Hydraulic oil pipe joint for hydraulic equipment

Abstract

The utility model discloses a hydraulic oil pipe joint for hydraulic equipment, the joint includes base, revolving stage, swing seat and connecting seat, revolving stage rotation connection on base, swing seat damping hinged on revolving stage top and through locking piece position fixing, connecting seat is inserted on swing seat, and both ends of connecting seat all are provided with the connecting unit for connecting pipeline. The connecting unit contains the connecting end, the outer thread interface and the inner thread screw sleeve, and the double sealing structure is formed by cooperating the first sealing ring of L-shaped section and the second sealing ring of O-shaped section. Ball valve control is further equipped on connecting seat and is connected two groups of connecting unit's conduction or disconnect. The utility model discloses through the cooperation of revolving stage and swing seat has improved the flexibility of installation and maintenance, and double sealing structure has strengthened the sealing performance, has reduced the hydraulic oil leakage risk effectively, and the utility model discloses convenient, sealed reliable and the like advantage, is applicable to the pipeline connection of various hydraulic systems.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic connectors, specifically to a hydraulic oil pipe joint for hydraulic equipment. Background Technology

[0002] Hydraulic systems, as the core of power transmission and control in industrial equipment, construction machinery, hydraulic test benches, and various automated devices, directly affect the safety, operational stability, and maintenance costs of the entire machine due to the reliability, sealing performance, ease of installation and maintenance, and vibration resistance of their pipe connections. Various types of pipe fittings are commonly used in existing hydraulic systems, including straight-through fittings, rotary fittings, quick-connect fittings, and fittings with valves. These pipe fittings, as key components connecting various hydraulic components and pipelines, have a significant impact on the stable operation and efficiency of the entire hydraulic system.

[0003] When setting up a hydraulic system on-site, technicians often encounter situations where the hydraulic lines (low-pressure flexible hoses) are not long enough, requiring the use of connectors to extend the lines. Therefore, straight-through connectors are needed. After connection, the connectors need to be fixed. Traditionally, a fixed installation structure is used to fix the connector to the machine body. However, this method lacks flexibility when dealing with complex equipment layouts and situations requiring frequent adjustments to pipeline positions, causing numerous inconveniences for equipment installation, commissioning, and subsequent maintenance. For example, when interference is found between the subsequent pipeline layout and the pipeline at the connector, one approach is to adjust the layout of the subsequent pipelines to avoid the connector, requiring the original pipeline layout to be scrapped and rebuilt. Another approach is to adjust the position of the pipeline at the connector, which also requires the entire connector installation structure to be disassembled and relocated. Meanwhile, there is a possibility of hydraulic oil leakage at the connection joint after installation. At this time, the connection joint needs to be inspected. However, the fixed installation structure cannot adjust the position of the connection joint, which affects the operating space during maintenance. For example, it is difficult to unscrew the pipeline connection, which increases the difficulty of maintenance personnel.

[0004] Therefore, there is an urgent need to design a hydraulic hose connector for hydraulic equipment to be used for connecting and extending pipelines, which can be adjusted in position during installation, commissioning and maintenance to meet the current pipeline connection requirements of hydraulic equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic oil pipe joint that is compact in structure, easy to install and adjust, reliable in sealing, and easy to maintain on site.

[0006] The technical solution adopted by this utility model to solve the above problems is: a hydraulic oil pipe joint for hydraulic equipment, including a base, a turntable, a swing seat and a connecting seat. The turntable is rotatably connected to the base, the swing seat is damped and hinged above the turntable and fixed in position by a locking member, and the connecting seat is inserted into the swing seat, and both ends of the connecting seat are provided with connecting units for connecting pipelines.

[0007] Preferably, the connecting unit includes a connecting end, an external threaded interface, and an internal threaded sleeve. The connecting end is fixed to the pipeline, the external threaded interface is located at one end of the connecting seat, and the internal threaded sleeve is rotatably fitted onto the connecting end, and the connecting end is provided with a step.

[0008] Preferably, a first sealing ring is provided between the inner end of the internal threaded sleeve and the end of the external threaded interface, and a second sealing ring is provided between the connection root of the external threaded interface and the inner sidewall of the internal threaded sleeve.

[0009] Preferably, the first sealing ring has an L-shaped cross-section, the inner end of the internal threaded sleeve is provided with an annular boss, the narrow part of the first sealing ring is located between the annular boss and the inner sidewall of the internal threaded sleeve, and the wide part of the first sealing ring is located between the end of the annular boss and the end of the external threaded interface.

[0010] Preferably, the second sealing ring has an O-shaped cross section, and the connection root of the external threaded interface has an annular groove, with the second sealing ring disposed within the annular groove.

[0011] Preferably, the connecting seat is provided with a ball valve for driving the two sets of connecting units to be connected or disconnected. The ball valve includes a valve core rotatably disposed in the connecting seat and a valve stem that drives the valve core to rotate. The valve core has a through hole.

[0012] Preferably, the swing seat has a through hole, and the connecting seat is provided with a plug sleeve that is compatible with the swing seat. The plug sleeve has an opening, which is aligned with the through hole and has a pin inserted through it. The end of the pin is inserted with a buckle pin.

[0013] Preferably, the base is symmetrically provided with two sets of mounting holes, and threaded fasteners are inserted through the mounting holes.

[0014] Preferably, the locking component includes a locking bolt and a locking knob adapted to the threaded connection of the locking bolt.

[0015] Compared with the prior art, this utility model has the following advantages and effects:

[0016] This invention, through the design of a turntable and a swing seat, allows the connecting seat to rotate along the base and swing around the turntable, improving its flexibility during installation and maintenance. This facilitates the installation, debugging, and maintenance of the equipment and effectively solves the problem of insufficient flexibility in traditional fixed installation structures. The double-sealing structure, formed by an internal threaded sleeve, an L-shaped sealing ring, and an O-shaped sealing ring, significantly reduces the risk of hydraulic oil leakage and improves the safety and operational stability of the hydraulic system. A ball valve allows for the connection or disconnection of the two sets of connecting units, facilitating maintenance operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a hydraulic oil pipe joint for hydraulic equipment according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the connection unit in an embodiment of the present invention.

[0019] Figure 3 This is a structural cross-sectional view of a hydraulic oil pipe joint for hydraulic equipment according to an embodiment of this utility model.

[0020] Figure 4 yes Figure 3 A magnified view of the area marked A.

[0021] Figure 5 yes Figure 3 A magnified view of the area marked B.

[0022] Figure numbers: Base 10, Turntable 11, Swing seat 12, Connecting seat 13, Locking component 14, Connecting unit 15, Mounting hole 16, Threaded fastener 17, Locking bolt 18, Locking knob 19, Connecting end 20, External threaded interface 21, Internal threaded sleeve 22, Step 23, First sealing ring 24, Second sealing ring 25, Annular boss 26, Narrow part 27, Wide part 28, Annular groove 29, Ball valve 30, Valve core 31, Valve stem 32, Through hole 33, Through hole 34, Insert sleeve 35, Opening hole 36, Pin 37, Opening pin 38. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0024] Example:

[0025] See Figure 1 - Figure 5This embodiment relates to a hydraulic pipe connector for hydraulic equipment, specifically used in hydraulic systems that require frequent adjustments to pipe positions and extensions, such as hydraulic pipe connections in hydraulic equipment. It includes a base 10, a turntable 11, a swing seat 12, and a connecting seat 13. The turntable 11 is rotatably connected to the base 10. The swing seat 12 is damped and hinged above the turntable 11 and fixed in position by a locking member 14. The connecting seat 13 is inserted into the swing seat 12, and both ends of the connecting seat 13 are provided with connecting units 15 for connecting pipes. This invention, through the design of the turntable 11 and the swing seat 12, allows the connecting seat 13 to rotate along the base 10 and swing around the turntable 11, improving its flexibility during installation and maintenance. During installation, rotation and swinging can be used to avoid pre-set pipes without adjusting the layout of other pipes. During maintenance, rotation and swinging can adjust the position and angle of the connecting seat 13 to a convenient area for maintenance personnel. Furthermore, the adjustable performance can provide more functions in the future development of hydraulic systems: for example, in some engineering machinery equipment, some hydraulic lines are in motion, and the adjustable installation structure can adapt to the displacement of these lines, thereby reducing the possibility of damage and leakage at the connection between the lines and the connecting seat 13 due to frequent pulling of the lines.

[0026] Specifically, in this embodiment, the base 10 is symmetrically provided with two sets of mounting holes 16, and threaded fasteners 17 pass through the mounting holes 16. In this embodiment, the threaded fasteners 17 can be bolts. During actual installation, the base 10 is placed at a predetermined position on the hydraulic equipment, and the base 10 is securely fixed to the equipment by passing the bolts through the mounting holes 16 and engaging with the threaded holes on the equipment.

[0027] The turntable 11 is rotatably connected to the base 10, and the swing seat 12 is damped and hinged above the turntable 11 and fixed in position by the locking member 14. During installation, when the position of the pipeline needs to be adjusted, the locking member 14 is first loosened. At this time, the swing seat 12 can swing relative to the turntable 11, thereby driving the pipeline on the connecting seat 13 to be adjusted to a suitable position. After the pipeline position is adjusted appropriately, the swing seat 12 is fixed to the turntable 11 by the locking member 14. The locking member 14 includes a locking bolt 18 and a locking knob 19 that is threadedly connected to the locking bolt 18. Tightening or loosening the locking bolt 18 and the locking knob 19 respectively achieves locking or unlocking of the swing seat 12 and the turntable 11.

[0028] The connector 13 is inserted into the swing seat 12, and both ends are provided with connecting units 15 for connecting pipelines. See also Figure 2The connecting unit 15 includes a connecting end 20, an external threaded interface 21, and an internal threaded sleeve 22. The connecting end 20 is fixed to the pipeline. The external threaded interface 21 is located at one end of the connecting seat 13. The internal threaded sleeve 22 is rotatably fitted onto the connecting end 20, and the connecting end 20 has a step 23 to prevent the internal threaded sleeve 22 from falling off. When connecting the pipeline, the connecting end 20 of the pipeline is inserted into the external threaded interface 21 of the connecting seat 13, and then the internal threaded sleeve 22 is rotated to engage with the external threaded interface 21. See also... Figure 4 A first sealing ring 24 is provided between the inner end of the internal threaded sleeve 22 and the end of the external threaded interface 21, and a second sealing ring 25 is provided between the connection root of the external threaded interface 21 and the inner sidewall of the internal threaded sleeve 22. Specifically, the first sealing ring 24 has an L-shaped cross-section, and the inner end of the internal threaded sleeve 22 is provided with an annular boss 26. The narrow part 27 of the first sealing ring 24 is located between the annular boss 26 and the inner sidewall of the internal threaded sleeve 22, and the wide part 28 of the first sealing ring 24 is located between the end of the annular boss 26 and the end of the external threaded interface 21, effectively preventing hydraulic oil from leaking from the connection end of the external threaded interface 21. The second sealing ring 25 has an O-shaped cross-section, and the connection root of the external threaded interface 21 is provided with an annular groove 29. The second sealing ring 25 is located in the annular groove 29, so that the threaded connection between the internal threaded sleeve 22 and the external threaded interface 21 between the first sealing ring 24 and the second sealing ring 25 forms a cylindrical sealing cavity, which further enhances the sealing effect, reduces the risk of hydraulic oil leakage, and thus improves the connection sealing performance between the pipeline and the connecting seat 13.

[0029] The connecting seat 13 is equipped with a ball valve 30 for driving the two sets of connecting units 15 to be connected or disconnected. The ball valve 30 includes a valve core 31 rotatably disposed within the connecting seat 13 and a valve stem 32 that drives its rotation. The valve core 31 has a through hole 33. When pipeline switching or maintenance is required, simply rotate the valve stem 32 to rotate the valve core 31, thereby changing the position of the through hole 33 of the valve core 31 to connect or disconnect the two sets of connecting units 15. For example, during normal operation, the through hole 33 of the valve core 31 is aligned with the pipelines of the two sets of connecting units 15, allowing hydraulic oil to flow normally in the pipelines. When maintenance or replacement of one set of pipelines is required, rotating the valve stem 32 causes the through hole 33 of the valve core 31 to be misaligned with that set of pipelines, thereby cutting off the flow of hydraulic oil and facilitating maintenance operations.

[0030] See Figure 5The swing seat 12 has a through hole 34, and the connecting seat 13 has a sleeve 35 that is compatible with the swing seat 12. The sleeve 35 has an opening 36, which is aligned with the through hole 34 and has a pin 37 inserted through it. A snap pin 38 is inserted into the end of the pin 37. When installing the connecting seat 13 onto the swing seat 12, the sleeve 35 is inserted into the through hole 34 of the swing seat 12, and then the pin 37 is passed through the opening 36 of the sleeve 35 and the through hole 34 of the swing seat 12. The snap pin 38 is then attached to the end of the pin 37 to prevent it from falling off, thus achieving a stable connection between the connecting seat 13 and the swing seat 12. Disassembly can be achieved by reversing the above operation, which is convenient.

[0031] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A hydraulic oil pipe connector for hydraulic equipment, characterized in that, It includes a base, a turntable, a swing seat, and a connecting seat. The turntable is rotatably connected to the base, the swing seat is damped and hinged above the turntable and fixed in position by a locking device, and the connecting seat is inserted into the swing seat. Both ends of the connecting seat are provided with connecting units for connecting pipelines.

2. A hydraulic oil pipe connector for hydraulic equipment according to claim 1, characterized in that: The connection unit includes a connection end, an external threaded interface, and an internal threaded sleeve. The connection end is fixed to the pipeline, the external threaded interface is located at one end of the connection seat, and the internal threaded sleeve is rotatably fitted onto the connection end, and the connection end is provided with a step.

3. A hydraulic oil pipe connector for hydraulic equipment according to claim 2, characterized in that: A first sealing ring is provided between the inner end of the internal threaded sleeve and the end of the external threaded interface, and a second sealing ring is provided between the connection root of the external threaded interface and the inner sidewall of the internal threaded sleeve.

4. A hydraulic oil pipe connector for hydraulic equipment according to claim 3, characterized in that: The first sealing ring has an L-shaped cross-section, and the inner end of the internal threaded sleeve is provided with an annular boss. The narrow part of the first sealing ring is located between the annular boss and the inner sidewall of the internal threaded sleeve, and the wide part of the first sealing ring is located between the end of the annular boss and the end of the external threaded interface.

5. A hydraulic oil pipe connector for hydraulic equipment according to claim 3, characterized in that: The second sealing ring has an O-shaped cross section, and the connection root of the external threaded interface has an annular groove, in which the second sealing ring is disposed.

6. A hydraulic oil pipe connector for hydraulic equipment according to claim 1, characterized in that: The connecting seat is provided with a ball valve for driving the two sets of connecting units to be connected or disconnected. It includes a valve core rotatably disposed in the connecting seat and a valve stem that drives it to rotate. The valve core has a through hole.

7. A hydraulic oil pipe connector for hydraulic equipment according to claim 1, characterized in that: The swing seat has a through hole, and the connecting seat has a plug sleeve that is compatible with the swing seat. The plug sleeve has an opening, which is aligned with the through hole and has a pin inserted through it. The end of the pin is connected to a buckle pin.

8. A hydraulic oil pipe connector for hydraulic equipment according to claim 1, characterized in that: The base is symmetrically provided with two sets of mounting holes, and threaded fasteners are inserted through the mounting holes.

9. A hydraulic oil pipe connector for hydraulic equipment according to claim 1, characterized in that: The locking component includes a locking bolt and a locking knob adapted to the threaded connection of the locking bolt.

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