CN216430091U - Broken hydraulic control system and engineering machine tool - Google Patents
Broken hydraulic control system and engineering machine tool Download PDFInfo
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- CN216430091U CN216430091U CN202123057029.8U CN202123057029U CN216430091U CN 216430091 U CN216430091 U CN 216430091U CN 202123057029 U CN202123057029 U CN 202123057029U CN 216430091 U CN216430091 U CN 216430091U
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Abstract
The utility model discloses a hydraulic crushing control system and engineering machinery, which comprises a main control valve, a floating control valve, a working device floating valve, a movable arm pilot valve, a foot relay, a crushing pilot control valve, a movable arm oil cylinder and a crushing hammer; an oil outlet of the movable arm pilot valve is connected with the floating control valve; the oil outlet of the floating control valve is connected with the control port of the floating valve of the working device; three oil ports of the floating valve of the working device are respectively connected with a large cavity, a small cavity and an oil return port of the movable arm oil cylinder; the pedal relay is connected with the crushing pilot control valve; the crushing pilot control valve is connected with a crushing pilot oil port of the main control valve; and a main oil port of the main control valve is respectively connected with a main oil port of the movable arm oil cylinder and a main oil port of the breaking hammer. Through the technical scheme of the utility model, the driver does not need to step on the crushing pilot valve all the time, thereby avoiding the fatigue of the driver; the working device can automatically float downwards along with the crushing operation to compress the drill rod, so that the phenomenon of hollowing of the drill rod of the crushing hammer is prevented.
Description
Technical Field
The utility model relates to an engineering machine tool field specifically says so a broken hydraulic control system technique of hydraulic pressure auxiliary device who has used engineering machine tool.
Background
The hydraulic breaking hammer is used as an important operation tool of a hydraulic excavator and is widely applied to working occasions such as mines, railways, roads, municipal works and the like. As is known, the hydraulic breaking hammer gnaws hard bones in daily work, the working environment is severe, and faults are easily caused by long-term use and improper operation. The hydraulic breaking hammer is one of the spare parts of the hydraulic excavator, plays an important role in a project, and can influence the progress of the project if the breaking hammer of the excavator is weak in working. Once the stone is broken, hammering should be stopped immediately, if the continuous idle striking, the bolt of quartering hammer can become flexible or fracture, even the excavator also can receive adverse effect, the hydraulic quartering hammer of correct use can make work efficiency improve effectively, improper operation can make the hammering power can not give full play to, still can damage the machine itself, hammering reaction force can damage structure spare such as quartering hammer cylinder body and excavator swing arm if improper operation is then, when the downward pressure of quartering hammer drill rod is too high, because broken object breaks suddenly, can lead to equipment to incline forward instantaneously, thereby make quartering hammer cylinder body or fuselage violently strike ground, cause the damage, when the downward pressure of quartering hammer drill rod is too little, the phenomenon of empting can appear in the drill rod of quartering hammer.
At present, when the breaking hammer of the mining excavator works, a breaking pilot valve always needs the foot of a driver to be stepped on, the fatigue of the driver is easily caused, when the breaking hammer works, a working device cannot automatically float downwards along with the breaking work to compress a drill rod, the phenomenon of emptying the drill rod of the breaking hammer is easily caused, and therefore the cylinder body of the breaking hammer and the structural member of the excavator body are damaged.
SUMMERY OF THE UTILITY MODEL
The utility model provides a broken hydraulic control system for the problem of solution is that the in-process of quartering hammer work needs the drill rod that operation equipment compressed tightly the quartering hammer, and this operation relies on driver's experience, and the operation is complicated to be difficult to the judgement, if judge that the error arouses the operation of empting of quartering hammer easily, empties and produces cylinder body and the excavator body that strikes damage the quartering hammer.
The utility model discloses realize according to following technical scheme:
the utility model discloses a hydraulic crushing control system, which comprises a main control valve, a floating control valve, a working device floating valve, a movable arm pilot valve, a foot relay, a crushing pilot control valve, a movable arm oil cylinder and a crushing hammer; an oil outlet of the movable arm pilot valve is connected with the floating control valve; the oil outlet of the floating control valve is connected with the control port of the floating valve of the working device; three oil ports of the floating valve of the working device are respectively connected with a large cavity, a small cavity and an oil return port of the movable arm oil cylinder; the pedal relay is connected with the crushing pilot control valve; the crushing pilot control valve is connected with a crushing pilot oil port of the main control valve; and a main oil port of the main control valve is respectively connected with a main oil port of the movable arm oil cylinder and a main oil port of the breaking hammer.
Further scheme: the floating control valve is a two-position four-way electromagnetic reversing valve; when the breaking hammer does not work, the floating control valve is in a left position, the electromagnetic valve is not powered, and hydraulic oil from the movable arm pilot valve is directly connected to the main control valve through the floating control valve.
Further scheme: the floating valve of the working device is a two-position three-way hydraulic reversing valve; when the floating control valve is not powered, the floating valve of the working device is positioned at the right position, and the large cavity, the small cavity and the oil tank of the movable arm oil cylinder are not communicated with each other; after the floating control valve is electrified, the floating valve of the working device is in a left position, and the large cavity, the small cavity and the oil tank of the movable arm oil cylinder are communicated with each other.
Further scheme: the pedal relay is closed, the crushing pilot control valve is in a left position, pilot hydraulic oil drives a crushing valve core of the main control valve to change direction, and the crushing hammer starts to work; the foot relay is disconnected, the crushing pilot control valve is in the right position, and the crushing hammer stops working.
Further scheme: the main control valve mainly comprises a crushing valve core and a movable arm valve core.
Further scheme: the movable arm valve core comprises a movable arm valve core I and a movable arm valve core II.
The utility model also discloses an engineering machine tool installs foretell broken hydraulic control system.
The preferable scheme is as follows: the work machine includes an excavator.
The utility model discloses beneficial effect:
through the technical scheme of the utility model, when the breaking hammer works, a driver does not need to step on the breaking pilot valve all the time, thereby avoiding the fatigue of the driver; when the breaking hammer is in breaking operation, the working device can automatically float downwards along with the breaking operation to compress the drill rod, so that the phenomenon of emptying the drill rod of the breaking hammer is prevented, and the damage to a cylinder body of the breaking hammer and a structural member of an excavator body is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
fig. 1 is a schematic diagram of the crushing hydraulic control system of the present invention.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, a crushing hydraulic control system includes a main control valve 1, a float control valve 2, a work device float valve 3, a boom pilot valve 4, a foot relay 5, a crushing pilot control valve 6, a boom cylinder 7, and a crushing hammer 8. The oil outlet of the movable arm pilot valve 4 is connected with the floating control valve 2, the oil outlet of the floating control valve 2 is connected with the control port of the working device floating valve 3, three oil ports of the working device floating valve 3 are respectively connected with a large cavity, a small cavity and an oil return port of the movable arm oil cylinder 7, the pedal relay 5 is connected with the crushing pilot control valve 6, the crushing pilot control valve 6 is connected with the crushing pilot oil port of the main control valve 1, and the main oil port of the main control valve 1 is respectively connected with the main oil ports of the movable arm oil cylinder 7 and the crushing hammer 8.
Further scheme: the floating control valve 2 is a two-position four-way electromagnetic directional valve and is characterized in that: when the breaking hammer does not work, the floating control valve 2 is in a left position, the electromagnetic valve is not powered, and hydraulic oil from the movable arm pilot valve 4 directly reaches the main control valve 1 through the floating control valve 2.
Further scheme: the floating valve 3 of the working device is a two-position three-way hydraulic reversing valve, the floating valve 3 of the working device is positioned at the right position when the floating control valve 2 is not electrified, the large cavity, the small cavity and the oil tank of the movable arm oil cylinder 7 are not communicated with each other, after the floating control valve 2 is electrified, the floating valve 3 of the working device is positioned at the left position, and the large cavity, the small cavity and the oil tank of the movable arm oil cylinder 7 are communicated with each other.
Further scheme: the relay 3 is closed, the pilot hydraulic oil passes through the left position of the crushing pilot control valve 6, the pilot hydraulic oil drives the crushing valve core of the main control valve 1 to change the direction, and the crushing hammer starts to work. The relay 3 is disconnected, the crushing pilot control valve 6 is at the right position, and the operation of the crushing hammer is stopped.
Further scheme: the main control valve mainly comprises a crushing valve core, a movable arm valve core I and a movable arm valve core II.
The working process of the crushing hydraulic control system is as follows:
when the breaking hammer is not used, hydraulic oil of the movable arm pilot valve 4 reaches the main control valve 1 through the floating control valve 2, the floating valve 3 of the working device is located at the right position, and hydraulic oil of a large cavity and a small cavity of the movable arm oil cylinder 7 controls the lifting of the movable arm through the main control valve 1, so that normal excavation operation is completed.
When the breaking hammer is used, in the breaking work, the floating control valve 2 is electrified at the right position, control oil from the pilot valve 4 of the slave arm reaches the floating valve 3 of the working device through the floating control valve 2 to push the valve core of the floating valve 3 of the working device, the floating valve 3 of the working device works at the left position, at the moment, a large cavity and a small cavity of the movable arm oil cylinder 7 are communicated with the hydraulic oil tank, the working device is in a floating state, a drill rod of the breaking hammer is pressed by the dead weight of the working device, then the pedal relay 5 is switched on, the pedal relay 5 controls the breaking pilot control valve 6 to change directions, the breaking pilot control valve 6 controls the breaking valve core of the master control valve 1 to change directions, and hydraulic oil of the master control valve 1 enters the breaking hammer 8 to drive the breaking hammer to break and strike to work.
The utility model also discloses an engineering machine tool installs foretell broken hydraulic control system.
The preferable scheme is as follows: the work machine includes an excavator.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments by utilizing the above technical contents without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical matters of the present invention are within the scope of the present invention.
Claims (8)
1. A crushing hydraulic control system is characterized in that:
the hydraulic crushing device comprises a main control valve, a floating control valve, a working device floating valve, a movable arm pilot valve, a pedal relay, a crushing pilot control valve, a movable arm oil cylinder and a crushing hammer;
an oil outlet of the movable arm pilot valve is connected with the floating control valve;
the oil outlet of the floating control valve is connected with the control port of the floating valve of the working device;
three oil ports of the floating valve of the working device are respectively connected with a large cavity, a small cavity and an oil return port of the movable arm oil cylinder;
the pedal relay is connected with the crushing pilot control valve;
the crushing pilot control valve is connected with a crushing pilot oil port of the main control valve;
and a main oil port of the main control valve is respectively connected with a main oil port of the movable arm oil cylinder and a main oil port of the breaking hammer.
2. A crushing hydraulic control system according to claim 1, characterized in that:
the floating control valve is a two-position four-way electromagnetic reversing valve;
when the breaking hammer does not work, the floating control valve is in a left position, the electromagnetic valve is not powered, and hydraulic oil from the movable arm pilot valve is directly connected to the main control valve through the floating control valve.
3. A crushing hydraulic control system according to claim 1, characterized in that:
the floating valve of the working device is a two-position three-way hydraulic reversing valve;
when the floating control valve is not powered on, the floating valve of the working device is positioned at the right position, and the large cavity, the small cavity and the oil tank of the movable arm oil cylinder are not communicated with each other;
after the floating control valve is electrified, the floating valve of the working device is in a left position, and the large cavity, the small cavity and the oil tank of the movable arm oil cylinder are communicated with each other.
4. A crushing hydraulic control system according to claim 1, characterized in that:
the pedal relay is closed, the crushing pilot control valve is in a left position, pilot hydraulic oil drives a crushing valve core of the main control valve to change direction, and the crushing hammer starts to work;
the foot relay is disconnected, the crushing pilot control valve is in the right position, and the crushing hammer stops working.
5. A crushing hydraulic control system according to claim 1, characterized in that:
the main control valve mainly comprises a crushing valve core and a movable arm valve core.
6. A crushing hydraulic control system according to claim 5, characterized in that:
the movable arm valve core comprises a movable arm valve core I and a movable arm valve core II.
7. A construction machine characterized in that:
a crushing hydraulic control system according to any one of claims 1 to 6 is installed.
8. A working machine according to claim 7, characterized in that:
the work machine includes an excavator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123057029.8U CN216430091U (en) | 2021-12-08 | 2021-12-08 | Broken hydraulic control system and engineering machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123057029.8U CN216430091U (en) | 2021-12-08 | 2021-12-08 | Broken hydraulic control system and engineering machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216430091U true CN216430091U (en) | 2022-05-03 |
Family
ID=81343035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123057029.8U Active CN216430091U (en) | 2021-12-08 | 2021-12-08 | Broken hydraulic control system and engineering machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216430091U (en) |
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2021
- 2021-12-08 CN CN202123057029.8U patent/CN216430091U/en active Active
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