic outrigger 9, rear mechanical outrigger 11, and rear jack beam hydraulic outrigger 12 extend to jointly support the vehicle's own weight and the dynamic load caused by operation. In transport condition, all the outriggers are retracted to their highest position, without affecting the vehicle's passability.

Claims

1. A high-load-bearing structural frame, characterized in that: The vehicle employs a spliced ​​I-beam frame structure, utilizing a combination of variable cross-section upper and lower flanges, an integral web, and locally double webs. Four sets of hydraulic outriggers and two sets of mechanical outriggers are installed at the front, middle, and rear of the frame to ensure that loads are transferred to the ground as close as possible to areas of high stress, reducing internal frame stress. This achieves support and load-bearing capacity during vehicle transportation and drilling operations while maintaining lightweight construction. Key features include: The longitudinal beam is a spliced ​​I-beam structure, the main load-bearing component, connected to the front bumper at the front end and the rear jack beam at the rear end; The crossbeams, spliced ​​with I-beams, connect the left and right longitudinal beams to form an integral frame; The front jack beam is an integrally spliced ​​box girder with hydraulic outriggers on both sides. Its upper flange is welded to the lower flange of the left and right longitudinal beams. In the working state, it provides support for the front of the frame and transmits the load to the ground. The rear jack beam is a spliced ​​I-beam structure with a partially closed three-plate design. Its upper flange bears part of the load of the derrick during transportation or operation. Hydraulic outriggers are arranged on both sides, and the load is transferred to the ground through the hydraulic outriggers during operation. The lifting cylinder beam is welded to the outer side of the longitudinal beam. The upper surface is equipped with ear plates for installing the lifting cylinder. Hydraulic outriggers are installed directly below the ear plates, which can directly transfer most of the load to the ground when lifting the derrick. Hydraulic outriggers are controlled by hydraulic valves. Each outrigger can extend or retract individually and is locked in place with nuts. They are used to support the vehicle body and level the vehicle during operation. The mechanical outriggers, using a lead screw structure, extend or retract manually by rotating them to support the frame during operation and limit downward deformation of the frame.

2. The high load-bearing structural frame as described in claim 1, characterized in that it is spliced... The I-beam frame beams use variable cross-section upper and lower flanges. The front end of the frame experiences relatively less stress during operation and transportation, so a normal width flange is used. Starting from the automatic drilling device, more concentrated loads are distributed on the frame surface, so the lower flange is widened by 140mm. From the winch position to the rear, the stress is more concentrated, so the upper flange is widened by 90mm. The upper and lower flanges extend from the widened position all the way to the rear of the vehicle.

3. The high load-bearing structural frame as described in claim 1, characterized in that it is spliced... The I-beam frame beam adopts a structure combining main web and secondary web. Starting from the front jack beam position, the frame begins to bear large loads and vibrations. At this time, the secondary web is added to improve the frame rigidity and stability.

4. The high load-bearing structural frame as described in claim 1, characterized in that... Hydraulic outriggers are installed in front of the first axle, behind the third axle, below the lifting cylinder beam, and at the rear jack beam. Mechanical outriggers are installed behind the fourth axle and the seventh axle to avoid stress on the tires during operation and to ensure that the load on the platform of the transport vehicle can be transferred to the ground nearby, reducing the stress inside the frame.

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