A feeding and discharging integrated multiple-speed chain feeder

By employing a layered conveying and pushing mechanism in the double-speed chain conveyor, combined with an industrial inspection camera and electromagnets, integrated loading and unloading is achieved, solving the problems of large footprint, high cost, and positioning deviation in traditional double-speed chain conveyors, thus improving production efficiency and equipment adaptability.

CN224529868UActive Publication Date: 2026-07-21ANHUI LICHENG MACHINERY EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANHUI LICHENG MACHINERY EQUIP
Filing Date
2025-08-27
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Traditional double-speed chain conveyor lines are designed as dual conveyor lines, which occupy a large area, have high equipment costs, are complex to install, have long material turnover paths, are difficult to adapt to complex workshop spaces, and the separation of loading and unloading leads to positioning deviations and production delays.

Method used

The system employs a two-chain conveyor system with upper and lower layers arranged in opposite directions. Combined with lifting and pushing mechanisms, it achieves integrated loading and unloading. An industrial inspection camera is configured to adjust the posture of the material tray, and electromagnets are used to ensure accurate positioning, simplifying the system layout and shortening the material transmission distance.

Benefits of technology

This has resulted in a smaller equipment footprint, adaptability to complex workshop spaces, improved material flow efficiency, reduced positioning deviations, and increased production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a kind of upper and lower material integrated multiple-speed chain material machine, including support frame and the side plate being respectively fixed in the upper two sides of support frame, two chain type conveying mechanisms are equipped between two side plates, two chain type conveying mechanisms are arranged in layers up and down, and the conveying direction of two is opposite;The side of support frame is equipped with lifting mechanism, the side of two chain type conveying mechanisms away from lifting mechanism keeps flush, and lower chain type conveying mechanism is longer than upper chain type conveying mechanism arrangement;The side of upper chain type conveying mechanism close to lifting mechanism is feeding station.The utility model uses the design of two chain type conveying mechanisms arranged in layers up and down and opposite conveying direction, realizes the integration of the integration of feeding and discharging function, replaces traditional double conveying line separation configuration, simplifies the complexity of system layout, reduces the overall land area of equipment, can more flexibly adapt complex workshop space layout, solves the problem of high requirement of traditional double-line design to site space.
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Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, specifically a double-speed chain conveyor that integrates loading and unloading. Background Technology

[0002] The double-speed chain conveyor is an automated conveying equipment with a double-speed chain as its core conveying carrier. It achieves continuous or intermittent conveying through the cooperation of the chain and the material tray. It features adjustable conveying speed, stable operation, and precise positioning. It can adapt to the conveying needs of materials of different specifications and is widely used in assembly, testing, packaging and other production line processes in the manufacturing industries of electronic products and home appliances. It is also easy to integrate with other automated equipment to improve production efficiency.

[0003] Traditional double-speed chain conveyor lines are usually straight and typically equipped with dual conveyor lines, one for loading and the other for unloading. This dual-line conveyor design not only occupies a large area and is difficult to adapt to complex workshop spaces, but the separation of loading and unloading in the dual conveyor lines also increases equipment costs and installation complexity, and may lead to a longer material turnover path, limiting the efficiency of compact connection of multiple processes. Utility Model Content

[0004] The purpose of this invention is to provide a double-speed chain feeder with integrated loading and unloading, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A double-speed chain conveyor with integrated loading and unloading includes a support frame and side plates fixed on both sides above the support frame. Two chain conveying mechanisms are arranged between the two side plates, with the two chain conveying mechanisms arranged in opposite directions. A lifting mechanism is provided on one side of the support frame. The two chain conveying mechanisms are flush with each other on the side away from the lifting mechanism, and the lower chain conveying mechanism is longer than the upper chain conveying mechanism. The side of the upper chain conveying mechanism closest to the lifting mechanism is the loading station. The lifting mechanism is used to send the material tray on the lower chain conveying mechanism to the loading station. A pushing mechanism is provided on one side of the support frame at the position corresponding to the loading station. The pushing mechanism is used to horizontally push the material tray at the loading station onto the upper chain conveying mechanism.

[0007] Furthermore, the chain conveyor mechanism includes a drive motor, a pair of shafts, four sprockets, and a pair of conveyor chains; the shafts are rotatably mounted at corresponding positions between the two side plates, and sprockets are fixedly fitted at both ends of the shafts; the conveyor chains are driven and fitted on the two sprockets on the same side; the drive motor is fixed to one side plate, and its output shaft is fixedly connected to one end of one of the shafts.

[0008] Furthermore, the lifting mechanism includes a telescopic cylinder and a tray; a mounting plate is fixed together on the lower part of both side plates, and the telescopic cylinder is vertically fixed on the mounting plate; the tray is installed on the telescopic end of the telescopic cylinder.

[0009] Furthermore, a camera bracket is fixed on one side plate near the downstream side of the lower chain conveyor mechanism, and an industrial inspection camera for detecting the placement direction of the tray is installed on the camera bracket; a mounting base is fixed on the telescopic end of the telescopic cylinder, and a vertically extending rotating shaft is rotatably installed above the mounting base; the tray is fixed on the top of the rotating shaft; a drive motor is fixed on the mounting base, and the output shaft of the drive motor is connected to the rotating shaft through a gear set.

[0010] Furthermore, the pushing mechanism includes a vertical frame, a power guide rail, and a push plate; the vertical frame is fixed vertically on one side plate, the power guide rail is installed on the top of the vertical frame and extends along the length of the chain conveyor mechanism; the side of the movable seat on the power guide rail is fixed with a push plate, and the push plate is perpendicular to the length of the chain conveyor mechanism.

[0011] Furthermore, several first electromagnets are evenly distributed and embedded on the tray; several second electromagnets are evenly distributed and embedded on the push plate.

[0012] Furthermore, a first baffle is fixed on the downstream side of the lower chain conveyor mechanism on both side plates; a second baffle is fixed on the downstream side of the upper chain conveyor mechanism on both side plates.

[0013] Furthermore, two slide rails are fixed to the inner side of each side plate via connecting arms; two of the slide rails are positioned to match the upper conveyor chain, and the other two slide rails are positioned to match the lower conveyor chain.

[0014] Furthermore, a material platform is fixed on the upstream side of the lower chain conveyor mechanism on both side plates; a positioning plate is fixed on both sides of the material platform; a positioning space is formed between the two positioning plates to achieve the positioning alignment of the slide rail and the slide groove at the bottom of the material tray.

[0015] Furthermore, the drive motor is a right-angle geared motor.

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

[0017] The design adopts a two-chain conveyor mechanism with upper and lower layers arranged in opposite directions, realizing the integrated function of feeding and unloading. It replaces the traditional separate configuration of dual conveyor lines, simplifies the complexity of system layout, reduces the overall footprint of the equipment, and can more flexibly adapt to complex workshop space layouts, solving the problem of high site space requirements of traditional dual-line design.

[0018] By utilizing a closed-loop flow path consisting of a lower chain conveyor for transport, a lifting mechanism for lifting, and a pushing mechanism for pushing to the upper chain conveyor, the material transfer distance during loading and unloading is effectively shortened compared to traditional dual-line separation, thus improving the efficiency of material flow between multiple processes.

[0019] An industrial inspection camera is configured to detect the orientation of the material tray. Combined with a drive motor that drives a rotating shaft through a gear set to adjust the posture of the material tray on the pallet, the positioning space formed by the positioning plate and the guiding effect of the slide rail are used to correct the orientation of the material tray. This avoids the positioning deviation that may occur in traditional manual feeding and reduces production delays caused by positioning errors. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 The diagram shown omits the side panels; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the chain conveyor mechanism in this utility model; Figure 5 This is a schematic diagram of the lifting mechanism in this utility model; Figure 6 This is a schematic diagram of the tray structure installation in this utility model; Figure 7 This is a schematic diagram of the material pushing mechanism in this utility model.

[0021] In the diagram: 01. Loading station; 1. Support frame; 2. Side plate; 21. First baffle; 22. Second baffle; 23. Connecting arm; 24. Slide rail; 3. Chain conveyor mechanism; 31. Shaft; 32. Sprocket; 33. Conveyor chain; 34. Drive motor; 4. Lifting mechanism; 41. Mounting plate; 42. Telescopic cylinder; 43. Pallet; 431. First electromagnet; 44. Mounting seat; 45. Rotating shaft; 46. Drive motor; 47. Gear set; 5. Pushing mechanism; 51. Stand; 52. Power guide rail; 521. Moving seat; 53. Push plate; 531. Second electromagnet; 6. Industrial inspection camera; 61. Camera bracket; 7. Material platform; 71. Positioning plate. Detailed Implementation

[0022] 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.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to 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 the embodiments of this utility model.

[0024] In this embodiment of the invention, 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. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Example 1

[0025] Please see Figures 1-6 This utility model provides a double-speed chain conveyor with integrated loading and unloading, including a support frame 1 and side plates 2 respectively fixed on both sides above the support frame 1. Two chain conveying mechanisms 3 are provided between the two side plates 2. The two chain conveying mechanisms 3 are arranged in layers, and their conveying directions are opposite. A lifting mechanism 4 is provided on one side of the support frame 1. The side of the two chain conveying mechanisms 3 away from the lifting mechanism 4 is kept flush. The lower chain conveying mechanism 3 is longer than the upper chain conveying mechanism 3. The side of the upper chain conveying mechanism 3 near the lifting mechanism 4 is the loading station 01. The lower chain conveying mechanism 3 is used to convey the material tray to the side of the loading station 01, and the upper chain conveying mechanism 3 is used to convey the material tray to the side away from the loading station 01.

[0026] The lifting mechanism 4 is used to send the material tray on the lower chain conveyor 3 to the loading station 01. A pushing mechanism 5 is provided on one side of the support frame 1 at the position corresponding to the loading station 01. The pushing mechanism 5 is used to push the material tray at the loading station 01 horizontally to the upper chain conveyor 3.

[0027] Specifically, the chain conveyor mechanism 3 includes a drive motor 34, a pair of shafts 31, four sprockets 32, and a pair of conveyor chains 33. The conveyor chains 33 are existing technology, and the conveyor chains 33 in the figure are simplified representations. The shafts 31 are rotatably mounted at corresponding positions between the two side plates 2. Both ends of the shafts 31 are fixedly fitted with sprockets 32. The conveyor chains 33 are driven and fitted on the two sprockets 32 on the same side. The drive motor 34 is fixed on one side plate 2, and its output shaft is fixedly connected to one end of one of the shafts 31.

[0028] Among them, the drive motor 34 adopts a right-angle geared motor. Its right-angle structure can ensure the overall structure is compact. In addition, the reduction characteristics can provide suitable speed and sufficient torque to ensure the stable operation of shaft 31, sprocket 32 ​​and conveyor chain 33, meet the requirements of smooth operation and accurate positioning, and the speed is adjustable to adapt to the transmission requirements of different sized trays, improve the adaptability of the equipment to different working conditions, and help to carry out efficient loading and unloading cycles.

[0029] When the drive motor 34 starts, it will drive the shaft 31 to rotate between the two side plates 2. The sprockets 32 fixedly mounted at both ends of the shaft 31 will rotate synchronously with the shaft 31. Since the conveyor chain 33 is driven by the two sprockets 32 on the same side, the rotation of the sprockets 32 will drive the conveyor chain 33 to run, thereby enabling the two chain conveyor mechanisms 3 arranged in the upper and lower layers to perform conveying actions respectively. Since the two conveying directions are opposite, the lower chain conveyor mechanism 3 can convey the material tray to the side of the loading station 01, while the upper chain conveyor mechanism 3 will convey the material tray to the side away from the loading station 01.

[0030] During the above operation, when the lower chain conveyor 3 transports the material tray to a position close to the lifting mechanism 4, the lifting mechanism 4 lifts the material tray on the lower chain conveyor 3 upward and transports it to the loading station 01. It is worth noting that a loading robot (not shown in the figure) is also provided near the loading station 01, which is used to grab the workpiece in the material tray at the loading station 01 and move it to the processing position for processing. At the same time, it can also grab the processed workpiece and transfer it back to the material tray.

[0031] After all the workpieces in the tray at the loading station 01 have been processed and placed, the pushing mechanism 5 starts working and pushes the tray at the loading station 01 horizontally onto the upper chain conveyor mechanism 3. The upper chain conveyor mechanism 3, through the operation of the conveyor chain 33, transports the tray to the side away from the loading station 01, thus completing the loading and unloading of materials. Example 2

[0032] Please see Figure 2 and Figure 5 The difference between this embodiment and Embodiment 1 is that: The lifting mechanism 4 includes a telescopic cylinder 42 and a tray 43. A mounting plate 41 is fixed to the bottom of both side plates 2. The telescopic cylinder 42 is vertically fixed on the mounting plate 41. The telescopic cylinder 42 can be a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder. The tray 43 is installed on the telescopic end of the telescopic cylinder 42. By telescopically extending and retracting the telescopic cylinder 42, the tray 43 can be driven to rise and fall synchronously.

[0033] The telescopic cylinder 42 and the pallet 43 are located between the two conveyor chains 33 of the lower chain conveyor mechanism 3. When the lower chain conveyor mechanism 3 conveys the pallet to the top of the pallet 43, the telescopic cylinder 42 extends and pushes the pallet 43 to contact the bottom of the pallet. As the telescopic cylinder 42 continues to extend, it drives the pallet 43 to lift the pallet, providing a stable drive to push the pallet upward, thus preparing for the subsequent pushing mechanism 5 to push the pallet to the upper chain conveyor mechanism 3.

[0034] like Figure 3 As shown, a camera bracket 61 is fixed on one side plate 2 near the downstream side of the lower chain conveyor mechanism 3. An industrial inspection camera 6 is installed on the camera bracket 61. The industrial inspection camera 6 is used to detect the placement direction of the material tray.

[0035] like Figure 6 As shown, a mounting base 44 is fixed on the telescopic end of the telescopic cylinder 42. A vertically extending rotating shaft 45 is rotatably mounted on the mounting base 44. A tray 43 is fixed on the top of the rotating shaft 45. A drive motor 46 is fixed on the mounting base 44. The output shaft of the drive motor 46 is connected to the rotating shaft 45 through a gear set 47. The gear set 47 includes a main gear fixed on the output shaft of the drive motor 46 and a driven gear fixed on the rotating shaft 45. The two gears mesh to enable the drive motor 46 to drive the rotating shaft 45 to rotate.

[0036] Since the feeding of the material tray on the upstream side of the lower chain conveyor mechanism 3 is usually done manually, there is a possibility that the material tray may be placed in the wrong direction. This application uses an industrial inspection camera 6 to detect the orientation of the material tray. When the incorrect orientation of the material tray is detected, the drive motor 46 on the mounting base 44 is started. Its output shaft is transmitted to the rotating shaft 45 through the gear set 47, so that the vertically extending rotating shaft 45 drives the top tray 43 to rotate, thereby adjusting the orientation of the material tray to the correct state. Example 3

[0037] Please see Figure 2 and Figure 7 The difference between this embodiment and Embodiment 2 is that: The feeding mechanism 5 includes a stand 51, a power guide rail 52, and a push plate 53. The stand 51 is vertically fixed on one of the side plates 2. The power guide rail 52 is installed on the top of the stand 51 and extends along the length of the chain conveyor 3. The side of the movable seat 521 on the power guide rail 52 is fixed with the push plate 53, and the push plate 53 is perpendicular to the length of the chain conveyor 3. After the material tray is lifted to the loading station 01, the power guide rail 52 drives the movable seat 521 to move and drives the push plate 53 to push the material tray horizontally onto the upper conveyor chain 33. Example 4

[0038] Please see Figure 2 and Figure 4 The difference between this embodiment and embodiment 3 is as follows: Two slide rails 24 are fixed to the inner side of each of the two side plates 2 by connecting arms 23. Two of the slide rails 24 are matched with the upper conveyor chain 33, and the other two slide rails 24 are matched with the lower conveyor chain 33. The slide rails 24 are matched with the grooves at the bottom of the tray. The slide rails 24 play a guiding role in the process of the tray being conveyed by the lower chain conveyor mechanism 3, and limit the lateral displacement of the tray.

[0039] Specifically, a first baffle 21 is fixed on the side plates 2 downstream of the lower chain conveyor mechanism 3, a second baffle 22 is fixed on the side plates 2 downstream of the upper chain conveyor mechanism 3, and a material platform 7 is fixed on the side plates 2 upstream of the lower chain conveyor mechanism 3. Positioning plates 71 are fixed on both sides of the material platform 7, and a positioning space is formed between the two positioning plates 71 to achieve the positioning alignment of the slide rail 24 and the slide groove at the bottom of the material tray.

[0040] When the tray is initially placed on the platform 7, the positioning plates 71 on both sides of the platform 7 form a positioning space, which allows the slide groove at the bottom of the tray to be precisely aligned with the slide rail 24, ensuring that the tray can accurately enter the conveying path of the lower chain conveyor 3. When the tray reaches the downstream side of the lower chain conveyor 3, the first baffle 21 blocks and limits it, making it easy for the lifting mechanism 4 to accurately receive and lift it. When the tray is conveyed to the downstream side of the upper chain conveyor 3, the second baffle 22 blocks and limits it.

[0041] Rollers are evenly distributed on the conveyor chain 33 to ensure that even when the material tray is blocked and stops, the rollers can continue to rotate under the material tray and follow the chain, thus avoiding jamming.

[0042] Several first electromagnets 431 are evenly embedded on the tray 43, and several second electromagnets 531 are evenly embedded on the push plate 53. The first electromagnets 431 and the second electromagnets 531 work together to enhance the adsorption or limiting ability of the tray, avoid the tray from shifting or slipping due to mechanical vibration during the pushing process, and ensure that the tray enters the upper chain conveyor mechanism 3 accurately (that is, ensure that the bottom slide groove of the tray can be aligned with the upper slide rail 24).

[0043] It is worth noting that the material tray used in this application is a magnetic metal tray. If a plastic tray is used, a magnetic metal block needs to be embedded in the corresponding position of the tray to ensure that it can be compatible with the magnetic attraction of the first electromagnet 431 and the second electromagnet 531.

[0044] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A double-speed chain conveyor with integrated loading and unloading, comprising a support frame (1) and side plates (2) respectively fixed on both sides above the support frame (1), characterized in that: Two chain conveying mechanisms (3) are provided between the two side plates (2). The two chain conveying mechanisms (3) are arranged in layers above and below, and their conveying directions are opposite. The support frame (1) is provided with a lifting mechanism (4) on one side, and the two chain conveyor mechanisms (3) are kept flush on the side away from the lifting mechanism (4), and the lower chain conveyor mechanism (3) is longer than the upper chain conveyor mechanism (3). The upper chain conveyor (3) is located near the lifting mechanism (4) at the loading station (01). The lifting mechanism (4) is used to send the material tray on the lower chain conveyor mechanism (3) to the loading station (01); On one side of the support frame (1), a pushing mechanism (5) is provided at the position corresponding to the loading station (01). The pushing mechanism (5) is used to push the material tray at the loading station (01) horizontally onto the upper chain conveyor mechanism (3).

2. The double-speed chain conveyor with integrated loading and unloading as described in claim 1, characterized in that: The chain conveyor mechanism (3) includes a drive motor (34), a pair of shafts (31), four sprockets (32) and a pair of conveyor chains (33); The shaft (31) is rotatably mounted at the corresponding position between the two side plates (2), and both ends of the shaft (31) are fixedly fitted with sprockets (32). The conveyor chain (33) is driven by two sprockets (32) on the same side; The drive motor (34) is fixed on one of the side plates (2), and the output shaft is fixedly connected to one end of one of the shafts (31).

3. The double-speed chain conveyor with integrated loading and unloading as described in claim 1, characterized in that: The lifting mechanism (4) includes a telescopic cylinder (42) and a tray (43). A mounting plate (41) is fixed together below the two side plates (2), and the telescopic cylinder (42) is vertically fixed on the mounting plate (41); The tray (43) is mounted on the telescopic end of the telescopic cylinder (42).

4. The double-speed chain conveyor with integrated loading and unloading as described in claim 3, characterized in that: A camera bracket (61) is fixed on one side plate (2) near the downstream side of the lower chain conveyor mechanism (3), and an industrial inspection camera (6) for detecting the placement direction of the tray is installed on the camera bracket (61). The telescopic cylinder (42) has a mounting base (44) fixed on its telescopic end, and a vertically extending rotating shaft (45) is rotatably mounted above the mounting base (44). The tray (43) is fixed to the top of the rotating shaft (45); A drive motor (46) is fixed on the mounting base (44), and the output shaft of the drive motor (46) is connected to the rotating shaft (45) through a gear set (47).

5. A double-speed chain conveyor with integrated loading and unloading as described in claim 3, characterized in that: The pushing mechanism (5) includes a stand (51), a power guide rail (52), and a push plate (53); The upright frame (51) is vertically fixed on one of the side plates (2), and the power guide rail (52) is installed on the top of the upright frame (51) and extends along the length of the chain conveyor mechanism (3). A push plate (53) is fixed to the side of the movable seat (521) on the power guide rail (52), and the push plate (53) is perpendicular to the length direction of the chain conveyor mechanism (3).

6. The double-speed chain conveyor with integrated loading and unloading as described in claim 5, characterized in that: Several first electromagnets (431) are evenly embedded on the tray (43). Several second electromagnets (531) are evenly embedded on the push plate (53).

7. The double-speed chain conveyor with integrated loading and unloading as described in claim 1, characterized in that: A first baffle (21) is fixed on the two side plates (2) on the downstream side of the lower chain conveyor mechanism (3). A second baffle (22) is fixed on the two side plates (2) on the downstream side of the upper chain conveyor mechanism (3).

8. The double-speed chain conveyor with integrated loading and unloading as described in claim 1, characterized in that: The inner sides of both side plates (2) are fixed with two slide rails (24) by connecting arms (23); Two of the slide rails (24) are matched with the upper conveyor chain (33), and the other two slide rails (24) are matched with the lower conveyor chain (33).

9. A double-speed chain conveyor with integrated loading and unloading as described in claim 1, characterized in that: A material platform (7) is fixed on the upstream side of the lower chain conveyor mechanism (3) on both side plates (2); Positioning plates (71) are fixed on both sides of the material platform (7); A positioning space is formed between the two positioning plates (71) to achieve positioning alignment of the slide rail (24) and the groove at the bottom of the tray.

10. A double-speed chain conveyor with integrated loading and unloading as described in claim 2, characterized in that: The drive motor (34) is a right-angle geared motor.