A locking mechanism for expansion joint of oil steel pipe

Abstract

The utility model belongs to telescopic joint locking technical field discloses a kind of telescopic joint locking mechanism for petroleum steel pipe stability, including outer locking ring, connecting piece, locking inner tube and baffle, the accommodating space is formed in the inside of outer locking ring, the connecting piece and locking inner tube are set in the inside of outer locking ring, the locking inner tube is movably inserted in the inside of connecting piece, the outer locking ring is fixedly connected with the locking inner tube by fixed pin, the baffle is set in the inner end surface of outer locking ring, the baffle is fixedly connected with the connecting piece by screw.The utility model in the quick insertion of outer locking ring and locking inner tube by fixed pin is set, in combination with the screw fixing mode of baffle and connecting piece, the modular assembly of telescopic joint locking mechanism is realized, locking and unlocking can be completed by only inserting or pulling out fixed pin, without disassembling multiple fasteners one by one, avoid the delay of operation caused by operation time-consuming too long.

Description

Technical Field

[0001] This utility model belongs to the field of expansion joint locking technology, specifically relating to an expansion joint locking mechanism for stabilizing oil steel pipes. Background Technology

[0002] In the installation and use of oil steel pipes, in order to ensure the stability and safety of the steel pipes under complex working conditions, expansion joint locking mechanisms are often used to adjust and fix the relative position of the steel pipes.

[0003] The existing telescopic joint locking mechanism uses an outer locking ring, a locking inner cylinder, and connecting parts to achieve a rigid connection through multiple bolts. However, its assembly and disassembly process requires tools to operate multiple fasteners one by one, which is complicated and time-consuming. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a telescopic joint locking mechanism for stabilizing oil steel pipes. It realizes the modular assembly of the telescopic joint locking mechanism, and locking and unlocking can be completed by simply inserting or pulling out the fixing pin. There is no need to disassemble multiple fasteners one by one, thus avoiding operation delays caused by excessive operation time.

[0005] The technical solution of this utility model is: a telescopic joint locking mechanism for stabilizing oil steel pipes, including an outer locking ring, a connecting piece, a locking inner cylinder and a baffle. The outer locking ring has an internal accommodating space. The connecting piece and the locking inner cylinder are disposed inside the outer locking ring. The locking inner cylinder is movably inserted into the connecting piece. The outer locking ring and the locking inner cylinder are fixedly connected by a fixing pin.

[0006] The baffle is disposed on the inner end face of the outer locking ring, and the baffle is fixedly connected to the connecting member by screws.

[0007] Furthermore, the outer locking ring includes a ring body, and the inner sidewall of the ring body is provided with a plurality of raised ring strips at equal intervals around the circumference. The raised ring strips are flush with the outer end face of the ring body. The inner sidewall of the ring body is provided with circular rings at equal intervals around the circumference. The circular rings are flush with the inner end face of the ring body.

[0008] Furthermore, the locking inner cylinder includes an inner cylinder body, the outer side wall of the inner cylinder body is provided with an outer flange, and the outer side wall of the outer flange is circumferentially and equidistantly connected with a plurality of raised ring strips three, the raised ring strips three abutting against the inner side wall of the raised ring strip one.

[0009] Furthermore, a first locking hole is provided in the middle of one side of the raised ring, and a second locking hole is provided in the middle of the three sides of the raised ring. The fixing pin is movably inserted into the first locking hole and the second locking hole.

[0010] Furthermore, the connector includes a middle cylinder, one end of which is fixedly connected to an outer cylinder. The outer side wall of the outer cylinder is fixedly connected with a plurality of raised ring strips two at equal intervals around the circumference. The outer end face of the raised ring strips two abuts against the raised ring strip three, and the inner end face of the raised ring strips two abuts against the ring.

[0011] Furthermore, the inner end face of the outer cylinder is provided with a plurality of fixing holes at equal intervals around the circumference, and the side of the baffle is provided with through holes at equal intervals around the circumference. One end of the screw passes through the through hole and is threaded into the fixing hole.

[0012] Furthermore, the other end of the outer cylinder extends to the outside of the ring, and the outer wall of the other end of the outer cylinder is provided with an outer ring.

[0013] Furthermore, the outer end face of the ring is circumferentially fixedly connected with multiple support plates, and the support plates are provided with strip grooves for the fixing pins to pass through.

[0014] Furthermore, a chain is fixedly connected to the outer end face of the ring, and one of the fixing pins is fixedly connected to one end of the chain.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0016] 1. In this application, the outer locking ring and the inner locking cylinder are quickly connected by a fixing pin. Combined with the screw fixing method of the baffle and the connecting parts, the modular assembly of the telescopic joint locking mechanism is realized. Locking and unlocking can be completed by simply inserting or pulling out the fixing pin. There is no need to disassemble multiple fasteners one by one, which avoids the operation delay caused by excessive operation time.

[0017] 2. In this application, the raised ring strip 1 and the circular ring provided on the inner side wall of the outer locking ring form a multi-level abutment fit with the raised ring strip 3 on the outer side wall of the locking inner cylinder. At the same time, the raised ring strip 2 of the connecting piece further fills the contact gap. This structure reduces the single force intensity by distributing the load to multiple contact surfaces and avoids the locking failure problem in traditional designs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional view of the structure of this utility model from a frontal perspective;

[0020] Figure 2This is a three-dimensional view of the structure of this utility model from the rear view.

[0021] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0022] Figure 4 This is a perspective view of the external locking ring structure of this utility model;

[0023] Figure 5 This is a three-dimensional view of the connector structure from the front.

[0024] Figure 6 This is a three-dimensional view of the connector structure from the rear.

[0025] Figure 7 This is a perspective view of the locking inner cylinder structure of this utility model.

[0026] In the attached diagram: 10. Outer locking ring; 11. Ring body; 12. Raised ring bar one; 13. First locking hole; 14. Circular ring; 20. Connector; 21. Middle cylinder body; 22. Outer cylinder body; 23. Raised ring bar two; 24. Fixing hole; 25. Outer ring body; 30. Locking inner cylinder; 31. Inner cylinder body; 32. Outer flange; 33. Raised ring bar three; 34. Second locking hole; 40. Fixing pin; 50. Baffle; 60. Support plate; 70. Chain. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, a telescopic joint locking mechanism for stabilizing oil steel pipes includes an outer locking ring 10, a connecting piece 20, a locking inner cylinder 30, and a baffle 50. The outer locking ring 10 has an internal accommodating space. The connecting piece 20 and the locking inner cylinder 30 are disposed inside the outer locking ring 10. The locking inner cylinder 30 is movably inserted into the connecting piece 20. The outer locking ring 10 and the locking inner cylinder 30 are fixedly connected by a fixing pin 40.

[0029] The baffle 50 is located on the inner end face of the outer locking ring 10, and the baffle 50 and the connecting piece 20 are fixedly connected by screws. By adopting the setting of quick insertion and connection between the outer locking ring 10 and the locking inner cylinder 30 through the fixing pin 40, combined with the screw fixing method of the baffle 50 and the connecting piece 20, the modular assembly of the telescopic joint locking mechanism is realized. Locking and unlocking can be completed by simply inserting or pulling out the fixing pin 40, without the need to disassemble multiple fasteners one by one, thus avoiding operation delays caused by excessive operation time.

[0030] like Figure 4 As shown, the outer locking ring 10 includes a ring body 11. The inner sidewall of the ring body 11 is provided with a plurality of protruding ring strips 12 at equal intervals around the circumference. The protruding ring strips 12 are flush with the outer end face of the ring body 11. The inner sidewall of the ring body 11 is provided with circular rings 14 at equal intervals around the circumference. The circular rings 14 are flush with the inner end face of the ring body 11.

[0031] like Figure 7 As shown, the locking inner cylinder 30 includes an inner cylinder body 31. The outer wall of the inner cylinder body 31 is provided with an outer flange 32. Multiple raised ring bars 33 are circumferentially and equidistantly fixed to the outer wall of the outer flange 32. The raised ring bars 33 abut against the inner wall of the raised ring bars 12. A first locking hole 13 is provided in the center of the side of the raised ring bar 12, and a second locking hole 34 is provided in the center of the side of the raised ring bars 33. A fixing pin 40 is movably inserted into the first locking hole 13 and the second locking hole 34.

[0032] like Figure 5 and Figure 6 As shown, the connector 20 includes a middle cylinder 21, one end of which is fixedly connected to an outer cylinder 22. Multiple raised rings 23 are circumferentially and equidistantly fixed to the outer wall of the outer cylinder 22. The outer end face of each raised ring 23 abuts against a raised ring 33, and the inner end face of each raised ring 23 abuts against a ring 14. Multiple fixing holes 24 are circumferentially and equidistantly provided on the inner end face of the outer cylinder 22. Through holes are circumferentially and equidistantly provided on the side of the baffle 50. One end of a screw passes through the through hole and is threaded into the fixing hole 24. The other end of the outer cylinder 22 extends to the outside of the ring 11, and an outer ring 25 is provided on the outer wall of the other end of the outer cylinder 22.

[0033] In this embodiment, the raised ring strip 12 and the ring 14 provided on the inner side wall of the outer locking ring 10 form a multi-level abutment fit with the raised ring strip 33 on the outer side wall of the locking inner cylinder 30. At the same time, the raised ring strip 23 of the connector 20 further fills the contact gap. This structure reduces the single force intensity by distributing the load to multiple contact surfaces and avoids the locking failure problem in traditional designs.

[0034] In addition, such as Figure 1 and Figure 3As shown, to facilitate the fixing of the fixing pin 40, multiple support plates 60 are circumferentially and equidistantly fixed to the outer end face of the ring body 11. The support plates 60 are provided with strip grooves for the fixing pin 40 to pass through. In addition, the support plates 60 can also limit the range of movement of the fixing pin 40, ensuring the stability of the fixing pin 40 installation.

[0035] like Figure 1 and Figure 3 As shown, a chain 70 is fixedly connected to the outer end face of the ring 11, and a fixing pin 40 is fixedly connected to one end of the chain 70. The chain 70 can prevent the fixing pin 40 from being lost. When the fixing pin 40 is disassembled, the fixing pin 40 can be suspended on the ring 11 by the chain 70, which facilitates the storage and use of the fixing pin 40.

[0036] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hirth lock mechanism for stabilizing a petroleum steel pipe, comprising an outer lock ring (10), a connecting member (20), a lock inner cylinder (30), and a baffle (50), characterized in that, The outer locking ring (10) has an internal accommodating space. The connector (20) and the locking inner cylinder (30) are disposed inside the outer locking ring (10). The locking inner cylinder (30) is movably inserted into the connector (20). The outer locking ring (10) and the locking inner cylinder (30) are fixedly connected by a fixing pin (40). The baffle (50) is disposed on the inner end face of the outer locking ring (10), and the baffle (50) and the connector (20) are fixedly connected by screws.

2. The expansion joint locking mechanism for the stabilization of oil steel pipes as claimed in claim 1, characterized in that, The outer locking ring (10) includes a ring body (11). The inner wall of the ring body (11) is provided with a plurality of raised ring strips (12) at equal intervals around the circumference. The raised ring strips (12) are flush with the outer end face of the ring body (11). The inner wall of the ring body (11) is provided with a circular ring (14) at equal intervals around the circumference. The circular ring (14) is flush with the inner end face of the ring body (11).

3. The expansion joint locking mechanism for the stabilization of oil steel pipes according to claim 2, characterized in that, The locking inner cylinder (30) includes an inner cylinder body (31). The outer side wall of the inner cylinder body (31) is provided with an outer flange (32). The outer side wall of the outer flange (32) is circumferentially and equidistantly connected with a plurality of raised ring bars three (33). The raised ring bars three (33) abut against the inner side wall of the raised ring bar one (12).

4. The expansion joint locking mechanism for stabilizing oil steel pipes as described in claim 3, characterized in that, The first locking hole (13) is provided in the middle of the side of the first protruding ring (12), and the second locking hole (34) is provided in the middle of the side of the third protruding ring (33). The fixing pin (40) is movably inserted into the first locking hole (13) and the second locking hole (34).

5. The expansion joint locking mechanism for stabilizing oil steel pipes as described in claim 4, characterized in that, The connector (20) includes a middle cylinder (21), one end of which is fixedly connected to an outer cylinder (22). The outer side wall of the outer cylinder (22) is fixedly connected with a plurality of raised ring strips (23) at equal intervals around the circumference. The outer end face of the raised ring strip (23) abuts against the raised ring strip (33), and the inner end face of the raised ring strip (23) abuts against the ring (14).

6. The expansion joint locking mechanism for stabilizing oil steel pipes as described in claim 5, characterized in that, The inner end face of the outer cylinder (22) is provided with a plurality of fixing holes (24) at equal intervals around the circumference, and the side of the baffle (50) is provided with through holes at equal intervals around the circumference. One end of the screw passes through the through hole and is threaded into the fixing hole (24).

7. The expansion joint locking mechanism for stabilizing oil steel pipes as described in claim 6, characterized in that, The other end of the outer cylinder (22) extends to the outside of the ring (11), and the outer side wall of the other end of the outer cylinder (22) is provided with an outer ring (25).

8. The expansion joint locking mechanism for stabilizing oil steel pipes as described in claim 7, characterized in that, The outer end face of the ring (11) is fixedly connected with multiple support plates (60) at equal intervals around the circumference, and the support plates (60) are provided with strip grooves for the fixing pins (40) to pass through.

9. The expansion joint locking mechanism for stabilizing oil steel pipes as described in claim 6, characterized in that, A chain (70) is fixedly connected to the outer end face of the ring (11), and one of the fixing pins (40) is fixedly connected to one end of the chain (70).

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