CN106553950A - Traction machine and elevator - Google Patents

Abstract

The present invention provides the traction machine and elevator of the simplification of the mechanism that can realize cooling down rotation detector, traction machine (10) includes the casing (2) for being provided with stator (7), main shaft (3), rotor block (4), rope sheave (5), rotation detector (9), lid (41) and shrouding (42), rotation detector (9) is arranged on incorporating section (31), detection rotor block (4) and the rotation of rope sheave (5), and with the axle portion (9b) rotated together with rotor block (4) and rope sheave (5), lid (41) is fixed on axle portion (9b), cover the opening and the opening of bore (3a) of the through hole (21a) of rope sheave (5) or rotor block (4), and rotate together with rope sheave (5) and rotor block (4).Shrouding (42) is fixed on lid (41), and covers the peristome (41a) for being formed at lid (41), is formed with passage (42b) and fin (42a) that air passes through.

Description

Traction machine and elevator

Technical field

The present invention relates to make car carry out the traction machine and the elevator with the traction machine of lifting action.

Background technology

All the time, elevator includes the hoist cable of car, counterweight, link car and counterweight and winds the traction machine of the hoist cable. Traction machine is had main shaft, can be rotated to support on main shaft and be used for the rotor block for winding the rope sheave of hoist cable and being connected with rope sheave.This Outward, traction machine has the rotation detector of the rotary speed of detection rotor block.

In recent years, in the miniaturization and slimming for pursuing traction machine.But, if traction machine is miniaturized and is thinned, Then heat can be accumulated in traction machine, the heat dispersion for constituting the motor of traction machine is reduced.As a result, there is the temperature of motor Rise increase, the problem of unfavorable condition is produced in rotation detector.

In order to solve such problem, for example, disclose the technology as described in patent documentation 1.In patent documentation 1 In, record following traction machine, i.e. the traction machine has and is provided with the casing of stator, arranges in the position relative with stator The rotating frame for having permanent magnet and the rope sheave for being arranged on rotating frame, the main shaft supporting is connected with casing via bearing by rotating frame.

In the record of the patent documentation 1, main shaft is the hollow shape that connects to the other end of one end, with casing Receive the accommodation space of the encoder detected by the rotation to rotating frame and storage sky is communicated to from another side in connection side Between through hole.Additionally, a side of encoder axle is connected with being accommodated in accommodation space and being fixed on the encoder of casing, should The another side of encoder axle is arranged to rotate together with rotating frame, from the another side insertion through hole of main shaft.And, In accommodation space, encoder axle is provided with blade, is provided with from the another side of encoder axle in encoder axle and is communicated to receipts The air vent received in space.

Prior art literature

Patent documentation

Patent documentation 1：Japanese Unexamined Patent Publication 2012-218859 publications

The content of the invention

Invent problem to be solved

But, in the technology that patent documentation 1 is recorded, due to empty as the storage of the encoder of rotation detector in storage Between be provided with blade, so needing to be formed larger by accommodation space.Further, the encoder as rotation detector is being carried out When safeguarding, there is a problem of the blade for being configured in accommodation space become in the way, the workability of upkeep operation reduces.Further, special In the technology that sharp document 1 is recorded, need to form air vent and blade in encoder axle, the mechanism for cooling down rotation detector becomes multiple It is miscellaneous.

It is an object of the present invention to consider above-mentioned problem points, there is provided can realize what rotation detector was cooled down The simplification of mechanism and the traction machine and elevator of the raising of the workability of upkeep operation.

Technical teaching for solving the problem was

In order to solve the above problems, the purpose of the present invention is reached, the traction machine of the present invention is can to wind to link with car Hoist cable traction machine.Traction machine include being provided with the casing of stator, main shaft, rotor block, rope sheave, rotation detector, lid and Shrouding.

Main shaft is arranged on casing, the bore with insertion vertically and the incorporating section formed in bore.Rotor block is rotatable Ground by main shaft supporting, with the Magnet relative with stator.Rope sheave is arranged on rotor block, for winding hoist cable.Rotation detector sets Put in the incorporating section of main shaft, detect the rotation of rotor block and rope sheave, and with the axle portion rotated together with rotor block and rope sheave. Lid is fixed on axle portion, covers rope sheave or the opening of through hole for making main shaft insertion in insertion rotor block and opening for bore Mouthful, and rotate together with rope sheave and rotor block.Shrouding is fixed on lid, and covers the peristome for being formed at lid, is formed There is the passage and fin passed through for air.

Additionally, the elevator of the present invention is included in the car lifted in hoistway, the counterweight linked via hoist cable and car With the traction machine that car lifting is made by winding hoist cable.Additionally, traction machine uses above-mentioned traction machine.

The effect of invention

Traction machine of the invention and elevator, can realize the simplification of mechanism and the dimension cooled down to rotation detector The raising of the workability of shield operation.

Description of the drawings

Fig. 1 is the summary construction diagram of the elevator for showing schematically embodiments of the present invention example.

Fig. 2 is the plane graph of the elevator for representing embodiments of the present invention example.

Fig. 3 is the sectional view of the traction machine for representing embodiments of the present invention example.

Fig. 4 is the sectional view of the major part of the traction machine for representing embodiments of the present invention example.

Fig. 5 is the plane graph of the lid of the traction machine for representing embodiments of the present invention example.

Fig. 6 is the plane graph of the lid and shrouding of the traction machine for representing embodiments of the present invention example.

The explanation of reference

1 elevator, 2 frameworks, 3 main shafts, 3a bore, 4 rotor blocks, 5 rope sheaves, 6 arrestment mechanisms, 7 stators, 8 connecting portions, 9 rotations It is detector, 9a test sections, 9b axle portions, 9c distributions, 10 traction machines, 20 Magnet, 21 bearing housings, 21a through holes, 22 bearings, 24 oily Envelope, 31 incorporating sections, 41 lids, 41a peristomes, 41b recesses, 41c connection axle portion, 42 shroudings, 42a fins, 42b passages, 100 Hoistway, 110 cars, 130 counterweights, 140,150 follow-up pulleies, 170 hoist cables

Specific embodiment

Hereinafter, the embodiment example of the elevator and traction machine of the present invention is illustrated with reference to Fig. 1～Fig. 6.In addition, each Identical reference is marked to identical part in figure.

1. the structure of elevator

First, the structure to the elevator of embodiments of the present invention example (hereinafter referred to as " this example ") that sees figures.1.and.2 is entered Row explanation.

Fig. 1 is the summary construction diagram of the configuration example of the elevator for representing this example.

The elevator 1 of this example be the top of the hoistway 100 being formed in building with Machine Room, it is so-called inorganic Tool room elevator.As shown in figure 1, elevator 1 is included in the 100 interior car 110 for being lifted of hoistway, traction machine 10, counterweight 130, two Individual follow-up pulley 140,150 and hoist cable 170.

The bottom of car 110 is provided with rising pulley 111.Additionally, car 110 is by a pair of cars, 112 (ginseng of guide rail According to Fig. 2) guiding, lifted in hoistway 100.A pair of car guide rails 112 are arranged in hoistway 100, along hoistway 100 Above-below direction extends.

Counterweight 130 is provided with counterweight side roller 131.Counterweight 130 is guided by a pair pairs of reuse guide rails 122 (with reference to Fig. 2), Lifted in hoistway 100.A pair pairs of reuse guide rails 122 are arranged in hoistway 100 as a pair of car guide rails 112, Above-below direction in hoistway 100 extends.

One end of hoist cable 170 and the other end are fixed on the topmost of hoistway 100.Additionally, the first follow-up pulley 140 and second Follow-up pulley 150 is configured in the topmost of hoistway 100.Hoist cable 170 from the counterweight side roller 131 of counterweight 130 be inserted into first from Movable pulley 140, and, by traction machine 10, the second follow-up pulley 150, car 110 rising with the sequential volume of pulley 111 around.

Traction machine 10 is configured in the foot of hoistway 100.Additionally, the rope sheave described later 5 in traction machine 10 is wound with hoist cable 170.Additionally, as shown in Fig. 2 traction machine 10 makes rope sheave 5 configure to 110 side of car towards the opposition side of the wall of hoistway 100. And, by driving traction machine 10, rope sheave 5 rotates, and traction machine 10 makes car 110 and counterweight 130 with well-bucket side via hoist cable 170 Formula is lifted.

2. the structure of traction machine

Then, illustrate with reference to the traction machine 10 of Fig. 3～6 pair this example.

Fig. 3 is the sectional view of the traction machine 10 for representing this example.Fig. 4 is cutting for the major part of the traction machine 10 for representing this example Face figure.

As shown in figure 3, traction machine 10 has framework 2, main shaft 3, rotor block 4, rope sheave 5, arrestment mechanism 6 and stator 7.And And, the traction machine 10 of this example is the traction machine of the external-rotor-type of the outside configuration rotor block 4 of the radial direction in stator 7.Additionally, Traction machine 10 has the rotation detector 9 of the rotary speed of detection rotor block 4 and rope sheave 5 and two screens as electro-magnetic shielding cover Cover part 43a, 43b.

The framework 2 of composition casing is configured in the end side of the axial direction of main shaft 3.Framework 2 has for installing main shaft 3 The linking part 13 of shaft sleeve part 11, the installation portion 12 for fixed stator 7 and connecting axial sleeve portion 11 and installation portion 12.In shaft sleeve part 11 One end of the axial direction of chimeric main shaft 3.

Linking part 13 is provided with the projection 14 of annular shape.The other end of the projection 14 to the axial direction of the main shaft 3 of linking part 13 Portion side projects.It is fixed with the top of the other end side of the axial direction of the main shaft 3 of projection 14 and connects oil cover 15.And, connecing oily cover Spatial portion 16 is formed between 15 and linking part 13.Accumulate the oils and fatss from 24 grade leakage of oil sealing described later in spatial portion 16.

Additionally, being configured with trapped fuel portion 17 in the vicinity of the spatial portion 16 of the lower section for being configured at vertical direction.Spatial portion 16 Connected by being arranged on the intercommunicating pore 18 of linking part 13 with trapped fuel portion 17.Then, the oils and fatss in inflow space portion 16 pass through intercommunicating pore 18 flow into trapped fuel portion 17.

Installation portion 12 is provided with the outside of the radial direction of linking part 13.Installation portion 12 is of the axial direction of main shaft 3 End side is inaccessible, the recess for being shaped generally as cylindrical shape of the other end side opening.In the recess of installation portion 12, it is fixed with by layer The stator 7 that the stator coil of the folded firm plate of electromagnetism and the firm plate of electromagnetism for being wound in the stacking is constituted.

Additionally, being respectively arranged with arrestment mechanism 6 in the upper and lower of the above-below direction of framework 2.Arrestment mechanism 6 by with Rotor block described later 4 is abutted, and the spinning movement to rotor block 4 and rope sheave 5 is braked.

Main shaft 3 is formed as cylindric, bore 3a with one end insertion to the other end from axial direction.Additionally, in main shaft 3 The other end of axial direction is formed with incorporating section 31.Incorporating section 31 by by the another side of the axial direction of bore 3a of main shaft 3 to half Outside footpath, direction is expanded and is formed.Rotation detector 9 is accommodated with incorporating section 31.In addition, the structure of aftermentioned rotation detector 9.

The first shield member 43a is fixed with an end of the axial direction of main shaft 3.First shield member 43a is with plugging barrel The mode of the opening of one side of the axial direction of hole 3a is fixed on main shaft 3.First shield member 43a is made up of netted part.The One shield member 43a has the effect of the electromagnetic shielding as shielding electromagnetic wave.Additionally, the first shield member 43a is prevented in well The dust swum in road 100 and dust Jing bore 3a enter incorporating section 31.

There are the side of incorporating section 31, another i.e. axial end in the formation of main shaft 3, be rotatably mounted with rotor block 4 and rope sheave 5.

Rotor block 4 is integrally constituted by connecting portion 8 with rope sheave 5.Rotor block 4 is shaped generally as cylindrical shape.4 quilt of rotor block Insertion is fixed between the stator 7 and arrestment mechanism 6 of the installation portion 12 of framework 2.Then, rotor block 4 is relatively matched somebody with somebody with stator 7 Put.

Additionally, the internal face in the inner side of the radial direction of rotor block 4 is fixed with multiple Magnet 20.Multiple Magnet 20 along turn The compartment of terrain that the circumferentially spaced of sub-block 4 specifies is fixed.Therefore, multiple Magnet 20 and the installation portion 12 for being fixed on framework 2 are determined The compartment of terrain that son 7 separates regulation is relative.Multiple Magnet 20 alternately configure N poles and S poles along the circumferential of rotor block 4.In addition, N poles The number of Magnet 20 of number and S poles of Magnet 20 be set as identical number.

Additionally, the end of the another side in the axial direction of the main shaft 3 of rotor block 4, is conjointly provided with connecting portion 8.Connection Inner side of the portion 8 from the end of rotor block 4 to radial direction is generally perpendicularly continuously arranged.And, in the radial direction of connecting portion 8 Inner side be provided with rope sheave 5.

Rope sheave 5 is prominent to the direction contrary with rotor block 4 from the end of connecting portion 8.Rope sheave 5 is formed as cylindric.In rope Wheel 5 is wound with the hoist cable 170 shown in Fig. 1.Then, rotated by rope sheave 5 and hoist cable 170 is batched in rope sheave 5.

Additionally, being provided with bearing housing 21 on the inside of the radial direction of rope sheave 5.Bearing housing 21 is formed as cylindric, is formed There is the through hole 21a of one end insertion to the other end from axial direction.Additionally, the inwall in the through hole 21a of bearing housing 21 is provided with Bearing 22.In the through hole 21a insertion main shafts 3 of bearing housing 21.Then, bearing housing 21 via bearing 22 rotatably by main shaft 3 Axial direction the other end supporting.

Oil sealing 24 is respectively arranged with the two ends of the axial direction of the through hole 21a of bearing housing 21.Oil sealing 24 is arranged at bearing housing Between the outer peripheral face of the inwall and main shaft 3 of 21 through hole 21a.Using 24 obturation of oil sealing by main shaft 3 axial direction the other end The space formed with the through hole 21a of bearing housing 21.And, 24 obturation of oil sealing is enclosed the oils and fatss of bearing 22.

Additionally, the another side in the axial direction of bearing housing 21 is fixed with lid 41.As shown in figure 4, lid 41 is blocking axle The mode for holding the opening of the another side of the axial direction of the through hole 21a of case 21 is fixed on bearing housing 21 via fixing bolt 51.Cause This, lid 41 is relative with bore 3a of main shaft 3 and incorporating section 31.

Fig. 5 is the plane graph for representing lid 41.

As shown in Figure 4 and Figure 5, lid 41 is formed as rounded tabular.As shown in figure 5, in the radius side of lid 41 To central part be formed with recess 41b.With the incorporating section 31 that be arranged on main shaft 3 relative opposite faces of the recess 41b in lid 41 A face of opposition side be shaped generally as circle.Recess 41b is recessed from one towards incorporating section 31.

The peristome 41a of two substantially semicircle shapes is formed with recess 41b openings.In addition, the number of peristome 41a is not It is defined in two, it is also possible to form one or more than three.Additionally, central part, i.e. two in the radial direction of lid 41 Between peristome 41a, connection axle portion 41c is provided with.Axle portion 9b of rotation detector described later 9 is fixed in connection axle portion 41c.

Additionally, being provided with the multiple fixing holes for inserting the threaded portion of fixing bolt 51 in the outer edge of lid 41 41d.And, the outer edge of recess 41b is provided with the multiple fixing hole 41e for inserting the threaded portion of fixing bolt 52. Additionally, lid 41 when bearing housing 21 is fixed on towards hoistway 100 wall opposition side i.e. 110 side of car (with reference to Fig. 2).

As shown in figure 4, in the recess 41b of lid 41, it is solid via fixing bolt 52 in the way of blocking two peristome 41a Surely there are secondary shielding part 43b and shrouding 42.Therefore, bore 3a and incorporating section 31 phase of the shrouding 42 across lid 41 and main shaft 3 It is right.

Fig. 6 is the plane graph for representing lid 41 and shrouding 42.

As shown in Figure 4 and Figure 6, shrouding 42 is formed as rounded tabular.Shrouding 42 is provided with multiple fin 42a. Multiple fin 42a are equally spaced formed in the circumference of shrouding 42.Multiple fin 42a are by a part for shrouding 42 is cut simultaneously Further bending and formed.When shrouding 42 to be fixed on the recess 41b of lid 41, multiple fin 42a are to contrary with lid 41 Direction project.

Additionally, in shrouding 42, forming multiple passage 42b by forming multiple fin 42a.Because multiple fin 42a enter The air that row rotates and flows passes through from passage 42b.

Further, the multiple fixing holes for inserting the threaded portion of fixing bolt 52 are formed with the outer edge of shrouding 42 42c。

In addition, in this example, said to making shrouding 42 be correspondingly formed as circular example with the shape of recess 41b It is bright, but the shape of shrouding 42 is not limited to this.The shape of shrouding 42 can also be formed as tetragon and hexagon etc. other It is variously-shaped.In this case, the recess 41b and the shape of shrouding 42 for being formed at lid 41 is set as consistent.

Further, the example to forming multiple fin 42a by a part for shrouding 42 is cut simultaneously bending is said It is bright, but the present invention is not limited to this.For example, it is also possible to being utilized respectively different parts constitutes fin and shrouding 42, pass through Welding and the fixing meanss such as it is fastened and fixed fin is fixed on into shrouding 42.In this case it is necessary to be fixed with wing in shrouding The position of piece is formed about passage.

In addition, as in this example, so that a part for shrouding 42 to be cut and multiple fins is formed by way of bending again 42a, can cut down components number.Further, it is also possible to form passage 42b when multiple fin 42a are formed simultaneously.

Secondary shielding part 43b is arranged between shrouding 42 and the recess 41b of lid 41.Secondary shielding part 43b and One shield member 43a is the same to be made up of netted part.Secondary shielding part 43b as the first shield member 43a, with work To shield the effect of the electromagnetic shielding of electromagnetic wave.Additionally, secondary shielding part 43b is prevented from the dirt swum in hoistway 100 Angstrom and dust enter incorporating section 31 from the peristome 41a of lid 41.

Additionally, according to the traction machine 10 of this example, can be by forming recess 41b in lid 41, sealing in recess 41b configurations Plate 42 and secondary shielding part 43b, make the lower thickness of the axial direction of the main shaft 3 of traction machine 10.

In addition, in the traction machine 10 of this example, recess 41b is formed with lid 41, be configured with shrouding 42 in recess 41b With secondary shielding part 43b, but be not limited to this.For example, it is also possible to recess 41b is not set in lid 41, and in lid 41 face fixing closing plate 42 and secondary shielding part 43b in the way of covering peristome 41a.

Then, rotation detector 9 is illustrated.

As shown in figure 4, rotation detector 9 has the distribution 9c of test section 9a, axle portion 9b and test section 9a connection and does not scheme The swivel plate for showing.

Test section 9a detects the rotary speed of swivel plate by reading the chip for being formed at swivel plate.Test section 9a by Flat fixed component 53 is fixed on the incorporating section 31 for being arranged at main shaft 3.As fixed component 53, for example, it is made up of leaf spring. In addition, the contact area in order to mitigate test section 9a and main shaft 3, preferred fixed component 53 is the thin part of width.Thereby, it is possible to Suppress from main shaft 3 to be transferred to the heat of test section 9a using fixed component 53, the temperature of test section 9a can be suppressed to rise.

Axle portion 9b has been rotatably supported in test section 9a.Axle portion 9b is provided with swivel plate (not shown).Additionally, axle portion Connection axle portion 41c that lid 41 is fixed on the end of test section 9a opposition sides of 9b.As described above, lid 41 is fixed on setting In the bearing housing 21 of rope sheave 5.Therefore, axle portion 9b is rotated together with lid 41 and rope sheave 5.

In addition, as described above, the fixed component 53 that test section 9a is fixed on main shaft 3 is constituted by having resilient leaf spring. Therefore, even if the vibration produced when axle portion 9b rotates is transferred to test section 9a, it is also possible to absorbed using fixed component 53 and transmitted To the vibration of test section 9a.Thereby, it is possible to prevent from producing in the velocity measuring of test section 9a bad as axle portion 9b is vibrated Situation.

Distribution 9c is connected with test section 9a.Bore 3a of the distribution 9c by main shaft 3, from an end of the axial direction of main shaft 3 Draw in the outside of lateral bore 3a.And, the outside signals that send test section 9a detected by of the distribution 9c to traction machine 10.

Additionally, in the traction machine 10 of this example, to the example that rotor block 4, rope sheave 5 and bearing housing 21 form as one is entered Explanation is gone, but the present invention has been not limited to this.Can also for example make rotor block 4, rope sheave 5 and bearing housing 21 respectively with difference Part constitute.In addition it is also possible to bearing housing 21 is arranged on rotor block 4, rope sheave 5 is fixed on into the rotor block 4.

The action of 2-1. traction machines

Then, the action to the traction machine 10 with said structure is illustrated.

When the streaming current in the stator coil for constituting the stator 7 for being fixed on framework 2, the rotor block 4 relative with stator 7 Driving is pivoted about with main shaft 3.Therefore, the rope sheave 5 for linking with rotor block 4 via connecting portion 8 is also carried out rotation driving. Then, rope sheave 5 is rotated, and thus the hoist cable 170 wound on rope sheave 5 is moved.

Herein, rotated by rope sheave 5, the lid 41 and shrouding 42 for being fixed on the bearing housing 21 of rope sheave 5 is rotated. Rotated by shrouding 42, air-flow is produced because of the multiple fin 42a formed in shrouding 42.Then, using the air-flow, can Rotation detector 9 is cooled down.As a result, the cooling of rotation detector 9 can be carried out with simple structure.

For example, when car 110 rises, produce from the passage 42b formed in shrouding 42 and pass through secondary shielding part 43b, the peristome 41a of lid 41, incorporating section 31, bore 3a of main shaft 3 and air-flow as the first shield member 43a.Additionally, When car 110 declines, produce and above-mentioned direction cylinder i.e. from the first shield member 43a by main shaft 3 in opposite direction Air-flow as the passage 42b of hole 3a, incorporating section 31, peristome 41a, secondary shielding part 43b and shrouding 42.Thus, lead to The lifting action of car 110 is crossed, air that can be by the air in bore 3a of main shaft 3 and incorporating section 31 with outside is handed over Change.

Herein, the first shield member 43a and secondary shielding part 43b are formed as netted.Therefore, it is possible to using the first shielding Part 43a and secondary shielding part 43b, blocks dust and dust, air is passed through in bore 3a and incorporating section 31.

Additionally, the incorporating section 31 of storage rotation detector 9 is formed at 5 side of rope sheave of traction machine 10.And, as shown in Fig. 2 Rope sheave 5 towards the opposition side of the wall of hoistway 100 be 110 side of car configure.And, block the lid of the opening of incorporating section 31 41 and shrouding 42 be fixed on the side contrary with the wall of hoistway 100 i.e. 110 side of car of rope sheave 5.That is, rotation detector 9 is matched somebody with somebody Put and easily rotation detector 9 is safeguarded in the inner space side of hoistway 100, therefore the operator for being safeguarded.Its result It is, it is possible to increase the workability of the upkeep operation of rotation detector 9.

In addition, in the traction machine 10 of this example, by rope sheave 5 towards hoistway 100 inner space side configure, but this It is bright to be not limited to this, it is also possible to by rope sheave 5 towards hoistway 100 wall.In such a situation it is preferred to receive rotation detector 9 incorporating section is arranged on the end of the side contrary with rope sheave of main shaft 3.

But, in order that rotation detector 9 and fin 42a's is located proximate to improve cooling effect, preferred storage rotation The incorporating section 31 of detector 9 is arranged on the end of 5 side of rope sheave.Now, the length of the axial direction of axle portion 9b of rotation detector 9 can be made Degree is shorter.As a result, the vibration produced as axle portion 9b rotates can be suppressed, it is possible to increase the rotation of rotation detector 9 Performance.

Further, the traction machine 10 according to this example, will be formed with the lid 41 and closure peristome 41a of peristome 41a Shrouding 42 is respectively structured as different parts.And, fin 42a is formed in the shrouding 42 of the peristome 41a of closure lid 41, matches somebody with somebody Put the outside in incorporating section 31.Thus, handss are being carried out into the maintenance of rotation detector 9 from the peristome 41a insertions of lid 41 When, fin 42a will not be hindered and be safeguarded.

Additionally, the shape of fin 42a is not affected by the shape of peristome 41a and the shape of incorporating section 31 of lid 41, Various settings can be carried out.Thereby, it is possible to the appropriate position in shrouding 42, the fin 42a of appropriate shape is set, additionally it is possible to Improve the cooling effect of rotation detector 9.

Alternatively, it is also possible to lid 41 is formed as one with the shrouding 42 for being provided with fin 42a.I.e., it is also possible to receipts The relative lid 41 in portion 31 of receiving arranges fin 42a.

In addition, the present invention is not limited to address embodiment shown in the drawings, and can be without departing from the content of the invention Scope record invention purport in the range of carry out various modifications enforcement.

Claims (6)

1. a kind of traction machine, can wind the hoist cable linked with car, and the traction machine is characterised by, including：

It is provided with the casing of stator；

Main shaft, which is arranged on the casing, the bore with insertion vertically and the bore formed incorporating section；

Rotor block, its rotatably by the main shaft supporting, with the Magnet relative with the stator；

Rope sheave, which is arranged on the rotor block, for winding the hoist cable；

Rotation detector, which is arranged on the incorporating section of the main shaft, detects the rotation of the rotor block and the rope sheave, and And with the axle portion rotated together with the rotor block and the rope sheave；

Lid, which is fixed on the axle portion, cover in the rope sheave or the rotor block for making passing through for the main shaft insertion The opening and the opening of the bore of through hole, and rotate together with the rope sheave and the rotor block；With

Shrouding, which is fixed on the lid, and covers the peristome for being formed at the lid, is formed with what is passed through for air Passage and fin.

2. traction machine as claimed in claim 1, it is characterised in that：

The fin is to be processed by the part to the shrouding and formed.

3. traction machine as claimed in claim 1, it is characterised in that：

The axial end of the master is entrenched in the casing,

The rope sheave is rotatably supported in axial another end of the master,

The incorporating section is formed at axial another end of the master,

The lid and the shrouding and the incorporating section and the opening of the another side of the axial direction of the bore of the main shaft Relatively.

4. traction machine as claimed in claim 1, it is characterised in that：

The lid has the recess that can configure the shrouding.

5. traction machine as claimed in claim 1, it is characterised in that：

Shielding shielding electromagnetic waves part is configured with the two ends of the axial direction of the bore of the main shaft.

6. a kind of elevator, it is characterised in that include：

The car lifted in hoistway；

Via the counterweight that hoist cable is linked with the car；With

The traction machine of the car lifting is made by winding the hoist cable,

The traction machine includes：

It is provided with the casing of stator；

Main shaft, which is arranged on the casing, the bore with insertion vertically and the bore formed incorporating section；

Rotor block, its rotatably by the main shaft supporting, with the Magnet relative with the stator；

Rope sheave, which is arranged on the rotor block, for winding the hoist cable；

Rotation detector, which is arranged on the incorporating section of the main shaft, detects the rotation of the rotor block and the rope sheave, and And with the axle portion rotated together with the rotor block and the rope sheave；

Lid, which is fixed on the axle portion, cover in the rope sheave or the rotor block for making passing through for the main shaft insertion The opening and the opening of the bore of through hole, and rotate together with the rope sheave and the rotor block；With

Shrouding, which is fixed on the lid, and covers the peristome for being formed at the lid, is formed with what is passed through for air Passage and fin.