Oil tank for hydraulic system of shield tunneling machine

Abstract

The utility model discloses an oil tank for a shield tunneling machine hydraulic system, which comprises an oil tank body, the oil tank body comprises an oil suction and return cavity and a public oil suction cavity which are mutually isolated and parallel, an oil suction filter communicated with the public oil suction cavity is arranged in the oil suction and return cavity, and the oil suction and return cavity, the oil suction filter and the public oil suction cavity form a turn-back type flow path. According to the oil tank for the shield tunneling machine hydraulic system, the oil suction port is prevented from being close to the oil return cavity, it can be guaranteed that working media fully flow in the oil tank, and heat dissipation, filtering and impurity precipitation of the working media are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of oil tank technology, and in particular to an oil tank for a tunnel boring machine hydraulic system. Background Technology

[0002] Currently, oil tanks are commonly found in industrial or mobile hydraulic equipment. Oil tanks can supply or return oil to hydraulic equipment, and play a role in storing oil and dissipating heat from the oil.

[0003] Existing hydraulic systems typically use oil tanks with internal vertical baffles, creating interconnected suction and return zones. A hydraulic pump draws oil from the tank's suction zone and outputs pressurized oil to a motor or cylinder. The motor or cylinder then drives the mechanical equipment to perform the required actions. The returned or drained oil, after passing through hydraulic valves, flows back to the return zone via pipelines.

[0004] In the hydraulic system of a tunnel boring machine (TBM), there are numerous hydraulic pumps, typically arranged side-by-side at the bottom of the oil tank. Therefore, the corresponding oil suction ports at the bottom of the tank must be distributed dispersedly, and the area covered by the oil suction zone is relatively narrow compared to the overall tank space. As the number of hydraulic pumps increases, the distribution space increases linearly, eventually exceeding the oil suction zone of the tank. Consequently, multiple oil supply lines need to be installed outside the tank to connect to the pump suction ports. This arrangement occupies a significant amount of installation space, creates a chaotic oil supply line layout, increases the risk of pipeline damage, and poses safety hazards to the hydraulic system. Furthermore, external oil suction filters are required at the pump suction ports, further occupying considerable installation space. This results in a very crowded layout at the bottom layer of the hydraulic trolley (pump assembly layer), hindering installation and maintenance, and potentially preventing further layout adjustments.

[0005] like Figure 5 As shown, the oil tank requires a large number of external oil supply lines, which will occupy a lot of installation space. As the number of hydraulic pumps increases, the space requirement will increase exponentially. At the same time, the complexity of the oil supply lines will also increase exponentially. The redundant layout of the oil supply lines will increase the difficulty of subsequent maintenance and increase the risk of being accidentally broken.

[0006] For this type of oil tank, the hydraulic oil flow path is: return oil zone – baffle – suction filter – hydraulic pump suction port. On the one hand, because some suction ports are close to the return oil zone, while the rest are far away, it is not conducive to the internal circulation, heat dissipation, and sedimentation of the hydraulic oil. On the other hand, the hydraulic pump, which is far from the suction zone, requires a longer oil supply line, increasing the difficulty and cost of installing the oil supply line, and resulting in low oil suction efficiency. Utility Model Content

[0007] The utility model wants to solve the technical problem: the utility model provides an oil tank for shield machine hydraulic system, avoids setting up the oil suction port close to the oil return cavity, can guarantee that the working medium fully flows in the oil tank, is favorable to the heat dissipation, filtration and impurity deposition of working medium.

[0008] The utility model adopts the technical scheme that a kind of oil tank for shield machine hydraulic system, including oil tank body, the oil tank body includes mutually isolated and parallel suction oil cavity and public suction oil cavity, suction oil filter is equipped in the suction oil cavity and is communicated with public suction oil cavity, suction oil cavity, suction oil filter and public suction oil cavity form the flow path of return type.

[0009] Further, in order to increase the coverage area of the public suction oil cavity, the public suction oil cavity is located at the lower side of the suction oil cavity, and the public suction oil cavity and the suction oil cavity are separated by a horizontal partition.

[0010] Further, in order to avoid equipping the suction oil filter for each suction oil pump, the suction oil cavity is divided into a suction oil cavity and a return oil cavity by a vertical partition, and the suction oil filter is arranged in the suction oil cavity.

[0011] Further, in order to realize the use of multiple suction oil filters at the same time, multiple suction oil filters are uniformly distributed in the suction oil cavity along the horizontal direction, and the lower end of the suction oil filter penetrates the horizontal partition into the public suction oil cavity.

[0012] Further, in order to filter the working medium entering the suction oil cavity from the return oil cavity, a plurality of return oil holes are provided on the vertical partition to communicate the suction oil cavity and the return oil cavity, and a filter screen is arranged in the return oil hole.

[0013] Further, in order to prolong the flow path of the working medium in the suction oil cavity and the public suction oil cavity, the suction oil cavity and the public suction oil cavity are arranged along the length direction of the oil tank body.

[0014] Further, the horizontal partition is an L-shaped partition, and the horizontal partition is connected with the side wall of the oil tank body to separate the oil tank body into the suction oil cavity and the public suction oil cavity.

[0015] Further, the vertical partition is fixed between the horizontal partition and the oil tank body.

[0016] Further, in order to facilitate communication with the external oil supply pipeline and simplify the structure of the oil supply pipeline, a plurality of oil suction ports are provided on the bottom of the oil tank body along the length direction and communicated with the public suction oil cavity, and each oil suction port is connected with the hydraulic pump through the oil supply pipeline.

[0017] Further, in order to realize the maintenance of the public suction oil cavity, a plurality of detection doors are arranged at intervals in the length direction of the public suction oil cavity.

[0018] Compared with the prior art, the oil tank for the shield machine hydraulic system has the beneficial effects that:

[0019] 1、The oil tank for the shield machine hydraulic system adopts the oil suction cavities arranged along the length direction and the common oil suction cavity to increase the flow path of the working medium, avoids the oil suction port being close to the oil return cavity, prolongs the flow path of the working medium, and thus improves the heat dissipation, filtration and impurity precipitation effects of the working medium.

[0020] 2、The oil tank for the shield machine hydraulic system arranges multiple oil suction filters in the oil suction area, and makes the outlet end of the oil suction filter directly pass through the transverse partition plate and be communicated with the common oil suction cavity, so that it is not necessary to separately equip each hydraulic pump with an independent oil suction filter, the working medium is filtered through the oil suction filter in the oil suction cavity, all the oil suction filters are in the synchronous working state when the hydraulic system works, the utilization rate of the oil suction filter is improved, the installation difficulty of the oil suction filter is reduced, the installation space is effectively saved, and the same-period maintenance operation on the multiple oil suction filters is facilitated.

[0021] 3、The oil tank for the shield machine hydraulic system sets the oil supply pipeline in the area of the oil tank body corresponding to the common oil suction cavity, simplifies the structure of the oil supply pipeline, utilizes the shortest possible oil supply pipeline to establish the connection between the oil suction port and the hydraulic pump oil discharge port, controls the distance between the hydraulic pump and the oil suction port within a reasonable range, and reduces the installation difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0022] The oil tank for the shield machine hydraulic system will be further described below in combination with the drawings and embodiments.

[0023] Figure 1 FIG. 1 is a structural schematic view of the oil tank for the shield machine hydraulic system;

[0024] Figure 2 FIG. 2 is a sectional view of the oil tank for the shield machine hydraulic system; Figure 1

[0025] FIG. 3 is a principle view of the oil tank for the shield machine hydraulic system; Figure 3

[0026] FIG. 4 is a structural schematic view of the shield machine hydraulic system; Figure 4

[0027] FIG. 5 is a principle view of the oil tank of the prior art; Figure 5 FIG. 6 is a structural schematic view of the shield machine hydraulic system.

[0028] DETAILED DESCRIPTION In the drawings: 1, oil tank body, 11, common oil suction cavity, 12, oil suction cavity, 13, oil return cavity, 14, oil suction port, 2, oil suction filter, 3, transverse partition plate, 4, vertical partition plate, 41, oil return hole, 5, oil supply pipeline, 6, hydraulic pump. DETAILED DESCRIPTION

[0029] The utility model will be described further in detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the structure related to the utility model.

[0030] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model. In addition, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0031] In the description of the utility model, it needs to be understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] As shown in Figure 1 and Figure 2 As shown in the drawings, an oil tank for a shield machine hydraulic system, comprising an oil tank body 1, the oil tank body 1 includes a mutual isolation suction oil cavity and common suction oil cavity 11, the suction oil cavity is provided with the oil suction filter 2 communicated with the common suction oil cavity 11, the suction oil cavity, the oil suction filter 2 and the common suction oil cavity 11 form the flow path of the return type. Working medium (hereinafter referred to as hydraulic oil) enters the suction oil cavity, and flows transversely along the suction oil cavity, and the hydraulic oil is filtered through the oil suction filter 2 and enters the common suction oil cavity 11, and is then sent out through the oil supply pipeline 5 communicated with the oil suction port 14 of the common suction oil cavity 11 and the hydraulic pump 6. This structure can avoid that the oil suction port 14 is too close to the oil return cavity 13, ensure that the hydraulic oil fully circulates in the oil tank body 1, and is beneficial to the full heat dissipation and sedimentation of the hydraulic oil. The pipeline for realizing the conventional function in the oil tank body 1 belongs to the conventional technical means, which will not be described here.

[0033] As shown in the drawings, an oil tank for a shield machine hydraulic system, comprising an oil tank body 1, the oil tank body 1 includes a mutual isolation suction oil cavity and common suction oil cavity 11, the suction oil cavity is provided with the oil suction filter 2 communicated with the common suction oil cavity 11, the suction oil cavity, the oil suction filter 2 and the common suction oil cavity 11 form the flow path of the return type. Working medium (hereinafter referred to as hydraulic oil) enters the suction oil cavity, and flows transversely along the suction oil cavity, and the hydraulic oil is filtered through the oil suction filter 2 and enters the common suction oil cavity 11, and is then sent out through the oil supply pipeline 5 communicated with the oil suction port 14 of the common suction oil cavity 11 and the hydraulic pump 6. This structure can avoid that the oil suction port 14 is too close to the oil return cavity 13, ensure that the hydraulic oil fully circulates in the oil tank body 1, and is beneficial to the full heat dissipation and sedimentation of the hydraulic oil. The pipeline for realizing the conventional function in the oil tank body 1 belongs to the conventional technical means, which will not be described here. Figure 3As shown, the common oil suction chamber 11 is located at the lower part of the side of the oil suction chamber, the common oil suction chamber 11 and the oil suction chamber are separated by the transverse partition plate 3, and the oil suction chamber and the common oil suction chamber 11 are arranged side by side along the length direction of the oil tank body 1. The transverse partition plate 3 is an L-shaped partition plate. The transverse partition plate 3 can be used to arrange the common oil suction chamber 11 and the oil suction chamber along the length direction, so that the common oil suction chamber 11 effectively covers the entire length space of the bottom of the oil tank body 1, and at the same time, sufficient installation positions are reserved for the oil supply pipeline 5 and the hydraulic pump 6, the oil supply pipeline 5 can be as short as possible to establish the connection between the oil suction port 14 and the oil discharge port of the hydraulic pump 6, and the oil supply pipeline 5 and the hydraulic pump 6 can be orderly installed in the space of the bottom of the oil tank body 1, which reduces the installation difficulty and reduces the cost of the oil supply pipeline 5.

[0034] The oil suction chamber is divided into an oil suction chamber 12 and an oil return chamber 13 by a vertical partition plate 4, and the vertical partition plate 4 is fixedly connected between the transverse partition plate 3 and the oil tank body 1. A plurality of oil suction filters 2 are uniformly distributed in the oil suction chamber 12 along the transverse direction, and the lower end of the oil suction filter 2 penetrates through the transverse partition plate 3 into the common oil suction chamber 11. Hydraulic oil enters the oil return chamber 13 and flows along the length direction of the oil tank body 1 to the oil suction chamber 12, and then flows into the common oil suction chamber 11 below after passing through the oil suction filter 2. Directly arranging a plurality of oil suction filters 2 in the oil suction chamber 12 can avoid the need to separately provide an oil suction filter 2 for each oil suction pump, and the advantage of this form of oil suction filter 2 is that as long as any hydraulic pump 6 is in a working state, oil will inevitably pass through the oil suction filter 2 into the common oil suction chamber 11, so that all the oil suction filters 2 can be in a working state at the same time, which simplifies the installation process, saves installation space, is conducive to reducing the use cost of the oil suction filter 2, realizes efficient use of the oil suction filter 2, and is conducive to performing periodic maintenance work on the plurality of oil suction filters 2.

[0035] The vertical partition plate 4, the transverse partition plate 3 and the oil tank body 1 are fixedly connected by welding, so as to ensure the stability and sealing performance of the connection. The vertical partition plate 4 is provided with a plurality of oil return holes 41 for connecting the oil suction chamber 12 and the oil return chamber 13, and a filter screen is arranged in each oil return hole 41. The hydraulic oil in the oil return chamber 13 enters the oil suction chamber 12 through the oil return holes 41 in the vertical partition plate 4, and the filter screen simultaneously plays a filtering role to ensure the cleanliness of the oil.

[0036] As shown in the drawings, Figure 4 The oil tank is applied to a hydraulic system of a shield tunneling machine. The bottom of the oil tank body 1 is provided with a plurality of oil suction ports 14 which are communicated with the common oil suction chamber 11 along the length direction, and each oil suction port 14 is connected with the hydraulic pump 6 through the oil supply pipeline 5.

[0037] In the oil tank, the flow path of the hydraulic oil is: the oil return cavity 13 - the vertical partition plate 4 - the oil suction cavity 12 - the oil suction filter 2 - the oil suction common cavity 11 - the oil suction port 14, and the flow mode can ensure that the working medium can fully circulate in the oil tank, and is beneficial to heat dissipation, impurity precipitation of the working medium.

[0038] A plurality of detection doors are arranged at intervals in the length direction of the common oil suction cavity 11, and the detection doors can be correspondingly used for maintenance work.

[0039] In conclusion, the oil tank for the hydraulic system of the shield machine avoids that the oil suction port is arranged close to the oil return cavity, can ensure that the working medium fully flows in the oil tank, and is beneficial to heat dissipation, filtration and impurity precipitation of the working medium.

[0040] According to the ideal embodiments of the utility model, the related personnel can make various changes and modifications without deviating from the technical thought of the utility model. The technical scope of the utility model is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. An oil tank for a hydraulic system of a tunnel boring machine, comprising an oil tank body (1), characterized in that, The oil tank body (1) comprises a suction oil cavity and a common oil suction cavity (11) which are isolated and parallel, the suction oil cavity is provided with an oil suction filter (2) which communicates with the common oil suction cavity (11), and the suction oil cavity and the common oil suction cavity (11) form a U-turn type flow path.

2. The tank for a hydraulic system of a tunneling machine according to claim 1, characterized in that, The common oil suction cavity (11) is located at the lower side of the suction oil cavity, and the common oil suction cavity (11) and the suction oil cavity are separated by a transverse partition plate (3).

3. The tank for a hydraulic system of a tunneling machine according to claim 2, characterized in that, The suction oil cavity is separated into an oil suction cavity (12) and an oil return cavity (13) by a vertical partition plate (4), and the oil suction filter (2) is arranged in the oil suction cavity (12).

4. The oil tank for a hydraulic system of a shield tunneling machine according to claim 3, characterized in that, A plurality of oil suction filters (2) are uniformly distributed in the oil suction cavity (12) in the transverse direction, and the lower end of the oil suction filter (2) penetrates through the transverse partition plate (3) into the common oil suction cavity (11).

5. The tank for a hydraulic system of a tunneling machine according to claim 4, characterized in that, The vertical partition plate (4) is provided with a plurality of oil return holes (41) which communicate the oil suction cavity (12) and the oil return cavity (13), and the oil return holes (41) are provided with filter screens.

6. Tank for the hydraulic system of a tunneling machine according to any one of claims 1-5, characterized in that, The suction oil cavity and the common oil suction cavity (11) are arranged along the length direction of the oil tank body (1).

7. The oil tank for a hydraulic system of a shield tunneling machine according to claim 4, characterized in that, The transverse partition plate (3) is an L-shaped partition plate, and the transverse partition plate (3) is fixedly connected with the side wall of the oil tank body (1) to separate the oil tank body (1) into the suction oil cavity and the common oil suction cavity (11).

8. The tank for a hydraulic system of a tunneling machine according to claim 7, characterized in that The vertical partition plate (4) is fixedly connected between the transverse partition plate (3) and the oil tank body (1).

9. The oil tank for a hydraulic system of a shield tunneling machine according to claim 1, characterized in that, The bottom of the oil tank body (1) is provided with a plurality of oil suction ports (14) which communicate with the common oil suction cavity (11) along the length direction, and each oil suction port (14) is connected with a hydraulic pump (6) through an oil supply pipeline (5).

10. The oil tank for a hydraulic system of a tunneling machine according to claim 1, characterized in that, A plurality of detection doors are arranged in the length direction of the common oil suction cavity (11).

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