A walking device for an iron roughneck of a petroleum drilling

Abstract

The utility model relates to the field of oil and natural gas drilling technology, especially relate to a walking device for oil drilling iron roughneck. Walking device includes walking frame, drive mechanism and walking mechanism, can install iron roughneck on walking frame, and iron roughneck is installed in the front end of walking frame through connecting piece. Through the rolling contact of the rolling surface of first gyro wheel unit and the inner side lower surface of guide rail, the rolling surface in second gyro wheel unit and the inner side upper surface of guide rail rolling contact, can effectively balance the forward torque generated by iron roughneck, ensure that walking frame moves smoothly, avoid the jamming phenomenon, greatly improve the stability and reliability of walking device operation. The walking device for oil drilling iron roughneck can install iron roughneck on the front end of walking frame, and when the drive mechanism drives walking frame to move to the far end along guide rail, the iron roughneck on walking frame extends the far end of guide rail, and can retract into guide rail when iron roughneck is on standby, effectively release the wellhead space.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas drilling technology, and in particular to a walking device for an iron driller in oil drilling. Background Technology

[0002] In oil and gas drilling, numerous pipe fitting and uncoupling operations are required. The iron drill is a crucial piece of machinery used for these operations. Chinese utility model patent CN221761849U discloses a rail-mounted iron drill for oil drilling, comprising a rail assembly, a traveling assembly, an iron drill body, a circumferential assembly, and a centering assembly. The iron drill body is supported on the rail assembly via the traveling assembly, which allows it to move back and forth. The traveling assembly enables the iron drill body to move vertically up and down. The circumferential assembly and the centering assembly are mounted on the iron drill body, with the centering assembly located above the circumferential assembly. However, the rail assembly cannot extend the iron drill beyond the rail for work, thus occupying wellhead space. Even when not in operation, it still occupies limited drilling platform space, frequently posing a risk of collisions with pipe fittings and other mechanical structures, leading to decreased operational efficiency and increased equipment wear. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a walking device for iron drillers in oil drilling, which solves the technical problem that the large space occupied by the walking device for iron drillers in oil drilling leads to a decrease in work efficiency and an increase in equipment wear.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] This utility model embodiment provides a traveling device for an oil drilling rig with a steel drill bit, including a traveling frame, a drive mechanism, and a traveling mechanism. The steel drill bit can be mounted on the traveling frame, and the steel drill bit is set at the front end of the traveling frame via a connecting member. The traveling mechanism includes two guide rails arranged opposite to each other and parallel to each other, and a first roller unit and a second roller unit disposed on the traveling frame. The first roller unit and the second roller unit are arranged at intervals along the traveling direction of the traveling frame. The rolling surfaces of the first roller unit and the second roller unit are both embedded in the guide rails, and the rolling surface of the first roller unit rolls in contact with the inner lower surface of the guide rail, and is spaced apart from the inner upper surface of the guide rail. The rolling surface of the second roller unit rolls in contact with the inner upper surface of the guide rail, and is spaced apart from the inner lower surface of the guide rail. When the drive mechanism drives the traveling frame to move along the guide rails to the far end, the steel drill bit on the traveling frame extends out of the far end of the guide rail.

[0008] Preferably, the walking mechanism further includes a baffle plate; the baffle plate is disposed at the far end of the guide rail to limit the first roller unit.

[0009] Preferably, the gap between the rolling surface of the first roller unit and the upper surface of the guide rail is less than 2mm; the gap between the rolling surface of the second roller unit and the lower surface of the guide rail is less than 2mm.

[0010] Preferably, the traveling mechanism further includes a mounting frame; two guide rails are mounted on the mounting frame.

[0011] Preferably, the drive mechanism includes a rack, a gear, and a hydraulic motor; the rack is mounted on the mounting frame and extends along the traveling direction of the traveling frame; the hydraulic motor is mounted on the traveling frame and its output end is connected to the gear; the gear meshes with the rack.

[0012] Preferably, both the first roller unit and the second roller unit include two rollers, and the outer peripheral surfaces of the rollers form a rolling surface; the two rollers in the first roller unit are respectively disposed on both sides of the traveling direction of the traveling frame and are respectively embedded in two guide rails; the two rollers in the second roller unit are respectively disposed on both sides of the traveling direction of the traveling frame and are respectively embedded in two guide rails.

[0013] Preferably, the traveling frame includes two traveling plates and at least three connecting columns; the two traveling plates are arranged in parallel, the traveling plates extend along their traveling direction, and rollers are rotatably mounted on the traveling plates; the connecting columns are arranged between the two traveling plates.

[0014] Preferably, it also includes a connecting frame; the connecting frame is disposed between two connecting columns at the far end, and the fixed end of the hydraulic motor is mounted on the traveling frame through the connecting frame.

[0015] Preferably, the guide rail is made of profile material.

[0016] Preferably, it also includes two locking pins; the two locking pins are respectively disposed on two guide rails.

[0017] (III) Beneficial Effects

[0018] The beneficial effects of this utility model are:

[0019] This utility model discloses a walking device for an oil drilling rig, comprising a walking frame, a drive mechanism, and a walking mechanism. The rig can be mounted on the walking frame, and the rig is mounted on the front end of the walking frame via a connector. The walking mechanism includes two guide rails arranged opposite to each other and parallel to each other, as well as a first roller unit and a second roller unit arranged on the walking frame. The first roller unit and the second roller unit are arranged at intervals along the traveling direction of the walking frame, and the rolling surfaces of the first roller unit and the second roller unit are both embedded in the guide rails. Due to the heavy weight of the iron drill bit, when positioned at the front, it causes the traveling frame to tilt forward. The rolling surface of the first roller unit rolls into contact with the inner lower surface of the guide rail, while the rolling surface of the first roller unit is spaced apart from the inner upper surface of the guide rail. Similarly, the rolling surface of the second roller unit rolls into contact with the inner upper surface of the guide rail, while the rolling surface of the second roller unit is spaced apart from the inner lower surface of the guide rail. This effectively balances the forward tilting moment generated by the iron drill bit. Even if the traveling frame tilts forward during its movement, the reasonable contact relationship between the rollers and the guide rail ensures smooth movement of the traveling frame and prevents jamming. This greatly improves the stability and reliability of the traveling device, providing efficient and stable equipment support for the uncoupling and splicing operations of oil drilling tools. Therefore, the traveling device for oil drilling iron drillers can install the iron driller at the front end of the traveling frame. When the drive mechanism drives the traveling frame to move to the far end along the guide rail, the iron driller on the traveling frame extends out of the far end of the guide rail. When the iron driller is idle, it can retract into the guide rail, effectively freeing up wellhead space, significantly reducing the risk of collision with pipes and other mechanical structures, greatly improving work efficiency, and reducing equipment wear. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the walking device for an iron driller in oil drilling according to the present invention.

[0021] Figure 2 A cross-sectional view of the walking device used by an iron driller in oil drilling;

[0022] Figure 3 This is a schematic diagram of the walking frame structure;

[0023] Figure 4 A schematic diagram of the structure of the iron driller mounted on the walking device (the iron driller extends out of the front end of the guide rail).

[0024] [Explanation of Labels in the Attached Image]

[0025] 1: Walking frame; 11: Walking plate; 12: Connecting column;

[0026] 2: Drive mechanism; 21: Rack; 22: Gear; 23: Hydraulic motor;

[0027] 3: Traveling mechanism; 31: Guide rail; 32: First roller unit; 33: Second roller unit; 34: Cover plate; 35: Mounting bracket;

[0028] 4: Iron driller;

[0029] 5: Connectors;

[0030] 6: Connecting bracket;

[0031] 7: Locking pin. Detailed Implementation

[0032] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1 As shown, this embodiment of the utility model provides a walking device for oil drilling rig operators. The walking device includes a walking frame 1, a drive mechanism 2, and a walking mechanism 3, as follows: Figure 4 As shown, the iron drill 4 can be installed on the traveling frame 1, and the iron drill 4 is set at the front end of the traveling frame 1 through the connector 5.

[0034] like Figure 2 As shown, the traveling mechanism 3 includes two guide rails 31, a connecting frame 6, a first roller unit 32, and a second roller unit 33. The two guide rails 31 are arranged opposite to each other and parallel on the mounting frame 35. The first roller unit 32 and the second roller unit 33 are arranged on the traveling frame 1 and spaced apart along the traveling direction of the traveling frame 1. The rolling surfaces of the first roller unit 32 and the second roller unit 33 are both embedded in the guide rails 31. Each of the first roller unit 32 and the second roller unit 33 includes two rollers, the outer circumferential surface of which forms the rolling surface. The two rollers in the first roller unit 32 are respectively located on both sides of the traveling direction of the traveling frame 1, and are respectively embedded in the two guide rails 31. The two rollers in the second roller unit 33 are respectively located on both sides of the traveling direction of the traveling frame 1, and are respectively embedded in the two guide rails 31.

[0035] The rolling surface of the first roller unit 32 rolls in contact with the inner lower surface of the guide rail 31, and the rolling surface of the first roller unit 32 is spaced apart from the inner upper surface of the guide rail 31. The rolling surface of the second roller unit 33 rolls in contact with the inner upper surface of the guide rail 31, and the rolling surface of the second roller unit 33 is spaced apart from the inner lower surface of the guide rail 31. When the drive mechanism 2 drives the traveling frame 1 to move along the guide rail 31 to the far end, the iron drill 4 on the traveling frame 1 extends out of the far end of the guide rail 31. When the iron drill 4 is in standby mode, the drive mechanism 2 can drive the iron drill 4 to retract into the guide rail 31.

[0036] Due to the large weight of the iron drill 4, when it is at the front, it causes the traveling frame 1 to tilt forward. The rolling surface of the first roller unit 32 rolls into contact with the inner lower surface of the guide rail 31, and the rolling surface of the second roller unit 33 rolls into contact with the inner upper surface of the guide rail 31. This effectively balances the forward tilting torque generated by the iron drill 4. Even if the traveling frame 1 tilts forward during its movement, the reasonable contact relationship between the rollers and the guide rail 31 ensures that the traveling frame 1 moves smoothly and avoids jamming. This greatly improves the stability and reliability of the traveling device and provides efficient and stable equipment support for the uncoupling operation of oil drilling pipes.

[0037] Therefore, the traveling device for the oil drilling iron drill 4 can install the iron drill 4 at the front end of the traveling frame 1. When the driving mechanism 2 drives the traveling frame 1 to move along the guide rail 31 to the far end, the iron drill 4 on the traveling frame 1 extends out of the far end of the guide rail 31. When the iron drill 4 is on standby, it can retract into the guide rail 31, effectively releasing the wellhead space, significantly reducing the risk of collision with pipes and other mechanical structures, greatly improving operating efficiency, and reducing equipment wear.

[0038] In practical applications, the gap between the rolling surface of the first roller unit 32 and the upper surface of the guide rail 31 is less than 2mm, and the gap between the rolling surface of the second roller unit 33 and the lower surface of the guide rail 31 is less than 2mm. Controlling the gaps between the first roller unit 32 and the upper surface of the guide rail 31, and between the second roller unit 33 and the lower surface of the guide rail 31, to less than 2mm ensures that the roller units can roll smoothly within the guide rail 31 while minimizing wobbling caused by excessive gaps. This makes the drill bit 4 more stable during operation, improving the accuracy of pipe fitting and unfastening operations, reducing operational errors caused by wobbling, improving work quality, and extending equipment lifespan. In this embodiment, the gap between the rolling surface of the first roller unit 32 and the upper surface of the guide rail 31 is 1mm, and the gap between the rolling surface of the second roller unit 33 and the lower surface of the guide rail 31 is 1mm.

[0039] like Figure 1 and Figure 2 As shown, the traveling mechanism 3 also includes a baffle plate 34, which is disposed at the far end of the guide rail 31 to limit the rollers in the first roller unit 32, ensuring that the traveling frame 1 does not exceed the safety limit when moving on the guide rail 31. This greatly improves the safety of the traveling device operation, avoids the loss of control of the position of the iron drill 4 due to excessive movement of the traveling frame 1, reduces the occurrence of potential safety accidents, and ensures the smooth progress of oil drilling operations.

[0040] like Figure 1 and Figure 3As shown, the drive mechanism 2 includes a rack 21, a gear 22, and a hydraulic motor 23. The rack 21 is mounted on the mounting bracket 35 and extends along the traveling direction of the traveling frame 1. The hydraulic motor 23 is mounted on the traveling frame 1, and its output end is connected to the gear 22. The gear 22 meshes with the rack 21, thereby enabling precise control of the traveling speed and displacement of the traveling frame 1. This meets the precise adjustment requirements of the drill 4 for its working position under different operating scenarios, improving work efficiency. Simultaneously, the hydraulic drive has a large torque output, which can accommodate the weight of the drill 4 and the traveling frame 1, ensuring the stability and reliability of the traveling device's operation.

[0041] To ensure the strength of the traveling frame 1, the traveling frame 1 includes two traveling plates 11 and at least three connecting columns 12. The two traveling plates 11 are arranged in parallel and extend along their traveling direction. Rollers are rotatably mounted on the traveling plates 11. The connecting columns 12 are located between the two traveling plates 11, enhancing the connection stability between the two traveling plates 11. This ensures that the traveling frame 1 will not deform or be damaged due to stress during the process of carrying the iron drill 4 and moving, effectively improving the load-bearing capacity and durability of the traveling frame 1, thereby ensuring the stability and reliability of the iron drill 4's operation and reducing equipment maintenance costs. The connecting columns 12 can be selected in different shapes and materials depending on the load-bearing weight above them.

[0042] To facilitate the installation of the hydraulic motor 23, the traveling device also includes a connecting frame 6, which is positioned between two connecting columns 12 at the far end. The fixed end of the hydraulic motor 23 is mounted on the traveling frame 1 via the connecting frame 6. This ensures that the hydraulic motor 23 can stably output power during operation, avoiding vibration or displacement caused by unstable installation that could affect the driving effect, further improving the stability and reliability of the drive mechanism 2, and ensuring that the traveling frame 1 and the iron drill 4 can move as expected.

[0043] In this embodiment, the guide rail 31 is made of profile material, which has good strength, rigidity and processing performance, and can meet the strength and stability requirements of the guide rail 31 when bearing the walking frame 1 and the iron drill 4, while being easy to process into the required shape and size.

[0044] like Figure 1 As shown, the walking device also includes two locking pins 7, which are respectively set on two guide rails 31. The locking pins 7 can lock the walking frame 1 on the guide rail 31 after it moves to a specific position, so as to prevent the walking frame 1 from moving accidentally.

[0045] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A walking device for an iron driller in oil drilling, characterized in that, It includes a walking frame (1), a drive mechanism (2) and a walking mechanism (3). A drill bit (4) can be installed on the walking frame (1). The drill bit (4) is set at the front end of the walking frame (1) through a connector (5). The walking mechanism (3) includes two guide rails (31) arranged opposite to each other and parallel to each other, and a first roller unit (32) and a second roller unit (33) arranged on the walking frame (1). The first roller unit (32) and the second roller unit (33) are arranged at intervals along the traveling direction of the walking frame (1). The first roller unit (32) and the second roller unit (33) are both embedded in the guide rail (31), and the rolling surface of the first roller unit (32) is in rolling contact with the inner lower surface of the guide rail (31), the rolling surface of the first roller unit (32) is spaced apart from the inner upper surface of the guide rail (31), the rolling surface of the second roller unit (33) is in rolling contact with the inner upper surface of the guide rail (31), and the rolling surface of the second roller unit (33) is spaced apart from the inner lower surface of the guide rail (31); When the drive mechanism (2) drives the walking frame (1) to move to the far end along the guide rail (31), the iron drill (4) on the walking frame (1) extends out of the far end of the guide rail (31).

2. The walking device for an iron driller in oil drilling as described in claim 1, characterized in that: The walking mechanism (3) also includes a baffle plate (34); The baffle (34) is disposed at the far end of the guide rail (31) to limit the first roller unit (32).

3. The walking device for an iron driller in oil drilling as described in claim 1, characterized in that: The gap between the rolling surface in the first roller unit (32) and the upper surface of the guide rail (31) is less than 2 mm; The gap between the rolling surface in the second roller unit (33) and the lower surface of the guide rail (31) is less than 2 mm.

4. The walking device for an iron driller in oil drilling as described in claim 1, characterized in that: The walking mechanism (3) also includes a mounting bracket (35); The two guide rails (31) are mounted on the mounting bracket (35).

5. The walking device for an iron driller in oil drilling as described in claim 4, characterized in that: The drive mechanism (2) includes a rack (21), a gear (22), and a hydraulic motor (23); The rack (21) is disposed on the mounting frame (35) and extends along the traveling direction of the traveling frame (1); The fixed end of the hydraulic motor (23) is set on the walking frame (1) and the output end of the hydraulic motor (23) is connected to the gear (22); The gear (22) meshes with the rack (21).

6. The walking device for an iron driller in oil drilling as described in claim 5, characterized in that: Both the first roller unit (32) and the second roller unit (33) include two rollers, and the outer peripheral surface of the rollers forms the rolling surface; The two rollers in the first roller unit (32) are respectively disposed on both sides of the traveling direction of the walking frame (1) and are respectively embedded in the two guide rails (31); The two rollers in the second roller unit (33) are respectively disposed on both sides of the traveling direction of the walking frame (1) and are respectively embedded in the two guide rails (31).

7. The walking device for an iron driller in oil drilling as described in claim 6, characterized in that: The walking frame (1) includes two walking plates (11) and at least three connecting columns (12); The two walking plates (11) are arranged in parallel, the walking plates (11) extend along their traveling direction, and the rollers are rotatably mounted on the walking plates (11); The connecting column (12) is positioned between the two walking plates (11).

8. The walking device for an iron driller in oil drilling as described in claim 7, characterized in that: It also includes a connecting frame (6); The connecting frame (6) is located between the two connecting columns (12) at the far end, and the fixed end of the hydraulic motor (23) is mounted on the walking frame (1) through the connecting frame (6).

9. The walking device for an iron driller in oil drilling as described in claim 1, characterized in that: The guide rail (31) is made of profile material.

10. The walking device for an iron driller in oil drilling as described in claim 1, characterized in that: It also includes two locking pins (7); The two locking pins (7) are respectively disposed on the two guide rails (31).

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