A chain conveyor mechanism to prevent sprocket tooth skipping.

Abstract

This utility model discloses a chain conveyor mechanism that prevents sprocket tooth skipping, belonging to the technical field of chain conveyors. It includes a frame with a set of driving rollers and several sets of driven rollers installed inside. The driving roller set includes a driving shaft with several driving sprockets mounted on it, and the driving shaft and driving sprockets are fixedly connected. The driven roller set includes a driven shaft with several driven sprockets mounted on it, and the driven shaft and driven sprockets are rotatably connected. The driving sprockets and driven sprockets are connected by a transmission chain. Its key technical point is that since each driven sprocket on the same driven shaft can rotate relative to each other, each driving sprocket will only drive the rotation of its corresponding driven sprocket, without affecting the rotation of other driven sprockets. This effectively prevents interference from deviations in the driving of other driving sprockets to their corresponding driven sprockets, and reduces the likelihood of the transmission chain being stretched due to uneven force, leading to severe wear or tooth skipping.

Description

Technical Field

[0001] This utility model relates to the field of chain conveyor technology, specifically a chain conveyor mechanism that can prevent sprocket teeth from skipping. Background Technology

[0002] A sprocket chain conveyor uses a chain as both the traction and load-bearing element, and is driven by sprockets to transport materials. Its core components include a drive unit (motor + reducer), a sprocket assembly, a ring chain, and load-bearing accessories (such as pallets and chain plates). During operation, the drive unit rotates the drive sprocket, and the sprocket teeth mesh with the chain rollers, converting the circumferential traction force into linear or curvilinear motion of the chain. The load-bearing accessories on the chain move accordingly, completing the material transport. This structure is suitable for heavy-duty, long-distance, and complex layout scenarios, and features stable transmission, high load-bearing capacity, and easy maintenance. It is widely used in industries such as automotive manufacturing, food processing, and logistics warehousing.

[0003] To ensure that each sprocket can work closely together to provide driving force during operation, the relative positions of the key and teeth of each sprocket group must be absolutely aligned. This ensures that the force on each sprocket is equal and the angular displacement is equal. However, in existing technologies, due to the unavoidable machining and assembly tolerances during processing, it is difficult to ensure that the position of each sprocket group is completely consistent in the assembled chain conveyor. When multiple sprocket groups and multiple chains work together to drive, mismatch in the relative positions of the teeth can easily lead to mismatch in the operation between sprocket groups.

[0004] The aforementioned mismatch manifests as follows: During actual operation, the sprocket on the drive shaft applies thrust to the chain pin through its teeth, thereby driving the chain. The driven shaft primarily supports and fixes the chain. When the chain is driven by the drive shaft sprocket, it applies thrust to the driven shaft sprocket teeth through the chain pin, causing the driven shaft and its mounted sprockets to rotate. Based on this principle, when the relative position of the teeth of a certain sprocket on a driven shaft is mismatched with other sprockets, the driven sprocket will actively apply thrust to the other sprockets as it rotates. The expected chain pin thrust contradicts the premise that the driven sprocket rotates under the chain pin thrust, leading to uneven tension distribution in some parts of the chain. The more chains and sprocket assemblies there are, the greater the probability of this happening. Uneven stress on some parts of the chain reduces the chain's service life, and the uneven stress also causes inconsistent chain elongation, resulting in tooth skipping, accelerating wear on the conveyor mechanism and affecting its normal operation. Therefore, to address the above problems, a chain conveyor mechanism that can prevent sprocket tooth skipping is proposed. Utility Model Content

[0005] To address the technical problem in existing chain conveyors where deviations due to machining and assembly tolerances and wear during use make it difficult to ensure that the relative positions of each sprocket group are completely consistent during operation, and where mismatched relative tooth positions can lead to mismatch between sprocket groups when multiple sprocket groups and multiple chains are driven together, thus accelerating wear and causing tooth skipping that affects normal operation, this utility model provides a chain conveyor mechanism that can prevent sprocket tooth skipping.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A chain conveyor mechanism for preventing sprocket tooth skipping includes a frame with a set of driving rollers and several sets of driven rollers installed inside. A motor for driving the driving rollers is mounted on the frame. The driving rollers include a driving shaft with several symmetrically arranged driving sprockets mounted on it, and the driving shaft is fixedly connected to the driving sprockets. The driven rollers include a driven shaft with several symmetrically arranged driven sprockets mounted on it, and the driven shaft is rotatably connected to the driven sprockets. The driving sprockets and driven sprockets are connected by a transmission chain mounted on the outside.

[0008] In one possible implementation, the driven sprocket includes a wheel cylinder on which a wheel body is fixedly connected, and the wheel cylinder is rotatably connected to the driven shaft through a connecting bearing mounted on its inner wall.

[0009] In one possible implementation, two symmetrically arranged connecting bearings are fixedly installed inside the wheel cylinder, and a sealing ring is provided at both ends of the wheel cylinder to prevent foreign objects from entering the connecting bearings.

[0010] In one possible implementation, the driven roller group consists of a main driven part and a secondary driven part. The main driven part and the secondary driven part have the same structure, except that the wheel body size of the main driven part is larger than that of the secondary driven part. The driven roller group that is flush with the driving roller group adopts the main driven part, while the driven roller group in the return section adopts the secondary driven part.

[0011] In one possible implementation, the driven shaft is provided with a plurality of support shaft seats two, and the driven shaft is mounted on the frame through the support shaft seats two. The support shaft seats two include threaded rod seats fixedly connected to the frame, and bearing support seats are fixedly provided on them. The driven shaft is rotatably connected to the bearing support seats.

[0012] In one possible implementation, the drive shaft is provided with several support shaft seats one, and the drive shaft is mounted on the frame through the support shaft seats one. The structure of the support shaft seats one is completely the same as that of the support shaft seats two.

[0013] In one possible implementation, a drive wheel is fixedly connected to the end of the drive shaft, which is connected to the motor sprocket via a chain.

[0014] In one possible implementation, several series shafts are installed between the drive chains, and several rolling balls are fitted on them.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] By setting a connecting bearing to rotatably connect the driven sprocket to the driven shaft, the traditional installation method of fixing the driven sprocket to the driven shaft is replaced. Based on the above scheme, the driven sprocket can support and tension the transmission chain, enabling it to operate normally. Since each driven sprocket on the same driven shaft can rotate relative to each other, each driving sprocket will only drive the rotation of its corresponding driven sprocket, without affecting the rotation of other driven sprockets. This effectively prevents the driving of other driving sprockets to their corresponding driven sprockets due to deviation, facilitates the coordinated work between multiple sets of chain sprockets, and reduces the likelihood of some transmission chains being stretched due to uneven force, resulting in severe wear or skipped teeth.

[0017] Furthermore, since the driven roller is composed of a main driven part and a secondary driven part, and the wheel body size of the main driven part is larger than that of the secondary driven part, the above solution can use the main driven part in the position where stable operation is required to provide stable support, and use the secondary driven part in the return part to reduce space occupation. This can effectively reduce the height of the whole machine and reduce the drop distance at the discharge port.

[0018] In addition, since the driven sprocket is rotatably connected to the driven shaft, and the driven shaft is rotatably connected to the frame through the second support shaft seat, this scheme can effectively reduce the wear of the bearing structure during use by setting two sets of bearing structures to work together. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a front view of the overall structure of this utility model;

[0021] Figure 2 This is a top view of the overall structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the driven roller assembly structure of this utility model;

[0023] Figure 4 for Figure 3A magnified view of point A in the middle.

[0024] In the diagram: 1. Frame; 2. Driven roller assembly; 21. Driven shaft; 22. Driven sprocket; 23. Support shaft seat one; 24. Drive wheel; 3. Driven roller assembly; 31. Driven shaft; 32. Driven sprocket; 321. Wheel cylinder; 322. Wheel body; 323. Connecting bearing; 324. Sealing ring; 33. Support shaft seat two; 331. Threaded rod seat; 332. Bearing support seat; 301. Driven and driven parts; 302. Secondary driven parts; 4. Transmission chain; 5. Ball bearings; 51. Connecting shaft. Detailed Implementation

[0025] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0026] like Figure 1 - Figure 3 As shown, this embodiment provides a chain conveying mechanism to prevent sprocket tooth skipping, including a frame 1, which houses a set of driving roller groups 2 and several sets of driven roller groups 3. A motor for driving the driving roller groups 2 to rotate is mounted on the frame 1. The driving roller group 2 includes a driving shaft 21 on which several symmetrically arranged driving sprockets 22 are sleeved, and the driving shaft 21 is fixedly connected to the driving sprockets 22. The driven roller group 3 includes a driven shaft 31 on which several symmetrically arranged driven sprockets 32 are sleeved, and the driven shaft 31 is rotatably connected to the driven sprockets 32. The driving sprockets 22 and the driven sprockets 32 are connected by a transmission chain 4 sleeved on the outside.

[0027] Based on the above scheme, since each driven sprocket 32 ​​on the same driven shaft 31 can rotate relative to each other, each driving sprocket 22 will only drive the rotation of its corresponding driven sprocket 32, without affecting the rotation of other driven sprockets 32. This can effectively prevent the driving of other driving sprockets 22 to their corresponding driven sprockets 32 due to deviation, facilitate the coordinated work between multiple sets of chain sprockets, and prevent some transmission chains 4 from being stretched due to uneven force, resulting in severe wear or skipped teeth.

[0028] Among them, such as Figure 4 As shown, the driven sprocket 32 ​​includes a wheel cylinder 321, on which a wheel body 322 is fixedly connected. The wheel cylinder 321 is rotatably connected to the driven shaft 31 through a connecting bearing 323 installed on its inner wall. The above structural scheme can rotatably connect the wheel cylinder 321 and the driven shaft 31 through the connecting bearing 323, thereby realizing the rotatable connection between the driven sprocket 32 ​​as a whole and the driven shaft 31, providing the necessary structural foundation for adjacent driven sprockets 32 to evenly distribute the load through relative rotation during operation.

[0029] Furthermore, two symmetrically arranged connecting bearings 323 are fixedly installed inside the wheel cylinder 321. The arrangement of the two sets of connecting bearings 323 can extend the service life of the driven sprocket 32 ​​as a whole, and can provide more stable support for the wheel cylinder 321, preventing the driven sprocket 32 ​​from deflecting during operation and affecting its transmission effect. In addition, a sealing ring 324 is provided at both ends of the wheel cylinder 321 to prevent foreign objects from entering the connecting bearing 323. The sealing ring 324 can block the outer end face of the connecting bearing 323, preventing foreign objects from entering the connecting bearing 323 during the conveying process and causing it to jam.

[0030] Specifically, to reduce the overall height of the machine, the driven roller group 3 can be differentiated according to its function, such as... Figure 1 As shown, the driven roller group 3 is divided into a main driven part 301 and a secondary driven part 302. The main driven part 301 and the secondary driven part 302 have the same structure, the difference being that the wheel body 322 of the main driven part 301 is larger than the wheel body 322 of the secondary driven part 302. The driven roller group 3, which is flush with the driving roller group 2, uses the main driven part 301, while the driven roller group 3 in the return section uses the secondary driven part 302. The above scheme can achieve the use of the main driven part 301 in the position where stable operation is required to provide stable support, and the use of the secondary driven part 302 in the return section to reduce space occupation. This can effectively reduce the height of the whole machine, reduce the drop distance of the material at the discharge port, and reduce the overall cost of the equipment.

[0031] like Figure 2 - Figure 4 As shown, the driven shaft 31 is provided with several support shaft seats 33. The driven shaft 31 is mounted on the frame 1 through the support shaft seats 33. The support shaft seat 33 includes a threaded rod seat 331 fixedly connected to the frame 1, on which a bearing support seat 332 is fixedly provided. The driven shaft 31 is rotatably connected to the bearing support seat 332. Since the driven sprocket 32 ​​is rotatably connected to the driven shaft 31, and the driven shaft 31 is rotatably connected to the frame 1 through the support shaft seats 33, this scheme can effectively reduce the wear of the bearing structure during use by setting two sets of bearing structures to work together.

[0032] Meanwhile, the drive shaft 21 is provided with several support shaft seats 23. The drive shaft 21 is mounted on the frame 1 through the support shaft seats 23. The structure of the support shaft seats 23 is completely the same as that of the support shaft seats 33. The above structure can complete the fixed installation of the drive shaft 21 without affecting its free rotation. As a complement, a drive wheel 24 is fixedly connected to the end of the drive shaft 21. It is connected to the motor sprocket through a chain. In use, the motor can drive the drive shaft 21 to rotate through the drive wheel 24, which in turn drives the drive sprocket 22 fixedly mounted on it to rotate. In this way, the drive chain 4 drives the corresponding driven sprocket 32 ​​to rotate, so as to realize the normal operation of the entire chain conveyor.

[0033] like Figure 2 As shown, several series shafts 51 are installed between the transmission chain 4, and several rolling balls 5 are sleeved on them. The above structure can form a platform between the transmission chain 4 through the cooperation of the series shafts 51 and the balls 5. The grooves formed between the balls 5 can hold the materials that fit with them to complete the conveying work, such as fruits and vegetables.

[0034] The working principle and usage process of this utility model:

[0035] The motor can drive the drive shaft 21 to rotate through the drive wheel 24, which in turn drives the drive sprocket 22 fixed on it to rotate. This drives the corresponding driven sprocket 32 ​​to rotate through the transmission chain 4, so as to realize the normal operation of the entire chain conveyor. The connecting shaft 51 and the ball bearings 5 ​​cooperate to form a platform between the transmission chain 4. The groove formed between the ball bearings 5 ​​can hold the material that fits to it to complete the conveying work, such as fruits and vegetables.

[0036] During the operation of the conveyor, since each driven sprocket 32 ​​on the same driven shaft 31 can rotate relative to each other, each driving sprocket 22 will only drive the rotation of its corresponding driven sprocket 32, without affecting the rotation of other driven sprockets 32. This effectively prevents the driving of other driving sprockets 22 to their corresponding driven sprockets 32 due to deviation, facilitates the coordinated work between multiple sets of chain sprockets, and reduces the likelihood of some transmission chains 4 being stretched due to uneven force, resulting in severe wear or skipped teeth.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A chain conveying mechanism for preventing sprocket tooth skipping, characterized in that, include: The frame (1) has a set of active rollers (2) and several sets of driven rollers (3) installed inside it, and a motor for driving the active rollers (2) to rotate is installed on the frame (1); The active roller assembly (2) includes an active shaft (21) on which a plurality of symmetrically arranged active sprockets (22) are mounted, and the active shaft (21) and the active sprockets (22) are fixedly connected. The driven roller group (3) includes a driven shaft (31) on which a plurality of symmetrically arranged driven sprockets (32) are sleeved, and the driven shaft (31) and the driven sprockets (32) are rotatably connected. The driving sprocket (22) and the driven sprocket (32) are connected by a transmission chain (4) sleeved on the outside.

2. The chain conveying mechanism for preventing sprocket tooth skipping according to claim 1, characterized in that: The driven sprocket (32) includes a wheel cylinder (321) on which a wheel body (322) is fixedly connected. The wheel cylinder (321) is rotatably connected to the driven shaft (31) through a connecting bearing (323) installed on the inner wall.

3. A chain conveyor mechanism for preventing sprocket tooth skipping according to claim 2, characterized in that: Two symmetrically arranged connecting bearings (323) are fixedly installed inside the wheel cylinder (321), and a closing ring (324) is provided at both ends of the wheel cylinder (321) to prevent foreign objects from entering the connecting bearings (323).

4. A chain conveyor mechanism for preventing sprocket tooth skipping according to claim 2, characterized in that: The driven roller group (3) is divided into a main driven part (301) and a secondary driven part (302). The main driven part (301) and the secondary driven part (302) have the same structure. The difference is that the wheel body (322) of the main driven part (301) is larger than the wheel body (322) of the secondary driven part (302). Among them, the driven roller group (3) which is flush with the active roller group (2) adopts the main driven part (301), and the driven roller group (3) in the return section adopts the auxiliary driven part (302).

5. A chain conveyor mechanism for preventing sprocket tooth skipping according to claim 1, characterized in that: The driven shaft (31) is provided with a plurality of support shaft seats (33). The driven shaft (31) is mounted on the frame (1) through the support shaft seats (33). The support shaft seats (33) include a threaded rod seat (331) fixedly connected to the frame (1), and a bearing support seat (332) is fixedly provided on it. The driven shaft (31) is rotatably connected to the bearing support seat (332).

6. A chain conveyor mechanism for preventing sprocket tooth skipping according to claim 5, characterized in that: The drive shaft (21) is provided with several support shaft seats (23). The drive shaft (21) is mounted on the frame (1) through the support shaft seats (23). The structure of the support shaft seats (23) is completely consistent with that of the support shaft seats (33).

7. A chain conveyor mechanism for preventing sprocket tooth skipping according to claim 1, characterized in that: The drive shaft (21) is fixedly connected to a drive wheel (24) at its end, which is connected to the motor sprocket via a chain.

8. A chain conveyor mechanism for preventing sprocket tooth skipping according to claim 1, characterized in that: Several series shafts (51) are installed between the transmission chains (4), and several rolling balls (5) are fitted on them.

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