Interface structure, hydraulic pump and vehicle

Abstract

The embodiment of the application provides an interface structure, a hydraulic pump and a vehicle, the interface structure comprises a hydraulic block and a hydraulic pipe joint; the hydraulic block is provided with a connecting groove, the connecting groove comprises a bottom wall, the bottom wall is provided with a sealing recess, the sealing recess has a first sealing surface extending in the circumferential direction thereof; the hydraulic pipe joint comprises a connecting pipe, the connecting pipe is used for being connected with the connecting groove, the connecting pipe is provided with a sealing protrusion, the sealing protrusion has a second sealing surface extending in the circumferential direction thereof; in the case where the connecting pipe is connected to the connecting groove, the sealing protrusion is embedded in the sealing recess and the second sealing surface abuts against the first sealing surface. Since the connecting groove is provided with the sealing recess and the connecting pipe is provided with the sealing protrusion, the reliable sealing of the interface structure can be realized through the abutment of the first sealing surface of the sealing recess and the second sealing surface of the sealing protrusion, the sealing stability of the interface structure is improved, the risk of hydraulic oil leakage is reduced, and the working reliability of the hydraulic pump is improved.

Description

Technical Field

[0001] This application belongs to the field of hydraulic pump technology, specifically relating to an interface structure, a hydraulic pump, and a vehicle. Background Technology

[0002] The interface structure is a common structure of hydraulic pumps. It usually includes a hydraulic pipe joint and an interface set in the hydraulic block. By connecting the hydraulic pipe joint to the interface, a reliable connection between the hydraulic pipe and the hydraulic block can be achieved so as to transport hydraulic oil.

[0003] However, the existing interface structure has poor sealing stability and is prone to hydraulic oil leakage, which affects the working reliability of the hydraulic pump. Utility Model Content

[0004] This application aims to provide an interface structure, a hydraulic pump, and a vehicle to solve the problem that the existing interface structure has poor sealing stability, is prone to hydraulic oil leakage, and affects the reliability of the hydraulic pump.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, this application discloses an interface structure, including: a hydraulic block and a hydraulic pipe joint;

[0007] The hydraulic block is provided with a connecting groove, the connecting groove includes a bottom wall, the bottom wall is provided with a sealing recess, and the sealing recess has a first sealing surface extending circumferentially thereon;

[0008] The hydraulic pipe fitting includes a connecting pipe for connecting to the connecting groove, and the connecting pipe is provided with a sealing protrusion having a second sealing surface extending circumferentially thereon.

[0009] When the connecting pipe is connected to the connecting groove, the sealing protrusion is embedded in the sealing recess and the second sealing surface abuts against the first sealing surface.

[0010] Optionally, the first sealing surface and the second sealing surface are conical sealing surfaces.

[0011] Optionally, the cone angle of the conical sealing surface is 100° to 140°.

[0012] Optionally, the first sealing surface and the second sealing surface are spherical sealing surfaces.

[0013] Optionally, the hydraulic block is provided with a first channel, which communicates with the sealing recess;

[0014] The connecting pipe extends in a first direction, and the connecting pipe is provided with a second channel extending along the first direction. When the connecting pipe is connected to the connecting groove, the second channel communicates with the first channel.

[0015] Optionally, the connecting groove includes a sidewall, and the first sealing surface includes a first edge near the center of the connecting groove, the first edge extending to the sidewall;

[0016] And / or, the connecting pipe includes a pipe wall, and the second sealing surface includes a third edge near the center of the connecting pipe, the third edge extending to the pipe wall.

[0017] Optionally, the junction of the first edge and the sidewall, and / or the junction of the third edge and the pipe wall, are formed by a sharp angle transition.

[0018] Optionally, the first channel includes a first channel wall, and the first sealing surface includes a second edge remote from the center of the connecting groove, the second edge extending to the first channel wall;

[0019] And / or, the second channel includes a second channel wall, and the second sealing surface includes a fourth edge remote from the center of the connecting tube, the fourth edge extending to the second channel wall.

[0020] Optionally, the junction of the second edge and the first channel wall, and / or the junction of the fourth edge and the second channel wall, are formed by a sharp angle transition.

[0021] Optionally, the first channel has a first axis, and the second channel has a second axis, which coincides with the first axis.

[0022] Optionally, the first channel has a first cross-section perpendicular to the first direction, and the second channel has a second cross-section perpendicular to the first direction, the second cross-section having the same dimensions as the first cross-section.

[0023] Optionally, the extension direction of the connecting pipe is a first direction, and multiple first sealing surfaces are provided, with the multiple first sealing surfaces spaced apart in the first direction;

[0024] The second sealing surface is provided in multiple ways, and the multiple second sealing surfaces are spaced apart in the first direction, with one second sealing surface abutting against one first sealing surface.

[0025] Optionally, the sealing recess further includes: at least one first transition sealing surface extending along the first direction, wherein the first transition sealing surface is disposed between two adjacent first sealing surfaces and connected to the two adjacent first sealing surfaces;

[0026] The sealing protrusion further includes: at least one second transition sealing surface extending along the first direction, wherein the second transition sealing surface is disposed between two adjacent second sealing surfaces and connected to the two adjacent second sealing surfaces;

[0027] In this process, one of the first transition sealing surfaces abuts against one of the second transition sealing surfaces.

[0028] Optionally, the connecting pipe includes a pipe wall, at least a portion of which is provided with a first thread;

[0029] The connecting groove includes a sidewall, at least a portion of which is provided with a second thread, which engages with the first thread for connection.

[0030] Optionally, the hydraulic block is a structure formed by computer numerical control milling.

[0031] Optionally, the hydraulic pipe joint is a structure formed by computer numerical control grinding process.

[0032] Secondly, this application also discloses a hydraulic pump, including the aforementioned interface structure.

[0033] Thirdly, this application also discloses a vehicle, including the aforementioned interface structure or a hydraulic pump.

[0034] In this embodiment, the connecting groove has a sealing recess with a first sealing surface, and the connecting pipe has a sealing protrusion with a second sealing surface. Thus, when the connecting pipe is connected to the connecting groove, the sealing protrusion is embedded in the sealing recess. Through the contact between the second sealing surface and the first sealing surface, a surface seal between the connecting pipe and the connecting groove can be achieved, thereby improving the sealing stability of the interface structure, reducing the risk of hydraulic oil leakage, and improving the operational reliability of the hydraulic pump. Furthermore, placing the sealing recess in the connecting groove and the sealing protrusion in the connecting pipe simplifies the structure of the connecting groove and the connecting pipe, reducing processing difficulty. This not only reduces processing costs but also improves processing accuracy, enhancing the sealing effect of the first and second sealing surfaces. This further improves the sealing stability of the interface structure, reduces the risk of hydraulic oil leakage, and further improves the operational reliability of the hydraulic pump.

[0035] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0036] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0037] Figure 1 This is a schematic diagram of the structure of a hydraulic block in related technologies;

[0038] Figure 2 This is a schematic diagram of the connecting groove in related technologies;

[0039] Figure 3 This is a schematic diagram of an interface structure provided in an embodiment of this application;

[0040] Figure 4 This is a schematic diagram of a connecting groove provided in an embodiment of this application;

[0041] Figure 5 This is one of the structural schematic diagrams of a hydraulic pipe joint provided in the embodiments of this application;

[0042] Figure 6 This is a second schematic diagram of the structure of a hydraulic pipe joint provided in the embodiments of this application;

[0043] Figure 7 This is a schematic diagram of another connecting groove provided in an embodiment of this application;

[0044] Figure 8 This is a schematic diagram of another hydraulic pipe joint provided in the embodiments of this application.

[0045] Reference numerals: 1. Hydraulic block; 11. Connecting groove; 111. Sealing recess; 1111. First sealing surface; 11111. First edge; 11112. Second edge; 1112. First transition sealing surface; 112. Side wall; 1121. Second thread; 12. First channel; 121. First channel wall.

[0046] 2. Hydraulic pipe fitting, 21. Connecting pipe, 211. Sealing protrusion, 2111. Second sealing surface, 21111. Third edge, 21112. Fourth edge, 2112. Second transition sealing surface, 212. Second channel, 2121. Second channel wall, 213. Pipe wall, 2131. First thread,

[0047] X. First direction. Detailed Implementation

[0048] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0049] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0050] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] This application provides an interface structure, which will be described in detail below with reference to the accompanying drawings.

[0053] Reference Figure 1 The diagram shows a schematic representation of the structure of a hydraulic block in the relevant art. Figure 2 The diagram shows a schematic of the connecting groove in the related art, with reference to... Figure 3 The diagram shows a structural schematic of an interface structure provided in an embodiment of this application. (Refer to...) Figures 4 to 6 This diagram illustrates a structural schematic of a connecting groove and hydraulic pipe joint provided in an embodiment of this application. (Refer to...) Figures 7 to 8 The diagram shows a structural schematic of another connecting groove and hydraulic pipe joint provided in an embodiment of this application.

[0054] like Figures 3 to 6 As shown, this application provides an interface structure, including: a hydraulic block 1 and a hydraulic pipe connector 2; the hydraulic block 1 is provided with a connecting groove 11, the connecting groove 11 includes a bottom wall, the bottom wall is provided with a sealing recess 111, the sealing recess 111 has a first sealing surface 1111 extending circumferentially therefrom; the hydraulic pipe connector 2 includes a connecting pipe 21, the connecting pipe 21 is used to connect to the connecting groove 11, the connecting pipe 21 is provided with a sealing protrusion 211, the sealing protrusion 211 has a second sealing surface 2111 extending circumferentially therefrom; when the connecting pipe 21 is connected to the connecting groove 11, the sealing protrusion 211 is embedded in the sealing recess 111 and the second sealing surface 2111 abuts against the first sealing surface 1111. Specifically, the sealing recess 111 may be formed by at least a portion of the bottom wall of the connecting groove 11 recessed in a direction away from the center of the connecting groove 11, and the sealing protrusion 211 may be formed by at least a portion of the end face of the connecting pipe 21 protruding in a direction away from the center of the connecting pipe 21.

[0055] In this embodiment, the connecting groove 11 is provided with a sealing recess 111, which has a first sealing surface 1111, and the connecting pipe 21 is provided with a sealing protrusion 211, which has a second sealing surface 2111. Thus, when the connecting pipe 21 is connected to the connecting groove 11, the sealing protrusion 211 is embedded in the sealing recess 111. Through the contact between the second sealing surface 2111 and the first sealing surface 1111, a surface seal can be achieved between the connecting pipe 21 and the connecting groove 11. This improves the sealing stability of the interface structure, reduces the risk of hydraulic oil leakage, and helps improve the operational reliability of the hydraulic pump. Furthermore, setting the sealing recess 111 in the connecting groove 11 and the sealing protrusion 211 in the connecting pipe 21 can simplify the structure of the connecting groove 11 and the connecting pipe 21 and reduce the processing difficulty. In this way, not only can the processing cost be reduced, but the processing accuracy can also be improved, thereby enhancing the sealing effect of the first sealing surface 1111 and the second sealing surface 2111. This can further improve the sealing stability of the interface structure, reduce the risk of hydraulic oil leakage, and help to further improve the working reliability of the hydraulic pump.

[0056] like Figures 1 to 2As shown, the interface structure of the related technology includes a hydraulic block 1 and a hydraulic pipe connector 2. The hydraulic block 1 is provided with a connecting groove 11, which includes a bottom wall and a sealing protrusion 211. The hydraulic pipe connector 2 includes a connecting pipe 21, which is provided with a sealing recess 111. Thus, when the connecting pipe 21 is connected to the connecting groove 11, the sealing recess 111 and the sealing protrusion 211 fit together to form a surface seal. Generally, before processing the interface structure, it is necessary to process corresponding cutting tools according to the shape and size of the interface structure. The applicant found that when processing the sealing protrusion 211 at the bottom of the connecting groove 11, it is necessary to process a concave cutting tool or a split cutting tool that matches the sealing protrusion 211 for multiple processing steps. Among these, the processing of concave cutting tools is more difficult, which not only increases the processing cost of the cutting tools but also reduces the processing accuracy of the cutting tools; while multiple processing steps make the processing steps cumbersome and prone to problems with reference point conversion. Taking the sealing surface of the sealing protrusion 211 as a conical sealing surface as an example, tests show that the machining runout (total runout) of the conical sealing surface can typically reach 0.2mm to 0.3mm, and the roughness can reach 0.8Ra to 1.6Pa. These issues result in lower precision and higher roughness in the machined sealing protrusion 211, leading to poor surface sealing between the sealing protrusion 211 and the sealing recess 111. This results in poor sealing stability of the interface structure and makes it prone to hydraulic oil leakage during long-term use, thus affecting the operational reliability of the hydraulic pump.

[0057] To improve the sealing stability of the interface structure, the applicant has designed a sealing recess 111 in the connecting groove 11 and a sealing protrusion 211 in the connecting pipe 21. This means that when machining the sealing recess 111 at the bottom of the connecting groove 11, only a convex tool that matches the sealing recess 111 needs to be machined, without needing to disassemble the tool. Furthermore, compared to a concave tool, a convex tool is easier to machine, reducing machining costs and improving machining accuracy. This results in a sealing protrusion 211 with higher precision and lower roughness, leading to a better surface sealing effect between the sealing protrusion 211 and the sealing recess 111. This enhances the sealing stability of the interface structure, reducing or even eliminating the risk of hydraulic oil leakage and improving the operational reliability of the hydraulic pump.

[0058] In practical applications, since the interface structure of this application embodiment is relatively simple, it can be manufactured using a process with high machining precision. In some optional embodiments of this application, the hydraulic block 1 is manufactured using computer numerical control milling (CNC milling). This improves the machining precision of the hydraulic block 1, thereby enhancing the surface sealing effect of the sealing protrusion 211 and the sealing recess 111, which is beneficial to improving the sealing stability of the interface structure. CNC milling is a machining process that uses a computer-controlled multi-point cutting tool (such as a milling cutter or drill bit) to gradually remove material from a workpiece to produce customized parts. It has high machining efficiency and limited surface roughness, making it suitable for parts with relatively complex shapes, such as the hydraulic block 1.

[0059] Furthermore, the hydraulic pipe connector 2 is a structure formed by computer numerical control (CNC) grinding, meaning that the hydraulic pipe connector 2 is formed by CNC grinding. This improves the machining accuracy of the hydraulic pipe connector 2, reduces roughness, and thus improves the surface sealing effect of the sealing protrusion 211 and the sealing recess 111, which is beneficial to improving the sealing stability of the interface structure. CNC grinding is a process of precision machining of the workpiece using abrasive tools such as grinding wheels. Computer control enables high-precision material removal, and it is often used in applications requiring extremely high surface finish. While its machining efficiency is low, it allows for precision machining and is suitable for relatively simple parts like the hydraulic pipe connector 2.

[0060] Taking the example that both the first sealing surface 1111 of the sealing recess 111 and the second sealing surface 2111 of the sealing protrusion 211 are conical sealing surfaces, tests show that the machining runout (total runout) of the first sealing surface 1111 of the sealing recess 111 can reach 0.05mm to 0.2mm, and the roughness can reach 0.2Ra to 0.8Ra. Similarly, the machining runout (total runout) of the second sealing surface 2111 of the sealing protrusion 211 can reach 0.05mm to 0.2mm, and the roughness can reach 0.05Ra to 0.2Ra. In summary, the accuracy of the sealing recess 111 and the sealing protrusion 211 in this embodiment is significantly improved, and the roughness is significantly reduced, resulting in better surface sealing of the sealing protrusion 211 and the sealing recess 111. This improves the sealing stability of the interface structure, thereby reducing or even eliminating the risk of hydraulic oil leakage and improving the operational reliability of the hydraulic pump.

[0061] It should be noted that the connection method between the connecting pipe 21 and the connecting groove 11 is not limited in the embodiments of this application, and those skilled in the art can make adjustments according to actual needs. In some optional embodiments of this application, such as Figure 3As shown, the connecting pipe 21 and the connecting groove 11 are threadedly connected. Specifically, the connecting pipe 21 includes a pipe wall 213, at least a portion of which is provided with a first thread 2131; the connecting groove 11 includes a side wall 112, at least a portion of which is provided with a second thread 1121, which engages with the first thread 2131. The first thread 2131 can be an internal thread, and the second thread 1121 can be an external thread.

[0062] In this embodiment of the application, the reliable connection between the connecting pipe 21 and the connecting groove 11 can be achieved by the mating connection of the first thread 2131 and the second thread 1121, so that the first sealing surface 1111 of the sealing recess 111 and the second sealing surface 2111 of the sealing protrusion 211 are tightly fitted, which is beneficial to further improve the sealing stability of the interface structure.

[0063] In some optional embodiments of this application, the first sealing surface 1111 and the second sealing surface 2111 are conical sealing surfaces. This has two advantages: firstly, the conical sealing surface is easier to manufacture, reducing manufacturing costs and improving manufacturing accuracy, thereby enhancing the sealing effect of the sealing recess 111 and the sealing protrusion 211, and improving the sealing stability of the interface structure. Secondly, when the connecting pipe 21 is connected to the connecting groove 11, such as when the connecting pipe 21 and the connecting groove 11 are threaded, the thread fit clearance can absorb tolerances, allowing zero axial fit of the conical sealing surface to be achieved, thus achieving an adaptive sealing effect, further improving the sealing stability of the interface structure.

[0064] In some optional embodiments of this application, the cone angle θ of the conical sealing surface is 100° to 140°. Tests have shown that when the cone angle θ of the conical sealing surface is 100° to 140°, not only can the self-adaptive sealing effect of the conical sealing surface be better, but the processing difficulty of the conical sealing surface can also be reduced to a certain extent, thus better balancing sealing effect and processing cost.

[0065] It should be noted that the specific value of the cone angle of the conical sealing surface is not limited in the embodiments of this application, and those skilled in the art can adjust it according to actual needs. For example, the cone angle θ of the conical sealing surface can be 100°, 110°, 120°, 135°, 140° or other values. Preferably, the cone angle θ of the conical sealing surface is 120°. It is understood that, without considering processing errors, the cone angle θ of the first sealing surface 1111 and the second sealing surface 2111 should be consistent. In this way, the first sealing surface 1111 and the second sealing surface 2111 can be tightly fitted to achieve effective surface sealing.

[0066] In some optional embodiments of this application, the first sealing surface 1111 and the second sealing surface 2111 are spherical sealing surfaces. Thus, the two spherical sealing surfaces, through their mutual cooperation, can reliably seal the sealing recess 111 and the sealing protrusion 211. Furthermore, because the spherical sealing surface has multi-directional compensation capabilities, it can automatically adjust the contact point according to the slight tilt or vibration of the connecting pipe 21, effectively avoiding the problem of reduced sealing stability due to assembly errors or dynamic loads.

[0067] In some alternative embodiments of this application, such as Figure 3 As shown, the hydraulic block 1 is provided with a first channel 12, which is connected to the sealing recess 111; the extension direction of the connecting pipe 21 is the first direction X, and the connecting pipe 21 is provided with a second channel 212 extending along the first direction X. When the connecting pipe 21 is connected to the connecting groove 11, the second channel 212 is connected to the first channel 12.

[0068] In this embodiment, the hydraulic block 1 is provided with a first channel 12, and the connecting pipe 21 is provided with a second channel 212. Thus, when the connecting pipe 21 is connected to the connecting groove 11, the sealing protrusion 211 is embedded in the sealing recess 111, and the second channel 212 communicates with the first channel 12, thereby enabling reliable delivery of hydraulic oil.

[0069] In some alternative embodiments of this application, such as Figure 4 and Figure 6 As shown, the connecting groove 11 includes a sidewall 112, and the first sealing surface 1111 includes a first edge 11111 near the center of the connecting groove 11, the first edge 11111 extending to the sidewall 112; and / or, the connecting pipe 21 includes a pipe wall 213, and the second sealing surface 2111 includes a third edge 21111 near the center of the connecting pipe 21, the third edge 21111 extending to the pipe wall 213.

[0070] In this embodiment, since the first edge 11111 of the first sealing surface 1111 extends to the side wall 112, no step surface is formed between the first edge 11111 and the side wall 112. This simplifies the structure of the connecting groove 11, reduces the processing difficulty of the connecting groove 11, and improves the processing accuracy of the connecting groove 11. Similarly, since the third edge 21111 of the second sealing surface 2111 extends to the pipe wall 213, no step surface is formed between the third edge 21111 and the pipe wall 213. This simplifies the structure of the connecting pipe 21, reduces the processing difficulty of the connecting pipe 21, and improves the processing accuracy of the connecting pipe 21. Furthermore, during the assembly of the connecting pipe 21 into the connecting groove 11, the problem of deterioration in the adaptive sealing effect of the first sealing surface 1111 and the second sealing surface 2111 due to the step surface abutting first can be avoided, thereby improving the sealing stability of the interface structure.

[0071] In some optional embodiments of this application, the connection between the first edge 11111 and the side wall 112, and / or the connection between the third edge 21111 and the pipe wall 213, are sharp-angled transitions. That is, the connection between the first edge 11111 and the side wall 112, and / or the connection between the third edge 21111 and the pipe wall 213, does not need to be rounded.

[0072] In this embodiment, since the connection between the first edge 11111 and the side wall 112, and the connection between the third edge 21111 and the pipe wall 213, are sharp-angled transitions, no rounding is required. This simplifies the structure of the connecting groove 11 and the connecting pipe 21. From a machining perspective, it simplifies the tool structure, reduces tool machining costs, and improves machining accuracy, resulting in higher precision and lower roughness for the machined connecting groove 11 and connecting pipe 21. This improves the sealing effect of the first sealing surface 1111 and the second sealing surface 2111, thereby enhancing the sealing stability of the interface structure. Furthermore, it increases the sealing area of ​​the first sealing surface 1111 and the second sealing surface 2111, further improving their sealing effect and enhancing the sealing stability of the interface structure.

[0073] In some alternative embodiments of this application, such as Figure 4 and Figure 6 As shown, the first channel 12 includes a first channel wall 121, and the first sealing surface 1111 includes a second edge 11112 away from the center of the connecting groove 11, the second edge 11112 extending to the first channel wall 121; and / or, the second channel 212 includes a second channel wall 2121, and the second sealing surface 2111 includes a fourth edge 21112 away from the center of the connecting tube 21, the fourth edge 21112 extending to the second channel wall 2121.

[0074] In this embodiment, since the second edge 11112 of the first sealing surface 1111 extends to the first channel wall 121, no step surface is formed between the second edge 11112 and the first channel wall 121. This simplifies the structure of the connecting groove 11, reduces the processing difficulty of the connecting groove 11, and improves the processing accuracy of the connecting groove 11. Similarly, since the fourth edge 21112 of the second sealing surface 2111 extends to the second channel wall 2121, no step surface is formed between the fourth edge 21112 and the second channel wall 2121. This simplifies the structure of the connecting pipe 21, reduces the processing difficulty of the connecting pipe 21, and improves the processing accuracy of the connecting pipe 21. Furthermore, during the assembly of the connecting pipe 21 into the connecting groove 11, the problem of deterioration in the adaptive sealing effect of the first sealing surface 1111 and the second sealing surface 2111 due to the step surface abutting first can be avoided, thereby improving the sealing stability of the interface structure.

[0075] In some optional embodiments of this application, the connection between the second edge 11112 and the first channel wall 121, and / or the connection between the fourth edge 21112 and the second channel wall 2121, is a sharp-angle transition. That is, the connection between the second edge 11112 and the first channel wall 121, and / or the connection between the fourth edge 21112 and the second channel wall 2121, does not need to be rounded.

[0076] In this embodiment, since the connection between the second edge 11112 and the first channel wall 121, and the connection between the fourth edge 21112 and the second channel wall 2121, are sharp-angled transitions, no rounding is required. This simplifies the structure of the connecting groove 11 and the connecting pipe 21. From a machining perspective, it simplifies the tool structure, reduces tool machining costs, and improves machining accuracy, resulting in higher precision and lower roughness for the machined connecting groove 11 and connecting pipe 21. This improves the sealing effect of the first sealing surface 1111 and the second sealing surface 2111, thereby enhancing the sealing stability of the interface structure. Furthermore, it increases the sealing area of ​​the first sealing surface 1111 and the second sealing surface 2111, further improving their sealing effect and enhancing the sealing stability of the interface structure.

[0077] In some optional embodiments of this application, the first channel 12 has a first axis O1, and the second channel 212 has a second axis O2, which coincides with the first axis O1.

[0078] In this embodiment, since the first axis O1 of the first channel 12 coincides with the second axis O2 of the second channel 212, from a processing perspective, when processing the first sealing surface 1111 with the first axis O1 as the reference and processing the second sealing surface 2111 with the second axis O2 as the reference, the problem of reference shift can be avoided. This improves the fitting accuracy of the processed first sealing surface 1111 and second sealing surface 2111, thereby improving the sealing effect of the first sealing surface 1111 and second sealing surface 2111 and further improving the sealing stability of the interface structure.

[0079] In some alternative embodiments of this application, the first channel 12 has a first cross-section perpendicular to the first direction X, and the second channel 212 has a second cross-section perpendicular to the first direction X, the second cross-section having the same size as the first cross-section.

[0080] In this embodiment, since the first cross-section of the first channel 12 and the second cross-section of the second channel 212 are the same, that is, there is no step difference between the first channel 12 and the second channel 212, the flow resistance of the hydraulic oil can be reduced, the flow rate of the hydraulic oil can be increased, and the working reliability of the hydraulic pump can be improved.

[0081] It should be noted that the embodiments of this application do not limit the shape and size of the first and second cross sections, and those skilled in the art can make adjustments according to actual needs. In one embodiment, both the first and second cross sections are circular with a diameter of 3.3 mm.

[0082] In some alternative embodiments of this application, such as Figures 7 to 8 As shown, the extension direction of the connecting pipe 21 is the first direction X. Multiple first sealing surfaces 1111 are provided, and the multiple first sealing surfaces 1111 are spaced apart in the first direction X. Multiple second sealing surfaces 2111 are provided, and the multiple second sealing surfaces 2111 are spaced apart in the first direction X. One second sealing surface 2111 abuts against one first sealing surface 1111.

[0083] In this embodiment, by providing multiple first sealing surfaces 1111 and multiple second sealing surfaces 2111, multi-level sealing can be achieved through the one-to-one correspondence between the multiple first sealing surfaces 1111 and multiple second sealing surfaces 2111, thereby improving the sealing effect of the sealing recess 111 and the sealing protrusion 211, and further improving the sealing stability of the interface structure.

[0084] It should be noted that, taking the first sealing surface 1111 and the second sealing surface 2111 as conical sealing surfaces as an example, the cone angles of multiple first sealing surfaces 1111 can be the same or different, and the cone angles of multiple second sealing surfaces 2111 can be the same or different. This is not limited here, and those skilled in the art can adjust them according to actual needs. It is understood that the cone angles of the corresponding first sealing surfaces 1111 and second sealing surfaces 2111 should remain the same. This ensures that the first sealing surfaces 1111 and second sealing surfaces 2111 fit tightly together, achieving effective surface sealing.

[0085] In some optional embodiments of this application, the sealing recess 111 further includes: at least one first transition sealing surface 1112 extending along the first direction X, the first transition sealing surface 1112 being disposed between and connected to two adjacent first sealing surfaces 1111; the sealing protrusion 211 further includes: at least one second transition sealing surface 2112 extending along the first direction X, the second transition sealing surface 2112 being disposed between and connected to two adjacent second sealing surfaces 2111; wherein, one first transition sealing surface 1112 abuts against one second transition sealing surface 2112.

[0086] In this embodiment, by providing a first transition sealing surface 1112 and a second transition sealing surface 2112, the sealing area of ​​the sealing recess 111 and the sealing protrusion 211 can be increased through the contact between the first transition sealing surface 1112 and the second transition sealing surface 2112, thereby improving the sealing effect of both and further enhancing the sealing stability of the interface structure. Since both the first transition sealing surface 1112 and the second transition sealing surface 2112 extend along the first direction X, during the assembly of the connecting pipe 21 into the connecting groove 11, the first transition sealing surface 1112 and the second transition sealing surface 2112 will not interfere with the adaptive sealing of the first sealing surface 1111 and the second sealing surface 2111, thereby improving the sealing stability of the interface structure.

[0087] It should be noted that the embodiments of this application do not limit the number of the first sealing surface 1111, the second sealing surface 2111, the first transition sealing surface 1112, and the second transition sealing surface 2112. Those skilled in the art can adjust them according to actual needs. In one embodiment, such as Figures 7 to 8 As shown, there are two first sealing surfaces 1111 and one first transition sealing surface 1112, with the first transition sealing surface 1112 positioned between the two first sealing surfaces 1111. Similarly, there are two second sealing surfaces 2111 and one second transition sealing surface 2112, with the second transition sealing surface 2112 positioned between the two second sealing surfaces 2111. Thus, through the contact between the first sealing surface 1111 and the corresponding second sealing surface 2111, and the contact between the first transition sealing surface 1112 and the second transition sealing surface 2112, a reliable seal between the sealing recess 111 and the sealing protrusion 211 can be achieved.

[0088] In summary, the interface structure provided in this application embodiment has at least the following advantages:

[0089] In this embodiment, the connecting groove has a sealing recess with a first sealing surface, and the connecting pipe has a sealing protrusion with a second sealing surface. Thus, when the connecting pipe is connected to the connecting groove, the sealing protrusion is embedded in the sealing recess. Through the contact between the second sealing surface and the first sealing surface, a surface seal between the connecting pipe and the connecting groove can be achieved, thereby improving the sealing stability of the interface structure, reducing the risk of hydraulic oil leakage, and improving the operational reliability of the hydraulic pump. Furthermore, placing the sealing recess in the connecting groove and the sealing protrusion in the connecting pipe simplifies the structure of the connecting groove and the connecting pipe, reducing processing difficulty. This not only reduces processing costs but also improves processing accuracy, enhancing the sealing effect of the first and second sealing surfaces. This further improves the sealing stability of the interface structure, reduces the risk of hydraulic oil leakage, and further improves the operational reliability of the hydraulic pump.

[0090] This application embodiment also provides a hydraulic pump including the aforementioned interface structure. Thus, during the delivery of hydraulic oil through the interface structure, the reliable sealing between the first sealing surface 1111 of the sealing recess 111 and the second sealing surface 2111 of the sealing protrusion 211 reduces the risk of hydraulic oil leakage and improves the operational reliability of the hydraulic pump.

[0091] It should be noted that in this embodiment, the interface structure is the same as that in any of the above embodiments, and its beneficial effects are similar, so it will not be described in detail here.

[0092] This application also provides a vehicle that includes the aforementioned interface structure or hydraulic pump. By providing the interface structure or hydraulic pump, the risk of hydraulic oil leakage can be reduced, thereby improving the vehicle's operational reliability.

[0093] It should be noted that in the embodiments of this application, the interface structure or the hydraulic pump structure is the same as the interface structure or the hydraulic pump structure of any of the above embodiments, and their beneficial effects are also similar, so they will not be described in detail here.

[0094] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0095] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An interface structure, characterized in that, include: Hydraulic blocks and hydraulic pipe fittings; The hydraulic block is provided with a connecting groove, the connecting groove includes a bottom wall, the bottom wall is provided with a sealing recess, and the sealing recess has a first sealing surface extending circumferentially thereon; The hydraulic pipe fitting includes a connecting pipe for connecting to the connecting groove, and the connecting pipe is provided with a sealing protrusion having a second sealing surface extending circumferentially thereon. When the connecting pipe is connected to the connecting groove, the sealing protrusion is embedded in the sealing recess and the second sealing surface abuts against the first sealing surface.

2. The interface structure according to claim 1, characterized in that, The first sealing surface and the second sealing surface are conical sealing surfaces.

3. The interface structure according to claim 2, characterized in that, The cone angle of the conical sealing surface is 100° to 140°.

4. The interface structure according to claim 1, characterized in that, The first sealing surface and the second sealing surface are spherical sealing surfaces.

5. The interface structure according to any one of claims 1-4, characterized in that, The hydraulic block is provided with a first channel, which communicates with the sealing recess. The connecting pipe extends in a first direction, and the connecting pipe is provided with a second channel extending in the first direction. When the connecting pipe is connected to the connecting groove, the second channel communicates with the first channel.

6. The interface structure according to claim 5, characterized in that, The connecting groove includes a sidewall, and the first sealing surface includes a first edge near the center of the connecting groove, the first edge extending to the sidewall; And / or, the connecting pipe includes a pipe wall, and the second sealing surface includes a third edge near the center of the connecting pipe, the third edge extending to the pipe wall.

7. The interface structure according to claim 6, characterized in that, The junction of the first edge and the sidewall, and / or the junction of the third edge and the pipe wall, are formed by a sharp angle transition.

8. The interface structure according to claim 5, characterized in that, The first channel includes a first channel wall, and the first sealing surface includes a second edge remote from the center of the connecting groove, the second edge extending to the first channel wall; And / or, the second channel includes a second channel wall, and the second sealing surface includes a fourth edge remote from the center of the connecting tube, the fourth edge extending to the second channel wall.

9. The interface structure according to claim 8, characterized in that, The junction of the second edge and the first channel wall, and / or the junction of the fourth edge and the second channel wall, are characterized by a sharp-angle transition.

10. The interface structure according to claim 5, characterized in that, The first channel has a first axis, and the second channel has a second axis, which coincides with the first axis.

11. The interface structure according to claim 10, characterized in that, The first channel has a first cross-section perpendicular to the first direction, and the second channel has a second cross-section perpendicular to the first direction, the second cross-section having the same dimensions as the first cross-section.

12. The interface structure according to any one of claims 1-4, characterized in that, The extension direction of the connecting pipe is a first direction, and multiple first sealing surfaces are provided, with the multiple first sealing surfaces spaced apart in the first direction; The second sealing surface is provided in multiple ways, and the multiple second sealing surfaces are spaced apart in the first direction, with one second sealing surface abutting against one first sealing surface.

13. The interface structure according to claim 12, characterized in that, The sealing recess further includes: at least one first transition sealing surface extending along the first direction, wherein the first transition sealing surface is disposed between two adjacent first sealing surfaces and is connected to the two adjacent first sealing surfaces; The sealing protrusion further includes: at least one second transition sealing surface extending along the first direction, wherein the second transition sealing surface is disposed between two adjacent second sealing surfaces and is connected to the two adjacent second sealing surfaces; In this process, one of the first transition sealing surfaces abuts against one of the second transition sealing surfaces.

14. The interface structure according to any one of claims 1-4, characterized in that, The connecting pipe includes a pipe wall, and at least a portion of the pipe wall is provided with a first thread; The connecting groove includes a sidewall, at least a portion of which is provided with a second thread, which engages with the first thread for connection.

15. The interface structure according to any one of claims 1-4, characterized in that, The hydraulic block is a structure formed by computer numerical control milling.

16. The interface structure according to any one of claims 1-4, characterized in that, The hydraulic pipe joint is a structure formed by computer numerical control grinding process.

17. A hydraulic pump, characterized in that, Includes the interface structure described in any one of claims 1-16.

18. A vehicle, characterized in that, Includes the interface structure described in any one of claims 1-16, or the hydraulic pump described in claim 17.

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