CN114603306B - Method for assembling outer ring of aircraft wheel bearing and hub heating device - Google Patents
Method for assembling outer ring of aircraft wheel bearing and hub heating device Download PDFInfo
- Publication number
- CN114603306B CN114603306B CN202210328029.7A CN202210328029A CN114603306B CN 114603306 B CN114603306 B CN 114603306B CN 202210328029 A CN202210328029 A CN 202210328029A CN 114603306 B CN114603306 B CN 114603306B
- Authority
- CN
- China
- Prior art keywords
- hub
- shell
- holes
- plate
- heating element
- 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
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
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The application provides an aircraft wheel bearing outer ring assembly method and a hub heating device, wherein the method comprises the following steps: step 1: cleaning the surfaces of the hub and the bearing outer ring part; step 2: the inner bearing hole (14) and the outer bearing hole (15) of the hub (13) are subjected to heating treatment through a preset hub heating device; step 3: ice-cooling the outer ring of the bearing; step 4: assembling the ice-cooled bearing outer ring on the heated hub; step 5: and checking the assembled hub.
Description
Technical Field
The invention relates to an aircraft wheel assembly technology, in particular to an aircraft wheel bearing outer ring assembly method and a hub heating device.
Background
The aircraft wheel comprises a hub and a bearing, the bearing is a tapered roller bearing, the tapered roller bearing comprises a bearing inner ring and a bearing outer ring, the bearing outer ring is assembled in a hub bearing hole with a certain interference, the bearing inner ring is sleeved on an aircraft landing gear wheel shaft, and the aircraft wheel is installed and supported on the aircraft landing gear wheel shaft through the bearing for taking off, landing and running and ground sliding and turning of the aircraft. In the process of taking off and landing running of an airplane, the speed and the load of the airplane are high, the speed and the load are rapidly changed in a short time and are accompanied by impact and vibration, and the extremely severe use condition requires that the bearing is firmly arranged on the hub so as to avoid the loose failure of the outer ring of the bearing, thereby causing the locking and damage of the airplane wheel and bringing serious consequences. The loose failure of the outer ring of the bearing is one of the common failures in the use of the outer field of the aircraft wheel. The main technical measure for guaranteeing the use reliability of the bearing is to adopt reasonable larger interference fit. Increasing the interference facilitates a secure long-term fit of the bearing outer ring and the hub, but presents difficulties in mounting the bearing outer ring. The temperature difference method is a common technological method for manufacturing interference fit assembly operation by machinery. And a gap is formed between the parts (the hole and the shaft) through the temperature difference for assembly, and when the temperature difference disappears, the hole is reduced and the shaft is expanded to obtain the required interference fit. The existing aircraft wheel bearing assembly adopts a temperature difference method, and is generally only used for heating the wheel hub, and the bearing to be assembled is at normal temperature. The operators put the hubs into the high-temperature box, heat the hubs for a certain time at a specified temperature, then take the hubs out of the box, put the outer rings of the bearings to be mounted into the bearing holes of the hot hubs at normal temperature, and assemble the hubs in place. The prior art has the defects of large energy consumption and high operation strength. Because the hub is large in volume and heavy in weight, a large amount of electric energy is consumed by the whole hub when the whole hub is completely heated, and a large amount of physical power is consumed by moving the hub up and down and boxing and discharging the hub; secondly, the machine wheel which is not suitable for limiting the heating temperature is not suitable for; because these wheels are surface-strengthened (e.g., shot-blasted, rolled), the hub heating temperature cannot be too high. Because of the limitation of the heating temperature, the thermal expansion of the hub bearing hole is too small, so that the bearing assembly difficulty is increased and even the bearing hole cannot be filled. From green, energy-conservation, alleviate operative employee intensity of labour, guarantee the smooth assembly of interference fit bearing to keep wheel hub surface reinforcement not influenced, need improve current aircraft wheel bearing assembly operation.
Disclosure of Invention
The invention aims to overcome the defects of large energy consumption, high operation strength and inapplicability to limit heating temperature of a wheel in the prior art, and provides an assembly method of an outer ring of an aircraft wheel bearing and a hub heating device.
In a first aspect, the present application provides a method of assembling an outer ring of an aircraft wheel bearing, the method comprising:
step 1: cleaning the surfaces of the hub and the bearing outer ring part;
step 2: the inner bearing hole 14 and the outer bearing hole 15 of the hub 13 are subjected to heating treatment by a preset hub heating device;
step 3: ice-cooling the outer ring of the bearing;
step 4: assembling the ice-cooled bearing outer ring on the heated hub;
step 5: and checking the assembled hub.
Specifically, the inner bearing hole 14 and the outer bearing hole 15 of the hub 13 are heated by a preset hub heating device, including:
the hub heating device is arranged on the end face of the hub core of the hub, and is powered on to heat the position where the hub bearing hole is located.
Specifically, the heating temperature range for heating the hub bearing hole of the hub is 90-125 ℃; the heat preservation time range is as follows: 45-65 min.
Specifically, the ice-cooling temperature range for ice-cooling the bearing outer ring is: -60 to-90 ℃; the heat preservation time range is as follows: 30-45 min.
In a second aspect, the present application provides a hub heating device comprising an electric heater and accessories, the electric heater comprising a handle 1, a cover plate 2, a housing 3, a heat insulating plate 4, a temperature controller 5, a first heating element 6, a second heating element 8, a temperature sensor 7, a sheath 9 and an electrical socket 16, a temperature/time setting button plate 17; the accessory comprises a backing ring 10, a baffle 11 and a filler 12, wherein:
the shell 3 is an assembly substrate, the shell 3 is a cylinder with one end closed, a bottom plate of the inner cavity of the cylinder of the shell 3 is provided with a middle hole, an outer hole and a temperature sensor mounting hole, the middle hole is provided with a first heating element 6, the outer hole close to the cylinder wall is provided with a second heating element 8, the temperature sensor mounting hole is provided with a temperature sensor 7, and the temperature controller 5 is arranged in the inner cavity of the cylinder of the shell 3; the outer surface of the cylinder body of the shell 3 is provided with an electrical socket 16; threaded holes are uniformly distributed on the circumferential direction of the upper end face of the cylinder body of the shell 3 and are used for fixing the cover plate 2; screw holes are uniformly distributed on the lower end surface of the cylinder body of the shell 3 and are used for fixing the heat insulation plate 4; the temperature controller 5 is electrically connected with the electrical socket 16, the first heating element 6 and the second heating element 8;
the sheath 9 is a cylinder with a flange at one end, holes are uniformly distributed in the circumferential direction of the flange, the center line of the holes is coaxial with the screw holes at the lower end surface of the shell 3 and the center line of the circumferential holes of the heat insulation plate 4, and the sheath 9 and the heat insulation plate 4 are fixed with the bottom plate of the shell 3 by mounting screws;
the temperature sensor 7 is arranged in the middle of the bottom plate of the inner cavity of the shell 3; the temperature sensor 7 is electrically connected with the temperature controller 5;
the first heating element 6 is a U-shaped piece, one end of the first heating element is arranged in the middle of the bottom plate of the inner cavity of the shell 3, two lead ends penetrate through the heat insulation plate 4 and are fixed with the bottom plate of the shell 3, the other end of the first heating element stretches into the middle of the inner cavity of the bearing hole of the hub 13, and the inner cavity of the hub core of the hub 13 is heated after being electrified, so that the inner walls of the inner bearing hole 14 and the outer bearing hole 15 are heated; the second heating element 8 is a solenoid-shaped piece and is arranged on the periphery of the bottom plate of the inner cavity of the shell 3, two lead ends penetrate through the heat insulation plate 4 and are fixed with the bottom plate of the shell 3, the solenoid part is sleeved around the hub 13 hub core and stretches into the hub 13 spoke plate, and after being electrified, the outer wall of the hub 13 hub core is heated, so that the outer walls of the inner bearing hole 14 and the outer bearing hole 15 are heated.
Specifically, the handle 1 is fixedly connected with the cover plate 2, the handle 1 is a rod piece with a rectangular cross section and two supporting legs, and the two supporting legs are fixedly connected with the cover plate 2.
The cover plate 2 is fixedly connected with the shell 3, the cover plate 2 is a disc piece, holes are uniformly distributed in the circumferential direction of the cover plate 2, the center line of the holes is coaxial with the center line of a threaded hole of the shell 3, and the holes are used for installing screws to connect the shell 3; a temperature/time setting button plate 17 is arranged on the cover plate 2; the temperature/time setting button board 17 is electrically connected to the temperature controller 5.
The heat insulating plate 4 and the sheath 9 are fixedly connected with the shell 3, the heat insulating plate 4 is a disc piece, the disc is provided with holes corresponding to the holes on the end face of the bottom plate of the shell 3, wherein the holes are uniformly distributed in the circumferential direction and are used for installing screws to connect with the shell 3, and the rest of the holes are respectively used as through holes for penetrating the first heating element 6, the temperature sensor 7 and the second heating element 8.
Specifically, the backing ring 10 is arranged on the end face of the hub core of the hub 13 and is used for supporting the electric heater; the cross section of the backing ring 10 is rectangular, and the inner diameter of the backing ring 10 is slightly smaller than the inner diameter of the hub core port of the hub 13.
Specifically, the baffle 11 is used for plugging the inner cavity of the hub bearing hole and supporting the hub, the baffle 11 is a disc piece, the center of the upper end of the disc is a hollow convex round table, and the round table is inserted into the center hole of the hub spoke plate.
Specifically, a packing 12 is placed on the outer end of the sheath 9 to seal the outer end of the sheath 9.
In summary, the application provides an aircraft wheel bearing outer ring assembly method and a hub heating device, wherein the heating device is used for simultaneously heating the inner wall and the outer wall of a hub bearing hole, and the local heating is uniform and rapid, so that the operation is light. The heating device is adopted to heat the hub locally and properly, so that the thermal expansion of the hub bearing hole is increased, meanwhile, the bearing outer ring is properly ice-cooled and contracted to be reduced, then the bearing outer ring is smoothly put into the hub bearing hole, and when necessary, the end face of the cold bearing outer ring can be pushed by the pressing tool to be pressed in place, so that the operation of entering and exiting a high-temperature box of a large hub is canceled, the whole hub is not required to be comprehensively heated, the local heating temperature of the hub is limited, the proper ice-cooled treatment of the bearing outer ring is realized, the mechanical properties of the hub and the bearing are not damaged in the heating and ice-cooled working procedures, thereby realizing the purposes of environmental protection and energy conservation, reducing the labor intensity of operators, ensuring the smooth assembly of the interference fit bearing outer ring and keeping the surface strengthening of the hub unaffected.
The process method and the heating device have reasonable design, are simple and easy to operate, effectively overcome the defects of large energy consumption, high operation strength and inapplicability to limit the heating temperature of the machine wheel in the prior art, reduce the energy consumption by about 65 percent, greatly reduce the operation strength, ensure that the heating and ice-cold assembly can not bring harmful effects to the machine wheel and the bearing, realize quick and smooth assembly operation, realize smooth assembly in place at one time, and have obvious technical, economic benefit, social and military benefits.
Drawings
FIG. 1 is a flow chart of an aircraft wheel bearing outer ring assembly method provided by the invention;
FIG. 2 is a cross-sectional view of the hub heating device provided by the present invention mounted on a hub;
FIG. 3 is an external view of an electric heater of the hub heating device provided by the invention;
FIG. 4 is a top view of an electric heater of the hub heating device provided by the present invention;
FIG. 5 is a cross-sectional view of a housing provided by the present invention;
FIG. 6 is a top view of a housing provided by the present invention;
fig. 7 is a bottom view of the housing provided by the present invention.
In the figure: 1-a handle; 2-cover plate; 3-a housing; 4-heat insulation board; 5-a temperature controller; 6-a first heating element; 7-a temperature sensor; 8-a second heating element; 9-a sheath; 10-backing rings; 11-a baffle; 12-packing; 13-a hub; 14-an inner bearing bore; 15-an outer bearing hole; 16-an electrical outlet; 17-temperature/time setting button pad.
Detailed Description
The invention provides an aircraft wheel bearing outer ring assembly method and a wheel hub heating device, which solve the technical problems that a heating device is adopted to locally heat a wheel hub, so that the thermal expansion of a wheel hub bearing hole is increased, meanwhile, the outer ring of the bearing is subjected to ice-cold treatment, so that the outer ring of the bearing is subjected to cold shrinkage to be reduced, then the outer ring of the bearing is put into a wheel hub bearing hole or put into a wheel hub bearing hole opening and lightly pressed into the bottom of the wheel hub bearing hole, thereby realizing the purposes of environmental protection and energy saving, reducing the labor intensity of operators, ensuring the smooth assembly of the outer ring of the bearing in interference fit and keeping the surface strengthening of the wheel hub unaffected.
Example 1
As shown in fig. 1, the invention provides a method for assembling an outer ring of an aircraft wheel bearing, which comprises the following steps:
step 1: cleaning the surfaces of the hub and the bearing outer ring part;
in practical application, clean wheel hub and bearing outer ring part surface specifically includes: checking for dust, oil stains and damage; cleaning and inspection are as per the prior art. In the embodiment, the parts of the hub surface, the hub bearing hole and the bearing outer ring are cleaned by decontamination twice, the surfaces of the hub surface, the hub bearing hole and the bearing outer ring are wiped once by cotton yarn dipped with No. 120 gasoline, and the surfaces of the parts are visually inspected by wiping the surfaces of the hub bearing hole and the bearing outer ring once by cotton yarn dipped with industrial alcohol.
Step 2: the inner bearing hole 14 and the outer bearing hole 15 of the hub 13 are subjected to heating treatment by a preset hub heating device;
specifically, the inner bearing hole 14 and the outer bearing hole 15 of the hub 13 are heated by a preset hub heating device, including: the hub heating device is arranged on the end face of the hub core of the hub, and is powered on to heat the position where the hub bearing hole is located.
Specifically, the heating temperature range for heating the hub bearing hole of the hub is 90-125 ℃; the heat preservation time range is as follows: 45-65 min.
For example, the heating temperature: 100 ℃ and the heat preservation time is as follows: 50mi n.
Step 3: the bearing outer ring was ice-cooled.
Specifically, ice-cooling treatment is performed on the outer ring of the bearing, including: and placing the bearing outer ring into a low-temperature box, and cooling the bearing outer ring with ice.
Specifically, the ice-cooling temperature range for ice-cooling the bearing outer ring is: -60 to-90 ℃; the heat preservation time range is as follows: 30-45 min.
In practice, the cryostat is known from the prior art. In the embodiment, a low-temperature box using dry ice as a refrigerant is adopted, and the ice-cooling temperature is as follows: -70 ℃, incubation time: 30mi n.
Step 4: the ice-cooled bearing outer ring is assembled on the heated hub.
Specifically, the power supply is disconnected, the heating device is taken down from the hub, and the outer ring of the cold bearing is rapidly placed into the bottom of the bearing hole of the hot hub. The assembly sequence is that the inner bearing hole bearing outer ring of the hub is assembled firstly, and the hub is turned over and then the outer bearing hole bearing outer ring of the hub is assembled. If necessary, the cold bearing outer ring end face can be pushed with a presser to press fit in place. The assembly process parameters are as follows:
in practical application, the hub is powered off and waits for the dress time: < 2.5 min;
the time for unloading the outer ring of the bearing to be assembled is as follows: < 1.5 min.
As shown in fig. 2, a cross-sectional view of the hub heating device provided by the invention mounted on a hub is shown.
In order to maintain the coldness of the bearing, the bearing is preferably protected from heat during transfer by a heat-insulating article, such as a heat-insulating sleeve or a heat-insulating box, and is removed during assembly.
In this embodiment, the heating device is removed, the hub inner bearing hole bearing outer ring is assembled first, and the hub is turned over and then the hub outer bearing hole bearing outer ring is assembled.
Step 5: and checking the assembled hub.
After the room temperature is restored, the bearing outer ring is checked to be assembled in place, looseness is avoided, and the gap between the end face of the bearing outer ring and the bottom of the hub bearing hole meets the technical requirements. The examination is as per the prior art. In the embodiment, a 0.05mm thick plug gauge is adopted to check the hole bottom gap, and the plugging failure is qualified.
Example two
As shown in fig. 2, the present invention provides a hub heating device including an electric heater including a handle 1, a cover plate 2, a housing 3, a heat insulating plate 4, a temperature controller 5, a first heating element 6, a second heating element 8, a temperature sensor 7, a sheath 9 and an electrical outlet 16, a temperature/time setting button plate 17; the accessory comprises a backing ring 10, a baffle 11 and a filler 12, wherein:
the housing 3 is an assembly substrate. The shell 3 is a cylinder with one end closed, and the temperature controller 5 is arranged in the inner cavity of the cylinder; the bottom plate of the inner cavity of the cylinder body is provided with a heating element and a temperature sensor mounting hole, wherein the middle hole is provided with a first heating element 6, the outer hole close to the cylinder wall is provided with a second heating element 8, and a hole between the middle hole and the outer hole is provided with a temperature sensor 7; the outer circumferential surface of the cylinder body is provided with an electrical socket 16; threaded holes are uniformly distributed on the circumferential direction of the upper end surface of the cylinder body and are used for fixing the cover plate 2; threaded holes are uniformly distributed on the lower end surface of the cylinder body and are used for fixing the heat insulation plate 4; the temperature controller 5 is electrically connected with the electrical socket 16, the first heating element 6 and the second heating element 8; the temperature controller 5 adopts the prior art;
the handle 1 is fixedly connected with the cover plate 2. The handle 1 is a bar with a rectangular cross section and with two legs which are fixedly connected to the cover plate 2 according to the prior art. The embodiment is connected by screws;
the cover plate 2 is fixedly connected with the shell 3. The cover plate 2 is a disc piece, holes are uniformly distributed in the circumferential direction of the disc, the center line of the holes is coaxial with the center line of the threaded holes of the shell 3, and the holes are used for installing screws to connect the shell 3; a temperature/time setting button plate 17 is arranged on the cover plate 2; the temperature/time setting button plate 17 is electrically connected with the temperature controller 5; the temperature/time setting button adopts the prior art;
the heat insulation board 4 and the sheath 9 are fixedly connected with the shell 3. The heat insulation plate 4 is a disc piece, the disc is provided with holes corresponding to the holes on the end face of the bottom plate of the shell 3, as shown in fig. 5, 6 and 7, wherein the holes are uniformly distributed circumferentially and are used for installing screws to connect the shell 3, and the rest of the holes are respectively used as through holes for passing through the first heating element 6, the temperature sensor 7 and the second heating element 8;
the sheath 9 is a cylinder with a flange at one end, holes are uniformly distributed in the circumferential direction of the flange, the center line of the holes is coaxial with the screw holes at the lower end surface of the shell 3 and the center line of the circumferential holes of the heat insulation plate 4, and the sheath 9 and the heat insulation plate 4 are fixed with the bottom plate of the shell 3 by mounting screws;
the temperature sensor 7 is arranged in the middle of the bottom plate of the inner cavity of the shell 3; the temperature sensor 7 adopts the prior art, and the embodiment is a thermocouple probe; the temperature sensor 7 is electrically connected with the temperature controller 5;
as shown in fig. 3 and 4, the first heating element 6 is a U-shaped piece and is placed in the middle of the bottom plate of the inner cavity of the shell 3, two lead ends penetrate through the heat insulation plate 4 and are fixed with the bottom plate of the shell 3, in this embodiment, threaded nuts are used for connection, the other end of the lead ends extend into the middle of the inner cavity of the bearing hole of the hub 13, and after being electrified, the inner cavity of the hub core of the hub 13 is heated, so that the inner walls of the inner bearing hole 14 and the outer bearing hole 15 are heated; the second heating element 8 is a solenoid-shaped piece and is arranged near the periphery of the bottom plate of the inner cavity of the shell 3, two lead ends penetrate through the heat insulation plate 4 and are fixed with the bottom plate of the shell 3, the embodiment adopts threaded nuts for connection, the solenoid part is sleeved around the hub 13 hub core and extends into the hub 13 spoke plate, and after being electrified, the outer wall of the hub 13 hub core is heated, so that the outer walls of the inner bearing hole 14 and the outer bearing hole 15 are heated; the first heating element 6 and the second heating element 8 are both of the prior art; the embodiment is an electric heating tube with a stainless steel tube armored nichrome spiral resistance wire magnesia filled with silica gel for sealing;
the backing ring 10 is arranged on the end face of the hub core of the hub 13 and is used for supporting the electric heater; the cross section of the backing ring 10 is rectangular, the inner diameter of the backing ring 10 is slightly smaller than the inner diameter of the hub 13 hub core port, preferably smaller than 5-10mm, and the inner diameter of the backing ring 10 is 6mm smaller than the inner diameter of the hub 13 hub core port in the embodiment;
the baffle 11 is used for blocking the inner cavity of the bearing hole of the hub and supporting the hub. The baffle 11 is a disc piece, the center of the upper end of the disc is a hollow convex round table, and the round table is inserted into a central hole of the hub spoke plate;
a packing 12 is placed at the outer end of the sheath 9 to seal the outer end of the sheath 9.
The handle 1, the cover plate 2, the shell 3, the heat insulation plate 4, the sheath 9, the baffle 11 and the packing 12 are all made of nonmetallic materials, and the backing ring 10 is made of metallic materials. In the embodiment, the handle 1, the cover plate 2, the shell 3 and the baffle 11 are made of phenolic plastics, the heat insulation plate 4 is made of asbestos plates, the sheath 9 is made of asbestos composite materials, the filler 12 is made of asbestos ropes, and the backing ring 10 is made of aluminum alloy.
The using method of the heating device is as follows: 1. placing the baffle 11 on the floor, wherein the notch of the baffle 11 is upward; 2. placing a hub 13 on the baffle 11, inserting a hub spoke plate center hole into a round table of the baffle 11, and abutting the hub spoke plate end face against the baffle 11 end face; 3. placing the backing ring 10 on the end face of the hub core of the hub 13; 4. holding the handle 1, placing an electric heater on the backing ring 10, enabling the first heating element 6 and the temperature controller 5 to be inserted into the inner cavity of the hub 13, and sleeving the second heating element 8 around the hub 13; 5. filling filler 12 into a gap between the outer end of the electric heater sheath 9 and the spoke plate of the hub 13, so that a cavity enclosed by the sheath 9 is closed; 6. setting the temperature and time, and switching on the power supply to heat.
Compared with the prior art, the electric energy is saved by 65% without using a high-temperature box, the electric energy is smoothly assembled in place at one time, the operation strength is light, the efficiency is high, and the assembly quality is improved.
Claims (5)
1. The hub heating device is characterized by comprising an electric heater and accessories, wherein the electric heater comprises a handle (1), a cover plate (2), a shell (3), a heat insulation plate (4), a temperature controller (5), a first heating element (6), a second heating element (8), a temperature sensor (7), a sheath (9) and an electrical socket (16), and a temperature/time setting button plate (17); the accessory comprises a backing ring (10), a baffle (11) and a filler (12), wherein:
the shell (3) is an assembly substrate, the shell (3) is a cylinder with one end closed, a bottom plate of an inner cavity of the cylinder of the shell (3) is provided with a middle hole, an outer hole and a temperature sensor mounting hole, the middle hole is provided with a first heating element (6), the outer hole close to the cylinder wall is provided with a second heating element (8), the temperature sensor mounting hole is provided with a temperature sensor (7), and the temperature controller (5) is arranged in the inner cavity of the cylinder of the shell (3); an electrical socket (16) is arranged on the outer circle surface of the cylinder body of the shell (3); threaded holes are uniformly distributed on the circumferential direction of the upper end face of the cylinder body of the shell (3) and used for fixing the cover plate (2); threaded holes are uniformly distributed on the lower end surface of the cylinder body of the shell (3) and are used for fixing the heat insulation plate (4); the temperature controller (5) is electrically connected with the electrical socket (16), the first heating element (6) and the second heating element (8);
the sheath (9) is a cylinder with a flange at one end, holes are uniformly distributed in the circumferential direction of the flange, the center line of the holes is coaxial with the threaded holes on the lower end surface of the shell (3) and the center line of the circumferential holes of the heat insulation plate (4), and the sheath (9) and the heat insulation plate (4) are fixed with the bottom plate of the shell (3) by mounting screws;
the temperature sensor (7) is arranged in the middle of the bottom plate of the inner cavity of the shell (3); the temperature sensor (7) is electrically connected with the temperature controller (5);
the first heating element (6) is a U-shaped piece, one end of the first heating element is arranged in the middle of the bottom plate of the inner cavity of the shell (3), two lead ends penetrate through the heat insulation plate (4) and are fixed with the bottom plate of the shell (3), the other end of the first heating element stretches into the middle of the inner cavity of the bearing hole of the hub (13), and the inner cavity of the hub core of the hub (13) is heated after being electrified, so that the inner walls of the inner bearing hole (14) and the outer bearing hole (15) are heated; the second heating element (8) is a solenoid-shaped piece and is arranged on the periphery of the bottom plate of the inner cavity of the shell (3), two lead ends penetrate through the heat insulation plate (4) and are fixed with the bottom plate of the shell (3), the solenoid part is sleeved around the hub (13) hub core and stretches into the hub (13) spoke plate, and after being electrified, the outer wall of the hub (13) hub core is heated, so that the outer walls of the inner bearing hole (14) and the outer bearing hole (15) are heated.
2. The hub heating device according to claim 1, characterized in that the handle (1) is fixedly connected to the cover plate (2), the handle (1) is a bar with a rectangular cross section and two legs, which are fixedly connected to the cover plate (2);
the cover plate (2) is fixedly connected with the shell (3), the cover plate (2) is a disc piece, holes are uniformly distributed in the circumferential direction of the cover plate (2), the center line of the holes is coaxial with the center line of a threaded hole of the shell (3), and the holes are used for installing screws to connect the shell (3); a temperature/time setting button plate (17) is arranged on the cover plate (2); the temperature/time setting button plate (17) is electrically connected with the temperature controller (5);
the heat insulating plate (4) and the sheath (9) are fixedly connected with the shell (3), the heat insulating plate (4) is a disc piece, holes corresponding to the holes on the end face of the bottom plate of the shell (3) are formed in the disc piece, wherein the holes are uniformly distributed in the circumferential direction and used for installing screws to connect the shell (3), and the rest holes are respectively used as through holes penetrating the first heating element (6), the temperature sensor (7) and the second heating element (8).
3. Hub heating device according to claim 1, characterized in that a backing ring (10) is placed on the hub (13) core end face for supporting the electric heater; the cross section of the backing ring (10) is rectangular, and the inner diameter of the backing ring (10) is slightly smaller than the inner diameter of the hub core port of the hub (13).
4. A hub heating arrangement according to claim 1, characterized in that the baffle (11) is arranged to close the hub bearing hole and to support the hub, the baffle (11) being a disc member with a hollow protruding boss in the centre of the upper end of the disc, the boss being inserted into the hub web centre hole.
5. Hub heating device according to claim 1, characterized in that a packing (12) is placed at the outer end of the jacket (9) for sealing the outer end of the jacket (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328029.7A CN114603306B (en) | 2022-03-31 | 2022-03-31 | Method for assembling outer ring of aircraft wheel bearing and hub heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328029.7A CN114603306B (en) | 2022-03-31 | 2022-03-31 | Method for assembling outer ring of aircraft wheel bearing and hub heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114603306A CN114603306A (en) | 2022-06-10 |
| CN114603306B true CN114603306B (en) | 2023-08-04 |
Family
ID=81867401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210328029.7A Active CN114603306B (en) | 2022-03-31 | 2022-03-31 | Method for assembling outer ring of aircraft wheel bearing and hub heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114603306B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE786350A (en) * | 1971-08-02 | 1973-01-17 | Michelin & Cie | DEVICE FOR CARVING THE TIRE ENVELOPES |
| JP2003165032A (en) * | 2001-11-29 | 2003-06-10 | Sankyo Seiki Mfg Co Ltd | Fixing method by shrink fit |
| JPWO2004035326A1 (en) * | 2002-10-18 | 2006-02-09 | 日本精工株式会社 | Wheel bearing unit and manufacturing method thereof |
| JP2010242781A (en) * | 2009-04-01 | 2010-10-28 | Ntn Corp | Assembling method for wheel bearing device |
| JP2012197043A (en) * | 2011-03-22 | 2012-10-18 | Ntn Corp | Bearing device for wheel, and method of manufacturing same |
| CN202763425U (en) * | 2012-09-21 | 2013-03-06 | 山东翔宇航空技术服务有限责任公司 | Installing device for airplane wheel bearing cup |
| CN105952802A (en) * | 2016-06-16 | 2016-09-21 | 山东蓬翔汽车有限公司 | Non-maintenance hub unit assembly with brake drum |
| CN107953721A (en) * | 2017-11-16 | 2018-04-24 | 西安航空制动科技有限公司 | The Inspection Aircraft Wheels that a kind of disc is combined with hub core |
| US20210301877A1 (en) * | 2020-03-24 | 2021-09-30 | Honeywell International Inc. | Wheel bearing hub heater storage device |
-
2022
- 2022-03-31 CN CN202210328029.7A patent/CN114603306B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114603306A (en) | 2022-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104832774B (en) | Heating device for protecting bearing of wind driven generator and bearing system | |
| CN114603306B (en) | Method for assembling outer ring of aircraft wheel bearing and hub heating device | |
| JP2019016771A5 (en) | ||
| US2045773A (en) | Heating furnace | |
| CN102497680B (en) | Heating device of lining | |
| CN103267636B (en) | For the heating arrangement of aero-engine spindle thermal state strength test | |
| CN105246178A (en) | Special electrical leading device for electrical heater and processing technology of special electrical leading device | |
| CN203397229U (en) | High and low temperature test box | |
| CN105834615B (en) | A kind of hand prevents the device of welding necking down | |
| CN211013786U (en) | Simulation sunshine GIS casing thermal stress temperature cycle loading test bench | |
| CN102489934B (en) | Method for assembling extra-long bushings | |
| CN108826840A (en) | A kind of machining machine components degreaser | |
| CN210856217U (en) | High-temperature stress relief tool for circular seam of cylinder | |
| CN201680929U (en) | Field core type calibration furnace for oil temperature indicator | |
| CN210267732U (en) | Heating mirror roller | |
| CN207066218U (en) | A kind of anti-end socket preheating wheel | |
| CN208230180U (en) | A kind of Teat pump boiler deposited zinc equipment of surface high efficiency | |
| CN103331184B (en) | High-low temperature test chamber | |
| CN213396008U (en) | Low-temperature thermostat adopting adsorption refrigerator | |
| CN203389656U (en) | High-low temperature test chamber | |
| CN216180198U (en) | Positioning and compressing device for hot sleeve at transmission end of rotor shaft of traction motor | |
| CN205933942U (en) | Annealing axle assembly | |
| CN214850338U (en) | Generator enclosed bus box body connecting structure | |
| CN200989731Y (en) | Integrated high-temperature furnace | |
| CN2921525Y (en) | Non-resistance rotary joint compensator |
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 |