Hydraulic pipeline arrangement structure and hydraulic excavator

Abstract

The utility model belongs to the technical field of engineering machinery, and particularly relates to a hydraulic pipeline arrangement structure and a hydraulic excavator, the hydraulic pipeline arrangement structure comprises a first transition piece and a plurality of main valves arranged at intervals, the first transition piece is provided with a first input end interface group and a first output end interface group, and the main valves are connected with hydraulic pipelines; the hydraulic pipeline is connected with the first input end connector set, and the first output end connector set is used for being connected with a working device. The projections of the first transition piece and the multiple main valves in the horizontal plane define a hydraulic element installation area, and the projection of the hydraulic pipeline in the horizontal plane is located outside the hydraulic element installation area. In the application, the hydraulic pipeline is arranged outside the hydraulic element mounting area to avoid the influence of the hydraulic pipeline on the mounting of the hydraulic element, so that the assembly difficulty of the hydraulic element is reduced, and the assembly convenience of the whole product is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering machinery, and specifically relates to a hydraulic pipeline arrangement structure and a hydraulic excavator. Background Art

[0002] Hydraulic excavators are equipped with multiple main valves and hydraulic pipelines for hydraulic control. With the development of excavator technology, for hydraulic excavators with large tonnage and multiple functions, there are many main valves and hydraulic pipelines that need to work synchronously, which makes the layout of hydraulic pipelines more difficult.

[0003] In the prior art, part of the hydraulic pipeline passes through between the main valves to complete the arrangement. With respect to the above-mentioned related art, since the hydraulic pipeline is arranged between the main valves, the space between the main valves is relatively compact, which is not conducive to the installation and maintenance of other hydraulic components. Utility Model Content

[0004] The purpose of the present application is to provide a hydraulic pipeline arrangement structure and a hydraulic excavator, aiming to solve the technical problem in the prior art that the arrangement of the hydraulic pipeline affects the installation of other hydraulic components.

[0005] In order to achieve the above objectives, the present application provides a hydraulic pipeline arrangement structure, including:

[0006] a plurality of main valves arranged at intervals, the main valves being connected to hydraulic lines; and

[0007] A first transition piece, provided with a first input end interface group and a first output end interface group, the hydraulic pipeline is connected to the first input end interface group, and the first output end interface group is used to connect the working device;

[0008] The projections of the first transition piece and the plurality of main valves in the horizontal plane enclose a hydraulic component installation area, and the projection of the hydraulic pipeline in the horizontal plane is located outside the hydraulic component installation area.

[0009] In some embodiments, the projection of the hydraulic pipeline in the horizontal plane is distributed on the left and right sides of the hydraulic component installation area.

[0010] In some embodiments, the hydraulic pipeline is a flexible rubber pipe member.

[0011] In some embodiments, the first input port interface group includes a plurality of first input port interface layers arranged at intervals in the vertical direction, the hydraulic pipeline includes a plurality of branch pipe assemblies arranged in layers in the vertical direction, and the plurality of branch pipe assemblies are respectively connected to the plurality of first input port interface layers.

[0012] In some embodiments, each branch pipe assembly is provided with a fixing pipe clamp for fixing the branch pipe assembly.

[0013] In some embodiments, the hydraulic pipeline arrangement structure also includes a plurality of second transition pieces, the projections of the second transition pieces in the horizontal plane being located outside the hydraulic element installation area, the second transition pieces being provided with a second input port interface group and a second output port interface group and being connected in the hydraulic pipeline to change the pipeline direction of the hydraulic pipeline.

[0014] In some embodiments, the number of the main valves is three, namely a first main valve and two second main valves, the two second main valves are located in the same horizontal plane, and the first transition piece and the first main valve are located on both sides of the second main valve, respectively.

[0015] In some embodiments, the hydraulic pipeline includes a first branch pipe assembly, a second branch pipe assembly and a third branch pipe assembly, the first branch pipe assembly is connected to the first main valve, the second branch pipe assembly is connected to the oil port of the second main valve away from the first transition piece, and the third branch pipe assembly is connected to the oil port of the second main valve toward the first transition piece.

[0016] In some embodiments, a line connecting midpoints of projections of the first transition piece and the first main valve in a horizontal plane forms a central axis, and the two second main valves are symmetrically arranged with the central axis as a symmetry axis.

[0017] A second aspect of the present application provides a hydraulic excavator, comprising the hydraulic pipeline arrangement structure as described above.

[0018] Through the above technical solution, the hydraulic pipeline arrangement structure and hydraulic excavator provided by the present application have the following beneficial effects:

[0019] The hydraulic system of the hydraulic excavator includes a main hydraulic component and other hydraulic components. The main hydraulic component includes a first transition piece and a plurality of main valves. The first transition piece, the plurality of main valves and other hydraulic components are arranged in the body of the hydraulic excavator and are hydraulically connected through hydraulic pipelines. In the present application, by arranging other hydraulic components in the hydraulic component installation area and arranging the hydraulic pipeline outside the hydraulic component installation area, the hydraulic pipeline is prevented from affecting the installation of other hydraulic components, thereby reducing the difficulty of assembling other hydraulic components, thereby improving the convenience of assembling the entire product.

[0020] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of the hydraulic pipeline arrangement structure in an embodiment of the present application;

[0023] Figure 2 It is a structural schematic diagram of another perspective of the hydraulic pipeline arrangement structure in the embodiment of the present application;

[0024] Figure 3 is a cross-sectional schematic diagram of a first transition piece according to an embodiment of the present application;

[0025] Figure 4 is a schematic structural diagram of a second transition piece according to an embodiment of the present application;

[0026] Figure 5 It is a cross-sectional schematic diagram of the second transition piece in the embodiment of the present application.

[0027] Description of Reference Numerals

[0028] 1 Working device 2 First transition piece

[0029] 3 Main valve 31 First main valve

[0030] 32 Second main valve 4 Hydraulic pipeline

[0031] 41 First branch pipe assembly 42 Second branch pipe assembly

[0032] 43 Third branch pipe assembly 5 Second transition piece

[0033] 6 Hydraulic component installation area 61 Transition oil hole

[0034] 7 Other hydraulic components DETAILED DESCRIPTION

[0035] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0036] The hydraulic pipeline arrangement structure and the hydraulic excavator according to the present application will be described below with reference to the accompanying drawings.

[0037] like Figure 1 and Figure 2As shown, a specific embodiment of the present application provides a hydraulic pipeline arrangement structure, including a first transition piece 2 and a plurality of main valves 3 arranged at intervals, wherein the first transition piece 2 is provided with a first input end interface group and a first output end interface group, the main valve 3 is connected to a hydraulic pipeline 4, the hydraulic pipeline 4 is connected to the first input end interface group, and the first output end interface group is used to connect to a working device 1;

[0038] The projections of the first transition piece 2 and the plurality of main valves 3 in the horizontal plane enclose a hydraulic component installation area 6 , and the projection of the hydraulic pipeline 4 in the horizontal plane is located outside the hydraulic component installation area 6 .

[0039] Specifically, the first transition piece 2 and multiple main valves 3 are main hydraulic components. After the main hydraulic components are installed and arranged, other hydraulic components 7 need to be installed. Since the first transition piece 2 and multiple main valves 3 need to be equipped with hydraulic pipelines 4 to achieve hydraulic connectivity, and some other hydraulic components 7 need to be installed in the hydraulic component installation area 6, therefore, in the present application, the installation of other hydraulic components 7 is facilitated by arranging the hydraulic pipelines 4 outside the hydraulic component installation area 6, thereby reducing the difficulty of assembling other hydraulic components 7 and thereby improving the convenience of assembly of the entire product.

[0040] It should be noted that the "front", "rear", "left", "right", "up" and "down" mentioned in the specific examples of the present application generally refer to the various directions of the hydraulic excavator under normal conditions, among which the vertical direction is the up and down direction; "outside" refers to the direction away from the center of the hydraulic element installation area 6; and "inside" refers to the direction toward the center of the hydraulic element area.

[0041] In some embodiments, the first transition piece 2 is located in front of the plurality of main valves 3 , the working device 1 is located in front of the first transition piece 2 , and the projection of the hydraulic pipeline 4 in the horizontal plane is distributed on the left and right sides of the hydraulic element installation area 6 .

[0042] Specifically, the hydraulic component installation area 6 is open in the up and down directions, which not only facilitates the installation of other hydraulic components 7, but also reserves maintenance space between multiple main valves 3, so that operators do not need to remove the hydraulic pipeline 4 when performing after-sales maintenance, thereby reducing the difficulty of after-sales maintenance.

[0043] Preferably, the hydraulic pipeline 4 includes a plurality of branch pipe assemblies arranged in layers along the vertical direction, and the plurality of branch pipe assemblies arranged in layers are used to avoid mutual interference between the branch pipe assemblies, thereby reducing the difficulty of disassembly and assembly for easy repair and maintenance, while increasing the rationality and aesthetics of the hydraulic pipeline layout structure.

[0044] Furthermore, the first input port interface group includes a plurality of first input port interface layers arranged at intervals along the vertical direction, and the first output port interface group includes a plurality of first output port interface layers arranged at intervals along the vertical direction. The plurality of first input port interface layers are connected to the plurality of first output port interface layers in a one-to-one correspondence, and the plurality of branch pipe assemblies arranged in layers are connected through the plurality of first input port interface layers, thereby realizing the aggregation of the plurality of branch pipe assemblies, thereby facilitating the connection between the hydraulic pipeline 4 and the working device 1 and improving the aesthetics.

[0045] In some embodiments, each first input interface layer includes a plurality of first input interfaces, each first output interface layer includes a plurality of first output interfaces, and the plurality of first input interfaces and the plurality of first output interfaces are connected one by one. Each branch pipe assembly includes a plurality of hydraulic branch pipes, and the plurality of hydraulic branch pipes are connected to each other by setting a fixed pipe clamp, so as to realize the collection of the hydraulic branch pipes, thereby avoiding interference between the hydraulic branch pipes, and avoiding the disordered arrangement of the hydraulic branch pipes from affecting the installation of the hydraulic components.

[0046] Specifically, the fixed pipe clamp includes a suspended placement state and a connected and fixed state. The suspended placement state refers to the fixed pipe clamp directly clamping and connecting multiple hydraulic branch pipes without being connected to other structural parts. The connected and fixed state refers to the fixed pipe clamp clamping and connecting multiple hydraulic branch pipes and then connecting to other structural parts. During the actual installation process, operators can use the two different states to reasonably use the fixed pipe clamp, thereby further improving the rationality and aesthetics of the hydraulic pipeline layout structure.

[0047] Furthermore, a plurality of fixed pipe clamps can be arranged at intervals along the pipeline, thereby realizing the collection of multiple relatively long hydraulic branch pipes.

[0048] In some embodiments, the hydraulic pipeline arrangement structure further includes a plurality of second transition pieces 5, the projection of the second transition pieces 5 in the horizontal plane is located outside the hydraulic element installation area 6, and the second transition pieces 5 are provided with a second input port interface group and a second output port interface group and connected to the hydraulic pipeline 4 to change the pipeline direction of the hydraulic pipeline 4. By providing a plurality of second transition pieces 5 to change the pipeline direction of the hydraulic pipeline 4, the pipeline direction of the hydraulic pipeline 4 is replanned according to actual conditions, thereby improving the rationality and aesthetics of the hydraulic pipeline arrangement structure.

[0049] It should be noted that the structures of the first transition piece 2 and the second transition piece 5 for changing the route of the hydraulic pipeline 4 are well known to those skilled in the art, and do not belong to the core improvement part of the present application, so they will not be elaborated here.

[0050] In some embodiments, the hydraulic pipeline 4 is a flexible rubber pipe component. In the prior art, a rigid hard pipe component is generally used as the hydraulic pipeline 4. Since the interior of the hydraulic pipeline 4 is generally in a high pressure state and is often accompanied by vibration of the hydraulic excavator, the failure rate is relatively high. By using a flexible rubber pipe component with deformation ability to replace the rigid hard pipe component, the failure rate of the hydraulic pipeline 4 is effectively reduced.

[0051] Furthermore, since the rigid hard pipe components are fixed in shape and cannot be moved at will, it is inconvenient for operators to operate and disassemble them during after-sales maintenance. By adopting flexible rubber pipe components that have deformation ability and can move within a certain range as the hydraulic pipeline 4, it is convenient for operators to perform after-sales maintenance, and at the same time it is more convenient to arrange the hydraulic pipeline 4 to improve the rationality and aesthetics of the hydraulic pipeline arrangement structure.

[0052] It should be noted that those skilled in the art can understand that, in addition to the above-mentioned disadvantages, the embodiment of the present application using a rigid hard pipe component in combination with a plurality of second transition components 5 to achieve the change of the pipeline direction to facilitate the arrangement of other hydraulic components 7 should also fall within the scope of protection of the present application.

[0053] In the first embodiment of the present application, the number of main valves 3 is three, namely a first main valve 31 and two second main valves 32. The two second main valves 32 are located on the same straight line, the first transition piece 2 is located on the front side of the second main valve 32, and the first main valve 31 is located on the rear side of the second main valve 32.

[0054] Preferably, a line connecting the midpoints of the projections of the first transition piece 2 and the first main valve 31 in the horizontal plane forms a central axis, the two second main valves 32 are symmetrically arranged with the central axis as the axis of symmetry, the hydraulic element installation area 6 has the central axis as the center line, and the hydraulic pipeline 4 is symmetrically arranged with the central axis as the axis of symmetry, thereby improving the aesthetics and rationality of the hydraulic pipeline layout structure.

[0055] Specifically, the hydraulic pipeline 4 includes a first branch pipe assembly 41, a second branch pipe assembly 42 and a third branch pipe assembly 43. The first branch pipe assembly 41 is connected to the first main valve 31, the second branch pipe assembly 42 is connected to the oil port of the second main valve 32 away from the first transition piece 2, and the third branch pipe assembly 43 is connected to the oil port of the second main valve 32 toward the first transition piece 2.

[0056] Furthermore, the second branch pipe assembly 42 and the third branch pipe assembly 43 are arranged in layers along the vertical direction and are respectively connected to the first input end interface groups located at different layers; the first branch pipe assembly 41 and the second branch pipe assembly 42 are connected to the same first input end interface group, thereby completing the layout position division of each branch pipe assembly, thereby improving the aesthetics and rationality of the hydraulic pipeline layout structure.

[0057] Preferably, the hydraulic pipeline 4 further includes two second transition pieces 5 , and the first branch pipe assembly 41 and the second branch pipe assembly 42 change the pipeline directions through the second transition piece 5 to be connected to the first transition piece 2 .

[0058] Furthermore, the two second transition pieces 5 are symmetrically arranged with the central axis as the symmetry axis, thereby improving the aesthetics and rationality of the hydraulic pipeline arrangement structure.

[0059] It should be noted that in other embodiments of the present application, the number of main valves 3, the number of branch pipe assemblies and the number of second transition pieces 5 may be changed and should fall within the protection scope of the present application.

[0060] like Figures 3 to 5 As shown, the specific structure of the first transition piece 2 and the second transition piece 5 is to open a transition oil hole 61 on the structural member, and the two ends of the transition oil hole 61 are respectively the first input end interface and the first output end interface. Those skilled in the art can understand that the number, arrangement and direction of the transition oil holes 61 are not limited, and should all belong to the protection scope of this application.

[0061] Preferably, a transition oil hole 61 is provided on each structural member, and the operator connects a corresponding number of structural members in the horizontal direction according to the number of hydraulic branches included in each branch assembly, and connects multiple structural members in the vertical direction according to the number of layers of the branch assembly included in the hydraulic pipeline 4, so as to obtain a suitable transition member, thereby increasing the scope of applicability.

[0062] The second aspect of the present application provides a hydraulic excavator, comprising a hydraulic pipeline arrangement structure. Since the hydraulic excavator adopts all embodiments of the hydraulic pipeline arrangement structure, the hydraulic excavator has all the beneficial effects brought by the hydraulic pipeline arrangement structure.

[0063] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0066] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A hydraulic pipeline arrangement structure, characterized in that: include: A plurality of main valves (3) arranged at intervals, wherein the main valves (3) are connected to a hydraulic pipeline (4); and A first transition piece (2) is provided with a first input end interface group and a first output end interface group, the hydraulic pipeline (4) is connected to the first input end interface group, and the first output end interface group is used to connect to the working device (1); The projections of the first transition piece (2) and the plurality of main valves (3) in a horizontal plane enclose a hydraulic component installation area (6), and the projection of the hydraulic pipeline (4) in the horizontal plane is located outside the hydraulic component installation area (6).

2. The hydraulic pipeline arrangement structure according to claim 1, characterized in that: The projection of the hydraulic pipeline (4) in the horizontal plane is distributed on the left and right sides of the hydraulic component installation area (6).

3. The hydraulic pipeline arrangement structure according to claim 1, characterized in that: The hydraulic pipeline (4) is a flexible rubber pipe component.

4. The hydraulic pipeline arrangement structure according to claim 1, characterized in that: The first input end interface group comprises a plurality of first input end interface layers arranged at intervals in the vertical direction, the hydraulic pipeline (4) comprises a plurality of branch pipe assemblies arranged in layers in the vertical direction, and the plurality of branch pipe assemblies are respectively connected to the plurality of first input end interface layers.

5. The hydraulic pipeline arrangement structure according to claim 4, characterized in that: Each branch pipe assembly is provided with a fixed pipe clamp for fixing the branch pipe assembly.

6. The hydraulic pipeline arrangement structure according to claim 1, characterized in that: The hydraulic pipeline arrangement structure also includes a plurality of second transition pieces (5), the projection of the second transition pieces (5) in the horizontal plane being located outside the hydraulic element installation area (6), the second transition pieces (5) being provided with a second input end interface group and a second output end interface group and being connected to the hydraulic pipeline (4) so ​​as to change the pipeline direction of the hydraulic pipeline (4).

7. The hydraulic pipeline arrangement structure according to claim 4, characterized in that: The number of the main valves (3) is three, namely a first main valve (31) and two second main valves (32); the two second main valves (32) are located in the same horizontal plane; the first transition piece (2) and the first main valve (31) are respectively located on both sides of the second main valve (32).

8. The hydraulic pipeline arrangement structure according to claim 7, characterized in that: The hydraulic pipeline (4) comprises a first branch pipe assembly (41), a second branch pipe assembly (42) and a third branch pipe assembly (43); the first branch pipe assembly (41) is connected to the first main valve (31); the second branch pipe assembly (42) is connected to the oil port of the second main valve (32) away from the first transition piece (2); and the third branch pipe assembly (43) is connected to the oil port of the second main valve (32) toward the first transition piece (2).

9. The hydraulic pipeline arrangement structure according to claim 7, characterized in that: A line connecting the midpoints of the projections of the first transition piece (2) and the first main valve (31) in a horizontal plane forms a central axis, and the two second main valves (32) are symmetrically arranged with the central axis as a symmetry axis.

10. A hydraulic excavator, characterized in that: It comprises a hydraulic pipeline arrangement structure according to any one of claims 1 to 9.

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