CN112012985A

CN112012985A - Engineering machinery water system and engineering machinery equipment

Info

Publication number: CN112012985A
Application number: CN202011021903.XA
Authority: CN
Inventors: 黎伟福; 范鹏程; 卢其文; 王龙; 崔楷华
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd; Shanghai Zoomlion Piling Machinery Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd; Shanghai Zoomlion Piling Machinery Co Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2020-12-01

Abstract

The invention provides an engineering machinery water system and engineering machinery equipment, wherein the engineering machinery water system comprises a water inlet channel, a cooling water tank, a pressure supply pump and a spraying device, a water inlet of the cooling water tank is communicated with the water inlet channel, a water inlet of the pressure supply pump is communicated with a water outlet of the cooling water tank, the spraying device is connected with a water outlet of the pressure supply pump, and the cooling water tank is used for cooling a hydraulic system of the engineering machinery equipment. In the engineering mechanical water system and the engineering mechanical equipment, the cooling water tank and the pressure supply pump are arranged, and the water in the cooling water tank is pressurized through the pressure supply pump, so that the requirement on the water inlet pressure is avoided, the stable water pressure can be ensured, and meanwhile, the cooling water tank can be used for effectively cooling the hydraulic system of the engineering machinery.

Description

Engineering machinery water system and engineering machinery equipment

Technical Field

The invention relates to the technical field of engineering mechanical equipment, in particular to an engineering mechanical water system and engineering mechanical equipment.

Background

Many engineering machinery equipment need realize its construction operation through hydraulic system, and how to cool off hydraulic system properly is very important to guarantee the normal work of each relevant components and parts. For example, for a cantilever type tunnel boring machine, actions of cutting, lifting, rotating, loading, transporting, walking and the like are completed by a hydraulic motor or a hydraulic oil cylinder, the tunneling working condition is poor, the working space is narrow, the working load is high, the temperature rise of a hydraulic system is particularly rapid, and if effective measures are not taken to limit the temperature rise, great damage is caused to relevant components.

At present, a water system is generally adopted to cool the parts such as a hydraulic system, a motor and the like of engineering mechanical equipment such as a cantilever tunnel boring machine and the like. In addition, the water system also has the functions of spraying the working surface to reduce the dust concentration and eliminate sparks formed during cutting.

As shown in fig. 1, a water system includes a water inlet passage 10, a filter 11, a first water passage 13, and a second water passage 15, and water from the water inlet passage 10 flows through the filter 11 to the first water passage 13 and the second water passage 15, respectively. The water in the first waterway 13 flows into the cutting head through the first ball valve 132, the first overflow valve 134 and the like, and enters the internal spraying system. The water in the second water path 15 passes through the second ball valve 152, the second overflow valve 154 and the cooler 156, enters the external spraying system, and is sprayed out by the external spraying system. And cooler 156 cools the hydraulic system. The water from the water inlet passage 10 is required to be 3 to 8 MPa. In the water system, the water from the water inlet passage 10 is required to be 3-8 Mpa, the requirement on water supply pressure is high, the tap water provided by common tunneling can not meet the required pressure requirement, the water supply pipeline is long, pressure drop is easy to generate, and the water supply pressure is unstable; in addition, when water is supplied to a cooler or the like, the pressure is changed due to the change of the water passage, so that the external spray pressure is easily insufficient, and the predetermined dust fall effect cannot be achieved.

The foregoing description is provided for general background information and is not admitted to be prior art.

Disclosure of Invention

The invention aims to provide an engineering machinery water system with low requirement on water inflow and stable water pressure and engineering machinery equipment.

The invention provides an engineering mechanical water system which comprises a water inlet channel, a cooling water tank, a pressure supply pump and a spraying device, wherein a water inlet of the cooling water tank is communicated with the water inlet channel, a water inlet of the pressure supply pump is communicated with a water outlet of the cooling water tank, the spraying device is connected with a water outlet of the pressure supply pump, and the cooling water tank is used for cooling a hydraulic system of engineering mechanical equipment.

In one embodiment, the engineering machinery water system further comprises a water return waterway, and one end of the water return waterway is communicated with a water outlet of the cooling water tank.

In one embodiment, one end of the water return waterway is further communicated between the water outlet of the pressure supply pump and the spraying device, so that water from the water outlet of the cooling water tank is allowed to enter the spraying device or water from the water outlet of the pressure supply pump enters the water return waterway.

In one embodiment, the cooling element for cooling the electric appliance is further disposed between the pressure supply pump and the spraying device.

In one embodiment, the engineering machinery water system further comprises a pressure supplementing pump, and a position between a water outlet of the pressure supplying pump and the spraying device, which is communicated with the water return waterway, is connected to a water inlet of the pressure supplementing pump.

In one embodiment, a water path between the pressure supply pump and the cooling element is also connected with a first overflow valve, the water path between the pressure supply pump and the cooling element is communicated with an inlet and a control port of the first overflow valve, and a water tank is communicated with an outlet of the first overflow valve; and a water path between the pressure supplementing pump and the spraying device is also connected with a second overflow valve, the water path between the pressure supplementing pump and the spraying device is communicated with an inlet and a control port of the second overflow valve, and the water tank is communicated with an outlet of the second overflow valve.

In one embodiment, a filter, a first switch element and a third overflow valve are arranged on the water inlet.

In one embodiment, the spraying device comprises an outer spraying mechanism and an inner spraying mechanism, and the outer spraying mechanism and the inner spraying mechanism are both connected to the water outlet of the pressure supply pump.

The invention also provides engineering mechanical equipment which comprises a hydraulic system and the engineering mechanical water system, wherein the hydraulic system comprises a main oil tank, an auxiliary oil tank, an oil pump and a hydraulic oil way, the oil pump sucks oil from the main oil tank and supplies oil to the hydraulic oil way, an oil return pipeline of the hydraulic oil way is communicated with an oil inlet of the auxiliary oil tank, an oil outlet of the auxiliary oil tank is connected to the main oil tank, and a cooling water tank is arranged adjacent to the auxiliary oil tank of the hydraulic system.

In one embodiment, the hydraulic system further includes a filter device, and the filter device is disposed in the auxiliary oil tank or on an oil path between the auxiliary oil tank and the oil return line.

In the engineering mechanical water system and the engineering mechanical equipment, the cooling water tank and the pressure supply pump are arranged, and the water in the cooling water tank is pressurized through the pressure supply pump, so that the requirement on the water inlet pressure is avoided, the stable water pressure can be ensured, and meanwhile, the cooling water tank can be used for effectively cooling the hydraulic system of the engineering machinery.

Drawings

Fig. 1 is a schematic view of a water system of a tunnel boring machine.

Fig. 2 is a schematic structural diagram of a water system of a construction machine according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a hydraulic system according to an embodiment of the present invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

The engineering mechanical water system provided by the embodiment of the invention can be applied to a tunnel boring machine, and can also be applied to other engineering mechanical equipment. Referring to fig. 2, the water system of the engineering machinery of the present embodiment includes a water inlet channel 21, a cooling water tank 23, a pressure supply pump 25 and a spraying device 27, wherein a water inlet of the cooling water tank 23 is connected to the water inlet channel 21, a water inlet of the pressure supply pump 25 is connected to a water outlet of the cooling water tank 23, and the spraying device 27 is connected to a water outlet of the pressure supply pump 25. The cooling water tank 23 is used for cooling a hydraulic system of the engineering mechanical equipment, and specifically, the cooling water tank 23 may be disposed adjacent to an auxiliary oil tank of the hydraulic system to cool oil in the auxiliary oil tank.

In this embodiment, the water system of the engineering machinery further includes a water return waterway 29, one end of the water return waterway 29 is communicated with the water outlet of the cooling water tank 23, and the other end is connected to a water return tank (not shown), wherein the water return tank may also be connected to the water inlet waterway 21. After heat exchange is performed between the water in the cooling water tank 23 and the oil in the auxiliary oil tank, a part of the water is ejected from the spraying device by the pressure feed pump 25 and the like, and the other part of the water flows back through the return water channel 29. Meanwhile, by arranging the water return waterway 29, circulating water is formed, and the hydraulic system can be continuously cooled.

In this embodiment, one end of the water return waterway 29 is further communicated between the water outlet of the pressure supply pump 25 and the spraying device 27. Therefore, water output from the pressure supply pump 25 can also directly enter the water return waterway 29 to flow back, when the spraying device 27 cannot spray water due to blockage of dust and the like, cooling water cannot be blocked, the existing external spraying and internal spraying are easily blocked by dust, the waterway is blocked without timely cleaning, the use of a cooling function is influenced, and the temperature of a hydraulic system is overhigh, so that mechanical components are damaged; the water in the water return waterway 29 and the water from the pressure supply pump 25 can be supplied to the spraying device 27 together, and when the water supplied by the pressure supply pump 25 is insufficient, the spraying device 27 can be replenished. Specifically, a cooling element 31 for cooling an electric appliance such as a cutting motor or an oil pump motor is further provided between the pressure supply pump 25 and the spraying device 27. More specifically, a first overflow valve 33 is connected to a water path between the pressure supply pump 25 and the cooling element 31, the water path between the pressure supply pump 25 and the cooling element 31 is communicated with an inlet and a control port of the first overflow valve 33, a water tank (which may be a return water tank or another water tank) is communicated with an outlet of the first overflow valve 33, and the set pressure of the first overflow valve 33 may be 3 Mpa. When the pressure of the water path between the pressure supply pump 25 and the cooling element 31 is too high, part of the water overflows through the first overflow valve 33, and damage to the cooling element 31 caused by the too high pressure is avoided. And a first pressure gauge 35 is arranged on the water path between the pressure supply pump 25 and the cooling element 31, so that a user can know the pressure in time, and the normal work of the whole water system is ensured.

In this embodiment, the engineering machinery water system further includes a pressure compensating pump 37, and a communication part between the water outlet of the pressure supplying pump 25 and the spraying device 27 and the water return waterway 29 is connected to a water inlet of the pressure compensating pump 37. Specifically, a water path between the pressure compensating pump 37 and the spraying device 27 is further connected with a second overflow valve 39, further, the water path between the pressure compensating pump 37 and the spraying device 27 is communicated with an inlet and a control port of the second overflow valve 39, a water tank (which may be a return water tank or other water tanks) is communicated with an outlet of the second overflow valve 39, and the set pressure of the second overflow valve 39 may be 3 Mpa. When the pressure of the water path between the pressure supplementing pump 37 and the spraying device 27 is too high, part of water overflows through the second overflow valve 39 to form stable pressure, and the spraying effect is good. And a second pressure gauge 41 is arranged on the water path between the pressure supplementing pump 37 and the spraying device 27, so that a user can know the pressure in time, and the normal work of the whole water system is ensured.

In this embodiment, the water inlet passage 21 is provided with a filter 212 and a first switching element 214. The water entering the water inlet channel 21 can be filtered by the filter 212, so that excessive impurities are prevented from entering the cooling and spraying water system, and damage to various components in the water system is avoided. The first switching element 214 may be a ball valve. The water inlet channel 21 may further be provided with a third overflow valve 216 to ensure stable pressure of water entering the cooling water tank 23 and avoid damage to the cooling water tank 23. Specifically, an inlet and a control port of the third overflow valve 216 are communicated with a water inlet of the cooling water tank 23, an outlet of the third overflow valve 216 is communicated with a water tank (which may be a return water tank or other water tanks), and a set pressure of the third overflow valve 216 may be 3 Mpa. The pressure of the water entering the cooling water tank 23 from the water inlet 21 is not required, and may be generally 3Mpa, which is a common water supply for urban use.

In this embodiment, the spraying device 27 includes an outer spraying mechanism 272 and an inner spraying mechanism 274, and both the outer spraying mechanism 272 and the inner spraying mechanism 274 are connected to the water outlet of the pressurizing pump 37. The outer spraying mechanism 272 sprays water from the outside of the cutting mechanism of the construction machine equipment to the cutting mechanism from the outside, and the inner spraying mechanism 274 sprays water from the inside of the cutting mechanism of the construction machine equipment to the cutting mechanism from the inside. Specifically, a second switching element 276 is provided between the outer spray mechanism 272 and the pressure compensating pump 37, and a third switching element 278 is provided between the inner spray mechanism 274 and the pressure compensating pump 37. The second switching element 276 and the third switching element 278 may each be a ball valve.

Referring to fig. 3, the engineering mechanical equipment of an embodiment includes a hydraulic system and the above engineering mechanical water system, the hydraulic system includes a main oil tank 51, an auxiliary oil tank 52, an oil pump 53 and a hydraulic oil path 55, the oil pump 53 sucks oil from the main oil tank 51 and supplies oil to the hydraulic oil path 55, an oil return line of the hydraulic oil path 55 is communicated with an oil inlet of the auxiliary oil tank 52, the auxiliary oil tank 52 recovers oil returned from the hydraulic oil path 55, an oil outlet of the auxiliary oil tank 52 is connected to the main oil tank 51, and oil in the auxiliary oil tank 52 is delivered to the main oil tank 51 for recycling. The cooling water tank 23 is disposed adjacent to the auxiliary oil tank 52 of the hydraulic system to cool the oil in the auxiliary oil tank 52. In particular, the hydraulic system may further comprise a filter device for clean filtering of the return oil from the hydraulic oil circuit 55, and more particularly, the filter device may be provided in the auxiliary oil tank 52 or on the oil circuit between the auxiliary oil tank 52 and the return line.

In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. It will be understood that when an element such as a layer, region or substrate is referred to as being "formed on," "disposed on" or "located on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly formed on" or "directly disposed on" another element, there are no intervening elements present.

In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc., indicate the orientation or weight relationship based on the orientation or weight relationship shown in the drawings, only for the sake of clarity and descriptive convenience of the technical solution, and thus should not be construed as limiting the present invention.

As used herein, the ordinal adjectives "first", "second", etc., used to describe an element are merely to distinguish between similar elements and do not imply that the elements so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.

As used herein, the meaning of "a plurality" or "a plurality" is two or more unless otherwise specified.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The engineering machinery water system is characterized by comprising a water inlet channel (21), a cooling water tank (23), a pressure supply pump (25) and a spraying device (27), wherein a water inlet of the cooling water tank (23) is communicated with the water inlet channel (21), a water inlet of the pressure supply pump (25) is communicated with a water outlet of the cooling water tank (23), the spraying device (27) is connected with a water outlet of the pressure supply pump (25), and the cooling water tank (23) is used for cooling a hydraulic system of engineering machinery equipment.

2. The engineering machinery water system as claimed in claim 1, further comprising a water return waterway (29), wherein one end of the water return waterway (29) is communicated with a water outlet of the cooling water tank (23).

3. The engineering machinery water system as claimed in claim 2, wherein one end of the water return waterway (29) is further communicated between the water outlet of the pressure supply pump (25) and the spraying device (27) to allow water from the water outlet of the cooling water tank (23) to enter the spraying device (27) or water from the water outlet of the pressure supply pump (25) to enter the water return waterway (29).

4. A working machine water system as claimed in claim 3, characterized in that the cooling element (31) for cooling an electrical appliance is further provided between the pressure supply pump (25) and the spraying device (27).

5. The system of claim 4, further comprising a pressure supplementing pump (37), wherein a communication between the water outlet of the pressure supply pump (25) and the spraying device (27) and the water return waterway (29) is connected to a water inlet of the pressure supplementing pump (37).

6. The engineering machinery water system according to claim 5, wherein a first overflow valve (33) is further connected to a water path between the pressure supply pump (25) and the cooling element (31), the water path between the pressure supply pump (25) and the cooling element (31) is communicated with an inlet and a control port of the first overflow valve (33), and a water tank is communicated with an outlet of the first overflow valve (33); a water path between the pressure supplementing pump (37) and the spraying device (27) is also connected with a second overflow valve (39), the water path between the pressure supplementing pump (37) and the spraying device (27) is communicated with an inlet and a control port of the second overflow valve (39), and a water tank is communicated with an outlet of the second overflow valve (39).

7. An engineering machinery water system as claimed in claim 1, wherein the water inlet path (21) is provided with a filter (212), a first switch element (214) and a third overflow valve (216).

8. The construction machine water system as claimed in claim 1, wherein the spraying device (27) comprises an outer spraying mechanism (272) and an inner spraying mechanism (274), the outer spraying mechanism (272) and the inner spraying mechanism (274) being connected to a water outlet of the pressure supply pump (25).

9. Engineering machinery equipment, characterized by comprising a hydraulic system and an engineering machinery water system according to any one of claims 1-8, wherein the hydraulic system comprises a main oil tank (51), an auxiliary oil tank (52), an oil pump (53) and a hydraulic oil path (55), the oil pump (53) sucks oil from the main oil tank (51) and supplies oil to the hydraulic oil path (55), an oil return pipeline of the hydraulic oil path (55) is communicated with an oil inlet of the auxiliary oil tank (52), an oil outlet of the auxiliary oil tank (52) is connected to the main oil tank (51), and the cooling water tank (23) is arranged adjacent to the auxiliary oil tank (52) of the hydraulic system.

10. The work machine apparatus of claim 9, wherein the hydraulic system further comprises a filter device disposed in the auxiliary oil tank (52) or on an oil path between the auxiliary oil tank (52) and the return line.