Hybrid rotary joint and electro-hydraulic reel

Abstract

The utility model provides a hybrid rotating joint and an electro-hydraulic reel, relates to the field of rotating joints, and adopts the scheme that the hybrid rotating joint comprises a rotating shaft, a fluid joint rotor and a fluid joint stator, the fluid joint rotor is coaxially connected with one end of the rotating shaft, and the fluid joint stator is coaxially connected with the other end of the rotating shaft; the fluid connector rotor is rotatably arranged in the fluid connector stator, an output hole and a backflow hole are formed in the fluid connector stator, an output channel and a backflow channel are formed in the fluid connector rotor, and the output channel and the backflow channel each comprise an annular groove formed in the outer circle face of the fluid connector rotor. The annular groove of the output channel is communicated with the output hole, and the annular groove of the backflow channel is communicated with the backflow hole. The cable and pipeline collecting and releasing device can collect and release cables and pipelines at the same time, and use of two kinds of reels is avoided.

Description

Technical Field

[0001] The utility model relates to the field of rotary joints, in particular to a hybrid rotary joint and an electro-hydraulic reel. Background Art

[0002] A cable reel winds a cable with an extremely long length on the reel. When in use, the cable on the reel is released and unfolded, and when not in use, the cable or flexible pipeline is wound on the reel.

[0003] In the prior art, in order to ensure the normal transmission of current when the reel rotates, an electric slip ring is adopted, which is also called a rotary electrical joint or a conductive slip ring. It is a key device for realizing the power and signal transmission between rotating and stationary components. It is usually installed at the rotation center of the equipment and mainly consists of two major parts: rotating and stationary. These two parts are respectively called the rotor and the stator. The rotor is connected to the rotating structure of the equipment and rotates therewith, and the stator is connected to the fixed part of the equipment and is responsible for transmitting energy. During the rotation process, the conductive material between the rotor and the stator realizes the power transmission through the contact points.

[0004] However, with the cross-development of electric control and hydraulic control technologies, there are more and more working scenarios that require the simultaneous transmission of electrical signals and fluid media such as hydraulic oil. However, the existing cable reels have relatively single functions and cannot meet the transportation of fluid media such as hydraulic oil at the same time, so corresponding reels have to be added separately; and during the construction operation process, when the two reels are set at the same time, it occupies the space of the construction site, making the construction site messy and may affect the construction operation, and may even cause certain accidents. Summary of the Utility Model

[0005] In order to solve the technical problem in the prior art that the reel cannot collect and release cables and pipelines at the same time, the utility model provides a hybrid rotary joint and an electro-hydraulic reel, which can collect and release cables and pipelines at the same time and avoid using two reels.

[0006] In a first aspect, the present utility model provides a hybrid rotary joint to solve the above technical problems, including a rotating shaft, and further comprising: a fluid joint rotor and a fluid joint stator, wherein the fluid joint rotor is coaxially connected to one end of the rotating shaft, the fluid joint rotor is rotatably arranged inside the fluid joint stator, an output hole and a return hole are arranged on the fluid joint stator, an output channel and a return channel are arranged on the fluid joint rotor, both the output channel and the return channel include annular grooves arranged on the outer circumferential surface of the fluid joint rotor, the annular groove of the output channel is communicated with the output hole, and the annular groove of the return channel is communicated with the return hole; a slip ring rotor and a slip ring stator, the slip ring rotor is coaxially connected to the other end of the rotating shaft, the slip ring rotor is rotatably arranged inside the slip ring stator, a conductive ring is circumferentially arranged around the outer circumference of the slip ring rotor, a conductive ring column is arranged on the slip ring stator, and the conductive column is in contact with the conductive ring; the rotating shaft is of a hollow structure, a wire passing hole is arranged on the rotating shaft, a delivery pipe, a return pipe and a cable penetrate through the wire passing hole, the delivery pipe is communicated with the output channel, the return pipe is communicated with the return channel, and the cable is electrically connected to the conductive ring.

[0007] By providing a fluid joint rotor, a fluid joint stator, a slip ring rotor and a slip ring stator, the present utility model can simultaneously achieve the rotary transmission of fluids and electrical signals, meet the requirements for the transmission of media such as hydraulic oil and electrical signals simultaneously, and provide a technical basis for collecting and releasing cables and pipes through a single reel.

[0008] Furthermore, both the output channel and the return channel further include straight holes axially arranged inside the fluid joint rotor.

[0009] Furthermore, a sealing ring is arranged between the fluid joint rotor and the fluid joint stator.

[0010] Furthermore, the conductive column includes a first conductive part and a second conductive part, the first conductive part and the second conductive part are coaxially arranged along the radial direction of the slip ring stator, a spring is arranged between the first conductive part and the second conductive part, and the second conductive part is in contact with the conductive ring.

[0011] By setting the conductive column to be split, the present utility model can ensure close contact with the conductive ring and guarantee the reliable transmission of electrical signals.

[0012] Furthermore, the rotating shaft is connected to the fluid joint rotor and the slip ring rotor by bolts.

[0013] Furthermore, wire routing holes are arranged on both the fluid joint stator and the slip ring stator.

[0014] In a second aspect, the present utility model further provides a electro-hydraulic reel, which includes a bracket and a reel body, and further includes the above-mentioned hybrid rotary joint. The stator of the fluid joint and the stator of the electric slip ring are arranged on the bracket. The rotor of the electric slip ring or the rotor of the fluid joint is connected to a driving assembly, and the driving assembly is arranged on the bracket. The reel body is coaxially arranged on the rotating shaft and can rotate together with the rotating shaft. The delivery pipe, the return pipe and the cable all pass through the reel body and are wound around the reel body.

[0015] Furthermore, after the delivery pipe and the cable extend out of the reel body, an electro-hydraulic composite pipe with an integrated structure is adopted. The electro-hydraulic composite pipe and the return pipe are wrapped into a wire harness by a wrapping layer, and the wire harness is wound around the sleeve of the reel body.

[0016] By adopting the electro-hydraulic composite pipe and wrapping it with the return pipe to form a wire harness, the present utility model makes the pipeline and the cable into a wire harness, which is convenient for collection and release.

[0017] Furthermore, the driving assembly includes a driving motor. The driving motor is connected to a transmission shaft through a belt transmission mechanism. The transmission shaft is rotatably arranged on the bracket and is connected to the rotor of the electric slip ring.

[0018] From the above technical solutions, it can be seen that the present utility model has the following advantages:

[0019] The present utility model provides a hybrid rotary joint and an electro-hydraulic reel. By setting the rotor of the fluid joint and the stator of the fluid joint, the rotor of the electric slip ring and the stator of the electric slip ring, the rotary transmission of fluid and electrical signals can be realized simultaneously, meeting the requirements for the transmission of media such as hydraulic oil and electrical signals at the same time, and providing a technical basis for collecting and releasing cables and pipelines through one reel; by setting the conductive columns as separate parts, the close contact with the conductive ring can be ensured, guaranteeing the reliable transmission of electrical signals; by adopting the electro-hydraulic composite pipe and wrapping it with the return pipe to form a wire harness, the pipeline and the cable are made into a wire harness, which is convenient for collection and release. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Structural schematic diagram of the first specific embodiment of the present utility model Figure 1 .

[0022] Figure 2Structural schematic diagram of the first specific embodiment of the present utility model Figure 2 。

[0023] Figure 3 Schematic diagram of the assembly structure of the fluid joint rotor and the fluid joint stator in the first specific embodiment of the present utility model

[0024] Figure 4 Schematic diagram of the assembly structure of the electric slip ring rotor and the electric slip ring stator in the first specific embodiment of the present utility model

[0025] Figure 5 Schematic diagram of the second specific embodiment of the present utility model

[0026] In the figure, 1 is the fluid joint stator; 101 is the output hole; 102 is the return hole; 2 is the fluid joint rotor; 201 is the annular groove; 203 is the straight hole; 3 is the rotating shaft; 301 is the wire passing hole; 4 is the electric slip ring rotor; 401 is the conductive ring; 5 is the electric slip ring stator; 501 is the first conductive part; 502 is the spring; 503 is the second conductive part; 6 is the sealing ring; 7 is the bracket; 8 is the reel body; 9 is the wire harness; 10 is the driving component Specific embodiments

[0027] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this patent The first specific embodiment

[0029] As Figures 1 to 4As shown in the figure, this specific embodiment provides a hybrid rotary joint, which includes a rotating shaft 3, a fluid joint rotor 2, a fluid joint stator 1, a slip ring rotor 4 and a slip ring stator 5. The fluid joint rotor 2 is coaxially connected to one end of the rotating shaft 3. The fluid joint rotor 2 is rotatably arranged inside the fluid joint stator 1. The fluid joint stator 1 is provided with an output hole 101 and a return hole 102. The output hole 101 and the return hole 102 are arranged radially along the fluid joint stator 1. The fluid joint rotor 2 is provided with an output channel and a return channel. Both the output channel and the return channel include an annular groove 201 arranged on the outer circumferential surface of the fluid joint rotor. The annular groove 201 of the output channel is communicated with the output hole 101, and the annular groove 201 of the return channel is communicated with the return hole 102. The output channel and the return channel also both include a straight hole 203. The straight hole 203 is axially arranged inside the fluid joint rotor 2. The slip ring rotor 4 is coaxially connected to the other end of the rotating shaft 3. The slip ring rotor 4 is rotatably arranged inside the slip ring stator 5. A plurality of conductive rings 401 are arranged around the outer circumference of the slip ring rotor 4. The slip ring stator 5 is provided with a plurality of conductive posts. The conductive posts are in contact with the corresponding conductive rings 401 to achieve the transmission of electrical signals. The rotating shaft 3 is of a hollow structure. A wire passing hole 301 is arranged on the rotating shaft 3. A delivery pipe, a return pipe and a cable penetrate through the wire passing hole 301. A fixing plug made of rubber material is arranged on the wire passing hole 301. The delivery pipe is communicated with the output channel, the return pipe is communicated with the return channel, and the cable is electrically connected to the conductive ring 401. Preferably, conductive studs are arranged radially along the inner wall of the conductive ring 401, and the cable is electrically connected to the conductive studs.

[0030] By setting the fluid joint rotor 2 and the fluid joint stator 1, the slip ring rotor 4 and the slip ring stator 5, this specific embodiment can simultaneously achieve the rotary transmission of fluid and electrical signals, meet the requirements for the transmission of fluid media such as hydraulic oil and electrical signals at the same time, and provide a technical basis for the collection and release of cables and pipelines through a single reel.

[0031] As Figure 3 shown, in order to prevent fluid medium leakage, in this specific embodiment, a sealing ring 6 is arranged between the fluid joint rotor 2 and the fluid joint stator 1, and three sealing rings 6 are arranged.

[0032] As Figure 4 shown, since there is relative rotation between the slip ring rotor 4 and the slip ring stator 5, resulting in frictional wear, in order to ensure the contact reliability between the conductive ring 401 and the conductive post, in this specific embodiment, the conductive post includes a first conductive part 501 and a second conductive part 503. The first conductive part 501 and the second conductive part 503 are coaxially arranged radially along the slip ring stator 5. A spring 502 is arranged between the first conductive part 501 and the second conductive part 503. The second conductive part 503 is in contact with the conductive ring 401.

[0033] For the convenience of assembly, the rotating shaft 3 is connected to the fluid joint rotor 2 and the electric slip ring rotor 4 by bolts; specifically, flange plates are provided on the end faces of the fluid joint rotor 2 and the electric slip ring rotor 4 and at both ends of the rotating shaft 3, and the corresponding two flange plates are connected by bolts.

[0034] For the convenience of wiring, in this specific embodiment, wire holes are axially provided on both the fluid joint stator 1 and the electric slip ring stator 5.

[0035] The working process of this hybrid rotary joint is as follows:

[0036] During operation, the fluid joint rotor 2, the electric slip ring rotor 4, and the rotating shaft 3 rotate under an external force, the fluid joint stator 1 and the electric slip ring stator 5 do not rotate, the output hole 101 and the output channel remain connected, and the fluid sequentially passes through the output hole 101, the annular groove 201, and the straight hole 203 of the output channel and enters the delivery pipe, and is transmitted to each device by the delivery pipe. The fluid in the loop of the device sequentially enters the oil return hole through the straight hole 203 and the annular groove 201 of the return channel and flows back to the container through the oil return hole; the conductive column and the conductive ring 401 always remain in contact, and the conductive ring 401 transmits the electrical signal from the cable to the device. Specific Embodiment 2

[0038] As Figure 5 shown, this specific embodiment provides an electro-hydraulic reel, which includes a bracket 7 and a reel body 8, and also includes the hybrid rotary joint of Specific Embodiment 1. The fluid to be transported is hydraulic oil. The fluid joint stator 1 and the electric slip ring stator 5 are arranged on the bracket 7 by bolts. The electric slip ring rotor 4 or the fluid joint rotor 2 is connected to the driving assembly 10. In this specific embodiment, the electric slip ring rotor 4 is connected to the driving assembly 10, and the driving assembly 10 is arranged on the bracket 7. The reel body 8 is coaxially arranged on the rotating shaft 3 and can rotate together with the rotating shaft 3. The delivery pipe, the return pipe, and the cable all pass through the reel body 8 and are wound around the reel body 8; specifically, the reel body 8 includes a sleeve and limit disks at both ends of the sleeve. The sleeve is sleeved on the outer circumference of the rotating shaft 3. A pin shaft is radially penetrated through the sleeve, the pin shaft penetrates through the rotating shaft 3, and split pins are arranged at both ends of the pin shaft. A plurality of wire holes 301 are provided on the sleeve, and the delivery pipe, the return pipe, and the cable all pass through the wire holes 301.

[0039] This further facilitates the collection and release of cables and pipes. After the delivery pipe and the cable extend out of the reel body 8, an electro-hydraulic composite pipe with an integrated structure is adopted. The electro-hydraulic composite pipe and the return pipe are wrapped into a wire harness 9 by a wrapping layer, and the wire harness 9 is wound around the sleeve of the reel body 8. The electro-hydraulic composite pipe is a product that can be purchased on the market and mainly consists of a pipe body, an electrolyte cavity, connection bolts, etc. The pipe body is used to transmit hydraulic oil and is connected to the delivery pipe in this specific embodiment, while the electrolyte cavity is used to transmit electrical signals. Each electrolyte cavity is sealed and filled with electrolyte. One end of the cavity is provided with a first connection bolt for electrically connecting to a power supply device and is connected to the conductive column in this specific embodiment, and the other end is provided with a second connection bolt for electrically connecting to an electrical component.

[0040] In this specific embodiment, the drive assembly 10 can adopt the following specific structure: The drive assembly 10 includes a drive motor. The drive motor is connected to a drive shaft through a belt drive mechanism. The drive shaft is rotatably arranged on the bracket 7 and is connected to the electro-slip ring rotor 4.

[0041] It can be seen from the above specific embodiments that the present utility model has the following beneficial effects:

[0042] 1. By providing the fluid joint rotor 2 and the fluid joint stator 1, the electro-slip ring rotor 4 and the electro-slip ring stator 5, the rotational transmission of fluids and electrical signals can be achieved simultaneously, meeting the requirements for the transmission of fluid media such as hydraulic oil and electrical signals at the same time, and providing a technical basis for the collection and release of cables and pipes through one reel.

[0043] 2. By setting the conductive column to be split, it can ensure close contact with the conductive ring 401 and guarantee the reliable transmission of electrical signals.

[0044] 3. By adopting the electro-hydraulic composite pipe and wrapping it with the return pipe into a wire harness 9, the pipes and cables are made into a wire harness 9, which is convenient for collection and release.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hybrid rotary joint, comprising a rotating shaft (3), characterized in that, Further comprising: A fluid joint rotor (2) and a fluid joint stator (1), wherein the fluid joint rotor (2) is coaxially connected to one end of the rotating shaft (3), the fluid joint rotor (2) is rotatably arranged inside the fluid joint stator (1), an output hole (101) and a return hole (102) are arranged on the fluid joint stator (1), an output channel and a return channel are arranged on the fluid joint rotor (2), both the output channel and the return channel include an annular groove (201) arranged on the outer circumferential surface of the fluid joint rotor, the annular groove (201) of the output channel is communicated with the output hole (101), and the annular groove (201) of the return channel is communicated with the return hole (102); A slip ring rotor (4) and a slip ring stator (5), wherein the slip ring rotor (4) is coaxially connected to the other end of the rotating shaft (3), the slip ring rotor (4) is rotatably arranged inside the slip ring stator (5), a conductive ring (401) is arranged around the outer circumference of the slip ring rotor (4), a conductive column is arranged on the slip ring stator (5), and the conductive column is in contact with the conductive ring (401); The rotating shaft (3) is of a hollow structure, a wire passing hole (301) is arranged on the rotating shaft (3), a delivery pipe, a return pipe and a cable penetrate through the wire passing hole (301), the delivery pipe is communicated with the output channel, the return pipe is communicated with the return channel, and the cable is electrically connected to the conductive ring (401).

2. The hybrid rotary joint according to claim 1, wherein Both the output channel and the return channel further include straight holes (203), and the straight holes (203) are axially arranged inside the fluid joint rotor (2).

3. The hybrid rotary joint according to claim 2, characterized in that, A sealing ring (6) is arranged between the fluid joint rotor (2) and the fluid joint stator (1).

4. The hybrid rotary joint according to claim 3, wherein The conductive column includes a first conductive part (501) and a second conductive part (503), the first conductive part (501) and the second conductive part (503) are coaxially arranged along the radial direction of the slip ring stator (5), a spring (502) is arranged between the first conductive part (501) and the second conductive part (503), and the second conductive part (503) is in contact with the conductive ring (401).

5. The hybrid rotary joint according to claim 4, wherein, The rotating shaft (3) is bolted to both the fluid joint rotor (2) and the slip ring rotor (4).

6. The hybrid rotary joint according to claim 5, wherein Both the fluid joint stator (1) and the slip ring stator (5) are provided with wire routing holes.

7. An electro-hydraulic reel, comprising a bracket (7) and a reel body (8), characterized in that, Further comprising the hybrid rotary joint as claimed in claim 6, wherein the fluid joint stator (1) and the slip ring stator (5) are arranged on the bracket (7), the slip ring rotor (4) or the fluid joint rotor (2) is connected to the driving assembly (10), the driving assembly (10) is arranged on the bracket (7), the reel body (8) is coaxially arranged on the rotating shaft (3) and can rotate together with the rotating shaft (3), and the delivery pipe, the return pipe and the cable all pass through the reel body (8) and are wound around the reel body (8).

8. The electro-hydraulic reel according to claim 7, wherein, After the conveying pipe and the cable extend out of the reel body (8), an electro-hydraulic composite pipe with an integrated structure is adopted. The electro-hydraulic composite pipe and the return pipe are wrapped into a wire harness (9) through a wrapping layer, and the wire harness (9) is wound around the sleeve of the reel body (8).

9. The electro-hydraulic reel according to claim 7, wherein The driving assembly (10) includes a driving motor. The driving motor is connected to a transmission shaft through a belt transmission mechanism. The transmission shaft is rotatably arranged on a bracket (7) and is connected to the electro-slip ring rotor (4).

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