Combined rotary joint

Abstract

The utility model provides a combined rotary joint, which comprises an outer sleeve, an insulating inner sleeve, a guide shaft, two groups of medium conduction mechanisms and an electric communication mechanism, the insulating inner sleeve is arranged in the outer sleeve, and two ends of the outer sleeve are respectively provided with a rear gland and a front gland; the guide shaft is arranged in the insulating inner sleeve, the rear gland is rotatably connected with the guide shaft, the front gland is rotatably sleeved on the guide shaft, and an annular electrode plate is arranged in the guide shaft; the two groups of medium conduction mechanisms are respectively arranged on the guide shaft, and each medium conduction mechanism comprises a medium guide groove, a guide ring opening, a conduction pipe and a guide hole; the electric connection mechanism is arranged on the outer sleeve and comprises an electric interface, a conductive bolt and a wire pressing structure. Therefore, electricity can be combined to achieve electricity transmission, meanwhile, conduction transmission of oil and gas media is considered, and it is ensured that the rotary joint can provide effective medium transmission conduction for different types of collapsible cylinders.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary joints, in particular to a combined rotary joint. Background Art

[0002] During the use of the expansion and contraction cylinder, there are working scenarios that require rotation. The expansion and contraction cylinder can rotate with the shaft, but the power supply and oil supply tank components of the expansion and contraction cylinder cannot rotate. Traditionally, a rotary joint is used to solve the problem of expansion and contraction cylinder rotation.

[0003] However, most existing rotary joints are integrated structures with complex structures and can only transmit a single medium. However, the expansion and contraction cylinder can be controlled by oil and gas, and there may also be power supply problems. Existing rotary joints may not be able to provide multiple combinations of media conduction. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the purpose of the present invention is to propose a combined rotary joint that can combine electricity to achieve electrical transmission while taking into account the conduction and transmission of oil and gas media, ensuring that the rotary joint can provide effective medium transmission conduction for different types of expansion and contraction cylinders.

[0006] To achieve the above-mentioned purpose, the utility model proposes a combined rotary joint, comprising an outer sleeve, an insulating inner sleeve, a guide shaft, two sets of medium conduction mechanisms, and an electrical communication mechanism, wherein the insulating inner sleeve is arranged in the outer sleeve, and a rear pressure cover and a front pressure cover are respectively provided at both ends of the outer sleeve; the guide shaft is arranged in the insulating inner sleeve, the rear pressure cover is rotatably connected to the guide shaft, and the front pressure cover is rotatably sleeved on the guide shaft, and an annular electrode plate is provided in the guide shaft; two sets of the medium conduction mechanisms are respectively arranged on the guide shaft, and the medium conduction mechanisms include a medium guide groove, a guide ring opening, a conduction tube and a guide hole, In which, the medium guide groove is opened on the guide shaft, the guide ring opening is opened on the insulating inner sleeve, the conducting tube is arranged on the guide shaft and is connected with the medium guide groove and the guide ring opening, the guide hole is arranged on the outer sleeve and is connected with the guide ring opening; the electrical connection mechanism is arranged on the outer sleeve, and the electrical connection mechanism includes an electrical interface, a conductive bolt and a wire pressing structure, wherein the electrical interface is opened on the outer sleeve, the conductive bolt is arranged on the insulating inner sleeve and is threadedly connected to it, the top of the conductive bolt is located in the electrical interface, and the wire pressing structure is arranged in the electrical interface.

[0007] According to the combined rotary joint of the utility model, the electric power can be combined to realize the transmission of electricity, while taking into account the conduction transmission of oil and gas media, ensuring that the rotary joint can provide effective medium transmission conduction for different types of expansion and contraction cylinders.

[0008] In addition, the combined rotary joint proposed in the application may also have the following additional technical features:

[0009] Specifically, deep groove ball bearings are provided at both ends of the guide shaft, and the rear pressure cover and the front pressure cover are respectively connected to the two deep groove ball bearings.

[0010] Specifically, a flange is sleeved on the guide shaft.

[0011] Specifically, the wire pressing structure includes an insulating wire pressing plate, a ring support plate, an adjusting stud, two guide rods and two guide plates, wherein the insulating wire pressing plate is arranged above the conductive bolt, the insulating wire pressing plate is a ring structure, the ring support plate is arranged above the insulating wire pressing plate and is connected to the electrical interface, and the adjusting stud is rotatably arranged on the insulating wire pressing plate and is threadedly connected to the ring support plate.

[0012] Specifically, guide grooves are provided at both ends of the electrical interface, the two guide rods are arranged in the guide grooves, the two guide plates are arranged in the guide grooves and are connected to the insulating wire pressing plate, and the guide rods pass through the guide plates.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0015] Figure 1 This is a structural diagram of a combined rotary joint according to an embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional view of a combined rotary joint according to an embodiment of the present invention;

[0017] Figure 3 This is an enlarged cross-sectional view of an electrical connection mechanism according to an embodiment of the present invention.

[0018] As shown in the figure: 1. Outer sleeve; 11. Rear gland; 12. Front gland; 13. Deep groove ball bearing; 2. Insulating inner sleeve; 3. Guide shaft; 31. Electrode plate; 32. Flange; 4. Dielectric conduction mechanism; 41. Dielectric guide groove; 42. Guide ring mouth; 43. Conducting tube; 44. Guide hole; 5. Electrical connection mechanism; 51. Electrical interface; 52. Conductive bolt; 53. Wire pressing structure; 531. Insulating wire pressing plate; 532. Ring support plate; 533. Adjusting stud; 534. Guide rod; 535. Guide plate. DETAILED DESCRIPTION

[0019] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0020] The combined rotary joint according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0021] like Figure 1-Figure 3 As shown, the combined rotary joint of the embodiment of the present utility model includes an outer sleeve 1, an insulating inner sleeve 2, a guide shaft 3, two sets of dielectric conducting mechanisms 4, and an electrical connecting mechanism 5.

[0022] The insulating inner sleeve 2 is arranged in the outer sleeve 1, and the two ends of the outer sleeve 1 are respectively provided with a rear gland 11 and a front gland 12.

[0023] It should be noted that the insulating inner sleeve 2 is made of high-strength insulating material, which can prevent industrial current breakdown. The area of ​​the outer sleeve 1 where the electrical connection mechanism 5 is set is also made of insulating material. The outer sleeve 1 enhances the strength of the rotary joint. The front pressure cover 12 and the rear pressure cover 11 fix the rotary joint as a whole and seal the two ends of the outer sleeve 1 and the insulating inner sleeve 2.

[0024] The guide shaft 3 is disposed in the insulating inner sleeve 2 , the rear gland 11 is rotatably connected to the guide shaft 3 , the front gland 12 is rotatably sleeved on the guide shaft 3 , and an annular electrode plate 31 is disposed in the guide shaft 3 .

[0025] It should be noted that the guide shaft 3 is the main component of the rotary joint, which is rotatably connected to the insulating inner sleeve 2 to ensure the rotatability of the rotary joint. The outer portion of the guide shaft 3 is made of insulating material, and an annular electrode plate 31 is arranged inside to realize electrical transmission. An interface can be set on the electrode plate 31 to facilitate the connection of external wires.

[0026] The two sets of medium conducting mechanisms 4 are respectively arranged on the guide shaft 3 , and the medium conducting mechanisms 4 include a medium guide groove 41 , a guide ring opening 42 , a conducting pipe 43 and a guide hole 44 .

[0027] Among them, the medium guide groove 41 is opened on the guide shaft 3, the guide ring opening 42 is opened on the insulating inner sleeve 2, the conducting tube 43 is arranged on the guide shaft 3 and is connected with the medium guide groove 41 and the guide ring opening 42, and the guide hole 44 is arranged on the outer sleeve 1 and is connected with the guide ring opening 42.

[0028] It should be noted that there are two sets of medium conducting mechanisms 4, so there are two corresponding medium guide grooves 41, guide ring openings 42, conducting pipes 43 and guide holes 44, which enable the rotary joint to conduct and transmit two media at the same time.

[0029] It can be understood that the medium guide groove 41 and the conducting tube 43 are arranged on the guide shaft 3, and the guide ring mouth 42 is arranged on the insulating inner sleeve 2. The conducting tube 43 is connected with the guide ring mouth 42. Therefore, no matter how the guide shaft 3 rotates, the transported medium can enter the guide ring mouth 42. The guide ring mouth 42 is connected with the guide hole 44, and the medium is guided out through the guide hole 44 to realize the conduction of the entire rotary joint.

[0030] The electrical connection mechanism 5 is provided on the outer shell 1 , and includes an electrical interface 51 , a conductive bolt 52 and a wire pressing structure 53 .

[0031] Among them, the electrical interface 51 is opened on the outer sleeve 1, the conductive bolt 52 is set on the insulating inner sleeve 2 and is threadedly connected to it, the top of the conductive bolt 52 is located in the electrical interface 51, and the wire pressing structure 53 is set in the electrical interface 51.

[0032] It should be noted that the electrical interface 51 is used to connect the wires, and the conductive bolt 52 arranged inside is attached to the electrode plate 31, and the circuit is connected. The conductive bolt 52 is threadedly connected to the insulating inner sleeve 2. When the electrode plate 31 is worn to a certain extent and a circuit is broken, the conductive bolt 52 can be rotated to re-attach the conductor, and the wire pressing structure 53 can press the external wire onto the conductive bolt 52 and fix it to achieve circuit connection.

[0033] A cross-shaped groove may be provided on the conductive bolt 52 to facilitate the use of an insulating screwdriver to control its rotation.

[0034] Wherein, deep groove ball bearings 13 are provided at both ends of the guide shaft 3 , and the rear pressure cover 11 and the front pressure cover 12 are connected to the two deep groove ball bearings 13 respectively.

[0035] It should be noted that the deep groove ball bearings 13 at both ends of the guide shaft 3 have a sealing effect, and sealing oil can be added to the gaps on the deep groove ball bearings 13 and between the components to further improve the sealing effect of the rotary joint.

[0036] A flange 32 is sleeved on the guide shaft 3 .

[0037] It can be understood that the flange 32 is provided to facilitate connection and fixation with external pipelines and lines for conveying media.

[0038] Specifically, personnel connect the media pipeline to the flange 32. External wires are connected through the interface on the electrode plate 31. The media pipeline is connected to the media guide groove 41. At the output, the external pipeline is connected to the guide hole 44. The external wires are fed into the electrical interface 51. The wire pressing structure 53 presses the wires onto the conductive bolt 52 to connect the components. The outer sleeve 1 drives the insulating inner sleeve 2 to rotate on the guide shaft 3, while still maintaining the transmission of the internal medium.

[0039] In the event of a circuit breaker, the relevant staff can penetrate into the electrical interface 51 and use an insulated screwdriver to rotate the conductive bolt 52 so that the conductive bolt 52 contacts the electrode plate 31 again.

[0040] In one embodiment of the present invention, Figure 2 and Figure 3 As shown, the wire pressing structure 53 includes an insulating wire pressing plate 531 , a ring support plate 532 , an adjusting screw 533 , two guide rods 534 and two guide plates 535 .

[0041] Among them, the insulating wire pressing plate 531 is arranged above the conductive bolt 52, the insulating wire pressing plate 531 is a ring structure, the ring support plate 532 is arranged above the insulating wire pressing plate 531 and is connected to the electrical interface 51, and the adjusting stud 533 is rotatably set on the insulating wire pressing plate 531 and is threadedly connected to the ring support plate 532.

[0042] It should be noted that the insulating wire pressing plate 531 is supported by the ring support plate 532 and the adjusting stud 533. The adjusting stud 533 is threadedly connected to the ring support plate 532, and the adjusting stud 533 is rotatably connected to the insulating wire pressing plate 531. When the adjusting stud 533 rotates, the insulating wire pressing plate 531 at the bottom can be driven to move up and down to realize the wire pressing function.

[0043] The insulating wire pressing plate 531 is made of insulating material to avoid short circuit problems, and also plays a certain insulating protection function.

[0044] The insulating wire pressing plate 531 and the ring support plate 532 are both annular structures, and the hole at the center thereof facilitates subsequent entry into the electrical interface 51 to control the conductive bolt 52.

[0045] In order to clearly illustrate the above embodiment, in one embodiment of the present application, Figure 2 and Figure 3 As shown, guide grooves are provided at both ends of the electrical interface 51 , two guide rods 534 are arranged in the guide grooves, two guide plates 535 are arranged in the guide grooves and connected to the insulating wire pressing plate 531 , and the guide rods 534 pass through the guide plates 535 .

[0046] It is understandable that the guide rod 534 and the guide plate 535 play a guiding and limiting role on the insulating wire pressing plate 531, thereby preventing the insulating wire pressing plate 531 from moving up and down unstably under the control of the adjusting screw 533, thereby affecting the fixation of the wire.

[0047] Specifically, the relevant personnel insert the external wire into the electrical interface 51, connect the wire to the top of the conductive bolt 52, control the adjustment stud 533 to rotate, drive the insulating wire pressing plate 531 to press down, and tighten the wire to the conductive bolt 52 to achieve electrical conduction.

[0048] In summary, the combined rotary joint of the embodiment of the utility model can combine electricity to realize electrical transmission, while taking into account the conductive transmission of oil and gas media, ensuring that the rotary joint can provide effective medium transmission conduction for different types of expansion and contraction cylinders.

[0049] In this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A combined rotary joint, characterized in that: It includes an outer sleeve, an insulating inner sleeve, a guide shaft, two sets of dielectric conduction mechanisms, and an electrical connection mechanism, wherein: The insulating inner sleeve is arranged in the outer sleeve, and the two ends of the outer sleeve are respectively provided with a rear gland and a front gland; The guide shaft is arranged in the insulating inner sleeve, the rear gland is rotatably connected to the guide shaft, the front gland is rotatably sleeved on the guide shaft, and an annular electrode plate is arranged in the guide shaft; The two groups of medium conducting mechanisms are respectively arranged on the guide shaft, and the medium conducting mechanisms include a medium guide groove, a guide ring opening, a conducting tube and a guide hole, wherein: The medium guide groove is provided on the guide shaft, the guide ring opening is provided on the insulating inner sleeve, the conducting tube is provided on the guide shaft and communicates with the medium guide groove and the guide ring opening, and the guide hole is provided on the outer sleeve and communicates with the guide ring opening; The electrical connection mechanism is provided on the outer shell, and the electrical connection mechanism includes an electrical interface, a conductive bolt and a wire pressing structure, wherein: The electrical interface is opened on the outer sleeve, the conductive bolt is arranged on the insulating inner sleeve and is threadedly connected to the insulating inner sleeve, the top of the conductive bolt is located in the electrical interface, and the wire pressing structure is arranged in the electrical interface.

2. The combined rotary joint according to claim 1, characterized in that: Deep groove ball bearings are provided at both ends of the guide shaft, and the rear pressure cover and the front pressure cover are respectively connected to the two deep groove ball bearings.

3. The combined rotary joint according to claim 1, characterized in that: A flange is sleeved on the guide shaft.

4. The combined rotary joint according to claim 1, characterized in that: The wire pressing structure includes an insulating wire pressing plate, a ring support plate, an adjusting stud, two guide rods and two guide plates, wherein: The insulating wire pressing plate is arranged above the conductive bolt, the insulating wire pressing plate is an annular structure, the annular support plate is arranged above the insulating wire pressing plate and is connected to the electrical interface; The adjusting stud is rotatably arranged on the insulating wire pressing plate and is threadably connected to the ring support plate.

5. The combined rotary joint according to claim 4, characterized in that: Guide grooves are provided at both ends of the electrical interface, two guide rods are arranged in the guide grooves, two guide plates are arranged in the guide grooves and connected to the insulating wire pressing plate, and the guide rods pass through the guide plates.

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