A bearing assembly that maintains the center of gravity within a horizontal gun

Abstract

The utility model discloses a bearing accessory that keeps the internal gravity center of horizontal gun, including the cartridge holder pipe, the end portion of cartridge holder pipe is equipped with the deep groove ball bearing, the end portion of cartridge holder pipe still is equipped with the bearing baffle ring for shaft, the outer wall of deep groove ball bearing is equipped with the annular connecting seat, and the clearance between cartridge holder pipe and annular connecting seat is equipped with the shielding subassembly, and the annular connecting seat between two cartridge holder pipe end portions is connected through a plurality of connecting screws, and the shielding subassembly includes annular groove, fixed ring, annular shielding ring, elastic resistance piece, the utility model relates to horizontal gun technical field, through setting up the annular shielding ring of shielding subassembly and covering the clearance between cartridge holder pipe and annular connecting seat, and through the elastic resistance piece and the outer ring inner wall of annular groove are touched, realized completely to prevent the granular foreign matter such as oxide scale and rust on the inner wall and enters the bearing in the process of assembling, transportation, work, avoided the situation that causes bearing to jam, failure, cannot rotate freely in the pipe.

Description

Technical Field

[0001] This utility model relates to the field of horizontal gun technology, specifically to a bearing component that maintains the internal center of gravity of a horizontal gun. Background Technology

[0002] In the oilfield market, horizontal perforating guns utilize gravity-driven eccentric self-orienting perforations. Pre-drilled perforation holes with fixed angles are mounted on the cartridge holder, and internal components such as bearings and counterweights maintain this angle. Conventional horizontal perforating equipment consists of short guns connected in series, with a length not exceeding 1200mm. The locations where they mate with the bearings require machining to ensure a tight fit and accurate perforation positioning downhole.

[0003] However, when existing horizontal guns are fixed to the magazine via bearings, they rub against the inner wall during assembly into the gun body. Oxide scale and rust on the inner wall can enter the bearings during the assembly process, causing the bearings to jam and fail, preventing them from rotating freely inside the tube. Therefore, a bearing accessory is provided to maintain the center of gravity inside the horizontal gun. Utility Model Content

[0004] The purpose of this invention is to provide a bearing component that maintains the internal center of gravity of a horizontal gun, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bearing accessory for maintaining the internal center of gravity of a horizontal gun, comprising a magazine tube, wherein a deep groove ball bearing is sleeved at the end of the magazine tube, and a shaft bearing retaining ring for mounting the deep groove ball bearing is also provided at the end of the magazine tube, wherein an annular connecting seat is provided on the outer wall of the deep groove ball bearing, and a shielding component is provided at the gap between the magazine tube and the annular connecting seat.

[0006] The shielding assembly includes an annular groove disposed on an annular connecting seat, a fixing ring disposed on the spring holder tube, an annular shielding ring threadedly connected to the fixing ring and capable of extending into the annular groove, and an elastic abutting member disposed on the outer wall of the annular shielding ring capable of abutting against the inner wall of the outer ring of the annular groove.

[0007] The two spring rack tubes are connected by several connecting screws at their ends. The connecting screws are located inside the annular groove, and a gap is left between the two spring rack tubes after the two annular connecting seats are connected.

[0008] Preferably, the cross-section of the annular shielding ring is L-shaped, the inner wall of the horizontal section of the annular shielding ring is threadedly connected to the fixing ring, the outer wall of the horizontal section of the annular shielding ring is fixedly connected to the elastic abutment, and the vertical section of the annular shielding ring is provided with a sealing ring, which can abut and seal with the end of the fixing ring.

[0009] Preferably, the elastic abutment is configured as an elastic rubber body with a U-shaped cross-section, and the end of the elastic rubber body has an abutment protrusion.

[0010] Preferably, a dustproof foot pad is provided between the two annular connecting seats.

[0011] Preferably, the outer wall of the annular shielding ring is provided with a hand-held portion.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a bearing accessory for maintaining the internal center of gravity of a horizontal gun. A shielding component is set at the gap between the magazine tube and the annular connecting seat. The annular shielding ring covers the gap between the magazine tube and the annular connecting seat, and the elastic contacting element abuts against the inner wall of the outer ring groove. This completely prevents particulate foreign objects such as oxide scale and rust on the inner wall from entering the bearing during assembly, transportation, and operation, thus avoiding the situation where the bearing jams, fails, and cannot rotate freely inside the tube. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0014] Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A.

[0015] In the diagram: 1. Spring holder tube; 2. Deep groove ball bearing; 3. Shaft bearing retaining ring; 4. Annular connecting seat; 5. Shielding assembly; 51. Annular groove; 52. Retaining ring; 53. Annular shielding ring; 54. Elastic abutment; 55. Sealing ring; 56. Handle; 6. Connecting screw; 7. Dustproof foot pad. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-2This utility model provides a technical solution: a bearing accessory for maintaining the internal center of gravity of a horizontal gun, including a magazine tube 1, which serves as the main support structure of the horizontal gun. Its end has a mounting platform for installing a deep groove ball bearing 2. The deep groove ball bearing 2 is fitted onto the end of the magazine tube 1, providing rotational freedom for the magazine tube 1 and maintaining the internal center of gravity balance of the horizontal gun. The end of the magazine tube 1 also has a axial bearing retaining ring 3 for installing the deep groove ball bearing 2. The axial bearing retaining ring 3 cooperates with the end of the magazine tube 1 to position the deep groove ball bearing 2, preventing axial displacement and ensuring stable installation. The outer wall of the deep groove ball bearing 2 has an annular connecting seat 4, which connects the ends of two magazine tubes 1 to form an integral structure. Simultaneously, the annular connecting seat 4 and... The fit between the tube walls ensures that the annular connecting seat 4 does not rotate, while the spring holder tube 1 can rotate freely. A shielding component 5 is provided in the gap between the spring holder tube 1 and the annular connecting seat 4. The design of the shielding component 5 protects the deep groove ball bearing 2. The annular connecting seats 4 at the ends of the two spring holder tubes 1 are connected by several connecting screws 6. The several connecting screws 6 connect the annular connecting seats 4 of the two spring holder tubes 1 to ensure structural stability. After the two annular connecting seats 4 are connected, a gap is left between the two spring holder tubes 1. The shielding component 5 is set in the gap between the spring holder tube 1 and the annular connecting seat 4 to completely prevent particulate foreign objects such as oxide scale and rust on the inner wall from entering the bearing during assembly, transportation and operation, avoiding the situation where the bearing is stuck, fails and cannot rotate freely inside the tube.

[0018] Specifically, the shielding component 5 includes an annular groove 51 disposed on the annular connecting seat 4. The annular groove 51 provides space for the shielding component 5 to be embedded. The connecting screw 6 is located inside the annular groove 51, ensuring that the connecting screw 6 is protected in a sealed space and preventing foreign objects from contacting the connecting screw. The cartridge tube 1 is provided with a fixing ring 52, which is fixed to the outer wall end of the cartridge tube 1. The outer wall of the fixing ring 52 has external threads. An annular shielding ring 53 that can extend into the annular groove 51 is threaded onto the fixing ring 52. The inner wall of the annular shielding ring 53 has internal threads. After the retaining ring 53 is screwed into the fixing ring 52, it extends into the annular groove 51, covering the gap between the spring holder tube 1 and the annular connecting seat 4. The outer wall of the annular retaining ring 53 is provided with an elastic contact member 54 that can abut against the inner wall of the outer ring of the annular groove 51. When the annular retaining ring 53 is screwed into place, the elastic contact member 54 is tightly attached to the inner wall of the outer ring of the annular groove 51, realizing dynamic filling of the radial gap between the annular groove 51 and the retaining ring 53, preventing particulate matter from penetrating. By setting the retaining component 5, it is possible to completely prevent particulate foreign matter such as oxide scale and rust on the inner wall from entering the bearing during assembly, transportation and operation.

[0019] Specifically, the cross-section of the annular shielding ring 53 is L-shaped, consisting of a horizontal section parallel to the axis of the spring holder tube 1 and a vertical section perpendicular to the axis of the spring holder tube 1. The inner wall of the horizontal section of the annular shielding ring 53 is threadedly connected to the fixing ring 52. The threaded connection between the annular shielding ring 53 and the fixing ring 52 facilitates disassembly, cleaning, or replacement of damaged parts. The outer wall of the horizontal section of the annular shielding ring 53 is fixedly connected to the elastic abutment member 54. The elastic abutment member 54 is fixed to the outer wall of the horizontal section by an interference fit. The vertical section of the annular shielding ring 53 is provided with a sealing ring 55, which can abut against the end of the fixing ring 52 to form an axial sealing interface.

[0020] Specifically, the elastic contact 54 is configured as an elastic rubber body with a U-shaped cross-section. The elastic contact 54 can be made of nitrile rubber (NBR) or fluororubber (FKM), and the end of the elastic rubber body has a contact protrusion. When the annular shielding ring 53 is screwed in, the U-shaped elastic rubber body is compressed, and the contact protrusion at its end presses tightly against the inner wall of the outer ring of the annular groove 51. The elastic deformation compensates for the processing tolerance and vibration offset, and always maintains the radial sealing pressure to prevent particulate matter from entering the annular groove 51.

[0021] Specifically, a dustproof foot pad 7 is provided between the two annular connecting seats 4. The dustproof foot pad 7 is made of nitrile material to achieve a seal when the two annular connecting seats 4 are connected.

[0022] Specifically, the outer wall of the annular shielding ring 53 is provided with a handle 56, which facilitates the operator to rotate and install the device.

[0023] Working principle: During operation and installation, the annular connecting seat 4 is interference-fitted with the deep groove ball bearing 2, and the deep groove ball bearing 2 is sleeved on the end of the spring holder tube 1. The shaft bearing retaining ring 3 is installed to install the deep groove ball bearing 2. The annular connecting seats 4 at the ends of the two spring holder tubes 1 are fitted together and connected by the connecting screws 6. The annular retaining ring 53 is rotated and inserted into the annular groove 51, so that the sealing ring 55 and the end face of the fixed ring 52 establish an axial static seal. At the same time, the elastic contact member 54 is squeezed and deformed by the annular groove 51, and the contact protrusion generates initial radial pressure, forming a dynamic seal.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0026] 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 bearing fitting for maintaining the internal center of gravity of a horizontal gun, characterized in that, The device includes a spring holder tube (1), a deep groove ball bearing (2) is sleeved at the end of the spring holder tube (1), a shaft bearing retainer ring (3) for installing the deep groove ball bearing (2) is also provided at the end of the spring holder tube (1), an annular connecting seat (4) is provided on the outer wall of the deep groove ball bearing (2), and a shielding component (5) is provided in the gap between the spring holder tube (1) and the annular connecting seat (4). The shielding assembly (5) includes an annular groove (51) disposed on an annular connecting seat (4), a fixing ring (52) is provided on the spring holder tube (1), and an annular shielding ring (53) that can extend into the annular groove (51) is threadedly connected to the fixing ring (52). An elastic abutment (54) that can abut against the inner wall of the outer ring of the annular groove (51) is provided on the outer wall of the annular shielding ring (53). Among them, the annular connecting seats (4) at the ends of the two spring rack tubes (1) are connected by several connecting screws (6). The connecting screws (6) are located inside the annular groove (51), and after the two annular connecting seats (4) are connected, there is a gap between the two spring rack tubes (1).

2. The bearing fitting for maintaining the internal center of gravity of a horizontal gun according to claim 1, characterized in that: The cross-section of the annular shielding ring (53) is L-shaped. The inner wall of the horizontal section of the annular shielding ring (53) is threaded to the fixing ring (52). The outer wall of the horizontal section of the annular shielding ring (53) is fixedly connected to the elastic contact member (54). The vertical section of the annular shielding ring (53) is provided with a sealing ring (55). The sealing ring (55) can abut against the end of the fixing ring (52) for sealing.

3. A bearing fitting for maintaining the internal center of gravity of a horizontal gun according to claim 1, characterized in that: The elastic contact element (54) is configured as an elastic rubber body with a U-shaped cross-section, and the end of the elastic rubber body has an abutment protrusion.

4. A bearing fitting for maintaining the internal center of gravity of a horizontal gun according to claim 1, characterized in that: A dustproof foot pad (7) is provided between the two annular connecting seats (4).

5. A bearing fitting for maintaining the internal center of gravity of a horizontal gun according to claim 1, characterized in that: The outer wall of the annular shielding ring (53) is provided with a hand-held part (56).

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