CN102773397B - Walking closed system of forging manipulator - Google Patents
Walking closed system of forging manipulator Download PDFInfo
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- CN102773397B CN102773397B CN201210248033.9A CN201210248033A CN102773397B CN 102773397 B CN102773397 B CN 102773397B CN 201210248033 A CN201210248033 A CN 201210248033A CN 102773397 B CN102773397 B CN 102773397B
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- variable displacement
- displacement pump
- proportional variable
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Abstract
The invention relates to a hydraulic transmission control system, in particular to a walking closed system of a forging manipulator, which at least comprises a bidirectional proportional variable displacement pump, a hydraulic motor, a proportional operating handle, an electrical control system and a motor. According to the hydraulic motor, a pin wheel on a rack is driven so that the forging manipulator walks forwards and backwards and the motor drives the bidirectional proportional variable displacement pump. The hydraulic transmission control system is characterized in that an oil discharging hole of the bidirectional proportional variable displacement pump is directly serially connected with an oil feeding hole of the hydraulic motor, an oil discharging hole of the hydraulic motor is directly serially connected with an oil suction hole of the bidirectional proportional variable displacement pump through a pipeline, so that a closed loop is formed; and the proportional operating handle controls directions and flows of oil feeding and oil discharging of the bidirectional proportional variable displacement pump through the electric control system and further controls the rotation direction and the rotation speed of the hydraulic motor. According to the hydraulic transmission control system, the mode of the traditional valve control hydraulic motor is changed, the flow and the steering direction of the hydraulic motor are directly controlled, so that the walking speed and the walking direction of the forging manipulator are controlled.
Description
Technical field
The present invention relates to hydraulic transmission control system, belong to the all-hydraulic track forging manipulator walking enclosed control system that has, is a kind of manipulator for forging walking closed system.
Background technique
The front and back walking of manipulator for forging is realized at tooth bar upper driving by fluid motor-driven pin wheel, oil hydraulic motor is by its direction of selector valve control, and speed is regulated by flow system flow, because the weight of manipulator for forging own is large, movement inertia is large, impacts large while making manipulator stop commutating with front and back; Especially for large-sized forging manipulator, because the large inertia of its moving-mass is larger, when motion conversion, impact greatlyr, stopping distance is long, and control accuracy is low, has a strong impact on the manufacturing efficiency of equipment.
Summary of the invention
The object of this invention is to provide a kind of manipulator for forging walking closed system, change the mode of traditional valve control oil hydraulic motor, by controlling flow and the Output pressure direction of two-way proportional variable displacement pump, directly control the flow of oil hydraulic motor and turn to, thereby realizing the speed of travel to manipulator and the control of direction.
Technological scheme of the present invention is a kind of manipulator for forging walking closed system, which comprises at least two-way proportional variable displacement pump, oil hydraulic motor, operation sequential handle, electric control system and motor, oil hydraulic motor is by driving pin wheel on tooth bar to realize the front and back walking of manipulator for forging, motor drives two-way proportional variable displacement pump, it is characterized in that: the oil outlet of two-way proportional variable displacement pump is directly connected by pipeline with the filler opening of oil hydraulic motor, the oil outlet of oil hydraulic motor is directly connected by pipeline with the inlet port of two-way proportional variable displacement pump, forms closed circuit; Operation sequential handle into and out of oily direction and flow, and then is controlled sense of rotation and the speed of oil hydraulic motor by electric control system control two-way proportional variable displacement pump.
Described manipulator walking closed system also comprises fuel tank, the first relief valve, the second relief valve and service pump, service pump is driven and is provided outer governor pressure for two-way proportional variable displacement pump by motor, service pump is communicated with fuel tank, the first relief valve, and access in whole system loop, two the second relief valves are directly connected into system circuit.
One end of described service pump is communicated with cooler, filter and one-way valve, and the other end of service pump is communicated with fuel tank, the first relief valve and one-way valve.
Described manipulator walking closed system also comprises pilot operated directional control valve, and pilot operated directional control valve is directly connected into system circuit, and is communicated with first relief valve.
Feature of the present invention be this manipulator for forging walking closed system by controlling flow and the Output pressure direction of two-way proportional variable displacement pump, directly control the rotating speed of oil hydraulic motor and turn to, thereby realizing the speed of travel to manipulator for forging and the control of direction; Flow and direction that it goes back passing ratio operating grip control two-way proportional variable displacement pump, make oil hydraulic motor rotational speed and direction hypermetamorphosis steady, greatly reduced compression shock and vibration, improved life of equipment.
Brief description of the drawings
Below in conjunction with embodiment, the present invention is further illustrated.
Fig. 1 is a kind of principle schematic of novel manipulator for forging walking closed system.
In figure: 1, two-way proportional variable displacement pump; 2, fuel tank; 3, service pump; 4, the first relief valve; 5, pilot operated directional control valve; 6, oil hydraulic motor; 7, the second relief valve; 8, one-way valve; 9, cooler; 10, filter; 11, operation sequential handle; 12, electric control system; 13, motor.
Embodiment
Embodiment 1
A kind of manipulator for forging walking closed system, which comprises at least two-way proportional variable displacement pump 1, oil hydraulic motor 6, operation sequential handle 11, electric control system 12 and motor 13, oil hydraulic motor 6 is by driving pin wheel on tooth bar to realize the front and back walking of manipulator for forging, motor 13 drives two-way proportional variable displacement pump 1, it is characterized in that: the oil outlet of two-way proportional variable displacement pump 1 is directly connected by pipeline with the filler opening of oil hydraulic motor 6, the oil outlet of oil hydraulic motor 6 is directly connected by pipeline with the inlet port of two-way proportional variable displacement pump 1, forms closed circuit; Operation sequential handle 11 is controlled two-way proportional variable displacement pump 1 into and out of oily direction and flow by electric control system 12, and then controls sense of rotation and the speed of oil hydraulic motor 6.
Embodiment 2
As shown in Figure 1, the front and back walking of manipulator for forging is realized at tooth bar upper driving by fluid motor-driven pin wheel, the pressure oil of oil hydraulic motor is provided by two-way proportional variable displacement pump 1, the hydraulic fluid port of two-way proportional variable displacement pump 1 and oil hydraulic motor 6 is directly connected through piping, the oil outlet of proportional variable pump 1 connects the filler opening of oil hydraulic motor 6, oil hydraulic motor 6 oil outlets connect the inlet port of two-way proportional variable displacement pump 1, form closed circuit.
Oil hydraulic motor 6 has two, is communicated with respectively two common walkings that drive manipulator for forging of oil hydraulic motor 6 with two-way proportional variable displacement pump 1.Two-way proportional variable displacement pump 1 normal state drives oil hydraulic motor 6 forward rotation, the walking of manipulator forward, and when the oil outlet of two-way proportional variable displacement pump 1 and inlet port are when reverse, oil hydraulic motor 6 also rotates backward, and realizes manipulator and oppositely walks.
Operation sequential handle 11 is controlled two-way proportional variable displacement pump 1 oil inlet and outlet direction and flow by electric control system 12, thereby control oil hydraulic motor 6 sense of rotation and speed, be direction of travel and the speed of manipulator, the control of passing ratio operating grip 11 and electric control system 12 make oil hydraulic motor 6 sense of rotation and velocity variations excessively steady, greatly reduced compression shock and vibration.
Service pump 3 is all driven by motor 13 with two-way proportional variable displacement pump 1, one end of service pump 3 is communicated with cooler 9, filter 10 and one-way valve 8, the other end of service pump 3 is communicated with fuel tank 2, the first relief valve 4 and one-way valve 8, and all connect in whole circuit system, two the second relief valves 7 are directly connected into system circuit.
The loss of hydraulic oil is mainly let out in two-way proportional variable displacement pump 1 and oil hydraulic motor 6 and the overflow of manipulator overload or vexed Che Shicong the first relief valve 4 and the second relief valve 7 in system, all system drainings are all got back in fuel tank 2, added in closed system by service pump 3 again, ensure the oil mass of closed system.
Service pump 3 provides outer governor pressure to two-way proportional variable displacement pump 1, and filter cooling and to system repairing to whole system through supercooler 9 and filter 10, the effect of isolating when one-way valve 8 plays repairing, relief valve 4 is for adjusting oil compensation pressure, and relief valve 7 is for adjust system pressure.
Pilot operated directional control valve 5 is directly connected into system circuit, and is communicated with first relief valve 4, and pilot operated directional control valve 5 and the first relief valve 4 provide protection in the time of the vexed car of system.
In whole system, most of hydraulic oil closed circulation in two-way proportional variable displacement pump 1 and oil hydraulic motor 6 and pipeline is used, the loss of hydraulic oil is mainly let out in two-way proportional variable displacement pump 1 and oil hydraulic motor 6 and the overflow of manipulator overload or vexed Che Shicong the first relief valve 4 and the second relief valve 7 in system, all system drainings are all got back in fuel tank 2, added in closed system by service pump 3 again, ensure the oil mass of closed system.
All kinds of valves, pump etc. in whole system is all directly to be connected and connect by common hydraulic tubing, and the commutation function that electric control system 12 realizes two-way proportional variable 1 with energy passing ratio operating grip 11 is as the criterion, and does not do special requirement at this.
This novel manipulator for forging walking closed system, by controlling flow and the Output pressure direction of two-way proportional variable displacement pump, is directly controlled the rotating speed of oil hydraulic motor and turns to, thereby realizes the speed of travel to manipulator for forging and the control of direction; Flow and direction that it goes back passing ratio operating grip control two-way proportional variable displacement pump, make oil hydraulic motor rotational speed and direction hypermetamorphosis steady, greatly reduced compression shock and vibration, improved life of equipment.
The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (3)
1. a manipulator for forging walking closed system, which comprises at least two-way proportional variable displacement pump (1), oil hydraulic motor (6), operation sequential handle (11), electric control system (12) and motor (13), oil hydraulic motor (6) is by driving pin wheel on tooth bar to realize the front and back walking of manipulator for forging, motor (13) drives two-way proportional variable displacement pump (1), it is characterized in that: the oil outlet of two-way proportional variable displacement pump (1) is directly connected by pipeline with the filler opening of oil hydraulic motor (6), the oil outlet of oil hydraulic motor (6) is directly connected by pipeline with the inlet port of two-way proportional variable displacement pump (1), form closed circuit, operation sequential handle (11) is controlled two-way proportional variable displacement pump (1) into and out of oily direction and flow by electric control system (12), and then controls sense of rotation and the speed of oil hydraulic motor (6).
2. according to a kind of manipulator for forging walking closed system described in claim 1, it is characterized in that: described manipulator walking closed system also comprises fuel tank (2), the first relief valve (4), the second relief valve (7) and service pump (3), service pump (3) is all driven by motor (13) with two-way proportional variable displacement pump (1), one end of service pump (3) and cooler (9), filter (10) and one-way valve (8) are communicated with, the other end of service pump (3) and fuel tank (2), the first relief valve (4) and one-way valve (8) are communicated with, and all connect in whole circuit system, two the second relief valves (7) are directly connected in system circuit.
3. according to a kind of manipulator for forging walking closed system described in claim 1, it is characterized in that: described manipulator walking closed system also comprises pilot operated directional control valve (5), pilot operated directional control valve (5) is directly connected into system circuit, and is communicated with first relief valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248033.9A CN102773397B (en) | 2012-07-18 | 2012-07-18 | Walking closed system of forging manipulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248033.9A CN102773397B (en) | 2012-07-18 | 2012-07-18 | Walking closed system of forging manipulator |
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| Publication Number | Publication Date |
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| CN102773397A CN102773397A (en) | 2012-11-14 |
| CN102773397B true CN102773397B (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210248033.9A Active CN102773397B (en) | 2012-07-18 | 2012-07-18 | Walking closed system of forging manipulator |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237787A (en) * | 2017-04-27 | 2017-10-10 | 郑州容大科技股份有限公司 | A kind of tobacco harvesting machine of use Closed Hydraulic Driving system |
| CN108278228A (en) * | 2018-02-10 | 2018-07-13 | 无锡德林防务装备股份有限公司 | A kind of closed model pump control hydraulic system |
| CN113958543B (en) * | 2021-09-27 | 2023-07-21 | 太原重工股份有限公司 | Running mechanism control system and control method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1317302A (en) * | 1970-09-03 | 1973-05-16 | Davy & United Eng Co Ltd | Forging control |
| SU893378A1 (en) * | 1978-05-30 | 1981-12-30 | Московское Ордена Ленина И Ордена Трудового Красного Знамени Высшее Техническое Училище Им. Н.Э.Баумана | Percussion-action forging machine hydraulic drive |
| JPH0683874B2 (en) * | 1987-11-16 | 1994-10-26 | 三菱製鋼株式会社 | Titanium alloy hot forming equipment |
| CN101125352A (en) * | 2007-09-27 | 2008-02-20 | 天津市天锻压力机有限公司 | Ultramicro-speed closed loop controlling structure for hydraulic forming machine |
| CN101451548B (en) * | 2007-12-04 | 2010-10-13 | 中南大学 | Hydraulic transmission system implementing rapid starting/stopping and stable steering for large inertia load |
| JP2009264525A (en) * | 2008-04-28 | 2009-11-12 | Nabtesco Corp | Working fluid supply device and electric actuator |
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2012
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Address after: 710032 Dongyuan Road 209, Weiyang District, Xi'an City, Shaanxi Province Patentee after: China National Heavy Machinery Research Institute Co., Ltd. Address before: 710032 Dongyuan Road 209, Weiyang District, Xi'an City, Shaanxi Province Patentee before: China National Heavy Machinery Research Institute Co., Ltd. |
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