A delivery device

Abstract

This utility model belongs to the field of electronic display equipment manufacturing technology and discloses a conveying device. Multiple conveying components are arranged parallel to each other along the conveying direction of the workpiece to be processed, jointly supporting and conveying the same workpiece. Each conveying component includes a driving pulley, a driven pulley, and a conveyor belt surrounding both. The driving component's driving member is fixed to the frame, with its output end connected to the first end of a driving shaft. The second end of the driving shaft is rotatably connected to the frame. The driving shaft connects to multiple driving pulleys, and both ends of the driven shaft are rotatably connected to the frame, connecting to multiple driven pulleys. A tensioning component corresponds one-to-one with the conveying components. The tensioning component includes a tensioning wheel, a driving cylinder, a guide rail, and a slider. The cylinder barrel is fixed to the frame, and the cylinder rod is connected to the first end of the slider. The slider slides against the guide rail fixed to the frame. The tensioning wheel is rotatably connected to the second end of the slider and abuts against the corresponding conveyor belt, thereby improving the convenience of adjusting the conveyor belt tension during workpiece conveying and ensuring the stability of workpiece conveying.

Description

Technical Field

[0001] This utility model relates to the field of electronic display equipment manufacturing technology, and in particular to a conveying device. Background Technology

[0002] New display material substrates and carrier glass are key strategic materials in the electronic information display industry, and their production requires conveyor belt transmission for flow processing on the production line. Currently, when producing large-sized parts (substrates or carrier glass), each transmission mechanism typically consists of 7-9 conveyor belts. After equipment installation and commissioning, the tension of each conveyor belt can be guaranteed to be consistent. However, after the equipment has been running for a period of time, inconsistent tension of the conveyor belts is prone to occur. If not addressed in time, this will lead to an imbalance in the synchronization of the conveyor belts, causing the parts to be transported off-center, which in turn affects the stopping position accuracy of the parts, and may even cause damage to the parts due to scratching the edges of the equipment. At the same time, loose conveyor belts will shift outwards, accelerating their own wear and potentially scratching the parts. Therefore, the tension of the conveyor belts needs to be checked frequently, but adjustments require stopping production and shutting down the machine, which is not only time-consuming but also reduces equipment uptime and restricts production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a conveying device to solve the problem of inconvenient adjustment of conveyor belt tension during the conveying of workpieces, and to improve the stability and ease of adjustment of the conveying of workpieces.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A conveying device for conveying workpieces to be processed, the conveying device comprising:

[0006] frame;

[0007] Multiple conveying components are arranged in parallel along the conveying direction of the workpiece to be processed, and together support and convey the same workpiece to be processed. Each of the conveying components includes a driving pulley, a driven pulley, and a conveyor belt surrounding the driving pulley and the driven pulley.

[0008] The drive assembly includes a drive component, a drive shaft, and a driven shaft. The drive component is fixed to the frame, and its output end is connected to the first end of the drive shaft. The second end of the drive shaft is rotatably connected to the frame. Multiple drive pulleys are connected to the drive shaft. Both ends of the driven shaft are rotatably connected to the frame, and multiple driven pulleys are connected to the driven shaft.

[0009] Multiple tensioning components are provided, each corresponding to one of the multiple conveying components. Each tensioning component includes a tensioning wheel, a drive cylinder, a guide rail, and a slider. The cylinder barrel of the drive cylinder is fixed to the frame, and the cylinder rod of the drive cylinder is connected to the first end of the slider. The slider slides in cooperation with the guide rail fixed to the frame. The tensioning wheel is rotatably connected to the second end of the slider and abuts against the corresponding conveyor belt.

[0010] As an alternative to the conveying device, the conveying device further includes a first protective cover, which includes a fixed part fixed to the frame and a telescopic part. The fixed part covers the outside of the cylinder, and the first end of the telescopic part is connected to the fixed part, and the second end is connected to the slider and moves with the slider. The telescopic part covers the outside of the cylinder rod.

[0011] As an alternative to the conveying device, the fixed part is provided with an air inlet that communicates with an external air source, which is used to introduce dry gas into the first protective cover.

[0012] As an alternative to the conveying device, the conveying device further includes a second protective cover, the first end of which is fixed to the guide rail, the second end of which is connected to the slider and can move with the slider, and the second protective cover covers the mating part of the guide rail and the slider.

[0013] As an alternative to the conveying device, the drive cylinder is provided with a first pipeline and a second pipeline. The first pipeline is connected to the rodless chamber of the drive cylinder, and the second pipeline is connected to the rod chamber of the drive cylinder. The first pipeline and the second pipeline are used to convey the driving medium.

[0014] As an alternative to the conveying device, the first pipeline is provided with a first pressure regulating valve, which is used to regulate the pressure of the driving medium input into the rodless chamber of the drive cylinder.

[0015] As an alternative to the conveying device, the second pipeline is provided with a second pressure regulating valve, which is used to regulate the pressure of the driving medium input into the rod chamber of the drive cylinder.

[0016] As an alternative to the conveying device, the conveying assembly also includes a support plate, which is fixedly connected to the frame and located inside the conveyor belt, and the support plate is used to support the conveyor belt.

[0017] As an alternative to the conveying device, the support plate has two limiting protrusions on one side facing the conveyor belt, and the conveyor belt is located between the two limiting protrusions.

[0018] As an alternative to the conveying device, the top of the limiting protrusion is lower than the conveying surface of the conveyor belt.

[0019] Beneficial effects:

[0020] This invention provides a conveying device that effectively ensures the stability and positional accuracy of the workpiece during transport by setting up multiple synchronously driven conveying components in conjunction with an adjustable tensioning component. The drive components, through a single drive shaft linking multiple drive pulleys, ensure the coordinated synchronous operation of each conveyor belt while simplifying the transmission structure. The tensioning component, independently set for each conveyor belt, uses a drive cylinder to precisely control the displacement of the tensioning wheel, achieving rapid adjustment and stable maintenance of the conveyor belt tension. The cooperative structure of the guide rail and slider ensures the linearity and stability of the tensioning wheel's movement, effectively preventing swaying during adjustment. The overall structure of this conveying device is compact and reasonable, not only solving the slippage and deviation problems common in traditional conveying devices but also significantly improving its adaptability to workpieces of different specifications, making the conveying operation of workpieces more reliable and efficient. Attached Figure Description

[0021] Figure 1 This is a first schematic diagram of the conveying device provided in an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 A magnified view of position A in the middle;

[0023] Figure 3 This is a second schematic diagram of the conveying device provided in an embodiment of the present utility model;

[0024] Figure 4 This is a cross-sectional schematic diagram of the conveyor belt and support plate provided in an embodiment of the present utility model.

[0025] In the picture:

[0026] 100. Parts to be processed;

[0027] 1. Conveying assembly; 11. Drive pulley; 12. Driven pulley; 13. Conveyor belt; 14. Support plate; 141. Limiting protrusion;

[0028] 2. Drive assembly; 21. Drive component; 22. Drive shaft; 23. Driven shaft;

[0029] 3. Tensioning assembly; 31. Tensioning wheel; 32. Drive cylinder; 33. Guide rail; 34. Slider; 321. Cylinder barrel; 322. Cylinder rod; 323. First pipeline; 324. Second pipeline; 325. First pressure regulating valve; 326. Second pressure regulating valve;

[0030] 4. First protective cover; 41. Fixing part; 42. Telescopic part; 43. Air inlet; 5. Second protective cover. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of the device. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper" and "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] This embodiment provides a conveying device for conveying a workpiece 100 to be processed, such as... Figures 1-3As shown, the conveying device includes a frame (not shown), multiple conveying components 1, a drive component 2, and multiple tensioning components 3. The multiple conveying components 1 are arranged parallel to each other along the conveying direction of the workpiece 100, jointly supporting and conveying the same workpiece 100. Each conveying component 1 includes a driving pulley 11, a driven pulley 12, and a conveyor belt 13 surrounding the driving pulley 11 and the driven pulley 12. The drive component 2 includes a drive member 21, a drive shaft 22, and a driven shaft 23. The drive member 21 is fixed to the frame, its output end is connected to the first end of the drive shaft 22, and the second end of the drive shaft 22 is connected to the frame. The drive shaft 22 is rotatably connected to the frame, and the driven shaft 23 is rotatably connected to both ends of the frame, and the driven shaft 23 is connected to multiple driven pulleys 12. The tensioning assembly 3 corresponds one-to-one with the conveying assembly 1. The tensioning assembly 3 includes a tensioning wheel 31, a drive cylinder 32, a guide rail 33, and a slider 34. The cylinder barrel 321 of the drive cylinder 32 is fixed to the frame, and the cylinder rod 322 of the drive cylinder 32 is connected to the first end of the slider 34. The slider 34 is slidably engaged with the guide rail 33 fixed to the frame. The tensioning wheel 31 is rotatably connected to the second end of the slider 34 and abuts against the corresponding conveyor belt 13.

[0036] The conveying device, through the use of multiple synchronously driven conveying components 1 and adjustable tensioning components 3, effectively ensures the stability and positional accuracy of the workpiece 100 during conveying. The drive component 2, with its design of a single drive shaft 22 linking multiple drive pulleys 11, ensures the coordinated synchronous operation of each conveyor belt 13 while simplifying the transmission structure. The tensioning components 3, independently configured for each conveyor belt 13, precisely control the displacement of the tensioning wheel 31 via a drive cylinder 32, enabling rapid adjustment and stable maintenance of the conveyor belt tension. The cooperative structure of the guide rail 33 and the slider 34 ensures the linearity and stability of the tensioning wheel 31's movement, effectively preventing swaying during adjustment. This conveying device has a compact and reasonable overall structure, not only solving the slippage and deviation problems common in traditional conveying devices but also significantly improving its adaptability to workpieces 100 of different specifications, making the conveying operation of the workpiece 100 more reliable and efficient.

[0037] In this embodiment, as Figure 3 As shown, the workpiece 100 is a plate-shaped novel display material substrate or carrier glass. Seven sets of conveying assemblies 1 are provided according to the size of the workpiece 100, and the seven sets of conveying assemblies 1 are synchronously driven by a driving assembly 2. In other embodiments, eight or nine sets of conveying assemblies 1 can be provided according to the size of the workpiece 100, and correspondingly, eight or nine sets of tensioning assemblies 3 are provided.

[0038] like Figure 2As shown, the conveying device also includes a first protective cover 4. The first protective cover 4 includes a fixed part 41 fixed to the frame and a telescopic part 42. The fixed part 41 covers the outside of the cylinder 321. The first end of the telescopic part 42 is connected to the fixed part 41, and its second end is connected to the slider 34 and moves with the slider 34. The telescopic part 42 covers the outside of the cylinder rod 322. To prevent the workpiece 100 from being scratched during conveying, a water spraying assembly is provided on the conveyor belt 13. By spraying water to increase lubrication, the friction between the conveyor belt 13 and the workpiece 100 during operation can be reduced. The first protective cover 4 of the conveying device has a fixed part 41 fixed to the frame and covering the cylinder 321, and a telescopic part 42 that moves with the slider 34 and covers the cylinder rod 322. Its main function is waterproofing, preventing spray water from contacting the cylinder 321 and cylinder rod 322, preventing water from corroding the drive cylinder 32, ensuring the stable operation of the drive cylinder 32, and thus ensuring the reliable transmission of the conveying assembly 1. Together with the spray water assembly, it reduces the risk of scratches on the workpiece 100 during transport. It should be noted that the spray water assembly is existing technology and will not be described in detail here.

[0039] In this embodiment, the fixing part 41 can be made of stainless steel or engineering plastic. Stainless steel has good corrosion resistance and oxidation resistance, and can maintain structural stability in humid environments for a long time. Engineering plastics, such as polyamide (nylon), have high mechanical strength and toughness, good impact resistance, excellent oil resistance and chemical corrosion resistance, strong resistance to spray water, and are lightweight. The telescopic part 42 can be made of canvas or rubber. Canvas (coated canvas, waterproof canvas) is tough, flexible, and wear-resistant. After coating or waterproofing treatment, its waterproof performance is greatly improved, its telescopic performance is good, and its cost is low. Among rubber materials, neoprene rubber has good flexibility and elasticity, can adapt to frequent movement of the slider 34, has strong aging resistance, and is not easy to crack or harden in various environments. Nitrile rubber has excellent oil resistance, can remain stable even if a small amount of lubricating oil is mixed in the spray water, and has good flexibility and wear resistance.

[0040] like Figure 2 As shown, the fixing part 41 is provided with an air inlet 43 that communicates with an external air source. The air inlet 43 is used to introduce dry gas into the first protective cover 4, which can further reduce the humidity inside the protective cover. Even if a small amount of sprayed water accidentally seeps in, the dry gas can quickly carry away the moisture or evaporate it, preventing the cylinder barrel 321 and cylinder rod 322 from rusting due to moisture. This more effectively ensures the stable operation of the drive assembly 2 and ensures the reliable transmission of the conveying assembly 1. In this embodiment, the external air source can be compressed air or nitrogen. Compressed air is readily available and inexpensive. After drying, it can meet the requirement of introducing dry gas into the first protective cover 4, effectively reducing the humidity inside the protective cover. Nitrogen has stable chemical properties, does not easily react with other substances, and has a high degree of dryness, which can reliably ensure a dry environment inside the protective cover and prevent the cylinder barrel 321 and cylinder rod 322 from rusting due to moisture.

[0041] like Figure 2 As shown, the conveying device also includes a second protective cover 5. The first end of the second protective cover 5 is fixed to the guide rail 33, and the second end of the second protective cover 5 is connected to the slider 34 and can move with the slider 34. The second protective cover 5 covers the mating part of the guide rail 33 and the slider 34. The second protective cover 5 can effectively block external dust, impurities, and spray water from contacting the mating part of the guide rail 33 and the slider 34, avoiding the decrease in the mating accuracy or jamming caused by foreign objects entering. At the same time, it prevents water erosion from causing rust on the guide rail 33 and the slider 34, ensuring the smooth sliding of the slider 34 on the guide rail 33, thereby ensuring the stable operation of the conveying component 1, reducing abnormal conveying of the workpiece 100 due to equipment failure, and further reducing the risk of scratches on the workpiece 100 in conjunction with other protective structures.

[0042] In this embodiment, the second protective cover 5 is made of canvas or rubber. The canvas (coated canvas, waterproof canvas) is tough, flexible and wear-resistant. After being coated or waterproofed, its waterproof performance is greatly improved. It also has good elasticity and low cost. Among the rubber materials, neoprene rubber has good flexibility and elasticity, can adapt to the frequent movement of the slider 34, has strong aging resistance, and is not easy to crack or harden in various environments. Nitrile rubber has excellent oil resistance. It can remain stable even if a small amount of lubricating oil is mixed into the spray water, and it also has good flexibility and wear resistance.

[0043] like Figure 2 As shown, the drive cylinder 32 is provided with a first pipe 323 and a second pipe 324. The first pipe 323 is connected to the rodless chamber of the drive cylinder 32, and the second pipe 324 is connected to the rod chamber of the drive cylinder 32. The first pipe 323 and the second pipe 324 are used to transport the driving medium. When the driving medium enters the rodless chamber through the first pipe 323, it pushes the piston to extend the cylinder rod 322 outward, realizing the movement of the slider 34. When the driving medium enters the rod chamber through the second pipe 324, the piston retracts the cylinder rod 322 under pressure, causing the slider 34 to return to its original position. This design, which controls the entry and exit of the medium into different chambers through separate pipes, can precisely regulate the extension and retraction of the drive cylinder 32, ensuring that the slider 34 moves stably along the expected trajectory. This ensures the orderly operation of the conveying assembly 1, provides reliable power support for the smooth transport of the workpiece 100, reduces transport deviations caused by unstable power transmission, and further reduces the risk of scratches on the workpiece 100 when combined with other protective structures. In this embodiment, the drive cylinder 32 is a pneumatic cylinder or a hydraulic cylinder.

[0044] like Figure 2As shown, the first pipeline 323 is equipped with a first pressure regulating valve 325, which is used to regulate the pressure of the driving medium in the rodless chamber of the input drive cylinder 32. By adjusting the first pressure regulating valve 325, the pressure in the rodless chamber can be precisely controlled, thereby changing the thrust on the piston and controlling the extension speed and force of the cylinder rod 322. When the slider 34 needs to move smoothly, the pressure in the rodless chamber can be reduced to decrease the piston thrust and allow the cylinder rod 322 to extend slowly; if the slider 34 needs to move quickly to improve conveying efficiency, the pressure can be increased to increase the extension speed of the cylinder rod 322. This pressure regulation capability allows the action of the drive cylinder 32 to better match the conveying requirements of the workpiece 100, ensuring the stability and controllability of the slider 34's movement, avoiding excessive thrust that could cause the slider 34 to move too violently and cause the workpiece 100 to shake or deviate, and also preventing insufficient thrust from affecting conveying efficiency. This ensures the orderly operation of the conveying assembly 1, provides more precise power support for the smooth conveying of the workpiece 100, and reduces the risk of scratches on the workpiece 100.

[0045] like Figure 2 As shown, the second pipeline 324 is equipped with a second pressure regulating valve 326, which is used to regulate the driving medium pressure in the rod chamber of the input drive cylinder 32. By adjusting the second pressure regulating valve 326, the pressure in the rod chamber can be precisely controlled, thereby changing the retraction force on the piston and controlling the retraction speed and force of the cylinder rod 322. When the slider 34 needs to slowly reset to avoid impact on the workpiece 100, the pressure in the rod chamber can be reduced to decrease the piston retraction force and make the cylinder rod 322 retract smoothly; if the slider 34 needs to reset quickly to improve the equipment cycle efficiency, the pressure can be increased to accelerate the retraction speed of the cylinder rod 322. This pressure regulation capability allows the retraction action of the drive cylinder 32 to better match the conveying rhythm of the workpiece 100, ensuring the stability and controllability of the slider 34 reset process, avoiding the vibration or displacement of the workpiece 100 caused by the sudden stop of the slider 34 due to excessive retraction force, and also preventing insufficient retraction force from slowing down the conveying process, thereby ensuring the continuous operation of the conveying component 1, providing suitable power regulation for the smooth conveying of the workpiece 100, and further reducing the risk of scratches on the workpiece 100.

[0046] In this embodiment, the first pressure regulating valve 325 and the second pressure regulating valve 326 are selected as direct-acting pressure regulating valves or pilot-operated pressure regulating valves. Direct-acting pressure regulating valves have a simple structure and fast response; pilot-operated pressure regulating valves control the main valve through a pilot valve, resulting in high adjustment accuracy and good stability.

[0047] like Figure 3As shown, the conveying assembly 1 also includes a support plate 14, which is fixedly connected to the frame and located inside the conveyor belt 13. The support plate 14 supports the conveyor belt 13. When the conveyor belt 13 carries the workpiece 100, the support plate 14 provides stable support for the conveyor belt 13, preventing it from sinking or deforming due to stress, and ensuring that the conveyor belt 13 always maintains a flat running state. This support function allows the workpiece 100 to be subjected to uniform force during conveying, reducing swaying or deviation caused by the undulation of the conveyor belt 13, and reducing the possibility of friction and scratches between the workpiece 100 and the conveyor belt 13 due to positional changes.

[0048] like Figure 4 As shown, the support plate 14 has two limiting protrusions 141 on the side facing the conveyor belt 13, and the conveyor belt 13 is located between the two limiting protrusions 141. These two limiting protrusions 141 can constrain the lateral movement of the conveyor belt 13, prevent the conveyor belt 13 from deviating due to uneven force or external interference during operation, and ensure that the conveyor belt 13 always runs smoothly on the preset track.

[0049] like Figure 4 As shown, the top of the limiting protrusion 141 is lower than the conveying surface of the conveyor belt 13. While fulfilling its limiting function, it also prevents the limiting protrusion 141 from directly contacting the workpiece 100, thus preventing the workpiece 100 from being scratched or blocked by the protrusion during conveying. When the workpiece 100 is placed on the conveyor belt 13, its bottom contacts the conveying surface of the conveyor belt 13, while the limiting protrusion 141, due to its lower top position, does not create vertical obstruction to the workpiece. This ensures both the stable lateral operation of the conveyor belt 13 and the smooth conveying of the workpiece 100, further reducing the probability of scratches or jamming on the workpiece 100. Combined with the supporting function of the support plate 14 and the lateral constraint function of the limiting protrusion 141, the entire conveying process becomes more stable and reliable.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A conveying device for conveying a workpiece (100) to be processed, characterized in that, The conveying device includes: frame; Multiple conveying components (1) are arranged in parallel along the conveying direction of the workpiece (100) to jointly support and convey the same workpiece (100). Each conveying component (1) includes a driving pulley (11), a driven pulley (12), and a conveyor belt (13) surrounding the driving pulley (11) and the driven pulley (12). The drive assembly (2) includes a drive component (21), a drive shaft (22), and a driven shaft (23). The drive component (21) is fixed to the frame, and its output end is connected to the first end of the drive shaft (22). The second end of the drive shaft (22) is rotatably connected to the frame. A plurality of drive pulleys (11) are connected to the drive shaft (22). Both ends of the driven shaft (23) are rotatably connected to the frame, and a plurality of driven pulleys (12) are connected to the driven shaft (23). Multiple tensioning components (3) correspond one-to-one with multiple conveying components (1). Each tensioning component (3) includes a tensioning wheel (31), a drive cylinder (32), a guide rail (33), and a slider (34). The cylinder barrel (321) of the drive cylinder (32) is fixed to the frame. The cylinder rod (322) of the drive cylinder (32) is connected to the first end of the slider (34). The slider (34) is slidably engaged with the guide rail (33) fixed to the frame. The tensioning wheel (31) is rotatably connected to the second end of the slider (34) and abuts against the corresponding conveyor belt (13).

2. The conveying device according to claim 1, characterized in that, The conveying device further includes a first protective cover (4), which includes a fixed part (41) fixed to the frame and a telescopic part (42). The fixed part (41) covers the outside of the cylinder (321). The first end of the telescopic part (42) is connected to the fixed part (41), and its second end is connected to the slider (34) and moves with the slider (34). The telescopic part (42) covers the outside of the cylinder rod (322).

3. The conveying device according to claim 2, characterized in that, The fixing part (41) is provided with an air inlet (43) that communicates with an external air source. The air inlet (43) is used to introduce dry gas into the first protective cover (4).

4. The conveying device according to claim 1, characterized in that, The conveying device further includes a second protective cover (5), the first end of which is fixed to the guide rail (33), the second end of which is connected to the slider (34) and can move with the slider (34), and the second protective cover (5) covers the mating part of the guide rail (33) and the slider (34).

5. The conveying device according to claim 1, characterized in that, The drive cylinder (32) is provided with a first pipeline (323) and a second pipeline (324). The first pipeline (323) is connected to the rodless chamber of the drive cylinder (32), and the second pipeline (324) is connected to the rod chamber of the drive cylinder (32). The first pipeline (323) and the second pipeline (324) are used to transport the drive medium.

6. The conveying device according to claim 5, characterized in that, The first pipeline (323) is provided with a first pressure regulating valve (325), which is used to regulate the pressure of the driving medium input into the rodless chamber of the drive cylinder (32).

7. The conveying device according to claim 5, characterized in that, The second pipeline (324) is provided with a second pressure regulating valve (326), which is used to regulate the pressure of the driving medium input into the rod chamber of the drive cylinder (32).

8. The conveying device according to any one of claims 1-7, characterized in that, The conveying assembly (1) further includes a support plate (14), which is fixedly connected to the frame and located inside the conveyor belt (13). The support plate (14) is used to support the conveyor belt (13).

9. The conveying device according to claim 8, characterized in that, The support plate (14) has two limiting protrusions (141) on one side facing the conveyor belt (13), and the conveyor belt (13) is located between the two limiting protrusions (141).

10. The conveying device according to claim 9, characterized in that, The top of the limiting protrusion (141) is lower than the conveying surface of the conveyor belt (13).

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