Economical small-load overhead chain driving head and tail

Abstract

The invention relates to the technical field of automatic production, in particular to an economical small-load overhead chain driving head and tail which comprises two parallel cross beams, and a driving head and a driving tail are detachably assembled at the two ends of each chain transmission adaptive profile respectively. The two driving heads are in synchronous transmission connection through a driving shaft, the two ends of the chain transmission piece are in supporting and guiding fit with the wear-resisting pieces of the driving heads and the wear-resisting pieces of the driving tails correspondingly, and the driving heads and the driving tails are each provided with a chain transmission piece dust protection assembly. Through chain transmission piece dust protection assemblies arranged on the driving head and the driving tail, brush assemblies fixed to the bottoms of a first chain wheel mounting box and a second chain wheel mounting box are utilized, and elastic bristles make elastic contact with the surface of a chain transmission piece, dust and chippings attached to the surface of the chain can be removed in real time; and the dust receiving box clamped at the bottom of the brush seat can collect cleaned impurities, so that dust is prevented from entering a meshing gap between the chain wheel and the chain, and the impurities are prevented from polluting workpieces.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automation production, in particular to an economical small-load overhead chain drive head tail. BACKGROUND

[0002] In the field of electronic component assembly, light industry product sorting and other automation production, overhead chain conveying equipment becomes the core component of light weight production line due to its stable conveying and adaptation to small load scenarios, but the existing drive head tail adapted to 08B carbon steel chain or belt has significant cost and process adaptation defects. The drive head tail generally adopts a complex transmission and support structure, resulting in high manufacturing cost, and requires multi-step calibration of the relative positions of the chain wheel, chain and profile during installation, which is tedious and time-consuming, increasing the user's procurement and installation cost. In addition, the existing structure cannot simultaneously meet the accumulation and dust protection requirements. When the production line needs to temporarily position and cache workpieces, an independent accumulation device needs to be additionally installed, which not only increases the complexity of the equipment, but also occupies more installation space. In a production environment with a lot of dust, the lack of targeted protection structure easily leads to dust adhering to the surface of the chain transmission part, affecting the conveying stability and possibly contaminating electronic components with high cleanliness requirements, which cannot adapt to diversified production processes.

[0003] In addition, the existing 08B carbon steel chain or belt drive head tail also has certain deficiencies in structural stability and durability. The chain wheel mounting box is usually made of multiple pieces of sheet metal spliced together, which is prone to joint gap expansion and screw loosening due to vibration during long-term use, resulting in transmission coaxiality deviation of the driving and driven chain wheels, and further causing chain transmission part jamming and abnormal noise, shortening the service life of the equipment. At the same time, the drive assembly generally adopts an indirect transmission link of "reduction motor, transmission chain wheel, transmission chain and driving shaft", which has multiple transmission links and long chain links, and is prone to transmission chain slipping and wear during operation, which not only reduces the transmission efficiency, but also requires frequent disassembly and maintenance to replace the transmission parts, increasing the user's later maintenance cost. Moreover, the contact parts of the chain transmission part and the support and guide structure lack wear-resistant design, and long-term friction easily leads to wear and deformation of the support parts, which requires the replacement of the whole parts, further increasing the maintenance cost. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an economical small-load overhead chain drive head tail, which solves the problems raised in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an economical small-load top-mounted chain drive head and tail, comprising two parallel crossbeams, both ends of which are fixedly fitted with chain drive adapter profiles, and both ends of each chain drive adapter profile are detachably fitted with a drive head and a drive tail, the two drive heads are synchronously connected by a drive shaft, one of the drive heads has a direct-drive modular drive assembly integrated inside, and both drive tails are equipped with a tension adjustment mechanism with accumulation function inside;

[0006] The drive head includes an integrally formed lightweight and high-strength first sprocket mounting box, in which a drive sprocket is rotatably mounted; the drive tail includes an integrally formed lightweight and high-strength second sprocket mounting box, in which a driven sprocket is rotatably mounted via a driven shaft and bearing.

[0007] The driving sprocket and the driven sprocket are meshed and driven by a small load-adaptive chain drive component. The sprocket seats inside the first sprocket mounting box and the second sprocket mounting box are provided with wear-resistant component mounting slots. Wear-resistant components that are in contact with the surface of the chain drive component are assembled in the wear-resistant component mounting slots. The two ends of the chain drive component form a supporting and guiding fit with the wear-resistant components of the drive head and the drive tail, respectively. Both the drive head and the drive tail are provided with chain drive component dust protection components.

[0008] The small load adaptable chain drive is one of the top-mounted chain and the small-specification single-speed chain. The top-mounted chain is assembled from a metal-based roller chain and a wear-resistant polymer cover plate. The metal-based roller chain is made of 304 stainless steel or carbon steel.

[0009] As a preferred embodiment of the present invention, both the first sprocket mounting box and the second sprocket mounting box are made of high-strength aluminum alloy and are integrally die-cast using a mold.

[0010] As a preferred embodiment of the present invention, the direct-drive modular drive assembly includes a modular flange seat and a reduction drive component. The reduction drive component is fixedly assembled with the first sprocket mounting box of the drive head through the modular flange seat, and the output end of the reduction drive component is directly connected to the drive shaft for transmission.

[0011] As a preferred embodiment of the present invention, the tension adjustment mechanism with accumulation function includes a strip-shaped adjustment groove opened along the driven shaft axis, an adjustment screw that mates with the threaded holes at both ends of the driven shaft, and a tension scale mark engraved on the surface of the second sprocket mounting box; the structural dimensions of the strip-shaped adjustment groove are adapted to the displacement stroke of the driven shaft, and the adjustment screw can realize the workpiece accumulation and positioning during the conveying process of the chain drive component by adjusting the position of the driven shaft; one end of the adjustment screw extends through the adjustment hole of the second sprocket mounting box to the outside of the box body.

[0012] As a preferred embodiment of the present invention, the wear-resistant part is a wear-resistant bushing or a wear-resistant strip, and the wear-resistant bushing or wear-resistant strip is made of POM or nylon.

[0013] As a preferred embodiment of the present invention, the dust protection assembly for the chain drive component includes a brush assembly fixedly mounted on the bottom of the first sprocket mounting box and the second sprocket mounting box. The brush assembly includes a brush seat and elastic bristles mounted on the brush seat. The elastic bristles are in elastic contact with the surface of the chain drive component. The brush assembly is detachably fixed to the bottom of the first sprocket mounting box and the second sprocket mounting box by screws. A dust collection box is engaged with the bottom of the brush seat.

[0014] As a preferred embodiment of the present invention, the top of the chain drive adapter profile is provided with a first chain groove, the width of which is adapted to the top chain bearing portion of the chain drive component.

[0015] In a preferred embodiment of the present invention, the top and bottom of the first sprocket mounting box are respectively detachably fitted with a first upper cover and a first lower cover by screws, and the top and bottom of the second sprocket mounting box are respectively detachably fitted with a second upper cover and a second lower cover by screws. The surfaces of the first upper cover and the second upper cover are each provided with a second chain groove corresponding to and communicating with the first chain groove. The first lower cover and the second lower cover are both fitted over the outside of the brush holder.

[0016] As a preferred embodiment of the present invention, both the first sprocket mounting box and the second sprocket mounting box are fitted with bushings through a transition shaft and bearings. The bushings correspond to the end positions of the chain drive components. The surfaces of the first and second upper covers are also provided with bushing grooves for the bushings to be exposed.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention provides an economical, low-load top-mounted chain drive for both the head and tail:

[0019] 1) This invention uses a high-strength aluminum alloy mold to integrally die-cast the first sprocket mounting box of the drive head and the second sprocket mounting box of the drive tail. Compared with the traditional sheet metal splicing structure, it eliminates the need for assembly and calibration of multiple sheet metal pieces, greatly simplifying the installation process and effectively improving assembly efficiency. At the same time, the aluminum alloy material effectively reduces the weight of the mounting box compared with the traditional sheet metal box, adapting to the needs of lightweight production lines and indirectly reducing equipment handling and installation costs. The direct-drive modular drive assembly integrated inside the drive head directly connects the reduction drive component and the drive shaft through a modular flange seat, eliminating the traditional transmission sprocket and transmission chain, shortening the transmission link, effectively solving the problems of transmission chain slippage and wear, and effectively improving transmission efficiency and reducing maintenance frequency. The tension adjustment mechanism with accumulation function inside the drive tail can accurately adjust the position of the driven shaft to control the tension of the chain drive component through the cooperation of the strip adjustment groove, the adjustment screw and the tension scale mark. It can also realize the workpiece accumulation and positioning by changing the position of the driven shaft, without the need for additional accumulation device, simplifying the equipment structure and saving space.

[0020] 2) This invention also utilizes a chain drive dust protection assembly configured at both the drive head and drive tail. A brush assembly fixed to the bottom of the first and second sprocket mounting boxes removes dust and debris from the chain surface in real time through elastic bristles contacting the chain drive component. A dust collection box at the bottom of the brush holder collects the removed impurities, preventing dust from entering the meshing gap between the sprocket and chain. This protects both the chain drive component and the sprocket, and prevents impurities from contaminating the workpiece, making it suitable for production environments with high cleanliness requirements. The sprocket seat has a wear-resistant component mounting groove, internally fitted with POM or nylon... The wear-resistant parts made of dragon material can significantly reduce the frictional loss between the chain drive components and the supporting guide structure, effectively extending the service life of the wear-resistant parts, reducing the frequency of component replacement, and ensuring effective support for the conveyor chain. The top and bottom of the first sprocket mounting box and the second sprocket mounting box are respectively equipped with a first upper cover and a first lower cover, and a second upper cover and a second lower cover. This not only forms a closed protection for the internal driving sprocket, driven sprocket and bushing, preventing the intrusion of external impurities, but also ensures the smooth operation of the chain drive components and bushings through the second chain groove and bushing groove opened in the first upper cover and the second upper cover, further improving the stability of the conveyor. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is one of the structural schematic diagrams of the present invention;

[0023] Figure 3 This is a partial disassembly diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the drive head of the present invention;

[0025] Figure 5 This is a schematic diagram of the dust protection component structure of the chain drive component of the present invention;

[0026] Figure 6 This is a schematic diagram of the drive tail structure of the present invention;

[0027] Figure 7 This is one of the schematic diagrams of the drive tail structure of the present invention.

[0028] In the diagram: 100, crossbeam; 110, chain drive adapter profile; 111, first chain groove; 200, drive head; 210, first sprocket mounting box; 211, first upper cover; 212, first lower cover; 220, drive sprocket; 300, drive tail; 310, second sprocket mounting box; 311, second upper cover; 312, second lower cover; 320, driven shaft; 330, bearing; 340, driven sprocket; 400, drive shaft; 500, direct-drive modular drive assembly; 510, modular flange seat; 520, reduction drive component; 600, tensioner. Adjustment mechanism; 610, strip adjustment groove; 620, tension scale mark; 630, threaded hole; 640, adjusting screw; 650, adjusting hole; 700, chain drive component; 710, metal-based roller chain; 720, wear-resistant polymer cover plate; 800, wear-resistant component mounting groove; 810, wear-resistant component; 900, transition shaft; 910, bushing; 1000, second chain groove; 1100, bushing groove; 1210, chain drive component dust protection assembly; 1220, brush assembly; 1221, brush holder; 1222, elastic bristles; 1223, dust collection box. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] In the description of this invention, it should be understood that the terms "center", "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 accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "configuration" should be interpreted broadly. For example, they can refer to a fixed connection or configuration, a detachable connection or configuration, or an integral connection or configuration. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Example

[0034] like Figures 1-7 As shown, the present invention proposes an economical small-load top-mounted chain drive head and tail, including two parallel crossbeams 100. Both ends of the two crossbeams 100 are fixedly equipped with chain drive adapter profiles 110. Both ends of each chain drive adapter profile 110 are detachably equipped with a drive head 200 and a drive tail 300, respectively. The two drive heads 200 are synchronously connected through a drive shaft 400. One of the drive heads 200 has a direct-drive modular drive assembly 500 integrated inside. Both drive tails 300 are equipped with a tension adjustment mechanism 600 with accumulation function inside.

[0035] The drive head 200 includes an integrally formed lightweight and high-strength first sprocket mounting box 210, in which a drive sprocket 220 is rotatably mounted; the drive tail 300 includes an integrally formed lightweight and high-strength second sprocket mounting box 310, in which a driven sprocket 340 is rotatably mounted via a driven shaft 320 and a bearing 330.

[0036] A small-load-adaptive chain drive component 700 meshes between the driving sprocket 220 and the driven sprocket 340. The first sprocket mounting box 210 and the second sprocket mounting box 310 both have wear-resistant component mounting grooves 800 inside the sprocket seats. Wear-resistant components 810 that are in contact with the surface of the chain drive component 700 are installed in the wear-resistant component mounting grooves 800. The two ends of the chain drive component 700 form a support and guide engagement with the wear-resistant components 810 of the drive head 200 and the drive tail 300, respectively. Both the drive head 200 and the drive tail 300 are equipped with chain drive component dust protection components 1210.

[0037] Specifically, when the small load top-mounted chain drive head and tail are in use, the direct-drive modular drive assembly 500 inside the drive head 200 outputs power to drive the drive shaft 400 to rotate. The drive shaft 400 synchronously drives the drive sprockets 220 inside the two drive heads 200. The drive sprockets 220 drive the small load adaptable chain drive component 700 to run along the chain drive adaptable profile 110 through meshing, thereby driving the driven sprocket 340 inside the drive tail 300 to rotate. The driven shaft 320, in conjunction with the bearing 330, provides stable rotation support for the driven sprocket 340.

[0038] Multiple wear-resistant components 810 are provided to support and guide the chain drive component 700 in the gap between the profile and the sprocket, preventing the chain drive component 700 from collapsing and avoiding direct impact of the chain drive component 700 on the end of the chain drive adapter profile 110, which would cause abnormal noise. Meanwhile, the chain drive component dust protection components 1210 of the drive head 200 and drive tail 300 block dust intrusion in real time. The tension adjustment mechanism 600 with accumulation function of the two drive tails 300 dynamically adjusts according to the tightness of the chain drive component 700 to ensure transmission stability and realize temporary accumulation of workpieces.

[0039] In this embodiment: the small load adaptable chain drive component 700 is one of the top-mounted chain and the small-specification single-speed chain, wherein the top-mounted chain is assembled from a metal-based roller chain 710 and a wear-resistant polymer cover plate 720, and the metal-based roller chain 710 is made of 304 stainless steel or carbon steel.

[0040] Specifically, when using the small load adaptable chain drive component 700, if the top-mounted chain type is selected, the metal-based roller chain 710 serves as the core load-bearing structure, while the outer wear-resistant polymer cover plate 720 directly contacts the workpiece, reducing friction damage to the workpiece surface. The metal-based roller chain 710 can be made of materials according to requirements. 304 stainless steel is suitable for humid or slightly corrosive environments due to its corrosion resistance, while carbon steel reduces costs while ensuring load-bearing strength and is suitable for dry and non-corrosive environments.

[0041] When a small-size single-speed chain is selected, its uniform speed transmission characteristics ensure accurate workpiece conveying position and meet transmission accuracy requirements. Through the selection of different types and materials, the small-load adaptable chain drive component 700 can achieve stable load bearing, reduce wear, adapt to different environments and ensure transmission accuracy, thus meeting the transmission needs of the drive head and tail.

[0042] In this embodiment: both the first sprocket mounting box 210 and the second sprocket mounting box 310 are made of high-strength aluminum alloy and are integrally die-cast using a mold.

[0043] Specifically, the first sprocket mounting box 210 and the second sprocket mounting box 310 are made of high-strength aluminum alloy through integral die casting. During the installation stage, there is no need to splice multiple plates and fix a large number of screws. The drive sprocket 220, driven sprocket 340 and other components can be directly installed into the box to complete the assembly, which shortens the assembly time and reduces the difficulty of operation. At the same time, the weight of the high-strength aluminum alloy material is only about 1 / 3 of that of sheet metal of the same volume, which makes it easier to carry and install. In addition, the integral die casting structure has no splicing gaps, avoiding the problem of screw loosening caused by vibration in traditional spliced ​​boxes. This ensures that the drive sprocket 220 in the first sprocket mounting box 210 and the driven sprocket 340 in the second sprocket mounting box 310 always maintain coaxiality, reduces the uneven wear of the small load adaptable chain drive component 700, extends the overall service life of the equipment, and ensures transmission stability.

[0044] In this embodiment: the direct-drive modular drive assembly 500 includes a modular flange seat 510 and a reduction drive component 520. The reduction drive component 520 is fixedly assembled with the first sprocket mounting box 210 of the drive head 200 through the modular flange seat 510, and the output end of the reduction drive component 520 is directly connected to the drive shaft 400.

[0045] Specifically, when using the direct-drive modular drive assembly 500, the modular flange seat 510 is first fixed to the inside of the first sprocket mounting box 210 of the drive head 200 with screws. Then, the reduction drive component 520 is assembled and fixed with the modular flange seat 510, so that the output end of the reduction drive component 520 is directly connected to the drive shaft 400 for transmission. This eliminates the intermediate links such as the transmission sprocket and transmission chain in traditional indirect transmission, completely avoiding power loss caused by slippage and wear of intermediate transmission components. After starting, the torque output by the reduction drive component 520 is directly transmitted to the drive shaft 400, causing the drive shaft 400 to rotate at a uniform speed. The drive shaft 400 synchronously drives the drive sprockets 220 in the two drive heads 200, ensuring that the speeds of the two drive sprockets 220 are completely consistent. This allows the small-load adaptable chain drive component 700 to run smoothly along the chain drive adaptable profile 110, avoiding pallet tilting and workpiece offset caused by the difference in transmission speed on both sides, and ensuring accurate and reliable power transmission.

[0046] In this embodiment, the tension adjustment mechanism 600 with accumulation function includes a strip-shaped adjustment groove 610 opened along the axial direction of the driven shaft 320, an adjustment screw 640 that cooperates with the threaded holes 630 at both ends of the driven shaft 320, and a tension scale mark 620 engraved on the surface of the second sprocket mounting box 310; the structural dimensions of the strip-shaped adjustment groove 610 are adapted to the displacement stroke of the driven shaft 320, and the adjustment screw 640 can realize the workpiece accumulation and positioning during the conveying process of the chain drive component 700 by adjusting the position of the driven shaft 320; one end of the adjustment screw 640 extends to the outside of the box body through the adjustment hole 650 of the second sprocket mounting box 310.

[0047] Specifically, when adjusting the tension of the tension adjustment mechanism 600 with accumulation function, the operator rotates the adjustment screw 640. The adjustment screw 640, through its threaded engagement with the threaded holes 630 at both ends of the driven shaft 320, pushes the driven shaft 320 to move along the strip-shaped adjustment groove 610 of the second sprocket mounting box 310. The operator precisely controls the displacement of the driven shaft 320 through the tension scale mark 620 at the bottom of the strip-shaped adjustment groove 610, avoiding over- or under-adjustment that could lead to increased wear of the chain drive component 700. When workpiece accumulation is required, the operator continues to rotate the adjustment screw 640, causing the driven shaft 320 to move along the strip-shaped adjustment groove 610 to the preset accumulation position, changing the running trajectory of the small-load adaptable chain drive component 700, so that the chain drive component 700 drives the workpiece to move slowly or pause briefly, thus achieving workpiece accumulation without the need for an additional independent accumulation device.

[0048] One end of the adjusting screw 640 extends to the outside through the adjusting hole 650 of the second sprocket mounting box 310, allowing the operator to operate directly from the outside of the box without disassembling the drive tail 300, thus achieving the dual functions of tension adjustment and workpiece accumulation.

[0049] In this embodiment: the wear-resistant part 810 is a wear-resistant bushing or wear-resistant strip, and the wear-resistant bushing or wear-resistant strip is made of POM or nylon.

[0050] Specifically, when the small-load top-mounted chain drive head and tail are in use, the small-load adaptable chain drive component 700 circulates between the driving sprocket 220 and the driven sprocket 340. The wear-resistant component 810 installed in the wear-resistant component mounting groove 800 directly contacts the chain drive component 700, avoiding direct friction between the sprocket seat and the chain drive component 700, thus reducing wear on the main body. The wear-resistant component 810 is made of POM or nylon, which has good self-lubricating properties, further reducing frictional resistance with the chain drive component 700 and reducing operating noise. When the wear-resistant component 810 wears out after long-term use, the operator can directly replace the wear-resistant component 810 from the wear-resistant component mounting groove 800 without replacing the entire sprocket seat, greatly reducing maintenance costs and ensuring continuous and stable support and guiding functions.

[0051] In this embodiment: the dust protection component 1210 of the chain drive includes a brush assembly 1220 fixedly assembled at the bottom of the first sprocket mounting box 210 and the second sprocket mounting box 310. The brush assembly 1220 includes a brush seat 1221 and elastic bristles 1222 mounted on the brush seat 1221. The elastic bristles 1222 are in elastic contact with the surface of the chain drive 700. The brush assembly 1220 is detachably fixed at the bottom of the first sprocket mounting box 210 and the second sprocket mounting box 310 by screws. The bottom of the brush seat 1221 is engaged with a dust collection box 1223.

[0052] Specifically, during the operation of the chain drive component 700, the elastic bristles 1222 clean the dust and debris adhering to the surface of the chain drive component 700 in real time, preventing dust from entering the meshing gap between the driving sprocket 220 and the driven sprocket 340 with the chain drive component 700, and preventing transmission jamming or sprocket wear caused by dust jamming. The cleaned dust falls naturally and is collected by the dust collection box 1223 connected to the bottom of the brush holder 1221, preventing dust from scattering and polluting the environment or workpieces. When a large amount of dust accumulates in the dust collection box 1223, the operator can directly remove the dust collection box 1223 from the bottom of the brush holder 1221 and empty it for cleaning without disassembling the brush assembly 1220. If the elastic bristles 1222 are worn, the entire brush assembly 1220 can be removed and replaced by removing the screws, making maintenance convenient and ensuring long-term stable dust protection effect.

[0053] In this embodiment, a first chain groove 111 is provided on the top of the chain drive adapter profile 110, and the width of the first chain groove 111 is adapted to the top chain bearing portion of the chain drive component 700.

[0054] Specifically, when in use, the chain drive adapter profile 110 is fixed at both ends of the two crossbeams 100. The middle part of the small-load adapter chain drive component 700 is embedded inside the chain drive adapter profile 110. The inner wall of the chain drive adapter profile 110 limits the two sides of the chain drive component 700 to prevent the chain drive component 700 from shifting left or right during operation. The first chain groove 111 opened at the top of the chain drive adapter profile 110 has a groove width that precisely matches the top chain-bearing part of the chain drive component 700, so that the bearing part of the chain drive component 700 can be positioned from the first chain groove 111. With both inner and outer surfaces exposed, the pallet can be placed directly on the exposed bearing portion of the chain drive component 700. When the chain drive component 700 moves along the chain drive adapter profile 110 under the drive of the drive sprocket 220, the pallet moves synchronously with the chain drive component 700. The edge of the first chain groove 111 forms an auxiliary limit on the bottom of the pallet to prevent the pallet from shaking or shifting during movement. When the chain drive component 700 is a top-mounted chain type, its wear-resistant polymer cover plate 720 is exposed through the first chain groove 111 and directly contacts the pallet, reducing wear on the bottom of the pallet and ensuring stable and complete workpiece conveying.

[0055] In this embodiment: the top and bottom of the first sprocket mounting box 210 are respectively detachably fitted with a first upper cover 211 and a first lower cover 212 by screws; the top and bottom of the second sprocket mounting box 310 are respectively detachably fitted with a second upper cover 311 and a second lower cover 312 by screws; the surfaces of the first upper cover 211 and the second upper cover 311 are each provided with a second chain groove 1000 corresponding to and communicating with the first chain groove 111; the first lower cover 212 and the second lower cover 312 are both fitted over the outside of the brush holder 1221.

[0056] Specifically, during daily operation, the first upper cover 211 at the top and the first lower cover 212 at the bottom of the first sprocket mounting box 210, as well as the second upper cover 311 at the top and the second lower cover 312 at the bottom of the second sprocket mounting box 310, seal the internal components such as the driving sprocket 220 and the driven sprocket 340 to prevent external dust and debris from entering the box, and at the same time prevent personnel from accidentally touching the rotating parts;

[0057] The second chain groove 1000 opened on the surface of the first upper cover 211 and the second upper cover 311 is connected to the first chain groove 111 of the chain drive adapter profile 110, so as to ensure that the small load adapter chain drive component 700 passes smoothly through the sprocket mounting box and realizes continuous conveying.

[0058] When it is necessary to maintain the internal components of the first sprocket mounting box 210 and the second sprocket mounting box 310, the operator only needs to unscrew the screws that fix the first upper cover 211 and the first lower cover 212 or the second upper cover 311 and the second lower cover 312 to quickly open the cover without disassembling the entire drive head 200 or drive tail 300, which greatly improves maintenance efficiency.

[0059] In this embodiment: the first sprocket mounting box 210 and the second sprocket mounting box 310 are both equipped with bushings 910 through a transition shaft 900 and bearings. The bushings 910 correspond to the end positions of the chain drive component 700. The surfaces of the first upper cover 211 and the second upper cover 311 are also provided with bushing grooves 1100 for the bushings 910 to be exposed.

[0060] Specifically, when the chain drive component 700 moves to the end area of ​​the drive head 200 or drive tail 300, the end of the chain drive component 700 contacts the outer circumferential surface of the bushing 910. The bushing 910 rotates synchronously with the movement of the chain drive component 700 under the support of the transition shaft 900 and the bearing, converting the sliding friction between the chain drive component 700 and the bushing 910 into rolling friction, reducing the wear of the end of the chain drive component 700, and avoiding transmission jamming caused by friction deformation of the end.

[0061] The bushing grooves 1100 on the surfaces of the first upper cover 211 and the second upper cover 311 expose the top of the bushing 910. Operators can observe the rotation status and wear of the bushing 910 during equipment operation. If the bushing 910 is found to be severely worn, the first upper cover 211 or the second upper cover 311 can be quickly opened to replace the bushing 910, ensuring that the chain drive component 700 always maintains a smooth transition and improving the smoothness of conveying.

[0062] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An economical, low-load, top-mounted chain drive head and tail, comprising two parallel crossbeams (100), characterized in that: Both ends of the two crossbeams (100) are fixedly equipped with chain drive adapter profiles (110). Each end of the chain drive adapter profile (110) is detachably equipped with a drive head (200) and a drive tail (300). The two drive heads (200) are synchronously connected through a drive shaft (400). One of the drive heads (200) has a direct-drive modular drive assembly (500) integrated inside. Both drive tails (300) are equipped with a tension adjustment mechanism (600) with accumulation function inside. The drive head (200) includes an integrally formed lightweight and high-strength first sprocket mounting box (210), in which a drive sprocket (220) is rotatably mounted; the drive tail (300) includes an integrally formed lightweight and high-strength second sprocket mounting box (310), in which a driven sprocket (340) is rotatably mounted via a driven shaft (320) and a bearing (330). The drive sprocket (220) and the driven sprocket (340) are meshed and driven by a small load-adaptive chain drive component (700). The first sprocket mounting box (210) and the second sprocket mounting box (310) are both provided with wear-resistant component mounting grooves (800). Wear-resistant components (810) that are in contact with the surface of the chain drive component (700) are assembled in the wear-resistant component mounting grooves (800). The two ends of the chain drive component (700) are respectively supported and guided by the wear-resistant components (810) of the drive head (200) and the drive tail (300). The drive head (200) and the drive tail (300) are both provided with chain drive component dust protection components (1210).

2. The economical small-load top-mounted chain drive head and tail as described in claim 1, characterized in that: The small load adaptable chain drive component (700) is one of the top-mounted chain and the small-specification single-speed chain. The top-mounted chain is assembled from a metal-based roller chain (710) and a wear-resistant polymer cover plate (720). The metal-based roller chain (710) is made of 304 stainless steel or carbon steel.

3. The economical small-load top-mounted chain drive head and tail according to claim 1, characterized in that: Both the first sprocket mounting box (210) and the second sprocket mounting box (310) are made of high-strength aluminum alloy and are integrally die-cast using a mold.

4. The economical small-load top-mounted chain drive head and tail according to claim 1, characterized in that: The direct-drive modular drive assembly (500) includes a modular flange seat (510) and a speed reduction drive (520). The speed reduction drive (520) is fixedly assembled with the first sprocket mounting box (210) of the drive head (200) through the modular flange seat (510), and the output end of the speed reduction drive (520) is directly connected to the drive shaft (400).

5. The economical small-load top-mounted chain drive head and tail according to claim 1, characterized in that: The tension adjustment mechanism (600) with accumulation function includes a strip-shaped adjustment groove (610) opened along the axial direction of the driven shaft (320), an adjustment screw (640) that cooperates with the threaded holes (630) at both ends of the driven shaft (320), and a tension scale mark (620) engraved on the surface of the second sprocket mounting box (310). The structural dimensions of the strip-shaped adjustment groove (610) are adapted to the displacement stroke of the driven shaft (320), and the adjustment screw (640) can realize the workpiece accumulation and positioning during the conveying process of the chain drive component (700) by adjusting the position of the driven shaft (320). One end of the adjustment screw (640) extends to the outside of the box body through the adjustment hole (650) of the second sprocket mounting box (310).

6. The economical small-load top-mounted chain drive head and tail according to claim 1, characterized in that: The wear-resistant part (810) is a wear-resistant bushing or a wear-resistant strip, and the wear-resistant bushing or wear-resistant strip is made of POM or nylon.

7. The economical small-load top-mounted chain drive head and tail according to claim 1, characterized in that: The dust protection assembly (1210) for the chain drive includes a brush assembly (1220) fixedly mounted on the bottom of the first sprocket mounting box (210) and the second sprocket mounting box (310). The brush assembly (1220) includes a brush seat (1221) and elastic bristles (1222) mounted on the brush seat (1221). The elastic bristles (1222) are in elastic contact with the surface of the chain drive (700). The brush assembly (1220) is detachably fixed to the bottom of the first sprocket mounting box (210) and the second sprocket mounting box (310) by screws. A dust collection box (1223) is engaged with the bottom of the brush seat (1221).

8. The economical small-load top-mounted chain drive head and tail according to claim 1, characterized in that: The top of the chain drive adapter profile (110) is provided with a first chain groove (111), and the width of the first chain groove (111) is adapted to the top chain bearing part of the chain drive component (700).

9. The economical small-load top-mounted chain drive head and tail according to claim 1, characterized in that: The top and bottom of the first sprocket mounting box (210) are respectively detachably fitted with a first upper cover (211) and a first lower cover (212) by screws. The top and bottom of the second sprocket mounting box (310) are respectively detachably fitted with a second upper cover (311) and a second lower cover (312) by screws. The surfaces of the first upper cover (211) and the second upper cover (311) are respectively provided with a second chain groove (1000) corresponding to and communicating with the first chain groove (111). The first lower cover (212) and the second lower cover (312) are both fitted onto the outside of the brush holder (1221).

10. An economical small-load top-mounted chain drive head and tail as described in claim 9, characterized in that: The first sprocket mounting box (210) and the second sprocket mounting box (310) are both equipped with bushings (910) through a transition shaft (900) and a bearing. The bushings (910) correspond to the end positions of the chain drive component (700). The surfaces of the first upper cover (211) and the second upper cover (311) are also provided with bushing grooves (1100) for the bushings (910) to be exposed.

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