CN110361040A - A kind of encoder bracket and encoder - Google Patents
A kind of encoder bracket and encoder Download PDFInfo
- Publication number
- CN110361040A CN110361040A CN201910622731.2A CN201910622731A CN110361040A CN 110361040 A CN110361040 A CN 110361040A CN 201910622731 A CN201910622731 A CN 201910622731A CN 110361040 A CN110361040 A CN 110361040A
- Authority
- CN
- China
- Prior art keywords
- encoder
- protective case
- outer sleeve
- fixedly connected
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/10—Elements for damping the movement of parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/26—Windows; Cover glasses; Sealings therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
- G01D3/036—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention belongs to Tunnel testing technical field, a kind of encoder bracket and encoder are disclosed, including encoder protective case, encoder protective case are internally provided with the accommodating space for accommodating encoder, side is provided with the shaft hole for placing shaft;The side of encoder protective case is provided with the shaft hole for stretching out the input shaft of encoder;Spring fixed seat is provided at the top of encoder protective case; one end of torsionspring is fixed on spring fixed seat; the other end of torsionspring is fixedly connected with casing; the upper end of casing is arranged in outer sleeve; the adjustable spring positioned at casing periphery is provided in outer sleeve; one end of adjustable spring and the top of casing connect, and the other end is connect with outer sleeve bottom;The fixing seat for being fixedly connected with vehicle body is provided on outer sleeve.Acquisition precision and the service life of encoder can be improved in the present invention, can be widely applied to Tunnel testing field.
Description
Technical field
The invention belongs to vehicle monitoring technical fields, and in particular to a kind of encoder bracket and encoder.
Background technique
Encoder be signal (such as bit stream) or data are worked out, be converted to can be used to communicate, transimission and storage
The equipment of signal form.Angular displacement or straight-line displacement are converted into electric signal by encoder, the former is known as code-disc, and the latter is known as code
Ruler.Contact and two kinds contactless can be divided into according to playback mode encoder;Increasing can be divided into according to working principle encoder
Two class of amount formula and absolute type.Incremental encoder is will to be displaced to be converted into periodic electric signal, then change this electric signal
At pulse is counted, the size of displacement is indicated with the number of pulse.Corresponding one of each position of absolute type encoder is determining
Digital code, therefore its indicating value is only related to the starting and ending positions of the measurement, and be independent of the intermediate process of measurement.
Its equipment working frequency needs are same with the travel speed of vehicle during the work time for the detection device of Tunnel testing vehicle
Step, it is therefore desirable to install encoder in lateral wheel, be monitored with the travel speed to vehicle.Encoder is past in the prior art
Toward being by being directly anchored on the outside of wheel of vehicle, in vehicle travel process, the vibration of vehicle body is easy to loosen encoder, thus
The Stability and veracity of encoder work is influenced, in addition, prolonged vibration also results in abrasion to encoder itself simultaneously,
Therefore it will affect the working life of encoder, that is to say, that the stability of encoder work and its side of working life and installation
Formula is closely bound up, in order to guarantee the steady operation and its durability of equipment, needs to propose a kind of encoder-mounting bracket, makes to encode
Device can reliablely and stablely work.
Summary of the invention
In order to solve the problems, such as that encoder mounting stability is poor in the prior art, the present invention overcome it is of the existing technology not
Foot, technical problem to be solved are to provide a kind of encoder bracket and encoder.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: a kind of encoder bracket, including encoder
Protective case, the encoder protective case are internally provided with the accommodating space for accommodating encoder, the encoder protective case
Side is provided with the shaft hole for placing shaft;Spring fixed seat is provided at the top of the encoder protective case;Reverse bullet
One end of spring is fixed on the spring fixed seat, and the other end of torsionspring is fixedly connected with the lower end of casing;It is described
The upper end of casing is arranged in outer sleeve, and the adjustable spring positioned at described sleeve pipe periphery is provided in the outer sleeve, described to stretch
The upper end of contracting spring is fixedly connected with described sleeve pipe, and lower end is fixedly connected with the outer sleeve;It is provided on the outer sleeve
Fixing seat, the outer sleeve are fixedly connected with vehicle body by fixing seat.
A kind of encoder bracket, further includes wheel connector, and the wheel connector includes connection shaft and vehicle
Fixed disk is taken turns, one end of the connection shaft is fixedly connected with the center of wheel fixed disk, and the wheel fixed disk be located in vehicle
It takes turns in shaft and is rotated synchronously with wheel;Encoder protective case side is fixedly installed bearing holder (housing, cover), sets in the bearing holder (housing, cover)
It is equipped with connection bearing, the input shaft end of encoder and the other end of connection shaft are separately positioned in the connection bearing.
Bearing cap is fixedly connected on the bearing holder (housing, cover) outer end face, the shaft hole is arranged in bearing cover center, the company
The other end for switching through axis is entered in bearing holder (housing, cover) by the shaft hole and is connected with bearing is connect.
The encoder protective case includes upper sleeve body and lower body, is connected between the upper sleeve body and lower body by bolt
It connects, inside forms encoder accommodating space.
It is provided with opening on the another side opposite with the shaft hole on the encoder protective case, is set in the opening
It is equipped with the cover board being fixedly connected with encoder protective case.
The fixing seat includes column anchor ear and hold-down support, and the column anchor ear is set on outer sleeve, and passes through spiral shell
Bolt fastening;The column anchor ear is fixedly connected with vehicle body by hold-down support.
The hold-down support includes the first connecting plate and the second connecting plate of T-shaped connection, first connecting plate and vehicle
Body is fixedly connected, and second connecting plate is fixedly connected with column anchor ear.
The spring fixed seat is provided centrally with threading hole, and described sleeve pipe is hollow structure, is provided on the outer sleeve
Wire hole for drawing electric wire, the signal wire of encoder passes through the threading hole at the spring fixed seat center, along torsion
Spring center, cannula center enters outer sleeve, and draws from the wire hole on outer sleeve.
The encoder protective case is sealing structure.
The invention also provides a kind of encoders, including above-mentioned encoder bracket.
Compared with the prior art, the invention has the following beneficial effects: the present invention provides a kind of encoder bracket and codings
Device, the encoder bracket include encoder protective case, and protection body is fixed on vehicle body by torsionspring and elastic telescopicing rod,
Meanwhile encoder is arranged in protective case body by connection bearing, and is turned by connection bearing and wheel connector and wheel
Axis connection substantially reduces the vibration of vehicle body caused by encoder so that the vibration that wheel generates is entirely applied on bearing
It influences;Therefore, the advantages of encoder bracket of the invention has stable structure, and shock resistance is strong, good damping effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of encoder bracket provided in an embodiment of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the partial sectional view of Fig. 1;
Fig. 4 is the structural schematic diagram of encoder protective case in the embodiment of the present invention;
Fig. 5 is the scheme of installation of adjustable spring in the embodiment of the present invention;
Fig. 6 is the structural schematic diagram of fixing seat in the embodiment of the present invention.
Wherein, 1 is encoder protective case, and 2 be spring fixed seat, and 3 be torsionspring, and 4 be casing, and 5 be outer sleeve, and 6 are
Adjustable spring, 7 be fixing seat, and 8 be upper sleeve body, and 9 be lower body, and 10 be shaft hole, and 11 be bearing holder (housing, cover), and 12 be bearing cap, and 13 are
Column anchor ear, 14 be hold-down support, and 15 be the first connecting plate, and 16 be the second connecting plate, and 17 be wire hole, and 18 connect for wheel
Part, 19 be cover board, and 20 be opening, and 21 be connection bearing, and 22 be connection shaft, and 23 be wheel fixed disk, and 24 be encoder, and 25 are
Encoder input shaft.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with specific embodiments and the drawings, to this hair
Bright technical solution is clearly and completely described, it is clear that and described embodiment is a part of the embodiments of the present invention, and
The embodiment being not all of;Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work
Under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figures 1 to 3, described the embodiment of the invention provides a kind of encoder bracket, including encoder protective case 1
1 face seal of encoder protective case, is internally provided with the accommodating space for accommodating encoder;The encoder protective case 1
Side is provided with the shaft hole 10 for placing shaft;The top of the encoder protective case 1 is provided with spring fixed seat 2;It turns round
The one end for turning spring 3 is fixed on the spring fixed seat 2, the fixed company of the other end of torsionspring 3 and the lower end of casing 4
It connects;The upper end of described sleeve pipe 4 is arranged in outer sleeve 5, fixing seat 7 is provided on the outer sleeve 5, the outer sleeve 5 passes through
Fixing seat 7 is fixedly connected with vehicle body.
Specifically, as shown in figure 5, in the present embodiment, stretching positioned at 4 periphery of described sleeve pipe is provided in the outer sleeve 5
One end of contracting spring 6, the adjustable spring 6 is connect with the top of described sleeve pipe 4, and the other end is connect with 5 bottom of outer sleeve.
Specifically, a kind of encoder bracket provided in an embodiment of the present invention, further includes wheel connector 18.As shown in figure 3,
The wheel connector includes connecting shaft 22 and wheel fixed disk 23, one end of the connection shaft 22 and wheel fixed disk 23
Center be fixedly connected.Wherein, the wheel fixed disk 23 is with rotation shaft of wheel for connecting, be located in rotation shaft of wheel and with
Wheel rotates synchronously, and then connection shaft 22 and wheel is driven to rotate synchronously.In addition, 1 side of encoder protective case is fixed
It is provided with bearing holder (housing, cover) 11, connection bearing 21, the input shaft end of encoder and connection shaft 22 are provided in the bearing holder (housing, cover) 11
The other end be separately positioned in the connection bearing 21.In addition, being fixedly connected with bearing cap on 11 outer end face of bearing holder (housing, cover)
12, the setting of shaft hole 10 is entered in 12 center of bearing cap, the other end of the connection shaft 22 by the shaft hole 10
It is connected in bearing holder (housing, cover) 11 and with bearing 21 is connect.In the present embodiment, the input shaft of encoder is arranged by connection bearing in bearing
It puts on, also, coaxially connected by connection bearing and rotation shaft of wheel, the velocity of rotation of synchro measure wheel, connecting bearing can be with
Damping is carried out to encoder, in addition, encoder protective case is by torsionspring and casing connection, casing is by adjustable spring and outside
Casing connection, outer tube are fixed on vehicle body, and the setting of two-stage spring not only can carry out damping to bracket, are substantially increased and are subtracted
Effect is shaken, the service life of encoder is improved, moreover, its stable structure, measurement is accurate.
Further, as shown in figs. 34, in the present embodiment, the encoder protective case 1 includes upper sleeve body 8 and lower body
9, it is bolted between the upper sleeve body 8 and lower body 9, inside forms encoder accommodating space.By the way that encoder is protected
Sheath is set as two parts, on the one hand can be easily installed, and on the other hand, is also convenient for dismantling protective case and overhaul to encoder
And replacement.
Further, as shown in figs. 34, opposite with the shaft hole 10 on encoder protective case 1 in the present embodiment
Opening 20 is provided on another side.As shown in figures 2-3, it is provided in the opening 20 and is fixedly connected with encoder protective case 1
Cover board 19.By open cover board 19, can in order to be observed the encoder in encoder protective case 1, detected, even with
It changes, without dismantling encoder from car body, improves overhaul efficiency.
Further, in this embodiment as shown in fig. 6, the fixing seat 7 include column anchor ear 13 and hold-down support 14,
The column anchor ear 13 is set on outer sleeve 5, and is fastened by bolts;The column anchor ear 13 passes through hold-down support 14 and vehicle
Body is fixedly connected.Specifically, the hold-down support 14 includes the first connecting plate 15 and the second connecting plate 16 of T-shaped connection, institute
It states the first connecting plate 15 to be fixedly connected with vehicle body by bolt, second connecting plate 16 is fixed by bolt and column anchor ear 13
Connection.
Further, in this embodiment 2 center of spring fixed seat and 1 upper end of encoder protective case are provided with threading
Hole, described sleeve pipe 4 is hollow structure, as shown in Fig. 2, the wire hole 17 for drawing electric wire is provided on the outer sleeve 5,
The signal wire of encoder in protective case passes through the threading hole at 2 center of spring fixed seat, along 3 center of torsionspring, set
4 center of pipe enters outer sleeve 5, and draws from the wire hole 17 on outer sleeve 5.
In the present embodiment, the encoder protective case 1 is sealing structure, and there are three opening, one is located at for setting altogether thereon
Top is closed by spring fixed seat 2, and two are located on opposite side, one of them is closed by bearing holder (housing, cover) and bearing cap,
Another is closed by cover board 19, and the structure of sealing can play a protective role to encoder, moreover, the opening of setting can be so as to
In maintenance alternate coding device and convenient for encoder data line draw.
A kind of working method of encoder bracket provided in this embodiment is as follows: encoder is mounted on encoder protective case
In after, input shaft by connection bearing and wheel connector 18 be fixedly connected with wheel, in addition, encoder is fixed at
In encoder protective case, is connected between encoder protective case and casing by torsionspring, pass through drawing between casing and outer sleeve
Stretch spring connection, outer sleeve connect with rigidity of vehicle body, then the torsionspring and extension spring being arranged can alleviate Vehicular vibration with
Shaft installation does not influence the factors such as the heart caused by encoder, improves acquisition precision and the service life of encoder.
In addition, the embodiment of the invention also provides a kind of encoders comprising encoder bracket shown in FIG. 1 to FIG. 5.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Various change out.
Claims (10)
1. a kind of encoder bracket, which is characterized in that including encoder protective case (1), set inside the encoder protective case (1)
It is equipped with the accommodating space for accommodating encoder, the side of the encoder protective case (1) is provided with for placing turning for shaft
Axis hole (10);Spring fixed seat (2) are provided at the top of the encoder protective case (1);One end fixation of torsionspring (3) is set
It sets on the spring fixed seat (2), the other end of torsionspring (3) is fixedly connected with the lower end of casing (4);Described sleeve pipe
(4) upper end setting is provided with the adjustable spring positioned at described sleeve pipe (4) periphery in the outer sleeve (5) in outer sleeve (5)
(6), the upper end with described sleeve pipe (4) of the adjustable spring (6) are fixedly connected, and lower end is fixedly connected with the outer sleeve (5);
It is provided with fixing seat (7) on the outer sleeve (5), the outer sleeve (5) is fixedly connected with vehicle body by fixing seat (7).
2. a kind of encoder bracket according to claim 1, which is characterized in that it further include wheel connector (18), it is described
Wheel connector includes connecting shaft (22) and wheel fixed disk (23), one end of connection shaft (22) and wheel fixed disk
(23) center is fixedly connected, and the wheel fixed disk (23) be located in rotation shaft of wheel and rotate synchronously with wheel;The volume
Code device protective case (1) side is fixedly installed bearing holder (housing, cover) (11), and connection bearing (21), coding are provided in the bearing holder (housing, cover) (11)
The input shaft end of device and the other end of connection shaft (22) are separately positioned in the connection bearing (21).
3. a kind of encoder bracket according to claim 2, which is characterized in that fixed on bearing holder (housing, cover) (11) outer end face
It is connected with bearing cap (12), shaft hole (10) setting is in bearing cap (12) center, the other end of connection shaft (22)
Entered in bearing holder (housing, cover) (11) by the shaft hole (10) and is connected with bearing (21) are connect.
4. a kind of encoder bracket according to claim 1, which is characterized in that the encoder protective case (1) includes upper
Body (8) and lower body (9) are bolted between the upper sleeve body (8) and lower body (9), and inside forms encoder and holds
Between emptying.
5. a kind of encoder bracket according to claim 1, which is characterized in that on the encoder protective case (1) and institute
It states and is provided with opening on the opposite another side of shaft hole (10), be provided in the opening fixed with encoder protective case (1)
The cover board (19) of connection.
6. a kind of encoder bracket according to claim 1, which is characterized in that the fixing seat (7) includes column anchor ear
(13) and hold-down support (14), the column anchor ear (13) is set on outer sleeve (5), and is fastened by bolts;The column
Anchor ear (13) is fixedly connected with vehicle body by hold-down support (14).
7. a kind of encoder bracket according to claim 6, which is characterized in that the hold-down support (14) includes T-shaped
The first connecting plate (15) and the second connecting plate (16) of connection, first connecting plate (15) is fixedly connected with vehicle body, and described the
Two connecting plates (16) are fixedly connected with column anchor ear (13).
8. a kind of encoder bracket according to claim 1, which is characterized in that spring fixed seat (2) the center setting
There is threading hole, described sleeve pipe (4) is hollow structure, and the wire hole for drawing electric wire is provided on the outer sleeve (5)
(17), the signal wire of encoder passes through the threading hole at the spring fixed seat (2) center, along torsionspring (3) center, casing
(4) center enters outer sleeve (5), and draws from the wire hole (17) on outer sleeve (5).
9. a kind of encoder bracket according to claim 1, which is characterized in that the encoder protective case (1) is sealing
Structure.
10. a kind of encoder, which is characterized in that including encoder bracket according to any one of claims 1 to 9.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910622731.2A CN110361040B (en) | 2019-07-11 | 2019-07-11 | Encoder support and encoder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910622731.2A CN110361040B (en) | 2019-07-11 | 2019-07-11 | Encoder support and encoder |
Publications (2)
Publication Number | Publication Date |
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CN110361040A true CN110361040A (en) | 2019-10-22 |
CN110361040B CN110361040B (en) | 2024-03-19 |
Family
ID=68218691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201910622731.2A Active CN110361040B (en) | 2019-07-11 | 2019-07-11 | Encoder support and encoder |
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Country | Link |
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CN (1) | CN110361040B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112923872A (en) * | 2021-01-22 | 2021-06-08 | 武汉木仓科技股份有限公司 | General angle detection device and vehicle |
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CN201900733U (en) * | 2010-11-02 | 2011-07-20 | 江苏扬力集团有限公司 | Connecting device for high-speed press machine and rotary encoder |
CN102502383A (en) * | 2011-10-16 | 2012-06-20 | 枣庄矿业(集团)付村煤业有限公司 | Double-coding mounting bracket for directly-connected low-speed lifter and transmission shafts |
CN207556565U (en) * | 2017-12-19 | 2018-06-29 | 山西省交通科学研究院 | A kind of adjustable vehicle-mounted encoder fixing device of rotation |
CN210513191U (en) * | 2019-07-11 | 2020-05-12 | 辽宁省交通规划设计院有限责任公司 | Encoder support and encoder |
-
2019
- 2019-07-11 CN CN201910622731.2A patent/CN110361040B/en active Active
Patent Citations (6)
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KR200310119Y1 (en) * | 2002-12-04 | 2003-04-08 | 주식회사 나스텍엔지니어링 | Encorder attachment device for pipe detail investigation |
WO2009072566A1 (en) * | 2007-12-07 | 2009-06-11 | Mitsubishi Electric Corporation | Vehicle speed detecting unit, and wheel mounting unit |
CN201900733U (en) * | 2010-11-02 | 2011-07-20 | 江苏扬力集团有限公司 | Connecting device for high-speed press machine and rotary encoder |
CN102502383A (en) * | 2011-10-16 | 2012-06-20 | 枣庄矿业(集团)付村煤业有限公司 | Double-coding mounting bracket for directly-connected low-speed lifter and transmission shafts |
CN207556565U (en) * | 2017-12-19 | 2018-06-29 | 山西省交通科学研究院 | A kind of adjustable vehicle-mounted encoder fixing device of rotation |
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CN110361040B (en) | 2024-03-19 |
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