CN113357100B - Offshore wind power cluster gear box accelerated life and environmental corrosion simulation test bed and working method thereof - Google Patents
Offshore wind power cluster gear box accelerated life and environmental corrosion simulation test bed and working method thereof Download PDFInfo
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- CN113357100B CN113357100B CN202110694064.6A CN202110694064A CN113357100B CN 113357100 B CN113357100 B CN 113357100B CN 202110694064 A CN202110694064 A CN 202110694064A CN 113357100 B CN113357100 B CN 113357100B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to a simulation test bed for the accelerated life and environmental corrosion of a marine wind power cluster gear box and a working method thereof, which is characterized by comprising a machine base, a worm and gear driving assembly, a gear box transmission mechanism and a shaft bending loading mechanism; the worm and gear driving assembly comprises a motor, a motor base, a coupler, a worm, a left bearing, a right bearing, a left bearing seat, a right bearing seat, an upper worm wheel and a lower worm wheel; the motor is fixed on the machine base through a motor base, the motor is connected with the worm through a coupler, the worm is connected with the left bearing seat and the right bearing seat through a left bearing and a right bearing respectively, the left bearing seat and the right bearing seat are fixed on the machine base through bolts, and two upper worm gears on the upper side of the worm and two lower worm gears on the lower side form worm gear and worm transmission; the test bed provided by the invention can simulate a severe environment, and simultaneously carries out accelerated life degradation tests of a plurality of gearboxes, so that a reliable test basis is provided for improving the intelligent operation and maintenance level of the offshore wind power cluster.
Description
Technical field:
the invention relates to a simulation test bed for the accelerated life and environmental corrosion of a marine wind power cluster gear box, and belongs to the technical field of accelerated life tests of rotating machinery.
The background technology is as follows:
the offshore wind power cluster works in a severe marine environment for a long time, and compared with the onshore wind power cluster, more complex natural working conditions bring more challenges to the operation and maintenance of the offshore wind power cluster; the gear box is used as a key transmission part of the offshore wind turbine, and the offshore wind power is continuously changed, so that the gear box is more easily damaged due to frequent impact, and high maintenance cost is further generated.
Therefore, the life degradation states of a plurality of gearboxes in the ocean severe environment are simulated simultaneously through the offshore wind power cluster gearbox acceleration life and environment corrosion simulation test bed, and the method has important significance for building an offshore wind power cluster intelligent operation and maintenance system.
The plurality of wind turbines in the same wind power cluster are usually in approximate working conditions, the service life degradation of the wind turbines has certain similarity, and the acquisition of performance degradation data of the plurality of wind turbines in approximate working conditions is particularly important; at present, the performance degradation device of the gear box only can carry out performance degradation test on one gear box at the same time, can not carry out test on a plurality of gear boxes at the same time, and the shaft bending is used as a common gear box fault form, the simulation test of the shaft bending change process is difficult to realize by the existing performance degradation device of the gear box, and more urgent, the influence of environment corrosion on the service life of the gear box is ignored by the existing performance degradation device of the gear box, the simulation of environment corrosion is lacked, and the research requirement of the accelerated service life test of the gear box under severe environment is difficult to meet.
The invention comprises the following steps:
the invention aims to provide a simulation test bed for the accelerated life and the environmental corrosion of a marine wind power cluster gear box and a working method thereof, and the test bed can simulate a severe environment, simultaneously perform accelerated life degradation tests of a plurality of gear boxes, realize simulation of a shaft bending change process according to user requirements and provide reliable test basis for improving the intelligent operation and maintenance level of the marine wind power cluster.
The technical scheme adopted for solving the technical problems is as follows:
the invention relates to a simulation test bed for the accelerated life and environmental corrosion of a marine wind power cluster gear box, which is characterized by comprising a machine base, a worm and gear driving assembly, a gear box transmission mechanism and a shaft bending loading mechanism;
the worm and gear driving assembly comprises a motor, a motor base, a coupler, a worm, a left bearing, a right bearing, a left bearing seat, a right bearing seat, an upper worm wheel and a lower worm wheel; the motor is fixed on the machine base through a motor base, the motor is connected with the worm through a coupler, the worm is connected with the left bearing seat and the right bearing seat through a left bearing and a right bearing respectively, the left bearing seat and the right bearing seat are fixed on the machine base through bolts, and two upper worm gears on the upper side of the worm and two lower worm gears on the lower side form worm gear and worm transmission;
the gear box transmission mechanism comprises an upper gear box, an upper dynamic torque sensor, an upper magnetic powder brake, an upper base plate, a lower gear box, a lower dynamic torque sensor, a lower magnetic powder brake, a lower base plate and a lower base plate; the input shaft of the upper gear box is connected with the upper worm wheel through a coupler, the output shaft of the upper gear box is connected with the upper dynamic torque sensor through a coupler, the upper gear box is provided with a three-way acceleration sensor, the upper dynamic torque sensor is connected with the upper magnetic powder brake through a coupler, the upper gear box, the upper dynamic torque sensor and the upper magnetic powder brake are all fixed on an upper backing plate, and the upper backing plate is fixed on the base through an upper base; the input shaft of the lower gearbox is connected with the lower worm wheel through a coupler, the output shaft of the lower gearbox is connected with the lower dynamic torque sensor through a coupler, the lower gearbox is provided with a three-way acceleration sensor, the lower dynamic torque sensor is connected with the lower magnetic powder brake through a coupler, the lower gearbox, the lower dynamic torque sensor and the lower magnetic powder brake are all fixed on a lower backing plate, and the lower backing plate is fixed on the base through a lower base;
the bearing bending loading mechanism comprises a cylinder barrel side bearing, a cylinder barrel side rotating bearing seat, a cylinder, a piston rod side bearing, a piston rod side rotating bearing seat and a frame hook, wherein an inner ring of the cylinder barrel side bearing is fixed on an input shaft of a lower side gear box, an outer ring of the cylinder barrel side bearing seat is fixedly connected with the cylinder barrel side rotating bearing seat, an input shaft of the other lower side gear box is connected with the piston rod side bearing inner ring, an outer ring of the piston rod side bearing seat is fixedly connected with the piston rod side rotating bearing seat with the hook, a piston rod of the cylinder is provided with a round hole for being connected with the hook or the frame hook on the piston rod side rotating bearing seat, and the piston rod is connected with the hook of the piston rod side rotating bearing seat or the frame hook arranged on the frame;
furthermore, the test bed is also provided with an environment simulation unit;
the environment simulation unit comprises an environment cover, a spray head and a temperature and humidity controller, wherein the environment cover is reversely buckled above the two upper side gear boxes and the two lower side gear boxes, the lower part of the environment cover is in sealing connection with the machine base, and the spray head and the temperature and humidity controller are fixedly arranged on the environment cover.
Further, a data acquisition control center is also arranged on the test bed;
the data acquisition control center is electrically connected with the motor, the upper side dynamic torque sensor, the upper side magnetic powder brake, the lower side dynamic torque sensor, the lower side magnetic powder brake, the three-way acceleration sensor on the upper side gear box, the three-way acceleration sensor on the lower side gear box, the air cylinder, the spray head and the temperature and humidity controller through signal wires, acquires torque signals of the upper side dynamic torque sensor and the lower side dynamic torque sensor, acquires three-way acceleration signals of the upper side gear box and the lower side gear box, and respectively controls the motor rotation speed, the output torque of the upper side magnetic powder brake and the lower side magnetic powder brake, the air cylinder tension, the work of the spray head and the temperature and humidity controller.
Further, the middle parts of the upper surfaces of the upper base plate and the lower base plate are provided with countersink channels, the bottom surfaces of the upper base plate and the base plate are provided with rectangular ladder grooves with rectangular strip-shaped cross sections, rectangular nuts are arranged in the ladder grooves, hexagon socket bolts are arranged in the countersink channels in a penetrating mode from top to bottom, and the hexagon socket bolts penetrate through the ladder grooves and are in threaded connection with the rectangular nuts in the ladder grooves.
Furthermore, the coupler is a cylindrical sleeve, two threaded holes for penetrating locking screws are formed in the cylindrical sleeve, and after two shafts penetrate into the cylindrical sleeve, the two shafts are locked through the threaded holes through the locking screws.
The invention relates to a working method of an offshore wind power cluster gear box accelerated life and environmental corrosion simulation test bed, which is characterized by comprising the following steps of: the motor drives the worm and drives the two upper worm gears and the two lower worm gears to rotate; the data acquisition control center controls the output torque of the upper magnetic powder brake and the lower magnetic powder brake in real time according to the input load torque change curve of each gear box; the round hole of the piston rod of the air cylinder is connected with a hook of a piston rod side rotary bearing seat or a seat hook arranged on a seat, and the data acquisition control center radially bears force on the input shaft of the lower gearbox and controls the tension of the air cylinder in real time; the data acquisition control center controls the environment in the environment cover through the spray head and the temperature and humidity controller according to the input salt spray test conditions, wherein the spray head is mainly responsible for spraying spray solution, and the temperature and humidity controller is mainly responsible for regulating the temperature and humidity in the environment cover; in the accelerated life test, signals acquired by a three-way acceleration sensor on an upper gear box and a three-way acceleration sensor on a lower gear box are transmitted to a data acquisition control center in real time for storage; and the accelerated life test is continuously carried out until the test time set by the user is reached, and the accelerated life test is ended.
The invention relates to a mounting method of a marine wind power cluster gear box acceleration service life and environmental corrosion simulation test bed, which is characterized in that a motor base, a motor, a worm, a left bearing seat and a right bearing seat for supporting the worm are fixed on a machine base and are in relatively detachable sliding connection with an upper base, a lower base is in relatively detachable sliding connection with the machine base, namely, the middle parts of the upper base and the upper surface of the lower base are provided with sinking channels, the bottom surfaces of the upper base and the machine base are provided with rectangular ladder grooves with rectangular cross sections, rectangular nuts are arranged in the ladder grooves, hexagon socket bolts penetrate through the ladder grooves from top to bottom in the sinking channels and are in threaded connection with the rectangular nuts in the ladder grooves;
when the gear box needs to be replaced, the inner hexagon bolt and the rectangular nut are unscrewed relatively, the upper base plate and the upper base plate can slide relatively, the lower base plate and the machine base slide relatively, and the inner hexagon bolt and the rectangular nut are locked relatively when the disassembly position is reached;
the coupler is a cylindrical sleeve, two threaded holes for penetrating locking screws are formed in the cylindrical sleeve, and after two shafts penetrate into the cylindrical sleeve, the two shafts are locked through the threaded holes through the locking screws; when the gear box needs to be replaced, the locking screws of the couplings on the input shaft and the output shaft of the gear box are unscrewed, the gear box is disassembled, a new gear box is replaced, and the gear box is locked by the locking screws.
Compared with the prior art, the invention has the following advantages and outstanding technical effects: 1. in the scheme of the invention, when the test is carried out, the worm and gear transmission mode is adopted, so that the accelerated life test can be carried out on a plurality of gear boxes (2-6 groups) at the same time, the performance degradation condition of the plurality of gear boxes in the wind power cluster is well simulated, and the collection of performance degradation data of the plurality of gear boxes is realized; 2. the test bed is provided with the shaft bending loading mechanism, radial force can be applied to the input shafts of two or one gear box through the air cylinders according to the needs of users, and the tensile force of the air cylinders is adjusted in real time so as to compare other radial forces which are not applied, so that the influence of the radial force on the gear box is researched, and the simulation of the shaft bending change process of the gear box is realized; 3. the test bed is provided with an environment simulation unit which comprises a spray head and a temperature and humidity controller which are connected with a data acquisition control center, and can manually simulate the environment condition of salt fog and adjust the temperature and humidity of the environment in real time; 4. the data acquisition control center of the test bed comprises functions of gearbox accelerated life test control, performance degradation data acquisition and environment simulation condition adjustment, each gearbox is provided with a magnetic powder brake, the motor rotation speed and the output torque of each magnetic powder brake can be adjusted in real time according to the test requirements of users, the adjustment of working conditions of constant torque, periodical change torque and random change torque can be realized, and the working conditions of different units in a wind power plant can be better simulated.
Description of the drawings:
FIG. 1 is a schematic diagram of the structural principle of an embodiment of a simulation test stand for the accelerated life and environmental corrosion of a marine wind power cluster gear box.
FIG. 2 is a schematic diagram of the structural principle of the environmental simulation unit of the present invention;
FIG. 3 is a cross-sectional view of a coupling;
FIG. 4 is a cross-sectional view of the upper plate and upper base;
FIG. 5 is a control schematic block diagram;
in the figure: 1-a stand; 2-a left bearing seat; 3-left bearing; 4-worm; 5-upper base; 6-upper worm wheel; 7-an upper backing plate; 8-upper side gearbox; 9-upper side dynamic torque sensor; 10-upper side magnetic powder brake; 11-right bearing; 12-right bearing seat; 13-an electric motor; 14-coupling; 15-a motor base; 16-lower worm gear; 17-a piston rod side bearing; 18-lower side gearbox; 19-underside dynamic torque sensor; 20-underside magnetic powder brake; 21-lower backing plate, 22-lower base, 23-piston rod side rotary bearing seat; 24-hooking the machine base; 25-cylinder; 26-cylinder barrel side rotary bearing seat; 27-a cylinder side bearing; 28-an environmental enclosure; 29-a spray head; 30-a temperature and humidity controller; 31-sinking the pore canal; 32-socket head cap bolts; 33-rectangular nut; 34-threaded holes.
The specific embodiment is as follows:
the structure, principle and operation of the present invention will be further described with reference to the accompanying drawings
The invention provides a simulation test bed for the accelerated life and environmental corrosion of a marine wind power cluster gear box, which is shown in figures 1 and 2, and comprises a machine base 1, a worm and gear driving assembly, a gear box transmission mechanism, a shaft bending loading mechanism, an environmental simulation unit and a data acquisition control center; the worm and gear driving assembly comprises a motor 13, a motor base 15, a coupler 14, a worm 4, a left bearing 3, a right bearing 11, a left bearing seat 2, a right bearing seat 12, an upper worm wheel 6 and a lower worm wheel 16; the motor 13 is fixed on the machine base 1 through a motor base 15, the motor 13 is connected with the worm 4 through a coupler 14, the worm 4 is connected with the left bearing seat 2 and the right bearing seat 12 through a left bearing 3 and a right bearing 11 respectively, the left bearing seat 2 and the right bearing seat 12 are fixed on the machine base 1 through bolts, and two upper worm gears 6 on the upper side of the worm 4 and two lower worm gears 16 on the lower side form worm gear and worm transmission; the gear box transmission mechanism comprises an upper gear box 8, an upper dynamic torque sensor 9, an upper magnetic powder brake 10, an upper backing plate 7, an upper base 5, a lower gear box 18, a lower dynamic torque sensor 19, a lower magnetic powder brake 20, a lower backing plate 21 and a lower base 22; the input shaft of the upper gear box 8 is connected with the upper worm wheel 6 through a coupler, the output shaft of the upper gear box 8 is connected with the upper dynamic torque sensor 9 through a coupler, a three-way acceleration sensor (the components are smaller and are not shown in the figure), the three-way acceleration sensor has the advantages that only a three-dimensional acceleration sensor is used for detecting acceleration signals under the condition that the movement direction of an object is not known in advance, the three-dimensional acceleration sensor has the characteristics of small volume and light weight, the spatial acceleration can be measured, the movement property of the object can be comprehensively and accurately reflected), the upper dynamic torque sensor 9 is connected with the upper magnetic powder brake 10 through the coupler, the upper gear box 8, the upper dynamic torque sensor 9 and the upper magnetic powder brake 10 are all fixed on the upper base plate 7, and the upper base plate 7 is fixed on the base 1 through the upper base 5; the input shaft of the lower gear box 18 is connected with the lower worm wheel 16 through a coupler, the output shaft of the lower gear box 18 is connected with the lower dynamic torque sensor 19 through a coupler, a three-way acceleration sensor is arranged on the lower gear box 18, the lower dynamic torque sensor 19 is connected with the lower magnetic powder brake 20 through a coupler, the lower gear box 18, the lower dynamic torque sensor 19 and the lower magnetic powder brake 20 are all fixed on the lower backing plate 21, and the lower backing plate 21 is fixed on the base 1 through the lower base 22; the shaft bending loading mechanism comprises a cylinder barrel side bearing 27, a cylinder barrel side rotating bearing seat 26, a cylinder 25, a piston rod side bearing 17, a piston rod side rotating bearing seat 23 and a frame hook 24, wherein the inner ring of the cylinder barrel side bearing 27 is fixed on the input shaft of one lower side gear box, the outer ring of the cylinder barrel side bearing 27 is fixedly connected with the cylinder barrel side rotating bearing seat 26, the cylinder barrel of the cylinder 25 is connected with the cylinder barrel side rotating bearing seat 26, the input shaft of the other lower side gear box 18 is connected with the inner ring of the piston rod side bearing 17, the outer ring of the piston rod side bearing 17 is fixedly connected with the piston rod side rotating bearing seat 23 with a hook, a piston rod of the cylinder 25 is provided with a round hole, and the piston rod can be connected with the hook of the piston rod side rotating bearing seat 23 or the frame hook 24 arranged on the frame 1 according to requirements; the environment simulation unit comprises an environment cover 28, a spray head 29 and a temperature and humidity controller 30, wherein the environment cover 28 is reversely buckled above the two upper side gear boxes 8 and the two lower side gear boxes 18, the lower side of the environment cover 28 is in sealing connection with the machine base 1, and the spray head 29 and the temperature and humidity controller 30 are fixedly arranged on the environment cover 28.
The data acquisition control center is electrically connected with the motor 13, the upper side dynamic torque sensor 9, the upper side magnetic powder brake 10, the lower side dynamic torque sensor 19, the lower side magnetic powder brake 20, the three-way acceleration sensor on the upper side gear box 8, the three-way acceleration sensor on the lower side gear box 18, the air cylinder 25, the spray head 29 and the temperature and humidity controller 30 through signal wires, acquires torque signals of the upper side dynamic torque sensor 9 and the lower side dynamic torque sensor 19, acquires three-way acceleration signals of the upper side gear box 8 and the lower side gear box 18, and respectively controls the rotation speed of the motor 13, the output torque of the upper side magnetic powder brake 10 and the lower side magnetic powder brake 20, the tension of the air cylinder 25, and the work of the spray head 29 and the temperature and humidity controller 30.
The dynamic torque sensor, the magnetic powder brake and the three-way acceleration sensor are all existing commercial components and are not described in detail herein.
The principle and the working process of the invention are as follows:
the motor 13 drives the worm 4 according to the test requirement of a user so as to drive the two upper worm gears 6 and the two lower worm gears 16 to rotate; the data acquisition control center controls the output torque of the upper magnetic powder brake 10 and the lower magnetic powder brake 20 in real time according to the load torque change curve of each gear box input by a user; according to the user setting, connecting a round hole of a piston rod of the air cylinder 25 with a hook of a piston rod side rotary bearing seat 23 or a stand hook 24 arranged on the stand 1, and controlling the pulling force of the air cylinder 25 in real time by a data acquisition control center according to the radial stress of an input shaft of the lower gearbox 18 input by the user; the data acquisition control center controls the environment in the environment cover 28 through the spray head 29 and the temperature and humidity controller 30 according to salt spray test conditions input by a user, wherein the spray head 29 is mainly responsible for spraying spray solution, and the temperature and humidity controller 30 is mainly responsible for regulating the temperature and humidity in the environment cover 28; in the accelerated life test, signals acquired by a three-way acceleration sensor on the upper side gear box 8 and a three-way acceleration sensor on the lower side gear box 18 are transmitted to a data acquisition control center in real time for storage; and the accelerated life test is continuously carried out until the test time set by the user is reached, and the accelerated life test is ended.
According to the installation method of the offshore wind power cluster gearbox acceleration service life and environmental corrosion simulation test bed, a motor base 15, a motor 13, a worm 4, a left bearing seat 2 and a right bearing seat 12 for supporting the worm are fixed on a machine base 1, an upper base plate 7 is in relatively detachable sliding connection with an upper base 5, a lower base 22 is in relatively detachable sliding connection with the machine base 1, namely, the middle parts of the upper surfaces of the upper base plate 7 and the lower base 22 are provided with a sunk hole channel 31, the bottom surfaces of the upper base 5 and the machine base 1 are provided with rectangular ladder grooves with rectangular strip-shaped sections, rectangular nuts 33 are arranged in the ladder grooves, hexagon socket bolts 32 are penetrated from top to bottom in the sunk hole channel, and pass through the ladder grooves and are in threaded connection with the rectangular nuts in the ladder grooves;
when the gear box needs to be replaced, the inner hexagon bolt and the rectangular nut are unscrewed relatively, the upper base plate and the upper base plate can slide relatively, the lower base plate and the machine base slide relatively, and the inner hexagon bolt and the rectangular nut are locked relatively when the disassembly position is reached;
the coupler is a cylindrical sleeve, two threaded holes 34 for penetrating locking screws are formed in the cylindrical sleeve, and after two shafts penetrate into the cylindrical sleeve, the shafts are locked through the threaded holes through the locking screws; when the gear box needs to be replaced, the locking screws of the couplings on the input shaft and the output shaft of the gear box are unscrewed, the gear box is disassembled, a new gear box is replaced, and the gear box is locked by the locking screws.
Claims (5)
1. The marine wind power cluster gear box acceleration life and environmental corrosion simulation test bed is characterized by comprising a machine base, a worm and gear driving assembly, a gear box transmission mechanism and a shaft bending loading mechanism;
the worm and gear driving assembly comprises a motor, a motor base, a coupler, a worm, a left bearing, a right bearing, a left bearing seat, a right bearing seat, an upper worm wheel and a lower worm wheel; the motor is fixed on the machine base through a motor base, the motor is connected with the worm through a coupler, the worm is connected with the left bearing seat and the right bearing seat through a left bearing and a right bearing respectively, the left bearing seat and the right bearing seat are fixed on the machine base through bolts, and two upper worm gears on the upper side of the worm and two lower worm gears on the lower side form worm gear and worm transmission;
the gear box transmission mechanism comprises an upper gear box, an upper dynamic torque sensor, an upper magnetic powder brake, an upper base plate, a lower gear box, a lower dynamic torque sensor, a lower magnetic powder brake, a lower base plate and a lower base plate; the input shaft of the upper gear box is connected with the upper worm wheel through a coupler, the output shaft of the upper gear box is connected with the upper dynamic torque sensor through a coupler, the upper gear box is provided with a three-way acceleration sensor, the upper dynamic torque sensor is connected with the upper magnetic powder brake through a coupler, the upper gear box, the upper dynamic torque sensor and the upper magnetic powder brake are all fixed on an upper backing plate, and the upper backing plate is fixed on the base through an upper base; the input shaft of the lower gearbox is connected with the lower worm wheel through a coupler, the output shaft of the lower gearbox is connected with the lower dynamic torque sensor through a coupler, the lower gearbox is provided with a three-way acceleration sensor, the lower dynamic torque sensor is connected with the lower magnetic powder brake through a coupler, the lower gearbox, the lower dynamic torque sensor and the lower magnetic powder brake are all fixed on a lower backing plate, and the lower backing plate is fixed on the base through a lower base;
the bearing bending loading mechanism comprises a cylinder barrel side bearing, a cylinder barrel side rotating bearing seat, a cylinder, a piston rod side bearing, a piston rod side rotating bearing seat and a frame hook, wherein an inner ring of the cylinder barrel side bearing is fixed on an input shaft of a lower side gear box, an outer ring of the cylinder barrel side bearing seat is fixedly connected with the cylinder barrel side rotating bearing seat, an input shaft of the other lower side gear box is connected with the piston rod side bearing inner ring, an outer ring of the piston rod side bearing seat is fixedly connected with the piston rod side rotating bearing seat with the hook, a piston rod of the cylinder is provided with a round hole for being connected with the hook or the frame hook on the piston rod side rotating bearing seat, and the piston rod is connected with the hook of the piston rod side rotating bearing seat or the frame hook arranged on the frame; the shaft bending loading mechanism is used for simultaneously applying radial force to the input shafts of two or one gear box through the air cylinders according to the requirements of users, and adjusting the tensile force of the air cylinders in real time so as to compare other radial forces which are not applied;
the test bed is also provided with an environment simulation unit;
the environment simulation unit comprises an environment cover, a spray head and a temperature and humidity controller, wherein the environment cover is reversely buckled above the two upper side gear boxes and the two lower side gear boxes, the lower part of the environment cover is in sealing connection with the machine base, and the spray head and the temperature and humidity controller are fixedly arranged on the environment cover;
the test bed is also provided with a data acquisition control center;
the data acquisition control center is electrically connected with the motor, the upper side dynamic torque sensor, the upper side magnetic powder brake, the lower side dynamic torque sensor, the lower side magnetic powder brake, the three-way acceleration sensor on the upper side gear box, the three-way acceleration sensor on the lower side gear box, the air cylinder, the spray head and the temperature and humidity controller through signal wires, acquires torque signals of the upper side dynamic torque sensor and the lower side dynamic torque sensor, acquires three-way acceleration signals of the upper side gear box and the lower side gear box, and respectively controls the motor rotation speed, the output torque of the upper side magnetic powder brake and the lower side magnetic powder brake, the air cylinder tension, the work of the spray head and the temperature and humidity controller.
2. The offshore wind power cluster gearbox accelerated life and environmental corrosion simulation test bed according to claim 1, wherein the middle parts of the upper surfaces of the upper base plate and the lower base plate are provided with countersink channels, the bottom surfaces of the upper base plate and the base plate are provided with rectangular ladder grooves with rectangular strip-shaped cross sections, rectangular nuts are arranged in the ladder grooves, hexagon socket bolts penetrate through the ladder grooves from top to bottom in the countersink channels, and are in threaded connection with the rectangular nuts in the ladder grooves.
3. The offshore wind power cluster gearbox accelerated life and environmental corrosion simulation test bed according to claim 2, wherein the coupler is a cylindrical sleeve, two threaded holes for penetrating locking screws are formed in the cylindrical sleeve, and after the two shafts are penetrated into the cylindrical sleeve, the two shafts are locked through the threaded holes through the locking screws.
4. A working method of the offshore wind power cluster gearbox accelerated life and environmental corrosion simulation test stand is characterized in that a motor drives a worm and drives two upper worm gears and two lower worm gears to rotate; the data acquisition control center controls the output torque of the upper magnetic powder brake and the lower magnetic powder brake in real time according to the input load torque change curve of each gear box; the round hole of the piston rod of the air cylinder is connected with a hook of a piston rod side rotary bearing seat or a seat hook arranged on a seat, and the data acquisition control center radially bears force on the input shaft of the lower gearbox and controls the tension of the air cylinder in real time; the data acquisition control center controls the environment in the environment cover through the spray head and the temperature and humidity controller according to the input salt spray test conditions, wherein the spray head is mainly responsible for spraying spray solution, and the temperature and humidity controller is mainly responsible for regulating the temperature and humidity in the environment cover; in the accelerated life test, signals acquired by a three-way acceleration sensor on an upper gear box and a three-way acceleration sensor on a lower gear box are transmitted to a data acquisition control center in real time for storage; and the accelerated life test is continuously carried out until the test time set by the user is reached, and the accelerated life test is ended.
5. A mounting method of a marine wind power cluster gear box acceleration service life and environmental corrosion simulation test bed is characterized in that a motor base, a motor, a worm, a left bearing seat and a right bearing seat for supporting the worm are all fixed on a machine base and are fixedly connected with the machine base in a relatively detachable sliding manner, an upper base plate is connected with the upper base in a relatively detachable sliding manner, namely, the middle parts of the upper surfaces of the upper base plate and the lower base are provided with sinking channels, the bottoms of the upper base and the machine base are provided with rectangular ladder grooves with rectangular strip-shaped sections, rectangular nuts are arranged in the ladder grooves, and hexagon socket bolts penetrate through the ladder grooves from top to bottom in the sinking channels and are in threaded connection with the rectangular nuts in the ladder grooves;
when the gear box needs to be replaced, the inner hexagon bolt and the rectangular nut are unscrewed relatively, the upper base plate and the upper base plate can slide relatively, the lower base plate and the machine base slide relatively, and the inner hexagon bolt and the rectangular nut are locked relatively when the disassembly position is reached;
the coupler is a cylindrical sleeve, two threaded holes for penetrating locking screws are formed in the cylindrical sleeve, and after two shafts penetrate into the cylindrical sleeve, the two shafts are locked through the threaded holes through the locking screws; when the gear box needs to be replaced, the locking screws of the couplings on the input shaft and the output shaft of the gear box are unscrewed, the gear box is disassembled, a new gear box is replaced, and the gear box is locked by the locking screws.
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| CN114115095B (en) * | 2021-10-21 | 2024-04-12 | 杭州前进齿轮箱集团股份有限公司 | Gear box test working condition adjusting device and method |
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| CN113357100A (en) | 2021-09-07 |
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