Large-gradient self-adaptive hydraulic oil tank

Abstract

The utility model discloses a large-gradient self-adaptive hydraulic oil tank which solves the problem that in the prior art, an oil tank cannot be self-adaptive to a large gradient, and a respirator is prone to being blocked or oil liquid overflows. According to the technical scheme, the large-gradient self-adaption hydraulic oil tank comprises an oil tank body, at least one floating ball type control valve is arranged on the oil tank body, a respirator is connected to the floating ball type control valve, the interior of the oil tank body is divided into an oil suction area and an oil return area through a partition plate filtering assembly, and an oil suction filter set is arranged at the bottom of the oil suction area. An oil outlet is formed in the bottom of the oil return area. Compared with the prior art, the mode that the breather valve of the floating ball type control valve is combined with the breather is adopted, large-gradient self-adaption work of the oil tank can be achieved, the situation that the breather is blocked or oil overflows when the oil tank inclines at the high liquid level can be avoided, pressure in the oil tank is adjusted in real time, and normal work of a hydraulic system is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mine TBM, especially a kind of hydraulic oil tank. BACKGROUND

[0002] With the rapid expansion of mine TBM, shaft and other heading machine market, small turn, large slope has become a new challenge restricting its development. Affected by the working environment, the hydraulic oil tank should adapt to a certain roadway slope work, and the traditional hydraulic oil tank cannot meet the use demand. Under large slope, the oil tank is easy to appear breather blockage or oil spill, and the oil suction filter port is easy to be exposed on the liquid surface, so that the hydraulic pump working produces suction phenomenon, which affects the equipment performance. At present, to adapt to large slope, the hydraulic oil tank of mine TBM and other heading machine equipment adopts increasing the volume of hydraulic oil tank to reduce the highest liquid level height, to avoid the hydraulic oil spilling through breather after the slope inclination. The lowest liquid level height is increased to avoid causing the hydraulic pump suction. In this way, the volume of hydraulic oil tank is bloated, the effective utilization rate of hydraulic oil tank is low, the initial hydraulic oil is more, and the cost is high. Therefore, a new large slope self-adaptive hydraulic oil tank needs to be developed.

[0003] The large slope self-adaptive hydraulic oil tank not only should have the phenomenon that the hydraulic pump does not occur suction under large slope, but also the breather of the oil tank can work normally, to avoid the phenomenon that the breather is blocked when the oil tank is inclined, causing the pressure disorder in the oil tank or the oil spill, causing environmental pollution and resource waste. In the prior art, a large slope heading machine hydraulic oil tank disclosed in Chinese patent with publication number CN 103671298 A only increases the length of oil suction filter element to avoid the phenomenon of oil pump suction, and cannot guarantee the phenomenon that oil spills from breather at high liquid level. A large slope roadway hydraulic oil tank disclosed in Chinese patent with publication number CN 114838018 B is designed by dividing the internal space of the oil tank body into upper and lower layers, and the longitudinal section parallel to the moving direction is two-step shaped. Although it can avoid the occurrence of oil spill and suction phenomenon to some extent, the volume of the oil tank body is bloated, which is limited by the use space on site, and the effective utilization rate of hydraulic oil is low. In addition, an oil tank device suitable for large slope vehicle-mounted reinforced power station disclosed in Chinese patent with publication number CN 208380730 U cannot avoid the problem that oil spills from breather under large slope. Therefore, it is necessary to design a large slope self-adaptive hydraulic oil tank. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the above background art, the utility model provides a large slope self-adaptive hydraulic oil tank, which solves the problem that the oil tank in the prior art cannot adapt to large slope and is easy to block the breather or cause oil spill.

[0005] The technical scheme of the utility model is achieved as follows: a large-gradient self-adaptive hydraulic oil tank, comprising an oil tank body, at least one floating ball type control valve is arranged on the oil tank body, a breather is connected to the floating ball type control valve, the inside of the oil tank body is divided into an oil suction area and an oil return area by a partition filter assembly, an oil suction filter group is arranged at the bottom of the oil suction area, and a drain port is arranged at the bottom of the oil return area. The floating ball type control valve is combined with the breather, the oil tank can work in a large-gradient self-adaptive mode, the breather can be prevented from being blocked or oil from overflowing when the oil tank is tilted at a high liquid level, the pressure in the oil tank can be adjusted, and the hydraulic system can work normally. The oil suction area and the oil return area are separated by the partition filter assembly, air bubbles in the returned oil can be eliminated, the temperature and impurities of the oil can be reduced, the oil suction surface is lowered to the lowest height by the oil suction filter group arranged at the bottom of the oil suction area, and air suction is avoided; the oil pollution can be effectively controlled, and the pump group can work normally.

[0006] Further preferably, the floating ball type control valve comprises a breather valve and a floating ball, the floating ball is connected to the valve core of the breather valve through a connecting rod, and the floating ball is located in the oil tank body and controls the opening and closing of the breather valve through the oil liquid level in the oil tank body. The floating ball type control valve is self-adaptive to the liquid level of the oil tank, the breather valve is closed at a high liquid level and opened at a low liquid level, the breather is communicated with the inside of the oil tank, the pressure in the oil tank is adjusted, and the oil will not overflow at a large gradient.

[0007] Further preferably, the top of the oil tank body is provided with a breathing hole, the valve body of the breather valve is fixed in the breathing hole, the valve core of the breather valve is located in the valve body of the breather valve, and the connecting rod is connected to the bottom of the valve core of the breather valve through an adjusting bolt. The height and angle of the floating ball are adjusted through the adjusting bolt, so as to adapt to the initial liquid level of the oil tank.

[0008] As a preferred mode, two floating ball type control valves are arranged on the upper part of the oil tank body, the two floating ball type control valves correspond to the oil suction area and the oil return area respectively, the two floating ball type control valves are connected through a hard pipe, and the breather is connected to the hard pipe. The inside of the oil tank is communicated with the outside through the breather valve, the breather valve is self-adaptive to the liquid level of the oil tank, the breather valve on one side is closed at a high liquid level and opened at a low liquid level, the breather is communicated with the inside of the oil tank, and the pressure in the oil tank is adjusted in time.

[0009] As another preferred mode, one floating ball type control valve is arranged on the upper part of the oil tank body, the floating ball type control valve corresponds to the oil suction area or the oil return area, and the breather is connected to the floating ball type control valve and located above the oil tank body. This scheme cancels the structural accessories such as the hard pipe, so that the same function is achieved, and the structure is more compact.

[0010] Further preferably, the oil tank body is provided with a detection device; the detection device comprises a liquid level sensor, a temperature sensor and a pressure sensor.

[0011] Further preferably, the oil tank body is provided with a detection device; the detection device comprises a liquid level sensor, a temperature sensor and a pressure sensor.

[0012] Further preferably, the oil tank body is provided with a detection device; the detection device comprises a liquid level sensor, a temperature sensor and a pressure sensor.

[0013] Further preferably, the oil tank body is provided with a detection device; the detection device comprises a liquid level sensor, a temperature sensor and a pressure sensor.

[0014] Further preferably, the oil tank body is provided with a detection device; the detection device comprises a liquid level sensor, a temperature sensor and a pressure sensor.

[0015] The beneficial effects of the present application are as follows: 1. Compared with the prior art, the breathing valve and the breather of the floating ball type control valve are combined, which can realize large slope adaptive work of the oil tank, can avoid blockage of the breather or overflow of the oil liquid when the oil tank is inclined at a high liquid level, can realize real-time adjustment of the pressure in the oil tank, and can ensure normal work of the hydraulic system.

[0016] 2. Compared with the prior art, the oil absorption area and the oil return area are separated by the intermediate partition plate, which can eliminate the oil return bubbles, reduce the oil temperature and impurities, improve the oil quality and circulation capacity.

[0017] 3. Compared with the prior art, the bottom of the oil absorption area is provided with a side-standing oil absorption filter group arranged in a lowered manner, which can reduce the initial amount of hydraulic oil in the oil tank at the minimum liquid level, improve the effective utilization rate of the oil tank volume, and save costs.

[0018] 4. The large-gradient self-adaptive hydraulic oil tank is designed in combination with actual application conditions of the mine TBM, all components of which are mature and general parts, and has the advantages of strong adaptability to environment, high quality, high safety and reliability, good universality and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0020] Figure 1 The two ball float control valve schematic diagram is used for the present application.

[0021] Figure 2 The one ball float control valve schematic diagram is used for the present application.

[0022] Figure 3 The ball float control valve schematic diagram is used for the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0024] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, 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 intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0025] As Figure 1 , 2As shown in the embodiment 1, a large slope adaptive hydraulic tank includes a tank body 12, which in this embodiment can adopt a rectangular structure tank; with the tank width unchanged and the length appropriately reduced, the required hydraulic oil amount of the tank to ensure not to be sucked empty is reduced, and the effective utilization rate of the tank is improved. The tank body 12 is provided with at least one floating ball type control valve 3, and the floating ball type control valve 3 is connected with a breather 2; the breather adopts a model SDB-121 breather of Stauff, Germany, and the floating ball type control valve 3 is a floating ball valve that is opened and closed through a liquid level control valve body. The inside of the tank body 12 is divided into an oil suction area and an oil return area by a baffle filter assembly 4, which can eliminate oil return bubbles, reduce oil temperature and impurities. The bottom of the oil suction area is provided with an oil suction filter assembly 7, which can adopt a horizontal filter assembly. By reducing the height of the oil suction filter assembly arranged on the side, the initial oil tank hydraulic oil amount at the minimum liquid level is reduced, the effective utilization rate of the tank volume is high, the structure is compact and reliable, and the cost is saved. The oil suction filter assembly 7 adopts at least one oil suction filter, which provides reliable oil supply guarantee for large slope work, is placed at the bottom of the side of the tank, is fixed by a flange and a bolt, ensures the precision and pressure of the oil suction oil, and ensures the normal work of the power element. The bottom of the oil return area is provided with a drain port for convenient oil replacement. Compared with the commonly used method of increasing the height of the hydraulic tank to reduce the height of the highest liquid level to avoid hydraulic oil overflow through the breather after the slope is inclined, the combination of the breathing valve in the floating ball type control valve and the breather has higher reliability, the tank structure is more compact, the effective utilization rate of the hydraulic tank volume is high, and the cost advantage of the hydraulic oil utilization rate is outstanding.

[0026] In this embodiment, as preferred, Figure 3 As shown, the floating ball type control valve 3 includes a breathing valve piece 13 and a floating ball 14, the floating ball 14 is connected with the valve core of the breathing valve piece 13 through a connecting rod piece 15, and the floating ball 14 is located in the tank body 12 and controls the opening and closing of the breathing valve piece 13 through the oil liquid level in the tank body 12. The breathing valve piece 13 serves as an opening and closing piece; when the tank is inclined, the oil liquid in the tank pushes the floating ball to move up, and when the height reaches the set height, the valve core starts to close the breathing valve piece; when the oil liquid height continues to rise to the set limit position, the breathing valve piece is completely closed; preventing the oil liquid from overflowing from the breather.

[0027] The embodiment 2 is a large slope adaptive hydraulic oil tank, based on the embodiment 1, in the embodiment, the breathing valve 13 further comprises a valve core and a valve body, the valve body is provided with an axial inlet and an outlet perpendicular to the inlet, the valve core moves along the axial direction under the lead of the float ball and the connecting rod, and the opening and closing of the breathing valve is realized. The oil tank body 12 is provided with a breathing hole at the top, the valve body of the breathing valve 13 is fixed in the breathing hole, the valve core of the breathing valve 13 is located in the valve body of the breathing valve 13, and the connecting rod 15 is connected to the bottom of the valve core of the breathing valve 13 through the adjusting bolt 17. Specifically, a welded flange is arranged at the breathing hole, a connecting flange is arranged on the valve body, the connecting flange is connected with the welded flange through bolts, the adjusting bolt can adopt a double-nut bolt, and the angle and height of the connecting rod 15 are adjusted through the double-nut, so that the float ball is suitable for the initial oil level in the oil tank, and the precision of controlling the opening and closing of the breathing valve is ensured.

[0028] As shown in Figure 1 , in the embodiment, as an implementation manner, the oil tank body 12 is provided with two float ball type control valves 3 at the upper part, the two float ball type control valves 3 correspond to the oil suction area and the oil return area respectively, the two float ball type control valves 3 are connected through the hard pipe 16, and the breather 2 is connected to the hard pipe 16. The number of the breather 2 can be one or two or more according to the requirement. When the two float ball type control valves 3 are arranged, there are two breathing valves, the breathing valves adapt to the oil tank inclination liquid level, the breathing valve corresponding to the high liquid level on one side is closed, and the breathing valve corresponding to the low liquid level on the other side is opened, the breather is communicated with the inside of the oil tank while the overflow of the low liquid level oil tank from the breather is avoided, the internal pressure of the oil tank is adjusted, and the oil liquid cannot overflow under the large slope. Compared with the common method of increasing the height of the hydraulic oil tank to reduce the highest liquid level height and avoid the overflow of the hydraulic oil through the breather after the inclination of the slope, the combination of the breathing valve and the breather has higher reliability, the structure of the oil tank is more compact, the effective utilization rate of the volume of the hydraulic oil tank is high, and the cost advantage of the utilization rate of the hydraulic oil is prominent.

[0029] The embodiment 3 is a large slope adaptive hydraulic oil tank, which is different from the embodiment 2, as shown in Figure 2 , in the embodiment, the oil tank body 12 is provided with one float ball type control valve 3 at the upper part, and the float ball type control valve 3 corresponds to the oil suction area or the oil return area; in the embodiment, the float ball type control valve 3 is arranged at the top of the tank body corresponding to the oil return area, and the breather 2 is connected to the float ball type control valve 3 and located above the oil tank body 12. When the oil tank is inclined, the oil liquid height in the oil tank reaches the initial adjusting height, the breathing valve starts to close, and when the oil liquid height continues to rise, the breathing valve is completely closed, and the functions of pressure regulation and overflow prevention can also be realized. However, this scheme will increase the height requirement of the oil tank body, and the effective utilization rate of the volume of the oil tank is low.

[0030] Example 4, a large slope adaptive hydraulic oil tank, is further optimized on the basis of examples 2 or 3, the baffle filter assembly 4 in this implementation includes an intermediate baffle plate arranged at the bottom of the oil tank body 12, at least one through hole is opened on the intermediate baffle plate, and a grid plate is fixedly arranged in the through hole. In this embodiment, two rectangular holes are opened on the intermediate baffle plate, and a uniformly distributed circular hole type grid plate is welded on each rectangular hole; the oil suction area and the oil return area are separated, and circular holes are uniformly opened on the baffle plate, which can prolong the circulation time of hydraulic oil in the oil tank, greatly eliminate bubbles, reduce the temperature of hydraulic oil and remove impurities in hydraulic oil.

[0031] In order to improve the safety and reliability, the detection device is further arranged on the oil tank body 12. The detection device includes a liquid level sensor 6, a temperature sensor 9 and a pressure sensor 8. Specifically, the temperature sensor 9 is arranged at the middle of the left side of the oil tank body, and the pressure sensor 8 is arranged at the upper part of the left side of the oil tank body. The liquid level sensor 6 is arranged in the middle of the upper cover of the oil tank body. The liquid level sensor monitors the liquid level of the oil in the oil tank, and alarms when the liquid level is too low or too high. The temperature sensor monitors the temperature of the oil in the oil tank, and starts the circulating pump to cool the oil in the oil tank when the oil temperature is too high; the starting condition of the pump group is controlled to make the system work more safely and reliably. The pressure sensor can display the pressure condition in the oil tank in real time, which can effectively solve the risk of hydraulic system failure caused by the blockage of the breathing device in the high dust environment of the mine, and ensure the normal work of the oil tank.

[0032] In this embodiment, transparent rubber tubes 10 are arranged on the left and right sides of the oil tank body 12 and communicate with the inside of the oil tank. The transparent rubber tubes 10 communicate with the bottom and top of the oil tank through ball valves, which is convenient for visual monitoring of the liquid level of the oil tank. It should be noted that the number and installation form of the transparent rubber tubes and ball valves can be adjusted according to the specific situation.

[0033] In this embodiment, the oil tank body 12 is provided with an observation manhole 1 on the front tank wall corresponding to the oil suction area and the oil return area, and a cleaning cover is arranged in the observation manhole 1 through an inner sunken manhole flange. Specifically, the observation manhole is arranged at the middle of the front of the oil tank, and the cleaning cover is fixed on the inner sunken flange of the oil tank through 12 evenly distributed bolts, which is convenient for internal maintenance and cleaning of the oil tank. The oil return filter 5 is arranged at the upper part of the oil tank body corresponding to the oil return area; three oil return filters are arranged above the oil tank body and lead to the oil return area inside the oil tank. It should be noted that the number and installation form of the oil return filter and the oil suction filter are not limited. The oil drain port is provided with a ball valve 11; the oil drain port is arranged at the bottom of the right side of the oil tank body, and the ball valve is fixed on the oil tank welding flange, which is convenient for replacing the oil.

[0034] The utility model discloses a big gradient self -adaptation hydraulic oil tank, the breathing valve is the normal open logic unit, and the opening and closing of breathing valve can be adjusted and controlled according to the actual oil height. It is designed in combination with the actual application situation of mine TBM. The components all are mature general parts, and the adaptability is strong, the quality is excellent, the safety reliability is high, the versatility is good and the cost is low.

[0035] In the description of the utility model, it is understood that the orientation or position relation of the terms "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0036] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A large-slope adaptive hydraulic oil tank, comprising an oil tank body (12), characterized in that: At least one float control valve (3) is provided on the oil tank body (12), and a breather (2) is connected to the float control valve (3). The inside of the oil tank body (12) is divided into an oil suction area and an oil return area through a partition filter assembly (4). An oil suction filter group (7) is provided at the bottom of the oil suction area, and an oil drain port is provided at the bottom of the oil return area.

2. The large-slope adaptive hydraulic oil tank according to claim 1, characterized in that: The float-type control valve (3) includes a breather valve (13) and a float (14). The float (14) is connected to the valve core of the breather valve (13) through a connecting rod (15). The float (14) is located inside the oil tank (12) and controls the opening and closing of the breather valve (13) by the oil level inside the oil tank (12).

3. The large-slope adaptive hydraulic oil tank according to claim 2, characterized in that: The top of the tank body (12) is provided with a breathing hole, the valve body of the breathing valve (13) is fixed in the breathing hole, the valve core of the breathing valve (13) is located in the valve body of the breathing valve (13), and the connecting rod (15) is connected to the bottom of the valve core of the breathing valve (13) by adjusting bolt (17).

4. The large-slope adaptive hydraulic oil tank according to any one of claims 1 to 3, characterized in that: The upper part of the oil tank body (12) is provided with two float control valves (3), which correspond to the oil suction area and the oil return area respectively. The two float control valves (3) are connected to each other through a hard pipe (16), and the breather (2) is connected to the hard pipe (16).

5. The large-slope adaptive hydraulic oil tank according to any one of claims 1 to 3, characterized in that: The upper part of the oil tank body (12) is provided with a float control valve (3), which corresponds to the oil suction area or the oil return area. The breather (2) is connected to the float control valve (3) and is located above the oil tank body (12).

6. The large-slope adaptive hydraulic oil tank according to claim 1, characterized in that: The partition filter assembly (4) includes a middle partition plate disposed at the bottom of the oil tank body (12), and at least one through hole is provided on the middle partition plate, and a mesh plate is fixedly disposed in the through hole.

7. The steep gradient adaptive hydraulic tank according to claim 1 or 6, characterized in that: The oil tank body (12) is also equipped with a detection device; the detection device includes a liquid level sensor (6), a temperature sensor (9) and a pressure sensor (8).

8. The large-slope adaptive hydraulic oil tank according to claim 1, characterized in that: The oil tank body (12) is provided with transparent rubber tubes (10) on both the left and right sides that communicate with the inside of the oil tank.

9. The large-slope adaptive hydraulic oil tank according to claim 1, 6, or 8, characterized in that: The oil tank body (12) is provided with observation windows (1) on the front wall corresponding to the oil suction area and the oil return area. A cleaning cover is provided in the observation window (1) through a recessed window flange.

10. The large-slope adaptive hydraulic oil tank according to claim 1, characterized in that: An oil return filter (5) is provided on the upper part of the oil tank body (12) and at the corresponding oil return area; a ball valve (11) is provided at the oil drain port.

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