CN108462324B - Mounting structure of traction machine encoder - Google Patents
Mounting structure of traction machine encoder Download PDFInfo
- Publication number
- CN108462324B CN108462324B CN201810296985.5A CN201810296985A CN108462324B CN 108462324 B CN108462324 B CN 108462324B CN 201810296985 A CN201810296985 A CN 201810296985A CN 108462324 B CN108462324 B CN 108462324B
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- Prior art keywords
- encoder
- bearing
- brake hub
- end cover
- shell
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- 230000007547 defect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention discloses a mounting structure of a tractor encoder, which comprises a traction wheel, a brake hub and a shell, wherein the shell is provided with a central shaft part with a hollow structure, a bearing is arranged between the central shaft part of the shell and the brake hub, the traction wheel is fixedly connected with the brake hub, the front end of the central shaft part of the shell is provided with a bearing end cover which axially fixes the bearing, the bearing end cover is of a hollow structure, the encoder is arranged in the bearing end cover, an encoder moving part is fixed on an encoder bracket, and the encoder bracket is fixedly arranged on the front end surface of the brake hub and compresses the traction wheel. The invention is suitable for traction machines with different shell shaft diameters, not only can solve the defects of poor economy and difficult positioning when the encoder is installed in a shell front support mode in the traction machine with small shaft diameter and the difficulty that the encoder cannot be installed in a hollow shaft, but also can solve the defects of poor economy and difficult processing when the encoder is installed in the traction machine with large shell shaft diameter through reducing.
Description
Technical Field
The invention relates to elevator equipment, in particular to an installation structure of an encoder in a traction machine.
Background
Currently, most of known elevators use permanent magnet synchronous gearless outer rotor traction machines, and encoders are an indispensable part of the traction machines. Generally, the encoder is installed in a mode mainly comprising a rear-mounted installation of a machine room and a front-mounted installation of a machine room.
In a traction machine with a machine room, most of the encoders are selectively installed at the rear of a housing hole, as shown in fig. 1, with the housing hole and shaft being used to position the encoder. Although the positioning structure can effectively utilize the hollow space at the rear part of the shell, the requirements of assembling and disassembling the encoder from the front end in the traction machine without a machine room cannot be met, and therefore, the application range is limited.
In the traction machine without a machine room, the encoder is installed in various modes, and mainly comprises side installation of the encoder, installation of the encoder through a front end installation bracket of a shell, installation of the encoder in a hollow shell shaft and the like. When the encoder in the tractor without machine room is installed in the hollow shell shaft, the size of the hollow shell shaft of the tractor is required to be larger, and meanwhile, the bearing with larger inner diameter is required to be matched and selected, so that the performance of the bearing is often far higher than that of the bearing, the cost is increased, and the economical efficiency is reduced. Moreover, when the hollow inner diameter of the hollow shell shaft of the shell is large, the diameter needs to be changed to adapt to the installation of the encoder, so that the waste of materials is easily caused, and the processing and positioning difficulty of the shell is increased. Or the encoder can be installed only by adopting a mode of a front support of the shell under the condition of smaller shaft diameter of the hollow shell shaft, as shown in fig. 2, so that the space application and the economy are poor.
Disclosure of Invention
The invention aims to solve the technical problem of providing a mounting structure of a tractor encoder, which can meet the mounting requirements of various types of tractors.
In order to solve the technical problems, the mounting structure of the tractor encoder provided by the invention comprises a traction wheel, a brake hub and a shell, wherein the shell is provided with a central shaft part with a hollow structure, the central shaft part of the shell is mounted on an inner ring of a bearing, the brake hub is mounted on an outer ring of the bearing, the traction wheel is fixedly connected with the brake hub, a bearing end cover for axially fixing the bearing is mounted at the front end of the central shaft part of the shell, the bearing end cover is of a hollow structure, the encoder is mounted in the bearing end cover, a moving part of the encoder is fixed on an encoder bracket, and the encoder bracket is fixedly mounted on the front end surface of the brake hub and compresses the traction wheel.
Preferably, in the above structure, the bearing end cap and the central shaft portion of the housing are positioned by a spigot structure.
Preferably, in the above structure, the encoder bracket and the brake hub are positioned by a spigot structure.
Preferably, in the above structure, a front bearing and a rear bearing are installed between the middle shaft portion of the housing and the brake hub. Furthermore, the inner ring of the rear bearing is in clearance fit with the middle shaft part of the shell.
Preferably, in the above structure, the traction sheave and the brake hub are in interference fit.
Preferably, in the above structure, the encoder bracket, the bearing end cover, the brake hub, and the traction sheave are coaxial with a central shaft portion of the housing.
Wherein in the above structure, the bearing end cover is "[". Or the bearing end cover is of a flange plate structure.
Preferably, in the above structure, the bearing end cap is fixed to a front end of the central shaft portion of the housing by a screw.
The invention has the advantages that:
1) The encoder mounting structure is suitable for the traction machine with the small shell shaft diameter, and can effectively solve the defects of poor economy and difficult positioning caused by the way of adopting a shell front mounting bracket in the traction machine with the small shell shaft diameter and the difficulty that the encoder cannot be mounted in the hollow shaft in the traction machine with the small shell shaft diameter;
2) The encoder mounting structure is suitable for the traction machine with the large shell shaft diameter, and can effectively solve the defects of poor encoder mounting economy and difficult processing in a reducing way in the traction machine with the large shell shaft diameter;
3) The structure of the bearing end cover is improved, and the bearing end cover is better in processability relative to the shell and is coaxially positioned with the bearing, so that the coaxiality and verticality of the encoder relative to a shaft system can be better ensured, and meanwhile, the encoder bracket can protect the encoder from being impacted;
4) The invention is convenient for later maintenance and can easily assemble and disassemble the encoder in the replacement process.
Drawings
Fig. 1 is a schematic view of an encoder installed at the rear of a casing hole in a traction machine with a machine room in the prior art;
Fig. 2 is a schematic view of the encoder mounted through the front bracket in the traction machine without a machine room in the prior art;
FIG. 3 is a schematic view of the structure of the invention in which an encoder is mounted in a housing with a small housing shaft diameter;
FIG. 4 is a schematic view of the bearing end cap of FIG. 3;
FIG. 5 is a schematic structural view of an encoder bracket;
Fig. 6 is a schematic view of the present invention in which an encoder is mounted in a housing having a large housing shaft diameter.
Wherein the reference numerals are as follows:
1 is an encoder bracket; 2 is a bearing end cover; 3 is a brake hub; 4 is a traction sheave; 5 is an encoder; 6 is a bolt; 7 is a front bearing; 8 is a rear bearing; 9 is a shell.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
First embodiment
According to the first encoder mounting structure provided by the invention, as shown in fig. 3, the traction machine comprises a traction wheel 4, a brake hub 3 and a shell 9, wherein the shell 9 is provided with a hollow middle shaft part, the middle shaft part of the shell 9 is mounted on the inner ring of a bearing, the brake hub 3 is mounted on the outer ring of the bearing, and the traction wheel 4 is fixedly connected with the brake hub 3. In this embodiment, there is an interference fit between the traction sheave 4 and the brake hub 3.
In this embodiment, a front bearing 7 and a rear bearing 8 are mounted between the central shaft portion of the housing 9 and the brake hub 3. And, the inner ring of the rear bearing 8 is in clearance fit with the middle shaft part of the shell 9, and the rear bearing is mounted to the inner hole of the brake hub in a press fit manner.
In the first embodiment shown in fig. 3, since the hollow inner diameter of the central shaft portion formed by the housing 9 is small, the encoder 5 cannot be mounted in the hollow structure of the central shaft portion at this time. In order to solve the foregoing problems, a bearing end cap 2 is mounted on the front end of the central shaft portion of the housing 9, and the bearing end cap 2 is fixedly connected to the end of the central shaft portion of the housing 9 by screws. The bearing end cap 2 axially locates the bearing between the central shaft portion and the brake hub 3.
The bearing end cap 2 is of a hollow structure, and in this embodiment, the bearing end cap 2 is mainly "[" shaped, as shown in fig. 4. The encoder 5 is installed in the hollow inner cavity of the bearing end cover 2, and the moving parts of the encoder are fixed on an encoder bracket 1, so that the radial positioning and the axial positioning of the encoder are realized. The encoder 5 has a central axis which is fastened to the encoder support 1 by means of bolts 6. The signal transmission line of the encoder 5 is led out to the rear of the housing 9 through the hollow central shaft portion of the housing.
As shown in fig. 5, the encoder bracket 1 includes a circular outer ring and a cross-shaped inner truss, wherein screw holes are formed in the outer ring, and in this embodiment, four screw holes are formed in the outer ring, and are used for installing screws to fixedly connect the encoder bracket 1 and the brake hub 3, and bolt holes are formed in the center of the cross-shaped inner truss and are used for installing bolts 6 to connect the center shaft of the encoder 5 and the encoder bracket 1.
In order to ensure the installation of the bearing end cover 2 and the encoder bracket 1, the front end of the brake hub 3 is formed with a concave cavity (the middle shaft part of the shell 9 does not extend into the cavity), the bearing end cover 2 is positioned in the cavity and fixed, and meanwhile, the encoder bracket 1 is fixedly installed on the front end surface of the brake hub 3 and presses the traction sheave 4, so that when the traction sheave 4 is in interference connection with the brake hub 3, no additional axial fixation is needed.
The bearing end cap 2 and the central shaft portion of the housing 9 are positioned by a spigot structure, and as shown in fig. 3, the central shaft portion of the housing 9 is formed with a male spigot, and correspondingly, the bearing end cap 2 is formed with a female spigot.
The encoder bracket 1 and the brake hub 3 are also positioned by a spigot structure, and as shown in fig. 3, the encoder bracket 1 is formed with a male spigot, and correspondingly, the brake hub 3 is formed with a female spigot.
In the present embodiment, the housing of the encoder 5 is fastened by means of a specially designed bearing end cap 2, and the moving parts of the encoder, namely the center shaft, are locked to the encoder support 1 by means of bolts 6. The bearing end cover 2 and the encoder bracket 1 wrap the encoder 5 therein, so that the encoder 5 can be protected.
The encoder bracket 1 is arranged on the front end surface of the brake hub 3, is positioned in a spigot mode, and compresses the traction sheave 4, so that no additional axial fixation is needed when the traction sheave 4 is in interference connection with the brake hub 3.
The bearing end cover 2 is positioned with the central shaft part of the shell 9 in a spigot mode and compresses the front bearing 7, and the coaxiality can be effectively ensured because the same shaft neck (central shaft part) is adopted for positioning. Meanwhile, the encoder 5, the encoder bracket 1, the brake hub 3 and the traction wheel 4 are all coaxial with the central shaft part of the shell.
After the front bearing 7 is installed on the hole site of the brake hub 3, the front bearing 7 can be integrally hoisted and assembled during assembly, so that the assembly difficulty can be reduced while materials are saved, and the bearing end cover 2 can effectively compress the front bearing 7 to realize the axial positioning of the whole rotor.
The relevant installation steps of the traction machine applicable to the invention comprise:
The traction wheel 4 is assembled on the corresponding shaft neck of the brake hub 3 by interference fit, and the front bearing 7 and the rear bearing 8 are assembled in the hole site of the brake hub 3 before being integrally assembled;
during installation, the whole rotor assembly is integrally lifted and assembled, so that the assembly difficulty is effectively reduced, the bearing end cover 2 is installed after the rotor installation process, and the coaxiality can be ensured due to the fact that the bearing end cover 2 shares one shaft for positioning, and the front bearing 7 can be effectively pressed, so that the axial positioning of the whole rotor is realized;
And then the encoder 5 is installed, before the encoder 5 is installed, a signal transmission line of the encoder 5 is led out to the rear part of the shell 9 through a hollow shell shaft, the data transmission line is installed on the encoder 5, a center shaft of the encoder 5 is fixed on the encoder bracket 1 positioned at the spigot of the brake hub 3 through a bolt 6, the encoder 5 is plugged into a hollow cavity of the bearing end cover 2 when the encoder bracket 1 is installed, and the encoder shell is positioned in the bearing end cover 2 by screwing the expansion of a bolt tension ring.
When the traction machine needs to disassemble the encoder, the disassembling steps are as follows: the encoder 5 can be taken out by unscrewing the tension ring bolt used for fixing the encoder 5 in the bearing end cover 2 through the encoder bracket 1, unscrewing the bolt used for fixing the encoder bracket 1, taking down the encoder 5 from the encoder bracket 1 and pulling out the data transmission line of the encoder 5.
In this embodiment, the encoder mounting structure is suitable for the hauler of little casing footpath (the internal diameter of axis portion is less), and it adopts special hollow structure's bearing end cover and corresponding encoder support to integrate the encoder in bearing end cover department, and the data transmission line of encoder can be drawn forth from the casing rear end to the hollow well shaft portion of passing the casing to realize the dismouting encoder from hauler front end, effectively solve the poor and difficult shortcoming of location of economic nature that the encoder adopted the anterior installing support mode of casing brought in the hauler of little footpath, and can't realize the encoder and install the difficulty in the inside of cavity axle in the little footpath hauler.
Second embodiment
The second encoder mounting structure provided by the present invention, as shown in fig. 6, has basically the same principle as the first embodiment, except that the hollow inner diameter of the middle shaft portion formed by the housing 9 is large, and the encoder can only be mounted by adopting a reducing manner at present.
In order to solve the above problems, the bearing end cap 2 adopts a flange type structure, the encoder 5 is installed in the middle hole of the bearing end cap 2, as shown in fig. 6, the encoder 5 has a center shaft which is fixed on the encoder bracket 1 through bolts 6, thereby realizing radial positioning and axial positioning of the encoder 5. The remaining structure is substantially the same as that of the first embodiment, and thus, a description thereof will be omitted.
The bearing end cap 2 axially locates the bearing between the central shaft portion and the brake hub 3. The encoder bracket 1 is positioned at the front end of the bearing end cover 2, is fixedly arranged on the front end surface of the brake hub 3 and presses the traction sheave 4.
The bearing end cap 2 and the central shaft portion of the housing 9 are positioned by a spigot structure, and as shown in fig. 6, the central shaft portion of the housing 9 is formed with a male spigot, and correspondingly, the bearing end cap 2 is formed with a female spigot.
In this embodiment, the encoder mounting structure is applicable to the hauler of big casing diameter of axle, can solve effectively and need to solve the encoder installation poor economical efficiency and the shortcoming of difficult processing through the mode of reducing in the hauler of big casing diameter of axle.
The invention has been described in detail with reference to specific embodiments thereof, which are merely preferred embodiments of the invention and are not intended to limit the invention thereto. Equivalent substitutions and modifications of the shape and structure of the bearing end cover, the shape and structure of the brake hub, etc. by those skilled in the art without departing from the principles of the present invention should be considered to be within the technical scope of the present invention.
Claims (7)
1. The utility model provides a mounting structure of hauler encoder, the hauler includes hauler, brake hub, casing, the casing is formed with hollow structure's axis portion, the well shaft portion of casing with install front bearing and rear bearing between the brake hub, the axis portion of casing is installed in the inner circle of front bearing and the inner circle of rear bearing, the brake hub is installed in the outer lane of front bearing and rear bearing, the hauler with brake hub fixed connection, characterized in that, be clearance fit between rear bearing's inner circle and the axis portion of casing, the rear bearing is installed to brake hub hole through the pressure fit mode, the front bearing is installed in the hole site of brake hub, the front end of shaft portion installs axial fixity in the bearing end cover of bearing in the casing, the bearing end cover with the axis portion of casing is fixed through the tang structure, the front end of brake hub is formed with the indent cavity, the bearing end cover is located the cavity, the bearing compresses tightly the front end cover and is installed in the encoder support of the end cover of casing, the encoder is installed in the encoder is fixed to the end cover of the hauler.
2. The installing structure of a traction machine encoder according to claim 1, wherein the encoder bracket and the brake hub are positioned by a spigot structure.
3. The installing structure of a traction machine encoder according to claim 1, wherein the traction sheave and the brake hub are interference fit.
4. The installing structure of a traction machine encoder according to claim 1, wherein the encoder, the encoder bracket, the bearing end cover, the brake hub, and the traction sheave are all coaxial with a center shaft portion of the housing.
5. The installing structure of a traction machine encoder according to claim 1, wherein the bearing end cap is in a "[".
6. The installing structure of a traction machine encoder according to claim 1, wherein the bearing end cover is a flange structure.
7. The installing structure of a traction machine encoder according to claim 1, wherein the bearing end cap is fixed to a front end of a center shaft portion of the housing by a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296985.5A CN108462324B (en) | 2018-03-30 | 2018-03-30 | Mounting structure of traction machine encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296985.5A CN108462324B (en) | 2018-03-30 | 2018-03-30 | Mounting structure of traction machine encoder |
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| Publication Number | Publication Date |
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| CN108462324A CN108462324A (en) | 2018-08-28 |
| CN108462324B true CN108462324B (en) | 2024-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810296985.5A Active CN108462324B (en) | 2018-03-30 | 2018-03-30 | Mounting structure of traction machine encoder |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207994840U (en) * | 2018-03-30 | 2018-10-19 | 永大电梯设备（中国）有限公司 | The mounting structure of traction machine encoder |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2745902Y (en) * | 2004-07-05 | 2005-12-14 | 黄民英 | Elevator houling machine |
| JP4365345B2 (en) * | 2004-10-20 | 2009-11-18 | 三菱電機株式会社 | Hoisting machine and its installation method |
| CN201068360Y (en) * | 2007-07-11 | 2008-06-04 | 苏州通润驱动设备股份有限公司 | Thin type permanent magnetism synchronization gear wheel free traction machine |
| CN201154866Y (en) * | 2007-11-24 | 2008-11-26 | 宁波欣达电梯配件厂 | Driving gear for elevator |
| CN201220875Y (en) * | 2008-05-30 | 2009-04-15 | 宁波欣达曳引机科技有限公司 | Elevator traction machine |
| JP5856908B2 (en) * | 2012-05-31 | 2016-02-10 | 株式会社日立製作所 | Elevator hoisting machine |
| CN205709387U (en) * | 2016-03-28 | 2016-11-23 | 常熟市佳能电梯配件有限公司 | A kind of home-use elevator traction machine |
| CN205892442U (en) * | 2016-05-30 | 2017-01-18 | 宁波欣达电梯配件厂 | Encoder forward type hauler |
| CN106032238B (en) * | 2016-07-08 | 2018-08-24 | 曾海平 | A kind of mounting structure of traction machine of elevator without engine room and the replacement method for dismounting of encoder |
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2018
- 2018-03-30 CN CN201810296985.5A patent/CN108462324B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207994840U (en) * | 2018-03-30 | 2018-10-19 | 永大电梯设备（中国）有限公司 | The mounting structure of traction machine encoder |
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| CN108462324A (en) | 2018-08-28 |
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Effective date of registration: 20190726 Address after: 201615 Shanghai city Songjiang District town Jiuting Yaohan Road No. 77 Applicant after: SHANGHAI GIE EM Co.,Ltd. Address before: 201615 Shanghai, Songjiang District, No. nine new road, No. 99 Applicant before: YUNGTAY ELEVATOR EQUIPMENT (CHINA) Co.,Ltd. |
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