High-pressure oil pipe joint for engineering machinery

Abstract

The utility model discloses a high-pressure oil pipe joint for engineering machinery, which belongs to the technical field of high-pressure oil pipes and comprises a joint body and an oil pipe body, internal threads are arranged on two sides of the inner wall of the joint body, one end of the oil pipe body is communicated with a connecting pipe, and external threads are arranged on the surface of the connecting pipe. An upper clamping block and a lower clamping block are arranged at the top and the bottom of the joint of the connector body and the oil pipe body respectively. The connecting pipe is screwed into the inner wall of the connector body, quick connection and fixation are achieved through mutual meshing of the internal threads and the external threads, then the upper clamp block and the lower clamp block are clamped to the top and the bottom of the joint of the connector body and the oil pipe body respectively, and after clamping is completed, the connecting pipe is connected with the oil pipe body through the upper clamp block and the lower clamp block. The two connecting blocks are connected and fixed through the fastening bolt, multiple fixing of the joint body and the oil pipe body is achieved through cooperation of the upper clamping block and the lower clamping block, and the stability and sealing performance of the joint body and the oil pipe body in the using process are greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of high-pressure oil pipe technology, specifically relating to a high-pressure oil pipe connector for engineering machinery. Background Technology

[0002] High-pressure oil pipes are a component of high-pressure oil circuits. They are required to withstand a certain oil pressure and have a certain fatigue strength. High-pressure oil pipes have a wide range of applications, mainly used in hydraulic oil pipes of engineering machinery such as excavators, loaders, and sidecars. They are also used for the transportation of media such as submarine natural gas, oil, agricultural irrigation, steel mills, and chemical plants. When connecting to high-pressure oil pipes, joints are required.

[0003] The existing connectors and oil pipes are connected by threads. During long-term use, due to factors such as vibration and temperature changes, the threaded connection may loosen between the connector and the oil pipe, resulting in leakage and reducing the sealing performance between the oil pipe and the connector. Therefore, we provide a high-pressure oil pipe connector for engineering machinery. Utility Model Content

[0004] The purpose of this utility model is to provide a high-pressure oil pipe joint for engineering machinery to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure oil pipe connector for engineering machinery, comprising a connector body and an oil pipe body. Both sides of the inner wall of the connector body are provided with internal threads. One end of the oil pipe body is connected to a connecting pipe. The surface of the connecting pipe is provided with external threads. The top and bottom of the connection between the connector body and the oil pipe body are respectively provided with an upper clamping block and a lower clamping block. Both sides of the upper clamping block and the lower clamping block are fixedly connected with connecting blocks, and the two connecting blocks are fixedly connected by fastening bolts.

[0006] Using the above method, the connecting pipe is screwed into the inner wall of the connector body, and the internal and external threads interlock to achieve quick connection and fixation. Then, the upper clamp block and the lower clamp block are respectively clamped at the top and bottom of the connection between the connector body and the oil pipe body. After clamping, the two connecting blocks are connected and fixed by fastening bolts. The cooperation of the upper clamp block and the lower clamp block achieves multiple fixation at the connection between the connector body and the oil pipe body, which greatly improves the stability and sealing performance of the connector body and the oil pipe body during use.

[0007] In a preferred embodiment of a high-pressure oil pipe joint for engineering machinery, sealing strips are bonded to both sides of the upper clamp block and the lower clamp block, and the connection between the sealing strips and the upper clamp block and the lower clamp block is bonded with adhesive.

[0008] By using the above solution, the connection between the connector body and the oil pipe body is sealed by the setting of the sealing strip, preventing external moisture from seeping into the interior of the oil pipe body through the gap at the connection between the connector body and the oil pipe body.

[0009] In a preferred embodiment of a high-pressure oil pipe joint for engineering machinery, the oil pipe body and the joint body have the same dimensions and shape.

[0010] By adopting the above solution, since the dimensions of the oil pipe body and the connector body are the same, the connection between the connector body and the oil pipe body is more aesthetically pleasing.

[0011] As a preferred embodiment of a high-pressure oil pipe joint for engineering machinery, the surface of the oil pipe body is coated with an anti-rust layer, which includes a mica iron oxide anti-rust paint layer and a chlorinated polyethylene anti-rust paint layer.

[0012] By adopting the above solution and setting an anti-rust layer, oxidation and corrosion of the joint body are prevented during long-term use, which greatly improves the service life of the joint body.

[0013] In a preferred embodiment of a high-pressure oil pipe connector for engineering machinery, the connecting block has a through hole for the fastening bolt to pass through, and the size of the through hole is larger than the size of the fastening bolt.

[0014] By adopting the above solution, since the size of the through hole is larger than the size of the fastening bolt, it prevents the fastening bolt from getting stuck when passing through the two connecting blocks, thus improving the smoothness of installation.

[0015] In a preferred embodiment of a high-pressure oil pipe connector for engineering machinery, a nut is threaded onto the surface of the fastening bolt and located at the bottom of the connecting block, and the size of the nut is adapted to the fastening bolt.

[0016] By using the above solution, the fastening bolts are limited by nuts to prevent them from loosening or stripping, thus further improving the fastening effect of the fastening bolts.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model screws the connecting pipe into the inner wall of the connector body, and uses the interlocking of the internal and external threads to achieve quick connection and fixation. Then, the upper clamp block and the lower clamp block are respectively clamped at the top and bottom of the connection between the connector body and the oil pipe body. After clamping, the two connecting blocks are connected and fixed by fastening bolts. The cooperation of the upper clamp block and the lower clamp block achieves multiple fixation at the connection between the connector body and the oil pipe body, which greatly improves the stability and sealing performance of the connector body and the oil pipe body during use.

[0019] 2. In this utility model, the nut is screwed in from the bottom of the fastening bolt until the nut is at the bottom of the connecting block and the movement stops. The nut limits the fastening bolt and prevents it from loosening or stripping, thus further improving the fixing effect of the fastening bolt. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is an enlarged view of point A in this utility model;

[0022] Figure 3 This is an exploded view of the present invention.

[0023] In the diagram: 1. Connector body; 2. Oil pipe body; 3. Connecting pipe; 4. External thread; 5. Upper clamp block; 6. Lower clamp block; 7. Connecting block; 8. Fastening bolt; 9. Sealing strip; 10. Internal thread. Detailed Implementation

[0024] Please see Figure 1-3 A high-pressure oil pipe connector for engineering machinery includes a connector body 1 and an oil pipe body 2. Both sides of the inner wall of the connector body 1 are provided with internal threads 10. One end of the oil pipe body 2 is connected to a connecting pipe 3, the surface of which is provided with external threads 4. An upper clamping block 5 and a lower clamping block 6 are respectively provided at the top and bottom of the connection between the connector body 1 and the oil pipe body 2. Figure 1 As shown, sealing strips 9 are adhered to both sides of the upper clamp block 5 and the lower clamp block 6, and the connection between the sealing strips 9 and the upper clamp block 5 and the lower clamp block 6 is bonded with adhesive. The sealing strips 9 seal the connection between the connector body 1 and the oil pipe body 2, preventing external moisture from seeping into the interior of the oil pipe body 2 through the gap at the connection. Connecting blocks 7 are fixedly connected to both sides of the upper clamp block 5 and the lower clamp block 6. Figure 3 As shown, the connecting block 7 has a through hole for the fastening bolt 8 to pass through, and the size of the through hole is larger than the size of the fastening bolt 8. Because the size of the through hole is larger than the size of the fastening bolt 8, it prevents the fastening bolt 8 from getting stuck when passing through the two connecting blocks 7, thus improving the smoothness of installation. The two connecting blocks 7 are fixedly connected by the fastening bolt 8. The connecting pipe 3 is screwed into the inner wall of the connector body 1, and the internal thread 10 and the external thread 4 interlock to achieve quick connection and fixation. Next, the upper clamp block 5 and the lower clamp block 6 are respectively clamped at the top and bottom of the connection between the connector body 1 and the oil pipe body 2. After clamping, the two connecting blocks 7 are connected and fixed by the fastening bolt 8. The cooperation of the upper clamp block 5 and the lower clamp block 6 achieves multiple fixation at the connection between the connector body 1 and the oil pipe body 2, which greatly improves the stability and sealing performance of the connector body 1 and the oil pipe body 2 during use.

[0025] See Figure 1 As shown, the oil pipe body 2 and the connector body 1 are the same size and have the same shape. Because the oil pipe body 2 and the connector body 1 are the same size, the connection between the connector body 1 and the oil pipe body 2 is more aesthetically pleasing. The surface of the oil pipe body 2 is coated with an anti-rust layer, which includes a mica iron oxide anti-rust paint layer and a chlorinated polyethylene anti-rust paint layer. This anti-rust layer prevents oxidation and corrosion of the connector body 1 during long-term use, greatly improving its service life. Figure 2 As shown, a nut is threadedly connected to the surface of the fastening bolt 8 and the bottom of the connecting block 7. The size of the nut is adapted to the fastening bolt 8. The nut limits the fastening bolt 8 to prevent it from loosening or stripping, thus further improving the fixing effect of the fastening bolt 8.

[0026] In use, the connecting pipe 3 is screwed into the inner wall of the connector body 1. The internal thread 10 and external thread 4 interlock to achieve quick connection and fixation. Next, the upper clamping block 5 and lower clamping block 6 are respectively clamped onto the top and bottom of the connection between the connector body 1 and the oil pipe body 2. After clamping, the two connecting blocks 7 are connected and fixed using the fastening bolts 8. The cooperation of the upper clamping block 5 and lower clamping block 6 provides multiple fixations to the connection between the connector body 1 and the oil pipe body 2, greatly improving the stability and sealing performance of the connector body 1 and the oil pipe body 2 during use. Furthermore, the use of sealant... The characteristics of strip 9 seal the connection between the connector body 1 and the oil pipe body 2, preventing external moisture from seeping into the interior of the oil pipe body 2 through the gap between the connector body 1 and the oil pipe body 2. After fixing, screw the nut into the bottom of the fastening bolt 8 until the nut is at the bottom of the connecting block 7 and the movement stops. The nut limits the fastening bolt 8 to prevent it from loosening or stripping. Finally, because the surface of the connector body 1 is coated with an anti-rust layer, it can prevent the connector body 1 from oxidizing and rusting during long-term use, thus improving the service life of the connector body 1.

Claims

1. A high-pressure oil pipe joint for engineering machinery, characterized in that: The device includes a connector body (1) and an oil pipe body (2). Both sides of the inner wall of the connector body (1) are provided with internal threads (10). One end of the oil pipe body (2) is connected to a connecting pipe (3). The surface of the connecting pipe (3) is provided with external threads (4). The top and bottom of the connection between the connector body (1) and the oil pipe body (2) are respectively provided with an upper clamping block (5) and a lower clamping block (6). Both sides of the upper clamping block (5) and the lower clamping block (6) are fixedly connected with connecting blocks (7), and the two connecting blocks (7) are fixedly connected by fastening bolts (8).

2. The high-pressure oil pipe joint for engineering machinery according to claim 1, characterized in that: Both sides of the upper clamp block (5) and the lower clamp block (6) are glued with sealing strips (9), and the connection between the sealing strips (9) and the upper clamp block (5) and the lower clamp block (6) is glued with adhesive.

3. A high-pressure oil pipe joint for engineering machinery according to claim 1, characterized in that: The oil pipe body (2) and the connector body (1) are the same size and have the same shape.

4. A high-pressure oil pipe joint for engineering machinery according to claim 1, characterized in that: The surface of the oil pipe body (2) is coated with an anti-rust layer, which includes a mica iron oxide anti-rust paint layer and a chlorinated polyethylene anti-rust paint layer.

5. A high-pressure oil pipe joint for engineering machinery according to claim 1, characterized in that: The connecting block (7) has a through hole for the fastening bolt (8) to pass through, and the size of the through hole is larger than the size of the fastening bolt (8).

6. A high-pressure oil pipe joint for engineering machinery according to claim 1, characterized in that: The fastening bolt (8) has a nut threadedly connected to its surface and at the bottom of the connecting block (7), and the size of the nut is adapted to the fastening bolt (8).

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