Top-mounted chain drive assembly

Abstract

This utility model belongs to the technical field of tool devices for top-mounted chains, and particularly relates to a top-mounted chain drive assembly, including a hollow mounting base, a wheel axle, and a fine-tuning structure. The hollow mounting base has first hollow slots on both sides along the length of the top-mounted chain. The wheel axle is coaxially fitted with a sprocket, and its end has a plane that slides with the top and bottom walls of the first hollow slots. The adjusting structure includes a transmission rod and a threaded rod corresponding to the first hollow slots. The wheel axle has a first threaded hole radially. This application processes the arc surface at the end of the wheel axle into a flat surface, thereby replacing rolling friction with sliding friction. This increases the contact area between the end of the wheel axle and the first hollow slot, increasing the frictional force that the wheel axle needs to overcome during sliding, which helps reduce relative movement between the chain and the first hollow slot due to vibration during operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of tool devices with top-mounted chains, and particularly relates to top-mounted chain drive components. Background Technology

[0002] Top-mounted chains are mechanical transmission devices used in overhead conveyor systems, widely applied in automated production lines, logistics sorting, painting workshops, and other scenarios. In existing technologies, to maintain appropriate chain tension, the axle that rotates with the sprockets is movably connected to the assembly. Tension is adjusted by regulating the distance between the centers of the relative sprockets. However, in chain conveyor applications, the axle is prone to relative movement with the hollow assembly due to vibrations during operation, leading to chain skipping or derailment. Utility Model Content

[0003] The purpose of this invention is to provide a top-mounted chain drive assembly, which aims to solve the technical problems in the prior art.

[0004] To achieve the above objectives, the top-mounted chain drive assembly provided in this utility model embodiment includes a hollow mounting base, a wheel axle, and a fine-tuning structure. The hollow mounting base has first hollow slots on both sides along the length of the top-mounted chain. The wheel axle is coaxially fitted with a sprocket and has a plane at its end that slides with the top and bottom walls of the first hollow slots. The adjusting structure includes a transmission rod and a threaded rod corresponding to the first hollow slot. The transmission rod rotates with the side of the hollow mounting base, has an internal hexagonal groove at one end, and is connected to the threaded rod at the other end. The side of the hollow mounting base has a through hole communicating with the first hollow slot. The wheel axle has a first threaded hole radially. The threaded rod passes through the through hole at its end away from the transmission rod, and its end is threaded into the first threaded hole.

[0005] Optionally, the hollow mounting base includes a drive base plate, a pair of drive side plates, a pair of drive end plates, and a drive top plate. The pair of drive side plates are respectively disposed on the side of the drive base plate. The first hollow groove and the through hole are respectively opened on the drive side plates. The pair of drive end plates are respectively disposed on the end of the drive base plate and together with the pair of drive side plates form a cavity for mounting the sprocket. The drive top plate is disposed on the top of the cavity.

[0006] Optionally, a rotating groove is provided on the drive side plate, the rotating groove is connected to the first hollow groove through the through hole, and the transmission rod is rotatably engaged with the rotating groove.

[0007] Optionally, the drive side plate is recessed inwardly, and the rotating groove is a semi-circular arc groove formed in the recess.

[0008] Optionally, it also includes a locking element, which is disposed on the drive side plate and is capable of continuously providing a fixed locking force to the threaded rod.

[0009] Optionally, the locking component is a flat-head screw, and the drive side plate has a second threaded hole. The second threaded hole communicates with the through hole and their axes are perpendicular to each other. The flat-head screw is threadedly engaged with the second threaded hole, and its inner end can extend into or out of the through hole, thereby squeezing or releasing the threaded rod.

[0010] Optionally, the drive side plate has a second hollowed-out groove along the height direction of the top chain, and the end of the second hollowed-out groove is connected to and perpendicular to the end of the first hollowed-out groove.

[0011] Optionally, the drive base plate has an insertion hole for the top chain to pass through, the top of the drive end plate has an exit notch for the top chain to pass through, and the bottom side has an exit hole for the top chain to pass through. The drive top plate has an clearance notch for preventing the top chain from passing through, and the opening end of the exit notch communicates with the opening end of the clearance notch.

[0012] Optionally, it may also include wear-resistant blocks stacked on the bottom wall of the through-hole.

[0013] Optionally, it also includes a roller, which is rotatably mounted on the drive top plate and located at the end of the clearance notch away from the through notch.

[0014] The above-mentioned technical solutions of one or more of the top-mounted chain drive assembly provided in this utility model embodiment have at least one of the following technical effects: using a hexagonal wrench to drive the transmission rod to rotate, thereby driving the threaded rod to engage with the first threaded hole, thereby driving the wheel axle to slide along the length direction of the first hollow groove. During the sliding process, the plane on the side of the wheel axle slides and rubs against the bottom and top walls of the first hollow groove. Then, by adjusting the relative position of the sprocket on the hollow mounting base, the tension of the top-mounted chain can be adjusted. Compared with the prior art, this application processes the arc surface at the end of the wheel axle into a plane, thereby replacing rolling friction with sliding friction, increasing the contact area between the end of the wheel axle and the first hollow groove, thereby increasing the friction force that the wheel axle needs to overcome during the sliding process. This is beneficial to reduce the situation where the chain and the first hollow groove move relative to each other due to vibration during the working process. On the other hand, during the assembly process, before the threaded rod engages with the first threaded hole, the plane on the side of the wheel axle is used to pre-fix the wheel axle, thereby facilitating the assembly of the chain and the sprocket. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the top-mounted chain drive assembly provided in an embodiment of this utility model.

[0017] Figure 2 for Figure 1 A schematic diagram of the longitudinal section of the drive side plate.

[0018] Figure 3 An exploded view of the top-mounted chain drive assembly provided in an embodiment of this utility model.

[0019] The following are the labeling elements in the figure:

[0020] 1—Hollow assembly base; 11—Drive base plate; 111—Through hole

[0021] 12—Drive side plate; 121—First hollowed-out groove; 122—Through hole

[0022] 123—Rotating groove; 124—Groove; 125—Second threaded hole

[0023] 126—Second hollow groove; 13—Drive end plate; 131—Through-out notch

[0024] 132—Penetrating hole; 133—Wear-resistant block; 14—Drive top plate

[0025] 141—Clearance gap; 142—Roller 2—Axle

[0026] 21—Sprocket 22—Flat plane 23—First threaded hole

[0027] 3—Fine-tuning structure; 31—Transmission rod; 311—Internal hexagonal groove

[0028] 32—Threaded rod 4—Locking element. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, 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.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0033] In one embodiment of this utility model, such as Figures 1-3As shown, a top-mounted chain drive assembly is provided, including a hollow mounting base 1, a wheel axle 2, and a fine-tuning structure 3. The hollow mounting base 1 has first hollowed-out grooves 121 on both sides along the length of the top-mounted chain. The wheel axle 2 is coaxially fitted with a sprocket 21, and its end has a plane 22 that slides with the top and bottom walls of the first hollowed-out grooves 121. The adjusting structure includes a transmission rod 31 and a threaded rod 32 corresponding to the first hollowed-out grooves 121. The transmission rod 31 rotates with the side of the hollow mounting base 1, has an internal hexagonal groove 311 at one end, and is connected to the threaded rod 32 at the other end. The side of the hollow mounting base 1 has a through hole 122 communicating with the first hollowed-out grooves 121. The wheel axle 2 has a first threaded hole 23 radially. The threaded rod 32 passes through the through hole 122 at the end away from the transmission rod 31, and its end is threaded into the first threaded hole 23. Using a hex wrench to drive the transmission rod 31 to rotate, the threaded rod 32 engages with the first threaded hole 23, thereby driving the axle 2 to slide along the length of the first hollow groove 121. During the sliding process, the plane 22 on the side of the axle 2 slides and rubs against the bottom and top walls of the first hollow groove 121. By adjusting the relative position of the sprocket 21 on the hollow mounting base 1, the tension of the top-mounted chain can be adjusted. In this application, the arc surface at the end of the axle 2 is machined into a plane 22, thereby replacing rolling friction with sliding friction. This increases the contact area between the end of the axle 2 and the first hollow groove 121, thereby increasing the friction force that the axle 2 needs to overcome during the sliding process. This helps to reduce the relative movement between the chain and the first hollow groove 121 caused by vibration during operation. On the other hand, during the assembly process, before the threaded rod 32 engages with the first threaded hole 23, the plane 22 on the side of the axle 2 is used to pre-fix the axle 2, thereby facilitating the assembly of the chain and the sprocket 21. Specifically, when the drive assembly provided in this embodiment is used on a chain machine, it needs to be equipped with four sets of hollow assembly seats 1 with sprockets 21 of the same structure. The four hollow assemblies are respectively set at the four corners of the chain machine. The chains on both sides of the chain machine are fixed by two drive assemblies, and a motor with a drive sprocket 21 on the main shaft is used to drive the chain to run.

[0034] In one embodiment of this utility model, such as Figure 3As shown, the hollow mounting base 1 includes a drive base plate 11, a pair of drive side plates 12, a pair of drive end plates 13, and a drive top plate 14. The pair of drive side plates are respectively disposed on the sides of the drive base plate 11. The first hollow groove 121 and the through hole 122 are respectively formed on the drive side plates 12. The pair of drive end plates are respectively disposed on the ends of the drive base plate 11 and together with the pair of drive side plates, form a cavity for mounting the sprocket 21. The drive top plate 14 is disposed on the top of the cavity. Specifically, the pair of drive side plates 12 and the pair of drive end plates 13 are respectively fixedly connected to the drive base plate 11 by screws to form a cavity for mounting the sprocket 21, and the drive top plate 14 is fixed to the top of the cavity by screws.

[0035] In one embodiment of this utility model, such as Figure 3 As shown, the drive side plate 12 has a rotating groove 123, which communicates with the first hollowed-out groove 121 through the through hole 122. The transmission rod 31 is rotatably engaged with the rotating groove 123. The rotating groove 123 houses the transmission rod 31 and provides support. Furthermore, the drive side plate 12 has scale lines engraved on the side of the first hollowed-out groove 121. These scale lines provide feedback on the sliding change of the wheel axle 2, reducing the possibility of deviations in the movement of the wheel axles 2 at both ends.

[0036] In one embodiment of this utility model, such as Figures 1-2 As shown, the drive side plate 12 has an inwardly recessed groove 124, and the rotating groove 123 is a semi-circular arc groove formed within the groove 124. Specifically, the semi-circular arc groove reduces the contact area with the transmission rod 31, thereby reducing friction during rotation and making it easier for the user to tighten. The groove 124 is designed to allow the user to add lubricating oil to the side surface of the transmission rod 31, further reducing friction.

[0037] In one embodiment of this utility model, such as Figures 1-2 As shown, it also includes a locking member 4, which is disposed on the drive side plate 12 and can continuously provide a fixed locking force for the threaded rod 32. Specifically, the part of the threaded rod 32 that mates with the through hole 122 is a smooth circumferential surface, and the part exposed in the first hollow groove 121 is provided with threads.

[0038] In one embodiment of this utility model, such as Figures 1-2As shown, the locking member 4 is a flat-head screw, and the drive side plate 12 has a second threaded hole 125. The second threaded hole 125 communicates with the through hole 122 and their axes are perpendicular to each other. The flat-head screw is threaded into the second threaded hole 125, and its inner end can extend into or out of the through hole 122, thereby squeezing or releasing the threaded rod 32. Specifically, by using the squeezing action of the locking member 4 on the threaded rod 32, the situation where the transmission rod 31 slides unintentionally relative to the semi-circular groove in the axial direction, thereby driving the wheel axle 2 to slide, is reduced, which helps to improve the stability of the wheel axle 2.

[0039] In one embodiment of this utility model, such as Figures 1-3 As shown, the drive side plate 12 has a second hollowed-out groove 126 along the height direction of the top chain. The second hollowed-out groove 126 communicates with the end of the first hollowed-out groove 121 and is perpendicular to each other. Specifically, the second hollowed-out groove 126 has an open structure at one end near the drive top plate 14, so that when disassembling and assembling the wheel axle 2, only the drive top plate 14 needs to be disassembled, which is convenient for operation.

[0040] In one embodiment of this utility model, such as Figure 3 As shown, the drive base plate 11 has an insertion hole 111 for the top chain to pass through, the top of the drive end plate 13 has an exit notch 131 for the top chain to pass through, and the bottom side has an exit hole 132 for the top chain to pass through. The drive top plate 14 has an clearance notch 141 for preventing the top chain from passing through, and the opening end of the exit notch 131 communicates with the opening end of the clearance notch 141.

[0041] In one embodiment of this utility model, such as Figure 3 As shown, it also includes a wear-resistant block 133, which is stacked on the bottom wall of the through-hole 131. Specifically, the wear-resistant block 133 is detachably fixed to the bottom wall of the through-hole 131 by screws, and the service life of this embodiment is improved by replacing the wear-resistant block 133.

[0042] In one embodiment of this utility model, such as Figures 1-3 As shown, it also includes a roller 142, which is rotatably mounted on the drive top plate 14 and located at the end of the clearance notch 141 away from the through notch 131. The roller 142 provides a conveying transition between material contact with the chain.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An overhead chain drive assembly characterized by: The device includes a hollow mounting base, a wheel axle, and a fine-tuning structure. The hollow mounting base has first hollow slots on both sides along the length of the top-mounted chain. The wheel axle is coaxially fitted with a sprocket and has a plane at its end that slides with the top and bottom walls of the first hollow slots. The fine-tuning structure includes a transmission rod and a threaded rod corresponding to the first hollow slot. The transmission rod rotates with the side of the hollow mounting base, has an internal hexagonal groove at one end, and is connected to the threaded rod at the other end. The side of the hollow mounting base has a through hole communicating with the first hollow slot. The wheel axle has a first threaded hole radially. The threaded rod passes through the through hole at its end furthest from the transmission rod, and its end is threaded into the first threaded hole.

2. The overhead chain drive assembly of claim 1, wherein: The hollow mounting base includes a drive base plate, a pair of drive side plates, a pair of drive end plates, and a drive top plate. The pair of drive side plates are respectively disposed on the side of the drive base plate. The first hollow groove and the through hole are respectively opened on the drive side plates. The pair of drive end plates are respectively disposed on the end of the drive base plate and together with the pair of drive side plates form a cavity for mounting the sprocket. The drive top plate is disposed on the top of the cavity.

3. The overhead chain drive assembly of claim 2, wherein: The drive side plate has a rotating groove, which communicates with the first hollowed-out groove through the through hole, and the transmission rod rotates in conjunction with the rotating groove.

4. The overhead chain drive assembly of claim 3, wherein: The drive side plate has an inwardly recessed groove, and the rotating groove is a semi-circular arc groove formed in the groove.

5. The overhead chain drive assembly of claim 2, wherein: It also includes a locking element, which is disposed on the drive side plate and can continuously provide a fixed locking force to the threaded rod.

6. The overhead chain drive assembly of claim 5, wherein: The locking component is a flat-head screw. The drive side plate has a second threaded hole. The second threaded hole communicates with the through hole and their axes are perpendicular to each other. The flat-head screw is threaded into the second threaded hole, and its inner end can extend into or out of the through hole, thereby squeezing or releasing the threaded rod.

7. The overhead chain drive assembly of claim 2, wherein: The drive side plate has a second hollowed-out groove along the height direction of the top chain. The end of the second hollowed-out groove is connected to the end of the first hollowed-out groove and is perpendicular to each other.

8. The top-mounted chain drive assembly according to claim 2, characterized in that: The drive base plate has an insertion hole for the top chain to pass through, the top of the drive end plate has an exit notch for the top chain to pass through, and the bottom side has an exit hole for the top chain to pass through. The drive top plate has an clearance notch for preventing the top chain from going into the air, and the opening end of the exit notch communicates with the opening end of the clearance notch.

9. The top-mounted chain drive assembly according to claim 8, characterized in that: It also includes wear-resistant blocks, which are stacked on the bottom wall of the through-hole.

10. The top-mounted chain drive assembly according to claim 8, characterized in that: It also includes a roller, which is rotatably mounted on the drive top plate and located at the end of the clearance gap away from the through gap.

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