Integrated oil tank structure and vehicle hydraulic system

Abstract

The utility model provides an integrated oil tank structure and a vehicle hydraulic system, and relates to the technical field of oil tanks. A through hole is formed in a tank body of the oil tank; an oil using structure is fixedly mounted on the outer wall of the tank body of the oil tank at the through hole; the oil consumption structure comprises a mounting surface, the mounting surface is attached to the outer wall of the tank body of the oil tank at the through hole, an oil consumption port is formed in the mounting surface and is opposite to the through hole, and a sealing structure is arranged between the mounting surface and the outer wall of the tank body of the oil tank; the oil using structure returns oil to the oil tank or sucks oil from the oil tank through the oil using port and the through hole; and the sealing structure is used for preventing oil from leaking from a gap between the mounting surface and the oil tank body. The oil using structure is directly and fixedly installed on the oil tank, an oil return or oil suction pipeline between the oil using structure and the oil tank is omitted, cost is saved, the number of pipelines and connectors of the hydraulic system is reduced, and the using stability of the hydraulic system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil tank, specifically, an integrated oil tank structure and vehicle hydraulic system. BACKGROUND

[0002] The hydraulic system is very widely used, in the automobile field, the hydraulic system is widely used in brake system, suspension system, steering system etc.;In the engineering machinery field, the hydraulic system is used for power transmission and control of excavator, loader, bulldozer etc., in the agricultural machinery field, the hydraulic system is used for power transmission and control of tractor, harvester etc.

[0003] At present, the mainstream vehicle hydraulic system, the oil tank is usually arranged separately, and is communicated with other oil structures through pipeline to realize oil return or oil supply, on the one hand, these oil return or oil supply pipelines are more, such as for a vehicle hydraulic system with electric and manual integrated parking function, the oil structure usually includes liquid filling valve, parking valve and manual pump components, at least two oil return pipelines of liquid filling valve and parking valve, and one oil suction pipeline of manual pump, the pipeline arrangement is troublesome, and the number of joints is also more, which increases the risk of leakage;On the other hand, the oil tank and each oil structure are arranged separately, which occupies more position space of the vehicle. SUMMARY

[0004] The utility model solves the problem that the oil tank and the oil structure are arranged separately.

[0005] To solve the above problems, the utility model provides an integrated oil tank structure and vehicle hydraulic system.

[0006] Firstly, the utility model provides an integrated oil tank structure, which comprises an oil tank and an oil structure;A through hole is formed in the tank body of the oil tank;The oil structure is fixedly installed on the outer wall of the tank body of the oil tank at the through hole;The oil structure comprises a mounting surface, the mounting surface is attached to the outer wall of the tank body of the oil tank at the through hole, an oil outlet is arranged on the mounting surface, the oil outlet is arranged opposite to the through hole, and a sealing structure is arranged between the mounting surface and the outer wall of the tank body of the oil tank;The oil structure returns oil to the oil tank or sucks oil from the oil tank through the oil outlet and the through hole;The sealing structure is used to prevent oil leakage from the gap between the mounting surface and the tank body of the oil tank.

[0007] Further, the oil structure comprises three liquid filling valve assemblies, parking valve assemblies and manual pump assemblies;The through hole on the oil tank is correspondingly provided with three through holes, including a first through hole, a second through hole and a third through hole.

[0008] Further, the tank body of the oil tank is in a cuboid structure, the cover plate of the oil tank is provided with the first through hole and the second through hole, and the lower part of the side plate of the oil tank is provided with the third through hole.

[0009] Further, the liquid filling valve assembly comprises a liquid filling valve body, and the bottom surface of the liquid filling valve body is attached to the outer wall of the tank body of the oil tank at the first through hole.

[0010] Further, the bottom surface of the liquid filling valve body is provided with a liquid filling valve filter, the liquid filling valve filter passes through the first through hole and is located in the interior of the oil tank.

[0011] Further, the manual pump assembly comprises a manual pump valve body, and the side surface of the manual pump valve body is attached and fixed to the outer wall of the tank body of the oil tank at the third through hole.

[0012] Further, the outer wall of the tank body of the oil tank at the third through hole is provided with a mounting boss for mounting and fixing the manual pump valve body.

[0013] Further, the end plate of the oil tank is provided with an oil return port at the upper part and an oil suction port at the lower part.

[0014] Further, the sealing structure comprises a first sealing gasket, and a hole is formed in the first sealing gasket, and the hole wall of the hole is arranged outside the through hole.

[0015] In the second aspect, the utility model provides a kind of vehicle hydraulic system, comprising the integrated oil tank structure described above.

[0016] The integrated oil tank structure of the utility model has the following beneficial effects:

[0017] In the integrated oil tank structure, the oil using structure is directly fixed and installed on the oil tank, the oil return or oil suction pipeline between the oil using structure and the oil tank is saved, the cost is saved, the number of hydraulic system pipeline and joint is reduced, the use stability of the hydraulic system is improved, and the integration of two independent components is realized, the integration degree of the hydraulic system is improved, the problem of multiple system components and scattered distribution is avoided, the layout is simple, and the occupied space is less.In addition, the oil tank is generally installed outside, which is convenient for observing the liquid level and temperature on the oil tank, and the installation and maintenance are very convenient.The integration of other components on the oil tank also facilitates the maintenance and repair of other components. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the integrated oil tank structure of the utility model.

[0019] Figure 2 It is a split structure schematic view of the integrated oil tank structure of the utility model.

[0020] Figure 3 It is the bottom surface schematic view of the liquid filling valve body of the integrated oil tank structure.

[0021] Figure 4 It is the bottom surface schematic view of the parking valve body of the integrated oil tank structure.

[0022] Figure 5 It is the side surface schematic view of the manual pump valve body of the integrated oil tank structure.

[0023] Figure 6 It is the schematic view of principle of the integrated oil tank structure.

[0024] Figure 7 It is the schematic view of principle of the vehicle hydraulic system.

[0025] Mark explanation:

[0026] 1, oil tank; 101, cover plate; 102, side plate; 103, end plate; 11, first through hole; 12, second through hole; 13, third through hole; 14, mounting boss; 15, second sealing gasket; 16, oil return port; 17, oil suction port; 21, mounting surface; 22, oil using port; 3, liquid filling valve assembly; 31, liquid filling valve body; 32, liquid filling valve filter; 4, parking valve assembly; 41, parking valve body; 5, manual pump assembly; 51, manual pump valve body; 6, first sealing gasket; 61, hole; 71, first hose; 72, second hose; 73, pressure sensor; 74, oil suction filter; 75, oil suction flange sealing gasket; 76, oil suction flange joint; 77, oil drain screw plug; 78, liquid level and temperature gauge; 79, air cleaner; 81, accumulator assembly; 82, brake pedal valve assembly; 83, service brake; 84, parking brake; 85, power steering; 86, hydraulic pump assembly. Specific implementation

[0027] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings. Although some embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be realized in various forms, and should not be interpreted as being limited to the embodiments described herein, on the contrary, these embodiments are provided to more thoroughly and completely understand the utility model. It should be understood that the drawings and embodiments of the utility model are only for illustrative purposes, and are not used to limit the protection scope of the utility model.

[0028] As used herein, the term "includes" and its variants are open-ended, meaning that "includes but is not limited to"; the term "based on" means "based, at least in part, on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Related definitions are given throughout the description. It is to be noted that the terms "first", "second", and the like used in the present disclosure are used only to distinguish different devices, modules or units from each other, and do not imply the order or sequence of the functions executed by the devices, modules or units.

[0029] It should be noted that the modification of "one" or "multiple" mentioned in the present application is illustrative and not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0030] As Figures 1-6 shown, the integrated oil tank structure provided by the embodiment of the present application comprises an oil tank 1 and an oil using structure; a through hole is formed on the tank body of the oil tank 1; the oil using structure is fixedly installed on the outer wall of the tank body of the oil tank 1 at the through hole; the oil using structure comprises a mounting surface 21, the mounting surface 21 is attached to the outer wall of the tank body of the oil tank 1 at the through hole, an oil using oil port 22 is arranged on the mounting surface 21, the oil using oil port 22 is arranged opposite to the through hole, and a sealing structure is arranged between the mounting surface 21 and the outer wall of the tank body of the oil tank 1; the oil using structure returns oil to the oil tank 1 or sucks oil from the oil tank 1 through the oil using oil port 22 and the through hole; and the sealing structure is used to prevent oil leakage from the gap between the mounting surface 21 and the tank body of the oil tank 1.

[0031] In the above integrated oil tank structure, the oil using structure is a hydraulic system component that directly sucks oil from the oil tank 1 or directly returns oil to the oil tank 1, which can be, for example, a liquid-filled valve assembly 3, a parking valve assembly 4 or a manual pump assembly 5, etc. The oil using structure is directly fixedly installed on the oil tank 1, and the oil return or oil suction pipeline between the oil using structure and the oil tank 1 is omitted, thereby saving cost, reducing the number of hydraulic system pipelines and joints, and improving the use stability of the hydraulic system; moreover, the integration of two independent components is realized, the integration degree of the hydraulic system is improved, the problem of multiple system components and scattered distribution is avoided, the layout is simple, and the occupied space is small. In addition, the oil tank 1 is generally installed outward, which is convenient for observing the liquid level and temperature on the oil tank 1, and the installation and maintenance are very convenient. Integrating other components on the oil tank 1 also facilitates the maintenance and repair of other components.

[0032] Further, as Figure 1 and Figure 2As shown, the oil using structure has three, including the liquid filling valve assembly 3, the parking valve assembly 4 and the manual pump assembly 5; the through hole on the oil tank 1 is correspondingly provided with three, including the first through hole 11, the second through hole 12 and the third through hole 13.

[0033] The oil using structure and the through hole are correspondingly provided with three groups, which greatly uses the integrable capacity of the oil tank 1, and the integration degree of the hydraulic system is higher.

[0034] For a vehicle hydraulic system with an electrically and manually integrated parking function, when the liquid filling valve assembly 3, the parking valve assembly 4 and the manual pump assembly 5 are fixedly installed on the oil tank 1, that is, the liquid filling valve, the parking valve and the manual pump are integrated, the vehicle only needs to consider the installation position of the accumulator assembly 81 and the hydraulic pump assembly 86. The pedal valve and the steering gear are installed in the cab, and the parking brake 84 and the service brake 83 are usually integrated in the axle position. The positions of these elements are relatively fixed and cannot be changed. This greatly simplifies the layout design work of the vehicle hydraulic system and greatly improves the efficiency of the hydraulic system installation and debugging work.

[0035] Further, as shown in Figure 1 and Figure 2 , the tank body of the oil tank 1 is a cuboid structure, the first through hole 11 and the second through hole 12 are arranged on the cover plate 101 of the oil tank 1, and the third through hole 13 is arranged at the lower part of the side plate 102 of the oil tank 1.

[0036] The oil tank 1 adopts a conventional cuboid structure, which has large capacity and is convenient to fix and install on the vehicle body. The outer wall surface of the cuboid structure is flat and has a large size, which can facilitate the installation and fixation of the oil using structure. Specifically, the first through hole 11 is used for communication with the liquid filling valve assembly 3, the second through hole 12 is used for communication with the parking valve assembly 4, and the third through hole 13 is used for communication with the manual pump assembly 5.

[0037] In addition, the tank body of the oil tank 1 is composed of the cover plate 101 and the cuboid tank, and the second sealing gasket 15 is arranged between the cover plate 101 and the cuboid tank below the cover plate 101. The cuboid tank is composed of a bottom plate, two opposite side plates 102 and two opposite end plates 103.

[0038] Since the manual pump assembly 5 needs to suck oil from the oil tank 1, the third through hole 13 and the manual pump assembly 5 are arranged at the bottom of the side plate 102, so that the oil using oil port 22 of the manual pump assembly 5 is lower than the hydraulic oil surface in the oil tank 1, meeting the oil sucking requirement. The liquid filling valve assembly 3 and the parking valve assembly 4 both return oil to the oil tank 1, and the amount of returned oil is small. The first through hole 11 and the second through hole 12 are arranged on the cover plate 101, which correspondingly makes the oil using oil ports 22 of the liquid filling valve assembly 3 and the parking valve assembly 4 all located at the top of the oil tank 1, which is higher than the liquid level in the oil tank 1.

[0039] Further, as shown in Figures 1-3As shown, the filling valve assembly 3 includes a filling valve valve body 31, and the bottom surface of the filling valve valve body 31 is attached to the outer wall of the oil tank 1 at the first through hole 11.

[0040] The bottom surface of the filling valve valve body 31 is used as the mounting surface 21 of the filling valve assembly 3, and is attached and fixed to the cover plate 101. The oil port 22 of the filling valve is adjusted to the bottom surface, which is easy to achieve. In addition, the filling valve valve body 31 has a square structure, and a bolt is arranged at each corner of the top surface of the filling valve valve body 31. The bolt passes through the filling valve valve body 31 and the cover plate 101, and a fastening nut is screwed on the bottom surface of the cover plate 101, so as to realize the fixed connection of the filling valve valve body 31 and the cover plate 101.

[0041] Further, as shown in Figure 3 , a filling valve filter 32 is arranged on the bottom surface of the filling valve valve body 31, and the filling valve filter 32 passes through the first through hole 11 and is located inside the oil tank 1.

[0042] The oil tank 1 not only integrates the filling valve, but also integrates the filling valve filter 32 with the filling valve valve body 31 and installs them in the oil tank 1, so as to maximize the integration of the filling and filtering functions. The filling valve filter 32 is usually a high-pressure filter.

[0043] Further, as shown in Figure 1 , Figure 2 and Figure 4 , the parking valve assembly 4 includes a parking valve valve body 41, and the bottom surface of the parking valve valve body 41 is attached to the outer wall of the oil tank 1 at the second through hole 12.

[0044] The bottom surface of the parking valve valve body 41 is used as the mounting surface 21 of the parking valve assembly 4, and is attached and fixed to the cover plate 101. The oil port 22 of the parking valve is adjusted to the bottom surface, which is easy to achieve. In addition, the parking valve valve body 41 has a square structure, and a bolt is arranged at each corner of the top surface of the parking valve valve body 41. The bolt passes through the parking valve valve body 41 and the cover plate 101, and a fastening nut is screwed on the bottom surface of the cover plate 101, so as to realize the fixed connection of the parking valve valve body 41 and the cover plate 101.

[0045] Further, as shown in Figure 1 , Figure 2 and Figure 5 , the manual pump assembly 5 includes a manual pump valve body 51, and the side surface of the manual pump valve body 51 is attached and fixed to the outer wall of the oil tank 1 at the third through hole 13.

[0046] The side surface of the manual pump valve body 51 is used as the mounting surface 21 of the manual pump assembly 5, and is attached and fixed to the side plate 102. The oil port 22 of the manual pump is adjusted to the bottom surface, which is easy to achieve.

[0047] Further, as shown in Figure 2As shown, the outer wall of the tank body at the third through hole 13 is provided with a mounting boss 14, which is used to mount and fix the manual pump valve body 51.

[0048] The mounting boss 14 can provide a thicker mounting and fixing base, and a flat and reliable mounting plane, so that the manual pump valve body 51 can be stably and reliably mounted on the side plate 102. In addition, a sealing structure is arranged between the mounting boss 14 and the side surface of the manual pump valve body 51 to seal. The manual pump valve body 51 has a square block structure, and a bolt is arranged at each corner of the side surface of the manual pump valve body 51. The bolt penetrates the manual pump valve body 51 and is screwed into the mounting boss 14, so as to realize the fixed connection of the manual pump valve body 51 and the side plate 102.

[0049] Further, as shown in Figure 1 and Figure 2 , the end plate 103 of the oil tank 1 is provided with an oil return port 16 at the upper portion and an oil suction port 17 at the lower portion.

[0050] Although the oil tank 1 has integrated three oil structures in the hydraulic system, other components in the hydraulic system, such as the hydraulic pump assembly 86, the parking brake 84 and other components, still have the needs of oil suction and return, so it is still necessary to reserve the oil return port 16 and the oil suction port 17, which are the regular structures of the oil tank 1.

[0051] Further, as shown in Figure 2 , the sealing structure includes a first sealing gasket 6, and a hole 61 is formed in the first sealing gasket 6. The hole wall of the hole 61 is arranged outside the through hole. The sealing structure also has three, and one is arranged at each through hole.

[0052] The sealing structure prevents oil leakage between the mounting surface 21 and the outer wall of the tank body when oil is sucked or returned through the oil port 22. The mounting surface 21 and the outer wall of the tank body at the through hole are both flat surfaces, so the sealing structure is designed as a sealing gasket with a hole. After mounting and fixing, the mounting surface 21 and the outer wall of the tank body extrude the sealing gasket to achieve sealing, and the sealing effect is good.

[0053] In use, as shown in Figure 1 , Figure 2 and Figure 6As shown, the filling valve assembly 3 employs a dual-way filling valve. Ports A1 and A2 are interfaces for connecting to the accumulator or other hydraulic components. These two ports allow hydraulic oil to flow between the filling valve and the accumulator, thereby achieving filling and pressure holding of the accumulator. Port P is the inlet for pressurized oil in the filling valve assembly 3. The filling valve assembly 3 is connected to the parking valve assembly 4 via a first hose 71. The manual pump assembly 5 is connected to the parking valve assembly 4 via a second hose 72. The first hose 71 and the second hose 72 are connected to the same inlet port of the parking valve assembly 4. A pressure sensor 73 is connected to the inlet and outlet pipes of the parking valve assembly 4, respectively. Port B is the output interface of the parking valve assembly 4, providing braking pressure to the parking brake 84. An oil suction filter 74, an oil suction flange gasket 75, and an oil suction flange connector 76 are provided at the oil suction port 17. The basic structure of the oil tank 1 also includes: an oil drain plug 77 on the bottom plate, a liquid level and temperature gauge 78 on the other end plate 103, and an air filter 79 at the inlet of the oil tank 1; S1 and S2 are hydraulic pump suction ports 17, and T1 and T2 are external oil system return ports 16, which are connected to the system return oil.

[0054] This utility model provides a vehicle hydraulic system, including the aforementioned integrated oil tank structure.

[0055] Furthermore, such as Figure 7 As shown, the vehicle hydraulic system also includes an accumulator assembly 81, a brake pedal valve assembly 82, a service brake 83, a parking brake 84, a power steering system 85, and a hydraulic pump assembly 86.

[0056] Accumulator assembly 81 is connected to ports A1 and A2 of filling valve assembly 3. Accumulator assembly 81 is also connected to brake pedal valve assembly 82 and service brake 83 to achieve service braking. Parking brake 84 is connected to port B of parking valve assembly 4 for parking braking. Hydraulic pump assembly 86 has its P1 output port connected to power steering 85, its P2 output port connected to port P of filling valve assembly 3, and its inlet port connected to ports S1 and S2 to draw oil from oil tank 1 and supply it to power steering 85 and filling valve assembly 3. Power steering 85's T port is connected to the T2 return port 16 of oil tank 1 for oil return.

[0057] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. An integrated tank structure, characterized by, The oil tank (1) and the oil structure are included. A through hole is formed on the tank body of the oil tank (1), and the oil structure is fixedly installed on the outer wall of the tank body of the oil tank (1) at the through hole. The oil structure includes a mounting surface (21), which is attached to the outer wall of the tank body of the oil tank (1) at the through hole, and an oil outlet (22) is arranged on the mounting surface (21) and is arranged opposite to the through hole. The oil structure returns oil to or absorbs oil from the oil tank (1) through the oil outlet (22) and the through hole, and the sealing structure is used to prevent oil leakage from the gap between the mounting surface (21) and the tank body of the oil tank (1).

2. The integrated oil tank structure according to claim 1, characterized by, The oil structure includes three components, namely, a liquid filling valve assembly (3), a parking valve assembly (4), and a manual pump assembly (5), and the through hole on the oil tank (1) is correspondingly provided with three through holes, namely, a first through hole (11), a second through hole (12), and a third through hole (13).

3. The integrated oil tank structure according to claim 2, characterized by, The tank body of the oil tank (1) is in a cuboid structure, the first through hole (11) and the second through hole (12) are arranged on the cover plate (101) of the oil tank (1), and the third through hole (13) is arranged on the lower part of the side plate (102) of the oil tank (1).

4. The integrated oil tank structure according to claim 2, characterized by, The liquid filling valve assembly (3) includes a liquid filling valve body (31), and the bottom surface of the liquid filling valve body (31) is attached to the outer wall of the tank body of the oil tank (1) at the first through hole (11).

5. The integrated oil tank structure according to claim 4, characterized by A liquid filling valve filter (32) is arranged on the bottom surface of the liquid filling valve body (31), and the liquid filling valve filter (32) passes through the first through hole (11) and is located inside the oil tank (1).

6. The integrated oil tank structure according to claim 2, characterized by The manual pump assembly (5) includes a manual pump valve body (51), and the side surface of the manual pump valve body (51) is fixedly attached to the outer wall of the tank body of the oil tank (1) at the third through hole (13).

7. The integrated oil tank structure according to claim 6, characterized by An installation boss (14) is arranged on the outer wall of the tank body of the oil tank (1) at the third through hole (13), and the installation boss (14) is used to fix the manual pump valve body (51).

8. The integrated oil tank structure according to claim 3, characterized by, An oil return port (16) is arranged on the upper part of the end plate (103) of the oil tank (1), and an oil suction port (17) is arranged on the lower part of the end plate (103).

9. The integrated oil tank structure according to claim 1, characterized by, The sealing structure includes a first sealing gasket (6), and a hole (61) is formed on the first sealing gasket (6), and the hole wall of the hole (61) is arranged outside the through hole.

10. A vehicle hydraulic system characterized by, The integrated oil tank structure as claimed in any one of claims 1-9 is included.

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