Fully rotary drilling rig for removing underground shield segments

Abstract

The present invention relates to the technical field of drilling rig construction, and discloses a construction device for a full-rotation drilling rig to remove underground shield segments, including a drilling rig body, the drilling rig body is connected to a second mechanism, the second mechanism includes a steel casing structure, the drilling rig body is provided with a clamping device to clamp and drive the steel casing structure to generate downward pressure and torque, the steel casing structure is movably connected to a cutting structure through a balance bar, so that the steel casing structure can cut underground obstacles. The cutting structure can be driven by a conversion mechanism to movably convert its position relative to the steel casing structure, the cutting structure includes a conversion plate and a cutting part that are fixedly connected to each other, the conversion plate uses the balance bar as a conversion fulcrum and is movably connected to each other, the conversion mechanism drives and connects the conversion plate, the conversion plate rotates to drive the cutting part, and a suitable cutting part can be replaced immediately to perform cutting, thereby achieving the purpose of improving the efficiency of cutting obstacles.

Description

Technical Field

[0001] The invention relates to the technical field of drilling rig construction, and in particular to construction equipment for a full-rotation drilling rig to remove underground shield segments. Background Art

[0002] The full name of the full-swing drilling rig is the full-swing drilling rig for full casing. It has the same functions as the pipe rolling machine. Both are equipment that uses steel casing for drilling. They are collectively called full-swing drilling rigs. Full-swing drilling rigs are also called Benoit drilling rigs. They were first successfully developed by the French Benoit company in the 1970s. The original full-swing drilling rigs were shaking types, that is, the steel casing was reciprocated around its center at a certain angle by using the extension and contraction of two shaking hydraulic cylinders, so that the cutting structure at the bottom of the steel casing shears the soil and reduces the resistance of the steel casing to be pressed in; the steel casing is pressed into or pulled out of the soil by the other two hydraulic cylinders. With the development of pile foundation construction, the diameter of the piles is getting larger and larger, and the construction efficiency and precision requirements are getting higher and higher. The shaking casing device can no longer meet the construction requirements due to its small torque and low efficiency.

[0003] With the continuous development of the economy, in foundation pit support and pile foundation construction, underground shield segments left over from previous construction are often encountered, especially in construction sites such as subway stations, underground smart garages, underground building structures and reservoirs. If not handled, these old segments will often affect the construction of pile foundation projects. For example, it will cause subsequent pile foundation construction to be blocked, affect the verticality of the pile body, and have an adverse effect on the quality of the pile body. At the same time, the construction efficiency is low, which has an adverse effect on the construction period. Therefore, it is generally required that the construction unit must clear it before constructing a new foundation. However, before clearing the old segments, there are often obstacles such as soil, rock formations and reinforced concrete, so the obstacles need to be cut off first. According to previous experience in removing old segments, it is usually excavated by machine equipment or directly excavated by rotary drilling rigs. These methods are time-consuming and labor-intensive. Due to the influence of obstacles, the equipment used will also cause wear and tear. Some use cutting equipment to remove obstacles, but the cutting efficiency of the equipment used is low and the cutting structure cannot be flexibly switched. Summary of the invention

[0004] The purpose of the present invention is to provide construction equipment for removing underground shield segments with a full-rotation drilling rig, aiming to solve the problem in the prior art that during foundation pit construction, due to the presence of obstacles, the construction equipment is worn when crushing and removing old segments left underground, the cutting structure used cannot be replaced immediately, and the cutting efficiency is low.

[0005] The present invention is implemented as follows: the construction equipment of the full-rotation drilling rig for removing underground shield segments comprises a drilling rig body, the drilling rig body is connected with a second mechanism, the second mechanism comprises a steel casing structure, the drilling rig body drives the steel casing structure to generate downward pressure and torque, the steel casing structure is movably connected with a cutting structure through a balance bar, and the cutting structure is driven by a conversion mechanism to movably convert positions relative to the steel casing structure;

[0006] The cutting structure comprises a conversion plate and a cutting part which are fixedly connected to each other. The conversion plates are movably connected to each other with the balance bar as a conversion fulcrum. The conversion mechanism drives and connects the conversion plates.

[0007] Furthermore, the cutting portion can be symmetrically fixedly connected to the two ends of the conversion plate, the middle portion of the conversion plate is movably connected to the balance bar, and the two ends of the conversion plate are also respectively connected to conversion mechanisms that move in different directions.

[0008] Furthermore, the conversion mechanism includes a first transmission member and a second transmission member, the first transmission member and the second transmission member are in a vertical connection relationship, one end of the second transmission member is vertically connected to the first transmission member, and the other end is connected to the conversion plate, and the two ends of the conversion plate are respectively connected to the second transmission member with different action directions.

[0009] Furthermore, the two ends of the conversion plate are connected to the second transmission member moving in opposite directions, the conversion plate uses the balance plate as a fulcrum and is pulled by the second transmission member moving in opposite directions to rotate, and the rotation angle of the conversion plate is 0 to 180°;

[0010] The cutting portions connecting different ends of the conversion plate are reversed in position.

[0011] Furthermore, the cutting part includes a fixed plate and a gear, one end of the fixed plate is fixedly connected to the conversion plate, and the other end is connected to the gear, the end of the fixed plate connected to the gear can be set to a semicircular shape, and the gear can be set along its semicircular trajectory.

[0012] Furthermore, the drilling rig body includes a guide column, a clamping device, a base and a driving device, and the driving device includes a motor, an oil cylinder or a pneumatic cylinder.

[0013] Furthermore, it also includes a first mechanism, which includes a drill rod, the upper end of which is driven and connected by a cylinder in the drilling rig body, and the lower end of which is placed in the steel casing structure.

[0014] Furthermore, it also includes a third mechanism, the third mechanism includes a drill bit and a punching and grabbing structure, the punching and grabbing structure is provided with a grabbing structure, the upper end of the drill bit is provided with a thread and is driven and connected by the oil cylinder in the drilling rig body, the lower end of the drill bit is fixedly connected to the punching and grabbing structure and is placed in the steel casing structure;

[0015] The punching and grabbing structure is a bucket-shaped structure, in which a wedge-shaped hammer is arranged, and the grabbing structure is arranged around the edge of the bottom opening.

[0016] Furthermore, the clamping device clamps and connects the steel casing structure, and drives it to move up and down, rotate forward and reverse, so that the steel casing structure generates downward pressure and torque;

[0017] The upper end of the conversion mechanism built into the steel casing structure is driven and connected by the motor, and the lower end is connected to the cutting structure.

[0018] Furthermore, both side surfaces of the conversion plate of the cutting structure are movably connected to the balance bar.

[0019] Compared with the prior art, the construction equipment of the full-rotation drilling rig for removing underground shield segments includes a drilling rig body, the drilling rig body is connected with a second mechanism, the second mechanism includes a steel casing structure, the drilling rig body is provided with a clamping device to clamp and drive the steel casing structure to generate downward pressure and torque, the steel casing structure is movably connected with a cutting structure through a balance bar, so that the steel casing structure can cut underground obstacles. The cutting structure can be driven by a conversion mechanism to movably convert its position relative to the steel casing structure, the cutting structure includes a conversion plate and a cutting part that are fixedly connected to each other, the conversion plate uses the balance bar as a conversion fulcrum and is movably connected to each other, the conversion mechanism drives and connects the conversion plate, the conversion plate rotates to drive the cutting part, and the appropriate cutting part can be replaced immediately for cutting, thereby achieving the purpose of improving the efficiency of cutting obstacles. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the connection relationship between the drilling rig body, the first mechanism and the second mechanism of the present invention;

[0021] Figure 2 It is a schematic diagram of the connection relationship between the drilling rig body, the second mechanism and the third mechanism of the present invention;

[0022] Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle;

[0023] Figure 4 It is a schematic diagram of the conversion structure driving the connection cutting structure of the present invention.

[0024] In the figure: 01-drilling rig body, 011-guide column, 012-base, 013-holding device, 1-first mechanism, 11-drill rod, 2-second mechanism, 21-steel casing structure, 211-cutting structure, 2111-conversion plate, 2112-cutting part, 21121-fixed plate, 21122-tooth wheel, 3-third mechanism, 31-drill bit, 32-punching and grabbing structure, 321-grabbing structure, 33-wedge hammer, 4-conversion mechanism, 41 first transmission member, 42 second transmission member, 5-balance rod, a-ground, b-old pipe segment. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0027] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] Reference Figures 1 to 4 The figure shows a preferred embodiment of the present invention.

[0029] The present invention provides a construction device for removing underground shield segments by a full-rotation drilling rig, such as Figures 2 to 4 As shown, the construction equipment of the full-rotation drilling rig for removing underground shield segments includes a drilling rig body 01, the drilling rig body 01 is connected to a second mechanism 2, the second mechanism 2 includes a steel casing structure 21, the drilling rig body 01 drives the steel casing structure 21 to generate downward pressure and torque, the steel casing structure 21 is movably connected to a cutting structure 211 through a balance bar, and the cutting structure 211 can be driven by a conversion mechanism 4 to movably convert positions relative to the steel casing structure 21. The cutting structure 211 includes a conversion plate 2111 and a cutting part 2112 that are fixedly connected to each other, the conversion plate 2111 uses the balance bar 5 as a conversion fulcrum and is movably connected to each other, and the conversion mechanism 4 drives and connects the conversion plate 2111.

[0030] With respect to the corresponding scheme of the above-mentioned figures, the following specific embodiments are described:

[0031] First embodiment

[0032] Please refer to Figure 1 As shown, in this embodiment, the construction equipment of the full-rotation drilling rig for removing underground shield segments includes a drilling rig body 01, the drilling rig body 01 includes a guide column 011, a clamping device 013, a base 012 and a driving device, the driving device is arranged in the drilling rig body, the driving device includes a motor, a cylinder or a gas cylinder, and the drilling rig body 01 should be placed on the flat bottom surface of the new foundation construction before construction. Specifically, the base 012 supports the upper part of the drilling rig body 01, the guide column 011 is used to adjust the height of the drilling rig body 01, and the clamping device 013 is mainly used to clamp and drive the steel casing structure 21 of the second mechanism 2. Specifically, the drilling rig body 01 is connected to the first mechanism 1, and the first mechanism 1 mainly includes a drill rod 11 for drilling and sampling. The drill rod 11 can be driven by the oil cylinder, and the drilling rod 11 is used to drill and sample within the scope of the new foundation construction to determine the specific location and buried depth of the underground old segment b. The oil cylinder can use the existing piston hydraulic oil cylinder. When the drill rod 11 determines the underground old pipe segment b, the drill rod 11 is placed inside the steel casing structure 21. The steel casing structure 21 is located above the old pipe segment b and is ready for drilling. To be precise, a cutting structure 211 is provided at the bottom of the steel casing structure 21, which is ready to use the cutting structure 211 to drill into the ground at any time.

[0033] Please refer to Figure 2 As shown, the drilling rig body 01 holds and drives the steel casing structure 21 of the second mechanism 2 through the holding device 013. The cutting part 2112 provided in the steel casing structure 21 includes a fixed plate 21121 and a gear 21122. One end of the fixed plate 21121 is fixedly connected to the conversion plate 2111, and the other end is connected to the gear 21122. The end of the fixed plate 21121 connected to the gear 21122 can be set to a semicircular shape, and the gear 21122 can be set along the semicircular track of the fixed plate 21121. The third mechanism 3 for crushing and removing old pipe segments and soil is provided in the steel casing structure 21. The third mechanism 3 includes a drill bit 31 and a grabbing structure 32, wherein the grabbing structure 32 is provided with a grabbing structure 321, the upper end of the drill bit 31 is provided with a thread and is driven and connected by the oil cylinder in the drilling rig body 01, and the lower end of the drill bit 31 is fixedly connected to the grabbing structure 32, the grabbing structure 32 is a bucket-shaped structure, in which a wedge hammer 33 is provided, and the grabbing structure 32 is arranged around the edge of the bottom opening.

[0034] Specifically, during construction, the steel casing structure 21 is used to cut the obstacles on the upper part of the old pipe segment b according to the sampling hole determined by the drill rod 11. The drilling rig body 01 is sleeved with the steel casing structure 21 within the scope of the new foundation construction, and is checked and driven to drill. When the drill rod 11 is connected to a high-pressure water gun and drills into the upper part of the old pipe segment b, the soil around the old pipe segment b in the steel casing structure 21 is dispersed by high-pressure water to reduce the friction between the steel casing structure 21 and the soil. The clamping device 013 clamps and drives the steel casing structure 21 to make it move up and down, rotate forward and reverse, and generate downward pressure and torque. The cutting part 2112 provided on the steel casing structure 21 cuts obstacles such as soil, rock layer and reinforced concrete through the gear 21122. After the obstacles are cut, the steel casing structure 21 drills into the sampling hole determined by the drill rod 11 at a 360° angle and passes through the old pipe segment b. By cutting away the obstacle layer first through the steel casing structure 21, the loss of the internal drill rod 11, the drill bit 31 and the impact grab structure 32 can be effectively avoided, while ensuring the verticality of the drill rod 11 and thus the verticality of the pile body.

[0035] Please refer to Figure 3 to Figure 4 As shown, the balance bar 5 provided at the lower part of the steel casing structure 21 is used to flexibly connect the cutting structure 211, and the conversion plates 2111 of the cutting structure 211 are flexibly connected to each other with the balance bar 5 as the conversion fulcrum. Specifically, both sides of the conversion plate 2111 of the cutting structure 211 are flexibly connected to the balance bar 5. The upper end of the conversion mechanism 4 is connected by the motor drive, and the lower end is connected to the cutting structure 211, or the conversion plate 2111. The conversion plate 2111 is driven by the conversion mechanism 4, so that the conversion plate 2111 can be rotated and adjusted to replace the appropriate cutting part 2112 to cut obstacles. The cutting part 2112 can be symmetrically fixedly connected to the two ends of the conversion plate 2111. The two ends of the conversion plate 2111 are also connected to the conversion mechanisms 4 that move in different directions, or the conversion mechanisms 4 connecting the two ends of the conversion plate 2111 are not the same, and the transmission directions are opposite, so as to adjust the direction of the conversion plate 2111.

[0036] refer to Figure 4As shown, the conversion mechanism 4 includes a first transmission member 41 and a second transmission member 42, the first transmission member 41 and the second transmission member 42 are in a vertical connection relationship, one end of the second transmission member 42 is vertically connected to the first transmission member 41, and the other end is connected to the conversion plate 2111, and the two ends of the conversion plate 2111 are respectively connected to the second transmission members 42 of different transmission directions. The two ends of the conversion plate 2111 are connected to the second transmission members 42 that move in opposite directions, and the conversion plate 2111 uses the balance plate 5 as a fulcrum and is pulled by the second transmission member 42 that moves in opposite directions to rotate, and the rotation angle of the conversion plate 2111 is 0 to 180 degrees, so that the cutting parts 2112 connected to different ends of the conversion plate 2111 are mutually reversed.

[0037] When the steel casing structure 21 drills into the old pipe segment b, the drill rod 11 is used to completely remove the soil layer in the steel casing structure 21. Then the steel casing structure 21 grinds through the old pipe segment b in sections. The drill bit 31 and the wedge hammer 33 provided in the impact and grasping structure 32 continuously impact the old pipe segment b to break it. Then the broken old pipe segment b is excavated by the impact and grasping structure 32. When the impact and grasping structure 32 is used for cleaning, it is necessary to ensure the cleanliness of the loose soil and the old pipe segment b at the bottom of the pile hole. Driven by the clamping device 013, the steel casing structure 21 generates downward pressure and torque. The steel casing structure 21 rotates and drills into the ground and completely covers the pile body for cutting operations. The friction between the inner wall of the steel casing structure 21 and the pile body is used to twist the pile body off. The broken pile body is taken out using the said impact and grab structure 32, and the operation is continued in sequence until the whole pile body is removed, or the said wedge hammer 33 is used to hammer along the inner wall of the said steel casing structure 21, so that the hammer head of the said wedge hammer 33 is embedded in the pile body and the said steel casing structure 21, and the said steel casing structure 21 is rotated to twist the pile body off, and the broken pile body is bundled and taken out using a crane, and the operation is continued in sequence until the whole pile body is removed. Then the soil is backfilled into the pile hole, and the backfilled soil is compacted to the designed elevation during the backfilling process. Specifically, the said impact and grab structure 32 and the drill bit 31 can be used to compact the backfilled soil, and for soft strata, rotary grouting can also be used for reinforcement, and obstacles within the construction range are removed at intervals to ensure verticality.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction equipment for removing underground shield segments using a full-rotation drilling rig, including a drilling rig body, characterized in that: The drilling rig body is connected to a second mechanism, the second mechanism includes a steel casing structure, the drilling rig body drives the steel casing structure to generate downward pressure and torque, the steel casing structure is movably connected to a cutting structure through a balance rod, and the cutting structure is driven by a conversion mechanism to movably convert positions relative to the steel casing structure; The cutting structure comprises a conversion plate and a cutting part which are fixedly connected to each other, the conversion plate is movably connected to each other with the balance bar as the conversion fulcrum, and the conversion mechanism is drivingly connected to the conversion plate; The cutting part is symmetrically fixedly connected to the two ends of the conversion plate, the middle part of the conversion plate is movably connected to the balance bar, and the two ends of the conversion plate are also respectively connected to conversion mechanisms that move in different directions; The conversion mechanism comprises a first transmission member and a second transmission member, wherein the first transmission member and the second transmission member are in a vertical connection relationship, one end of the second transmission member is vertically connected to the first transmission member, and the other end is connected to the conversion plate, and the two ends of the conversion plate are respectively connected to the second transmission members with different action directions; The two ends of the conversion plate are connected to the second transmission member moving in opposite directions. The conversion plate uses the balance bar as a fulcrum and is pulled by the second transmission member moving in opposite directions to rotate. The rotation angle of the conversion plate is 0-180°. The cutting parts connected to different ends of the conversion plate are mutually reversed. The cutting part includes a fixed plate and a gear, one end of the fixed plate is fixedly connected to the conversion plate, and the other end is connected to the gear, the fixed plate is connected to the gear and is set in a semicircular shape, and the gear is set along its semicircular track; The drilling rig body comprises a guide column, a clamping device, a base and a driving device, and the driving device comprises a piston hydraulic cylinder.

2. The construction equipment for removing underground shield segments by a full-rotation drilling rig as claimed in claim 1, characterized in that: It also includes a first mechanism, which includes a drill rod, the upper end of which is driven and connected by an oil cylinder in the drilling rig body, and the lower end of which is placed in the steel casing structure.

3. The construction equipment for removing underground shield segments by a fully rotary drilling rig as claimed in claim 2, characterized in that: It also includes a third mechanism, the third mechanism includes a drill bit and a punching and grabbing structure, the punching and grabbing structure is provided with a grabbing structure, the upper end of the drill bit is provided with a thread and is driven and connected by the oil cylinder in the drilling rig body, the lower end of the drill bit is fixedly connected to the punching and grabbing structure and is placed in the steel casing structure; The punching and grabbing structure is a bucket-shaped structure, in which a wedge-shaped hammer is arranged, and the grabbing structure is arranged around the edge of the bottom opening.

4. The construction equipment for removing underground shield segments by a fully rotary drilling rig as claimed in claim 3, characterized in that: The clamping device clamps and connects the steel casing structure, and drives it to move up and down, rotate forward and reverse, so that the steel casing structure generates downward pressure and torque; The upper end of the conversion mechanism built into the steel casing structure is driven and connected by a motor, and the lower end is connected to the cutting structure.

5. The construction equipment for removing underground shield segments by a fully rotary drilling rig as claimed in claim 4, characterized in that: Both sides of the conversion plate of the cutting structure are movably connected to the balance rod.

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