Auxiliary device for directional drilling construction of pipeline

Abstract

The utility model belongs to the technical field of pipeline construction, and discloses a pipeline directional drilling construction auxiliary device which comprises a shell, a main shaft bonding pad is arranged at one end of the shell, and the other end of the shell is in threaded connection with a pull head. The angular contact ball bearing is embedded in one end of the shell, and the angular contact ball bearing is used for connecting the main shaft bonding pad and the shell; the thrust roller bearing is used for connecting the middle part of the inner cavity of the shell with the middle part of the outer wall of the main shaft bonding pad; and the radial ball bearing is embedded in the pull head, and the radial ball bearing is used for connecting the pull head with the main shaft bonding pad. According to the utility model, the angular contact ball bearing, the thrust roller bearing and the radial ball bearing are combined for use, so that the structure is stable, the large combined load can be borne, the requirement of dragging the pipeline can be met, and faults are not easy to occur.

Description

Technical Field

[0001] This utility model relates to the field of natural gas pipeline support and fixing technology, specifically to an auxiliary device for pipeline directional drilling construction. Background Technology

[0002] Directional drilling is a pipeline construction technique used in the engineering industry. It is generally used for the construction of oil, natural gas, and some municipal pipelines. Large directional drilling rigs are used to perform positioning drilling, hole enlargement, hole cleaning, and pipeline pullback before pipeline construction.

[0003] When dragging pipes, complex pipe laying processes are prone to failure, so there is an urgent need to provide a pipe directional drilling construction auxiliary device to solve the above problems. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the aforementioned technical problems, this utility model provides an auxiliary device for directional drilling of pipelines, thereby resolving the issues raised in the background section.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides an auxiliary device for directional drilling of pipelines, comprising:

[0008] A housing, one end of which is provided with a spindle welding pad, and the other end of which is threadedly connected with a pull head;

[0009] An angular contact ball bearing is embedded in one end of the housing, and the angular contact ball bearing is used to connect the spindle pad and the housing.

[0010] A thrust roller bearing connects the middle part of the inner cavity of the housing to the middle part of the outer wall of the spindle welding pad;

[0011] A radial ball bearing is embedded in the pull head and is used for connection between the pull head and the spindle pad.

[0012] As a further improvement to this utility model, the end sealing mechanism is used for sealing at the housing port.

[0013] As a further improvement to this utility model, the end sealing mechanism includes a bushing and a floating seal. The bushing is sleeved on the outer wall of the spindle pad, and the floating seal is located at the connection between the bushing and the housing port.

[0014] As a further improvement to this utility model, O-rings are provided on both sides of the floating seal, and the floating seal is fixed by set screws.

[0015] As a further improvement to this utility model, a large flat washer is provided in the housing, a nut is provided on the outer wall of the spindle welding pad, and the thrust roller bearing is located between the large flat washer and the nut.

[0016] As a further improvement to this utility model, the nut is provided with an oil inlet, and a plug is provided in the oil inlet.

[0017] Beneficial effects

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This utility model is equipped with an angular contact ball bearing, a thrust roller bearing, and a radial ball bearing. The angular contact ball bearing can withstand a large radial load, the radial ball bearing mainly withstands a large unidirectional axial load, and the thrust roller bearing is used to withstand axial loads and combined axial and radial loads. The combination of the three is structurally stable, can meet the requirements of dragging pipelines, and is not prone to failure.

[0020] This utility model is equipped with a bushing and a floating seal to enhance the sealing effect, and is equipped with a spindle welding pad with tapered threads and a housing for easy installation and connection. Attached Figure Description

[0021] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0023] In the above figures: 1. Spindle pad; 2. Housing; 3. Nut; 4. Pull head; 5. Large flat washer; 6. Bushing; 7. Floating seal; 8. Set screw; 9. O-ring; 10. Angular contact ball bearing; 11. Thrust roller bearing; 12. Plug; 13. Radial ball bearing. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides the following embodiments: Figures 1-2As shown, the auxiliary device for directional drilling of pipelines includes: a spindle welding plate 1, a housing 2, a pull head 4, an angular contact ball bearing 10, a thrust roller bearing 11, and a radial ball bearing 13. The spindle welding plate 1 is provided at one end of the housing 2, and the pull head 4 is threadedly connected to the other end of the housing 2. The housing 2 serves as a connector and covers most of the connecting parts, providing protection. The spindle welding plate 1 is connected to the drill rod, and the pull head 4 is connected to the pipeline with the connecting pull head.

[0026] Angular contact ball bearing 10 is embedded in one end of housing 2. Angular contact ball bearing 10 is used to connect spindle pad 1 and housing 2, in conjunction with... Figure 1 An angular contact ball bearing 10 is embedded at one end of the housing 2, and the spindle pad 1 passes through the housing 2. The angular contact ball bearing 10 can simultaneously withstand radial and axial loads and operate at high speeds. The larger the contact angle, the higher the axial load capacity.

[0027] The thrust roller bearing 11 connects the middle of the inner cavity of the housing 2 to the middle of the outer wall of the spindle welding pad 1. The thrust roller bearing 11 is used to bear the combined shaft and radial loads, which are mainly axial loads. It has a low friction coefficient, a high speed, and self-aligning performance.

[0028] The radial ball bearing 13 is embedded in the pull head 4. The radial ball bearing 13 is used to connect the pull head 4 and the spindle welding pad 1. The radial ball bearing 13 has a deep groove structure, which can withstand radial loads from any upward direction and small axial loads. The radial ball bearing with the maximum load capacity mainly bears radial loads.

[0029] As a preferred embodiment of this utility model, it also includes an end sealing mechanism, which is used to seal the port of the housing 2. Since the port of the housing 2 is used to install the spindle pad 1, it is designed as an open port and needs to be sealed during normal use.

[0030] As another preferred embodiment of this utility model, the end sealing mechanism includes a bushing 6 and a floating seal 7. The bushing 6 is sleeved on the outer wall of the spindle welding pad 1, and the floating seal 7 is located at the connection between the bushing 6 and the port of the housing 2. A groove is provided at the opening of the housing 2, and the floating seal 7 is located in the groove between the inner wall of the bushing 6 and the opening of the housing 2.

[0031] As another preferred embodiment of this utility model, O-rings 9 are provided on both sides of the floating seal 7 to increase the sealing effect. The floating seal 7 is fixed by the set screw 8. Holes for accommodating the set screw 8 are provided on the outer wall of the bushing 6 and the opening of the housing 2. The top of the set screw 8 is a hexagonal groove and the bottom of the set screw 8 is pointed. The floating seal 7 is fixed by the set screw 8.

[0032] As another preferred embodiment of this utility model, a large flat washer 5 is provided in the housing 2, a nut 3 is provided on the outer wall of the main shaft welding pad 1, and the thrust roller bearing 11 is located between the large flat washer 5 and the nut 3 to limit the thrust roller bearing 11.

[0033] As another preferred embodiment of this utility model, the nut 3 is provided with an oil injection port, there is a gap between the nut 3 and the pull head 4, and there is also a gap between the thrust roller bearing 11 and the inner wall of the housing 2. Lubricating oil is added through the oil injection port, and the lubricating oil can lubricate the centripetal ball bearing 13 and the thrust roller bearing 11. The lubricating oil can also seep into the front port of the housing 2 through the thrust roller bearing 11 to lubricate the angular contact ball bearing 10. A plug 12 is provided in the oil injection port to strengthen the sealing protection.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for assisting in the construction of a pipeline by directional drilling, characterised in that, It includes: The shell (2) is provided with a main shaft pad (1) at one end, and a puller (4) is threadedly connected at the other end of the shell (2); The angular contact ball bearing (10) is embedded in one end of the shell (2), and is used to connect the main shaft pad (1) and the shell (2); The thrust roller bearing (11) connects the middle part of the inner cavity of the shell (2) with the middle part of the outer wall of the main shaft pad (1); The radial ball bearing (13) is embedded in the puller (4), and is used to connect the puller (4) and the main shaft pad (1).

2. The pipe directional drilling construction aid of claim 1, wherein: It also includes an end sealing mechanism for sealing the port of the shell (2).

3. The pipe jacking construction aid of claim 2, wherein: The end sealing mechanism includes a gasket (6) and a floating seal (7), the gasket (6) is sleeved on the outer wall of the main shaft pad (1), and the floating seal (7) is located at the connection between the gasket (6) and the port of the shell (2).

4. The pipe jacking construction aid of claim 3, wherein: O-rings (9) are arranged on both sides of the floating seal (7), and the floating seal (7) is fixed by a set screw (8).

5. The trenchless construction aid of claim 1, wherein: A large gasket (5) is arranged in the shell (2), the outer wall of the main shaft pad (1) is provided with a nut (3), and the thrust roller bearing (11) is located between the large gasket (5) and the nut (3).

6. The pipe jacking construction aid of claim 5, wherein: An oil injection port is arranged on the nut (3), and a plug (12) is arranged in the oil injection port.

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