Hydraulic clamp suspension height adjusting device

Abstract

The utility model discloses a hydraulic clamp hanging height adjusting device which comprises a double-mother barrel, the middle of the double-mother barrel is a solid body, connecting holes are formed in the two axial ends of the double-mother barrel towards the center, the double-mother barrel is of a central symmetry structure, a bevel gear set is arranged in the center of the double-mother barrel, and the bevel gear set drives the double-mother barrel to rotate. Inner screw threads are formed in the axial inner wall of a connecting hole of the double-mother barrel, the buckle type of the inner screw threads is connected with lead screws in a matched mode, the two ends of the double-mother barrel are connected with the lead screws through the inner screw threads respectively, the lead screws extend into the inner wall of the double-mother barrel, the ends of the two lead screws are fixed, and the lengths of the lead screws extending into the inner wall of the double-mother barrel are adjusted by rotating the double-mother barrel. The utility model solves the problem of low efficiency in the process of adjusting the suspension height of the hydraulic clamp in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic pliers and relates to a suspension height adjustment device for hydraulic pliers. Background Art

[0002] Hydraulic tongs, also known as hydraulic power tongs, are essential equipment during drilling and workover operations. At workover sites, hydraulic tongs are typically suspended using a wire rope. The wire rope passes through the second-level crossbeam of the derrick, with one end connected to the hydraulic tongs and the other to the derrick base. Both ends are secured with rope clips.

[0003] When the well repair operation process changes, it is necessary to replace the wellhead with a different pressure level. The wellhead height of different pressure levels is different, and the wellhead working surface height changes accordingly. The working surface of the hydraulic clamp also changes accordingly. At this time, the suspension height of the hydraulic clamp needs to be adjusted; for normal drilling operations, the wellhead needs to be equipped with a self-sealing wellhead sealer. For some special operations, such as pulling in and out large-diameter tools, the wellhead cannot be equipped with a self-sealing wellhead sealer, resulting in a height difference. At this time, the suspension height of the hydraulic clamp also needs to be adjusted.

[0004] Adjusting the suspension height of the hydraulic tongs is a frequent task at workover sites. The current adjustment method involves removing the rope clip at the base of the derrick, retracting the wire rope to adjust the hydraulic tongs to the appropriate height, and then reinstalling the rope clip. This method is time-consuming, labor-intensive, and inefficient. In an emergency, the hydraulic tongs height cannot be adjusted in time, which may cause downhole operation quality and well control accidents. Utility Model Content

[0005] The utility model aims to provide a hydraulic clamp suspension height adjustment device, which solves the problem of low efficiency in the existing process of adjusting the suspension height of the hydraulic clamp.

[0006] The technical solution adopted by the present invention is a hydraulic pliers suspension height adjustment device, comprising a double-mother cylinder, a solid body in the middle position of the double-mother cylinder, connecting holes are provided at both axial ends of the double-mother cylinder toward the center position, the double-mother cylinder presents a centrally symmetrical structure, a bevel gear set is provided at the center position of the double-mother cylinder, and the bevel gear set drives the double-mother cylinder to rotate; an inner thread is provided on the axial inner wall of the connecting hole of the double-mother cylinder, the thread shape of the inner thread matches the connecting screw rod, the two ends of the double-mother cylinder are respectively connected to the screw rod through the inner thread, the screw rod extends into the inner wall of the double-mother cylinder, the two screw rod ends are fixed, and the length of the screw rod extending into the inner wall of the double-mother cylinder is adjusted by rotating the double-mother cylinder.

[0007] The utility model is also characterized in that the bevel gear set includes a driven bevel gear, which is sleeved and fixed at the center position of the double mother cylinder, and the axis of the driven bevel gear is vertically meshed and connected to the driving bevel gear. The center of the driving bevel gear is sleeved and fixed with a rotating shaft, the axis of the rotating shaft and the axis of the double mother cylinder are always perpendicular, and the rotating shaft is connected to the rotating handle.

[0008] A bevel gear set shield is arranged at the center of the double mother cylinder. The double mother cylinder rotates through the bevel gear set shield, and the bevel gear set shield rotates inside and is connected to the rotating shaft.

[0009] The rotating handle adopts a crank handle structure.

[0010] The screw rod body is a through-wire structure, an anti-tripping closing cap is sleeved on the screw rod, and the center of the anti-tripping closing cap is connected to the screw rod through-wire.

[0011] The anti-dropout closing cap is provided with a groove inwardly near one end of the double mother cylinder, and the outer walls of both ends of the double mother cylinder are provided with external threads. The inner part of the groove of the anti-dropout closing cap is connected to the double mother cylinder by matching with the external threads.

[0012] A circular ring is arranged at the outwardly extending end of the screw rod.

[0013] The beneficial effects of the utility model are as follows: the hydraulic clamp suspension height adjustment device of the utility model can accurately adjust the suspension height of the hydraulic clamp, which is convenient, flexible and reliable, ensuring the safety of well repair operations, and achieving the effect of conveniently adjusting the height of the hydraulic clamp body, solving the current common problem of adjusting the height of the hydraulic clamp by changing the length of the suspended hydraulic clamp wire rope, frequent disassembly and installation of wire rope clips, which is time-consuming and labor-intensive, inefficient, and may cause downhole quality and well control accidents if not adjusted in time, and ensuring that the height matches the working height of the hydraulic clamp on the drilling platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the hydraulic pliers suspension height adjustment device of the utility model.

[0015] In the figure, 1. double mother cylinder, 2. screw, 3. bevel gear set, 4. rotating handle, 5. bevel gear set cover, 6. anti-tripping closing cap. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Example 1

[0018] The utility model of the hydraulic clamp suspension height adjustment device has a structure as follows Figure 1 As shown, it includes a double mother cylinder 1, the middle position of the double mother cylinder 1 is a solid body, and connecting holes are opened at both axial ends of the double mother cylinder 1 toward the center position. The double mother cylinder 1 has a centrally symmetrical structure, and a bevel gear set 3 is set at the center position of the double mother cylinder 1, and the bevel gear set 3 drives the double mother cylinder 1 to rotate; an inner thread is opened on the axial inner wall of the connecting hole of the double mother cylinder 1, and the thread shape of the inner thread matches the connecting screw rod 2. The two ends of the double mother cylinder 1 are respectively connected to the screw rod 2 through the inner thread, and the screw rod 2 extends into the inner wall of the double mother cylinder 1. The ends of the two screw rods 2 are fixed, and the length of the screw rod 2 extending into the inner wall of the double mother cylinder 1 is adjusted by rotating the double mother cylinder 1.

[0019] Example 2

[0020] On the basis of Example 1, the bevel gear set 3 includes a driven bevel gear, which is sleeved and fixed in the center position of the double mother cylinder 1. The axis of the driven bevel gear is vertically meshed with the active bevel gear. The rotating shaft is sleeved and fixed in the center of the active bevel gear. The axis of the rotating shaft and the axis of the double mother cylinder 1 are always perpendicular. The rotating shaft is connected to the rotating handle 4. The rotating handle 4 drives the rotating shaft to drive the active bevel gear to rotate, so that the driven bevel gear drives the double mother cylinder 1 to rotate.

[0021] Example 3

[0022] On the basis of Example 2, a bevel gear set shield 5 is set at the center position of the double mother cylinder 1. The double mother cylinder 1 rotates through the bevel gear set shield 5. The bevel gear set shield 5 rotates inside the bevel gear set shield 5 to connect the rotating shaft. The bevel gear set shield 5 prevents the bevel gear set 3 from being contaminated and damaged.

[0023] The rotating handle 4 adopts a crank structure, one end of which is fixed to the rotating shaft. By rotating the rotating handle 4, the active bevel gear is driven to rotate, and finally the driven bevel gear and the double mother cylinder are driven to rotate. Different rotation directions adjust the extension of the screw.

[0024] Example 4

[0025] On the basis of Example 1, the rod body of the screw rod 2 is a through-thread structure, and an anti-tripping cap 6 is sleeved on the screw rod 2. The center of the anti-tripping cap 6 is connected to the screw rod 2 through the thread. The anti-tripping cap 6 is provided with a groove inward near one end of the double-mother cylinder 1, and external threads are provided on the outer walls of both ends of the double-mother cylinder 1. The inside of the groove of the anti-tripping cap 6 is connected to the double-mother cylinder 1 by matching the external thread, so as to prevent the screw rod 2 from being tripped when the depth of being screwed into the double-mother cylinder 1 is insufficient, thereby preventing personal injury.

[0026] A circular ring is provided at the outwardly extending end of the screw rod 2.

[0027] The working principle of the hydraulic pliers suspension height adjustment device of the present invention is as follows: a bevel gear set 3 is set at the center position of the double mother cylinder 1, the bevel gear set 3 drives the double mother cylinder 1 to rotate, the screw rod 2 matches the inner wall thread of the double mother cylinder 1, and the suspension height of the hydraulic pliers is accurately adjusted, which is convenient, flexible and reliable, ensuring the safety of well repair operations; an anti-dropout closing cap 6 is installed on the screw rod 2 for a self-locking function, and the height of the hydraulic pliers body is fixed to ensure that the height matches the working height of the hydraulic pliers on the drilling platform. The hydraulic pliers suspension height adjustment device of the present invention has sufficient rigidity and strength, and is convenient for adjusting the height of the hydraulic pliers body to withstand various working conditions during operation.

[0028] The operating procedure of this new hydraulic tongs suspension height adjustment device is as follows: Adjust the screws 2 at both ends of the double-core cylinder 1 to equal exposed lengths. Secure one screw 2 to the derrick using a wire rope, while the other screw 2 is secured to the wire rope of the suspended hydraulic tongs. This step only needs to be performed once; subsequent height adjustments do not require repetition. Turning the rotary handle 4 rotates the double-core cylinder 1 using the bevel gear set 3. Insert two extension rods vertically through the inner rings of the screws 2 at both ends to prevent the screws 2 or wire rope from rotating. Adjust the suspension height of the hydraulic tongs by inserting the screws 2 into the double-core cylinder 1 at different depths.

[0029] The utility model improves the fixed installation structure of the hydraulic clamp suspension height adjustment device, which has low modification cost, strong practicality, high overall strength, easy installation, low construction risk, high efficiency, can be installed quickly, has good fixed installation stability, reduces the burden on maintenance personnel, and improves safety performance. A total of 3 sets have been promoted and applied at the well repair site of the Oil Production Plant No. 10. Compared with the previous use of the tool, the efficiency of adjusting the suspension height of the hydraulic clamp has been increased by 300%. It is safe and reliable, can be used repeatedly for a long time, and has broad application prospects.

Claims

1. Hydraulic clamp suspension height adjustment device, characterized in that: The invention comprises a double-mother cylinder (1), wherein the middle position of the double-mother cylinder (1) is a solid body, and connecting holes are provided at both axial ends of the double-mother cylinder (1) toward the center position, and the double-mother cylinder (1) presents a centrally symmetrical structure, and a bevel gear set (3) is provided at the center position of the double-mother cylinder (1), and the bevel gear set (3) drives the double-mother cylinder (1) to rotate; an inner thread is provided on the axial inner wall of the connecting hole of the double-mother cylinder (1), and the thread shape of the inner thread matches the connecting screw rod (2), and the two ends of the double-mother cylinder (1) are respectively connected to the screw rod (2) through the inner thread, and the screw rod (2) extends into the inner wall of the double-mother cylinder (1), and the ends of the two screw rods (2) are fixed, and the length of the screw rod (2) extending into the inner wall of the double-mother cylinder (1) is adjusted by rotating the double-mother cylinder (1).

2. The hydraulic clamp suspension height adjustment device according to claim 1, characterized in that: The bevel gear set (3) comprises a driven bevel gear, which is sleeved and fixed at the center of the double mother cylinder (1), and the axis of the driven bevel gear is meshed and connected to the driving bevel gear in a vertical direction. A rotating shaft is sleeved and fixed in the center of the driving bevel gear, and the axis of the rotating shaft is always perpendicular to the axis of the double mother cylinder (1). The rotating shaft is connected to a rotating handle (4).

3. The hydraulic pliers suspension height adjustment device according to claim 2, characterized in that: A bevel gear set shield (5) is provided at the center of the double mother cylinder (1); the double mother cylinder (1) rotates through the bevel gear set shield (5); and the bevel gear set shield (5) rotates inside and is connected to a rotating shaft.

4. The hydraulic pliers suspension height adjustment device according to claim 2, characterized in that: The rotating handle (4) adopts a crank structure.

5. The hydraulic clamp suspension height adjustment device according to claim 1, characterized in that: The body of the screw rod (2) is a through-wire structure; an anti-dropout closing cap (6) is sleeved on the screw rod (2); and the center of the anti-dropout closing cap (6) is connected to the screw rod (2) through-wire.

6. The hydraulic pliers suspension height adjustment device according to claim 5, characterized in that: The anti-dropout closing cap (6) is provided with a groove inwardly near one end of the double-mother cylinder (1), and external threads are provided on the outer walls of both ends of the double-mother cylinder (1). The interior of the groove of the anti-dropout closing cap (6) is connected to the double-mother cylinder (1) by matching with the external threads.

7. The hydraulic clamp suspension height adjustment device according to claim 1, characterized in that: A circular ring is provided at the outwardly extending end of the screw rod (2).

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