Lifting automatic feeding and discharging rack

Abstract

This invention relates to the field of feeding and unloading rack technology, specifically a lifting automatic feeding and unloading rack, comprising a frame assembly, a pulley frame slidably connected within the frame assembly, a lifting mechanism for driving the pulley frame to move within the frame assembly, and a push-pull plate frame slidably connected within the frame assembly. The push-pull plate frame includes a guide groove formed therein, and a limit frame slidably connected within the guide groove. Compared with the prior art, this invention expands the operable space for placing items, so that the two sides of the support plate are not limited or obstructed by the volume of the frame assembly. This facilitates the application of force from both sides of the support plate to push items into the hot press, thereby avoiding the tilting of the item's placement angle caused by unilateral force application. Furthermore, it saves the time and manpower consumed in adjusting the placement angle and position of items within the support plate, thus contributing to the use of lifting automatic feeding and unloading racks.

Description

Technical Field

[0001] This invention relates to the field of feeding and discharging rack technology, specifically to a lifting automatic feeding and discharging rack. Background Technology

[0002] Lifting-type loading and unloading racks typically use chain drive to move the material tray vertically up and down. However, the material tray used to place items is always located inside the loading and unloading rack, and the rack's frame blocks the sides of the tray, limiting the operational space for item placement. This reduces the operational space for item placement, making it difficult to insert large items into the tray due to space constraints. The position and angle at which force can be applied to the item are also limited. The rack's obstruction on both sides makes it difficult to apply force from either side, and applying force from one side can easily cause the item to tilt when pushed into the tray. Adjusting the placement angle and position of the item within the tray is time-consuming and laborious, resulting in the inconvenience of using lifting-type automatic loading and unloading racks. Summary of the Invention

[0003] The purpose of this invention is to provide a lifting automatic feeding and unloading rack to solve the problem mentioned in the background art where, when the items to be placed are large, the step of stuffing them into the material tray is difficult to operate due to limited operating space. This restricts the position and angle at which force can be applied to the items, and the two sides of the items are blocked by the feeding and unloading rack, making it difficult to apply force from both sides. Applying force from one side easily causes the items to tilt when pushed into the material tray, making it time-consuming and laborious to adjust the placement angle and position of the items in the material tray, resulting in inconvenience in using the lifting automatic feeding and unloading rack.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a lifting automatic feeding and discharging rack, comprising a frame assembly, a pulley frame slidably connected within the frame assembly, a lifting mechanism for driving the pulley frame to move within the frame assembly, a push-pull plate frame slidably connected within the frame assembly, the push-pull plate frame including a guide groove formed therein, a limit frame slidably connected within the guide groove, a connecting frame fixedly connected to one side of the limit frame, a plurality of bearing plates fastened within the connecting frame, the bearing plates being slidably connected to the pulley frame, an adjusting motor fixedly connected to the top of the frame assembly, a drive pulley fixedly connected to the drive end of the adjusting motor, a linear slide rail fixedly connected within the frame assembly, a linear slider slidably connected to the linear slide rail, the linear slider being fixedly connected to the push-pull plate frame, a lead screw rotatably connected within the frame assembly, a nut adapted to the lead screw fixedly connected within the push-pull plate frame, the lead screw and the nut being threadedly connected.

[0005] Preferably, the lifting mechanism includes a drive motor, a first drive sprocket, a second drive sprocket, a drive shaft, two driving sprockets, two driven sprockets, two lifting shafts, two lifting chain tensioning assemblies, two second chains, and two connecting heads. The drive motor is fixedly connected to the top of the frame assembly, and its drive end is connected to the first drive sprocket. The two lifting shafts are fixedly connected to the top of the frame assembly, and the drive shaft is rotatably connected to the two lifting shafts. The second drive sprocket is fixedly connected inside the drive shaft. A first chain is wound around the first drive sprocket, and the first drive sprocket is connected to the second drive sprocket via the first chain. The driving sprockets are fixedly connected to both ends of the drive shaft, and the two driven sprockets are rotatably connected to both sides of the bottom of the frame assembly. The driving sprockets are connected to the driven sprockets via a second chain. Lifting chain tensioning assemblies are fixedly connected to both sides of the pulley frame. The lifting chain tensioning assembly includes an internally threaded tube and an externally threaded rod. The internally threaded tube and the externally threaded rod are threadedly connected. The internally threaded tube is fixedly connected to the pulley frame. The connecting head is fixedly connected to one end of the externally threaded rod that extends outside the internally threaded tube. The second chain has two connecting ends. One connecting end is fixedly connected to the connecting head, and the other connecting end is fixedly connected to the lifting chain tensioning assembly.

[0006] Preferably, protective frames are fixedly connected to both sides of the frame assembly, and a transmission groove is provided inside the protective frame. The driving sprocket and the driven sprocket are both disposed inside the transmission groove.

[0007] Preferably, the assembly further includes a transmission chain cover, multiple bolts, multiple first washers, and multiple second washers. The transmission chain cover is fixedly connected to the top of the frame assembly. A protective groove is provided inside the transmission chain cover. Both the first and second transmission sprockets are disposed inside the protective groove and are mounted on the same side. The first and second washers are inserted into the bolts. Multiple threaded connection holes adapted to the bolts are provided inside the transmission chain cover. The bolts are threadedly connected to the threaded connection holes. Multiple threaded blind holes adapted to the bolts are provided on the top of the frame assembly. The bolts are threadedly connected to the threaded blind holes. The transmission chain cover is fixedly connected to the frame assembly by bolts.

[0008] Preferably, a fixing frame is fixedly connected to both sides of the frame assembly, and a plurality of upper and lower position switches are fixedly connected inside the fixing frame. A docking block is fixedly connected to both sides of the pulley frame, and the docking block overlaps with the upper and lower position switches.

[0009] Preferably, a pulley cover is fixedly connected to one side of the frame assembly, and the driving pulley, driven pulley and V-belt are all disposed inside the pulley cover. The two ends of the pulley cover are provided with rounded corners, and the two rounded corners are equidistant.

[0010] Preferably, a material supply switch is fixedly connected inside the pulley frame, the material supply switch overlaps with the support plate, the pulley frame includes two lifting brackets integrally formed therewith, the pulley frame is fixedly connected to the lifting chain tensioning assembly through the lifting brackets, the pulley frame includes two concave plates integrally formed therewith, and the two concave plates are symmetrically arranged on both sides of the pulley frame, two convex rails are fixedly connected inside the frame assembly, the concave plates are slidably connected to the convex rails, multiple layer positioning switches are fixedly connected to one side of the frame assembly, multiple adjustable bases are inserted into the bottom of the frame assembly, a push-pull plate drag chain is fixedly connected to one side of the push-pull plate frame, multiple buffers are fixedly connected to the bottom of the frame assembly, the buffers are arranged below the support plate, a nameplate is fixedly connected to one side of the frame assembly, multiple rivets are inserted into the nameplate, and multiple through holes adapted to the rivets are opened inside the frame assembly.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] This invention, through the activation of the lifting mechanism, lowers the drive pulley frame and the support plate to a position close to the ground. Then, by adjusting the motor, the driving pulley rotates. Utilizing the transmission between the driving and driven pulleys, the lead screw rotates, causing the connected push-pull plate frame to move along the guide direction of the linear slide rail. This moves the sequentially connected push-pull plate frame, limiting frame, and support plate outwards from the frame assembly, exposing most of the support plate's area to the outside of the frame assembly. Compared to existing technologies, this expands the operable space for placing items, freeing the support plate from the volume limitations and obstructions of the frame assembly. This facilitates pushing items into the support plate from both sides, avoiding tilting caused by unilateral force application. Furthermore, it saves time and manpower spent adjusting the angle and position of items within the support plate, thus contributing to the use of lifting automatic feeding and unloading racks. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the drive motor in this invention;

[0015] Figure 3 This is a schematic diagram of the regulating motor in this invention;

[0016] Figure 4 This is a schematic diagram illustrating the positional changes of the carrier disk in this invention;

[0017] Figure 5 This is a schematic diagram of the push-pull plate frame in this invention;

[0018] Figure 6 This is a schematic diagram of the protective frame in this invention;

[0019] Figure 7 This is a schematic diagram of the active sprocket in the present invention;

[0020] Figure 8 This is a schematic diagram of the upper and lower position switches in this invention;

[0021] Figure 9 This is a schematic diagram of the lead screw in this invention.

[0022] In the diagram: 1. Frame assembly; 2. Pulley frame; 3. Adjustable base; 4. Guide roller assembly; 5. Push-pull plate frame; 6. Protective frame; 7. Lifting shaft; 8. Lifting chain tensioning assembly; 9. Driven sprocket; 10. Transmission chain cover; 11. Pulley cover; 12. Lifting bracket; 13. Material present switch; 14. Layer positioning switch; 15. Upper / lower position switch; 16. Control switch; 17. Push-pull plate drag chain; 18. Nameplate; 19. Bearing plate; 20. Drive motor; 21. Bolt; 22. 23. First washer; 24. Second washer; 25. First chain; 26. V-belt; 27. Second chain; 28. Connector; 29. ​​Rivet; 30. Buffer; 31. Adjusting motor; 32. First drive sprocket; 33. Second drive sprocket; 34. Drive shaft; 35. Fixed frame; 36. Connecting block; 37. Drive pulley; 38. Driven pulley; 39. Limiting frame; 40. Lead screw; 41. Linear slide rail; 42. Linear slider; 43. Connecting frame. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-9 One embodiment provided by the present invention:

[0025] The lifting automatic feeding and discharging rack includes a frame assembly 1, a pulley frame 2 slidably connected within the frame assembly 1, a lifting mechanism for driving the movement of the pulley frame 2 within the frame assembly 1, a push-pull plate frame 5 slidably connected within the frame assembly 1, the push-pull plate frame 5 including a guide groove formed therein, a limit frame 39 slidably connected within the guide groove, a connecting frame 43 fixedly connected to one side of the limit frame 39, multiple bearing plates 19 fastened within the connecting frame 43, the bearing plates 19 slidably connected to the pulley frame 2, an adjusting motor 30 fixedly connected to the top of the frame assembly 1, a drive pulley 37 fixedly connected to the drive end of the adjusting motor 30, a linear slide rail 41 fixedly connected within the frame assembly 1, a linear slider 42 slidably connected to the linear slide rail 41, the linear slider 42 fixedly connected to the push-pull plate frame 5, a lead screw 40 rotatably connected within the frame assembly 1, and a nut adapted to the lead screw 40 fixedly connected within the push-pull plate frame 5, the lead screw 40 and the nut being threadedly connected. (Please refer to...) Figure 4 By activating the lifting mechanism, the drive pulley frame 2 and the support plate 19 can be lowered to a position close to the ground. Then, by activating the adjusting motor 30, the drive pulley 37 is rotated. Utilizing the transmission between the drive pulley 37 and the driven pulley 38, the lead screw 40 is rotated, causing the push-pull plate frame 5 connected to it to move along the guide direction of the linear slide rail 41. This causes the push-pull plate frame 5, the limiting frame 39, and the support plate 19, which are connected in sequence, to move outward from the frame assembly 1. This exposes most of the support plate 19 to the outside of the frame assembly 1. Compared with the prior art, this expands the operable space for placing items, freeing the sides of the support plate 19 from the volume limitations and obstructions of the frame assembly 1. This facilitates the application of force from both sides of the support plate 19 to push items into the support plate 19, thus avoiding the situation where the angle of the item placement is tilted due to unilateral force application. It also saves the time and manpower spent adjusting the placement angle and position of items within the support plate 19, which is beneficial for the use of the lifting automatic feeding and unloading rack.

[0026] Please see Figure 1-6In this embodiment, the lifting mechanism includes a drive motor 20, a first drive sprocket 31, a second drive sprocket 32, a drive shaft 33, two driving sprockets 34, two driven sprockets 9, two lifting bearing seats 7, two lifting chain tensioning assemblies 8, two second chains 26, and two connecting heads 27. The drive motor 20 is fixedly connected to the top of the frame assembly 1, and the drive end of the drive motor 20 is connected to the first drive sprocket 31. The two lifting bearing seats 7 are fixedly connected to the top of the frame assembly 1, and the drive shaft 33 is rotatably connected to the two lifting bearing seats 7. Next, the second transmission sprocket 32 ​​is fixedly connected inside the transmission shaft 33. A first chain 24 is wound around the first transmission sprocket 31, and the first transmission sprocket 31 is connected to the second transmission sprocket 32 ​​through the first chain 24. Two driving sprockets 34 are fixedly connected to both ends of the transmission shaft 33, and two driven sprockets 9 are rotatably connected to both sides of the bottom of the frame assembly 1. The driving sprockets 34 are connected to the driven sprockets 9 through the second chain 26. Lifting chain tensioning assemblies 8 are fixedly connected to both sides of the pulley frame 2. The lifting chain tensioning assembly 8 includes an internal thread. The internally threaded tube and the externally threaded rod are connected by a threaded connection. The internally threaded tube is fixedly connected to the pulley frame 2. The connecting head 27 is fixedly connected to one end of the externally threaded rod extending to the outside of the internally threaded tube. The second chain 26 has two connecting ends, one of which is fixedly connected to the connecting head 27, and the other connecting end is fixedly connected to the lifting chain tensioning assembly 8. The first transmission sprocket 31 is rotated by starting the transmission motor 20. The transmission between the first transmission sprocket 31 and the second transmission sprocket 32 ​​causes the transmission shaft 33 to rotate. The rotation will cause the two drive sprockets 34 to rotate simultaneously. Utilizing the transmission between the drive sprockets 34 and the driven sprockets 9, the second chain 26 drives the lifting bearing seat 7, the lifting chain tensioning assembly 8, and the pulley frame 2, which are connected in sequence, to move. At the same time, since the bearing plate 19 is inserted into the pulley frame 2 and is restricted to sliding horizontally, the limit frame 39 will slide in the guide groove after the bearing plate 19 is subjected to a vertical force. This allows the bearing plate 19 to move with the movement of the pulley frame 2, thus enabling the overall vertical movement of the pulley frame 2 to be effectively carried out.

[0027] It should be noted that protective frames 6 are fixedly connected to both sides of the frame assembly 1. A transmission groove is opened in the protective frame 6. The drive sprocket 34 and the driven sprocket 9 are both set inside the transmission groove. The protective frame 6 can be used to hide the drive sprocket 34 and the driven sprocket 9, so as to avoid the contact between the debris and the drive sprocket 34 and the driven sprocket 9 and affect their transmission.

[0028] Please see Figure 1-8In this embodiment, the system also includes a transmission chain cover 10, multiple bolts 21, multiple first washers 22, and multiple second washers 23. The transmission chain cover 10 is fixedly connected to the top of the frame assembly 1. A protective groove is provided inside the transmission chain cover 10. The first transmission sprocket 31 and the second transmission sprocket 32 ​​are both disposed inside the protective groove and are mounted on the same side. The first washers 22 and the second washers 23 are inserted into the bolts 21. Multiple threaded connection holes adapted to the bolts 21 are provided inside the transmission chain cover 10. Bolt 21 is threadedly connected to the threaded connection hole. The top of the frame assembly 1 is provided with multiple threaded blind holes that are compatible with bolt 21. Bolt 21 is threadedly connected to the threaded blind holes. The transmission chain cover 10 is fixedly connected to the frame assembly 1 by bolt 21. The transmission chain cover 10 hides and protects the first transmission sprocket 31 and the second transmission sprocket 32 ​​inside, preventing debris from getting stuck between the first transmission sprocket 31 and the second transmission sprocket 32 ​​and affecting their transmission, thus ensuring that the overall transmission of the first transmission sprocket 31 and the second transmission sprocket 32 ​​is effective in real time.

[0029] It should be noted that fixed brackets 35 are fixedly connected to both sides of the frame assembly 1. Multiple upper and lower position switches 15 are fixedly connected inside the fixed brackets 35. Connecting blocks 36 are fixedly connected to both sides of the pulley frame 2. The connecting blocks 36 engage with the upper and lower position switches 15. When the pulley frame 2 moves, the connecting blocks 36 move with the pulley frame 2 and engage with the push-pull plate frame 5. The upper and lower position switches 15 transmit the motion status information of the pulley frame 2. A pulley cover 11 is fixedly connected to one side of the frame assembly 1. The driving pulley 37, driven pulley 38, and V-belt 25 are all located inside the pulley cover 11. The shell 11 has rounded corners at both ends, with the two rounded corners equidistant. By placing the driving pulley 37, driven pulley 38, and V-belt 25 inside the pulley cover 11, the driving pulley 37, driven pulley 38, and V-belt 25 are protected from contact with debris and prevented from being touched by personnel's hands, thus improving the real-time safety of this technical solution. A material presence switch 13 is fixedly connected inside the pulley frame 2. The material presence switch 13 overlaps with the support plate 19. The material presence switch 13 can detect whether there are items placed on the support plate 19. The pulley frame 2 includes two lifting brackets 12 integrally formed with it. The frame 2 is fixedly connected to the lifting chain tensioning assembly 8 via the lifting bracket 12. The pulley frame 2 includes two concave plates integrally formed therewith, and the two concave plates are symmetrically arranged on both sides of the pulley frame 2. Two convex rails are fixedly connected inside the frame assembly 1. The concave plates are slidably connected to the convex rails. The movement of the pulley frame 2 can be guided by the sliding between the concave plates and the convex rails. Two guide roller assemblies 4 are rotatably connected inside the pulley frame 2. The guide roller assemblies 4 can be used to assist the sliding when the items are pushed into the carrying tray 19. Multiple layer positioning switches 14 are fixedly connected to one side of the frame assembly 1. Multiple adjustable bases 3 are inserted into the bottom of the frame assembly 1. A push-pull plate drag chain 17 is fixedly connected to one side of the frame assembly 5. A nameplate 18 is fixedly connected to one side of the frame assembly 1. Multiple rivets 28 are inserted into the nameplate 18. Multiple through holes that are compatible with the rivets 28 are opened inside the frame assembly 1. Multiple buffers 29 are fixedly connected to the bottom of the frame assembly 1. The buffers 29 are located below the support plate 19. The model of the main equipment inside the frame assembly 1 can be engraved on the surface of the nameplate 18. A control switch 16 is fixedly connected to the push-pull plate frame 5. The control switch 16 is electrically connected to the regulating motor 30. The start and stop of the regulating motor 30 can be controlled by the control switch 16.

[0030] It should be noted that both the carrier plate 19 and the connecting frame 43 have mating interfaces, into which mating rods are inserted. The carrier plate 19 is fastened to the connecting frame 43 through the mating rods. The mating rods are polygonal prisms, and the shape of the mating interfaces matches them. Two sliding blocks are fixedly connected to the bottom of the carrier plate 19. Each sliding block includes a protruding end integrally formed with it. The pulley frame 2 has multiple limiting holes that are adapted to the sliding blocks. Due to the mating between the protruding end and the limiting holes, the freedom of the carrier plate 19 is restricted, so that the carrier plate 19 can only slide on the pulley frame 2. Moreover, the actual number of carrier plates 19 can be adjusted according to usage requirements by pulling the mating rods out of the connecting frame 43 and the carrier plate 19, and by sliding the carrier plate 19 out of the pulley frame 2. This makes it easy to adjust the spacing between multiple carrier plates 19 according to the size of the item.

[0031] Working principle: In the initial state, the pulley frame 2 is located near the top of the frame assembly 1. Starting the drive motor 20 causes the first drive sprocket 31 to rotate. The transmission between the first drive sprocket 31 and the second drive sprocket 32 ​​causes the drive shaft 33 to rotate. The rotation of the drive shaft 33 causes both drive sprockets 34 to rotate simultaneously. The transmission between the drive sprockets 34 and the driven sprocket 9 causes the second chain 26 to move the sequentially connected lifting bearing seat 7, lifting chain tensioning assembly 8, and pulley frame 2, thus driving the pulley frame 2 and the support plate 19 to descend to a position close to the ground. Then, starting the adjustment motor 30 causes the drive pulley 37 to rotate. The transmission between the drive pulley 37 and the driven pulley 38 causes the lead screw 40 to rotate and connect to it. The push-pull plate frame 5 moves along the guide direction of the linear slide rail 41, thereby moving the push-pull plate frame 5, the limiting frame 39 and the carrier plate 19 connected in sequence to the outside of the frame assembly 1. This exposes most of the area of ​​the carrier plate 19 to the outside of the frame assembly 1. Compared with the prior art, this expands the operable space for placing items, so that the two sides of the carrier plate 19 are not limited or obstructed by the volume of the frame assembly 1. At this time, the items are pushed into the carrier plate 19 from both sides and the side away from the frame assembly 1. Then, the drive motor 20 is started again to move the pulley frame 2 and the carrier plate 19 to reset and complete the feeding of the items. When discharging, the operation before pushing the items into the carrier plate 19 is repeated to lower the pulley frame 2 to a position close to the ground, so that the items can be pushed out for discharge.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lift-type automatic in-out feed rack characterized by, The utility model provides a kind of lifting device, including rack assembly (1), pulley frame (2) is slidably connected in the rack assembly (1), lifting mechanism for driving pulley frame (2) movement is equipped in the rack assembly (1), push-pull plate rack (5) is slidably connected in the rack assembly (1), the push-pull plate rack (5) includes the guide slot being opened in its inside, the guide slot slidably connects with limiting frame (39), the limiting frame (39) one side is fixedly connected with connecting frame (43), a plurality of bearing disc (19) is tightly connected in the connecting frame (43), the bearing disc (19) is slidably connected with pulley frame (2), the top of the rack assembly (1) is fixedly connected with adjusting motor (30), the driving end of the adjusting motor (30) is fixedly connected with driving pulley (37), the rack assembly (1) is fixedly connected with linear slide rail (41), linear slide block (42) is slidably connected on the linear slide rail (41), the linear slide block (42) is fixedly connected with push-pull plate rack (5), the rack assembly (1) is rotatably connected with screw rod (40), the push-pull plate rack (5) is fixedly connected with nut matched with screw rod (40), the screw rod (40) is threadedly connected with nut; The lifting mechanism includes transmission motor (20), first transmission sprocket (31), second transmission sprocket (32), transmission shaft (33), two driving sprockets (34), two driven sprockets (9), two lifting chain tensioning assemblies (8), two second chains (26) and two link heads (27), the transmission motor (20) is fixedly connected at the top of the rack assembly (1), the transmission motor (20) is connected with the first transmission sprocket (31), two lifting bearing seats (7) are fixedly connected at the top of the rack assembly (1), the transmission shaft (33) is rotatably connected with two lifting bearing seats (7), the second transmission sprocket (32) is fixedly connected on the transmission shaft (33), the first transmission sprocket (31) is wound with the first chain (24), the first transmission sprocket (31) is drivingly connected with the second transmission sprocket (32) by the first chain (24), two driving sprockets (34) are fixedly connected at two ends of the transmission shaft (33) respectively, two driven sprockets (9) are rotatably connected at two sides of the bottom of the rack assembly (1) respectively, the driving sprocket (34) is drivingly connected with the driven sprocket (9) by the second chain (26), lifting chain tensioning assembly (8) is fixedly connected at two sides of the pulley frame (2), the lifting chain tensioning assembly (8) includes internally threaded tube and externally threaded rod, the internally threaded tube is threadedly connected with the externally threaded rod, the internally threaded tube is fixedly connected with the pulley frame (2), the link head (27) is fixedly connected with the end of the externally threaded rod extending to outside of the internally threaded tube, the second chain (26) has two connection end heads, one of the connection end heads is fixedly connected with the link head (27), and the other connection end head is fixedly connected with the lifting chain tensioning assembly (8).

2. The lift-type automatic access rack according to claim 1, wherein Both sides of the rack assembly (1) are fixedly connected with protective frames (6), the protective frames (6) are provided with transmission grooves, and the driving sprocket (34) and the driven sprocket (9) are arranged in the transmission grooves.

3. The lift-type automatic access rack according to claim 1, wherein Further comprising a transmission chain cover (10), a plurality of bolts (21), a plurality of first washers (22) and a plurality of second washers (23), the transmission chain cover (10) is fixedly connected to the top of the rack assembly (1), the transmission chain cover (10) is provided with a protection groove, the first transmission sprocket (31) and the second transmission sprocket (32) are arranged in the protection groove, the first transmission sprocket (31) and the second transmission sprocket (32) are installed on the same side, the first washer (22) and the second washer (23) are inserted into the bolt (21), the transmission chain cover (10) is provided with a plurality of threaded connection holes matched with the bolt (21), the bolt (21) is screwed with the threaded connection hole, the top of the rack assembly (1) is provided with a plurality of threaded blind holes matched with the bolt (21), the bolt (21) is screwed with the threaded blind hole, and the transmission chain cover (10) is fixedly connected with the rack assembly (1) through the bolt (21).

4. The lift-type automatic access rack according to claim 1, wherein Both sides of the rack assembly (1) are fixedly connected with fixed frames (35), a plurality of up-down switches (15) are fixedly connected in the fixed frames (35), both sides of the pulley frame (2) are fixedly connected with butt blocks (36), and the butt blocks (36) are overlapped with the up-down switches (15).

5. The lift-type automatic access rack according to claim 1, wherein One side of the rack assembly (1) is fixedly connected with a belt pulley cover (11), the driving pulley (37), the driven pulley (38) and the V-belt (25) are arranged in the belt pulley cover (11), both ends of the belt pulley cover (11) are provided with rounded corners, and the two rounded corners are equidistantly arranged.

6. The lift-type automatic access rack according to claim 1, wherein The pulley frame (2) is fixedly connected with a material switch (13), the material switch (13) is overlapped with the bearing disc (19), the pulley frame (2) comprises two lifting supports (12) integrally formed with the pulley frame (2), the pulley frame (2) is fixedly connected with the lifting chain tensioning assembly (8) through the lifting supports (12), the pulley frame (2) comprises two concave plates integrally formed with the pulley frame (2), and the two concave plates are symmetrically arranged on both sides of the pulley frame (2), two convex rails are fixedly connected in the rack assembly (1), the concave plate is in sliding connection with the convex rail, one side of the rack assembly (1) is fixedly connected with a plurality of layer positioning switches (14), the bottom of the rack assembly (1) is inserted with a plurality of adjustable bases (3), and one side of the push-pull plate rack (5) is fixedly connected with a push-pull plate drag chain (17).

7. The lift-type automatic access rack according to claim 1, wherein One side of the rack assembly (1) is fixedly connected with a nameplate (18), a plurality of rivets (28) are inserted into the nameplate (18), a plurality of insertion holes matched with the rivets (28) are formed in the rack assembly (1), a plurality of bumpers (29) are fixedly connected to the bottom of the rack assembly (1), and the bumpers (29) are arranged below the bearing disc (19).

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