CN214224234U

CN214224234U - Photoelectric signal transmitter

Info

Publication number: CN214224234U
Application number: CN202120684410.8U
Authority: CN
Inventors: 周成林; 谢元云; 叶多; 吴春燕; 左毅; 徐志煜; 张智友
Original assignee: Chongqing Endurance Industry Stock Co Ltd
Current assignee: Chongqing Endurance Industry Stock Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-09-17
Anticipated expiration: 2031-04-02

Abstract

The utility model belongs to the technical field of signaling devices, and particularly discloses a photoelectric signaling device, which comprises a top cover, a shell and a base, wherein a supporting table is arranged in the shell, and a code disc assembly and a coupling assembly are arranged on the supporting table; the coded disc assembly comprises an inner rotating shaft, a coded disc, a first magnetic steel seat and first magnetic steel, the coded disc and the first magnetic steel seat are both fixed on the inner rotating shaft, the inner rotating shaft is rotatably connected to a support table, a light source plate located below the coded disc is arranged on the support table, a signaling plate located above the coded disc is fixed in the shell, and the light source plate is in electrical signal connection with the signaling plate; the coupling assembly comprises a coupling, an outer rotating shaft, a second magnetic steel seat and second magnetic steel, the outer rotating shaft is rotatably connected with the supporting table, the coupling is fixed at the bottom of the outer rotating shaft, the second magnetic steel seat is fixed on the outer rotating shaft, the second magnetic steel is fixed at the top of the second magnetic steel seat, and the first magnetic steel and the second magnetic steel are attracted. Adopt the utility model discloses a scheme has improved signal sender resolution ratio, and then has improved the repeatability of flowmeter.

Description

Photoelectric signal transmitter

Technical Field

The utility model belongs to the technical field of the signaling device, concretely relates to photoelectric type signaling device.

Background

The transmitter is an important component of a flow meter product matched with the transmitter in the aviation fuel market, is used as a core sensor of the flow meter, and is used for converting measured flow of different fluid media in metering chambers of the flow meter with different calibers and different discharge capacities into pulse electric signals and outputting the pulse electric signals to an intelligent flow meter capable of displaying the volume and the quantity of the measured flow.

During the use of flow meters, the following problems are gradually found: (1) along with the increase of the caliber and the discharge capacity of the flowmeter, the pulse equivalent of a metering chamber in the flowmeter corresponding to the signal transmitter is increased (the resolution of the signal transmitter is reduced), and because the error number of the output signals of the signal transmitter is inevitable in the digital quantization process, namely, the calibration of the flowmeter is greatly floated every time, the integral repeatability of the flowmeter is poor; (2) in the range of the existing magneto-resistance signaling principle, in order to achieve proper pulse equivalent (proper signal transmitter resolution), an imported signal transmitter with higher cost has to be adopted; (3) in the actual use process, when one part of the transmitter is damaged, the whole transmitter is generally required to be replaced, and the transmitter is extremely inconvenient to disassemble and assemble in the replacement process; (4) the signal transmitter is generally an explosion-proof and explosion-proof product, and needs to seal an explosion-proof and explosion-proof cavity, so that the fixing and placement of parts in the cavity become a technical problem.

Aiming at the problems, a magneto-resistance signaling technology can be adopted, the problems are solved by improving the resolution of the signaling device, but due to the limitation of the structure of the signaling device and the magneto-resistance signaling technology, the resolution is difficult to be improved to a certain degree, and the market demand at the current stage cannot be met. Based on this, this application provides a photoelectric type signal transmitter, solves and adopts the magnetic resistance signal transmission technique, and the resolution ratio is difficult to continue the problem that improves.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model provides a photoelectric type signaling device to adopt the magnetic resistance to send out the signaling technique among the solution prior art, resolution ratio is difficult to continue the problem that improves.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a photoelectric signal transmitter comprises a top cover, a shell and a base which are sequentially detachably connected, wherein a supporting table is arranged in the shell, the supporting table divides the shell into an inner cavity positioned above and an outer cavity positioned below, and a coded disc assembly positioned in the inner cavity and a coupling assembly positioned in the outer cavity are arranged on the supporting table; the coded disc assembly comprises an inner rotating shaft, a coded disc, a first magnetic steel base and first magnetic steel, the coded disc and the first magnetic steel base are both fixed on the inner rotating shaft, the inner rotating shaft is rotatably connected to the supporting table, and the first magnetic steel is fixed at the bottom of the first magnetic steel base; a light source board positioned below the code disc is arranged on the support table, a signaling board positioned above the code disc is fixed in the shell, and the light source board is in electrical signal connection with the signaling board; the coupling assembly comprises a coupling, an outer rotating shaft, a second magnetic steel seat and second magnetic steel, the outer rotating shaft is rotatably connected with the supporting table, the coupling is fixed at the bottom of the outer rotating shaft, the second magnetic steel seat is fixed on the outer rotating shaft, the second magnetic steel is fixed at the top of the second magnetic steel seat, and the first magnetic steel and the second magnetic steel are attracted.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the scheme adopts the photoelectric integrated sensing and signaling technology, realizes the integration of electronic elements such as the light source board, the signaling board and the like, and the light source board can receive bright and dark light signals through the rotation of the code wheel, accurately transmits the light signals to the signaling board and outputs the light signals as corresponding pulse signals; through the verification of experiment, this scheme of adoption in with original technical scheme (magnetic resistance signaling) signal sender resolution ratio from every 6 pulses rise to every 80 pulses of circle, the pulse equivalent has fallen to 0.085 from 1.13, consequently the signal sender of this scheme of adoption has reduced the pulse equivalent, has improved signal sender resolution ratio, and then has improved the repeatability of flowmeter.

2. The resolution of the signal transmitter in the scheme depends on the number of code channels on the code wheel, and the code wheel of the magneto-resistance signal transmitter in the prior art limits the number of the code channels due to the size of the magnetic steel and the size of the code wheel; therefore, the design idea of changing the magnetic field in the prior art is replaced by the light and shade signal of the light, the size of the code wheel code channel in the scheme is far smaller than the size required by the magnetic steel in the prior art, and more code channels can be carved on the basis of the size of the existing reluctance type code wheel through the existing mature code wheel photoetching technology, so that the resolution of the transmitter is improved, and meanwhile, the production cost is reduced.

3. In the scheme, the magnetic force transmission torque technology is realized through the magnetic force between the second magnetic steel and the first magnetic steel; in addition, the message sender is modularly designed and integrated, each component can be independently installed and detached, the operation is convenient and easy, and when only one component goes wrong, the component only needs to be replaced without replacing the whole message sender.

Further, the shell top is equipped with the connection platform, and top cap threaded connection is in the outside of connecting the platform. The top cover is convenient to disassemble and assemble, and the airtightness of the inner cavity is improved.

Further, be equipped with first sealed pad between top cap and the joint table, be equipped with the sealed pad of second between base and the brace table, the bottom of base is equipped with the sealed pad of third. The inner cavity meets the requirements of explosion-proof and explosion-proof grades, and the coded disc assembly, the light source plate and the signaling plate are positioned in the closed inner cavity.

Furthermore, the side wall of the shell is provided with an external thread connector, and the external thread connector is provided with a cable leading-out port assembly. On one hand, the cable connected with the signaling board can be discharged through the external thread connector; on the other hand, the cable leading-out port assembly and the external thread connector are in threaded connection, and the sealing performance of the inner cavity can be improved.

Furthermore, the upper end face and the lower end face of the supporting platform are coaxially provided with mounting holes, the mounting holes in the upper end face and the lower end face are not communicated, a shaft sleeve is arranged in the mounting holes in a pressing mode, and a bearing is arranged in the shaft sleeve in a pressing mode. Therefore, the inner rotating shaft and the outer rotating shaft are coaxially arranged, and the torque transmitted by the magnetic force is more accurate.

Furthermore, the code wheel assembly further comprises a code wheel seat, a code wheel pressing sheet and a nut, the code wheel seat is fixed on the inner rotating shaft, and the code wheel pressing sheet and the nut tightly press the code wheel on the code wheel seat. Thus, the coded disc is convenient to disassemble and assemble.

Furthermore, code wheel subassembly still includes interior axle sleeve, and the adversion axle passes through slide bearing and interior axle sleeve rotation to be connected, and interior axle sleeve can dismantle the connection on a supporting bench. This improves the rotational stability of the inner rotating shaft.

Furthermore, the coupling assembly further comprises an outer shaft sleeve, the outer shaft sleeve is rotatably connected with the outer shaft sleeve through a sliding bearing, and the outer shaft sleeve is detachably connected to the supporting table. This improves the rotational stability of the outer rotor shaft.

Furthermore, the first magnetic steel and the second magnetic steel are respectively provided with a plurality of magnetic steel, and the first magnetic steel or the second magnetic steel is uniformly distributed around the inner rotating shaft or the outer rotating shaft in the circumferential direction. Therefore, the magnetic force between the first magnetic steel and the second magnetic steel is increased, and the stability of the magnetic force transmission torque is improved.

Further, the shaft coupling is a flat-square shaft coupling or a shifting fork type shaft coupling. Thus adapting to flow meters of different interfaces.

Drawings

Fig. 1 is a cross-sectional view of an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a code wheel assembly according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a coupling assembly according to an embodiment of the present invention.

Reference numerals in the drawings of the specification include: the device comprises a shell 10, a base 11, a top cover 12, a support table 13, a connecting table 14, a first sealing gasket 15, a second sealing gasket 16, a third sealing gasket 17, an external thread connector 18, a cable outlet port assembly 19, a shaft sleeve 20, a code wheel assembly 21, an internal rotating shaft 211, a code wheel 212, a code wheel pressing sheet 213, a nut 214, a code wheel seat 215, an internal shaft sleeve 216, a first magnetic steel seat 217, first magnetic steel 218, a light source plate 22, a signaling plate 23, a coupling assembly 24, a coupling 241, an external rotating shaft 242, an external shaft sleeve 243, a second magnetic steel seat 244 and second magnetic steel 245.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, and specific embodiments will be given.

The embodiment is basically as shown in fig. 1, an optoelectronic signaling device, which comprises a housing 10, a base 11 and a top cover 12, wherein a supporting platform 13 is integrally formed in the housing 10, the supporting platform 13 divides the housing 10 into an upper inner cavity and a lower outer cavity, the base 11 and the supporting platform 13 are detachably connected through bolts, a connecting platform 14 is integrally formed at the top of the housing 10, the top cover 12 is in threaded connection with the outside of the connecting platform 14, a first sealing gasket 15 is arranged between the top cover 12 and the connecting platform 14, a second sealing gasket 16 is arranged between the base 11 and the supporting platform 13, and a third sealing gasket 17 is arranged at the bottom of the base 11.

The side wall of the shell 10 is provided with an external thread connector 18, the external thread connector 18 is provided with a cable leading-out port assembly 19, the shell 10 is internally provided with a code wheel assembly 21 positioned at the upper part of the support platform 13, the upper end surface and the lower end surface of the support platform 13 are coaxially provided with mounting holes, the mounting holes on the upper end surface and the lower end surface are not communicated, a shaft sleeve 20 is pressed in the mounting holes, and a bearing is pressed in the shaft sleeve 20.

Referring to fig. 2, the encoder assembly 21 includes an inner rotating shaft 211, an encoder 212, an encoder pressing plate 213, a nut 214, an encoder seat 215, an inner sleeve 216, a first magnetic steel 218 and a first magnetic steel seat 217, a certain number of light-transmitting and light-tight code tracks are etched on the encoder 212, the number of the light-transmitting and light-tight code tracks is uniformly distributed, the inner rotating shaft 211 is rotatably connected to the inner sleeve 216 through a sliding bearing, the inner sleeve 216 is fixed on the support base 13 through a screw, the encoder seat 215 is fixed on the inner rotating shaft 211, the encoder 212 is fixed on the encoder seat 215 through the encoder pressing plate 213 and is located above the inner sleeve 216, the encoder pressing plate 213 is tightly pressed by the nut 214, the first magnetic steel seat 217 is fixed on the inner rotating shaft 211 and is located below the inner sleeve 216, the first magnetic steel 218 is provided with a plurality of the first magnetic steel 218, and the first magnetic steel 218 is fixed at the bottom of the first magnetic steel seat 217 and uniformly distributed along the circumferential direction of the inner rotating shaft 211; when installed, the bottom end of the inner rotating shaft 211 fits into a bearing in the sleeve 20.

The top of the inner shaft sleeve 216 is provided with an installation groove, a light source plate 22 positioned below the code wheel 212 is fixed in the installation groove through a screw, a signaling plate 23 is fixed in the shell 10 through a screw, the signaling plate 23 is positioned above the code wheel assembly 21, and a round hole is formed in the middle of the signaling plate 23 and used for allowing the inner rotating shaft 211 and the nut 214 in the code wheel assembly 21 to pass through; the light source board 22 is electrically connected to the signal transmitting board 23, and the signal transmitting board 23 is connected to a signal processing circuit.

A coupling assembly 24 located at the bottom of the supporting platform 13 is further provided, as shown in fig. 3, wherein the coupling assembly 24 includes a coupling 241, an outer rotating shaft 242, an outer shaft sleeve 243, a second magnetic steel 245 and a second magnetic steel seat 244, the top end of the outer rotating shaft 242 is installed in a bearing in the shaft sleeve 20, the outer rotating shaft 242 is rotatably connected in the outer shaft sleeve 243 through a sliding bearing, the outer shaft sleeve 243 is fixed on the supporting platform 13 through a screw, the coupling 241 is fixed at the bottom of the outer rotating shaft 242, the second magnetic steel seat 244 is fixed on the outer rotating shaft 242, the number of the second magnetic steel 245 is the same as that of the first magnetic steel 218, and a plurality of the second magnetic steel 245 are circumferentially and uniformly distributed on the second magnetic steel seat 244; the second magnetic steel 245 attracts the first magnetic steel 218, and the coupling 241 is a flat-type coupling or a shift fork type coupling.

After the coded disc assembly 21 and the coupling assembly 24 are installed, the red, blue, yellow and green cables penetrate into the external thread connector 18 through the cable leading-out port assembly 19 and enter the shell 10, the cables are sequentially connected to the terminal of the signaling board 23, and then the end cover is installed on the connecting table 14.

When the coded disc 212 rotates, the light source plate 22 receives light and dark optical signals and transmits the light and dark optical signals to the communication plate 23, and the light and dark optical signals are transmitted to the communication plate 23 by the processing circuit.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. An optoelectronic transmitter, comprising: the device comprises a top cover, a shell and a base which are detachably connected in sequence, wherein a supporting table is arranged in the shell, the supporting table divides the shell into an inner cavity positioned above and an outer cavity positioned below, and a coded disc assembly positioned in the inner cavity and a coupler assembly positioned in the outer cavity are arranged on the supporting table;

the coded disc assembly comprises an inner rotating shaft, a coded disc, a first magnetic steel base and first magnetic steel, the coded disc and the first magnetic steel base are both fixed on the inner rotating shaft, the inner rotating shaft is rotatably connected to the supporting table, and the first magnetic steel is fixed at the bottom of the first magnetic steel base; a light source board positioned below the code disc is arranged on the support table, a signaling board positioned above the code disc is fixed in the shell, and the light source board is in electrical signal connection with the signaling board; the coupling assembly comprises a coupling, an outer rotating shaft, a second magnetic steel seat and second magnetic steel, the outer rotating shaft is rotatably connected with the supporting table, the coupling is fixed at the bottom of the outer rotating shaft, the second magnetic steel seat is fixed on the outer rotating shaft, the second magnetic steel is fixed at the top of the second magnetic steel seat, and the first magnetic steel and the second magnetic steel are attracted.

2. The optoelectronic transmitter of claim 1, wherein: the top of the shell is provided with a connecting table, and the top cover is connected to the outside of the connecting table in a threaded mode.

3. The optoelectronic transmitter of claim 2, wherein: a first sealing gasket is arranged between the top cover and the connecting table, a second sealing gasket is arranged between the base and the supporting table, and a third sealing gasket is arranged at the bottom of the base.

4. The optoelectronic transmitter of claim 1, wherein: and the side wall of the shell is provided with an external thread connector, and the external thread connector is provided with a cable leading-out port assembly.

5. The optoelectronic transmitter of claim 1, wherein: the upper end face and the lower end face of the supporting table are coaxially provided with mounting holes, the mounting holes in the upper end face and the lower end face are not communicated, a shaft sleeve is arranged in the mounting holes in a pressing mode, and a bearing is arranged in the shaft sleeve in a pressing mode.

6. The optoelectronic transmitter of claim 1, wherein: the code wheel assembly further comprises a code wheel seat, a code wheel pressing sheet and a nut, the code wheel seat is fixed on the inner rotating shaft, and the code wheel pressing sheet and the nut press the code wheel on the code wheel seat.

7. The optoelectronic transmitter of claim 1, wherein: the coded disc subassembly still includes interior axle sleeve, and the adversion axle passes through slide bearing and interior axle sleeve rotation to be connected, and interior axle sleeve can be dismantled and connect on a supporting bench.

8. The optoelectronic transmitter of claim 1, wherein: the coupling assembly further comprises an outer shaft sleeve, the outer shaft sleeve is rotatably connected with the outer shaft sleeve through a sliding bearing, and the outer shaft sleeve is detachably connected to the supporting table.

9. The optoelectronic transmitter of claim 1, wherein: the first magnetic steel and the second magnetic steel are respectively provided with a plurality of first magnetic steels or second magnetic steels, and the first magnetic steels or the second magnetic steels are uniformly distributed around the inner rotating shaft or the outer rotating shaft in the circumferential direction.

10. The optoelectronic transmitter of claim 1, wherein: the shaft coupling is a flat type shaft coupling or a shifting fork type shaft coupling.