CN109253129A - The test macro and method of radial forging machine main hydraulic cylinder - Google Patents
The test macro and method of radial forging machine main hydraulic cylinder Download PDFInfo
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- CN109253129A CN109253129A CN201710566952.3A CN201710566952A CN109253129A CN 109253129 A CN109253129 A CN 109253129A CN 201710566952 A CN201710566952 A CN 201710566952A CN 109253129 A CN109253129 A CN 109253129A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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Abstract
The invention discloses the test macros and method of a kind of radial forging machine main hydraulic cylinder, this system includes main hydraulic cylinder cylinder body, the intracorporal piston rod of cylinder, front and rear cover, prefill valve, test frame, guide's hydraulic cylinder and hydraulic test mechanism, main hydraulic cylinder cylinder body is set in test frame, front and rear cover is set to test frame front/rear end, guide's hydraulic cylinder is set to rear end cap and is servo-actuated by prefill valve and piston rod, and test frame is equipped with the oil back chamber of connection main hydraulic cylinder and the hydraulic fluid port of backhaul chamber；Hydraulic test mechanism connects the hydraulic fluid port of main hydraulic cylinder oil back chamber, backhaul chamber and high pressure chest and the rod chamber and rodless cavity of guide's hydraulic cylinder by several Hydraulic Elements；This method realizes main hydraulic cylinder movement, lowest starting pressure, internal leakage and voltage-withstand test by hydraulic test mechanism.This test macro and method realize the off-line test of main hydraulic cylinder, save the manpower and material resources of maintenance, improve overhaul efficiency, avoid main hydraulic cylinder from dismounting in the repetition of forging machine ontology, ensure that repair quality.
Description
Technical field
The present invention relates to the test macros and method of a kind of radial forging machine main hydraulic cylinder.
Background technique
Radial forging machine is the key equipment of special steel forging, four tups of radial forging machine by four with it is horizontal at
The main hydraulic cylinder driving of 45° angle arrangement, forges and presses workpiece shaping.Radial forging machine main hydraulic cylinder cylinder diameter 730mm, diameter of piston rod
670mm/660mm weighs about 16 tons after main hydraulic cylinder assembly, and structure is special, is different from conventional hydraulic cylinder, is mainly reflected in following
Three aspects: first, there are two working chambers for conventional hydraulic cylinder, and main hydraulic cylinder has three high pressure chest, backhaul chamber and oil back chamber works
Make chamber；Second, conventional hydraulic cylinder ontology has the hydraulic fluid port of flange or threaded connection, and main hydraulic cylinder only has high pressure chest oily on end cap
Mouthful flange, other two chamber are only equipped with multiple oil flow channels on cylinder body, but can not connecting flange or connector, need to will entire main liquid
Cylinder pressure is packed into forging machine ontology, can pass through the hydraulic fluid port flanged joint oil circuit on forging machine ontology；Third, on main hydraulic cylinder rear end cap
Equipped with prefill valve, and in main hydraulic cylinder work, prefill valve is servo-actuated by the control of guide's hydraulic cylinder and the piston rod of main hydraulic cylinder.
Since there are above-mentioned particularity in structure for main hydraulic cylinder, can not be carried out according to a conventional method after main hydraulic cylinder maintenance
Off-line test, booting is needed in thread test if there are maintenance issues for main hydraulic cylinder after main hydraulic cylinder can only be packed into forging machine ontology
Main hydraulic cylinder is split out into strip inspection from forging machine ontology, and splits out to return again from forging machine ontology and fills a main hydraulic cylinder and need to consume
Shi Ershi multiple hours, significant wastage time, human and material resources.
Because lacking special tooling and test method, therefore the main hydraulic cylinder after maintenance does not do off-line test generally, carries out
Off-line test must just design and produce special tooling and design test system building, and main hydraulic cylinder and guide are hydraulic when in-site installation
It is fitted with displacement sensor in cylinder, and is controlled using servo valve, it is ensured that guide's hydraulic cylinder and main hydraulic cylinder piston
Bar is servo-actuated, but off-line test does not have the condition of connection sensor, it is also not possible to it is controlled using servo valve, therefore, design
Using the test loop of conventional hydraulic valve control guide's hydraulic cylinder and main hydraulic cylinder, to there are three the progress of the main hydraulic cylinder of working chamber
Test just becomes the problem of main hydraulic cylinder test.
Summary of the invention
Technical problem to be solved by the invention is to provide the test macros and method of a kind of radial forging machine main hydraulic cylinder, originally
Test macro overcome main hydraulic cylinder can not off-line test defect, effectively save main hydraulic cylinder maintenance human and material resources, mention
High overhaul efficiency, this method implement off-line test to the main hydraulic cylinder of special construction, avoid main hydraulic cylinder in forging machine ontology
It repeats to dismount, ensure that the repair quality of main hydraulic cylinder.
In order to solve the above technical problems, the test macro of radial forging machine main hydraulic cylinder of the present invention include main hydraulic cylinder cylinder body,
Set on the intracorporal piston rod of the cylinder, set on the drive end bearing bracket and rear end cap of the cylinder body front/rear end, set on the rear end cap
Prefill valve, this system further include test frame, guide's hydraulic cylinder and hydraulic test mechanism, and the main hydraulic cylinder cylinder body is set to described
It tests in frame, the drive end bearing bracket and rear end cap are set to the front/rear end for testing frame, and guide's hydraulic cylinder is set to institute
It states rear end cap and is servo-actuated by the prefill valve and the piston rod, it is hydraulic that the test frame is respectively equipped with the connection master
The hydraulic fluid port of cylinder oil back chamber and backhaul chamber；
The hydraulic test mechanism includes the first hydraulic pressure pump group, the second hydraulic pressure pump group, the first overflow valve, the second overflow valve, first
Check valve, second one-way valve, the first reversal valve, the second reversal valve, the first shut-off valve, the second shut-off valve, first pressure gauge, second
Pressure gauge, third pressure gauge, the 4th pressure gauge and the 5th pressure gauge, first hydraulic pressure pump group, the first check valve and first are changed
It is sequentially connected in series to valve, first overflow valve is in parallel with first hydraulic pressure pump group, the first pressure gauge connection described first
The A mouth of the output end of check valve, first reversal valve is separately connected the master through first shut-off valve and the second shut-off valve
The hydraulic fluid port of hydraulic cylinder oil back chamber and backhaul chamber, the second pressure gauge and third pressure gauge be separately connected first shut-off valve and
The output end of second shut-off valve, the B mouth of first reversal valve connect the high pressure chest hydraulic fluid port of the main hydraulic cylinder, the 4th pressure
Power table connects the B mouth of first reversal valve, and second hydraulic pressure pump group, second one-way valve and the second reversal valve are sequentially connected in series,
Second overflow valve is in parallel with second hydraulic pressure pump group, and the 5th pressure gauge connects the second one-way valve output end,
The A mouth of second reversal valve is separately connected the rod chamber and rodless cavity of guide's hydraulic cylinder with B mouthfuls.
A kind of test method of radial forging machine main hydraulic cylinder includes the following steps:
Step 1: main hydraulic cylinder motion test；
A, main hydraulic cylinder sky load testing opens the first hydraulic pressure pump group and the second hydraulic pressure pump group, adjusts the first overflow valve, it is observed that
First pressure gauge numerical value sets the first hydraulic pressure pump group outlet pressure as 5MPa；The second overflow valve is adjusted, it is observed that the 5th pressure gauge
Numerical value sets the second hydraulic pressure pump group outlet pressure as 16MPa；Open the first shut-off valve and the second shut-off valve, the second reversal valve electricity
Prefill valve is closed in magnet a electrification, the oil inlet of guide's hydraulic cylinder rodless cavity, rod chamber oil return；First reversal valve electromagnet a electrification, it is main
The oil inlet of hydraulic cylinder high pressure chest, backhaul chamber and oil back chamber oil return push main hydraulic cylinder piston rod to reach bottom；
B, after main hydraulic cylinder piston rod reaches bottom, the power-off of the first reversal valve electromagnet, the second reversal valve electromagnet b electrification, first
Prefill valve is opened in the oil inlet of drain cylinder pressure rod chamber, rodless cavity oil return；The first shut-off valve is closed, opens the second shut-off valve, first changes
It is charged to valve electromagnet b, the oil inlet of main hydraulic cylinder backhaul chamber, oil back chamber are connected to high pressure chest and pass through the first reversal valve and connect back to
Oil, main hydraulic cylinder piston rod are retracted into bottom；
Step 2: main hydraulic cylinder lowest starting pressure is tested；
A, main hydraulic cylinder idling carries, and opens the first hydraulic pressure pump group and the second hydraulic pressure pump group, passes through the second overflow valve and the 5th pressure
Table sets the second hydraulic pressure pump group outlet pressure as 16MPa；Second reversal valve electromagnet a electrification, guide's hydraulic cylinder rodless cavity into
Oil, rod chamber oil return close prefill valve；Open the first shut-off valve and the second shut-off valve；First reversal valve electromagnet a electrification, delays
It is slow to adjust the first overflow valve, make the first hydraulic pressure pump group outlet pressure start from scratch gradually rise to main hydraulic cylinder piston rod stretch out it is dynamic
Make, records the numerical value of the 4th pressure gauge at this time, lowest starting pressure when as main hydraulic cylinder piston rod stretches out；
B, main hydraulic cylinder idling carries, and opens the first hydraulic pressure pump group and the second hydraulic pressure pump group, passes through the second overflow valve and the 5th pressure
Table sets the second hydraulic pressure pump group outlet pressure as 16MPa；Second reversal valve electromagnet b electrification, guide's hydraulic cylinder rod chamber into
Oil, rodless cavity oil return open prefill valve；The first shut-off valve is closed, the second shut-off valve is opened, the first reversal valve electromagnet b is charged,
The first overflow valve is slowly adjusted, so that the first hydraulic pressure pump group outlet pressure is started from scratch and gradually rises to the retraction of main hydraulic cylinder piston rod
Movement records the numerical value of third pressure gauge at this time, lowest starting pressure when as main hydraulic cylinder piston rod retracts；
Step 3: main hydraulic cylinder internal leakage is tested；
A, main hydraulic cylinder backhaul endoluminal leak is tested, and is fully retracted into main hydraulic cylinder piston rod by step 1 B, the second reversal valve electricity
Prefill valve is closed in magnet a electrification, and adjusting the first overflow valve to the first hydraulic pressure pump group outlet pressure is 7Mpa, pressure maintaining 10 minutes, is divided
It Ce Liang not high pressure chest oil outlet leakage rate and oil back chamber oil outlet leakage rate；
B, main hydraulic cylinder high pressure endoluminal leak is tested, and so that the stretching of main hydraulic cylinder piston rod is rested on 110mm stroke by step 1 A,
Piston rod is withstood using kiloton hydraulic press, the first overflow valve is adjusted, makes main hydraulic cylinder high pressure cavity pressure 14.5Mpa, pressure maintaining 10
Minute, measure guide's hydraulic cylinder rodless cavity oil outlet leakage rate and main hydraulic cylinder oil back chamber oil outlet leakage rate；
Step 4: main hydraulic cylinder pressure test；
A, main hydraulic cylinder backhaul chamber voltage-withstand test is fully retracted into main hydraulic cylinder piston rod by step 1 B, the second reversal valve electromagnetism
Iron a electrification, close prefill valve, adjustings the first overflow valve to the first hydraulic pressure pump group outlet pressure be 10.5Mpa, pressure maintaining 10 minutes；
B, main hydraulic cylinder oil back chamber voltage-withstand test is fully retracted into main hydraulic cylinder piston rod by step 1 B, the second reversal valve electromagnetism
Iron a electrification, closes prefill valve.Adjusting the first overflow valve makes the first hydraulic pressure pump group outlet pressure be reduced to zero, the first reversal valve electromagnetism
Iron power-off, the second reversal valve power-off, closes the second shut-off valve, opens the first shut-off valve, and the first reversal valve electromagnet b electrification is adjusted
Save the first overflow valve to the first hydraulic pressure pump group outlet pressure be 1.5Mpa, pressure maintaining 10 minutes；
C, main hydraulic cylinder high pressure chest voltage-withstand test makes the stretching of main hydraulic cylinder piston rod rest on 110mm stroke, adopts by step 1 A
Piston rod is withstood with kiloton hydraulic press, the first overflow valve is adjusted, makes main hydraulic cylinder high pressure cavity pressure 14.5Mpa, pressure maintaining 10 divides
Clock.
Further, main hydraulic cylinder motion test in step 1, is repeated in A and step B, keeps main hydraulic cylinder piston rod total travel past
Move 5 times again or more.
Since the test macro and method of radial forging machine main hydraulic cylinder of the present invention use above-mentioned technical proposal, i.e. this system
Including main hydraulic cylinder cylinder body, the intracorporal piston rod of cylinder, front and rear cover, prefill valve, test frame, guide's hydraulic cylinder and hydraulic test
Mechanism, main hydraulic cylinder cylinder body are set in test frame, and front and rear cover is set to test frame front/rear end, after guide's hydraulic cylinder is set to
End cap and, the oil of test frame oil back chamber and backhaul chamber equipped with connection main hydraulic cylinder servo-actuated by prefill valve and piston rod
Mouthful；Hydraulic test mechanism connects hydraulic fluid port and the elder generation of main hydraulic cylinder oil back chamber, backhaul chamber and high pressure chest by several Hydraulic Elements
The rod chamber and rodless cavity of drain cylinder pressure；This method by hydraulic test mechanism realize main hydraulic cylinder movement, lowest starting pressure,
Internal leakage and voltage-withstand test.This test macro overcome main hydraulic cylinder can not off-line test defect, effectively save main liquid
The human and material resources of cylinder pressure maintenance, improve overhaul efficiency, and this method is implemented off-line test to the main hydraulic cylinder of special construction, kept away
Exempt from main hydraulic cylinder to dismount in the repetition of forging machine ontology, ensure that the repair quality of main hydraulic cylinder.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:
Fig. 1 is the test macro schematic diagram of radial forging machine main hydraulic cylinder of the present invention.
Specific embodiment
Embodiment is as shown in Figure 1, the test macro of radial forging machine main hydraulic cylinder of the present invention includes main hydraulic cylinder cylinder body 1, sets
In in the cylinder body 1 piston rod 2, set on the drive end bearing bracket 3 and rear end cap 4 of 1 front/rear end of cylinder body, be set to the rear end cap
4 prefill valve 5, this system further include test frame 6, guide's hydraulic cylinder 7 and hydraulic test mechanism 8, the main hydraulic cylinder cylinder body 1
In the test frame 6, the drive end bearing bracket 3 and rear end cap 4 are set to the front/rear end for testing frame 6, the guide
Hydraulic cylinder 7 is set to the rear end cap 4 and, test frame 6 difference servo-actuated by the prefill valve 5 and the piston rod 2
Equipped with the hydraulic fluid port 11,12 for being connected to the main hydraulic cylinder oil back chamber and backhaul chamber；
The hydraulic test mechanism includes the first hydraulic pressure pump group 81, the second hydraulic pressure pump group 82, the first overflow valve 83, the second overflow valve
84, the first check valve 85, second one-way valve 86, the first reversal valve 87, the second reversal valve 88, the cut-off of the first shut-off valve 89, second
Valve 90, first pressure gauge 91, second pressure gauge 92, third pressure gauge 93, the 4th pressure gauge 94 and the 5th pressure gauge 95, described
One hydraulic pressure pump group 81, the first check valve 85 and the first reversal valve 87 are sequentially connected in series, first overflow valve 83 and first liquid
Press pump group 81 is in parallel, and the first pressure gauge 91 connects the output end of first check valve 85, the A of first reversal valve 87
Mouth is separately connected the main hydraulic cylinder oil back chamber hydraulic fluid port 11 and backhaul chamber oil through first shut-off valve 89 and the second shut-off valve 90
Mouthfuls 12, the second pressure gauge 92 and third pressure gauge 93 are separately connected the defeated of first shut-off valve 89 and the second shut-off valve 90
Outlet, the B mouth of first reversal valve 87 connect the high pressure chest hydraulic fluid port 13 of the main hydraulic cylinder, the 4th pressure gauge 94 connection
The B mouth of first reversal valve 87, second hydraulic pressure pump group 82, second one-way valve 86 and the second reversal valve 88 are sequentially connected in series,
Second overflow valve 84 is in parallel with second hydraulic pressure pump group 82, and the 5th pressure gauge 95 connects the second one-way valve 86
Output end, the A mouth of second reversal valve 88 are separately connected the rod chamber 71 and rodless cavity 72 of guide's hydraulic cylinder 7 with B mouthfuls.
A kind of test method of radial forging machine main hydraulic cylinder includes the following steps:
Step 1: main hydraulic cylinder motion test；
A, main hydraulic cylinder sky load testing opens the first hydraulic pressure pump group 81 and the second hydraulic pressure pump group 82, adjusts the first overflow valve 83,
It is observed that 91 numerical value of first pressure gauge, sets 81 outlet pressure of the first hydraulic pressure pump group as 5MPa；The second overflow valve 84 is adjusted, through seeing
95 numerical value of the 5th pressure gauge is examined, sets 82 outlet pressure of the second hydraulic pressure pump group as 16MPa；Open the first shut-off valve 89 and second section
Only valve 90,88 electromagnet a of the second reversal valve electrification, filling liquid is closed in 7 rodless cavity of guide's hydraulic cylinder, 72 oil inlet, 71 oil return of rod chamber
Valve 5；First reversal valve, 87 electromagnet a electrification, 11 oil return of 13 oil inlet of main hydraulic cylinder high pressure chest, backhaul chamber 12 and oil back chamber push
Main hydraulic cylinder piston rod 2 reaches bottom；
B, after main hydraulic cylinder piston rod 2 reaches bottom, the power-off of 87 electromagnet of the first reversal valve, 88 electromagnet b band of the second reversal valve
Prefill valve 5 is opened in electricity, 7 rod chamber of guide's hydraulic cylinder, 71 oil inlet, 72 oil return of rodless cavity；The first shut-off valve 89 is closed, opens second
Shut-off valve 90,87 electromagnet b of the first reversal valve electrification, 12 oil inlet of main hydraulic cylinder backhaul chamber, oil back chamber 11 are connected to high pressure chest 13
And oil return is connected by the first reversal valve 87, main hydraulic cylinder piston rod 2 is retracted into bottom；
Step 2: main hydraulic cylinder lowest starting pressure is tested；
A, main hydraulic cylinder idling carries, and opens the first hydraulic pressure pump group 81 and the second hydraulic pressure pump group 82, passes through the second overflow valve 84 and the
Five pressure gauges 95 set 82 outlet pressure of the second hydraulic pressure pump group as 16MPa；Second reversal valve, 88 electromagnet a electrification, guide are hydraulic
Prefill valve 5 is closed in 7 rodless cavity of cylinder, 72 oil inlet, 71 oil return of rod chamber；Open the first shut-off valve 89 and the second shut-off valve 90；First
87 electromagnet a of reversal valve electrification, slowly adjusts the first overflow valve 83,81 outlet pressure of the first hydraulic pressure pump group is made to start from scratch gradually
It is increased to 2 extending action of main hydraulic cylinder piston rod, records the numerical value of the 4th pressure gauge 94 at this time, as main hydraulic cylinder piston rod 2
Lowest starting pressure when stretching；
B, main hydraulic cylinder idling carries, and opens the first hydraulic pressure pump group 81 and the second hydraulic pressure pump group 82, passes through the second overflow valve 84 and the
Five pressure gauges 95 set 82 outlet pressure of the second hydraulic pressure pump group as 16MPa；Second reversal valve, 88 electromagnet b electrification, guide are hydraulic
Prefill valve 5 is opened in 7 rod chamber of cylinder, 71 oil inlet, 72 oil return of rodless cavity；The first shut-off valve 89 is closed, the second shut-off valve 90 is opened, the
One reversal valve, 87 electromagnet b electrification, slowly adjust the first overflow valve 83, make 81 outlet pressure of the first hydraulic pressure pump group start from scratch by
Edge up up to 2 retract action of main hydraulic cylinder piston rod, records the numerical value of third pressure gauge 93 at this time, as main hydraulic cylinder piston rod
Lowest starting pressure when 2 retraction；
Step 3: main hydraulic cylinder internal leakage is tested；
A, main hydraulic cylinder backhaul endoluminal leak is tested, and is fully retracted into main hydraulic cylinder piston rod 2 by step 1 B, the second reversal valve
88 electromagnet a electrification, closes prefill valve 5, and adjusting 81 outlet pressure of the first 83 to first hydraulic pressure pump group of overflow valve is 7Mpa, pressure maintaining
10 minutes, 13 oil outlet leakage rate of high pressure chest and 11 leakage rate of oil back chamber oil outlet were measured respectively；
B, main hydraulic cylinder high pressure endoluminal leak is tested, and so that the stretching of main hydraulic cylinder piston rod 2 is rested on 110mm stroke by step 1 A,
Piston rod 2 is withstood using kiloton hydraulic press, the first overflow valve 83 is adjusted, makes 13 pressure 14.5Mpa of main hydraulic cylinder high pressure chest, is protected
Pressure 10 minutes measures 7 rodless cavity of guide's hydraulic cylinder, 72 oil outlet leakage rate and 11 leakage rate of main hydraulic cylinder oil back chamber oil outlet；
Step 4: main hydraulic cylinder pressure test；
A, main hydraulic cylinder backhaul chamber voltage-withstand test is fully retracted into main hydraulic cylinder piston rod 2 by step 1 B, the second reversal valve 88
Electromagnet a electrification, closes prefill valve 5, and adjusting 8 outlet pressure of the first 83 to first hydraulic pressure pump group of overflow valve is 10.5Mpa, pressure maintaining
10 minutes；
B, main hydraulic cylinder oil back chamber voltage-withstand test is fully retracted into main hydraulic cylinder piston rod 2 by step 1 B, the second reversal valve 88
Electromagnet a electrification, closes prefill valve 5；Adjusting the first overflow valve 83 makes 81 outlet pressure of the first hydraulic pressure pump group be reduced to zero, and first changes
It is powered off to 87 electromagnet of valve, the second shut-off valve 90 is closed in the power-off of the second reversal valve 88, opens the first shut-off valve 89, the first commutation
87 electromagnet b of valve electrification, adjustings 81 outlet pressure of the first 83 to first hydraulic pressure pump group of overflow valve be 1.5Mpa, pressure maintaining 10 minutes；
C, main hydraulic cylinder high pressure chest voltage-withstand test makes the stretching of main hydraulic cylinder piston rod 2 rest on 110mm stroke, adopts by step 1 A
Piston rod 2 is withstood with kiloton hydraulic press, the first overflow valve 83 is adjusted, makes 13 pressure 14.5Mpa of main hydraulic cylinder high pressure chest, pressure maintaining
10 minutes.
Preferably, main hydraulic cylinder motion test in step 1, is repeated in A and step B, keeps main hydraulic cylinder piston rod 2 complete
Stroke reciprocating 5 times or more.
Radial forging machine using the main hydraulic cylinder is mostly German SMS-MEER Products, to solve radial forging machine master
The problem of hydraulic cylinder off-line test, this system have designed and produced the special tooling of test frame, and when test assembles main hydraulic cylinder
After be packed into the test frame, and assemble guide's hydraulic cylinder, connect main hydraulic cylinder oil back chamber hydraulic fluid port and backhaul chamber hydraulic fluid port, it is hydraulic
Mechanism for testing is separately connected oil back chamber hydraulic fluid port, backhaul chamber hydraulic fluid port and the high pressure chest hydraulic fluid port of main hydraulic cylinder and having for guide's hydraulic cylinder
Rod cavity and rodless cavity, to realize the movement of main hydraulic cylinder, lowest starting pressure, internal leakage and voltage-withstand test.
Claims (3)
1. a kind of test macro of radial forging machine main hydraulic cylinder, including main hydraulic cylinder cylinder body, be set to the intracorporal piston rod of the cylinder,
Set on the drive end bearing bracket and rear end cap of the cylinder body front/rear end, set on the prefill valve of the rear end cap, it is characterised in that: further include
Frame, guide's hydraulic cylinder and hydraulic test mechanism are tested, the main hydraulic cylinder cylinder body is set in the test frame, the front end
Lid and rear end cap are set to the front/rear end of the test frame, and guide's hydraulic cylinder is set to the rear end cap and by described
Prefill valve and the piston rod are servo-actuated, and the test frame is respectively equipped with the oil for being connected to the main hydraulic cylinder oil back chamber and backhaul chamber
Mouthful；
The hydraulic test mechanism includes the first hydraulic pressure pump group, the second hydraulic pressure pump group, the first overflow valve, the second overflow valve, first
Check valve, second one-way valve, the first reversal valve, the second reversal valve, the first shut-off valve, the second shut-off valve, first pressure gauge, second
Pressure gauge, third pressure gauge, the 4th pressure gauge and the 5th pressure gauge, first hydraulic pressure pump group, the first check valve and first are changed
It is sequentially connected in series to valve, first overflow valve is in parallel with first hydraulic pressure pump group, the first pressure gauge connection described first
The A mouth of the output end of check valve, first reversal valve is separately connected the master through first shut-off valve and the second shut-off valve
The hydraulic fluid port of hydraulic cylinder oil back chamber and backhaul chamber, the second pressure gauge and third pressure gauge be separately connected first shut-off valve and
The output end of second shut-off valve, the B mouth of first reversal valve connect the high pressure chest hydraulic fluid port of the main hydraulic cylinder, the 4th pressure
Power table connects the B mouth of first reversal valve, and second hydraulic pressure pump group, second one-way valve and the second reversal valve are sequentially connected in series,
Second overflow valve is in parallel with second hydraulic pressure pump group, and the 5th pressure gauge connects the second one-way valve output end,
The A mouth of second reversal valve is separately connected the rod chamber and rodless cavity of guide's hydraulic cylinder with B mouthfuls.
2. a kind of test method of radial forging machine main hydraulic cylinder, it is characterised in that this method includes the following steps:
Step 1: main hydraulic cylinder motion test；
A, main hydraulic cylinder sky load testing opens the first hydraulic pressure pump group and the second hydraulic pressure pump group, adjusts the first overflow valve, it is observed that
First pressure gauge numerical value sets the first hydraulic pressure pump group outlet pressure as 5MPa；The second overflow valve is adjusted, it is observed that the 5th pressure gauge
Numerical value sets the second hydraulic pressure pump group outlet pressure as 16MPa；Open the first shut-off valve and the second shut-off valve, the second reversal valve electricity
Prefill valve is closed in magnet a electrification, the oil inlet of guide's hydraulic cylinder rodless cavity, rod chamber oil return；First reversal valve electromagnet a electrification, it is main
The oil inlet of hydraulic cylinder high pressure chest, backhaul chamber and oil back chamber oil return push main hydraulic cylinder piston rod to reach bottom；
B, after main hydraulic cylinder piston rod reaches bottom, the power-off of the first reversal valve electromagnet, the second reversal valve electromagnet b electrification, first
Prefill valve is opened in the oil inlet of drain cylinder pressure rod chamber, rodless cavity oil return；The first shut-off valve is closed, opens the second shut-off valve, first changes
It is charged to valve electromagnet b, the oil inlet of main hydraulic cylinder backhaul chamber, oil back chamber are connected to high pressure chest and pass through the first reversal valve and connect back to
Oil, main hydraulic cylinder piston rod are retracted into bottom；
Step 2: main hydraulic cylinder lowest starting pressure is tested；
A, main hydraulic cylinder idling carries, and opens the first hydraulic pressure pump group and the second hydraulic pressure pump group, passes through the second overflow valve and the 5th pressure
Table sets the second hydraulic pressure pump group outlet pressure as 16MPa；Second reversal valve electromagnet a electrification, guide's hydraulic cylinder rodless cavity into
Oil, rod chamber oil return close prefill valve；Open the first shut-off valve and the second shut-off valve；First reversal valve electromagnet a electrification, delays
It is slow to adjust the first overflow valve, make the first hydraulic pressure pump group outlet pressure start from scratch gradually rise to main hydraulic cylinder piston rod stretch out it is dynamic
Make, records the numerical value of the 4th pressure gauge at this time, lowest starting pressure when as main hydraulic cylinder piston rod stretches out；
B, main hydraulic cylinder idling carries, and opens the first hydraulic pressure pump group and the second hydraulic pressure pump group, passes through the second overflow valve and the 5th pressure
Table sets the second hydraulic pressure pump group outlet pressure as 16MPa；Second reversal valve electromagnet b electrification, guide's hydraulic cylinder rod chamber into
Oil, rodless cavity oil return open prefill valve；The first shut-off valve is closed, the second shut-off valve is opened, the first reversal valve electromagnet b is charged,
The first overflow valve is slowly adjusted, so that the first hydraulic pressure pump group outlet pressure is started from scratch and gradually rises to the retraction of main hydraulic cylinder piston rod
Movement records the numerical value of third pressure gauge at this time, lowest starting pressure when as main hydraulic cylinder piston rod retracts；
Step 3: main hydraulic cylinder internal leakage is tested；
A, main hydraulic cylinder backhaul endoluminal leak is tested, and is fully retracted into main hydraulic cylinder piston rod by step 1 B, the second reversal valve electricity
Prefill valve is closed in magnet a electrification, and adjusting the first overflow valve to the first hydraulic pressure pump group outlet pressure is 7Mpa, pressure maintaining 10 minutes, is divided
It Ce Liang not high pressure chest oil outlet leakage rate and oil back chamber oil outlet leakage rate；
B, main hydraulic cylinder high pressure endoluminal leak is tested, and so that the stretching of main hydraulic cylinder piston rod is rested on 110mm stroke by step 1 A,
Piston rod is withstood using kiloton hydraulic press, the first overflow valve is adjusted, makes main hydraulic cylinder high pressure cavity pressure 14.5Mpa, pressure maintaining 10
Minute, measure guide's hydraulic cylinder rodless cavity oil outlet leakage rate and main hydraulic cylinder oil back chamber oil outlet leakage rate；
Step 4: main hydraulic cylinder pressure test；
A, main hydraulic cylinder backhaul chamber voltage-withstand test is fully retracted into main hydraulic cylinder piston rod by step 1 B, the second reversal valve electromagnetism
Iron a electrification, close prefill valve, adjustings the first overflow valve to the first hydraulic pressure pump group outlet pressure be 10.5Mpa, pressure maintaining 10 minutes；
B, main hydraulic cylinder oil back chamber voltage-withstand test is fully retracted into main hydraulic cylinder piston rod by step 1 B, the second reversal valve electromagnetism
Iron a electrification, closes prefill valve；
Adjusting the first overflow valve makes the first hydraulic pressure pump group outlet pressure be reduced to zero, and the power-off of the first reversal valve electromagnet, second commutates
Valve power-off, closes the second shut-off valve, opens the first shut-off valve, and the first reversal valve electromagnet b electrification adjusts the first overflow valve to the
One hydraulic pressure pump group outlet pressure be 1.5Mpa, pressure maintaining 10 minutes；
C, main hydraulic cylinder high pressure chest voltage-withstand test makes the stretching of main hydraulic cylinder piston rod rest on 110mm stroke, adopts by step 1 A
Piston rod is withstood with kiloton hydraulic press, the first overflow valve is adjusted, makes main hydraulic cylinder high pressure cavity pressure 14.5Mpa, pressure maintaining 10 divides
Clock.
3. the test method of radial forging machine main hydraulic cylinder according to claim 2, it is characterised in that: master is hydraulic in step 1
Cylinder motion test, is repeated in A and step B, makes the reciprocating motion of main hydraulic cylinder piston rod total travel 5 times or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566952.3A CN109253129B (en) | 2017-07-12 | 2017-07-12 | System and method for testing main hydraulic cylinder of radial forging machine |
Applications Claiming Priority (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608215A (en) * | 2019-09-03 | 2019-12-24 | 江苏恒立液压科技有限公司 | Hydraulic system for hydraulic cylinder performance test and test method |
| CN111958761A (en) * | 2020-08-28 | 2020-11-20 | 太原理工大学 | Press-filtering forming equipment and press-filtering forming method for refractory material blank |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1031672A (en) * | 1961-05-18 | 1966-06-02 | Woodhouse & Rixson Ltd | Improvements in or relating to machines for forging metal rings |
| DE2517039A1 (en) * | 1975-04-17 | 1976-10-28 | Vni Instrumentalnij I Ssr | Die system for radial die forging - has retractable lower centre punch support for downwards removal of forgings |
| DE2648926A1 (en) * | 1976-10-28 | 1978-05-11 | Hans Dipl Ing Beche | Backlash hammer producing drop forged pieces at single stroke - has one face of piston subjected to spring force and other face coupled to pressure medium lead |
| EP0017660A1 (en) * | 1979-04-17 | 1980-10-29 | Jorma Lillbacka | Hydraulic press |
| SU440039A2 (en) * | 1972-02-21 | 1982-04-23 | Экспериментальный научно-исследовательский институт кузнечно-прессового машиностроения | Pulsator for hydraulic press |
| CN1089193A (en) * | 1992-12-26 | 1994-07-13 | 吉田桂一郎 | Processing method on die forging machine and device |
| JPH0824982A (en) * | 1994-07-12 | 1996-01-30 | Taneishiya:Kk | Production of al alloy forged product and forging press apparatus thereof |
| US6401516B1 (en) * | 1997-10-15 | 2002-06-11 | Sms Eumuco Gmbh | Hydraulic drive system for forging press or forging machine slides |
| CN2892320Y (en) * | 2006-03-14 | 2007-04-25 | 夏德仕 | Hydraulic electric liquid hammer |
| CN100591435C (en) * | 2004-01-15 | 2010-02-24 | Sms欧姆科股份有限公司 | Method for adjusting the position of a mandrel of an extrusion press for producing hollow sections |
| CN202741653U (en) * | 2012-08-01 | 2013-02-20 | 南通华东油压科技有限公司 | Multi-station die forging hydraulic pressure machine |
| CN203130649U (en) * | 2013-03-18 | 2013-08-14 | 中国铁建重工集团有限公司 | Control valve block equipment for testing hydraulic cylinders |
| CN103459134A (en) * | 2011-02-02 | 2013-12-18 | 朗根施泰因及舍曼有限公司 | Press and method for pressing workpieces |
| CN103591075A (en) * | 2013-11-29 | 2014-02-19 | 徐州重型机械有限公司 | Hydraulic control system synchronous with crane and balancing weight hydraulic cylinder and flow control valve |
| CN103615549A (en) * | 2013-12-17 | 2014-03-05 | 北京航天益森风洞工程技术有限公司 | Large-caliber high-pressure pressure regulating valve for pneumatic test device |
| CN106640792A (en) * | 2016-12-26 | 2017-05-10 | 中国船舶重工集团公司第七〇九研究所 | Direct-drive type electro-hydraulic servo system for asymmetric servo cylinder press |
| US20170312810A1 (en) * | 2014-11-03 | 2017-11-02 | Japan Aeroforge, Ltd. | Hydraulic forging press and method for controlling same |
-
2017
- 2017-07-12 CN CN201710566952.3A patent/CN109253129B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1031672A (en) * | 1961-05-18 | 1966-06-02 | Woodhouse & Rixson Ltd | Improvements in or relating to machines for forging metal rings |
| SU440039A2 (en) * | 1972-02-21 | 1982-04-23 | Экспериментальный научно-исследовательский институт кузнечно-прессового машиностроения | Pulsator for hydraulic press |
| DE2517039A1 (en) * | 1975-04-17 | 1976-10-28 | Vni Instrumentalnij I Ssr | Die system for radial die forging - has retractable lower centre punch support for downwards removal of forgings |
| DE2648926A1 (en) * | 1976-10-28 | 1978-05-11 | Hans Dipl Ing Beche | Backlash hammer producing drop forged pieces at single stroke - has one face of piston subjected to spring force and other face coupled to pressure medium lead |
| EP0017660A1 (en) * | 1979-04-17 | 1980-10-29 | Jorma Lillbacka | Hydraulic press |
| CN1089193A (en) * | 1992-12-26 | 1994-07-13 | 吉田桂一郎 | Processing method on die forging machine and device |
| JPH0824982A (en) * | 1994-07-12 | 1996-01-30 | Taneishiya:Kk | Production of al alloy forged product and forging press apparatus thereof |
| US6401516B1 (en) * | 1997-10-15 | 2002-06-11 | Sms Eumuco Gmbh | Hydraulic drive system for forging press or forging machine slides |
| CN100591435C (en) * | 2004-01-15 | 2010-02-24 | Sms欧姆科股份有限公司 | Method for adjusting the position of a mandrel of an extrusion press for producing hollow sections |
| CN2892320Y (en) * | 2006-03-14 | 2007-04-25 | 夏德仕 | Hydraulic electric liquid hammer |
| CN103459134A (en) * | 2011-02-02 | 2013-12-18 | 朗根施泰因及舍曼有限公司 | Press and method for pressing workpieces |
| CN202741653U (en) * | 2012-08-01 | 2013-02-20 | 南通华东油压科技有限公司 | Multi-station die forging hydraulic pressure machine |
| CN203130649U (en) * | 2013-03-18 | 2013-08-14 | 中国铁建重工集团有限公司 | Control valve block equipment for testing hydraulic cylinders |
| CN103591075A (en) * | 2013-11-29 | 2014-02-19 | 徐州重型机械有限公司 | Hydraulic control system synchronous with crane and balancing weight hydraulic cylinder and flow control valve |
| CN103615549A (en) * | 2013-12-17 | 2014-03-05 | 北京航天益森风洞工程技术有限公司 | Large-caliber high-pressure pressure regulating valve for pneumatic test device |
| US20170312810A1 (en) * | 2014-11-03 | 2017-11-02 | Japan Aeroforge, Ltd. | Hydraulic forging press and method for controlling same |
| CN106640792A (en) * | 2016-12-26 | 2017-05-10 | 中国船舶重工集团公司第七〇九研究所 | Direct-drive type electro-hydraulic servo system for asymmetric servo cylinder press |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608215A (en) * | 2019-09-03 | 2019-12-24 | 江苏恒立液压科技有限公司 | Hydraulic system for hydraulic cylinder performance test and test method |
| CN111958761A (en) * | 2020-08-28 | 2020-11-20 | 太原理工大学 | Press-filtering forming equipment and press-filtering forming method for refractory material blank |
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|---|---|
| CN109253129B (en) | 2022-03-08 |
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