CN220544845U - Split type permanent magnet axle-holding type axle generator - Google Patents

Abstract

The utility model relates to a split type permanent magnet axle-holding type axle-belt generator, and belongs to the technical field of generators. The problem of prior art's generator influences former ship main shaft and bearing great is solved. Including stator and rotor, the inside rotor that is provided with of stator still includes the tight cover that expands, and two half tight covers head and tail connections that expand form tight cover, and two half stators can dismantle the connection and form the stator, and two half rotors can dismantle the connection and form the rotor, and tight cover setting expands in the rotor, and the stator can be dismantled with the rotor coaxial and be connected. The stator and the rotor are completely independent and separated in structural type and electromagnetic principle, and in the reconstruction of the shipbuilding, the motor can be installed without changing the original layout of the original structure, so that the goal of additionally installing the shaft generator after shipbuilding can be realized.

Description

Split type permanent magnet axle-holding type axle generator

Technical Field

The utility model relates to a split-type generator, and belongs to the technical field of generators.

Background

Along with the improvement of the energy-saving and consumption-reducing requirements of the ship, the demand of the ship on the additionally-installed shaft generator is obviously improved, the power of a ship main engine is generally more than 10 percent, the capacity of the generator installed on the ship does not exceed the value, and the efficiency of the main engine is higher than that of the conventional auxiliary engine generator, so that the energy-saving and consumption-reducing index of the ship can be obviously improved by additionally installing the shaft generator.

The new ship can be designed and manufactured, and the generator is usually selected as an integral shaft generator, but the integral generator is not easy to install for the manufactured ship. The reason is that: on the ship, the low-speed axle-locking type shaft generator is a green energy-saving system for generating power by utilizing surplus power of a main engine, so that the energy utilization rate of the ship can be improved, in the ship transformation project, the original main shaft (transmission shaft) is not easy to change, the difficulty of assembling and disassembling the main shaft is large, the period is long, the normal production operation of the ship is greatly influenced, and the flanges are arranged at the two ends of most of the main shafts of the ship, so that the traditional shaft generator cannot be sleeved even if the main shafts are disassembled. Therefore, the split-half axle-locking type generator is installed to become a modification scheme with high feasibility, and the split-half axle generator can be additionally installed with the axle generator under the condition of not changing the original ship structure, so that the purpose of energy-saving modification of the ship can be realized.

However, the conventional electric excitation split-type axle-locking generator has large rotor weight and inertia, has large influence on the main shaft and the bearing of the original ship, and can cause large vibration when serious; meanwhile, the rotor excitation system needs a slip ring assembly, periodic maintenance is needed, and when the shimmy of the main shaft is large, the frequency of faults is high, and the reliability is low.

Therefore, it is needed to provide a split permanent magnet axle-holding type generator to solve the above technical problems.

Disclosure of Invention

The present utility model aims to solve the problem of the prior art generator having a great influence on the primary vessel main shaft and bearings, and provides a split permanent magnet hugging shaft generator, a brief overview of which is given below in order to provide a basic understanding of some aspects of the utility model. It should be understood that this summary is not an exhaustive overview of the utility model. It is not intended to identify key or critical elements of the utility model or to delineate the scope of the utility model.

The technical scheme of the utility model is as follows:

the utility model provides a divide half permanent magnetism to embrace shaft type axle and take generator, includes stator and rotor, and the inside rotor that is provided with of stator still includes the tight cover that expands, and two divide half tight cover head and tail connections to form the tight cover that expands, and two divide half stators to dismantle the connection and form the stator, and two divide half rotors to dismantle the connection and form the rotor, and the tight cover that expands sets up in the rotor, and the stator can be dismantled with the rotor coaxial and be connected.

Preferably: the two ends of the half expansion sleeve are respectively provided with a groove and a bulge, the grooves are dovetail grooves, and the bulge of one half expansion sleeve is detachably connected with the groove of the other half expansion sleeve.

Preferably: the stator is characterized by further comprising an L-shaped connecting sheet, wherein a part of the upper or lower half stator is connected with a corresponding upper or lower half ring-shaped end plate through bolts, and the upper or lower half ring-shaped end plate is detachably connected with a corresponding upper or lower part half rotor through a plurality of L-shaped connecting sheets which are arranged at equal intervals.

Preferably: the radial side of L type connection piece is through first bolt and end plate detachable connection, and the axial side of L type connection piece is through second bolt and end plate detachable connection, and the outer loop of tight cover and the inside boss bolted connection of rotor expand, the high strength tension bolt of rotatory tight cover makes the inner ring and the pivot interference fit of tight cover that expand, and the boss of rotor inside is provided with the strengthening rib with the connecting portion of the lateral wall of rotor.

The utility model has the following beneficial effects:

1. the split and half-shaft-locking permanent magnet generator adopts permanent magnet excitation, does not need exciting current, does not have slip rings and the like, has no mechanical contact between a stator and a rotor, has high reliability, is maintenance-free, and reduces the influence on a transmission shaft;

2. the split half-expansion sleeve structure of the handshake type dovetail groove is adopted, the dovetail groove connection can ensure that the process of expanding and tightly holding the main shaft has enough strength, and the split half structure can be connected and fixed with the rotor without disassembling the main shaft;

3. the high-precision stator-rotor connecting device can ensure that the stator and the rotor which are divided into halves have enough coaxial and centering precision when products leave factories, and the stator-rotor cannot be eccentric during field installation due to good fixing effect, so that personnel and equipment are damaged;

4. the stator and the rotor are completely independent and separated in structural type and electromagnetic principle, and in the reconstruction of the shipbuilding, the motor can be installed without changing the original layout of the original structure, so that the goal of additionally installing the shaft generator after shipbuilding can be realized.

Drawings

FIG. 1 is a schematic diagram of a split permanent magnet hugging shaft type shaft generator;

FIG. 2 is a front view of a split permanent magnet hugging shaft type shaft generator;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a schematic structural diagram of an assembly fixture for the split permanent magnet axle-holding type axle generator.

In the figure, the stator is divided into 1-half, the rotor is divided into 2-half, the expansion sleeve is divided into 3-half, the connecting piece is divided into 4-L, the first bolt is 5-, the second bolt is 6-, the end plate is 7-semicircle ring-shaped, the bearing seat is 21-, the rotating shaft is 22-, the hollow rotating shaft is 23-and the auxiliary frame is 24-.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

The first embodiment is as follows: 1-3, a split permanent magnet axle-holding type axle-belt generator of the embodiment comprises a stator and a rotor, wherein the rotor is arranged in the stator, and the generator further comprises an expansion sleeve, the two split expansion sleeves 3 are connected end to form the expansion sleeve, the two split stators 1 are detachably connected to form the stator, the two split rotors 2 are detachably connected to form the rotor, the expansion sleeve is arranged in the rotor, and the stator and the rotor are coaxially and detachably connected; the integral operation principle of the utility model is that the rotor part adopts permanent magnet excitation, compared with the common electric excitation synchronous generator, the utility model realizes no mechanical contact of stator and rotor, no abrasion and maintenance in the whole service life and high reliability; the permanent magnet excitation has a strong magnetic field, when the split motor is manufactured, the stator and the rotor are isolated and fixed by adopting the connecting and fixing device, the strong magnetic field of the rotor is closed in the motor, the influence of the strong magnetic field in the installation and transportation process is avoided, meanwhile, the centering connection of the stator and the rotor can be continuously kept, the stator and the rotor can be directly installed on a ship, the size of an air gap is accurately adjusted, the on-site adjustment is not needed, the relative position of the stator and the rotor is not needed to be adjusted in the installation process, the installation efficiency on the ship can be improved, and the installation centering precision of a motor body can be ensured.

The second embodiment is as follows: 1-3, grooves and protrusions are respectively formed at two ends of a half-half permanent magnet axle-holding type axle-belt generator in the embodiment, the grooves are dovetail grooves, the protrusions are dovetail protrusions corresponding to the dovetail grooves, the protrusions of one half-half expansion sleeve 3 are detachably connected with the grooves of the other half-half expansion sleeve 3, and weight reducing holes are formed in the expansion sleeve 3; the rotor is connected with the transmission shaft through a handshake type dovetail groove split half expansion sleeve, so that the function of realizing expansion connection and torque transmission under the condition of not moving an original main shaft (transmission shaft) structure is realized, an outer sleeve (outer ring) of the expansion sleeve is of two split half structures, the dovetail groove is connected through the handshake type dovetail groove, and the dovetail groove is designed according to the size of expansion force, so that larger tensile strength can be provided to ensure that the split half expansion sleeve can hold a main shaft tightly; when the ship is transported to the site, the half stator and the half rotor are precisely fixed together through the connecting device, the size of the air gap is precise, and site adjustment is not needed; under the condition that the dovetail groove half expansion sleeve can not move the main shaft, the motor rotor and the main shaft are fixedly connected; in the ship site, the two half expansion sleeves are respectively hung on the main shaft (transmission shaft), the two half expansion sleeves form a complete expansion sleeve structure through the butt joint of the male dovetail groove and the female dovetail groove, and then the outer ring of the expansion sleeve is locked through the split inner sleeve (inner ring) and the screws, and the dovetail groove can provide enough strength to ensure that the locking process of the expansion sleeve is not pulled apart, so that enough friction force is generated to transmit the driving torque transmitted to the generator by the main machine.

And a third specific embodiment: 1-3, the split permanent magnet axle-holding type axle-belt generator of the present embodiment further comprises an L-shaped connecting sheet 4, wherein the upper or lower split stator 1 is connected with the corresponding upper or lower half-ring end plate 7 through bolts, and the upper or lower half-ring end plate 7 is detachably connected with the corresponding upper or lower split rotor 2 through a plurality of L-shaped connecting sheets 4 which are equidistantly arranged; the motor is divided into an upper half permanent magnet motor unit and a lower half permanent magnet motor unit which are separable during manufacturing and are in a separation state before transportation and installation, when the motor is transported to a ship to be installed, the motor is combined and assembled on site, and the two half motors can be accurately assembled in a involution way by designing a manufactured positioning structure; besides the separable structure type of the motor, the motor electromagnetism is also independently separable, and the motor can be independently used or used in parallel on the ship site.

The specific embodiment IV is as follows: referring to fig. 1-3, in this embodiment, a split permanent magnet shaft generator is described, the radial side of an L-shaped connecting piece 4 is detachably connected with an end plate through a first bolt 5, the axial side of the L-shaped connecting piece 4 is detachably connected with the end plate through a second bolt 6, the outer ring of an expansion sleeve is in bolted connection with a boss inside a rotor, the high-strength tension bolt of a rotary expansion sleeve enables the inner ring of the expansion sleeve to be in interference fit with a rotating shaft, and a reinforcing rib is arranged at the connecting part of the boss inside the rotor and the side wall of the rotor.

Fifth embodiment: 1-4, the assembling method of the split permanent magnet axle-holding type generator is mainly applied to the axle-holding type generator in the later stage of the ship, and the axle-holding type generator system is used for driving the ship generator by a host machine in order to realize the disassembly and assembly of the axle-holding type generator in the later stage of the ship, the energy saving purpose is achieved by using the surplus power of the host machine, the power of the host machine of the ship is usually provided with more than 10 percent of allowance, the capacity of the generator arranged on the ship is not more than the value, and the efficiency of the host machine is higher than that of the conventional auxiliary machine generator, so that the energy saving and consumption reduction index of the ship can be obviously improved by additionally arranging the axle-holding type generator, and the purpose of the energy saving and the transformation of the ship can be realized;

the method comprises the following steps:

step one: assembling before delivery/transportation;

the assembly fixture is adopted, and comprises a bearing seat 21, a rotating shaft 22, a hollow rotating shaft 23 and an auxiliary frame 24, wherein one end of the rotating shaft 22 is rotationally connected with the bearing seat 21, the hollow rotating shaft 23 is sleeved on the rotating shaft 22, the rotating shaft 22 is detachably connected with the hollow rotating shaft 23, the auxiliary frame 24 is fixed at one end of the hollow rotating shaft 23, and an opening is formed in the bearing seat 21, so that the installation is convenient, and the weight reduction is realized; the permanent magnet motor rotor has a strong magnetic field, the stator and rotor are not offset by adopting the split stator and rotor connecting and fixing device, the coaxial performance and centering precision of the stator and rotor can be ensured, when the motor is manufactured, the stator and rotor are centered by adopting a centering tool (assembly tool), the connection fixing and centering precision of the stator and rotor can be further ensured by adopting an L-shaped connecting sheet, the centering of the stator and rotor can be continuously ensured to maintain a sufficient air gap in the transportation and ship installation sites, and the influence of the strong magnetic field on ferromagnetic parts in the installation process is ensured without adopting extra measures during installation;

the method comprises the following steps:

step 1.1: two semicircular end plates 7 which are arranged vertically symmetrically form an end plate, two split stators 1 which are arranged vertically symmetrically form a stator through detachable connection of bolts, two split rotors 2 which are arranged vertically symmetrically form a rotor through detachable connection of connecting pieces with bolts and the inner wall of a rotor block, and two split expansion sleeves 3 which are arranged left and right are connected end to form an expansion sleeve;

step 1.2: one end of the stator is connected with an end plate through bolts, a group of L-shaped connecting sheets 4 which are circumferentially equidistant are arranged on the end plate, one end of the stator is connected with a bearing seat 21 through bolts, and the position of the stator is fixed;

step 1.3: the hollow rotating shaft 23 is sequentially sleeved with an expansion sleeve and a rotor, a third bolt sequentially passes through a through hole of the auxiliary frame 24 and a part of threaded holes in the expansion sleeve to connect the auxiliary frame 24 and the expansion sleeve, and a fourth bolt sequentially passes through the through hole of the rotor and the other part of threaded holes in the expansion sleeve to connect the rotor and the expansion sleeve; the third bolts and the fourth bolts are alternately arranged; if the test is needed, the expansion sleeve is screwed down, so that the expansion sleeve is in interference fit with the hollow rotating shaft 23;

step 1.4: sleeving the hollow rotating shaft 23 on the rotating shaft 22, rotating the hollow rotating shaft 23 to enable a threaded hole on one side of the rotor to correspond to one group of L-shaped connecting pieces 4, correspondingly installing a second bolt 6 through an opening of the bearing seat 21, and enabling the second bolt 6 to sequentially penetrate through the L-shaped connecting pieces 4 and the threaded hole on one side of the rotor;

step 1.5: the other end of the stator is connected with the other end plate through bolts, the other end part is provided with the other group of L-shaped connecting pieces 4 through corresponding first bolts 5, and the other group of L-shaped connecting pieces 4 are connected with the threaded holes on the other side of the rotor through corresponding second bolts 6;

step 1.6: separating the stator from the bearing seat 21, separating the outer ring of the expansion sleeve from the auxiliary frame 24, and separating the hollow rotating shaft 23 from the rotating shaft 22;

step 1.7: loosening a bolt of an expansion sleeve, and separating the hollow rotating shaft 23 from the expansion sleeve by clearance fit between an inner ring of the expansion sleeve and the hollow rotating shaft 23, so that the whole of the split type permanent magnet axle-holding type shaft generator is separated from an assembly tool, and assembly before delivery is completed; the installation precision is ensured, and the shipment is convenient;

step two: the field assembly comprises the following steps:

step 2.1: the bolts connecting the rotor and the expansion sleeve are disassembled, then the bolts connecting the two half stators 1 and the bolts connecting the half rotors 2 are disassembled, the upper half stator 1 and the upper half rotor 2 are ensured to be integrated, the lower half stator 1 and the lower half rotor 2 are ensured to be integrated, and finally the two spliced half expansion sleeves 3 are separated;

step 2.2: the two half-expansion sleeves 3 are sequentially arranged on a transmission shaft, an upper half stator 1 and a half-rotor 2 which are integrated, a lower half stator 1 and a half-rotor 2 which are integrated are sequentially arranged on the outer side of the expansion sleeve, a rotor is connected with the expansion sleeve by using bolts, the two half stators 1 are connected by using bolts, the two half-rotors 2 are connected by using bolts, and the lower part of the stator is arranged on a connecting seat 8 by using bolts so as to realize the fixation of the stator; the relative positions of the connecting seat 8 and the transmission shaft are fixed; the split permanent magnet axle-holding type axle-belt generator has the advantages that two independent groups of integrated structures of the motor can be directly connected in the process of ship transformation, the original main shaft (transmission shaft) structure is not required to be changed and detached, and on the basis of reducing the installation difficulty, the precision of the combined axle-belt generator can be ensured to meet the normal operation requirement;

step 2.3: rotating the expansion sleeve bolt to enable the expansion sleeve to be in interference fit with the transmission shaft;

step 2.4: the first bolt 5 and the second bolt 6 are rotated to separate the L-shaped connecting sheet 4 from the stator and the rotor; according to the utility model, the stator and rotor connecting and fixing device is used for accurately positioning, so that the problem of deviation absorption during installation of the stator and rotor of the permanent magnet motor is solved, the split permanent magnet axle-locking machine can be well applied to energy-saving transformation of ships, and an effective energy-saving effect and benefits can be brought to ship operators.

In the above embodiments, as long as the technical solutions that are not contradictory can be arranged and combined, a person skilled in the art can exhaust all the possibilities according to the mathematical knowledge of the arrangement and combination, so the present utility model does not describe the technical solutions after the arrangement and combination one by one, but should understand that the technical solutions after the arrangement and combination have been disclosed by the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (4)

1. The utility model provides a divide half formula permanent magnetism to embrace axle formula axle and take generator which characterized in that: including stator and rotor, the inside rotor that is provided with of stator, its characterized in that: the motor rotor is characterized by further comprising an expansion sleeve, wherein the two half expansion sleeves (3) are connected end to form the expansion sleeve, the two half stators (1) are detachably connected to form the stator, the two half rotors (2) are detachably connected to form the rotor, the expansion sleeve is arranged in the rotor, and the stator and the rotor are coaxially and detachably connected.

2. The split permanent magnet hugging shaft type shaft generator of claim 1, wherein: the two ends of the half expansion sleeve (3) are respectively provided with a groove and a bulge, the grooves are dovetail grooves, and the bulge of one half expansion sleeve (3) is detachably connected with the groove of the other half expansion sleeve (3).

3. The split permanent magnet hugging shaft type shaft generator of claim 1, wherein: the motor further comprises L-shaped connecting pieces (4), wherein the upper or lower half stator (1) is connected with the corresponding upper or lower half ring-shaped end plate (7) through bolts, and the upper or lower half ring-shaped end plate (7) is detachably connected with the corresponding upper or lower half rotor (2) through a plurality of L-shaped connecting pieces (4) which are equidistantly arranged.

4. A split permanent magnet hugging shaft generator according to claim 3 and wherein: the radial side of L type connection piece (4) can dismantle with the end plate through first bolt (5), and the axial side of L type connection piece (4) can dismantle with the end plate through second bolt (6) and be connected, and the outer loop of expanding the tight cover is connected with the inside boss bolt of rotor, and the high strength tension bolt of rotatory expanding the tight cover makes the inner ring and the pivot interference fit of expanding the tight cover, and the boss of rotor inside is provided with the strengthening rib with the connecting portion of the lateral wall of rotor.