Full-automatic chain type reciprocating layer-changing elevator

Abstract

The utility model discloses a full-automatic chain type reciprocating layer changing elevator, and relates to the technical field of elevators. The full-automatic chain type reciprocating layer-changing elevator frame is used as a main body structure of an elevator; the cargo carrying platform is arranged in the frame and is used for placing cargoes; the lift car conveying mechanism is further arranged at the bottom of the cargo carrying platform and used for taking or placing cargoes on the cargo carrying platform. The lifting mechanism is arranged at the top of the frame, and the lifting mechanism is connected to the top of the cargo carrying platform; a sensing assembly is installed at the height, corresponding to the goods taking position and the goods placing position of the goods carrying platform, of one side of the frame and used for detecting whether the goods carrying platform reaches the corresponding position or not, and the sensing assembly is electrically connected with the lifting mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hoist, concretely relates to a full -automatic chain type reciprocating layer changing hoist. BACKGROUND

[0002] At present, in the existing logistics warehousing system, in order to improve the conveying efficiency, the mode of multilayer conveying line is often used.The layer changing equipment used in the current logistics warehousing system is mostly semi-automatic full -automatic reciprocating layer changing hoist.

[0003] This kind of hoist needs manual operation to realize the layer changing of tray, leads to the slow layer changing efficiency of tray, cannot cooperate with full -automatic warehousing logistics system, and also has the security risk. CONTENT OF UTILITY MODEL

[0004] Therefore, the utility model embodiment provides a full -automatic chain type reciprocating layer changing hoist to solve the above-mentioned technical problems.

[0005] In order to realize the above-mentioned purpose, the utility model embodiment provides the following technical scheme:

[0006] A full -automatic chain type reciprocating layer changing hoist, comprising

[0007] Frame, as the main structure of hoist;

[0008] Cargo platform, the cargo platform is set up in the inside of the frame, is used for placing goods;

[0009] Carriage conveying mechanism, the carriage conveying mechanism is also set up with the bottom of the cargo platform, is used for taking goods or putting goods on the cargo platform;

[0010] Lifting mechanism, the lifting mechanism is set up in the top of frame, and the lifting mechanism is connected to the top of the cargo platform;

[0011] The frame one side and the cargo platform taking goods position and putting goods position corresponding height are installed with inductive component, are used for detecting whether the cargo platform reaches the corresponding position, and the inductive component is electrically connected with the lifting mechanism.

[0012] Optionally, the lifting mechanism comprises a counterweight and six sprockets arranged on the top of the frame, the six sprockets are respectively a first sprocket, a second sprocket, a third sprocket, a fourth sprocket, a fifth sprocket and a sixth sprocket, the counterweight is arranged between one side of the loading platform and the frame, and the counterweight is slidingly connected with the frame, the first sprocket and the second sprocket are arranged at two corners of one side edge of the loading platform away from the counterweight, the third sprocket and the fourth sprocket are arranged at two corners of one side edge of the loading platform close to the counterweight, the fifth sprocket is coaxially arranged with the third sprocket and is arranged in a spaced manner, and the sixth sprocket is coaxially arranged with the fourth sprocket and is arranged in a spaced manner.

[0013] A chain is arranged between the first sprocket and the fifth sprocket, one end of the chain is connected to the corresponding corner of the loading platform and the first sprocket, the chain passes over the top of the first sprocket and then passes over the top of the fifth sprocket, and the other end of the chain is connected to the top of the counterweight.

[0014] A chain is arranged between the second sprocket and the sixth sprocket, one end of the chain is connected to the corresponding corner of the loading platform and the second sprocket, the chain passes over the top of the second sprocket and then passes over the top of the sixth sprocket, and the other end of the chain is connected to the top of the counterweight.

[0015] A chain is arranged on the third sprocket, one end of the chain is connected to the corresponding corner of the loading platform and the third sprocket, the chain passes over the top of the third sprocket, and the other end of the chain is connected to the top of the counterweight.

[0016] A chain is arranged on the fourth sprocket, one end of the chain is connected to the corresponding corner of the loading platform and the fourth sprocket, the chain passes over the top of the fourth sprocket, and the other end of the chain is connected to the top of the counterweight.

[0017] The driving mechanism further comprises a driving mechanism for driving the six sprockets to rotate.

[0018] Optionally, guide rods are arranged on both sides of the inner side wall of the frame, the guide rods are fixedly connected to the frame in the vertical direction, and the counterweight is slidingly connected between the two guide rods.

[0019] Optionally, the driving mechanism comprises a lifting motor and a first transmission shaft, the first transmission shaft is connected between the third sprocket and the fourth sprocket, the third sprocket and the fourth sprocket are coaxially arranged, the output shaft of the lifting motor is arranged in parallel with the first transmission shaft, and the first transmission shaft and the output shaft of the lifting motor are connected through a sprocket and chain transmission.

[0020] Optionally, the car conveying mechanism comprises two conveying tables, the two conveying tables are symmetrically arranged on two sides of the cargo platform, first steering guide rollers are arranged at two ends of the conveying table, two second steering guide rollers are further arranged on the conveying table, a driving sprocket is arranged at the bottom of the conveying table, a chain is arranged around the first steering guide roller, the second steering guide roller and the driving sprocket, the chain is arranged at the top end of the conveying table, and the two ends of the chain pass through the two first steering guide rollers and then pass through the two second steering guide rollers, and the bottom of the driving sprocket is connected to form a closed loop, a conveying motor is arranged at the bottom of the conveying table, the driving sprockets at the bottoms of the two conveying tables are coaxially connected through a second transmission shaft, and the second transmission shaft is connected to the output end of the conveying motor through a sprocket and chain transmission.

[0021] Optionally, the sensing assembly comprises, from top to bottom, an upper limit switch, an upper in-place photoelectric sensor, an upper trigger deceleration photoelectric sensor, a lower trigger deceleration photoelectric sensor, a lower in-place photoelectric sensor and a lower limit switch, which are sequentially arranged on the frame.

[0022] The upper limit switch, the upper in-place photoelectric sensor, the upper trigger deceleration photoelectric sensor, the lower trigger deceleration photoelectric sensor, the lower in-place photoelectric sensor and the lower limit switch are electrically connected with the driving motor.

[0023] Optionally, the counterweight blocks are at least one, and the plurality of counterweight blocks are detachably fixedly connected.

[0024] Optionally, the frame comprises two opposite inner side walls, and the two inner side walls are provided with guide rails, the cargo platform is slidably connected with the guide rails, and a brake mechanism is arranged at the connection position of the cargo platform and the guide rails.

[0025] Optionally, the frame is provided with a buffer mechanism.

[0026] The buffer mechanism comprises an upper buffer seat and a lower buffer seat, the lower buffer seat is fixedly connected between the two guide rails, and the lower buffer seat is fixedly connected with the two guide rails, a plurality of lower buffer springs are arranged at the top of the lower buffer seat, and the lower buffer springs correspond to the positions of the bottom of the cargo platform.

[0027] The upper buffer seat is fixedly connected to the top of the frame, a plurality of lower buffer springs are arranged at the bottom of the upper buffer seat, and the lower buffer springs correspond to the positions of the top of the cargo platform.

[0028] The utility model has at least the following beneficial effects:

[0029] This utility model features a cargo platform and a car conveying mechanism installed within a frame and driven by a drive mechanism. The lifting mechanism drives the cargo platform and car conveying mechanism to move up and down along the frame. The sensing components installed on the frame can sense the position of the cargo platform. When the cargo platform reaches the picking or placing position, the drive mechanism stops operating, and the cargo platform stops at the picking or placing position. The car conveying mechanism then automatically completes the picking or placing operation, thereby reducing manual operation and improving pallet changing efficiency. Attached Figure Description

[0030] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0031] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0032] Figure 1 This is a first-view structural diagram of an embodiment of the present invention;

[0033] Figure 2 for Figure 1 Enlarged structural diagram of section A;

[0034] Figure 3 This is a second-view structural schematic diagram of an embodiment of the present invention;

[0035] Figure 4 This is a third-view (internal structure of the conveyor) structural diagram of one embodiment of the present invention;

[0036] Figure 5 for Figure 4 Enlarged structural diagram of section B.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Frame; 2. Cargo platform; 3. Cargo car conveying mechanism; 31. Conveying platform; 32. First steering guide wheel; 33. Second steering guide wheel; 34. Drive sprocket; 35. Second transmission shaft; 36. Conveyor motor; 4. Lifting mechanism; 41. First sprocket; 42. Second sprocket; 43. Third sprocket; 44. Fourth sprocket; 45. Fifth sprocket; 46. Sixth sprocket; 47. Counterweight; 48. Guide rod; 5. Drive mechanism; 51. Lifting motor; 52. First transmission shaft; 6. Buffer mechanism; 61. Upper buffer seat; 62. Upper buffer spring; 63. Lower buffer seat; 64. Lower buffer spring; 7. Guide rail; 8. Braking mechanism. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0040] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," "fourth," etc. (if present), in the specification, claims, and accompanying drawings of this utility model are intended to distinguish the objects they refer to. For solutions with a sequential flow, this terminology need not be interpreted as describing a specific order or sequence; for solutions with device structures, this terminology does not distinguish between matters of importance or positional relationships.

[0041] Furthermore, the terms “comprising,” “having,” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may also include other steps or units that are not expressly listed but are inherent to these processes, methods, products, or devices, or steps or units added based on further optimizations of the inventive concept.

[0042] like Figures 1-5 As shown, this utility model discloses a fully automatic chain-type reciprocating layer-changing elevator, including a frame 1, which serves as the main structure of the elevator;

[0043] Cargo platform 2, which is disposed inside the frame 1, is used to place goods;

[0044] The car conveying mechanism 3 is also disposed at the bottom of the cargo platform 2 for picking up or placing goods on the cargo platform 2;

[0045] Lifting mechanism 4 is disposed on the top of frame 1 and connected to the top of cargo platform 2;

[0046] A sensing component is installed on one side of the frame 1 at a height corresponding to the loading and unloading positions of the cargo platform 2. This component is used to detect whether the cargo platform 2 has reached the corresponding position. The sensing component is electrically connected to the lifting mechanism 4.

[0047] The aforementioned frame 1 includes four columns forming a square structure. Multiple horizontal bars are spaced from top to bottom between adjacent columns to connect and reinforce them. Inside the column frame 1 is a vertically movable cargo platform 2. A car conveyor mechanism 3 is installed on the cargo platform 2 for picking up and placing goods. A lifting mechanism 4 is installed between the top of the cargo platform 2 and the frame 1, driving the cargo platform 2 to move up and down. A sensing component is installed on the frame 1 to detect whether the cargo platform 2 has reached the picking / placing position. The sensing component is electrically connected to the lifting mechanism 4. When the lifting mechanism 51 is stopped, the lifting motor 51 is controlled to stop, causing the cargo platform 2 to stop at the picking / placing position, and the car conveyor mechanism 3 completes the picking and placing operation.

[0048] In a further embodiment, the lifting mechanism 4 includes a counterweight 47 and six sprockets disposed on the top of the frame 1. The six sprockets are a first sprocket 41, a second sprocket 42, a third sprocket 43, a fourth sprocket 44, a fifth sprocket 45, and a sixth sprocket 46. The counterweight 47 is disposed between one side of the cargo platform 2 and the frame 1, and the counterweight 47 is slidably connected to the frame 1. The first sprocket 41 and the second sprocket 42 are disposed at two corners of one side of the cargo platform 2 away from the counterweight 47. The third sprocket 43 and the fourth sprocket 44 are disposed at two corners of one side of the cargo platform 2 close to the counterweight 47. The fifth sprocket 45 is coaxial with the third sprocket 43 and spaced apart. The sixth sprocket 46 is coaxial with the fourth sprocket 44 and spaced apart.

[0049] A chain is provided between the first sprocket 41 and the fifth sprocket 45. One end of the chain is connected to the corner of the cargo platform 2 corresponding to the first sprocket 41. The chain passes over the top of the first sprocket 41 and then over the top of the fifth sprocket 45. The other end of the chain is connected to the top of the counterweight 47.

[0050] A chain is provided between the second sprocket 42 and the sixth sprocket 46. One end of the chain is connected to the corner of the cargo platform 2 corresponding to the second sprocket 42. The chain passes over the top of the second sprocket 42 and then over the top of the sixth sprocket 46. The other end of the chain is connected to the top of the counterweight 47.

[0051] A chain is provided on the third sprocket 43. One end of the chain is connected to the corner of the cargo platform 2 corresponding to the third sprocket 43. The chain passes over the top of the third sprocket 43, and the other end of the chain is connected to the top of the counterweight 47.

[0052] A chain is provided on the fourth sprocket 44. One end of the chain is connected to the corner of the cargo platform 2 corresponding to the fourth sprocket 44. The chain passes over the top of the fourth sprocket 44, and the other end of the chain is connected to the top of the counterweight 47.

[0053] It also includes a drive mechanism 5, which drives six sprockets to rotate.

[0054] The aforementioned lifting mechanism 4 is configured with four sets of sprocket and chain structures. The first set consists of a first sprocket 41 and a fifth sprocket 45, with the chain meshing at the tops of the first sprocket 41 and the fifth sprocket 45, and extending downwards at both ends to connect to the tops of the cargo platform 2 and the counterweight 47, respectively. The second set consists of a second sprocket 42 and a sixth sprocket 46, with the chain meshing at the tops of the second sprocket 42 and the sixth sprocket 46, and extending downwards at both ends to connect to the tops of the cargo platform 2 and the counterweight 47, respectively. The third set consists of a third sprocket 43, with the chain meshing at the tops of the third sprocket 43, and extending downwards at both ends to connect to the tops of the cargo platform 2 and the counterweight 47, respectively. The fourth set consists of a fourth sprocket 44, with the chain meshing at the tops of the fourth sprocket 44, and extending downwards at both ends to connect to the tops of the cargo platform 2 and the counterweight 47, respectively.

[0055] Four sets of sprockets are located at one corner of the cargo platform 2, and the four corners pull the cargo platform 2 up and down to ensure the stability of the cargo platform 2.

[0056] The aforementioned counterweight 47 is set in the gap between the cargo platform 2 and the frame 1. The cargo platform 2 is set slightly to the left / right of the middle of the frame 1, and the counterweight 47 is set in the gap. Guide rods 48 are set on two opposite sides of the frame 1 adjacent to the cargo platform 2. The guide rods 48 are vertically fixed on the frame 1. The two sides of the counterweight 47 are recessed inward to form a sliding groove. The counterweight 47 and the guide rods 48 cooperate to form a sliding structure, which facilitates up and down sliding.

[0057] In addition, multiple counterweights 47 can be set, and multiple counterweights 47 can be connected together in sequence. For example, by setting a hanging ring at the bottom of the counterweight 47 and a hook at the top of the counterweight 47, the counterweights 47 can be connected. The weight of the counterweight 47 can be selected according to actual needs.

[0058] In a further embodiment, the drive mechanism 5 includes a lifting motor 51 and a first drive shaft 52. The first drive shaft 52 is connected between a third sprocket 43 and a fourth sprocket 44. The third sprocket 43 and the fourth sprocket 44 are coaxially arranged. The output shaft of the lifting motor 51 is parallel to the first drive shaft 52, and the first drive shaft 52 and the output shaft of the lifting motor 51 are connected by a sprocket and chain drive.

[0059] The aforementioned drive mechanism 5 is a lifting motor 51 installed at the top of the frame 1. The first drive shaft 52 is installed between the third sprocket 43 and the fourth sprocket 44, fixing the two sprockets together. At the same time, the fifth sprocket 45 is coaxially fixed with the third sprocket 43, and the fourth sprocket 44 is fixed with the sixth sprocket 46. The third sprocket 43, the fourth sprocket 44, the fifth sprocket 45, and the sixth sprocket 46 are fixed as one unit and rotate synchronously. The fifth sprocket 45 drives the first sprocket 41 to rotate synchronously through the chain, and the sixth sprocket 46 drives the second sprocket 42 to rotate synchronously through the chain, so that the first sprocket 41, the second sprocket 42, the third sprocket 43, and the fourth sprocket 44 can synchronously drive the lifting and lowering of the cargo platform 2.

[0060] The car conveying mechanism 3 includes two conveying platforms 31, which are symmetrically arranged on both sides of the cargo platform 2. Each conveying platform 31 has a first steering guide wheel 32 at both ends and two second steering guide wheels 33. A drive sprocket 34 is provided at the bottom of the conveying platform 31. A chain is wound between the first steering guide wheels 32, the second steering guide wheels 33 and the drive sprocket 34. The chain is located at the top of the conveying platform 31, and both ends of the chain pass over the first steering guide wheels 32 on both sides, then pass between the two second steering guide wheels 33, and are connected at the bottom of the drive sprocket 34 to form a closed loop. A conveying motor 36 is provided at the bottom of the conveying platform 31. The drive sprockets 34 at the bottom of the two conveying platforms 31 are coaxially connected by a second transmission shaft 35. The second transmission shaft 35 is connected to the output end of the conveying motor 36 through a sprocket and chain drive.

[0061] The aforementioned car conveying mechanism 3 has conveyor platforms 31 located on both sides of the bottom of the cargo platform 2. Chains for driving the goods to slide are installed on the two conveyor platforms 31. Specifically, two first guide wheels 32 are installed on both sides of the conveyor platform 31. The chain lies flat on the conveyor platform 31, and a guide chute can be installed on the conveyor platform 31, with the chain extending above the chute. The two ends of the chain pass over the two first guide wheels 32. Two second guide wheels 33 are installed between the two first guide wheels, with the second guide wheels 33 slightly lower than the height of the first guide wheels 32. The two ends of the chain wrap around between the two second guide wheels 33. A drive sprocket 34 is installed slightly below the two second guide wheels 33. The two ends of the chain wrap around the sides of the drive sprocket 34 to the bottom of the drive sprocket 34 and connect to form a closed loop. The rotation of the drive sprocket 34 drives the chain to slide on the conveyor platform 31, transporting goods on the cargo platform 2 for picking up or delivering goods.

[0062] The conveying of the drive sprocket 34 is achieved by setting a second transmission shaft 35 to fix the drive sprocket 34 on the two conveyor tables 31 into a whole. Then, the output shaft of the conveyor motor 36 is connected to the second transmission shaft 35 through a sprocket and chain drive. Thus, the conveyor motor 36 can drive the chains on the two conveyor tables 31 to slide synchronously to transport goods.

[0063] In a further embodiment, the sensing component includes, from top to bottom, an upper limit switch, an upper position photoelectric sensor, an upper trigger deceleration photoelectric sensor, a lower trigger deceleration photoelectric sensor, a lower position photoelectric sensor, and a lower limit switch, which are sequentially installed on the frame 1.

[0064] The upper limit switch, upper position photoelectric sensor, upper trigger deceleration photoelectric sensor, lower trigger deceleration photoelectric sensor, lower position photoelectric sensor, and lower limit switch are all electrically connected to the drive motor.

[0065] Specifically, the upper position photoelectric sensor is used to control the drive motor to shut down when the car conveyor reaches the cargo docking position;

[0066] The lowering position photoelectric sensor is used to control the drive motor to shut down when the car conveyor reaches the cargo docking position;

[0067] Both the upper trigger deceleration photoelectric sensor and the lower trigger deceleration photoelectric sensor are used to control the deceleration of the drive motor.

[0068] The upper limit switch is used to control the drive motor to shut down when the car conveyor exceeds the loading docking position;

[0069] The lower limit switch is used to control the drive motor to shut down when the car conveyor exceeds the cargo docking position.

[0070] In a further embodiment, a buffer mechanism 6 is provided within the frame 1;

[0071] The buffer mechanism 6 includes an upper buffer seat 61 and a lower buffer seat 63. The lower buffer seat 63 is fixedly connected between two guide rails 7 and is also fixedly connected to the guide rails 7 on both sides. A plurality of lower buffer springs 64 are provided on the top of the lower buffer seat 63, and the lower buffer springs 64 correspond to the bottom position of the cargo platform 2.

[0072] The upper buffer seat 61 is fixedly connected to the top of the frame 1. Multiple lower buffer springs 64 are provided at the bottom of the upper buffer seat 61, and the lower buffer springs 64 correspond to the top position of the cargo platform 2.

[0073] By setting a buffer mechanism 6 inside the frame 1, if a stall or malfunction causes the cargo platform 2 to fall or crash, it can provide a certain degree of protection for the cargo platform 2 and the goods on the platform.

[0074] Specifically, a lower buffer seat 63 is fixed at the bottom of the frame 1, and multiple lower buffer springs 64 are installed on the lower buffer seat 63; or an upper buffer seat 61 is installed on the top inner side of the frame 1, and multiple upper impact springs are installed on the upper buffer seat 61. During the process of the frame 1 impacting the top or falling, the deformation of the upper buffer spring 62 and the lower buffer spring 64 plays a buffering role.

[0075] Additionally, guide rails 7 can be provided on two opposing inner sidewalls of the frame 1, the cargo platform 2 is slidably connected to the guide rails 7, and a braking mechanism 8 is provided at the connection between the cargo platform 2 and the guide rails 7. A speed limiter is provided on the top of the frame 1, and the speed limiter is drive-connected to the braking mechanism 8.

[0076] By setting guide rails 7 on both sides of the frame 1, the lifting and lowering of the cargo platform 2 is guided.

[0077] Then, a braking mechanism 8 is installed between the guide rail 7 and the cargo platform 2, and a speed limiter is installed at the top of the frame 1 and a tensioner is installed at the bottom of the frame 1. When the cargo platform 2 loses speed (overshoots or undershoots), the speed limiter controls the tensioner to tighten and drives the braking mechanism 8 to reduce the speed of the cargo platform 2.

[0078] The tensioner and speed limiter are both commercially available products, which will not be described in detail here. The braking mechanism 8 adopts a clamp-type structure, and the tensioner pulls the braking mechanism 8 to brake the cargo platform 2.

[0079] The above specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0080] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0081] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, various modifications and improvements can be made to these specific embodiments, all of which fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A fully automatic chain-type reciprocating layer-changing elevator, characterized in that: include The frame serves as the main structure of the hoist; A cargo platform, which is disposed inside the frame, is used to place goods; A car conveying mechanism is also provided at the bottom of the cargo platform for picking up or placing goods on the cargo platform; A lifting mechanism is provided at the top of the frame and is connected to the top of the cargo platform; A sensing component is installed on one side of the frame at a height corresponding to the cargo pick-up and drop-off positions of the cargo platform. This component is used to detect whether the cargo platform has reached the corresponding position. The sensing component is electrically connected to the lifting mechanism.

2. The fully automatic chain-type reciprocating layer-changing elevator according to claim 1, characterized in that: The lifting mechanism includes a counterweight and six sprockets mounted on the top of the frame. The six sprockets are designated as a first sprocket, a second sprocket, a third sprocket, a fourth sprocket, a fifth sprocket, and a sixth sprocket. The counterweight is mounted between one side of the cargo platform and the frame, and the counterweight is slidably connected to the frame. The first and second sprockets are located at two corners of one side of the cargo platform away from the counterweight, and the third and fourth sprockets are located at two corners of one side of the cargo platform closer to the counterweight. The fifth sprocket is coaxial with the third sprocket and spaced apart from it, and the sixth sprocket is coaxial with the fourth sprocket and spaced apart from it. A chain is provided between the first sprocket and the fifth sprocket. One end of the chain is connected to the corner of the cargo platform corresponding to the first sprocket. The chain passes over the top of the first sprocket and then over the top of the fifth sprocket. The other end of the chain is connected to the top of the counterweight. A chain is provided between the second sprocket and the sixth sprocket. One end of the chain is connected to the corner of the cargo platform corresponding to the second sprocket. The chain passes over the top of the second sprocket and then over the top of the sixth sprocket. The other end of the chain is connected to the top of the counterweight. The third sprocket is equipped with a chain. One end of the chain is connected to the corner of the cargo platform corresponding to the third sprocket. The chain passes over the top of the third sprocket, and the other end of the chain is connected to the top of the counterweight. The fourth sprocket is equipped with a chain. One end of the chain is connected to the corner of the cargo platform corresponding to the fourth sprocket. The chain passes over the top of the fourth sprocket, and the other end of the chain is connected to the top of the counterweight. It also includes a drive mechanism that drives six sprockets to rotate.

3. The fully automatic chain-type reciprocating layer-changing elevator according to claim 2, characterized in that: Guide rods are provided on both sides of the inner wall of the frame. The guide rods are fixedly connected to the frame in the vertical direction, and the counterweight is slidably connected between the two guide rods.

4. The fully automatic chain-type reciprocating layer-changing elevator according to claim 2, characterized in that: The drive mechanism includes a lifting motor and a first drive shaft. The first drive shaft is connected between a third sprocket and a fourth sprocket. The third sprocket and the fourth sprocket are coaxially arranged. The output shaft of the lifting motor is parallel to the first drive shaft, and the first drive shaft and the output shaft of the lifting motor are connected by a sprocket and chain drive.

5. The fully automatic chain-type reciprocating layer-changing elevator according to claim 4, characterized in that: The car conveying mechanism includes two conveyor platforms, which are symmetrically arranged on both sides of the cargo platform. Each conveyor platform has a first steering guide wheel at both ends and two second steering guide wheels. A drive sprocket is located at the bottom of the conveyor platform. A chain is wound between the first and second steering guide wheels and the drive sprocket. The chain is located at the top of the conveyor platform, with both ends passing over the first steering guide wheels on both sides and then passing between the two second steering guide wheels, forming a closed loop at the bottom of the drive sprocket. A conveyor motor is located at the bottom of each conveyor platform. The drive sprockets at the bottom of the two conveyor platforms are coaxially connected via a second transmission shaft. The second transmission shaft is connected to the output end of the conveyor motor via a sprocket and chain drive.

6. The fully automatic chain-type reciprocating layer-changing elevator according to claim 5, characterized in that: The sensing components include, from top to bottom, an upper limit switch, an upper limit photoelectric sensor, an upper trigger deceleration photoelectric sensor, a lower trigger deceleration photoelectric sensor, a lower limit photoelectric sensor, and a lower limit switch, all installed on the frame. The upper limit switch, the upper position photoelectric sensor, the upper trigger deceleration photoelectric sensor, the lower trigger deceleration photoelectric sensor, the lower position photoelectric sensor, and the lower limit switch are all electrically connected to the lifting motor and the conveying motor.

7. The fully automatic chain-type reciprocating layer-changing elevator according to claim 3, characterized in that: At least one counterweight is provided, and the multiple counterweights are detachably and fixedly connected.

8. The fully automatic chain-type reciprocating layer-changing elevator according to claim 1, characterized in that: Guide rails are provided on two opposite inner sidewalls of the frame. The cargo platform is slidably connected to the guide rails, and a braking mechanism is provided at the connection between the cargo platform and the guide rails. A speed limiter is provided on the top of the frame, and the speed limiter is kinetically connected to the braking mechanism.

9. The fully automatic chain-type reciprocating layer-changing elevator according to claim 1, characterized in that: A buffer mechanism is provided within the frame; The buffer mechanism includes an upper buffer seat and a lower buffer seat. The lower buffer seat is fixedly connected between two guide rails and is also fixedly connected to the guide rails on both sides. The top of the lower buffer seat is provided with multiple lower buffer springs, which correspond to the bottom position of the cargo platform. The upper buffer seat is fixedly connected to the top of the frame, and multiple lower buffer springs are provided at the bottom of the upper buffer seat, with the lower buffer springs corresponding to the top position of the cargo platform.

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