CN106151128B - Digital display type high-low pump riveting machine hydraulic station and riveting process - Google Patents

Digital display type high-low pump riveting machine hydraulic station and riveting process Download PDF

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Publication number
CN106151128B
CN106151128B CN201610698949.2A CN201610698949A CN106151128B CN 106151128 B CN106151128 B CN 106151128B CN 201610698949 A CN201610698949 A CN 201610698949A CN 106151128 B CN106151128 B CN 106151128B
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pressure
pump
riveting
oil
valve
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CN106151128A (en
Inventor
艾建江
栗瑞红
董海蛟
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Anyang Sanxing Mechanical Industry Co ltd
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Anyang Sanxing Mechanical Industry Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00Riveting
    • B21J15/10Riveting machines
    • B21J15/16Drives for riveting machines; Transmission means therefor
    • B21J15/20Drives for riveting machines; Transmission means therefor operated by hydraulic or liquid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08Servomotor systems incorporating electrically operated control means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/20507Type of prime mover
    • F15B2211/20515Electric motor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/20576Systems with pumps with multiple pumps
    • F15B2211/20592Combinations of pumps for supplying high and low pressure

Abstract

The invention discloses digital display type high-low pump riveting machine hydraulic station and riveting process, belong to field of machining, including fuel tank, low pressure oil pump group circuit, high pressure oil pump group circuit and cooling device and electrical control gear, low pressure oil pump group circuit includes motor one, low pressure fuel pump and low pressure spill valve module, and the low pressure oil way of low pressure fuel pump output terminal divides two-way:Oil return box is connected to through low pressure spill valve module all the way, for another way through check valve one, electro-hydraulic reversing valve connection riveting pincers oil cylinder, high pressure oil pump group circuit includes motor two, high-pressure oil pump and high pressure kicks valve module;The high-pressure oil passage of high-pressure oil pump output terminal divides two-way:Oil return box is connected to through check valve two, high pressure kicks valve module all the way, another way is connected riveting pincers oil cylinder after check valve two summarizes with low pressure oil way through electro-hydraulic reversing valve.The present invention achievees the purpose that riveting rivet by the combination of the skilful second of a low pressure fuel pump and high-pressure oil pump, and structure simplerization is first evolved, and riveting speed is fast, and fever is few, low noise.

Description

Digital display type high-low pump riveting machine hydraulic station and riveting process
Technical field
The invention belongs to field of machining, and in particular to a kind of digital display type high-low pump riveting machine hydraulic station and riveting work Skill.
Background technology
The riveting machine of domestic production at present is pressed there are two types of power source regions point, i.e. hydraulic riveter and jam riveter.Pneumatically Riveting machine is because the relatively low limitation of Pneumatic pressure is only used for the smaller occasion of riveting pressure, and hydraulic riveter is then since it is pressed Power scope is relatively wide and is widely used in all trades and professions.Most widely used riveting machine is a kind of booster-type riveting machine currently on the market, Its hydraulic station is made of constant displacement pump+inserted valve+pressurized cylinder.So-called booster-type riveting machine, most important feature are will to determine The lower pressure of amount pump output is pressurized to the high-pressure needed for riveting rivet by pressurized cylinder.Its hydraulic valve is inserted using two-way Valve, oil path block uses integral form, and pressurized cylinder and oil path block are manufactured integrally, makes control valve and pressurized cylinder and oil path block Organically it is combined into an entirety.Therefore, this traditional booster-type riveting machine, with riveting speed is steady, caloric value is small, knot The advantages that structure is compact.But simultaneously also have it is complicated, processing and manufacturing difficulty is big, and trouble point is more, it is not easy to repair and riveting speed The shortcomings of being restricted.
The content of the invention
The purpose of the present invention is the booster-type riveting machine for being directed to traditional in the prior art is complicated, processing and manufacturing difficulty Greatly, the technical problems such as more than trouble point, provide a kind of digital display type high-low pump riveting machine hydraulic station and riveting process, realize riveting machine First evolution, simplification, rapid, applied to the domestic and international various production lines with riveted structure, can realize efficiently quickly Rivet the purpose of various rivets.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is:A kind of digital display type high-low pump riveting machine Hydraulic station, it is described including fuel tank, low pressure oil pump group circuit, high pressure oil pump group circuit and cooling device and electrical control gear Low pressure oil pump group circuit includes motor one, low pressure fuel pump and low pressure spill valve module, the low pressure of the low pressure fuel pump output terminal Oil circuit divides two-way:Oil return box is connected to through low pressure spill valve module all the way, another way connects riveting through check valve one, electro-hydraulic reversing valve Oil cylinder is clamped, the high pressure oil pump group circuit includes motor two, high-pressure oil pump and high pressure kicks valve module;The high-pressure oil pump is defeated The high-pressure oil passage of outlet divides two-way:Oil return box is connected to through check valve two, high pressure kicks valve module all the way, another way is through check valve Two summarize with low pressure oil way after through electro-hydraulic reversing valve be connected riveting pincers oil cylinder;In the low-lift pump oil feed line and high pressure fuel supply pump Pressure gauge is separately installed on pipeline, and pressure sensor is installed in riveting pincers oil cylinder oil feed line.
Based on above-mentioned technical proposal, vertical on fuel tank, high-pressure oil pump is respectively adopted in the motor one and motor two And low pressure fuel pump is separately mounted in fuel tank hydraulic oil;High and low pressure spill valve, check valve and electro-hydraulic reversing valve are placed Hydraulic valve bank is formed together, and the hydraulic valve bank is mounted on tank envelope, and electrical control gear and cooling device are mounted on Tank envelope side.
Based on above-mentioned technical proposal, the low pressure spill valve module and high pressure kicks valve module are respectively electromagnetic relief valve, Electromagnet YV1 is provided in low pressure spill valve module, electromagnet YV2 is provided in high pressure kicks valve module.
Based on above-mentioned technical proposal, the electro-hydraulic reversing valve is solenoid directional control valve, and electromagnet is provided in electro-hydraulic reversing valve YV3 and electromagnet YV4.
Based on above-mentioned technical proposal, return filter is also equipped on oil return box oil return line.
Based on above-mentioned technical proposal, the high-pressure oil pump pumps for small flow high pressure, and low pressure fuel pump is big flow low-lift pump.
Based on above-mentioned technical proposal, the electrical control gear is digital display electrical control gear, further includes touch LCD screen, Control electric parameter is operated by touch LCD screen.
A kind of riveting machine riveting process based on digital display type high-low pump riveting machine hydraulic station, the technique is by following steps group Into:
1)Oil pump drain charge:After starting motor one, motor two, the hydraulic oil that low pressure fuel pump is got passes through low pressure spill valve module Drain charge oil return box, the hydraulic oil that high-pressure oil pump is got pass through high pressure kicks valve module drain charge oil return box, remaining each valve is no action;
2)Riveting pincers become into:The electromagnet YV2 in electromagnet YV1, high pressure kicks valve module in low pressure spill valve module, And the electromagnet YV3 in electro-hydraulic reversing valve obtains electric, electro-hydraulic reversing valve left position connection, the liquid that high-pressure oil pump and low pressure fuel pump are got Pressure oil collaborates into riveting pincers oil cylinder rodless cavity piston to be promoted to fast forward through riveting pincers through electro-hydraulic reversing valve left position together;
3)Riveting pincers boosting:After riveting mould contacts rivet, pressure starts to raise, and pressure sensor, which sends signal, at this time makes low pressure Electromagnet YV1 dead electricity in spill valve, low pressure fuel pump drain charge;The hydraulic oil that high-pressure oil pump is got goes successively to riveting pincers oil Cylinder, the oily in-cylinder pressure of riveting pincers continue to raise, and complete riveting action;
4)Riveting pincers return and hydraulic system drain charge:When rivet riveting into after, riveting clamps in-oil cylinder pressure and reaches pressure sensor Setting pressure, pressure sensor sends signal, cuts off 13 left end electromagnet YV3 of electro-hydraulic reversing valve, make electro-hydraulic reversing valve right end Electromagnet YV4 obtains electric, and electro-hydraulic reversing valve is switched to the work of right position;Meanwhile the YV1 in low pressure spill valve module obtains electric, low pressure oil Pump terminates drain charge, clamps oil cylinder fuel feeding to riveting, high-pressure oil pump and low pressure fuel pump oil circuit interflow reach riveting pincers cylinder rod chamber, riveting pincers oil Cylinder is quickly retracted;
5)After riveting pincers oil cylinder is retracted in place, electromagnet YV1, YV2, YV4 are powered off, during electro-hydraulic commutation is in electro-hydraulic reversing valve One action Xun Huan is completed in position, high and low pressure oil pump drain charge.
Advantageous effect:The present invention has the following effects that:1. hydraulic principle is simple, hydraulic station structure is simple, and riveting speed is fast, Easy to maintenance, touch-screen pressure on the number is shown, intuitive display, and operation is easier etc..
2. it is fast to rivet speed:Due to using low-lift pump and the common fuel feeding of high-pressure pump, oil cylinder convergence rivet and rollback are clamped in riveting Dual-pump flow-converging is realized in the process, and the speed of service is quickly;After contacting rivet, the automatic drain charge of low-lift pump is pumped independent by small flow high pressure Riveting is completed, riveting process is steady, and riveting molding is good.It is riveted compared with traditional booster-type, the machine work efficiency is high, rivets speed Soon, and low noise, fever are few.
4. principle is simple, in addition to two groups of Oil pump electrical machineries, only there are two overflow valve and an electro-hydraulic commutations for main hydraulic valve Valve, without traditional compression portion, schematic diagram seems more concise.
5. without traditional pressurized cylinder, and Hydraulic Elements are few, valve block is simple, is easy to make.Thus overall structure becomes Simplify.
6th, with advanced touch screen technology, numerical monitor and adjusting are carried out to pressure.
To sum up, the present invention is combined by the skilful second of a low pressure fuel pump and high-pressure oil pump, to realize in hydraulic system Oil liquid pressure by low pressure to high pressure conversion, so as to achieve the purpose that rivet rivet.Since the conversion from low pressure to high pressure is low Switching between pressure oil pump and high-pressure oil pump, thus speed is quickly.Compared with existing booster-type riveting machine, which greatly simplifies The structure of hydraulic station, not only reduces pressurized cylinder, reduces Hydraulic Elements associated therewith, and improves riveting speed Degree.In contrast, structure simplerization of the present invention, first evolve, and rivet that speed is fast, and fever is few, low noise.
Description of the drawings
Fig. 1 is one of digital display type high-low pump riveting machine hydraulic station assembling structure schematic diagram;
Fig. 2 is the two of digital display type high-low pump riveting machine hydraulic station assembling structure schematic diagram;
Fig. 3 is the three of digital display type high-low pump riveting machine hydraulic station assembling structure schematic diagram;
Fig. 4 is hydraulic principle structure diagram of the present invention.
Figure label:1- fuel tanks, 2- low pressure fuel pump motor groups, 2-1- motors one, 2-2- low pressure fuel pumps, 3- high-pressure oil pumps Motor group, 3-1- motors two, 3-2- high-pressure oil pumps, 4- hydraulic valve banks, 5- check valves one;6- check valves two, 7- pressure gauges are opened It closes, 8- pressure gauges two, 9- pressure valve plug-in units, 10- low pressure relief valves;11- solenoid valves, 12- high-voltage electromagnetic overflow valves, 13- Electro-hydraulic reversing valve, 14- pressure sensors, 15- oil filters;16- pressure measuring tie-ins, 17- pressure gauges one, 18- cooling devices, 19- Return filter, 20- rivetings pincers oil cylinder, 21 be electrical control gear.
Specific embodiment
The present invention will be further described With reference to embodiment, to more fully understand the technology of the present invention side Case.
Embodiment 1:A kind of digital display type high-low pump riveting machine hydraulic station, referring to Fig. 1 and Fig. 2, including fuel tank 1, low pressure oil Pump group circuit, high pressure oil pump group circuit and cooling device 18 and electrical control gear, electrical control gear are digital display electric-controlled Device processed further includes touch LCD screen, with advanced touch screen technology, carries out numerical monitor and adjusting to pressure, no longer uses Traditional pressure gauge and pressure switch are observed and controlled to pressure, using touch LCD screen and pressure sensor to pressure It is acquired, shows and adjusts, can also pass through touch-screen from touch LCD screen display riveting pressure, riveting number Set multiple riveting pressures.
The low pressure oil pump group circuit includes low pressure fuel pump motor group 2(One 2-1 of motor, low pressure fuel pump 2-2)And low pressure Spill valve, low pressure fuel pump 2-2 are big flow low-lift pump, and low pressure spill valve module is illustrated in figure 2 electromagnetic relief valve, including Pressure valve plug-in unit 9, low pressure relief valve 10 and solenoid valve 11 are provided with electromagnet YV1, the low pressure in low pressure spill valve module The low pressure oil way of oil pump output terminal divides two-way:All the way through low pressure spill valve module(Pressure valve plug-in unit 9, low pressure relief valve 10 and Solenoid valve 11)Oil return box is connected to, another way is through check valve 1,13 left position of electro-hydraulic reversing valve connection riveting pincers oil cylinder 20, the height Pressure oil pump group circuit includes high-pressure oil pump motor group 3(Two 3-1 of motor, high-pressure oil pump 3-2)And high-voltage electromagnetic overflow valve 12, it is high Pressure oil pump pumps for small flow high pressure, and electromagnet YV2 is provided in high-voltage electromagnetic overflow valve 12;The high pressure oil of high-pressure oil pump output terminal Two-way is divided on road:Oil return box is connected to through check valve 26, high-voltage electromagnetic overflow valve 12 all the way, another way is through check valve 26 and low pressure Oil circuit connects riveting through 13 left position of electro-hydraulic reversing valve after summarizing and clamps oil cylinder 20;Electro-hydraulic reversing valve 13 be solenoid directional control valve, electro-hydraulic commutation Electromagnet YV3 and electromagnet YV4 is provided in valve.Pressure measuring tie-in 16 and pressure gauge one are installed on low-lift pump oil feed line 17, pressure meter switch 7 and pressure gauge 28 on high pressure fuel supply pump pipeline are installed, and are equipped in riveting pincers oil cylinder oil feed line Pressure sensor 14 is also equipped with return filter 19 on oil return box oil return line.
In the present embodiment:Oil pump electrical machinery is power source, and one 2-1 of motor and two 3-1 of motor are respectively adopted vertical mounted on oil On case, high-pressure oil pump and low pressure fuel pump are separately mounted in fuel tank hydraulic oil;High and low pressure spill valve, check valve and electricity Liquid reversal valve puts together to form hydraulic valve bank, and the hydraulic valve bank is mounted on tank envelope, electrical control gear and cold But device is mounted on tank envelope side.Hydraulic valve bank is made of hydraulic valve and a high-accuracy oil pressure integrated package.This is high-precision Close oil pressure integrated package surface and surrounding are mounted with almost all of hydraulic valve and auxiliary element in system.The present embodiment removes as a result, Outside two groups of Oil pump electrical machineries, main hydraulic valve is only there are two overflow valve and an electro-hydraulic reversing valve, without traditional compression portion, Traditional pressurized cylinder is eliminated, Hydraulic Elements are few, and valve block is simple, are easy to make, and entire hydraulic device seems simple, compact, peace Fill easy to maintenance, and the speed of service is fast, low noise, and fever is small.
Riveting process using the present embodiment digital display type high-low pump riveting machine hydraulic station is as follows:1)Oil pump drain charge:Start After motor one, motor two, the hydraulic oil that low pressure fuel pump is got by low pressure spill valve module drain charge oil return box, get by high-pressure oil pump Hydraulic oil by high pressure kicks valve module drain charge oil return box, remaining each valve is no action;
2)Riveting pincers become into:YV2, Yi Ji electricity in electromagnet YV1, high pressure kicks valve module in low pressure spill valve module YV3 in liquid reversal valve obtains electric, and electro-hydraulic reversing valve left position is connected, and oil return box low tension loop and high tension loop be each turned off, high pressure The hydraulic oil that oil pump and low pressure fuel pump are got collaborates to promote piston into riveting pincers oil cylinder rodless cavity through electro-hydraulic reversing valve left position together Fast forward through riveting pincers;
3)Riveting pincers boosting:After riveting mould contacts rivet, pressure starts to raise, and pressure sensor, which sends signal, at this time makes low pressure Electromagnet YV1 dead electricity in spill valve, low pressure fuel pump drain charge;The hydraulic oil that high-pressure oil pump is got goes successively to riveting pincers oil Cylinder, the oily in-cylinder pressure of riveting pincers continue to raise, and complete riveting action;
4)Riveting pincers return and hydraulic system drain charge:When rivet riveting into after, riveting clamps in-oil cylinder pressure and reaches pressure sensor Setting pressure, pressure sensor sends signal, cuts off 13 left end electromagnet YV3 of electro-hydraulic reversing valve, make electro-hydraulic reversing valve right end Electromagnet YV4 obtains electric, and electro-hydraulic reversing valve is switched to the work of right position;Meanwhile the YV1 in low pressure spill valve module obtains electric, low pressure oil Pump terminates drain charge, clamps oil cylinder fuel feeding to riveting, high-pressure oil pump and low pressure fuel pump oil circuit interflow reach riveting pincers cylinder rod chamber, riveting pincers oil Cylinder is quickly retracted;
5)After riveting pincers oil cylinder is retracted in place, electromagnet YV1, YV2, YV4 are powered off, during electro-hydraulic commutation is in electro-hydraulic reversing valve One action Xun Huan is completed in position, high and low pressure oil pump drain charge.
Due to using low-lift pump and the common fuel feeding of high-pressure pump in the present embodiment technique, oil cylinder convergence rivet and rollback are clamped in riveting Dual-pump flow-converging is realized in the process, and the speed of service is quickly;After contacting rivet, the automatic drain charge of low-lift pump is pumped independent by small flow high pressure Riveting is completed, riveting process is steady, and riveting molding is good.It is riveted compared with traditional booster-type, the machine work efficiency is high, rivets speed Soon, and low noise, fever less, it is fast to rivet speed.

Claims (8)

1. a kind of digital display type high-low pump riveting machine hydraulic station, including fuel tank, low pressure oil pump group circuit, high pressure oil pump group circuit with And cooling device and electrical control gear, it is characterized in that:The low pressure oil pump group circuit includes motor one, low pressure fuel pump and low Pressurized overflow valve module, the low pressure oil way of the low pressure fuel pump output terminal divide two-way:It is connected to back all the way through low pressure spill valve module Fuel tank, for another way through check valve one, electro-hydraulic reversing valve connection riveting pincers oil cylinder, the high pressure oil pump group circuit includes motor two, height Pressure oil pump and high pressure kicks valve module;The high-pressure oil passage of the high-pressure oil pump output terminal divides two-way:All the way through check valve two, height Pressurized overflow valve module is connected to oil return box, and another way is connected riveting pincers after check valve two summarizes with low pressure oil way through electro-hydraulic reversing valve Oil cylinder;Pressure gauge is separately installed on the low-lift pump oil feed line and high pressure fuel supply pump pipeline, and is supplied in riveting pincers oil cylinder Oil pipe line is equipped with pressure sensor.
2. digital display type high-low pump riveting machine hydraulic station according to claim 1, it is characterized in that:The motor one and motor Two be respectively adopted it is vertical be mounted on fuel tank on, high-pressure oil pump and low pressure fuel pump are separately mounted in fuel tank hydraulic oil;High and low pressure Spill valve, check valve and electro-hydraulic reversing valve put together to form hydraulic valve bank, and the hydraulic valve bank is mounted on fuel tank On shell, the electrical control gear and cooling device are mounted on tank envelope side.
3. digital display type high-low pump riveting machine hydraulic station according to claim 1, it is characterized in that:The low pressure spill valve group Part and high pressure kicks valve module are respectively electromagnetic relief valve, and electromagnet YV1, high-pressure overflow valve are provided in low pressure spill valve module Electromagnet YV2 is provided in component.
4. digital display type high-low pump riveting machine hydraulic station according to claim 3, it is characterized in that:The electro-hydraulic reversing valve is Solenoid directional control valve is provided with electromagnet YV3 and electromagnet YV4 in electro-hydraulic reversing valve.
5. digital display type high-low pump riveting machine hydraulic station according to claim 1, it is characterized in that:In the oil return pipe of oil return box Road is also equipped with return filter.
6. digital display type high-low pump riveting machine hydraulic station according to claim 1, it is characterized in that:The high-pressure oil pump is small Flow high-pressure pump, low pressure fuel pump are big flow low-lift pump.
7. digital display type high-low pump riveting machine hydraulic station according to claim 1, it is characterized in that:The electrical control gear For digital display type electrical control gear.
8. a kind of riveting machine riveting process using digital display type high-low pump riveting machine hydraulic station as described in claim 1, It is characterized in:The technique comprises the steps of:
1)Oil pump drain charge:After starting motor one, motor two, the hydraulic oil that low pressure fuel pump is got passes through low pressure spill valve module drain charge Oil return box, the hydraulic oil that high-pressure oil pump is got pass through high pressure kicks valve module drain charge oil return box, remaining each valve is no action;
2)Riveting pincers become into:Electromagnet YV2 in electromagnet YV1, high pressure kicks valve module in low pressure spill valve module and Electromagnet YV3 in electro-hydraulic reversing valve obtains electric, electro-hydraulic reversing valve left position connection, the hydraulic oil that high-pressure oil pump and low pressure fuel pump are got Collaborate into riveting pincers oil cylinder rodless cavity piston to be promoted to fast forward through riveting pincers together through electro-hydraulic reversing valve left position;
3)Riveting pincers boosting:After riveting mould contacts rivet, pressure starts to raise, and pressure sensor, which sends signal, at this time makes low pressure spill Electromagnet YV1 dead electricity in valve module, low pressure fuel pump drain charge;The hydraulic oil that high-pressure oil pump is got goes successively to riveting pincers oil cylinder, riveting The oily in-cylinder pressure of pincers continues to raise, and completes riveting action;
4)Riveting pincers return and hydraulic system drain charge:When rivet riveting into after, riveting clamps in-oil cylinder pressure and reaches setting for pressure sensor Constant-pressure, pressure sensor send signal, cut off electro-hydraulic reversing valve(13)Left end electromagnet YV3 makes electro-hydraulic reversing valve right end electric Magnet YV4 obtains electric, and electro-hydraulic reversing valve is switched to the work of right position;Meanwhile the YV1 in low pressure spill valve module obtains electric, low pressure fuel pump Terminate drain charge, clamp oil cylinder fuel feeding to riveting, high-pressure oil pump and low pressure fuel pump oil circuit interflow reach riveting pincers cylinder rod chamber, riveting pincers oil cylinder Quickly retract;
5)After riveting pincers oil cylinder is retracted in place, electromagnet YV1, YV2, YV4 are powered off, electro-hydraulic in electro-hydraulic reversing valve to commutate in middle position, One action Xun Huan is completed in high and low pressure oil pump drain charge.
CN201610698949.2A 2016-08-22 2016-08-22 Digital display type high-low pump riveting machine hydraulic station and riveting process Active CN106151128B (en)

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CN109702134B (en) * 2018-12-20 2020-04-07 杭州电子科技大学 Electro-hydraulic riveting device and riveting method thereof
CN110374939B (en) * 2019-07-19 2020-05-19 南京理工军邦特种智能装备研究院有限公司 Hydraulic system for providing two different pressures and pressure supply method
CN110961566A (en) * 2019-12-20 2020-04-07 山东中车同力达智能机械有限公司 Digital riveting workstation suitable for operation of crossing rail

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