Oil inlet pipe structure for improving welding strength

Abstract

The utility model discloses an oil inlet pipe structure of improving welding strength, including oil inlet pipe body, the oil inlet pipe body one end is provided with second thread groove and second stair port, the oil inlet pipe body outer wall is provided with thread, and the oil inlet pipe body outer wall is equipped with the connecting screw bushing, and the connecting screw bushing is the thread connection with the oil inlet pipe body, the connecting screw bushing outer wall is integratively connected with the fixed frame, and the second stair port is located the outside of second thread groove, and the height of second stair port outside is higher than the height of second stair port inside, and the oil inlet pipe body is inserted and is equipped with the connecting plug, and the connecting plug top is integratively connected with the connecting fitting, and the connecting fitting bottom is provided with first stair port and first thread groove, and the first stair port is located the outside of first thread groove, and the structure of first stair port and second stair port is matched, and the clearance is left between first stair port and second stair port. The device can improve the firmness when the oil inlet pipe body and connecting fitting weld, and reduce the cost of processing simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of oil inlet pipe processing technology, specifically to an oil inlet pipe structure that improves welding strength. Background Technology

[0002] An oil inlet pipe, as the name suggests, is a pipe that guides oil into a piece of equipment, chamber, or component. It is an indispensable basic component of hydraulic, lubrication, and fuel systems, equivalent to the "arteries" that supply "blood" to a machine. Copper brazing is a welding process that uses copper or copper alloys with a melting point above 450°C but below that of the base metal as filler metal to join metal workpieces together.

[0003] Currently, when copper brazing is performed on the oil inlet pipe, the end face is usually milled with grooves to ensure that the copper can flow to the entire end face. Therefore, milling is required, which requires the use of four-axis milling and turning. This design not only results in poor copper distribution uniformity but also has high processing costs, so it needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide an oil inlet pipe structure that improves welding strength, thereby solving the problems of poor copper brazing strength and high cost of existing oil inlet pipes mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oil inlet pipe structure for improving welding strength, comprising an oil inlet pipe body, wherein one end of the oil inlet pipe body is provided with a second threaded groove and a second stepped opening, the second stepped opening is located outside the second threaded groove, and the height of the outside of the second stepped opening is higher than the height of the inside of the second stepped opening, a connecting plug is inserted into the oil inlet pipe body, a connecting accessory is integrally connected to the top of the connecting plug, and a first stepped opening and a first threaded groove are provided at the bottom of the connecting accessory.

[0006] Preferably, the first stepped opening is located outside the first threaded groove, and the structures of the first stepped opening and the second stepped opening are matched, with a gap between the first stepped opening and the second stepped opening.

[0007] Preferably, the outer wall of the oil inlet pipe is threaded, and a connecting screw sleeve is fitted on the outer wall of the oil inlet pipe, with the connecting screw sleeve and the oil inlet pipe body being threadedly connected.

[0008] Preferably, the outer wall of the connecting screw sleeve is integrally connected to a fixing frame, and multiple fixing frames are distributed in a circular and equally spaced manner about the outer wall of the connecting screw sleeve.

[0009] Preferably, one end of the fixing frame is located on the outer wall of the connecting accessory, and an adjusting screw is inserted into one end of the fixing frame.

[0010] Preferably, the adjusting screw is threadedly connected to the fixing frame, and a positioning clamp is connected to one end of the adjusting screw.

[0011] Preferably, the positioning clamp is tightly fitted to the outer wall of the connecting accessory, and the positioning clamp is used to position and limit the connecting accessory.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) This device can improve the strength of the welding between the oil inlet pipe and the connecting accessories, while reducing the processing cost.

[0013] (2) This device sets a second stepped opening and a second threaded groove on the end face of the oil inlet pipe body, and sets a first stepped opening and a first threaded groove on the bottom of the connecting fitting. Under the action of the second stepped opening and the first stepped opening, the copper material can be distributed to the second threaded groove and the first threaded groove. At the same time, the structure of the second threaded groove and the first threaded groove can make the copper material evenly distributed, thereby ensuring the firmness of the subsequent welding between the oil inlet pipe body and the connecting fitting, and improving the welding strength between the oil inlet pipe body and the connecting fitting.

[0014] (3) This device connects a connecting sleeve to the outer wall of the oil inlet pipe body, and the positioning clamp on the fixing frame on the outer wall of the connecting sleeve can position and restrict the installation position of the connecting parts, thereby ensuring the stability of the assembly of the connecting parts and the oil inlet pipe body, which is beneficial to subsequent welding and avoids the situation of misalignment between the oil inlet pipe body and the connecting parts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an oil inlet pipe structure for improving welding strength according to the present invention. Figure 2 This utility model relates to an oil inlet pipe structure for improving welding strength. Figure 1 Enlarged view of point A in the middle; Figure 3 This is a top view of the oil inlet pipe body of an oil inlet pipe structure for improving welding strength according to this utility model; Figure 4 This is a bottom view of the connecting fitting for an oil inlet pipe structure designed to improve welding strength according to this utility model.

[0016] In the diagram: 1. Oil inlet pipe body; 2. Connecting fittings; 3. Connecting plug; 4. First stepped opening; 5. First threaded groove; 6. Second threaded groove; 7. Positioning clamp; 8. Adjusting screw; 9. Fixing bracket; 10. Connecting screw sleeve; 11. Second stepped opening. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 This utility model provides a technical solution: an oil inlet pipe structure for improving welding strength, including an oil inlet pipe body 1. One end of the oil inlet pipe body 1 has a second threaded groove 6 and a second stepped opening 11. The outer wall of the oil inlet pipe body 1 has threads, and a connecting screw sleeve 10 is fitted onto the outer wall of the oil inlet pipe body 1. The connecting screw sleeve 10 is threadedly connected to the oil inlet pipe body 1. The connecting screw sleeve 10 can be quickly installed and removed from the oil inlet pipe body 1. A fixing bracket 9 is integrally connected to the outer wall of the connecting screw sleeve 10. Multiple fixing brackets 9 are evenly distributed in a circular pattern around the outer wall of the connecting screw sleeve 10. This structure improves welding strength by setting multiple fixing brackets 9 and adjusting screws... The rod 8 and the positioning clamp 7 ensure the stability and accuracy of the positioning of the connecting accessory 2. One end of the fixing bracket 9 is located on the outer wall of the connecting accessory 2, and an adjusting screw 8 is inserted into the other end of the fixing bracket 9. This structure allows the adjusting screw 8 to adjust the positioning clamp 7 closer to or further away from the connecting accessory 2. The adjusting screw 8 and the fixing bracket 9 are threadedly connected, and the positioning clamp 7 is connected to one end of the adjusting screw 8. This structure allows the position of the positioning clamp 7 to be adjusted by rotating the adjusting screw 8, making it easy to adjust the position of the positioning clamp 7 according to requirements. The positioning clamp 7 fits tightly against the outer wall of the connecting accessory 2 and is used for positioning the connecting accessory 2. The positioning and limiting of accessory 2: This structure can limit and position connecting accessories 2 of different diameters by adjusting the position of the positioning clamp 7, thereby ensuring the stability of connecting accessory 2 during the connection process with the oil inlet pipe body 1, and ensuring the quality and accuracy of subsequent welding. The second stepped opening 11 is located outside the second threaded groove 6, and the height of the outer side of the second stepped opening 11 is higher than the height of the inner side of the second stepped opening 11. A connecting plug 3 is inserted into the oil inlet pipe body 1, and the connecting accessory 2 is integrally connected to the top of the connecting plug 3. The bottom of the connecting accessory 2 is provided with a first stepped opening 4 and a first threaded groove 5. The first stepped opening 4 of this device... The first threaded groove 5, the second stepped opening 11, and the second threaded groove 6 can be machined using a two-axis CNC lathe, while the groove on the traditional oil inlet pipe body 1 requires machining using a four-axis milling machine. This difference in machining methods reduces costs. The first stepped opening 4 is located outside the first threaded groove 5, and the structure of the first stepped opening 4 and the second stepped opening 11 are matched. There is a gap between the first stepped opening 4 and the second stepped opening 11. This structure of the first stepped opening 4 and the second stepped opening 11 can accelerate the flow of the copper material after heating into the first threaded groove 5 and the second threaded groove 6, making the copper material distribution more uniform.

[0019] Working principle: When using this oil inlet pipe structure with improved welding strength, copper material is first added to the second stepped opening 11 and the second threaded groove 6 at the top of the oil inlet pipe body 1. Then, the connecting fitting 2 is connected to the oil inlet pipe body 1. During connection, the connecting plug 3 at the end of the connecting fitting 2 is inserted into the top of the oil inlet pipe body 1. Then, the connecting threaded sleeve 10 is threadedly connected to the oil inlet pipe body 1. Then, the adjusting screw 8 is rotated, causing the adjusting screw 8 to drive the positioning clamp 7 to move, so that the positioning clamp 7 fits against the outer wall of the connecting fitting 2, which plays a role in limiting and positioning the connecting fitting 2. Then, the connecting fitting 2 and the oil inlet pipe body 1 can be heated. During the heating process, the copper material melts and flows, and is evenly distributed between the first stepped opening 4, the first threaded groove 5, the second stepped opening 11 and the second threaded groove 6, so that the connecting fitting 2 and the oil inlet pipe body 1 are firmly connected.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oil inlet pipe structure for improving welding strength, comprising an oil inlet pipe body (1), characterized in that: The oil inlet pipe body (1) has a second threaded groove (6) and a second stepped opening (11) at one end. The second stepped opening (11) is located outside the second threaded groove (6). The height of the outside of the second stepped opening (11) is higher than the height of the inside of the second stepped opening (11). A connecting plug (3) is inserted into the oil inlet pipe body (1). A connecting accessory (2) is integrally connected to the top of the connecting plug (3). The bottom of the connecting accessory (2) is provided with a first stepped opening (4) and a first threaded groove (5).

2. The oil inlet pipe structure for improving welding strength according to claim 1, characterized in that: The first stepped opening (4) is located outside the first threaded groove (5). The structure of the first stepped opening (4) and the second stepped opening (11) are matched, and there is a gap between the first stepped opening (4) and the second stepped opening (11).

3. The oil inlet pipe structure for improving welding strength according to claim 1, characterized in that: The outer wall of the oil inlet pipe body (1) is threaded, and the outer wall of the oil inlet pipe body (1) is fitted with a connecting screw sleeve (10), and the connecting screw sleeve (10) is threadedly connected to the oil inlet pipe body (1).

4. The oil inlet pipe structure for improving welding strength according to claim 3, characterized in that: The outer wall of the connecting screw sleeve (10) is integrally connected to a fixing frame (9), and multiple fixing frames (9) are distributed in a circular and equally spaced manner about the outer wall of the connecting screw sleeve (10).

5. The oil inlet pipe structure for improving welding strength according to claim 4, characterized in that: One end of the fixing frame (9) is located on the outer wall of the connecting fitting (2), and an adjusting screw (8) is inserted into the other end of the fixing frame (9).

6. The oil inlet pipe structure for improving welding strength according to claim 5, characterized in that: The adjusting screw (8) is threadedly connected to the fixed frame (9), and a positioning clamp (7) is connected to one end of the adjusting screw (8).

7. The oil inlet pipe structure for improving welding strength according to claim 6, characterized in that: The positioning clamp (7) fits tightly against the outer wall of the connecting accessory (2), and the positioning clamp (7) is used to position and limit the connecting accessory (2).

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