CN206375542U - A kind of permanent-magnet synchnorous gearless dragging machine - Google Patents

Abstract

The utility model discloses a kind of permanent-magnet synchnorous gearless dragging machine, including support, main shaft and the stator arranged around main shaft are provided with the support, the rotor of traction sheave is provided with around main axis and also served as on the main shaft, the axial end of rotor is provided with the permanent magnet being engaged with stator, the first installation position is provided with the one end of main shaft away from rotor, in support, dorsad rotor side is provided with the second installation position, the trigger element being fixed with the information collecting device of sense rotor movement, the rotor with information collecting device phase separation is provided with an at least installation position.The permanent-magnet synchnorous gearless dragging machine that the utility model is provided, axial dimension is shorter, and smooth running, noise is small, safe and reliable, and versatility is good.

Description

A kind of permanent-magnet synchnorous gearless dragging machine

Technical field

The utility model is related to elevator technology field, and in particular to a kind of permanent-magnet synchnorous gearless dragging machine.

Background technology

Ultra-thin permanent-magnet synchnorous gearless dragging machine is arranged on the guide rail in hoistway, because not taking additionally in the height direction Hoistway space, is approved by market, and demand is increasingly huge to be increased.

Under normal circumstances, elevator traction machine needs configuration codes device, and encoder carries out machinery even with traction machine rotary part Connect, the information transmission that traction machine is rotated to apparatus for controlling elevator.Traction machine generally only sets an encoder in the prior art Installation position, assembles a kind of encoder, such as only configures photoelectric encoder or magnet ring encoder.But the mounting structure of every kind of encoder Difference, client can not select suitable encoder to be installed according to switch board demand, cause the versatility of traction machine poor, increase Plus extra cost.And the encoder of exposed setting adds the axial dimension of traction machine, this ultra-thin machine required with traction machine Body is runed counter to.

Conventional permanent-magnet synchnorous gearless dragging machine is radial magnetic field, and radially, bearing is solely subjected to radial load to load.Small load-carrying The Bearing configuration of main frame uses two deep groove ball bearings, for heavy－duty main frame, because of deep groove ball bearing dynamic load rating not Foot, Bearing configuration uses a self-aligning roller bearing and a deep groove ball bearing.It need to only be met during the life-span of calculation bearing radially Power.

Ultra-thin permanent-magnet synchnorous gearless dragging machine is axial magnetic field, load radial direction, because axial magnetic pull exists and made always For bearing, bearing must bear radial load and axial force simultaneously, and the stress of bearing is different from the Conventional permanent magnet of radial magnetic field Synchnorous gearless dragging machine.The width of bearing is limited by traction machine axial length.

Ultra-thin permanent-magnet synchnorous gearless dragging machine in the market, the electromagnetic technique of axial magnetic field is progressively ripe.Axle Configuration is held using the in the majority of two deep groove ball bearings, because bearing noise is big and the main frame of depot repair is a lot.Also other can be used Bearing configuration a, for example, self-aligning roller bearing and a deep groove ball bearing, self-aligning roller bearing are used for bearing big radial load And axial force, but the end-play of self-aligning roller bearing is 0.3~0.6mm, the margin of tolerance is very big, can directly affect axial magnetic Field air gap 1.5mm uniformity.

Utility model content

The utility model provides a kind of permanent-magnet synchnorous gearless dragging machine, and axial dimension is shorter, smooth running, noise Small, safe and reliable, versatility is good.

Main shaft is provided with a kind of permanent-magnet synchnorous gearless dragging machine, including support, the support and around main shaft arrangement Stator, be provided with around main axis and also serve as the rotor of traction sheave on the main shaft, the axial end of rotor be provided with it is fixed The permanent magnet that son is engaged, the first installation position is provided with the one end of main shaft away from rotor, support dorsad rotor side provided with the It is provided with the information collecting device of sense rotor movement, the rotor and is fixed with and information at two installation positions, at least an installation position The trigger element of harvester phase separation.

The trigger element and rotor synchronous axial system, described information harvester are used for the signal of trigger collection element, from And obtain the rotary state information of rotor.Information collecting device and trigger element cooperate, the common function of completing encoder.

The permanent-magnet synchnorous gearless dragging machine that the utility model is provided, while reserving the installation of two information collecting devices Position, can select suitable information collecting device to be installed according to the different switch board demands of client.

The support is fixedly connected with main shaft, or support is structure as a whole with main shaft, and the support is provided with along spindle shaft The first passage of line arrangement, and the arrangement that misplaces with main shaft second channel, support dorsad rotor side be provided with it is first logical Corresponding first installation position in road position, and the second installation position corresponding with second channel position；First installation position and the One channel position is corresponding, and second installation position is corresponding to second channel position.

The first passage and second channel can be the through hole through support, or be opened in blind on support Hole.In order to reduce axial dimension, and facilitate the installation of information collecting device, the first passage and second channel run through machine Seat.

First passage and second channel the dislocation arrangement, refers to axis direction arrangement of the first passage along main shaft, second Passage deviates the axis direction arrangement of main shaft.

The permanent-magnet synchnorous gearless dragging machine that the utility model is provided uses axial magnetic field, dead axle structure, with pivot structure Compare, axial dimension is shorter, run more stable and more efficient.

Preferably, dorsad rotor side is equipped with depressed area, described for the main shaft one end and support away from rotor One installation position and the second installation position are located in corresponding depressed area respectively.

First installation position and the second installation position are respectively in corresponding depressed area, after information collecting device is installed, It is sunken to completely in depressed area, dorsad will not causes projection in rotor side in support.

Preferably, the inwall of the corresponding depressed area in first installation position and the second installation position is equipped with installation step, Described information harvester is fixed on corresponding installation step.

The installation step is used for the installation site of prescribed information harvester, it is ensured that the positioning accurate of information collecting device Really.

Preferably, the support is extended radially outward by main shaft periphery, and outer rim position is bent towards rotor side By rotor semi-surrounding.

In order to increase the intensity of support, it is preferable that the outer rim position of the support is the reinforcement area thickened.

Preferably, the support is offset at neighbouring main shaft towards the direction close to rotor, support is formed in offset area The annular settling zone being distributed around main shaft, second installation position is in annular settling zone.

Support is plate-like, and the annular settling zone is arranged around main shaft, and the second installation position is in annular settling zone.

Preferably, the rotor is arranged on main shaft by the two row bearings that are arranged side by side, wherein towards support side For four-point contact ball, dorsad support side is single row roller bearing.

The two row bearing can be an entirety, it would however also be possible to employ two bearings for being arranged side by side and mutually reclining, its In bearing be four-point contact ball, another bearing is single row roller bearing.

Four-point contact ball, single bearing can replace the angular contact ball bearing that positive combination or the back side are combined, than with rule The axial space that the double-row angular contact bal bearing of lattice takes is few.Four-point contact ball is due to being double half inner rings (or outer ring), dress Ball increasing number, with larger bearing capacity, can bear radial load and bi-directional axial load, limit the axle of both direction To displacement, it is adaptable to bear purely axial load or axial, the united load based on axial load.

Four-point contact ball is arranged on towards support side (side for installing permanent magnet), to undertake with axial direction Axial, united load based on load.Four-point contact ball is compared with other ball bearings, when end-play is identical, With the less feature of end-play, accordingly, it is capable to preferably ensure the magnetic gap between stator and rotor.

Single row roller bearing, roller and raceway are linear contact lay, radial direction large carrying capacity, it is adaptable to bear heavy load with Impact load, single row roller bearing is arranged on below traction sheave and undertakes heavy load.Radial load effect under, rotor by The effect of downward force, the top of rotor is leaned forward, i.e. the top of rotor is relatively distant from stator, causes above and below magnetic field air gap not .Single row roller bearing is linear contact lay carrying, than the ball bearing of contact and a self-aligning roller bearing with aligning function Compare, preferably can prevent and correct leaning forward for rotor the top.

Side by side and the installation that mutually reclines, on the premise of bearing capacity is met, main machine structure can be by original for two bearings The freely supported structure come is changed into cantilever design, makes the axial dimension of traction machine shorter.

Bearing configuration of the present utility model rationally, can bear big radial load, can also bear big axial force, make bearing Carrying is changed into underloading from original heavy duty, in the case where axial length is constant, improves the reliability of traction machine, and with it is similar Product is shorter compared to axial dimension, can fully meet the installation requirement in the small space of machine room main frame.

Preferably, the front bearing retainer and rear bearing cover for blocking the two row bearing are fixed with the rotor, wherein before Bearing cap is located at the side of rotor dorsad support, and rear bearing cover is located at side of the rotor towards support.

The position at center is carried with traction sheave using the seam control bearing of front bearing retainer and rear bearing cover, is ensured with this The stress of bearing is more excellent, shaft strength is changed into underloading from heavy duty, it is ensured that the fatigue life of bearing is longer.

Preferably, described information harvester is included on the first encoder being located in the first installation position, the rotor Trigger element corresponding with the first encoder is the connecting rod being fixed on front bearing retainer, and the connecting rod is encoded through main shaft and with first Code-disc linkage in device.

First encoder is photoelectric encoder, connecting rod and rotor and code-disc synchronous axial system, by reading code-disc Rotate, obtain the velocity of rotation of rotor.

Preferably, described information harvester is included on the second encoder being located in the second installation position, the rotor Trigger element corresponding with second encoder is fixed on the rear bearing cover.

The second encoder is magnet ring encoder, magnet ring and rotor synchronous axial system, by reading the rotation of magnet ring, is obtained The velocity of rotation of rotor.

Encoder is generally included：With the movable part of rotating speed part synchronous axial system to be measured, and detection movable part turn signal Static element, on the first installation position and the second installation position stricti jurise in the utility model for, for installing encoder Static element, movable part is partially installed on rotor.It is succinct for statement, encoder is referred to encoder or information collecting device Static element, with trigger member refer to movable part.

The permanent-magnet synchnorous gearless dragging machine that the utility model is provided, machining is assembled and easy to maintenance；Can be simultaneously Photoelectric encoder and magnet ring encoder are configured, different switch board demands are met；Rationally, load-carrying properties are good for Bearing configuration, fortune Row is reliable and stable, and noise is small, safe and reliable, efficient energy-saving；Using dead axle structure, axial magnetic field, axial dimension is shorter, and efficiency is more It is high.

Brief description of the drawings

Fig. 1 is the diagrammatic cross-section of the utility model permanent-magnet synchnorous gearless dragging machine；

Fig. 2 is the A direction views in Fig. 1；

Fig. 3 is the diagrammatic cross-section of casing in the utility model permanent-magnet synchnorous gearless dragging machine；

Fig. 4 is the diagrammatic cross-section of rotor in the utility model permanent-magnet synchnorous gearless dragging machine.

In figure：1st, stator core；2nd, support；3rd, fixed plate；4th, magnet ring encoder；5th, support；6th, photoelectric encoder；7th, ring Shape decanting zone；8th, base；9th, big end cap；10th, small end cover；11st, connecting rod；12nd, four-point contact ball；13rd, single-row cylinder roller Bearing；14th, rotor；14a, rotor rim；14b, traction sheave；15th, area is strengthened；16th, brake；17th, cylinder；18th, main shaft；19、 Magnet steel；20th, rear bearing cover；21st, magnet ring.

Embodiment

Below in conjunction with the accompanying drawings, the utility model permanent-magnet synchnorous gearless dragging machine is described in detail.

As shown in figure 1, a kind of permanent-magnet synchnorous gearless dragging machine, including support 2, be fixed with support 2 main shaft 18 and The rotor 14 for also serving as traction sheave 14b is installed on the stator arranged around main shaft 18, main shaft 18, the axial end of rotor 14 is provided with The magnet steel 19 being engaged with stator.

As shown in Figure 1, Figure 3, support 2 is structure as a whole with main shaft 18, and support 2 is radially prolonged by the periphery of main shaft 18 Stretch, form plate-like, the outer rim position of plate-like is bent the semi-surrounding of rotor 14 towards the side of rotor 14.The disc plane of support 2 with Main shaft 18 is vertically arranged, and when traction machine is run, main shaft 18 is not rotated.

In order to improve the intensity of support 2, support 2 is offset at neighbouring main shaft 18 towards the direction close to rotor 14, and support 2 exists Offset area forms the annular settling zone 7 being distributed around main shaft 18, and the outer rim position of support 2 is the reinforcement area 15 thickened.

As shown in Fig. 2 the both sides of support 2 are provided with brake 16, vertical center line pair of the brake 16 relative to support 2 Claim arrangement, it is base 8 that the bottom surface of support 2, which is extended, fixes traction machine by the bolt through base 8, the top of support 2 is provided with Fixed cylinder 17 is aided in, prevents traction machine from toppling over.

As shown in figure 1, stator includes stator core 1, and the winding on stator core 1 around the home, stator is annular shape, Vertical section is rectangle, and stator core 1 is formed by the unilateral jet-bedding winding of banding silicon steel sheet, and an end face of stator core 1 uniformly divides Inserting slot is furnished with, another end face is welded with some equally distributed fixed plates 3, the end face of fixed plate 3 and the face phase of inserting slot It is parallel.Stator is fixed with support 2 by the bolt through fixed plate 3, edge and the rotor 14 of the plate-like of support 2 are mutually held in the mouth Connect, by stator surrounding in the cavity that support 2 and rotor 14 are surrounded by.

As shown in figure 4, rotor rim 14a and traction sheave 14b that rotor 14 is structure as a whole, rotor rim 14a are disk The fan-shaped magnet steel of chamfered edge is evenly distributed with shape, a rotor rim 14a end face, another end face is connected with traction sheave 14b. Rotor rim 14a outer peripheral face is traction sheave 14b braking surface, and braking surface is engaged with brake 16.

Rotor 14 is installed on the spindle 18 by two bearings mutually reclining side by side, wherein towards the side of support 2 be four Point contact ball bearing 12, dorsad the side of support 2 is single row roller bearing 13.

The front bearing retainer and rear bearing cover 20 for blocking two bearings are fixed with rotor 14, wherein front bearing retainer is located at rotor The side of 14 dorsad supports 2, rear bearing cover 20 is located at rotor 14 towards the side of support 2.Rear bearing cover 20 is bolted On rotor 14.

Front bearing retainer includes big end cap 9 and small end cover 10, and small end cover 10 is bolted on the corresponding end face of main shaft 18 On, big end cap 9 is bolted on rotor 14.Small end cover 10 covers the side that bearing leans with main shaft 18, big end cap 9 Block one end of the dorsad support 2 of main shaft 18.

Support 2 is provided with the first passage arranged along the axis of main shaft 18, and the second channel arranged that misplaced with main shaft 18； In support, dorsad the side of rotor 14 is provided with the first installation position corresponding with first passage position, and corresponding to second channel position The second installation position, the second installation position is in annular settling zone 7.

In the side of the dorsad rotor 14 of support 2 provided with two depressed areas, the first installation position and the second installation position are located respectively In corresponding depressed area, the inwall of each depressed area is equipped with installation step, and information collecting device is fixed on corresponding erecting bed On rank.

First passage runs through main shaft 18, and second channel, which runs through in support 2, first passage and second channel, to be installed simultaneously Encoder is installed at encoder, or selection one.

First installation position is used to install photoelectric encoder 6, and rotor 14 is fixation with the corresponding trigger element of photoelectric encoder 6 Connecting rod 11 on big end cap 9, connecting rod 11 is through first passage and the code-disc synchronous axial system in photoelectric encoder 6.Photoelectric coding Device 6 is fixedly mounted on the first installation position by support 5, and support 5 fastens with installation step, and is bolted to connection On support 2.

Second installation position is used to install magnet ring encoder 4, and magnet ring encoder 4 has the reading of magnetic induction (or optoelectronic induction) Head, corresponding trigger element is the magnet ring 21 (or grating ring) being fixed on rear bearing cover 20.Reading head is arranged on second channel Interior, rear bearing cover 20 is provided with the ring-shaped step arranged around main shaft 18, and magnet ring 21 (or grating ring) is fixed on ring-shaped step.

The assembling process for the permanent-magnet synchnorous gearless dragging machine that the utility model is provided is as follows：

1) stator is assembled, and support 2 is mounted on the stator core 1 with winding with guide finger, fastened with bolt；Upset makes machine Upward, stator core 1 is provided with the end face of wire casing perpendicular to main shaft 18 to main shaft 18 on seat 2.

2) rotor 14 is assembled, and rotor 14 first does dynamic balancing measurement, is installed rear bearing cover 20 and is fastened；Make installation axle after upset Upward, endoporus sensing heating assembles four-point contact ball 12 and the roller bearing 13 of single-row cylindrical 17 to the endoporus held successively, installs Big end cap without connecting rod 11 is simultaneously fastened；Normal temperature is cooled to, is overturn, rear bearing cover 20 upward, pastes magnet steel, press-fits magnet ring 21；Turn over Turn, traction sheave 14b is upward.Rotor rim 14a, traction sheave 14b groovings, coaxial with brearing bore, magnet steel face is hung down with brearing bore Directly, it is ensured that rotor 14 is parallel to stator, it is ensured that axial magnetic field air gap is uniform.

3) on trap, the main shaft 18 that rotor 14 is mounted in support 2 by guide sleeve, dress small end cover 10 is (without connecting rod 11 Big end cap does not influence the installation of small end cover 10 provided with hole is avoided) and fasten, the big end cap without connecting rod 11 is then replaced with into band The big end cap 9 of connecting rod 11, rotates traction sheave 14b without clamping stagnation.

4) other parts are assembled, support 2, which is erected, to be come, assembling photoelectric encoder 6 or magnet ring encoder 4；Brake is installed 16；Terminal box is installed.

Claims (10)

1. being provided with main shaft on a kind of permanent-magnet synchnorous gearless dragging machine, including support, the support and around main shaft arrangement The rotor of traction sheave is provided with around main axis and also served as on stator, the main shaft, and the axial end of rotor is provided with and stator The permanent magnet being engaged, it is characterised in that be provided with the first installation position in the one end of main shaft away from rotor, in support dorsad rotor one Side is provided with fixed on the information collecting device that sense rotor movement is provided with the second installation position, at least an installation position, the rotor There is the trigger element with information collecting device phase separation.

2. permanent-magnet synchnorous gearless dragging machine as claimed in claim 1, it is characterised in that the one end of the main shaft away from rotor Dorsad rotor side is equipped with depressed area with support, and first installation position and the second installation position are located at corresponding depressed area respectively It is interior.

3. permanent-magnet synchnorous gearless dragging machine as claimed in claim 2, it is characterised in that first installation position and the second peace The inwall of the corresponding depressed area in dress position is equipped with installation step, and described information harvester is fixed on corresponding installation step.

4. permanent-magnet synchnorous gearless dragging machine as claimed in claim 1, it is characterised in that the support is by main shaft periphery along footpath To stretching out, and outer rim position is bent rotor semi-surrounding towards rotor side.

5. permanent-magnet synchnorous gearless dragging machine as claimed in claim 4, it is characterised in that the outer rim position of the support is increasing Thick reinforcement area.

6. permanent-magnet synchnorous gearless dragging machine as claimed in claim 4, it is characterised in that support court at neighbouring main shaft Offset close to the direction of rotor, support forms the annular settling zone being distributed around main shaft, second installation position in offset area It is in annular settling zone.

7. permanent-magnet synchnorous gearless dragging machine as claimed in claim 1, it is characterised in that the rotor is by being arranged side by side Two row bearings are arranged on main shaft, wherein being four-point contact ball towards support side, dorsad support side is single-row cylindrical Roller bearing.

8. permanent-magnet synchnorous gearless dragging machine as claimed in claim 7, it is characterised in that be fixed with the rotor and block institute State the front bearing retainer and rear bearing cover of two row bearings, wherein front bearing retainer is located at the side of rotor dorsad support, rear bearing cover position In rotor towards the side of support.

9. permanent-magnet synchnorous gearless dragging machine as claimed in claim 8, it is characterised in that described information harvester includes position It is to be fixed on fore bearing in trigger element corresponding with the first encoder on the first encoder in the first installation position, the rotor The connecting rod covered, the connecting rod links through main shaft and with the code-disc in the first encoder.

10. permanent-magnet synchnorous gearless dragging machine as claimed in claim 8, it is characterised in that described information harvester includes Trigger element corresponding with second encoder is fixed in the rear on second encoder in the second installation position, the rotor On bearing cap.