CN216668750U - Dial type photoelectric sensor - Google Patents
Dial type photoelectric sensor Download PDFInfo
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- CN216668750U CN216668750U CN202122594392.7U CN202122594392U CN216668750U CN 216668750 U CN216668750 U CN 216668750U CN 202122594392 U CN202122594392 U CN 202122594392U CN 216668750 U CN216668750 U CN 216668750U
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Abstract
The utility model provides a dial type photoelectric sensor, comprising: a housing and a shafting member; the shafting component comprises a main shaft, a first embedded block, a second embedded block, a first bearing, a second bearing and a bearing gland; the first embedded block is fixed on the main shaft, and the second embedded block is fixed on the shell; the first transmission shaft insert is meshed with the second transmission shaft insert; the main shaft sequentially penetrates through the first transmission shaft embedded block, the second transmission shaft embedded block, the first bearing, the second bearing and the bearing gland for limiting the second bearing along the direction close to the shell; and an adaptive disc used for being connected with a shaft end cover of a vehicle bogie wheel pair is fixed at one end part of the main shaft, which is positioned outside the shell. The dial type photoelectric sensor is convenient to assemble, stable in performance, good in vibration resistance and impact strength, good in overall sealing performance and capable of meeting the precision requirement of a user on the sensor.
Description
Technical Field
The utility model relates to the technical field of photoelectric sensors, in particular to a dial type photoelectric sensor.
Background
The photoelectric rotation speed sensor is arranged at the shaft end of various locomotives, provides the running speed and the moving direction for the locomotive and is an important component for the safe running of the locomotive. The sensor input shaft is connected with the measured wheel shaft, the measured wheel shaft drives the sensor input shaft to rotate, the rotating speed of the measured wheel shaft is equal to that of the input shaft, and an electric pulse signal proportional to the rotating speed of the wheel is generated by utilizing the photoelectric effect of the photoelectric module, so that speed measurement is realized.
The existing photoelectric revolution speed sensor for track traffic adopts a photosensitive element to transmit and receive signals and generate electric pulse signals, and the sensor has the advantages of simple and reliable structure, high measurement precision and the like, so the sensor is widely used.
The shafting structure of the existing photoelectric rotating speed sensor adopts a single-fulcrum shaft fixing structure, the shaft is easy to incline when running at high speed, abnormal sound phenomenon exists when running, and the sealing structure can not effectively prevent the entry of dirt. And adopt universal joint, all shafting parts are assembled in the seat after constituteing integratively, in case the shaft coupling damages, must change whole root axle, and with high costs, and seriously influenced sensor's work efficiency.
In view of the above, the present invention is particularly proposed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a dial type photoelectric sensor which is supported by two bearings, so that the sensor is effectively prevented from inclining in the operation process; by arranging the first transmission shaft embedded block and the second transmission shaft embedded block in a meshed connection mode, the protection to the internal environment can be improved, the sensing element in the shell is prevented from being polluted, and therefore the precision of the sensor is guaranteed; the adapter disc is connected with the axle end cover of the vehicle bogie wheel pair, so that the anti-vibration capacity and the impact strength can be improved, the speed measurement requirement of special conditions can be met by adopting the connection mode of the adapter disc, and when a locomotive axle does not have a bearing cover, the locomotive axle can be directly connected with the locomotive axle, so that the application range of the locomotive axle is expanded.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the utility model provides a dial type photoelectric sensor, comprising: a housing and a shafting member;
the shafting component comprises a main shaft, a first transmission shaft embedded block, a second transmission shaft embedded block, a first bearing, a second bearing and a bearing gland; the first transmission shaft insert block is fixed on the main shaft, and the second transmission shaft insert block is fixed on the shell; the first transmission shaft insert is meshed with the second transmission shaft insert; the outer ring of the first bearing and the outer ring of the second bearing are both fixed in the shell;
the main shaft sequentially penetrates through the first transmission shaft embedded block, the second transmission shaft embedded block, the first bearing, the second bearing and the bearing gland for limiting the second bearing along the direction close to the shell; a shaft end nut is arranged at one end part of the main shaft, which is positioned in the shell, and the bearing gland and the second bearing are arranged on the main shaft through the fastening force of the shaft end nut; and an adaptive disc used for being connected with a shaft end cover of a vehicle bogie wheel pair is fixed at one end part of the main shaft, which is positioned outside the shell.
In the prior art, the photoelectric rotating speed sensor for rail transit has the following problems:
1. the photoelectric rotating speed sensor adopts the photosensitive element to transmit and receive signals and generate electric pulse signals, and because the photosensitive element is a point light source, frequent impact, vibration, overload, dirt entering and the like frequently occur in the running process of a vehicle, the receiving of the sensor signals is easily affected seriously, and under the condition that the internal environment of a product is polluted, the phenomena of no signal in a channel, out-of-phase difference, pulse loss at low speed and the like exist, so the reliability of the photoelectric rotating speed sensor is greatly reduced.
2. The shafting structure of the existing photoelectric rotating speed sensor adopts a single-fulcrum shaft fixing structure, the shaft is easy to incline when running at high speed, abnormal sound phenomenon exists when running, and the sealing structure can not effectively prevent the entry of dirt.
3. The conventional installation driving mode of the existing sensor is directly fixed by a shell, and driven by a tongue shaft, a square shaft and a shifting fork on the sensor, so that the conventional installation driving mode of the existing sensor has poor vibration and impact resistance and low precision.
In order to solve the problems, the utility model provides a dial type photoelectric sensor, wherein a main shaft of the sensor is supported by two bearings, so that the inclination of the main shaft in the operation process is effectively prevented; by arranging the first transmission shaft embedded block and the second transmission shaft embedded block in a meshed connection mode, the protection to the internal environment can be improved, the sensing element in the shell is prevented from being polluted, and therefore the precision of the sensor is guaranteed; the adapter disc is connected with the axle end cover of the vehicle bogie wheel pair, so that the anti-vibration capacity and the impact strength can be improved, the speed measurement requirement of special conditions can be met by adopting the connection mode of the adapter disc, and when a locomotive axle does not have a bearing cover, the locomotive axle can be directly connected with the locomotive axle, so that the application range of the locomotive axle is expanded.
Preferably, a sensing component is arranged in the shell; the sensing component comprises a grating sheet and a photoelectric module; an annular recess is formed at one end of the bearing gland close to the shaft end nut; a snap ring is arranged on the annular recess, and the grating sheet is fixed between the snap ring and the annular recess; the photoelectric module is fixed in the sensor shell, and the grating sheet passes through a sensing element in the photoelectric module to transmit signals. When the photoelectric module works, the grating sheet is driven by the main shaft to rotate, so that signals are transmitted to the photoelectric module.
Preferably, one end of the shell, which is close to the adapting disc, is provided with a mounting frame, the bottom of the mounting frame is provided with a torsion balance rod, and a damping sleeve is arranged between the torsion balance rod and the mounting frame. By arranging the torsion balance rod, the assembly stability of the sensor can be improved, and static false pulse output is avoided; through setting up the shock attenuation cover, can reduce the impact of wheel pair to the sensor to reduce the fault rate of sensor.
Preferably, a framework oil seal is arranged between the first bearing and the second transmission shaft insert block. Set up the skeleton oil blanket and can make holistic protection level improve to IP68 with first transmission shaft inserted block and the cooperation of second transmission shaft inserted block to prevent that casing internals from receiving the pollution.
Preferably, the first bearing and the second bearing are both double-row angular contact ball bearings. The double row angular contact ball bearing can provide a bearing arrangement with high rigidity and can bear overturning moment, thereby improving the overall stability.
Preferably, a cable joint is obliquely arranged on the shell; and a cable is arranged in the cable joint, one end of the cable is connected with the photoelectric module, and the other end of the cable is arranged at the wire outlet of the cable joint. Furthermore, the included angle between the cable joint and the torsion balance bar is 15 degrees. By adopting the assembling mode with the included angle, the friction and the impact between the cable in the sensor and the wheel set when a vehicle runs can be avoided, and the use safety, the stability and the reliability of the cable can be improved.
Preferably, a pressing plate is arranged between the clamping ring and the shaft end nut, and a positioning sleeve is arranged between the pressing plate and the shaft end nut.
Preferably, one end of the shell, which is far away from the adapter plate, is provided with a rear cover, and the rear cover is buckled on the shell.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the sensor main shaft is supported by the two bearings, so that the inclination of the sensor main shaft in the operation process is effectively prevented;
(2) by arranging the first transmission shaft embedded block and the second transmission shaft embedded block in a meshed connection mode, the protection to the internal environment can be improved, the sensing element in the shell is prevented from being polluted, and therefore the precision of the sensor is guaranteed;
(3) the adapter disc is connected with the axle end cover of the vehicle bogie wheel pair, so that the anti-vibration capacity and the impact strength can be improved, the speed measurement requirement of special conditions can be met by adopting the connection mode of the adapter disc, and when a locomotive axle does not have a bearing cover, the locomotive axle can be directly connected with the locomotive axle, so that the application range of the locomotive axle is expanded.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 to 3 are schematic structural diagrams of a dial type photoelectric sensor according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion A of FIG. 1;
FIG. 5 is a partial enlarged view of portion B of FIG. 1;
fig. 6 is a schematic structural diagram of a damping sleeve according to an embodiment of the present invention.
Wherein:
1-rear cover; 2-a photovoltaic module;
3-a shell; 4-a cable line;
5-cable joint; 6-mounting a frame;
7-shaft end nut; 8-positioning the sleeve;
9-bearing gland; 10-a second bearing;
11-a first bearing; 12-torsion balance bar;
13-a damping sleeve; 1301-fixing the sleeve;
1302-buffer ring; 14-a second drive shaft insert;
15-a first drive shaft insert; 16-a main shaft;
17-an adaptive disc; 18-a platen;
19-a snap ring; 20-a grating sheet;
21-a gasket; 22-framework oil seal.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to more clearly illustrate the technical solution of the present invention, the following description is made in the form of specific embodiments.
Examples
Referring to fig. 1 to 6, the present embodiment provides a dial type photoelectric sensor, including: a housing 3 and a shafting member;
the shafting component comprises a main shaft 16, a first transmission shaft insert 15, a second transmission shaft insert 14, a first bearing 11, a second bearing 10 and a bearing gland 9; the first transmission shaft insert 15 is fixed on the main shaft 16, and the second transmission shaft insert 14 is fixed on the shell 3; the first transmission shaft embedded block is meshed with the second transmission shaft embedded block; the outer ring of the first bearing 11 and the outer ring of the second bearing 10 are both fixed in the shell 3; a framework oil seal 22 is arranged between the first bearing 11 and the second transmission shaft insert.
The main shaft 16 sequentially penetrates through the first transmission shaft insert, the second transmission shaft insert, the first bearing 11, the second bearing 10 and the bearing gland 9 for limiting the second bearing 10 along the direction close to the shell 3; a shaft end nut 7 is arranged at one end part of the main shaft 16 positioned in the shell 3, and the bearing gland 9 and the second bearing 10 are arranged on the main shaft 16 through the fastening force of the shaft end nut 7; an adapter disc 17 for connecting with an axle end cover of a vehicle bogie wheel pair is fixed at one end of the main axle 16 outside the shell 3. One end of the shell 3, which is far away from the adapting disc 17, is provided with a rear cover 1, and the rear cover 1 is buckled on the shell 3. In this embodiment, the first bearing 11 and the second bearing 10 are both double-row angular contact ball bearings. A gasket 21 for improving the positioning effect is further provided between the bearing cover 9 and the second bearing 10.
With continued reference to fig. 1, a sensing component is disposed within housing 3; the sensing part comprises a grating sheet 20 and an optoelectronic module 2; an annular recess is formed at one end of the bearing gland 9 close to the shaft end nut 7; the annular recess is provided with a clamping ring 19, a pressing plate 18 is arranged between the clamping ring 19 and the shaft end nut 7, and a positioning sleeve 8 is arranged between the pressing plate 18 and the shaft end nut 7. The grating sheet 20 is fixed between the clamping ring 19 and the annular recess; the optoelectronic module 2 is fixed in a sensor housing and the grating plate 20 passes over the sensor elements in the optoelectronic module 2 to transmit signals. In operation, the grating plate 20 is driven by the spindle 16 to rotate, thereby transmitting signals to the optoelectronic module 2.
As shown in fig. 2, a mounting bracket 6 is disposed at one end of the housing 3 close to the adapter plate 17, a torsion balance bar 12 is mounted at the bottom of the mounting bracket 6, and a damping sleeve 13 is disposed between the torsion balance bar 12 and the mounting bracket 6.
Specifically, as shown in fig. 6, the damping sleeve 13 includes a sleeve and a cushion ring 1302 wrapped around the fixed sleeve 1301, and the cushion ring 1302 is made of high-performance rubber.
As shown in fig. 3, the housing 3 is provided with a cable connector 5 at an incline; a cable 4 is arranged in the cable joint 5, one end of the cable 4 is connected with the photoelectric module 2, and the other end of the cable is arranged at the wire outlet of the cable joint 5. In this embodiment, the angle between the cable connector 5 and the torsion balance bar 12 is 15 °.
In a word, the dial type photoelectric sensor is convenient to assemble, stable in performance, good in vibration resistance and impact strength, good in overall sealing performance and capable of meeting the precision requirement of a user on the sensor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A dial type photoelectric sensor, comprising: a housing and a shafting member;
the shafting component comprises a main shaft, a first transmission shaft embedded block, a second transmission shaft embedded block, a first bearing, a second bearing and a bearing gland; the first transmission shaft insert is fixed on the main shaft, and the second transmission shaft insert is fixed on the shell; the first transmission shaft insert is meshed with the second transmission shaft insert; the outer ring of the first bearing and the outer ring of the second bearing are both fixed in the shell;
the main shaft sequentially penetrates through the first transmission shaft embedded block, the second transmission shaft embedded block, the first bearing, the second bearing and the bearing gland for limiting the second bearing along the direction close to the shell; a shaft end nut is arranged at one end part of the main shaft, which is positioned in the shell, and the bearing gland and the second bearing are arranged on the main shaft through the fastening force of the shaft end nut; and an adaptive disc used for being connected with a shaft end cover of a vehicle bogie wheel pair is fixed at one end part of the main shaft, which is positioned outside the shell.
2. The dial type photoelectric sensor according to claim 1, wherein a sensing member is provided in the housing; the sensing component comprises a grating sheet and a photoelectric module; an annular recess is formed at one end of the bearing gland close to the shaft end nut; a clamping ring is arranged on the annular recess, and the grating sheet is fixed between the clamping ring and the annular recess; the photoelectric module is fixed in the sensor shell, and the grating sheet passes through a sensing element in the photoelectric module to transmit signals.
3. The dial plate type photoelectric sensor according to claim 2, wherein a mounting frame is arranged at one end of the housing close to the adapter plate, a torsion balance bar is mounted at the bottom of the mounting frame, and a damping sleeve is arranged between the torsion balance bar and the mounting frame.
4. The dial type photoelectric sensor according to claim 1, wherein a skeleton oil seal is provided between the first bearing and the second transmission shaft insert.
5. The dial type photoelectric sensor according to claim 3, wherein a cable connector is obliquely arranged on the housing; and a cable is arranged in the cable joint, one end of the cable is connected with the photoelectric module, and the other end of the cable is arranged at the wire outlet of the cable joint.
6. The dial-type photoelectric sensor according to claim 5, wherein an angle between the cable connector and the torsion balance bar is 15 °.
7. The dial type photoelectric sensor according to claim 2, wherein a pressure plate is disposed between the snap ring and the shaft end nut, and a positioning sleeve is disposed between the pressure plate and the shaft end nut.
8. The dial type photoelectric sensor according to claim 1, wherein a rear cover is provided at an end of the housing away from the adapter plate, and the rear cover is fastened to the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122594392.7U CN216668750U (en) | 2021-10-27 | 2021-10-27 | Dial type photoelectric sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122594392.7U CN216668750U (en) | 2021-10-27 | 2021-10-27 | Dial type photoelectric sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216668750U true CN216668750U (en) | 2022-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122594392.7U Active CN216668750U (en) | 2021-10-27 | 2021-10-27 | Dial type photoelectric sensor |
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|---|---|
| CN (1) | CN216668750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114778881A (en) * | 2022-06-21 | 2022-07-22 | 宁波中车时代传感技术有限公司 | Photoelectric rotation speed sensor |
-
2021
- 2021-10-27 CN CN202122594392.7U patent/CN216668750U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114778881A (en) * | 2022-06-21 | 2022-07-22 | 宁波中车时代传感技术有限公司 | Photoelectric rotation speed sensor |
| CN114778881B (en) * | 2022-06-21 | 2022-09-27 | 宁波中车时代传感技术有限公司 | Photoelectric rotation speed sensor |
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