Economical small load single speed chain drive head tail

Abstract

The utility model relates to the technical field of automation production, especially a small load single speed chain drive head and tail of economic type, including two roof beams, both ends of two roof beams all are fixedly installed with speed chain section bar, and the both ends of every speed chain section bar are installed with drive head and drive tail respectively, and the drive head between two drive heads is connected through driving axle transmission, and the inside of one drive head is installed with drive mechanism, and the inside of two drive tails all is installed with tensioning adjusting mechanism, the first sprocket mounting box of drive head is provided with the front chain support block and the front chain guide block, and the rear chain support block and the rear chain guide block in the second sprocket mounting box of drive tail are mutually matched, can effectively support the gap of speed chain between the support section bar and sprocket, prevent the chain collapse when the tray passes, can guide the chain simultaneously, avoid the abnormal sound of direct impact section bar end corner, can effectively prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of automated production technology, specifically to an economical, low-load, single-speed chain drive head and tail. Background Technology

[0002] In the field of automated production, single-speed chain conveyors are widely used due to their stable conveying characteristics. Among them, the 12BS single-speed chain drive head and tail can bear a large load of 2000kg, but existing products have obvious defects:

[0003] 1) Existing 12BS single-speed chain drive heads and tails are generally extremely expensive, and their use is limited by the environment and the installation process is complicated. For users whose load requirements are below 500kg, choosing such a large load drive head and tail is "using a sledgehammer to crack a nut", resulting in a waste of costs.

[0004] 2) Due to its wide range of applications and large user base, the 08BS single-speed chain has already been maturely developed for both high-load "big head and small tail" drivers and low-load "small head and small tail" drivers. However, the 12BS single-speed chain has a relatively small user base, and the driver head and tail for low-load scenarios have long been lacking, which cannot meet the needs of some users who have low-load transmission requirements for the 12BS single-speed chain. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an economical, low-load, single-speed chain drive head and tail, solving the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an economical small-load single-speed chain drive head and tail, comprising two crossbeams, with a double-speed chain profile fixedly installed at both ends of the two crossbeams. Each double-speed chain profile has a drive head and a drive tail installed at both ends. The two drive heads are connected by a drive shaft. A drive mechanism is installed inside one of the drive heads, and a tension adjustment mechanism is installed inside each of the two drive tails. The drive head includes a first sprocket mounting box, in which a drive sprocket is installed. A front chain support block and a front chain guide block are respectively provided at the top and bottom of one side of the drive sprocket. The guide blocks are all fixedly installed inside the first sprocket mounting box. The drive tail includes a second sprocket mounting box. Inside the second sprocket mounting box, a driven sprocket is installed through a driven shaft and a bearing. A rear chain support block and a rear chain guide block are respectively provided on the top and bottom of one side of the driven sprocket. The rear chain support block and the rear chain guide block are both fixedly installed inside the second sprocket mounting box. A double-speed chain is meshed between the drive sprocket and the driven sprocket. The top and bottom of one end of the double-speed chain support and guide the movement with the front chain support block and the front chain guide block, respectively. The top and bottom of the other end of the double-speed chain support and guide the movement with the rear chain support block and the rear chain guide block, respectively.

[0007] In a preferred embodiment of this utility model, both the front chain support block and the rear chain support block are strip-shaped blocks, and both the front chain guide block and the rear chain guide block are arc-shaped blocks. Each of the front chain support block, the rear chain support block, the front chain guide block, and the rear chain guide block is provided with a wear-resistant strip mounting groove, and a wear-resistant strip with a matching shape is installed inside the wear-resistant strip mounting groove.

[0008] In a preferred embodiment of this utility model, the middle part of the double-speed chain is located inside the double-speed chain profile, and the top of the double-speed chain profile is provided with a first chain groove for the double-speed chain to be exposed.

[0009] In a preferred embodiment of this utility model, the top and bottom of the first sprocket mounting box are respectively 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 fitted with a second upper cover and a second lower cover by screws.

[0010] In a preferred embodiment of this invention, both the first sprocket mounting box and the second sprocket mounting box have bushings installed inside via transition shafts and bearings, with the bushings positioned opposite the ends of the double-speed chain.

[0011] As a preferred embodiment of the present invention, the surfaces of the first and second top covers are each provided with a second chain groove for exposing the double-speed chain, and the surfaces of the first and second top covers are also provided with a bushing groove for exposing the bushing.

[0012] In a preferred embodiment of this utility model, the driving mechanism includes a driving box fixedly installed inside one of the first sprocket mounting boxes. A geared servo motor is fixedly installed on one side of the driving box. The output shaft of the geared servo motor is inserted inside the driving box and connected to a main drive sprocket. The main drive sprocket is meshed with a driven sprocket through a drive chain. The driven sprocket is sleeved on the outside of the drive shaft.

[0013] In a preferred embodiment of this utility model, the drive shaft near the drive sprocket passes through one of the first sprocket mounting boxes and is connected to the drive sprocket inside it. The other end of the drive shaft passes through another first sprocket mounting box and is connected to the drive sprocket inside it. An aluminum sheath is fitted around the drive shaft, and the two ends of the aluminum sheath are respectively fixed to the drive box and a first sprocket mounting box.

[0014] In a preferred embodiment of this utility model, the tension adjustment mechanism includes strip grooves formed on both sides of the middle part of the second sprocket mounting box. The two strip grooves are respectively fitted onto the two ends of the driven shaft. The bottom of the strip grooves is provided with tension scale markings engraved on the surface of the second sprocket mounting box. The tension adjustment mechanism also includes threaded holes formed at both ends of the driven shaft. Each threaded hole is threaded with an adjusting screw. One end of the adjusting screw passes through the adjusting hole provided in the second sprocket mounting box and is located outside the box.

[0015] As a preferred embodiment of this utility model, both the first sprocket mounting box and the second sprocket mounting box are assembled from multiple sheet metal plates with screws.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model provides an economical, low-load, single-speed chain drive for both the head and tail:

[0018] 1) This utility model is designed for small-load (below 500kg) conveying scenarios using 12BS single-speed chains. It avoids the cost waste caused by the "over-utilization" of existing large-load 12BS drive heads and tails, and fills the market gap for small-load drive heads and tails of 12BS single-speed chains, reducing the user's procurement and usage costs. The front chain support block and front chain guide block set in the first sprocket mounting box of the drive head cooperate with the rear chain support block and rear chain guide block in the second sprocket mounting box of the drive tail. This can effectively support the double-speed chain in the gap between the support profile and the sprocket, preventing the chain from collapsing when the pallet passes by. At the same time, it can guide the chain to avoid it directly hitting the edge corner of the profile and causing abnormal noise. In addition, the front chain support block and the rear chain support block, as well as the front and rear chain guide blocks and the rear chain guide block, are all provided with wear-resistant strip mounting grooves. By daily disassembly and replacement of the wear-resistant strips, the service life of the equipment can be effectively extended.

[0019] 2) This utility model's tension adjustment mechanism, through its set strip groove, adjusting screw, and tension scale markings, allows for convenient and precise adjustment of the driven shaft position, achieving accurate control of the double-speed chain tension and improving the stability of the chain drive. The sprocket mounting boxes for the drive head and drive tail are constructed from multiple sheet metal plates joined together with screws, significantly simplifying the disassembly and assembly process, solving the problem of cumbersome installation of the traditional 12BS drive head and tail, and reducing subsequent maintenance costs. The drive mechanism, through a reduction servo motor in conjunction with the transmission main sprocket and transmission driven sprocket, drives the drive shaft to rotate, enabling the drive... The sprocket-driven chain process is more stable and reliable, and the aluminum sheath sleeve on the outside of the drive shaft can protect the drive shaft. The top and bottom covers of the sprocket mounting box, as well as the bushings installed inside through the transition shaft and bearings, not only protect the internal structure of the sprocket mounting box, but also allow the double-speed chain to transition smoothly, further ensuring the smoothness of the conveying process. As a result, this utility model is not only suitable for small-load conveying scenarios of 12BS single-speed chains, but also has the advantages of economy, convenient installation and maintenance, and conveying stability, effectively solving the problems mentioned in the background technology. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is one of the structural schematic diagrams of this utility model;

[0022] Figure 3 This is a partial disassembly diagram of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the drive head of this utility model;

[0024] Figure 5 This is one of the schematic diagrams of the internal structure of the drive head of this utility model;

[0025] Figure 6 This is a schematic diagram of the drive tail structure of this utility model;

[0026] Figure 7 This is one of the schematic diagrams of the drive tail structure of this utility model.

[0027] In the diagram: 100, crossbeam; 110, double-speed chain profile; 111, first chain groove; 200, drive head; 210, first sprocket mounting box; 211, first upper cover; 212, first lower cover; 220, drive sprocket; 230, front chain support block; 240, front chain guide block; 300, drive tail; 310, second sprocket mounting box; 311, second upper cover; 312, second lower cover; 320, driven shaft; 330, bearing; 340, driven sprocket; 350, rear chain support block; 360, rear chain guide block; 4 00. Drive shaft; 410. Aluminum sheath tube; 500. Drive mechanism; 510. Drive box; 520. Gear servo motor; 521. Main drive sprocket; 530. Drive chain; 540. Drive slave sprocket; 600. Tension adjustment mechanism; 610. Strip groove; 620. Tension scale mark; 630. Threaded hole; 640. Adjusting screw; 650. Adjusting hole; 700. Double speed chain; 800. Wear-resistant strip mounting groove; 900. Transition shaft; 910. Bushing; 1000. Second chain groove; 1100. Bushing groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] 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.

[0030] In the description of this utility model, 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 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] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] like Figures 1-7 As shown, the present invention proposes an economical small-load single-speed chain drive head and tail, including two crossbeams 100, with a double-speed chain profile 110 fixedly installed at both ends of the two crossbeams 100. A drive head 200 and a drive tail 300 are respectively installed at both ends of each double-speed chain profile 110. The two drive heads 200 are connected by a drive shaft 400. A drive mechanism 500 is installed inside one of the drive heads 200, and a tension adjustment mechanism 600 is installed inside both drive tails 300.

[0033] The drive head 200 includes a first sprocket mounting box 210, in which a drive sprocket 220 is installed. A front chain support block 230 and a front chain guide block 240 are respectively located on the top and bottom of one side of the drive sprocket 220. Both the front chain support block 230 and the front chain guide block 240 are fixedly installed inside the first sprocket mounting box 210. The drive tail 300 includes a second sprocket mounting box 310, in which a driven sprocket 340 is installed via a driven shaft 320 and a bearing 330. The driven sprocket 340 has a drive shaft 320 on one side of its top... The bottom and front sprockets are respectively provided with a rear chain support block 350 and a rear chain guide block 360. The rear chain support block 350 and the rear chain guide block 360 are fixedly installed inside the second sprocket mounting box 310. A double speed chain 700 is meshed between the drive sprocket 220 and the driven sprocket 340. The top and bottom of one end of the double speed chain 700 are supported and guided by the front chain support block 230 and the front chain guide block 240, respectively. The top and bottom of the other end of the double speed chain 700 are supported and guided by the rear chain support block 350 and the rear chain guide block 360, respectively.

[0034] Specifically, in an automated conveying scenario, when the drive mechanism 500 inside one of the drive heads 200 is activated, power is transmitted to the drive shaft 400, causing the drive shaft 400 to drive the drive sprocket 220 in the first sprocket mounting box 210 inside the drive head 200 to rotate. The drive sprocket 220 drives the driven sprocket 340 installed in the drive tail 300 to rotate through the meshing double-speed chain 700, thereby making the double-speed chain 700 operate as a whole to realize the conveying of items.

[0035] During the rotation of the double-speed chain 700, the front chain support block 230 inside the drive head 200 can support the double-speed chain 700 in the gap between the support profile and the drive sprocket 220, preventing the chain from collapsing when the pallet passes by. The front chain guide block 240 can guide the direction of chain movement, avoiding the chain from directly hitting the edge of the profile and causing abnormal noise. The rear chain support block 350 and the rear chain guide block 360 inside the drive tail 300 support and guide the other end of the chain. When the chain tension is not good, the tension adjustment mechanism 600 inside the two drive tails 300 can adjust the position of the driven shaft 320 to ensure that the chain is always in a proper tension state, thereby realizing the smooth transport of items on the double-speed chain 700.

[0036] In this embodiment: the front chain support block 230 and the rear chain support block 350 are both strip-shaped blocks, the front chain guide block 240 and the rear chain guide block 360 are both arc-shaped blocks, and the front chain support block 230, the rear chain support block 350, the front chain guide block 240 and the rear chain guide block 360 are all provided with wear-resistant strip mounting grooves 800, and wear-resistant strips with matching shapes are installed inside the wear-resistant strip mounting grooves 800.

[0037] Specifically, when the double-speed chain 700 operates between the drive head 200 and the drive tail 300, the front chain support block 230 in the drive head 200 and the rear chain support block 350 in the drive tail 300, due to their strip-shaped block structure, can form a stable support surface with the chain contact area, effectively supporting the chain and preventing the double-speed chain 700 from collapsing in the gap between the support profile and the sprocket, thus ensuring the smooth passage of pallets and other loads.

[0038] The front chain guide block 240 in the drive head 200 and the rear chain guide block 360 in the drive tail 300 are arc-shaped blocks. The arc-shaped structure can guide the chain to turn more smoothly, reduce the hard contact between the double speed chain 700 and the corner of the profile end, and further reduce the possibility of abnormal noise.

[0039] The wear-resistant strips installed in the wear-resistant strip mounting grooves 800 of the front chain support block 230, rear chain support block 350, front chain guide block 240, and rear chain guide block 360 are of a matching shape. This can effectively reduce the friction loss between the double-speed chain 700 and the support and guide blocks, and at the same time prevent the wear-resistant strips inside the double-speed chain profile 110 from moving outward and falling off, thus extending the overall service life of the equipment and improving the stability and durability of the chain conveyor.

[0040] In this embodiment: the middle part of the double speed chain 700 is located inside the double speed chain profile 110, and the top of the double speed chain profile 110 is provided with a first chain groove 111 for the double speed chain 700 to be exposed.

[0041] Specifically, during the operation of the double-speed chain 700, the middle part of the double-speed chain 700 is located inside the double-speed chain profile 110. The double-speed chain profile 110 provides an internal channel for the double-speed chain 700, restricting the overall direction of the double-speed chain 700 and preventing the chain from deviating. The first chain groove 111 opened at the top of the double-speed chain profile 110 exposes the load-bearing part of the double-speed chain 700, making it convenient for pallets and other loads to be placed on the double-speed chain 700.

[0042] When the drive mechanism 500 drives the chain, the part of the double-speed chain 700 inside the profile moves stably along the profile track, while the part exposed in the first chain groove 111 supports the load and moves synchronously. The double-speed chain profile 110 guides and protects the double-speed chain 700, and the exposed first chain groove 111 provides the load-bearing function, thereby ensuring the smoothness and reliability of the transport process.

[0043] In this embodiment: the top and bottom of the first sprocket mounting box 210 are respectively fitted with a first upper cover 211 and a first lower cover 212 by screws, and the top and bottom of the second sprocket mounting box 310 are respectively fitted with a second upper cover 311 and a second lower cover 312 by screws.

[0044] Specifically, the first upper cover 211 and the first lower cover 212, which are screwed to the top and bottom of the first sprocket mounting box 210, and the second upper cover 311 and the second lower cover 312, which are screwed to the top and bottom of the second sprocket mounting box 310, can effectively enclose internal components such as the drive sprocket 220 and the driven sprocket 340 inside the sprocket mounting box. This effectively prevents external dust and debris from entering the box, avoiding the impact on transmission efficiency and stability of the sprocket and chain due to impurities. When it is necessary to maintain or replace internal components such as the drive sprocket 220, the driven sprocket 340, or the chain support block and guide block, the operator can easily unscrew the screws and open the first upper cover 211 and the first lower cover 212 or the second upper cover 311 and the second lower cover 312 to operate on the internal structure, greatly improving the convenience of equipment maintenance.

[0045] In this embodiment: the first sprocket mounting box 210 and the second sprocket mounting box 310 both have bushings 910 installed inside through a transition shaft 900 and bearings, and the bushings 910 are positioned opposite to the end of the double speed chain 700.

[0046] Specifically, when the double-speed chain 700 operates within the first sprocket mounting box 210 and the second sprocket mounting box 310, the transition shaft 900, in conjunction with the bearing, allows the bushing 910 to rotate flexibly. The friction between the chain and the bushing 910 changes from sliding friction to rolling friction, greatly reducing the wear rate at the chain end and extending the chain's service life. At the same time, the bushing 910 provides a certain guiding and supporting effect on the chain end, allowing the chain to enter or leave the sprocket mounting box more smoothly, ensuring the continuity and stability of the chain drive, and preventing the chain from jamming at the end position.

[0047] In this embodiment: the surfaces of the first upper cover 211 and the second upper cover 311 are both provided with a second chain groove 1000 for the double speed chain 700 to be exposed, and the surfaces of the first upper cover 211 and the second upper cover 311 are also provided with a bushing groove 1100 for the bushing 910 to be exposed.

[0048] Specifically, during the operation of the double-speed chain 700, the second chain groove 1000 opened on the surface of the first upper cover 211 and the second upper cover 311 cooperates with the first chain groove 111 on the top of the double-speed chain profile 110 to form a continuous exposed chain channel, so that the pallet and other loads can smoothly transition from the double-speed chain profile 110 to the upper cover area of ​​the sprocket mounting box without jamming due to discontinuity of the groove, thus ensuring the smooth transport of the loads;

[0049] The bushing grooves 1100 formed on the surfaces of the first upper cover 211 and the second upper cover 311 expose part of the structure of the bushing 910. This does not affect the contact and fit between the bushing 910 and the chain end, but also allows maintenance personnel to more intuitively observe the working status of the bushing 910 during equipment operation or maintenance, making it easier to detect wear or malfunctions of the bushing 910 in a timely manner, thereby ensuring the normal operation of the equipment.

[0050] In this embodiment: the drive mechanism 500 includes a drive box 510 fixedly installed inside one of the first sprocket mounting boxes 210. A reduction servo motor 520 is fixedly installed on one side of the drive box 510. The output shaft of the reduction servo motor 520 is inserted inside the drive box 510 and connected to a transmission main sprocket 521. The transmission main sprocket 521 is meshed with a transmission slave sprocket 540 through a transmission chain 530. The transmission slave sprocket 540 is sleeved on the outside of the drive shaft 400.

[0051] Specifically, when the speed-multiplying chain 700 needs to be driven, the geared servo motor 520 is started by an external controller. The geared servo motor 520 drives the main drive sprocket 521 to rotate. The main drive sprocket 521 drives the driven sprocket 540 to rotate through the drive chain 530. Since the driven sprocket 540 is sleeved outside the drive shaft 400, it can transmit power to the drive shaft 400, causing the drive shaft 400 to start rotating. Through the transmission method of the geared servo motor 520, the main drive sprocket 521, the drive chain 530, and the driven sprocket 540, the power can be smoothly transmitted. Moreover, the geared servo motor 520 can accurately control the output speed to meet the needs of different conveying speeds, making the operation of the drive shaft 400 driving the drive sprocket 220 more stable and controllable, thereby ensuring the stability of the items conveyed by the speed-multiplying chain 700.

[0052] In this embodiment: the drive shaft 400 passes through one of the first sprocket mounting boxes 210 and is connected to the drive sprocket 220 inside it. The other end of the drive shaft 400 passes through another first sprocket mounting box 210 and is connected to the drive sprocket 220 inside it. An aluminum sheath tube 410 is sleeved on the outside of the drive shaft 400. The two ends of the aluminum sheath tube 410 are respectively installed and fixed to the drive box 510 and a first sprocket mounting box 210.

[0053] Specifically, when the drive mechanism 500 drives the drive shaft 400 to rotate, the drive shaft 400 can synchronously drive the drive sprockets 220 in the two drive heads 200 to rotate, ensuring that the speed chain 700 on the two speed chain profiles 110 operates synchronously, avoiding pallet tilting or jamming due to asynchronous chain operation, and improving the stability of item conveying.

[0054] The aluminum sheath 410 sleeved on the outside of the drive shaft 400 can prevent the drive shaft 400 from being directly exposed to the external environment, reduce the corrosion and wear of the drive shaft 400 caused by dust and moisture, and also prevent personnel from accidentally touching the rotating drive shaft 400, thus improving the safety of the equipment.

[0055] In this embodiment: the tension adjustment mechanism 600 includes strip grooves 610 formed on both sides of the middle part of the second sprocket mounting box 310. The two strip grooves 610 are respectively sleeved on both ends of the driven shaft 320. The bottom of the strip grooves 610 is provided with tension scale markings 620 engraved on the surface of the second sprocket mounting box 310. The tension adjustment mechanism 600 also includes threaded holes 630 formed on both ends of the driven shaft 320. Each threaded hole 630 is threaded with an adjusting screw 640. One end of the adjusting screw 640 passes through the adjusting hole 650 provided in the second sprocket mounting box 310 and is located outside the box.

[0056] Specifically, when the double-speed chain 700 becomes loose, affecting the stability of the conveyor, the operator can operate the tension adjustment mechanism 600. The operator rotates the adjusting screw 640, and using the effect of the threaded transmission, the driven shaft 320 can be pushed or pulled along the strip groove 610. The operator observes the movement distance of the driven shaft 320 according to the tension scale mark 620, thereby accurately adjusting the tension of the chain, so that the chain always maintains a suitable tension, ensuring the efficiency and stability of the chain transmission, and avoiding slippage due to the chain being too loose or increased wear due to the chain being too tight.

[0057] In this embodiment, both the first sprocket mounting box 210 and the second sprocket mounting box 310 are assembled from multiple sheet metal plates with screws.

[0058] Specifically, during the equipment manufacturing stage, multiple sheet metal plates can be flexibly processed into different shapes and sizes according to design requirements, and then conveniently spliced ​​and assembled with screws, reducing the processing difficulty and manufacturing cost of the sprocket mounting box;

[0059] During equipment use, if internal components such as the drive sprocket 220, driven sprocket 340, chain support block, or guide block malfunction, operators can easily unscrew the screws, disassemble multiple sheet metal plates, and repair or replace the faulty internal components, greatly improving the convenience of equipment maintenance.

[0060] 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, single-speed chain drive head and tail, comprising two crossbeams (100), characterized in that: Both ends of the two crossbeams (100) are fixedly installed with double speed chain profiles (110). Each double speed chain profile (110) has a drive head (200) and a drive tail (300) installed at both ends. The two drive heads (200) are connected by a drive shaft (400). A drive mechanism (500) is installed inside one of the drive heads (200), and a tension adjustment mechanism (600) is installed inside both drive tails (300). The drive head (200) includes a first sprocket mounting box (210), in which a drive sprocket (220) is installed. A front chain support block (230) and a front chain guide block (240) are respectively provided on the top and bottom of one side of the drive sprocket (220). Both the front chain support block (230) and the front chain guide block (240) are fixedly installed inside the first sprocket mounting box (210). The drive tail (300) includes a second sprocket mounting box (310), in which a driven sprocket (340) is installed inside via a driven shaft (320) and a bearing (330). The top and bottom of one side of the chain are respectively provided with a rear chain support block (350) and a rear chain guide block (360). The rear chain support block (350) and the rear chain guide block (360) are both fixedly installed inside the second sprocket mounting box (310). A double speed chain (700) is meshed between the driving sprocket (220) and the driven sprocket (340). The top and bottom of one end of the double speed chain (700) are supported and guided by the front chain support block (230) and the front chain guide block (240) respectively. The top and bottom of the other end of the double speed chain (700) are supported and guided by the rear chain support block (350) and the rear chain guide block (360) respectively.

2. The economical low-load single-speed chain drive head and tail as described in claim 1, characterized in that: The front chain support block (230) and the rear chain support block (350) are both strip-shaped blocks, and the front chain guide block (240) and the rear chain guide block (360) are both arc-shaped blocks. The front chain support block (230), the rear chain support block (350), the front chain guide block (240) and the rear chain guide block (360) are all provided with wear-resistant strip mounting grooves (800), and wear-resistant strips with matching shapes are installed inside the wear-resistant strip mounting grooves (800).

3. The economical low-load single-speed chain drive head and tail as described in claim 1, characterized in that: The middle part of the double speed chain (700) is located inside the double speed chain profile (110), and the top of the double speed chain profile (110) is provided with a first chain groove (111) for the double speed chain (700) to be exposed.

4. The economical low-load single-speed chain drive head and tail as described in claim 1, characterized in that: The top and bottom of the first sprocket mounting box (210) are respectively fitted with a first upper cover (211) and a first lower cover (212) by screws, and the top and bottom of the second sprocket mounting box (310) are respectively fitted with a second upper cover (311) and a second lower cover (312) by screws.

5. The economical low-load single-speed chain drive head and tail as described in claim 4, characterized in that: The first sprocket mounting box (210) and the second sprocket mounting box (310) both have bushings (910) installed inside through a transition shaft (900) and bearings. The bushings (910) are positioned opposite to the end of the double speed chain (700).

6. The economical low-load single-speed chain drive head and tail as described in claim 5, characterized in that: The surfaces of the first cover (211) and the second cover (311) are provided with a second chain groove (1000) for the double speed chain (700) to be exposed. The surfaces of the first cover (211) and the second cover (311) are also provided with a bushing groove (1100) for the bushing (910) to be exposed.

7. The economical low-load single-speed chain drive head and tail according to claim 1, characterized in that: The drive mechanism (500) includes a drive box (510) fixedly installed inside one of the first sprocket mounting boxes (210). A geared servo motor (520) is fixedly installed on one side of the drive box (510). The output shaft of the geared servo motor (520) is inserted inside the drive box (510) and connected to a transmission master sprocket (521). The transmission master sprocket (521) is meshed with a transmission slave sprocket (540) through a transmission chain (530). The transmission slave sprocket (540) is sleeved on the outside of the drive shaft (400).

8. The economical low-load single-speed chain drive head and tail as described in claim 7, characterized in that: The drive shaft (400) passes through one of the first sprocket mounting boxes (210) and is connected to the drive sprocket (220) inside it. The other end of the drive shaft (400) passes through another first sprocket mounting box (210) and is connected to the drive sprocket (220) inside it. An aluminum sheath tube (410) is sleeved on the outside of the drive shaft (400). The two ends of the aluminum sheath tube (410) are respectively fixed to the drive box (510) and a first sprocket mounting box (210).

9. The economical low-load single-speed chain drive head and tail according to claim 1, characterized in that: The tension adjustment mechanism (600) includes strip grooves (610) on both sides of the middle part of the second sprocket mounting box (310). The two strip grooves (610) are respectively sleeved on both ends of the driven shaft (320). The bottom of the strip grooves (610) is provided with tension scale markings (620) engraved on the surface of the second sprocket mounting box (310). The tension adjustment mechanism (600) also includes threaded holes (630) on both ends of the driven shaft (320). Each threaded hole (630) is threaded with an adjusting screw (640). One end of the adjusting screw (640) passes through the adjusting hole (650) provided in the second sprocket mounting box (310) and is located outside the box.

10. The economical low-load single-speed 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 multiple sheet metal plates joined together with screws.

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