An underwater super-large diameter annular groove construction system

Abstract

The present application discloses an underwater super-large diameter annular groove construction system, comprising: a drilling rig, a drilling template device, and a cable device, wherein the drilling template device comprises a positioning column, a guide mechanism, and a rotary mechanism, and the drill rod of the drilling rig extends from the lower end of the guide mechanism from top to bottom. When construction is required, the drilling template device is vertically lowered to the position to be constructed through the cable device, and the lower end of the positioning column is pressed against the position to be constructed; then the cable device is separated from the drilling template device, and the drilling rig is started to drill a hole at the position to be constructed, and the guide mechanism is driven to rotate around the positioning column by the rotary mechanism, so that a circle of annular groove holes can be constructed. During the construction process, the drilling template device can be adjusted vertically in real time by the cable device to ensure the verticality of the drill hole, and the positioning column is pressed against the position to be constructed to improve the stability of the drill hole. In addition, there is no need to level the inclined seabed surface, which can improve the construction efficiency of the annular groove hole and reduce the construction difficulty.

Description

Technical Field

[0001] The present application relates to the field of underwater construction technology, and in particular to an underwater super-large diameter annular groove construction system. Background Art

[0002] With the development of cross-sea bridges into the deep sea and the constraints of bridge routes, bridge piers may be located in harsh environments such as deep water and cliff-like seabed. Therefore, super-large and super-deep piles are needed to meet the requirements of bridge use. Deep-sea super-large bridge piers are usually constructed through piling.

[0003] When constructing large-diameter bored piles in a deep, fast-flowing, and wave-ridden marine environment, if traditional construction methods such as caissons and cofferdams are used to block ocean currents, there will be great safety hazards, great difficulty in control, and inestimable construction costs. Currently, the domestic method of burying steel casings is commonly used to block ocean currents.

[0004] There are currently two common methods for burying steel casing:

[0005] 1. After installing the steel casing guide frame on the construction platform, the steel casing is directly inserted into the seabed using a vibratory hammer. The disadvantage of this method is that in seabed environments with inclined rock, high rock hardness, and a large number of isolated boulders, the steel casing is very likely to buckle and curl, resulting in material waste, construction delays, and even the loss of piles. In addition, it is difficult to level the seabed and poses a high risk.

[0006] 2. After installing the steel casing guide frame on the construction platform, a rotary drilling rig is used to expand the bottom while lowering the steel casing. This method is difficult to control. The steel casing cannot be fixed to the seabed before drilling. Large diameter holes require the rig to expand the hole in stages. During offshore construction, the ocean currents are strong and the seabed is difficult to level, which can easily cause the steel casing to tip over. It also requires extremely strong drilling platforms, making the construction process extremely difficult to control. Summary of the Invention

[0007] The purpose of this application is to provide an underwater ultra-large diameter annular groove construction system that can reduce construction difficulty and cost and improve construction efficiency.

[0008] To achieve the above objectives, this application provides the following technical solutions:

[0009] An underwater super-large diameter annular groove construction system, comprising:

[0010] drilling rig;

[0011] The drilling template device includes a positioning column, a guide mechanism, and a rotary mechanism. The lower end of the positioning column is used to tighten at the position to be constructed. The drill rod of the drilling rig extends from the lower end of the guide mechanism from top to bottom. The rotary mechanism is used to drive the guide mechanism to rotate around the positioning column.

[0012] The cable device is used to lower the drilling template device vertically to the location to be constructed.

[0013] In some embodiments, the drilling template device further includes a bearing seat and a positioning guide sleeve, the upper end of the guide mechanism is rotatably connected in the positioning guide sleeve, and the positioning guide sleeve is fixed on the bearing seat.

[0014] In some embodiments, the guide mechanism includes at least one guide section of the frame structure, and adjacent guide sections are detachably connected.

[0015] In some embodiments, the guide mechanism also includes a positioning column mounting platform and a positioning joint. The positioning column mounting platform, the guide joint and the positioning joint are detachably connected in sequence from top to bottom. The positioning column mounting platform is rotatably connected in the positioning guide sleeve, and a nylon positioning sleeve is provided on the inner side of the positioning joint.

[0016] In some embodiments, the guide mechanism includes a vertically arranged guide tube, a support rod device is provided on the inner side of the lower end outlet of the guide tube, a retaining ring is provided at the lower end of the support rod device, and the retaining ring and the support rod device are fixed on the guide tube.

[0017] In some embodiments, the positioning column includes at least one adjustment column, and adjacent adjustment columns are detachably connected.

[0018] In some embodiments, the positioning column also includes a mounting column, the upper end of the mounting column is connected to the guide mechanism through a slewing bearing, the upper end of the adjusting column is detachably connected to the lower end of the mounting column, and the lower end of the bottom adjusting column is provided with a supporting cylinder, and the lower end of the supporting cylinder is provided with a supporting claw.

[0019] In some embodiments, the rotating mechanism includes a telescopic assembly, a movable seat, a motor, and a friction wheel. The motor is installed on the movable seat, and the telescopic assembly is fixed on the guide mechanism to drive the movable seat to move so that the friction wheel contacts the inner side of the positioning guide sleeve, and the motor is used to drive the friction wheel to rotate.

[0020] In some embodiments, the telescopic assembly includes a telescopic cylinder, a fixed seat and a compression spring. The fixed seat is fixed on the guide mechanism, the telescopic cylinder is fixed on the fixed seat, the movable seat is slidably connected to the fixed seat, the two ends of the compression spring are respectively connected to the fixed seat and the movable seat, and the piston rod of the telescopic cylinder is used to tighten on the friction wheel.

[0021] In some embodiments, the cable device includes a winch, a vertical adjustment cable, a traction rope, a float and a decoupler. The winch is used to be fixed on the drilling platform, the upper end of the vertical adjustment cable is connected to the winch, the lower end of the vertical adjustment cable is connected to the decoupler, the decoupler is detachably connected to the lower end of the drilling template device, the upper end of the traction rope is connected to the float, and the lower end of the traction rope is connected to the vertical adjustment cable.

[0022] Compared with the existing technology, the above technical solution has the following advantages:

[0023] The present application provides a construction system for prefabricated annular slots in steel jackets for offshore piling, comprising a drilling rig, a drill template, and a cable assembly. The drill template assembly includes a positioning column, a guide mechanism, and a slewing mechanism. The drill rod of the drilling rig extends downward from the lower end of the guide mechanism. When construction is required, the drill template assembly is vertically lowered to the intended construction location via the cable assembly, with the lower end of the positioning column pressed against the intended construction location to resist the influence of ocean currents on the drilling rig. The cable assembly is then disconnected from the drill template assembly, and the drilling rig is started to drill a hole at the intended construction location. The slewing mechanism drives the guide mechanism to rotate around the positioning column, thereby constructing a ring of annular slots. During the lowering of the drill template assembly, the cable assembly can be used to adjust the verticality of the drilled hole in real time to ensure the verticality of the drilled hole. Furthermore, by pressing the positioning column against the intended construction location, the stability of the drilled hole is improved. Furthermore, there is no need to level the inclined seabed surface, thereby improving the efficiency and reducing the difficulty of the annular slot construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0025] Figure 1 A schematic structural diagram of an underwater ultra-large diameter annular groove construction system provided in a specific embodiment of the present application;

[0026] Figure 2 It is a schematic diagram of the main structure of the drilling jig device;

[0027] Figure 3 for Figure 2 AA section view in the figure;

[0028] Figure 4 It is a schematic diagram of the top view of the drilling jig device;

[0029] Figure 5 The main structural diagram of the guide mechanism is as follows;

[0030] Figure 6 for Figure 5 BB section view in the figure;

[0031] Figure 7 for Figure 6 A magnified view of area Ⅰ in FIG;

[0032] Figure 8 This is a schematic diagram of the main structure of the positioning column;

[0033] Figure 9It is a cross-sectional structural diagram of the rotary mechanism;

[0034] Figure 10 Schematic diagram of the cable device.

[0035] The reference numerals are as follows:

[0036] 1 is a drilling rig;

[0037] 2 is a drilling jig device;

[0038] 2-1 is the positioning column, 2-1-1 is the installation column, 2-1-2 is the adjustment column, 2-1-3 is the support cylinder, and 2-1-4 is the support claw;

[0039] 2-2 is the guide mechanism, 2-2-1 is the positioning column mounting platform, 2-2-2 is the guide joint, 2-2-3 is the positioning joint, 2-2-4 is the nylon positioning sleeve, 2-2-5 is the retaining ring, 2-2-6 is the support rod, and 2-2-7 is the bolt;

[0040] 2-3 is a positioning guide sleeve;

[0041] 2-4 is a slewing bearing;

[0042] 2-5 is the slewing mechanism, 2-5-1 is the telescopic cylinder, 2-5-2 is the fixed seat, 2-5-3 is the limit pin, 2-5-4 is the movable seat, 2-5-5 is the compression spring, 2-5-6 is the friction wheel, 2-5-7 is the motor, and 2-5-8 is the reduction gear;

[0043] 2-6 are support and positioning seats;

[0044] 2-7 are hanging beams;

[0045] 3 is a cable device, 3-1 is a winch, 3-2 is a pulley, 3-3 is a vertical adjustment cable, 3-4 is a release device, 3-5 is a traction rope, and 3-6 is a float. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] Please refer to Figures 1 to 10 , Figure 1 A schematic structural diagram of an underwater ultra-large diameter annular groove construction system provided in a specific embodiment of the present application; Figure 2 It is a schematic diagram of the main structure of the drilling jig device; Figure 3 for Figure 2 AA section view in the figure; Figure 4 It is a schematic diagram of the top view of the drilling jig device; Figure 5 The main structural diagram of the guide mechanism is as follows; Figure 6 for Figure 5 BB section view in the figure; Figure 7 for Figure 6 A magnified view of area Ⅰ in FIG; Figure 8 This is a schematic diagram of the main structure of the positioning column; Figure 9 It is a cross-sectional structural diagram of the rotary mechanism; Figure 10 Schematic diagram of the cable device.

[0048] An underwater ultra-large diameter annular groove construction system provided in an embodiment of the present application includes: a drilling rig 1, a drilling template device 2, and a cable device 3, wherein the drilling template device 2 includes a positioning column 2-1, a guide mechanism 2-2, and a rotating mechanism 2-5. The drill rod of the drilling rig 1 extends from the lower end of the guide mechanism 2-2 from top to bottom. When construction is required, the drilling template device 2 is connected to the cable device 3 on the construction platform, and the drilling template device 2 is vertically lowered to the position to be constructed through the cable device 3. The lower end of the positioning column 2-1 is tightened at the position to be constructed so that the positioning column 2-1 supports the drilling template device 2, thereby resisting the influence of ocean currents on the drilling rig 1; then the cable device 3 is separated from the drilling template device 2, and then the drilling rig 1 is started to drill holes at the position to be constructed, and the guide mechanism 2-2 is driven to rotate around the positioning column 2-1 through the rotating mechanism 2-5 to rotate to another group of engaging holes. Through the cyclic operation of the drilling rig 1, the construction of all annular groove holes can be completed. When lowering the drilling template device, the drilling template device 2 can be adjusted in real time through the cable device 3 to ensure the verticality of the drill hole. In addition, the positioning column 2-1 is used to tighten the construction position, which can improve the stability of the drill hole. In addition, there is no need to level the inclined seabed surface, so the construction efficiency of the annular groove hole can be improved and the construction difficulty can be reduced.

[0049] In some embodiments, as Figure 2 、 Figure 3 and Figure 4As shown, the template device 2 also includes a bearing seat and a positioning guide sleeve 2-3. The bearing seat is installed on the construction platform. The upper end of the guide mechanism 2-2 is rotatably connected to the positioning guide sleeve 2-3. The positioning guide sleeve 2-3 is fixed to the bearing seat, that is, the positioning guide sleeve 2-3 mainly supports the guide mechanism 2-2 to ensure that the guide mechanism 2-2 rotates stably within the positioning guide sleeve 2-3. The bearing seat includes a hanging beam 2-7 and a supporting positioning seat 2-6. The supporting positioning seat 2-6 can be leveled and installed in the construction platform by a crane through four hanging beams 2-7. The supporting positioning seat 2-6 is connected to the construction platform through several inclined surfaces, which are locked by wedge blocks. The supporting positioning seat 2-6 mainly bears the friction force of the guide mechanism 2-2 being lowered and the reaction force of the slewing mechanism 2-5. After the positioning guide sleeve 2-3 is positioned and installed in the supporting positioning seat 2-6, the assembled guide mechanism 2-2, slewing mechanism 2-5 and positioning column 2-1 are hoisted into the positioning guide sleeve 2-3.

[0050] In some embodiments, as Figure 5 、 Figure 6 and Figure 7 As shown, the guide mechanism 2-2 includes at least one guide section 2-2-2 of a frame structure. When there are multiple sections, adjacent guide sections 2-2-2 can be detachably connected. By splicing the guide sections 2-2-2 together, it can adapt to the piling requirements of different depths. In addition, the guiding mechanism 2-2 also includes a positioning column mounting platform 2-2-1 and a positioning joint 2-2-3. The positioning column mounting platform 2-2-1 and the positioning joint 2-2-3 are also preferably frame mechanisms. The positioning column mounting platform 2-2-1, the guide joint 2-2-2 and the positioning joint 2-2-3 are detachably connected in sequence from top to bottom. The positioning column mounting platform 2-2-1 is rotatably connected in the positioning guide sleeve 2-3, wherein the upper edge of the positioning column mounting platform 2-2-1 is an arc structure, forming a rotational connection relationship with the positioning guide sleeve 2-3 to release the overturning moment before the drilling template device 2 is pushed into the seabed; a nylon positioning sleeve 2-2-4 is provided on the inner side of the positioning joint 2-2-3 to reduce the friction when the guiding mechanism 2-2 rotates.

[0051] Furthermore, the guide mechanism 2-2 includes a vertically arranged guide tube, and the number of the guide tubes is preferably multiple, and they are evenly arranged along the circumferential direction of the guide mechanism 2-2, and each guide tube corresponds to a drilling rig 1. For the guide mechanism 2-2 with multiple guide sections 2-2-2, the guide tube is a vertical tube on the circumferential side of each guide section 2-2-2, and the vertical tubes on each guide section 2-2-2 are aligned up and down. A support rod 2-2-6 is provided on the inner side of the outlet at the lower end of the guide tube, and a retaining ring 2-2-5 is provided at the lower end of the support rod 2-2-6. The retaining ring 2-2-5 and the support rod 2-2-6 are fixed on the guide tube, and can be fixed by bolts 2-2-7. The support rod 2-2-6 can ensure the precise positioning of the drilling rig 1.

[0052] In some embodiments, as Figure 8 As shown, the positioning column 2-1 includes at least one adjustment column 2-1-2. When multiple adjustment columns 2-1-2 are selected, adjacent adjustment columns 2-1-2 can be detachably connected. By assembling multiple adjustment columns 2-1-2, drilling requirements at different sea depths can be met. In addition, the positioning column 2-1 also includes a mounting column 2-1-1. The upper end of the mounting column 2-1-1 is connected to the guide mechanism 2-2 via a slewing bearing 2-4. The upper end of the adjustment column 2-1-2 is detachably connected to the lower end of the mounting column 2-1-1. The lower end of the bottommost adjustment column 2-1-2 is equipped with a support cylinder 2-1-3. The lower end of the support cylinder 2-1-3 is equipped with a support claw 2-1-4. The support cylinder 2-1-3 can push the support claw 2-1-4 into the rock on the seabed, thereby fixing the positioning column 2-1 to the seabed and bearing the weight of the entire system.

[0053] In some embodiments, as Figure 9 As shown, the slewing mechanism 2-5 includes a telescopic assembly, a movable seat 2-5-4, a motor 2-5-7, and a friction wheel 2-5-6. The motor 2-5-7 is mounted on the movable seat 2-5-4. The output gear of the motor 2-5-7 can mesh with the reduction gear 2-5-8. The reduction gear 2-5-8 can be connected to the friction wheel 2-5-6 via a pin. The surface of the friction wheel 2-5-6 can be covered with a layer of rubber to increase friction. The motor 2-5-7 is preferably a cycloidal motor 2-5-7. The telescopic assembly is fixed to the guide mechanism 2-2. The telescopic assembly can drive the movable seat 2-5-4 to move so that the friction wheel 2-5-6 contacts the inner side of the positioning guide sleeve 2-3. The friction wheel 2-5-6 is driven to rotate by the motor 2-5-7. Under the action of friction, the guide mechanism 2-2 can rotate within the positioning guide sleeve 2-3. Among them, the telescopic assembly includes a telescopic cylinder 2-5-1, a fixed seat 2-5-2 and a compression spring 2-5-5. The fixed seat 2-5-2 is fixed on the guide mechanism 2-2, the telescopic cylinder 2-5-1 is fixed on the fixed seat 2-5-2, the movable seat 2-5-4 is slidingly connected to the fixed seat 2-5-2, and the two ends of the compression spring 2-5-5 are respectively connected to the fixed seat 2-5-2 and the movable seat 2-5-4. Before the guide mechanism 2-2 is hoisted into the positioning guide sleeve 2-3, the fixed seat 2-5-2 and the movable seat 2-5-4 are limited by the positioning pin. After hoisting in, the positioning pin is taken out so that the movable seat 2-5-4 can move relative to the fixed seat 2-5-2, and the piston rod of the telescopic cylinder 2-5-1 can be pressed against the friction wheel 2-5-6 when it is extended.

[0054] In some embodiments, as Figure 10As shown, the cable device 3 includes multiple groups of winches 3-1, vertical adjustment cables 3-3, traction ropes 3-5, floats 3-6 and unhookers 3-4. The connection method of each group is as follows: the winch 3-1 is fixed on the drilling platform, the upper end of the vertical adjustment cable 3-3 is connected to the winch 3-1, and the lower end of the vertical adjustment cable 3-3 is connected to the unhooker 3-4. The unhooker 3-4 is detachably connected to the lower end of the drilling template device 2. In order to facilitate the control of the direction of the vertical adjustment cable 3-3, a pulley 3-2 is provided on the drilling platform. After the vertical adjustment cable 3-3 is led out from the winch 3-1, it first passes through the pulley 3-2 and then is connected to the unhooker 3-4; the upper end of the traction rope 3-5 is connected to the float 3-6, and the lower end of the traction rope 3-5 is connected to the vertical adjustment cable 3-3. Before lowering the template assembly 2, the vertical adjustment cable 3-3 must be connected to the lower end of the template assembly 2. When the template assembly 2 touches the bottom, the winch 3-1 reels in the rope. Specifically, the rope retraction amount of each winch 3-1 can be controlled by a sensor to adjust the vertical adjustment of the template assembly 2. After the vertical adjustment, the unhooker 3-4 is controlled to separate from the lower end of the template assembly 2. After the drilling is completed, the float 3-6 is salvaged at the next pile position, the drilling platform is hoisted out, and the above steps are repeated in sequence.

[0055] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0056] The above is a detailed introduction to an underwater super-large diameter annular groove construction system provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. An underwater super-large diameter annular groove construction system, characterized in that: include: drilling rig; A drilling template device, comprising a positioning column, a guide mechanism, and a rotary mechanism. The lower end of the positioning column is used to tighten at the position to be constructed. The drill rod of the drilling rig extends from the lower end of the guide mechanism from top to bottom. The rotary mechanism is used to drive the guide mechanism to rotate around the positioning column. A cable device, the cable device is used to vertically lower the drilling template device to a position to be constructed; The jig device further comprises a bearing seat and a positioning guide sleeve, wherein the upper end of the guide mechanism is rotatably connected to the positioning guide sleeve, and the positioning guide sleeve is fixed to the bearing seat; The guide mechanism comprises at least one guide section of a frame structure, and adjacent guide sections are detachably connected; The guide mechanism also includes a positioning column mounting platform and a positioning section. The positioning column mounting platform, the guide section and the positioning section are detachably connected in sequence from top to bottom. The positioning column mounting platform is rotatably connected to the positioning guide sleeve. A nylon positioning sleeve is provided on the inner side of the positioning section. The rotating mechanism includes a telescopic assembly, a movable seat, a motor, and a friction wheel. The motor is installed on the movable seat. The telescopic assembly is fixed on the guide mechanism and is used to drive the movable seat to move so that the friction wheel contacts the inner side of the positioning guide sleeve. The motor is used to drive the friction wheel to rotate.

2. The construction system according to claim 1, characterized in that: The guide mechanism includes a vertically arranged guide tube, a support rod device is provided on the inner side of the lower end outlet of the guide tube, a retaining ring is provided at the lower end of the support rod device, and the retaining ring and the support rod device are fixed on the guide tube.

3. The construction system according to claim 1, characterized in that: The positioning column includes at least one adjusting column, and adjacent adjusting columns are detachably connected.

4. The construction system according to claim 3, characterized in that: The positioning column also includes a mounting column, the upper end of which is connected to the guide mechanism via a slewing bearing, the upper end of the adjusting column is detachably connected to the lower end of the mounting column, and the lower end of the adjusting column at the bottom is provided with a supporting oil cylinder, and the lower end of the supporting oil cylinder is provided with a supporting claw.

5. The construction system according to claim 1, characterized in that: The telescopic assembly includes a telescopic oil cylinder, a fixed seat and a compression spring. The fixed seat is fixed on the guide mechanism, the telescopic oil cylinder is fixed on the fixed seat, the movable seat is slidably connected to the fixed seat, the two ends of the compression spring are respectively connected to the fixed seat and the movable seat, and the piston rod of the telescopic oil cylinder is used to tighten against the friction wheel.

6. The construction system according to any one of claims 1 to 5, characterized in that: The cable device includes a winch, a vertical adjustment cable, a traction rope, a float and a decoupler. The winch is used to be fixed on the drilling platform, the upper end of the vertical adjustment cable is connected to the winch, the lower end of the vertical adjustment cable is connected to the decoupler, the decoupler is detachably connected to the lower end of the drilling template device, the upper end of the traction rope is connected to the float, and the lower end of the traction rope is connected to the vertical adjustment cable.

Images