WO2022068286A1 - Hydraulic rotary joint, electro-hydraulic rotary connecting device and operating vehicle - Google Patents

Hydraulic rotary joint, electro-hydraulic rotary connecting device and operating vehicle Download PDF

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Publication number
WO2022068286A1
WO2022068286A1 PCT/CN2021/102277 CN2021102277W WO2022068286A1 WO 2022068286 A1 WO2022068286 A1 WO 2022068286A1 CN 2021102277 W CN2021102277 W CN 2021102277W WO 2022068286 A1 WO2022068286 A1 WO 2022068286A1
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WO
WIPO (PCT)
Prior art keywords
openings
hydraulic rotary
rotary joint
hydraulic
mandrel
Prior art date
Application number
PCT/CN2021/102277
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French (fr)
Chinese (zh)
Inventor
贺电
耿晓晨
谢天贶
Original Assignee
三一汽车制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202022210722.3U external-priority patent/CN212455894U/en
Priority claimed from CN202011063527.0A external-priority patent/CN112082027A/en
Application filed by 三一汽车制造有限公司 filed Critical 三一汽车制造有限公司
Publication of WO2022068286A1 publication Critical patent/WO2022068286A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F16L39/06—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies of the multiline swivel type, e.g. comprising a plurality of axially mounted modules

Definitions

  • the present application relates to the technical field of connection of electro-hydraulic rotary joints, and in particular, to a hydraulic rotary joint, an electro-hydraulic rotary connection device, and a work vehicle.
  • the diameter of the axial opening of the hydraulic rotary joint in the related art is relatively large, so that the volume of the hydraulic rotary joint in the related art is relatively large.
  • the diameter of the axial opening can be reduced to reduce the volume of the hydraulic rotary joint.
  • the axial openings in the hydraulic rotary joint in the related art are arranged in a one-to-one correspondence with the second openings on the housing.
  • the diameter of the axial openings is reduced, the flow capacity of the hydraulic rotary joint will inevitably decrease, and it is impossible to Meet the large flow requirements of hydraulic rotary joints. Therefore, it is urgent to develop a hydraulic rotary joint with large flow capacity and small volume.
  • the present application aims to solve at least one of the technical problems existing in the prior art or related technologies.
  • an object of the present application is to provide a hydraulic rotary joint.
  • Another object of the present application is to provide an electro-hydraulic rotary connection device.
  • Another object of the present application is to provide a work vehicle.
  • the hydraulic swivel joint includes: a mandrel with a plurality of axial openings and a plurality of first openings, and the plurality of axial openings are along the mandrel
  • the circumference of the first hole is spaced apart, and the plurality of axial openings are arranged in a one-to-one correspondence with the plurality of first openings, one end of the first opening is connected to the axial opening, and the other end of the first opening is located on the outer circumference of the mandrel
  • the outer shell is sleeved on the outer circumference of the mandrel, and along the axial direction of the outer shell, the outer shell is provided with second openings at intervals; wherein, one second opening communicates with at least two first openings.
  • a large-diameter axial opening is set to a plurality of small-diameter axial openings, and a plurality of first openings are correspondingly arranged in a one-to-one correspondence with the plurality of axial openings.
  • a second opening is set to communicate with the plurality of first openings at the same time.
  • hydraulic rotary joint in the above embodiments provided by the present application may also have the following additional technical features:
  • the mandrel is further provided with an axial through hole, and the axial through hole penetrates the mandrel along the axial direction of the mandrel.
  • the axial through hole is used as a through hole to facilitate the passage of the conveying pipeline of the pumped product, thus ensuring that the conveying pipeline can be installed smoothly, thereby ensuring that the pumped product can work normally.
  • a plurality of first openings are arranged along the radial direction of the mandrel; the second openings include at least two, the outer end of each second opening is located outside the casing, and each second opening The inner end of the opening is communicated with the at least two first openings through the circumferential annular groove.
  • the first opening is extended in the radial direction of the mandrel, that is, the first opening is a straight hole, which avoids the difficult and costly processing caused by setting the first opening as an oblique hole.
  • the problem is that this improves the convenience of processing the first hole, and at the same time reduces the processing and manufacturing cost of the hydraulic rotary joint.
  • the housing includes a housing and a plurality of protrusions disposed on the housing, the plurality of protrusions protrude in a direction away from the mandrel along the radial direction of the housing, and the outer surfaces of the plurality of second openings protrude in a direction away from the mandrel.
  • the ends are arranged on the plurality of protrusions in a one-to-one correspondence.
  • a plurality of protrusions can be matched and connected with a plurality of external connecting pipelines in a one-to-one correspondence, such as a snap connection or a locking connection, and a snap connection mechanism or a locking mechanism on the connecting pipeline can be locked on the protrusions.
  • a snap connection or a locking connection such as a snap connection or a locking connection
  • a snap connection mechanism or a locking mechanism on the connecting pipeline can be locked on the protrusions.
  • the hydraulic rotary joint further includes a plurality of seals, and the plurality of seals are arranged between the mandrel and the housing.
  • the plurality of seals include O-rings and/or metal lip seals.
  • the seal can prevent external dust or particles from entering the annular space formed between the mandrel and the housing to contaminate the oil circuit in the hydraulic rotary joint, thereby ensuring that the medium output from the hydraulic rotary joint can meet its subsequent use. cleanliness requirements.
  • the seal can separate multiple oil circuits in the hydraulic rotary joint, preventing the multiple oil circuits in the hydraulic rotary joint from channeling each other and affecting the flow capacity of the hydraulic rotary joint, thereby ensuring that the hydraulic rotary joint can meet the flow requirements. .
  • the O-ring seal is cheap and has a wide range of specifications and sizes, which facilitates the subsequent maintenance and replacement of the seal, thereby saving the maintenance and maintenance costs of the hydraulic rotary joint.
  • the seal can also use a lip-type metal sealing ring.
  • the mandrel has a first end face and a second end face that is arranged away from the first end face, the mandrel is provided with a plurality of sealing grooves arranged at intervals along the axial direction, and the plurality of seals are arranged in the plurality of In each of the sealing grooves, at least one sealing groove is disposed between the second opening of the plurality of second openings that is closest to the first end face and the first end face, and the second opening of the plurality of second openings that is closest to the second end face At least one sealing groove is provided between the two openings and the second end face, and at least one sealing groove is provided between any two adjacent second openings among the plurality of second openings.
  • the seals disposed on the sealing grooves close to the first end face and close to the second end face are used to prevent external dust or particles from entering the annular space formed between the mandrel and the housing to contaminate the hydraulic rotary joint
  • the internal oil circuit so as to ensure that the medium output from the hydraulic rotary joint meets the cleanliness requirements of its subsequent use.
  • the seals provided between any two adjacent second openings above are used to separate multiple oil circuits in the hydraulic rotary joint, so as to prevent the multiple oil circuits in the hydraulic rotary joint from channeling each other and affecting the performance of the hydraulic rotary joint. Flow capacity, thus ensuring that the hydraulic rotary joint can meet the flow requirements.
  • the casing has a third end face and a fourth end face disposed away from the third end face, the casing is provided with a plurality of sealing grooves spaced apart in the axial direction, and the plurality of seals are arranged in the plurality of seals.
  • at least one sealing groove is provided between the second opening of the plurality of second openings that is closest to the third end surface and the third end surface, and the second opening of the plurality of second openings that is closest to the fourth end surface.
  • At least one sealing groove is provided between the hole and the fourth end surface, and at least one sealing groove is provided between any two adjacent second openings among the plurality of second openings.
  • the seals provided on the sealing grooves near the third end face and the fourth end face are used to prevent external dust or particles from entering the annular space formed between the mandrel and the housing to contaminate the hydraulic rotary joint
  • the internal oil circuit so as to ensure that the medium output from the hydraulic rotary joint meets the cleanliness requirements of its subsequent use.
  • the seals provided between any two adjacent second openings above are used to separate multiple oil circuits in the hydraulic rotary joint, so as to prevent the multiple oil circuits in the hydraulic rotary joint from channeling each other and affecting the performance of the hydraulic rotary joint. Flow capacity, thus ensuring that the hydraulic rotary joint can meet the flow requirements.
  • the technical solution of the second aspect of the present application provides an electro-hydraulic rotary connection device.
  • the electro-hydraulic rotary connection device includes the hydraulic rotary joint according to any one of the technical solutions of the first aspect and an electric rotary joint sleeved on the outer circumference of the hydraulic rotary joint. slip ring.
  • the electro-hydraulic rotary connection device provided by the technical solution of the second aspect of the present application, because it includes the hydraulic rotary joint of any one of the technical solutions of the first aspect, has all the beneficial effects of any of the above-mentioned technical solutions, and will not be repeated here. Repeat.
  • the combination of this nested arrangement makes the structure of the electro-hydraulic rotary connection device compact, saves the space occupied by the hydraulic rotary joint, and does not significantly increase the size of the hydraulic rotary joint.
  • the functional integration of the electric and hydraulic channels of the electro-hydraulic rotary connecting device is realized, thereby meeting the connection requirements of the electro-hydraulic composite of the electro-hydraulic rotary connecting device.
  • the electric slip ring includes: an electric slip ring body, sleeved on the outer circumference of the casing; the electric slip ring rotor outlet end, arranged on the mandrel, between the electric slip ring rotor outlet end and the electric slip ring body A conducting circuit is provided; the outgoing end of the electric slip ring stator is arranged on the electric slip ring body.
  • the rotor outlet end of the electric slip ring is connected to an external power source, which can conduct the external current to the electric slip ring, thereby providing a power source for the rotary motion of the electro-hydraulic rotary connection device, thereby ensuring the electro-hydraulic rotary connection.
  • the device works normally.
  • the electric slip ring transmits power, it can also avoid the problem that the wires are entangled with each other and damaged during the rotation process, so as to ensure that the electro-hydraulic rotary connection device can work normally.
  • the technical solution of the third aspect of the present application provides a working vehicle, including: a chassis; a working device, which is rotatably arranged on the chassis; the hydraulic swivel joint according to any one of the technical solutions of the first aspect, wherein the hydraulic swivel joint is arranged between the chassis and the chassis. between working devices; or the electro-hydraulic slewing connection device as in any one of the technical solutions of the second aspect, the electro-hydraulic slewing connection device is arranged between the chassis and the working device.
  • the work vehicle is provided with a hydraulic swivel joint, so that the work vehicle has the function of swivelly connecting the hydraulic pipeline, so as to meet the connection requirements of the hydraulic pipeline during the on-site pumping operation, and an electro-hydraulic slewing connection device is provided on the work vehicle.
  • the working vehicle has the function of swivel connection of hydraulic pipelines and electric wires, so as to meet the connection requirements of hydraulic pipelines and electric wires during on-site pumping operations, thereby ensuring that on-site pumping operations can be carried out smoothly.
  • FIG. 1 shows a schematic structural diagram of a hydraulic rotary joint according to an embodiment of the present application
  • Figure 2 shows a cross-sectional view of the hydraulic rotary joint A-A in Figure 1;
  • Fig. 3 shows the three-dimensional schematic diagram of the mandrel in Fig. 1;
  • FIG. 4 shows a schematic three-dimensional structure diagram of an electro-hydraulic rotary connection device according to an embodiment of the present application
  • FIG. 5 shows a cross-sectional view of the electro-hydraulic rotary connection device B-B in FIG. 4 .
  • 100 hydraulic rotary joint; 10, mandrel; 11, first end face; 12, axial opening; 13, second end face; 14, first opening; 16, axial through hole; 20, housing; 22, second opening; 23, housing; 24, protrusion; 26, third end face; 28, fourth end face; 30, seal; 400, electro-hydraulic rotary connection device; 40, electric slip ring; 42, electric slip Ring body; 44. Outgoing end of electric slip ring rotor; 46. Outgoing end of electric slip ring stator; 50. Sealing groove.
  • the hydraulic swivel joint 100 and the electro-hydraulic swivel connection device 400 according to some embodiments of the present application are described below with reference to FIGS. 1 to 5 .
  • the hydraulic rotary joint 100 includes a mandrel 10 and a housing 20 .
  • the mandrel 10 has a plurality of axial openings 12 and a plurality of first openings 14 , and the plurality of axial openings 12 are arranged at intervals along the circumferential direction of the mandrel 10 .
  • a plurality of axial openings 12 are arranged in a one-to-one correspondence with a plurality of first openings 14 , one end of the first opening 14 is connected to the axial opening 12 , and the other end of the first opening 14 is located on the outer periphery of the mandrel 10 face.
  • the casing 20 is sleeved on the outer circumference of the mandrel 10 , and along the axial direction of the casing 20 , the casing 20 is provided with second openings 22 at intervals.
  • One second opening 22 communicates with at least two first openings 14 .
  • one large-diameter axial opening 12 is set to a plurality of small-diameter axial openings 12, and correspondingly, a plurality of first openings are arranged in a one-to-one correspondence with the plurality of axial openings 12.
  • a second hole 22 is set to communicate with the first holes 14 at the same time.
  • the hydraulic rotary joint 100 in the present application can reduce its own volume while maintaining the original large flow capacity, thereby making full use of the internal space of the hydraulic rotary joint 100 and solving the limited installation space of the hydraulic rotary joint in the related art.
  • the hydraulic swivel joint cannot meet the large flow requirements of the hydraulic rotary joint, it is ensured that the hydraulic rotary joint 100 in the present application can not only meet the installation requirements of a small space, but also meet the flow requirements of a large flow.
  • the hydraulic rotary joint 100 in this application adopts a distributed oil circuit design (one large-diameter axial opening 12 is separated into a plurality of small-diameter axial openings 12, and a plurality of small-diameter shafts A plurality of first openings 14 are arranged in a one-to-one correspondence with the openings 12, and a second opening 22 is communicated with a plurality of first openings 14 at the same time), so that the larger is smaller, and the same flow capacity is obtained.
  • the size of the hydraulic rotary joint 100 is effectively reduced.
  • the number of axial openings 12 can be set according to the actual flow requirements and installation size requirements of the hydraulic rotary joint 100 .
  • the mandrel 10 is further provided with an axial through hole 16 , and the axial through hole 16 penetrates the mandrel 10 along the axial direction of the mandrel 10 .
  • the axial through hole 16 is used as a through hole to facilitate the passage of the conveying line of the pumped product, thus ensuring that the conveying line can be installed smoothly, thereby ensuring that the pumped product can work normally.
  • a plurality of first openings 14 are extended in the radial direction of the mandrel 10 .
  • the number of the second openings 22 is three, the outer end of each second opening 22 is located outside the housing 20 , and the inner end of each second opening 22 communicates with at least two first openings 14 through a circumferential annular groove .
  • the first opening 14 is extended in the radial direction of the mandrel 10, that is, the first opening 14 is a straight hole, which avoids the difficulty in processing caused by setting the first opening 14 as an oblique hole. In view of the problem of high cost, this improves the convenience of processing the first opening 14 and reduces the processing and manufacturing cost of the hydraulic rotary joint 100 .
  • the housing 20 includes a housing 23 and a plurality of protrusions 24 provided on the housing 23 , and the plurality of protrusions 24 are along the radial direction of the housing 20 . Protruding toward the direction away from the mandrel 10 , the outer ends of the plurality of second openings 22 are disposed on the plurality of protrusions 24 in a one-to-one correspondence.
  • a plurality of protrusions 24 can be connected with a plurality of external connecting pipelines in a one-to-one correspondence, such as a snap connection or a locking connection, and the snap connection mechanism or locking mechanism on the connecting pipeline can be locked on the protrusion 24.
  • On the outer peripheral surface of the connecting line the problem of oil leakage at the connection between the connecting pipeline and the hydraulic rotary joint 100 is avoided, so as to ensure that the connecting pipeline and the hydraulic rotary joint 100 can be correctly connected, thereby ensuring that the hydraulic rotary joint 100 can work normally.
  • the hydraulic rotary joint 100 further includes a plurality of seals 30 , and the plurality of seals 30 are disposed between the mandrel 10 and the housing 20 .
  • the seal 30 can prevent external dust or particles from entering into the annular space formed between the mandrel 10 and the housing 20 to contaminate the oil circuit in the hydraulic rotary joint 100, thereby ensuring that the medium output from the hydraulic rotary joint 100 meets the Cleanliness requirements for its subsequent use.
  • the sealing member 30 can separate multiple oil circuits in the hydraulic rotary joint 100, so as to prevent the multiple oil circuits in the hydraulic rotary joint 100 from chasing each other and affecting the flow capacity of the hydraulic rotary joint 100, thereby ensuring the hydraulic rotary joint 100 Can meet the flow requirements.
  • the single oil circuit in this application refers to the oil circuit formed by each second opening 22 of the hydraulic rotary joint 100 and the plurality of first openings 14 and the plurality of axial openings 12 communicating with it.
  • the number of the plurality of oil circuits in the hydraulic rotary joint 100 is the same as the number of the second openings 22, that is, there are several second openings 22 in the hydraulic rotary joint 100, and correspondingly, the hydraulic rotary joint 100 includes several oil circuits.
  • the sealing groove 50 is provided on the housing 20 , and the housing 20 has a third end face 26 and a fourth end face 28 arranged away from the third end face 26 ,
  • the housing 20 is provided with a plurality of sealing grooves 50 spaced along the axial direction, a plurality of sealing members 30 are arranged in the plurality of sealing grooves 50, and a second opening of the plurality of second openings 22 that is closest to the third end surface 26 22 and the third end surface 26, a plurality of sealing grooves 50 are provided, and a plurality of sealing grooves 50 are provided between the second opening 22 of the plurality of second openings 22 closest to the fourth end surface 28 and the fourth end surface 28 In the groove 50 , a plurality of sealing grooves 50 are provided between any two adjacent second openings 22 among the plurality of second openings 22 .
  • the seals 30 disposed on the sealing grooves 50 near the third end face 26 and near the fourth end face 28 are used to prevent external dust or particles from entering into the annular space formed between the mandrel 10 and the housing 20 and thereby prevent the external dust or particles from entering the annular space formed between the mandrel 10 and the housing 20.
  • the oil circuit in the hydraulic rotary joint 100 is polluted, so as to ensure that the medium output from the hydraulic rotary joint 100 meets the cleanliness requirements of its subsequent use.
  • the sealing member 30 provided between any two adjacent second openings 22 is used to separate the multiple oil circuits in the hydraulic rotary joint 100, so as to avoid the influence of the multiple oil circuits in the hydraulic rotary joint 100 due to mutual channeling.
  • the flow capacity of the hydraulic swivel joint 100 ensures that the hydraulic swivel joint 100 can meet the flow requirements.
  • the sealing member 30 disposed between any two adjacent second openings 22 separates the annular space formed between the mandrel 10 and the outer casing 20, so as to realize the sealing of multiple seals in the hydraulic rotary joint 100.
  • the oil path is separated.
  • the above-mentioned sealing groove 50 can also be provided on the mandrel 10 .
  • a plurality of sealing grooves 50 are arranged at intervals along the axial direction, a plurality of sealing members 30 are arranged in the plurality of sealing grooves 50, and the second opening 22 closest to the first end face 11 among the plurality of second openings 22 is connected to the second opening 22.
  • At least one sealing groove 50 is provided between one end surface 11, and at least one sealing groove 50 is provided between the second opening 22 closest to the second end surface 13 among the plurality of second openings 22 and the second end surface 13, At least one sealing groove 50 is disposed between any two adjacent second openings 22 among the plurality of second openings 22 .
  • sealing grooves 50 can also be provided on the mandrel 10, and the other part can be provided on the casing 20.
  • a plurality of sealing members 30 are arranged in a plurality of sealing grooves 50, a plurality of sealing grooves 50 are arranged on the mandrel 10 at intervals along the axial direction, a plurality of sealing members 30 are arranged in the plurality of sealing grooves 50, and a plurality of second sealing grooves 50 are arranged.
  • At least one sealing groove 50 (arranged on the housing 20 or the mandrel 10) is provided, and a plurality of second openings 22 Between the second opening 22 closest to the second end face 13 and the second end face 13, at least one sealing groove 50 (arranged on the housing 20 or the mandrel 10) is provided, and any phase of the plurality of second openings 22 is arranged. At least one sealing groove 50 (arranged on the housing 20 or the mandrel 10 ) is disposed between two adjacent second openings 22 .
  • the plurality of seals 30 include O-rings.
  • the O-ring seal is inexpensive and has a wide range of optional specifications, which facilitates subsequent maintenance and replacement of the seal 30, thereby saving the maintenance and maintenance costs of the hydraulic rotary joint 100.
  • the sealing member 30 may also adopt a lip-type metal sealing ring.
  • the present application further provides an electro-hydraulic swivel connection device 400 .
  • the electro-hydraulic swivel connection device 400 includes the hydraulic swivel joint 100 according to any one of the embodiments of the first aspect and a Electric slip ring 40 on hydraulic rotary joint 100 .
  • the electric slip ring 40 includes an electric slip ring body 42 , an electric slip ring rotor outlet end 44 and an electric slip ring stator outlet end.
  • the electric slip ring body 42 is sleeved on the outer circumference of the casing 20
  • the electric slip ring rotor outlet end 44 is arranged on the mandrel 10
  • a conducting circuit is provided between the electric slip ring rotor outlet end 44 and the electric slip ring body 42 .
  • the electric slip ring stator outlet end 46 is arranged on the electric slip ring body 42 .
  • the rotor outlet end 44 of the electric slip ring is connected to the external power supply, which can conduct the external current to the electric slip ring 40, so as to provide a power source for the rotary motion of the electro-hydraulic rotary connection device 400, thereby ensuring the electro-hydraulic rotation.
  • the connection device 400 can work normally.
  • the electric slip ring 40 transmits power, it can also avoid the problem that the wires are entangled with each other and damaged during the rotation, so as to ensure that the electro-hydraulic rotary connection device 400 can work normally.
  • the electro-hydraulic rotary connection device 400 provided by the technical solution of the second aspect of the present application includes the hydraulic rotary joint 100 of any one of the embodiments of the first aspect, and thus has all the beneficial effects of any of the above-mentioned embodiments. No longer.
  • the electro-hydraulic rotary connection device 400 in this application has the following advantages:
  • the distributed oil circuit arrangement is adopted, which effectively reduces the volume of the hydraulic rotary joint 100 without reducing the flow capacity.
  • the electric slip ring 40 and the hydraulic rotary joint 100 are nested and arranged, and the electrical and hydraulic functions of the hydraulic rotary joint 100 are integrated without significantly increasing the volume of the hydraulic rotary joint 100 .
  • the electro-hydraulic rotary connection device 400 of this scheme adopts a hollow design inside, and the middle part is used for the arrangement of the conveying pipe of the pumped product.
  • the hydraulic rotary joint 100 of this scheme can be actually equipped and applied to pumping products, so that the pump truck can get rid of the limitation of the rotation angle.
  • the present application also provides a work vehicle, including a chassis, a work device, and the hydraulic swivel joint 100 as in any one of the first aspect embodiments, or the electro-hydraulic swivel connection device 400 as in any one of the second aspect embodiments.
  • the working device is rotatably arranged on the chassis, the hydraulic swivel joint 100 is arranged between the chassis and the working device, and the electro-hydraulic swivel connection device 400 is arranged between the chassis and the working device.
  • the working vehicle is provided with a hydraulic swivel joint 100, so that the working vehicle has the function of swivel connection of hydraulic pipelines, so as to meet the connection requirements of hydraulic pipelines during on-site pumping operations, and an electro-hydraulic slewing connection device 400 is provided on the working vehicle. , so that the working vehicle has the function of swivel connection of hydraulic pipelines and electric wires, so as to meet the connection requirements of hydraulic pipelines and electric wires during on-site pumping operations, thereby ensuring that on-site pumping operations can be carried out smoothly.
  • the work vehicle in the present application is not limited to a pump truck, but may also be a fire truck, a crane and other engineering vehicles or equipment.
  • one large-diameter axial opening 12 is provided with a plurality of small-diameter axial openings 12, and correspondingly, a plurality of axial openings 12 are provided in a one-to-one correspondence with the plurality of axial openings 12.
  • the hydraulic rotary joint 100 in the present application can reduce its own volume while maintaining the original large flow capacity, thereby making full use of the internal space of the hydraulic rotary joint 100 and solving the limited installation space of the hydraulic rotary joint in the related art.
  • the hydraulic swivel joint cannot meet the large flow requirements of the hydraulic rotary joint, it is ensured that the hydraulic rotary joint 100 in the present application can not only meet the installation requirements of a small space, but also meet the flow requirements of a large flow.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Joints Allowing Movement (AREA)

Abstract

Disclosed is a hydraulic rotary joint (100). The hydraulic rotary joint comprises: a core shaft (10) having a plurality of axial open holes (12) and a plurality of first open holes (14), the plurality of axial open holes being provided in the circumferential direction of the core shaft at intervals, and the plurality of axial open holes being in communication with the plurality of first open holes in a one-to-one correspondence; and a shell (20) arranged at the periphery of the core shaft, a plurality of second open holes (22) being provided in the axial direction of the shell at intervals, and one second open hole being in communication with at least two first open holes. The size of the hydraulic rotary joint can be reduced while maintaining the original large through-flow capacity of the hydraulic rotary joint, thereby fully using the internal space, and solving the problem of the large through-flow requirement of the hydraulic rotary joint being unable to be met when the mounting space is limited. Further disclosed are an electro-hydraulic rotary connecting device (400) and an operating vehicle.

Description

液压回转接头、电液回转连接装置和作业车辆Hydraulic swivel joints, electro-hydraulic swivel joints and work vehicles
本申请要求于2020年09月30日提交到中国国家知识产权局的申请号为202011063527.0、发明名称为“液压回转接头、电液回转连接装置和作业车辆”的中国专利申请的优先权，并要求于2020年09月30日提交到中国国家知识产权局的申请号为202022210722.3、发明名称为“液压回转接头、电液回转连接装置和作业车辆”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with the application number 202011063527.0 and the invention name "Hydraulic swivel joint, electro-hydraulic slewing connection device and work vehicle" submitted to the State Intellectual Property Office of China on September 30, 2020, and requires The priority of the Chinese patent application with the application number 202022210722.3 and the invention titled "Hydraulic swivel joint, electro-hydraulic slewing connection device and work vehicle" filed with the State Intellectual Property Office of China on September 30, 2020, the entire contents of which are by reference Incorporated in this application.
技术领域technical field
本申请涉及电液回转接头的连接技术领域，具体而言，涉及一种液压回转接头和、电液回转连接装置和作业车辆。The present application relates to the technical field of connection of electro-hydraulic rotary joints, and in particular, to a hydraulic rotary joint, an electro-hydraulic rotary connection device, and a work vehicle.
背景技术Background technique
目前，相关技术中的液压回转接头的轴向开孔的孔径较大，这样使得相关技术中的液压回转接头的体积较大，当液压回转接头的安装空间受限时，为了满足安装要求，只能缩小轴向开孔的孔径以缩小液压回转接头的体积。然而，相关技术中的液压回转接头中的轴向开孔与外壳上的第二开孔一一对应设置，当轴向开孔的孔径缩小，则必然导致液压回转接头的通流能力降低，无法满足液压回转接头的大通流要求。因此，亟待开发一种具有大通流能力，且体积较小的液压回转接头。At present, the diameter of the axial opening of the hydraulic rotary joint in the related art is relatively large, so that the volume of the hydraulic rotary joint in the related art is relatively large. When the installation space of the hydraulic rotary joint is limited, in order to meet the installation requirements, only The diameter of the axial opening can be reduced to reduce the volume of the hydraulic rotary joint. However, the axial openings in the hydraulic rotary joint in the related art are arranged in a one-to-one correspondence with the second openings on the housing. When the diameter of the axial openings is reduced, the flow capacity of the hydraulic rotary joint will inevitably decrease, and it is impossible to Meet the large flow requirements of hydraulic rotary joints. Therefore, it is urgent to develop a hydraulic rotary joint with large flow capacity and small volume.
发明内容SUMMARY OF THE INVENTION
本申请旨在至少解决现有技术或相关技术中存在的技术问题之一。The present application aims to solve at least one of the technical problems existing in the prior art or related technologies.
为此，本申请的一个目的在于提供一种液压回转接头。To this end, an object of the present application is to provide a hydraulic rotary joint.
本申请的另一个目的在于提供一种电液回转连接装置。Another object of the present application is to provide an electro-hydraulic rotary connection device.
本申请的另一个目的在于提供一种作业车辆。Another object of the present application is to provide a work vehicle.
为了实现上述目的，本申请的实施例提供了一种液压回转接头，液压回转接头包括：芯轴，具有多个轴向开孔和多个第一开孔，多个轴向开孔沿芯轴的 周向间隔设置，多个轴向开孔与多个第一开孔一一对应地连通设置，第一开孔的一端连通轴向开孔，第一开孔的另一端位于芯轴的外周面上；外壳，套设在芯轴的外周上，沿外壳的轴向方向，外壳上间隔设置有第二开孔；其中，一个第二开孔与至少两个第一开孔连通。In order to achieve the above purpose, embodiments of the present application provide a hydraulic swivel joint, the hydraulic swivel joint includes: a mandrel with a plurality of axial openings and a plurality of first openings, and the plurality of axial openings are along the mandrel The circumference of the first hole is spaced apart, and the plurality of axial openings are arranged in a one-to-one correspondence with the plurality of first openings, one end of the first opening is connected to the axial opening, and the other end of the first opening is located on the outer circumference of the mandrel The outer shell is sleeved on the outer circumference of the mandrel, and along the axial direction of the outer shell, the outer shell is provided with second openings at intervals; wherein, one second opening communicates with at least two first openings.
在该技术方案中，将一个大孔径的轴向开孔设置成多个小孔径的轴向开孔，相应地设置有与多个轴向开孔一一对应连通设置的多个第一开孔，为了确保液压回转接头达到上述大孔径的轴向开孔的通流能力，将一个第二开孔设置成与上述多个第一开孔同时连通。这样使得本申请中的液压回转接头在保持原来的大通流能力的同时，能够缩小自身的体积，从而充分利用了液压回转接头的内部空间，解决了相关技术中液压回转接头的安装空间有限时，无法满足液压回转接头的大通流要求的问题，进而确保本申请中的液压回转接头既能满足较小空间的安装要求，又能满足较大流量的通流要求。In this technical solution, a large-diameter axial opening is set to a plurality of small-diameter axial openings, and a plurality of first openings are correspondingly arranged in a one-to-one correspondence with the plurality of axial openings. , in order to ensure that the hydraulic rotary joint can reach the flow capacity of the large-diameter axial openings, a second opening is set to communicate with the plurality of first openings at the same time. In this way, the hydraulic rotary joint in the present application can reduce its own volume while maintaining the original large flow capacity, so as to make full use of the internal space of the hydraulic rotary joint, and solve the problem when the installation space of the hydraulic rotary joint in the related art is limited. The problem of being unable to meet the large flow requirements of the hydraulic rotary joint, thereby ensuring that the hydraulic rotary joint in the present application can meet the installation requirements of a small space and meet the flow requirements of a large flow.
另外，本申请提供的上述实施例中的液压回转接头还可以具有如下附加技术特征：In addition, the hydraulic rotary joint in the above embodiments provided by the present application may also have the following additional technical features:
在上述技术方案中，芯轴上还设置有轴向过孔，轴向过孔沿芯轴的轴向贯穿芯轴。In the above technical solution, the mandrel is further provided with an axial through hole, and the axial through hole penetrates the mandrel along the axial direction of the mandrel.
在该技术方案中，轴向过孔作为一个过孔，便于泵送产品的输送管线通过，这样确保输送管线能够顺利地安装，进而确保泵送产品能够正常地工作。In this technical solution, the axial through hole is used as a through hole to facilitate the passage of the conveying pipeline of the pumped product, thus ensuring that the conveying pipeline can be installed smoothly, thereby ensuring that the pumped product can work normally.
在上述任一技术方案中，多个第一开孔沿芯轴的径向方向设置；第二开孔包括至少两个，每个第二开孔的外端位于外壳的外侧，每个第二开孔的内端通过周向环槽与至少两个第一开孔连通。In any of the above technical solutions, a plurality of first openings are arranged along the radial direction of the mandrel; the second openings include at least two, the outer end of each second opening is located outside the casing, and each second opening The inner end of the opening is communicated with the at least two first openings through the circumferential annular groove.
在该技术方案中，第一开孔在芯轴的径向方向上延伸设置，即第一开孔为直孔，避免了将第一开孔设置成斜孔导致的加工难度大且成本高的问题，这样提高了第一开孔加工的便利性，同时降低了液压回转接头的加工制造成本。In this technical solution, the first opening is extended in the radial direction of the mandrel, that is, the first opening is a straight hole, which avoids the difficult and costly processing caused by setting the first opening as an oblique hole. The problem is that this improves the convenience of processing the first hole, and at the same time reduces the processing and manufacturing cost of the hydraulic rotary joint.
在上述任一技术方案中，外壳包括壳体和设置在壳体上的多个凸起，多个凸起沿外壳的径向朝远离芯轴的方向凸出，多个第二开孔的外端一一对应地设置于多个凸起上。In any of the above technical solutions, the housing includes a housing and a plurality of protrusions disposed on the housing, the plurality of protrusions protrude in a direction away from the mandrel along the radial direction of the housing, and the outer surfaces of the plurality of second openings protrude in a direction away from the mandrel. The ends are arranged on the plurality of protrusions in a one-to-one correspondence.
在该技术方案中，多个凸起能够与外部的多个连接管线一一对应地配合连接，比如卡接或者锁紧连接，连接管线上的卡接机构或者锁紧机构能够锁紧在 凸起的外周面上，避免连接管线与液压回转接头的连接处出现漏油的问题，这样确保连接管线与液压回转接头能够正确地连接，从而确保液压回转接头能够正常地工作。In this technical solution, a plurality of protrusions can be matched and connected with a plurality of external connecting pipelines in a one-to-one correspondence, such as a snap connection or a locking connection, and a snap connection mechanism or a locking mechanism on the connecting pipeline can be locked on the protrusions. On the outer peripheral surface of the hydraulic rotary joint, the problem of oil leakage can be avoided at the connection between the connecting pipeline and the hydraulic rotary joint, so as to ensure that the connecting pipeline and the hydraulic rotary joint can be correctly connected, so as to ensure that the hydraulic rotary joint can work normally.
在上述任一技术方案中，液压回转接头还包括多个密封件，多个密封件设置在芯轴和外壳之间。多个密封件包括O形密封圈和/或唇型金属密封环。In any of the above technical solutions, the hydraulic rotary joint further includes a plurality of seals, and the plurality of seals are arranged between the mandrel and the housing. The plurality of seals include O-rings and/or metal lip seals.
在该技术方案中，密封件能够防止外部灰尘或者颗粒进入到芯轴和外壳之间形成的环形空间内而污染液压回转接头内的油路，从而确保从液压回转接头输出的介质满足其后续使用的洁净度要求。另外，密封件能够将液压回转接头中的多条油路隔开，避免液压回转接头中的多条油路互窜而影响液压回转接头的通流能力，从而确保液压回转接头能够满足通流要求。O形密封圈价格便宜，规格尺寸可选的范围大，这样便于密封件后续的维护和更换，从而节约了液压回转接头的维护和保养成本。当然，根据实际情况，密封件也可以采用唇型金属密封环。In this technical solution, the seal can prevent external dust or particles from entering the annular space formed between the mandrel and the housing to contaminate the oil circuit in the hydraulic rotary joint, thereby ensuring that the medium output from the hydraulic rotary joint can meet its subsequent use. cleanliness requirements. In addition, the seal can separate multiple oil circuits in the hydraulic rotary joint, preventing the multiple oil circuits in the hydraulic rotary joint from channeling each other and affecting the flow capacity of the hydraulic rotary joint, thereby ensuring that the hydraulic rotary joint can meet the flow requirements. . The O-ring seal is cheap and has a wide range of specifications and sizes, which facilitates the subsequent maintenance and replacement of the seal, thereby saving the maintenance and maintenance costs of the hydraulic rotary joint. Of course, according to the actual situation, the seal can also use a lip-type metal sealing ring.
在上述任一技术方案中，芯轴具有第一端面和与第一端面背向设置的第二端面，芯轴上设置有多个沿轴向间隔设置的密封槽，多个密封件设置在多个密封槽内，多个第二开孔中最靠近第一端面的第二开孔与第一端面之间，至少设置有一个密封槽，多个第二开孔中最靠近第二端面的第二开孔与第二端面之间，至少设置有一个密封槽，多个第二开孔中任意相邻的两个第二开孔之间设置有至少一个密封槽。In any of the above technical solutions, the mandrel has a first end face and a second end face that is arranged away from the first end face, the mandrel is provided with a plurality of sealing grooves arranged at intervals along the axial direction, and the plurality of seals are arranged in the plurality of In each of the sealing grooves, at least one sealing groove is disposed between the second opening of the plurality of second openings that is closest to the first end face and the first end face, and the second opening of the plurality of second openings that is closest to the second end face At least one sealing groove is provided between the two openings and the second end face, and at least one sealing groove is provided between any two adjacent second openings among the plurality of second openings.
在该技术方案中，设置在靠近第一端面和靠近第二端面的密封槽上的密封件，用于防止外部灰尘或者颗粒进入到芯轴和外壳之间形成的环形空间内而污染液压回转接头内的油路，从而确保从液压回转接头输出的介质满足其后续使用的洁净度要求。上述任意相邻的两个第二开孔之间设置的密封件用于将液压回转接头中的多条油路隔开，避免液压回转接头中的多条油路互窜而影响液压回转接头的通流能力，从而确保液压回转接头能够满足通流要求。In this technical solution, the seals disposed on the sealing grooves close to the first end face and close to the second end face are used to prevent external dust or particles from entering the annular space formed between the mandrel and the housing to contaminate the hydraulic rotary joint The internal oil circuit, so as to ensure that the medium output from the hydraulic rotary joint meets the cleanliness requirements of its subsequent use. The seals provided between any two adjacent second openings above are used to separate multiple oil circuits in the hydraulic rotary joint, so as to prevent the multiple oil circuits in the hydraulic rotary joint from channeling each other and affecting the performance of the hydraulic rotary joint. Flow capacity, thus ensuring that the hydraulic rotary joint can meet the flow requirements.
在上述任一技术方案中，外壳具有第三端面和与第三端面背向设置的第四端面，外壳上设置有多个沿轴向间隔设置的密封槽，多个密封件设置在多个密封槽内，多个第二开孔中最靠近第三端面的第二开孔与第三端面之间，至少设置有一个密封槽，多个第二开孔中最靠近第四端面的第二开孔与第四端面之 间，至少设置有一个密封槽，多个第二开孔中任意相邻的两个第二开孔之间设置有至少一个密封槽。In any of the above technical solutions, the casing has a third end face and a fourth end face disposed away from the third end face, the casing is provided with a plurality of sealing grooves spaced apart in the axial direction, and the plurality of seals are arranged in the plurality of seals. In the groove, at least one sealing groove is provided between the second opening of the plurality of second openings that is closest to the third end surface and the third end surface, and the second opening of the plurality of second openings that is closest to the fourth end surface. At least one sealing groove is provided between the hole and the fourth end surface, and at least one sealing groove is provided between any two adjacent second openings among the plurality of second openings.
在该技术方案中，设置在靠近第三端面和靠近第四端面的密封槽上的密封件，用于防止外部灰尘或者颗粒进入到芯轴和外壳之间形成的环形空间内而污染液压回转接头内的油路，从而确保从液压回转接头输出的介质满足其后续使用的洁净度要求。上述任意相邻的两个第二开孔之间设置的密封件用于将液压回转接头中的多条油路隔开，避免液压回转接头中的多条油路互窜而影响液压回转接头的通流能力，从而确保液压回转接头能够满足通流要求。In this technical solution, the seals provided on the sealing grooves near the third end face and the fourth end face are used to prevent external dust or particles from entering the annular space formed between the mandrel and the housing to contaminate the hydraulic rotary joint The internal oil circuit, so as to ensure that the medium output from the hydraulic rotary joint meets the cleanliness requirements of its subsequent use. The seals provided between any two adjacent second openings above are used to separate multiple oil circuits in the hydraulic rotary joint, so as to prevent the multiple oil circuits in the hydraulic rotary joint from channeling each other and affecting the performance of the hydraulic rotary joint. Flow capacity, thus ensuring that the hydraulic rotary joint can meet the flow requirements.
本申请第二方面的技术方案提供了一种电液回转连接装置，电液回转连接装置包括如第一方面技术方案中任一项方案的液压回转接头和套设在液压回转接头外周上的电滑环。The technical solution of the second aspect of the present application provides an electro-hydraulic rotary connection device. The electro-hydraulic rotary connection device includes the hydraulic rotary joint according to any one of the technical solutions of the first aspect and an electric rotary joint sleeved on the outer circumference of the hydraulic rotary joint. slip ring.
本申请第二方面的技术方案提供的电液回转连接装置，因包括第一方面技术方案中任一项的液压回转接头，因而具有上述任一技术方案所具有的一切有益效果，在此不再赘述。The electro-hydraulic rotary connection device provided by the technical solution of the second aspect of the present application, because it includes the hydraulic rotary joint of any one of the technical solutions of the first aspect, has all the beneficial effects of any of the above-mentioned technical solutions, and will not be repeated here. Repeat.
在该技术方案中，由于电滑环套设在液压回转接头上，这种嵌套式布置的组合方式使得电液回转连接装置的结构紧凑，节约了液压回转接头的占用空间，在不明显增加电液回转连接装置体积的前提下，实现了电液回转连接装置的电通路和液通路的功能集成，从而满足电液回转连接装置的电液复合的连接要求。In this technical solution, since the electric slip ring is sleeved on the hydraulic rotary joint, the combination of this nested arrangement makes the structure of the electro-hydraulic rotary connection device compact, saves the space occupied by the hydraulic rotary joint, and does not significantly increase the size of the hydraulic rotary joint. On the premise of the volume of the electro-hydraulic rotary connecting device, the functional integration of the electric and hydraulic channels of the electro-hydraulic rotary connecting device is realized, thereby meeting the connection requirements of the electro-hydraulic composite of the electro-hydraulic rotary connecting device.
在上述技术方案中，电滑环包括：电滑环本体，套设在外壳的外周上；电滑环转子出线端，设置在芯轴上，电滑环转子出线端与电滑环本体之间设置有导通电路；电滑环定子出线端，设置在电滑环本体上。In the above technical solution, the electric slip ring includes: an electric slip ring body, sleeved on the outer circumference of the casing; the electric slip ring rotor outlet end, arranged on the mandrel, between the electric slip ring rotor outlet end and the electric slip ring body A conducting circuit is provided; the outgoing end of the electric slip ring stator is arranged on the electric slip ring body.
在该技术方案中，电滑环转子出线端与外部电源连接，能够将外部的电流导通到电滑环上，从而为电液回转连接装置的回转运动提供动力源，进而确保电液回转连接装置能够正常地工作。另外，电滑环在进行传输动力的同时，还能够避免导线在旋转过程中相互缠绕而损坏的问题，从而确保电液回转连接装置能够正常地工作。In this technical solution, the rotor outlet end of the electric slip ring is connected to an external power source, which can conduct the external current to the electric slip ring, thereby providing a power source for the rotary motion of the electro-hydraulic rotary connection device, thereby ensuring the electro-hydraulic rotary connection. The device works normally. In addition, when the electric slip ring transmits power, it can also avoid the problem that the wires are entangled with each other and damaged during the rotation process, so as to ensure that the electro-hydraulic rotary connection device can work normally.
本申请第三方面的技术方案提供了一种作业车辆，包括：底盘；作业装置，旋转设置于底盘上；如第一方面技术方案中任一项的液压回转接头，液压回转 接头设置于底盘与作业装置之间；或如第二方面技术方案中任一项的电液回转连接装置，电液回转连接装置设置于底盘与作业装置之间。The technical solution of the third aspect of the present application provides a working vehicle, including: a chassis; a working device, which is rotatably arranged on the chassis; the hydraulic swivel joint according to any one of the technical solutions of the first aspect, wherein the hydraulic swivel joint is arranged between the chassis and the chassis. between working devices; or the electro-hydraulic slewing connection device as in any one of the technical solutions of the second aspect, the electro-hydraulic slewing connection device is arranged between the chassis and the working device.
在该技术方案中，作业车辆上设置有液压回转接头，这样使得作业车辆具有回转连接液压管线的功能，从而满足现场泵送作业时液压管线的连接要求，作业车辆上设置有电液回转连接装置，这样使得作业车辆具有回转连接液压管线和电线的功能，从而满足现场泵送作业时液压管线和电线的连接要求，进而确保现场的泵送作业能够顺利地进行。In this technical solution, the work vehicle is provided with a hydraulic swivel joint, so that the work vehicle has the function of swivelly connecting the hydraulic pipeline, so as to meet the connection requirements of the hydraulic pipeline during the on-site pumping operation, and an electro-hydraulic slewing connection device is provided on the work vehicle. , so that the working vehicle has the function of swivel connection of hydraulic pipelines and electric wires, so as to meet the connection requirements of hydraulic pipelines and electric wires during on-site pumping operations, thereby ensuring that on-site pumping operations can be carried out smoothly.
本申请的附加方面和优点将在下面的描述部分中变得明显，或通过本申请的实践了解到。Additional aspects and advantages of the present application will become apparent in the description section below, or learned by practice of the present application.
附图说明Description of drawings
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:
图1示出了根据本申请实施例的液压回转接头的结构示意图；FIG. 1 shows a schematic structural diagram of a hydraulic rotary joint according to an embodiment of the present application;
图2示出了图1中液压回转接头A-A处的剖视图；Figure 2 shows a cross-sectional view of the hydraulic rotary joint A-A in Figure 1;
图3示出了图1中的芯轴的立体结构示意图；Fig. 3 shows the three-dimensional schematic diagram of the mandrel in Fig. 1;
图4示出了根据本申请实施例的电液回转连接装置的立体结构示意图；FIG. 4 shows a schematic three-dimensional structure diagram of an electro-hydraulic rotary connection device according to an embodiment of the present application;
图5示出了图4中电液回转连接装置B-B处的剖视图。FIG. 5 shows a cross-sectional view of the electro-hydraulic rotary connection device B-B in FIG. 4 .
其中，图1至图5中附图标记与部件名称之间的对应关系为：Wherein, the corresponding relationship between the reference numerals and the component names in Fig. 1 to Fig. 5 is:
100、液压回转接头；10、芯轴；11、第一端面；12、轴向开孔；13、第二端面；14、第一开孔；16、轴向过孔；20、外壳；22、第二开孔；23、壳体；24、凸起；26、第三端面；28、第四端面；30、密封件；400、电液回转连接装置；40、电滑环；42、电滑环本体；44、电滑环转子出线端；46、电滑环定子出线端；50、密封槽。100, hydraulic rotary joint; 10, mandrel; 11, first end face; 12, axial opening; 13, second end face; 14, first opening; 16, axial through hole; 20, housing; 22, second opening; 23, housing; 24, protrusion; 26, third end face; 28, fourth end face; 30, seal; 400, electro-hydraulic rotary connection device; 40, electric slip ring; 42, electric slip Ring body; 44. Outgoing end of electric slip ring rotor; 46. Outgoing end of electric slip ring stator; 50. Sealing groove.
具体实施方式Detailed ways
为了能够更清楚地理解本申请的上述目的、特征和优点，下面结合附图和具体实施方式对本申请进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。In order to more clearly understand the above objects, features and advantages of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments may be combined with each other in the case of no conflict.
在下面的描述中阐述了很多具体细节以便于充分理解本申请，但是，本申请还可以采用其他不同于在此描述的其他方式来实施，因此，本申请的保护范围并不受下面公开的具体实施例的限制。Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific details disclosed below. Example limitations.
下面参照图1至图5描述根据本申请一些实施例的液压回转接头100和电液回转连接装置400。The hydraulic swivel joint 100 and the electro-hydraulic swivel connection device 400 according to some embodiments of the present application are described below with reference to FIGS. 1 to 5 .
如图1和图2所示，本申请及本申请的实施例提供了一种液压回转接头100，液压回转接头100包括芯轴10和外壳20。其中，芯轴10具有多个轴向开孔12和多个第一开孔14，多个轴向开孔12沿芯轴10的周向间隔设置。多个轴向开孔12与多个第一开孔14一一对应地连通设置，第一开孔14的一端连通轴向开孔12，第一开孔14的另一端位于芯轴10的外周面上。外壳20套设在芯轴10的外周上，沿外壳20的轴向方向，外壳20上间隔设置有第二开孔22。一个第二开孔22与至少两个第一开孔14连通。As shown in FIGS. 1 and 2 , the present application and the embodiments of the present application provide a hydraulic rotary joint 100 . The hydraulic rotary joint 100 includes a mandrel 10 and a housing 20 . The mandrel 10 has a plurality of axial openings 12 and a plurality of first openings 14 , and the plurality of axial openings 12 are arranged at intervals along the circumferential direction of the mandrel 10 . A plurality of axial openings 12 are arranged in a one-to-one correspondence with a plurality of first openings 14 , one end of the first opening 14 is connected to the axial opening 12 , and the other end of the first opening 14 is located on the outer periphery of the mandrel 10 face. The casing 20 is sleeved on the outer circumference of the mandrel 10 , and along the axial direction of the casing 20 , the casing 20 is provided with second openings 22 at intervals. One second opening 22 communicates with at least two first openings 14 .
上述设置中，将一个大孔径的轴向开孔12设置成多个小孔径的轴向开孔12，相应地设置有与多个轴向开孔12一一对应连通设置的多个第一开孔14，为了确保液压回转接头100达到上述大孔径的轴向开孔12的通流能力，将一个第二开孔22设置成与上述多个第一开孔14同时连通。这样使得本申请中的液压回转接头100在保持原来的大通流能力的同时，能够缩小自身的体积，从而充分利用了液压回转接头100的内部空间，解决了相关技术中液压回转接头的安装空间有限时，无法满足液压回转接头的大通流要求的问题，进而确保本申请中的液压回转接头100既能满足较小空间的安装要求，又能满足较大流量的通流要求。In the above arrangement, one large-diameter axial opening 12 is set to a plurality of small-diameter axial openings 12, and correspondingly, a plurality of first openings are arranged in a one-to-one correspondence with the plurality of axial openings 12. For the hole 14 , in order to ensure that the hydraulic rotary joint 100 achieves the flow capacity of the large-diameter axial hole 12 , a second hole 22 is set to communicate with the first holes 14 at the same time. In this way, the hydraulic rotary joint 100 in the present application can reduce its own volume while maintaining the original large flow capacity, thereby making full use of the internal space of the hydraulic rotary joint 100 and solving the limited installation space of the hydraulic rotary joint in the related art. When the hydraulic swivel joint cannot meet the large flow requirements of the hydraulic rotary joint, it is ensured that the hydraulic rotary joint 100 in the present application can not only meet the installation requirements of a small space, but also meet the flow requirements of a large flow.
需要说明的是，本申请中的液压回转接头100采用分布式的油路设计(一个大孔径的轴向开孔12分开设置成多个小孔径的轴向开孔12，多个小孔径的轴向开孔12一一对应地连通设置有多个第一开孔14，一个第二开孔22与多个第一开孔14的同时连通)，这样化大为小，在相同通流能力的情况下，有效减小了液压回转接头100的尺寸。另外，可根据液压回转接头100实际的通流要求和安装尺寸要求，设置轴向开孔12的数量。It should be noted that the hydraulic rotary joint 100 in this application adopts a distributed oil circuit design (one large-diameter axial opening 12 is separated into a plurality of small-diameter axial openings 12, and a plurality of small-diameter shafts A plurality of first openings 14 are arranged in a one-to-one correspondence with the openings 12, and a second opening 22 is communicated with a plurality of first openings 14 at the same time), so that the larger is smaller, and the same flow capacity is obtained. In this case, the size of the hydraulic rotary joint 100 is effectively reduced. In addition, the number of axial openings 12 can be set according to the actual flow requirements and installation size requirements of the hydraulic rotary joint 100 .
具体地，如图1至图5所示，在本申请的实施例中，芯轴10上还设置有轴向过孔16，轴向过孔16沿芯轴10的轴向贯穿芯轴10。Specifically, as shown in FIGS. 1 to 5 , in the embodiment of the present application, the mandrel 10 is further provided with an axial through hole 16 , and the axial through hole 16 penetrates the mandrel 10 along the axial direction of the mandrel 10 .
上述设置中，轴向过孔16作为一个过孔，便于泵送产品的输送管线通过，这样确保输送管线能够顺利地安装，进而确保泵送产品能够正常地工作。In the above arrangement, the axial through hole 16 is used as a through hole to facilitate the passage of the conveying line of the pumped product, thus ensuring that the conveying line can be installed smoothly, thereby ensuring that the pumped product can work normally.
具体地，如图2和图5所示，在本申请的实施例中，多个第一开孔14在芯轴10的径向方向上延伸设置。第二开孔22的数量为三个，每个第二开孔22的外端位于外壳20的外侧，每个第二开孔22的内端通过周向环槽与至少两个第一开孔14连通。Specifically, as shown in FIGS. 2 and 5 , in the embodiment of the present application, a plurality of first openings 14 are extended in the radial direction of the mandrel 10 . The number of the second openings 22 is three, the outer end of each second opening 22 is located outside the housing 20 , and the inner end of each second opening 22 communicates with at least two first openings 14 through a circumferential annular groove .
上述设置中，第一开孔14在芯轴10的径向方向上延伸设置，即第一开孔14为直孔，避免了将第一开孔14设置成斜孔而导致的加工难度大且成本高的问题，这样提高了第一开孔14加工的便利性，同时降低了液压回转接头100的加工制造成本。In the above arrangement, the first opening 14 is extended in the radial direction of the mandrel 10, that is, the first opening 14 is a straight hole, which avoids the difficulty in processing caused by setting the first opening 14 as an oblique hole. In view of the problem of high cost, this improves the convenience of processing the first opening 14 and reduces the processing and manufacturing cost of the hydraulic rotary joint 100 .
具体地，如图1和图4所示，本申请的实施例中，外壳20包括壳体23和设置在壳体23上的多个凸起24，多个凸起24沿外壳20的径向朝远离芯轴10的方向凸出，多个第二开孔22的外端一一对应地设置于多个凸起24上。Specifically, as shown in FIGS. 1 and 4 , in the embodiment of the present application, the housing 20 includes a housing 23 and a plurality of protrusions 24 provided on the housing 23 , and the plurality of protrusions 24 are along the radial direction of the housing 20 . Protruding toward the direction away from the mandrel 10 , the outer ends of the plurality of second openings 22 are disposed on the plurality of protrusions 24 in a one-to-one correspondence.
上述设置中，多个凸起24能够与外部的多个连接管线一一对应地配合连接，比如卡接或者锁紧连接，连接管线上的卡接机构或者锁紧机构能够锁紧在凸起24的外周面上，避免连接管线与液压回转接头100的连接处出现漏油的问题，这样确保连接管线与液压回转接头100能够正确地连接，从而确保液压回转接头100能够正常地工作。In the above arrangement, a plurality of protrusions 24 can be connected with a plurality of external connecting pipelines in a one-to-one correspondence, such as a snap connection or a locking connection, and the snap connection mechanism or locking mechanism on the connecting pipeline can be locked on the protrusion 24. On the outer peripheral surface of the connecting line, the problem of oil leakage at the connection between the connecting pipeline and the hydraulic rotary joint 100 is avoided, so as to ensure that the connecting pipeline and the hydraulic rotary joint 100 can be correctly connected, thereby ensuring that the hydraulic rotary joint 100 can work normally.
具体地，如图2和图5所示，本申请的实施例中，液压回转接头100还包括多个密封件30，多个密封件30设置在芯轴10和外壳20之间。Specifically, as shown in FIGS. 2 and 5 , in the embodiment of the present application, the hydraulic rotary joint 100 further includes a plurality of seals 30 , and the plurality of seals 30 are disposed between the mandrel 10 and the housing 20 .
上述设置中，密封件30能够防止外部灰尘或者颗粒进入到芯轴10和外壳20之间形成的环形空间内而污染液压回转接头100内的油路，从而确保从液压回转接头100输出的介质满足其后续使用的洁净度要求。另外，密封件30能够将液压回转接头100中的多条油路隔开，避免液压回转接头100中的多条油路互窜而影响液压回转接头100的通流能力，从而确保液压回转接头100能够满足通流要求。In the above arrangement, the seal 30 can prevent external dust or particles from entering into the annular space formed between the mandrel 10 and the housing 20 to contaminate the oil circuit in the hydraulic rotary joint 100, thereby ensuring that the medium output from the hydraulic rotary joint 100 meets the Cleanliness requirements for its subsequent use. In addition, the sealing member 30 can separate multiple oil circuits in the hydraulic rotary joint 100, so as to prevent the multiple oil circuits in the hydraulic rotary joint 100 from chasing each other and affecting the flow capacity of the hydraulic rotary joint 100, thereby ensuring the hydraulic rotary joint 100 Can meet the flow requirements.
需要说明的是，本申请中的单条油路指的是液压回转接头100的每个第二开孔22和与其连通的多个第一开孔14和多个轴向开孔12形成的油路。液压回转接头100中多条油路的数量与第二开孔22的数量相同，即液压回转接头 100中有几个第二开孔22，相应地，液压回转接头100就包含几条油路。It should be noted that the single oil circuit in this application refers to the oil circuit formed by each second opening 22 of the hydraulic rotary joint 100 and the plurality of first openings 14 and the plurality of axial openings 12 communicating with it. . The number of the plurality of oil circuits in the hydraulic rotary joint 100 is the same as the number of the second openings 22, that is, there are several second openings 22 in the hydraulic rotary joint 100, and correspondingly, the hydraulic rotary joint 100 includes several oil circuits.
具体地，如图2和图4所示，本申请的实施例中，密封槽50设置在外壳20上，外壳20具有第三端面26和与第三端面26背向设置的第四端面28，外壳20上设置有多个沿轴向间隔设置的密封槽50，多个密封件30设置在多个密封槽50内，多个第二开孔22中最靠近第三端面26的第二开孔22与第三端面26之间，设置有多个密封槽50，多个第二开孔22中最靠近第四端面28的第二开孔22与第四端面28之间，设置有多个密封槽50，多个第二开孔22中任意相邻的两个第二开孔22之间设置有多个密封槽50。Specifically, as shown in FIG. 2 and FIG. 4 , in the embodiment of the present application, the sealing groove 50 is provided on the housing 20 , and the housing 20 has a third end face 26 and a fourth end face 28 arranged away from the third end face 26 , The housing 20 is provided with a plurality of sealing grooves 50 spaced along the axial direction, a plurality of sealing members 30 are arranged in the plurality of sealing grooves 50, and a second opening of the plurality of second openings 22 that is closest to the third end surface 26 22 and the third end surface 26, a plurality of sealing grooves 50 are provided, and a plurality of sealing grooves 50 are provided between the second opening 22 of the plurality of second openings 22 closest to the fourth end surface 28 and the fourth end surface 28 In the groove 50 , a plurality of sealing grooves 50 are provided between any two adjacent second openings 22 among the plurality of second openings 22 .
上述设置中，设置在靠近第三端面26和靠近第四端面28的密封槽50上的密封件30，用于防止外部灰尘或者颗粒进入到芯轴10和外壳20之间形成的环形空间内而污染液压回转接头100内的油路，从而确保从液压回转接头100输出的介质满足其后续使用的洁净度要求。上述任意相邻的两个第二开孔22之间设置的密封件30用于将液压回转接头100中的多条油路隔开，避免液压回转接头100中的多条油路互窜而影响液压回转接头100的通流能力，从而确保液压回转接头100能够满足通流要求。In the above arrangement, the seals 30 disposed on the sealing grooves 50 near the third end face 26 and near the fourth end face 28 are used to prevent external dust or particles from entering into the annular space formed between the mandrel 10 and the housing 20 and thereby prevent the external dust or particles from entering the annular space formed between the mandrel 10 and the housing 20. The oil circuit in the hydraulic rotary joint 100 is polluted, so as to ensure that the medium output from the hydraulic rotary joint 100 meets the cleanliness requirements of its subsequent use. The sealing member 30 provided between any two adjacent second openings 22 is used to separate the multiple oil circuits in the hydraulic rotary joint 100, so as to avoid the influence of the multiple oil circuits in the hydraulic rotary joint 100 due to mutual channeling. The flow capacity of the hydraulic swivel joint 100 ensures that the hydraulic swivel joint 100 can meet the flow requirements.
需要说明的是，任意相邻的两个第二开孔22之间设置的密封件30通过将芯轴10和外壳20之间形成的环形空间隔断开，以实现对液压回转接头100中的多条油路隔开。采用这种隔断方式，外壳20和芯轴10发生相对转动时，多条油路仍然是隔开的，从而确保液压回转接头100发生回转时，液压回转接头100具有大通径的通流能力，进而满足液压回转接头100的通流要求。It should be noted that, the sealing member 30 disposed between any two adjacent second openings 22 separates the annular space formed between the mandrel 10 and the outer casing 20, so as to realize the sealing of multiple seals in the hydraulic rotary joint 100. The oil path is separated. With this isolation method, when the housing 20 and the mandrel 10 rotate relative to each other, multiple oil circuits are still separated, thereby ensuring that when the hydraulic rotary joint 100 rotates, the hydraulic rotary joint 100 has a large-diameter flow capacity, and further Meet the flow requirements of the hydraulic rotary joint 100 .
当然，根据实际情况，也可以将上述密封槽50设置在芯轴10上，具体地，芯轴10具有第一端面11和与第一端面11背向设置的第二端面13，芯轴10上设置有多个沿轴向间隔设置的密封槽50，多个密封件30设置在多个密封槽50内，多个第二开孔22中最靠近第一端面11的第二开孔22与第一端面11之间，至少设置有一个密封槽50，多个第二开孔22中最靠近第二端面13的第二开孔22与第二端面13之间，至少设置有一个密封槽50，多个第二开孔22中任意相邻的两个第二开孔22之间设置有至少一个密封槽50。Of course, according to the actual situation, the above-mentioned sealing groove 50 can also be provided on the mandrel 10 . A plurality of sealing grooves 50 are arranged at intervals along the axial direction, a plurality of sealing members 30 are arranged in the plurality of sealing grooves 50, and the second opening 22 closest to the first end face 11 among the plurality of second openings 22 is connected to the second opening 22. At least one sealing groove 50 is provided between one end surface 11, and at least one sealing groove 50 is provided between the second opening 22 closest to the second end surface 13 among the plurality of second openings 22 and the second end surface 13, At least one sealing groove 50 is disposed between any two adjacent second openings 22 among the plurality of second openings 22 .
当然，根据实际情况，也可以将上述密封槽50的一部分设置在芯轴10上，另一部分设置在外壳20上，具体地，外壳20上设置有多个沿轴向间隔设 置的密封槽50，多个密封件30设置在多个密封槽50内，芯轴10上设置有多个沿轴向间隔设置的密封槽50，多个密封件30设置在多个密封槽50内，多个第二开孔22中最靠近第一端面11的第二开孔22与第一端面11之间，至少设置有一个密封槽50(设置在外壳20或者芯轴10上)，多个第二开孔22中最靠近第二端面13的第二开孔22与第二端面13之间，至少设置有一个密封槽50(设置在外壳20或者芯轴10上)，多个第二开孔22中任意相邻的两个第二开孔22之间设置有至少一个密封槽50(设置在外壳20或者芯轴10上)。Of course, according to the actual situation, a part of the above-mentioned sealing grooves 50 can also be provided on the mandrel 10, and the other part can be provided on the casing 20. A plurality of sealing members 30 are arranged in a plurality of sealing grooves 50, a plurality of sealing grooves 50 are arranged on the mandrel 10 at intervals along the axial direction, a plurality of sealing members 30 are arranged in the plurality of sealing grooves 50, and a plurality of second sealing grooves 50 are arranged. Among the openings 22, between the second opening 22 closest to the first end face 11 and the first end face 11, at least one sealing groove 50 (arranged on the housing 20 or the mandrel 10) is provided, and a plurality of second openings 22 Between the second opening 22 closest to the second end face 13 and the second end face 13, at least one sealing groove 50 (arranged on the housing 20 or the mandrel 10) is provided, and any phase of the plurality of second openings 22 is arranged. At least one sealing groove 50 (arranged on the housing 20 or the mandrel 10 ) is disposed between two adjacent second openings 22 .
具体地，如图2所示，本申请的实施例中，多个密封件30包括O形密封圈。上述设置中，O形密封圈价格便宜，规格尺寸可选的范围大，这样便于密封件30后续的维护和更换，从而节约了液压回转接头100的维护和保养成本。当然，根据实际情况，密封件30也可以采用唇型金属密封环。Specifically, as shown in FIG. 2 , in the embodiment of the present application, the plurality of seals 30 include O-rings. In the above arrangement, the O-ring seal is inexpensive and has a wide range of optional specifications, which facilitates subsequent maintenance and replacement of the seal 30, thereby saving the maintenance and maintenance costs of the hydraulic rotary joint 100. Of course, according to the actual situation, the sealing member 30 may also adopt a lip-type metal sealing ring.
具体地，如图4和图5所示，本申请还提供一种电液回转连接装置400，电液回转连接装置400包括如第一方面实施例中任一项的液压回转接头100和设置在液压回转接头100上的电滑环40。Specifically, as shown in FIGS. 4 and 5 , the present application further provides an electro-hydraulic swivel connection device 400 . The electro-hydraulic swivel connection device 400 includes the hydraulic swivel joint 100 according to any one of the embodiments of the first aspect and a Electric slip ring 40 on hydraulic rotary joint 100 .
上述设置中，由于电滑环40套设在液压回转接头100上，这种嵌套式布置的组合方式使得电液回转连接装置400结构紧凑，节约了液压回转接头100的占用空间，在不明显增加电液回转连接装置400体积的前提下，实现了电液回转连接装置400的电通路和液通路的功能集成，从而满足电液回转连接装置400的电液复合的连接要求。In the above arrangement, since the electric slip ring 40 is sleeved on the hydraulic rotary joint 100, this nested arrangement makes the electro-hydraulic rotary connection device 400 compact in structure and saves the occupied space of the hydraulic rotary joint 100. On the premise of increasing the volume of the electro-hydraulic rotary connection device 400 , the functional integration of the electrical and hydraulic channels of the electro-hydraulic rotary connection device 400 is realized, thereby meeting the connection requirements of the electro-hydraulic composite connection of the electro-hydraulic rotary connection device 400 .
具体地，如图4所示，本申请的实施例中，电滑环40包括电滑环本体42、电滑环转子出线端44和电滑环定子出线端。其中，电滑环本体42套设在外壳20的外周上，电滑环转子出线端44设置在芯轴10上，电滑环转子出线端44与电滑环本体42之间设置有导通电路。电滑环定子出线端46设置在电滑环本体42上。Specifically, as shown in FIG. 4 , in the embodiment of the present application, the electric slip ring 40 includes an electric slip ring body 42 , an electric slip ring rotor outlet end 44 and an electric slip ring stator outlet end. Wherein, the electric slip ring body 42 is sleeved on the outer circumference of the casing 20 , the electric slip ring rotor outlet end 44 is arranged on the mandrel 10 , and a conducting circuit is provided between the electric slip ring rotor outlet end 44 and the electric slip ring body 42 . The electric slip ring stator outlet end 46 is arranged on the electric slip ring body 42 .
上述设置中，电滑环转子出线端44与外部电源连接，能够将外部的电流导通到电滑环40上，从而为电液回转连接装置400的回转运动提供动力源，进而确保电液回转连接装置400能够正常地工作。另外，电滑环40在进行传输动力的同时，还能够避免导线在旋转过程中相互缠绕而损坏的问题，从而确保电液回转连接装置400能够正常地工作。In the above setting, the rotor outlet end 44 of the electric slip ring is connected to the external power supply, which can conduct the external current to the electric slip ring 40, so as to provide a power source for the rotary motion of the electro-hydraulic rotary connection device 400, thereby ensuring the electro-hydraulic rotation. The connection device 400 can work normally. In addition, while the electric slip ring 40 transmits power, it can also avoid the problem that the wires are entangled with each other and damaged during the rotation, so as to ensure that the electro-hydraulic rotary connection device 400 can work normally.
本申请第二方面的技术方案提供的电液回转连接装置400，因包括第一方面实施例中任一项的液压回转接头100，因而具有上述任一实施例所具有的一切有益效果，在此不再赘述。The electro-hydraulic rotary connection device 400 provided by the technical solution of the second aspect of the present application includes the hydraulic rotary joint 100 of any one of the embodiments of the first aspect, and thus has all the beneficial effects of any of the above-mentioned embodiments. No longer.
需要说明的是，通过查阅专利文件和查找市场上已经存在的类似用途的电液回转连接装置产品，发现相关技术中的电液回转连接装置的产品大多采用堆叠的方式实现电通路和液通路的复合连接，即电滑环40座放在液压回转接头100上，以集成为一个产品。本申请摆脱常规液压回转接头的设计思路，采用了分布式的油路布置，充分利用液压回转接头的内部空间，解决了有限尺寸与大通流能力的矛盾。同时将电滑环40和液压回转接头100进行嵌套式布置，在有限的体积内布置下所有功能部件。It should be noted that, by consulting patent documents and finding products of electro-hydraulic slewing connection devices with similar purposes already existing in the market, it is found that most of the products of electro-hydraulic slewing connection devices in the related art adopt a stacking method to realize the connection of electrical and hydraulic passages. The composite connection, that is, the electric slip ring 40 is seated on the hydraulic rotary joint 100 to be integrated into one product. This application gets rid of the design idea of the conventional hydraulic rotary joint, adopts a distributed oil circuit arrangement, makes full use of the internal space of the hydraulic rotary joint, and solves the contradiction between the limited size and the large flow capacity. At the same time, the electric slip ring 40 and the hydraulic rotary joint 100 are arranged in a nested manner, and all functional components are arranged in a limited volume.
本申请中的电液回转连接装置400具有以下优点：The electro-hydraulic rotary connection device 400 in this application has the following advantages:
1、采用分布式的油路布置，在不降低通流能力的情况下，有效减小了液压回转接头100的体积。1. The distributed oil circuit arrangement is adopted, which effectively reduces the volume of the hydraulic rotary joint 100 without reducing the flow capacity.
2、采用电滑环40和液压回转接头100嵌套布置的方案，在不显著增加液压回转接头100体积的前提下，完成了液压回转接头100的电通路和液通路功能的集成。2. The electric slip ring 40 and the hydraulic rotary joint 100 are nested and arranged, and the electrical and hydraulic functions of the hydraulic rotary joint 100 are integrated without significantly increasing the volume of the hydraulic rotary joint 100 .
3、本方案的电液回转连接装置400，内部采用中空设计，中间部分用作泵送产品输送管的布置。3. The electro-hydraulic rotary connection device 400 of this scheme adopts a hollow design inside, and the middle part is used for the arrangement of the conveying pipe of the pumped product.
4、本方案的液压回转接头100可以实际装备应用于泵送产品，让泵车摆脱了回转角度的限制。4. The hydraulic rotary joint 100 of this scheme can be actually equipped and applied to pumping products, so that the pump truck can get rid of the limitation of the rotation angle.
本申请还提供了一种作业车，包括底盘、作业装置和如第一方面实施中任一项的液压回转接头100，或者如第二方面实施例中任一项的电液回转连接装置400。其中，作业装置旋转设置于底盘上，液压回转接头100设置于底盘与作业装置之间，电液回转连接装置400设置于底盘与作业装置之间。上述设置中，作业车辆上设置有液压回转接头100，这样使得作业车辆具有回转连接液压管线的功能，从而满足现场泵送作业时液压管线的连接要求，作业车辆上设置有电液回转连接装置400，这样使得作业车辆具有回转连接液压管线和电线的功能，从而满足现场泵送作业时液压管线和电线的连接要求，进而确保现场的泵送作业能够顺利地进行。The present application also provides a work vehicle, including a chassis, a work device, and the hydraulic swivel joint 100 as in any one of the first aspect embodiments, or the electro-hydraulic swivel connection device 400 as in any one of the second aspect embodiments. The working device is rotatably arranged on the chassis, the hydraulic swivel joint 100 is arranged between the chassis and the working device, and the electro-hydraulic swivel connection device 400 is arranged between the chassis and the working device. In the above setting, the working vehicle is provided with a hydraulic swivel joint 100, so that the working vehicle has the function of swivel connection of hydraulic pipelines, so as to meet the connection requirements of hydraulic pipelines during on-site pumping operations, and an electro-hydraulic slewing connection device 400 is provided on the working vehicle. , so that the working vehicle has the function of swivel connection of hydraulic pipelines and electric wires, so as to meet the connection requirements of hydraulic pipelines and electric wires during on-site pumping operations, thereby ensuring that on-site pumping operations can be carried out smoothly.
需要说明的是，本申请中的作业车不局限于泵车，也可以是消防车、起重机等工程类车辆或者设备。It should be noted that the work vehicle in the present application is not limited to a pump truck, but may also be a fire truck, a crane and other engineering vehicles or equipment.
从以上的描述中，可以看出，将一个大孔径的轴向开孔12设置成多个小孔径的轴向开孔12，相应地设置有与多个轴向开孔12一一对应连通设置的多个第一开孔14，为了确保液压回转接头100达到上述大孔径的轴向开孔12的通流能力，将一个第二开孔22设置成与上述多个第一开孔14同时连通。这样使得本申请中的液压回转接头100在保持原来的大通流能力的同时，能够缩小自身的体积，从而充分利用了液压回转接头100的内部空间，解决了相关技术中液压回转接头的安装空间有限时，无法满足液压回转接头的大通流要求的问题，进而确保本申请中的液压回转接头100既能满足较小空间的安装要求，又能满足较大流量的通流要求。From the above description, it can be seen that one large-diameter axial opening 12 is provided with a plurality of small-diameter axial openings 12, and correspondingly, a plurality of axial openings 12 are provided in a one-to-one correspondence with the plurality of axial openings 12. The plurality of first openings 14, in order to ensure that the hydraulic rotary joint 100 achieves the flow capacity of the above-mentioned large-diameter axial openings 12, a second opening 22 is set to communicate with the above-mentioned plurality of first openings 14 at the same time. . In this way, the hydraulic rotary joint 100 in the present application can reduce its own volume while maintaining the original large flow capacity, thereby making full use of the internal space of the hydraulic rotary joint 100 and solving the limited installation space of the hydraulic rotary joint in the related art. When the hydraulic swivel joint cannot meet the large flow requirements of the hydraulic rotary joint, it is ensured that the hydraulic rotary joint 100 in the present application can not only meet the installation requirements of a small space, but also meet the flow requirements of a large flow.
在本申请中，术语“第一”、“第二”、“第三”仅用于描述的目的，而不能理解为指示或暗示相对重要性；术语“多个”则指两个或两个以上，除非另有明确的限定。术语“安装”、“相连”、“连接”、“固定”等术语均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；“相连”可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。In this application, the terms "first", "second" and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance; the term "plurality" refers to two or two above, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be It is directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.
本申请的描述中，需要理解的是，术语“上”、“下”、“左”、“右”、“前”、“后”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或单元必须具有特定的方向、以特定的方位构造和操作，因此，不能理解为对本申请的限制。In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the orientations shown in the accompanying drawings Or the positional relationship is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or unit must have a specific direction, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiment", etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in this application at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
以上仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。The above are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims (10)

  1. 一种液压回转接头(100)，其中，所述液压回转接头(100)包括：A hydraulic rotary joint (100), wherein the hydraulic rotary joint (100) comprises:
    芯轴(10)，具有多个轴向开孔(12)和多个第一开孔(14)，多个所述轴向开孔(12)沿所述芯轴(10)的周向间隔设置，多个所述轴向开孔(12)与多个所述第一开孔(14)一一对应地连通设置，所述第一开孔(14)的一端连通所述轴向开孔(12)，所述第一开孔(14)的另一端位于所述芯轴(10)的外周面上；A mandrel (10) having a plurality of axial openings (12) and a plurality of first openings (14), the plurality of axial openings (12) being spaced along the circumference of the mandrel (10) A plurality of the axial openings (12) are arranged in a one-to-one correspondence with a plurality of the first openings (14), and one end of the first openings (14) communicates with the axial openings (12), the other end of the first opening (14) is located on the outer peripheral surface of the mandrel (10);
    外壳(20)，套设在所述芯轴(10)的外周上，沿所述外壳(20)的轴向方向，所述外壳(20)上间隔设置有第二开孔(22)；a casing (20) sleeved on the outer circumference of the mandrel (10), and along the axial direction of the casing (20), second openings (22) are provided at intervals on the casing (20);
    其中，一个所述第二开孔(22)与至少两个所述第一开孔(14)连通。Wherein, one of the second openings (22) communicates with at least two of the first openings (14).
  2. 根据权利要求1所述的液压回转接头(100)，其中，所述芯轴(10)上还设置有轴向过孔(16)，所述轴向过孔(16)沿所述芯轴(10)的轴向贯穿所述芯轴(10)。The hydraulic rotary joint (100) according to claim 1, wherein the mandrel (10) is further provided with an axial through hole (16), and the axial through hole (16) is arranged along the mandrel (16). The axial direction of 10) runs through the mandrel (10).
  3. 根据权利要求1所述的液压回转接头(100)，其中，多个所述第一开孔(14)沿所述芯轴(10)的径向方向设置；所述第二开孔(22)包括至少两个，每个所述第二开孔(22)的外端位于所述外壳(20)的外侧，每个所述第二开孔(22)的内端通过周向环槽与至少两个所述第一开孔(14)连通。The hydraulic rotary joint (100) according to claim 1, wherein a plurality of the first openings (14) are arranged along the radial direction of the mandrel (10); the second openings (22) At least two are included, the outer end of each second opening (22) is located on the outer side of the casing (20), and the inner end of each second opening (22) is connected to at least two through a circumferential annular groove. The first openings (14) communicate with each other.
  4. 根据权利要求1至3中任一项所述的液压回转接头(100)，其中，所述外壳(20)包括壳体(23)和设置在所述壳体(23)上的多个凸起(24)，多个所述凸起(24)沿所述外壳(20)的径向朝远离所述芯轴(10)的方向凸出，多个所述第二开孔(22)的外端一一对应地设置于多个所述凸起(24)上。The hydraulic swivel joint (100) according to any one of claims 1 to 3, wherein the housing (20) comprises a housing (23) and a plurality of protrusions provided on the housing (23) (24), a plurality of the protrusions (24) protrude in a direction away from the mandrel (10) along the radial direction of the casing (20), and the outer surfaces of the plurality of second openings (22) are The ends are arranged on the plurality of protrusions (24) in a one-to-one correspondence.
  5. 根据权利要求1至3中任一项所述的液压回转接头(100)，其中，所述液压回转接头(100)还包括多个密封件(30)，多个所述密封件(30)设置在所述芯轴(10)和所述外壳(20)之间，多个所述密封件(30)包括O形密封圈和/或唇型金属密封环。The hydraulic rotary joint (100) according to any one of claims 1 to 3, wherein the hydraulic rotary joint (100) further comprises a plurality of seals (30), and the plurality of seals (30) are provided Between the mandrel (10) and the housing (20), a plurality of the seals (30) include O-rings and/or lip metal seals.
  6. 根据权利要求5所述的液压回转接头(100)，其中，所述芯轴(10)具有第一端面(11)和与所述第一端面(11)背向设置的第二端面(13)，所述芯轴(10)上设置有多个沿轴向间隔设置的密封槽(50)，多个所述密封件 (30)设置在多个所述密封槽(50)内，多个所述第二开孔(22)中最靠近所述第一端面(11)的所述第二开孔(22)与所述第一端面(11)之间，至少设置有一个所述密封槽(50)，多个所述第二开孔(22)中最靠近所述第二端面(13)的所述第二开孔(22)与所述第二端面(13)之间，至少设置有一个所述密封槽(50)，多个所述第二开孔(22)中任意相邻的两个所述第二开孔(22)之间设置有至少一个所述密封槽(50)。The hydraulic swivel joint (100) according to claim 5, wherein the mandrel (10) has a first end face (11) and a second end face (13) arranged facing away from the first end face (11) The mandrel (10) is provided with a plurality of sealing grooves (50) spaced apart in the axial direction, a plurality of the sealing members (30) are arranged in the plurality of the sealing grooves (50), and a plurality of the sealing grooves (50) are provided. At least one of the sealing grooves ( 50), between the second opening (22) closest to the second end surface (13) and the second end surface (13) among the plurality of second openings (22), at least a One sealing groove (50), and at least one sealing groove (50) is provided between any two adjacent second openings (22) among the plurality of second openings (22).
  7. 根据权利要求5所述的液压回转接头(100)，其中，所述外壳(20)具有第三端面(26)和与所述第三端面(26)背向设置的第四端面(28)，所述外壳(20)上设置有多个沿轴向间隔设置的密封槽(50)，多个所述密封件(30)设置在多个所述密封槽(50)内，多个所述第二开孔(22)中最靠近所述第三端面(26)的所述第二开孔(22)与所述第三端面(26)之间，至少设置有一个所述密封槽(50)，多个所述第二开孔(22)中最靠近所述第四端面(28)的所述第二开孔(22)与所述第四端面(28)之间，至少设置有一个所述密封槽(50)，多个所述第二开孔(22)中任意相邻的两个所述第二开孔(22)之间设置有至少一个所述密封槽(50)。The hydraulic swivel joint (100) according to claim 5, wherein the housing (20) has a third end face (26) and a fourth end face (28) arranged facing away from the third end face (26), The housing (20) is provided with a plurality of sealing grooves (50) spaced apart in the axial direction, a plurality of the sealing members (30) are arranged in the plurality of the sealing grooves (50), and a plurality of the first At least one sealing groove (50) is provided between the second opening (22) closest to the third end surface (26) and the third end surface (26) among the two openings (22) , between the second opening (22) closest to the fourth end surface (28) and the fourth end surface (28) among the plurality of second openings (22), at least one of the second openings (22) is provided. The sealing groove (50) is provided, and at least one sealing groove (50) is provided between any two adjacent second openings (22) among the plurality of second openings (22).
  8. 一种电液回转连接装置(400)，其中，所述电液回转连接装置(400)包括如权利要求1至7中任一项所述的液压回转接头(100)和套设在所述液压回转接头(100)外周上的电滑环(40)。An electro-hydraulic rotary connection device (400), wherein the electro-hydraulic rotary connection device (400) comprises the hydraulic rotary joint (100) according to any one of claims 1 to 7 and a hydraulic rotary joint (100) sleeved on the hydraulic The electric slip ring (40) on the outer circumference of the rotary joint (100).
  9. 根据权利要求8所述的电液回转连接装置(400)，其中，所述电滑环(40)包括：The electro-hydraulic rotary connection device (400) according to claim 8, wherein the electric slip ring (40) comprises:
    电滑环本体(42)，套设在所述外壳(20)的外周上；an electric slip ring body (42) sleeved on the outer circumference of the casing (20);
    电滑环转子出线端(44)，设置在所述芯轴(10)上，所述电滑环转子出线端(44)与所述电滑环本体(42)之间设置有导通电路；The electric slip ring rotor outlet end (44) is arranged on the mandrel (10), and a conducting circuit is provided between the electric slip ring rotor outlet end (44) and the electric slip ring body (42);
    电滑环定子出线端(46)，设置在所述电滑环本体(42)上。The electric slip ring stator outlet end (46) is arranged on the electric slip ring body (42).
  10. 一种作业车辆，其中，包括：A work vehicle comprising:
    底盘；chassis;
    作业装置，旋转设置于所述底盘上；a working device, rotatably arranged on the chassis;
    如权利要求1至7中任一项所述的液压回转接头(100)，所述液压回转接头(100)设置于所述底盘与所述作业装置之间；或如权利要求8或9所述的 电液回转连接装置(400)，所述电液回转连接装置(400)设置于所述底盘与所述作业装置之间。The hydraulic swivel joint (100) according to any one of claims 1 to 7, wherein the hydraulic swivel joint (100) is provided between the chassis and the working device; or as claimed in claim 8 or 9 The electro-hydraulic rotary connection device (400) is provided between the chassis and the working device.
PCT/CN2021/102277 2020-09-30 2021-06-25 Hydraulic rotary joint, electro-hydraulic rotary connecting device and operating vehicle WO2022068286A1 (en)

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CN202011063527.0 2020-09-30
CN202022210722.3 2020-09-30
CN202022210722.3U CN212455894U (en) 2020-09-30 2020-09-30 Hydraulic swivel joint, electro-hydraulic swivel connecting device and work vehicle
CN202011063527.0A CN112082027A (en) 2020-09-30 2020-09-30 Hydraulic swivel joint, electro-hydraulic swivel connecting device and work vehicle

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CN211501988U (en) * 2019-12-27 2020-09-15 湖北哈佛水泥机械有限公司 Hollow shaft multi-way rotary joint device with collecting ring
CN111322480A (en) * 2020-03-30 2020-06-23 江苏腾旋科技股份有限公司 High-durability rotary joint for wind power generation equipment
CN112082027A (en) * 2020-09-30 2020-12-15 三一汽车制造有限公司 Hydraulic swivel joint, electro-hydraulic swivel connecting device and work vehicle
CN212455894U (en) * 2020-09-30 2021-02-02 三一汽车制造有限公司 Hydraulic swivel joint, electro-hydraulic swivel connecting device and work vehicle

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