CN212712291U

CN212712291U - Outer rotor elevator traction machine with double-support structure

Info

Publication number: CN212712291U
Application number: CN202021456181.6U
Authority: CN
Inventors: 姚国江; 闵志强; 何轶芳; 任云龙; 陆金菊; 沈华; 琚光平; 严晓; 陆娉; 勾平; 谈成隆; 钱敏刚; 沈华忠; 虞剑峰; 邵敏
Original assignee: Zhejiang Furder Diving Technology Co ltd
Current assignee: Zhejiang Furder Diving Technology Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-03-16
Anticipated expiration: 2030-07-22

Abstract

The utility model relates to an external rotor elevator hauler of two bearing structure, including casing, pivot, driving sheave, rotor, stator, rear end cap, leading bearing and rearmounted bearing. The casing includes a casing main body and a leg fixing portion. The rear end cover and the main body part of the machine shell are mutually buckled to form an assembly cavity. The front bearing and the rear bearing are respectively arranged on the main body part and the rear end cover of the shell. The rotating shaft sequentially passes through the front bearing, the assembly cavity and the rear bearing. The traction sheave is sleeved on the rotating shaft. The stator and the rotor cooperatively drive the rotating shaft to perform circumferential rotating motion. The foot fixing part is arranged under the main body part of the machine shell and is connected with the main body part of the machine shell into a whole. And a plurality of through holes for the foundation bolts to pass through are formed in the foundation fixing part. The bottom surface of the foot fixing part is milled flat. Therefore, the installation difficulty of the elevator traction machine is effectively reduced; and the front bearing and the rear bearing are always in a stable stress state in the practical application process as far as possible.

Description

Outer rotor elevator traction machine with double-support structure

Technical Field

The utility model belongs to the technical field of the elevator manufacturing technology and specifically relates to a two bearing structure's external rotor elevator hauler.

Background

The traction machine is the heart of the elevator. In the actual working process, the traction machine is used for dragging the steel wire rope, and the steel wire rope is connected with the elevator car so as to drive the elevator car to move up and down in a reciprocating manner.

In the prior art, the casing is a split structure, and is composed of a front end cover, a casing main body, and a rear end cover. The front end cover is connected and fixed with the front end face of the shell main body by means of first screws, and correspondingly, first connecting through holes for the first screws to penetrate through are formed in the front end cover. The rear end cover is connected and fixed with the rear end face of the casing main body by means of second screws, and correspondingly, second connecting through holes (as shown in fig. 1) for the second screws to penetrate are formed in the rear end cover. Because gaps are inevitably formed among the first screw, the first connecting through hole and the second screw and the second connecting through hole, the integral flatness of the bottom surfaces of the front end cover, the machine shell main body and the rear end cover is difficult to adjust, and the subsequent installation operation of the machine shell relative to the base station is difficult; in addition, it is known that a rotating shaft for driving the traction sheave to perform circumferential rotational motion is commonly supported by a front end cover and a rear end cover, and the front end cover and the rear end cover are both provided with bearings in a matching manner. The tractor inevitably produces vibration in the in-process of actually operating to very easily lead to the not hard up of first screw and second screw, and then lead to the change of front end housing and rear end housing relative height position, and then worsen the stress state of bearing, lead to bearing life to descend by a wide margin from this. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a structural design is simple, does benefit to the manufacturing and implements, and the installation difficulty degree is little, ensures that the bearing has higher life, and does benefit to the outer rotor elevator hauler of the two bearing structure of leveling.

In order to solve the technical problem, the utility model relates to a two bearing structure's external rotor elevator hauler, it includes casing, pivot, driving sheave, rotor, stator, rear end cap, leading bearing and rearmounted bearing. The casing includes a casing main body portion and a foot fixing portion. The rear end cover and the main body part of the machine shell are mutually buckled to form an assembly cavity together. The main body of the casing is provided with a first mounting hole penetrating along the front-back direction for mounting the front bearing. And a second mounting hole penetrating along the front-rear direction is formed in the rear end cover and used for mounting a rear bearing. The rotating shaft sequentially passes through the front bearing, the assembly cavity and the rear bearing. The traction sheave is detachably sleeved on the rotating shaft and performs synchronous circumferential rotation motion along with the rotating shaft. The stator and the rotor are both arranged in the assembly cavity to cooperatively drive the rotating shaft to perform circumferential rotating motion around the central axis of the rotating shaft. The foot fixing part is arranged right below the main body part of the machine shell and is connected with the main body part of the machine shell into a whole, and the outer rotor elevator traction machine with the double-support structure is integrally installed and fixed with the base; a plurality of through holes are formed in the foundation fixing portion and used for penetrating foundation bolts. The bottom surface of the foot fixing part is milled flat.

As the technical proposal of the utility model is further improved, the bottom surface planeness of the foot margin fixing part is suitable to be controlled within 0.2mm

As the utility model discloses technical scheme's further improvement is provided with on lower margin fixed part and dodges the recess. The avoiding groove is formed by upwards sinking the bottom surface of the ground foot fixing part.

As a further improvement of the technical proposal of the utility model, the casing also comprises a reinforcing rib plate. The reinforcing rib plate is connected and fixed between the main body part of the machine shell and the ground foot fixing part.

As the technical scheme of the utility model improve further, casing main part, lower margin fixed part and deep floor adopt cast mode integrated into one piece.

As the utility model discloses technical scheme's further improvement, the rear end cap is connected in order to realize dismantling of casing main part with the help of the screw. A series of connecting through holes for the screws to pass through are uniformly distributed around the periphery of the rear end cover, and correspondingly, a series of threaded holes for the screws to be screwed are formed around the rear side wall of the main body part of the shell.

As a further improvement of the technical proposal of the utility model, an annular limiting flange is arranged on the rear end cover. The annular limiting flange is formed by continuously extending the front side wall of the rear end cover forwards, and the outer diameter of the annular limiting flange is consistent with the diameter of the inner cavity of the main body part of the machine shell.

As the further improvement of the technical proposal of the utility model, the traction sheave is arranged right ahead of the main body part of the machine shell. An annular mounting seat extends backwards from the front side wall of the main body part of the machine shell. The annular mounting seat is concentric with the main body part of the machine shell and extends towards the rear end cover. The stator is sleeved and fixed on the outer side wall of the annular mounting seat.

Compare in the elevator hauler of traditional project organization the utility model discloses an among the technical scheme, it is fixed with the installation of base station that the elevator hauler is whole to be realized with the help of the casing, and the through-hole that is used for supplying rag bolt to pass through only sets up on its lower margin fixed part. And because the lower margin fixed part is the integral structure, be convenient for carry out whole mill flat operation to its bottom surface. Therefore, the installation difficulty of the elevator traction machine is effectively reduced, and the time consumption for installation is further reduced; and the front bearing and the rear bearing are always in a stable stress state in the practical application process as far as possible, so that the service life of the front bearing and the rear bearing is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view schematically showing an elevator traction machine according to the related art (only a housing portion is shown).

Fig. 2 is a schematic perspective view of the outer rotor elevator traction machine with a middle double-support structure according to the present invention.

Fig. 3 is a front view of fig. 2.

Fig. 4 is a sectional view a-a of fig. 3.

Fig. 5 is a bottom view of fig. 2.

Fig. 6 is a perspective view of a casing in the outer rotor elevator traction machine with a double-support structure according to the present invention.

Fig. 7 is a schematic perspective view of another view angle of the casing in the outer rotor elevator traction machine with the double-support structure according to the present invention.

Fig. 8 is a schematic perspective view of the rear end cap in the outer rotor elevator traction machine with double supporting structures of the present invention.

1-a machine shell; 11-a housing body portion; 111-a first mounting hole; 112-a threaded hole; 12-a ground anchor part; 121-a through hole; 122-avoiding the groove; 13-reinforcing plate; 14-annular mounting seat; 2-a rotating shaft; 3-a traction sheave; 4-a rotor; 5-a stator; 6-rear end cap; 61-a second mounting hole; 62-a coupling through hole; 63-an annular stop flange; 7-front bearing; 8-rear bearing.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The contents of the present invention will be further described in detail with reference to the specific embodiments, and fig. 2, fig. 3 and fig. 4 respectively show a schematic perspective view, a front view and a sectional view a-a of the outer rotor elevator traction machine with a middle double-support structure of the present invention, and it can be seen that the outer rotor elevator traction machine mainly comprises a housing 1, a rotating shaft 2, a traction sheave 3, a rotor 4, a stator 5, a rear end cover 6, a front bearing 7 and a rear bearing 8. The housing 1 includes a housing main body 11 and a leg fixing portion 12. The rear cover 6 and the housing body 11 are engaged with each other to form a fitting chamber together. A first mounting hole 111 penetrating in the front-rear direction is opened in the housing main body 11 for receiving the front bearing 7 (see fig. 6). A second mounting hole 61 is opened in the rear end cover 6 to penetrate in the front-rear direction, and the rear bearing 8 is fitted therein (see fig. 8). The rotating shaft 2 sequentially passes through the front bearing 7, the assembly cavity and the rear bearing 8. The traction sheave 3 is detachably sleeved on the rotating shaft 2 and performs synchronous circumferential rotation motion along with the rotating shaft. The stator 5 and the rotor 4 are both arranged in the assembly cavity so as to cooperatively drive the rotating shaft 2 to perform circumferential rotation around the central axis of the rotating shaft. The foot fixing part 12 is disposed right below the machine case main body part 11, and is connected and fixed with the machine case main body part 11 into a whole, and thereby the whole elevator traction machine and the base are installed and fixed. A plurality of through holes 121 are formed in the anchor fixing portion 12 for allowing anchor bolts to pass therethrough. The bottom surface of the leg fixing portion 12 is subjected to a milling process (as shown in fig. 6). By adopting the technical scheme for setting, the installation difficulty of the elevator traction machine is effectively reduced, the leveling of the installation position of the elevator traction machine is convenient to realize, and the total installation time is reduced; in addition, the stress state of the front bearing 7 and the stress state of the rear bearing 8 are prevented from changing in the practical application process, the front bearing and the rear bearing are ensured to be always in a stable stress state, and the service life of the front bearing and the rear bearing is prolonged.

As shown in fig. 5, the traction sheave 3 is arranged directly in front of the casing main body portion 11. An annular mounting seat 14 extends rearward from a front side wall of the cabinet main body portion 11. The annular mounting seat 14 is concentric with the cabinet main body 11 and extends toward the rear cover (as shown in fig. 7). The stator 5 is sleeved and fixed on the outer side wall of the annular mounting seat 14.

In general, it is known that the installation levelness of an elevator hoisting machine has a critical influence on the actual running state of the elevator hoisting machine itself and the pulling force of a wire rope, and thus strict requirements are imposed on the flatness of the bottom surface of the foot fixing portion 12, but the flatness may be controlled to be within 0.2mm in consideration of the manufacturability of machining and the machining cost.

As a further optimization of the structure of the outer rotor elevator hoisting machine having the above-described double support structure, the anchor fixing portion 12 may be provided with an escape groove 122. The escape groove 122 is preferably formed by upwardly recessing the bottom surface of the anchor fixing portion 12 (as shown in fig. 6), so that the contact area between the anchor fixing portion 12 and the abutment can be directly reduced, and the flatness of the bottom surface can be controlled more easily. In addition, the milling area can be greatly reduced, and the overall manufacturing cost of the casing 1 is reduced to a certain extent.

In order to improve the overall structural strength of the housing 1 and ensure good operation stability of the elevator traction machine, a reinforcing rib plate 13 may be additionally disposed between the housing main body 11 and the anchor fixing portion 12. The number of the reinforcing rib plates 13 is at least 2, and the reinforcing rib plates are symmetrically distributed on the left side and the right side of the machine shell 1 (as shown in fig. 6).

In some cases, the reinforcing rib plate 13 is preferably fixed between the main body 11 and the foot fixing portion 12 by welding.

Of course, as another modified design of the above technical solution, the main housing 11, the foot fixing portion 12 and the reinforcing rib 13 may also be integrally formed by casting. Thus, on the one hand, a high structural strength of the housing 1 is effectively ensured; on the other hand, the process of groove forming and welding is omitted, so that the manufacturing and forming cost is greatly reduced.

Generally, in order to facilitate the workshop assembly of the elevator traction machine and reduce the difficulty of subsequent repair, the rear cover 6 is preferably detachably connected to the housing main body 11 by means of screws (as shown in fig. 3 and 4). Specific embodiments are recommended as follows: a series of connecting through holes 62 (as shown in fig. 8) for the screws to pass through are uniformly distributed around the periphery of the rear end cover 6, and correspondingly, a series of threaded holes 112 (as shown in fig. 7) for the screws to screw in are formed around the rear side wall of the housing main body 11.

In order to improve the durability of the threaded hole 112 and prevent the screw thread from being worn out too early, the rear end cover 6 is preferably made of medium carbon steel or high carbon steel, and the threaded hole 112 machined in the rear end cover is subjected to thermal refining.

As can be seen from the description in the second paragraph, the rear end cap 6 supports the rear bearing 8, so the accuracy of the mounting position of the rear end cap 6 directly affects the coaxiality of the rear bearing 8 with respect to the front bearing 7, and further affects the service lives of the front bearing 7 and the rear bearing 8. In view of this, an annular stop flange 63 may also be provided on the rear end cap 6. The annular stopper flange 63 is formed by a front side wall of the rear cover 6 extending forward, and has an outer diameter corresponding to the inner diameter of the main body 11 (see fig. 4 and 8). The existence of the annular limiting flange 63 can effectively ensure the coaxiality of the rear end cover 6 relative to the machine shell 1, and further ensure the accuracy of the installation position of the rear end cover 6.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An outer rotor elevator traction machine with a double-support structure is characterized by comprising a machine shell, a rotating shaft, a traction wheel, a rotor, a stator, a rear end cover, a front bearing and a rear bearing; the shell comprises a shell main body part and a foot fixing part; the rear end cover and the main body part of the shell are buckled with each other to form an assembly cavity together; a first mounting hole penetrating along the front-back direction is formed in the main body part of the machine shell and used for mounting the front bearing; a second mounting hole penetrating along the front-rear direction is formed in the rear end cover and used for mounting the rear bearing; the rotating shaft sequentially penetrates through the front bearing, the assembly cavity and the rear bearing; the traction sheave is detachably sleeved on the rotating shaft and performs synchronous circumferential rotation motion along with the rotating shaft; the stator and the rotor are both arranged in the assembly cavity to cooperatively drive the rotating shaft to perform circumferential rotary motion around the central axis of the rotating shaft; the anchor fixing part is arranged right below the main body part of the machine shell and is connected with the main body part of the machine shell into a whole, and the outer rotor elevator traction machine with the double-support structure is integrally installed and fixed with the base; a plurality of through holes are formed in the foundation fixing part and used for allowing foundation bolts to penetrate through; the bottom surface of the ground foot fixing part is subjected to milling treatment.

2. The external rotor elevator traction machine of the dual support structure according to claim 1, wherein the flatness of the bottom surface of the anchor fixing part is controlled within 0.2 mm.

3. The outer rotor elevator traction machine with the double support structure according to claim 1, wherein an avoidance groove is provided on the anchor fixing part; the avoiding groove is formed by upwards sinking the bottom surface of the foundation fixing part.

4. The outer rotor elevator traction machine with the double support structure according to claim 3, wherein the machine shell further comprises a reinforcing rib plate; the reinforcing rib plate is connected and fixed between the main body part of the machine shell and the ground foot fixing part.

5. The outer rotor elevator traction machine with the double support structures according to claim 4, wherein the machine case main body part, the foot fixing parts and the reinforcing rib plates are integrally formed by casting.

6. The external rotor elevator traction machine of double support structure according to any one of claims 1 to 5, wherein the rear end cover is detachably attached to the housing main body part by means of a screw; a series of connecting through holes for the screws to pass through are uniformly distributed around the periphery of the rear end cover, and correspondingly, a series of threaded holes for the screws to be screwed are formed around the rear side wall of the main body part of the shell.

7. The external rotor elevator traction machine with a double support structure according to claim 6, wherein an annular limit flange is provided on the rear end cover; the annular limiting flange is formed by continuously extending the front side wall of the rear end cover forwards, and the outer diameter of the annular limiting flange is consistent with the diameter of the inner cavity of the main body part of the machine shell.

8. The outer rotor elevator traction machine of a double support structure according to any one of claims 1 to 5, wherein the traction sheave is disposed right in front of the housing main body portion; an annular mounting seat extends backwards from the front side wall of the main body part of the machine shell; the annular mounting seat is concentric with the machine shell main body part and extends towards the rear end cover; the stator is sleeved and fixed on the outer side wall of the annular mounting seat.