Installation of induction heating for installation and dismantling of assemblies consisting of the parts, the mating hot landing

 

The invention relates to the technical equipment for Assembly and disassembly of the units of machines and mechanisms, the details of which are mated hot landing. The technical result is the reduction of production space and complexity of the process. Introduced into the facility block-locked loop output frequency of the Converter, uses a set of interchangeable coils, number of turns of the winding of each inductor selected from the conditions of their work in the interval-locked loop resonant frequency, which provides the desired heating rate for the entire range of parts that make up the site, for a fixed value of the capacitance of the capacitor of the resonant circuit, the secondary winding of the matching transformer is made of a partitioned, with the number of sections corresponding to the number of groups of inductors, each of the sections covers the range of rated power output at a fixed interval frequency-locked loop, a fixed value of the capacitance of the resonant circuit and a predetermined value of the output voltage. The number of groups of coils or sections of the secondary winding of the matching transformer is determined by the ratio of the interval of values of the power required to ensure the ass is Oh group of inductors. 1 C.p. f-crystals, 3 ill.

The invention relates to the technical equipment for Assembly and disassembly of the units of machines and mechanisms, the details of which are mated hot landing, and can be used for Assembly and disassembly of complex mechanical assemblies consisting of a large number of parts, planted a hot landing with different tightness, such as gear assemblies. The items that make up this site, have a wide range of sizes, weights and configurations, and, accordingly, required a wide range of capacities allocated to the various parts to provide the desired rate of heating during their removal or planting.

The known installation for installation and dismantling of sites by using the induction heating devices, for example, the description of the patent of the Russian Federation 2119421, publ. 1998.09.27, 23 P 19/02, the DEVICE FOR ASSEMBLING AND DISASSEMBLING of the PARTS ON a HOT LANDING; the description of the patent of the Russian Federation 2121420, publ. 1998.11.10. 23 P 19/02, the METHOD of INDUCTION REPRESSIVE; the description of the patent of the Russian Federation 2099168, publ. 1997.12.20, 23 P 19/02, STAND FOR the ASSEMBLY of the NODES OF LARGE PARTS selected for the prototype as the most similar in essential features. The disadvantage of these devices is the inability to handle the aircraft which is designed for the used inductor, and if you need to handle complex assemblies that require the removal or planting of a large number of parts, significantly different sizes and allocated capacity, will have to have for each part of the circuit that supplies power and control to the appropriate inducer.

The objective of the invention - creation-equipped working place, occupying a small production area, ensuring a high quality of work on mounting and Dismounting of the node with the minimum energy and time costs, while reducing the complexity of the process.

The problem is solved in that in an installation for heating, containing a frequency Converter connected to the matching transformer having primary and secondary windings, with the resonant circuit included in the latter formed by the capacitor and the corresponding inductor in the shape corresponding to the shape of the heated them to the surface, put the block locked loop output frequency of the Converter, its inputs connected to the voltage detector, installed in parallel with the winding of the matching transformer, and a current sensor installed in the circuit of the primary winding of the matching transformer, and the output from the input uses a set of interchangeable inductors, each of which is made in the form of electricity and heat-insulating casing and an electric winding, and the number of turns of the winding of each inductor is selected from the conditions of their work in the interval-locked loop resonant frequency, which provides the desired heating rate for the entire range of parts that make up the site, for a fixed value of the capacitance of the capacitor of the resonant circuit, the secondary winding of the matching transformer is made of a partitioned, with the number of sections corresponding to the number of groups of inductors, each section covers a specific range rated power output at a fixed interval frequency-locked loop, a fixed value of the capacitance of the resonant circuit and a predetermined value of the output voltage. The number of groups of coils or sections of the secondary winding of the matching transformer is determined by the ratio of the interval of values of the power required to achieve the specified heating rate of the entire range of parts that node to the output range corresponding to a separate group of inductors.

The main technical advantage of the present invention in comparison with the prototype is the ability for one rabochei range of components of different weight and size, mating hot landing, by quick and easy changing of the inductors, which provides the desired heating rate of the respective items.

This is because each group of coils corresponds to an interval of the power Converter at a given fixed frequency locked loop, a fixed value of the capacitance of the resonant capacitor and for a given value of the output voltage. Connecting the inductors to the corresponding section of the secondary winding of the transformer, the resulting device is ready for operation to heat the part, without the prior works on flexibility and adjustment. Using this approach it is possible to unify a number of inductors in power consumption depending on the magnitude of the output voltage of the frequency Converter.

Further, the invention is illustrated in Fig.1-3, which show: Fig.1 - scheme of induction heating according to this invention; Fig.2 is a graph showing the change of the allocated inductor power depending on the resonant frequency of the circuit with a fixed level output voltage; Fig. 3 is a specific example of implementation of the inductor for heating the bearing unit small W is, ostashek of the details of the mating hot landing, consists of a transducer frequency inverter type 1 matching transformer having a primary winding 2 and secondary winding 3 connected with the resonant circuit formed by the fixed capacity of 4, and one of the inductors selected from groups I, II, III, . . . N. In each group United inductors with a certain interval consumption nominal power, which corresponds to a certain section of the secondary winding of the matching transformer. The apparatus comprises a block-locked loop resonant frequency 7, the inputs of which is connected to the voltage detector 5 and the current sensor 6, the output unit 7 is connected to the input unit generating control pulses 8, the output of which is connected to the frequency Converter 1. The number of replacement coils in the set is determined by the range of components that make up the site, subject to mounting or Dismounting. Each inductor 10 is made in the form of heat and electrical insulating frame 11 corresponding to the shape of the heated part 12, and an electric winding 13, the number of turns of which are selected from the conditions of their work in the same range of the resonance frequency and feed them a certain value of voltage for ensuring that the and which presents a graph of power inductors depending on the self-inductance of each inductor, consequently, the resonant frequency at which the Converter is configured using the phase-locked loop frequency for different values of output voltage. Self-inductance of all of the inductors are set in a certain interval of values that, in combination with the fixed capacitance of the resonant capacitor are determined by the specified ranges autoposting output frequency f1-f2transducer at resonance, and all inductors are divided into groups corresponding to the intervals of power, for example group I contains inductors with output range (R1-R2), group II - inducers intervals (P2-R3and so on up to group N. Each of the groups of the coils corresponds to the section of the secondary winding of the matching transformer 3A, 3b, etc.

The device operates as follows: the inductor 10, corresponding in the form of certain items, is located on the surface and connects to the corresponding section of the secondary winding of the matching transformer, then powered on and starts heating parts. With tension transducer 5 and the current sensor 6 receives signals in the unit phase-locked loop 7, where the phase studenny signal determines the frequency and phase sequence of control pulses, coming to control the frequency Converter 1, thereby making it possible to stay in a resonant mode inductors with different self-inductances. In addition, the block phase-locked loop compensates for changes of the parameters of the oscillating circuit associated with a change in magnetic permeability of the heated object by automatically maintaining the maximum power coefficient. Upon completion of the heating switches off the supply voltage from the inductor and is removal or planting details. Then select the inductor corresponding to another part, and the operation is repeated.

A specific example of the invention can serve as the induction heating parts reducer node low gear trains ER-2T in the composition of Converter systems, automatic control and stabilize the temperature of the inductors in the set of 6-8 pieces, depending on the number of processing operations. In Fig.3 schematically shows an inductor for heating ring 80-32518 weight 0.9 kg for removal or planting. In addition, for example, consider an inductor for heating the gear before landing mass of 18 kg and the inductor for nagnetic material, patterns required temperature fields, and the time required for their guidance, designed and manufactured inductors with the following power values: for ring - 2kva, for gear - 4kW and flange cat. These inductors serially connected to the respective sections matching transformer through one capacitance of the resonant capacitor, and inductors for heating ring and pinion are connected to one section with a voltage of 55V and the inductor for heating flange section with a voltage of 220V. The resonant frequency for each of the inductors is characterized by the following values: inductor for ring of 7.3 kHz, the inductor for gear and 9.8 kHz and the inductor for flange - to 9.5 kHz, which corresponds to the range-locked loop frequency equal to 7-10 kHz, which meets sanitary standards and rules prescribed by regulation of the parameters of electromagnetic radiation.

Reducing labor costs associated with the possibility of quick change of inductors and switching installation in the desired mode of operation when changing the inductor, in addition, there is no need to wait to cool before processing the next part. This installation allows for a compact workplace ter; margin-top:2mm;">Claims

1. Installation of induction heating for installation and dismantling of assemblies consisting of the parts, the mating hot landing containing a frequency Converter connected to the matching transformer having primary and secondary windings, with the resonant circuit included in the latter formed by the capacitor and the corresponding inductor in the shape corresponding to the shape of the heated them to the surface, characterized in that it introduced block-locked loop output frequency of the Converter, its inputs connected to the voltage detector, installed parallel to the primary winding of the matching transformer, and a current sensor installed in the circuit of the primary winding of the matching transformer, and the output from the input unit generating control pulses, the output of which is connected to the frequency Converter, the installation uses a set of interchangeable inductors, each of which is made in the form of electricity and heat-insulating casing and an electric winding, and the number of turns of the winding of each inductor is selected from the conditions of their work in the interval-locked loop resonant frequency at a fixed value of the capacitance of the resonant towardshis transformer is made of a partitioned, with the number of sections corresponding to the number of groups of inductors, each of the sections of the secondary winding overlaps one of the intervals of the output power of the Converter.

2. Installation under item 1, in which the number of groups of inductors and sections of the secondary winding of the matching transformer is determined by the ratio of the interval of values of the power required to achieve the specified heating rate of the entire range of parts to the output range corresponding to the selected group of inductors.

 

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SUBSTANCE: movable installation includes lifting table having lower wheeled platform and jointly mounted on it upper stand; mechanism for lifting and descending said stand; power hydraulic cylinder mounted on upper stand and communicated by means of hydraulic lines through control unit with high-pressure pump system; clamping device for mounting-dismounting bearing assemblies. High pressure pump system includes tank, pump aggregate, draining pipeline, suction pipeline connecting inlet of pump aggregate with tank. Lifting and descending mechanism is in the form of hydraulic cylinder and it is mounted on lower platform. Pump aggregate is arranged on upper lid of tank and it is in the form of displacement hydraulic pump with electric motor. Filter is mounted in suction pipeline. Control unit is in the form of body having two built-in safety valves, tap distributor and built-in non-return valve. Manometer and additional filter connected with draining pipeline and having pouring hole are connected with control unit. Hydraulic lines are in the form of flexible hoses. Installation is provided with additional power hydraulic cylinder that forms together with connected in parallel main hydraulic cylinder unit of power hydraulic cylinders. Said unit of power hydraulic cylinders is placed on supporting sheet-plate mounted on upper stand with possibility of rotation or removal from upper stand and with possibility of moving in range of length of flexible hoses. Similar cavities of hydraulic cylinders are mutually communicated. Clamping device includes movable and stationary plates mounted respectively on rods and back lids of hydraulic cylinders and designed for joining tie rods of attachment.

EFFECT: enhanced reliability, no-failure operation of installation.

10 dwg

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