A supplementary tensioning sprocket for a conveyor

Abstract

The utility model relates to an auxiliary tensioning sprocket for conveying equipment, including the tensioning assembly of conveying equipment, and the tensioning assembly includes tensioning sprocket and bearing, and the tensioning sprocket is integrally formed with bearing, and the bearing is arranged in the inside of tensioning sprocket, and the limiting baffle formed at both ends of tensioning sprocket contacts with the end face of bearing, through integrally forming design of tensioning sprocket and bearing, cooperate the limiting baffle of axial both ends setting, need not additional adjustment relative position of bearing and sprocket, simplify assembly process, effectively limit axial displacement of bearing at the same time, prevent the shift when running, guarantee transmission stability, and the flange formed by the edge extension of the axial both ends of the installation cavity constitutes the limiting baffle, and the end face of bearing is abutted, and the integrally formed structure replaces the traditional split type retaining ring, eliminates assembly gap, enhances axial constraint, and simplifies the structure.

Description

Technical Field

[0001] This utility model belongs to the field of auxiliary equipment technology for conveying equipment, and specifically relates to an auxiliary tensioning sprocket for conveying equipment. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] Automated warehouses (AS / RS) offer advantages such as high space utilization, strong inbound and outbound capabilities, and computer-controlled management that facilitates automated management. They have become an indispensable warehousing technology for enterprise logistics and production management, gaining increasing attention and widespread application in industries such as pharmaceuticals, automobile manufacturing, machinery manufacturing, tobacco distribution, apparel, chemicals, printing, and textiles. Some industries, due to the diverse types of materials, require the use of various pallet sizes for storage. For example, in the automotive industry, where parts vary significantly in size, custom-made pallets of different dimensions are often necessary to ensure efficient sorting and retrieval. During the conveyor process in AS / RS, chain tensioning is required to maintain system stability. However, existing chain tensioning wheels use a complex structure with embedded bearings, resulting in redundant design and requiring the purchase of high-precision steel, multiple processing steps, and assembly with bearings and retaining rings, leading to significant time consumption in processing and assembly. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary tensioning sprocket for conveying equipment, which can at least solve one of the above-mentioned technical problems.

[0005] To achieve the above objectives, one or more embodiments of this utility model provide an auxiliary tensioning sprocket for a conveying device, including a tensioning assembly installed on the conveying device. The tensioning assembly includes a tensioning sprocket and a bearing. The tensioning sprocket and the bearing are integrally formed, and the bearing is disposed inside the tensioning sprocket. Limiting baffles for restricting the axial displacement of the bearing are provided on both axial end faces of the tensioning sprocket. The inner ring of the bearing is connected to the drive shaft of the conveying device, and the outer circumferential surface of the tensioning sprocket is used for meshing and transmission with the conveying chain.

[0006] Furthermore, the tensioning sprocket has an internal mounting cavity, and the bearing is fixedly embedded in the mounting cavity. The axial two-end edges of the mounting cavity extend inward to form flanges, which constitute limiting baffles and abut against the axial two-end faces of the bearing.

[0007] Furthermore, the outer circumferential surface of the tensioning sprocket is uniformly provided with multiple teeth along the circumferential direction, and the shape of the teeth is adapted to the shape of the chain links of the conveyor chain.

[0008] Furthermore, the axial length of the tensioning sprocket is greater than the axial length of the bearing, and the limiting baffle is provided to protrude from both axial end faces of the bearing.

[0009] Furthermore, the tensioning sprocket has a through hole at its center, and the inner ring of the bearing is coaxially arranged with the through hole. The through hole is used for the drive shaft to pass through and mate with the inner ring of the bearing.

[0010] Furthermore, the bearing is a deep groove ball bearing, and there is a gap between the inner ring of the deep groove ball bearing and the drive shaft.

[0011] Furthermore, the flange and the tensioning sprocket are integrally formed to avoid the risk of deformation caused by local stress concentration.

[0012] Furthermore, the outer ring of the bearing is interference-fitted with the inner wall of the tensioning sprocket.

[0013] Furthermore, the tooth tip of the tooth is provided with a rounded transition structure to avoid lateral chain deviation caused by sharp corners.

[0014] Furthermore, both axial end faces of the tensioning sprocket are chamfered to prevent surface damage caused by rigid collisions.

[0015] The beneficial effects of one or more of the above technical solutions are as follows: This utility model adopts an integrated design of tension sprocket and bearing, and with the limiting baffles set at both ends of the axial direction, there is no need to adjust the relative position of the bearing and sprocket separately, which simplifies the assembly process. At the same time, it effectively limits the axial displacement of the bearing, prevents it from moving during operation, and ensures transmission stability.

[0016] The flanges formed by the axial extension of the mounting cavity at both ends constitute the limiting baffle, which abuts against the bearing end face. The one-piece molded structure replaces the traditional split retaining ring, eliminates assembly gaps, enhances axial constraint, and simplifies the structure. The uniformly arranged teeth on the outer circumference are adapted to the chain links to achieve precise meshing, converting sliding friction into rolling contact, reducing energy loss, and uniformly distributing the load to reduce single-tooth impact force. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the installation position of the tension sprocket in one or more embodiments of the present invention; Figure 2 This is a three-dimensional structural diagram of the tensioning sprocket in one or more embodiments of the present invention; Figure 3This is a cross-sectional view of the tensioning sprocket in one or more embodiments of the present invention.

[0019] In the diagram, 1 is the tensioning assembly; 2 is the tensioning sprocket; 3 is the support seat; 4 is the limit baffle; 5 is the flange; and 6 is the bearing. Detailed Implementation

[0020] like Figures 1 to 3 As shown, this embodiment provides an auxiliary tensioning sprocket for a conveying device, including a tensioning assembly 1 installed on the conveying device. The tensioning assembly 1 includes a tensioning sprocket 2 and a bearing 6. The tensioning assembly 1 is connected to the frame of the conveying device through a support base 3.

[0021] The tension sprocket 2 and the bearing 6 are integrally formed. The bearing 6 is located inside the tension sprocket 2. Limiting baffles 4 are provided on both axial end faces of the tension sprocket 2 to limit the axial displacement of the bearing 6. The inner ring of the bearing 6 is connected to the drive shaft of the conveying equipment. The outer circumferential surface of the tension sprocket 2 is used to mesh and drive with the conveying chain.

[0022] Specifically, the tension sprocket 2 and the bearing 6 are integrally formed using a mold, with the bearing 6 encased within the internal cavity of the tension sprocket 2. After forming, the limiting baffles 4 formed at both ends of the tension sprocket 2 contact the end faces of the bearing 6 to prevent axial movement of the bearing 6 during operation. During installation, the drive shaft is directly inserted into the inner ring of the bearing 6 for positioning, without the need for additional adjustment of the relative position between the bearing 6 and the sprocket. During operation, the outer circumferential surface of the tension sprocket 2 meshes with the conveyor chain, achieving low-friction rotation through the cooperation between the inner ring of the bearing 6 and the drive shaft.

[0023] The tension sprocket 2 has an internal mounting cavity, and the bearing 6 is fixedly embedded in the mounting cavity. The axial two ends of the mounting cavity extend inward to form flanges 5, which constitute a limiting baffle 4 and abut against the axial two end faces of the bearing 6.

[0024] Specifically, the bearing 6 is embedded into the mounting cavity via an interference fit or press-fit. Both ends of the mounting cavity are machined to form annular flanges 5. The inner diameter of the flanges 5 is smaller than the outer ring diameter of the bearing 6, ensuring that the end face of the bearing 6 is completely covered by the flanges 5 after installation. During assembly, after the bearing 6 is pressed into the mounting cavity, the flanges 5 directly contact the end face of the outer ring of the bearing 6, eliminating the need for additional retaining rings or snap rings. Thus, the axial fixation of the bearing 6 is achieved through the structure of the tension sprocket 2 itself, simplifying the machining process to a one-time molding of the mounting cavity and flanges 5.

[0025] The outer circumferential surface of the tension sprocket 2 is uniformly provided with multiple teeth, the shape of which matches the shape of the chain links of the conveyor chain. During chain transmission, the evenly distributed teeth sequentially form point contacts with each chain link, reducing the impact force borne by a single tooth through equal load distribution. The precise matching of the tooth shape with the chain link shape causes the chain roller to move along the tangent of the tooth profile, converting sliding friction into rolling contact and reducing energy loss during transmission. When the chain enters the meshing area, the tooth tip curved surface guides the roller to smoothly transition to the tooth root, avoiding vibration noise caused by meshing interference.

[0026] The axial length of the tension sprocket 2 is greater than that of the bearing 6, and the limiting baffles 4 protrude from both axial end faces of the bearing 6. By designing the tension sprocket 2 to have an axial length greater than that of the bearing 6 during manufacturing, the limiting baffles 4 extend outwards at both ends after the bearing 6 is installed. When the bearing 6 is pressed into the mounting cavity of the tension sprocket 2, the limiting baffles 4 cover the axial end faces of the bearing 6, forming a bidirectional axial constraint on the bearing 6. This one-piece molded limiting structure eliminates the need for additional mounting hole retaining rings, directly forming mechanical limiting through the extension of the body material, thus simplifying the assembly process.

[0027] The tension sprocket 2 has a through hole at its center. The inner ring of the bearing 6 is coaxial with the through hole, which allows the drive shaft to pass through and mate with the inner ring of the bearing 6. During drive shaft installation, the through hole allows the drive shaft to directly pass through the tension sprocket 2 and form a tight fit with the inner ring of the bearing 6. Because the coaxiality between the through hole and the inner ring of the bearing 6 is guaranteed, the drive shaft can achieve stable rotation without additional positioning. By omitting the retaining ring or snap ring used to fix the bearing 6 in the traditional structure, the assembly steps are simplified to a single shaft-hole mating operation, thus reducing the number of machining steps.

[0028] Bearing 6 is a deep groove ball bearing 6, with a clearance between its inner ring and the drive shaft. The self-aligning characteristic of the deep groove ball bearing 6 allows it to compensate for installation misalignment between the drive shaft and the tension sprocket 2. When there is a slight eccentricity in the drive shaft, the outer ring of bearing 6 rotates with the tension sprocket 2, while the inner ring, through the clearance fit, generates a slight displacement on the drive shaft, automatically adjusting the contact area between the steel balls and the raceway to a state of force balance. This dynamic adjustment process transforms the sliding friction between the drive shaft and the inner ring of bearing 6 into rolling friction of the steel balls, effectively reducing the coefficient of friction.

[0029] The flange 5 and the tension sprocket 2 are integrally formed. During manufacturing, the tension sprocket 2 and the flange 5 are generated simultaneously through a one-time molding process, ensuring that there are no seams or assembly gaps between the flange 5 and the body at both ends of the mounting cavity. Therefore, after the bearing 6 is directly embedded into the mounting cavity, the axial end face of the flange 5 and the end face of the bearing 6 form surface contact, eliminating the need for subsequent processing or assembly of limiting components. Because there is no separate connection interface between the flange 5 and the body, the continuous material distribution results in a more uniform stress distribution when the overall structure bears the chain tension force, avoiding the risk of deformation caused by localized stress concentration.

[0030] The outer ring of bearing 6 is interference-fitted with the inner wall of tension sprocket 2. During assembly, the outer ring of bearing 6 is directly pressed into the mounting cavity of the inner wall of tension sprocket 2 by mechanical pressing, eliminating the need to machine threaded holes or retaining rings for mounting holes on tension sprocket 2. The radial pressure generated by the interference fit ensures tight contact between the outer ring of bearing 6 and the inner wall of tension sprocket 2, eliminating the gap between them and thus preventing axial or circumferential displacement of the outer ring of bearing 6 during operation. This assembly method replaces the traditional split-type fixed structure, omitting processes such as machining threaded holes and installing retaining rings, simplifying the assembly steps of bearing 6 and tension sprocket 2 to a single press-fit operation.

[0031] The tooth tips of the chain teeth feature a rounded transition structure. When the chain meshes with the sprocket, the chain rollers first contact the rounded surface of the tooth tip. This rounded structure disperses the contact stress, which would otherwise be concentrated at the tooth tip edge, across the entire curved surface area, preventing localized scratching of the chain plates by the edges. During engagement, the rounded surface forms a guide ramp, guiding the chain rollers along the curved surface into the bottom of the tooth groove, reducing impact vibrations caused by misalignment. During transmission, the rounded transition structure ensures continuous contact between the chain and the sprocket, preventing lateral chain shifting caused by sharp corners.

[0032] Both axial end faces of the tension sprocket 2 are chamfered. During the assembly of the tension sprocket 2 with the drive shaft, the beveled surface formed by the chamfer guides the alignment of the inner ring of the bearing 6 with the drive shaft, reducing positioning deviations caused by sharp edges. Furthermore, the chamfer structure ensures a smooth transition when the sprocket end face contacts adjacent components, preventing surface damage from rigid collisions. During transportation or operation, the chamfer effectively eliminates the risk of interference between sharp edges and external packaging or handling tools, reducing the probability of component scratches.

[0033] The working principle of this utility model: When the tension sprocket 2 is working, it is positioned by engaging with the transmission shaft of the conveying equipment through the inner ring of the bearing 6. The teeth on the outer circumference of the tension sprocket 2 mesh with the conveying chain, and the movement of the chain drives the tension sprocket 2 to rotate. The outer ring of the bearing 6 is interference-fitted with the inner wall of the tension sprocket 2 and rotates with the body, while the inner ring is fixed on the transmission shaft, achieving low-friction rotation. The integrally formed limiting baffles 4 at both ends of the tension sprocket 2 abut against the end face of the bearing 6 to prevent axial movement of the bearing 6. The tooth shape is adapted to the chain links, and the rounded transition structure at the tooth tip guides the chain rollers to smoothly mesh into the tooth groove, converting sliding friction into rolling contact, reducing energy loss and impact vibration. The evenly distributed tooth load reduces the impact force of a single tooth. The clearance fit between the inner ring of the deep groove ball bearing 6 and the transmission shaft utilizes its self-aligning characteristics to compensate for installation deviations, keeping the steel balls and raceways in force balance, further reducing the coefficient of friction. The overall integrally formed structure ensures transmission stability and reliability.

[0034] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. An auxiliary tensioning sprocket for a conveying device, comprising a tensioning assembly mounted on the conveying device, characterized in that, The tensioning assembly includes a tensioning sprocket and a bearing. The tensioning sprocket and the bearing are integrally formed. The bearing is located inside the tensioning sprocket. Limiting baffles for limiting the axial displacement of the bearing are provided on both axial end faces of the tensioning sprocket. The inner ring of the bearing is connected to the drive shaft of the conveying equipment. The outer circumferential surface of the tensioning sprocket is used for meshing and transmission with the conveying chain.

2. The auxiliary tensioning sprocket for a conveying device according to claim 1, characterized in that, The tensioning sprocket has an internal mounting cavity, and the bearing is fixedly embedded in the mounting cavity. The axial two ends of the mounting cavity extend inward to form flanges, which constitute limiting baffles and abut against the axial two end faces of the bearing.

3. An auxiliary tensioning sprocket for a conveying device according to claim 1, characterized in that... The outer circumferential surface of the tensioning sprocket is uniformly provided with multiple teeth along the circumferential direction, and the shape of the teeth is adapted to the shape of the chain links of the conveyor chain.

4. An auxiliary tensioning sprocket for a conveying device according to claim 1, characterized in that, The axial length of the tensioning sprocket is greater than the axial length of the bearing, and the limiting baffle is provided to protrude from both axial end faces of the bearing.

5. An auxiliary tensioning sprocket for a conveying device according to claim 1, characterized in that, The tensioning sprocket has a through hole at its center, and the inner ring of the bearing is coaxially arranged with the through hole. The through hole is used for the drive shaft to pass through and mate with the inner ring of the bearing.

6. An auxiliary tensioning sprocket for a conveying device according to claim 1, characterized in that, The bearing is a deep groove ball bearing, and there is a gap between the inner ring of the deep groove ball bearing and the drive shaft.

7. An auxiliary tensioning sprocket for a conveying device according to claim 2, characterized in that, The flange and the tensioning sprocket are integrally formed.

8. An auxiliary tensioning sprocket for a conveying device according to claim 1, characterized in that, The outer ring of the bearing is interference-fitted with the inner wall of the tensioning sprocket.

9. An auxiliary tensioning sprocket for a conveying device according to claim 3, characterized in that, The tooth tip of the tooth is provided with a rounded transition structure.

10. An auxiliary tensioning sprocket for a conveying device according to claim 1, characterized in that, Both axial end faces of the tensioning sprocket are chamfered.

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