A drilling rig pipe rack lifting mechanism

Abstract

The utility model discloses a kind of drill pipe warehouse lifting mechanisms for drilling machine, it is related to drilling machine equipment technical field.The mechanism includes support guide unit, power transmission unit and fastening protection unit;Through drill pipe warehouse lifting cylinder drive inner portal body along outer guide portal body lifting, in combination with chain transmission drive fork shovel body synchronous movement realizes drill pipe access;Multi-component collaborative realization multidimensional accurate guidance, with rolling friction to replace sliding friction to reduce abrasion, solve the problem that traditional mechanism is poor in guiding, stability is insufficient, abrasion is serious, with the advantages of lifting accurate, stable operation, long service life.

Description

Technical Field

[0001] This utility model relates to the field of drilling equipment technology, specifically to a drill rod magazine lifting mechanism for drilling rigs. Background Technology

[0002] During drilling operations, the drill pipe magazine lifting mechanism is the core component for storing and retrieving drill pipes, and its performance directly affects the efficiency and reliability of drill pipe storage and retrieval. Traditional drill pipe magazine lifting mechanisms have many shortcomings: they are prone to swaying and shaking during lifting, resulting in large deviations in the drill pipe storage and retrieval position, which seriously affects operational efficiency; the load-bearing and transmission structure design is unreasonable, and jamming and shaking are prone to occur during lifting, even causing component damage; the proportion of sliding friction is high and the lateral force buffering is insufficient, resulting in rapid wear and short service life of key mating components such as the gantry and rollers.

[0003] Therefore, developing a drill pipe magazine lifting mechanism that is precise in guidance, stable in operation, and has controllable wear is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] The present invention aims to provide a drill rod magazine lifting mechanism for drilling rigs to solve the defects of poor guidance, insufficient stability and severe wear in the existing technology, and to achieve the technical effects of multi-dimensional precise guidance, smooth and efficient lifting and controllable component wear.

[0005] The drill rod magazine lifting mechanism for drilling rigs of this utility model includes a support and guide unit, a power transmission unit, and a fastening and protection unit. The specific structure and working principle of each unit are as follows:

[0006] 1. Supporting guide unit

[0007] Outer guide gantry: As the outer support frame of the overall mechanism, it provides basic structural strength and installation benchmark for other components.

[0008] Inner gantry body: It slides inside the outer guide gantry body and is the core moving component for load bearing and transmission. It can slide vertically inside the outer guide gantry body.

[0009] Gantry guide plate: Located at the mating surface between the inner gantry and the outer guide gantry, it enhances the guiding accuracy when the two slide relative to each other and effectively avoids swaying.

[0010] Gantry roller bearings: enable rolling contact between the inner gantry body and the outer guide gantry body, transforming traditional sliding friction into rolling friction, significantly reducing wear and improving sliding smoothness.

[0011] The gantry pressure roller and gantry pressure roller pad are used to buffer the lateral pressure on the inner gantry body during lifting and lowering, and to avoid rigid wear and component deformation caused by uneven load.

[0012] Lateral auxiliary guide assembly: Composed of side roller bracket, side roller pin, side roller sleeve, side roller adjusting screw, side roller baffle, and side stop block. Specifically: The side roller sleeve is mounted on the side roller bracket via the side roller pin, providing lateral limiting and guidance for the inner gantry body; the side roller adjusting screw adaptively adjusts the gap between the side roller sleeve and the inner gantry body, preventing excessive gap from causing shaking or excessive gap from causing excessive wear; the side roller baffle and side stop block limit and protect the side roller assembly, preventing its displacement and failure.

[0013] 2. Power transmission unit

[0014] Drill pipe magazine lifting cylinder: It is hinged between the outer guide gantry and the inner gantry via a lifting cylinder pin, providing direct power for the lifting of the inner gantry.

[0015] The chain drive mechanism consists of a sprocket, a sprocket bushing, a drill pipe lifting drive chain one, a drill pipe lifting drive chain two, a chain link, and a chain connecting plate. Specifically, the sprocket is mounted on the sprocket shaft via the sprocket bushing. The sprocket shaft is fixed by a sprocket shaft pressure plate two and fasteners. The sprocket bushing reduces frictional resistance during sprocket rotation, improving transmission smoothness. Drill pipe lifting drive chains one and two mesh with the sprocket and are connected to the fork body that carries the drill pipe via the chain link and chain connecting plate, converting the rotation of the sprocket into the lifting motion of the fork body, thereby enabling the storage and retrieval of the drill pipe.

[0016] 3. Secure the protective unit

[0017] Reliable connections between components are achieved using fasteners of various specifications (such as hexagonal head bolts, hexagonal nuts, and socket head cap screws); elastic washers (such as elastic washer one and elastic washer two) are used for anti-loosening and vibration reduction, and flat washers are used to increase the force-bearing area, together ensuring the stability of the mechanism structure.

[0018] 4. Working Principle

[0019] When the drilling rig needs to lift and retrieve drill rods from the drill rod magazine: Power drive stage: The drill rod magazine lifting cylinder acts as the power source to perform the extension and retraction action. The cylinder piston rod extends or retracts, and through the hinge structure, it drives the inner gantry body to slide vertically along the outer guide gantry body.

[0020] Guiding constraint stage: During this process, the gantry roller bearings cause rolling friction between the inner gantry body and the outer guide gantry body, significantly reducing the motion resistance; the gantry guide plate, gantry pressure measuring wheel (7), and lateral auxiliary guide components (side roller sleeves, etc.) jointly constrain the motion trajectory of the inner gantry body to prevent swaying and shaking, and ensure lifting accuracy.

[0021] Transmission execution phase: The lifting and lowering of the inner gantry body synchronously drives the sprocket movement. The sprocket and drill rod lifting drive chain one and two meshing transmission, through the chain tie rod and chain connecting plate, convert the sprocket movement into the lifting and lowering movement of the fork shovel body, thereby realizing the picking or placing action of the drill rod. At the same time, the sprocket copper sleeve reduces the friction between the sprocket and the sprocket shaft, making the chain transmission smoother; various fastening and protection components ensure that the connection of each component is reliable, anti-loosening and shock-absorbing during power transmission and movement, further improving the overall stability and service life.

[0022] The inventiveness and novelty of this utility model are mainly reflected in the following: Through the coordinated operation of "gantry guide plate + gantry roller bearing + gantry pressure measuring wheel + lateral auxiliary guide assembly", multi-dimensional precise guidance in the longitudinal and lateral directions is achieved during the lifting and lowering of the inner gantry body, completely solving the defects of swaying and shaking in traditional mechanisms and ensuring the accuracy of drill rod storage and retrieval positions. Combined with the friction-reducing design of the sprocket copper bushing, the lifting and lowering of the fork shovel body is more stable and the transmission efficiency is higher; the load-bearing capacity and operational stability of the mechanism are greatly improved, meeting the storage and retrieval requirements of large-load drill rods. The side roller adjusting screw dynamically adapts the clearance to prevent excessive wear caused by improper clearance, significantly extending the overall service life of the mechanism. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of this utility model.

[0025] Figure 3 This is a sectional view along the AA direction of this utility model.

[0026] Figure 4 This is a sectional view of the present invention along the BB direction.

[0027] Figure 5 This is a side view of the present invention.

[0028] The components corresponding to the numbers in the attached diagram are as follows:

[0029] 1 - Outer guide gantry body, 2 - Inner gantry body, 3 - Gantry guide plate body, 4 - Drill pipe magazine lifting cylinder, 5 - Fork shovel body, 6 - Gantry roller bearing, 7 - Gantry pressure roller, 8 - Gantry pressure roller bushing, 9 - Chain tie rod, 10 - Chain connecting plate, 11 - Gantry upper crossbeam body, 12 - Sprocket, 13 - Sprocket copper bushing, 14 - Drill pipe lifting drive chain one, 15 - Drill pipe lifting drive chain two, 16 - Lifting cylinder pin, 17 - Gantry upper wheel axle, 18 - Wheel axle pressure plate one, 19 - Wheel axle spacer, 20 - Sprocket shaft, 21 - Sprocket shaft pressure plate two, 22 - Elastic washer one, 23 - Elastic washer two, 24 - Elastic washer three, 25 - Hex head bolt one, 26 - Hex nut one, 27 - 1. Socket head cap screw, 28. Hex head bolt, 29. Hex head bolt, 30. Elastic washer, 31. Hex nut, 32. Socket head cap screw, 33. Flat washer, 34. Hex nut, 35. Side roller bracket, 36. Side roller pin, 37. Side roller sleeve, 38. Side roller adjusting screw, 39. Side roller baffle, 40. Side stop block. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] Figures 1-5 As a preferred embodiment of this utility model, it shows a drill rod magazine lifting mechanism for a drilling rig, characterized in that it includes: a support and guide unit, comprising an outer guide gantry body 1, an inner gantry body 2 slidably fitted inside the outer guide gantry body 1, a gantry guide plate body 3 disposed at the mating surface between the inner gantry body 2 and the outer guide gantry body 1, a gantry roller bearing for rolling fit between the inner gantry body 2 and the outer guide gantry body 1, and a gantry pressure measuring wheel 7, a gantry pressure wheel pad 8, and a lateral auxiliary wheel for buffering lateral pressure. The system includes a guide assembly; a power transmission unit comprising a drill pipe magazine lifting cylinder 4 hinged between the outer guide gantry 1 and the inner gantry 2, and a chain transmission mechanism consisting of a sprocket 12, a sprocket sleeve 13, a drill pipe lifting drive chain 14, a drill pipe lifting drive chain 2 15, a chain pull rod 9, and a chain connecting plate 10, wherein the chain transmission mechanism is connected to the fork shovel body 5 used to support the drill pipe; and a fastening and protection unit comprising fasteners of various specifications and elastic washers and flat washers for reliable connection and anti-loosening and vibration reduction of various components.

[0032] The aforementioned drill rod magazine lifting mechanism for drilling rigs is characterized in that the lateral auxiliary guide assembly includes a side roller bracket 35, a side roller pin 36, a side roller sleeve 37, a side roller adjusting screw 38, a side roller baffle 39, and a side stop block 40; the side roller sleeve 37 is mounted on the side roller bracket 35 via the side roller pin 36, the side roller adjusting screw 38 is used to adjust the gap between the side roller sleeve 37 and the inner frame body 2, and the side roller baffle 39 and the side stop block 40 are used to limit and protect the side roller assembly.

[0033] The aforementioned drill rod magazine lifting mechanism for drilling rigs is characterized in that, in the chain transmission mechanism, the sprocket 12 is mounted on the sprocket shaft 20 via the sprocket copper sleeve 13, and the sprocket shaft 20 is fixed by the sprocket shaft pressure plate 21 and fasteners; the drill rod magazine lifting cylinder 4 is hinged to the outer guide frame body 1 and the inner frame body 2 via the lifting cylinder pin 16.

[0034] The aforementioned drill rod magazine lifting mechanism for drilling rigs is characterized in that the fasteners include hexagonal head bolts 25, hexagonal nuts 26, socket head cap screws 27, elastic washers 22, elastic washers 23, and flat washers 33, which are used to achieve reliable connection of each component and prevent loosening and vibration reduction.

[0035] (a) Component assembly process

[0036] Basic support assembly: Using the outer guide gantry 1 as the installation reference, install the gantry guide plate 3; the inner gantry 2 is rolled with the outer guide gantry 1 through the gantry roller bearing 6, and the gantry roller bearing 6 is fixed with fasteners to ensure that the gantry roller bearing 6 rotates flexibly.

[0037] Power component installation: The cylinder body end of the drill pipe magazine lifting cylinder 4 is hinged to the outer guide gantry body 1 through the lifting cylinder pin 16, and the piston rod end is hinged to the inner gantry body 2, forming a lifting power link.

[0038] Chain drive assembly: The sprocket 12 is fitted onto the sprocket shaft 20 via the sprocket sleeve 13. The sprocket shaft 20 is fixed to the upper crossbeam 11 of the inner gantry body 2 by the sprocket shaft pressure plate 21 and fasteners such as hexagonal head bolts. The drill rod lifting drive chains 14 and 15 engage with the sprocket 12 and are connected to the fork shovel body 5 via the chain pull rod 9 and the chain connecting plate 10.

[0039] Lateral guide assembly: The side roller sleeve 37 is installed on the side roller bracket 35 through the side roller pin 36. The gap between the side roller sleeve 37 and the inner door frame body 2 is adjusted by the side roller adjusting screw 38. The side roller assembly is then limited and protected by the side roller baffle 39 and the side stop block 40.

[0040] (II) Institutional Operation Process

[0041] When the drilling rig needs to access the drill pipe:

[0042] The drill pipe magazine lifting cylinder 4 extends and retracts, pushing the inner gantry body 2 to slide up and down along the outer guide gantry body 1; when the inner gantry body 2 moves, the sprocket 12 moves synchronously with the inner gantry body 2, and drives the drill pipe lifting drive chains 14 and 15 to drive the fork shovel body 5 to lift and lower synchronously, realizing the "take / put" action of the drill pipe; during the lifting process, the gantry guide plate body 3, the gantry roller bearing 6, and the lateral auxiliary guide assembly jointly constrain the movement trajectory of the inner gantry body 2 to ensure lifting accuracy; the gantry pressure measuring wheel 7 and the gantry pressure wheel pad 8 buffer the lateral force and reduce component wear.

[0043] This invention solves the core defects of traditional drill pipe magazine lifting mechanisms by innovating the guiding structure, optimizing transmission and support, and controlling wear.

Claims

1. A drill rod magazine lifting mechanism for a drilling rig, characterized in that, include: The supporting guide unit includes an outer guide gantry body (1), an inner gantry body (2) slidably fitted inside the outer guide gantry body (1), a gantry guide plate (3) disposed at the mating surface between the inner gantry body (2) and the outer guide gantry body (1), a gantry roller bearing (6) for rolling fit between the inner gantry body (2) and the outer guide gantry body (1), and a gantry pressure measuring wheel (7), a gantry pressure wheel pad (8), and a lateral auxiliary guide assembly for buffering lateral pressure; the power transmission unit includes a hinged to The drill rod magazine lifting cylinder (4) between the outer guide gantry body (1) and the inner gantry body (2), and the chain transmission mechanism consisting of sprocket (12), sprocket sleeve (13), drill rod lifting drive chain one (14), drill rod lifting drive chain two (15), chain tie rod (9), and chain connecting plate (10), the chain transmission mechanism is connected to the fork shovel body (5) used to carry the drill rod; the fastening and protection unit includes fasteners of various specifications and elastic washers and flat washers, used for reliable connection and anti-loosening and shock absorption of each component.

2. The drill rod magazine lifting mechanism for a drilling rig according to claim 1, characterized in that, The lateral auxiliary guide assembly includes a side roller bracket (35), a side roller pin (36), a side roller sleeve (37), a side roller adjusting screw (38), a side roller baffle (39), and a side stop block (40). The side roller sleeve (37) is mounted on the side roller bracket (35) via the side roller pin (36). The side roller adjusting screw (38) is used to adjust the gap between the side roller sleeve (37) and the inner gantry body (2). The side roller baffle (39) and the side stop block (40) are used to limit and protect the side roller assembly.

3. The drill rod magazine lifting mechanism for a drilling rig according to claim 1, characterized in that, In the chain drive mechanism, the sprocket (12) is mounted on the sprocket shaft (20) through the sprocket copper sleeve (13), and the sprocket shaft (20) is fixed by the sprocket shaft pressure plate (21) and fasteners.

4. The drill rod magazine lifting mechanism for a drilling rig according to claim 1, characterized in that, The drill pipe storage lifting cylinder (4) is hinged to the outer guide gantry (1) and the inner gantry (2) via the lifting cylinder pin (16).

5. The drill rod magazine lifting mechanism for a drilling rig according to claim 1, characterized in that, The fasteners include a hexagonal head bolt (25), a hexagonal nut (26), an internal hexagonal head screw (27), an elastic washer (22), an elastic washer (23), and a flat washer (33) to achieve reliable connection of each component and prevent loosening and vibration reduction.

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