Central rotary joint for hydraulic pipeline

Abstract

The center swivel joint for the hydraulic pipeline is provided with a swivel joint body, a hydraulic channel is arranged on the swivel joint body, a flow dividing component is arranged in the hydraulic channel and is a flow dividing plate, an assembly groove is formed in the top of the hydraulic channel, and a flow dividing plate is arranged in the assembly groove. Axial position adjustment can be achieved through a linkage structure of the extension channel, the sliding groove and the sliding block, the extension stroke is controlled through cooperation of the limiting guide rod and the body limiting groove, the assembly problem caused by insufficient installation distance when pipelines are in butt joint in a narrow space is effectively solved, and the pipeline butt joint device is suitable for equipment transformation or complex pipeline layout scenes. And the extension channel is fixed with the locking hoop by adopting a split type assembly connecting sleeve, and is matched with a rubber sealing ring to form a double-sealing guarantee.

Description

Technical Field

[0001] This utility model relates to a connector component, specifically a center rotary joint for hydraulic pipelines. Background Technology

[0002] Center rotary joints for hydraulic pipelines are mainly used in engineering machinery, metallurgical equipment, mining machinery, port machinery, and wind power generation. Their working environments are often high-temperature, high-pressure, dusty, or humid industrial environments, requiring the transmission of hydraulic power between stationary and rotating parts of the equipment. The core function of these joints is to maintain the continuity and sealing of the hydraulic system during relative rotational movement of the pipeline, preventing pipeline entanglement or hydraulic oil leakage due to rotation. Their structure, through precision seals and a high-strength outer shell design, can withstand high pressure, high torque, and frequent oscillations. In excavator booms, crane turntables, and other components, the joints connect and fix hydraulic pipelines to rotating joints, ensuring precise movement. In metallurgical rolling mills, mining drilling rigs, and other equipment, they adapt to high-temperature, vibration, and polluted environments, extending equipment lifespan.

[0003] In the prior art, 201921828318.3 discloses a central rotary joint for a fire truck hydraulic system. This utility model discloses a central rotary joint for a fire truck hydraulic system, including a mounting housing. A receiving pipe is fixedly installed at the bottom of the mounting housing. A partition is welded inside the bottom of the oil supply pipe. A connecting rod is connected to the inner side of the receiving ring. Sealing plates are attached to both the upper and lower surfaces of the partition. A ring rail is provided at the inner end of the mounting housing. A dustproof plate is attached to the outer side of the top of the oil supply pipe. A hollow rotating shaft is integrally connected to the top of the outer leaking plate, and an oil outlet pipe is provided at the top of the hollow rotating shaft. A flange is fixedly connected to the outer side of the hollow rotating shaft. This central rotary joint for a fire truck hydraulic system has a stable structure, prevents oil leakage, utilizes a copper heat dissipation ring and an outer leaking plate to reduce oil temperature, preventing damage to machinery from excessively high oil temperatures, and uses the sealing effect of the dustproof plate to prevent dust from falling into the interior of the mounting housing.

[0004] In existing technologies, dust can be prevented from falling into the interior of the mounting housing by the sealing effect of the dustproof plate. However, the swivel joint cannot be adjusted or extended in length, and its adaptability is poor when a short-distance extension is required. Utility Model Content

[0005] In order to overcome the shortcomings of existing technology in adapting to local short-distance extensions, this utility model provides a central rotary joint for hydraulic pipelines.

[0006] This utility model is achieved using the following technical solution: a central rotary joint for hydraulic pipelines, comprising a rotary joint body, a hydraulic channel on the rotary joint body, a flow-dividing component (a flow-dividing plate) inside the hydraulic channel, an assembly groove at the top of the hydraulic channel, into which the flow-dividing plate is inserted, side guide modules (flow-dividing protrusions) on both sides of the flow-dividing plate, an extension component on the rotary joint body, a sliding groove on the rotary joint body, an extension component (an extension channel) inside the sliding groove, and a slider between the extension channel and the sliding groove.

[0007] The rotary joint body is provided with a connecting component, which is a connecting flange, and the connecting flange is provided with a connecting hole.

[0008] The extension channel is provided with an assembly connecting sleeve, the assembly connecting sleeve is provided with a rubber sealing ring, and the assembly connecting sleeve is provided with a locking clamp.

[0009] The locking clamp is fitted onto the outer wall of the extension channel, and the locking clamp is provided with an assembly hole, in which an assembly bolt is installed.

[0010] Limiting components are provided on both sides of the extended channel. The limiting components are limiting guide rods, and the inner wall of the rotary joint body is provided with a limiting groove adapted to the limiting guide rod.

[0011] Compared with existing technologies, the linkage structure of the extension channel, slide, and slider in this utility model can achieve axial position adjustment. The extension stroke is controlled by the cooperation of the limiting guide rod and the limiting groove of the main body, which effectively solves the assembly problem caused by insufficient installation distance when connecting pipes in narrow spaces. It is suitable for equipment modification or complex pipeline layout scenarios. The extension channel adopts a split assembly connection sleeve and locking clamp for fixation, and forms a double sealing guarantee with rubber sealing ring, which simplifies the on-site installation steps and ensures the sealing reliability under high pressure conditions.

[0012] A flow divider is installed inside the rotary joint. The combined flow guide of the flow divider and the side flow guide module, along with the flexible compensation function of the extended channel, ensures that the hydraulic medium is delivered stably with low resistance during rotation. This avoids the risk of leakage or pressure loss caused by micro-deformation of the pipeline, thereby improving the dynamic response performance and long-term operational stability of the entire hydraulic system. Attached Figure Description

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

[0014] Figure 2 This is a schematic diagram of the structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the structure of this utility model.

[0018] In the diagram: 1 is the rotary joint body, 2 is the hydraulic channel, 3 is the flow divider plate, 4 is the assembly groove, 5 is the guide protrusion, 6 is the slide groove, 7 is the extension channel, 8 is the connecting flange, 9 is the assembly connecting sleeve, 10 is the locking clamp, 11 is the limit guide rod, and 12 is the limit groove. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0020] A central rotary joint for hydraulic pipelines includes a rotary joint body 1, a hydraulic channel 2, a flow-dividing component (flow-dividing plate 3) inside the hydraulic channel 2, an assembly groove 4 at the top of the hydraulic channel 2 into which the flow-dividing plate 3 is inserted, side guide modules (flow-dividing protrusions 5) on both sides of the flow-dividing plate 3, an extension component (extension channel 7) on the rotary joint body 1, a sliding groove 6 within the sliding groove 6, and a slider between the extension channel 7 and the sliding groove 6.

[0021] The linkage structure of the extension channel 7, slide 6, and slider can realize axial position adjustment. The extension stroke is controlled by the cooperation of the limit guide rod 11 and the limit groove 12, which effectively solves the assembly problem caused by insufficient installation distance when connecting pipes in narrow spaces. It is suitable for equipment modification or complex pipeline layout scenarios. The extension channel 7 adopts a split assembly connection sleeve and locking clamp 10 for fixation, and forms a double sealing guarantee with rubber sealing ring, which simplifies the on-site installation steps and ensures the sealing reliability under high pressure conditions.

[0022] The rotary joint body 1 is provided with a connecting component, which is a connecting flange 8. The connecting flange 8 is provided with a connecting hole. The extension channel 7 is provided with an assembly connecting sleeve 9. The assembly connecting sleeve 9 is provided with a rubber sealing ring and a locking clamp 10.

[0023] The locking clamp 10 is fitted onto the outer wall of the extension channel 7. The locking clamp 10 is provided with an assembly hole, and an assembly bolt is provided in the assembly hole. Limiting components are provided on both sides of the extension channel 7. The limiting components are limiting guide rods 11. The inner wall of the rotary joint body 1 is provided with a limiting groove 12 adapted to the limiting guide rod.

[0024] A flow divider 3 is installed inside the rotary joint 1. The combined flow guide of the flow divider 3 and the side flow guide module extends the flexible compensation function of the channel, so that the hydraulic medium is transported stably with low resistance during rotation, avoiding the risk of leakage or pressure loss caused by micro deformation of the pipeline, thereby improving the dynamic response performance and long-term operational stability of the entire hydraulic system.

[0025] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A central rotary joint for hydraulic pipelines, comprising a rotary joint body, a hydraulic channel on the rotary joint body, a flow-dividing component (a flow-dividing plate) inside the hydraulic channel, an assembly groove at the top of the hydraulic channel into which the flow-dividing plate is inserted, side flow-guiding modules (flow-guiding protrusions) on both sides of the flow-dividing plate, and an extension component on the rotary joint body, characterized in that: The rotary joint body is provided with a sliding groove, and an extension component is provided in the sliding groove. The extension component is an extension channel, and a slider is provided between the extension channel and the sliding groove.

2. The central rotary joint for hydraulic pipelines according to claim 1, characterized in that: The rotary joint body is provided with a connecting component, which is a connecting flange, and the connecting flange is provided with a connecting hole.

3. The central rotary joint for hydraulic pipelines according to claim 2, characterized in that: The extension channel is provided with an assembly connecting sleeve, the assembly connecting sleeve is provided with a rubber sealing ring, and the assembly connecting sleeve is provided with a locking clamp.

4. The central rotary joint for hydraulic pipelines according to claim 3, characterized in that: The locking clamp is fitted onto the outer wall of the extension channel, and the locking clamp is provided with an assembly hole, in which an assembly bolt is installed.

5. The central rotary joint for hydraulic pipelines according to claim 1, characterized in that: Limiting components are provided on both sides of the extended channel. The limiting components are limiting guide rods, and the inner wall of the rotary joint body is provided with a limiting groove adapted to the limiting guide rod.

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