A method and apparatus for limiting the movement of a marine platform suitable for use with high torque drilling equipment

Abstract

The application provides an offshore platform limiting device suitable for large-torque drilling equipment, which comprises a counter-force fork and two limiting seats, the head of the counter-force fork is detachably connected with the drilling equipment, and the tail of the counter-force fork is limited by the two limiting seats; the two limiting seats are symmetrically arranged on a transverse steel box girder, and the lower end of the transverse steel box girder is connected with two vertical supports; the top of a steel pipe pile is provided with a distribution beam, the lower end of the vertical support is detachably connected with a base on the distribution beam through a pin shaft, and a transverse support is installed between the two bases; a Bailey beam is arranged outside the vertical support, and the Bailey beam is fixed to the distribution beam; the limiting seat comprises a limiting baffle, and a plurality of trapezoidal reinforcing plates are arranged outside the limiting baffle. The limiting device provided by the application can directly transmit the horizontal torque to the distribution beam and the steel pipe pile structure below the Bailey beam of the drilling platform, so that the horizontal torque is resisted together, and meanwhile, the installation and dismounting are convenient.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bridge construction equipment, and particularly relates to a sea platform limiting device and method suitable for large-torque drilling equipment. BACKGROUND

[0002] With the rapid development of infrastructure in China, construction in various complex geological environments such as plateaus, mountainous areas, hilly areas, rivers, lakes and seas gradually increases. In recent years, the whole casing construction method is widely used at home and abroad. However, large drilling equipment generates a large instantaneous horizontal torque during the construction process, and a horizontal limiting device needs to be set to offset the horizontal force generated by the drilling equipment during work. The conventional drilling platform with a Bailey beam structure cannot resist the horizontal torque, and if a drilling platform is designed by combining a steel section with a steel pipe pile, the engineering quantity will be greatly increased. In addition, the traditional counterforce fork limiting device has the disadvantages of complexity in disassembly, many restrictions on construction at the construction site, narrow application range and great limitations. Therefore, it is necessary to optimize and improve the limiting device of the large-torque drilling equipment during work. SUMMARY

[0003] Therefore, the application aims to overcome the defects in the prior art and provides a sea platform limiting device and method suitable for large-torque drilling equipment.

[0004] To achieve the above-mentioned purpose, the technical scheme of the application is as follows:

[0005] A sea platform limiting device suitable for large-torque drilling equipment, comprising a counterforce fork and two limiting seats, the head of the counterforce fork is detachably connected with the drilling equipment, and the tail of the counterforce fork is limited by the two limiting seats.

[0006] The two limiting seats are symmetrically arranged on a transverse steel box girder, and two vertical supports are connected to the lower end of the transverse steel box girder; a distribution beam is arranged at the top of the steel pipe pile, the lower end of the vertical support is detachably connected with the base on the distribution beam through a pin shaft, and a transverse support is arranged between the two bases;

[0007] A Bailey beam is arranged outside the vertical support, and the Bailey beam is fixed to the distribution beam; the limiting seat comprises a limiting baffle, and a plurality of trapezoidal reinforcing plates are arranged outside the limiting baffle; a vertical stiffener is arranged at the connecting hole position of the pin shaft on the vertical support.

[0008] Further, the head of the counterforce fork is connected with the drilling equipment through a pin shaft.

[0009] Further, the limiting baffle and the trapezoidal reinforcing plate are both welded and fixed to the transverse steel box girder.

[0010] Further, the vertical support is fixed to the transverse steel box girder.

[0011] Further, the vertical supports are composed of two vertical rods, and the two vertical rods are connected by a transverse stiffener plate.

[0012] The offshore platform limiting method for large torque drilling equipment using the limiting device is provided below, and the method comprises the following steps:

[0013] A distribution beam is arranged at the top of the steel pipe pile, and the base is symmetrically arranged on the distribution beam;

[0014] The two vertical supports of the limiting device are respectively installed on the corresponding base through a pin shaft, and a transverse support is arranged between the two bases;

[0015] A transverse steel box beam is arranged at the top of the two vertical supports of the limiting device, and two limiting seats are symmetrically arranged on the transverse steel box beam;

[0016] A counterforce fork is arranged between the two limiting seats, the tail of the counterforce fork is limited between the two limiting seats, and the head of the counterforce fork is detachably connected with the drilling equipment.

[0017] Further, the head of the counterforce fork is connected with the drilling equipment through a pin shaft.

[0018] Further, the two ends of the transverse support are respectively detachably connected with the corresponding base through a pin shaft.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] The limiting device provided by the present application can directly transmit the horizontal torque to the distribution beam and the steel pipe pile structure below the drilling platform's Bailey beam, so as to resist the horizontal torque together. The pin shaft is used to connect the limiting device and the distribution beam, and the drilling equipment and the counterforce fork, which has the characteristics of convenient installation and disassembly, good economy and safety. It has good economic and social benefits. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0022] Fig. 1 It is a schematic diagram of the overall arrangement of the drilling platform of the present application;

[0023] Fig. 2 It is a structural schematic diagram of the counterforce fork part in the present application;

[0024] Fig. 3 It is an elevation view of the limiting device in the present application;

[0025] Fig. 4 It is a plan view of the limiting device in the present application;

[0026] Fig. 5 Side view of the limiting device in the present invention;

[0027] Fig. 6 Schematic view of the limiting end connecting pin in the present invention. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments in the present invention and the features in the embodiments can be combined with each other without conflict.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0030] In the description of the present invention, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood through specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0032] A sea platform limiting device suitable for large torque drilling equipment, as shown in Figs. 1 to 6 the drawing, comprising a counter-force fork 5 and two limiting seats 9, the head of the counter-force fork is detachably connected with the drilling equipment 1, and the tail 19 of the counter-force fork is limited by the two limiting seats. Preferably, the head 18 of the counter-force fork is connected with the (base of the) drilling equipment through a device end connecting pin 7, which ensures the convenience of installation and disassembly.

[0033] Two limit seats are symmetrically arranged on the transverse steel box beam 15, and two vertical supports are connected to the lower end of the transverse steel box beam; a plurality of steel pipe piles 8 are arranged on one side of the trestle 4, a distribution beam 2 is arranged on the top of the steel pipe pile, the lower end of the vertical support is detachably connected to the base 6 on the distribution beam through a limit end connecting pin 10, and a transverse support 14 is arranged between the two bases;

[0034] A bailey beam 3 is arranged outside the vertical support, and the bailey beam is fixed to the distribution beam; the limit seat comprises a limit baffle, and a plurality of trapezoidal reinforcing plates are arranged outside the limit baffle; a vertical stiffener 11 is arranged at the connecting hole position of the pin on the vertical support, so as to ensure sufficient installation strength.

[0035] The limit baffle 16 and the trapezoidal reinforcing plate 17 are both welded and fixed to the transverse steel box beam. The left and right limit baffles (limit seats) ensure the decomposition of the huge horizontal torque generated by the drilling equipment, and improve the stability of the equipment and the platform.

[0036] The two ends of the transverse support are also detachably connected to the corresponding bases through limit end connecting pins, that is, the transverse support and the corresponding vertical support are connected to the base through the same limit end connecting pin, the structure is simplified, the stress condition is better, and the stress point is more definite. The vertical support is fixed between the transverse steel box beam. The entire limit device is installed on the distribution beam through the pin, so as to ensure that the huge torque generated during the operation of the drilling equipment can be smoothly decomposed, and the construction safety is improved.

[0037] The vertical support is composed of two vertical rods 13, and the two vertical rods are connected through a transverse stiffener 12. The limit device can directly transmit the horizontal torque to the distribution beam and the steel pipe pile structure below the bailey beam of the drilling platform, so as to resist the horizontal torque together. The limit device and the distribution beam, and the drilling equipment and the reaction fork are connected through pin shafts, which has the characteristics of convenient installation and disassembly, economy and safety. It has good economic benefit and social benefit.

[0038] The following provides a method for limiting an offshore platform suitable for large-torque drilling equipment, comprising the following steps:

[0039] A distribution beam is arranged on the top of the steel pipe pile, and bases are symmetrically arranged on the distribution beam;

[0040] Two vertical supports of the limit device are respectively installed on the corresponding bases through pins, and a transverse support is arranged between the two bases;

[0041] A transverse steel box beam is arranged on the top of the two vertical supports of the limit device, and two limit seats are symmetrically arranged on the transverse steel box beam;

[0042] The counter-force fork tail is limited between the two limiting seats, and the counter-force fork head is detachably connected with the drilling equipment. The counter-force fork tail is provided with a V-shaped anti-falling structure, which can avoid the counter-force fork from being separated from the two limiting seats, and improve the reliability of the device in the application process. The counter-force fork head is connected with the drilling equipment through a pin shaft. The two ends of the transverse support are respectively detachably connected with the corresponding base through a pin shaft.

[0043] The offshore platform limiting device provided by the application can directly transmit the horizontal torque generated by the drilling equipment during work to the distribution beam and the steel pipe pile structure below the drilling platform's Bailey beam, and the steel pipe pile can resist the horizontal torque through the horizontal connection system. Since the limiting device is connected with the platform through a pin shaft, the device has the characteristics of convenient installation and disassembly, good economy and safety.

[0044] The above only describes the preferred embodiments of the application, and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. An offshore platform restraint suitable for use with a high-torque drilling apparatus, characterised in that: The counter-force fork is detachably connected with the drilling equipment at the head of the counter-force fork, and the tail of the counter-force fork is limited by the two limiting seats; The two limiting seats are symmetrically arranged on the transverse steel box girder, and the lower end of the transverse steel box girder is connected with two vertical supports; the top of the steel pipe pile is provided with a distribution beam, the lower end of the vertical support is detachably connected with the base on the distribution beam through a pin shaft, and a transverse support is installed between the two bases; A bailey beam is arranged outside the vertical support, and the bailey beam is fixed to the distribution beam; the limiting stop plate is provided with a plurality of trapezoidal reinforcing plates outside the limiting stop plate; the vertical support is provided with a vertical stiffener plate at the connecting hole position of the pin shaft; The limiting stop plate and the trapezoidal reinforcing plate are both welded and fixed to the transverse steel box girder, and the vertical support is fixedly connected with the transverse steel box girder.

2. An offshore platform restraint suitable for use with a high-torque drilling apparatus as claimed in claim 1, characterised in that: The head of the counter-force fork is connected with the drilling equipment through a pin shaft.

3. An offshore platform restraint suitable for use with a high-torque drilling apparatus as defined in claim 1, wherein: The vertical support is composed of two vertical rods, and the two vertical rods are connected through a transverse stiffener plate.

4. A method of limiting the movement of a platform in response to a large torque drilling operation using the limiting device of claim 1, wherein, The method comprises the following steps: A distribution beam is arranged on the top of the steel pipe pile, and a base is symmetrically arranged on the distribution beam; Two vertical supports of the limiting device are respectively installed on the corresponding base through a pin shaft, and a transverse support is arranged between the two bases; A transverse steel box girder is arranged on the top of the two vertical supports of the limiting device, and two limiting seats are symmetrically arranged on the transverse steel box girder; A counter-force fork is arranged between the two limiting seats, so that the tail of the counter-force fork is limited between the two limiting seats, and the head of the counter-force fork is detachably connected with the drilling equipment.

5. A method of limiting the movement of an offshore platform relative to a drilling apparatus according to claim 4, wherein: The head of the counter-force fork is connected with the drilling equipment through a pin shaft.

6. A method of limiting the movement of an offshore platform relative to a drilling apparatus according to claim 4, wherein: The two ends of the transverse support are respectively detachably connected with the corresponding base through a pin shaft.

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