Hydraulic fitting assembly and hydraulic transmission device

Abstract

The application discloses a hydraulic joint assembly and a hydraulic transmission device, and belongs to the technical field of pressure transmission. The hydraulic joint assembly comprises a driving pump female joint and a device male joint. The driving pump female joint is provided with a driving core. The driving core is internally provided with a driving oil supply channel and a driving oil return channel. The driving core is externally provided with a sealing ring which can slide along the driving core. The device male joint is provided with a joint core which corresponds to the sealing ring. The joint core is internally provided with a working oil supply channel and a working oil return channel. The joint core is provided with a containing cavity. The containing cavity contains a sealing element which can slide along the containing cavity. The sealing element is correspondingly arranged with the driving core. When the device male joint is inserted into the driving pump female joint, the joint core and the driving core respectively push the sealing ring and the sealing element to slide, so that the device male joint is in communication with the driving pump female joint. The hydraulic joint assembly provided by the application can realize the quick connection between a working device and a driving pump.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic transmission, in particular to a hydraulic joint assembly and a hydraulic transmission device. BACKGROUND

[0002] The driving pump of the hydraulic transmission device is connected with the working equipment through the oil pipe, and the oil pipe delivers hydraulic oil to the working equipment, thereby driving the working equipment to work. At present, the hydraulic joint between the driving pump and the working equipment is mostly connected by threads or flanges. These connections are fixed, and the installation or dismounting of the hydraulic joint is very inconvenient, and the installation efficiency is low. Therefore, it is an urgent technical problem to provide a hydraulic joint which is convenient to install or dismount. SUMMARY

[0003] The present application provides a hydraulic joint assembly, which can solve the problem of inconvenient installation or dismounting of the hydraulic joint.

[0004] To solve the above technical problems, the present application provides a hydraulic joint assembly, which comprises a driving pump female joint and an equipment male joint. The driving pump female joint is provided with a driving core. The driving core is internally provided with a driving oil supply channel and a driving oil return channel. The driving core is externally provided with a sealing ring which can slide along the driving core. When the driving pump female joint is disconnected from the equipment male joint, the sealing ring seals the driving oil supply channel and the driving oil return channel. The equipment male joint is provided with a joint core corresponding to the sealing ring. The joint core is internally provided with a working oil supply channel and a working oil return channel. The joint core is provided with a receiving cavity. The receiving cavity accommodates a sealing member which can slide along the receiving cavity. The sealing member is arranged corresponding to the driving core. When the equipment male joint is disconnected from the driving pump female joint, the sealing member seals the working oil supply channel and the working oil return channel. When the equipment male joint is inserted into the driving pump female joint, the joint core and the driving core respectively push the sealing ring and the sealing member to slide, so as to make the driving oil supply channel and the driving oil return channel respectively communicate with the working oil supply channel and the working oil return channel.

[0005] The present application provides a hydraulic transmission device, which comprises a driving pump and a working equipment. The driving pump drives the working equipment to work through hydraulic oil. The driving pump and the working equipment are connected by using the hydraulic joint assembly as described above.

[0006] The hydraulic joint assembly provided by the present application is provided with the driving core which is externally provided with the sealing ring for sealing the driving oil supply channel and the driving oil return channel. The joint core is internally provided with the sealing member for sealing the working oil supply channel and the working oil return channel. The joint core and the sealing member are respectively arranged corresponding to the sealing ring and the driving core. The joint core and the driving core can respectively push the sealing ring and the sealing member to slide, so as to make the equipment male joint communicate with the driving pump female joint. The equipment male joint can be conveniently inserted into or pulled out of the driving pump female joint, thereby realizing the quick connection between the working equipment and the driving pump. BRIEF DESCRIPTION OF DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and all other drawings obtained by those skilled in the art without any creative effort are within the scope of the present application.

[0008] Figure 1 is a structural schematic diagram of an embodiment of the hydraulic joint assembly provided by the present application;

[0009] Figure 2 is an exploded structural schematic diagram of an embodiment of the hydraulic joint assembly provided by the present application;

[0010] Figure 3 is a connection structural schematic diagram of an embodiment of the hydraulic joint assembly provided by the present application;

[0011] Figure 4 is a structural schematic diagram of another embodiment of the drive pump female joint provided by the present application;

[0012] Figure 5 is a structural schematic diagram of an embodiment of the hydraulic transmission device provided by the present application. DETAILED DESCRIPTION

[0013] The present application will be further described in detail below in combination with the drawings and embodiments. It is particularly pointed out that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only some embodiments of the present application, but not all embodiments, and all other embodiments obtained by those skilled in the art without any creative effort are within the scope of the present application.

[0014] In the description of the application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited. The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can explicitly or implicitly include at least one of the features. All directional indications (such as upper, lower, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. The terms "comprise" and "have" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or components inherent to the process, method, product or device.

[0015] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the application. The appearances of the phrase that in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0016] The application provides a hydraulic joint assembly. Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 1 is a structural schematic diagram of an embodiment of the hydraulic joint assembly provided by the application, Figure 2 is an exploded structural schematic diagram of an embodiment of the hydraulic joint assembly provided by the application, Figure 3Figure 1 is a schematic view of a connection structure of an embodiment of the hydraulic joint assembly provided in the present application. The hydraulic joint assembly 100 can include a drive pump female joint 10 and a device male joint 20. The hydraulic joint assembly 100 is used to connect a drive pump and a working device, and the drive pump can drive the working device to work through hydraulic oil. The drive core 11 is arranged on the drive pump female joint 10, and the drive oil supply channel 111 and the drive oil return channel 112 are arranged in the drive core 11. The hydraulic oil output by the drive pump flows to the working device through the drive oil supply channel 111, and the hydraulic oil can flow back to the oil tank from the drive oil return channel 112 after driving the working device to work. Specifically, the drive core 11 can be in a columnar shape, and the drive oil supply channel 111 and the drive oil return channel 112 can be arranged along the axial direction of the drive core 11. The openings of the drive oil supply channel 111 and the drive oil return channel 112 are directed to the outer periphery of the drive core 11, so as to be in communication with the device male joint 20.

[0017] The drive core 11 is sleeved with a sealing ring 12 which can slide along the drive core 11. When the drive pump female joint 10 is disconnected from the device male joint 20, the sealing ring 12 slides in the direction of connecting the device male joint 20, and the inner side wall of the sealing ring 12 abuts against the outer side wall of the drive core 11, thereby sealing the drive oil supply channel 111 and the drive oil return channel 112, so that the hydraulic oil cannot leak.

[0018] The device male joint 20 is provided with a joint core 21 corresponding to the sealing ring 12, and the joint core 21 is arranged with a working oil supply channel 211 and a working oil return channel 212. The joint core 21 is provided with a containing cavity 213, and the containing cavity 213 contains a sealing element 22 which can slide along the containing cavity 213. The sealing element 22 is arranged corresponding to the drive core 11. Specifically, the joint core 21 can be in a columnar shape, and the working oil supply channel 211 and the working oil return channel 212 can be arranged along the axial direction of the joint core 21. The openings of the working oil supply channel 211 and the working oil return channel 212 are directed to the containing cavity 213, and the openings of the working oil supply channel 211 and the working oil return channel 212 are arranged corresponding to the openings of the drive oil supply channel 111 and the drive oil return channel 112, so as to be in communication with the drive pump female joint 10. The cross-sectional area of the containing cavity 213 and the sealing element 22 away from the end connected to the drive pump female joint 10 can be greater than the cross-sectional area of the opposite end close to the connection of the drive pump female joint 10, so that the containing cavity 213 can limit the sliding stroke of the sealing element 22, thereby preventing the sealing element 22 from sliding out of the containing cavity 213. When the device male joint 20 is disconnected from the drive pump female joint 10, the sealing element 22 slides in the direction of connecting the drive pump female joint 10, and the outer side wall of the sealing element 22 abuts against the inner side wall of the joint core 21, thereby sealing the working oil supply channel 211 and the working oil return channel 212.

[0019] When the equipment male joint 20 is inserted into the driving pump female joint 10, the joint core 21 and the driving core 11 push the sealing ring 12 and the sealing member 22 to slide, respectively, so as to make the driving oil supply channel 111 and the driving oil return channel 112 communicate with the working oil supply channel 211 and the working oil return channel 212, respectively.

[0020] The hydraulic joint assembly 100 provided in the present application is provided with the sealing ring 12 which seals the driving oil supply channel 111 and the driving oil return channel 112 outside the driving core 11, and the sealing member 22 which seals the working oil supply channel 211 and the working oil return channel 212 inside the joint core 21. The joint core 21 and the sealing member 22 are arranged correspondingly to the sealing ring 12 and the driving core 11, respectively. The joint core 21 and the driving core 11 can push the sealing ring 12 and the sealing member 22 to slide, respectively, so as to make the equipment male joint 20 communicate with the driving pump female joint 10, and the equipment male joint 20 can be inserted into or pulled out of the driving pump female joint 10 conveniently, thereby realizing the quick connection between the working equipment and the driving pump.

[0021] In an embodiment, the sealing ring 12 is provided with an oil return groove 121 around the periphery, please refer to Figure 4 , Figure 4 is a structural schematic diagram of another embodiment of the driving pump female joint provided in the present application. The oil return groove 121 communicates the driving oil supply channel 111 and the driving oil return channel 112. When the driving pump female joint 10 is disconnected from the equipment male joint 20, the hydraulic oil in the driving oil supply channel 111 can flow to the driving oil return channel 112 through the oil return groove 121, which can avoid the high-pressure oil in the driving oil supply channel 111 being blocked due to the misoperation of the driving pump when the connection is disconnected, and improve the safety of the driving pump female joint 10.

[0022] Please continue to refer to Figures 1 to 3 In order to make the connection between the equipment male joint 20 and the driving pump female joint 10 more firm, the driving pump female joint 10 is provided with a fixing part 13. The fixing part 13 is provided with a containing space 131. The driving core 11 and the sealing ring 12 are contained in the containing space 131. The fixing part 13 is fixedly connected with the driving core 11. The fixing part 13 is provided with a through limiting hole 132. A locking pin 133 is arranged in the limiting hole 132. The joint core 21 is provided with a limiting groove 214 corresponding to the limiting hole 132. When the equipment male joint 20 is inserted into the driving pump female joint 10, the locking pin 133 passes through the limiting hole 132 and is clamped in the limiting groove 214, so as to lock the joint core 21 in the containing space 131.

[0023] In an embodiment, the fixed part 13 is provided with a protruding column 134, and the sealing ring 12 is provided with a flange 122 at the end close to the equipment male joint 20, the protruding column 134 and the flange 122 cooperate to limit the sliding stroke of the sealing ring 12. Specifically, when the equipment male joint 20 is pulled out of the driving pump female joint 10, the sealing ring 12 slides quickly in the direction of connecting the equipment male joint 20 to seal the driving oil supply channel 111 and the driving oil return channel 112, at this time, the protruding column 134 and the flange 122 abut, so that the sealing ring 12 will not slide out of the driving core 11 and separate from the driving core 11.

[0024] Further, in order to facilitate locking or unlocking the equipment male joint 20, in an embodiment, the driving pump female joint 10 comprises a fixed ring 14, the fixed ring 14 is sleeved on the outside of the fixed part 13, and the end of the fixed ring 14 close to the equipment male joint 20 abuts on the outer side wall of the fixed part 13, when the equipment male joint 20 is inserted into the driving pump female joint 10, the fixed ring 14 limits the sliding of the locking pin 133 along the limiting hole 132 and locks the joint core 21 in the containing space 131. The inner side wall of the opposite end of the fixed ring 14 away from the equipment male joint 20 is provided with a groove 141, when it is needed to unlock the equipment male joint 20, the groove 141 is slid to the limiting hole 132, and the locking pin 133 can move into the groove 141 to unlock the joint core 21.

[0025] In an embodiment, the end of the fixed ring 14 close to the equipment male joint 20 is provided with a snap spring 142 to limit the sliding stroke of the fixed ring 14.

[0026] In order to facilitate pushing and pulling the fixed ring 14, in an embodiment, the outer side wall of the fixed ring 14 is provided with a pushing and pulling piece 143. The pushing and pulling piece 143 can be a pull ring connected with the outer side wall of the fixed ring 14, a columnar protrusion, or a plate-shaped flange provided along the outer periphery of the fixed ring 14, all the above settings can increase the force arm when pushing and pulling the fixed ring 14, so that it is more labor-saving to push and pull the fixed ring 14.

[0027] In an embodiment, the sealing ring 12, the sealing member 22 and the fixing ring 14 are respectively provided with a first spring 123, a second spring 221 and a third spring 144, so that the sealing ring 12, the sealing member 22 and the fixing ring 14 can slide along the driving core 11, the accommodating cavity 213 and the fixing portion 13 respectively. When the equipment male connector 20 is inserted into the driving pump female connector 10, the connector core 21 and the driving core 11 push the sealing ring 12 and the sealing member 22 to slide respectively, so that the first spring 123 and the second spring 221 are compressed, and at the same time, the third spring 144 pushes the fixing ring 14 to move in the direction of connecting the equipment male connector 20, so as to lock the connector core 21 in the accommodating space 131; when the equipment male connector 20 is pulled out of the driving pump female connector 10, the first spring 123 and the second spring 221 quickly recover the deformation, the first spring 123 pushes the sealing ring 12 to seal the driving oil supply channel 111 and the driving oil return channel 112, and the second spring 221 pushes the sealing member 22 to seal the working oil supply channel 211 and the working oil return channel 212, so as to avoid hydraulic oil leakage when the equipment male connector 20 is connected and disconnected with the driving pump female connector 10.

[0028] In an embodiment, the outer side wall of the sealing ring 12 and the inner side wall of the sealing member 22 are respectively provided with a sealing ring 15, so as to enhance the airtightness between the sealing ring 12 and the driving core 11 and between the sealing member 22 and the connector core 21.

[0029] The present application provides a hydraulic transmission device, please refer to Figure 5 , Figure 5 is a structural schematic diagram of an embodiment of the hydraulic transmission device provided by the present application. The hydraulic transmission device 300 comprises a driving pump 310 and a working equipment 320, the driving pump 310 drives the working equipment 320 to work through hydraulic oil, and the hydraulic joint assembly 100 described above is used for connecting between the driving pump 310 and the working equipment 320. In the scene of rescue and disaster relief, it may be necessary to alternately use a plurality of working equipment 320, but the number of driving pumps 310 is limited, and since the hydraulic joint assembly 100 can quickly connect the working equipment 320 and the driving pump 310, it is convenient to switch the working equipment 320 connected with the driving pump 310.

[0030] The hydraulic joint assembly provided by the present application has at least the following beneficial effects:

[0031] 1. The hydraulic joint assembly 100 provided by the present application, the connector core 21 and the sealing member 22 are respectively arranged correspondingly with the sealing ring 12 and the driving core 11, the connector core 21 and the driving core 11 can respectively push the sealing ring 12 and the sealing member 22 to slide to connect the equipment male connector 20 and the driving pump female connector 10, so that the equipment male connector 20 can be conveniently inserted or taken out of the driving pump female connector 10, thereby realizing the quick connection between the working equipment and the driving pump.

[0032] 2. The outer periphery of the sealing ring 12 is provided with an oil return groove 121, which is communicated with the driving oil supply channel 111 and the driving oil return channel 112, so that the high-pressure oil can be prevented from being blocked in the driving oil supply channel 111 due to the misoperation of the driving pump under the condition that the connection is disconnected, and the safety of the driving pump female connector 10 is improved.

[0033] 3. The fixed ring 14, the locking pin 133 and the third spring 144 are arranged, so that the equipment male connector 20 can be quickly locked or unlocked.

[0034] The above only describes some embodiments of the present application, and does not limit the protection scope of the present application, and any equivalent device or equivalent process transformation, or direct or indirect application in other related technical fields by using the content of the specification and drawings of the present application, are also included in the patent protection scope of the present application.

Claims

1. A hydraulic joint assembly, characterized in that, include: The device includes a female drive pump connector and a male device connector. The female drive pump connector is equipped with a drive core. The drive core has a drive oil supply channel and a drive oil return channel. The drive core is fitted with a sealing ring that can slide along the drive core. When the female drive pump connector is disconnected from the male device connector, the sealing ring seals the drive oil supply channel and the drive oil return channel. The male connector of the equipment is provided with a connector core corresponding to the sealing ring. The connector core has a working oil supply channel and a working oil return channel. The connector core has a receiving cavity, which houses a sealing element that can slide along the receiving cavity. The sealing element is correspondingly provided with the drive core. When the male connector of the equipment is disconnected from the female connector of the drive pump, the sealing element seals the working oil supply channel and the working oil return channel. When the male connector of the device is inserted into the female connector of the drive pump, the connector core and the drive core respectively push the sealing ring and the sealing element to slide, so that the drive oil supply channel and the drive oil return channel are respectively connected to the working oil supply channel and the working oil return channel; The female connector of the drive pump includes a fixing part, the fixing part is provided with a receiving space, the drive core and the sealing ring are both received in the receiving space, and the fixing part is fixedly connected to the drive core; The fixing part has a through limiting hole, and a locking pin is provided in the limiting hole. The connector core is provided with a limiting groove corresponding to the limiting hole. When the male connector of the equipment is inserted into the female connector of the drive pump, the locking pin passes through the limiting hole and is locked in the limiting groove to lock the connector core in the accommodating space. The outer wall of the sealing ring and the inner wall of the sealing element are respectively provided with sealing rings.

2. The hydraulic joint assembly according to claim 1, characterized in that, The female connector of the drive pump includes a retaining ring, which is slidably sleeved outside the fixed part. One end of the retaining ring near the male connector of the equipment abuts against the outer wall of the fixed part to restrict the locking pin from sliding along the limiting hole and lock the connector core in the accommodating space. The inner wall of the fixed ring at the opposite end of the male connector of the device is provided with a groove. When the groove slides to the limiting hole, the locking pin can move into the groove to unlock the connector core.

3. The hydraulic joint assembly according to claim 2, characterized in that, A retaining ring is provided at one end of the retaining ring near the male connector of the device to limit the sliding stroke of the retaining ring.

4. The hydraulic joint assembly according to claim 2, characterized in that, A push-pull component is provided on the outer wall of the fixed ring to facilitate pushing and pulling the fixed ring.

5. The hydraulic joint assembly according to claim 1, characterized in that, The fixing part is provided with a protruding post, and the sealing ring is provided with a corresponding flange at the end near the male connector of the equipment. The protruding post and the flange cooperate to limit the sliding stroke of the sealing ring.

6. The hydraulic joint assembly according to claim 1, characterized in that, The sealing ring has an oil return groove on its outer periphery. The oil return groove connects the drive oil supply channel and the drive oil return channel. When the female connector of the drive pump is disconnected from the male connector of the equipment, the hydraulic oil in the drive oil supply channel can flow to the drive oil return channel through the oil return groove.

7. The hydraulic joint assembly according to claim 2, characterized in that, The sealing ring, the sealing element, and the fixing ring are respectively provided with a first spring, a second spring, and a third spring, so that the sealing ring, the sealing element, and the fixing ring can slide along the driving core, the accommodating cavity, and the fixing part, respectively.

8. A hydraulic transmission device, characterized in that, include: A drive pump and a working device, wherein the drive pump drives the working device to perform work via hydraulic oil, and the drive pump and the working device are connected by a hydraulic joint assembly as described in any one of claims 1-7.

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