A telescopic orbiting frame for ultra-large diameter full-section vertical shaft drilling rig

Abstract

The present invention relates to the technical field of shaft excavation construction equipment, and in particular to a telescopic revolution frame for a super-large diameter full-section shaft drilling rig, comprising an intermediate frame, a revolution beam, a telescopic beam, a connecting beam and a driving box, wherein a plurality of revolution beams arranged radially are evenly spaced along the circumference of the intermediate frame, one end of the revolution beam is detachably connected to the intermediate frame, the other end of the revolution beam is movably connected to one end of the telescopic beam, and a driving box and a cutter disc are correspondingly arranged at the other end of the telescopic beam. Under the action of a driving device, the telescopic beam can drive the driving box and the cutter disc to move forward and backward along the axial direction of the corresponding revolution beam, connecting beams are respectively arranged between adjacent revolution beams, and a driving box and a cutter disc are arranged between the middle part of the connecting beam and the intermediate frame, the excavation hole diameter can be changed by telescoping the telescopic beam, and the synchronous caisson process of prefabricated shaft walls with different wall thicknesses can be adapted, six-point synchronous excavation is supported, and in coordination with the overall revolution, super-large diameter full-section excavation can be realized by using a small cutter disc.

Description

Technical Field

[0001] The invention relates to the technical field of shaft excavation construction equipment, in particular to a telescopic orbiting frame used for an ultra-large diameter full-section shaft drilling rig. Background Art

[0002] In recent years, with the rapid development of the national economy, underground projects such as urban underground space development and urban underground pipeline corridor construction have become increasingly popular, which in turn puts forward higher requirements on construction equipment. In particular, some underground projects require very large excavation diameters, but the largest diameter shaft drilling rig in China currently has an excavation diameter of only 13 meters, and drilling rigs for super-large shafts exceeding 20 meters are very rare in the world. On the one hand, since most underground projects are constructed in densely populated areas in cities with narrow sites, super-large diameter shaft excavation equipment is too large, making it difficult to manufacture, assemble, transport and construct; on the other hand, the shaft has a large diameter, a large amount of excavation work, low efficiency, and a long construction and excavation time, which cannot meet the fast-paced needs of modern construction. At the same time, as the diameter of the shaft increases, the risk of preventing and controlling the settlement of surrounding strata and buildings increases. Summary of the invention

[0003] In order to solve the problems in the background technology, the present invention discloses a telescopic revolving frame for an ultra-large diameter full-section vertical shaft drilling rig. The excavation hole diameter can be adjusted, the modular structure is convenient to install and transport, the excavation efficiency is high, and the full-section excavation of ultra-large diameter vertical shafts of more than 20 meters can be achieved.

[0004] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0005] A telescopic orbiting frame for an ultra-large diameter full-section vertical shaft drilling rig comprises an intermediate frame, an orbiting beam, a telescopic beam, a connecting beam and a driving box. The intermediate frame is vertically arranged, and a plurality of orbiting beams arranged radially are evenly spaced along the circumference of the intermediate frame. One end of the orbiting beam is detachably connected to the intermediate frame, and the other end of the orbiting beam is movably connected to one end of the telescopic beam. A driving box and a cutter disc are correspondingly arranged at the other end of the telescopic beam. Under the action of a driving device, the telescopic beam can drive the driving box and the cutter disc to move forward and backward along the axial direction of the corresponding orbiting beam. Connecting beams are respectively arranged between adjacent orbiting beams, and a driving box and a cutter disc are arranged between the middle part of the connecting beam and the intermediate frame.

[0006] Furthermore, one end of the telescopic beam is embedded in the revolution beam, and a plurality of slideways are arranged at intervals on the inner side surface of the revolution beam. The slideways extend along the axial direction of the revolution beam respectively, and the telescopic beam can slide forward and backward along the slideways under the action of the telescopic oil cylinder.

[0007] Furthermore, a plurality of swing pairs are arranged between the telescopic beam and the orbiting beam, the swing pairs include a seat plate and a swing block, the seat plate is fixedly connected to the telescopic beam, a groove matched with the swing block is provided in the middle of the seat plate, the axial direction of the groove is perpendicular to the telescopic direction of the telescopic beam, the swing block is arranged in the groove, and the two ends of the swing block are rotatably connected to the end plates at both ends of the seat plate through pins respectively, the swing block is a semi-cylindrical structure, the arc surface of the swing block is in contact with the groove, the plane of the swing block opposite to the arc surface is in sliding contact with the inner side surface of the orbiting beam, and a sealing ring is arranged between the edge of the contact surface between the swing block and the seat plate.

[0008] Furthermore, the outer end of the telescopic beam is a variable cross-section structure.

[0009] Furthermore, the intermediate frame and the orbiting beam, the telescopic beam and the driving box, and the connecting beam and the orbiting beam are connected respectively by flanges.

[0010] Furthermore, stoppers are provided on flanges between the telescopic beam and the driving box and between the connecting beam and the orbiting beam.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The frame of the present invention is connected with six drive boxes and cutter discs, supports six-point synchronous excavation, and cooperates with the overall revolution to realize ultra-large diameter full-section excavation using a small cutter disc;

[0013] 2. The frame of the present invention can realize variable excavation hole diameter by telescopic beam extension, and can adapt to the synchronous caisson process of prefabricated well walls with different wall thicknesses;

[0014] 3. In the present invention, the revolution beam and the telescopic beam are connected by a swing pair, which is fixed on the telescopic beam and is in surface contact with the revolution beam. The swing pair can swing adaptively according to the size and direction of the load. The contact surface of the swing block is evenly stressed and can withstand a larger alternating load, thereby ensuring even stress between the telescopic beam and the revolution beam and smooth movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the top view of the structure of the present invention;

[0016] Figure 2 yes Figure 1 Middle AA section view;

[0017] Figure 3 yes Figure 2 Middle BB section view;

[0018] Figure 4 yes Figure 2 A magnified view of the local P in the middle;

[0019] Figure 5It is a schematic diagram of the swing pair structure in the present invention;

[0020] Figure 6 yes Figure 5 Middle CC section view;

[0021] Figure 7 yes Figure 5 Middle DD section view;

[0022] In the above figure: 1-intermediate frame; 2-revolution beam; 3-telescopic cylinder; 4-telescopic beam; 5-connecting beam; 6-driving box; 7-cutter head; 8-swing pair; 9-connecting bolts; 10-seat plate; 11-swing block; 12-sealing ring; 13-pressure plate; 14-pin shaft; 15-end plate; 16-fixing bolts. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Combined with Figure 1-4, the present invention is a telescopic revolution frame for a super-large diameter full-section vertical shaft drilling rig, comprising an intermediate frame 1, a revolution beam 2, a telescopic beam 4, a connecting beam 5 and a driving box 6. The intermediate frame 1 is vertically arranged, and four radially arranged revolution beams 2 are evenly spaced along the circumference of the intermediate frame 1. One end of the revolution beam 2 is connected to the intermediate frame 1 by a connecting bolt, and the other end of the revolution beam 2 is movably connected to one end of the telescopic beam 4. It should be noted here that the telescopic beam 4 and the revolution beam 2 are preferably embedded inside and outside. The telescopic beam 4 and the revolution beam 2 are in the form of a sleeve, and the cross-sections of the telescopic beam 4 and the revolution beam 2 are rectangular structures respectively. One end of the telescopic beam 4 is embedded in the revolution beam 2, and a plurality of slideways are arranged at intervals on the inner side surface of the revolution beam 2, and the slideways extend along the axial direction of the revolution beam 2 respectively. The other end of the telescopic beam 4 is correspondingly provided with a drive box 6 and a cutter head 7. The outer end of the telescopic beam 4 is a variable cross-section structure to adapt to the gradual change of the load from the outside to the inside. One end of the telescopic cylinder 3 is connected to the middle frame 1, and the other end is connected to the telescopic beam 4. The telescopic cylinder 3 is extended and retracted to drive the telescopic beam 4 along The axial movement of the revolution beam 2 is forward and backward. Under the action of the telescopic oil cylinder 3, the telescopic beam 4 can drive the drive box 6 and the cutter disc 7 to move forward and backward along the axial direction of the corresponding revolution beam 2. Connecting beams 5 are respectively arranged between adjacent revolution beams 2. Drive boxes 6 and cutter discs 7 are respectively arranged between the middle of the relatively arranged connecting beams 5 and the intermediate frame 1. The two drive boxes 6 arranged between the connecting beam 5 and the intermediate frame 1 are in the inner circle, and the four drive boxes 6 connected by the four telescopic beams 4 are in the outer circle. The six drive boxes and cutter discs are divided into two groups, inner and outer. They can rotate around the center while rotating. After rotation, full coverage of the entire excavation section is formed. The intermediate frame 1 and the revolution beam 2, the telescopic beam 4 and the drive box 6, and the connecting beam 5 and the revolution beam 2 are respectively connected by flanges. The flanges between the telescopic beam 4 and the drive box 6 and between the connecting beam 5 and the revolution beam 2 are respectively provided with stoppers, and stoppers are provided between the flanges to withstand vertical tangential forces. The telescopic beam 4 is telescopic to realize variable excavation hole diameter, and can adapt to the synchronous caisson process of prefabricated well walls with different wall thicknesses.

[0025] Combined with Figure 5-7, the structure of the swing pair 8 is described in detail. A plurality of swing pairs 8 are arranged between the telescopic beam 4 and the orbiting beam 2. A groove is processed on the telescopic beam 4 for installing the swing pair 8. The groove structure can prevent the fixing bolts of the swing pair 8 from being sheared and damaged when the swing pair 8 slides back and forth. Four through-length slide surfaces are processed along the axial direction on the inner side of the orbiting beam 2, so that the telescopic beam 4 can slide back and forth along the slide; the swing pair 8 is in surface contact with the slide surface of the orbiting beam 2. When the swing pair 8 slides back and forth, sliding friction is formed with the inner side of the orbiting beam 2. The swing pair 8 includes a seat plate 10 and a swing block 11. The seat plate 10 is fixedly connected to the telescopic beam 4. A groove that is matched with the swing block 11 is provided in the middle of the seat plate 10. The axial direction of the groove is perpendicular to the telescopic direction of the telescopic beam 4. The swing block 11 is arranged in the groove. The two ends are rotatably connected to the end plates 15 at both ends of the seat plate 10 through pin shafts 14 respectively to prevent the telescopic beam 4 from getting stuck when moving forward and backward. The swing block 11 is a semi-cylindrical structure. The arc surface of the swing block 11 is in contact with the groove, and the plane of the swing block 11 opposite to the arc surface is in sliding contact with the inner side surface of the revolution beam 2. The swing block 11 and the seat plate 10 are in cylindrical contact. The swing block 11 can swing adaptively according to the force deformation of the telescopic beam 4 and the revolution beam 2, and a larger contact surface is always guaranteed between the swing block 11 and the revolution beam 2, thereby avoiding stress concentration. A sealing ring 12 is arranged between the edge of the contact surface between the swing block 11 and the seat plate 10 to prevent external debris such as mud and sand from entering the sliding surface. The sealing ring 12 is fixed to the seat plate 10 by fixing bolts, and a pressure plate 13 is also sleeved on the head of the fixing bolt.

[0026] The specific working mode of the telescopic revolution frame mechanism for a super-large diameter full-section vertical shaft drilling rig described in the present invention is as follows: when the equipment enters the wellhead, the telescopic beam 4 of the revolution frame retracts with the drive box 6, and smoothly enters the well in the minimum radius state; before excavation, the telescopic beam 4 is extended, the cutter head 7 reaches the specified size, and the equipment is vertically lowered by gravity, while the cutter head rotates + revolves to excavate the vertical shaft; during excavation, the swing pair 8 structure between the telescopic beam 4 and the revolution beam 2 can withstand the huge impact force brought by excavation; while excavating, the prefabricated well wall is synchronously lowered to protect the excavation section from collapse or prevent the surrounding strata from settling. When encountering difficulties in well wall settlement, the telescopic beam can be extended by another 100-200 mm to expand the excavation to facilitate well wall settlement; after the excavation reaches the specified depth, the telescopic beam 4 is retracted, and the mechanism reaches the minimum state, allowing the prefabricated well wall to be passed through and the hole and disassembled and assembled smoothly.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are 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, and therefore cannot be understood as a limitation on the present invention. In the present invention, it should also be noted that the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integrally formed connection, a mechanical connection, or an indirect connection through an intermediate medium, and the specific meaning of the terms in this utility model can be understood according to the specific circumstances.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A telescopic revolution frame for an ultra-large diameter full-section vertical shaft drilling rig, characterized by: It includes an intermediate frame, an orbiting beam, a telescopic beam, a connecting beam and a driving box. The intermediate frame is vertically arranged. A plurality of orbiting beams arranged radially are evenly spaced along the circumference of the intermediate frame. One end of the orbiting beam is detachably connected to the intermediate frame. The other end of the orbiting beam is movably connected to one end of the telescopic beam. A driving box and a cutter disc are correspondingly arranged at the other end of the telescopic beam. One end of the telescopic beam is embedded in the orbiting beam. A plurality of slideways are spaced apart on the inner side surface of the orbiting beam. The slideways extend along the axial direction of the orbiting beam respectively. The telescopic beam can slide forward and backward along the slideway under the action of the telescopic oil cylinder. A plurality of swinging pairs are arranged between the telescopic beam and the orbiting beam. The swinging pairs include a seat plate and a swinging block. The seat plate is fixedly connected to the telescopic beam. A groove that matches the swing block is provided in the middle of the seat plate, and the axial direction of the groove is perpendicular to the telescopic direction of the telescopic beam. The swing block is arranged in the groove, and the two ends of the swing block are rotatably connected to the end plates at both ends of the seat plate through pins. The swing block is a semi-cylindrical structure, and the arc surface of the swing block is in contact with the groove, and the plane of the swing block opposite to the arc surface is in sliding contact with the inner surface of the revolution beam. A sealing ring is provided between the edge of the contact surface between the swing block and the seat plate. Under the action of the driving device, the telescopic beam can drive the driving box and the cutter disc to move forward and backward along the axial direction of the corresponding revolution beam. Connecting beams are respectively provided between adjacent revolution beams, and the driving box and the cutter disc are provided between the middle part of the connecting beam and the intermediate frame.

2. The telescopic revolution frame for an ultra-large diameter full-section vertical shaft drilling rig according to claim 1, characterized in that: The outer end of the telescopic beam is a variable cross-section structure.

3. The telescopic revolution frame for an ultra-large diameter full-section vertical shaft drilling rig according to claim 1 is characterized by: The intermediate frame and the revolution beam, the telescopic beam and the driving box, and the connecting beam and the revolution beam are connected respectively through flanges.

4. The telescopic revolution frame for an ultra-large diameter full-section vertical shaft drilling rig according to claim 1 is characterized by: Flanges between the telescopic beam and the driving box and between the connecting beam and the revolution beam are respectively provided with stoppers.

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