CN201876463U - Speed measuring device - Google Patents
Speed measuring device Download PDFInfo
- Publication number
- CN201876463U CN201876463U CN2010206300238U CN201020630023U CN201876463U CN 201876463 U CN201876463 U CN 201876463U CN 2010206300238 U CN2010206300238 U CN 2010206300238U CN 201020630023 U CN201020630023 U CN 201020630023U CN 201876463 U CN201876463 U CN 201876463U
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- measuring device
- speed measuring
- circuit board
- base
- coupling shaft
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Abstract
The utility model relates to a speed measuring device, which comprises a base and a circuit board arranged on the base. The base comprises an upper base, a lower base and a connecting shaft, and the connecting shaft is pivoted with the upper base and the lower base and is connected with a rotating shaft to be measured after penetrating through the lower base; and the connecting shaft is also provided with a group of through holes penetrating through the connecting shaft along the radial direction, the circuit board is connected with a receiving component and a transmitting component, and the receiving component and the transmitting component penetrate through the base and are respectively arranged opposite to the through holes. Since the circuit board, the receiving component and the transmitting component are compactly arranged on the base, the speed measuring device has a simple structure and a small size, and is easy to use. Moreover, the speed measuring device also comprises a shell, the base and the circuit board are both accommodated in the shell, and an output wire of the circuit board can penetrate out of the shell to be connected with the outside.
Description
Technical field
The utility model relates to the tachometric survey field, particularly a kind of rotation-speed measuring device.
Background technology
Be provided with rotation-speed measuring device in the rotating shaft of existing motor and motor car engine, monitor the rotating speed of motor and motor car engine at any time.Rotation-speed measuring device is mainly by speed probe, and the rotating speed of rotating object is converted to the electric weight output signal, and this speed probe can comprise three kinds of photoelectric tachometric transducer, capacitive tachometer transducer and variable reluctance speed probes.Wherein, photoelectric sensor is most widely used general.
Photoelectric sensor as shown in Figure 1 comprises the photovalve 3 of light source 2 and received signal, and light source 2 and photovalve 3 are contained in the outer hole of base 1 both sides; Have at least one group of light hole 6 on the core pipe 5 that can rotate in base 1, light hole 6 is corresponding with the outer hole on the base 1; The two ends of core pipe 5 are inserted in the rotating shaft to be measured by square hole 18 and square tenon axle 20.
Though above-mentioned photoelectric sensor can be widely used in the measurement of various spindle speed, its photovalve 3 exposes outside base 1, and it is unstable to cause it to use easily.
The utility model content
Fundamental purpose of the present utility model provides a kind of rotation-speed measuring device, is intended to make that the structure of this rotation-speed measuring device is compact more, easy to use and reduces the production and processing difficulty, reduces production costs, and enhances productivity.
The invention provides a kind of rotation-speed measuring device, comprise pedestal and be arranged on circuit board on the pedestal, described pedestal comprises top base, bottom base and the coupling shaft that articulates with top base, bottom base respectively, and described coupling shaft passes bottom base and is connected with rotating shaft to be measured; One group of open-work that radially runs through coupling shaft also is set on the described coupling shaft, is connected with receiving element on the described circuit board and sends part, described receiving element and transmission part all pass pedestal and are oppositely arranged with described open-work respectively.
Preferably, be respectively equipped with for described receiving element on the above-mentioned top base and send the perforation that part passes, described circuit board is arranged on the top base, and described receiving element and send part and all be connected with circuit board is vertical.
Preferably, the end that above-mentioned coupling shaft is connected with rotating shaft to be measured is provided with support slot, holds with rotating shaft to be measured for coupling shaft to be connected.
Preferably, above-mentioned receiving element and transmission part are the magnetic components and parts, and perhaps above-mentioned receiving element is that photosensitive components and parts, transmission part are light-emitting component.
Preferably, above-mentioned rotation-speed measuring device also comprises the housing of accommodating described pedestal and circuit board, be provided with the support portion of the described top base of carrying in the described housing, and described support portion inwall also is provided with several grooves, described top base sidewall is provided with the projection corresponding with described groove, described projection and described groove hold, and top base is clamped in the housing.
Preferably, an end of above-mentioned housing is provided with the line hole, and the output line of keeping supplying the circuit board on the pedestal passes.
Preferably, above-mentioned coupling shaft is connected with bearing with the articulated section of top base and bottom base respectively.
Preferably, above-mentioned top base is bigger than the diameter of coupling shaft with the diameter of bottom base.
The utility model rotation-speed measuring device is arranged on circuit board and receiving element on the pedestal compactly, makes that it is simple in structure, volume is small-sized and convenient the use.And rotation-speed measuring device also comprises housing, pedestal and circuit board all are housed in the housing, and the output line of circuit board can pass housing and is connected with extraneous.
Description of drawings
Fig. 1 is the structural representation of photoelectric tachometric transducer in the prior art;
Fig. 2 is the decomposing schematic representation of the utility model rotation-speed measuring device one embodiment;
Fig. 3 is the decomposing schematic representation of another embodiment of the utility model rotation-speed measuring device;
Fig. 4 is the package assembly synoptic diagram of another embodiment of the utility model rotation-speed measuring device;
Fig. 5 is the decomposing schematic representation of the another embodiment of the utility model rotation-speed measuring device.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 2, the utility model rotation-speed measuring device comprises pedestal 10 and is arranged on circuit board 20 on the pedestal 10.This pedestal comprises top base 11, bottom base 12 and the coupling shaft 13 that articulates with top base 11, bottom base 12 respectively, and this coupling shaft 13 passes bottom base 12 and is connected with rotating shaft (not shown) to be measured.One group of open-work 131 that radially runs through coupling shaft 13 also is set on the coupling shaft 13.Be connected with receiving element 21 on the circuit board 20 and send part 22, this receiving element 21 and transmission part 22 all pass pedestal 10 and are oppositely arranged with open-work 131 respectively.And the diameter of top base 11 and bottom base 12 is bigger than the diameter of coupling shaft 13, thereby makes that the installing space of receiving element 21 and transmission part 22 is compact more.
The principle of work of this rotation-speed measuring device is: above-mentioned coupling shaft 13 is connected with rotating shaft to be measured, thereby when rotating shaft to be measured is rotated, can drive coupling shaft 13 rotations.And receiving element 21 can only receive the signal that transmission part 22 sends from open-work 131, therefore, coupling shaft 13 whenever rotates a circle, and receiving element 21 receives twice and sends the signal that part 22 sends, promptly produce two pulse signals, the number of pulse signal is directly proportional with the rotating speed of rotating shaft to be measured.Hence one can see that, and pulse signal through circuit board output, can be obtained the rotating speed of rotating shaft to be measured.
As shown in Figure 3, Figure 4, above-mentioned top base 11 is provided with for receiving element 21 and sends perforation 111 that part 22 passes and the pivoted hole 112 that articulates for coupling shaft 13.Foregoing circuit plate 20 is arranged on the top base 11, receiving element 21 and send part 22 all with circuit board 20 vertical be connected and pass bore a hole 111 and open-work 131 over against setting.Coupling shaft 13 articulates by pivoted hole 112 and top base 11, thereby makes that coupling shaft 13 can radially rotation on top base 11.And coupling shaft 13 all is connected with bearing 14 with the articulated section of top base 11 and bottom base 12 respectively, this bearing 14 can provide better support and guide effect to the relative motion between coupling shaft 13 and the top base 11, thus make coupling shaft 13 motion more flexibly and prolong its serviceable life.
The end that above-mentioned coupling shaft 13 is connected with rotating shaft to be measured is provided with support slot 132, holds with rotating shaft to be measured for coupling shaft 13 to be connected.
Above-mentioned receiving element 21 is magnetic components and parts or photosensitive components and parts.If receiving element 21 is the magnetic components and parts, then the transmission part 22 of coupling shaft 13 settings also is the magnetic components and parts, and this rotation-speed measuring device is a rotating speed of measuring rotating shaft to be measured by the magnetic flux change of receiving element 21.When to be coupling shaft 13 with rotating shaft to be measured rotate a week, send part 22 and will change twice with magnetic flux between the receiving element 21, thereby receiving element 21 produces two pulse signals, the pulse signal according to circuit board 20 is exported just can calculate the rotating speed of acquisition rotating shaft to be measured.If receiving element 21 is photosensitive components and parts, then the transmission part 22 of coupling shaft 13 settings is light-emitting component (for example, other luminotrons such as incandescent lamp, LED), and this rotation-speed measuring device is then measured the rotating speed of rotating shaft to be measured by the light-receiving number of times of receiving element 21.When to be coupling shaft 13 with rotating shaft to be measured rotate a week, receiving element 21 can only with open-work 131 over against the position just can receive and send the light that part 22 sends, thereby receiving element 21 produces two pulse signals, according to the pulse signal of circuit board 20 outputs, just can calculate the rotating speed that obtains rotating shaft to be measured.
As shown in Figure 5, above-mentioned rotation-speed measuring device also comprises the housing 30 of accommodating pedestal 10 and circuit board 20.Housing 30 comprises upper shell 31 and lower house 32, and upper shell 31 and lower house 32 can be for being threaded or holding connection.Wherein be provided with the support portion 321 of carrying top base 11 in the lower house 32, and these support portion 321 inwalls also are provided with several grooves 322.Above-mentioned top base 11 sidewalls are provided with the projection 113 corresponding with groove 322, and this projection 113 holds with groove 322, thereby with in pedestal 10 chuckings and the housing 30, make pedestal 10 can relatedly not rotate when coupling shaft 13 rotates with rotating shaft to be measured.And its inwall of ring is provided with the stop section (not shown) on the upper shell 31, and with after lower house 32 is fixedlyed connected, this stop section holds pedestal 11 just, thereby prevents that pedestal 1 from moving up and down at housing 30 at upper shell 31.
Also be provided with line hole 311 on the above-mentioned upper shell 31, the output line that can keep supplying the circuit board 20 on the pedestal 11 passes, thereby can export the measuring-signal that circuit board 20 produces to surveying instrument better.
The inwall of above-mentioned lower house 32 is provided with the female thread structure (not shown), can carry out internal thread with rotating shaft to be measured for coupling shaft 13 and be connected.
Above-mentioned rotating shaft to be measured can directly be connected with coupling shaft 13, also can connect indirectly by stationary installation.For example, this stationary installation is a belt pulley, this belt pulley held with coupling shaft 13 be connected, rotating shaft to be measured then is connected with belt pulley by belt, thereby make rotating shaft to be measured rotate and drive the belt pulley rotation by belt, further drive with stationary installation and hold coupling shaft 13 rotations that are connected, in like manner can measure the rotating speed of rotating shaft to be measured.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (8)
1. rotation-speed measuring device, it is characterized in that, comprise pedestal and be arranged on circuit board on the pedestal, described pedestal comprises top base, bottom base and the coupling shaft that articulates with top base, bottom base respectively, and described coupling shaft passes bottom base and is connected with rotating shaft to be measured; One group of open-work that radially runs through coupling shaft also is set on the described coupling shaft, is connected with receiving element on the described circuit board and sends part, described receiving element and transmission part all pass pedestal and are oppositely arranged with described open-work respectively.
2. rotation-speed measuring device according to claim 1, it is characterized in that, be respectively equipped with for described receiving element on the described top base and send the perforation that part passes, described circuit board is arranged on the top base, and described receiving element and send part and all be connected with circuit board is vertical.
3. rotation-speed measuring device according to claim 1 is characterized in that, the end that described coupling shaft is connected with rotating shaft to be measured is provided with support slot, holds with rotating shaft to be measured for coupling shaft to be connected.
4. according to each described rotation-speed measuring device in the claim 1 to 3, it is characterized in that described receiving element is the magnetic components and parts with sending part, perhaps described receiving element is that photosensitive components and parts, described transmission part are light-emitting component.
5. according to each described rotation-speed measuring device in the claim 1 to 3, it is characterized in that, also comprise the housing of accommodating described pedestal and circuit board, be provided with the support portion of the described top base of carrying in the described housing, and described support portion inwall also is provided with several grooves, described top base sidewall is provided with the projection corresponding with described groove, and described projection and described groove hold, and top base is clamped in the housing.
6. rotation-speed measuring device according to claim 5 is characterized in that, an end of described housing is provided with the line hole, and the output line of keeping supplying the circuit board on the pedestal passes.
7. rotation-speed measuring device according to claim 1 is characterized in that, described coupling shaft is connected with bearing with the articulated section of top base and bottom base respectively.
8. rotation-speed measuring device according to claim 1 is characterized in that, described top base is bigger than the diameter of coupling shaft with the diameter of bottom base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206300238U CN201876463U (en) | 2010-11-29 | 2010-11-29 | Speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206300238U CN201876463U (en) | 2010-11-29 | 2010-11-29 | Speed measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876463U true CN201876463U (en) | 2011-06-22 |
Family
ID=44164379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206300238U Expired - Fee Related CN201876463U (en) | 2010-11-29 | 2010-11-29 | Speed measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201876463U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980836A (en) * | 2012-12-25 | 2013-03-20 | 徐良 | Rotation-type on-line viscometer |
| CN106841653A (en) * | 2017-03-29 | 2017-06-13 | 湖南湘依铁路机车电器股份有限公司 | A kind of locomotive tach signal shaft end output intent and device |
-
2010
- 2010-11-29 CN CN2010206300238U patent/CN201876463U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980836A (en) * | 2012-12-25 | 2013-03-20 | 徐良 | Rotation-type on-line viscometer |
| CN102980836B (en) * | 2012-12-25 | 2015-05-13 | 徐良 | Rotation-type on-line viscometer |
| CN106841653A (en) * | 2017-03-29 | 2017-06-13 | 湖南湘依铁路机车电器股份有限公司 | A kind of locomotive tach signal shaft end output intent and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20121129 |