Liftable workover rig derrick

Abstract

The utility model discloses a liftable workover rig derrick, and relates to the technical field of workover rig derrick bases, the liftable workover rig derrick comprises a derrick body and a base frame, the bottom end of the derrick body is connected with a first bottom frame, the first bottom frame is connected with a second bottom frame through a lifting assembly, and the lifting assembly is provided with a locking assembly. The second bottom frame is installed on the base frame through the moving assembly, the lifting assembly comprises L-shaped supports fixed to the two sides of the upper end face of the second bottom frame, strip-shaped holes are formed in the L-shaped supports, and first hydraulic push rods are installed on the two sides of the upper end face of the second bottom frame. According to the utility model, through the cooperative use of the base frame, the first bottom frame, the second bottom frame, the lifting assembly and the locking assembly, the height of the derrick body can be accurately adjusted, the stability of the derrick body can be kept, pipe descending operation is facilitated, and the derrick body can be stably and transversely moved through the arranged moving assembly, so that the derrick body can be stably moved. And large-amplitude shaking is effectively avoided, and it is guaranteed that work is conducted smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of a workover rig derrick base, in particular to a liftable workover rig derrick. Background Art

[0002] The derrick is a device used to place the overhead crane, hang the traveling block, hook, lifting ring, lifting card and other machinery during the drilling or well repair process, as well as to lift and store the drill pipe, oil pipe and sucker rod.

[0003] The prior art can refer to the Chinese patent with the authorization publication number CN 219993627 U, which discloses a petroleum drilling rig derrick adjustment device, including a support seat, a large support seat, a small support seat, a herringbone frame rear leg, a camshaft arm, a pin shaft, and a camshaft. The small support seat is provided with a slide rod, and the slide rod is provided with a slide sleeve connected to the camshaft arm. The slide rod is provided with a plurality of positioning holes, and the slide sleeve is provided with a positioning component that acts on the positioning hole and limits the slide sleeve. The derrick adjustment device still has the following shortcomings:

[0004] First, it is not convenient to fine-tune the height of the derrick, and it is difficult to accurately adjust the derrick, which can easily affect the pipe lowering process;

[0005] Secondly, the derrick cannot be stably moved laterally, and it is easy to cause a large degree of shaking when moving on site, which is not conducive to the smooth progress of the work.

[0006] Therefore, a liftable workover derrick is provided. Utility Model Content

[0007] In view of the deficiencies in the prior art, the utility model provides a liftable derrick for a well repairing machine. By using a base frame, a first bottom frame, a second bottom frame, a lifting assembly and a locking assembly in coordination, the height of the derrick body can be accurately adjusted, and the stability of the derrick body can be maintained, which is helpful for pipe lowering operations. The derrick body can be stably moved laterally through the provided moving assembly, effectively avoiding large-scale shaking and ensuring the smooth progress of work. The deficiencies in the prior art are overcome and the utility model effectively solves the problems that the existing oil drilling rig derrick adjustment device is not convenient for fine-tuning the height of the derrick, it is difficult to accurately adjust the derrick, it is easy to affect the pipe lowering process and it is impossible to stably move the position of the derrick laterally, and it is easy to cause large-scale shaking when moving on site, which is not conducive to the smooth progress of work.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A liftable workover derrick comprises a derrick body and a base frame, wherein the bottom end of the derrick body is connected to a first base frame, the first base frame is connected to a second base frame via a lifting assembly, a locking assembly is provided on the lifting assembly, and the second base frame is mounted on the base frame via a moving assembly;

[0010] The lifting assembly includes an L-shaped bracket fixed on both sides of the upper end surface of the second bottom frame, and a strip hole is opened on the L-shaped bracket. First hydraulic push rods are installed on both sides of the upper end surface of the second bottom frame. The top end of the first hydraulic push rod is connected to a lifting rod. An extension block is provided on the lifting rod. The extension block is connected to the side of the first bottom frame and is slidably engaged with the strip hole.

[0011] Through the above-mentioned scheme, through the coordinated use of the provided base frame, the first bottom frame, the second bottom frame, the lifting assembly and the locking assembly, the height of the derrick body can be accurately adjusted, and the stability of the derrick body can be maintained, which is helpful for the pipe lowering operation, and the derrick body can be stably moved laterally through the provided moving assembly, which effectively avoids large-scale shaking and ensures the smooth progress of the work.

[0012] Preferably, two strip holes are symmetrically provided on the two L-shaped brackets, and two extension blocks are symmetrically provided on the two lifting rods.

[0013] Preferably, the locking assembly includes a second hydraulic push rod fixed to the top end of the lifting rod, one end of the second hydraulic push rod is connected to a push block, the bottom end of the push block is connected to a fixing pin, and the fixing pin is movably inserted in the middle of the lifting rod, and limiting holes are equidistantly provided on the vertical section of the L-shaped bracket, and one end of the fixing pin is plug-fitted with the limiting hole.

[0014] Preferably, the moving component includes two installation grooves opened on both sides of the inner wall of the base frame, screws are rotatably installed in the two installation grooves through bearings, sliding bars are provided at both ends of the second bottom frame, and the two screws are respectively screwed with the two sliding bars, and servo motors are installed on both sides of one end of the outer wall of the base frame, and the output ends of the two servo motors are respectively connected to one end of the two screws for transmission.

[0015] Preferably, the two sliding bars have the same size, and the two sliding bars are respectively slidably engaged with the two mounting grooves.

[0016] Preferably, gaps are reserved between the two ends of the second bottom frame and the inner sides of the two ends of the base frame, and the two ends of the first bottom frame are slidably abutted against one side of the two L-shaped brackets respectively.

[0017] The beneficial effects of the utility model are:

[0018] 1. The extension and retraction of the first hydraulic push rod can drive the lifting rod to move up and down, and then the lifting rod can be used to drive the first bottom frame and the derrick body to move up and down to adjust the height of the derrick body. After the height of the derrick body is adjusted, the second hydraulic push rod is used to push the push block and the fixing pin to move toward the direction of the L-shaped bracket, so that the fixing pin is inserted into the limiting hole of the L-shaped bracket, thereby maintaining the stability of the derrick body and facilitating the pipe lowering operation.

[0019] 2. Use two servo motors to drive two screws to rotate respectively, so that the two screws drive two sliding bars to move respectively, and the two sliding bars drive the second bottom frame to move, so as to achieve fine adjustment of the position of the derrick body, which is convenient and quick, and can avoid large shaking.

[0020] To summarize, through the coordinated use of the base frame, the first bottom frame, the second bottom frame, the lifting assembly and the locking assembly, the height of the derrick body can be accurately adjusted, and the stability of the derrick body can be maintained, which is helpful for the pipe lowering operation, and the moving assembly can stably move the derrick body laterally, effectively avoiding large-scale shaking and ensuring the smooth progress of the work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic diagram of a three-dimensional structure of a liftable well repair rig derrick from a first perspective.

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of a liftable well repair rig derrick from a second viewing angle proposed by the utility model.

[0023] Figure 3 The utility model provides a lifting well repair machine derrick Figure 1 Enlarged structural diagram at A in the middle.

[0024] In the figure: 1. derrick body; 2. second bottom frame; 3. first bottom frame; 4. base frame; 5. servo motor; 6. mounting slot; 7. lifting rod; 8. extension block; 9. L-shaped bracket; 10. strip hole; 11. sliding bar; 12. screw; 13. first hydraulic push rod; 14. fixing pin; 15. second hydraulic push rod; 16. push block; 17. limit hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example 1, reference Figure 1-3A liftable workover rig mast comprises a mast body 1 and a base frame 4, the bottom end of the mast body 1 is connected to a first bottom frame 3, the first bottom frame 3 is connected to a second bottom frame 2 via a lifting assembly, and a locking assembly is provided on the lifting assembly;

[0027] The lifting assembly includes an L-shaped bracket 9 fixed on both sides of the upper end surface of the second bottom frame 2, and a strip hole 10 is opened on the L-shaped bracket 9. A first hydraulic push rod 13 is installed on both sides of the upper end surface of the second bottom frame 2. The top of the first hydraulic push rod 13 is connected to a lifting rod 7. An extension block 8 is provided on the lifting rod 7. The extension block 8 is connected to the side of the first bottom frame 3 and is slidably engaged with the strip hole 10. The two ends of the first bottom frame 3 are respectively slidably engaged with one side of the two L-shaped brackets 9;

[0028] The extension and retraction of the first hydraulic push rod 13 can drive the lifting rod 7 to move up and down, and then the lifting rod 7 can drive the first bottom frame 3 and the derrick body 1 to move up and down, so as to adjust the height of the derrick body 1;

[0029] Two strip holes 10 are symmetrically provided on the two L-shaped brackets 9, and two extension blocks 8 are symmetrically provided on the two lifting rods 7, which ensure the stability of the sliding connection between the lifting rods 7 and the L-shaped brackets 9;

[0030] The locking assembly includes a second hydraulic push rod 15 fixed to the top of the lifting rod 7, one end of the second hydraulic push rod 15 is connected to a push block 16, the bottom end of the push block 16 is connected to a fixing pin 14, and the fixing pin 14 is movably plugged into the middle of the lifting rod 7, and a limiting hole 17 is provided at an equal distance on the vertical section of the L-shaped bracket 9, and one end of the fixing pin 14 is plugged into the limiting hole 17;

[0031] After adjusting the height of the derrick body 1, the second hydraulic push rod 15 is used to push the push block 16 and the fixing pin 14 toward the L-shaped bracket 9, so that the fixing pin 14 is inserted into the limiting hole 17 of the L-shaped bracket 9;

[0032] The second bottom frame 2 is installed on the base frame 4 through a moving component. The moving component includes two installation grooves 6 opened on both sides of the inner wall of the base frame 4. Screws 12 are rotatably installed in the two installation grooves 6 through bearings. Sliding bars 11 are provided at both ends of the second bottom frame 2. The two screws 12 are respectively screwed with the two sliding bars 11. Servo motors 5 are installed on both sides of one end of the outer wall of the base frame 4. The output ends of the two servo motors 5 are respectively connected to one end of the two screws 12. Gaps are reserved between the inner sides of the two ends of the second bottom frame 2 and the two ends of the base frame 4.

[0033] Two servo motors 5 are used to drive two screws 12 to rotate respectively, so that the two screws 12 drive two sliding bars 11 to move respectively, and the two sliding bars 11 drive the second bottom frame 2 to move, thereby achieving fine adjustment of the position of the derrick body 1;

[0034] The two sliding bars 11 have the same size, and are respectively slidably engaged with the two mounting grooves 6 to ensure the stability of the connection between the sliding bars 11 and the base frame 4 .

[0035] Working principle: The extension and retraction of the first hydraulic push rod 13 can drive the lifting rod 7 to lift and lower, and then the lifting rod 7 can be used to drive the first bottom frame 3 and the derrick body 1 to lift and lower, so as to adjust the height of the derrick body 1. After adjusting the height of the derrick body 1, the second hydraulic push rod 15 is used to push the push block 16 and the fixing pin 14 to move toward the direction of the L-shaped bracket 9, so that the fixing pin 14 is inserted into the limiting hole 17 of the L-shaped bracket 9, thereby maintaining the stability of the derrick body 1 and facilitating the pipe lowering operation. The two servo motors 5 are used to drive the two screws 12 to rotate respectively, so that the two screws 12 respectively drive the two sliding bars 11 to move, and the two sliding bars 11 drive the second bottom frame 2 to move, so as to achieve fine-tuning of the position of the derrick body 1, which is convenient and quick, and can avoid large-scale shaking.

[0036] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A derrick of a well repairing machine that can be raised or lowered, comprising a derrick body (1) and a base frame (4), characterized in that: The bottom end of the derrick body (1) is connected to a first bottom frame (3), the first bottom frame (3) is connected to a second bottom frame (2) via a lifting assembly, a locking assembly is provided on the lifting assembly, and the second bottom frame (2) is mounted on a base frame (4) via a moving assembly; The lifting assembly comprises an L-shaped bracket (9) fixed on both sides of the upper end surface of the second bottom frame (2), and a strip hole (10) is opened on the L-shaped bracket (9), and a first hydraulic push rod (13) is installed on both sides of the upper end surface of the second bottom frame (2), and the top end of the first hydraulic push rod (13) is connected to a lifting rod (7), and an extension block (8) is arranged on the lifting rod (7), and the extension block (8) is connected to the side of the first bottom frame (3) and is slidably engaged with the strip hole (10).

2. The liftable workover rig mast according to claim 1, characterized in that: Two strip holes (10) are symmetrically provided on the two L-shaped brackets (9), and two extension blocks (8) are symmetrically provided on the two lifting rods (7).

3. The liftable workover rig mast according to claim 1, characterized in that: The locking assembly comprises a second hydraulic push rod (15) fixed at the top end of the lifting rod (7), one end of the second hydraulic push rod (15) is connected to a push block (16), the bottom end of the push block (16) is connected to a fixing pin (14), and the fixing pin (14) is movably plugged into the middle of the lifting rod (7), and limiting holes (17) are arranged at equal distances on the vertical section of the L-shaped bracket (9), and one end of the fixing pin (14) is plugged into and fitted with the limiting hole (17).

4. The liftable workover rig mast according to claim 1, characterized in that: The moving assembly comprises two mounting grooves (6) provided on both sides of the inner wall of the base frame (4), screw rods (12) being rotatably mounted in the two mounting grooves (6) via bearings, sliding bars (11) being provided at both ends of the second bottom frame (2), the two screw rods (12) being respectively screwed to the two sliding bars (11), servo motors (5) being installed on both sides of one end of the outer wall of the base frame (4), the output ends of the two servo motors (5) being respectively transmission-connected to one end of the two screw rods (12).

5. The liftable workover derrick according to claim 4, characterized in that: The two sliding bars (11) have the same size, and the two sliding bars (11) are respectively slidably engaged with the two mounting grooves (6).

6. The liftable workover rig mast according to claim 1, characterized in that: Gaps are reserved at both ends of the second bottom frame (2) and the inner sides of both ends of the base frame (4), and both ends of the first bottom frame (3) are slidably abutted against one side of two L-shaped brackets (9) respectively.

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