Hydraulic oil tank, integrated hydraulic power device and operation machine

Abstract

The utility model relates to the field of hydraulic power devices, and discloses a hydraulic oil tank, an integrated hydraulic power device and an operation machine.The hydraulic oil tank comprises a first tank body, a heat conduction supporting assembly and a plurality of cooling fins, and the heat conduction supporting assembly is arranged on the peripheral side of the first tank body; the heat dissipation fins are supported on the heat conduction supporting assembly and are sequentially arranged in the axial direction of the first box body, the heat dissipation fins make contact with the peripheral wall of the first box body, and heat can be mutually transferred through the heat conduction supporting assembly. The hydraulic oil tank disclosed by the utility model has good heat dissipation performance, ensures the structural compactness, can be suitable for the integrated hydraulic power device, and remarkably improves the heat dissipation performance of the integrated hydraulic power device, so that the integrated hydraulic power device can continuously work under high-frequency and heavy-load working conditions, and therefore, the hydraulic oil tank has good practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic devices, and in particular relates to a hydraulic oil tank, an integrated hydraulic power device and an operating machine. Background Art

[0002] Hydraulic systems are widely used in various types of operating machinery, and the heat dissipation performance of hydraulic systems directly affects the operating capacity of operating machinery. Taking the hydraulic system of an integrated hydraulic power unit as an example, the integrated hydraulic power unit is mainly a device formed by highly integrated components such as hydraulic oil tanks, power elements, valves, etc., with the characteristics of compact structure, miniaturization, lightweight, and high integration. However, in actual use, the heat dissipation performance of the integrated hydraulic power unit is poor, which causes the temperature of the hydraulic oil in the device to rise more easily during operation, which has a great impact on the working performance and service life of the device. Therefore, in order to ensure the service life and working performance of the device, the existing integrated hydraulic power unit is only suitable for operation under light load or intermittent motion conditions, and it is difficult to achieve continuous operation under high-frequency and heavy load conditions, and its practicality is poor. Other hydraulic systems with higher integration also have the same problem. Utility Model Content

[0003] In view of the above-mentioned defects or shortcomings, the utility model provides a hydraulic oil tank, an integrated hydraulic power device and an operating machine, aiming to solve the technical problem of poor heat dissipation performance of the existing hydraulic system.

[0004] In order to achieve the above object, the utility model provides a hydraulic oil tank, the hydraulic oil tank comprising:

[0005] The first box;

[0006] A heat-conducting support assembly, arranged on the outer peripheral side of the first box;

[0007] A plurality of heat dissipation fins are respectively supported on the thermally conductive support assembly and are arranged in sequence along the axial direction of the first box body. The plurality of heat dissipation fins are respectively in contact with the outer peripheral wall of the first box body and can transfer heat to each other through the thermally conductive support assembly.

[0008] Optionally, the heat dissipation fin is provided with a first through hole, and the heat dissipation fin is sleeved on the thermal conductive support assembly through the first through hole.

[0009] Optionally, the heat dissipation fin is provided with a second through hole, and is sleeved on the first box body through the second through hole, and an inner hole wall of the second through hole is in close contact with an outer peripheral wall of the first box body.

[0010] Optionally, the thermally conductive support assembly includes a plurality of thermally conductive support members, and the plurality of thermally conductive support members are arranged at intervals around the outer peripheral wall of the first box body.

[0011] Optionally, the thermally conductive support member comprises:

[0012] A support rod connected to the first box;

[0013] A heat conducting pipe, sleeved on the support rod;

[0014] Wherein, the heat dissipation fin is sleeved on the heat conducting pipe through the first through hole.

[0015] Optionally, a protrusion is provided on the heat dissipation fin, and two adjacent heat dissipation fins are spaced apart by the alignment and abutment of their respective protrusions.

[0016] The utility model also provides an integrated hydraulic power device, which includes the hydraulic oil tank mentioned above.

[0017] Optionally, the hydraulic oil tank further comprises a first end cover, a second end cover, a third end cover and a second box body, the first end cover, the second end cover and the third end cover are sequentially arranged at intervals, the first box body is arranged between the first end cover and the second end cover, and together with the first end cover and the second end cover, a first oil chamber is enclosed, the second box body is arranged between the second end cover and the third end cover, and together with the second end cover and the third end cover, a second oil chamber is enclosed, and the second end cover is provided with an oil hole connecting the first oil chamber and the second oil chamber;

[0018] The integrated hydraulic power device further includes a pressurized airbag and a hydraulic pump. The airbag body of the pressurized airbag is arranged in the first oil chamber, and the hydraulic pump is arranged in the second oil chamber.

[0019] Optionally, a one-way valve is provided in the oil hole, an inlet end of the one-way valve is communicated with the first oil chamber, and an outlet end of the one-way valve is communicated with the second oil chamber.

[0020] The utility model also provides an operating machine, which comprises the above-mentioned integrated hydraulic power device.

[0021] Through the above technical scheme, in the hydraulic oil tank of the utility model, the heat-conducting support component can not only support the multiple heat dissipation fins, but also realize the heat transfer between the multiple heat dissipation fins. In this way, the multiple heat dissipation fins can be installed on the heat-conducting support component and contact the outer peripheral wall of the first box body, so as to dissipate heat to the first box body, and through the heat-conducting effect of the heat-conducting support component, the multiple heat dissipation fins can transfer heat to each other, ensuring the uniformity of heat dissipation of the first box body, avoiding the situation where the local temperature of the first box body is too high, so that the hydraulic oil tank has good heat dissipation performance; that is, the heat-conducting support component of the utility model has both supporting and heat-conducting effects on the heat dissipation fins, which can significantly improve the heat dissipation performance of the hydraulic oil tank while ensuring the compactness of the structure of the hydraulic oil tank, so that the hydraulic oil tank can be suitable for hydraulic systems with a high degree of integration such as integrated hydraulic power units, significantly improving the heat dissipation performance of hydraulic systems with a high degree of integration, so that hydraulic systems with a high degree of integration can continue to operate under high-frequency and heavy-load conditions, thus having good practicality.

[0022] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0024] Figure 1 It is a three-dimensional structural schematic diagram of a hydraulic oil tank in a specific implementation manner of the utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the hydraulic oil tank;

[0026] Figure 3 for Figure 1 A schematic diagram of the structure of the heat sink fins;

[0027] Figure 4 for Figure 1 A schematic diagram of the structure in which the heat dissipation fins are supported on the heat pipe;

[0028] Figure 5 It is a schematic cross-sectional structure diagram of an integrated hydraulic power device in a specific implementation mode of the utility model;

[0029] Description of the accompanying drawings in the embodiment of the utility model

[0030] 1 First box 2 First end cover

[0031] 3 Second end cover 4 Heat sink fin

[0032] 5 Support rod 6 Heat pipe

[0033] 7 Raised part 8 Second box

[0034] 9 Third end cover 10 Pressurized air bag

[0035] 11 Hydraulic pump 12 Check valve

[0036] a First oil chamber b Second oil chamber

[0037] c First through hole d Second through hole DETAILED DESCRIPTION

[0038] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings or are used to describe the relative positional relationships of components in the vertical, perpendicular or gravity direction.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with exemplary embodiments.

[0042] See attached Figure 1 and attached Figure 2 As shown, the first exemplary embodiment of the utility model provides a hydraulic oil tank, which includes a first tank body 1, a heat-conducting support assembly and a plurality of heat-dissipating fins 4, wherein the heat-conducting support assembly is arranged on the outer peripheral side of the first tank body 1, and the plurality of heat-dissipating fins 4 are respectively supported on the heat-conducting support assembly and are arranged in sequence along the axial direction of the first tank body 1, and the plurality of heat-dissipating fins 4 are respectively in contact with the outer peripheral wall of the first tank body 1 and can transfer heat to each other through the heat-conducting support assembly.

[0043] It can be understood that the first box body 1 is the part of the hydraulic oil tank that mainly stores hydraulic oil, so that the first box body 1 has good heat dissipation performance, that is, the hydraulic oil tank can have good heat dissipation performance. In the hydraulic oil tank of the present embodiment, the heat conductive support assembly can not only support the plurality of heat dissipation fins 4, but also realize heat transfer between the plurality of heat dissipation fins 4. With such arrangement, the plurality of heat dissipation fins 4 can be installed on the heat conductive support assembly and contact the outer peripheral wall of the first box body 1, so as to dissipate heat for the first box body 1, and through the heat conductive effect of the heat conductive support assembly, the plurality of heat dissipation fins 4 can transfer heat to each other, thereby ensuring the uniformity of heat dissipation of the first box body 1 and avoiding the situation where the local temperature of the first box body 1 is too high, so that the hydraulic oil tank has good heat dissipation performance; that is, the heat conductive support assembly of the utility model has both supporting and heat conductive effects on the heat dissipation fins 4, which can significantly improve the heat dissipation performance of the hydraulic oil tank while ensuring the compactness of the structure of the hydraulic oil tank, so that the hydraulic oil tank can be suitable for hydraulic systems with a high degree of integration such as integrated hydraulic power units, significantly improve the heat dissipation performance of hydraulic systems with a high degree of integration, so that hydraulic systems with a high degree of integration can continue to operate under high frequency and heavy load conditions, thus having good practicality.

[0044] Of course, in some embodiments, the hydraulic oil tank provided in the embodiment of the utility model can also be used in conventional hydraulic systems, such as hydraulic systems with hydraulic hoses, hydraulic systems based on distributed valve groups, etc. The hydraulic oil tank can also play a role in improving the heat dissipation performance of the hydraulic system.

[0045] In one embodiment, referring to the attached Figure 2 and attached Figure 3 As shown, the heat dissipation fin 4 is provided with a first through hole c, and the heat dissipation fin 4 is sleeved on the heat-conducting support component through the first through hole c. That is to say, the heat dissipation fin 4 is installed on the heat-conducting support component by sleeve arrangement. Such arrangement makes the heat dissipation fin 4 and the heat-conducting support component nested with each other, which can further improve the structural compactness of the hydraulic oil tank.

[0046] It can be understood that the thermally conductive support component is located on the outer peripheral side of the first box body 1. In order to ensure the reliability of the thermally conductive support component in supporting the heat dissipating fins 4, the thermally conductive support component can be set to be spaced apart from the outer peripheral wall of the first box body 1. In this way, the heat dissipating fins 4 can be completely mounted on the thermally conductive support component through the first through hole c.

[0047] Of course, in some other embodiments, the heat dissipating fins 4 can also be installed on the thermally conductive support assembly in other ways. For example, the heat dissipating fins 4 can also be installed on the thermally conductive support assembly by embedding, that is, the thermally conductive support assembly can form a mounting groove extending along the axial direction of the first box body 1, and the heat dissipating fins 4 are arranged between the thermally conductive support assembly and the first box body 1 and are embedded in the mounting groove of the thermally conductive support assembly through the edge so as to be installed on the thermally conductive support assembly.

[0048] In one embodiment, referring to the attached Figure 2 and attached Figure 3 As shown, the heat dissipation fin 4 is provided with a second through hole d, and is sleeved on the first box body 1 through the second through hole d, and the inner hole wall of the second through hole d is in close contact with the outer peripheral wall of the first box body 1. Such an arrangement enables the heat dissipation fin 4 to be in full contact with the outer peripheral wall of the first box body 1, so as to achieve full heat dissipation of the first box body 1.

[0049] Specifically, the heat dissipating fin 4 can be set as an integrally formed annular structure, and the inner hole surrounded by its inner circle is the second through hole d of the heat dissipating fin 4. It can also be set to include multiple sheet-shaped heat dissipating units, and the multiple heat dissipating units are spliced ​​in sequence around the outer peripheral wall of the first box body 1 and the inner side walls together surround the second through hole d of the heat dissipating fin 4.

[0050] In order to further increase the contact area between the heat sink 4 and the outer wall of the first box body 1, a sleeve structure extending along the outer wall of the first box body 1 can be formed on the hole wall of the second through hole d of the heat sink 4. Such an arrangement can further improve the heat dissipation effect of the heat sink 4 on the first box body 1.

[0051] In one embodiment, referring to the attached Figure 1 and attached Figure 2 As shown, the heat-conducting support assembly includes a plurality of heat-conducting support members, and the plurality of heat-conducting support members are arranged at intervals around the outer peripheral wall of the first box body 1. With such an arrangement, the heat-dissipating fins 4 can be supported on one, two or more heat-conducting support members according to the requirements. For example, the heat-dissipating fins 4 are provided with the above-mentioned first through holes c and second through holes d, and the first through holes c are arranged in a plurality and arranged at intervals around the second through holes d. The heat-dissipating fins 4 can be respectively sleeved on the plurality of heat-conducting support members through the plurality of first through holes c, so as to be supported on the plurality of heat-conducting support members at the same time. In this way, the plurality of heat-conducting support members can support and conduct heat to the heat-dissipating fins 4 at the same time, and the structural strength and heat dissipation uniformity of the plurality of heat-dissipating fins 4 can be effectively improved.

[0052] In one embodiment, referring to the attached Figure 2As shown, the heat-conducting support member includes a support rod 5 and a heat-conducting pipe 6, the support rod 5 is connected to the first box body 1, and the heat-conducting pipe 6 is sleeved on the support rod 5; wherein the heat-dissipating fin 4 is sleeved on the heat-conducting pipe 6 through the first through hole c. In this arrangement, the support rod 5 supports the heat-dissipating fin 4 through the heat-conducting pipe 6, and the heat-conducting pipe 6 directly contacts the heat-dissipating fin 4 to achieve heat transfer.

[0053] It can be understood that the support rod 5 can be directly or indirectly connected to the first box body 1. For example, a connecting seat is formed on the outer wall of the first box body 1, and the support rod 5 can be directly connected to the connecting seat. Alternatively, the two ends of the first box body 1 are respectively connected to end covers, and the two ends of the support rod 5 are respectively connected to the two end covers to indirectly connect to the first box body 1.

[0054] Specifically, the heat pipe 6 may be a metal pipe with good thermal conductivity, such as a copper pipe.

[0055] Specifically, the cross-sectional shape of the support rod 5 can be circular, elliptical, polygonal or irregular, and the cross-sectional shape of the heat pipe 6 and the cross-sectional shape of the first through hole c are both compatible with the cross-sectional shape of the support rod 5 .

[0056] In one embodiment, referring to the attached Figure 4 As shown, the heat dissipation fin 4 is provided with a protrusion 7, and two adjacent heat dissipation fins 4 are spaced apart by the alignment and abutment of their respective protrusions 7. With such a configuration, the two adjacent heat dissipation fins 4 can transfer heat to each other through the abutment of their respective protrusions 7, further ensuring the uniformity of heat dissipation, and there is a convection heat exchange space between the adjacent heat dissipation fins 4 to ensure the heat exchange effect. In addition, they can also support each other through the abutment of their respective protrusions 7. In this way, with the support effect of the heat conductive support assembly, the structural strength of the heat dissipation fin 4 can be greatly improved, and the thickness requirement of the heat dissipation fin 4 can be greatly reduced, so that more heat dissipation fins 4 can be arranged in a limited space, the heat dissipation area is increased, and the heat dissipation effect is significantly improved.

[0057] Specifically, the protrusion 7 can be provided on the heat dissipation fin 4 by bonding or welding, or formed on the heat dissipation fin 4 by stamping.

[0058] It can be understood that since two adjacent heat sink fins 4 are spaced apart by their respective protrusions 7, that is, the spacing between the two heat sink fins 4 is determined by the protrusion height of the protrusion 7, it is configured in this way. During the installation process, it is sufficient to select the heat sink fin 4 with the protrusion 7 having the corresponding protrusion height specification according to the spacing requirements. Moreover, there is no need to use auxiliary tools. It is only necessary to put multiple heat sink fins 4 of the same specification on the heat conductive support and press them against each other, so that the multiple heat sink fins 4 can be arranged at equal intervals. In this way, the difficulty of installation is effectively reduced and the installation process is simplified.

[0059] In one embodiment, referring to the attached Figure 3 and attached Figure 4 As shown, the heat dissipation fins 4 can be formed into multiple groups of hollow protrusion structures by stamping, and the multiple groups of hollow protrusion structures are arranged at intervals along the circumference of the first box body 1 and protrude along the axial direction of the first box body. Each group of hollow protrusion structures includes multiple hollow protrusion structures arranged at intervals along the radial direction of the first box body 1. The protrusion directions of two adjacent hollow protrusion structures in the radial direction of the first box body 1 are opposite. Such an arrangement can further improve the structural strength of the heat dissipation fins 4 and further significantly reduce the thickness of the heat dissipation fins 4. In addition, the hollow protrusion structure can also be used as the above-mentioned protrusion 7.

[0060] The second exemplary embodiment of the utility model provides an integrated hydraulic power device, which includes the above-mentioned hydraulic oil tank. As mentioned above, the hydraulic oil tank has good heat dissipation performance, so that the integrated hydraulic power device using the hydraulic oil tank also has good heat dissipation performance, so that the integrated hydraulic power device can continue to operate under high-frequency and heavy-load conditions, thereby having good practicality.

[0061] In one embodiment, referring to the attached Figure 5 The hydraulic oil tank also includes a first end cover 2, a second end cover 3, a third end cover 9 and a second box body 8. The first end cover 2, the second end cover 3 and the third end cover 9 are arranged in sequence. The first box body 1 is arranged between the first end cover 2 and the second end cover 3, and together with the first end cover 2 and the second end cover 3, a first oil chamber a is enclosed. The second box body 8 is arranged between the second end cover 3 and the third end cover 9, and together with the second end cover 3 and the third end cover 9, a second oil chamber b is enclosed. The second end cover 3 is provided with an oil hole connecting the first oil chamber a and the second oil chamber b. The integrated hydraulic power device also includes a booster airbag 10 and a hydraulic pump 11. The bag body of the booster airbag 10 is arranged in the first oil chamber a, and the hydraulic pump 11 is arranged in the second oil chamber b.

[0062] Specifically, an oil return passage connected to the first oil chamber a is opened on the first housing 1, the first end cover 2 or the second end cover 3. Preferably, the oil return passage is opened on the second end cover 3, and an oil outlet passage connected to the oil outlet of the hydraulic pump 11 is opened on the second end cover 3, the second housing 8 or the third end cover 9. Preferably, the third end cover 9 can be set as a control valve block, and the oil outlet passage is formed by the internal flow channel structure of the control valve block. The hydraulic pump 11 can be installed on the inner side surface of the third end cover 9 facing the second oil chamber b, and the driving motor for driving the hydraulic pump 11 can be installed on the outer side surface of the third end cover 9 facing away from the second oil chamber b. The third end cover 9 has a central through hole running through the inner and outer sides of the third end cover 9, and the power output shaft of the driving motor is connected to the hydraulic pump 11 through the central through hole.

[0063] During actual operation, the hydraulic pump 11 operates to absorb the hydraulic oil in the second oil chamber b and supply oil to the external power system through the oil outlet channel. At the same time, the bag body of the booster airbag 10 expands or contracts to maintain the oil pressure in the first oil chamber a at a normal value and to allow the hydraulic oil to fill the first oil chamber a, so that the hydraulic oil in the first oil chamber a can continuously and quickly replenish the hydraulic oil to the second oil chamber b through the oil hole, thereby ensuring that the hydraulic pump 11 can maintain smooth output of hydraulic oil.

[0064] In the integrated hydraulic power device of the present embodiment, the hydraulic oil tank has a first oil chamber a and a second oil chamber b which are separately arranged. The body of the booster airbag 10 and the hydraulic pump 11 are respectively arranged in the first oil chamber a and the second oil chamber b. With such arrangement, the first oil chamber a only needs to accommodate the body of the booster airbag 10. Compared with the oil chamber in the existing integrated hydraulic power device which needs to accommodate the body of the booster airbag and the hydraulic pump at the same time, the internal space of the first oil chamber a can be set to be smaller. During the expansion of the body of the booster airbag 10, part of the cavity wall of the first oil chamber a can contact the body of the booster airbag 10 to support the body of the booster airbag 10, thereby avoiding the problem that the body of the booster airbag 10 is continuously subjected to the large tension of the internal gas and is more easily damaged, thereby effectively improving the service life of the booster airbag 10.

[0065] In addition, isolating the body of the booster airbag 10 and the hydraulic pump 11 can prevent large particle impurities generated during the operation of the hydraulic pump 11 from wearing the body of the booster airbag 10 , further increasing the service life of the booster airbag 10 .

[0066] In addition, the second end cover 3, the first box body 1 and the first end cover 2 together form a first oil chamber a, and also together with the second box body 8 and the third end cover 9 to form a second oil chamber b. That is to say, the second end cover 3 serves as the cavity wall of the first oil chamber a and the second oil chamber b at the same time. The oil hole formed on the second end cover 3 can connect the first oil chamber a and the second oil chamber b. Such an arrangement makes the hydraulic oil tank have good structural compactness, which meets the requirements of compact structure, miniaturization and lightweight of the integrated hydraulic power device.

[0067] In this embodiment, the heat-conducting support assembly can also be used to connect the first end cover 2 and the second end cover 3 to fix the first box 1 between the first end cover 2 and the second end cover 3, and to connect the second end cover 3 and the third end cover 9 to fix the second box 8 between the second end cover 3 and the third end cover 9; in this way, the compactness of the structure can be further improved. Specifically, the heat-conducting support assembly may include a support rod 5, the support rod 5 is a screw with an external thread, the first end cover 2, the second end cover 3 and the third end cover 9 are respectively provided with connecting through holes, the support rod 5 passes through the connecting through holes of the first end cover 2, the second end cover 3 and the third end cover 9 in sequence, and the support rod 5 is screwed with a first nut, a second nut and a third nut, the first nut is located at one end of the support rod 5 and presses against the side of the first end cover 2 facing away from the second end cover 3, the second nut is located at the other end of the support rod 5 and presses against the side of the third end cover 9 facing away from the second end cover 3, and the third nut is located between the two ends of the support rod 5 and presses against the side of the second end cover 3 facing away from the first end cover 2. Such an arrangement enables the heat-conducting support assembly to connect the first end cover 2 and the second end cover 3 , and to connect the second end cover 3 and the third end cover 9 .

[0068] In one embodiment, the first box body 1 is cylindrical and its two ends are respectively connected to the first end cover 2 and the second end cover 3. Such a configuration can improve the strength and stability of the connection between the first box body 1 and the first end cover 2 and the second end cover 3.

[0069] Specifically, bosses are respectively provided on the facing sides of the first end cover 2 and the second end cover 3, and the two ends of the first box body 1 are respectively sleeved on the bosses of the first end cover 2 and the second end cover 3, or, annular grooves are respectively provided on the facing sides of the first end cover 2 and the second end cover 3, and the two ends of the first box body 1 are respectively embedded in the annular grooves of the first end cover 2 and the second end cover 3.

[0070] In one embodiment, a first sealing structure is provided between the two ends of the first box body 1 and the first end cover 2 and the second end cover 3. Such a configuration can effectively ensure the sealing of the connection between the first box body 1 and the first end cover 2 and the second end cover 3, and prevent the hydraulic oil from leaking from the connection.

[0071] Specifically, the first sealing structure may be a sealing ring or a sealing ring, or may be a sealing groove formed on the first end cover 2 and the second end cover 3, and the sealing groove is filled with a sealing member or a sealant.

[0072] In one embodiment, the second box body 8 is cylindrical and its two ends are respectively connected with the second end cover 3 and the third end cover 9. Such a configuration can improve the strength and stability of the second box body 8 and the second end cover 3 and the third end cover 9.

[0073] Specifically, bosses are respectively provided on the facing sides of the second end cover 3 and the third end cover 9, and the two ends of the second box body 8 are respectively mounted on the bosses of the second end cover 3 and the third end cover 9, or, annular grooves are respectively provided on the facing sides of the second end cover 3 and the third end cover 9, and the two ends of the second box body 8 are respectively embedded in the annular grooves of the second end cover 3 and the third end cover 9.

[0074] In one embodiment, a second sealing structure is provided between the two ends of the second box body 8 and the second end cover 3 and the third end cover 9. Such a configuration can effectively ensure the sealing of the connection between the second box body 8 and the second end cover 3 and the third end cover 9, and prevent the hydraulic oil from leaking from the connection.

[0075] Specifically, the second sealing structure may be a sealing ring or a sealing ring, or may be a sealing groove formed on the second end cover 3 and the third end cover 9, and the sealing groove is filled with a sealing member or a sealant.

[0076] In one embodiment, a one-way valve 12 is provided in the oil hole, the outlet end of the one-way valve 12 is connected to the first oil chamber a, and the inlet end of the one-way valve 12 is connected to the second oil chamber b. In this configuration, the one-way flow characteristic of the one-way valve 12 allows the hydraulic oil to flow only from the first oil chamber a to the second oil chamber b, and does not flow back from the second oil chamber b to the first oil chamber a, so that particles generated by the hydraulic pump 11 can be prevented from entering the first oil chamber a through the oil hole to wear the capsule body of the booster airbag 10.

[0077] Specifically, the one-way valve 12 may be a fungus-type valve, which has the advantages of simple structure, flexible operation and high reliability.

[0078] In one embodiment, the cavity wall surface of the first oil cavity a includes a spherical concave surface, and the inflation and deflation nozzle of the pressurized airbag 10 is connected to the spherical concave surface.

[0079] It can be understood that the spherical concave surface fits more closely with the inflated body of the pressurized airbag 10, effectively increasing the contact area between the wall of the first oil chamber a and the inflated body of the pressurized airbag 10, thereby providing better support for the body of the pressurized airbag 10, further weakening the effect of gas tension on the body of the pressurized airbag 10, and increasing the service life of the body of the pressurized airbag 10.

[0080] Specifically, the cavity wall surface of the first oil chamber a may include multiple spherical concave surfaces, and the number and arrangement of the spherical concave surfaces are set according to the shape of the bladder body of the boost airbag 10 and the structure of the first oil chamber a. For example, the bladder body of the boost airbag 10 is roughly elliptical, and the first oil chamber a is surrounded by the first box body 1, the boss provided on the first end cover 2 and the boss provided on the second end cover 3. The cavity wall surface of the first oil chamber a may include two spherical concave surfaces, which are respectively formed on the boss provided on the first end cover 2 and the boss provided on the second end cover 3 and are arranged opposite to each other. The inflation and deflation nozzle of the boost airbag 10 is connected to the boss provided on the first end cover 2. In this way, the entire cavity wall surface of the first oil chamber a is roughly adapted to the shape of the bladder body of the boost airbag 10. After the bladder body of the boost airbag 10 is expanded, the cavity wall surface of the first oil chamber a can be more fully in contact with the bladder body of the boost airbag 10 for more effective support.

[0081] The third exemplary embodiment of the present invention provides a working machine, which includes the above-mentioned integrated hydraulic power device. Obviously, the working machine of the present invention should also have all the technical effects brought by the above-mentioned integrated hydraulic power device, so it will not be repeated here.

[0082] The operating machinery of the present invention includes but is not limited to engineering machinery, agricultural machinery or operating robots, etc. The power of the operating machinery can be new energy batteries, fuel engines, hybrid devices or municipal electricity, etc.

[0083] In addition, the operating machinery of the utility model can be a new energy vehicle, such as a new energy car, a new energy crane, a new energy truck crane, a new energy mixer truck, a new energy pump truck, a new energy fire truck, a new energy road construction vehicle, a new energy sanitation vehicle, etc.

[0084] In the description of the present invention, 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0085] In the present invention, 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 one; 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 the present invention can be understood according to specific circumstances.

[0086] 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 utility model. 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.

[0087] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A hydraulic oil tank, characterized in that: The hydraulic oil tank comprises: A first housing (1); A heat-conducting support assembly, arranged on the outer peripheral side of the first box body (1); A plurality of heat dissipation fins (4) are respectively supported on the heat-conducting support assembly and are arranged in sequence along the axial direction of the first box body (1); the plurality of heat dissipation fins (4) are respectively in contact with the outer peripheral wall of the first box body (1) and can transfer heat to each other through the heat-conducting support assembly.

2. The hydraulic oil tank according to claim 1, characterized in that: The heat dissipation fin (4) is provided with a first through hole (c), and the heat dissipation fin (4) is sleeved on the heat-conducting support component through the first through hole (c).

3. The hydraulic oil tank according to claim 1, characterized in that: The heat dissipation fin (4) is provided with a second through hole (d), and is sleeved on the first box body (1) through the second through hole (d), and the inner hole wall of the second through hole (d) is in close contact with the outer peripheral wall of the first box body (1).

4. The hydraulic oil tank according to claim 2, characterized in that: The heat-conducting support assembly comprises a plurality of heat-conducting support members, and the plurality of heat-conducting support members are arranged at intervals around the outer peripheral wall of the first box body (1).

5. The hydraulic oil tank according to claim 4, characterized in that: The thermally conductive support member comprises: A support rod (5) connected to the first box (1); A heat conducting pipe (6) is sleeved on the support rod (5); Wherein, the heat dissipation fin (4) is sleeved on the heat conducting pipe (6) through the first through hole (c).

6. The hydraulic oil tank according to claim 1, characterized in that: The heat dissipation fins (4) are provided with raised portions (7), and two adjacent heat dissipation fins (4) are spaced apart by the alignment and abutment of their respective raised portions (7).

7. An integrated hydraulic power unit, characterized in that: The integrated hydraulic power unit comprises a hydraulic oil tank according to any one of claims 1 to 6.

8. The integrated hydraulic power device according to claim 7, characterized in that: The hydraulic oil tank further comprises a first end cover (2), a second end cover (3), a third end cover (9) and a second box body (8), wherein the first end cover (2), the second end cover (3) and the third end cover (9) are arranged in sequence and spaced apart from each other, the first box body (1) is arranged between the first end cover (2) and the second end cover (3), and together with the first end cover (2) and the second end cover (3) form a first oil chamber (a), the second box body (8) is arranged between the second end cover (3) and the third end cover (9), and together with the second end cover (3) and the third end cover (9) form a second oil chamber (b), and the second end cover (3) is provided with an oil hole connecting the first oil chamber (a) and the second oil chamber (b); The integrated hydraulic power device further comprises a pressurized airbag (10) and a hydraulic pump (11); the airbag body of the pressurized airbag (10) is arranged in the first oil chamber (a), and the hydraulic pump (11) is arranged in the second oil chamber (b).

9. The integrated hydraulic power device according to claim 8, characterized in that: A one-way valve (12) is provided in the oil hole, the inlet end of the one-way valve (12) is communicated with the first oil chamber (a), and the outlet end of the one-way valve (12) is communicated with the second oil chamber (b).

10. A working machine, characterized in that: The working machine comprises an integrated hydraulic power unit according to any one of claims 7 to 9.

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