CN220726710U

CN220726710U - Hydraulic system of slag removing machine and slag removing machine

Info

Publication number: CN220726710U
Application number: CN202322494085.0U
Authority: CN
Inventors: 卢顺魁; 钟海胜; 陈永鑫; 刘兰波; 刘福生
Original assignee: Suzhou Langxin Intelligent Technology Co ltd
Current assignee: Suzhou Langxin Intelligent Technology Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-04-05
Anticipated expiration: 2033-09-13

Abstract

The utility model discloses a hydraulic system of a slag removing machine, which is applied to the slag removing machine and comprises an oil tank, a variable pump, a multi-way valve group and an executing component, wherein an oil suction port of the variable pump is communicated with the oil tank, an oil outlet of the variable pump is communicated with the executing component through the multi-way valve group, and the multi-way valve group is communicated with the variable pump through a load feedback oil circuit. The utility model also discloses a slag removing machine which comprises a machine body and a big arm, wherein the big arm is arranged on the machine body, the slag removing machine further comprises the hydraulic system of the slag removing machine, and the big arm of the slag removing machine acts under the driving of the hydraulic system of the slag removing machine. The utility model can realize automatic treatment of the ore-smelting furnace burden surface under the condition of remote monitoring, thereby improving the working environment and the working efficiency. The utility model improves the working efficiency of the equipment and reduces the energy consumption during the operation of the equipment.

Description

Hydraulic system of slag removing machine and slag removing machine

Technical Field

The utility model belongs to the field of submerged arc furnace equipment, and particularly relates to equipment capable of automatically carrying out slag skimming operation after discharging of a submerged arc furnace and a hydraulic system of the equipment.

Background

At present, the blast furnace has high risk, poor working environment and high labor intensity in front of the furnace, and is generally considered as one of the most laborious and worst working environment in the steel industry. Meanwhile, because of complex process and working procedures, the requirements on the post skills of operators are extremely high, the level of the post skills of operators, the operation consciousness level and the like have great influence on the stability of the running furnace condition of the blast furnace, the molten iron yield, the quality and the like. The automatic intelligent transformation of the stokehole operation equipment is implemented, and the automatic intelligent transformation has important significance for improving stokehole operation efficiency and precision, reducing operation risks, protecting physical and mental health of staff and the like.

Whereas the automation device is driven independently of the mechanical-hydraulic interaction, the actuators connected to the mechanical device are usually driven by control elements in the hydraulic system to perform the required work. In the process of executing corresponding movement by the hydraulic driving mechanical equipment, the hydraulic working circuit at least comprises a power element, a control element and an execution element, wherein the power element provides pressure oil for driving the mechanical equipment, and the control element is positioned between the power element and the execution element and is connected by a pipeline, a joint and the like. The control element controls the movement speed and direction of the actuating element by controlling the flow of hydraulic oil and the flow direction. According to whether the power element adopted in the hydraulic system, namely the displacement of the hydraulic pump is changed, the hydraulic system is divided into a quantitative pump system and a variable pump system, and the variable pump system can better adapt to the load change requirement, so that the energy-saving effect is better and the variable pump system is widely used.

According to the different control modes of the variable pump, the variable pump system has a constant pressure control mode and a load sensitive control mode: for the constant pressure control mode, the system has the advantages of high response speed and high stability, but when the control mode is used for system selection, the power of the prime motor can be selected only according to the maximum output flow and the pressure of the variable pump, so that the power waste is caused; for the load sensitive control mode, the control method has the advantages of high efficiency, small power loss and low energy consumption, but when the distance between the actuating mechanism and the control valve is far, the response speed of the system is greatly reduced.

Therefore, how to solve the above problems to improve the working efficiency of the device and reduce the energy consumption of the device during working is an urgent problem in the industry.

Disclosure of Invention

The utility model mainly aims to provide a hydraulic system of a slag removing machine and the slag removing machine, which can improve the working efficiency of equipment and reduce the energy consumption of the equipment during working.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:

in one aspect of the present utility model, a hydraulic system for a slag-off machine is provided, for use in a slag-off machine,

the variable pump comprises an oil tank, a variable pump, a multi-way valve group, a pipeline pipe fitting and an executing component, wherein an oil suction port of the variable pump is communicated with the oil tank, an oil outlet of the variable pump is communicated with the executing component through the multi-way valve group, and the multi-way valve group is communicated with the variable pump through a load feedback oil circuit.

According to one embodiment of the utility model, any working unit in the multi-way valve group comprises a shuttle valve, a pressure compensator and a reversing valve, and the variable pump is sequentially communicated with the shuttle valve, the pressure compensator and the reversing valve through the load feedback oil circuit.

According to one embodiment of the utility model, the multi-way valve group further comprises a main overflow valve and a secondary overflow valve, high-pressure oil enters the multi-way valve, the highest system pressure is limited through the main overflow valve, and the highest pressure of the working oil way is limited through the secondary overflow valve.

According to one embodiment of the utility model, the pressure oil at the high-pressure oil port of the variable pump is connected with the pipeline high-pressure filter and is connected with the high-pressure oil port of the head in the multi-way valve group in series through a pressure pipeline to provide power for the executing component, the LS load feedback oil port in the variable pump is connected with the LS oil port of the head in the multi-way valve group in series through an LS pipeline, the oil return port of the tail in the multi-way valve group is connected with the oil return filter in series through an oil return pipeline, and the control oil drain port and the LS drain port in any working link in the multi-way valve group are respectively returned to the oil tank through pipelines.

In one embodiment of the present utility model, the actuator includes a forward and backward motor, a swing motor, and a pitch cylinder.

According to one embodiment of the utility model, the output part of the swing motor is connected with a speed reducer, pilot oil of the multi-way valve group is communicated with a brake release oil port in the speed reducer through a reversing valve, a hydraulic pipeline of the multi-way valve group for lubrication is communicated with an oil supplementing port of the speed reducer, a working oil way of the multi-way valve is connected with a working oil port of the speed reducer, and an oil drain port of the swing motor is communicated with the oil tank.

According to one embodiment of the utility model, the pilot oil in the tail of the multi-way valve group is taken as a control oil way, and the return oil in the tail of the multi-way valve group is taken as a speed reducer lubrication oil way.

According to one embodiment of the utility model, a pilot oil passage is connected in series with a brake release oil port in the speed reducer assembly through a two-position four-way electromagnetic reversing valve, and a lubricating oil passage is communicated with an oil supplementing port of the speed reducer assembly.

According to one embodiment of the utility model, the air filter on the oil tank is communicated with the atmosphere, the oil tank is connected with the oil suction port of the variable pump through a stop valve and an oil suction pipeline, hydraulic oil in the oil tank is fed into the oil suction port of the variable pump through the atmospheric pressure, and leakage oil in the variable pump shell is connected with the oil tank in series through an oil drain pipe.

In another aspect of the present utility model, there is provided a slag removing machine comprising a machine body and a large arm, wherein the large arm is mounted on the machine body, the slag removing machine further comprises the hydraulic system of the slag removing machine as described in any one of the above, and the large arm of the slag removing machine acts under the drive of the hydraulic system of the slag removing machine.

According to the technical scheme, the hydraulic system of the slag removing machine and the slag removing machine have the advantages and positive effects that:

according to the utility model, the variable pump is matched with the multi-way valve group, and the multi-way valve group is communicated with the variable pump through the load feedback oil circuit, so that the working efficiency of the equipment is improved, and the energy consumption of the equipment in working is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained by those skilled in the art without any inventive effort.

Fig. 1 is a schematic diagram of the oil suction working principle of a variable pump in a hydraulic system of a slag-off machine.

Fig. 2 is a schematic diagram of the load-sensitive control principle of the variable pump LS in the hydraulic system of the slag-off machine according to the present utility model.

FIG. 3 is a schematic diagram of the working principle of the multi-way valve in the hydraulic system of the slag removing machine.

FIG. 4 is a schematic diagram of the working principle of a motor reducer assembly in the hydraulic system of the slag-off machine.

FIG. 5 is a schematic diagram of the working principle of a hydraulic cylinder in the hydraulic system of the slag-off machine.

FIG. 6 is a schematic diagram of the working principle of the whole hydraulic system of the slag removing machine.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

In the following description of different examples of the utility model, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration different exemplary structures, systems, and steps in which aspects of the utility model may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present utility model. Moreover, although the terms "top," "bottom," "front," "rear," "side," and the like may be used herein to describe various example features and elements of the utility model, these terms are used herein merely for convenience, e.g., as in the illustrated orientation of the examples in the figures. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure in order to fall within the scope of the utility model.

As shown in fig. 1 to 6, the hydraulic system of the slag-raking machine of the embodiment is applied to the slag-raking machine and comprises an oil tank 1, a variable pump 5, a multi-way valve group 9 and an executing component, wherein an oil suction port of the variable pump 5 is communicated with the oil tank 1 through a hydraulic pipeline, an oil outlet of the variable pump 5 is communicated with the executing component through the hydraulic pipeline and the multi-way valve group 9, and the multi-way valve group 9 is communicated with the variable pump 5 through a load feedback oil circuit.

In this embodiment, any working unit 44 of the multiple-way valve group 9 includes a shuttle valve 16, a pressure compensator 17 and a reversing valve, and the variable pump 5 is sequentially connected to the shuttle valve 16, the pressure compensator 17 and the reversing valve through a load feedback oil path.

In this embodiment, the multi-way valve group 9 further includes a main relief valve 15 and a secondary relief valve 19, high-pressure oil enters the multi-way valve, the highest system pressure is limited through the main relief valve 15, and the highest pressure of the working oil path is limited by the secondary relief valve 19.

In this embodiment, the pressure oil at the high pressure oil port of the variable pump 5 is connected with the pipeline high pressure filter 7, and is connected in series with the high pressure oil port of the head in the multi-way valve group 9 through the pressure pipeline 8 to provide power for the executing component, the LS load feedback oil port in the variable pump 5 is connected in series with the LS oil port of the head in the multi-way valve group 34 through the LS pipeline 10, the oil return port of the tail in the multi-way valve group 9 is connected in series with the oil return filter 12 through the oil return pipeline 11, and the control oil drain port and the LS oil drain port inside any working link 44 in the multi-way valve group 9 return to the oil tank 1 through pipelines respectively.

In this embodiment, the executing components include the advance and retreat motor 41, the swing motor 42, and the pitch cylinder 28.

In this embodiment, the output part of the swing motor 42 is connected to a speed reducer, the pilot oil of the multiple-way valve group 9 is communicated with a brake oil opening in the speed reducer through a reversing valve, a hydraulic pipeline of the multiple-way valve group 9 for lubrication is communicated with an oil supplementing opening of the speed reducer, the working oil way 27 of the multiple-way valve group 9 is a working link 44 in the multiple-way valve group 9 and is connected with the working oil opening of the speed reducer, and the oil drain opening of the swing motor 42 is communicated with the oil tank 1.

In this embodiment, the pilot oil in the multi-way valve tail 24 is taken as a control oil way, and the return oil in the multi-way valve tail 24 is taken as a speed reducer lubrication oil way.

In this embodiment, the pilot oil path is connected in series with the brake release oil port in the speed reducer assembly 26 through the two-position four-way electromagnetic directional valve, and the lubrication oil path is connected with the oil supplementing port of the speed reducer assembly.

In this embodiment, the air filter 2 on the oil tank 1 is communicated with the atmosphere, the oil tank is connected with the oil suction port of the variable pump 5 through the stop valve 3 and the oil suction pipeline 4, hydraulic oil in the oil tank 1 is fed into the oil suction port of the variable pump 5 through the atmospheric pressure, and leaked oil in the shell of the variable pump 5 is connected with the oil tank 1 in series through the oil drain pipeline 6.

In another aspect of the present utility model, there is provided a slag-removing machine comprising a machine body and a large arm mounted on the machine body, the slag-removing machine further comprising a hydraulic system of the slag-removing machine as described above, the large arm of the slag-removing machine being driven by the hydraulic system of the slag-removing machine.

in the utility model, the variable pump 5 is matched with the multi-way valve group 9, and the multi-way valve group is communicated with the variable pump 5 through the load feedback oil way, so that the working efficiency of the equipment is improved, and the energy consumption of the equipment in working is reduced.

Each figure is described separately below:

in fig. 1, a hydraulic oil tank is used for providing an oil source for a variable pump, electric energy is converted into pressure energy through the variable pump, an air filter 2 on the oil tank 1 is communicated with the atmosphere, and then is connected with an oil suction port of the variable pump 5 through a stop valve 3 and an oil suction pipeline 4, hydraulic oil in the oil tank 1 is fed into the oil suction port of the variable pump 5 through the atmospheric pressure, and leaked oil in a shell of the variable pump 5 is connected with the oil tank 1 in series through an oil drain pipeline 6.

In fig. 2, high-pressure oil and LS control oil are connected into a multi-way valve group 9 with load feedback by adopting LS load sensitive control in a variable pump control strategy, the pressure oil at a high-pressure oil port of a variable pump 5 is connected with a pipeline high-pressure filter 7 to realize a pressure oil filtering function, and then is connected with the multi-way valve group 9 in series through a pressure pipeline 8 to provide a power source for an actuating mechanism in the system, an LS load feedback oil port in the variable pump 5 is connected with an LS oil port in the multi-way valve group 9 in series through an LS pipeline 10, an oil return port in the multi-way valve group 9 is connected with an oil return filter 12 in series through an oil return pipeline 11 to realize an oil return filtering function, and meanwhile, a control oil drain port and an LS drain port in the multi-way valve group 9 are respectively returned to the oil tank 1 through a pipeline 13 and a pipeline 14.

In fig. 3, high-pressure oil enters the multi-way valve group 9, the highest system pressure is limited through the main overflow valve 15, meanwhile, an LS oil way reaches the pressure compensator 17 through the shuttle valve 16 and enters the main valve core 18, and the inside of the main valve core 18 is communicated with the working oil port, so that the load maintaining and feedback functions are realized. According to the load change condition, a secondary overflow valve 19 is selectively added to the working oil path, so as to limit the highest pressure of the working oil path, protect an actuating mechanism and prolong the working life of the actuating mechanism. The high-pressure oil of the system branches to the working cavity for driving the main valve core 18 to change direction through the pilot oil filter 20 and the pilot oil pressure reducing valve 21, and then the main valve core 18 is controlled to change direction through the pilot control valves a22 and b23, so that the functions of advancing or retreating of an executing mechanism and the like are realized.

In fig. 4, the pilot oil in the tail connection 24 of the multi-way valve group is taken as a control oil way, the return oil in the tail connection 24 of the multi-way valve group is taken as a lubrication oil way of the speed reducer, the pilot oil way is connected in series with a brake release oil port in the motor speed reducer assembly 26 through a two-position four-way electromagnetic reversing valve 25, and the lubrication oil way is communicated with an oil supplementing port of the motor speed reducer assembly 26. Meanwhile, a working oil way 27 in the multi-way valve bank working link 44 is connected with a working oil port of the motor speed reducer assembly 26, and finally, an oil drain port of the motor speed reducer assembly 26 is communicated with the oil tank 1, so that a rotation function is realized after braking is released, and meanwhile, the speed reducer is lubricated.

In fig. 5, a working oil path 27 in a working unit 44 of the multi-way valve group is communicated with a working oil port of a pitching hydraulic cylinder 28, and the working oil path enters an oil cylinder working cavity through a balance valve 29 on the pitching hydraulic cylinder 28 to complete pitching action of the whole unit.

In the figure, the working hydraulic principle diagram of the whole machine is shown, so that the pressure loss in the operation process of the hydraulic system is reduced, the load balance is maintained, and the service life of elements is prolonged. And the LS load sensitive hydraulic system is adopted for control, and the pressure and the flow required by the executive component are supplied as required. The working efficiency of the equipment is improved, the energy consumption of the equipment in working is reduced, and the noise generated by the equipment in standby is reduced.

It will be appreciated by persons skilled in the art that the particular structures and processes shown in the above detailed description are illustrative only and not limiting. Moreover, those skilled in the art to which the utility model pertains will appreciate that various features described above may be combined in any number of possible ways to form new embodiments, or that other modifications are within the scope of the utility model.

Claims

1. The hydraulic system of the slag removing machine is applied to the slag removing machine and is characterized by comprising an oil tank, a variable pump, a multi-way valve group, a pipeline pipe fitting and an executing component, wherein an oil suction port of the variable pump is communicated with the oil tank, an oil outlet of the variable pump is communicated with the executing component through the multi-way valve group, and the multi-way valve group is communicated with the variable pump through a load feedback oil circuit.

2. A hydraulic system of a slag removing machine as set forth in claim 1 wherein: any working unit in the multi-way valve group comprises a shuttle valve, a pressure compensator and a reversing valve, and the variable pump is sequentially communicated with the shuttle valve, the pressure compensator and the reversing valve through the load feedback oil circuit.

3. A hydraulic system of a slag removing machine as set forth in claim 2 wherein: the multi-way valve group further comprises a main overflow valve and a secondary overflow valve, high-pressure oil enters the multi-way valve, the highest system pressure is limited through the main overflow valve, and the highest pressure of the working oil way is limited by the secondary overflow valve.

4. A hydraulic system of a slag removing machine as set forth in claim 2 wherein: the pressure oil at the high-pressure oil port of the variable pump is connected with a pipeline high-pressure filter and is connected in series with the high-pressure oil port of the head connection in the multi-way valve group through a pressure pipeline to provide power for the execution part, the LS load feedback oil port in the variable pump is connected in series with the LS oil port of the head connection in the multi-way valve group through an LS pipeline, the oil return port of tail in the multi-way valve group is connected with the oil return filter in series through an oil return pipeline, and the control oil drain port and the LS oil drain port in any working unit in the multi-way valve group return to the oil tank through pipelines respectively.

5. A hydraulic system of a slag removing machine as set forth in claim 1 wherein: the executing component comprises a driving and reversing motor, a swinging motor and a pitching oil cylinder.

6. The hydraulic system of a slag remover as set forth in claim 5, wherein: the swing motor output part is connected with a speed reducer, pilot oil of the multi-way valve group is communicated with a brake oil opening in the speed reducer through a reversing valve, a hydraulic pipeline of the multi-way valve group for lubrication is communicated with an oil supplementing opening of the speed reducer, a working oil way of the multi-way valve is connected with a working oil opening of the speed reducer, and an oil draining opening of the swing motor is communicated with an oil tank.

7. The hydraulic system of a slag remover as set forth in claim 6, wherein: and taking the pilot oil in the tail of the multi-way valve group as a control oil way and taking the return oil in the tail of the multi-way valve group as a speed reducer lubricating oil way.

8. The hydraulic system of a slag removing machine as set forth in claim 7, wherein: the pilot oil way is connected in series with a brake release oil port in the speed reducer assembly through a two-position four-way electromagnetic reversing valve, and the lubricating oil way is communicated with an oil supplementing port of the speed reducer assembly.

9. A hydraulic system of a slag removing machine as set forth in claim 1 wherein: the air filter on the oil tank is communicated with the atmosphere, the oil tank is connected with the oil suction port of the variable pump through a stop valve and an oil suction pipeline, hydraulic oil in the oil tank is fed into the oil suction port of the variable pump through the atmospheric pressure, and leakage oil in the variable pump shell is connected with the oil tank in series through an oil drain pipe.

10. A slag removing machine comprising a machine body and a large arm, wherein the large arm is mounted on the machine body, and the slag removing machine is characterized by further comprising the hydraulic system of the slag removing machine according to any one of claims 1-9, and the large arm of the slag removing machine acts under the drive of the hydraulic system of the slag removing machine.