CN107775342B - Hydraulic system and hydraulic control method for steel rail flash welding and induction heat treatment integrated machine - Google Patents
Hydraulic system and hydraulic control method for steel rail flash welding and induction heat treatment integrated machine Download PDFInfo
- Publication number
- CN107775342B CN107775342B CN201711170274.5A CN201711170274A CN107775342B CN 107775342 B CN107775342 B CN 107775342B CN 201711170274 A CN201711170274 A CN 201711170274A CN 107775342 B CN107775342 B CN 107775342B
- Authority
- CN
- China
- Prior art keywords
- oil
- cylinder
- hydraulic
- way
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 63
- 238000010438 heat treatment Methods 0.000 title claims abstract description 61
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 46
- 239000010959 steel Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000006698 induction Effects 0.000 title claims abstract description 13
- 239000003921 oil Substances 0.000 claims abstract description 784
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 121
- 230000003068 static effect Effects 0.000 claims description 40
- 210000000245 forearm Anatomy 0.000 claims description 33
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 description 5
- 238000004904 shortening Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a hydraulic system and a hydraulic control method for a steel rail flash welding and induction heat treatment integrated machine, wherein the hydraulic system comprises: a hydraulic pump station; the welding hydraulic system is connected with the hydraulic pump station through a main oil inlet oil way and a main oil return oil way to obtain hydraulic oil from the hydraulic pump station; and the heat treatment hydraulic system is connected with the hydraulic pump station through a main oil inlet oil way and a main oil return oil way to obtain hydraulic oil from the hydraulic pump station. The hydraulic system for the steel rail flash welding and induction heat treatment integrated machine provided by the invention adopts the same hydraulic pump station to supply oil for the action functions of upsetting, pushing and heat treatment of the steel rail, rotation of a crane and the like through a plurality of structures such as the three-position four-way reversing valve, the one-way valve, the two-way throttle valve, the hydraulic lock and the like, so that the configuration is simplified and the cost is reduced.
Description
Technical Field
The invention relates to a hydraulic control device, a hydraulic system and a hydraulic control method for a steel rail flash welding and rigid heat treatment integrated machine.
Background
At present, a large-scale seamless line is paved in China, and a large number of corresponding suspension type steel rail flash welding machines and heat treatment operating vehicles are matched for carrying out steel rail flash welding and induction heat treatment on the line.
In the prior art, the welding machine hydraulic system is used for realizing actions such as clamping, loosening, advancing, retreating, pressure maintaining, tumor pushing, retracting and pushing a convex cutter, the heat treatment operation vehicle hydraulic system is used for realizing actions such as clamping, loosening, pressure maintaining, coil lifting, coil opening and closing, coil left and right adjustment, coil longitudinal front and back alignment, the crane hydraulic system is used for realizing actions such as rotation, large arm stretching and shortening, small arm stretching and shortening, leveling, and the like, and simultaneously three hydraulic systems simultaneously need to have multiple repeated functions such as various protection, filtration, pressure control, flow control, heating, cooling, emergency, and the like. The hydraulic pump station 19 for the rail welding machine provided by the Chinese patent application No. 201010505984.0 provides hydraulic sources for a crane hydraulic subsystem and a landing leg hydraulic subsystem, the hydraulic pump station 19 for the rail welding machine provided by the Chinese patent application No. 201020561230.2 adopts a vertical structure and realizes sharing through parallel connection of pumps, and the above-mentioned patents are only the technical scheme of the hydraulic pump station 19.
Under the prior art, the welding machine hydraulic system is used for realizing actions such as clamping, loosening, advancing, retreating, pressure maintaining, tumor pushing, retracting and pushing a convex cutter, the heat treatment operation vehicle hydraulic system is used for realizing actions such as clamping, loosening, pressure maintaining, coil lifting, coil opening and closing, coil left and right adjustment, coil longitudinal front and back alignment and the like, the crane hydraulic system is used for realizing actions such as rotation, large arm stretching and shortening, small arm stretching and shortening, leveling and the like, and simultaneously three hydraulic systems simultaneously need to have multiple repeated functions such as various protection, filtration, pressure control, flow control, heating, cooling, emergency and the like. The prior art solutions therefore have the following drawbacks:
1, three functions of welding, heat treatment and lifting are needed to adopt three pump stations for oil supply, equipment is repeatedly configured, the occupied space is serious, and the cost is high;
2, the welding and heat treatment are not integrated into a machine, so that the actions of clamping, loosening, pressure maintaining and the like are repeatedly performed, and the operation efficiency is low;
and 3, the multi-system control is easy to cause high failure rate and inconvenient maintenance.
Disclosure of Invention
In order to solve the technical problem, one aspect of the present invention provides a hydraulic system for a rail flash welding and induction heat treatment integrated machine, the hydraulic system comprising:
A hydraulic pump station;
the welding hydraulic system is connected with the hydraulic pump station through a main oil inlet oil way and a main oil return oil way to obtain hydraulic oil from the hydraulic pump station; and
and the heat treatment hydraulic system is connected with the hydraulic pump station through a main oil inlet oil way and a main oil return oil way to obtain hydraulic oil from the hydraulic pump station.
In one embodiment, a hydraulic pump station includes:
the oil tank is connected with the welding hydraulic system and the heat treatment hydraulic system through a main oil inlet oil way and a main oil return oil way respectively;
the main oil pump is arranged on the main oil inlet oil path and is connected with the main motor to pump hydraulic oil from the oil tank under the drive of the main motor; and
a first ball valve arranged on the main oil inlet oil path and positioned between the main oil pump and the welding hydraulic system and the heat treatment hydraulic system,
preferably, a one-way valve is also arranged on the main oil inlet oil path between the first ball valve and the main oil pump,
preferably, the hydraulic pump station further comprises an overflow oil path, one end of the overflow oil path is connected to the main oil inlet path between the main oil pump and the first ball valve, the other end of the overflow oil path is connected to the oil tank, and the overflow oil path is provided with an overflow valve,
Preferably, the hydraulic pump station further comprises a cooler, which is arranged on the main return oil circuit,
preferably, the hydraulic pump station further comprises an oil return filter which is arranged on the main oil return oil path,
preferably, the hydraulic pump station further comprises a heater, and the heater is arranged in the oil tank.
In one embodiment, the hydraulic pump station further comprises an emergency oil circuit, wherein:
an emergency pump and an emergency motor connected with the emergency pump are arranged on the emergency oil path;
one end of the emergency oil way extends into the oil tank, and the other end of the emergency oil way is connected to a main oil inlet oil way between the main oil pump and the first ball valve through an oil pipe; and
the emergency oil way is connected with the main oil return oil way through an oil pipe, a second ball valve is arranged on the oil pipe for connecting the emergency oil way and the main oil return oil way,
preferably, the emergency oil way is also provided with an oil inlet filter, the oil inlet filter is arranged between the emergency pump and the other end of the emergency oil way,
preferably, a check valve is provided on an oil pipe for connecting the emergency oil path and the main oil feed oil path.
In one embodiment, the welding hydraulic system comprises a steel rail clamping cylinder, a upsetting cylinder and a pushing cylinder, and the steel rail clamping cylinder, the upsetting cylinder and the pushing cylinder are connected with a main oil inlet oil way and a main oil return oil way.
In one embodiment:
the rail clamping oil cylinder comprises a movable frame clamping oil cylinder and a static frame clamping oil cylinder, the movable frame clamping oil cylinder is connected with a main oil inlet oil way and a main oil return oil way through a first three-position four-way reversing valve to realize clamping and loosening actions of the movable frame on the rail, and the static frame clamping oil cylinder is connected with the main oil inlet oil way and the main oil return oil way through a second three-position four-way reversing valve to realize clamping and loosening actions of the static frame on the rail;
the upsetting oil cylinder comprises a front upsetting oil cylinder and a rear upsetting oil cylinder, the front upsetting oil cylinder and the rear upsetting oil cylinder are connected with a main oil inlet oil way and a main oil return oil way through a third three-position four-way reversing valve to realize the relative separation and approaching action of the movable frame and the static frame, and the front upsetting oil cylinder and the rear upsetting oil cylinder are connected with the main oil inlet oil way and the main oil return oil way through electrohydraulic servo valves to control the relative separation and approaching speed of the movable frame and the static frame; and
the push convex cylinder comprises a forward push convex cylinder, a backward push convex cylinder and a first hydraulic motor, the forward push convex cylinder and the backward push convex cylinder are connected with a main oil inlet oil way and a main oil return oil way through a fourth three-position four-way reversing valve to realize forward push and recovery actions of a cylinder rod of the push convex cylinder, the first hydraulic motor is arranged on an oil inlet oil way between the fourth three-position four-way reversing valve and the forward push convex cylinder and the backward push convex cylinder,
Preferably:
the main oil inlet path and the main oil return path are provided with one-way valves at positions close to the first three-position four-way reversing valve;
a one-way valve is arranged at the positions, close to the second three-position four-way reversing valve, on the main oil inlet oil way and the main oil return oil way;
a hydraulic lock is arranged at the positions, close to the third three-position four-way reversing valve, on the main oil inlet oil way and the main oil return oil way; and
and one-way valves are arranged at the positions, close to the fourth three-position four-way reversing valve, on the main oil inlet oil path and the main oil return oil path.
In one embodiment, the heat treatment hydraulic system includes a coil clamping cylinder and a coil lifting cylinder, and the coil clamping cylinder and the coil lifting cylinder are both connected with a main oil feed circuit and a main oil return circuit.
In one embodiment:
the coil clamping oil cylinder comprises a front clamping oil cylinder, a rear clamping oil cylinder and a second hydraulic motor, wherein the front clamping oil cylinder and the rear clamping oil cylinder are connected with a main oil inlet oil way and a main oil return oil way through a fifth three-position four-way reversing valve so as to realize clamping and opening actions of the coil on a steel rail, and the second hydraulic motor is arranged on an oil inlet oil way between the fifth three-position four-way reversing valve and the front clamping oil cylinder and the rear clamping oil cylinder; and
the coil lifting oil cylinder comprises a front lifting oil cylinder and a rear lifting oil cylinder, the front lifting oil cylinder and the rear lifting oil cylinder are connected with a main oil inlet oil way and a main oil return oil way through a sixth three-position four-way reversing valve to realize the lifting and descending actions of the coil on the steel rail,
Preferably:
a two-way throttle valve is arranged on an oil inlet path and an oil return path between the fifth three-position four-way reversing valve and the front clamping cylinder and the rear clamping cylinder; and
and a hydraulic lock and a bidirectional throttle valve are sequentially arranged on an oil inlet oil way and an oil return oil way between the sixth three-position four-way reversing valve and the front lifting oil cylinder and the rear lifting oil cylinder.
In one embodiment, the hydraulic system further comprises a lifting hydraulic system comprising a boom cylinder, a forearm cylinder and a rotary hydraulic motor, and the boom cylinder, the forearm cylinder and the rotary hydraulic motor are connected with the main oil inlet circuit and the main oil return circuit, respectively.
In one embodiment:
the big arm oil cylinder comprises a front big arm oil cylinder and a rear big arm oil cylinder, the front big arm oil cylinder and the rear big arm oil cylinder are connected with a main oil inlet oil way and a main oil return oil way through a seventh three-position four-way reversing valve and a two-way throttle valve, a hydraulic lock is arranged between the oil inlet oil way and the oil return oil way between the front big arm oil cylinder and the seventh three-position four-way reversing valve, and a hydraulic lock is arranged between the oil inlet oil way and the oil return oil way between the rear big arm oil cylinder and the seventh three-position four-way reversing valve;
the small arm oil cylinder comprises a front small arm oil cylinder and a rear small arm oil cylinder, the front small arm oil cylinder and the rear small arm oil cylinder are connected with a main oil inlet oil way and a main oil return oil way through an eighth three-position four-way reversing valve and a two-way throttle valve, a hydraulic lock is arranged between the oil inlet oil way and the oil return oil way between the front small arm oil cylinder and the eighth three-position four-way reversing valve, and a hydraulic lock is arranged between the oil inlet oil way and the oil return oil way between the rear small arm oil cylinder and the eighth three-position four-way reversing valve; and
The rotary hydraulic motor is connected with the main oil inlet oil way and the main oil return oil way through a ninth three-position four-way reversing valve, and preferably, a two-way throttle valve is arranged on the main oil inlet oil way and the main oil return oil way between the ninth three-position four-way reversing valve and the rotary hydraulic motor.
According to another aspect of the present invention, there is provided a hydraulic control method using the hydraulic system for a rail flash welding and induction heat treatment integrated machine as described above, the hydraulic control method comprising the steps of:
the hydraulic pump station provides hydraulic oil for the welding hydraulic system through the main oil inlet oil way so as to weld the steel rail;
hydraulic oil discharged by the welding hydraulic system returns to the hydraulic pump station through a main oil return oil way;
the hydraulic pump station provides hydraulic oil for the heat treatment hydraulic system through the main oil inlet oil way so as to heat treat the welding seam; and
and hydraulic oil discharged by the heat treatment hydraulic system returns to the hydraulic pump station through the main oil return oil way.
In one embodiment, the hydraulic pump station includes a tank, a main oil pump, a main motor, a first ball valve, and the step of providing hydraulic oil to the welding hydraulic system and the heat treatment hydraulic system further includes the steps of:
starting a main motor and a main oil pump;
the main oil pump pumps hydraulic oil from the oil tank into a main oil inlet oil path; and
Hydraulic oil respectively enters a welding hydraulic system and a heat treatment hydraulic system through a first ball valve,
preferably, a one-way valve is also arranged on the main oil inlet oil path between the first ball valve and the main oil pump,
preferably, the hydraulic pump station further comprises an overflow oil path, an overflow valve is arranged on the overflow oil path, the overflow valve is used for adjusting the pressure of the main oil inlet oil path,
preferably, the hydraulic pump station further comprises a cooler, which is arranged on the main return oil circuit,
preferably, the hydraulic pump station further comprises an oil return filter which is arranged on the main oil return oil path,
preferably, the hydraulic pump station further comprises a heater, and the heater is arranged in the oil tank.
In an embodiment, the hydraulic pump station still includes emergent oil circuit, is provided with emergency pump, emergency motor on the emergent oil circuit, and emergent oil circuit is connected with main oil return oil circuit through oil pipe to be used for connecting and be provided with the second ball valve on the oil pipe of emergent oil circuit and main oil return oil circuit, wherein:
when the second ball valve is closed, hydraulic oil obtained from the oil tank through the emergency motor and the emergency pump enters a main oil inlet oil path; and
when the second ball valve is opened, the hydraulic oil obtained from the oil tank through the emergency motor and the emergency pump enters the main oil return oil way,
Preferably, the emergency oil way is also provided with an oil inlet filter, the oil inlet filter is arranged between the emergency pump and the other end of the emergency oil way,
preferably, a check valve is provided on an oil pipe for connecting the emergency oil path and the main oil feed oil path.
In one embodiment, the welding hydraulic system comprises a rail clamping cylinder, an upsetting cylinder and a push-up cylinder, the rail clamping cylinder comprises a movable frame clamping cylinder and a static frame clamping cylinder, the upsetting cylinder comprises a front upsetting cylinder and a rear upsetting cylinder, the push-up cylinder comprises a front push-up cylinder, a rear push-up cylinder and a first hydraulic motor, wherein:
the hydraulic control method of the steel rail clamping oil cylinder comprises the following steps:
hydraulic oil enters a rodless cavity of the movable frame clamping cylinder through a first loop of the first three-position four-way reversing valve so as to enable the movable frame to clamp a steel rail;
hydraulic oil enters a rodless cavity of the static frame clamping oil cylinder through a first loop of the second three-position four-way reversing valve so that the static frame clamps the steel rail;
hydraulic oil enters a rod cavity of the movable frame clamping oil cylinder through a second loop of the first three-position four-way reversing valve so as to enable the movable frame to loosen a steel rail; and
hydraulic oil enters a rodless cavity of the static frame clamping oil cylinder through a second loop of the second three-position four-way reversing valve so as to enable the static frame to loosen the steel rail,
The hydraulic control method of the upsetting oil cylinder comprises the following steps:
hydraulic oil enters rodless cavities of the front upsetting oil cylinder and the rear upsetting oil cylinder through a first loop of the third three-position four-way reversing valve so as to relatively separate the movable frame from the static frame;
hydraulic oil enters rod cavities of the front upsetting oil cylinder and the rear upsetting oil cylinder through a second loop of the third three-position four-way reversing valve so as to enable the movable frame and the static frame to be relatively close;
hydraulic oil enters rod cavities of the front upsetting oil cylinder and the rear upsetting oil cylinder through a first loop of the electrohydraulic servo valve so that the movable frame and the static frame are relatively separated according to the speed specified by the electrohydraulic servo valve;
hydraulic oil enters five rod cavities of the front upsetting oil cylinder and the rear upsetting oil cylinder through a second loop of the electrohydraulic servo valve so that the movable frame and the static frame are relatively close according to the speed regulated by the electrohydraulic servo valve,
the hydraulic control method of the push-convex oil cylinder comprises the following steps:
the hydraulic oil passes through a first loop of a fourth three-position four-way reversing valve;
hydraulic oil enters rodless cavities of the forward pushing convex cylinder and the backward pushing convex cylinder through the first hydraulic motor so as to synchronously push the forward pushing convex cylinder and the backward pushing convex cylinder forward;
hydraulic oil passes through a second loop of the fourth three-position four-way reversing valve; and
hydraulic oil enters rod cavities of the front pushing convex cylinder and the rear pushing convex cylinder through the first hydraulic motor so as to synchronously recover the front pushing convex cylinder and the rear pushing convex cylinder,
Preferably:
the main oil inlet path and the main oil return path are provided with one-way valves at positions close to the first three-position four-way reversing valve;
a one-way valve is arranged at the positions, close to the second three-position four-way reversing valve, on the main oil inlet oil way and the main oil return oil way;
a hydraulic lock is arranged at the positions, close to the third three-position four-way reversing valve, on the main oil inlet oil way and the main oil return oil way; and
and one-way valves are arranged at the positions, close to the fourth three-position four-way reversing valve, on the main oil inlet oil path and the main oil return oil path.
In one embodiment, the heat treatment hydraulic system comprises a coil clamping cylinder and a coil lifting cylinder, the coil clamping cylinder comprising a front clamping cylinder, a rear clamping cylinder, and a second hydraulic motor, the coil lifting cylinder comprising a front lifting cylinder and a rear lifting cylinder, wherein:
the hydraulic control method of the coil clamping cylinder comprises the following steps:
hydraulic oil enters the second hydraulic motor through a first loop of the fifth three-position four-way reversing valve to enter oil into rodless cavities of the front clamping oil cylinder and the rear clamping oil cylinder, so that coil clamping is realized; and
hydraulic oil enters a second hydraulic motor through a second loop of the fifth three-position four-way reversing valve to enter oil into rod cavities of the front clamping oil cylinder and the rear clamping oil cylinder, so that the coil is opened;
The hydraulic control method of the coil lifting oil cylinder comprises the following steps:
hydraulic oil passes through a first loop of the sixth three-position four-way reversing valve and enters rodless cavities of the front lifting oil cylinder and the rear lifting oil cylinder, so that the coil is lifted; and
hydraulic oil passes through a second loop of the sixth three-position four-way reversing valve and enters rod cavities of the front lifting oil cylinder and the rear lifting oil cylinder, so that coil descending is realized;
preferably:
a two-way throttle valve is arranged on an oil inlet path and an oil return path between the fifth three-position four-way reversing valve and the front clamping cylinder and the rear clamping cylinder; and
and a hydraulic lock and a bidirectional throttle valve are sequentially arranged on an oil inlet oil way and an oil return oil way between the sixth three-position four-way reversing valve and the front lifting oil cylinder and the rear lifting oil cylinder.
In one embodiment, the hydraulic system further comprises a hoist hydraulic system comprising a boom cylinder, a forearm cylinder, and a rotary hydraulic motor, the boom cylinder comprising a front boom cylinder and a rear boom cylinder, the forearm cylinder comprising a front forearm cylinder and a rear forearm cylinder, wherein:
the hydraulic control method of the large arm oil cylinder comprises the following steps:
hydraulic oil sequentially enters a first loop of a seventh three-position four-way reversing valve, a two-way throttle valve and a hydraulic lock and then enters rodless cavities of a front big arm oil cylinder and a rear big arm oil cylinder, so that the big arm is led out; and
Hydraulic oil sequentially enters a first loop of a seventh three-position four-way reversing valve, a two-way throttle valve and a hydraulic lock and then enters rod cavities of a front big arm oil cylinder and a rear big arm oil cylinder, so that the big arm retreats;
the hydraulic control method of the small arm cylinder comprises the following steps:
hydraulic oil sequentially enters a first loop of the eighth three-position four-way reversing valve, a two-way throttle valve and a hydraulic lock and then enters rodless cavities of a front forearm oil cylinder and a rear forearm oil cylinder, so that the forearm is led out; and
hydraulic oil sequentially enters a second loop of the eighth three-position four-way reversing valve, a two-way throttle valve and a hydraulic lock and then enters rod cavities of a front small arm oil cylinder and a rear small arm oil cylinder, so that the small arm retreats,
the hydraulic control method of the rotary hydraulic motor includes the steps of:
hydraulic oil enters a first loop and a two-way throttle valve of a ninth three-position four-way reversing valve and enters a rotary hydraulic motor, so that the rotary hydraulic motor rotates clockwise, and the crane rotates clockwise; and
hydraulic oil enters a second loop of the ninth three-position four-way reversing valve and the two-way throttle valve and enters the rotary hydraulic motor, so that the rotary hydraulic motor rotates anticlockwise, and the anticlockwise rotation of the crane is completed.
The hydraulic system and the hydraulic control method for the steel rail flash welding and induction heat treatment integrated machine provided by the invention adopt the same hydraulic pump station for oil supply to the action functions of upsetting, pushing, heat treatment, rotation of a crane and the like of the steel rail through the structures of the three-position four-way reversing valve, the one-way valve, the two-way throttle valve, the hydraulic lock and the like, and the welding hydraulic system, the heat treatment hydraulic system and the lifting hydraulic system share one set of structures of protection, filtration, pressure control, flow control, heating, cooling, emergency and the like, so that the configuration is simplified, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural view of a hydraulic system for a rail flash welding and induction heat treatment integrated machine according to an exemplary embodiment of the present invention.
Detailed Description
Illustrative, non-limiting embodiments of the present invention are described in detail below with reference to the accompanying drawings, which further illustrate a hydraulic system and hydraulic control method for a rail flash welding and induction heat treatment integrated machine in accordance with the present invention.
Referring to fig. 1, the hydraulic system for the steel rail flash welding and induction heat treatment integrated machine disclosed by the invention comprises a hydraulic pump station 19, a welding hydraulic system and a heat treatment hydraulic system.
The welding hydraulic system and the heat treatment hydraulic system are connected with the hydraulic pump station 19 through a main oil inlet oil way and a main oil return oil way. Hydraulic oil in the hydraulic pump station 19 enters the welding hydraulic system and the heat treatment hydraulic system through the main oil inlet oil way, so that hydraulic control of welding operation and heat treatment operation is realized; the hydraulic oil discharged from the welding hydraulic system and the heat treatment hydraulic system is returned to the hydraulic pump station 19 through the main return oil passage. From the above description, the welding and heat treatment operation in the invention adopts the same hydraulic pump station 19 for oil supply, so that the configuration can be simplified and the cost can be reduced.
Referring to fig. 1, in one embodiment of the invention, the hydraulic pump station 19 comprises a tank 19.1, a main oil pump 19.3, a main motor 19.2 and a first ball valve 19.12.
The oil tank 19.1 is connected with a welding hydraulic system and a heat treatment hydraulic system respectively through a main oil inlet oil way and a main oil return oil way. The main motor 19.2 is connected to the main oil pump 19.3 to power the main oil pump 19.3. The main oil pump 19.3 is arranged on the main oil feed path for pumping the hydraulic oil in the oil tank 19.1 into the main oil feed path. The first ball valve 19.12 is arranged on the main oil inlet path and is positioned between the main oil pump 19.3 and the welding hydraulic system and the heat treatment hydraulic system, and is used for controlling the opening and closing of the main oil inlet path. In this way, the oil supply to the welding hydraulic system and the heat treatment hydraulic system is achieved by the main oil pump 19.3, the main motor 19.2 and the first ball valve 19.12. In one embodiment, a heater 19.14 is provided in the tank 19.1, the heater 19.14 being arranged to heat the hydraulic oil to keep the hydraulic oil at a suitable temperature.
In one embodiment, a check valve 19.4 is provided on the main oil feed oil path between the first ball valve 19.12 and the main oil pump 19.3 to prevent reverse pressure shock of the hydraulic oil. In order to regulate the pressure of the hydraulic oil in the main oil intake passage, the hydraulic pump station 19 further includes an overflow passage. One end of the relief oil passage is connected to a main oil feed passage between the main oil pump 19.3 and the first ball valve 19.12, the other end is connected to the oil tank 19.1, and the relief oil passage is provided with a relief valve 19.9 to adjust the pressure of hydraulic oil in the main oil feed passage.
In one embodiment, the hydraulic pump station 19 further comprises a cooler 19.10. Since the temperature of the hydraulic oil increases after passing through the welding hydraulic system and the heat treatment hydraulic system, a cooler 19.10 is provided on the main return oil line to cool the hydraulic oil discharged from the welding hydraulic system and the heat treatment hydraulic system. The main return oil path is also provided with a return filter 19.11 for filtering the hydraulic oil recovered from the main return oil path.
In one embodiment, the hydraulic pump station 19 further includes an emergency oil circuit. One end of the emergency oil way extends into the oil tank 19.1, the other end of the emergency oil way is connected to a main oil inlet oil way between the main oil pump 19.3 and the first ball valve 19.12 through an oil pipe, and an emergency pump 19.7 and an emergency motor 19.6 connected with the emergency pump 19.7 are arranged on the emergency oil way; meanwhile, the emergency oil way is connected with the main oil return oil way through an oil pipe, and a second ball valve 19.13 is arranged on the oil pipe for connecting the emergency oil way and the main oil return oil way. In this way, the emergency motor 19.6 drives the emergency pump 19.7 to absorb hydraulic oil from the oil tank 19.1 and discharge hydraulic oil, when the second ball valve 19.13 is closed, the discharged hydraulic oil can be used as emergency hydraulic power, and when the second ball valve 19.13 is opened, the discharged hydraulic oil can be discharged into the oil tank 19.1 through the second ball valve 19.13, the cooler 19.10 and the oil return filter 19.11. In one embodiment, the emergency oil path is further provided with an oil inlet filter 19.5, and the oil inlet filter 19.5 is arranged between the emergency pump 19.7 and the other end of the emergency oil path and is used for filtering hydraulic oil sucked by the emergency pump 19.7. In addition, a check valve 19.8 is provided on the oil pipe for connecting the emergency oil passage and the main oil feed oil passage, so as to prevent the hydraulic oil sucked from the main oil pump 19.3 from being decompressed to the emergency oil passage and the main oil return oil passage.
In one embodiment of the invention, the welding hydraulic system comprises a steel rail clamping cylinder 1, a upsetting cylinder 5 and a pushing cylinder 2, and the steel rail clamping cylinder 1, the upsetting cylinder 5 and the pushing cylinder 2 are connected with a main oil inlet oil way and a main oil return oil way. The steel rail clamping oil cylinder 1, the upsetting oil cylinder 5 and the pushing oil cylinder 2 respectively acquire hydraulic oil from the hydraulic pump station 19 through a main oil inlet oil way and finish driving a steel rail welding device to finish steel rail clamping, upsetting and welding seam pushing operations, and the hydraulic oil discharged by each oil cylinder is returned to the oil tank 19.1 through a main oil return oil way.
In one embodiment, the rail clamping cylinder 1 comprises a movable frame clamping cylinder 1.1 and a static frame clamping cylinder 1.2, wherein the movable frame clamping cylinder 1.1 is connected with a main oil inlet oil way and a main oil return oil way through a first valve group 9 (a first three-position four-way reversing valve 9.1), and the static frame clamping cylinder 1.2 is connected with the main oil inlet oil way and the main oil return oil way through a second valve group 10 (a second three-position four-way reversing valve 10.1). Thus, the hydraulic oil pumped out of the hydraulic pump station 19 enters the rodless cavity of the movable frame clamping cylinder 1.1 through the first loop of the first three-position four-way reversing valve 9.1 to realize the movable frame clamping of the steel rail, and the hydraulic oil pumped out of the hydraulic pump station 19 enters the rodless cavity of the static frame clamping cylinder 1.2 through the first loop of the second three-position four-way reversing valve 10.1 to realize the static frame clamping of the steel rail; the first three-position four-way reversing valve 9.1 and the second three-position four-way reversing valve 10.1 are used for reversing, hydraulic oil pumped out from the hydraulic pump station 19 enters a rod cavity of the movable frame clamping cylinder 1.1 through a second loop of the first three-position four-way reversing valve 9.1, so that the movable frame can loosen the steel rail, and hydraulic oil pumped out from the hydraulic pump station 19 enters a rod cavity of the static frame clamping cylinder 1.2 through a second loop of the second three-position four-way reversing valve 10.1, so that the static frame can loosen the steel rail. In this way, the clamping and loosening actions of the movable frame and the static frame on the steel rail can be completed by adjusting the reversing operation of the first three-position four-way reversing valve 9.1 and the second three-position four-way reversing valve 10.1. Preferably, the first valve group 9 further comprises a check valve 9.2 arranged on the main oil inlet path and the main oil return path and close to the first three-position four-way reversing valve 9.1, and the second valve group 10 further comprises a check valve 10.2 arranged on the main oil inlet path and the main oil return path and close to the second three-position four-way reversing valve 10.1, so as to avoid the impact of the reverse pressure of hydraulic oil.
The upsetting cylinder 5 comprises a front upsetting cylinder 5.1 and a rear upsetting cylinder 5.2, wherein the front upsetting cylinder 5.1 and the rear upsetting cylinder 5.2 are connected with a main oil inlet oil path and a main oil return oil path through a third valve group 14 (a third three-position four-way reversing valve 14.1), and the front upsetting cylinder 5.1 and the rear upsetting cylinder 5.2 are connected with the main oil inlet oil path and the main oil return oil path through an electrohydraulic servo valve 15. Thus, the hydraulic oil pumped out of the hydraulic pump station 19 enters the rodless cavities of the front upsetting cylinder 5.1 and the rear upsetting cylinder 5.2 through the first loop of the third three-position four-way reversing valve 14.1 so as to relatively separate the movable frame from the static frame, and the hydraulic oil pumped out of the hydraulic pump station 19 enters the rod cavities of the front upsetting cylinder 5.1 and the rear upsetting cylinder 5.2 through the second loop of the third three-position four-way reversing valve 14.1 so as to relatively close the movable frame and the static frame. In this way, the upsetting operation of the movable frame and the stationary frame can be realized by the reversing operation of the third three-position four-way reversing valve 14.1. In addition, the hydraulic oil pumped out from the hydraulic pump station 19 enters the rod cavities of the front upsetting oil cylinder 5.1 and the rear upsetting oil cylinder 5.2 through the first loop of the electro-hydraulic servo valve 15 so that the movable frame and the static frame are relatively separated according to the speed regulated by the electro-hydraulic servo valve 15; hydraulic oil sequentially passes through the second loop of the electrohydraulic servo valve 15 and enters rodless cavities of the front upsetting oil cylinder 5.1 and the rear upsetting oil cylinder 5.2 so that the movable frame and the static frame are relatively close according to the speed regulated by the electrohydraulic servo valve 15. Therefore, the movable frame and the static frame of the welding machine can be separated according to the speed appointed by the electrohydraulic servo valve 15 through the reversing of the electrohydraulic servo valve 15, and the welding process control is realized. Preferably, the third valve block 14 further comprises a hydraulic lock 14.2 arranged on the main inlet and return oil paths near the third three-position four-way reversing valve 14.1, the hydraulic lock 14.2 being adapted to prevent hydraulic oil kickback.
The push convex cylinder 2 comprises a front push convex cylinder 2.1, a rear push convex cylinder 2.2 and a first hydraulic motor 11.3, wherein the front push convex cylinder 2.1 and the rear push convex cylinder 2.2 are connected with a main oil inlet oil way and a main oil return oil way through a fourth valve group 11 (a fourth three-position four-way reversing valve 11.1), and the first hydraulic motor 11.3 is arranged on the oil inlet oil way between the fourth three-position four-way reversing valve 11.1 and the front push convex cylinder 2.1 and the rear push convex cylinder 2.2. Thus, the hydraulic oil pumped out from the hydraulic pump station 19 enters the first hydraulic motor 11.3 through the first loop of the fourth three-position four-way reversing valve 11.1, and enters rodless cavities of the forward pushing convex cylinder 2.1 and the backward pushing convex cylinder 2.2 through the first hydraulic motor 11.3 so as to synchronously push forward the forward pushing convex cylinder 2.1 and the backward pushing convex cylinder 2.2; the fourth three-position four-way reversing valve 11.1 reverses, hydraulic oil pumped out from the hydraulic pump station 19 enters the first hydraulic motor 11.3 through the second loop of the fourth three-position four-way reversing valve 11.1, and enters rod cavities of the front push convex cylinder 2.1 and the rear push convex cylinder 2.2 through the first hydraulic motor 11.3, so that the front push convex cylinder 2.1 and the rear push convex cylinder 2.2 are synchronously recovered, and the push convex operation of the welding machine on welding seams is realized. Preferably, the fourth valve group 11 further comprises a check valve 11.2 which is arranged on the main oil inlet path and the main oil return path and is close to the fourth three-position four-way reversing valve 11.1, and the check valve 11.2 is used for avoiding hydraulic oil backflushing.
In one embodiment of the invention, the heat treatment hydraulic system comprises a coil clamping cylinder 3 and a coil lifting cylinder 4, and the coil clamping cylinder 3 and the coil lifting cylinder 4 are connected with a main oil inlet oil way and a main oil return oil way. The coil clamping oil cylinder 3 and the coil lifting oil cylinder 4 obtain hydraulic oil from a main oil inlet oil way, drive the heating coil to descend, open and clamp the steel rail weld joint for heat treatment, and open and ascend the coil after the heat treatment is completed, so that the heat treatment operation of the steel rail weld joint is completed.
Further, the coil clamping cylinder 3 comprises a front clamping cylinder 3.1, a rear clamping cylinder 3.2 and a second hydraulic motor 12.3, the front clamping cylinder 3.1 and the rear clamping cylinder 3.2 are connected with a main oil inlet oil path and a main oil return oil path through a fifth valve group 12 (a fifth three-position four-way reversing valve 12.1), and the second hydraulic motor 12.3 is arranged on the oil inlet oil path between the fifth three-position four-way reversing valve 12.1 and the front clamping cylinder 3.1 and the rear clamping cylinder 3.2. Thus, the hydraulic oil pumped out from the hydraulic pump station 19 enters the second hydraulic motor 12.3 through the first loop of the fifth three-position four-way reversing valve 12.1 to feed oil into the rodless cavities of the front clamping cylinder 3.1 and the rear clamping cylinder 3.2, so that coil clamping welding seams are realized, and the hydraulic oil pumped out from the hydraulic pump station 19 enters the second hydraulic motor 12.3 through the second loop of the fifth three-position four-way reversing valve 12.1 to feed oil into the rod cavities of the front clamping cylinder 3.1 and the rear clamping cylinder 3.2, so that coil opening relative to the welding seams is realized. The clamping and opening actions of the coil can be realized through the reversing of the fifth three-position four-way reversing valve 12.1. Preferably, the fifth valve bank 12 further comprises a bidirectional throttle valve 12.2, and the bidirectional throttle valve 12.2 is arranged on an oil inlet path and an oil return path between the fifth three-position four-way reversing valve 12.1 and the front clamping cylinder 3.1 and the rear clamping cylinder 3.2, so as to adjust the flow rate of hydraulic oil.
The coil lifting oil cylinder 4 comprises a front lifting oil cylinder 4.1 and a rear lifting oil cylinder 4.2, and the front lifting oil cylinder 4.1 and the rear lifting oil cylinder 4.2 are connected with a main oil inlet oil way and a main oil return oil way through a sixth valve group 13 (a sixth three-position four-way reversing valve 13.1). Thus, the hydraulic oil pumped out of the hydraulic pump station 19 passes through the first loop of the sixth three-position four-way reversing valve 13.1 and enters the rodless cavities of the front lifting oil cylinder 4.1 and the rear lifting oil cylinder 4.2, so that the coil lifting is realized, and the hydraulic oil pumped out of the hydraulic pump station 19 passes through the second loop of the sixth three-position four-way reversing valve 13.1 and enters the rod cavities of the front lifting oil cylinder 4.1 and the rear lifting oil cylinder 4.2, so that the coil lifting is realized. The coil can be lifted and lowered through the reversing operation of the sixth three-position four-way reversing valve 13.1. Preferably, the sixth valve bank 13 further comprises a hydraulic lock 13.2 and a bidirectional throttle valve 13.3, wherein the hydraulic lock 13.2 and the bidirectional throttle valve 13.3 are sequentially arranged on an oil inlet oil path and an oil return oil path between the sixth three-position four-way reversing valve 13.1 and the front lifting oil cylinder 4.1 and the rear lifting oil cylinder 4.2, so as to adjust the flow rate of hydraulic oil.
In one embodiment of the invention, the hydraulic system further comprises a lifting hydraulic system. The lifting hydraulic system comprises a large arm oil cylinder 6, a small arm oil cylinder 7 and a rotary hydraulic motor 8, and the large arm oil cylinder 6, the small arm oil cylinder 7 and the rotary hydraulic motor 8 are respectively connected with a main oil inlet oil way and a main oil return oil way. The boom cylinder 6, the forearm cylinder 7 and the rotary hydraulic motor 8 can obtain hydraulic oil from the hydraulic pump station 19 through a main oil inlet oil path to drive the boom and the forearm actions of the crane and the rotation actions of the crane, and return the discharged hydraulic oil to the hydraulic pump station 19 through a main oil return oil path.
Further, the boom cylinder 6 includes a front boom cylinder 6.1 and a rear boom cylinder 6.2, the front boom cylinder 6.1 and the rear boom cylinder 6.2 are connected with a main oil inlet path and a main oil return path through a seventh valve bank 16 (a seventh three-position four-way reversing valve 16.1 and a two-way throttle valve 16.2), a hydraulic lock 16.3 is arranged between the oil inlet path and the oil return path between the front boom cylinder 6.1 and the seventh three-position four-way reversing valve 16.1, and a hydraulic lock 16.4 is arranged between the oil inlet path and the oil return path between the rear boom cylinder 6.2 and the seventh three-position four-way reversing valve 16.1. Thus, the hydraulic oil pumped out from the hydraulic pump station 19 sequentially enters the first loop of the seventh three-position four-way reversing valve 16.1, the two-way throttle valve 16.2, the hydraulic lock 16.3 and the hydraulic lock 16.4 and then enters the rodless cavities of the front big arm cylinder 6.1 and the rear big arm cylinder 6.2, so that the big arm is moved forward, and the hydraulic oil pumped out from the hydraulic pump station 19 sequentially enters the first loop of the seventh three-position four-way reversing valve 16.1, the two-way throttle valve 16.2, the hydraulic lock 16.3 and the hydraulic lock 16.4 and then enters the rod cavities of the front big arm cylinder 6.1 and the rear big arm cylinder 6.2, so that the big arm is moved backward. The two-way throttle valve 16.2 is used for adjusting the flow rate of the hydraulic oil, and the hydraulic lock 16.3 and the hydraulic lock 16.4 are used for preventing the hydraulic oil from backflushing.
The forearm cylinder 7 comprises a front forearm cylinder 7.1 and a rear forearm cylinder 7.2, the front forearm cylinder 7.1 and the rear forearm cylinder 7.2 are connected with a main oil inlet oil way and a main oil return oil way through an eighth valve bank 17 (an eighth three-position four-way reversing valve 17.1 and a two-way throttle valve 17.2), a hydraulic lock 17.3 is arranged between the oil inlet oil way and the oil return oil way between the front forearm cylinder 7.1 and the eighth three-position four-way reversing valve 17.1, and a hydraulic lock 17.4 is arranged between the oil inlet oil way and the oil return oil way between the rear forearm cylinder 7.2 and the eighth three-position four-way reversing valve 17.1. Thus, the hydraulic oil pumped out from the hydraulic pump station 19 sequentially enters the first loop of the eighth three-position four-way reversing valve 17.1, the two-way throttle valve 17.2, the hydraulic lock 17.3 and the hydraulic lock 17.4 and then enters the rodless cavities of the front forearm cylinder 7.1 and the rear forearm cylinder 7.2, so that the forearm is moved forward, and the hydraulic oil pumped out from the hydraulic pump station 19 sequentially enters the second loop of the eighth three-position four-way reversing valve 17.1, the two-way throttle valve 17.2, the hydraulic lock 17.3 and the hydraulic lock 17.4 and then enters the rod cavities of the front forearm cylinder 7.1 and the rear forearm cylinder 7.2, so that the forearm is moved backward. The two-way throttle valve 17.2 is used for adjusting the flow rate of the hydraulic oil, and the hydraulic lock 17.3 and the hydraulic lock 17.4 are used for preventing the hydraulic oil from backflushing.
The rotary hydraulic motor 8 is connected with a main oil inlet oil path and a main oil return oil path through a ninth valve block 18 (a ninth three-position four-way reversing valve 18.1 and a two-way throttle valve 18.2). Thus, the hydraulic oil pumped out of the hydraulic pump station 19 enters the first loop of the ninth three-position four-way reversing valve 18.1 and the two-way throttle valve 18.2 and enters the rotary hydraulic motor 8, so that the rotary hydraulic motor 8 rotates clockwise, the crane rotates clockwise, the hydraulic oil pumped out of the hydraulic pump station 19 enters the second loop of the ninth three-position four-way reversing valve 18.1 and the two-way throttle valve 18.2 and enters the rotary hydraulic motor 8, and the rotary hydraulic motor 8 rotates anticlockwise, and the crane rotates anticlockwise.
According to the hydraulic system for the steel rail flash welding and induction heat treatment integrated machine, the upsetting, the push-out, the heat treatment, the rotation and other action functions of the crane and the like of the steel rail are supplied with oil by adopting the same hydraulic pump station through a plurality of structures such as the three-position four-way reversing valve, the one-way valve, the two-way throttle valve, the hydraulic lock and the like, so that the configuration is simplified, and the cost is reduced.
Claims (32)
1. A hydraulic system for a rail flash welding and induction heat treatment integrated machine, comprising:
A hydraulic pump station;
the welding hydraulic system is connected with the hydraulic pump station through a main oil inlet oil way and a main oil return oil way to obtain hydraulic oil from the hydraulic pump station; and
the heat treatment hydraulic system is connected with the hydraulic pump station through the main oil inlet oil way and the main oil return oil way to obtain hydraulic oil from the hydraulic pump station;
the hydraulic pump station includes:
the oil tank is connected with the welding hydraulic system and the heat treatment hydraulic system through the main oil inlet oil way and the main oil return oil way respectively;
the main oil pump is arranged on the main oil inlet oil path and is connected with the main motor to pump hydraulic oil from the oil tank under the driving of the main motor.
2. The hydraulic system of claim 1, wherein the hydraulic pump station further comprises a first ball valve disposed on the main oil feed path between the main oil pump and the welding hydraulic system and the heat treatment hydraulic system, a check valve is further disposed on the main oil feed path between the first ball valve and the main oil pump, the hydraulic pump station further comprises an overflow oil path, one end of the overflow oil path is connected to the main oil feed path between the main oil pump and the first ball valve, the other end is connected to the oil tank, and the overflow oil path is provided with an overflow valve.
3. The hydraulic system of claim 1, wherein the hydraulic pump station further comprises a cooler disposed on the main return oil circuit.
4. The hydraulic system of claim 1, wherein the hydraulic pump station further comprises a scavenge filter disposed on the main scavenge oil path.
5. The hydraulic system of claim 1, wherein the hydraulic pump station further comprises a heater disposed within the oil tank.
6. The hydraulic system of claim 2, wherein the hydraulic pump station further comprises an emergency oil circuit, wherein:
the emergency oil way is provided with an emergency pump and an emergency motor connected with the emergency pump;
one end of the emergency oil way extends into the oil tank, and the other end of the emergency oil way is connected to the main oil inlet oil way between the main oil pump and the first ball valve through an oil pipe; and
the emergency oil way is connected with the main oil return oil way through an oil pipe, and a second ball valve is arranged on the oil pipe for connecting the emergency oil way with the main oil return oil way.
7. The hydraulic system of claim 6, wherein the emergency oil circuit is further provided with an oil inlet filter disposed between the emergency pump and the other end of the emergency oil circuit.
8. The hydraulic system according to claim 6, wherein a check valve is provided on an oil pipe for connecting the emergency oil passage and the main oil intake oil passage.
9. The hydraulic system of claim 1, wherein the welding hydraulic system comprises a rail clamp cylinder, a upsetting cylinder, and a push ram cylinder, and wherein the rail clamp cylinder, the upsetting cylinder, and the push ram cylinder are each connected to the main oil feed passage and the main oil return passage.
10. The hydraulic system of claim 9, wherein the hydraulic system is configured to,
the steel rail clamping oil cylinder comprises a movable frame clamping oil cylinder and a static frame clamping oil cylinder, the movable frame clamping oil cylinder is connected with the main oil inlet oil way and the main oil return oil way through a first three-position four-way reversing valve to realize clamping and loosening actions of the movable frame on the steel rail, and the static frame clamping oil cylinder is connected with the main oil inlet oil way and the main oil return oil way through a second three-position four-way reversing valve to realize clamping and loosening actions of the static frame on the steel rail;
the upsetting oil cylinder comprises a front upsetting oil cylinder and a rear upsetting oil cylinder, the front upsetting oil cylinder and the rear upsetting oil cylinder are connected with the main oil inlet oil way and the main oil return oil way through a third three-position four-way reversing valve so as to realize the relative separation and approaching actions of the movable frame and the static frame, and the front upsetting oil cylinder and the rear upsetting oil cylinder are connected with the main oil inlet oil way and the main oil return oil way through electrohydraulic servo valves so as to control the relative separation and approaching speeds of the movable frame and the static frame; and
The push convex cylinder comprises a forward push convex cylinder, a backward push convex cylinder and a first hydraulic motor, wherein the forward push convex cylinder and the backward push convex cylinder are connected with the main oil inlet oil way and the main oil return oil way through a fourth three-position four-way reversing valve so as to realize forward push and recovery actions of a cylinder rod of the push convex cylinder, and the first hydraulic motor is arranged on an oil inlet oil way between the fourth three-position four-way reversing valve and the forward push convex cylinder and the backward push convex cylinder.
11. The hydraulic system of claim 10, wherein a check valve is disposed on the main intake and return oil paths at a position proximate the first three-position four-way reversing valve;
a one-way valve is arranged at the positions of the main oil inlet oil way and the main oil return oil way, which are close to the second three-position four-way reversing valve;
a hydraulic lock is arranged at the positions of the main oil inlet oil way and the main oil return oil way, which are close to the third three-position four-way reversing valve; and
and one-way valves are arranged at the positions of the main oil inlet oil way and the main oil return oil way, which are close to the fourth three-position four-way reversing valve.
12. The hydraulic system of claim 1, wherein the heat treatment hydraulic system includes a coil clamping cylinder and a coil lifting cylinder, and wherein the coil clamping cylinder and the coil lifting cylinder are each connected to the main oil feed line and the main oil return line.
13. The hydraulic system of claim 12, wherein the hydraulic system is configured to,
the coil clamping oil cylinder comprises a front clamping oil cylinder, a rear clamping oil cylinder and a second hydraulic motor, wherein the front clamping oil cylinder and the rear clamping oil cylinder are connected with the main oil inlet oil way and the main oil return oil way through a fifth three-position four-way reversing valve so as to realize clamping and opening actions of the coil on a steel rail, and the second hydraulic motor is arranged on an oil inlet oil way between the fifth three-position four-way reversing valve and the front clamping oil cylinder and the rear clamping oil cylinder; and
the coil lifting oil cylinder comprises a front lifting oil cylinder and a rear lifting oil cylinder, and the front lifting oil cylinder and the rear lifting oil cylinder are connected with the main oil inlet oil way and the main oil return oil way through a sixth three-position four-way reversing valve so as to realize lifting and descending actions of the coil on the steel rail.
14. The hydraulic system of claim 13, wherein a two-way throttle is provided on the oil inlet and return paths between the fifth three-position four-way reversing valve and the front and rear clamp cylinders; and
and a hydraulic lock and a bidirectional throttle valve are sequentially arranged on an oil inlet oil way and an oil return oil way between the sixth three-position four-way reversing valve and the front lifting oil cylinder and the rear lifting oil cylinder.
15. The hydraulic system of claim 1, further comprising a hoist hydraulic system including a boom cylinder, a forearm cylinder, and a rotary hydraulic motor, and wherein the boom cylinder, the forearm cylinder, and the rotary hydraulic motor are connected to the main oil intake passage and the main oil return passage, respectively.
16. The hydraulic system of claim 15, wherein the hydraulic system is configured to,
the big arm oil cylinder comprises a front big arm oil cylinder and a rear big arm oil cylinder, the front big arm oil cylinder and the rear big arm oil cylinder are connected with the main oil inlet oil way and the main oil return oil way through a seventh three-position four-way reversing valve and a two-way throttle valve, a hydraulic lock is arranged between the oil inlet oil way and the oil return oil way between the front big arm oil cylinder and the seventh three-position four-way reversing valve, and a hydraulic lock is arranged between the oil inlet oil way and the oil return oil way between the rear big arm oil cylinder and the seventh three-position four-way reversing valve;
the small arm oil cylinder comprises a front small arm oil cylinder and a rear small arm oil cylinder, the front small arm oil cylinder and the rear small arm oil cylinder are connected with the main oil inlet oil way and the main oil return oil way through an eighth three-position four-way reversing valve and a two-way throttle valve, a hydraulic lock is arranged between the oil inlet oil way and the oil return oil way between the front small arm oil cylinder and the eighth three-position four-way reversing valve, and a hydraulic lock is arranged between the oil inlet oil way and the oil return oil way between the rear small arm oil cylinder and the eighth three-position four-way reversing valve; and
The rotary hydraulic motor is connected with the main oil inlet oil way and the main oil return oil way through a ninth three-position four-way reversing valve.
17. The hydraulic system of claim 16, wherein the main oil feed and return lines between the ninth three-position four-way reversing valve and the rotary hydraulic motor are provided with two-way throttles.
18. A hydraulic control method using the hydraulic system according to any one of claims 1 to 17, characterized in that the hydraulic control method comprises the steps of:
the hydraulic pump station provides hydraulic oil for the welding hydraulic system through the main oil inlet oil way so as to weld steel rails;
hydraulic oil discharged by the welding hydraulic system returns to the hydraulic pump station through the main oil return oil way;
the hydraulic pump station provides hydraulic oil for the heat treatment hydraulic system through the main oil inlet oil way so as to heat treat the welding seam; and
and hydraulic oil discharged by the heat treatment hydraulic system returns to the hydraulic pump station through the main oil return oil way.
19. The hydraulic control method of claim 18, wherein the hydraulic pump station includes a tank, a main oil pump, a main motor, a first ball valve, and the step of providing hydraulic oil to the welding hydraulic system and the heat treatment hydraulic system by the hydraulic pump station further includes the steps of:
Starting the main motor and the main oil pump;
the main oil pump pumps hydraulic oil from the oil tank into the main oil inlet oil path; and
hydraulic oil respectively enters the welding hydraulic system and the heat treatment hydraulic system through the first ball valve.
20. The hydraulic control method according to claim 19, wherein a check valve is further provided on the main oil feed oil path between the first ball valve and the main oil pump.
21. The hydraulic control method according to claim 19, wherein the hydraulic pump station further includes an overflow oil passage, and an overflow valve is provided on the overflow oil passage, the overflow valve being used to adjust the pressure of the main oil intake oil passage.
22. The hydraulic control method of claim 19, wherein the hydraulic pump station further comprises a cooler disposed on the main return oil circuit.
23. The method of hydraulic control of claim 19, wherein the hydraulic pump station further includes a scavenge filter disposed on the main scavenge oil path.
24. The hydraulic control method of claim 19, wherein the hydraulic pump station further comprises a heater disposed within the oil tank.
25. The hydraulic control method according to claim 19, wherein the hydraulic pump station further comprises an emergency oil path, an emergency pump and an emergency motor are provided on the emergency oil path, the emergency oil path is connected with the main oil return oil path through an oil pipe, and a second ball valve is provided on the oil pipe for connecting the emergency oil path and the main oil return oil path, wherein:
when the second ball valve is closed, hydraulic oil obtained from the oil tank through the emergency motor and the emergency pump enters the main oil inlet oil path; and
when the second ball valve is opened, hydraulic oil obtained from the oil tank through the emergency motor and the emergency pump enters the main oil return oil path.
26. The hydraulic control method according to claim 25, wherein an oil intake filter is further provided on the emergency oil passage, the oil intake filter being provided between the emergency pump and the other end of the emergency oil passage.
27. The hydraulic control method according to claim 25, wherein a check valve is provided on an oil pipe for connecting the emergency oil passage and the main oil intake oil passage.
28. The hydraulic control method of claim 18, wherein the welding hydraulic system comprises a rail clamp cylinder, a upset cylinder, and a push ram cylinder, the rail clamp cylinder comprising a movable frame clamp cylinder and a static frame clamp cylinder, the upset cylinder comprising a front upset cylinder and a rear upset cylinder, the push ram cylinder comprising a front push ram cylinder, a rear push ram cylinder, and a first hydraulic motor, wherein:
The hydraulic control method of the steel rail clamping oil cylinder comprises the following steps:
hydraulic oil enters a rodless cavity of the movable frame clamping cylinder through a first loop of the first three-position four-way reversing valve so as to enable the movable frame to clamp a steel rail;
hydraulic oil enters a rodless cavity of the static frame clamping oil cylinder through a first loop of the second three-position four-way reversing valve so that the static frame clamps the steel rail;
hydraulic oil enters a rod cavity of the movable frame clamping oil cylinder through a second loop of the first three-position four-way reversing valve so as to enable the movable frame to loosen a steel rail; and
hydraulic oil enters a rodless cavity of the static frame clamping oil cylinder through a second loop of the second three-position four-way reversing valve so as to enable the static frame to loosen the steel rail,
the hydraulic control method of the upsetting oil cylinder comprises the following steps:
hydraulic oil enters rodless cavities of the front upsetting oil cylinder and the rear upsetting oil cylinder through a first loop of the third three-position four-way reversing valve so as to relatively separate the movable frame from the static frame;
hydraulic oil enters rod cavities of the front upsetting oil cylinder and the rear upsetting oil cylinder through a second loop of the third three-position four-way reversing valve so as to enable the movable frame and the static frame to be relatively close;
hydraulic oil enters rod cavities of the front upsetting oil cylinder and the rear upsetting oil cylinder through a first loop of the electrohydraulic servo valve so that the movable frame and the static frame are relatively separated according to the speed regulated by the electrohydraulic servo valve;
Hydraulic oil enters five rod cavities of the front upsetting oil cylinder and the rear upsetting oil cylinder through a second loop of the electrohydraulic servo valve so that the movable frame and the static frame are relatively close according to the speed regulated by the electrohydraulic servo valve,
the hydraulic control method of the push-convex oil cylinder comprises the following steps:
the hydraulic oil passes through a first loop of a fourth three-position four-way reversing valve;
hydraulic oil enters rodless cavities of the forward pushing convex cylinder and the backward pushing convex cylinder through a first hydraulic motor so as to synchronously push the forward pushing convex cylinder and the backward pushing convex cylinder;
hydraulic oil passes through a second loop of the fourth three-position four-way reversing valve; and
hydraulic oil enters rod cavities of the forward pushing convex oil cylinder and the backward pushing convex oil cylinder through a first hydraulic motor so that the forward pushing convex oil cylinder and the backward pushing convex oil cylinder are synchronously recovered.
29. The hydraulic control method according to claim 28, wherein a check valve is provided at a position on the main intake oil passage and the main return oil passage near the first three-position four-way selector valve;
a one-way valve is arranged at the positions of the main oil inlet oil way and the main oil return oil way, which are close to the second three-position four-way reversing valve;
a hydraulic lock is arranged at the positions of the main oil inlet oil way and the main oil return oil way, which are close to the third three-position four-way reversing valve; and
And one-way valves are arranged at the positions of the main oil inlet oil way and the main oil return oil way, which are close to the fourth three-position four-way reversing valve.
30. The hydraulic control method of claim 18, wherein the heat treatment hydraulic system comprises a coil clamp cylinder and a coil lift cylinder, the coil clamp cylinder comprising a front clamp cylinder, a rear clamp cylinder, and a second hydraulic motor, the coil lift cylinder comprising a front lift cylinder and a rear lift cylinder, wherein:
the hydraulic control method of the coil clamping cylinder comprises the following steps:
hydraulic oil enters the second hydraulic motor through a first loop of the fifth three-position four-way reversing valve to enter oil into rodless cavities of the front clamping oil cylinder and the rear clamping oil cylinder, so that coil clamping is realized; and
hydraulic oil enters a second hydraulic motor through a second loop of the fifth three-position four-way reversing valve to enter oil into rod cavities of the front clamping oil cylinder and the rear clamping oil cylinder, so that the coil is opened;
the hydraulic control method of the coil lifting oil cylinder comprises the following steps:
hydraulic oil passes through a first loop of the sixth three-position four-way reversing valve and enters rodless cavities of the front lifting oil cylinder and the rear lifting oil cylinder, so that the coil is lifted; and
Hydraulic oil passes through a second loop of the sixth three-position four-way reversing valve and enters rod cavities of the front lifting oil cylinder and the rear lifting oil cylinder, so that coil descending is realized.
31. The hydraulic control method according to claim 30, wherein a two-way throttle valve is provided on an oil-in oil passage and an oil-return oil passage between the fifth three-position four-way selector valve and the front clamping cylinder and the rear clamping cylinder; and
and a hydraulic lock and a bidirectional throttle valve are sequentially arranged on an oil inlet oil way and an oil return oil way between the sixth three-position four-way reversing valve and the front lifting oil cylinder and the rear lifting oil cylinder.
32. The hydraulic control method of claim 18, wherein the hydraulic system further comprises a hoist hydraulic system comprising a boom cylinder, a forearm cylinder, and a rotary hydraulic motor, the boom cylinder comprising a front boom cylinder and a rear boom cylinder, the forearm cylinder comprising a front forearm cylinder and a rear forearm cylinder, wherein:
the hydraulic control method of the large arm oil cylinder comprises the following steps:
hydraulic oil sequentially enters a first loop of a seventh three-position four-way reversing valve, a two-way throttle valve and a hydraulic lock and then enters rodless cavities of a front big arm oil cylinder and a rear big arm oil cylinder, so that the big arm is led out; and
Hydraulic oil sequentially enters a first loop of a seventh three-position four-way reversing valve, a two-way throttle valve and a hydraulic lock and then enters rod cavities of a front big arm oil cylinder and a rear big arm oil cylinder, so that the big arm retreats;
the hydraulic control method of the small arm cylinder comprises the following steps:
hydraulic oil sequentially enters a first loop of the eighth three-position four-way reversing valve, a two-way throttle valve and a hydraulic lock and then enters rodless cavities of a front forearm oil cylinder and a rear forearm oil cylinder, so that the forearm is led out; and
hydraulic oil sequentially enters a second loop of the eighth three-position four-way reversing valve, a two-way throttle valve and a hydraulic lock and then enters rod cavities of a front small arm oil cylinder and a rear small arm oil cylinder, so that the small arm retreats,
the hydraulic control method of the rotary hydraulic motor comprises the following steps:
hydraulic oil enters a first loop of a ninth three-position four-way reversing valve and a two-way throttle valve and enters a rotary hydraulic motor, so that the rotary hydraulic motor rotates clockwise, and the crane rotates clockwise; and
hydraulic oil enters a second loop of the ninth three-position four-way reversing valve and the two-way throttle valve and enters the rotary hydraulic motor, so that the rotary hydraulic motor rotates anticlockwise, and the anticlockwise rotation of the crane is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170274.5A CN107775342B (en) | 2017-11-22 | 2017-11-22 | Hydraulic system and hydraulic control method for steel rail flash welding and induction heat treatment integrated machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170274.5A CN107775342B (en) | 2017-11-22 | 2017-11-22 | Hydraulic system and hydraulic control method for steel rail flash welding and induction heat treatment integrated machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107775342A CN107775342A (en) | 2018-03-09 |
| CN107775342B true CN107775342B (en) | 2024-02-23 |
Family
ID=61430903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711170274.5A Active CN107775342B (en) | 2017-11-22 | 2017-11-22 | Hydraulic system and hydraulic control method for steel rail flash welding and induction heat treatment integrated machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107775342B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106753A (en) * | 2019-06-11 | 2019-08-09 | 金鹰重型工程机械有限公司 | A kind of mobile rail-welding vehicle for railway |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007218165A (en) * | 2006-02-16 | 2007-08-30 | Shimadzu Corp | Hydraulic device |
| CN102003435A (en) * | 2010-10-13 | 2011-04-06 | 常州市瑞泰工程机械有限公司 | Hydraulic pump station for rail welding vehicle |
| CN202591968U (en) * | 2012-05-28 | 2012-12-12 | 中铁二十三局集团有限公司 | Container type base pneumatic rail welding complete device |
| CN203495407U (en) * | 2013-09-29 | 2014-03-26 | 常州市瑞泰工程机械有限公司 | Steel rail induction butt welding and heat treating device |
| CN207807098U (en) * | 2017-11-22 | 2018-09-04 | 中国铁道科学研究院金属及化学研究所 | Hydraulic system for rail flash welding and induction heat treatment all-in-one machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7053498B1 (en) * | 2005-01-18 | 2006-05-30 | Wartron Corporation | Electronic control for a hydraulically driven generator |
-
2017
- 2017-11-22 CN CN201711170274.5A patent/CN107775342B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007218165A (en) * | 2006-02-16 | 2007-08-30 | Shimadzu Corp | Hydraulic device |
| CN102003435A (en) * | 2010-10-13 | 2011-04-06 | 常州市瑞泰工程机械有限公司 | Hydraulic pump station for rail welding vehicle |
| CN202591968U (en) * | 2012-05-28 | 2012-12-12 | 中铁二十三局集团有限公司 | Container type base pneumatic rail welding complete device |
| CN203495407U (en) * | 2013-09-29 | 2014-03-26 | 常州市瑞泰工程机械有限公司 | Steel rail induction butt welding and heat treating device |
| CN207807098U (en) * | 2017-11-22 | 2018-09-04 | 中国铁道科学研究院金属及化学研究所 | Hydraulic system for rail flash welding and induction heat treatment all-in-one machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107775342A (en) | 2018-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10604915B2 (en) | Hydraulic system and hydraulic control method for construction machine | |
| CN204591839U (en) | The bender hydraulic synchronous system that a kind of hydraulic synchronous motor controls | |
| CN103693592B (en) | A kind of scissor-type aerial platform vibration hydraulic system | |
| CN107208675A (en) | The hydraulic oil energy regenerating device of Work machine | |
| CN107775342B (en) | Hydraulic system and hydraulic control method for steel rail flash welding and induction heat treatment integrated machine | |
| CN108026943A (en) | The fluid pressure drive device of Work machine | |
| CN106223391A (en) | A kind of excavator energy regenerating and utilize system | |
| CN104006015A (en) | Pressure maintaining and speed stabilizing hydraulic system of hydraulic machine | |
| CN102536141A (en) | Automatic drill-rod-replacing control system for rock-drilling drill carriage | |
| CN103233927B (en) | Hydraulic control system of hydraulic tower crane and hydraulic tower crane | |
| CN202597302U (en) | Hydraulic system and long spiral drilling machine with hydraulic system | |
| CN107013509B (en) | A kind of iron driller hydraulic clamping system | |
| CN106609672A (en) | Oil cylinder stepping type thin coal seam coal-mining machine traction part and hydraulic system | |
| CN202531060U (en) | Automatic borer change control system of rock drilling carriage | |
| CN202481949U (en) | Portal movable container crane | |
| CN104153786A (en) | Energy-saving tunnel shield thrust hydraulic system with coaxial motors | |
| CN203939503U (en) | A kind of TBM propulsion hydraulic system of double mode switching | |
| CN103016017A (en) | Variable frequency drive shield thrust hydraulic system | |
| CN207807098U (en) | Hydraulic system for rail flash welding and induction heat treatment all-in-one machine | |
| CN203717488U (en) | Fully-hydraulic control anti-explosion walking driving hydraulic system | |
| CN207598601U (en) | A kind of horizontal directional drilling ejector sleeve machine hydraulic system | |
| CN108313141A (en) | A kind of cab roof water conservancy diversion closure assembly | |
| CN111395439B (en) | Excavator movable arm-rotation closed hydraulic system and control method | |
| CN206366669U (en) | Automatic drilling production line | |
| CN103591061B (en) | A kind of complete explosion-proof walking driving hydraulic system of hydraulic control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |