CN111623889A

CN111623889A - Surface temperature sensor

Info

Publication number: CN111623889A
Application number: CN202010369466.4A
Authority: CN
Inventors: 张俊旗; 李海洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-09-04

Abstract

The invention belongs to the technical field of temperature sensors, and particularly relates to a surface temperature sensor which comprises a cylinder, wherein the top end of the cylinder is rotatably connected with a chassis, a through hole is formed in the chassis, a driving motor is fixed at the through hole, a first gear is fixed at the output shaft end of the driving motor, a circular ring is rotatably installed in the inner cavity of the cylinder, a gear ring is arranged on the inner side wall of the circular ring, the first gear is meshed with the gear ring, a push rod motor and a guide rail are fixed on the inner side wall of the circular ring, a sliding block is movably installed on the guide rail, the guide rail and the sliding block are both of circular arc structures, the guide rail and the sliding block are concentric, and the circle center of; according to the invention, the infrared temperature sensor is driven to rotate, and the angle of the infrared temperature sensor is adjusted at the same time, so that the measuring point of the infrared temperature sensor is positioned on the measuring point of the measuring piece, the tracking measurement of the rotating body is realized, and the application range of the invention is further widened.

Description

Surface temperature sensor

Technical Field

The invention belongs to the technical field of temperature sensors, and particularly relates to a surface temperature sensor.

Background

A temperature sensor is a sensor that senses temperature and converts it into a usable output signal. The temperature sensor is the core part of the temperature measuring instrument and has a plurality of varieties. The measurement method can be divided into a contact type and a non-contact type, and the measurement method can be divided into a thermal resistor and a thermocouple according to the characteristics of sensor materials and electronic elements.

An infrared temperature sensor is a sensor that measures physical properties of infrared rays. Infrared light is also called infrared light, and has properties of reflection, refraction, scattering, interference, absorption and the like. Any substance, as long as it has a certain temperature itself (above absolute zero), can radiate infrared rays. The infrared sensor does not directly contact with the measured object during measurement, so that friction does not exist, and the infrared sensor has the advantages of high sensitivity, quick response and the like.

Some temperature sensors have been proposed in the prior art, and for example, chinese patent No. 2010800570683 discloses a non-contact temperature sensor in which sensitivity can be easily corrected by adjusting a sensitivity adjustment member in an operation confirmation test after assembling each member in a production process, and temperature detection accuracy of each product can be suppressed within a certain range. When the opening region of the light guide section is at a fixed position, the outline shape and the opening area thereof are kept constant, and the detection view angle that can receive infrared rays is fixed, the sensitivity of temperature detection can be corrected, and therefore, variations in sensitivity can be corrected without changing the temperature detection target range. Therefore, even when the temperature sensor is mounted on the mounting object product, the detection object range of the temperature sensor can be kept constant, and more stable quality can be kept, but the temperature can be measured only for an object at a fixed position, and tracking measurement cannot be performed for a revolving body and a rotating machine or equipment, so that the limitation is large.

Disclosure of Invention

In order to make up for the defects of the prior art, the surface temperature sensor provided by the invention drives the infrared temperature sensor to rotate, and simultaneously adjusts the angle of the infrared temperature sensor, so that the measuring point of the infrared temperature sensor is positioned on the measuring point of the measuring piece, the tracking measurement of the rotating body is realized, and the application range of the surface temperature sensor is enlarged.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a surface temperature sensor, which comprises a cylinder, wherein the top end of the cylinder is rotatably connected with a chassis, a through hole is arranged in the chassis, a driving motor is fixed at the through hole, a first gear is fixed at the output shaft end of the driving motor, a circular ring is rotatably arranged in the inner cavity of the cylinder, a gear ring is arranged on the inner side wall of the circular ring, the first gear is meshed with the gear ring, a push rod motor and a guide rail are fixed on the inner side wall of the circular ring, a slide block is movably arranged on the guide rail, the guide rail and the slide block are both of circular arc structures, the guide rail and the slide block are concentric, the circle center of the moving track of the slide block is concentric with the circle center of the slide block, an infrared temperature sensor is fixed at one end of the slide block, which is far away from the guide rail, a, a controller is arranged in the cylinder and used for controlling the sensor to work; when the infrared temperature sensor works, the existing infrared temperature sensor only measures the temperature of an object at a fixed position generally, and cannot track and measure a revolving body and rotating machinery or equipment, so that the limitation is large, and the problem is improved; when the large-scale revolving body is measured, the distance between the large-scale revolving body and the revolving body is changed according to the actual situation; during measurement, the driving motor and the push rod motor are controlled to work according to the diameter value of the revolving body, the infrared temperature sensor is driven to move in the cylinder under the condition that the push rod motor is extended or shortened, and the sliding block connected with the infrared temperature sensor moves on the guide rail, so that the infrared temperature sensor rotates; the axis of the infrared temperature sensor deviates from the axis of the revolving body in the rotating process, so that the measuring point of the infrared temperature sensor deviates; when the infrared temperature sensor deflects for a certain angle and the measuring point thereof is contacted with the appointed part of the revolving body or the revolving machine, the work of the push rod motor is stopped, so that the infrared temperature sensor keeps the deflection angle; meanwhile, the driving motor drives the first gear to rotate when working, so that the circular ring rotates, and the infrared temperature sensor rotates along the axis of the cylinder; the measuring point of the infrared temperature sensor is always contacted with the measuring part of the revolving body or the rotating machinery in the rotating process, so that the tracking measurement is realized; the magnet on the push rod motor is always in contact with the magnet when moving, so that the stability of the infrared temperature sensor in the rotating process is limited, the infrared temperature sensor is prevented from shaking and rotating greatly, and the problem of measurement failure is avoided; when the infrared temperature sensor is adjusted, the magnet pulls the magnet to move, so that the infrared temperature sensor rotates along with the magnet, and the adjustment of the infrared temperature sensor is more convenient; according to the invention, the infrared temperature sensor is driven to rotate, and the angle of the infrared temperature sensor is adjusted at the same time, so that the measuring point of the infrared temperature sensor is positioned on the measuring point of the measuring piece, the tracking measurement of the rotating body is realized, and the application range of the invention is further widened.

Preferably, the through hole is not concentric with the chassis, the driving motor is eccentrically installed in the chassis, a first rotating shaft is rotatably installed at the top end of the chassis, the first rotating shaft is located on the axis of the chassis, an installation disc is rotatably installed at one end, away from the chassis, of the first rotating shaft, the driving motor is a double-shaft motor, an output shaft at the top end of the driving motor is a second output shaft, a second rotating shaft is fixedly installed at the second output shaft end of the driving motor, a second gear is fixedly arranged at one end, away from the driving motor, of the second rotating shaft, a third gear is fixedly arranged on the surface of one end, away from the chassis, of the first rotating shaft, the second gear is mutually meshed with the third gear, a rotating ring is rotatably installed on the side wall of the chassis, and the top end of the; when the electric vehicle works, the revolving body is difficult to keep up with the revolving speed because of the high revolving speed of the revolving body; fixing the mounting plate on a wall or a fixing plate to fix the invention; the second rotating shaft is arranged, so that the driving motor drives the second rotating shaft to rotate while rotating, and a second gear on the second rotating shaft rotates; the second gear enables the chassis to rotate in the surface rotation process of the third gear, so that the driving motor rotates; the rotation of the driving motor and the rotation superposition of the circular ring improve the rotating speed of the infrared temperature sensor, so that the infrared temperature sensor can increase the rotating speed of the rotating body, and the application range of the invention is finally improved.

Preferably, the reference circle diameter of the second gear is larger than that of the third gear; when the chassis rotates, the second gear rotates around the third gear in the rotating process, and if the reference circle diameter of the second gear is smaller than that of the third gear, the angular speed of the second gear is smaller in the rotating process, so that the rotating angular speed of the chassis is smaller, and the rotating speed of the chassis is further influenced; the chassis rotates slowly, so that the drive motor rotates slowly, and then the rotating speed of the infrared temperature sensor is influenced, and the application range of the invention is limited.

Preferably, the magnets and the magnetic blocks are of spherical structures, the surfaces of the magnetic blocks are provided with arc grooves, and the magnets are located in the arc grooves; when the infrared temperature sensor works, one end of the infrared temperature sensor, which is positioned at the push rod motor, moves when the infrared temperature sensor deflects, so that relative displacement is generated between the magnet and the magnetic block; if the friction between the magnet and the magnetic block is large, the rotation of the infrared temperature sensor is influenced, so that the measurement is influenced and the measurement error is caused; the magnet and the magnetic block are arranged into a spherical structure, so that the magnet has smaller friction force in the relative movement process with the magnetic block, and meanwhile, the contact between the magnet and the magnetic block is kept; the setting of arc wall makes the magnetite be located the arc wall all the time and removes along the arc wall, has avoided the magnetic path to produce vertically rotation, and then avoids infrared ray temperature sensor to produce unusual rotation for measurement quality can guarantee.

Preferably, a limiting rod is rotatably connected to the side wall of the infrared temperature sensor, the limiting rod is located on one side far away from the guide rail, and the limiting rod is used for positioning the infrared temperature sensor; when the infrared temperature sensor works, due to overhigh rotating speed, the infrared temperature sensor has certain centrifugal force when rotating, and the infrared temperature sensor cannot be rigidly limited only by the attraction of the magnet and the magnetic block; the limiting rod is arranged, so that the limiting rod makes centrifugal motion in the rotating process of the infrared temperature sensor, and the end, away from the infrared temperature sensor, of the limiting rod is tilted; the free end of gag lever post and the inside wall contact of ring for infrared ray temperature sensor's removal is restricted, thereby has carried out the secondary restriction to infrared ray temperature sensor's position, reduces or has avoided infrared ray temperature sensor at the skew that the rotation in-process probably produced.

Preferably, one end of the limiting rod, which is far away from the infrared temperature sensor, is of a pointed structure, and the roughness of the inner side wall of the circular ring is Ra 20-Ra12.5; when the limiting rod works, if the free end of the limiting rod adopts a round head design, the free end of the limiting rod cannot be fixed on the inner side wall of the circular ring, so that the limiting rod can slide when stressed, and the using effect of the limiting rod is further influenced; the free end of the limiting rod is designed into a pointed end, the roughness of the inner side wall of the circular ring is Ra20-Ra12.5, so that the inner side wall of the circular ring is rough, and the free end of the limiting rod is inserted into the inner side wall of the circular ring when being in contact with the circular ring, so that the limiting rod cannot easily rotate when being stressed; the infrared temperature sensor can not rotate under the strong supporting action of the limiting rod, so that the stability of the infrared temperature sensor is improved, and the measuring precision of the infrared temperature sensor is ensured; when the limiting rod needs to be taken out, the output shaft end of the push rod motor is shortened, so that the guide rail is far away from one end, close to the infrared temperature sensor, of the limiting rod, and the free end of the limiting rod can be separated from the circular ring.

The invention has the following beneficial effects:

1. according to the surface temperature sensor, the infrared temperature sensor is driven to rotate, and the angle of the infrared temperature sensor is adjusted, so that the measuring point of the infrared temperature sensor is positioned on the measuring point of the measuring piece, tracking measurement of the rotating body is realized, and the application range of the surface temperature sensor is widened.

2. The surface temperature sensor improves the rotating speed of the surface temperature sensor by using the double-shaft motor, thereby ensuring that the rotating speed of the surface temperature sensor meets the use requirement under the condition that a high-power motor is not suitable, reducing the manufacturing cost and ensuring the use effect.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a three-dimensional view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a schematic view showing the positional relationship between magnets and magnetic blocks;

in the figure: the device comprises a cylinder 1, a chassis 2, a driving motor 3, a first gear 4, a ring 5, a gear ring 6, a push rod motor 7, a guide rail 8, a sliding block 9, an infrared temperature sensor 10, a magnet 11, a magnet block 12, a first rotating shaft 13, a mounting plate 14, a second output shaft 15, a second rotating shaft 16, a second gear 17, a third gear 18, a rotating ring 19, an arc-shaped groove 20 and a limiting rod 21.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, the surface temperature sensor according to the present invention includes a cylinder 1, a base plate 2 is rotatably connected to a top end of the cylinder 1, a through hole is formed in the base plate 2, a driving motor 3 is fixed to the through hole, a first gear 4 is fixed to an output shaft end of the driving motor 3, a ring 5 is rotatably installed in an inner cavity of the cylinder 1, a gear ring 6 is arranged on an inner side wall of the ring 5, the first gear 4 and the gear ring 6 are engaged with each other, a push rod motor 7 and a guide rail 8 are fixed to an inner side wall of the ring 5, a slider 9 is movably installed on the guide rail 8, the guide rail 8 and the slider 9 are both of an arc structure, the guide rail 8 and the slider 9 are concentric, a center of a moving track of the slider 9 is concentric with a center of the slider 9, an infrared temperature sensor 10 is fixed to an end of the slider 9 away from the guide rail, the top end of the infrared temperature sensor 10 is provided with a magnet 12, the magnet 12 and the magnet 11 are mutually attracted, and a controller is arranged in the cylinder 1 and used for controlling the sensor to work; when the infrared temperature sensor 10 works, the existing infrared temperature sensor only usually measures the temperature of an object at a fixed position, and cannot track and measure a revolving body and rotating machinery or equipment, so that the limitation is large, and the problem is improved by the infrared temperature sensor; when the large-scale revolving body is measured, the distance between the large-scale revolving body and the revolving body is changed according to the actual situation; during measurement, the driving motor 3 and the push rod motor 7 are controlled to work according to the diameter value of the revolving body, the infrared temperature sensor 10 is driven to move in the cylinder 1 under the condition that the push rod motor 7 extends or shortens, and the slide block 9 connected with the infrared temperature sensor 10 moves on the guide rail 8, so that the infrared temperature sensor 10 rotates; the axis of the infrared temperature sensor 10 deviates from the axis of the revolving body in the rotating process, so that the measuring point of the infrared temperature sensor 10 deviates; when the infrared temperature sensor 10 deflects a certain angle and then the measuring point thereof is contacted with a designated part of the revolving body or the revolving machine, the work of the push rod motor 7 is stopped, so that the infrared temperature sensor 10 keeps the deflection angle; meanwhile, when the driving motor 3 works, the first gear 4 is driven to rotate, so that the circular ring 5 rotates, and the infrared temperature sensor 10 rotates along the axis of the cylinder 1; the measuring point of the infrared temperature sensor 10 is always contacted with the measuring part of the revolving body or the rotating machinery in the rotating process, so that tracking measurement is realized; the magnet 11 on the push rod motor 7 is always in contact with the magnetic block 12 when moving, so that the stability of the infrared temperature sensor 10 in the rotating process is limited, the infrared temperature sensor 10 is prevented from shaking and rotating greatly, and the problem of measurement failure is avoided; when the infrared temperature sensor 10 is adjusted, the magnet 11 pulls the magnetic block 12 to move, so that the infrared temperature sensor 10 rotates along with the magnet, and the adjustment of the infrared temperature sensor 10 is more convenient; according to the invention, the infrared temperature sensor 10 is driven to rotate, and the angle of the infrared temperature sensor 10 is adjusted, so that the measuring point of the infrared temperature sensor 10 is positioned on the measuring point of the measuring part, the tracking measurement of the rotating body is realized, and the application range of the invention is enlarged.

As a specific embodiment of the present invention, the through hole is not concentric with the chassis 2, the driving motor 3 is eccentrically installed in the chassis 2, a first rotating shaft 13 is rotatably arranged at the top end of the chassis 2, the first rotating shaft 13 is positioned on the axis of the chassis 2, the first rotating shaft 13 is rotatably provided with a mounting disc 14 at one end far away from the chassis 2, the driving motor 3 is a double-shaft motor, the output shaft at the top end of the driving motor 3 is a second output shaft 15, a second rotating shaft 16 is fixed at the second output shaft 15 end of the driving motor 3, a second gear 17 is fixed at one end of the second rotating shaft 16 far away from the driving motor 3, a third gear 18 is fixed on the surface of one end of the first rotating shaft 13 far away from the chassis 2, the second gear 17 and the third gear 18 are meshed with each other, a rotating ring 19 is rotatably mounted on the side wall of the chassis 2, and the top end of the rotating ring 19 is rotatably mounted on the mounting plate 14; when the electric vehicle works, the revolving body is difficult to keep up with the revolving speed because of the high revolving speed of the revolving body; the mounting plate 14 is fixed to a wall or a fixing plate so that the present invention is fixed; the second rotating shaft 16 is arranged, so that the driving motor 3 drives the second rotating shaft 16 to rotate while rotating, and the second gear 17 on the second rotating shaft 16 rotates; the second gear 17 rotates the chassis 2 in the process of rotating the surface of the third gear 18, so that the driving motor 3 rotates; the rotation of the driving motor 3 and the rotation superposition of the circular ring 5 improve the rotation speed of the infrared temperature sensor 10, so that the infrared temperature sensor 10 can further increase the rotation speed of the revolving body, and the application range of the invention is finally improved.

As a specific embodiment of the present invention, the pitch circle diameter of the second gear 17 is larger than the pitch circle diameter of the third gear 18; when the chassis 2 rotates, the second gear 17 rotates around the third gear 18 in the rotating process, and if the reference circle diameter of the second gear 17 is smaller than that of the third gear 18, the angular speed of the second gear 17 is smaller in the rotating process, so that the rotating angular speed of the chassis 2 is smaller, and the rotating speed of the chassis 2 is further influenced; the slower rotation of the chassis 2 causes the slower rotation of the driving motor 3, which in turn affects the rotation speed of the infrared temperature sensor 10, thereby limiting the scope of the present invention.

As a specific embodiment of the present invention, the magnet 11 and the magnetic block 12 are both spherical structures, an arc-shaped groove 20 is formed on the surface of the magnetic block 12, and the magnet 11 is located in the arc-shaped groove 20; when the infrared temperature sensor 10 works, when the infrared temperature sensor deflects, one end of the infrared temperature sensor, which is positioned at the push rod motor 7, moves, so that relative displacement is generated between the magnet 11 and the magnetic block 12; if the friction between the magnet 11 and the magnetic block 12 is large, the rotation of the infrared temperature sensor 10 is influenced, so that the measurement is influenced and a measurement error is caused; by arranging the magnet 11 and the magnetic block 12 into a spherical structure, the magnet 11 has smaller friction force in the process of relative movement with the magnetic block 12, and meanwhile, the contact between the magnet 11 and the magnetic block 12 is kept; the arrangement of the arc-shaped groove 20 enables the magnet 11 to be located in the arc-shaped groove 20 all the time and move along the arc-shaped groove 20, vertical rotation of the magnetic block 12 is avoided, abnormal rotation of the infrared temperature sensor 10 is further avoided, and measuring quality is guaranteed.

As a specific embodiment of the present invention, a limiting rod 21 is rotatably connected to a side wall of the infrared temperature sensor 10, the limiting rod 21 is located at a side far away from the guide rail 8, and the limiting rod 21 is used for positioning the infrared temperature sensor 10; when the infrared temperature sensor 10 works, due to the fact that the rotating speed is too high, a certain centrifugal force is generated when the infrared temperature sensor 10 rotates, and the infrared temperature sensor 10 cannot be rigidly limited only by means of attraction of the magnets 11 and the magnetic blocks 12; by arranging the limiting rod 21, the limiting rod 21 makes centrifugal motion in the rotating process of the infrared temperature sensor 10, so that one end, far away from the infrared temperature sensor 10, of the limiting rod 21 is tilted; the free end of the limiting rod 21 is in contact with the inner side wall of the circular ring 5, so that the movement of the infrared temperature sensor 10 is limited, the position of the infrared temperature sensor 10 is limited secondarily, and the deviation possibly generated in the rotating process of the infrared temperature sensor 10 is reduced or avoided.

As a specific embodiment of the invention, one end of the limiting rod 21, which is far away from the infrared temperature sensor 10, is of a pointed structure, and the roughness of the inner side wall of the circular ring 5 is Ra20-Ra 12.5; when the limiting rod 21 works, if the free end of the limiting rod 21 adopts a round head design, the free end of the limiting rod 21 cannot be fixed on the inner side wall of the circular ring 5, so that the limiting rod 21 can slide when stressed, and the using effect of the limiting rod 21 is further influenced; the free end of the limiting rod 21 is designed to be a pointed end, the roughness of the inner side wall of the circular ring 5 is Ra20-Ra12.5, so that the inner side wall of the circular ring 5 is rough, and the free end of the limiting rod 21 is inserted into the inner side wall of the circular ring 5 when being in contact with the circular ring 5, so that the limiting rod 21 cannot easily rotate when being stressed; the strong supporting action of the limiting rod 21 enables the infrared temperature sensor 10 to be in a condition of being incapable of rotating when rotating, so that the stability of the infrared temperature sensor 10 is improved, and the measuring precision of the invention is further ensured; shorten the output shaft end of push rod motor when gag lever post 21 is taken out to needs for the guide rail is kept away from to the one end that gag lever post 21 is close to infrared temperature sensor, can make the free end and the ring of gag lever post 21 break away from.

When the infrared temperature sensor 10 works, the existing infrared temperature sensor only usually measures the temperature of an object at a fixed position, and cannot track and measure a revolving body and rotating machinery or equipment, so that the limitation is large, and the problem is improved by the infrared temperature sensor; when the large-scale revolving body is measured, the distance between the large-scale revolving body and the revolving body is changed according to the actual situation; during measurement, the driving motor 3 and the push rod motor 7 are controlled to work according to the diameter value of the revolving body, the infrared temperature sensor 10 is driven to move in the cylinder 1 under the condition that the push rod motor 7 extends or shortens, and the slide block 9 connected with the infrared temperature sensor 10 moves on the guide rail 8, so that the infrared temperature sensor 10 rotates; the axis of the infrared temperature sensor 10 deviates from the axis of the revolving body in the rotating process, so that the measuring point of the infrared temperature sensor 10 deviates; when the infrared temperature sensor 10 deflects a certain angle and then the measuring point thereof is contacted with a designated part of the revolving body or the revolving machine, the work of the push rod motor 7 is stopped, so that the infrared temperature sensor 10 keeps the deflection angle; meanwhile, when the driving motor 3 works, the first gear 4 is driven to rotate, so that the circular ring 5 rotates, and the infrared temperature sensor 10 rotates along the axis of the cylinder 1; the measuring point of the infrared temperature sensor 10 is always contacted with the measuring part of the revolving body or the rotating machinery in the rotating process, so that tracking measurement is realized; the magnet 11 on the push rod motor 7 is always in contact with the magnetic block 12 when moving, so that the stability of the infrared temperature sensor 10 in the rotating process is limited, the infrared temperature sensor 10 is prevented from shaking and rotating greatly, and the problem of measurement failure is avoided; when the infrared temperature sensor 10 is adjusted, the magnet 11 pulls the magnetic block 12 to move, so that the infrared temperature sensor 10 rotates along with the magnet, and the adjustment of the infrared temperature sensor 10 is more convenient; according to the invention, the infrared temperature sensor 10 is driven to rotate, and the angle of the infrared temperature sensor 10 is adjusted, so that the measuring point of the infrared temperature sensor 10 is positioned on the measuring point of the measuring part, the tracking measurement of the rotating body is realized, and the application range of the invention is enlarged.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A surface temperature sensor, characterized by: comprises a cylinder (1), the top end of the cylinder (1) is rotatably connected with a chassis (2), a through hole is arranged in the chassis (2), a driving motor (3) is fixed at the through hole, a first gear (4) is fixed at the output shaft end of the driving motor (3), a circular ring (5) is installed in the inner cavity of the cylinder (1) in a rotating manner, a gear ring (6) is arranged on the inner side wall of the circular ring (5), the first gear (4) is meshed with the gear ring (6), a push rod motor (7) and a guide rail (8) are fixed on the inner side wall of the circular ring (5), a sliding block (9) is movably installed on the guide rail (8), the guide rail (8) and the sliding block (9) are both of circular arc-shaped structures, the guide rail (8) and the sliding block (9) are concentric, the circle center of the moving track of the sliding block (9) is concentric with the circle center of the sliding block (9), and an infrared temperature, the output shaft end of the push rod motor (7) is provided with a magnet (11), the top end of the infrared temperature sensor (10) is provided with a magnetic block (12), the magnetic block (12) and the magnet (11) attract each other, a controller is arranged in the cylinder (1), and the controller is used for controlling the sensor to work.

2. A surface temperature sensor according to claim 1, wherein: the through hole is not concentric with the chassis (2), the driving motor (3) is eccentrically installed in the chassis (2), a first rotating shaft (13) is rotatably installed at the top end of the chassis (2), the first rotating shaft (13) is located on the axis of the chassis (2), an installation disc (14) is rotatably installed at one end, far away from the chassis (2), of the first rotating shaft (13), the driving motor (3) is a double-shaft motor, the top end output shaft of the driving motor (3) is a second output shaft (15), a second rotating shaft (16) is fixedly arranged at the end, far away from the driving motor (3), of the second rotating shaft (16) is fixedly provided with a second gear (17), a third gear (18) is fixedly arranged on the surface of one end, far away from the chassis (2), of the first rotating shaft (13), and the second gear (17) and the third gear (18) are mutually meshed, the side wall of the chassis (2) is rotatably provided with a rotating ring (19), and the top end of the rotating ring (19) is rotatably arranged on the mounting disc (14).

3. A surface temperature sensor according to claim 2, wherein: the reference circle diameter of the second gear (17) is larger than that of the third gear (18).

4. A surface temperature sensor according to claim 1, wherein: the magnet (11) and the magnet (12) are both spherical structures, an arc-shaped groove (20) is formed in the surface of the magnet (12), and the magnet (11) is located in the arc-shaped groove (20).

5. A surface temperature sensor according to claim 1, wherein: infrared ray temperature sensor (10) lateral wall is gone up to rotate and is connected with gag lever post (21), gag lever post (21) are located the one side of keeping away from guide rail (8), gag lever post (21) are used for fixing a position infrared ray temperature sensor (10).

6. A surface temperature sensor according to claim 5, wherein: the end, far away from infrared temperature sensor (10), of gag lever post (21) is the prong structure, the roughness of ring (5) inside wall is Ra 20-Ra12.5.