Top drive drilling apparatus

Abstract

The top drive drilling device relates to the field of oil drilling, and comprises a drilling platform, a derrick installed on the drilling platform, a traveling block matched with the derrick, and a top drive system movably installed on the derrick in the vertical direction, wherein the top drive system is further matched with an adjusting assembly and a elevator assembly. The present application completely replaces the existing hydraulic elevator, and does not need a separate hydraulic system for control, so that the overall weight of the equipment is reduced. In addition, when the drill pipe needs to be connected, the adjusting assembly can quickly adjust the position of the elevator assembly, the driving plate arranged in the shape of an eight character automatically checks the drill pipe, and two bushings are opened in linkage. When the drill pipe is completely located in the bushing, the drill pipe can be locked through the double action of the locking disc and the pre-tightening spring, so that the work of the elevator assembly is more stable. In addition, the inside of the bushing is gradually expanded from bottom to top, so that the whole drill pipe can be prevented from falling during the connection or tripping process. Finally, the roller can avoid abrasion during the process of entering and exiting the drill pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oil exploitation, in particular to a top drive drilling device. BACKGROUND

[0002] The top drive system in oil exploitation is referred to as "top drive", which is a major innovation in modern drilling technology. Since its appearance in the 1980s, it has greatly improved the drilling efficiency, safety and automation level. The top drive is a drilling device installed on the top of the derrick and below the traveling block. It integrates the functions of rotary drive, circulating drilling fluid, and making and breaking the connection. It can directly drive the drill pipe to rotate and move up and down along the guide rail, replacing the traditional rotary table type through the kelly drive.

[0003] The existing top drive installation and driving methods are generally divided into electric drive top drive and hydraulic drive top drive, and their power sources are AC variable frequency motor and hydraulic motor respectively. The electric drive top drive has high precision, adjustable range of speed and torque, and is used for land drilling rigs, offshore platforms and automated drilling systems. The hydraulic drive top drive has low power requirement and is suitable for small or mobile drilling rigs. Generally, it includes six parts: drilling motor, which provides rotary power (usually AC variable frequency motor or hydraulic motor); gear box, which reduces speed and increases torque; main shaft and swivel, which convey drilling fluid; guide rail and guide block, which move up and down along the guide rail of the derrick; elevator mechanism, which is used to pick up and pull out the drill pipe; and control system. The existing elevator is equipped on the top drive, such as the manual locking elevator which has been eliminated, and the commonly used hydraulic drive elevator. The hydraulic elevator needs to set up a separate hydraulic system, which increases the pipeline line and makes the layout more complicated, increases the overall weight of the top drive, and the hydraulic system itself has unstable factors, which leads to unstable work of the elevator. Secondly, in the process of pulling out and picking up the drill pipe, it will cause the drill pipe to wear. SUMMARY

[0004] In order to solve the above problems, the technical scheme adopted by the present application is as follows.

[0005] The top drive drilling device comprises a drilling platform, a derrick installed on the drilling platform, a traveling block matched with the derrick, and a top drive system movably installed on the derrick in the vertical direction and connected with the traveling block through a lifting rope. The top drive system is further provided with an adjusting assembly, a lifting clamp assembly and a main controller, and the adjusting assembly is further connected with the lifting clamp assembly. The lifting clamp assembly comprises two connecting arms, the top ends of the two connecting arms are respectively rotatably connected with the two sides of the top drive system, and the other end of each connecting arm is further movably connected with one side of a lifting clamp body. The lifting clamp body is further provided with a cylindrical through portion at the upper and lower ends thereof, and the lifting clamp body further has an opening portion which is in communication with the through portion. A symmetric bushing is vertically arranged in the through portion, and a linkage plate is fixedly arranged on each bushing. First sliding grooves are further formed at the two sides of the front end of the lifting clamp body, and a driving plate is slidably installed in each first sliding groove. The two driving plates are arranged in an eight-shaped manner. A T-shaped sliding groove is further formed at the bottom of the first sliding groove, and the T-shaped sliding groove is in communication with the through portion. A sliding block is arranged in the first sliding groove, and the sliding block is fixedly connected with the linkage plate.

[0006] Preferably, the top drive system comprises a guide connecting plate which is matched with the derrick. A gear box is fixedly arranged at the front end of the guide connecting plate. Two alternating current motors are arranged at the top of the gear box, and the output ends of the two alternating current motors extend into the gear box. A protection sleeve group is arranged at the bottom of the gear box. The protection sleeve group is further provided with the adjusting assembly. A main shaft is rotatably arranged in the protection sleeve group, and the top of the main shaft penetrates through the gear box and is movably arranged in the gear box. The top of the main shaft is further rotatably connected with a faucet assembly. The faucet assembly is arranged at the upper portion of the gear box and is fixedly connected with a lifting ring. The lifting ring is fixedly arranged at the top of the gear box. The main controller is further arranged on the gear box and is signal connected with the two alternating current motors, the adjusting assembly and the lifting clamp assembly. The bottom of the main shaft is further provided with a connecting assembly.

[0007] Preferably, an ear seat is further fixedly arranged on the protection sleeve group. The adjusting assembly is movably arranged on the ear seat. The adjusting assembly comprises a turning plate. The two sides of the turning plate are movably connected with connecting rods through fixing columns. Each connecting rod is movably connected with a corresponding locking seat. Each locking seat is fixedly arranged on the connecting arm. A driving cylinder is further movably arranged on the protection sleeve group. The telescopic end of the driving cylinder is movably connected with the bottom of the turning plate.

[0008] Preferably, a pre-tightening spring is further arranged in each first sliding groove, one end of the pre-tightening spring is fixedly connected with a sliding block, the sliding block is further fixedly connected with a driving plate, the other end of the pre-tightening spring is further fixedly connected with a pressure detector, the pressure detector is fixedly arranged at the distal end of the first sliding groove, and the pressure detector is further signal-connected with a main controller.

[0009] Preferably, a plurality of rollers are further arranged in an array on the inner side end face of each driving plate, and each roller is arranged in a vertical direction.

[0010] Preferably, an arc-shaped placing groove is further arranged on each side of the through portion of the elevator body, and each arc-shaped placing groove is arranged opposite to each bushing, and the inside of each bushing is gradually expanded from bottom to top.

[0011] Preferably, a locking motor is further fixedly arranged at the rear end of the elevator body, the output end of the locking motor extends into the second sliding groove, and the output end of the locking motor is fixedly connected with a locking disc, and the locking motor is further signal-connected with the main controller.

[0012] Preferably, a baffle is further fixedly arranged on each side of the elevator body, and the baffles are located on the two end faces of the second sliding groove.

[0013] Preferably, a limiting groove is further arranged on the upper and lower end faces of the inside of the second sliding groove, and the upper and lower end portions of the first sliding plate and the second sliding plate are located in the limiting groove.

[0014] Preferably, the end portion of the first sliding plate close to the second sliding plate has a protruding portion, the end portion of the second sliding plate close to the protruding portion has a recessed portion, and the protruding portion and the recessed portion are matched with each other.

[0015] The present application has the following beneficial effects:

[0016] The present application completely replaces the existing hydraulic elevator, does not need a separate hydraulic system to control the elevator, reduces the overall weight of the equipment, and further has the following advantages: when the drill rod needs to be connected, the position of the elevator assembly is adjusted through the adjusting assembly, the driving plate arranged in the shape of an eight character automatically contacts the drill rod, and the two bushings are opened in linkage, the drill rod is locked through the double action of the locking disc and the pre-tightening spring when the drill rod is completely located in the bushing, the elevator assembly works more stably, the inside of the bushing is gradually expanded from bottom to top, the drill rod is prevented from falling down as a whole during the process of transferring or connecting the drill rod, and personnel injury is prevented, and the drill rod is prevented from being abraded during the process of entering and exiting the drill rod through the rollers. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic view of the installation structure of a top drive drilling device;

[0018] Figure 2 FIG. 2 is a schematic view of the side view of the installation structure of the top drive drilling device.

[0019] Figure 3 is a three-dimensional structural schematic diagram of a top drive system;

[0020] Figure 4 is a side structural schematic diagram of a top drive system;

[0021] Figure 5 is a three-dimensional structural schematic diagram of a hanging block assembly;

[0022] Figure 6 is another perspective structural schematic diagram of a hanging block assembly;

[0023] Figure 7 is a front structural schematic diagram of a hanging block assembly;

[0024] Figure 8 is a Figure 7 is a sectional structural schematic diagram along line A-A;

[0025] Figure 9 is a Figure 8 is a sectional structural schematic diagram along line B-B;

[0026] Figure 10 is a top structural schematic diagram of a hanging block assembly;

[0027] Figure 11 is a Figure 10 is a sectional structural schematic diagram along line C-C;

[0028] In the figure: drilling platform 1, derrick 2, traveling block 3, top drive system 4, adjusting assembly 5, hanging block assembly 6, main controller 7, connecting arm 60, hanging block body 61, through portion 62, opening portion 63, bushing 64, linkage plate 65, first sliding groove 66, driving plate 67, T-shaped sliding groove 68, sliding block 69, second sliding groove 690, first sliding plate 691, second sliding plate 692, linkage rod 693, locking disc 694, special-shaped guide groove 695, guide connecting plate 40, gear box 41, alternating current motor 42, protective sleeve set 43, main shaft 44, faucet assembly 45, lifting ring 46, connecting assembly 47, ear seat 48, turning plate 50, connecting rod 51, locking seat 52, driving electric cylinder 53, pre-tightening spring 696, pressure detector 697, roller 698, placement groove 699, locking motor 670, baffle 671, limiting groove 672, protruding portion 673, and recessed portion 674. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions, and advantages of the present application clearer, further detailed descriptions will be made to the present application in combination with the accompanying drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0030] In the description of the application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "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 application and simplifying the description, and do not indicate or imply 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 application. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0031] Embodiment one:

[0032] Please refer to Figures 1-11The top drive drilling device comprises a drilling platform 1, which is mainly used for supporting a derrick 2, and is generally a columnar or other mobile platform, including but not limited to land and offshore drilling platforms 1, and is generally further provided with an area for placing a drill rod, which is generally vertically placed in the area, and the derrick 2 is installed on the drilling platform 1, and the derrick 2 is mainly used for matching a traveling block 3 and a top drive system 4, which is hoisted or lowered by a sling or a lifting rope under the action of the traveling block 3, the derrick 2 is matched with the traveling block 3, the top drive system 4 is movably installed on the derrick 2 in the vertical direction, the top drive system 4 is connected with the traveling block 3 through a lifting rope, the top drive system 4 is further matched with an adjusting assembly 5, a lifting clamp assembly 6 and a main controller 7, the adjusting assembly 5 is mainly used for adjusting the position of the lifting clamp assembly 6, and generally works in the process of lifting or taking a drill rod, the bottom of the lifting clamp assembly 6 is in contact with the drilling platform in the process of drilling, and the top drive system 4 drives the drill rod to drill, the adjusting assembly 5 is further connected with the lifting clamp assembly 6, the adjusting assembly 5 is used for adjusting the position of the lifting clamp assembly 6, and the lifting clamp assembly 6 is used for taking the drill rod from the placing area and placing the drill rod in a borehole or lifting the drill rod separated from the top drive system 4 in the process of lifting the drill rod, the lifting clamp assembly 6 comprises two connecting arms 60, the top ends of the two connecting arms 60 are rotatably connected with the two sides of the top drive system 4, and the other end of each connecting arm 60 is further movably connected with one side of a lifting clamp body 61, the two connecting arms 60 can move the lifting clamp body 61, the movement and adjustment of the connecting arms 60 are controlled through the adjusting assembly 5, the lifting clamp body 61 is further provided with a cylindrical through portion 62 at the upper and lower ends, the lifting clamp body 61 further has an opening portion 63, the opening portion 63 is in communication with the through portion 62, so that the drill rod can enter the through portion 62 through the opening portion 63, the entering direction of the drill rod is a horizontal direction instead of a traditional vertical direction, so that alignment is no longer needed, and the wear of the top of the drill rod can be avoided, compared with a traditional lifting clamp without an opening, the opening can more quickly assemble the drill rod, two symmetrical bushings 64 are vertically matched in the through portion 62, the distance between the two bushings 64 can be adjusted at any time, and different diameters of drill rods can be adapted, a linkage plate 65 is fixedly arranged on each bushing 64, the linkage plate 65 can drive the bushing 64 to move into a placing groove 699 on the two sides in the process that the linkage plate 65 is forcedly extruded and moved by a driving plate 67, first sliding grooves 66 are further formed at the front ends of the lifting clamp body 61 on the two sides, the two first sliding grooves 66 are located on the two sides of the opening portion 63, and the driving plate 67 is slidably installed in each first sliding groove 66, so that the two driving plates 67 are arranged in an eight-shaped mode, a T-shaped sliding groove 68 is further formed at the bottom of the first sliding groove 66, the T-shaped sliding groove 68 is further in communication with the through portion 62, a sliding block 69 is matched in the first sliding groove 66, the bottom part of the sliding block 69 is located in the T-shaped sliding groove 68, and the sliding block 69 is further fixedly connected with the linkage plate 65.The second sliding groove 690 is also provided through the inside of the lifting tool body 61, and the second sliding groove 690 also communicates with the through portion 62, and the first sliding plate 691 and the second sliding plate 692 are also slidably arranged in the second sliding groove 690, and the first sliding plate 691 and the second sliding plate 692 are fixedly connected with the corresponding bushings 64, and the ends, away from the bushings 64, of the first sliding plate 691 and the second sliding plate 692 are fixedly provided with linkage rods 693, and the second sliding groove 690 is also movably provided with a locking disc 694, and the locking disc 694 is symmetrically provided with a special-shaped guide groove 695, each linkage rod 693 extends into the corresponding special-shaped guide groove 695, and in the process of rotating, the special-shaped guide groove 695 can make the linkage rod 693 drive the first sliding plate 691 and the second sliding plate 692 to slide.

[0033] The working principle is as follows:

[0034] The bottom of the two driving plates 67 is in contact with each other in the initial state, and the two bushings 64 are also in contact with each other at this time, forming a closed locking part. When it is necessary to take the drill rod, first, the main controller 7 controls the adjusting assembly 5 to move the elevator assembly 6 to the specified position, at which time the splayed part of the two driving plates 67 is aligned with the drill rod to be clamped, and then the whole elevator body 61 is pushed forward, at which time the drill rod is in contact with the inside of the splayed part of the two driving plates 67, which will squeeze the driving plates 67 to drive the sliding blocks 69 to move to both ends along the first sliding grooves 66. During this process, the pre-tightening spring 696 will be in a squeezed state. The sliding blocks 69 will drive the linkage plates 65 to move during the movement process, at which time the two bushings 64 will also be gradually opened. During the gradual opening process, the first sliding plate 691 and the second sliding plate 692 will slide in the second sliding groove 690 along the limiting groove 672. During this process, the linkage rod 693 will drive the locking disc 694 to rotate. This driving rotation is equivalent to passive rotation. When the drill rod is separated from the bottom of the two driving plates 67, at this time, the pre-tightening spring 696 will have a sudden change, and at this time, the pressure detector 697 will detect that the pressure value is no longer increasing, but decreasing. At this time, the main controller 7 detects the signal, and the main controller 7 issues a signal to make the locking motor 670 remain stationary for a period of time. At this time, the locking motor 670 will lock the locking disc 694, which is equivalent to locking. When the drill rod is completely located in the two bushings 64, at this time, the main controller 7 starts to start the locking motor 670 to start, so that the locking disc 694 moves reversely. At this time, the locking disc 694 actively rotates, and during the process of active rotation, the linkage rod 693 will drive the first sliding plate 691 and the second sliding plate 692 to approach each other under the action of the special-shaped guide groove 695, which will lock the drill rod during the approaching process. At the same time, the driving plates 67 also start to move reversely until the two driving plates 67 are in contact with each other. At this time, the driving plates 67 serve as a secondary protection function. Under the double action of the pre-tightening spring 696 and the locking disc 694, the locking efficiency can be guaranteed, and the drill rod will not shake inside. It can adapt to different diameters of drill rods for operation, and avoids the wear of the drill rod.

[0035] Referring to Figures 8-9 The special-shaped guide groove 695 on the locking disc 694 is in an arc shape, and the two special-shaped guide grooves 695 are in contact with the ends of the corresponding two linkage rods 693, which is equivalent to the outer surface of each linkage rod 693 being in contact with the inner wall of the special-shaped guide groove 695. The arc-shaped special-shaped guide groove 695 has a limiting and guiding effect, which is as follows:

[0036] When the linkage plate 65 moves to both sides under the action of the drill rod, at this time, the two bushings 64 will also be gradually opened, at which time the first sliding plate 691 and the second sliding plate 692 corresponding to each bushing 64 will slide in the second sliding groove 690 along the limiting groove 672. During this process, as Figure 9As shown, each linkage rod 693 will break away from the arc-shaped structure of the special-shaped guide groove 695, so that the locking disc 694 is passively rotated (clockwise rotation), and in the process of expansion of the bushing 64, the two linkage rods 693 start to move away from each other from the closest position, and the two linkage rods 693 always move horizontally during the process of moving away from each other, and the horizontal passive sliding process makes the locking disc 694 rotate.

[0037] In the process of locking, the locking disc 694 will be actively rotated (counterclockwise rotation) under the action of the locking motor 670, so that the two linkage rods 693 located at the farthest end of the special-shaped guide groove 695 are close to each other during rotation, and at this time the two corresponding bushings 64 are also close to each other, thereby locking the drill rod.

[0038] Referring to Figures 3-4 , the top drive system 4 comprises a guide connecting plate 40 which cooperates with the derrick 2, a gear box 41 is fixedly arranged at the front end of the guide connecting plate 40, two alternating current motors 42 are arranged at the top of the gear box 41, the output ends of each alternating current motor 42 extend into the gear box 41, a speed reduction gear set is arranged in the gear box 41, which can synchronously transmit the output of the two alternating current motors 42 to the speed reduction gear set, the speed reduction gear set is also engaged with a main shaft 44, the main shaft 44 is a hollow shaft, so that the speed reduction gear set drives the main shaft 44 to rotate, a protection sleeve set 43 is arranged at the bottom of the gear box 41, an adjusting assembly 5 is further arranged on the protection sleeve set 43, the main shaft 44 is rotatably arranged in the protection sleeve set 43, the protection sleeve set 43 protects the main shaft 44, so that the main shaft 44 is not affected by the external environment, and the top of the main shaft 44 penetrates through the gear box 41 and is installed in cooperation with the gear inside the gear box 41, the top of the main shaft 44 is further rotatably connected with a water faucet assembly 45, the water faucet assembly 45 can deliver drilling fluid to the main shaft 44, the water faucet assembly 45 is located on the upper part of the gear box 41 and is fixedly connected with a lifting ring 46, the water faucet assembly 45 is used for supplying circulating fluid to the main shaft 44 and can rotate with the main shaft 44; the lifting ring 46 is fixed on the top of the gear box 41, a main controller 7 is also arranged on the gear box 41, the lifting ring 46 is connected with a rope, the top drive is lifted through the lifting ring 46, and the main controller 7 is signal connected with the two alternating current motors 42, the adjusting assembly 5 and a lifting clamp assembly 6, respectively, a connecting assembly 47 is further arranged at the bottom of the main shaft 44, and the connecting assembly 47 is used for connecting the main shaft 44 with a drill rod, so as to transmit the rotation torque to the drill rod.

[0039] The protective sleeve group 43 is also fixedly installed with an ear seat 48, the ear seat 48 is movably installed with an adjusting assembly 5, the adjusting assembly 5 comprises a flap 50, the flap 50 is also movably connected with the ear seat 48, so that the flap 50 can be turned around the ear seat 48 under the action of the driving electric cylinder 53, the turning of the flap 50 will make the connecting rod 51 drive the connecting arm 60 to move, so as to realize the position adjustment of the whole lifting clamp assembly 6, the two sides of the flap 50 are also movably connected with the connecting rod 51 through the fixed column, each connecting rod 51 is also movably connected with the corresponding locking seat 52, each locking seat 52 is fixedly installed on the connecting arm 60, the protective sleeve group 43 is also movably provided with the driving electric cylinder 53, the telescopic end of the driving electric cylinder 53 is also movably connected with the bottom of the flap 50.

[0040] Referring to Figures 5-11 Each first sliding groove 66 is also provided with a pre-tightening spring 696, one end of the pre-tightening spring 696 is fixedly connected with the sliding block 69, the sliding block 69 is also fixedly connected with the driving plate 67, the other end of the pre-tightening spring 696 is also fixedly connected with the pressure detector 697, the pressure detector 697 is fixedly arranged at the far end of the first sliding groove 66, the pressure detector 697 is also signal-connected with the main controller 7, the pre-tightening spring 696 and the locking disc 694 cooperate with each other, the main function of the pressure detector 697 is to provide a feedback signal, when the drill rod is separated from the two driving plates 67, at this time, the pre-tightening spring 696 will have a mutation, at this time, the pressure detector 697 will detect that the pressure value is no longer increased, but decreased, at this time, the main controller 7 detects the signal fed back by the pressure detector 697, then the main controller 7 issues a command to make the locking motor 670 keep still for a period of time, generally 5-10 min, until the drill rod is completely located in the bushing 64.

[0041] Referring to Figure 6 The inner side surface of each driving plate 67 is also arrayed with a plurality of rollers 698, each roller 698 is arranged in the vertical direction, so that in the process of the drill rod pressing the driving plate 67, the roller 698 can rotate, so as to reduce the wear of the drill rod.

[0042] Referring to Figure 6 Or Figure 8The through portion 62 of the elevator body 61 is further provided with arc-shaped placing grooves 699 on both sides, which can be used for placing the bushings 64. When the two bushings 64 are located in the placing grooves 699, the two linkage rods 693 are located at the outermost ends of the two corresponding special-shaped guide grooves 695, and cannot be moved further to be separated. This position is the maximum position at which the two bushings 64 can be separated, and is arranged opposite to each bushing 64. The inside of each bushing 64 is gradually expanded from bottom to top. Generally, the diameter of the drill rod at the head is larger than the diameter of the drill rod. When the bushing 64 cannot be locked, the gradual expansion from bottom to top can prevent the drill rod from falling as a whole during the process of transferring or picking up the drill rod, thereby causing personal injury.

[0043] The rear end of the elevator body 61 is further fixedly provided with a locking motor 670. The output end of the locking motor 670 extends into the second sliding groove 690 and is fixedly connected with the locking disc 694. The locking motor 670 is further signal-connected with the main controller 7. During the process of picking up the drill rod, when the drill rod is completely located in the two bushings 64, the main controller 7 starts to start the locking motor 670, so that the locking disc 694 moves reversely. At this time, the locking disc 694 actively rotates. During the process of active rotation, the linkage rod 693 drives the first sliding plate 691 and the second sliding plate 692 to move close to each other under the action of the special-shaped guide groove 695. During the process of moving close to each other, the drill rod is locked, and the driving plates 67 also reversely start to move until the two driving plates 67 contact each other.

[0044] Referring to Figure 4 The two sides of the elevator body 61 are further respectively fixedly provided with baffle plates 671, which are located at the two end faces of the second sliding groove 690. The baffle plates 671 are used for shielding the two ends of the second sliding groove 690, so that the second sliding groove 690 remains clean. When maintenance is needed, the baffle plates 671 can be removed to check the components in the second sliding groove 690.

[0045] Referring to Figure 8 The inside of the second sliding groove 690 is further provided with limiting grooves 672 at the upper and lower end faces. The upper and lower ends of the first sliding plate 691 and the second sliding plate 692 are located in the limiting grooves 682. The purpose of providing the limiting grooves 672 is to ensure that the first sliding plate 691 and the second sliding plate 692 cannot shake during movement. Shaking will cause the linkage rod 693 to be separated from the special-shaped guide groove 695, which will cause the equipment to lose the locking effect.

[0046] Referring to Figure 6The first sliding plate 691 has a protruding part 673 near the end of the second sliding plate 692, the second sliding plate 692 has a recessed part 674 near the end of the protruding part 673, the protruding part 673 and the recessed part 674 cooperate with each other, when the two bushings 64 are tightly attached, the protruding part 673 and the recessed part 674 are completely attached, at this time, the two linkage rods 693 are located in the inner end of the two special-shaped guide grooves 695, Figure 9 The schematic diagram of the linkage rod 693 located in the middle of the special-shaped guide groove 695 is shown in the above process, the above-mentioned process of designing the cooperating protruding part 673 and the recessed part 674 can ensure the tight attachment of the two bushings 64, and can ensure the adjustment range to a certain extent, that is, the range of the movement of the two linkage rods 693 to the two sides is increased, so that the elevator assembly 6 can adapt to more diameter range of the drill rod, and the adaptability is high.

[0047] The above is only the preferred embodiment of the present application, and does not limit the present application in other forms, any skilled person in the art can change or modify the above-mentioned disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above-mentioned embodiments without departing from the technical solution content of the present application, according to the technical essence of the present application, still belongs to the protection scope of the technical solution of the present application.

Claims

1. A top-drive drilling apparatus, comprising a drilling platform (1), a derrick (2) mounted on the drilling platform (1), a traveling block (3) mounted on the derrick (2), and a top drive system (4) movably mounted vertically on the derrick (2), the top drive system (4) being connected to the traveling block (3) via a suspension rope, characterized in that: The top drive system (4) is also provided with an adjusting assembly (5), a hanging tool assembly (6) and a main controller (7), and the adjusting assembly (5) is also connected with the hanging tool assembly (6), the hanging tool assembly (6) comprises two connecting arms (60), the top ends of the two connecting arms (60) are rotatably connected with the two sides of the top drive system (4), and the other end of each connecting arm (60) is movably connected with one side of a hanging tool body (61), the hanging tool body (61) is also provided with a cylindrical through portion (62) at the upper and lower ends, the hanging tool body (61) is also provided with an opening portion (63), the opening portion (63) is communicated with the through portion (62), the through portion (62) is provided with two symmetrical bushings (64), each bushing (64) is also provided with a linkage plate (65), the front ends of the two sides of the hanging tool body (61) are also provided with a first sliding groove (66), each first sliding groove (66) is slidably provided with a driving plate (67), and the two driving plates (67) are arranged in an eight-shaped manner, the bottom of the first sliding groove (66) is also provided with a T-shaped sliding groove (68), the T-shaped sliding groove (68) is also communicated with the through portion (62), the first sliding groove (66) is provided with a sliding block (69), the bottom part of the sliding block (69) is located in the T-shaped sliding groove (68), and the sliding block (69) is also fixedly connected with the linkage plate (65); the inside of the hanging tool body (61) is also provided with a second sliding groove (690) penetrating from left to right, the second sliding groove (690) is also communicated with the through portion (62), and the second sliding groove (690) is also slidably provided with a first sliding plate (691) and a second sliding plate (692), and the first sliding plate (691) and the second sliding plate (692) are both fixedly connected with the corresponding bushing (64), and the end, away from the bushing (64), of the first sliding plate (691) and the second sliding plate (692) is also fixedly provided with a linkage rod (693), the second sliding groove (690) is also movably provided with a locking disc (694), the locking disc (694) is symmetrically provided with a special-shaped guide groove (695), each linkage rod (693) extends into the corresponding special-shaped guide groove (695), and the special-shaped guide groove (695) is an arc-shaped structure.

2. A top drive drilling apparatus as claimed in claim 1, wherein: The top drive system (4) comprises a guide connecting plate (40) which cooperates with the derrick (2), a gear box (41) is fixedly arranged at the front end of the guide connecting plate (40), two alternating current motors (42) are arranged at the top of the gear box (41), the output end of each alternating current motor (42) extends into the gear box (41), a protective sleeve group (43) is arranged at the bottom of the gear box (41), an adjusting assembly (5) is further arranged on the protective sleeve group (43), a main shaft (44) is rotatably arranged in the protective sleeve group (43), the top of the main shaft (44) penetrates through the gear box (41) and is rotatably arranged in the gear box (41), a water faucet assembly (45) is rotatably arranged at the top of the main shaft (44), the water faucet assembly (45) is arranged at the upper portion of the gear box (41) and is fixedly connected with a lifting ring (46), the lifting ring (46) is fixedly arranged at the top of the gear box (41), a main controller (7) is further arranged on the gear box (41), and the main controller (7) is signal connected with the two alternating current motors (42), the adjusting assembly (5) and a lifting clamp assembly (6), respectively, and a connecting assembly (47) is further arranged at the bottom of the main shaft (44).

3. A top drive drilling apparatus as claimed in claim 2, wherein: An ear seat (48) is further fixedly arranged on the protective sleeve group (43), the adjusting assembly (5) is movably arranged on the ear seat (48), the adjusting assembly (5) comprises a turning plate (50), the turning plate (50) is movably connected with the ear seat (48), the turning plate (50) is movably connected with a connecting rod (51) through a fixed column at two sides of the turning plate (50), each connecting rod (51) is movably connected with a corresponding locking seat (52), each locking seat (52) is fixedly arranged on a connecting arm (60), a driving electric cylinder (53) is further movably arranged on the protective sleeve group (43), and the telescopic end of the driving electric cylinder (53) is movably connected with the bottom of the turning plate (50).

4. The top drive drilling apparatus of claim 1, wherein: A pre-tightening spring (696) is further arranged in each first sliding groove (66), one end of the pre-tightening spring (696) is fixedly connected with a sliding block (69), the sliding block (69) is fixedly connected with the driving plate (67), the other end of the pre-tightening spring (696) is fixedly connected with a pressure detector (697), the pressure detector (697) is fixedly arranged at the distal end of the first sliding groove (66), and the pressure detector (697) is signal connected with the main controller (7).

5. A top drive drilling apparatus as claimed in claim 1 or 4, characterised in that: A plurality of rollers (698) are arrayed on the inner side end face of each driving plate (67), and each roller (698) is arranged in the vertical direction.

6. The top drive drilling apparatus of claim 1, wherein: Arc-shaped placing grooves (699) are further arranged at the two sides of the through portion (62) of the lifting clamp body (61) and are arranged opposite to each bushing (64), and the inside of each bushing (64) is gradually expanded from bottom to top.

7. The top drive drilling apparatus of claim 1, wherein: A locking motor (670) is further fixedly arranged at the rear end of the lifting clamp body (61), the output end of the locking motor (670) extends into the second sliding groove (690) and is fixedly connected with a locking disc (694), and the locking motor (670) is signal connected with the main controller (7).

8. A top drive drilling apparatus as claimed in claim 1 or claim 7, characterised in that: Two sides of the lifting clamp body (61) are respectively fixed with a baffle (671), and the baffle (671) is located at the two end faces of the second sliding groove (690).

9. The top drive drilling apparatus of claim 1, wherein: The upper and lower end faces of the inside of the second sliding groove (690) are further provided with a limiting groove (672), and the upper and lower end portions of the first sliding plate (691) and the second sliding plate (692) are located in the limiting groove (682).

10. A top drive drilling apparatus as claimed in claim 1 or 9, characterised in that: The end portion of the first sliding plate (691) close to the second sliding plate (692) has a protruding portion (673), and the end portion of the second sliding plate (692) close to the protruding portion (673) is provided with a recessed portion (674).

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