阅读说明：本技术 一种解决卡刀故障的控制系统 (Control system for solving cutter clamping fault ) 是由 王振华 杨存强 李强 王景海 于 2021-10-13 设计创作，主要内容包括：本发明公开了一种解决卡刀故障的控制系统,涉及再生资源设备技术领域,包括防卡刀阀组,所述防卡刀阀组包括：动态阀,所述动态阀能够与剪切设备的剪切缸下腔连接,所述动态阀还连接有第二控制阀,所述第二控制阀能够控制所述动态阀的开合；在所述剪切设备正常工作时,所述动态阀能够打开,实现所述剪切缸下腔的吸气排气；二通插装阀,所述二通插装阀能够与所述剪切缸下腔连接,所述二通插装阀还连接有第一控制阀,所述第一控制阀能够控制所述二通插装阀的开合,所述二通插装阀连接有高压油口；当所述剪切设备卡刀时,所述二通插装阀能够打开,系统高压油通过所述二通插装阀进入所述剪切缸下腔。本发明结构简单,操作方便,解决卡刀故障效果明显。(The invention discloses a control system for solving a cutter clamping fault, which relates to the technical field of renewable resource equipment and comprises a cutter clamping prevention valve group, wherein the cutter clamping prevention valve group comprises: the dynamic valve can be connected with a lower cavity of a shearing cylinder of shearing equipment, and is also connected with a second control valve which can control the opening and closing of the dynamic valve; when the shearing equipment works normally, the dynamic valve can be opened to realize air suction and exhaust of the lower cavity of the shearing cylinder; the two-way cartridge valve can be connected with the lower cavity of the shearing cylinder, the two-way cartridge valve is further connected with a first control valve, the first control valve can control the opening and closing of the two-way cartridge valve, and the two-way cartridge valve is connected with a high-pressure oil port; when the shearing equipment is clamped, the two-way cartridge valve can be opened, and high-pressure oil of the system enters the lower cavity of the shearing cylinder through the two-way cartridge valve. The invention has simple structure and convenient operation, and has obvious effect of solving the problem of cutter clamping failure.)

1. The utility model provides a solve control system of card sword trouble, includes anti-sticking knife valves, its characterized in that, anti-sticking knife valves includes:

the dynamic valve can be connected with a lower cavity of a shearing cylinder of shearing equipment, and is also connected with a second control valve which can control the opening and closing of the dynamic valve; when the shearing equipment works normally, the dynamic valve can be opened to realize air suction and exhaust of the lower cavity of the shearing cylinder;

the two-way cartridge valve can be connected with the lower cavity of the shearing cylinder, the two-way cartridge valve is further connected with a first control valve, the first control valve can control the opening and closing of the two-way cartridge valve, and the two-way cartridge valve is connected with a system high-pressure oil port; when the shearing equipment is clamped, the two-way cartridge valve can be opened, and high-pressure oil of the system enters the lower cavity of the shearing cylinder through the two-way cartridge valve.

2. The control system for resolving a jam fault of claim 1 wherein: and the second control valve adopts a second two-position four-way electromagnetic directional valve.

3. The control system for resolving a jam fault of claim 2 wherein: the P port of the second two-position four-way electromagnetic directional valve can be connected to a system high-pressure oil port, the A port of the second two-position four-way electromagnetic directional valve is connected to the AP port of the dynamic valve, the B port of the second two-position four-way electromagnetic directional valve is connected to the BP port of the dynamic valve, the T port of the second two-position four-way electromagnetic directional valve is connected to an oil return port, the A port of the dynamic valve is connected with the two-way cartridge valve, and the B port of the dynamic valve is connected to the oil return port.

4. The control system for resolving a chucking failure as set forth in claim 3, wherein: the first control valve adopts a first two-position four-way electromagnetic directional valve.

5. The control system for resolving a jam fault of claim 4 wherein: and a shuttle valve is also arranged between the first two-position four-way electromagnetic directional valve and the two-way cartridge valve.

6. The control system for resolving a chucking failure as set forth in claim 5, wherein: the port A of the two-way cartridge valve can be connected with the high-pressure oil port of the system, and the port B of the two-way cartridge valve is connected with the lower cavity of the shearing cylinder; the port P of the first two-position four-way electromagnetic directional valve is connected to the high-pressure oil port of the system, the port A of the first two-position four-way electromagnetic directional valve is connected to the right control port of the shuttle valve, the left control port of the shuttle valve is connected to the port B of the two-way cartridge valve, the working port of the shuttle valve is connected to the cavity C of the two-way cartridge valve, and the port T of the first two-position four-way electromagnetic directional valve is connected to the oil return port.

7. The control system for resolving a jam fault of claim 6 wherein: and the port B of the two-way cartridge valve is connected with the lower cavity of the shearing cylinder through a return cavity port of the shearing cylinder.

8. The control system for resolving a jam fault of claim 1 wherein: and the high-pressure oil port of the system is connected with an oil supply pump.

Technical Field

The invention relates to the technical field of renewable resource equipment, in particular to a control system for solving a cutter clamping fault.

Background

With the rapid development of the social production level, the rapid implementation of social infrastructure, the rapid development of industries such as automobile construction and the like, the demand of steel and various metal resources is rapidly increased. However, the exploitation of metal resources is not inexhaustible, which makes the recycling of waste metals become a key point in development, and equipment such as scrap steel shearing machines, scrap steel crushers, scrap steel packaging machines, etc. are also put into production along with research and development.

The development of scrap steel shearing equipment is gradually mature, the production speed and the production efficiency of the scrap steel shearing equipment also become new research directions, the three-cylinder type quick gantry shear with the quick oil cylinder is gradually popularized and used, and the intermediate oil cylinder is smaller, so that the requirements of quick descending and return can be met by using less hydraulic oil and motor power, the total installed power of the equipment is greatly reduced, the power loss is reduced, and the production efficiency is improved.

However, a new problem arises, because the cylinder diameter of the middle quick cylinder is smaller, and the return force tonnage is limited, when the phenomena that the scissors of the gantry shear and the lower working table are stuck by waste materials occur, the phenomenon that the return force tonnage cannot return due to the insufficient return force tonnage can occur. And then the hydraulic control principle for controlling the return stroke of the clamping knife of the gantry shears is also developed and used.

The traditional hydraulic system is shown in figure 1 and consists of 1 three-position four-way electro-hydraulic reversing valve; a high-pressure oil port of the system is connected with a port P of a three-position four-way electro-hydraulic reversing valve, a port B of the electro-hydraulic reversing valve is connected with a return cavity of a shearing oil cylinder and is connected to a lower cavity of the shearing cylinder through an oil pipe; and a T port of the electro-hydraulic reversing valve is connected with an oil return port and is connected to an oil tank through an oil pipe.

The hydraulic control principle of the traditional hydraulic system is as follows:

when the equipment normally operates, the quick cylinder is responsible for quick descending and return stroke of scissors, and the two shearing cylinders follow and do the up-and-down motion passively, in order to prevent the vacuum from appearing, two shearing cylinder cavity of resorption are connected to the B mouth of anti-sticking knife valves, and through the T mouth oil return tank of electric-hydraulic reversing valve, the oil return pipe exposes above the hydraulic oil level, breathes in the exhaust. When the main scissors and the lower platform are stuck due to waste materials, the cross end of the electro-hydraulic valve is electrified, and the port P of the electro-hydraulic valve is communicated with the port B. High-pressure oil of the system flows to the port B through the port P of the electro-hydraulic valve and then enters the lower cavity of the shearing cylinder, so that the shearing cylinder and the quick cylinder simultaneously act in a return stroke, the rod cavity area of the shearing cylinder is large, the return force tonnage is greatly improved, and the shear lifting function of the gantry shears is realized.

With the further development of equipment, the speed and the tonnage of the rapid gantry shears are gradually increased, and the original control mode for controlling the return stroke of the clamping knife cannot meet the use requirement due to the limitation of the size of the drift diameter of an element. The development of the large-drift-diameter electro-hydraulic valve is not a good research and development direction because the valve usage amount in other industries is small, and the research and development cost cannot be shared.

Therefore, it is desirable to provide a new control system for solving the problem of the jamming failure, so as to solve the above-mentioned drawbacks in the prior art.

Disclosure of Invention

The invention aims to provide a control system for solving the problem of the clamping knife fault, which is used for solving the problems in the prior art, and has the advantages of simple structure, convenience in operation and obvious effect of solving the clamping knife fault.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a control system for solving the problem of cutter clamping faults, which comprises a cutter clamping prevention valve group, wherein the cutter clamping prevention valve group comprises:

the dynamic valve can be connected with a lower cavity of a shearing cylinder of shearing equipment, and is also connected with a second control valve which can control the opening and closing of the dynamic valve; when the shearing equipment works normally, the dynamic valve can be opened to realize air suction and exhaust of the lower cavity of the shearing cylinder;

the two-way cartridge valve can be connected with the lower cavity of the shearing cylinder, the two-way cartridge valve is further connected with a first control valve, the first control valve can control the opening and closing of the two-way cartridge valve, and the two-way cartridge valve is connected with a system high-pressure oil port; when the shearing equipment is clamped, the two-way cartridge valve can be opened, and high-pressure oil of the system enters the lower cavity of the shearing cylinder through the two-way cartridge valve.

Preferably, the second control valve is a second two-position four-way electromagnetic directional valve.

Preferably, a port P of the second two-position four-way electromagnetic directional valve can be connected to a system high-pressure oil port, a port a of the second two-position four-way electromagnetic directional valve is connected to an port AP of the dynamic valve, a port B of the second two-position four-way electromagnetic directional valve is connected to a port BP of the dynamic valve, a port T of the second two-position four-way electromagnetic directional valve is connected to an oil return port, the port a of the dynamic valve is connected to the two-way cartridge valve, and the port B of the dynamic valve is connected to an oil return port.

Preferably, the first control valve is a first two-position four-way electromagnetic directional valve.

Preferably, a shuttle valve is further arranged between the first two-position four-way electromagnetic directional valve and the two-way cartridge valve.

Preferably, the port A of the two-way cartridge valve can be connected with the high-pressure oil port of the system, and the port B of the two-way cartridge valve is connected with the lower cavity of the shearing cylinder; the port P of the first two-position four-way electromagnetic directional valve is connected to the high-pressure oil port of the system, the port A of the first two-position four-way electromagnetic directional valve is connected to the right control port of the shuttle valve, the left control port of the shuttle valve is connected to the port B of the two-way cartridge valve, the working port of the shuttle valve is connected to the cavity C of the two-way cartridge valve, and the port T of the first two-position four-way electromagnetic directional valve is connected to the oil return port.

Preferably, the port B of the two-way cartridge valve is connected with the lower cavity of the shearing cylinder through a return cavity port of the shearing cylinder.

Preferably, the system high-pressure oil port is connected with an oil supply pump.

Compared with the prior art, the invention has the following beneficial technical effects:

the characteristic that the dynamic valve plug-in can be actively opened by controlling oil is utilized, so that the lower cavity of the shearing cylinder forms a passage to an oil tank through the opened dynamic valve plug-in, and the functions of air suction and exhaust of the lower cavity of the shearing cylinder are realized; when the equipment normally operates, the quick cylinder is responsible for quick descending and return stroke of the scissors, the two shearing cylinders act along with the driven action, the lower cavity of each shearing cylinder opens a formed passage through the dynamic valve plug-in of the anti-blocking knife valve group to perform air suction and exhaust actions, and the vacuum phenomenon is prevented.

When the phenomenon that the main scissors and the lower platform are clamped due to waste materials occurs, the quick cylinder cannot lift the scissors due to small tonnage, the equipment cannot normally operate, at the moment, the dynamic valve plug-in unit for air suction and exhaust of the anti-clamping valve group is closed, the oil inlet switch valve is opened, high-pressure oil of the system enters the lower cavity of the shearing cylinder through the anti-clamping valve group, and the return force tonnage is greatly improved due to the large area of the rod cavity of the shearing cylinder, so that the scissors lifting function of the gantry scissors is realized.

The invention has simple structure and convenient operation, and has obvious effect of solving the problem of cutter clamping failure; the dynamic valve plug-in is complete in series, wide in application range and not limited by element drift diameter, and the problem of cutter clamping shutdown of rapid large-tonnage equipment can be better solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a hydraulic control diagram of a conventional prior art hydraulic system;

FIG. 2 is a hydraulic control diagram of a control system for resolving a stuck knife fault in the present invention;

in the figure: 1-an oil tank, 2-a first liquid charging valve, 3-a second liquid charging valve, 4-a shearing cylinder, 5-a quick cylinder, 6-scissors, 7-an anti-blocking knife valve group, 8-an electro-hydraulic reversing valve, 9-a two-way cartridge valve, 10-a first two-position four-way electromagnetic reversing valve, 11-a second two-position four-way electromagnetic reversing valve, 12-a dynamic valve, 13-a shuttle valve, 14-a liquid charging valve control port, 15-main cylinder pressurization, 16-quick cylinder descending, 17-quick cylinder return, 18-a shearing cylinder return cavity, 19-return oil and 20-system high-pressure oil.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a control system for solving the problem of the clamping knife fault, which is used for solving the problems in the prior art, has a simple structure, is convenient to operate and has an obvious effect of solving the clamping knife fault.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Example one

As shown in fig. 2, the control system for solving the sticking failure mainly includes a sticking prevention valve group 7, where the sticking prevention valve group 7 mainly includes 1 two-way cartridge valve 9 controlled by a shuttle valve 13, 1 dynamic valve 12, 2 two-position four-way electromagnetic directional valves, and 1 shuttle valve 13. A high-pressure oil port of the system is communicated with an A port of the two-way cartridge valve 9, a B port of the two-way cartridge valve 9 is connected with a return cavity port of the shearing cylinder, and is connected to a lower cavity of the shearing cylinder 4 through an oil pipe. A P port of the first two-position four-way electromagnetic directional valve 10 is connected to a system high-pressure oil port, an A port of the first two-position four-way electromagnetic directional valve 10 is connected to a right control port of the shuttle valve 13, a left control port of the shuttle valve 13 is connected to a cavity B of the two-way cartridge valve 9, and a working port of the shuttle valve 13 is connected to a cavity C of the two-way cartridge valve 9. The T port of the first two-position four-way electromagnetic directional valve 10 is connected to the oil return port. The P port of the second two-position four-way electromagnetic directional valve 11 is connected to a system high-pressure oil port, the A port is connected to the AP port of the dynamic valve 12, the B port is connected to the BP port of the dynamic valve 12, and the T port is connected to an oil return port. The port A of the dynamic valve 12 is connected to the port B of the two-way cartridge valve 9 and is connected to the lower cavity of the shearing cylinder 4 through a return cavity port of the shearing cylinder, and the port B of the dynamic valve 12 is connected to an oil return port and is connected to the oil tank 1 through an oil pipe.

In the embodiment, the upper chambers of the two shearing cylinders 4 are respectively connected with a first liquid charging valve 2 and a second liquid charging valve 3, the first liquid charging valve 2 and the second liquid charging valve 3 are both connected with a liquid charging valve control port 14, and the upper chambers of the two shearing cylinders 4 can be subjected to main cylinder pressurization 15; the upper and lower chambers of the quick cylinder 5 enable quick cylinder down 16 and quick cylinder return 17 respectively.

In the embodiment, 3 main oil ports are provided, namely a system high-pressure oil port, a shear cylinder return cavity port and an oil return port; the high-pressure oil port of the system is a high-pressure pipeline led out from the outlet of the oil supply pump, the return cavity port of the shearing cylinder is a pipeline connected to the lower cavity of the shearing cylinder 4, and the oil return port is a pipeline connected to the oil tank 1.

The hydraulic oil way is a system high-pressure oil port communicated with the port A of the two-way cartridge valve 9, and the port A, B of the two-way cartridge valve 9 is opened and closed through the action of a valve core; the opening and closing of the valve core are determined by whether pressure oil exists in a control cavity C of the two-way cartridge valve 9 or not. The port B of the two-way cartridge valve 9 is connected to the lower cavity of the shearing cylinder 4 through an oil pipe. The port A of the dynamic valve 12 is connected to the port B of the two-way cartridge valve 9 and communicated with the lower cavity of the shearing cylinder 4, the opening and the closing of the dynamic valve 12 are determined by whether the ports AP and BP of the dynamic valve 12 are pressurized, and the port B of the dynamic valve 12 is connected to the oil tank 1 through a pipeline.

The working principle of the embodiment is as follows:

during normal operation of the device, the suction and the exhaust of the two shearing cylinders 4 are performed by opening the dynamic valve 12. The dynamic valve 12 operates on the principle that the dynamic valve 12 is opened when the BP port is pressurized and the dynamic valve 12 is closed when the AP port is pressurized. When the oil cylinder ascends and descends, system high-pressure oil 20 flows to the port A through the port P of the first two-position four-way electromagnetic directional valve 10 and enters the cavity C of the two-way cartridge valve 9 through the shuttle valve 13, at the moment, high pressure is established in the cavity C, the two-way cartridge valve 9 is in a closed state, the communication between the system high-pressure oil 20 and a return cavity port of the shearing cylinder is cut off, and high-pressure oil can reliably enter the quick cylinder 5. Meanwhile, the system high-pressure oil 20 flows to the port B through the port P of the second two-position four-way electromagnetic directional valve 11 and then enters the port BP of the dynamic valve 12, and the pressure is built at the port BP of the dynamic valve 12. The AP port of the dynamic valve 12 is communicated with the A port of the second two-position four-way electromagnetic directional valve 11 and then returns to the oil tank 1 through the T port of the second two-position four-way electromagnetic directional valve 11, the AP port of the dynamic valve 12 has no pressure, the dynamic valve 12 is opened to enable the return cavity port of the shearing cylinder to be communicated with the return oil 19, and the lower cavity of the shearing cylinder 4 performs air suction and exhaust actions through the opened dynamic valve 12.

When the main scissors and the lower platform are stuck due to waste materials, the return of the main scissors and the lower platform only depends on the return of the return cavity of the quick cylinder, and the phenomenon that the return cannot be performed due to the fact that the size of the oil cylinder is small and the return force is insufficient occurs. At this time, the second two-position four-way electromagnetic directional valve 11 is electrified and is switched to the parallel position, and the P, A ports and the B, T ports of the second two-position four-way electromagnetic directional valve 11 are communicated. High-pressure oil 20 of the system flows to the port A through the port P of the second two-position four-way electromagnetic directional valve 11, then enters the port AP of the dynamic valve 12, pressure is built in the port AP, the port BP of the dynamic valve 12 is communicated with the port B of the second two-position four-way electromagnetic directional valve 11, then the high-pressure oil returns to the oil tank 1 through the port T of the second two-position four-way electromagnetic directional valve 11, the port BP of the dynamic valve 12 loses pressure, the dynamic valve 12 is closed, communication between the return cavity 18 of the shearing cylinder and the return oil 19 is cut off, and the return cavity 18 of the shearing cylinder becomes a closed cavity.

Then the first two-position four-way electromagnetic directional valve 10 is electrified and is switched to a cross position, the port A of the first two-position four-way electromagnetic directional valve 10 is connected to the port T, the pressure of the cavity C of the two-way cartridge valve 9 is released through the shuttle valve 13 and the first two-position four-way electromagnetic directional valve 10, the two-way cartridge valve 9 is opened, the system high-pressure oil 20 flows to the port B through the port A of the two-way cartridge valve 9 and enters the shearing cylinder return cavity 18, and the pressure is built in the shearing cylinder return cavity 18. The shearing cylinder 4 and the quick cylinder 5 return simultaneously, and the return force tonnage is greatly improved, so that the function of lifting the scissors of the gantry scissors is realized. The whole control process is stable and reliable, the operation is simple, the limitation of the drift diameter of the component is avoided, and the application range is wider.

The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.