CN217656518U - Tool for restraining motor current from damaging bearing - Google Patents

Abstract

The utility model relates to an electrical equipment technical field, concretely relates to restrain frock of motor current damage bearing, comprising a base plate, the upper end fixedly connected with bellows of bottom plate, the upper end fixedly connected with motor case of bellows, the even first connecting plate of fixedly connected with of both ends lateral wall of motor case, the back lid is installed to the one end of motor case, the protecgulum is installed to the other end of motor case, the middle part of motor case is provided with the anti-damage device, the beneficial effects of the utility model are that: be provided with the insulating layer between the lateral wall of output shaft and the axle bearing, can protect the bearing better, prevent that the bearing from being damaged by axle current to increase the life of bearing, and be fixed with damping device at the lateral wall of motor, can carry out the shock attenuation for the motor better, thereby increase the life of motor.

Description

Tool for inhibiting motor current from damaging bearing

Technical Field

The utility model relates to an electrical equipment technical field, concretely relates to restrain frock of motor current damage bearing.

Background

In fact, the motor designed for the frequency converter is called a frequency conversion dedicated motor; the motor can realize different rotating speeds and torques under the driving of the frequency converter so as to adapt to the requirement of load change. The common variable frequency motor is derived from a traditional squirrel cage motor; the self-cooling fan for the traditional motor is changed into an independent fan, and the corona resistance of the motor winding insulation is improved. In some occasions with low requirements on the output characteristics of the motor, such as low power and operation under the condition that the working frequency is close to the rated frequency, the motor can be replaced by a common squirrel-cage motor.

The variable frequency motor exceeds the shaft current that 100kw produced, and the bearing damage to the motor is very serious, and all troubles all produce on the motor bearing, can produce the spark with the steel ball when the overcoat because of the shaft current passes through the bearing to make the bearing appear damaging, increase the change frequency of bearing, so can use insulating bearing or ceramic bearing to replace often, but insulating bearing is high in price, and ceramic bearing load is little, can bring very big inconvenience.

Therefore, it is necessary to design a tool for inhibiting the motor current from damaging the bearing.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a restrain frock of motor current damage bearing, through the damage prevention device, with the axle current that solves present inverter motor and exceed 100kw and produce, it is very serious to the bearing damage of motor, all troubles all produce on the motor bearing, can produce the spark with the steel ball when the overcoat that passes through the bearing because of the axle current, thereby make the bearing appear damaging, increase the change frequency of bearing, so can use insulating bearing or ceramic bearing to replace often, but insulating bearing is high in price, ceramic bearing bears the load for a short time, can bring very big inconvenient scheduling problem.

In order to achieve the above object, the present invention provides the following technical solutions: a tool for inhibiting a motor current from damaging a bearing comprises a bottom plate, wherein a corrugated pipe is fixedly connected to the upper end of the bottom plate, a motor box is fixedly connected to the upper end of the corrugated pipe, first connecting plates are uniformly and fixedly connected to the side walls of two ends of the motor box, a rear cover is installed at one end of the motor box, a front cover is installed at the other end of the motor box, and a damage prevention device is arranged in the middle of the motor box;

the damage prevention device comprises a damage prevention assembly and a damping assembly, wherein the side wall of the rear cover is uniformly connected with a third connecting plate, the side wall of the front cover is uniformly and fixedly connected with a second connecting plate, the third connecting plate and the first connecting plate are connected together through stud threads, the damping assembly is fixedly connected between the motor box and the bottom plate, and the damage prevention assembly is arranged at the middle part of the motor box.

Preferably, the shock absorption assembly comprises a sliding barrel, the sliding barrel is uniformly and fixedly connected to the middle of the upper end of the bottom plate, the upper end of the sliding barrel is connected with a damper in a sliding mode, and the side wall of the damper is provided with a shock absorption spring.

Preferably, the even fixed connection of attenuator is at the lower extreme of motor case, damping spring sets up between motor case and bottom plate, the even fixedly connected with fin of lateral wall of motor case, the lateral wall fixedly connected with controller of motor case.

Preferably, the bad subassembly of loss prevention includes the connecting rod, the quantity of connecting rod is two sets of, two sets of the middle part fixedly connected with bearing housing of connecting rod is two sets of the even fixed connection of connecting rod is on the inner wall of protecgulum and hou gai, the quantity of bearing housing is two.

Preferably, the insulating layer is installed on the inner wall of each of the two bearing sleeves, steel balls are evenly installed on the insulating layer and the bearing sleeves, end cover bearing chambers are fixedly connected to the inner wall of the insulating layer, and the number of the end cover bearing chambers is two.

Preferably, two sides of the bearing sleeves and the end cover bearing chambers are fixedly connected with elastic check rings, output shafts are mounted on the inner walls of the two end cover bearing chambers, and the output shafts are connected to the side wall of the front cover in a penetrating and rotating mode.

Preferably, one end of the output shaft is fixedly connected with a cooling fan, the cooling fan is rotatably connected to the middle of the rear cover, and the side wall of the rear cover is fixedly connected with a ventilation net in a penetrating mode.

Preferably, the rotor is installed to the lateral wall of output shaft, the inner wall of motor case and the lateral wall fixedly connected with stator that is close to the rotor, the rotor sets up between two bearing housing.

The utility model has the advantages that: be provided with the insulating layer between the lateral wall of output shaft and axle bearing, can protect the bearing better, the bearing galvanic corrosion that the electric charge that has avoided the inside accumulation of motor flows through the bearing inner and outer lane and arouses in the bearing, thereby the effect of protection bearing has been played, avoided making the galvanic corrosion that the bearing internal discharge produced because of axle current flows through the bearing, make the bearing receive the protection, the bearing can normally rotate, it is simple to implement, therefore, the cost is low, the motor bearing life-span has been prolonged effectively, and lateral wall at the motor is fixed with damping device, can better carry out the shock attenuation for the motor, thereby increase the life of motor, the whole structure is simple, and convenient operation.

Drawings

Fig. 1 is a front view of a tool for suppressing a motor current from damaging a bearing provided by the present invention;

fig. 2 is a cross-sectional view of a tool for suppressing a motor current from damaging a bearing provided by the present invention;

fig. 3 is a partial enlarged view of a bearing of the tool for suppressing the damage of the bearing caused by the motor current provided by the present invention;

fig. 4 is an enlarged view of the structure of the area a in fig. 2 according to the present invention;

fig. 5 is a schematic view of a bearing part of a tool for suppressing a motor current from damaging a bearing provided by the present invention;

in the figure: 1. a rear cover; 2. a stud; 3. a first connecting plate; 4. a controller; 5. a bellows; 6. a base plate; 7. an output shaft; 8. a front cover; 9. a second connecting plate; 10. a motor case; 11. a heat sink; 12. a third connecting plate; 13. a ventilation net; 14. a heat radiation fan; 15. a slide cylinder; 16. a rotor; 17. a damper; 18. a bearing housing; 19. a connecting rod; 20. a stator; 21. a circlip; 22. steel balls; 23. an insulating layer; 24. an end cap bearing chamber; 25. a shock-absorbing spring.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to the attached drawings 1-5, the utility model provides a tool for inhibiting motor current from damaging a bearing, which comprises a bottom plate 6, wherein the bottom plate 6 can play the supporting and fixing role and is made of metal, a corrugated pipe 5 is fixedly connected to the upper end of the bottom plate 6, the corrugated pipe 5 can play the connecting and protecting role and is made of rubber, a motor box 10 is fixedly connected to the upper end of the corrugated pipe 5, the motor box 10 can play the supporting and protecting role and is made of metal, the side walls of the two ends of the motor box 10 are uniformly and fixedly connected with a first connecting plate 3, the first connecting plate 3 can play the connecting and fixing role and is made of metal, a rear cover 1 is installed at one end of the motor box 10, the rear cover 1 can play the protecting and connecting role and is made of metal, a front cover 8 is installed at the other end of the motor box 10, the front cover 8 can play the protecting and connecting role, is made of metal, the middle part of the motor box 10 is provided with an anti-damage device, the anti-damage device comprises an anti-damage component and a shock absorption component, the side wall of the rear cover 1 is uniformly connected with a third connecting plate 12, the third connecting plate 12 can play a role in connection and fixation and is made of metal, the side wall of the front cover 8 is uniformly and fixedly connected with a second connecting plate 9, the second connecting plate 9 can play a role in connection and fixation and is made of metal, the second connecting plate 9, the third connecting plate 12 and the first connecting plate 3 are connected together through a screw thread 2, the shock absorption component is fixedly connected between the motor box 10 and the bottom plate 6, the anti-damage component is arranged at the middle part of the motor box 10 and comprises a sliding cylinder 15, the sliding cylinder 15 is convenient for the up-down sliding of the damper 17 and is made of metal, the sliding cylinder 15 is uniformly and fixedly connected at the middle part of the upper end of the bottom plate 6, the upper end of the sliding cylinder 15 is connected with a damper 17 in a sliding way, the damping generally means the function of obstructing the relative movement of objects and effectively converting the generated movement friction energy into the required heat energy or other energy capable of dissipating, the damping part in the damping structure is basically in a state of keeping elasticity, and the damping part mainly provides enough excellent rigidity or damping for the main structure, so that the damping structure can effectively meet the requirement in normal use, the side walls of the damper 17 are all provided with damping springs 25, the damping springs 25 can play the role of damping and buffering and are made of metal, the damper 17 is uniformly and fixedly connected with the lower end of the motor box 10, the damping springs 25 are arranged between the motor box 10 and the bottom plate 6, the side walls of the motor box 10 are uniformly and fixedly connected with cooling fins 11, the cooling fins 11 are a device for dissipating heat of electronic elements easy to generate heat in an electrical appliance, the side wall of the motor box 10 is fixedly connected with a controller 4, the controller 4 is a main command device which controls the starting, speed regulation, braking and reversing of the motor by changing the wiring of a main circuit or a control circuit and changing the resistance value in the circuit according to a preset sequence, the damage prevention component comprises connecting rods 19, the connecting rods 19 can play a role in connection and fixation and are made of metal, the number of the connecting rods 19 is two, the middle parts of the two groups of connecting rods 19 are fixedly connected with bearing sleeves 18, the bearing sleeves 18 can play a role in protection and are made of cast iron or steel, and the two groups of connecting rods 19 are uniformly and fixedly connected on the inner walls of the front cover 8 and the rear cover 1, the number of the bearing sleeves 18 is two, the insulating layers 23 are arranged on the inner walls of the two bearing sleeves 18, the insulating layers 23 can play a role of insulating current, the insulating layers 23 are made of steel after being wound by weft tapes, the weft tapes are heated and solidified, and then the outer diameter of the weft tapes is processed, the steel balls 22 are uniformly arranged on the insulating layers 23 and the bearing sleeves 18, the steel balls 22 facilitate the rotation of the bearing sleeves 18 and are made of steel, the inner walls of the insulating layers 23 are fixedly connected with end cover bearing chambers 24, the end cover bearing chambers 24 can play a role of protection and are made of cast iron, the number of the end cover bearing chambers 24 is two, elastic check rings 21 are fixedly connected on two sides of the two bearing sleeves 18 and the two sides of the end cover bearing chambers 24, the elastic check rings 21 can play a role of connection and protection, the output shafts 7 are arranged on the inner walls of the two end cover bearing chambers 24, the output shaft 7 can play a role in connection and rotation and is made of metal, the output shaft 7 penetrates through and is rotatably connected to the side wall of the front cover 8, one end of the output shaft 7 is fixedly connected with a cooling fan 14, when the cooling fan 14 works, blades push air to flow in the same direction as the shaft, so that a heat dissipation and cooling effect is achieved, the flow of the air is accelerated, and a heat dissipation effect is achieved, the cooling fan 14 is rotatably connected to the middle of the rear cover 1, the side wall of the rear cover 1 penetrates through and is fixedly connected with a ventilation net 13, the ventilation net 13 facilitates the circulation of the air and is made of metal, a rotor 16 is installed on the side wall of the output shaft 7, a stator 20 is fixedly connected to the inner wall of the motor box 10 and the side wall close to the rotor 16, and the rotor 16 is arranged between the two bearing sleeves 18;

the utility model discloses a use as follows: the technical personnel in the field use the stud 2 to link together the first connecting plate 3 and the second connecting plate 9, use the stud 2 to link together the first connecting plate 3 and the third connecting plate 12, thereby make the front cover 8 and the rear cover 1 install and fix at the both ends of motor case 10, make rotor 16 and stator 20 in the motor case 10 mutually support through the controller 4 and make output shaft 7 rotate, output shaft 7 can rotate at the middle part of two bearing bushes 18, it can play insulating effect to be provided with insulating layer 23 at the inner wall of bearing bush 18, the bearing electroerosion that the electric charge that has avoided the inside accumulation of motor flows through the inner and outer ring of bearing caused has been avoided, thereby played the effect of protecting the bearing, avoided because of the axle current flows through the bearing and has played the electroerosion that the inside discharge of bearing, make the bearing protected, output shaft 7 when rotating, can drive radiator fan 14 of one end and rotate, accelerate the flow of air, make the hot air discharge through ventilation network 13, thereby play the radiating effect, and also can play the radiating effect of heat dissipation, when the motor case works when the vibrations produce, can make the shock absorber 17 that can make the shock absorber slide about the convenience increase in the life-absorbing of the motor case, thereby the shock absorber 15, thereby can be used the shock absorber 15.

The above is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.

Claims (8)

1. The utility model provides an restrain frock of motor current damage bearing, includes bottom plate (6), upper end fixedly connected with bellows (5) of bottom plate (6), the upper end fixedly connected with motor case (10) of bellows (5), the even fixedly connected with first connecting plate (3) of both ends lateral wall of motor case (10), back lid (1) is installed to the one end of motor case (10), protecgulum (8), its characterized in that are installed to the other end of motor case (10): the middle part of the motor box (10) is provided with an anti-damage device;

the anti-damage device comprises an anti-damage component and a damping component, the side wall of the rear cover (1) is uniformly connected with a third connecting plate (12), the side wall of the front cover (8) is uniformly and fixedly connected with a second connecting plate (9), the third connecting plate (12) and the first connecting plate (3) are connected together through a stud (2) and threads, the damping component is fixedly connected between a motor box (10) and a bottom plate (6), and the anti-damage component is arranged in the middle of the motor box (10).

2. The tool for inhibiting the motor current from damaging the bearing as claimed in claim 1, wherein: shock-absorbing assembly includes slide cartridge (15), the even fixed connection of slide cartridge (15) is in the upper end middle part of bottom plate (6), the upper end sliding connection of slide cartridge (15) has attenuator (17), the lateral wall of attenuator (17) all is provided with damping spring (25).

3. The tool for inhibiting the motor current from damaging the bearing as claimed in claim 2, wherein: the utility model discloses a motor case, including attenuator (17), damping spring (25), motor case (10), bottom plate (6), the even fixedly connected with fin (11) of lateral wall of motor case (10), the lateral wall fixedly connected with controller (4) of motor case (10).

4. The tool for inhibiting the motor current from damaging the bearing as claimed in claim 1, wherein: the bad subassembly of loss prevention includes connecting rod (19), the quantity of connecting rod (19) is two sets of, two sets of middle part fixedly connected with bearing housing (18) of connecting rod (19) are two sets of the even fixed connection of connecting rod (19) is on the inner wall of protecgulum (8) and hou gai (1), the quantity of bearing housing (18) is two.

5. The tool for inhibiting the motor current from damaging the bearing as claimed in claim 4, wherein: insulating layer (23) are all installed to bearing housing (18) inner wall, steel ball (22) are evenly installed to insulating layer (23) and bearing housing (18), the equal fixedly connected with end cover bearing room (24) of inner wall of insulating layer (23), the quantity of end cover bearing room (24) is two.

6. The tool for inhibiting the motor current from damaging the bearing as claimed in claim 5, wherein: two sides of the bearing sleeves (18) and the end cover bearing chambers (24) are fixedly connected with elastic retainer rings (21), the output shafts (7) are installed on the inner walls of the end cover bearing chambers (24), and the output shafts (7) penetrate through and are rotatably connected to the side wall of the front cover (8).

7. The tool for restraining the motor current from damaging the bearing according to claim 6, characterized in that: one end fixedly connected with radiator fan (14) of output shaft (7), radiator fan (14) rotate to be connected in the middle part of back lid (1), fixedly connected with ventilation net (13) is run through to the lateral wall of back lid (1).

8. The tool for inhibiting the motor current from damaging the bearing as claimed in claim 7, wherein: the motor is characterized in that a rotor (16) is mounted on the side wall of the output shaft (7), a stator (20) is fixedly connected to the inner wall of the motor box (10) and the side wall close to the rotor (16), and the rotor (16) is arranged between two bearing sleeves (18).

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