A large transmission ratio track conveying device and its detection method

Abstract

The present invention discloses a large transmission ratio track conveying device and its detection method, which includes a track part extending along a first direction, a moving vehicle and a detection component; a motor, an electric control part, a transmission component and a traveling wheel are arranged in the inner cavity of the moving vehicle, the motor is arranged at one end of the inner cavity, the electric control part is arranged at the other end of the inner cavity, the transmission component is sequentially connected between the motor and the traveling wheel through a plurality of transmission parts, and at least two transmission parts overlap in a second direction; the detection component includes a plurality of temperature sensors arranged around the transmission part with the slowest rotation speed. By arranging the transmission component between the motor and the electric control part and making at least two transmission parts overlap in the second direction, the motor, the electric control part and the transmission component are compactly installed in the inner cavity, improving the utilization rate of the internal space; the temperature sensors in the detection component are arranged around a transmission part, making full use of the gap in the inner cavity, further improving the utilization rate of the internal space and facilitating detection at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying structures, and particularly to a large transmission ratio track conveying device and a detection method thereof. Background Art

[0002] A conveying structure is a mechanical system used to move materials or products, and is widely applied in fields such as industrial production and logistics. Through different transmission methods, it efficiently transfers materials from one position to another, greatly improving production efficiency and logistics capabilities. According to actual requirements, various technical routes have been developed for conveying structures, including belt-type conveying structures, chain-type conveying structures, roller-type conveying structures, and track-type conveying structures, etc.

[0003] In the existing conveying system, taking the track-type conveying structure as an example, it mainly includes a track. On the preset track, load-bearing structures such as a moving vehicle and a moving tray are arranged to support materials, and a motor and a transmission structure are coordinated to realize the movement of the above load-bearing structures along the track. Among them, the transmission structure is determined according to the support requirements. In order to meet the design requirements of a large transmission ratio, it is usually designed as a multi-stage transmission structure, resulting in a relatively large overall volume of the track-type conveying structure and a relatively complex internal structure integration. It can only judge whether parts need to be replaced according to its actual working conditions. Once a failure occurs, it is often not discovered and processed in time, thus leading to serious shutdown accidents.

[0004] It can be seen that the track-type conveying structure in the prior art has the technical problems of a relatively large volume and difficulty in detection. Summary of the Invention

[0005] The purpose of the present invention is to provide a track conveying device with a large transmission ratio gear and a detection method thereof, so as to solve the technical problems of a relatively large volume and difficulty in detection existing in the track-type conveying structure in the prior art when it involves a multi-stage transmission structure.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A large transmission ratio track conveying device includes a track portion extending along a first direction, a moving vehicle, and a detection component;

[0008] Wherein, a motor, an electric control unit, a transmission component, and a traveling wheel are arranged in the inner cavity of the moving vehicle. The motor is arranged at one end of the inner cavity, the electric control unit is arranged at the other end of the inner cavity, the transmission component is sequentially connected between the motor and the traveling wheel through a plurality of transmission parts, and at least two transmission parts overlap in a second direction; the detection component includes a plurality of temperature sensors arranged around the transmission part with the slowest rotational speed, and the detection component is used to evaluate the working condition of the transmission component according to the temperature of the temperature sensors.

[0009] Optionally, the transmission assembly includes a worm, a worm gear, a first-stage transmission part, and a second-stage transmission part that are sequentially connected between the motor and the traveling wheel;

[0010] The worm is fixedly connected to the motor shaft of the motor, and the worm gear meshes with the worm; the input end of the first-stage transmission part is coaxially arranged with the worm gear; the input end of the second-stage transmission part is coaxially arranged with the output end of the first-stage transmission part, and the output end of the second-stage transmission part is fixedly connected to the traveling wheel;

[0011] Wherein, the plane where the first-stage transmission part is located does not coincide with the plane where the second-stage transmission part is located.

[0012] Optionally, the first-stage transmission part includes a first gear, a second gear, and a third gear that are sequentially meshed. The first gear is coaxially arranged with the worm gear, and the third gear is coaxially arranged with the input end of the second-stage transmission part; the number of teeth of the first gear, the second gear, and the third gear increases in sequence.

[0013] Optionally, the second-stage transmission part includes a fourth gear, a fifth gear, and a sixth gear that are sequentially meshed; the fourth gear is coaxially arranged with the input end of the first-stage transmission part, and the sixth gear is coaxially arranged with the traveling wheel; the number of teeth of the fifth gear is greater than the number of teeth of the fourth gear and the number of teeth of the sixth gear respectively.

[0014] Optionally, the traveling wheel coincides with the first-stage transmission part in the third direction.

[0015] A detection method for a large transmission ratio track conveying device is applied to a large transmission ratio track conveying device as described above, and includes:

[0016] Step S100: Obtain the temperature values of multiple temperature sensors respectively, and calculate the average temperature value of the transmission part with the slowest rotation speed according to the multiple temperature values;

[0017] Step S200: Judge the working condition of the transmission assembly according to the average temperature value and a preset evaluation rule.

[0018] Optionally, the evaluation rule includes:

[0019] Step S211: When the average temperature value is greater than the first threshold, it is judged that there is abnormal wear in the transmission assembly;

[0020] Step S212: When the average temperature value is less than the first threshold and greater than the second threshold, it is judged that there is slight wear or lack of transmission oil in the transmission assembly;

[0021] Step S213: When the average temperature value is less than the second threshold, it is judged that the transmission assembly is working normally.

[0022] Optionally, before the step S200, the following steps are further included:

[0023] Step S201: Calculate the frictional power Pfriction of the transmission component with the slowest rotational speed;

[0024] The frictional power Pfriction = ;

[0025] is the friction coefficient, T is the torque, is the rotational speed of the transmission component with the slowest rotational speed, is the rotational speed of the transmission component meshing with the measured transmission component, is the radius of the transmission component with the slowest rotational speed, is the radius of the transmission component meshing with the measured transmission component;

[0026] Step S202: Calculate the real-time temperature rise value according to the frictional power Pfriction and the temperature rise coefficient formula; the temperature rise coefficient formula is:

[0027] ;

[0028] wherein, is the temperature rise value, t is the single continuous working time of the motor, is the thermal resistance coefficient;

[0029] Step S203: Add the preset first base value to the temperature rise value to obtain the first threshold; add the preset second base value to the temperature rise value to obtain the second threshold.

[0030] Optionally, the large transmission ratio track conveying device further includes a humidity sensor disposed in the inner cavity. After it is determined that the transmission component has slight wear or lacks transmission oil, the following steps are further included:

[0031] Step S214: Obtain the humidity value of the humidity sensor and determine whether the humidity value is lower than a preset third threshold:

[0032] Step S215: If so, determine that the transmission component has slight wear;

[0033] Step S216: If not, determine that the transmission component lacks transmission oil.

[0034] Optionally, the number of the temperature sensors is at least four, including a first temperature sensing unit, a second temperature sensing unit, a third temperature sensing unit, and a fourth temperature sensing unit;

[0035] The first temperature sensing unit is located on one side of the walking wheel and the motor, the second temperature sensing unit is located on one side of the motor and the previous meshing transmission part, the third temperature sensing unit is located on one side of the electronic control unit and the previous meshing transmission part, and the fourth temperature sensing unit is located on one side of the walking wheel and the electronic control unit;

[0036] After the step S100, the following steps are further included:

[0037] Step S301: Obtain the temperature value T1 of the first temperature sensing unit, the temperature value T2 of the second temperature sensing unit, the temperature value T3 of the third temperature sensing unit, and the temperature value T4 of the fourth temperature sensing unit respectively;

[0038] Step S302: Calculate the temperature value T5 of the transmission part with the slowest rotation speed according to the temperature values T1, T2, T3, T4 and the transmission part temperature calculation formula;

[0039] ;

[0040] Among them, , , , are the heat conduction coefficients between the corresponding sensors and the interference heat sources respectively.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The large transmission ratio track conveying device and its detection method provided by the present invention set the transmission assembly between the motor and the electronic control unit, and make at least two transmission parts coincide in the second direction, so as to compactly install the motor, the electronic control unit and the transmission assembly in the inner cavity, effectively improving the utilization rate of the internal space; then, the temperature sensors in the detection assembly are arranged around a transmission part, making full use of the gaps in the inner cavity, further improving the utilization rate of the internal space, and facilitating the detection assembly to evaluate the working conditions of the transmission assembly according to the temperature of the temperature sensors, and prompting possible problems such as wear, poor lubrication or excessive load, so as to realize early warning of faults. In summary, the large transmission ratio track conveying device and its detection method of the present invention have the advantages of compact structure and convenient detection. Description of the Drawings

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0044] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the ratio relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0045] Figure 1 It is a schematic diagram of the overall structure of the large transmission ratio track conveying device provided by an embodiment of the present invention;

[0046] Figure 2 It is a schematic diagram of the first sectional structure of the large transmission ratio track conveying device provided by an embodiment of the present invention;

[0047] Figure 3 It is a schematic diagram of the second sectional structure of the large transmission ratio track conveying device provided by an embodiment of the present invention;

[0048] Illustration: 100, track part; 200, moving vehicle; 210, motor; 220, electronic control part; 230, transmission component; 231, worm; 232, worm wheel; 233, first gear; 234, second gear; 235, third gear; 236, fourth gear; 237, fifth gear; 238, sixth gear; 240, traveling wheel; 250, detection space. Detailed implementation manners

[0049] In order to make the invention purposes, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be intermediate components present at the same time.

[0051] The technical solutions of the present invention will be further described below in conjunction with the drawings and through specific implementation manners.

[0052] Embodiment 1:

[0053] This embodiment provides a large transmission ratio track conveying device, which can be applied to scenarios such as workpiece transportation, material transportation, and intelligent curtain opening and closing. In this embodiment, by improving the structure of the large transmission ratio track conveying device, the torque release of the internal motor 210 reaches the maximum, and the design requirements of the large transmission ratio are met in the smallest possible space, while making the structure simpler and easier to assemble.

[0054] As Figures 1 to 3 shown, the large transmission ratio track conveying device in this embodiment includes a track portion 100 extending in the first direction, a moving vehicle 200, and a detection component; wherein, a motor 210, an electric control portion 220, a transmission component 230, and a walking wheel 240 are arranged in the inner cavity of the moving vehicle 200. The motor 210 is arranged at one end of the inner cavity, and the electric control portion 220 is arranged at the other end of the inner cavity, so that the transmission component 230 can be arranged in the gap between the motor 210 and the electric control portion 220. The transmission component 230 is sequentially connected to the motor 210 and the walking wheel 240 through a plurality of transmission parts, and at least two transmission parts overlap in the second direction; the detection component includes a plurality of temperature sensors arranged around the transmission part with the slowest rotation speed, and the detection component is used to evaluate the working condition of the transmission component 230 according to the temperature of the temperature sensors. It should be noted that the electric control portion 220 mainly includes structures such as an electric control board and a battery, and can provide power and control instructions for the motor 210 and the detection component.

[0055] Specifically, in this embodiment, the large transmission ratio track conveying device installs the transmission component 230 between the motor 210 and the electric control portion 220, and makes at least two transmission parts overlap in the second direction, so as to compactly install the motor 210, the electric control portion 220, and the transmission component 230 in the inner cavity, effectively improving the utilization rate of the internal space; then, the temperature sensors in the detection component are arranged around a transmission part, making full use of the gap in the inner cavity, further improving the utilization rate of the internal space, and facilitating the detection component to evaluate the working condition of the transmission component 230 according to the temperature of the temperature sensors, and prompting possible problems such as wear, poor lubrication, or excessive load, so as to realize early warning of faults. In summary, this large transmission ratio track conveying device has the advantages of compact structure and convenient detection.

[0056] In this embodiment, the transmission assembly 230 includes a worm 231, a worm gear 232, a first-stage transmission part, and a second-stage transmission part that are sequentially connected between the slave motor 210 and the traveling wheel 240; the worm 231 is fixedly connected to the motor shaft of the motor 210, and the worm gear 232 meshes with the worm 231; the input end of the first-stage transmission part is coaxially arranged with the worm gear 232; the input end of the second-stage transmission part is coaxially arranged with the output end of the first-stage transmission part, and the output end of the second-stage transmission part is fixedly connected to the traveling wheel 240; wherein, the plane where the first-stage transmission part is located does not coincide with the plane where the second-stage transmission part is located. It can be understood that the worm 231 is fixedly connected to the motor shaft of the motor 210, and the worm gear 232 meshes with the worm 231 to form a basic power transmission system; then, the input end of the first-stage transmission part is coaxially arranged with the worm gear 232, so that the power continues to be transmitted to the next stage; the second-stage transmission part is coaxially connected to the output end of the first-stage transmission part to realize the final output of the power and drive the traveling wheel 240 to move. It should be particularly noted that the plane where the first-stage transmission part is located does not coincide with the plane where the second-stage transmission part is located, which avoids structural conflicts, makes the spatial layout of the device more compact, and further improves the utilization rate of space.

[0057] As a specific implementation manner, the first-stage transmission part includes a first gear 233, a second gear 234, and a third gear 235 that are sequentially meshed. The first gear 233 is coaxially arranged with the worm gear 232, and the third gear 235 is coaxially arranged with the input end of the second-stage transmission part; the number of teeth of the first gear 233, the second gear 234, and the third gear 235 increases in sequence. The first gear 233 is coaxially arranged with the worm gear 232 as the starting link of the transmission chain; the second gear 234 meshes with the first gear 233 to continue transmitting the power; the third gear 235 is coaxially arranged with the input end of the second-stage transmission part to finally transmit the power to the second-stage transmission part and drive the traveling wheel 240 to move. Among them, the design of increasing the number of teeth of the gears in sequence ensures a gradually increasing transmission ratio. This design not only ensures the transmission efficiency, but also can reduce the problem of excessive load caused by a large transmission ratio, avoid the phenomenon of poor gear meshing or excessive wear, thereby improving the working stability and reliability of the system; it can also effectively disperse the pressure during the transmission process and reduce the problem of excessive wear caused by a single gear bearing too much weight. Through reasonable tooth number arrangement, not only the structure of the device is optimized, but also the operation efficiency is improved.

[0058] As a specific embodiment, the secondary transmission part includes a fourth gear 236, a fifth gear 237, and a sixth gear 238 that are meshed in sequence; the fourth gear 236 is coaxially arranged with the input end of the primary transmission part, and the sixth gear 238 is coaxially arranged with the traveling wheel 240; the number of teeth of the fifth gear 237 is greater than the number of teeth of the fourth gear 236 and the number of teeth of the sixth gear 238 respectively. It can be understood that the fourth gear 236 is coaxially arranged with the third gear 235 to achieve synchronous rotation between the two gears, and the fifth gear 237 is the largest among the fourth gear 236, the fifth gear 237, and the sixth gear 238. The fourth gear 236 and the sixth gear 238 are similar in size, which means that the fifth gear 237 is the transmission part with the slowest rotation speed. At the same time, the fifth gear 237 is not the gear that directly drives the traveling wheel 240 to rotate, which can effectively disperse the mechanical stress during the power transmission process, reduce the occurrence of gear wear, and avoid the high-load situation where all the power output is directly borne by the gear with the slowest rotation speed, thereby reducing the risk of system instability caused by excessive load.

[0059] On the basis of the above embodiment, the traveling wheel 240 coincides with the primary transmission part along the third direction, while the secondary transmission part at least partially does not coincide with the traveling wheel 240 along the third direction. At the same time, the secondary transmission part is closer to the traveling wheel 240, which means that a relatively large detection space 250 is formed above the traveling wheel 240. The detection space 250 can be arranged with detection components, further improving the space utilization rate and making the overall structure more compact.

[0060] Embodiment 2:

[0061] On the basis of Embodiment 1, this embodiment also provides a detection method for a large transmission ratio track conveying device, which is applied to a large transmission ratio track conveying device in Embodiment 1 and includes:

[0062] Step S100: Obtain the temperature values of multiple temperature sensors respectively, and calculate the average temperature value of the transmission part with the slowest rotation speed according to the multiple temperature values; for Embodiment 1, that is, obtain the average temperature value of the fifth gear 237, and then indirectly evaluate the working condition of the overall transmission component 230 by evaluating this gear with the largest load;

[0063] Step S200: Judge the working condition of the transmission component 230 according to the average temperature value and the preset evaluation rules.

[0064] Specifically, the evaluation rules include:

[0065] Step S211: When the average temperature value is greater than the first threshold, it is judged that the transmission component 230 has abnormal wear;

[0066] Step S212: When the average temperature value is less than the first threshold and greater than the second threshold, it is determined that there is slight wear or lack of transmission oil in the transmission assembly 230;

[0067] Step S213: When the average temperature value is less than the second threshold, it is determined that the transmission assembly 230 is working properly.

[0068] Furthermore, the high-ratio transmission track conveying device further includes a humidity sensor disposed in the inner cavity. After determining that there is slight wear or lack of transmission oil in the transmission assembly 230, the following steps are further included:

[0069] Step S214: Obtain the humidity value of the humidity sensor and determine whether the humidity value is lower than a preset third threshold:

[0070] Step S215: If so, it is determined that there is slight wear in the transmission assembly 230;

[0071] Step S216: If not, it is determined that the transmission assembly 230 lacks transmission oil.

[0072] It can be understood that by arranging the temperature sensor around the fifth gear 237, the working temperature of the fifth gear 237 can be accurately monitored, and the working state of the transmission assembly 230 can be reflected in real time. If the temperature of the fifth gear 237 is too high, it means that there may be problems such as excessive wear, poor lubrication or excessive load. The system can give an immediate warning, avoiding the shutdown of the high-ratio transmission track conveying device due to faults, thereby improving the stability and operation safety of the equipment. In addition, through the dual monitoring of temperature and humidity, potential faults caused by insufficient lubrication or too high temperature can be detected earlier, reducing the risk of unexpected shutdown of the equipment and enhancing the reliability of the entire system; when the humidity value is too low, it indicates that the transmission oil of the fifth gear 237 is insufficient, increasing friction and wear, and further exacerbating the temperature rise of the gear. Complementary to the temperature monitoring, a more comprehensive fault warning system is formed to ensure that the lubrication condition of the fifth gear 237 is always monitored.

[0073] On the basis of the above embodiments, before step S200, the following steps are further included:

[0074] Step S201: Calculate the friction power Pfriction of the transmission part with the slowest rotational speed;

[0075] The friction power Pfriction = ;

[0076] is the friction coefficient, T is the torque, is the rotational speed of the transmission part with the slowest rotational speed, is the rotational speed of the transmission part meshing with the measured transmission part, is the radius of the transmission part with the slowest rotational speed, is the radius of the transmission part meshing with the transmission part to be measured;

[0077] Step S202: Calculate the real-time temperature rise value according to the friction power Pfriction and the temperature rise coefficient formula. The temperature rise coefficient formula is:

[0078] ;

[0079] where, is the temperature rise value, t is the single continuous working time of the motor 210, is the thermal resistance coefficient;

[0080] Step S203: Add the preset first base value to the temperature rise value to obtain the first threshold; add the preset second base value to the temperature rise value to obtain the second threshold.

[0081] It should be noted that the friction coefficient is determined according to the material of the above-mentioned gear; the torque T, the rotation speed of the slowest rotating transmission part , the rotation speed of the transmission part meshing with the transmission part to be measured , the radius of the slowest rotating transmission part , the radius r2 of the transmission part meshing with the transmission part to be measured are determined by the motor 210 and the transmission assembly 230; then, the single continuous working of the motor 210 refers to the process that the walking wheel 240 moves from the previous position to the next position along the track, and the thermal resistance coefficient depends on the material and shape of the transmission part, and is set to 0.05 - 0.1 in this embodiment; the first base value and the second base value are determined according to parameters such as the actual working condition, safety factor, and environmental temperature. For example, the first base value can be 45° - 48°, and the second base value is 58° - 60°. When installed in the northern region, the first base value can be 45° and the second base value is 58°.

[0082] Based on the above implementation manner, the number of temperature sensors is at least four, including a first temperature sensing unit, a second temperature sensing unit, a third temperature sensing unit, and a fourth temperature sensing unit;

[0083] The first temperature sensing unit is located on one side of the walking wheel 240 and the motor 210, the second temperature sensing unit is located on one side of the motor 210 and the previous meshing transmission part, the third temperature sensing unit is located on one side of the electronic control unit 220 and the previous meshing transmission part, and the fourth temperature sensing unit is located on one side of the walking wheel 240 and the electronic control unit 220;

[0084] After step S100, it further includes:

[0085] Step S301: Obtain the temperature value T1 of the first temperature sensing unit, the temperature value T2 of the second temperature sensing unit, the temperature value T3 of the third temperature sensing unit, and the temperature value T4 of the fourth temperature sensing unit respectively;

[0086] Step S302: Calculate the temperature value T5 of the transmission part with the slowest rotation speed according to the temperature values T1, T2, T3, T4 and the transmission part temperature calculation formula; Using this temperature calculation formula can further reduce the influence brought by the self-heating of the motor 210 and the electronic control unit 220, thereby improving the judgment accuracy;

[0087] ;

[0088] Among them, , , , are the heat conduction coefficients between the corresponding sensors and the interference heat sources respectively. The above heat conduction coefficient α only reflects the influence of the motor 210 on the fifth gear 237, and the above heat conduction coefficient β only reflects the influence of the electronic control unit 220 on the fifth gear 237. This parameter is affected by multiple parameters such as the distance from the sensing unit to the heat source, the thermal conductivity of the material, the layout of the gearbox, and the path of heat flow. Specifically, it can be measured by experimental measurement method, simulation method, theoretical calculation method, etc. The experimental measurement method measures the temperature changes in different areas of the gearbox through experiments, and combines the known heat source power and material properties to inversely deduce the heat conduction coefficient. The simulation method can calculate the heat conduction coefficients at various positions according to the heat source intensities of the motor 210, the electronic control unit 220 and the transmission component 230, the sensor positions, and the material thermal conductivity; The theoretical calculation method uses Fourier's law to deduce, and the thermal conductivity ;

[0089] is the thermal conductivity of the material in the inner cavity, d is the distance from the motor 210 or the electronic control unit 220 to the sensing unit. In this embodiment, a set of optional thermal conductivity coefficients is = 3000W / m 2 ·K, = 2500W / m 2 ·K, = 2750W / m 2 ·K, = 2000W / m 2 ·K. Through the above settings, the interference of other heat sources can be reduced more accurately, so as to more accurately judge the working conditions of the transmission component 230 from the heat generation of the fifth gear 237.

[0090] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detection method for a large transmission ratio track conveyor, characterized in that: Applied to a large transmission ratio track conveying device, the large transmission ratio track conveying device comprising a track portion extending along a first direction, a mobile carrier and a detection component; The inner cavity of the mobile carrier is provided with a motor, an electric control unit, a transmission assembly and a running wheel, the motor is provided at one end of the inner cavity, the electric control unit is provided at the other end of the inner cavity, the transmission assembly is sequentially connected between the motor and the running wheel through a plurality of transmission members, and at least two transmission members overlap in the second direction; the detection assembly includes a plurality of temperature sensors arranged around the transmission member with the slowest rotation speed, the number of the temperature sensors is at least four, including a first temperature sensing unit, a second temperature sensing unit, a third temperature sensing unit and a fourth temperature sensing unit; The first temperature sensing unit is located on one side of the running wheel and the motor, the second temperature sensing unit is located on one side of the motor and the last meshed transmission member, the third temperature sensing unit is located on one side of the electric control unit and the last meshed transmission member, and the fourth temperature sensing unit is located on one side of the running wheel and the electric control unit; The detection component is used to evaluate the working condition of the transmission component according to the temperature of the temperature sensor; Detection methods include: Step S100, respectively acquiring temperature values ​​of a plurality of temperature sensors, and calculating an average temperature value of the transmission component with the slowest rotation speed according to the plurality of temperature values; Step S200, judging the working condition of the transmission component according to the average temperature value and a preset evaluation rule; After step S100, the method further includes: Step S301, respectively acquiring a temperature value T1 of a first temperature sensing unit, a temperature value T2 of a second temperature sensing unit, a temperature value T3 of a third temperature sensing unit, and a temperature value T4 of a fourth temperature sensing unit; Step S302, calculating the temperature value T5 of the transmission part with the slowest rotation speed according to the temperature value T1, the temperature value T2, the temperature value T3, the temperature value T4 and the transmission part temperature calculation formula; ； in, , , , are the thermal conductivity coefficients between the corresponding sensors and the interfering heat sources, respectively.

2. The detection method of a large transmission ratio rail conveyor according to claim 1, characterized in that: The evaluation rules include: Step S211: when the average temperature value is greater than the first threshold, it is determined that the transmission component has abnormal wear; Step S212: when the average temperature value is less than the first threshold value and greater than the second threshold value, it is determined that the transmission component is slightly worn or lacks transmission oil; Step S213: When the average temperature value is less than the second threshold, it is determined that the transmission component is operating normally.

3. The detection method of a large transmission ratio rail conveyor according to claim 2 is characterized in that: Before step S200, the method further includes: Step S201, calculating the friction power Pfriction of the transmission part with the slowest rotation speed; Friction power Pfriction= ; is the friction coefficient, T is the torque, is the speed of the slowest transmission part, is the speed of the transmission member meshing with the transmission member being measured, is the radius of the transmission part with the slowest rotation speed, is the radius of the transmission member meshing with the transmission member being measured; Step S202: Calculate the real-time temperature rise value according to the friction power Pfriction and the temperature rise coefficient formula; the temperature rise coefficient formula is: ； in, is the temperature rise value, t is the single continuous working time of the motor, is the thermal resistance coefficient; Step S203: Add the preset first base value and the temperature rise value to obtain a first threshold value; and add the preset second base value and the temperature rise value to obtain a second threshold value.

4. The detection method of a large transmission ratio rail conveyor according to claim 1, characterized in that: The high transmission ratio track conveying device further includes a humidity sensor disposed in the inner cavity to determine whether the transmission component is slightly worn or lacks transmission oil, and then further includes: Step S214: Obtain the humidity value of the humidity sensor, and determine whether the humidity value is lower than a preset third threshold: Step S215: If yes, it is determined that the transmission component is slightly worn; Step S216: If not, determine that the transmission component lacks transmission oil.

5. A large transmission ratio track conveying device, characterized in that: A detection method for a large transmission ratio rail conveyor device as described in any one of claims 1 to 4; The transmission assembly (230) comprises a worm (231), a worm wheel (232), a primary transmission part and a secondary transmission part, which are sequentially connected between the motor (210) and the travel wheel (240); The worm (231) is fixedly connected to the motor shaft of the motor (210), and the worm wheel (232) is meshed with the worm (231); the input end of the primary transmission part is coaxially arranged with the worm wheel (232); the input end of the secondary transmission part is coaxially arranged with the output end of the primary transmission part, and the output end of the secondary transmission part is fixedly connected to the walking wheel (240); Wherein, the plane where the primary transmission part is located does not overlap with the plane where the secondary transmission part is located.

6. A large transmission ratio rail conveyor according to claim 5, characterized in that: The primary transmission part comprises a first gear (233), a second gear (234) and a third gear (235) which are meshed in sequence; the first gear (233) is coaxially arranged with the worm gear (232); the third gear (235) is coaxially arranged with an input end of the secondary transmission part; and the number of teeth of the first gear (233), the second gear (234) and the third gear (235) increases in sequence.

7. A large transmission ratio rail conveyor according to claim 5, characterized in that: The secondary transmission part comprises a fourth gear (236), a fifth gear (237) and a sixth gear (238) which are meshed in sequence; the fourth gear (236) is coaxially arranged with the input end of the primary transmission part, and the sixth gear (238) is coaxially arranged with the walking wheel (240); the number of teeth of the fifth gear (237) is greater than the number of teeth of the fourth gear (236) and the number of teeth of the sixth gear (238).

8. A large transmission ratio rail conveyor according to claim 5, characterized in that: The traveling wheel (240) overlaps with the primary transmission part along the third direction.

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