A temperature and humidity sensor protection cage structure against grain extrusion

Abstract

The application discloses a kind of anti-grain extrusion temperature and humidity sensor protective cage structures, including pipe body, the both ends of pipe body are respectively connected with threaded cap by thread structure, metal filter screen is fixedly sleeved in threaded cap, the opposite end face of metal filter screen is respectively abutted with knocking mechanism, knocking mechanism is respectively symmetrically movably arranged in the both sides of pipe body, knocking mechanism is respectively transmission connection big gear, big gear is rotatably installed in pipe body and big gear is fixedly connected with the output shaft of explosion-proof motor, explosion-proof motor is fixedly installed in the side of pipe body, the other side of pipe body is fixedly connected with threaded seat, temperature and humidity sensor probe is connected with threaded seat by thread structure;One side of pipe body is fixedly connected with fixed seat, and one end of mounting rod is fixedly connected with fixed seat. By pipe body cooperation two ends opening setting metal filter screen, form double-layer physical barrier, can effectively resist lateral extrusion and impact generated in the process of grain storage.

Description

Technical Field

[0001] This invention relates to the field of sensor protection technology, specifically to a protective cage structure for temperature and humidity sensors that resists grain compression. Background Technology

[0002] In the grain storage sector, temperature and humidity sensors are core equipment for ensuring grain storage safety. They provide decision-making basis for operations such as ventilation and temperature control by monitoring grain storage environmental parameters in real time. However, in traditional grain warehouses, sensors are exposed to the environment of stacked grain for extended periods, making them susceptible to grain compression, mechanical wear, and environmental corrosion. This leads to decreased measurement accuracy, shortened service life, and even the risk of false alarms. Especially in large grain warehouses, localized temperature and humidity fluctuations caused by grain respiration, if not monitored in a timely manner, can induce mold or insect infestation, resulting in significant economic losses.

[0003] In existing technologies, temperature and humidity sensors are mostly fixed with simple brackets, lacking targeted protective designs. For example, some solutions improve durability by adding a metal shell, but when grains directly impact the metal shell, the shell is prone to deformation, causing pressure damage to the sensor probe. Another solution uses a single filter structure for protection, but if the filter pore size is too large, it is difficult to block fine grain particles, while if the pore size is too small, it is easily blocked by grain dust, affecting the effective acquisition of temperature and humidity data. To address these issues, we propose a protective cage structure for temperature and humidity sensors that resists grain compression. Summary of the Invention

[0004] The purpose of this invention is to provide a protective cage structure for temperature and humidity sensors that resists grain compression, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a protective cage structure for a temperature and humidity sensor resistant to grain compression, comprising a tube body, with threaded caps threaded to both ends of the tube body, and metal filters fixedly fitted inside each threaded cap. A striking mechanism is abutted against the opposite end face of each metal filter. The striking mechanisms are symmetrically and movably arranged on both sides of the tube body. Each striking mechanism is driven by a large gear, which is rotatably mounted inside the tube body and has one end fixedly connected to the output shaft of an explosion-proof motor. The explosion-proof motor is fixedly mounted on one side of the tube body, and a threaded seat is fixedly connected to the other side of the tube body. A temperature and humidity sensor probe is threadedly fitted inside the threaded seat. The end of the large gear away from the explosion-proof motor is coaxially fixedly connected to one end of a transmission shaft. The other end of the transmission shaft is fixedly connected to one end of a rotating connecting rod. A cleaning strip is fixedly connected to the other end of the rotating connecting rod, and the cleaning strip slides against the temperature and humidity sensor probe on the side away from the rotating connecting rod. A fixing seat is fixedly connected to one side of the outer wall of the tube, and one end of the mounting rod is fixedly connected to the fixing seat.

[0006] Preferably, the axis of the mounting rod and the axis of the temperature and humidity sensor probe are arranged parallel to each other, and a cleaning bristle is fixedly connected to the side of the cleaning strip away from the rotating connecting rod. The cleaning bristle slides against the temperature and humidity sensor probe, and the axis of the transmission shaft and the axis of the temperature and humidity sensor probe are coincident.

[0007] Preferably, a mounting base is fixedly connected to the outer wall of the tube body on the side away from the threaded seat, and an explosion-proof motor is fixedly mounted on the mounting base.

[0008] Preferably, the tube body is made of stainless steel, and the pore size of the metal filter screen is 1-3mm.

[0009] Preferably, the striking mechanism includes a supporting shaft, a pinion, a transmission component, a driving component, a cylindrical pin, a connecting rod, a striking rod, a limiting ring, a support frame, and a return spring. One end of the supporting shaft is rotatably connected to the inner wall of the tube, and the other end of the supporting shaft is fixedly connected to the driving component. A pinion is fixedly sleeved on the side of the supporting shaft away from the driving component. The pinion meshes with a large gear. A transmission component is provided between the pinion and the driving component. The transmission component is rotatably sleeved outside the supporting shaft. One end of the transmission component is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to one end of the striking rod. The striking rod is slidably mounted on the support frame. The support frame is fixedly connected to the inner wall of the tube, and the support frames are arranged parallel to each other.

[0010] Preferably, a limiting ring is fixedly sleeved on the side of the striking rod away from the connecting rod, one end of the limiting ring is fixedly connected to one end of the return spring, the other end of the return spring is fixedly connected to the support frame and the return spring is movably sleeved outside the striking rod, and a cylindrical pin is fixedly connected to the end face of the transmission component away from the pinion, the cylindrical pin being located between the driving component and the connecting rod.

[0011] Preferably, the transmission component includes a rotating ring, a hinge rod, and a hinge shaft. The rotating ring is rotatably sleeved on the supporting rotating shaft. One side of the rotating ring is fixedly connected to one end of the hinge rod. The other end of the hinge rod is rotatably connected to one end of the hinge shaft. The other end of the hinge shaft is hinged to a connecting rod. The middle part of the hinge rod is fixedly connected to one end of a cylindrical pin.

[0012] Preferably, the active component includes a fixed ring and a lever. The fixed ring is fixedly sleeved on the end of the support shaft away from the pinion. Levers are fixedly connected to both sides of the fixed ring. The length of the lever is greater than the distance from the cylindrical pin to the center of the support shaft and less than the distance from the hinge shaft to the center of the support shaft.

[0013] Preferably, one end of the striking rod is fixedly connected to a rubber block, and the other end of the striking rod is fixedly connected to a hinge seat, the hinge seat being hinged to the end of the connecting rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The tube body, together with the metal filter screens set at both ends, forms a double-layer physical barrier. This can effectively resist the lateral compression and impact generated by the grain during storage, prevent the sensor probe from being damaged by direct contact with the grain, and ensure air circulation between the inside of the tube body and the outside grain warehouse environment, so that the temperature and humidity sensor probe can accurately sense the temperature and humidity changes in the grain warehouse. 2. When testing is required, start the tapping mechanism in advance. The tapping mechanism will periodically tap the surface of the metal filter screen. The vibration will shake off the dust, grain debris and other impurities attached to the filter screen. This periodic tapping can effectively remove the blockage on the surface of the filter screen, prevent the accumulation of impurities from affecting air circulation, ensure that the temperature and humidity sensor probe is always in a good testing environment, and improve the reliability of the monitoring data. 3. While the striking mechanism is working, the linkage of the transmission shaft, rotating rod, and cleaning strip is simultaneously activated. Since the transmission shaft is fixed coaxially with the large gear, when the large gear rotates under the drive of the explosion-proof motor, the transmission shaft rotates synchronously, thereby driving the rotating rod fixed to it to make a circular motion around the axis of the transmission shaft. The cleaning strip connected to the other end of the rotating rod continuously slides and abuts against the surface of the temperature and humidity sensor probe during the rotation process. This effectively removes interfering substances such as grain dust and water vapor condensate that may be attached to the probe surface, preventing these impurities from affecting the sensor's accurate sensing of temperature and humidity. This ensures that the probe always maintains a clean detection interface, further improving the accuracy and stability of temperature and humidity monitoring data. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the tube body of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the tube body of the present invention from a bottom-view perspective; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B.

[0016] In the diagram: 1. Pipe body; 2. Threaded cap; 3. Metal filter screen; 4. Fixing seat; 5. Mounting rod; 6. Threaded seat; 7. Temperature and humidity sensor probe; 8. Explosion-proof motor; 81. Mounting seat; 9. Striking mechanism; 91. Support shaft; 92. Small gear; 93. Transmission component; 931. Rotating ring; 932. Hinge rod; 933. Hinge shaft; 94. Driving component; 941. Fixing ring; 942. Actuating rod; 95. Cylindrical pin; 96. Connecting rod; 97. Striking rod; 97. Rubber block; 971. Hinge seat; 972. Limiting ring; 98. Support frame; 99. Return spring; 90. Large gear; 10. Transmission shaft; 11. Rotating connecting rod; 12. Cleaning strip; 13. Cleaning bristles; 131. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 Reference Figure 1 , 2 This is the first embodiment of the present invention. This embodiment provides a protective cage structure for a temperature and humidity sensor that resists grain compression. It includes a tube body 1. Both ends of the tube body 1 are respectively fitted with threaded caps 2 through a threaded structure. A metal filter screen 3 is fixedly fitted inside each threaded cap 2. The opposite end faces of the metal filter screen 3 respectively abut against a striking mechanism 9. The striking mechanisms 9 are symmetrically and movably arranged on both sides inside the tube body 1. The striking mechanisms 9 are respectively driven and connected to a large gear 10. The large gear 10 is rotatably installed inside the tube body 1, and one end of the large gear 10 is fixedly connected to the output shaft of an explosion-proof motor 8. The explosion-proof motor 8 is fixedly installed on one side outside the tube body 1. The other side outside the tube body 1 is fixedly connected to a threaded seat 6. A temperature and humidity sensor probe 7 is fitted inside the threaded seat 6 through a threaded structure. The end of the large gear 10 away from the explosion-proof motor 8 is coaxially fixedly connected to one end of a transmission shaft 11. The other end of the transmission shaft 11 is fixedly connected to one end of a rotating connecting rod 12. The other end of the rotating connecting rod 12 is fixedly connected to a cleaning strip 13. The side of the cleaning strip 13 away from the rotating connecting rod 12 slides against the temperature and humidity sensor probe 7. A fixing seat 4 is fixedly connected to one side of the outer wall of the tube body 1, and the fixing seat 4 is fixedly connected to one end of the mounting rod 5.

[0019] Example 2 Reference Figure 1-5This is the second embodiment of the present invention, based on the previous embodiment. Specifically, the axis of the mounting rod 5 and the axis of the temperature and humidity sensor probe 7 are set parallel to each other, ensuring that the temperature and humidity sensor probe 7 can maintain a stable relative position with the grain silo environment during operation. This avoids deviations in the probe's detection direction due to the tilting or offset of the mounting rod 5, thereby ensuring the accuracy and consistency of temperature and humidity data collection in specific areas of the grain silo. It also facilitates manual judgment of the position of the temperature and humidity sensor probe 7 during installation, allowing it to be quickly installed at the preset monitoring point. The axis of the temperature and humidity sensor probe 7 and the axis of the tube 1 are set perpendicular to each other, so that the temperature and humidity sensor probe 7 is located inside the tube 1, allowing it to fully contact the air flowing inside the tube 1. This avoids the probe being directly squeezed or collided with by the grain due to being exposed outside the tube 1, further improving... Protective effect: A cleaning bristle 131 is fixedly connected to the side of the cleaning strip 13 away from the rotating connecting rod 12. The cleaning bristle 131 slides against the temperature and humidity sensor probe 7. The axes of the transmission shaft 11 and the temperature and humidity sensor probe 7 are aligned. When the transmission shaft 11 rotates under the drive of the large gear 10, it can drive the rotating connecting rod 12 to perform a circular motion around the axis of the temperature and humidity sensor probe 7. This allows the cleaning bristle 131 on the cleaning strip 13 to wipe the surface of the temperature and humidity sensor probe 7 360 degrees without dead angles, effectively removing dust, water vapor condensation and other impurities attached to the probe surface, avoiding these impurities from affecting the detection accuracy of the sensor and ensuring the accuracy of temperature and humidity data. The cleaning bristle 131 is made of soft and wear-resistant nylon material, which can ensure the cleaning effect without scratching or damaging the surface of the temperature and humidity sensor probe 7.

[0020] Specifically, a mounting base 81 is fixedly connected to the outer wall of the pipe body 1 on the side away from the threaded seat 6. An explosion-proof motor 8 is fixedly mounted on the mounting base 81. The mounting base 81 securely fixes the explosion-proof motor 8 to the pipe body 1, which not only provides stable support for the explosion-proof motor 8 and prevents it from shifting its position due to vibration during operation, thus affecting the transmission effect with the large gear 10, but also creates a certain distance between the explosion-proof motor 8 and the pipe body 1, which is conducive to the heat dissipation of the explosion-proof motor 8 and avoids the accumulation of heat generated by the motor during long-term operation, thereby ensuring the normal working performance and service life of the motor.

[0021] Specifically, the tube body 1 is made of 316L stainless steel, which has extremely high corrosion resistance and can effectively resist the erosion of the tube body 1 by water vapor, carbon dioxide, and potentially corrosive gases produced by grain respiration in the grain silo environment, thus extending the overall service life of the protective cage. At the same time, 316L stainless steel also has excellent mechanical strength and toughness, and is not easily deformed or damaged under long-term compression and impact of grain, ensuring that the tube body 1 can provide continuous and reliable structural protection for the internal temperature and humidity sensor probe 7. The metal filter screen 3 has a pore size of 1-3mm. This pore size is carefully designed to effectively block grain particles and larger impurities in the grain silo from entering the tube body 1, avoiding direct mechanical damage to the temperature and humidity sensor probe 7 or interference with its normal detection, while also ensuring smooth airflow between the inside of the tube body 1 and the external grain silo environment, so that the temperature and humidity sensor probe 7 can detect changes in temperature and humidity in the grain silo in a timely and accurate manner, ensuring the authenticity and validity of the monitoring data.

[0022] Specifically, the striking mechanism 9 includes a support shaft 91, a pinion 92, a transmission component 93, a driving component 94, a cylindrical pin 95, a connecting rod 96, a striking rod 97, a limiting ring 98, a support frame 99, and a return spring 90. One end of the support shaft 91 is rotatably connected to the inner wall of the tube body 1, and the other end of the support shaft 91 is fixedly connected to the driving component 94. A pinion 92 is fixedly sleeved on the side of the support shaft 91 away from the driving component 94. The pinion 92 meshes with the large gear 10. A transmission component 93 is provided between the pinion 92 and the driving component 94. The transmission component 93 is rotatably sleeved outside the support shaft 91. One end of the transmission component 93 is hinged to one end of the connecting rod 96, and the other end of the connecting rod 96 is hinged to one end of the striking rod 97. The striking rod 97 is slidably mounted on the support frame 99. The support frame 99 is fixedly connected to the inner wall of the tube body 1, and the support frames 99 are arranged parallel to each other.

[0023] Furthermore, a limiting ring 98 is fixedly sleeved on the side of the striking rod 97 away from the connecting rod 96. One end of the limiting ring 98 is fixedly connected to one end of the return spring 90, and the other end of the return spring 90 is fixedly connected to the support frame 99. The return spring 90 is movably sleeved outside the striking rod 97. A cylindrical pin 95 is fixedly connected to the end face of the transmission component 93 away from the pinion 92. The cylindrical pin 95 is located between the driving component 94 and the connecting rod 96.

[0024] Furthermore, the transmission component 93 includes a rotating ring 931, a hinge rod 932, and a hinge shaft 933. The rotating ring 931 is rotatably sleeved on the supporting rotating shaft 91. One side of the rotating ring 931 is fixedly connected to one end of the hinge rod 932, and the other end of the hinge rod 932 is rotatably connected to one end of the hinge shaft 933. The other end of the hinge shaft 933 is hinged to the connecting rod 96, and the middle part of the hinge rod 932 is fixedly connected to one end of the cylindrical pin 95.

[0025] Furthermore, the active component 94 includes a fixed ring 941 and a lever 942. The fixed ring 941 is fixedly sleeved on the end of the support shaft 91 away from the pinion 92. The levers 942 are fixedly connected to both sides of the fixed ring 941. The length of the lever 942 is greater than the distance from the cylindrical pin 95 to the center of the support shaft 91, and the length of the lever 942 is less than the distance from the hinge shaft 933 to the center of the support shaft 91.

[0026] When the explosion-proof motor 8 starts working, its output shaft drives the large gear 10 to rotate. The large gear 10 meshes with the small gears 92 on both sides, thereby driving the support shaft 91 to rotate synchronously. When the support shaft 91 rotates, the fixed ring 941, which is fixedly sleeved at its end, rotates accordingly. The actuating rods 942 on both sides of the fixed ring 941 will periodically contact the cylindrical pins 95 on the transmission component 93 and apply a pushing force. Since the length of the actuating rod 942 is greater than the distance from the cylindrical pin 95 to the center of the support shaft 91, when the actuating rod 942 rotates to contact the cylindrical pin 95, it will push the cylindrical pin 95 to drive the hinge rod 932 to rotate around the support shaft 91 with the rotating ring 931 as the center. The hinge rod 932 pulls the connecting rod 96 through the hinge shaft 933. The connecting rod 96 then drives the striking rod 97 to slide along the support frame 99 away from the metal filter screen 3. At this time, the return spring 90 is compressed by the limiting ring 98 and stored. The elastic potential energy is released when the lever 942 rotates past the cylindrical pin 95, the pushing force on the cylindrical pin 95 disappears, the return spring 90 releases the elastic potential energy, pushes the limit ring 98 to drive the striking rod 97 to quickly reset, and the rubber block 971 at the end of the striking rod 97 will strike the surface of the metal filter screen 3. The setting of the rubber block 971 can not only ensure the striking force to effectively shake off impurities, but also avoid rigid damage to the metal filter screen 3, thus extending the service life of the filter screen. The striking mechanisms 9 on both sides work synchronously under the drive of the large gear 10, and alternately or simultaneously strike the metal filter screen 3 at both ends of the tube body 1 to achieve comprehensive cleaning of the filter screen surface. The entire striking process is automated and does not require manual intervention, ensuring that the metal filter screen 3 always maintains good air permeability during long-term monitoring of grain storage, so that the temperature and humidity sensor probe 7 can accurately and stably collect grain storage environmental data.

[0027] Furthermore, one end of the striking rod 97 is fixedly connected to a rubber block 971, and the other end of the striking rod 97 is fixedly connected to a hinge seat 972, which hinges the end of the connecting rod 96.

[0028] The working principle and process are as follows: A scale line can be set along the length of the mounting rod 5, allowing operators to adjust the sensor's installation position in the grain pile according to the required depth of the grain silo, ensuring the temperature and humidity monitoring point is located in a critical area of ​​the grain pile. During installation, the end of the mounting rod 5 furthest from the fixing seat 4 is fixed to the pre-set mounting frame or the silo wall, so that the entire tube 1 is suspended inside or above the grain pile in the monitoring area. The temperature and humidity sensor probe 7 is connected to the threaded seat 6 via a threaded structure. This detachable design facilitates later calibration, replacement, or maintenance of the sensor without requiring complete disassembly of the protective cage structure, reducing maintenance difficulty and cost. When monitoring the temperature and humidity of the grain... Before testing, the explosion-proof motor 8 was started and operated for 10 minutes. Its output shaft drove the large gear 10 to rotate, and the large gear 10 meshed with the small gears 92 on both sides, thereby driving the support shaft 91 to rotate synchronously. When the support shaft 91 rotated, the fixing ring 941, which was fixedly sleeved at its end, rotated accordingly. The actuating rods 942 on both sides of the fixing ring 941 would periodically contact the cylindrical pins 95 on the transmission component 93 and apply a pushing force. Since the length of the actuating rod 942 was greater than the distance from the cylindrical pin 95 to the center of the support shaft 91, when the actuating rod 942 rotated to contact the cylindrical pin 95, it would push the cylindrical pin 95 to drive the hinge rod 932 to rotate around the support shaft with the rotating ring 931 as the center. Rotation 91 causes hinge rod 932 to pull connecting rod 96 via hinge shaft 933. Connecting rod 96 then drives striking rod 97 to slide along support frame 99 away from metal filter screen 3. At this time, return spring 90 is compressed by limit ring 98, storing elastic potential energy. When actuating rod 942 rotates past cylindrical pin 95, the thrust on cylindrical pin 95 disappears, and return spring 90 releases elastic potential energy, pushing limit ring 98 to drive striking rod 97 to quickly return to its original position. Rubber block 971 at the end of striking rod 97 then strikes the surface of metal filter screen 3. The rubber block 971 ensures the striking force is sufficient to effectively shake off impurities while avoiding rigid damage to metal filter screen 3. To extend the service life of the filter screen, the striking mechanisms 9 on both sides work synchronously under the drive of the large gear 10, alternately or simultaneously striking the metal filter screens 3 at both ends of the tube body 1 to achieve comprehensive cleaning of the filter screen surface. At the same time, the transmission shaft 11 rotates under the drive of the large gear 10, which can drive the rotating connecting rod 12 to perform a circular motion around the axis of the temperature and humidity sensor probe 7, thereby enabling the cleaning bristles 131 on the cleaning strip 13 to wipe the surface of the temperature and humidity sensor probe 7 360 degrees without dead angles, effectively removing dust, water vapor condensate and other impurities attached to the probe surface, avoiding these impurities from affecting the detection accuracy of the sensor, and ensuring the accuracy of temperature and humidity data.Once the time is up, the explosion-proof motor 8 stops working, and the entire striking process is automated, requiring no manual intervention. This ensures that the metal filter 3 maintains good air permeability during long-term monitoring of grain storage, while also cleaning dust adhering to the surface of the temperature and humidity sensor probe 7. This allows the temperature and humidity sensor probe 7 to accurately and stably collect grain storage environmental data. Furthermore, to improve overall air permeability, the tube body 1 can also be evenly perforated with 1-3mm holes, further increasing overall air permeability.

[0029] It should be noted that the above-mentioned electrical and mechanical components are all existing technology products. They are selected, installed and debugged by those skilled in the art according to the needs of use to ensure that all electrical appliances can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. The applicant does not impose specific restrictions here, so it will not be described in detail.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective cage structure for a temperature and humidity sensor resistant to grain compression, comprising a tube body (1), characterized in that: Both ends of the tube (1) are respectively fitted with threaded caps (2) through threaded structures. Metal filter screens (3) are fixedly fitted inside each threaded cap (2). A striking mechanism (9) abuts against the opposite end face of each metal filter screen (3). The striking mechanisms (9) are symmetrically and movably arranged on both sides inside the tube (1). Each striking mechanism (9) is connected to a large gear (10). The large gear (10) is rotatably installed inside the tube (1), and one end of the large gear (10) is fixedly connected to the output shaft of an explosion-proof motor (8). The explosion-proof motor (8) is fixedly installed inside the tube (1). 1) On the outside of the tube body (1), a threaded seat (6) is fixedly connected to the other side of the tube body (1). A temperature and humidity sensor probe (7) is sleeved in the threaded seat (6) through a threaded structure. The end of the large gear (10) away from the explosion-proof motor (8) is coaxially fixedly connected to one end of the transmission shaft (11). The other end of the transmission shaft (11) is fixedly connected to one end of the rotating connecting rod (12). The other end of the rotating connecting rod (12) is fixedly connected to a cleaning strip (13). The side of the cleaning strip (13) away from the rotating connecting rod (12) slides against the temperature and humidity sensor probe (7). A fixing seat (4) is fixedly connected to one side of the outer wall of the tube (1), and the fixing seat (4) is fixedly connected to one end of the mounting rod (5).

2. The protective cage structure for a temperature and humidity sensor resistant to grain compression according to claim 1, characterized in that: The axis of the mounting rod (5) and the axis of the temperature and humidity sensor probe (7) are set parallel to each other. The cleaning strip (13) is fixedly connected to the side away from the rotating connecting rod (12) with cleaning bristles (131). The cleaning bristles (131) slide against the temperature and humidity sensor probe (7). The axis of the transmission shaft (11) and the axis of the temperature and humidity sensor probe (7) are set to coincide.

3. The protective cage structure for a temperature and humidity sensor resistant to grain compression according to claim 1, characterized in that: An installation base (81) is fixedly connected to the outer wall of the tube body (1) away from the threaded seat (6), and an explosion-proof motor (8) is fixedly installed on the installation base (81).

4. The protective cage structure for a temperature and humidity sensor resistant to grain compression according to claim 1, characterized in that: The tube body (1) is made of 316L stainless steel, and the pore size of the metal filter (3) is 1-3mm.

5. The protective cage structure for a temperature and humidity sensor resistant to grain compression according to claim 1, characterized in that: The striking mechanism (9) includes a support shaft (91), a pinion (92), a transmission component (93), a driving component (94), a cylindrical pin (95), a connecting rod (96), a striking rod (97), a limiting ring (98), a support frame (99), and a return spring (90). One end of the support shaft (91) is rotatably connected to the inner wall of the tube body (1), and the other end of the support shaft (91) is fixedly connected to the driving component (94). The pinion (92) is fixedly sleeved on the side of the support shaft (91) away from the driving component (94). The small gear (92) meshes with the large gear (10). A transmission component (93) is provided between the small gear (92) and the driving component (94). The transmission component (93) is rotatably sleeved on the outside of the support shaft (91). One end of the transmission component (93) is hinged to one end of the connecting rod (96). The other end of the connecting rod (96) is hinged to one end of the striking rod (97). The striking rod (97) is slidably mounted on the support frame (99). The support frame (99) is fixedly connected to the inner wall of the tube body (1) and the support frames (99) are arranged parallel to each other.

6. The protective cage structure for a temperature and humidity sensor resistant to grain compression according to claim 5, characterized in that: The striking rod (97) is fixedly sleeved with a limiting ring (98) on the side away from the connecting rod (96). One end of the limiting ring (98) is fixedly connected to one end of the return spring (90). The other end of the return spring (90) is fixedly connected to the support frame (99) and the return spring (90) is movably sleeved outside the striking rod (97). A cylindrical pin (95) is fixedly connected to the end face of the transmission member (93) away from the pinion (92). The cylindrical pin (95) is located between the driving member (94) and the connecting rod (96).

7. The protective cage structure for a temperature and humidity sensor resistant to grain compression according to claim 6, characterized in that: The transmission component (93) includes a rotating ring (931), a hinge rod (932), and a hinge shaft (933). The rotating ring (931) is rotatably sleeved on the support shaft (91). One side of the rotating ring (931) is fixedly connected to one end of the hinge rod (932). The other end of the hinge rod (932) is rotatably connected to one end of the hinge shaft (933). The other end of the hinge shaft (933) is hinged to a connecting rod (96). The middle part of the hinge rod (932) is fixedly connected to one end of a cylindrical pin (95).

8. The protective cage structure for a temperature and humidity sensor resistant to grain compression according to claim 7, characterized in that: The active component (94) includes a fixed ring (941) and a lever (942). The fixed ring (941) is fixedly sleeved on one end of the support shaft (91) away from the pinion (92). The levers (942) are fixedly connected to both sides of the fixed ring (941). The length of the lever (942) is greater than the distance from the cylindrical pin (95) to the center of the support shaft (91) and the length of the lever (942) is less than the distance from the hinge shaft (933) to the center of the support shaft (91).

9. The protective cage structure for a temperature and humidity sensor resistant to grain compression according to claim 8, characterized in that: One end of the striking rod (97) is fixedly connected to a rubber block (971), and the other end of the striking rod (97) is fixedly connected to a hinge seat (972), which hinges the end of the connecting rod (96).

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