Hydraulic assembly and vehicle

Abstract

The utility model provides a hydraulic assembly and a vehicle, and belongs to the technical field of hydraulic systems, the hydraulic assembly comprises a hydraulic oil tank, a filter assembly and a lifting assembly, the hydraulic oil tank is provided with a mounting hole, and the outer wall of the hydraulic oil tank is provided with a wire harness support; the filter assembly is inserted into the mounting hole and comprises an oil return box and a filter cartridge arranged in the oil return box, the oil return box comprises a box body and an oil return flange covering the top of the box body, and the peripheral surface of the box body is provided with a limiting flange erected on the top of the hydraulic oil tank; the lifting assembly comprises a lifting seat arranged on the oil return flange and a lifting valve arranged on the lifting seat, an oil return channel is formed in the lifting seat, a flow guide channel communicated with the oil return channel is formed in the lifting valve, and the flow guide channel is used for being communicated with a lifting oil way; the oil return channel further communicates with the oil return box and the steering oil way. According to the hydraulic assembly and the vehicle provided by the utility model, the problems that the mounting is loose and the circuit layout is tedious due to the fact that the lifting valve is not firmly mounted and the mounting structure is complicated are easily caused.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic system technology, and more specifically, relates to a hydraulic assembly and a vehicle. Background Technology

[0002] Hydraulic excavators, loaders, dump trucks and other construction machinery consist of a lower traveling device, an upper slewing device, and a working device connected to the slewing device. Each part is driven by hydraulic pressure, so a hydraulic circuit with a hydraulic oil tank is configured to provide power to the whole machine.

[0003] During the lifting process of dump trucks, a lifting valve is generally required. The lifting valve is typically bolted to the hydraulic tank. However, after installation, the distance between the lifting valve and the hydraulic system is relatively long, resulting in a prolonged hydraulic oil return path and increased intermediate connecting pipes, making the lifting valve prone to loosening. Alternatively, the lifting valve can be installed between the truck bed support and the hydraulic lines to ensure safe and reliable control of the truck bed's raising and lowering. However, this method involves multiple connecting parts between the lifting valve and the hydraulic tank, making the entire system larger and resulting in a more complex piping layout. Utility Model Content

[0004] The purpose of this utility model is to provide a hydraulic assembly and vehicle, which aims to solve the problems in the prior art where the lifting valve is not installed securely enough, the installation structure is complex, and it is easy to cause loose installation and complicated wiring layout.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, a hydraulic assembly is provided, comprising:

[0007] The hydraulic oil tank has mounting holes, and the outer wall of the hydraulic oil tank is provided with a wire harness bracket.

[0008] A filter assembly is inserted into the mounting hole. The filter assembly includes a return oil box and a filter cartridge disposed within the return oil box. The return oil box includes a box body and a return oil flange covering the top of the box body. The outer circumferential surface of the box body has a limiting flange that overlaps the top of the hydraulic oil tank.

[0009] The lifting assembly includes a lifting seat disposed on the return flange and a lifting valve disposed on the lifting seat. The lifting seat has a return oil passage, and the lifting valve has a guide channel connected to the return oil passage. The guide channel is used to communicate with the lifting oil circuit. The return oil passage is also connected to the return oil box and the steering oil circuit.

[0010] In conjunction with the first aspect, in one possible implementation, the hydraulic tank comprises:

[0011] The housing has the aforementioned mounting hole at the top and an oil outlet and an oil suction hole at the bottom. The oil suction hole is used to connect with an oil suction pipeline, and a switch valve is provided on the oil outlet.

[0012] A breathing valve, located at the top of the housing and connected to the inner cavity of the housing, is used to regulate the pressure inside the housing; and

[0013] The mounting base is located at the bottom of the box and is used to fix the box.

[0014] In conjunction with the first aspect, in one possible implementation, the mounting base includes:

[0015] A connecting plate, connected to the housing, the connecting plate having a fixing portion extending away from the housing, the fixing portion having a fixing hole; and

[0016] Reinforcing plates are respectively connected to the fixing part and the housing.

[0017] In conjunction with the first aspect, in one possible implementation, the hydraulic oil tank further includes a connecting flange located at the bottom of the tank body, the connecting flange having a clearance hole corresponding to the oil suction hole, and the connecting flange having multiple connecting holes along the circumferential direction.

[0018] In conjunction with the first aspect, in one possible implementation, the hydraulic oil tank further includes a fixed flange disposed on the tank body, the fixed flange covering the mounting hole, and the fixed flange having a clearance hole corresponding to the mounting hole, and the limiting flange being attached to the fixed flange.

[0019] In conjunction with the first aspect, in one possible implementation, the fixed flange includes a plug portion inserted into the mounting hole and a fixing portion mounted on the top of the housing, the clearance hole passing through the plug portion and the fixing portion, and the limiting flange mounted on the fixing portion.

[0020] In conjunction with the first aspect, in one possible implementation, the fixed flange has a plurality of first mounting holes along the circumferential direction, and the limiting flange has a plurality of second mounting holes corresponding one-to-one with the first mounting holes, and locking elements are inserted into the first mounting holes and the second mounting holes.

[0021] In conjunction with the first aspect, in one possible implementation, the hydraulic assembly further includes a level detector and an alarm disposed on a hydraulic oil tank, and a controller communicatively connected to the level detector and the alarm respectively, the alarm being used to emit an audible or visual alarm.

[0022] In conjunction with the first aspect, in one possible implementation, the hydraulic tank is also provided with lifting lugs.

[0023] The beneficial effects of the hydraulic assembly provided by this utility model are as follows: Compared with the prior art, the hydraulic assembly of this utility model integrates the lifting component onto the return flange on the top of the hydraulic oil tank. It utilizes the return channel within the lifting seat to return the hydraulic oil from the steering and lifting circuits to the return box, making the entire hydraulic assembly more compact, reducing pipeline layout, and achieving a rational layout of the hydraulic system. The limiting flange of the return box overlaps with the hydraulic oil tank, not only limiting the return box but also increasing the stability and reliability of the connection between the return box and the hydraulic oil tank. Furthermore, the wiring harness bracket installed outside the hydraulic oil tank can fix the wiring harness of the entire hydraulic assembly, preventing the harness from becoming tangled and causing maintenance inconvenience, while also reducing the space occupied by the wiring harness. This utility model shortens the connection distance between the lifting component and the hydraulic oil tank, reduces intermediate connecting pipelines, shortens the hydraulic oil return path, simplifies the installation structure, improves the robustness and reliability of the lifting valve installation, and avoids the problem of cumbersome pipeline layout caused by redundant wiring harnesses and pipelines.

[0024] Secondly, this utility model embodiment also provides a vehicle including the hydraulic assembly described above.

[0025] The beneficial effects of the vehicle provided by this utility model are as follows: compared with the prior art, it adopts the above-mentioned hydraulic assembly, which has similar technical effects to the above-mentioned hydraulic assembly, and will not be described in detail here. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the hydraulic assembly provided in an embodiment of the present utility model;

[0028] Figure 2 A cross-sectional view of the hydraulic assembly provided in an embodiment of this utility model;

[0029] Figure 3 A partial cross-sectional view of the hydraulic assembly provided in an embodiment of this utility model;

[0030] Figure 4 This is a schematic diagram of the lifting assembly used in an embodiment of the present invention.

[0031] In the diagram: 1. Hydraulic oil tank; 101. Tank body; 102. Fixed flange; 103. Wiring harness bracket; 104. Breather valve; 105. Mounting base; 1051. Connecting plate; 1052. Reinforcing plate; 1053. Fixing hole; 106. Connecting flange; 107. Switch valve; 2. Filter assembly; 201. Return oil box; 2011. Return oil flange; 2012. Box body; 2013. Limit flange; 202. Filter cartridge; 3. Lifting assembly; 301. Lifting seat; 3011. Return oil channel; 302. Lifting valve; 4. Oil baffle; 5. Liquid level detector; 6. Lifting lug. Detailed Implementation

[0032] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] In the claims, description, and accompanying drawings of this utility model, unless otherwise expressly defined, the terms "first," "second," or "third," etc., are used to distinguish different objects, not to describe a specific order. Unless otherwise stated, other directional terms, such as "vertical," "clockwise," and "counterclockwise," indicate orientation or positional relationships based on the orientation and positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, not to indicate or imply that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this utility model. In the claims, description, and accompanying drawings of this utility model, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be interpreted broadly, that is, any connection method in which there is no displacement relationship or relative rotation relationship between the two, that is, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection through other devices or elements. In the claims, description, and accompanying drawings of this utility model, the terms "comprising," "having," and their variations are intended to mean "including but not limited to."

[0034] Please refer to the following: Figures 1 to 4The hydraulic assembly and vehicle provided by this utility model will now be described. The hydraulic assembly includes a hydraulic oil tank 1, a filter assembly 2, and a lifting assembly 3. The hydraulic oil tank 1 has a mounting hole, and a wiring harness bracket 103 is provided on the outer wall of the hydraulic oil tank 1. The filter assembly 2 is inserted into the mounting hole and includes a return oil box 201 and a filter cylinder 202 disposed within the return oil box 201. The return oil box 201 includes a box body 2012 and a return oil flange 2011 covering the top of the box body 2012. The outer peripheral surface of the box body 2012 has… A limiting flange 2013 is mounted on top of the hydraulic oil tank 1; the lifting assembly 3 includes a lifting seat 301 mounted on the return flange 2011 and a lifting valve 302 mounted on the lifting seat 301. The lifting seat 301 has a return oil passage 3011, and the lifting valve 302 has a guide passage connected to the return oil passage 3011. The guide passage is used to connect with the lifting oil circuit. The return oil passage 3011 is also connected to the return oil box 201 and the steering oil circuit.

[0035] Compared with the prior art, the hydraulic assembly provided by this utility model integrates the lifting component 3 onto the return flange 2011 on the top of the hydraulic oil tank 1. The return channel 3011 within the lifting seat 301 returns the hydraulic oil from the steering and lifting circuits to the return box 201, making the entire hydraulic assembly more compact, reducing the number of pipes, and achieving a more rational layout of the hydraulic system. The limiting flange 2013 of the return box 201 overlaps with the hydraulic oil tank 1, not only limiting the position of the return box 201 but also increasing the stability and reliability of the connection between the return box 201 and the hydraulic oil tank 1. Furthermore, the wiring harness bracket 103 installed outside the hydraulic oil tank 1 can fix the wiring harness of the entire hydraulic assembly, preventing the wiring harness from becoming tangled and causing maintenance inconvenience, while also reducing the space occupied by the wiring harness. This invention shortens the connection distance between the lifting assembly 3 and the hydraulic oil tank 1, reduces intermediate connecting pipelines, shortens the return path of the hydraulic oil, simplifies the installation structure, improves the firmness and reliability of the lifting valve 302 installation, and avoids the problem of complicated pipeline layout caused by redundant wiring harnesses and pipelines.

[0036] Optionally, the filter assembly 2 can be welded to or detachably connected to the hydraulic oil tank 1. For example, the return oil box 201 has external threads, the mounting hole has internal threads adapted to an external nut, and the hydraulic oil tank 1 is screwed to the return oil box 201.

[0037] Optionally, the return flange 2011 has an opening corresponding to the return channel 3011, thereby connecting the return box 201 to the return channel 3011. The hydraulic assembly also includes an oil baffle 4 connected to the return flange 2011. The oil baffle 4 is positioned below the opening of the return flange 2011 and is spaced vertically from the opening of the return flange 2011. The hydraulic oil returning to the return box 201 impacts the oil baffle 4, which blocks and diverts the hydraulic oil flowing back to the hydraulic box, preventing the return oil from directly impacting a certain area of ​​the return box 201 or the filter cartridge 202, thus avoiding the problems of large fluctuations and high local temperatures in the hydraulic oil within the filter assembly 2.

[0038] In some embodiments, please refer to Figures 1 to 3 The hydraulic oil tank 1 includes a tank body 101, a breather valve 104, and a mounting base 105. The tank body 101 has a mounting hole at the top and an oil outlet and an oil suction hole at the bottom. The oil suction hole is used to communicate with the oil suction pipeline, and the oil outlet is equipped with a switch valve 107. The breather valve 104 is located at the top of the tank body 101 and is connected to the inner cavity of the tank body 101. The breather valve 104 is used to regulate the pressure inside the tank body 101. The mounting base 105 is located at the bottom of the tank body 101 and is used to fix the tank body 101.

[0039] The breather valve 104 not only balances the internal and external air pressure of the hydraulic oil tank 1, but also filters impurities in the air, ensuring that the hydraulic oil is not contaminated by impurities. The switch valve 107 controls the opening and closing of the oil outlet; when the tank 101 is under maintenance or being cleaned, the switch valve 107 is opened to drain the hydraulic oil from the tank. An oil suction pipe is inserted into the oil suction hole, thereby returning the hydraulic oil in the tank 101 to the hydraulic pipeline. In this embodiment, the mounting base 105 is used to fix the tank 101 to the vehicle body, avoiding drilling or welding on the tank 101 and ensuring the sealing performance of the oil tank.

[0040] In some embodiments, please refer to Figures 1 to 2 The mounting base 105 includes a connecting plate 1051 and a reinforcing plate 1052. The connecting plate 1051 is connected to the housing 101. The connecting plate 1051 has a fixing part extending away from the housing 101, and the fixing part has a fixing hole 1053. The reinforcing plate 1052 is connected to the fixing part and the housing 101 respectively.

[0041] The fixing hole 1053 is adapted to the hole on the mounting surface. Bolts are inserted into the fixing hole 1053 and the hole on the mounting surface to fix the connecting plate 1051. The reinforcing plate 1052 can increase the strength of the connecting plate 1051 on the one hand, and increase the reliability and firmness of the connection between the connecting plate 1051 and the housing 101 on the other hand.

[0042] Optionally, the connecting plate 1051 is welded to the housing 101.

[0043] Optionally, multiple reinforcing plates 1052 are provided, with adjacent reinforcing plates 1052 spaced apart, so that the connecting plate 1051 is subjected to uniform force at all points.

[0044] In some embodiments, please refer to Figure 2 The hydraulic oil tank 1 also includes a connecting flange 106 located at the bottom of the tank body 101. The connecting flange 106 has a clearance hole corresponding to the oil suction hole, and the connecting flange 106 has multiple connecting holes along the circumference.

[0045] The connecting flange 106 increases the strength of the housing 101 in the area surrounding the oil suction port, preventing deformation or damage to this area caused by the oil suction port. It also increases the contact area with the oil suction pipe, improving connection reliability. The connecting flange 106 has a connecting hole for a fixed connection to the oil suction pipe, preventing a reduction in the sealing performance of the housing 101 due to openings in the housing 101.

[0046] In some embodiments, please refer to Figures 1 to 3 The hydraulic oil tank 1 also includes a fixed flange 102 disposed on the tank body 101. The fixed flange 102 covers the mounting hole and has a clearance hole corresponding to the mounting hole. The limiting flange 2013 is mounted on the fixed flange 102.

[0047] A fixed flange 102 is provided on the housing 101 to increase the strength of the housing 101 in the area around the clearance hole and improve the deformation resistance at the connection between the hydraulic oil tank 11 and the filter assembly 2. The fixed flange 102 overlaps with the limiting flange 2013, and the limiting flange 2013 is fixed to the fixed flange 102, avoiding the problem of reduced sealing performance of the housing 101 caused by screwing or welding.

[0048] In some embodiments, please refer to Figures 2 to 3 The fixed flange 102 includes a plug-in part inserted into the mounting hole and a fixing part mounted on the top of the housing 101. A clearance hole passes through the plug-in part and the fixing part, and a limiting flange 2013 is mounted on the fixing part.

[0049] Because the insertion part of the fixed flange 102 is inserted into the mounting hole, the connection stability and sealing effect between the fixed flange 102 and the housing 101 are increased. The fixing part is mounted on the top of the housing 101 and overlaps with the limiting flange 2013 of the filter assembly 2, which increases the reliability of the connection.

[0050] In some embodiments, please refer to Figure 1 The fixed flange 102 has multiple first mounting holes along its circumference, and the limiting flange 2013 has multiple second mounting holes that correspond one-to-one with the first mounting holes. Locking elements are inserted into the first mounting holes and the second mounting holes.

[0051] The locking element is inserted into the first fixing hole 1053 and the second fixing hole 1053 to realize the detachable connection between the fixing flange 102 and the limiting flange 2013, thereby making the return oil box 201 separate from the hydraulic box 101, which facilitates the subsequent maintenance and cleaning of the return oil box 201.

[0052] Optionally, the locking element can be a bolt or a snap-fit ​​component.

[0053] In some embodiments, please refer to Figures 1 to 2 The hydraulic assembly also includes a level detector 5 and an alarm located on the hydraulic oil tank 1, as well as a controller that is communicatively connected to the level detector 5 and the alarm respectively. The alarm is used to emit sound or light waves as an alarm.

[0054] The level detector 5 is used to detect the level of the hydraulic oil in the hydraulic oil tank 1. When the level detector 5 detects that the level of the hydraulic oil in the hydraulic oil tank 1 is higher than the first preset value or lower than the second preset value, an alarm signal is generated. The controller controls the alarm to emit a sound or light alarm according to the alarm signal, prompting the operator to check the hydraulic assembly.

[0055] In some embodiments, please refer to Figures 1 to 2 The hydraulic oil tank 1 is also equipped with lifting lugs 6.

[0056] Lifting lugs 6 are installed on the hydraulic oil tank 1 to facilitate the installation or disassembly of the hydraulic oil tank 1, which is beneficial for subsequent maintenance operations.

[0057] Based on the same inventive concept, this utility model also provides a vehicle. The vehicle includes the aforementioned hydraulic assembly.

[0058] The vehicle provided by this utility model adopts the aforementioned hydraulic assembly, integrating the lifting component 3 onto the return flange 2011 on top of the hydraulic oil tank 1. The hydraulic oil in the steering and lifting circuits is returned to the return box 201 via the return channel 3011 within the lifting seat 301, making the entire hydraulic assembly more compact, reducing pipeline layout, and achieving a rational hydraulic system layout. The limiting flange 2013 of the return box 201 overlaps with the hydraulic oil tank 1, not only limiting the position of the return box 201 but also increasing the stability and reliability of the connection between the return box 201 and the hydraulic oil tank 1. Furthermore, the wiring harness bracket 103 installed outside the hydraulic oil tank 1 can fix the wiring harness of the entire hydraulic assembly, preventing the wiring harness from becoming tangled and causing maintenance inconvenience, while also reducing the space occupied by the wiring harness. This invention shortens the connection distance between the lifting assembly 3 and the hydraulic oil tank 1, reduces intermediate connecting pipelines, shortens the return path of the hydraulic oil, simplifies the installation structure, improves the firmness and reliability of the lifting valve 302 installation, and avoids the problem of complicated pipeline layout caused by redundant wiring harnesses and pipelines.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic assembly, characterized in that, include: The hydraulic oil tank has mounting holes, and the outer wall of the hydraulic oil tank is provided with a wire harness bracket. A filter assembly is inserted into the mounting hole. The filter assembly includes a return oil box and a filter cartridge disposed within the return oil box. The return oil box includes a box body and a return oil flange covering the top of the box body. The outer circumferential surface of the box body has a limiting flange that overlaps the top of the hydraulic oil tank. The lifting assembly includes a lifting seat disposed on the return flange and a lifting valve disposed on the lifting seat. The lifting seat has a return oil passage, and the lifting valve has a guide channel connected to the return oil passage. The guide channel is used to communicate with the lifting oil circuit. The return oil passage is also connected to the return oil box and the steering oil circuit.

2. The hydraulic assembly as described in claim 1, characterized in that, The hydraulic oil tank includes: The housing has the aforementioned mounting hole at the top and an oil outlet and an oil suction hole at the bottom. The oil suction hole is used to connect with an oil suction pipeline, and a switch valve is provided on the oil outlet. A breathing valve, located at the top of the housing and connected to the inner cavity of the housing, is used to regulate the pressure inside the housing; and The mounting base is located at the bottom of the box and is used to fix the box.

3. The hydraulic assembly as described in claim 2, characterized in that, The mounting base includes: A connecting plate, connected to the housing, the connecting plate having a fixing portion extending away from the housing, the fixing portion having a fixing hole; and Reinforcing plates are respectively connected to the fixing part and the housing.

4. The hydraulic assembly as described in claim 2, characterized in that, The hydraulic oil tank also includes a connecting flange located at the bottom of the tank body. The connecting flange has a clearance hole corresponding to the oil suction hole, and the connecting flange has multiple connecting holes along the circumference.

5. The hydraulic assembly as described in claim 2, characterized in that, The hydraulic oil tank also includes a fixed flange disposed on the tank body, the fixed flange covering the mounting hole, and the fixed flange having a clearance hole corresponding to the mounting hole, and the limiting flange being attached to the fixed flange.

6. The hydraulic assembly as described in claim 5, characterized in that, The fixed flange includes a plug portion inserted into the mounting hole and a fixing portion mounted on the top of the housing. The clearance hole passes through the plug portion and the fixing portion, and the limiting flange is mounted on the fixing portion.

7. The hydraulic assembly as described in claim 5, characterized in that, The fixed flange has multiple first mounting holes along its circumference, and the limiting flange has multiple second mounting holes that correspond one-to-one with the first mounting holes. Locking elements are inserted into the first mounting holes and the second mounting holes.

8. The hydraulic assembly as claimed in claim 1, characterized in that, The hydraulic assembly also includes a level detector and an alarm mounted on the hydraulic oil tank, as well as a controller that is communicatively connected to the level detector and the alarm, respectively. The alarm is used to emit an audible or visual alarm.

9. The hydraulic assembly as claimed in claim 1, characterized in that, The hydraulic oil tank is also equipped with lifting lugs.

10. A vehicle, characterized in that, The hydraulic assembly having any one of claims 1-9.

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