CN209419901U - A kind of skeleton symbol bearing heating device - Google Patents

Abstract

The utility model belongs to bearing heating technical field, specially a kind of skeleton symbol bearing heating device, solve background technique middle (center) bearing heating means there are the drawbacks of, the device includes iron core, contactor and temperature controller, iron core includes upper and lower part, and upper and lower part is docked in opposite directions forms square shape shape, the primary side winding coil of iron core, the secondary side of iron core, which penetrates, is heated bearing, and the both ends of coil connect external power supply；The both ends of temperature controller are connected in parallel to the both ends of coil, and contactor is connected serially in the wiring of temperature controller and coil, and the length of contactor is opened contact and is arranged in the wiring of coil and external power supply.The utility model is easy to operate, saves manpower labour；Heating speed is fast, and the temperature of heating bearing can be got hold of by temperature controller；Homogeneous heating and safe and reliable, will not cause bearing to fade or surface indentation equivalent damage；Utilization rate of electrical is high, is not in open fire, zero defects hidden danger, clean and environmental protection is pollution-free, improves working environment.

Description

A kind of skeleton symbol bearing heating device

Technical field

The utility model belongs to bearing heating technical field, specially a kind of skeleton symbol bearing heating device.

Background technique

Currently, in process of production, the motor to production run equipment periodically or non-periodically carry out necessary maintenance, Maintenance and maintenance work.During repairing all kinds of motors, installation bearing is an essential job, Required installing force is increased rapidly with the increase of bearing size when installing bearing.Due to the requirement of installing force, biggish bearing It is not easy to shift on axis or is pushed into bearing block, therefore, bearing or annular work piece needs to heat in a pre-installation.

Bearing heating often with there are two ways to: one is directly heated with acetylene-oxygen to bearing；Another is pair Small size bearing is heated using oil immersion, reaches thermal expansion, excessive bearing bore diameter, to assemble.Both methods is tieed up in long-term equipment It is widely used in repairing, substantially meets and solve maintenance of equipment middle (center) bearing assembly problem.But both methods is difficult to protect Whether the temperature value for demonstrate,proving bearing heating surface area during heating is uniform.Because the process of traditional acetylene-oxygen heating heating is only By rule of thumb, the bearing temperature being heated is added to how many degree and properly is difficult to grasp, and heating is uneven, and bearing deformation is caused to damage.Temperature Height is spent, annealing can be generated to bearing, reduce the mechanical performance of bearing；Temperature is too low, and thermal expansion value is inadequate, it is difficult to assemble.? In motor repair, whether all time-consuming and laborious using acetylene-oxygen or oil immersion heating, working strength is quite big, to responsible repairing Staff for, sometimes because being heated not enough to bearing, so that bearing dress is less than on correct position, haveing no alternative but be forced to take off Refitting, so that the lubricity for increasing labor intensity, and being easily destroyed bearing itself, easily causes accident.

Summary of the invention

Utility model aims to solve above-mentioned bearing heating method there are the drawbacks of, provide a kind of skeleton symbol bearing Heating device.

The technical scheme in the invention for solving the technical problem is: a kind of skeleton symbol bearing heating device, including iron core, connects Tentaculum and temperature controller, the iron core include upper and lower part, and shape is docked in the end on the top and the end of lower part in opposite directions At square shape shape, the primary side of the iron core is arranged with coil, and the secondary side of the iron core, which penetrates, to be heated in bearing, the line The both ends of circle are connected to external power supply；The both ends of the temperature controller are connected in parallel to the both ends of coil, and the contactor is connected serially to In the wiring of temperature controller and coil, the length of the contactor is opened contact and is arranged in the wiring of coil and external power supply, institute Stating temperature controller includes temperature probe and reset switch, and the temperature probe is set in the inner ring for being heated bearing.

Preferably, fuse is provided between the both ends of the coil and the external power supply.Fuse can protect electricity Road.

The beneficial effects of the utility model are: it is easy to use, it is easy to operate, it can open or stop at any time, and without appointing What is preheated, and saves manpower, labour, work efficiency is high；Electromagnetic induction heating speed is very fast, can be well by temperature controller The temperature of heating bearing is held, when bearing temperature reaches scheduled temperature, temperature controller automatically cuts off host power supply, stops Heating；Homogeneous heating will not explode during heating, and colour fading or surface indentation equivalent damage will not be caused to bearing, is added Thermal process is safe and reliable；Utilization rate of electrical is high, is not in open fire, zero defects hidden danger, clean and environmental protection is pollution-free, improves work Environment.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of skeleton symbol bearing heating device described in the utility model.

In figure: 1- contactor；2- temperature controller；The top 3-；The lower part 4-；5- coil；6- is heated bearing；7- thermometric is visited Head；8- reset switch；9- fuse；10- lead screw.

Specific embodiment

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be practical to this Novel technical solution is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, Rather than whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness Obtained every other embodiment under the premise of labour, belongs to the range that the utility model is protected.

Referring to attached drawing 1, now a kind of skeleton symbol bearing heating device provided by the utility model is illustrated.

A kind of skeleton symbol bearing heating device, including iron core, contactor 1 and temperature controller 2, the iron core include top 3 With lower part 4, the end on the top 3 and the end of lower part 4 dock form square shape shape in opposite directions, the primary side winding of the iron core There is coil 5, the secondary side of the iron core, which penetrates, to be heated in bearing 6, and the both ends of the coil 5 are connected to external power supply；It is described The both ends of temperature controller 2 are connected in parallel to the both ends of coil 5, and the contactor 1 is connected serially to the wiring of temperature controller 2 Yu coil 5 On, the length of the contactor 1 is opened contact and is arranged in the wiring of coil 5 and external power supply, and the temperature controller 2 includes thermometric Probe 7 and reset switch 8, the temperature probe 7 are set in the inner ring for being heated bearing 6.Alternating current passes through side line of iron core Circle 5 generates the magnetic flux of variation, is then passed to and is heated bearing 6, and the magnetic flux of variation generates short-circuit electricity in being heated bearing 6 Stream, is heated bearing 6 and begins to warm up.

A kind of working principle of skeleton symbol bearing heating device described in the utility model: first separating top 3 and lower part 4, 6 sets of the bearing secondary sides in the iron core will be heated, square shape shape then is formed at top 3 and the docking of lower part 4, it is to be fixed good Later, the temperature probe 7 of temperature controller 2 is placed through to the inner ring for being heated bearing 6, then connects external power supply, contactor 1 Electrification, 1 normally opened contact KM of contactor movement, is become being closed from normally opened, and heater circuit is connected, and alternating current passes through iron core primary side Coil 5 generates the magnetic flux of variation, then transmits iron core secondary side and is heated on bearing 6, the magnetic flux of variation is being heated bearing 6 Middle generation short circuit current, the impedance by being heated bearing 6 itself generate heat, are heated to be heated bearing 6.When thermometric is visited First 7 detect be heated bearing 6 be heated to temperature controller 2 setting temperature when, temperature controller 2 automatically control contactor 1 Power cut-off, 1 coil losing electricity of contactor, 1 normally opened contact KM of contactor are restored to normally opened, 5 place heater circuit of coil by being closed It disconnects, is heated bearing 6 and stops heating.Staff, which removes warmed-up bearing and then put well, next is heated axis 6 are held, after fixing top 3 and lower part 4, presses the reset switch 8 of temperature controller 2, contactor 1 charges again, the present apparatus Next bearing 6 that is heated can be heated, finally after all bearing heatings finish, external power supply is cut off, Thoroughly power-off.

Further, as a kind of a kind of specific embodiment of skeleton symbol bearing heating device described in the utility model, institute It states and is provided with fuse 9 between the both ends of coil 5 and the external power supply.Fuse 9 can protect circuit.

It further, should as a kind of a kind of specific embodiment of skeleton symbol bearing heating device described in the utility model Device further includes the lead screw 10 of fixed setting, and the top 3 is connected with the nut of the lead screw 10, and the fixation of lower part 4 is set It sets.The lower part 4 is fixed, and the top 3 is connect with the nut of lead screw 10, and the top 3 can be living up and down with nut It is dynamic, and the lead screw 10 also can be by the fixed fastening in top 3 and lower part 4.

Further, as a kind of a kind of specific embodiment of skeleton symbol bearing heating device described in the utility model, institute The temperature for stating temperature controller 2 is set in 90 DEG C.The general temperature of bearing heating is 80 DEG C -100 DEG C, this insufficient temperature model Thermal expansion cannot not enough be reached by enclosing bearing heating, be heat-treated if being equivalent to after heating overtemperature to bearing again, it is original to change bearing Structure organization reduces the hardness of bearing and precision, loses original hardness and wearability；Bearing can change colour if overtemperature is serious Black, bearing is scrapped, so temperature is set in 90 DEG C just.

Further, as a kind of a kind of specific embodiment of skeleton symbol bearing heating device described in the utility model, institute Stating temperature probe 7 is temperature sensor.

Further, as a kind of a kind of specific embodiment of skeleton symbol bearing heating device described in the utility model, institute Stating external power supply is 380V.380V accelerates the speed of heating bearing compared with 220V AC energy.

Iron core described in the present embodiment is waste and old miniature welding machine internal transformer iron core, and waste utilization meets environmental protection, section The about energy, low-carbon requirement.

The embodiments of the present invention is explained in detail above in conjunction with attached drawing, but the utility model is not limited to Above embodiment can also not depart from the utility model within the knowledge of a person skilled in the art It is made a variety of changes under the premise of objective.

Claims (6)

1. a kind of skeleton symbol bearing heating device, which is characterized in that described including iron core, contactor (1) and temperature controller (2) Iron core includes top (3) and lower part (4), and the end of the top (3) and the end of lower part (4) dock form square shape in opposite directions Shape, the primary side of the iron core are arranged with coil (5), and the secondary side of the iron core, which penetrates, to be heated in bearing (6), the coil (5) both ends are connected to external power supply；The both ends of the temperature controller (2) are connected in parallel to the both ends of coil (5), the contactor (1) it is connected serially in the wiring of temperature controller (2) and coil (5), the length of the contactor (1) is opened contact and is arranged in coil (5) In the wiring of external power supply, the temperature controller (2) includes temperature probe (7) and reset switch (8), the temperature probe (7) it is arranged in the inner ring for being heated bearing (6).

2. a kind of skeleton symbol bearing heating device according to claim 1, which is characterized in that the both ends of the coil (5) with Fuse (9) are provided between the external power supply.

3. a kind of skeleton symbol bearing heating device according to claim 1 or 2, which is characterized in that the device further includes fixing The lead screw (10) of setting, the top (3) are connected with the nut of the lead screw (10), lower part (4) fixed setting.

4. a kind of skeleton symbol bearing heating device according to claim 3, which is characterized in that the temperature controller (2) Temperature is set in 90 DEG C.

5. a kind of skeleton symbol bearing heating device according to claim 4, which is characterized in that the temperature probe (7) is temperature Spend sensor.

6. a kind of skeleton symbol bearing heating device according to claim 5, which is characterized in that the external power supply is 380V.