CN201545581U

CN201545581U - Elevator traction machine

Info

Publication number: CN201545581U
Application number: CN2009202095852U
Authority: CN
Inventors: 王涛; 包文丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-11
Filing date: 2009-09-11
Publication date: 2010-08-11
Anticipated expiration: 2019-09-11

Abstract

The utility model relates to an elevator traction machine which comprises an engine base, a stator, a rotor, a rotating frame body, a main shaft, a driving rope wheel, a brake device and a brake disc, wherein the engine base is provided with a stator mounting part of the stator, a brake device mounting part of the brake device, and a cavity part used for containing the brake device, the brake disc, the brake device mounting part; the rotating frame body is provided with a rotor mounting part of the rotor, and a driving rope wheel mounting part of the driving rope wheel; the stator and the rotor are arranged in an opposite way along the radial direction; the brake device and the brake disc as well as the stator and the rotor are distributed along the radial direction, and at least part of the brake device is positioned inside the stator and/or the rotor; and the driving rope wheel is positioned outside the elevator traction machine. The elevator driving device has the characteristics of simple structure, miniaturization, low cost and low noise and the like.

Description

Elevator traction machine

Technical field

The utility model relates to a kind of elevator traction machine.

Background technology

Existing elevator traction machine is as the disclosed elevator traction machine of Chinese invention patent (notification number CN1141775C).The electromagnet of this towing machine and brake control lever are arranged on the outside of towing machine, and act on by brake control lever on the brake wheel of towing machine outer rotor and produce braking force, thus the braking towing machine.The deficiency of this invention is: 1) because the brake wheel and the traction sheave of towing machine are positioned at the same side, and disposed adjacent, brake area is very easy to be subjected to the grease influence of steel rope like this, thereby causes the friction coefficient of brake area to reduce the influence of normal the bringing on a disaster property of operation of this elevator; 2) because drg is arranged on the outside of towing machine, the noise of drg directly externally transmits, thereby causes the noise of towing machine to increase, and towing machine is used in machine-roomless lift and will directly be had influence on the riding quality of elevator like this; 3) for reduce noise usually be with the gap between friction lining and the brake wheel be provided with very little, like this when acting on the brake wheel because of brake control lever, because the opening time of two brakings can not be consistent, so may cause brake wheel to stressed direction distortion, thereby cause another brake control lever to contact with brake wheel, thereby make the friction disc wear of another brake control lever, reduce the service life of brake control lever, and bring vibration and noise may for the operation of elevator; Simultaneously in order to guarantee that brake wheel and brake control lever have enough rigidity need design enough strong brake control lever and brake wheel, to increase the cost of towing machine like this, and, increase the moment requirement of towing machine, thereby further increase the cost of towing machine because the inertia of brake wheel increases; 4) because brake control lever and electromagnet are arranged on the outside of towing machine, cause the oad of towing machine to become big on the one hand, the axial dimension that comprises the needs of brake wheel, the height that electromagnet needs, influence the outward appearance of towing machine, this towing machine can not be applied on the machine-roomless lift product substantially, causes the parts of towing machine to increase on the other hand, the processing capacity of parts increases, and the cost of towing machine increases; 5) be installed on the rotor owing to magnet steel, and brake surface also is positioned on the rotor, when so brake control lever produces braking force to brake wheel, to produce impact to magnet steel, such impact will directly have influence on being connected of magnet steel and rotor, thereby may cause magnet steel to come off from rotor, cause serious accident, operation brings and seriously influences to elevator; 6),, be the twice that end face (two brake surfaces are arranged) brake braking force requires so the requirement of braking force is big because brake surface is the outside face of brake wheel.

The disclosed elevator machine of Chinese invention patent (notification number CN1050460C).The elevator machine of this invention has rotor disk, and the radial outside of rotor disk is provided with brake surface.Brake equipment is installed in the outside of elevator machine.The traction guide wheel is arranged on a side of rotor disk, and adjacent in brake surface; Draw guide wheel simultaneously and be arranged in the inside of elevator machine.The weak point of this invention is: 1) brake equipment is installed in the outside of elevator machine, the noise of brake equipment is directly delivered to the outside like this, cause the noise of elevator machine bigger, elevator machine is used in machine-roomless lift and will directly be had influence on the riding quality of elevator like this; 2) because brake disc directly exposes, and brake surface is subjected to the influence of koniology, moisture or greasy dirt etc. easily like this, causes the braking force instability, the oad of elevator machine becomes big simultaneously, will take more installation space; 3) because of the traction guide wheel is adjacent with brake surface, brake area is very easy to be subjected to the grease influence of steel rope like this, thereby causes the friction coefficient of brake area to reduce the influence of normal the bringing on a disaster property of operation of this elevator; 4) the traction guide wheel is arranged on the inside of elevator machine, so in a single day, drawing guide wheel and need change impossible because of reasons such as wearing and tearing, can only be to change towing machine, and the maintenance of elevator and cost of upkeep are too big like this, and the race situation of traction guide wheel is difficult to observe intuitively, thereby the maintenance difficulty.

In order to solve the noise problem of traction machine brake as described above, make the designs simplification and the miniaturization of towing machine, Chinese invention patent (notification number CN100335400C) discloses a kind of towing machine.The brake equipment of towing machine is arranged on the inside of towing machine fixed frame, and the brake axle of brake equipment acts on the brake surface of rotor and produces braking force, the braking towing machine.This invention is arranged on drg the inside of towing machine fixed frame, brake equipment is closed in the fixed frame simultaneously, the noise transmission that reduces brake equipment like this is to the outside of towing machine, and brake surface and rope sheave be separated out, and brake surface can not be subjected to the influence of steel rope grease.The weak point of this invention is: 1) for reduce noise usually be with the gap between brake axle and the brake surface be provided with very little, like this when acting on the brake surface because of brake axle, because two braking action times can not be consistent, so may cause the rotor installation portion to stressed direction distortion, thereby cause another brake axle to contact with brake surface, thereby make the friction disc wear of another brake axle, reduce the service life of brake axle, and bring vibration and noise may for the operation of elevator; Simultaneously in order to guarantee that the enough rigidity of brake surface need design enough strong rotor installation portion, the gauge that is the rotor installation portion increases, to increase the cost of towing machine like this, and because the inertia increase of rotor installation portion, increase the moment requirement of towing machine, thereby further increase the cost of towing machine; 2) even in order to guarantee the gap between brake axle and the brake surface, the necessary fine limit work of brake surface, cost of processing increases like this; 3) because the friction lining of brake axle often has abrasive dust to produce, these abrasive dusts probably drop on the brake surface, thereby the friction force instability that may cause brake equipment, normal operation generation to elevator has a strong impact on, so need clear up these abrasive dusts termly, or by anti-dandruff device these abrasive dusts are handled, do the work capacity that will increase maintenance and maintenance like this, increase the use cost of towing machine simultaneously; 4) be oppositely arranged on the rotation support frame because of brake surface and rotor installation portion, so when brake axle produces braking force to brake surface, also produce simultaneously and impact to rotor, such impact will directly have influence on rotor with the rotation support frame the rotor installation portion between be connected, cause rotor to come off from the rotation support frame, thereby cause serious accident, operation brings and seriously influences to elevator; 5) because brake surface is the inner circumferential surface of rotor installation portion,, be the twice of end face (two brake surfaces are arranged) brake equipment required braking force, increase the size and the cost of brake equipment, influence the scantling of structure of towing machine simultaneously so the requirement of braking force is big.

The utility model content

The purpose of this utility model is the above-mentioned deficiency at prior art, and a kind of simple in structure, miniaturization, cost is low and noise is little elevator traction machine are provided.

A kind of elevator traction machine, it comprises support, stator, rotor, rotation framework, main shaft, driving rope sheave, brake equipment and brake disc; Described support has the stator installation portion of described stator, has the brake equipment installation portion of described brake equipment, has the chamber portion that can hold described brake equipment, described brake disc and described brake equipment installation portion; Described rotation framework has the rotor installation portion of described rotor, has the driving rope sheave installation portion of described driving rope sheave; Described stator and described rotor are oppositely arranged in radial direction; Described brake equipment and brake disc and described stator and rotor are arranged diametrically, and brake equipment to small part is positioned at the inside of stator and/or rotor; Described driving rope sheave is positioned at the outside of elevator traction machine.

Adopt the elevator traction machine of said structure, more existing elevator traction machine has following characteristics: 1) described brake equipment is by the braking brake disc, give main shaft with brake-force transmission, glancing impact can not cause radial impact to described rotor like this, it is smaller that described rotor and being connected of described rotation framework are exerted an influence, and guarantees the safety of elevator traction machine; 2) because described brake surface can not be subjected to the influence of the brake strip abrasive dust of described brake disc, so braking force keeps stable; 3) described brake equipment is positioned at the inside of actuating device support, thus the noise of brake equipment can not transmit out substantially, thereby guarantee the quality of elevator traction machine, the noise of elevator traction machine is little; The oad of whole elevator traction machine is little simultaneously, compact conformation; 4) because two brake surfaces are arranged, thereby can reduce the requirement of the braking force of brake equipment, reduce the cost of brake equipment, the scantling of structure of brake equipment can not influence the structure design of elevator traction machine simultaneously; 5) described driving rope sheave and brake surface are kept apart fully, and described brake surface can not be subjected to the grease influence of steel rope, can not be subjected to the influence to friction face of extraneous dust or air humidity simultaneously yet; 6) because described driving rope sheave is positioned at the outside of elevator traction machine, the maintenance that drives rope sheave is easy, convenient.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Fig. 1 a is first kind of embodiment scheme drawing of the utility model;

Fig. 1 b is that the A of Fig. 1 a is to view;

Fig. 1 c is that the B of Fig. 1 a is to view;

Fig. 2 a is second kind of embodiment scheme drawing of the utility model;

Fig. 2 b is that the A of Fig. 2 a is to view;

Fig. 2 c is that the B of Fig. 2 a is to view;

Fig. 3 a is the third embodiment scheme drawing of the utility model;

Fig. 3 b is that the A of Fig. 3 a is to view;

Fig. 3 c is that the B of Fig. 3 a is to view;

Fig. 4 a is the 4th kind of embodiment scheme drawing of the utility model;

Fig. 4 b is that the A of Fig. 4 a is to view;

Fig. 4 c is that the B of Fig. 4 a is to view;

Fig. 5 a is the 5th kind of embodiment scheme drawing of the utility model;

Fig. 5 b is that the A of Fig. 5 a is to view;

Fig. 5 c is that the B of Fig. 5 a is to view;

Fig. 6 a is the 6th kind of embodiment scheme drawing of the utility model;

Fig. 6 b is that the A of Fig. 6 a is to view;

Fig. 6 c is that the B of Fig. 6 a is to view;

The specific embodiment

First kind of embodiment of the utility model as shown in Figure 1a, Fig. 1 b is that the A of Fig. 1 a is to view, Fig. 1 c is that the B of Fig. 1 a is to view, elevator traction machine comprises driving rope sheave 1, rotation framework 2, rotor 3, support 4, stator 5, main shaft 19, brake disc 8 and brake equipment, and brake equipment comprises secured core 10, mobile armature 16, magnet coil 11, spring 12, installation shaft 15.Described support 4 comprises stator installation portion 4a, the 4b of main shaft support portion, brake equipment installation portion 4c, brake surface 4c, for simplified structure, the brake surface 4c of this embodiment and brake equipment installation portion 4c are same structure, can hold the 4d of chamber portion of described brake equipment, described brake disc 8, described brake equipment installation portion 4c and described brake surface 4c.Rotation framework 2 comprises rotor installation portion 2a, drives rope sheave installation portion 2b, and main shaft 19 is fixed together with rotation framework 2.Described main shaft 19 is connected with the 4b of main shaft support portion with bearing 7 rotatably by bearing 6.Described brake disc 8 can be connected 20 with described main shaft 19 with moving axially, can move axially on main shaft 19 by connecting 20 brake discs 8, and connecting 20 brake discs 8 by this simultaneously can be delivered to described main shaft 19 with the drag friction power that brake equipment produces.

As elevator traction machine as described in Fig. 1 a, support 4 is permanently connected stator 5 together by stator installation portion 4a, and by the 4b of main shaft support portion and two bearings 6, bearing 7, support 4 links together rotatably with main shaft 19.The 4d of chamber portion of support 4 is provided with brake equipment installation portion 4c and brake surface 4c.The secured core 10 of brake equipment, mobile armature 16, magnet coil 11, installation shaft 15 and brake disc 8 are arranged in the 4d of chamber portion of support 4.Certainly secured core 10, mobile armature 16, magnet coil 11, installation shaft 15 and the brake disc 8 of brake equipment also can partly be arranged in the 4d of chamber portion of support 4.The 4d of chamber portion forms an osed top installing space by support cover plate 18, and the secured core 10 of brake equipment, mobile armature 16, magnet coil 11, installation shaft 15 and brake disc 8 are positioned at described installing space.The described chamber 4d of portion is positioned at the inside of described stator installation portion 4a, and the described chamber 4d of portion partly is positioned at the inside of described rotor 3.

As rotation framework 2 as described in Fig. 1 a by rotor installation portion 2a and as described in rotor 3 be permanently connected together, captive joint with described driving rope sheave 1 by driving rope sheave installation portion 2b.Main shaft 19 is permanently connected with described rotation framework 2, and stretches into to small part in the 4d of chamber portion of support 4.Main shaft 19 stretches into the end of the 4d of chamber portion, is connected with coder axle 13, and coder 14 is connected rotationally with coder axle 13.Described rotor 3 and described stator 5 are oppositely arranged in radial direction.Described brake equipment and brake disc 8 are arranged diametrically with described stator 5 and rotor 3, and brake equipment to small part is positioned at the inside of stator 5 and/or rotor 3.The support 4 of described elevator traction machine is provided with a shrouding 17, by shrouding 17 stator 5 and rotor 3 is enclosed in the space.Stator 5 and rotor 3 can not be subjected to the influence of external environment condition like this.The described main shaft support 4b of portion partly stretches into the inside that drives rope sheave 1.Described rotor installation portion 2a is positioned at the inside of stator installation portion 4a.Certainly stator installation portion 4a also can be designed to be positioned at the inside of rotor installation portion 2a.In order to simplify the number of parts of elevator traction machine, drive rope sheave 1, main shaft 9 and 2 integrated designs of rotation framework.

Secured core 10 as brake equipment as described in Fig. 1 a is captiveed joint with brake equipment installation portion 4c by two installation shaft 15.Mobile armature 16 is connected movably with two installation shaft 15.Brake disc 8 is between brake equipment and brake equipment installation portion 4c.Brake disc 8 both ends of the surface have friction lining 9 respectively.Brake disc 8 is connected movably with the part that main shaft 19 stretches into the 4d of chamber portion, and this connection 21 can be that spline connects, and also can be that flat key connects.The utility model elevator traction machine has two brake equipments.Two brake equipments floor plan on described brake surface 4c.Coder 14 is arranged on the midway location of two brake equipments.The braking air gap of described brake equipment is presented axially in the outside of rotor installation portion 2a, and wherein the h size shown in Fig. 1 a is greater than 0.

Has the said structure elevator traction machine, its structure is very simple, safe and reliable, described support 4 has rotary supporting part 4b, the brake equipment installation portion 4c of stator installation portion 4a, main shaft 19, can hold the 4d of chamber portion of described brake equipment, described brake disc 8, described brake equipment installation portion 4c and described brake surface 4c; Described rotation framework 2 has the rope sheave of driving installation portion 2b, rotor installation portion 2a; Described brake surface 4c keeps apart fully with driving rope sheave 1.The component part of elevator traction machine is few, simple in structure so on the one hand; On the other hand owing to have the 4d of chamber portion, hold brake equipment, brake disc 8, brake equipment installation portion 4c, brake surface 4c, brake equipment is positioned at the inside of the 4d of chamber portion fully like this, or brake equipment partly is positioned at the inside of the 4d of chamber portion, support cover plate 18 forms an osed top installing space with the 4d of chamber portion simultaneously, so the brake noise of the utility model elevator traction machine can not transmitted out substantially, described brake surface 4c can not be subjected to the influence of steel rope grease, also can not be subjected to simultaneously the influence of external environment, humidity of dust and air etc. for example, thereby the stay in grade that guarantees elevator traction machine is reliable, the noise of elevator traction machine is little, oad is little, especially axial dimension can do little, compact conformation.Littler for what the axial dimension of elevator traction machine can be done, the described chamber 4d of portion is positioned at the inside of described rotor installation portion 2a to small part, is positioned at the inside of stator installation portion 4a simultaneously at least; The described in addition main shaft support 4b of portion stretches into the inside that drives rope sheave 1 to small part.The 4b of main shaft support portion stretches into the inside that drives rope sheave 1 to small part, also can be so that the length of the cantilever support of main shaft 19 is short, thus can reduce the requirement of strength of main shaft 19.

As shown in Figure 1a as can be known, the brake surface 4c of brake equipment and brake equipment installation portion 4c are support 4 same structures, whole like this elevator traction machine is simple in structure, simultaneously the intensity of the brake surface 4c of brake equipment and brake equipment installation portion 4c can make full use of the intensity of support 4 itself, thereby can save the supporting construction of brake surface 4c, can save cost.Because brake surface 4c is the part of support 4, so do not need rotor installation portion 2a is had the requirement of any strength and stiffness, the thickness of rotor installation portion 2a can be reduced like this, thereby reduce rotor installation portion 2a and elevator traction machine cost, and owing to the inertia of rotor installation portion 2a reduces, can reduce the moment requirement of elevator traction machine, thereby further reduce the cost of elevator traction machine.Two brake equipments horizontal distribution on brake surface 4c of described elevator traction machine, brake equipment will make full use of radial space and the axial space of the 4d of chamber portion like this, guarantee brake equipment substantially to the scantling of structure of support 4 without any influence.Because of the brake surface 4c of two brake equipments is identical, and brake surface 4c is the part of support 4, so the braking maneuver of two brake equipments can not influence each other, can not exist brake equipment to move when inconsistent, and the braking maneuver of described brake equipment influences each other.Described brake disc 8 is between brake equipment and brake surface 4c, have two brake strips 9, the requirement of brake equipment braking force can reduce half like this, thereby the size of brake equipment can reduce, cost can reduce simultaneously, so the structure design of elevator traction machine is freer.For the ease of the detection of the braking air gap of brake equipment, the braking air gap of described brake equipment is presented axially in the outside of rotor installation portion 2a, and promptly the h size shown in Fig. 1 a is convenient to the 4d in chamber portion like this greater than 0, can detect the size of braking air gap.Because it is described brake surface 4c can not adhere to the abrasive dust of brake strip 9, stable thereby braking force keeps.Braking force is to act on the brake surface 4c in addition, be on the support 4, braking force is by braking brake disc 8, brake-force transmission is given on the main shaft 19, be delivered to again and drive on the rope sheave 1, glancing impact can not cause radial impact to described rotor 3 like this, can not influence described rotor 3 and produce any influence with being connected of described rotation framework 2, guarantees the safety of elevator traction machine.

Second kind of embodiment of the utility model shown in Fig. 2 a, Fig. 2 b be the A of Fig. 2 a to view, Fig. 2 c is that the B of Fig. 2 a is to view.Be that with first kind of embodiment difference of the utility model the construction profile of brake equipment is for circular.The braking air gap of brake equipment is convenient in such design, detects by the 4d of chamber portion.Therefore brake the outside that air gap needn't be arranged on rotor installation portion 2a in the axial direction.The axial dimension of whole like this elevator traction machine is can design-calculated littler.

The third embodiment of the utility model shown in Fig. 3 a, Fig. 3 b be the A of Fig. 3 a to view, Fig. 3 c is that the B of Fig. 3 a is to view.Be that with second kind of embodiment difference of the utility model brake disc 8 has two brake surface 8a and 8b, brake strip 9a, 9b lay respectively on the mobile armature 16 and secured core 10 of brake equipment, and brake disc 8 is positioned at the inside of brake equipment.Being connected of brake disc 8 and main shaft 19 20 can be that captive joint also can move axially connection.Being connected of brake disc 8 and main shaft 19 20 is captive joint like this, and this moment, the secured core 10 of brake equipment was connected with installation shaft 15 with moving axially; Brake disc 8 is connected 20 for connecting with main shaft 19 with moving axially, and then the secured core 10 of brake equipment is captiveed joint with installation shaft 15.

The 4th kind of embodiment of the utility model shown in Fig. 4 a, Fig. 4 b be the A of Fig. 4 a to view, Fig. 4 c is that the B of Fig. 4 a is to view.Be that with the third embodiment difference of the utility model 8 two end faces of brake disc have brake strip 9, brake surface 16a is positioned on the mobile armature 16, and brake surface 10a is positioned on the secured core 10.

The 5th kind of embodiment of the utility model shown in Fig. 5 a, Fig. 5 b be the A of Fig. 5 a to view, Fig. 5 c is that the B of Fig. 5 a is to view.Be that with the 4th kind of embodiment difference of the utility model brake disc 8 links together by being connected 21 with rotation framework 2, by this connect 21 with brake-force transmission on rotation framework 2.Connecting 21 can be captive joint, also can be to move axially connection.Connecting 21 is captive joint, and then secured core 10 is connected movably with installation shaft 15; Connect 21 for moving axially connection, then secured core 10 is captiveed joint with installation shaft 15.

The 6th kind of embodiment of the utility model shown in Fig. 6 a, Fig. 6 b be the A of Fig. 6 a to view, Fig. 6 c is that the B of Fig. 6 a is to view.Be that with the 5th kind of embodiment difference of the utility model main shaft 19 captives joint with support 4, main shaft 19 is a hollow shaft, and coder axle 13 passes main shaft 19 captives joint with rotation framework 2.Rotation framework 2 has the 2c of main shaft support portion.

Claims

1. elevator traction machine, it comprises support, stator, rotor, rotation framework, main shaft, driving rope sheave, brake equipment and brake disc, it is characterized in that: described support has the stator installation portion of described stator, brake equipment installation portion with described brake equipment has the chamber portion that can hold described brake equipment, described brake disc and described brake equipment installation portion; Described rotation framework has the rotor installation portion of described rotor, has the driving rope sheave installation portion of described driving rope sheave; Described stator and described rotor are oppositely arranged in radial direction; Described brake equipment and brake disc and described stator and rotor are arranged diametrically, and brake equipment to small part is positioned at the inside of stator and/or rotor; Described driving rope sheave is positioned at the outside of elevator traction machine.

2. elevator traction machine as claimed in claim 1 is characterized in that: described support and brake equipment have a brake surface respectively; On two end faces friction lining is arranged on the described brake disc; Described brake surface is positioned at described chamber portion.

3. elevator traction machine as claimed in claim 1 is characterized in that: two end faces of described brake disc have brake surface.

4. elevator traction machine as claimed in claim 1 is characterized in that: described brake equipment has two brake surfaces, and two end faces of brake disc have friction lining.

5. as arbitrary described elevator traction machine in the claim 1 to 4, it is characterized in that: described main shaft is captiveed joint with the rotation framework; Described brake disc can be connected with described main shaft with moving axially, by this connect brake disc with brake-force transmission to main shaft.

6. as claim 1 or 4 described elevator traction machines, it is characterized in that: described main shaft is captiveed joint with described rotation framework; Described brake disc is captiveed joint with described main shaft, by this connect brake disc with brake-force transmission to described main shaft.

7. as arbitrary described elevator traction machine in the claim 1,3,4, it is characterized in that: described main shaft is connected with described rotation framework; Described brake disc can move axially with described rotor installation portion and be connected or captive joint, by this connect brake disc with brake-force transmission on described rotation framework.

8. as arbitrary described elevator traction machine in the claim 1,3,4, it is characterized in that: described main shaft is captiveed joint with described support; Described brake disc can move axially with described rotor installation portion and be connected or captive joint, by this connect brake disc with brake-force transmission on described rotation framework.

9. as arbitrary described elevator traction machine in the claim 1 to 4, it is characterized in that: described chamber portion captives joint with the cover plate on being installed in described support, forms an osed top installing space.

10. elevator traction machine as claimed in claim 9 is characterized in that: described brake equipment, brake equipment installation portion, brake disc are positioned at described installing space.