A drive chain oiling system

Abstract

The application discloses a transmission chain oiling system, which comprises a transmission chain, a first sprocket and an oiling and lubricating device, wherein the transmission chain is annular; the first sprocket is horizontally arranged on the axis and engaged with the transmission chain, and the transmission chain is tensioned; and the oiling and lubricating device is used for spraying lubricating oil on the transmission chain when the transmission chain is detected to be curved downward and folded due to lack of lubricating oil. The transmission chain oiling system provided by the application solves the problem of manual detection and maintenance of downward bending and folding of the transmission chain, especially for large transmission chains, and has the problems of high labor intensity and low automation degree.

Description

Technical Field

[0001] This invention relates to, but is not limited to, a transmission chain lubrication system, and more specifically, to an automated transmission chain lubrication system for a gypsum board dryer conveyor roller conveyor. Background Technology

[0002] The gypsum board production line's batching system includes a material forming and drying system. In the drying system, the drive chain of the gypsum board dryer's conveyor rollers is tensioned by sprockets to perform transmission motion. The chain links experience frequent contact transmission. Due to wear, tension loss, and the reduction of lubricating oil applied to the chain over time, bending and kinking may occur at one or more points on the drive chain, requiring the addition of lubricating oil. The bending and kinking of the drive chain in the gypsum board dryer's conveyor rollers significantly affects the transmission stability and conveying speed uniformity of the dryer's conveyor rollers.

[0003] In existing technology, workers need to frequently and manually inspect the drive chain of the gypsum board dryer's conveyor rollers to determine if the chain is bent or kinked, and the specific location of any bends or kinks. Then, lubricant is applied to a certain length of the chain near the bend or kink location. Because the gypsum board dryer's conveyor roller production line is quite long, and the drive chain has multiple layers with each layer also being quite long, the workload for workers checking for bends and kinks and applying lubricant is substantial, resulting in low work efficiency. Summary of the Invention

[0004] Embodiments of this application provide a transmission chain lubrication system, which includes a lubrication device capable of automatically detecting chain kinks and bends and automatically applying lubricating oil to the chain. This application solves the problem of high labor intensity caused by manual inspection and maintenance in current transmission chain lubrication systems, especially for large transmission chains.

[0005] The technical solution of this application embodiment is as follows:

[0006] A drive chain lubrication system, comprising:

[0007] The drive chain is circular.

[0008] A first sprocket, its axis horizontally positioned, meshes with the drive chain and tensions the drive chain; and

[0009] A lubrication device is used to spray lubricating oil onto the transmission chain when it is detected that the chain is bent or kinked due to lack of lubrication.

[0010] In some exemplary embodiments, the refueling and lubrication device includes a detection component, an oil injection component, and a control component;

[0011] The detection component detects whether the transmission chain is bent or kinked and needs lubrication, and the location where the transmission chain, which is tensioned into a straight line by the first sprocket, is bent or kinked downwards and needs lubrication.

[0012] The oil spraying assembly is disposed on one side of the transmission chain and is used to spray lubricating oil onto the transmission chain;

[0013] The control component is electrically connected to the detection component and the oil spraying component, and is configured to drive the oil spraying component to spray lubricating oil onto the transmission chain when the detection component detects that the transmission chain is bent or kinked.

[0014] When the portion of the transmission chain that is tensioned into a straight line by the first sprocket bends downward, the maximum vertical displacement of the transmission chain from its original position in a tensioned straight line state is greater than or equal to the lubrication deviation threshold, and is defined as the transmission chain lacking lubrication.

[0015] In some exemplary embodiments, the detection component includes a first sensor disposed below the portion of the drive chain that is tensioned into a straight line by the first sprocket;

[0016] The first sensor is a photoelectric sensor that emits light in a horizontal direction. The first sensor determines, through the optical path, whether the transmission chain is bent or kinked downwards and needs lubrication, and the location of the downward bend or kink in the transmission chain.

[0017] The vertical distance between the light output end of the first sensor and the original state of the transmission chain being tensioned into a straight line is equal to the oil shortage deviation threshold.

[0018] In some exemplary embodiments, the lubrication device further includes a counting component electrically connected to the control component;

[0019] The counting component is used to count the length of the transmission chain that has been coated when the oil spraying component sprays lubricating oil onto the transmission chain;

[0020] The control component is further configured to control the oil spraying component to stop spraying lubricating oil when the length is greater than or equal to a preset length.

[0021] In some exemplary embodiments, the preset length is equal to the length of the drive chain.

[0022] In some exemplary embodiments, the counting component is a photoelectric counting component; the transmission chain includes multiple links connected in sequence;

[0023] The photoelectric counting component is used to deduce the length of the sprayed transmission chain by counting the number of teeth or tooth grooves of the first sprocket passing through a set position during the application of lubricating oil by the oil spraying component.

[0024] In some exemplary embodiments, the drive chain includes a plurality of links connected in sequence;

[0025] The counting photoelectric component includes a second sprocket and a photoelectric counter. The second sprocket is configured to mesh with the portion of the transmission chain that is tensioned into a straight line. The photoelectric counter counts the number of teeth on the second sprocket that pass through a set position.

[0026] In some exemplary embodiments, the control component drives the oil spraying component to spray lubricating oil onto the drive chain, including:

[0027] When the counting photoelectric component completes one count, it drives the spraying component to spray one of the chain links.

[0028] In some exemplary embodiments, the oil injection assembly includes a plunger pump and an injector nozzle in communication with the plunger pump, the plunger pump being used to pump lubricating oil to the injector nozzle so that the lubricating oil is sprayed from the injector nozzle onto the drive chain.

[0029] In some exemplary embodiments, the transmission chain lubrication system is applied to the multi-layer transmission chain of the conveyor roller conveyor of the gypsum board dryer. The transmission chain lubrication system also includes an oil storage tank, an electric main gate valve, a main pipeline, and a graded pipeline.

[0030] Multiple oiling and lubrication devices and multiple transmission chains are provided, and each oiling and lubrication device and transmission chain is provided in a one-to-one correspondence.

[0031] One end of the main pipeline is connected to the oil storage tank, and the other end of the main pipeline is connected to the inlet of each stage pipeline;

[0032] The multiple graded pipelines respectively deliver lubricating oil to the multiple refueling and lubrication devices;

[0033] The electric main gate valve is installed on the main pipeline.

[0034] In some exemplary embodiments, one or more of the tiered pipelines are provided with an electric gate valve, which is located between the lubrication device and the main electric gate valve.

[0035] The beneficial effects of the transmission chain lubrication system in this application embodiment are as follows:

[0036] In existing transmission chain lubrication systems, workers need to manually inspect the bending and kinking locations of the chain and manually apply lubricating oil, resulting in high labor intensity. The transmission chain lubrication system provided in this application is equipped with a lubrication device that can automatically detect the lack of oil and bending / kinking locations of the transmission chain, and automatically spray lubricating oil onto the bent / kinked transmission chain. This improves the efficiency of the bending / kinking location detection and lubrication processes, reduces labor intensity, and is beneficial for improving the automation level of conveyor production lines using chain and sprocket drives.

[0037] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description and the accompanying drawings. Attached Figure Description

[0038] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0039] Figure 1 This is a schematic diagram of the transmission chain lubrication system according to an embodiment of this application;

[0040] Figure 2 A schematic diagram of the lubrication system for the multi-layer drive chain of the conveyor roller of the gypsum board dryer.

[0041] Attachment Number:

[0042] 1-Drive chain, 11-Downward bending position, 12-Chain link, 2-First sprocket, 21-Axis, 3-Lubrication device, 31-Detection component, 311-First sensor, 3111-Light output end, 32-Injection component, 321-Plunger pump, 322-Injector nozzle, 33-Control component, 34-Counting component, 341-Photoelectric counting component, 342-Second sprocket, 3421-Groove, 343-Photoelectric counter, 4-Oil reservoir, 5-Electric main gate valve, 6-Main pipeline, 7-Stage pipeline, 8-Electric gate valve, H-Insufficient oil deviation threshold Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be arbitrarily combined with each other.

[0044] Please see Figure 1-2The diagram shows a structural schematic of the transmission chain lubrication system according to an embodiment of this application. Figure 1 As shown, this application embodiment provides a transmission chain lubrication system, including a transmission chain 1, a first sprocket 2, and a lubrication device 3. The transmission chain 1 is ring-shaped; the axis 21 of the first sprocket 2 is horizontally arranged, meshes with the transmission chain 1, and tensions the transmission chain 1; the lubrication device 3 is used to spray lubricating oil onto the transmission chain 1 when it is detected that the transmission chain 1 is bent or kinked due to lack of lubrication.

[0045] The transmission chain lubrication system of this application embodiment can be applied to the transmission chain of the conveyor roller of the gypsum board dryer, but is not limited to the transmission chain of the conveyor roller of the gypsum board dryer. It can also be applied to other large-scale production lines that require transmission chains and sprockets to drive materials.

[0046] Specifically, the drive chain 1 and the first sprocket 2 engage in transmission, with the first sprocket 2 tensioning the drive chain 1. The first sprocket 2 can be either a drive sprocket or a transmission sprocket. When the first sprocket 2 is a drive sprocket, the output shaft of the drive mechanism is mounted at its axis 21; when the first sprocket 2 is a transmission sprocket, a support shaft fixed to the frame is mounted at its axis 21. The lubrication device 3 is used to automatically detect bending and kinking of the drive chain 1 and apply lubricating oil.

[0047] Due to transmission wear, tension loss, and the reduction of lubricating oil applied to the transmission chain 1 over time, the transmission chain 1 may experience bending or kinking at one or more locations. For example, the bending or kinking of the transmission chain in the conveyor roller of a gypsum board dryer has a significant impact on the transmission stability and conveying speed uniformity of the transmission chain.

[0048] In existing transmission chain lubrication systems, workers need to manually inspect the bending and kinking positions of the transmission chain 1 and manually apply lubricant to a specified length of the transmission chain 1, resulting in high labor intensity. The transmission chain lubrication system provided in this application includes a lubrication device 3, which can automatically detect the lack of lubrication, bending, and kinking positions of the transmission chain 1, and automatically spray lubricant onto the bent and kinked transmission chain 1. This improves the efficiency of the process of detecting bending and kinking positions of the transmission chain, improves the efficiency of the chain lubrication process, reduces labor intensity, and is beneficial to improving the automation level of conveyor production lines using chain and sprocket drives.

[0049] In some exemplary implementations, such as Figure 1 As shown, the refueling and lubrication device 3 includes a detection component 31, an oil injection component 32, and a control component 33;

[0050] The detection component 31 detects whether the transmission chain 1 is bent or kinked and needs lubrication, and the location 11 where the transmission chain 1 is bent or kinked downwards and needs lubrication, which is the part of the transmission chain 1 that is tensioned into a straight line by the first sprocket 2;

[0051] The oil spraying assembly 32 is located on one side of the transmission chain 1 and is used to spray lubricating oil onto the transmission chain 1.

[0052] The control component 33 is electrically connected to the detection component 31 and the oil spraying component 32, and is configured to drive the oil spraying component 32 to spray lubricating oil onto the transmission chain 1 when the detection component 31 detects that the transmission chain 1 is bent or kinked.

[0053] Among them, such as Figure 1 As shown, when the part of the transmission chain 1 that is tensioned into a straight line by the first sprocket 2 bends downward, the transmission chain 1 deviates from its original position where it is in a tensioned straight line state. The maximum displacement along the vertical direction is L1. When L1 is greater than or equal to the oil shortage deviation threshold H, it is defined as the transmission chain 1 lacking lubricating oil.

[0054] Specifically, based on the actual working conditions of the production system using chain and sprocket transmission, when the transmission chain 1 deviates from its normal straight position where it is tensioned, and the maximum vertical displacement is H, the chain transmission speed and material transmission efficiency of the transmission system are affected to a certain extent. The transmission chain 1 is defined as being in a critical state between a state of lack of lubrication and bending and a normal working state, that is, H is defined as the lack of lubrication deviation threshold.

[0055] Therefore, when the detection component 31 detects that the transmission chain 1 is bent or folded downwards, deviating from the original position where the transmission chain 1 is in a taut straight state, the maximum displacement along the vertical direction is L1. If L1 is greater than or equal to H, the transmission chain 1 is defined as lacking lubricating oil.

[0056] Specifically, the detection component 31 can employ photoelectric detection to detect whether the transmission chain 1 deviates from its original tensioned position and exceeds the lubrication deviation threshold H. Alternatively, the detection component 31 can be configured to first establish an outer spatial frame for the normal operating space of the transmission chain 1 based on the lubrication deviation threshold H. If the transmission chain 1 contacts or collides with this outer spatial frame, it indicates a lubrication deficiency, bending, or kinking. A sensor is then placed on the surface of the outer spatial frame to detect the specific bending or kinking position of the transmission chain 1. Finally, the control component 33 drives the oil spraying component 32 to spray lubricating oil onto the chain near the bending or kinking position.

[0057] In some exemplary embodiments, such as Figure 1 As shown, the detection component 31 includes a first sensor 311, which is disposed below the portion of the transmission chain 1 that is tensioned into a straight line by the first sprocket 2.

[0058] The first sensor 311 is a photoelectric sensor. The photoelectric sensor emits light along the horizontal direction. The first sensor 311 determines through the light path whether the transmission chain 1 is bent or kinked downwards and needs to be lubricated, and the position of the transmission chain 1 bent or kinked downwards.

[0059] The vertical distance between the light output end 3111 of the first sensor 311 and the part of the transmission chain 1 that is tensioned into a straight line is L2, where L2 is equal to the oil shortage deviation threshold H.

[0060] Specifically, the first sensor 311 is configured as a photoelectric sensor, which has a relatively simple structure, occupies little space, and has high detection efficiency. For example... Figure 1 As shown, the vertical distance between the light output terminal 3111 of the photoelectric sensor and the original state of the transmission chain 1 when it is taut and straight is L2, which should satisfy L2 = H. The photoelectric sensor emits light in the horizontal direction. If the transmission chain 1 is bent or kinked downwards, the emitted light will encounter the bent or kinked link and return; if the transmission chain 1 is not bent or kinked downwards, the emitted light will directly propagate to a predetermined reflection point or light receiving point. Therefore, by calculating the optical path return time, it is possible to confirm whether the transmission chain 1 is bent or kinked downwards, and the specific location where the bending or kinking occurs.

[0061] In some exemplary embodiments, the lubrication device 3 further includes a counting component 34 electrically connected to the control component 33;

[0062] The counting component 34 is used to count the length of the transmission chain 1 that has been sprayed when the oil spraying component 32 sprays lubricating oil onto the transmission chain;

[0063] The control component 33 is also configured to control the oil spraying component 32 to stop spraying lubricating oil when the length is greater than or equal to a preset length.

[0064] Specifically, by setting a counting component 34 to count the length of the sprayed transmission chain 1, and setting a control component 33 to control the length of the sprayed transmission chain 1, the lubrication device 3 of this embodiment can apply lubricating oil to a set length of the transmission chain 1. For example, lubricating oil can be applied to the part of the transmission chain 1 that is bent or folded downwards, saving the amount of lubricating oil used; of course, lubricating oil can also be applied to the entire length of the transmission chain 1 once or multiple times.

[0065] In some exemplary embodiments, the preset length is equal to the length of the drive chain 1.

[0066] Specifically, the preset length is set to be equal to the length of the transmission chain 1, and then lubricating oil is applied to the entire length of the transmission chain 1.

[0067] In some exemplary embodiments, such as Figure 1 As shown, the counting component 34 is a photoelectric counting component 341;

[0068] The photoelectric counting component 341 is used to deduce the length of the sprayed transmission chain 1 by counting the number of teeth or grooves of the first sprocket 2 passing through a set position during the application of lubricating oil by the oil spraying component 32.

[0069] Optionally, the photoelectric counting component 341 emits light along a direction parallel to the axis 21 of the first sprocket 2 towards a designated position on the outer contour of the first sprocket 2. As the first sprocket 2 rotates, the light emitted by the photoelectric counting component 341 alternately transmits between passing through the tooth groove of the first sprocket 2 and being blocked and reflected back by the teeth of the first sprocket 2, thereby realizing the counting of the rotation angle of the first sprocket 2, and calculating the length of the sprayed transmission chain 1 through the parameters of the sprocket and chain drive.

[0070] Optionally, the photoelectric counting component 341 emits light towards the first sprocket 2 in a direction perpendicular to the axis 21 of the first sprocket 2. As the first sprocket 2 rotates, the light emitted by the photoelectric counting component 341 alternates between being blocked and reflected back at the outer contour of the teeth of the first sprocket 2 and being blocked and reflected back at the outer contour of the tooth groove of the first sprocket 2, thereby realizing the counting of the rotation angle of the first sprocket 2 and calculating the length of the sprayed transmission chain 1 through the basic parameters of the sprocket and chain drive.

[0071] In some exemplary embodiments, such as Figure 1 As shown, the transmission chain 1 includes multiple chain links 12 connected in sequence;

[0072] The counting photoelectric component 34 includes a second sprocket 342 and a photoelectric counter 343. The second sprocket 342 is configured to mesh with the part of the transmission chain 1 that is tensioned into a straight line. The photoelectric counter 343 counts the number of times the second sprocket 342 passes through the tooth groove 3421 at a set position.

[0073] Specifically, the counting photoelectric component 34 includes a second sprocket 342 and a photoelectric counter 343. The second sprocket 342 is configured to mesh with the transmission chain 1. The counting component 34 is configured to count the number of teeth 3421 passed by the second sprocket 342 at a set position. This structure is suitable for situations in transmission chain lubrication systems where there is not enough space to arrange the counting component 34 near the first sprocket 2.

[0074] In some exemplary embodiments, such as Figure 1 As shown, the control component 33 drives the oil spraying component 32 to spray lubricating oil onto the transmission chain 1, including:

[0075] When the counting photoelectric component 34 completes one count, it drives the spraying component 32 to spray one link 12.

[0076] Specifically, once the counting photoelectric component 34 completes one count, the oil spraying component 32 is driven to spray one link 12, which can precisely control the length of the transmission chain 1 to be sprayed with lubricating oil, thereby saving lubricating oil.

[0077] In some exemplary embodiments, such as Figure 2 As shown, the oil injection assembly 32 includes a plunger pump 321 and an oil injector 322 connected to the plunger pump 321. The plunger pump 321 is used to pump lubricating oil to the oil injector 322 so that the lubricating oil is sprayed from the oil injector 322 onto the drive chain 1.

[0078] Specifically, Figure 2 A lubrication system for a multi-layer drive chain production line is shown, with an oil spraying assembly 32 installed near each layer of drive chain 1.

[0079] In some exemplary embodiments, such as Figure 2 As shown, the transmission chain lubrication system is applied to the multi-layer transmission chain 1 of the conveyor roller of the gypsum board dryer. The transmission chain lubrication system also includes an oil storage tank 4, an electric main gate valve 5, a main pipeline 6, and a graded pipeline 7.

[0080] Multiple lubrication devices 3 and multiple transmission chains 1 are provided, with each lubrication device 3 and transmission chain 1 corresponding to the other.

[0081] One end of the main pipeline 6 is connected to the oil storage tank 4, and the other end of the main pipeline 6 is connected to the inlet of each stage pipeline 7;

[0082] Multiple graded pipelines 7 respectively deliver lubricating oil to multiple refueling and lubrication devices 3;

[0083] The electric main gate valve 5 is installed on the main pipeline 6.

[0084] Specifically, in the lubrication system of the multi-layer transmission chain of the gypsum board dryer conveyor roller, by setting multiple lubrication devices 3 one-to-one with the multi-layer transmission chain 1, lubricating oil can be accurately sprayed onto the transmission chain 1 where the chain bends or folds downward.

[0085] An electric main gate valve 5 is installed on the main pipeline 6. The electric main gate valve 5 cuts off the pipeline between the oil reservoir 4 and the plunger pump 321 to prevent on-site leakage caused by the aging of the plunger pump 321.

[0086] In some exemplary embodiments, such as Figure 2 As shown, one or more of the graded pipelines 7 are equipped with electric gate valves 8, which are located between the oiling and lubrication device 3 and the main electric gate valve 5.

[0087] Specifically, by installing an electric gate valve 8 on one or more of the graded pipelines 7, the lubrication device 3 corresponding to the transmission chain 1 of a designated layer can be more precisely controlled to apply lubricating oil to the transmission chain 1 of that layer, preventing on-site leakage problems caused by aging of multiple plunger pumps 321.

[0088] In the description of this application, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", ""mouth" structure, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0089] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0090] Although the embodiments disclosed in this application are as described above, the content described is merely for the purpose of understanding this application and is not intended to limit this application. Any person skilled in the art to which this application pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be defined by the appended claims.

Claims

1. A transmission chain lubrication system, characterized in that, include: The drive chain is circular. The first sprocket has its axis set horizontally, meshes with the transmission chain, and tensions the transmission chain; as well as A lubrication device is used to spray lubricating oil onto the transmission chain when it is detected that the transmission chain is bent or kinked due to lack of lubrication oil. The refueling and lubrication device includes a detection component, an oil injection component, and a control component; The detection component detects whether the transmission chain is bent or kinked and needs lubrication, and the location where the transmission chain, which is tensioned into a straight line by the first sprocket, is bent or kinked downwards and needs lubrication. The oil spraying assembly is disposed on one side of the transmission chain and is used to spray lubricating oil onto the transmission chain; The control component is electrically connected to the detection component and the oil spraying component, and is configured to drive the oil spraying component to spray lubricating oil onto the transmission chain when the detection component detects that the transmission chain is bent or kinked. When the portion of the transmission chain that is tensioned into a straight line by the first sprocket bends downward, the maximum vertical displacement of the transmission chain from its original position in a tensioned straight line state is greater than or equal to the lubrication deviation threshold, and is defined as the transmission chain lacking lubrication.

2. The transmission chain lubrication system according to claim 1, characterized in that, The detection component includes a first sensor, which is disposed below the portion of the transmission chain that is tensioned into a straight line by the first sprocket; The first sensor is a photoelectric sensor that emits light in a horizontal direction. The first sensor determines, through the optical path, whether the transmission chain is bent or kinked downwards and needs lubrication, and the location of the downward bend or kink in the transmission chain. The vertical distance between the light output end of the first sensor and the original state of the transmission chain being tensioned into a straight line is equal to the oil shortage deviation threshold.

3. The transmission chain lubrication system according to claim 1 or 2, characterized in that, The lubrication device also includes a counting component electrically connected to the control component; The counting component is used to count the length of the transmission chain that has been coated when the oil spraying component sprays lubricating oil onto the transmission chain; The control component is further configured to control the oil spraying component to stop spraying lubricating oil when the length is greater than or equal to a preset length.

4. The transmission chain lubrication system according to claim 3, characterized in that, The preset length is equal to the length of the transmission chain.

5. The transmission chain lubrication system according to claim 3, characterized in that, The counting component is a photoelectric counting component; the transmission chain includes multiple links connected in sequence; The photoelectric counting component is used to deduce the length of the sprayed transmission chain by counting the number of teeth or tooth grooves of the first sprocket passing through a set position during the application of lubricating oil by the oil spraying component.

6. The transmission chain lubrication system according to claim 5, characterized in that, A drive chain consists of multiple links connected in sequence; The photoelectric counting component includes a second sprocket and a photoelectric counter. The second sprocket is configured to mesh with the portion of the transmission chain that is tensioned into a straight line. The photoelectric counter counts the number of teeth on the second sprocket that pass through a set position.

7. The transmission chain lubrication system according to claim 5 or 6, characterized in that, The control component drives the oil spraying component to spray lubricating oil onto the transmission chain, including: When the photoelectric counting component completes one count, it drives the spraying component to spray one of the chain links.

8. The transmission chain lubrication system according to claim 1 or 2, characterized in that, The oil injection assembly includes a plunger pump and an oil injector connected to the plunger pump. The plunger pump is used to pump lubricating oil to the oil injector so that the lubricating oil is sprayed from the oil injector onto the drive chain.

9. The transmission chain lubrication system according to claim 1 or 2, characterized in that, The transmission chain lubrication system is applied to the multi-layer transmission chain of the conveyor roller conveyor of the gypsum board dryer. The transmission chain lubrication system also includes an oil storage tank, an electric main gate valve, a main pipeline, and a graded pipeline. Multiple oiling and lubrication devices and multiple transmission chains are provided, and each oiling and lubrication device and transmission chain is provided in a one-to-one correspondence. One end of the main pipeline is connected to the oil storage tank, and the other end of the main pipeline is connected to the inlet of each stage pipeline; The multiple graded pipelines respectively deliver lubricating oil to the multiple refueling and lubrication devices; The electric main gate valve is installed on the main pipeline.

10. The transmission chain lubrication system according to claim 9, characterized in that, One or more of the graded pipelines are equipped with electric gate valves, which are located between the oiling and lubrication device and the electric main gate valve.

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