Split type oil tank and hydraulic power system

Abstract

The application provides a split oil tank and a hydraulic power system. The split oil tank comprises a main oil tank, a sub-oil tank and a pipeline assembly. The main oil tank comprises a main tank body, a main air inlet, a main oil return port, a main balance oil port and a main oil suction port. The sub-oil tank comprises a sub-tank body, a sub-air inlet, a sub-oil return port, a sub-balance oil port and a sub-oil suction port. The main balance oil port is connected to the main tank body and is located at a preset height. The sub-balance oil port is connected to the sub-tank body and is located below the preset height. The pipeline assembly comprises an air inlet pipeline, a balance pipeline, a main oil return pipeline, a sub-oil return pipeline, a main oil suction pipeline and a sub-oil suction pipeline. Compared with a single oil tank, the split oil tank has certain flexibility in space and can be applied to engineering machinery with limited installation space. The overall structure of the hydraulic power system is more compact. Compared with an oil tank with a special shape, the split oil tank realizes the supplement function of the effective volume of the oil tank and can better meet the pressure requirements of the hydraulic power system.

Description

Technical Field

[0001] This invention relates to the field of hydraulic equipment technology, and more specifically, to a split-type oil tank and hydraulic power system. Background Technology

[0002] Traditional fuel tanks are typically single-unit structures. When installation space is limited, existing technologies often solve this by adapting the fuel tank to an irregular shape. For example, on some engineering vehicles, the hydraulic system's fuel tank is shared with the vehicle frame's steel structure to make full use of space. However, such designs require consideration of the fuel tank's load-bearing capacity and place high demands on the overall vehicle layout. This could potentially lead to excessive load on the fuel tank, causing damage and problems such as oil leaks. Summary of the Invention

[0003] The problem this invention addresses is: how to improve the applicability of fuel tanks in different installation spaces.

[0004] To address the aforementioned problems, this invention provides a split-type oil tank, comprising a main oil tank, a secondary oil tank, and piping assemblies. The main oil tank includes a main tank body, a main vent, a main return oil port, a main balancing oil port, and a main suction oil port. The secondary oil tank includes a secondary tank body, a secondary vent, a secondary return oil port, a secondary balancing oil port, and a secondary suction oil port. The main vent and the secondary vent are respectively connected to the main tank body and the secondary tank body, and are respectively above the liquid levels of the main tank body and the secondary tank body. The main return oil port and the secondary return oil port are respectively connected to the main tank body and the secondary tank body, and are respectively above the liquid levels of the main tank body and the secondary tank body. The main suction oil port and the secondary suction oil port are respectively connected to the main tank body and the secondary tank body. At their respective bottom ends, the main balancing oil port is connected to the main housing and located at a preset height within the main housing. The secondary balancing oil port is connected to the secondary housing, and its height within the secondary housing is lower than the preset height. The piping assembly includes a venting pipe, a balancing pipe, a main return oil pipe, a secondary return oil pipe, a main suction oil pipe, and a secondary suction oil pipe. The main return oil pipe, the secondary return oil pipe, the main suction oil pipe, and the secondary suction oil pipe are respectively connected to the main return oil port, the secondary return oil port, the main suction oil port, and the secondary suction oil port. The main balancing oil port and the secondary balancing oil port are respectively connected to the balancing pipe. The main vent and the secondary vent are connected through the venting pipe.

[0005] Optionally, the main oil suction line is connected to the auxiliary oil suction line.

[0006] Optionally, the main oil suction line includes a first oil suction line and a second oil suction line that are interconnected, the second oil suction line being connected to the auxiliary oil suction line, and the first oil suction line and the second oil suction line being connected to the main oil suction port.

[0007] Optionally, the main oil tank further includes a through-type oil suction box that communicates with the main tank body, and the two main oil suction ports are disposed on the through-type oil suction box and are respectively connected to the first oil suction pipe and the second oil suction pipe.

[0008] Optionally, the main oil tank further includes a return oil confluence block communicating with the main tank body, the main return oil port being disposed in the return oil confluence block and communicating with the main return oil pipeline.

[0009] Optionally, it also includes a magnetic rod filter, wherein the magnetic rod filter is respectively provided on the main tank and the auxiliary tank, and the magnetic rod filter on the main tank and the auxiliary tank extends into the liquid surface of the main tank and the auxiliary tank, respectively.

[0010] The present invention also provides a hydraulic power system, including a split-type oil tank as described above, and a motor pump assembly, wherein the motor pump assembly includes a motor and a hydraulic pump driven and connected to the motor, and the oil suction end of the hydraulic pump is connected to the main oil suction pipeline and the auxiliary oil suction pipeline of the split-type oil tank.

[0011] Optionally, it also includes a heat dissipation assembly, which includes two water-cooled radiators and two oil return cooling pipes. The two water-cooled radiators are respectively installed on the two oil return cooling pipes, and the two oil return cooling pipes are respectively connected to the main body and the auxiliary body of the split oil tank.

[0012] Optionally, it also includes a high-pressure filter and an oil supply line, wherein the high-pressure filter is connected to the oil supply end of the hydraulic pump, and the oil supply line is connected to the high-pressure filter.

[0013] Optionally, it also includes a pressure sensor and a pressure tapping line connected to the pressure sensor, the pressure tapping line being in communication with the high-pressure filter.

[0014] In the split-type oil tank of this invention, the main tank and the auxiliary tank can be designed with different positions and structures according to the needs of the installation space. The return process of hydraulic oil is realized through the main return oil pipeline, the main return oil port, the auxiliary return oil pipeline, and the auxiliary return oil port (which can be realized by an oil pump). The suction process of hydraulic oil is realized through the main suction oil pipeline, the main suction oil port, the auxiliary suction oil pipeline, and the auxiliary suction oil port. Compared with the single-unit oil tank design, the split-type oil tank of this invention has a certain degree of flexibility in space. The main oil tank and the auxiliary oil tank can be applied to engineering machinery with limited installation space by adaptive and reasonable arrangement. This makes the overall structure of the hydraulic power system formed by the split-type oil tank more compact. Compared with the irregular structure oil tank, the split-type oil tank, through the cooperation of the auxiliary oil tank and the main oil tank, realizes the function of supplementing the effective volume of the oil tank, which can better meet the pressure requirements of the hydraulic power system. Furthermore, the main tank and the auxiliary tank of this invention are connected by a main vent, an auxiliary vent, and a vent pipe to achieve internal gas communication, thereby balancing the air pressure in the main tank and the auxiliary tank. This is beneficial for the oil suction process of the split-type oil tank and achieves a more stable hydraulic power transmission function. In addition, the main balancing oil port is set at a preset height in the main tank, and the auxiliary balancing oil port is set at a position below the preset height in the auxiliary tank. This allows the main tank to meet a larger oil suction flow requirement than the auxiliary tank (correspondingly, the auxiliary tank can meet a larger oil return flow requirement than the main tank). When the oil suction flow is large and the liquid level in the main tank is lower than that in the auxiliary tank, the higher pressure at the auxiliary balancing oil port causes some hydraulic oil to enter the main tank from the auxiliary tank to balance the liquid level, thereby ensuring the stability of the split-type oil tank in the process of providing hydraulic power.

[0015] The hydraulic power system of this invention connects the oil suction end of the hydraulic pump to the main and auxiliary oil suction lines of a split-type oil tank to provide hydraulic power to subsequent hydraulic actuators. It also has all the advantages of the split-type oil tank mentioned above. On the one hand, compared with a single-unit oil tank, it can adapt to the installation space more flexibly and achieve a more compact overall structure. On the other hand, compared with an irregularly shaped oil tank, the main and auxiliary oil tanks achieve effective volume replenishment. Furthermore, the structural design of the venting line and the equalization line ensures that the pressure of the main and auxiliary oil tanks is balanced and stable, guaranteeing the supply of hydraulic power. It can be applied to most engineering machinery. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the split-type fuel tank of the present invention;

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the main fuel tank of the present invention;

[0018] Figure 3 This is a three-dimensional structural schematic diagram of the auxiliary fuel tank of the present invention;

[0019] Figure 4 This is a three-dimensional structural schematic diagram of the hydraulic power system of the present invention;

[0020] Figure 5 This is a schematic diagram of the hydraulic power system of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Main oil tank; 11. Main tank body; 12. Main vent; 13. Main return oil port; 14. Main equalization oil port; 15. Main suction port; 16. Through-type suction box; 17. Return oil confluence block; 2. Auxiliary oil tank; 21. Auxiliary tank body; 22. Auxiliary vent; 23. Auxiliary return oil port; 24. Auxiliary equalization oil port; 25. Auxiliary suction port; 3. Piping assembly; 31. Vent pipe; 32. Equalization pipe; 33. Main return oil pipe; 34. 35. Secondary oil return line; 35. Main oil suction line; 351. First oil suction line; 352. Second oil suction line; 36. Secondary oil suction line; 4. Magnetic rod filter; 100. Motor pump set; 101. Motor; 102. Hydraulic pump; 200. Heat dissipation assembly; 201. Water-cooled radiator; 202. Oil return cooling line; 300. High pressure filter; 400. Oil supply line; 500. Pressure sensor; 600. Pressure tapping line. Detailed Implementation

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] It should be noted that in the XYZ coordinate system provided herein, the positive X-axis represents the right, and the negative X-axis represents the left; the positive Y-axis represents the rear, and the negative Y-axis represents the front; the positive Z-axis represents the top, and the negative Z-axis represents the bottom. Furthermore, it should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein.

[0025] This invention provides a split-type oil tank, comprising a main oil tank 1, a secondary oil tank 2, and a piping assembly 3. The main oil tank 1 includes a main tank body 11, a main vent 12, a main return oil port 13, a main equalization oil port 14, and a main suction oil port 15. The secondary oil tank 2 includes a secondary tank body 21, a secondary vent 22, a secondary return oil port 23, a secondary equalization oil port 24, and a secondary suction oil port 25. The main vent 12 and the secondary vent 22 are respectively connected to the main tank. The main tank 11 and the auxiliary tank 21 are respectively above the liquid levels of the main tank 11 and the auxiliary tank 21. The main oil return port 13 and the auxiliary oil return port 23 are respectively connected to the main tank 11 and the auxiliary tank 21, and are respectively above the liquid levels of the main tank 11 and the auxiliary tank 21. The main oil suction port 15 and the auxiliary oil suction port 25 are respectively connected to the bottom of the main tank 11 and the auxiliary tank 21. The main balancing oil port 14 is connected to the main housing 11 and located at a preset height within the main housing 11. The secondary balancing oil port 24 is connected to the secondary housing 21 and its height within the secondary housing 21 is lower than the preset height. The pipeline assembly 3 includes a venting pipeline 31, a balancing pipeline 32, a main return oil pipeline 33, a secondary return oil pipeline 34, a main suction oil pipeline 35, and a secondary suction oil pipeline 36. The main return oil pipeline 33, the secondary return oil pipeline 34, the main suction oil pipeline 35, and the secondary suction oil pipeline 36 are respectively connected to the main return oil port 13, the secondary return oil port 23, the main suction oil port 15, and the secondary suction oil port 25. The main balancing oil port 14 and the secondary balancing oil port 24 are respectively connected to the balancing pipeline 32. The main vent 12 and the secondary vent 22 are connected through the venting pipeline 31.

[0026] Specifically, in combination Figures 1 to 3 As shown, the split-type oil tank consists of a main oil tank 1, an auxiliary oil tank 2, and a piping assembly 3. Under normal operating conditions, the main tank 11 and the auxiliary tank 21 should contain hydraulic oil at the same level. Multiple main return ports 13 and multiple auxiliary return ports 23 are respectively installed on the top wall of the main tank 11 and the top wall of the auxiliary tank 21, and are connected to multiple main return lines 33 and multiple auxiliary return lines 34 (each main return line 33 and auxiliary return line 34 can be connected to the corresponding hydraulic actuator as needed). The bottom walls of both the main housing 11 and the auxiliary housing 21 can be designed as sloping structures according to the needs of the installation space. This allows the hydraulic oil flowing from the main return port 13 and the auxiliary return port 23 on the top wall to have better flow through the sloping bottom walls (in this embodiment, the bottom wall of the main housing 11 is designed as a sloping structure, and the bottom wall of the auxiliary housing 21 is designed as a flat structure, based on the actual installation space). A main vent 12 and an auxiliary vent 22 are also respectively provided on the top walls of the main housing 11 and the auxiliary housing 21 (in conjunction with...). Figure 3As shown, in the auxiliary oil tank 2, the auxiliary vent 22 and the auxiliary return oil port 23 are integrally connected to form a three-way pipe structure, and the two are connected through the vent pipe 31; the main balancing oil port 14 is set on the side wall of the main tank 11 and is located at a preset height, and the auxiliary balancing oil port 24 is set on the side wall of the auxiliary tank 21 and is set below the preset height (the preset height is the vertical distance from the lowest point of the bottom wall of the main tank 11 to a certain point inside the main tank 11, and its value should be greater than zero and less than the liquid level height of the main tank 11, so that the main balancing oil port 14 is located below the hydraulic oil level inside the main tank 11, and correspondingly, the auxiliary balancing oil port 24 is set below the preset height). The main balancing oil port 14 and the secondary balancing oil port 24 are connected by a balancing pipeline 32. A main suction port 15 and a secondary suction port 25 are also respectively provided on the main housing 11 and the secondary housing 21 (preferably, the main suction port 15 and the secondary suction port 25 can be located at the lowest point near the bottom wall of the main housing 11 and the secondary housing 21 to ensure pressure during the oil suction process of the split-type oil tank). When this split-type oil tank is used in equipment such as a hydraulic power station, it can be connected to the corresponding oil pump through the main suction pipeline 35 and the secondary suction pipeline 36 to realize the function of hydraulic power supply. Furthermore, in practical applications, such as in a hydraulic power station, it can be combined with… Figure 5 As shown, the corresponding hydraulic control components are connected to the split-type oil tank of the present invention to better realize the corresponding functions. Among them, P1 to P4 are pressure oil outlets on the oil supply line 400, Ls1 to Ls4 are load-sensitive ports, Tc1 to Tc2 are cooling oil return ports of the return oil cooling line 202, Wo-1 to Wo-2 are water outlets of the water system corresponding to the heat dissipation component 200, and Wi is water inlet of the water system corresponding to the heat dissipation component 200. Some of the structures will be described later, and are only used as examples to illustrate the function of the split-type oil tank.

[0027] It should be noted that the structures of the main enclosure 11 and the auxiliary enclosure 21 can be adapted to meet specific needs. Depending on installation space limitations, the relative positions of the auxiliary enclosure 21 and the main enclosure 11 can also be adjusted (e.g., by combining...). Figure 1 As shown, the main tank 11 is located on one side of the auxiliary tank 21 along the positive Y-axis in the figure, and is biased towards the side of the auxiliary tank 21 along the positive X-axis in the figure. In this way, when this split-type oil tank is installed on some relatively compact engineering machinery, it will not interfere with the installation space of other structures such as electrical control cabinets and valve boxes. No specific restrictions are made here. In addition, for example, the scheme of setting cleaning covers, liquid level and oil temperature gauges, liquid level float switches, hydraulic oil filling ports and other common components on the main tank 11 and auxiliary tank 21 is something that those skilled in the art can think of. No specific restrictions are made here.

[0028] In addition, the preset height in this article refers to the vertical distance from the lowest point of the bottom wall of the main housing 11 to a certain point inside the main housing 11. Its value should be greater than zero and less than the liquid level height of the main housing 11, so that the main balancing oil port 14 is located below the hydraulic oil level inside the main housing 11. Correspondingly, the height of the secondary balancing oil port 24 is lower than the preset height setting.

[0029] In the split-type oil tank of this invention, the main tank 11 and the auxiliary tank 21 can be designed with different positions and structures according to the needs of the installation space. The hydraulic oil return process is achieved through the main return oil pipeline 33, the main return oil port 13, the auxiliary return oil pipeline 34, and the auxiliary return oil port 23 (which can be achieved by an oil pump). The hydraulic oil suction process is achieved through the main suction oil pipeline 35, the main suction oil port 15, the auxiliary suction oil pipeline 36, and the auxiliary suction oil port 25. Compared with a single-unit oil tank design, the split-type oil tank of this invention has a certain degree of spatial flexibility. With the main tank 1 and the auxiliary tank 2 arranged adaptively and reasonably, it can be applied to engineering machinery with limited installation space, making the overall structure of the hydraulic power system formed by the split-type oil tank more compact. Compared with irregularly shaped oil tanks, this split-type oil tank, through the cooperation of the auxiliary tank 2 and the main tank 1, achieves the function of supplementing the effective volume of the oil tank, and can better meet the pressure requirements of the hydraulic power system. Furthermore, this invention… The main tank 11 and the auxiliary tank 21 are connected by the main vent 12, the auxiliary vent 22 and the vent pipe 31 to achieve internal gas communication, thereby balancing the air pressure of the main tank 11 and the auxiliary tank 21. This is beneficial to the oil suction process of the split oil tank and achieves a more stable hydraulic power transmission function. In addition, the main equalizing oil port 14 is set at a preset height of the main tank 11 and the auxiliary equalizing oil port 24 is set at a position below the preset height of the auxiliary tank 21. This allows the main oil tank 1 to meet a larger oil suction flow requirement than the auxiliary oil tank 2 (correspondingly, the auxiliary oil tank 2 can meet a larger oil return flow requirement than the main oil tank 1). When the oil suction flow is large and the liquid level in the main tank 11 is lower than the liquid level in the auxiliary tank 21, due to the higher pressure at the auxiliary equalizing oil port 24, some hydraulic oil enters the main tank 11 from the auxiliary tank 21 to balance the liquid level of the two tanks, thereby ensuring the stability of the split oil tank in the process of providing hydraulic power.

[0030] Optionally, the main oil suction line 35 and the auxiliary oil suction line 36 can be connected by a pipeline. In this way, the main tank 11 and the auxiliary tank 21 achieve air pressure balance, liquid level balance, and oil suction balance through the venting line 31, the equalization line 32, and the interconnected main oil suction line 35 and auxiliary oil suction line 36, respectively, so that the liquid level between the main tank 11 and the auxiliary tank 21 is consistent, ensuring the stability of the hydraulic power supply process of the split oil tank.

[0031] Optionally, the main oil suction line 35 includes a first oil suction line 351 and a second oil suction line 352 that are interconnected. The second oil suction line 352 is connected to the auxiliary oil suction line 36, and the first oil suction line 351 and the second oil suction line 352 are connected to the main oil suction port 15.

[0032] Specifically, in combination Figure 1 As shown, the first oil suction pipe 351 and the second oil suction pipe 352 are located at the two ends of the through-type oil suction box 16 (which will be introduced later; other connection structures can also be used here) along the positive and negative directions of the X-axis in the figure, and are connected to the main box 11 through the main oil suction port 15. Then, the second oil suction pipe 352 is connected to the auxiliary oil suction pipe 36 through a pipe, thus realizing the connection between the main oil suction pipe 35 and the auxiliary oil suction pipe 36.

[0033] Thus, the main oil suction pipe 35, composed of the first oil suction pipe 351 and the second oil suction pipe 352, can meet the large oil suction flow requirement of the main oil tank 1. At the same time, the second oil suction pipe 352 is connected to the auxiliary oil suction pipe 36 to achieve the function of balanced oil suction between the main tank 11 and the auxiliary tank 21.

[0034] Optionally, the main oil tank 1 further includes a through-type oil suction box 16 connected to the main tank body 11, and two main oil suction ports 15 are disposed on the through-type oil suction box 16 and are respectively connected to the first oil suction pipe 351 and the second oil suction pipe 352.

[0035] Specifically, in combination Figure 1 and Figure 2 As shown, the through-type oil suction box 16 is located on the end face of the main housing 11 along the positive Y-axis in the figure, and is located near the lowest point of the bottom wall of the inclined structure of the main housing 11. The two main oil suction ports 15 are respectively located at the two ends of the through-type oil suction box 16 along the positive and negative X-axis in the figure. The through-type cavity inside the through-type oil suction box 16 is connected to the main housing 11. In general, the through-type oil suction box 16 can also be designed with some filters of the prior art as needed to ensure the smooth flow of hydraulic oil in each pipeline.

[0036] Thus, the structure of the through-type oil suction box 16 facilitates the connection of the first oil suction pipe 351 and the second oil suction pipe 352 with the main oil suction port 15.

[0037] Optionally, the main oil tank 1 further includes a return oil confluence block 17 connected to the main tank body 11, and the main return oil port 13 is disposed on the return oil confluence block 17 and connected to the main return oil pipeline 33.

[0038] Specifically, in combination Figure 1 and Figure 2As shown, the return oil confluence block 17 is set on the top wall of the main housing 11, and multiple main return oil ports 13 are provided on both sides of the X-axis in the figure. Each main return oil port 13 corresponds to a different hydraulic actuator.

[0039] Thus, the structure of the return oil confluence block 17 facilitates the setting of multiple main return oil ports 13, so that the pressure of the hydraulic pipelines corresponding to the multiple main return oil ports 13 is independent of each other, ensuring the pressure of the hydraulic actuators corresponding to the main return oil ports 13.

[0040] Optionally, combined Figures 1 to 3 As shown, it also includes a magnetic rod filter 4. The magnetic rod filter 4 is respectively provided on the main tank 11 and the auxiliary tank 21. The magnetic rod filter 4 on the main tank 11 and the auxiliary tank 21 extends into the liquid surface of the main tank 11 and the auxiliary tank 21, respectively.

[0041] The present invention also provides a hydraulic power system, including a split-type oil tank as described above, and a motor pump assembly 100. The motor pump assembly 100 includes a motor 101 and a hydraulic pump 102 driven and connected to the motor 101. The oil suction end of the hydraulic pump 102 is connected to the main oil suction pipe 35 and the auxiliary oil suction pipe 36 of the split-type oil tank.

[0042] Specifically, in combination Figure 4 As shown, the main oil suction pipe 35 consists of a first oil suction pipe 351 and a second oil suction pipe 352. Two motor pump sets 100 are respectively connected to the first oil suction pipe 351 and the second oil suction pipe 352. One motor pump set 100 includes a motor 101 and two hydraulic pumps 102. The first oil suction pipe 351 and the second oil suction pipe 352 are each provided with two pipe flange interfaces to communicate with the oil suction end of the hydraulic pump 102. The oil supply end of the hydraulic pump 102 can be connected to the subsequent hydraulic actuator as needed.

[0043] The hydraulic power system of the present invention connects the oil suction end of the hydraulic pump 102 to the main oil suction pipe 35 and the auxiliary oil suction pipe 36 of the split oil tank to provide hydraulic power to the subsequent hydraulic actuators. It also has all the beneficial effects of the split oil tank mentioned above. On the one hand, compared with the single oil tank, it can adapt to the installation space more flexibly and achieve a more compact overall structure. On the other hand, compared with the irregularly shaped oil tank, the main oil tank 1 and the auxiliary oil tank 2 achieve the effect of effective volume supplementation. Furthermore, the structural design of the vent pipe 31, the equalization pipe 32 and other structures ensures that the pressure of the main oil tank 1 and the auxiliary oil tank 2 is balanced and stable, thus ensuring the supply of hydraulic power and making it applicable to most engineering machinery.

[0044] Optionally, it also includes a heat dissipation assembly 200, which includes two water-cooled radiators 201 and two oil return cooling pipes 202. The two water-cooled radiators 201 are respectively mounted on the two oil return cooling pipes 202, and the two oil return cooling pipes 202 are respectively connected to the main body 11 and the auxiliary body 21 of the split-type oil tank, and can be combined Figure 5 As shown, the water-cooled radiator 201 and the return oil cooling pipe 202 are connected to the hydraulic power system, and the water-cooling system (including pressure reducing valve, hydraulic valve, etc.) of the water-cooled radiator 201 is arranged accordingly. The two return oil cooling pipes 202 are connected in parallel to the main return oil pipe 33 and the auxiliary return oil pipe 34, respectively, and the end of each pipe that is away from the main housing 11 and the auxiliary housing 21 is used to communicate with the corresponding hydraulic actuator.

[0045] Thus, the hydraulic oil returning to the main housing 11 and the auxiliary housing 21 in the two return oil cooling pipes 202 is cooled by water through two water-cooled radiators 201, which has a good cooling effect on the high temperature hydraulic oil.

[0046] Optionally, it also includes a high-pressure filter 300 and an oil supply line 400, wherein the high-pressure filter 300 is connected to the oil supply end of the hydraulic pump 102, and the oil supply line 400 is connected to the high-pressure filter 300.

[0047] Specifically, in combination Figure 1 and Figure 4 As shown, the high-pressure filter 300 can adopt the structure in the prior art. The high-pressure filter 300 shown in the figure is formed by connecting two filter bodies and a connecting block together. The high-pressure filter 300 is installed on the main housing 11. The oil supply end of the hydraulic pump 102 is connected to the high-pressure filter 300 through a pipeline. After being filtered, the hydraulic oil enters the oil supply pipeline 400. The oil supply pipeline 400 is used to connect with the subsequent hydraulic actuators.

[0048] In this way, impurities in the hydraulic oil can be further removed by the high-pressure filter 300, thereby extending the life of the hydraulic power system and the corresponding hydraulic actuators.

[0049] Optionally, combined Figure 2 , Figure 4 and Figure 5 As shown, it also includes a pressure sensor 500 and a pressure tapping line 600 connected to the pressure sensor 500. The pressure tapping line 600 is connected to the high-pressure filter 300. In this way, hydraulic oil can be guided to the pressure sensor 500 through the pressure tapping line 600 to obtain the corresponding pressure value, which facilitates the monitoring of the pressure of the hydraulic power system by the worker or the corresponding detection system, ensuring the stable supply of hydraulic power.

[0050] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A split-type fuel tank, characterized in that, Includes a main fuel tank (1), an auxiliary fuel tank (2), and piping assemblies (3). The main oil tank (1) includes a main tank body (11), a main vent (12), a main return oil port (13), a main equalization oil port (14), and a main suction oil port (15). The auxiliary oil tank (2) includes an auxiliary tank body (21), an auxiliary vent (22), an auxiliary return oil port (23), an auxiliary equalization oil port (24), and an auxiliary suction oil port (25). The main vent (12) and the auxiliary vent (22) are respectively connected to the main tank body (11) and the auxiliary tank body (21), and are respectively higher than the liquid level of the main tank body (11) and the liquid level of the auxiliary tank body (21). The main return oil port (13) and the auxiliary return oil port (24) are respectively connected to the main tank body (11) and the auxiliary tank body (25). The main oil inlet (15) and the auxiliary oil inlet (25) are respectively connected to the main tank (11) and the auxiliary tank (21), and are respectively higher than the liquid level of the main tank (11) and the auxiliary tank (21). The main oil inlet (15) and the auxiliary oil inlet (25) are respectively connected to the bottom end of the main tank (11) and the auxiliary tank (21). The main balancing oil inlet (14) is connected to the main tank (11) and is located at a preset height inside the main tank (11). The auxiliary balancing oil inlet (24) is connected to the auxiliary tank (21), and the height of the auxiliary balancing oil inlet (24) inside the auxiliary tank (21) is lower than the preset height. The pipeline assembly (3) includes a venting pipeline (31), a balancing pipeline (32), a main return oil pipeline (33), a secondary return oil pipeline (34), a main suction oil pipeline (35), and a secondary suction oil pipeline (36). The main return oil pipeline (33), the secondary return oil pipeline (34), the main suction oil pipeline (35), and the secondary suction oil pipeline (36) are respectively connected to the main return oil port (13), the secondary return oil port (23), the main suction oil port (15), and the secondary suction oil port (25). The main balancing oil port (14) and the secondary balancing oil port (24) are respectively connected to the balancing pipeline (32). The main vent (12) and the secondary vent (22) are connected through the venting pipeline (31).

2. The split-type fuel tank according to claim 1, characterized in that, The main oil suction line (35) is connected to the auxiliary oil suction line (36).

3. The split-type fuel tank according to claim 2, characterized in that, The main oil suction line (35) includes a first oil suction line (351) and a second oil suction line (352) that are interconnected. The second oil suction line (352) is connected to the auxiliary oil suction line (36). The first oil suction line (351) and the second oil suction line (352) are connected to the main oil suction port (15).

4. The split-type fuel tank according to claim 3, characterized in that, The main oil tank (1) also includes a through-type oil suction box (16) that communicates with the main tank body (11). Two main oil suction ports (15) are provided on the through-type oil suction box (16) and are respectively connected to the first oil suction pipe (351) and the second oil suction pipe (352).

5. The split-type fuel tank according to claim 1, characterized in that, The main oil tank (1) also includes a return oil confluence block (17) connected to the main tank body (11), and the main return oil port (13) is located on the return oil confluence block (17) and connected to the main return oil pipeline (33).

6. The split-type fuel tank according to claim 1, characterized in that, It also includes a magnetic rod filter (4), which is provided on the main housing (11) and the auxiliary housing (21), respectively. The magnetic rod filter (4) on the main housing (11) and the auxiliary housing (21) extends into the liquid surface of the main housing (11) and the auxiliary housing (21), respectively.

7. A hydraulic power system, comprising a split-type oil tank as described in any one of claims 1 to 6, characterized in that, It also includes a motor pump assembly (100), which includes a motor (101) and a hydraulic pump (102) driven and connected to the motor (101). The oil suction end of the hydraulic pump (102) is connected to the main oil suction pipe (35) and the auxiliary oil suction pipe (36) of the split oil tank.

8. The hydraulic power system according to claim 7, characterized in that, It also includes a heat dissipation assembly (200), which includes two water-cooled radiators (201) and two oil return cooling pipes (202). The two water-cooled radiators (201) are respectively installed on the two oil return cooling pipes (202), and the two oil return cooling pipes (202) are respectively connected to the main body (11) and the auxiliary body (21) of the split oil tank.

9. The hydraulic power system according to claim 7, characterized in that, It also includes a high-pressure filter (300) and an oil supply line (400), wherein the high-pressure filter (300) is connected to the oil supply end of the hydraulic pump (102), and the oil supply line (400) is connected to the high-pressure filter (300).

10. The hydraulic power system according to claim 9, characterized in that, It also includes a pressure sensor (500) and a pressure tapping line (600) connected to the pressure sensor (500), the pressure tapping line (600) being connected to the high-pressure filter (300).

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