CN219672961U - Hydraulic system of water supply and drainage equipment and water supply and drainage equipment thereof - Google Patents

Abstract

The utility model relates to a hydraulic system of water supply and drainage equipment and the water supply and drainage equipment thereof, wherein a first oil cylinder is communicated with a hydraulic oil tank through an oil way and is used for driving a cantilever crane mechanism on the water supply and drainage equipment to slide in a telescopic manner so as to be close to a water taking point or far from the water taking point; the second oil cylinder is communicated with the hydraulic oil tank through an oil way and is used for driving a multi-stage first telescopic drain pipe of a first water supply and drain mechanism on water supply and drain equipment to slide in a telescopic manner so as to be close to a water supply point or far from the water supply point; and the oil way communication mechanism is used for communicating an oil way between the first oil cylinder and the second oil cylinder, so that the first oil cylinder drives the cantilever crane mechanism on the water supply and drainage device to stretch and slide and simultaneously unlock the second oil cylinder, the cantilever crane mechanism drives the second oil cylinder to stretch and slide simultaneously, and the second oil cylinder drives the multistage first telescopic drain pipe of the first water supply and drainage mechanism to stretch and slide when stretching.

Description

Hydraulic system of water supply and drainage equipment and water supply and drainage equipment thereof

Technical Field

The utility model relates to the technical field of water supply and drainage emergency equipment, in particular to a hydraulic system of water supply and drainage equipment and the water supply and drainage equipment.

Background

Drainage vehicles are used as one of the most common emergency equipment, and are often used for drainage, flood control, drainage and other tasks, and are also used for irrigation in agriculture and urban greening. When the drainage vehicle is used, the drainage device on the drainage vehicle is used for draining ponding, ditches, rivers and the like in the pits.

The drainage vehicle in the prior art is used for draining accumulated water reaching the depressions through the extension and contraction of the arm support and the extension and contraction of the drainage pipe during operation, wherein the extension and contraction actions of the arm support and the drainage pipe are driven by the oil cylinders, oil is supplied to the oil cylinder driving the arm support and the oil cylinder driving the drainage pipe respectively through independent oil inlet and return pipelines at present, and when the oil cylinder driving the arm support and the oil cylinder driving the drainage pipe work simultaneously, the two oil cylinders are required to be controlled and operated respectively, so that the operation is complex and troublesome, and the timeliness of emergency is not facilitated.

Disclosure of Invention

Therefore, it is necessary to provide a hydraulic system of a water supply and drainage device and a water supply and drainage device thereof, which are used for solving the technical problems that in the prior art, when a drainage vehicle works, the drainage vehicle is stretched out and drawn back by an arm support and stretched back by a drainage pipe to drain accumulated water reaching a hollow place, the stretching actions of the arm support and the drainage pipe are driven by oil cylinders, oil is supplied to the oil cylinder driving the arm support and the oil cylinder driving the drainage pipe respectively through separate oil inlet and return pipelines, and when the oil cylinder driving the arm support and the oil cylinder driving the drainage pipe work simultaneously, the two oil cylinders are required to be controlled and operated respectively, so that the operation is complex and troublesome, and the timeliness of emergency is not facilitated.

To achieve the above object, the present inventors provide a hydraulic system of a water supply and drainage apparatus, comprising:

the hydraulic oil tank is used for storing hydraulic oil;

the first oil cylinder is communicated with the hydraulic oil tank through an oil way and is used for driving a cantilever crane mechanism on the water supply and drainage equipment to stretch and slide so as to be close to a water taking point or far from the water taking point;

the second oil cylinder is communicated with the hydraulic oil tank through an oil way and is used for driving a multi-stage first telescopic drain pipe of a first water supply and drain mechanism on water supply and drain equipment to slide in a telescopic manner so as to be close to a water supply point or far from the water supply point;

and the oil way communication mechanism is used for communicating an oil way between the first oil cylinder and the second oil cylinder, so that the first oil cylinder drives the cantilever crane mechanism on the water supply and drainage equipment to stretch and slide and simultaneously unlock the second oil cylinder, the cantilever crane mechanism stretches and slides and simultaneously drives the second oil cylinder to stretch and contract, and the second oil cylinder stretches and stretches to drive the multistage first telescopic drain pipe of the first water supply and drainage mechanism to stretch and slide.

As a preferable configuration of the present utility model, the hydraulic system of the water supply and drainage apparatus further includes:

the oil inlet of the first control valve is connected with the hydraulic oil tank through a pipeline, and the oil return port of the first control valve is connected with the hydraulic oil tank through a pipeline;

the oil inlet of the second control valve is connected with the hydraulic oil tank through a pipeline, and the oil return port of the second control valve is connected with the hydraulic oil tank through a pipeline;

one end of the first oil way is connected with the first control valve, and the other end of the first oil way is connected with the rodless cavity of the first oil cylinder;

one end of the second oil way is connected with the first control valve, and the other end of the second oil way is connected with a rod cavity of the first oil cylinder;

one end of the third oil way is connected with the second control valve, and the other end of the third oil way is connected with the rodless cavity of the second oil cylinder;

and one end of the fourth oil way is connected with the second control valve, and the other end of the fourth oil way is connected with the rod cavity of the second oil cylinder.

As a preferable structure of the present utility model, the oil passage communication mechanism includes a fifth oil passage, a sixth oil passage, a seventh oil passage, a first hydraulic lock, a second hydraulic lock, and a first shuttle valve;

One end of the fifth oil way is connected with the first oil way, and the other end of the fifth oil way is connected with the second oil way;

the first shuttle valve is arranged on the fifth oil path;

the first hydraulic lock is arranged on the fourth oil path, and the second hydraulic lock is arranged on the third oil path;

one end of the sixth oil way is connected with the first shuttle valve, and the other end of the sixth oil way is connected with the first hydraulic lock;

one end of the seventh oil way is connected with the sixth oil way, and the other end of the seventh oil way is connected with the second hydraulic lock.

As a preferable structure of the present utility model, the oil passage communication mechanism includes a fifth oil passage, a sixth oil passage, a seventh oil passage, a first hydraulic lock, a second hydraulic lock, and a first shuttle valve;

the hydraulic system of the water supply and drainage equipment further comprises an eighth oil way, a ninth oil way, a second shuttle valve and a third shuttle valve;

one end of the fifth oil way is connected with the first oil way, and the other end of the fifth oil way is connected with the second oil way;

the first shuttle valve is arranged on the fifth oil path;

one end of the eighth oil way is connected with the third oil way, and the other end of the eighth oil way is connected with the fourth oil way;

The second shuttle valve is arranged on the eighth oil path;

one end of the ninth oil way is connected with the first shuttle valve, and the other end of the ninth oil way is connected with the second shuttle valve;

the third shuttle valve is arranged on the ninth oil path;

the first hydraulic lock is arranged on the fourth oil path, and the second hydraulic lock is arranged on the third oil path;

one end of the sixth oil way is connected with the third shuttle valve, and the other end of the sixth oil way is connected with the first hydraulic lock;

one end of the seventh oil way is connected with the sixth oil way, and the other end of the seventh oil way is connected with the second hydraulic lock.

As a preferable structure of the present utility model, the hydraulic system of the water supply and drainage apparatus further includes a first oil inlet path, a second oil inlet path, a first oil return path, and a second oil return path;

one end of the first oil inlet path is connected with the hydraulic oil tank, and the other end of the first oil inlet path is connected with the first control valve;

one end of the second oil inlet path is connected with the first oil inlet path, and the other end of the second oil inlet path is connected with the second control valve;

one end of the first oil return path is connected with the hydraulic oil tank, and the other end of the first oil return path is connected with the first control valve;

One end of the second oil return path is connected with the first oil return path, and the other end of the second oil return path is connected with the second control valve.

As a preferable structure of the utility model, the first control valve is a three-position four-way electromagnetic reversing valve, and the second control valve is a three-position four-way electromagnetic reversing valve.

As an optimal structure of the utility model, at least two first oil cylinders are connected in parallel, and the at least two first oil cylinders are respectively used for driving the arm support mechanism on the water supply and drainage equipment to slide in a telescopic manner so as to be close to a water taking point or far away from the water taking point.

As a preferable structure of the present utility model, the water supply and drainage apparatus includes a vehicle body and a boom mechanism;

the arm support mechanism is arranged on the vehicle body and is hinged with the vehicle body;

the arm support mechanism comprises a turnover arm support and a first arm support;

the turnover arm support is hinged with the vehicle body, the first arm support is arranged on the turnover arm support, and the first arm support is connected with the turnover arm support in a sliding manner;

the first oil cylinder is used for driving the first arm support to stretch and slide on the overturning arm support.

As a preferable structure of the present utility model, the water supply and drainage apparatus further includes a first water supply and drainage mechanism;

the first water supply and drainage mechanism is arranged on the first arm support and is used for executing water drainage operation or/and water supply operation;

the first water supply and drainage mechanism is fixedly connected with the first arm support; or (b)

The first water supply and drainage mechanism is connected with the first arm support in a sliding mode.

As a preferable structure of the present utility model, the first water supply and drainage mechanism includes a multi-stage first telescopic drain pipe and a drain header pipe;

the drainage main pipe is arranged on the arm support mechanism;

the first telescopic drain pipes are nested in the drain header pipe, and the head ends of the first telescopic drain pipes are connected with one end of the drain header pipe in a sliding manner;

the multi-stage first telescopic drain pipe extends upwards along the length direction of the arm support mechanism; or (b)

The multi-stage first telescopic drain pipe extends downwards along the length direction of the arm support mechanism;

the first telescopic drain pipes are mutually nested and slidingly connected, the first telescopic drain pipes are mutually communicated, and the head ends of the first telescopic drain pipes are communicated with the drain header pipe;

One end of the second oil cylinder is arranged on the first arm support, and the other end of the second oil cylinder is arranged at the tail end of the multi-stage first telescopic drain pipe;

the second oil cylinder is used for driving the multistage first telescopic drain pipe to carry out telescopic sliding.

As a preferable structure of the present utility model, the multistage first telescopic drain pipe includes a first drain pipe and a second drain pipe;

the first drain pipe is connected to the inner arm of the drain header pipe in a nested manner, one end of the first drain pipe is connected with one end of the drain header pipe in a sliding manner, the second drain pipe is connected to the inner wall of the first drain pipe in a nested manner, and one end of the second drain pipe is connected with the other end of the first drain pipe in a sliding manner;

the other end of the second oil cylinder is arranged on the second drain pipe.

As a preferable structure of the utility model, the first water supply and drainage mechanism further comprises a multi-stage second telescopic drain pipe and a pump body;

the hydraulic system of the water supply and drainage equipment further comprises a plurality of third oil cylinders;

the multi-stage second telescopic drain pipe is arranged opposite to the multi-stage first telescopic drain pipe;

the multi-stage second telescopic drain pipe is nested in the drain main pipe, the head end of the multi-stage second telescopic drain pipe is in sliding connection with the other end of the drain main pipe, the tail end of the multi-stage second telescopic drain pipe is connected with the pump body, and the multi-stage second telescopic drain pipe extends downwards along the length direction of the arm support mechanism;

The multi-stage second telescopic drain pipes are mutually nested and slidingly connected, the multi-stage second telescopic drain pipes are mutually communicated, and the head end of the multi-stage second telescopic drain pipe is communicated with the drain header pipe;

the plurality of third oil cylinders are respectively arranged on the multi-stage second telescopic drain pipes and are respectively used for driving the multi-stage second telescopic drain pipes to perform telescopic sliding along the length direction of the arm support mechanism.

As a preferable structure of the present utility model, the multistage second telescopic drain pipe includes a third drain pipe and a fourth drain pipe;

the third drain pipe is connected to the inner arm of the drain header pipe in a nested mode, one end of the third drain pipe is connected with the other end of the drain header pipe in a sliding mode, the fourth drain pipe is connected to the inner wall of the third drain pipe in a nested mode, and one end of the fourth drain pipe is connected with the other end of the third drain pipe in a sliding mode.

Compared with the prior art, the beneficial effects of the technical scheme are as follows: according to the hydraulic system of the water supply and drainage equipment, when the emergency operation is carried out, the water supply and drainage equipment is driven to a flat zone of an operation point, the operation is carried out according to the field operation requirement, when the boom mechanism and the multi-stage first telescopic drain pipe of the first water supply and drainage mechanism are required to be slidingly extended, an oil way between the first oil cylinder and the second oil cylinder is communicated through an oil way communication mechanism of the hydraulic system, so that the boom mechanism on the water supply and drainage equipment is driven by the first oil cylinder to be slidingly extended downwards and the second oil cylinder is unlocked, the boom mechanism is driven to be slidingly extended downwards and the second oil cylinder is driven to be slidingly extended downwards, and the multi-stage first telescopic drain pipe of the first water supply and drainage mechanism is driven to be slidingly extended downwards when the second oil cylinder is in sliding extension downwards; at the moment, the arm support mechanism and the multistage first telescopic drain pipe of the first water supply and drainage mechanism simultaneously slide downwards to stretch out, the second oil cylinder does not need to be independently controlled to operate in the process, the second oil cylinder is unlocked while the first oil cylinder is controlled, the second oil cylinder is in a free state at the moment, the second oil cylinder slides downwards to stretch out under the driving of the arm support mechanism, the second oil cylinder slides downwards to stretch out so as to drive the multistage first telescopic drain pipe of the first water supply and drainage mechanism to slide downwards, the operation steps of independently controlling the second oil cylinder are reduced, the operation is simple and convenient, and the timeliness of emergency rescue is improved.

To achieve the above object, the present inventors have also provided a water supply and drainage apparatus including a hydraulic system of the water supply and drainage apparatus as set forth in any one of the above-mentioned inventors.

Compared with the prior art, the beneficial effects of the technical scheme are as follows: according to the water supply and drainage equipment, when the emergency operation is carried out, the water supply and drainage equipment is driven to a flat zone of an operation point, the operation is carried out according to the field operation requirement, when the boom mechanism and the multi-stage first telescopic drainage pipe of the first water supply and drainage mechanism are required to be extended in a sliding mode, an oil way between the first oil cylinder and the second oil cylinder is communicated through the oil way communication mechanism of the hydraulic system, so that the boom mechanism on the water supply and drainage equipment is driven by the first oil cylinder to be extended in a sliding mode and the second oil cylinder is unlocked, the boom mechanism is extended in a sliding mode and the second oil cylinder is driven to be extended in a sliding mode, and the multi-stage first telescopic drainage pipe of the first water supply and drainage mechanism is driven by the second oil cylinder to be extended in a sliding mode when the second oil cylinder is extended in a sliding mode; at the moment, the arm support mechanism and the multistage first telescopic drain pipe of the first water supply and drainage mechanism simultaneously slide downwards to stretch out, the second oil cylinder does not need to be independently controlled to operate in the process, the second oil cylinder is unlocked while the first oil cylinder is controlled, the second oil cylinder is in a free state at the moment, the second oil cylinder slides downwards to stretch out under the driving of the arm support mechanism, the second oil cylinder slides downwards to stretch out so as to drive the multistage first telescopic drain pipe of the first water supply and drainage mechanism to slide downwards, the operation steps of independently controlling the second oil cylinder are reduced, the operation is simple and convenient, and the timeliness of emergency rescue is improved.

The foregoing summary is merely an overview of the present utility model, and may be implemented according to the text and the accompanying drawings in order to make it clear to a person skilled in the art that the present utility model may be implemented, and in order to make the above-mentioned objects and other objects, features and advantages of the present utility model more easily understood, the following description will be given with reference to the specific embodiments and the accompanying drawings of the present utility model.

Drawings

The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of the present utility model and are not to be construed as limiting the utility model.

In the drawings of the specification:

fig. 1 is a schematic structural view of a water supply and drainage apparatus according to an embodiment;

FIG. 2 is one of the partial enlarged schematic views of FIG. 1;

FIG. 3 is a second enlarged partial schematic view of FIG. 1;

fig. 4 is a schematic view of a partial structure of a water supply and drainage apparatus according to an embodiment;

FIG. 5 is a schematic diagram of a hydraulic system according to an embodiment;

FIG. 6 is one of the schematic diagrams of the first cylinder extension of the hydraulic system according to the embodiments;

FIG. 7 is a second schematic illustration of the first cylinder extension of the hydraulic system according to the present embodiment;

FIG. 8 is one of the schematic diagrams of the retraction of the first cylinder of the hydraulic system according to the embodiments;

FIG. 9 is a second schematic illustration of retraction of a first cylinder of the hydraulic system according to the embodiment;

FIG. 10 is a schematic illustration of the second cylinder extension of the hydraulic system according to the present embodiment;

fig. 11 is a schematic diagram of retraction of a second cylinder of the hydraulic system according to an embodiment.

Reference numerals referred to in the above drawings are explained as follows:

1. the vehicle body is provided with a plurality of wheels,

2. the arm support mechanism is provided with a plurality of arm support mechanisms,

21. the arm support is turned over to turn over the arm,

22. a first arm support, 3, a first water supply and drainage mechanism,

31. a water draining main pipe is arranged on the water draining main pipe,

32. a multi-stage first telescopic drain pipe,

321. a first water discharge pipe, a second water discharge pipe,

322. a second water discharge pipe, which is connected with the first water discharge pipe,

33. a multi-stage second telescopic drain pipe,

331. a third water discharge pipe, which is provided with a water discharge pipe,

332. a fourth water discharge pipe, which is provided with a water discharge pipe,

34. the pump body is provided with a plurality of air inlets,

35. a third oil cylinder, 4, a hydraulic system,

41. the hydraulic oil tank is provided with a hydraulic oil tank,

401. the first oil inlet passage is provided with a first oil inlet,

402. a second oil inlet passage is arranged on the first oil inlet passage,

403. a first oil return path is arranged on the first oil return path,

404. a second oil return path is arranged on the second oil return path,

42. the first control valve is provided with a first control valve,

43. a second control valve is provided for controlling the flow of air through the second valve,

44. the first oil passage is provided with a first oil passage,

45. a second oil passage is arranged on the first oil passage,

46. the third oil passage is provided with a third oil passage,

47. a fourth oil passage is arranged on the first oil passage,

48. the first oil cylinder is provided with a first oil cylinder,

49. A second oil cylinder is arranged on the first oil cylinder,

410. an oil-way communication mechanism,

411. a fifth oil passage is provided, which is provided with a third oil passage,

412. a sixth oil passage is provided, which is provided with a third oil passage,

413. a seventh oil passage is provided, which is provided with a third oil passage,

414. the first hydraulic lock is used for locking the first hydraulic lock,

415. the second hydraulic lock is used for locking the second hydraulic lock,

416. the first shuttle valve may be configured to be actuated by a first actuator,

417. an eighth oil passage is provided, which is provided with a first oil passage,

418. a ninth oil passage is provided, which is provided with a first oil passage,

419. the second shuttle valve is provided with a second shuttle valve,

420. and a third shuttle valve.

Detailed Description

In order to describe the possible application scenarios, technical principles, practical embodiments, and the like of the present application in detail, the following description is made with reference to the specific embodiments and the accompanying drawings. The embodiments described herein are only for more clearly illustrating the technical aspects of the present application, and thus are only exemplary and not intended to limit the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of the phrase "in various places in the specification are not necessarily all referring to the same embodiment, nor are they particularly limited to independence or relevance from other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment may be combined in any manner to form a corresponding implementable technical solution.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application pertains; the use of related terms herein is for the purpose of describing particular embodiments only and is not intended to limit the application.

In the description of the present application, the term "and/or" is a representation for describing a logical relationship between objects, which means that three relationships may exist, for example a and/or B, representing: there are three cases, a, B, and both a and B. In addition, the character "/" herein generally indicates that the front-to-back associated object is an "or" logical relationship.

In the present application, terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual number, order, or sequence of such entities or operations.

Without further limitation, the use of the terms "comprising," "including," "having," or other like terms in this specification is intended to cover a non-exclusive inclusion, such that a process, method, or article of manufacture that comprises a list of elements does not include additional elements but may include other elements not expressly listed or inherent to such process, method, or article of manufacture.

As in the understanding of "review guidelines," the expressions "greater than", "less than", "exceeding" and the like are understood to exclude this number in the present application; the expressions "above", "below", "within" and the like are understood to include this number. Furthermore, in the description of embodiments of the present application, the meaning of "a plurality of" is two or more (including two), and similarly, the expression "a plurality of" is also to be understood as such, for example, "a plurality of" and the like, unless specifically defined otherwise.

In the description of embodiments of the present application, spatially relative terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," etc., are used herein as a basis for the description of the embodiments or as a basis for the description of the embodiments, and are not intended to indicate or imply that the devices or components referred to must have a particular position, a particular orientation, or be configured or operated in a particular orientation and therefore should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "affixed," "disposed," and the like as used in the description of embodiments of the application should be construed broadly. For example, the "connection" may be a fixed connection, a detachable connection, or an integral arrangement; the device can be mechanically connected, electrically connected and communicated; it can be directly connected or indirectly connected through an intermediate medium; which may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains according to circumstances.

Referring to fig. 1 to 11, the present embodiment relates to a hydraulic system 4 of a water supply and drainage apparatus, including a hydraulic oil tank 41, a first oil cylinder 48, a second oil cylinder 49, and an oil path communication mechanism 410, wherein the hydraulic oil tank 41 is used for storing hydraulic oil; further, the hydraulic system 4 further includes a hydraulic pump, which is disposed on a hydraulic line of the hydraulic system 4. The first oil cylinder 48 is communicated with the hydraulic oil tank 41 through an oil path to form a hydraulic loop, and the first oil cylinder 48 is used for driving the arm support mechanism 2 on the water supply and drainage equipment to slide in a telescopic manner so as to be close to a water taking point or far away from the water taking point, so that drainage operation is facilitated. The second oil cylinder 49 is communicated with the hydraulic oil tank 41 through an oil way to form a hydraulic loop, and the second oil cylinder 49 is used for driving the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 on the water supply and drain equipment to perform telescopic sliding so as to be close to a water supply point or far away from the water supply point, thereby being convenient for supplying water to a high place. The oil way communication mechanism 410 is used for communicating an oil way between the first oil cylinder 48 and the second oil cylinder 49, so that the first oil cylinder 48 drives the boom mechanism 2 on the water supply and drainage equipment to stretch and slide and unlock the second oil cylinder 49, independent control operation on the second oil cylinder 49 is not needed, the second oil cylinder 49 is unlocked while the first oil cylinder 48 is controlled, operation steps are reduced, operation is simple and convenient, and the timeliness of emergency rescue is improved. The arm support mechanism 2 is enabled to stretch and slide and simultaneously drives the second oil cylinder 49 to stretch and slide, and when the second oil cylinder 49 stretches and contracts, the multistage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 is driven to stretch and slide.

Specifically, in the hydraulic system 4 of the water supply and drainage device in this embodiment, as shown in fig. 1 to 11, during emergency operation, the water supply and drainage device is driven to a flat zone of an operation point, and is operated according to the requirement of field operation, when the boom mechanism 2 and the multi-stage first telescopic drainage pipe 32 of the first water supply and drainage mechanism 3 need to be slidingly extended, an oil path between the first oil cylinder 48 and the second oil cylinder 49 is communicated through an oil path communication mechanism 410 of the hydraulic system 4, so that the first oil cylinder 48 drives the boom mechanism 2 on the water supply and drainage device to be slidingly extended downwards and simultaneously unlocks the second oil cylinder 49, so that the boom mechanism 2 is slidingly extended downwards and simultaneously drives the second oil cylinder 49 to be slidingly extended downwards, and the second oil cylinder 49 drives the multi-stage first telescopic drainage pipe 32 of the first water supply and drainage mechanism 3 to be slidingly extended downwards when being slidingly extended; at this time, the arm support mechanism 2 and the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 simultaneously slide downwards to extend, in the process, the second oil cylinder 49 does not need to be independently controlled to operate, the second oil cylinder 49 is unlocked while the first oil cylinder 48 is controlled, the second oil cylinder 49 is in a free state at this time, the second oil cylinder 49 slides downwards to extend under the driving of the arm support mechanism 2, and the second oil cylinder 49 slides downwards to extend so as to drive the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 to slide downwards to extend, so that the operation steps for independently controlling the second oil cylinder 49 are reduced, the operation is simple and convenient, and the timeliness of emergency is improved. In this embodiment, when the multi-stage first telescopic drain pipe 32 of the boom mechanism 2 and the first water supply and drain mechanism 3 needs to be slidingly retracted, the principle is the same as that of the sliding extension, and the description thereof is omitted.

Further, in some embodiments, as shown in fig. 5 to 11, at least two first cylinders 48 are connected in parallel, and at least two first cylinders 48 are respectively used for driving the boom mechanism 2 on the water supply and drainage device to slide in a telescopic manner so as to be close to the water taking point or far from the water taking point. Preferably, in the present embodiment, as shown in fig. 5 to 11, there are two first cylinders 48, and in other embodiments, there may be one or more than two first cylinders 48. In the present embodiment, the number of first cylinders 48 is not limited.

Further, in some embodiments, as shown in fig. 5 to 11, the hydraulic system 4 of the water supply and drainage apparatus further includes:

the first control valve 42, an oil inlet of the first control valve 42 is connected with the hydraulic oil tank 41 through a pipeline, and an oil return port of the first control valve 42 is connected with the hydraulic oil tank 41 through a pipeline; preferably, in this embodiment, as shown in fig. 5 to 11, the first control valve 42 is a three-position four-way electromagnetic directional valve.

The oil inlet of the second control valve 43 is connected with the hydraulic oil tank 41 through a pipeline, and the oil return port of the second control valve 43 is connected with the hydraulic oil tank 41 through a pipeline; preferably, in this embodiment, as shown in fig. 5 to 11, the second control valve 43 is a three-position four-way electromagnetic directional valve.

A first oil path 44, wherein one end of the first oil path 44 is connected with the first control valve 42, and the other end of the first oil path 44 is connected with a rodless cavity of the first oil cylinder 48;

a second oil path 45, wherein one end of the second oil path 45 is connected with the first control valve 42, and the other end of the second oil path 45 is connected with a rod cavity of the first oil cylinder 48;

a third oil path 46, wherein one end of the third oil path 46 is connected to the second control valve 43, and the other end of the third oil path 46 is connected to a rodless chamber of the second cylinder 49;

and a fourth oil path 47, wherein one end of the fourth oil path 47 is connected with the second control valve 43, and the other end of the fourth oil path 47 is connected with the rod cavity of the second oil cylinder 49.

Further, in some embodiments, as shown in fig. 6 and 8, the oil communication mechanism 410 includes a fifth oil passage 411, a sixth oil passage 412, a seventh oil passage 413, a first hydraulic lock 414, a second hydraulic lock 415, and a first shuttle valve 416; one end of the fifth oil passage 411 is connected to the first oil passage 44, and the other end of the fifth oil passage 411 is connected to the second oil passage 45; the first shuttle valve 416 is disposed on the fifth oil passage 411; the first hydraulic lock 414 is disposed on the fourth oil passage 47, and the second hydraulic lock 415 is disposed on the third oil passage 46; one end of the sixth oil path 412 is connected to the first shuttle valve 416, and the other end of the sixth oil path 412 is connected to the first hydraulic lock 414; one end of the seventh oil passage 413 is connected to the sixth oil passage 412, and the other end of the seventh oil passage 413 is connected to the second hydraulic lock 415. Specifically, in this embodiment, as shown in fig. 6 and 8, the boom mechanism 2 and the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 simultaneously slide and extend downward, in this process, the second oil cylinder 49 does not need to be separately controlled and operated, the second oil cylinder 49 is unlocked while the first oil cylinder 48 is controlled, the second oil cylinder 49 is in a free state at this time, the second oil cylinder 49 slides and extends downward under the driving of the boom mechanism 2, and the second oil cylinder 49 slides and extends downward so as to drive the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 to slide and extend downward, so that the operation steps for separately controlling the second oil cylinder 49 are reduced, the operation is simple and convenient, and the timeliness of emergency is improved. It should be noted that the structure of the oil passage communication mechanism 410 of the present embodiment is not limited thereto, and those skilled in the art can select other suitable oil passage communication mechanisms 410 according to the teachings of the present embodiment.

Specifically, in the present embodiment, as shown in fig. 7, 9, 10 and 11, the oil passage communication mechanism 410 includes a fifth oil passage 411, a sixth oil passage 412, a seventh oil passage 413, a first hydraulic lock 414, a second hydraulic lock 415 and a first shuttle valve 416; the hydraulic system 4 of the water supply and drainage apparatus further includes an eighth oil passage 417, a ninth oil passage 418, a second shuttle valve 419, and a third shuttle valve 420; one end of the fifth oil passage 411 is connected to the first oil passage 44, and the other end of the fifth oil passage 411 is connected to the second oil passage 45; the first shuttle valve 416 is disposed on the fifth oil passage 411; one end of the eighth oil passage 417 is connected to the third oil passage 46, and the other end of the eighth oil passage 417 is connected to the fourth oil passage 47; the second shuttle valve 419 is provided on the eighth oil passage 417; one end of the ninth oil passage 418 is connected to the first shuttle valve 416, and the other end of the ninth oil passage 418 is connected to the second shuttle valve 419; the third shuttle valve 420 is disposed on the ninth oil passage 418; the first hydraulic lock 414 is disposed on the fourth oil passage 47, and the second hydraulic lock 415 is disposed on the third oil passage 46; one end of the sixth oil path 412 is connected to the third shuttle valve 420, and the other end of the sixth oil path 412 is connected to the first hydraulic lock 414; one end of the seventh oil passage 413 is connected to the sixth oil passage 412, and the other end of the seventh oil passage 413 is connected to the second hydraulic lock 415. Specifically, in this embodiment, as shown in fig. 7, 9, 10 and 11, the boom mechanism 2 and the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 slide and stretch out simultaneously, in this process, the second oil cylinder 49 does not need to be controlled separately, the second oil cylinder 49 is unlocked while the first oil cylinder 48 is controlled, the second oil cylinder 49 is in a free state at this time, the second oil cylinder 49 slides and stretches out downwards under the driving of the boom mechanism 2, and the second oil cylinder 49 slides and stretches out downwards so as to drive the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 to slide and stretch out downwards, so that the operation steps for controlling the second oil cylinder 49 separately are reduced, the operation is simple and convenient, and the timeliness of emergency is improved. And when the second oil cylinder 49 is independently operated to drive the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 to slide upwards to extend, the working state of the first oil cylinder 48 is not affected. It should be noted that the structure of the oil passage communication mechanism 410 of the present embodiment is not limited thereto, and those skilled in the art can select other suitable oil passage communication mechanisms 410 according to the teachings of the present embodiment.

Further, in some embodiments, as shown in fig. 5 to 11, the hydraulic system 4 of the water supply and drainage apparatus further includes a first oil inlet path 401, a second oil inlet path 402, a first oil return path 403, and a second oil return path 404; one end of the first oil inlet path 401 is connected with the hydraulic oil tank 41, and the other end of the first oil inlet path 401 is connected with the first control valve 42; one end of the second oil inlet path 402 is connected with the first oil inlet path 401, and the other end of the second oil inlet path 402 is connected with the second control valve 43; one end of the first oil return path 403 is connected to the hydraulic oil tank 41, and the other end of the first oil return path 403 is connected to the first control valve 42; one end of the second oil return path 404 is connected to the first oil return path 403, and the other end of the second oil return path 404 is connected to the second control valve 43.

Further, in some embodiments, as shown in fig. 1 to 4, the water supply and drainage device includes a vehicle body 1 and a boom mechanism 2; the vehicle body 1 is used for bearing rescue equipment or/and an arm support mechanism 2 and a first water supply and drainage mechanism 3 on the whole vehicle. The cantilever crane mechanism 2 is arranged on the vehicle body 1, and the cantilever crane mechanism 2 is hinged with the vehicle body 1 so as to enable the cantilever crane mechanism 2 to be far away from the vehicle body 1 and close to a water taking point. Specifically, in this embodiment, as shown in fig. 1 to 4, the arm support mechanism 2 includes a tilting arm support 21 and a first arm support 22; the turnover arm support 21 is hinged with the vehicle body 1, the first arm support 22 is arranged on the turnover arm support 21, and the first arm support 22 is in sliding connection with the turnover arm support 21 so as to be close to a drainage point, and drainage operation is facilitated. The first oil cylinder 48 is configured to drive the first arm support 22 to perform telescopic sliding on the overturning arm support 21, and unlock the second oil cylinder 49 through the oil path communication mechanism 410 while communicating an oil path between the first oil cylinder 48 and the second oil cylinder 49, so that the first arm support 22 performs telescopic sliding and drives the second oil cylinder 49 to perform telescopic sliding, and when the second oil cylinder 49 performs telescopic sliding, the second oil cylinder 49 drives the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 to perform telescopic sliding. In other embodiments, there are two first arms 22, and the two arms are slidably connected. It should be noted that the structure of the boom mechanism 2 of the present embodiment is not limited thereto, and those skilled in the art may select other suitable boom mechanisms 2 according to the teachings of the present embodiment.

Further, in certain embodiments, as shown in fig. 1 to 4, the water supply and drainage apparatus further includes a first water supply and drainage mechanism 3; the first water supply and drainage mechanism 3 is arranged on the first arm support 22, and the first water supply and drainage mechanism 3 is used for executing water drainage operation or/and water supply operation, and the operation mode is selected according to actual requirements of an emergency scene. The first water supply and drainage mechanism 3 is fixedly connected with the first arm support 22; or in other embodiments, the first water supply and drain mechanism 3 is slidingly connected with the first arm support 22.

Further, in some embodiments, as shown in fig. 1 to 4, the first water supply and drain mechanism 3 includes a multi-stage first telescopic drain pipe 32 and a drain header pipe 31; the drain header 31 is arranged on the first arm support 22 of the arm support mechanism 2; the multi-stage first telescopic drain pipe 32 is nested in the drain main pipe 31, and the head end of the multi-stage first telescopic drain pipe 32 is slidably connected with one end of the drain main pipe 31; specifically, in the present embodiment, when the second cylinder 49 is controlled to be operated independently, the multi-stage first telescopic drain pipe 32 extends upward along the length direction of the boom mechanism 2; when the first cylinder 48 is individually controlled to be operated, the multi-stage first telescopic drain pipe 32 is extended downward in the length direction of the boom mechanism 2. The first telescopic drain pipes 32 are mutually nested and slidingly connected, the first telescopic drain pipes 32 are mutually communicated, and the head end of the first telescopic drain pipe 32 is communicated with the drain header pipe 31; one end of the second oil cylinder 49 is arranged on the first arm support 22, and the other end of the second oil cylinder 49 is arranged at the tail end of the multi-stage first telescopic drain pipe 32; the second oil cylinder 49 is used for driving the multi-stage first telescopic drain pipe 32 to slide in a telescopic manner. The structure of the first water supply and drainage mechanism 3 of the present embodiment is not limited to this, and those skilled in the art can select other suitable first water supply and drainage mechanisms 3 according to the teachings of the present embodiment.

Specifically, in the present embodiment, as shown in fig. 1 to 4, the multi-stage first telescopic drain pipe 32 includes a first drain pipe 321 and a second drain pipe 322; the first drain pipe 321 is connected to the inner arm of the drain pipe main 31 in a nested manner, one end of the first drain pipe 321 is connected to one end of the drain pipe main 31 in a sliding manner, the second drain pipe 322 is connected to the inner wall of the first drain pipe 321 in a nested manner, and one end of the second drain pipe 322 is connected to the other end of the first drain pipe 321 in a sliding manner; the other end of the second oil cylinder 49 is disposed on the second drain pipe 322. In the present embodiment, the number of the multi-stage first telescopic drain pipes 32 is not limited, and the corresponding number of drain pipes is set according to actual needs.

Further, in some embodiments, as shown in fig. 1 to 4, the first water supply and drainage mechanism 3 further includes a multi-stage second telescopic drainage pipe 33 and a pump body 34; the hydraulic system 4 of the water supply and drainage device further comprises a plurality of third oil cylinders 35; the multi-stage second telescopic drain pipe 33 is arranged opposite to the multi-stage first telescopic drain pipe 32; the multi-stage second telescopic drain pipe 33 is nested in the drain header pipe 31, the head end of the multi-stage second telescopic drain pipe 33 is slidably connected with the other end of the drain header pipe 31, the tail end of the multi-stage second telescopic drain pipe 33 is connected with the pump body 34, and the multi-stage second telescopic drain pipe 33 extends downwards along the length direction of the boom mechanism 2 so as to be close to a drain point. The multi-stage second telescopic drain pipes 33 are mutually nested and slidingly connected, the multi-stage second telescopic drain pipes 33 are mutually communicated, and the head end of the multi-stage second telescopic drain pipe 33 is communicated with the drain header pipe 31; the plurality of third oil cylinders 35 are respectively arranged on the multi-stage second telescopic drain pipe 33, and the plurality of third oil cylinders 35 are respectively used for driving the multi-stage second telescopic drain pipe 33 to perform telescopic sliding along the length direction of the boom mechanism 2. The structure of the first water supply and drainage mechanism 3 of the present embodiment is not limited to this, and those skilled in the art can select other suitable first water supply and drainage mechanisms 3 according to the teachings of the present embodiment.

Specifically, in the present embodiment, as shown in fig. 1 to 4, the multi-stage second telescopic drain pipe 33 includes a third drain pipe 331 and a fourth drain pipe 332; the third drain pipe 331 is connected to the inner arm of the drain pipe 31 in a nested manner, one end of the third drain pipe 331 is connected to the other end of the drain pipe 31 in a sliding manner, the fourth drain pipe 332 is connected to the inner wall of the third drain pipe 331 in a nested manner, and one end of the fourth drain pipe 332 is connected to the other end of the third drain pipe 331 in a sliding manner so as to be close to a drain point. In the present embodiment, the number of the multi-stage second telescopic drain pipes 33 is not limited, and the corresponding number of drain pipes is set according to actual needs.

Specifically, in the present embodiment, as shown in fig. 1 to 11, the control method of the hydraulic system 4 of the water supply and drainage apparatus includes the steps of:

s10: the first cylinder 48 extends to control the YV2 of the first control valve 42 to be electrified, the valve core of the first control valve 42 acts, and the hydraulic oil flows to the first oil passage 44 and the fifth oil passage 411 as shown in fig. 6 and 7; the hydraulic oil of the first oil way 44 flows into the rodless cavity of the first oil cylinder 48 so that the piston rod of the first oil cylinder 48 extends out, and the piston rod of the first oil cylinder 48 extends out to drive the first arm support 22 of the arm support mechanism 2 to extend downwards; the hydraulic oil of the fifth oil passage 411 flows to the sixth oil passage 412 and the seventh oil passage 413 through the first shuttle valve 416, the hydraulic oil of the sixth oil passage 412 flows to V1 of the first hydraulic lock 414, when V1 of the first hydraulic lock 414 flows into the hydraulic oil, the C2 and V2 of the first hydraulic lock 414 are communicated, and the hydraulic oil flows from the fourth oil passage 47 into the rod chamber of the second cylinder 49; meanwhile, the hydraulic oil in the seventh oil path 413 flows to V3 of the second hydraulic lock 415, when V3 of the second hydraulic lock 415 flows into the hydraulic oil, so that the C4 and V4 of the second hydraulic lock 415 are communicated, the hydraulic oil flows from the third oil path 46 into the rodless cavity of the second oil cylinder 49, at this time, the hydraulic oil flows between the rod-containing cavity and the rodless cavity of the second oil cylinder 49 to be in a free state, the second oil cylinder 49 is automatically unlocked, when the first oil cylinder 48 drives the first arm support 22 of the arm support mechanism 2 to extend downwards, the piston rod of the second oil cylinder 49 is driven to extend downwards, and when the piston rod of the second oil cylinder 49 extends, the multistage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 is driven to extend downwards, and in the range of travel, the second oil cylinder 49 extends along with the extension of the first oil cylinder 48, and the extension length is kept the same.

The arm support mechanism 2 and the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 simultaneously slide downwards to extend, the second oil cylinder 49 does not need to be independently controlled and operated in the process, the second oil cylinder 49 is unlocked while the first oil cylinder 48 is controlled, the second oil cylinder 49 is in a free state, the second oil cylinder 49 slides downwards to extend under the driving of the arm support mechanism 2, the second oil cylinder 49 slides downwards to extend so as to drive the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 to slide downwards, the operation steps for independently controlling the second oil cylinder 49 are reduced, the operation is simple and convenient, and the timeliness of emergency is improved.

S20: the first cylinder 48 is retracted, the YV1 of the first control valve 42 is controlled to be electrified, the valve core of the first control valve 42 acts, the hydraulic oil flows to the second oil passage 45 and the fifth oil passage 411 as shown in fig. 8 and 9; the hydraulic oil of the second oil way 45 flows into the rod cavity of the first oil cylinder 48 so as to retract the piston rod of the first oil cylinder 48, and the piston rod of the first oil cylinder 48 retracts so as to drive the first arm support 22 of the arm support mechanism 2 to retract upwards; the hydraulic oil of the fifth oil passage 411 flows to the sixth oil passage 412 and the seventh oil passage 413 through the first shuttle valve 416, the hydraulic oil of the sixth oil passage 412 flows to V1 of the first hydraulic lock 414, when V1 of the first hydraulic lock 414 flows into the hydraulic oil, the C2 and V2 of the first hydraulic lock 414 are communicated, and the hydraulic oil flows from the fourth oil passage 47 into the rod chamber of the second cylinder 49; meanwhile, the hydraulic oil in the seventh oil path 413 flows to V3 of the second hydraulic lock 415, when V3 of the second hydraulic lock 415 flows into the hydraulic oil, so that the C4 and V4 of the second hydraulic lock 415 are communicated, the hydraulic oil flows into the rodless cavity of the second oil cylinder 49 from the third oil path 46, at this time, the hydraulic oil flows between the rod cavity and the rodless cavity of the second oil cylinder 49 to be in a free state, the second oil cylinder 49 is automatically unlocked, when the first oil cylinder 48 drives the first arm support 22 of the arm support mechanism 2 to retract upwards, the piston rod of the second oil cylinder 49 is driven to retract, and when the piston rod of the second oil cylinder 49 is retracted, the multistage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 is driven to retract upwards, and in the range of travel, the second oil cylinder 49 is retracted along with the retraction of the first oil cylinder 48, and the retraction length is kept the same.

The arm support mechanism 2 and the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 simultaneously slide upwards and retract, the second oil cylinder 49 does not need to be independently controlled and operated in the process, the second oil cylinder 49 is unlocked while the first oil cylinder 48 is controlled, the second oil cylinder 49 is in a free state at the moment, the second oil cylinder 49 slides upwards and retracts under the driving of the arm support mechanism 2, the second oil cylinder 49 slides upwards and retracts to drive the multi-stage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 to slide upwards and retract, the operation steps for independently controlling the second oil cylinder 49 are reduced, the operation is simple and convenient, and the timeliness of emergency is improved.

S30: the second cylinder 49 extends to control the YV3 of the second control valve 43 to be energized, the second control valve 43 operates as a spool, and hydraulic oil flows to the third oil passage 46 and the eighth oil passage 417 as shown in fig. 10; the hydraulic oil of the eighth oil passage 417 flows to the ninth oil passage 418 through the second shuttle valve 419, the hydraulic oil of the ninth oil passage 418 flows to the sixth oil passage 412 and the seventh oil passage 413 through the third shuttle valve 420, the hydraulic oil of the seventh oil passage 413 flows to V3 of the second hydraulic lock 415, when V3 of the second hydraulic lock 415 flows into the hydraulic oil, the C4 and V4 of the second hydraulic lock 415 are communicated, the hydraulic oil flows from the third oil passage 46 into the rodless chamber of the second oil cylinder 49, and at this time, the hydraulic oil of the third oil passage 46 flows into the rodless chamber of the second oil cylinder 49 through the second hydraulic lock 415 so that the piston rod of the second oil cylinder 49 is extended, and the piston rod of the second oil cylinder 49 is extended so as to drive the multistage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 to extend upward; meanwhile, the hydraulic oil in the sixth oil path 412 flows to V1 of the first hydraulic lock 414, when V1 of the first hydraulic lock 414 flows into the hydraulic oil, so that the C2 and V2 of the first hydraulic lock 414 are communicated, the first hydraulic lock 414 is unlocked, the hydraulic oil in the second oil cylinder 49 flows out from the rod cavity of the second oil cylinder 49 to the fourth oil path 47, and the hydraulic oil flows back into the hydraulic oil tank 41 from the fourth oil path 47. Since the pressure of the hydraulic oil flowing out of the rod chamber of the second cylinder 49 is large, the hydraulic oil flowing out of the rod chamber of the second cylinder 49 is caused to flow back from the fourth oil passage 47 to the hydraulic oil tank 41. When the second cylinder 49 is independently controlled to operate, the operating state of the second cylinder 49 is extended, and the operating state of the first cylinder 48 is not affected.

S40: the second cylinder 49 is retracted, the YV4 of the second control valve 43 is controlled to be electrified, the valve core of the second control valve 43 acts, the hydraulic oil flows to the fourth oil passage 47 and the eighth oil passage 417 as shown in fig. 11; the hydraulic oil of the eighth oil passage 417 flows to the ninth oil passage 418 through the second shuttle valve 419, the hydraulic oil of the ninth oil passage 418 flows to the sixth oil passage 412 and the seventh oil passage 413 through the third shuttle valve 420, the hydraulic oil of the sixth oil passage 412 flows to V1 of the first hydraulic lock 414, when V1 of the first hydraulic lock 414 flows into the hydraulic oil, the C2 and V2 of the first hydraulic lock 414 are communicated, the first hydraulic lock 414 is unlocked, the hydraulic oil flows into the rod cavity of the second oil cylinder 49 from the fourth oil passage 47, at this time, the hydraulic oil of the fourth oil passage 47 flows into the rod cavity of the second oil cylinder 49 through the first hydraulic lock 414, so that the piston rod of the second oil cylinder 49 is retracted, and the piston rod of the second oil cylinder 49 is retracted, so that the multistage first telescopic drain pipe 32 of the first water supply and drain mechanism 3 is driven to retract downward; meanwhile, when the hydraulic oil in the seventh oil passage 413 flows to V3 of the second hydraulic lock 415, when the V3 of the second hydraulic lock 415 flows into the hydraulic oil, the C4 and the V4 of the second hydraulic lock 415 are communicated, the second hydraulic lock 415 is unlocked, the hydraulic oil in the second oil cylinder 49 flows out of the rodless cavity of the second oil cylinder 49 to the third oil passage 46, and the hydraulic oil flows back into the hydraulic oil tank 41 from the third oil passage 46. Since the pressure of the hydraulic oil flowing out of the rodless chamber of the second cylinder 49 is large, the hydraulic oil flowing out of the rodless chamber of the second cylinder 49 is caused to flow back from the third oil passage 46 to the hydraulic oil tank 41. When the second cylinder 49 is independently controlled to operate, the working state of the second cylinder 49 alone is retracted, and the working state of the first cylinder 48 is not affected.

Referring to fig. 1 to 11, the present embodiment further relates to a water supply and drainage apparatus, including the hydraulic system 4 of the water supply and drainage apparatus according to any one of the above embodiments. Wherein the hydraulic system 4 is used for providing hydraulic power for the arm support mechanism 2 and the first water supply and drainage mechanism 3; specifically, in this embodiment, the water supply and drainage device is a water supply and drainage vehicle, and in other embodiments, the water supply and drainage device may also be a water supply and drainage mobile pump station or the like. The water supply and drainage vehicle can be, but is not limited to, a drainage emergency vehicle, a movable pump station, a primary and secondary drainage emergency vehicle, a water taking vehicle, a pipe laying vehicle, a crawler for well operation, a tunnel movable drainage device, a carriage type drainage device or the like. The water supply and drainage vehicle can be a gasoline vehicle, a diesel vehicle or a pure electric vehicle, and also can be a hybrid electric vehicle or a range-extended vehicle.

Finally, it should be noted that, although the embodiments have been described in the text and the drawings, the scope of the application is not limited thereby. The technical scheme generated by replacing or modifying the equivalent structure or equivalent flow by utilizing the content recorded in the text and the drawings of the specification based on the essential idea of the application, and the technical scheme of the embodiment directly or indirectly implemented in other related technical fields are included in the patent protection scope of the application.

Claims (14)

1. A hydraulic system of a water supply and drainage apparatus, comprising:

the hydraulic oil tank is used for storing hydraulic oil;

the first oil cylinder is communicated with the hydraulic oil tank through an oil way and is used for driving a cantilever crane mechanism on the water supply and drainage equipment to stretch and slide so as to be close to a water taking point or far from the water taking point;

the second oil cylinder is communicated with the hydraulic oil tank through an oil way and is used for driving a multi-stage first telescopic drain pipe of a first water supply and drain mechanism on water supply and drain equipment to slide in a telescopic manner so as to be close to a water supply point or far from the water supply point;

and the oil way communication mechanism is used for communicating an oil way between the first oil cylinder and the second oil cylinder, so that the first oil cylinder drives the cantilever crane mechanism on the water supply and drainage equipment to stretch and slide and simultaneously unlock the second oil cylinder, the cantilever crane mechanism stretches and slides and simultaneously drives the second oil cylinder to stretch and contract, and the second oil cylinder stretches and stretches to drive the multistage first telescopic drain pipe of the first water supply and drainage mechanism to stretch and slide.

2. The hydraulic system of a water supply and drainage apparatus of claim 1, wherein: the hydraulic system of the water supply and drainage device further includes:

The oil inlet of the first control valve is connected with the hydraulic oil tank through a pipeline, and the oil return port of the first control valve is connected with the hydraulic oil tank through a pipeline;

the oil inlet of the second control valve is connected with the hydraulic oil tank through a pipeline, and the oil return port of the second control valve is connected with the hydraulic oil tank through a pipeline;

one end of the first oil way is connected with the first control valve, and the other end of the first oil way is connected with the rodless cavity of the first oil cylinder;

one end of the second oil way is connected with the first control valve, and the other end of the second oil way is connected with a rod cavity of the first oil cylinder;

one end of the third oil way is connected with the second control valve, and the other end of the third oil way is connected with the rodless cavity of the second oil cylinder;

and one end of the fourth oil way is connected with the second control valve, and the other end of the fourth oil way is connected with the rod cavity of the second oil cylinder.

3. The hydraulic system of a water supply and drainage apparatus of claim 2, wherein: the oil way communication mechanism comprises a fifth oil way, a sixth oil way, a seventh oil way, a first hydraulic lock, a second hydraulic lock and a first shuttle valve;

One end of the fifth oil way is connected with the first oil way, and the other end of the fifth oil way is connected with the second oil way;

the first shuttle valve is arranged on the fifth oil path;

the first hydraulic lock is arranged on the fourth oil path, and the second hydraulic lock is arranged on the third oil path;

one end of the sixth oil way is connected with the first shuttle valve, and the other end of the sixth oil way is connected with the first hydraulic lock;

one end of the seventh oil way is connected with the sixth oil way, and the other end of the seventh oil way is connected with the second hydraulic lock.

4. The hydraulic system of a water supply and drainage apparatus of claim 2, wherein: the oil way communication mechanism comprises a fifth oil way, a sixth oil way, a seventh oil way, a first hydraulic lock, a second hydraulic lock and a first shuttle valve;

the hydraulic system of the water supply and drainage equipment further comprises an eighth oil way, a ninth oil way, a second shuttle valve and a third shuttle valve;

one end of the fifth oil way is connected with the first oil way, and the other end of the fifth oil way is connected with the second oil way;

the first shuttle valve is arranged on the fifth oil path;

one end of the eighth oil way is connected with the third oil way, and the other end of the eighth oil way is connected with the fourth oil way;

The second shuttle valve is arranged on the eighth oil path;

one end of the ninth oil way is connected with the first shuttle valve, and the other end of the ninth oil way is connected with the second shuttle valve;

the third shuttle valve is arranged on the ninth oil path;

the first hydraulic lock is arranged on the fourth oil path, and the second hydraulic lock is arranged on the third oil path;

one end of the sixth oil way is connected with the third shuttle valve, and the other end of the sixth oil way is connected with the first hydraulic lock;

one end of the seventh oil way is connected with the sixth oil way, and the other end of the seventh oil way is connected with the second hydraulic lock.

5. The hydraulic system of a water supply and drainage apparatus of claim 2, wherein: the hydraulic system of the water supply and drainage equipment further comprises a first oil inlet path, a second oil inlet path, a first oil return path and a second oil return path;

one end of the first oil inlet path is connected with the hydraulic oil tank, and the other end of the first oil inlet path is connected with the first control valve;

one end of the second oil inlet path is connected with the first oil inlet path, and the other end of the second oil inlet path is connected with the second control valve;

One end of the first oil return path is connected with the hydraulic oil tank, and the other end of the first oil return path is connected with the first control valve;

one end of the second oil return path is connected with the first oil return path, and the other end of the second oil return path is connected with the second control valve.

6. The hydraulic system of a water supply and drainage apparatus of claim 2, wherein: the first control valve is a three-position four-way electromagnetic reversing valve, and the second control valve is a three-position four-way electromagnetic reversing valve.

7. The hydraulic system of a water supply and drainage apparatus of claim 1, wherein: the at least two first oil cylinders are connected in parallel, and the at least two first oil cylinders are respectively used for driving the arm support mechanism on the water supply and drainage equipment to stretch and slide so as to be close to the water taking point or far away from the water taking point.

8. The hydraulic system of a water supply and drainage apparatus of claim 1, wherein: the water supply and drainage equipment comprises a vehicle body and an arm support mechanism;

the arm support mechanism is arranged on the vehicle body and is hinged with the vehicle body;

the arm support mechanism comprises a turnover arm support and a first arm support;

The turnover arm support is hinged with the vehicle body, the first arm support is arranged on the turnover arm support, and the first arm support is connected with the turnover arm support in a sliding manner;

the first oil cylinder is used for driving the first arm support to stretch and slide on the overturning arm support.

9. The hydraulic system of a water supply and drainage apparatus of claim 8, wherein: the water supply and drainage equipment further comprises a first water supply and drainage mechanism;

the first water supply and drainage mechanism is arranged on the first arm support and is used for executing water drainage operation or/and water supply operation;

the first water supply and drainage mechanism is fixedly connected with the first arm support; or (b)

The first water supply and drainage mechanism is connected with the first arm support in a sliding mode.

10. The hydraulic system of a water supply and drainage apparatus of claim 9, wherein: the first water supply and drainage mechanism comprises a multi-stage first telescopic drain pipe and a drain header pipe;

the drainage main pipe is arranged on the arm support mechanism;

the first telescopic drain pipes are nested in the drain header pipe, and the head ends of the first telescopic drain pipes are connected with one end of the drain header pipe in a sliding manner;

the multi-stage first telescopic drain pipe extends upwards along the length direction of the arm support mechanism; or (b)

The multi-stage first telescopic drain pipe extends downwards along the length direction of the arm support mechanism;

the first telescopic drain pipes are mutually nested and slidingly connected, the first telescopic drain pipes are mutually communicated, and the head ends of the first telescopic drain pipes are communicated with the drain header pipe;

one end of the second oil cylinder is arranged on the first arm support, and the other end of the second oil cylinder is arranged at the tail end of the multi-stage first telescopic drain pipe;

the second oil cylinder is used for driving the multistage first telescopic drain pipe to carry out telescopic sliding.

11. The hydraulic system of a water supply and drainage apparatus of claim 10, wherein: the multi-stage first telescopic drain pipe comprises a first drain pipe and a second drain pipe;

the first drain pipe is connected to the inner arm of the drain header pipe in a nested manner, one end of the first drain pipe is connected with one end of the drain header pipe in a sliding manner, the second drain pipe is connected to the inner wall of the first drain pipe in a nested manner, and one end of the second drain pipe is connected with the other end of the first drain pipe in a sliding manner;

the other end of the second oil cylinder is arranged on the second drain pipe.

12. The hydraulic system of a water supply and drainage apparatus of claim 10, wherein: the first water supply and drainage mechanism further comprises a multi-stage second telescopic drain pipe and a pump body;

the hydraulic system of the water supply and drainage equipment further comprises a plurality of third oil cylinders;

the multi-stage second telescopic drain pipe is arranged opposite to the multi-stage first telescopic drain pipe;

the multi-stage second telescopic drain pipe is nested in the drain main pipe, the head end of the multi-stage second telescopic drain pipe is in sliding connection with the other end of the drain main pipe, the tail end of the multi-stage second telescopic drain pipe is connected with the pump body, and the multi-stage second telescopic drain pipe extends downwards along the length direction of the arm support mechanism;

the multi-stage second telescopic drain pipes are mutually nested and slidingly connected, the multi-stage second telescopic drain pipes are mutually communicated, and the head end of the multi-stage second telescopic drain pipe is communicated with the drain header pipe;

the plurality of third oil cylinders are respectively arranged on the multi-stage second telescopic drain pipes and are respectively used for driving the multi-stage second telescopic drain pipes to perform telescopic sliding along the length direction of the arm support mechanism.

13. The hydraulic system of a water supply and drainage apparatus of claim 12, wherein: the multi-stage second telescopic drain pipe comprises a third drain pipe and a fourth drain pipe;

The third drain pipe is connected to the inner arm of the drain header pipe in a nested mode, one end of the third drain pipe is connected with the other end of the drain header pipe in a sliding mode, the fourth drain pipe is connected to the inner wall of the third drain pipe in a nested mode, and one end of the fourth drain pipe is connected with the other end of the third drain pipe in a sliding mode.

14. A water supply and drainage apparatus comprising a hydraulic system of the water supply and drainage apparatus as claimed in any one of claims 1 to 13.