Photoelectric sensor with sulfur-free rubber pad structure

Abstract

The utility model provides a photoelectric sensor with a sulfur-free rubber pad structure. The photoelectric sensor comprises a shell, a sulfur-free rubber pad, a photoelectric module and a wire cable, the photoelectric module and the sulfur-free rubber pad are arranged in the shell; the cable is arranged at the side part of the shell in a penetrating manner; the photoelectric module is arranged at one end, far away from the outgoing cable, in the shell; the sulfur-free rubber pad is arranged between the photoelectric module and the inner wall of the shell and located on the normal plane of the rotation axis of the photoelectric sensor. The photoelectric sensor with the sulfur-free rubber pad structure provided by the utility model is applied to a locomotive rotating speed monitoring system, erosion of sulfide volatilization to internal components of a photoelectric module circuit board is avoided, the problems of internal corrosion of the components and circuit faults are effectively solved, the requirements of an axle detection system are met, and the service life of the axle detection system is prolonged. And the measurement efficiency of the wheel rotation motion parameters is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of axle type photoelectric sensor design, in particular to a photoelectric sensor with a sulfur-free rubber pad structure. Background Art

[0002] Axle-type photoelectric sensors are installed on the wheels of rail transit trains to measure motion parameters such as the speed, direction, and distance of wheel rotation.

[0003] The photoelectric speed sensor is a high-precision speed and distance measuring device based on the photoelectric effect. It scans the inner and outer tracks of the grating through the photoelectric module and outputs a square wave signal consistent with the grating grid. It can output up to 6 sets of square wave signals with different phases, which can be used for the system to detect the running direction, speed, acceleration, idling and slipping of the locomotive.

[0004] A sealing gasket is installed inside the housing of the photoelectric sensor to fix the photoelectric module and prevent the photoelectric module from moving. However, the rubber gasket currently used is a vulcanized rubber gasket, which will volatilize sulfide and corrode the components inside the photoelectric module circuit board, reducing the working life of the components, causing circuit failures, and significantly reducing the stability of the photoelectric sensor. Utility Model Content

[0005] In view of this, the purpose of the utility model is to design a photoelectric sensor with a sulfur-free rubber pad structure for use in a locomotive speed monitoring system, to avoid the volatilization of sulfides from corroding components inside the photoelectric module circuit board, to effectively solve internal corrosion of components and circuit failures, to meet the needs of the axle detection system, and to improve the measurement efficiency of wheel rotation motion parameters.

[0006] The utility model provides a photoelectric sensor with a sulfur-free rubber pad structure, comprising: a shell, a sulfur-free rubber pad, a photoelectric module, and an output cable; the photoelectric module and the sulfur-free rubber pad are both arranged inside the shell; the output cable is passed through the side of the shell; the output cable is led out from the inside of the shell to the outside of the shell and connected to the on-board cable;

[0007] The photoelectric module is arranged inside the shell at one end away from the outgoing cable; the sulfur-free rubber pad is arranged between the photoelectric module and the inner wall of the shell, and is located on the normal plane of the rotation axis of the photoelectric sensor.

[0008] The photoelectric sensor of the sulfur-free rubber pad structure is installed on the end surface of the fixing part of the wheel axle.

[0009] Furthermore, the sulfur-free rubber pad is made of any one of natural rubber, synthetic rubber and latex rubber.

[0010] Raw rubber refers to natural or synthetic rubber without the addition of vulcanizers. The physical and chemical properties of raw rubber are very different from those of vulcanized rubber, mainly in the following aspects:

[0011] 1. The molecular chain structure of unvulcanized rubber is relatively scattered, and its thermal stability and mechanical strength are low.

[0012] 2. The elastic modulus of unvulcanized rubber is high and the wear resistance is poor.

[0013] 3. Unvulcanized rubber has good plasticity and is easy to process.

[0014] Unvulcanized rubber mainly includes the following types:

[0015] 1. Natural rubber:

[0016] Natural rubber is a natural high molecular polymer extracted from the bark of rubber trees, and its main component is isoprene monomer. Natural rubber has excellent physical and chemical properties and is widely used in tires, soles, pipes and other fields.

[0017] 2. Synthetic rubber:

[0018] Synthetic rubber refers to a polymer material synthesized by polymerization or copolymerization. There are many types of synthetic rubber with different properties and uses. At present, synthetic rubber has gradually replaced natural rubber as one of the main materials in industrial production.

[0019] 3. Latex rubber:

[0020] Emulsion rubber is a type of rubber obtained by solidifying rubber latex. It has the characteristics of stable shape and easy processing, and is widely used in coatings, glues, printing inks and other fields.

[0021] Unvulcanized rubber has the characteristics of good processing performance and strong plasticity.

[0022] Furthermore, a rotating shaft is arranged at the central axis of the shell, and the rotating shaft can rotate continuously or reciprocatingly within a range of 0°-360° with the central axis of the shell as the rotation axis.

[0023] Furthermore, the rotating shaft of the photoelectric sensor is installed coaxially with the rotating part of the wheel axle.

[0024] Furthermore, the shell is provided with a plurality of symmetrically arranged connection holes, and the shell is fixedly connected to the fixing portion of the wheel axle through the connection holes.

[0025] Furthermore, the connection type between the outlet cable and the lead-out portion of the housing is a flexible connection, and the outlet cable can be bent at the lead-out portion.

[0026] Furthermore, the angle between the lead-out direction of the outgoing cable from the housing and the axle is 90 degrees.

[0027] Furthermore, the outlet cable adopts wear-resistant stranded wire, which is strong and durable and can maintain the electrical performance of the cable for a long time.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] The photoelectric sensor with a sulfur-free rubber pad structure provided by the utility model is used in a locomotive speed monitoring system, which avoids the corrosion of internal components of the photoelectric module circuit board by volatilization of sulfides, effectively solves the problems of internal corrosion of components and circuit failure, meets the requirements of the axle detection system, and effectively improves the measurement efficiency of wheel rotation motion parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those skilled in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0031] In the attached picture:

[0032] Figure 1 The utility model is a schematic structural diagram of a photoelectric sensor with a sulfur-free rubber pad structure.

[0033] The symbols in the accompanying drawings are:

[0034] 1. Shell, 2. Photoelectric sensor with sulfur-free rubber pad, 3. Photoelectric module, 4. Outgoing cable. DETAILED DESCRIPTION

[0035] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0036] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0037] It should be understood that although the terms first, second, and third may be used in the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0038] The utility model embodiment provides a photoelectric sensor with a sulfur-free rubber pad structure, see Figure 1 As shown, including:

[0039] Shell 1, sulfur-free rubber pad 2, photoelectric module 3, and output cable 4; the photoelectric module 3 and sulfur-free rubber pad 2 are both arranged inside the shell 1; the output cable 4 is passed through the side of the shell 1; the output cable 4 is led out from the inside of the shell 1 to the outside of the shell 1 and connected to the on-board cable;

[0040] The photoelectric module 3 is arranged inside the housing 1 at one end away from the outgoing cable 4; the sulfur-free rubber pad 2 is arranged between the photoelectric module 3 and the inner wall of the housing 1 and is located on the normal plane of the rotation axis of the photoelectric sensor.

[0041] The photoelectric sensor of the sulfur-free rubber pad structure is installed on the end surface of the fixing part of the wheel axle.

[0042] The sulfur-free rubber pad 2 is made of any one of natural rubber, synthetic rubber and latex rubber.

[0043] Raw rubber refers to natural or synthetic rubber without the addition of vulcanizers. The physical and chemical properties of raw rubber are very different from those of vulcanized rubber, mainly in the following aspects:

[0044] 1. The molecular chain structure of unvulcanized rubber is relatively scattered, and its thermal stability and mechanical strength are low.

[0045] 2. The elastic modulus of unvulcanized rubber is high and the wear resistance is poor.

[0046] 3. Unvulcanized rubber has good plasticity and is easy to process.

[0047] Unvulcanized rubber mainly includes the following types:

[0048] 1. Natural rubber:

[0049] Natural rubber is a natural high molecular polymer extracted from the bark of rubber trees, and its main component is isoprene monomer. Natural rubber has excellent physical and chemical properties and is widely used in tires, soles, pipes and other fields.

[0050] 2. Synthetic rubber:

[0051] Synthetic rubber refers to a polymer material synthesized by polymerization or copolymerization. There are many types of synthetic rubber with different properties and uses. At present, synthetic rubber has gradually replaced natural rubber as one of the main materials in industrial production.

[0052] 3. Latex rubber:

[0053] Emulsion rubber is a type of rubber obtained by solidifying rubber latex. It has the characteristics of stable shape and easy processing, and is widely used in coatings, glues, printing inks and other fields.

[0054] Unvulcanized rubber has the characteristics of good processing performance and strong plasticity.

[0055] A rotating shaft is arranged at the central axis of the housing 1 , and the rotating shaft can rotate continuously or reciprocatingly within a range of 0° to 360° with the central axis of the housing 1 as the rotating axis.

[0056] The rotating shaft of the photoelectric sensor is coaxially installed with the rotating part of the wheel axle.

[0057] The housing 1 is provided with a plurality of symmetrically arranged connection holes, and the housing 1 is fixedly connected to the fixing portion of the wheel axle through the connection holes.

[0058] The angle between the lead-out direction of the outgoing cable 4 from the housing 1 and the axle is 90 degrees.

[0059] The outgoing cable 4 is made of wear-resistant stranded wire, which is strong and durable and can maintain the electrical performance of the cable for a long time.

[0060] The connection type between the outgoing cable 4 and the lead-out portion of the housing 1 is a flexible connection, and the outgoing cable 4 can be bent at the lead-out portion.

[0061] The photoelectric sensor with a sulfur-free rubber pad structure provided by the embodiment of the utility model is used in a locomotive speed monitoring system, which avoids the corrosion of internal components of the photoelectric module circuit board by sulfide volatilization, effectively solves the problems of internal corrosion of components and circuit failure, meets the requirements of the axle detection system, and effectively improves the measurement efficiency of wheel rotation motion parameters.

[0062] So far, the technical solution of the utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the utility model.

[0063] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, replacement, and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A photoelectric sensor with a sulfur-free rubber pad structure, characterized in that: include: Shell, sulfur-free rubber pad, optoelectronic module, outgoing cable; The photoelectric module and the sulfur-free rubber pad are both arranged inside the housing; the outgoing cables are passed through the side of the housing; The photoelectric module is arranged inside the shell at one end away from the outgoing cable; the sulfur-free rubber pad is arranged between the photoelectric module and the inner wall of the shell, and is located on the normal plane of the rotation axis of the photoelectric sensor.

2. The photoelectric sensor of the sulfur-free rubber pad structure according to claim 1 is characterized in that: The sulfur-free rubber pad is made of any one of natural rubber, synthetic rubber and latex rubber.

3. The photoelectric sensor of the sulfur-free rubber pad structure according to claim 1, characterized in that: A rotating shaft is arranged at the central axis of the shell, and the rotating shaft can rotate continuously or reciprocatingly by 0°--360° with the central axis of the shell as the rotating axis.

4. The photoelectric sensor of the sulfur-free rubber pad structure according to claim 3 is characterized in that: The rotating shaft of the photoelectric sensor is coaxially installed with the rotating part of the wheel axle.

5. The photoelectric sensor of the sulfur-free rubber pad structure according to claim 4 is characterized in that: The shell is provided with a plurality of symmetrically arranged connection holes, and the shell is fixedly connected to the fixing part of the wheel axle through the connection holes.

6. The photoelectric sensor of the sulfur-free rubber pad structure according to claim 1, characterized in that: The connection type between the outlet cable and the lead-out portion of the housing is a flexible connection, and the outlet cable can be bent at the lead-out portion.

7. The photoelectric sensor of the sulfur-free rubber pad structure according to claim 1, characterized in that: The angle between the lead-out direction of the outgoing cable from the housing and the axle is 90 degrees.

8. The photoelectric sensor with sulfur-free rubber pad structure according to claim 1, characterized in that: The outgoing cables are made of wear-resistant twisted wires.

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