Double-stage intermediate rod self-locking device of drilling pump

Abstract

The utility model relates to the technical field of intermediate rod anti-loosening connection, in particular to a drilling pump two-stage intermediate rod self-locking device which comprises a first intermediate rod, a second intermediate rod, a clamping groove disc, a self-locking disc and a locking device. The clamping groove disc is fixedly connected to the end of the first intermediate rod, the clamping groove is formed in the clamping groove disc, the self-locking disc is fixedly connected to the end of the second intermediate rod, the locking device is installed on the self-locking disc, and the locking device is matched with the clamping groove to achieve one-way locking in the rotating direction of the clamping groove disc and the self-locking disc. The one-way locking direction is the releasing direction of the male and female buckle threads of the first intermediate rod and the second intermediate rod, so that the first intermediate rod and the second intermediate rod cannot be released reversely after being installed, the connection of the first intermediate rod and the second intermediate rod is very stable, and the occurrence of a buckle sliding event in the connection of the intermediate rods is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of medium rod anti-loosening connection, especially to a double-stage medium rod self-locking device for a drilling pump. BACKGROUND

[0002] With the continuous exploration of deep engineering drilling, the pump pressure and displacement requirements of the drilling pump are continuously improved in drilling construction. The existing 2200 and 2400 type drilling pumps have double-stage medium rod connection. During use, the medium rod connection slip event occurs frequently, causing drilling pump circulation failure and other problems, resulting in complex downhole events, high labor intensity, low work efficiency, and great safety risks.

[0003] In order to ensure the stability of the double-stage medium rod connection and avoid the medium rod connection slip event, the utility model provides a double-stage medium rod self-locking device applied to a drilling pump. UTILITY MODEL CONTENTS

[0004] The utility model discloses a double-stage medium rod self-locking device for a drilling pump, which is proposed to solve the problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The double-stage medium rod self-locking device for a drilling pump comprises a first medium rod and a second medium rod.

[0007] The end portion of the first medium rod is fixedly connected with the end portion of the second medium rod through male-female thread cooperation.

[0008] The end portion of the second medium rod is fixedly connected with a self-locking disc.

[0009] The end portion of the self-locking disc is provided with a strip-shaped hole.

[0010] The one-way locking direction of the self-locking disc and the first medium rod and the second medium rod is the same as the tripping direction of the male-female thread.

[0011] The plurality of card slots are arranged in an annular array.

[0012] The utility model discloses a double-stage medium rod self-locking device for a drilling pump.

[0013] The locking device comprises:

[0014] The first connecting seat is fixedly connected to the top of the self-locking disc;

[0015] The brake frame comprises a linkage arm, the two ends of the linkage arm are fixedly connected with a triangular arm and a tail arm respectively, the linkage arm is rotationally connected with the first connecting seat through a first pin, and the triangular arm is located on the inner side of the strip-shaped hole;

[0016] The torsion spring is sleeved on the first pin, and the first end of the torsion spring is fixedly connected with the brake frame, and the second end of the torsion spring is fixedly connected with the second vertical plate of the first connecting seat.

[0017] As a further description of the above technical solution:

[0018] The second connecting seat is fixedly connected with the top of the self-locking disc, and the second connecting seat is located on one side of the tail arm, the side surface of the second connecting seat is provided with a through hole corresponding to the second pin, and when the second pin is inserted into the through hole in the side surface of the second connecting seat, the second pin presses down the tail arm, so that the triangular arm is lifted up.

[0019] As a further description of the above technical solution:

[0020] The end of the first intermediate rod is provided with a threaded female buckle, the end of the second intermediate rod is fixedly connected with a threaded male buckle, and the threaded male buckle is threadedly matched with the threaded female buckle.

[0021] As a further description of the above technical solution:

[0022] The side surface of the first intermediate rod is provided with a first square groove.

[0023] As a further description of the above technical solution:

[0024] The side surface of the second intermediate rod is provided with a second square groove.

[0025] The drilling pump double-stage intermediate rod self-locking device has the following beneficial effects:

[0026] 1. Compared with the prior art, the drilling pump double-stage intermediate rod self-locking device has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A three-dimensional schematic view of a two-stage intermediate rod self-locking device of a drilling pump provided by the present application is shown in the figure.

[0028] Figure 2 A three-dimensional schematic view of a first intermediate rod of a two-stage intermediate rod self-locking device of a drilling pump provided by the present application is shown in the figure.

[0029] Figure 3 A three-dimensional schematic view of a second intermediate rod of a two-stage intermediate rod self-locking device of a drilling pump provided by the present application is shown in the figure.

[0030] Figure 4 A three-dimensional schematic view of a second intermediate rod of a two-stage intermediate rod self-locking device of a drilling pump provided by the present application is shown in the figure.

[0031] Figure 5 A three-dimensional schematic view of a second intermediate rod of a two-stage intermediate rod self-locking device of a drilling pump provided by the present application is shown in the figure. Figure 4 A local enlarged view of A in the figure.

[0032] Legend:

[0033] 1, first intermediate rod; 101, first square groove; 2, second intermediate rod; 201, second square groove; 3, threaded female buckle; 4, clamping groove disc; 5, clamping groove; 6, self-locking disc; 7, threaded male buckle; 8, strip-shaped hole; 9, brake frame; 901, triangular arm; 902, linkage arm; 903, tail arm; 10, first connecting seat; 10a, first vertical plate; 10b, second vertical plate; 11, first pin; 12, torsion spring; 13, second connecting seat; 14, second pin. DETAILED DESCRIPTION

[0034] With reference to Figures 1-5 The two-stage intermediate rod self-locking device of the drilling pump provided by the present application comprises a first intermediate rod 1 and a second intermediate rod 2. The end of the first intermediate rod 1 is installed in threaded cooperation with the end of the second intermediate rod 2, for example, the end of the first intermediate rod 1 is provided with a threaded female buckle 3, and the end of the second intermediate rod 2 is fixedly connected with a threaded male buckle 7. The threaded male buckle 7 is in threaded cooperation with the threaded female buckle 3, so that the threaded installation of the first intermediate rod 1 and the second intermediate rod 2 can be realized.

[0035] The end of the first intermediate rod 1 is fixedly connected with a clamping groove disc 4, the end of the clamping groove disc 4 is provided with clamping grooves 5, the clamping grooves 5 are arranged in an annular array, for example, 36 clamping grooves 5 can be designed, the end of the second intermediate rod 2 is fixedly connected with a self-locking disc 6, the end of the self-locking disc 6 is provided with a strip-shaped hole 8, the end of the self-locking disc 6 away from the clamping groove disc 4 is provided with a locking device, the working end of the locking device is located on the inner side of the strip-shaped hole 8 and cooperates with the clamping grooves 5, the locking device cooperates with the clamping grooves 5 to realize one-way locking of the rotating direction of the clamping groove disc 4 and the self-locking disc 6, that is, the clamping groove disc 4 and the self-locking disc 6 can only rotate in one direction, the one-way locking direction of the locking device and the clamping grooves 5 to the clamping groove disc 4 and the self-locking disc 6 is the same as the unlocking direction of the male and female thread of the first intermediate rod 1 and the second intermediate rod 2, that is, when the first intermediate rod 1 and the second intermediate rod 2 are normally threaded, the clamping groove disc 4 rotates with the first intermediate rod 1, the self-locking disc 6 rotates with the second intermediate rod 2, and the clamping groove disc 4 and the self-locking disc 6 can rotate in this direction, which can facilitate the normal threaded installation of the first intermediate rod 1 and the second intermediate rod 2; but when the first intermediate rod 1 and the second intermediate rod 2 are unlocked, the clamping groove disc 4 rotates with the first intermediate rod 1, the self-locking disc 6 rotates with the second intermediate rod 2, and the clamping groove disc 4 and the self-locking disc 6 cannot rotate in this direction, thereby limiting the unlocking of the first intermediate rod 1 and the second intermediate rod 2, making the first intermediate rod and the second intermediate rod very stable after being connected, avoiding the intermediate rod (the first intermediate rod 1 and the second intermediate rod 2) connection slip event, meeting the safety production needs, ensuring the continuity of enterprise production, reducing the equipment inspection and maintenance and labor intensity, and improving the work efficiency.

[0036] Specifically, the locking device comprises a first connecting seat 10, a brake frame 9 and a torsion spring 12.

[0037] The first connecting seat 10 is fixedly connected to the top of the self-locking disc 6, and has a first vertical plate 10a and a second vertical plate 10b which are spaced apart, and the brake frame 9 is rotationally connected to the first connecting seat 10 through a first pin 11, that is, the brake frame 9 is located between the first vertical plate 10a and the second vertical plate 10b, and the brake frame 9 comprises a linkage arm 902, a triangular arm 901 and a tail arm 903, the two ends of the linkage arm 902 are fixedly connected to the triangular arm 901 and the tail arm 903 respectively, the triangular arm 901 is located on the inner side of the strip-shaped hole 8, that is, the triangular arm 901 is the acting end of the stopper device, the spacing between the first vertical plate 10a and the second vertical plate 10b is set to be slightly wider, so that the brake frame 9 is located on the inner side of the first vertical plate 10a and the second vertical plate 10b and is close to the first vertical plate 10a, and a space for installing a torsion spring 12 is left between the second vertical plate 10b and the brake frame 9, the torsion spring 12 is sleeved on the first pin 11, and a first end of the torsion spring 12 is fixedly connected to the brake frame 9, and a second end of the torsion spring 12 is fixedly connected to the second vertical plate 10b of the first connecting seat 10, the torsion spring 12 generates a torsion spring force, so that the brake frame 9 has an automatic return function, that is, the torsion spring force generated by the torsion spring 12 makes the brake frame 9 have a rotating trend, so that the triangular arm 901 is close to the clamping groove disc 4.

[0038] The stopper device further comprises a second connecting seat 13 and a second pin 14.

[0039] The second connecting seat 13 is fixedly connected to the top of the self-locking disc 6, and is located on one side of the tail arm 903, and a through hole corresponding to the second pin 14 is formed in the side surface of the second connecting seat 13, when the second pin 14 is inserted into the through hole in the side surface of the second connecting seat 13, the second pin 14 presses downward on the tail arm 903, so that the triangular arm 901 is raised.

[0040] Before the first intermediate rod 1 and the second intermediate rod 2 are disassembled, the tail arm 903 needs to be pressed downward (overcoming the elastic force of the torsion spring 12), so that the triangular arm 901 is raised upward, the triangular arm 901 is away from the clamping groove 5 of the clamping groove disc 4, then the second pin 14 is inserted, and the position of the brake frame 9 is maintained, at this time, the first intermediate rod 1 and the second intermediate rod 2 can be rotated, and the first intermediate rod 1 and the second intermediate rod 2 are threadedly disassembled.

[0041] A first square groove 101 is formed in the side surface of the first intermediate rod 1, and a second square groove 201 is formed in the side surface of the second intermediate rod 2, and a wrench (or a clamping tool) can be used to rotate the first intermediate rod 1 and the second intermediate rod 2 in the first square groove 101 and the second square groove 201.

[0042] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A two-stage intermediate rod self-locking device of a drilling pump, comprising a first intermediate rod (1) and a second intermediate rod (2), the end of the first intermediate rod (1) and the end of the second intermediate rod (2) are installed in a male-female threaded connection, characterized in that: The end of the first intermediate rod (1) is fixedly connected with a clamping groove disc (4) outside the edge of the second intermediate rod (2), and the clamping groove disc (4) is provided with a clamping groove (5) towards the end of the second intermediate rod (2). The end of the second intermediate rod (2) is fixedly connected with a self-locking disc (6) outside the edge of the first intermediate rod (1), the end of the self-locking disc (6) is provided with a strip-shaped hole (8), and the end of the self-locking disc (6) away from the clamping groove disc (4) is provided with a locking device, the acting end of the locking device is located inside the strip-shaped hole (8) and cooperates with the clamping groove (5), and the locking device cooperates with the clamping groove (5) to realize one-way locking of the rotating direction of the clamping groove disc (4) and the self-locking disc (6). The one-way locking direction of the locking device and the clamping groove (5) to the clamping groove disc (4) and the self-locking disc (6) is the same as the unlocking direction of the male and female thread of the first intermediate rod (1) and the second intermediate rod (2).

2. The dual stage intermediate lever self-locking device of a drilling pump according to claim 1, characterized in that: The clamping groove (5) is provided with a plurality of clamping grooves (5) arranged in an annular array.

3. The dual stage intermediate lever self-locking device of a drilling pump according to claim 1, characterized in that, The locking device comprises: A first connecting seat (10) is fixedly connected to the top of the self-locking disc (6); A brake frame (9) comprises a linkage arm (902), the two ends of the linkage arm (902) are respectively fixedly connected with a triangular arm (901) and a tail arm (903), the linkage arm (902) is rotatably connected to the first connecting seat (10) through a first pin (11), and the triangular arm (901) is located inside the strip-shaped hole (8); A torsion spring (12) is sleeved on the first pin (11), and the first end of the torsion spring (12) is fixedly connected with the brake frame (9), and the second end of the torsion spring (12) is fixedly connected with a second vertical plate (10b) of the first connecting seat (10).

4. The dual stage intermediate lever self-locking device of the drilling pump according to claim 3, characterized in that, Further comprising: A second connecting seat (13) and a second pin (14) are fixedly connected to the top of the self-locking disc (6), and the second connecting seat (13) is located on one side of the tail arm (903), the side surface of the second connecting seat (13) is provided with a through hole corresponding to the second pin (14), when the second pin (14) is inserted into the through hole in the side surface of the second connecting seat (13), the second pin (14) presses down the tail arm (903), so that the triangular arm (901) is raised.

5. The dual stage intermediate lever self-locking device of a drilling pump according to claim 1, characterized in that: The end of the first intermediate rod (1) is provided with a threaded female buckle (3), the end of the second intermediate rod (2) is fixedly connected with a threaded male buckle (7), and the threaded male buckle (7) is threadedly connected with the threaded female buckle (3).

6. The dual stage intermediate lever self-locking device of a drilling pump according to claim 1, characterized in that: The side surface of the first intermediate rod (1) is provided with a first square groove (101).

7. The dual stage intermediate lever self-locking device of a drilling pump according to claim 1, characterized in that: The side surface of the second intermediate rod (2) is provided with a second square groove (201).

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