Automatic in-place locking telescopic sleeve

Abstract

The utility model relates to the technical field of oil drilling equipment, in particular to an automatic in-place locking telescopic casing pipe which comprises an inner casing pipe and an outer casing pipe, the first end of the inner casing pipe is connected with the top layer of a base, the second end of the inner casing pipe is arranged in the outer casing pipe in a penetrating mode, and the inner casing pipe can slide in the axial direction of the outer casing pipe. The end, away from the inner sleeve, of the outer sleeve is connected with the bottom layer of the base, the end, close to the inner sleeve, of the outer sleeve is fixedly connected with a guide pipe, the outer wall of the outer sleeve is fixedly connected with a lock pin oil cylinder, the lock pin oil cylinder is connected with a lock pin, and the end, away from the inner sleeve, of the guide pipe is provided with a horn-shaped guide groove. And a positioning pin matched with the horn-shaped guide groove is arranged at the second end of the inner sleeve. Automatic positioning can be achieved through matching of the horn-shaped guide groove and the positioning pin, rapid and accurate installation of the base is achieved through automatic locking of the lock pin oil cylinder, labor intensity is remarkably reduced, and operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling equipment technology, and in particular to a telescopic sleeve with automatic locking mechanism. Background Technology

[0002] In the current oil drilling industry, increasingly stringent requirements are being placed on the convenience and automation of drilling contractors' operations. Currently, the lifting and lowering of oil drilling rig bases requires manual operation and cannot achieve automatic locking, resulting in lengthy lifting and lowering processes. To adapt to the industry's profound trend towards intelligent and automated transformation and to meet the oil industry's high standards for efficiency, safety, and unmanned operation, the development of a telescopic casing capable of automatic locking is particularly urgent. Utility Model Content

[0003] The purpose of this invention is to solve the problems in the prior art and provide a telescopic sleeve that automatically locks in place.

[0004] The technical solution of this utility model is:

[0005] An automatically locking telescopic sleeve includes an inner sleeve and an outer sleeve. The first end of the inner sleeve is connected to the top layer of the base, and the second end of the inner sleeve passes through the outer sleeve. The inner sleeve can slide along the axial direction of the outer sleeve. The end of the outer sleeve away from the inner sleeve is connected to the bottom layer of the base. A guide tube is fixedly connected to the end of the outer sleeve near the inner sleeve. The guide tube is located between the outer sleeve and the inner sleeve. A locking cylinder is fixedly connected to the outer wall of the outer sleeve. The locking cylinder is connected to a locking pin. The outer sleeve and the guide tube are respectively provided with a first locking pin hole and a second locking pin hole corresponding to the locking pin. The inner sleeve is provided with a high-position locking pin hole and a low-position locking pin hole adapted to the locking pin. The end of the guide tube away from the inner sleeve is provided with a flared guide groove. The second end of the inner sleeve is provided with a positioning pin adapted to the flared guide groove. The base is connected to the top and bottom layers via an inner and outer sleeve. When the base is raised and lowered, the telescopic sleeve automatically extends and retracts with the height of the top layer. After being raised to the high position, it can be automatically positioned by the cooperation of the horn-shaped guide groove and the positioning pin. The inner and outer sleeves are automatically locked by the locking pin cylinder, thereby fixing the base. After being lowered to the low position, the telescopic sleeve is in its shortest state. The inner and outer sleeves are locked by the locking pin cylinder to prevent the top layer of the base from jumping during transportation and causing damage to the equipment.

[0006] As a preferred technical solution, a cylinder connection flange is provided on the outer wall of the outer sleeve, and the locking pin cylinder is connected to the outer sleeve through the cylinder connection flange, which facilitates the maintenance and repair of the locking pin cylinder without the need for extensive disassembly of the entire sleeve structure.

[0007] As a preferred technical solution, both the first locking pin hole and the second locking pin hole are provided in two through-holes along the radial direction of the outer sleeve.

[0008] As a preferred technical solution, the high-position locking pin hole is located at the end of the inner sleeve near the outer sleeve, and the low-position locking pin hole is located at the end of the inner sleeve away from the outer sleeve. Two high-position and two low-position locking pin holes are provided, both extending radially through the inner sleeve. When the top layer of the base is raised to the high position, the high-position locking pin hole aligns with the first and second locking pin holes, and the locking pin is extended by a locking pin cylinder to complete the high-position installation. When the top layer of the base is lowered to the low position, the low-position locking pin hole aligns with the first and second locking pin holes, and the locking pin is extended by a locking pin cylinder to complete the low-position installation.

[0009] As a further preferred technical solution, the outer sleeve is provided with a high-level observation hole and a low-level observation hole. The high-level observation hole is located at the position of the trumpet-shaped guide groove, and the low-level observation hole is located at the end of the outer sleeve away from the inner sleeve. The position of the positioning pin, i.e., whether it has been raised to the correct position, can be observed at any time through the high-level and low-level observation holes.

[0010] As a preferred technical solution, the guide tube is connected to the outer sleeve via an end flange.

[0011] As a preferred technical solution, the inner sleeve is connected to the top layer of the base via a pin, and the outer sleeve is connected to the bottom layer of the base via a pin.

[0012] The telescopic sleeve of this utility model with automatic locking and positioning has the following advantages compared with the prior art:

[0013] 1. The installation of the pin shaft by means of hydraulic cylinder drive enables easy, fast and accurate installation of the pin shaft, which significantly reduces labor intensity and improves work efficiency;

[0014] 2. The base automatically positions itself after being raised and lowered into place. The flared guide groove can correct the misalignment of the inner sleeve, ensuring that the inner and outer sleeves are always precisely aligned, further improving the convenience and accuracy of the lifting and lowering operation.

[0015] 3. Low-level and high-level observation holes are provided, allowing operators to observe the position of the positioning pin and whether it has been lifted into place in real time;

[0016] 4. The modular and integrated design greatly simplifies the relocation process of the equipment between different work locations, eliminating the need for repeated disassembly and assembly that requires a lot of time and manpower, and greatly improving the mobility and adaptability of the equipment. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of the telescopic sleeve of this utility model;

[0018] Figure 2 This utility model Figure 1 Medium local magnification Figure I ;

[0019] Figure 3 This is a schematic diagram of the guide tube structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the telescopic sleeve in the retracted state of this utility model;

[0021] Figure 5 This utility model Figure 4 Medium local magnification Figure II ;

[0022] Figure 6 This is a schematic diagram of the telescopic sleeve of this utility model in working condition;

[0023] Figure 7 This utility model Figure 6 Medium local magnification Figure III ;

[0024] The components are as follows: 1. Inner sleeve; 2. Guide tube; 3. Outer sleeve; 4. Locking pin cylinder; 5. Trumpet-shaped guide groove; 6. Positioning pin; 7. Low-position locking pin hole; 8. Locking stop pin; 9. Top layer of base; 10. Bottom layer of base; 11. High-position observation hole; 12. Low-position observation hole; 13. High-position locking pin hole; 14. Cylinder connecting flange; 15. Second locking pin hole; 16. End flange. Detailed Implementation

[0025] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0026] like Figures 1-7 As shown, this embodiment of an automatically locking telescopic sleeve includes an inner sleeve 1, an outer sleeve 3, a guide tube 2, and a locking cylinder 4. The top end of the inner sleeve 1 is connected to the top layer 9 of the base by a pin, and the bottom end of the inner sleeve 1 passes through the outer sleeve 3, allowing the inner sleeve 1 to slide axially along the outer sleeve 3. The bottom end of the outer sleeve 3 is connected to the bottom layer 10 of the base by a pin, and the top end of the outer sleeve 3 is connected to the guide tube 2 via an end flange 16. The guide tube 2 is positioned between the outer sleeve 3 and the inner sleeve 1, serving a guiding and positioning function. The end of the guide tube 2 away from the inner sleeve 1 has a flared guide groove 5, and the inner sleeve 1 has a positioning pin 6 near its bottom end that matches the flared guide groove 5.

[0027] A cylinder connecting flange 14 is provided on the outer wall of the outer sleeve 3. The locking cylinder 4 is connected to the outer sleeve 3 through the cylinder connecting flange 14, which facilitates the maintenance and repair of the locking cylinder 4 without the need for extensive disassembly of the entire sleeve structure. The locking cylinder 4 is connected to a locking pin 8. The outer sleeve 3 and the guide tube 2 are respectively provided with a first locking pin hole and a second locking pin hole 15 corresponding to the locking pin 8. There are two of each of the first locking pin holes and the second locking pin hole 15, which are arranged through the radial direction of the outer sleeve 3. The inner sleeve 1 is provided with a high-position locking pin hole 13 and a low-position locking pin hole 7. The high-position locking pin hole 13 is located at the end of the inner sleeve 1 closer to the outer sleeve 3, and the low-position locking pin hole 7 is located at the end of the inner sleeve 1 away from the outer sleeve 3. There are two of each of the high-position locking pin holes 13 and the low-position locking pin hole 7, which are arranged through the radial direction of the inner sleeve 1.

[0028] The outer sleeve 3 is provided with a high-position observation hole 11 and a low-position observation hole 12. The high-position observation hole 11 is located at the position of the trumpet-shaped guide groove 5, and the low-position observation hole 12 is located at the end of the outer sleeve 3 away from the inner sleeve 1. The position of the positioning pin 6, i.e. whether it has been raised into place, can be observed at any time through the high-position observation hole 11 and the low-position observation hole 12.

[0029] Lifting operation: Before lifting, control the locking cylinder 4 to retract the locking pin 8, and use the lifting cylinder to lift the top layer 9 of the base. The internal sleeve 1 extends out of the guide tube 2. When the base is about to be lifted into place, the positioning pin 6 enters the flared guide groove 5. The flared guide groove 5 can correct the rotational offset caused by structural reasons. Continue to lift the base. When the positioning pin 6 reaches the bottom of the flared guide groove 5, the first locking pin hole, the second locking pin hole 15 and the high-position locking pin hole 13 are aligned. At this time, the positioning status of the positioning pin 6 can be observed through the high-position observation hole 11 to determine whether each pin hole is aligned. After confirming that the pin holes are aligned, control the locking cylinder 4 to extend the locking pin 8 to complete the high-position installation and support the base.

[0030] Lowering operation: Before lowering, control the locking cylinder 4 to retract the locking pin 8, and use the lifting cylinder to lower the top layer 9 of the base. The inner sleeve 1 slowly retracts in the guide tube 2 until the top layer 9 of the base is lowered to the lowest position. At this time, the inner sleeve 1 is retracted to the shortest state, and the bottom of the inner sleeve 1 touches the ear seat of the outer sleeve 3. At this time, the positioning can be observed through the low-position observation hole 12. After confirming that the inner sleeve 1 is retracted to the shortest state, it can be confirmed that the locking pin 8 is aligned with the low-position locking pin hole 7. Control the locking cylinder 4 to extend the locking pin 8 to complete the low-position installation and make it support the base.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A telescopic sleeve with automatic locking mechanism, comprising an inner sleeve (1) and an outer sleeve (3), characterized in that, The first end of the inner sleeve (1) is connected to the top layer (9) of the base. The second end of the inner sleeve (1) passes through the outer sleeve (3) and the inner sleeve (1) can slide along the axial direction of the outer sleeve (3). The end of the outer sleeve (3) away from the inner sleeve (1) is connected to the bottom layer (10) of the base. A guide tube (2) is fixedly connected to the end of the outer sleeve (3) near the inner sleeve (1). The guide tube (2) is located between the outer sleeve (3) and the inner sleeve (1). A locking pin is fixedly connected to the outer wall of the outer sleeve (3). The cylinder (4) is connected to the locking pin (8). The outer sleeve (3) and the guide tube (2) are respectively provided with a first locking pin hole and a second locking pin hole (15) corresponding to the locking pin (8). The inner sleeve (1) is provided with a high-position locking pin hole (13) and a low-position locking pin hole (7) adapted to the locking pin (8). The guide tube (2) is provided with a horn-shaped guide groove (5) at one end away from the inner sleeve (1). The second end of the inner sleeve (1) is provided with a positioning pin (6) adapted to the horn-shaped guide groove (5).

2. The telescopic sleeve with automatic locking mechanism according to claim 1, characterized in that, The outer sleeve (3) is provided with a cylinder connecting flange (14), and the locking cylinder (4) is connected to the outer sleeve (3) through the cylinder connecting flange (14).

3. The telescopic sleeve with automatic locking mechanism according to claim 2, characterized in that, The first locking pin hole and the second locking pin hole (15) are both provided in two places along the radial direction of the outer sleeve (3).

4. The telescopic sleeve with automatic locking mechanism according to claim 3, characterized in that, The high-position locking pin hole (13) is located at the end of the inner sleeve (1) near the outer sleeve (3), and the low-position locking pin hole (7) is located at the end of the inner sleeve (1) away from the outer sleeve (3). Both the high-position locking pin hole (13) and the low-position locking pin hole (7) are provided in two through-holes along the radial direction of the inner sleeve (1).

5. The telescopic sleeve with automatic locking mechanism according to claim 1, characterized in that, The outer sleeve (3) is provided with a high observation hole (11) and a low observation hole (12). The high observation hole (11) is located at the position of the horn-shaped guide groove (5), and the low observation hole (12) is located at the end of the outer sleeve (3) away from the inner sleeve (1).

6. A telescopic sleeve with automatic locking mechanism according to any one of claims 1-5, characterized in that, The guide tube (2) is connected to the outer sleeve (3) via an end flange (16).

7. A telescopic sleeve with automatic locking mechanism according to claim 6, characterized in that, The inner sleeve (1) is connected to the top layer (9) of the base by a pin, and the outer sleeve (3) is connected to the bottom layer (10) of the base by a pin.

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