CN116073555A - Motor end cover capable of being conveniently adjusted in dynamic balance - Google Patents

Abstract

The invention discloses a motor end cover capable of facilitating dynamic balance adjustment, and relates to the field of motors. When the rotor balance of the high-speed motor is adjusted, the process end cover is needed, the motor end cover is needed to be disassembled and assembled, the cost is high, the period is long, and the process is complex. The motor inner rotor balancing hole cover comprises an end cover body and a balancing hole cover, wherein the end cover body is provided with a balancing hole which penetrates through in the axial direction, the radial position of the balancing hole on the end cover corresponds to the position of a balancing ring at the end part of the motor inner rotor, and the balancing hole cover is detachably connected and fixed on the end cover and is positioned on the outer side of the motor end cover in the axial direction and covers the balancing hole. Through setting up a balancing hole to the position of balancing ring on the end cover of motor, can conveniently carry out the installation of balancing piece in rotor balancing ring department through this hole, cover this hole after the balance adjustment is accomplished, can conveniently realize the balance adjustment to the rotor, avoid the dismouting operation of motor, also no longer need the technology end cover, simplified balance adjustment technology, shorten installation or maintenance time limit for a project, can effectively reduce cost.

Description

Motor end cover capable of being conveniently adjusted in dynamic balance

Technical Field

The invention relates to the field of motors, in particular to a motor end cover capable of conveniently adjusting dynamic balance.

Background

For a high-speed motor, the balance accuracy of the rotor has great influence on the vibration of the whole motor, and for a large-machine-base motor, the rotating speed of the balance motor is generally not more than 1000r/min, and in order to improve the balance accuracy, the rotating speed of the rotor needs to reach about 2000-3000r/min, the conventional method is to assemble the motor by using a technical end cover, electrify the motor, balance by using the rotating speed of the motor, and replace the technical end cover by using the conventional end cover after balance. The production cycle of this mode is longer, needs dismouting once more, needs processing technology end cover, and the cost is higher, cost of labor and material cost. In addition, because the process end cover and the original end cover are different after all, the condition that the vibration of the process end cover is small and the vibration of the normal end cover is increased is sometimes caused, and in this case, the dynamic balance needs to be re-performed.

In addition, in the use process of the user on site, the situation that the vibration of the motor is increased and the rotor balance is needed is also existed, the general method is to detach the motor, find repair the repair factory to repair or repair the original manufacturer, detach the end cover of the motor, survey and drawing, manufacture the process end cover, assemble the original end cover, disassemble the process end cover, generally the same end cover as the original end cover, mill a sector hole corresponding to the position of the rotor balance groove, then enter the balance block into the motor from the sector hole, fix the balance block on the corresponding position of the balance ring by rotating the rotor by hand, wherein the corresponding position is the position measured by the balance equipment. The maintenance operation process is extremely troublesome, high in cost and long in maintenance time.

Disclosure of Invention

The invention aims to solve the technical problems and the technical task of improving the prior art, and provides a motor end cover capable of facilitating dynamic balance adjustment, aiming at facilitating balance adjustment of a rotor. For this purpose, the present invention adopts the following technical scheme.

The utility model provides a motor end cover that can make things convenient for dynamic balance to adjust, includes end cover body and balance hole lid, the end cover body on be equipped with one or more axial balancing hole that runs through, the balancing hole correspond with the balanced ring position of motor inner rotor tip in the radial position of end cover, and the balancing hole is greater than the unilateral radial width of balanced ring, balance hole lid detachably connect and be fixed in on the end cover, and be located the axial outside of motor end cover, cover the balancing hole. Through setting up the balancing hole that runs through to the position of balancing ring on the end cover of motor, can conveniently carry out the installation of balancing piece in balancing ring department through the balancing hole, cover this hole after the balance adjustment is accomplished, can conveniently realize the balance adjustment to the rotor, avoid the dismouting operation of motor, also no longer need the technology end cover, simplified balanced adjustment technology, shorten installation or maintenance time limit for a project, can effectively reduce cost.

As a preferable technical means: the balance hole is characterized in that a plane hole seat which is axially higher than the outer surface of the end cover is arranged on the periphery of the balance hole, the balance hole cover is flat cylindrical, and the balance hole cover is fixedly connected to the plane hole seat through a plurality of fasteners. By arranging the plane hole seat, the complexity of the balance hole cover can be reduced, longer connecting fastening length is provided for the fastening piece, and the fastening capacity of the structure is enhanced.

As a preferable technical means: the balance hole is a round hole with the diameter of 48-52mm. The size is larger than the width of the balance ring, and the optimization is reasonable.

As a preferable technical means: the fastener is a bolt and elastic washer combination. The influence of vibration on the bolt can be effectively reduced by adding the elastic washer on the bolt, and the bolt is prevented from loosening.

As a preferable technical means: the number of the fasteners is 3-5. The number is reasonable, and firm and reliable fastening can be realized.

The beneficial effects are that: through setting up a through-hole to the position of balanced ring on the end cover of motor, can conveniently carry out the installation of balancing piece in balanced ring department through this hole, cover this hole after the installation is accomplished, can conveniently realize the balanced regulation to the rotor in the scene, avoided the dismouting operation of motor end cover, no longer need the technology end cover, simplified balanced regulation technology, shorten installation or maintenance time limit for a project, can effectively reduce cost.

Drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a schematic view of a part of the structure of the present invention.

In the figure: 1. an end cap; 2. a balance hole cover; 3. a fastener; 101. a planar hole seat; 102. balance holes.

Detailed Description

The technical scheme of the invention is further described in detail below with reference to the attached drawings.

As shown in fig. 1-2, a motor end cover capable of facilitating dynamic balance adjustment comprises an end cover 1 body and a balance hole cover 2, wherein the end cover 1 body is provided with a balance hole 102 penetrating axially, the radial position of the balance hole 102 on the end cover 1 corresponds to the position of a balance ring at the end part of an inner rotor of a motor, the balance hole 102 is larger than the radial width of one side of the balance ring, the balance hole cover 2 is detachably connected and fixed on the end cover 1 and is positioned on the outer side of the motor end cover 1 in the axial direction to cover the balance hole 102.

In order to enhance the structure fastening capability, the periphery of the balance hole 102 is provided with a plane hole seat 101 which is axially higher than the outer surface of the end cover 1, and the balance hole cover 2 is flat cylindrical and is fixedly connected to the plane hole seat 101 through a fastener 3. By providing a planar orifice seat 101, the complexity of the balance orifice cover 2 can be reduced and longer connection fastening lengths can be provided for the fasteners 3, enhancing structural fastening capabilities.

In this example, the balance hole 102 is a circular hole with a hole diameter of 50mm. The size is larger than the width of the balance ring, and the optimization is reasonable.

To reduce the effect of vibration on the bolt, the fastener 3 is a bolt+spring washer combination. The influence of vibration on the bolt can be effectively reduced by adding the elastic washer on the bolt, and the loosening of the bolt is avoided.

In this example, the number of fasteners 3 is four. The number is reasonable, and firm and reliable fastening can be realized.

During balance adjustment, the bolts are unscrewed, the balance hole cover 2 is opened, then the balance weight is mounted on the balance ring of the rotor through the balance hole 102, after the balance adjustment is completed, the balance hole cover 2 is fastened and covered on the balance hole 102 through the bolts and the elastic washers, the balance adjustment of the rotor can be conveniently realized on site, the disassembly and assembly operation of the motor is avoided, the process end cover 1 is not needed any more, the balance adjustment process is simplified, the mounting or maintenance period is shortened, and the cost can be effectively reduced.

The motor end cover capable of being conveniently adjusted in dynamic balance shown in the above figures 1-2 is a specific embodiment of the invention, has already demonstrated the outstanding substantial characteristics and remarkable progress of the invention, and can be subjected to equivalent modification in terms of shape, structure and the like according to actual use requirements, and is within the scope of protection of the scheme.

Claims (6)

1. A motor end cover capable of facilitating dynamic balance adjustment is characterized in that: including end cover (1) body and balance hole lid (2), end cover (1) body on be equipped with one or more axial balancing hole (102) that run through, balancing hole (102) correspond with the balanced ring position of motor inner rotor tip in the radial position of end cover (1), and balanced hole (102) are greater than the unilateral radial width of balanced ring, balance hole lid (2) detachably connect and be fixed in on end cover (1), and be located the axial outside of motor end cover (1), cover balanced hole (102).

2. The motor end cover capable of facilitating dynamic balance adjustment according to claim 1, wherein: the periphery of the balance hole (102) is provided with a plane hole seat (101) which is axially higher than the outer surface of the end cover (1), the balance hole cover (2) is flat cylindrical, and the balance hole cover is fixedly connected to the plane hole seat (101) through a plurality of fasteners (3).

3. The motor end cover capable of facilitating dynamic balance adjustment according to claim 2, wherein: the balance hole (102) is a round hole with the diameter of 48-52mm.

4. A motor end cap for facilitating dynamic balance adjustment as defined in claim 3, wherein: the fastener (3) is a bolt and elastic washer combination.

5. The motor end cover capable of facilitating dynamic balance adjustment according to claim 4, wherein: the number of the fasteners (3) is 3-5.

6. The motor end cover capable of facilitating dynamic balance adjustment according to claim 1, wherein: the end cover (1) body is provided with a balance hole (102).

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