CN206848294U - A kind of unit head rotation-speed measuring device - Google Patents
A kind of unit head rotation-speed measuring device Download PDFInfo
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- CN206848294U CN206848294U CN201720525645.6U CN201720525645U CN206848294U CN 206848294 U CN206848294 U CN 206848294U CN 201720525645 U CN201720525645 U CN 201720525645U CN 206848294 U CN206848294 U CN 206848294U
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- unit head
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- induction band
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Abstract
The utility model discloses a kind of unit head rotation-speed measuring device, including annular grid type induction band and proximity switch, proximity switch is fixed on unit head fixture, and on the periphery outside grid type induction band；Grid type induction band includes two sensing semi-rings, two sensing semi-rings are clamped and installed on unit head tumbler, form the grid type induction band of a circumferencial direction closing, grid type induction band is along the circumferential direction provided with several grids, unit head tumbler drives grid type induction band to rotate together, and the grid of circumferencial direction is successively close proximity to switch, while proximity switch sends pulse signal successively in rotary course, and controller is fed back to, controller collects all pulse signals and calculates unit head rotating speed.Grid number is detected by proximity switch, forms pulse signal, measurement error is small, precision is high, not only ensure that the accuracy measured under dust and slurry environment, and manufacture processing is simple, versatility is good.
Description
Technical field
A kind of unit head rotation-speed measuring device is the utility model is related to, belongs to jet drill rig kind equipment technical field.
Background technology
High-pressure Spiral Spray Technology is to be crept into using jet drill rig pore-forming to the absolute altitude of stake bottom, will be stirred by high-pressure injection pump
Water under high pressure mud stream ejected from bit nozzle, the impact failure soil body, while drilling rod lift in rotation, by slurries and
Soil body action of forced stirring is mixed, and after grout cures, rotary churning pile induration is formed in the soil body, reaches the purpose of improved soil, extensively
It is general to be applied in foundation stabilization and seepage control project.
The rotary speed of unit head is as the important parameter during churning during churning, and the height of rotating speed is by direct shadow
Ring the quality of churning quality and the height of construction cost.At present, domestic jet drill rig does not possess churning rotation speed monitoring function mostly,
It is unable to at-once monitor and adjustment churning rotating speed.The helical trajectory that rotating speed is too high to cause cutting soil is overstocked, and grouting amount is excessive, increase
Construction cost；The helical trajectory that rotating speed is too low to cause cutting soil is excessively thin, and grouting amount is too low, makes soil shear failure uneven, up to not
To construction requirement.At present, the rotary speed of churning is had pointed out in some bidding documents and construction policy paper and be distinctly claimed.
At present, the measuring method of rotating speed has three kinds, first, reflecting piece is installed on tumbler, by photoelectric sensor to turning
Moving part rotating speed carries out direct measurement；Second, by the use of the original bolt head of unit head as the magnetic induction part of detection, pass through magnetic strength
Inductive sensing device carries out direct measurement；Third, in magnetic induction sensor built in unit head, gearbox number of gear teeth is measured, through conversion
Draw unit head rotating speed.
A kind of mounting structure of speed sensor of patent No. CN 202039952U, specifically includes what is be connected with engine crankshaft
Flywheel, speed probe are arranged on engine cylinder-body rear end face, and speed probe is disposed proximate to the structure of flywheel, flywheel side
Multiple signal teeths is set along upper, tach signal is solved and measures insensitive problem.
Patent No. CN 102226814A wind generator set main shafts rotating speed measurement methods and its tacho-pulse detection mechanism, including
Wind driven generation set main shaft and the ring flange for being fixed on main shaft, ring flange is provided with the bolt of circumference branch at equal intervals, fixed
Support be supported by proximity switch, the inductive head of proximity switch is corresponding with the end face of bolt, the output of proximity switch letter
Number high speed counting module is connected to, more regular inductive impulse signal can be obtained.
When carrying out tachometric survey using photoelectric sensor, higher is required to the clean-up performance of reflecting piece, and job site is grey
Dirt is more with mud, easily covers reflecting piece, and measurement error can be caused higher；Rotating speed is measured using the original bolt head of unit head,
The original Number of Bolts of unit head is limited, and when the unit head slow-speed of revolution works, measurement error is larger；And built-in measurement rotating speed mode is then
Need to customize unit head, and sensor is cured to inside unit head, it is impossible to it is general on other unit heads, and repair and installation fiber crops
It is tired.
A kind of mounting structure of speed sensor of patent No. CN 202039952U on flywheel edge, it is necessary to set multiple
Signal teeth, signal teeth and the integrated welding structure of flywheel, flywheel construction itself is changed, and repair and change inconvenience, fitted
For being not required to the inside configuration of dismounting for a long time.
Patent No. CN 102226814A wind generator set main shafts rotating speed measurement methods and its tacho-pulse detection mechanism, utilize
The existing bolt head number detection signal of rotary shaft, the more structure of bolt head number is had by oneself suitable for equipment.
Utility model content
Purpose：In order to overcome the deficiencies in the prior art, the utility model provides a kind of unit head tachometric survey dress
Put, measurement accuracy is high, measurement error is small, can in the environment of more dust and mud stably measured.
Technical scheme：In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of unit head rotation-speed measuring device, it is characterised in that：Including annular grid type induction band and proximity switch,
Proximity switch is fixed on unit head fixture, and on the periphery outside grid type induction band；
Grid type induction band includes two sensing semi-rings, and two sensing semi-rings are clamped and installed on unit head tumbler, shape
Into the grid type induction band of a circumferencial direction closing, grid type induction band is along the circumferential direction provided with several grids, unit head
Tumbler drives grid type induction band to rotate together, and the grid of circumferencial direction is successively close proximity to switch in rotary course, simultaneously
Proximity switch sends pulse signal successively, and feeds back to controller, and controller, which collects all pulse signals and calculates unit head, to be turned
Speed.
Preferably, described unit head rotation-speed measuring device, it is characterised in that：Described two sensing semi-rings are two
Individual semicircle grid type hardware.
Preferably, described unit head rotation-speed measuring device, it is characterised in that：In grid type induction band, grid
Width >=13mm, adjacent cells interval >=13mm.
Further, described unit head rotation-speed measuring device, it is characterised in that：Grid numberWherein d
For the diameter of grid type induction band, grid type induction band rotates with tumbler, in rotary course the grid of circumferencial direction according to
Secondary close proximity to switch, while proximity switch sends pulse signal successively, and feeds back to controller, and controller often receives n
Pulse signal, it is designated as unit head rotation and turns around.
Preferably, described unit head rotation-speed measuring device, it is characterised in that：In grid type induction band, grid
Length >=30mm.
Preferably, described unit head rotation-speed measuring device, it is characterised in that：The unit head tumbler is
Power head rotary shaft.
Preferably, described unit head rotation-speed measuring device, it is characterised in that：Also include installing plate, it is described to connect
Nearly switch is fixed on balladeur train by installing plate.
Preferably, described unit head rotation-speed measuring device, it is characterised in that：Also include wing bolt group, institute
Two sensing semi-rings are stated to be fixedly clamped in unit head rotary shaft by wing bolt group.
Beneficial effect：Unit head rotation-speed measuring device provided by the utility model, measurement device precision is high, measurement error
It is small, can in the environment of more dust and mud stably measured, the apparatus structure is simple, mainly by sensing semi-ring, proximity switch
Formed with installing plate, sensing semi-ring is walled structure, and two sensing semi-rings are mounted opposite together, form circumferencial direction closing
Sensing calibration tape, calibration tape has several grids, ensures that number of test points is more, improve measurement accuracy, reduce measurement and miss
Difference, firmly install, and any change is not carried out to main frame；Manufacture processing is simple, versatility is good.Can realize at-once monitor with
Adjust the purpose of churning rotating speed.
Brief description of the drawings
Fig. 1 is the scheme of installation of unit head and rotation-speed measuring device；
Fig. 2 and for the utility model be embodied schematic diagram；
In figure：11 unit head rotary shafts, 12 grating type induction bands, 13 installing plates, 14 proximity switches, 15 balladeur trains, 21 sensings
Semi-ring, 22 wing bolt groups, 23 grids.
Embodiment
The utility model is further described with reference to specific embodiment.
As shown in Figure 1 to Figure 2, it is a kind of jet drill rig kind equipment unit head rotation-speed measuring device, mainly by sensing half
Ring, proximity switch and installing plate composition, two sensing semi-rings are metal material, are clamped and installed on unit head tumbler, shape
Into the grid type induction band of circumferencial direction closing, and raster width a >=13mm, grid length b >=30mm, between adjacent cells
When c >=13mm, grid numberWherein d is the diameter of grid type induction band, and grid type induction band is with tumbler
Rotate together, the grid 23 of circumferencial direction is successively close proximity to switch, while proximity switch sends pulse successively in rotary course
Signal, and controller is fed back to, controller often receives n pulse signal, is designated as unit head rotation and turns around.
In the present embodiment, a kind of jet drill rig kind equipment unit head rotation-speed measuring device, including annular grid are proposed
Formula induction band 12, installing plate 13 and proximity switch 14, proximity switch 14 are fixed on balladeur train 15 by installing plate 13, annular grid
Form induction band 12 is made up of two sensing semi-rings 21, is fixedly clamped by wing bolt group 22 in unit head rotary shaft 11,
Grid type induction band 12 is formed, several grids 23 are shared on grid type induction band 12, unit head rotary shaft 11 drives induction band
12 rotate, and grid close proximity to switch 14, when grid and proximity switch 14 are apart from less than one centimetre, is sent pulse letter successively
Number, controller collects all pulse signals and calculates unit head rotating speed, and rotating speed is included on display interface.
During tachometric survey, make the device of proximity switch feedback pulse signal in this reality using similar grid type hardware
With in novel protected scope.
Described above is only preferred embodiment of the present utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (8)
- A kind of 1. unit head rotation-speed measuring device, it is characterised in that：Including annular grid type induction band and proximity switch,Proximity switch is fixed on unit head fixture, and on the periphery outside grid type induction band；Grid type induction band includes two sensing semi-rings, and two sensing semi-rings are clamped and installed on unit head tumbler, form one The grid type induction band of individual circumferencial direction closing, grid type induction band are along the circumferential direction provided with several grids, and unit head rotates Part drives grid type induction band to rotate together, and the grid of circumferencial direction approaches simultaneously successively close proximity to switch in rotary course Switch sends pulse signal successively, and feeds back to controller, and controller collects all pulse signals and calculates unit head rotating speed.
- 2. unit head rotation-speed measuring device according to claim 1, it is characterised in that：Described two sensing semi-rings are two Semicircle grid type hardware.
- 3. unit head rotation-speed measuring device according to claim 1, it is characterised in that：In grid type induction band, grid is wide Degree >=13mm, adjacent cells interval >=13mm.
- 4. unit head rotation-speed measuring device according to claim 3, it is characterised in that：Grid numberIts Middle d is the diameter of grid type induction band, and grid type induction band rotates with tumbler, the grid of circumferencial direction in rotary course Successively close proximity to switch, while proximity switch sends pulse signal successively, and feeds back to controller, and controller often receives n Individual pulse signal, it is designated as unit head rotation and turns around.
- 5. unit head rotation-speed measuring device according to claim 1, it is characterised in that：In grid type induction band, grid length Degree >=30mm.
- 6. unit head rotation-speed measuring device according to claim 1, it is characterised in that：The unit head tumbler is power Head rotary shaft.
- 7. unit head rotation-speed measuring device according to claim 1, it is characterised in that：Also include installing plate, it is described close Switch is fixed on balladeur train by installing plate.
- 8. unit head rotation-speed measuring device according to claim 1, it is characterised in that：Also include wing bolt group, it is described Two sensing semi-rings are fixedly clamped in unit head rotary shaft by wing bolt group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720525645.6U CN206848294U (en) | 2017-05-12 | 2017-05-12 | A kind of unit head rotation-speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720525645.6U CN206848294U (en) | 2017-05-12 | 2017-05-12 | A kind of unit head rotation-speed measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN206848294U true CN206848294U (en) | 2018-01-05 |
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ID=60795878
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720525645.6U Active CN206848294U (en) | 2017-05-12 | 2017-05-12 | A kind of unit head rotation-speed measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023093882A1 (en) * | 2021-11-28 | 2023-06-01 | 宁波道康智能科技有限公司 | Fitness apparatus, internal magnetic control device and driving module thereof, and assembly method therefor |
-
2017
- 2017-05-12 CN CN201720525645.6U patent/CN206848294U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023093882A1 (en) * | 2021-11-28 | 2023-06-01 | 宁波道康智能科技有限公司 | Fitness apparatus, internal magnetic control device and driving module thereof, and assembly method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220720 Address after: No.26 tuolanshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: JIANGSU XUGONG ENGINEERING MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 221004 26 Jinshan Road, Jinshan Bridge Economic Development Zone, Xuzhou, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right |